Test

PR #251 added:

```
if defined (__FreeBSD__) || defined (__APPLE__)
...
get_sys_info_by_name
```

that function is available in src/common/sysctl.c.
In the Makefile it builds with sysctl.c but only under FreeBSD:

```
ifeq ($(os), FreeBSD)
```

So it fails under macOS as reported by #375

.github/workflows/lockdown.yml

@@ -0,0 +1,36 @@
+name: 'Disable PR in cpufetch'
+
+on:
+  issues:
+    types: opened
+  pull_request_target:
+    types: opened
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  action:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/repo-lockdown@v2
+        with:
+          github-token: ${{ github.token }}
+          exclude-issue-created-before: ''
+          exclude-issue-labels: ''
+          issue-labels: ''
+          issue-comment: ''
+          skip-closed-issue-comment: false
+          close-issue: false
+          lock-issue: true
+          issue-lock-reason: ''
+          exclude-pr-created-before: ''
+          exclude-pr-labels: ''
+          pr-labels: ''
+          pr-comment: 'cpufetch does not accept pull requests, see [the contributing guidelines](https://github.com/Dr-Noob/cpufetch/blob/master/CONTRIBUTING.md) for details'
+          skip-closed-pr-comment: false
+          close-pr: true
+          lock-pr: false
+          pr-lock-reason: ''
+          process-only: 'prs'

.gitignore

@@ -1 +1,2 @@
 cpufetch
+*.o

CONTRIBUTING.md

@@ -0,0 +1,52 @@
+# cpufetch contributing guidelines
+
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+
+- [1. cpufetch does not accept pull requests](#1-cpufetch-does-not-accept-pull-requests)
+- [2. Creating an issue](#2-creating-an-issue)
+  - [2.1: I found a bug in cpufetch (the program provides incorrect / invalid information)](#21-i-found-a-bug-in-cpufetch-the-program-provides-incorrect--invalid-information)
+  - [2.2: I found a bug in cpufetch (the program crashes / does not work properly)](#22-i-found-a-bug-in-cpufetch-the-program-crashes--does-not-work-properly)
+    - [Stacktrace option 1 (best)](#stacktrace-option-1-best)
+    - [Stacktrace option 2 (use this option if option 1 does not work)](#stacktrace-option-2-use-this-option-if-option-1-does-not-work)
+  - [2.3: I have an idea for a new feature in cpufetch / I want to suggest a change in cpufetch](#23-i-have-an-idea-for-a-new-feature-in-cpufetch--i-want-to-suggest-a-change-in-cpufetch)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+Thanks for your interest in contributing to cpufetch! Please, read this page carefully to understand how to contribute to cpufetch.
+
+## 1. cpufetch does not accept pull requests
+cpufetch is a small project, and I enjoy developing it. There are for sure some bugs and exciting features to add, but I prefer to make these
+changes myself. For that reason, you should always use the issues page to report anything related to cpufetch. In the rare case that there is
+a concise bug or feature that I am unable to implement myself, I will enable pull requests for this.
+
+## 2. Creating an issue
+
+### 2.1: I found a bug in cpufetch (the program provides incorrect / invalid information)
+In the github issue **you must include**:
+- Exact CPU model.
+- Operating system.
+- The output of `cpufetch`.
+- The output of `cpufetch --debug`.
+
+### 2.2: I found a bug in cpufetch (the program crashes / does not work properly)
+- Exact CPU model.
+- Operating system.
+- The output of `cpufetch`.
+- The output of `cpufetch --debug`.
+- A stacktrace (if program crashes):
+
+#### Stacktrace option 1 (best)
+1. Build cpufetch with debug symbols (`make clean; make debug`).
+2. Install valgrind (if it is not already installed)
+3. Run cpufetch with valgrind (`valgrind ./cpufetch`)
+4. Paste the complete output (preferably on a platform like pastebin)
+
+#### Stacktrace option 2 (use this option if option 1 does not work)
+1. Build cpufetch with debug symbols (`make clean; make debug`).
+2. Install gdb (if it is not already installed)
+3. Debug cpufetch with gdb (`gdb cpufetch`)
+3. Run cpufetch (just r inside gdb console)
+4. Paste the complete output (preferably on a platform like pastebin)
+
+### 2.3: I have an idea for a new feature in cpufetch / I want to suggest a change in cpufetch
+Just explain the feature in the issue and include references (links) to relevant sources if appropriate.

LICENSE

@@ -1,21 +1,339 @@
-MIT License
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
 
-Copyright (c) 2018 Dr-Noob
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy
+                            Preamble
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
+  The licenses for most software are designed to take away your
-copies or substantial portions of the Software.
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
 
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  When we speak of free software, we are referring to freedom, not
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+price.  Our General Public Licenses are designed to make sure that you
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+have the freedom to distribute copies of free software (and charge for
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+this service if you wish), that you receive source code or can get it
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+if you want it, that you can change the software or use pieces of it
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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-SOFTWARE.
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+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
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+  2. You may modify your copy or copies of the Program or any portion
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+
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+POSSIBILITY OF SUCH DAMAGES.
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+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
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+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
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+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
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+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
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+
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+
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+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

Makefile

@@ -1,34 +1,143 @@
-CXX=gcc
+CC ?= gcc
 
-CXXFLAGS=-Wall -Wextra -Werror -pedantic -fstack-protector-all -pedantic -std=c99
+CFLAGS+=-Wall -Wextra -pedantic
-SANITY_FLAGS=-Wfloat-equal -Wshadow -Wpointer-arith -Wstrict-overflow=5 -Wformat=2
+SANITY_FLAGS=-Wfloat-equal -Wshadow -Wpointer-arith -Wstrict-prototypes
 
-SRC_DIR=src/
+PREFIX ?= /usr
-SOURCE=$(SRC_DIR)main.c $(SRC_DIR)cpuid.c $(SRC_DIR)apic.c $(SRC_DIR)cpuid_asm.c $(SRC_DIR)printer.c $(SRC_DIR)args.c $(SRC_DIR)global.c
+
-HEADERS=$(SRC_DIR)cpuid.h $(SRC_DIR)apic.h $(SRC_DIR)cpuid_asm.h $(SRC_DIR)printer.h $(SRC_DIR)ascii.h $(SRC_DIR)args.h $(SRC_DIR)global.h
+SRC_COMMON=src/common/
+
+COMMON_SRC = $(SRC_COMMON)main.c $(SRC_COMMON)cpu.c $(SRC_COMMON)udev.c $(SRC_COMMON)printer.c $(SRC_COMMON)args.c $(SRC_COMMON)global.c
+COMMON_HDR = $(SRC_COMMON)ascii.h $(SRC_COMMON)cpu.h $(SRC_COMMON)udev.h $(SRC_COMMON)printer.h $(SRC_COMMON)args.h $(SRC_COMMON)global.h
 
 ifneq ($(OS),Windows_NT)
-	SOURCE += $(SRC_DIR)udev.c
+	GIT_VERSION := "$(shell git describe --abbrev=4 --dirty --always --tags)"
-	HEADERS += $(SRC_DIR)udev.h
+	arch := $(shell uname -m)
+	os := $(shell uname -s)
+
+	ifeq ($(os), Linux)
+		COMMON_SRC += $(SRC_COMMON)freq.c
+		COMMON_HDR += $(SRC_COMMON)freq.h
+	endif
+
+	ifeq ($(arch), $(filter $(arch), x86_64 amd64 i386 i486 i586 i686))
+		SRC_DIR=src/x86/
+		SOURCE += $(COMMON_SRC) $(SRC_DIR)cpuid.c $(SRC_DIR)apic.c $(SRC_DIR)cpuid_asm.c $(SRC_DIR)uarch.c
+		HEADERS += $(COMMON_HDR) $(SRC_DIR)cpuid.h $(SRC_DIR)apic.h $(SRC_DIR)cpuid_asm.h $(SRC_DIR)uarch.h $(SRC_DIR)freq/freq.h
+
+		ifeq ($(os), Linux)
+			SOURCE += $(SRC_DIR)freq/freq.c freq_nov.o freq_avx.o freq_avx512.o
+			HEADERS += $(SRC_DIR)freq/freq.h
+			CFLAGS += -pthread
+		endif
+		ifeq ($(os), $(filter $(os), FreeBSD Darwin))
+			SOURCE += $(SRC_COMMON)sysctl.c
+			HEADERS += $(SRC_COMMON)sysctl.h
+		endif
+		CFLAGS += -DARCH_X86 -std=c99 -fstack-protector-all
+	else ifeq ($(arch), $(filter $(arch), ppc64le ppc64 ppcle ppc))
+		SRC_DIR=src/ppc/
+		SOURCE += $(COMMON_SRC) $(SRC_DIR)ppc.c $(SRC_DIR)uarch.c $(SRC_DIR)udev.c
+		HEADERS += $(COMMON_HDR) $(SRC_DIR)ppc.h $(SRC_DIR)uarch.h  $(SRC_DIR)udev.c
+		CFLAGS += -DARCH_PPC -std=gnu99 -fstack-protector-all -Wno-language-extension-token
+	else ifeq ($(arch), $(filter $(arch), arm aarch64_be aarch64 arm64 armv8b armv8l armv7l armv6l))
+		SRC_DIR=src/arm/
+		SOURCE += $(COMMON_SRC) $(SRC_DIR)midr.c $(SRC_DIR)uarch.c $(SRC_COMMON)soc.c $(SRC_DIR)soc.c $(SRC_COMMON)pci.c $(SRC_DIR)udev.c sve.o
+		HEADERS += $(COMMON_HDR) $(SRC_DIR)midr.h $(SRC_DIR)uarch.h  $(SRC_COMMON)soc.h $(SRC_DIR)soc.h $(SRC_COMMON)pci.h $(SRC_DIR)udev.c $(SRC_DIR)socs.h
+		CFLAGS += -DARCH_ARM -Wno-unused-parameter -std=c99 -fstack-protector-all
+
+		# Check if the compiler supports -march=armv8-a+sve. We will use it (if supported) to compile SVE detection code later
+		is_sve_flag_supported := $(shell $(CC) -march=armv8-a+sve -c $(SRC_DIR)sve.c -o sve_test.o 2> /dev/null && echo 'yes'; rm -f sve_test.o)
+		ifeq ($(is_sve_flag_supported), yes)
+			SVE_FLAGS += -march=armv8-a+sve
+		endif
+
+		ifeq ($(os), Darwin)
+			SOURCE += $(SRC_COMMON)sysctl.c
+			HEADERS += $(SRC_COMMON)sysctl.h
+		endif
+	else ifeq ($(arch), $(filter $(arch), riscv64 riscv32))
+		SRC_DIR=src/riscv/
+		SOURCE += $(COMMON_SRC) $(SRC_DIR)riscv.c $(SRC_DIR)uarch.c $(SRC_COMMON)soc.c $(SRC_DIR)soc.c $(SRC_DIR)udev.c
+		HEADERS += $(COMMON_HDR) $(SRC_DIR)riscv.h $(SRC_DIR)uarch.h $(SRC_COMMON)soc.h $(SRC_DIR)soc.h $(SRC_DIR)udev.h $(SRC_DIR)socs.h
+		CFLAGS += -DARCH_RISCV -Wno-unused-parameter -std=c99 -fstack-protector-all
+	else
+		# Error lines should not be tabulated because Makefile complains about it
+$(warning Unsupported arch detected: $(arch). See https://github.com/Dr-Noob/cpufetch#1-support)
+$(warning If your architecture is supported but the compilation fails, please open an issue in https://github.com/Dr-Noob/cpufetch/issues)
+$(error Aborting compilation)
+	endif
+
 	OUTPUT=cpufetch
 else
+	arch := $(shell cc -dumpmachine)
+	arch := $(firstword $(subst -, ,$(arch)))
+
+	ifeq ($(arch), $(filter $(arch), x86_64 amd64 i386 i486 i586 i686))
+		SRC_DIR=src/x86/
+		SOURCE += $(COMMON_SRC) $(SRC_DIR)cpuid.c $(SRC_DIR)apic.c $(SRC_DIR)cpuid_asm.c $(SRC_DIR)uarch.c
+		HEADERS += $(COMMON_HDR) $(SRC_DIR)cpuid.h $(SRC_DIR)apic.h $(SRC_DIR)cpuid_asm.h $(SRC_DIR)uarch.h
+		CFLAGS += -DARCH_X86 -std=c99
+	else ifeq ($(arch), $(filter $(arch), arm aarch64_be aarch64 arm64 armv8b armv8l armv7l armv6l))
+		SRC_DIR=src/arm/
+		SOURCE += $(COMMON_SRC) $(SRC_DIR)midr.c $(SRC_DIR)uarch.c $(SRC_COMMON)soc.c $(SRC_DIR)soc.c $(SRC_COMMON)pci.c $(SRC_DIR)udev.c sve.o
+		HEADERS += $(COMMON_HDR) $(SRC_DIR)midr.h $(SRC_DIR)uarch.h  $(SRC_COMMON)soc.h $(SRC_DIR)soc.h $(SRC_COMMON)pci.h $(SRC_DIR)udev.c $(SRC_DIR)socs.h
+		CFLAGS += -DARCH_ARM -std=c99
+	else
+		# Error lines should not be tabulated because Makefile complains about it
+$(warning Unsupported arch detected: $(arch). See https://github.com/Dr-Noob/cpufetch#1-support)
+$(warning If your architecture is supported but the compilation fails, please open an issue in https://github.com/Dr-Noob/cpufetch/issues)
+$(error Aborting compilation)
+	endif
+
+	GIT_VERSION := ""
 	SANITY_FLAGS += -Wno-pedantic-ms-format
 	OUTPUT=cpufetch.exe
 endif
 
+all: CFLAGS += -O2
 all: $(OUTPUT)
 
-debug: CXXFLAGS += -g -O0
+debug: CFLAGS += -g -O0
 debug: $(OUTPUT)
 
-release: CXXFLAGS += -static -O3
+static: CFLAGS += -static -O2
-release: $(OUTPUT)
+static: $(OUTPUT)
+
+strict: CFLAGS += -O2 -Werror -fsanitize=undefined -D_FORTIFY_SOURCE=2
+strict: $(OUTPUT)
+
+freq_nov.o: Makefile $(SRC_DIR)freq/freq_nov.c $(SRC_DIR)freq/freq_nov.h $(SRC_DIR)freq/freq.h
+	$(CC) $(CFLAGS) $(SANITY_FLAGS) -c -pthread $(SRC_DIR)freq/freq_nov.c -o $@
+
+freq_avx.o: Makefile $(SRC_DIR)freq/freq_avx.c $(SRC_DIR)freq/freq_avx.h $(SRC_DIR)freq/freq.h
+	$(CC) $(CFLAGS) $(SANITY_FLAGS) -c -mavx -pthread $(SRC_DIR)freq/freq_avx.c -o $@
+
+freq_avx512.o: Makefile $(SRC_DIR)freq/freq_avx512.c $(SRC_DIR)freq/freq_avx512.h $(SRC_DIR)freq/freq.h
+	$(CC) $(CFLAGS) $(SANITY_FLAGS) -c -mavx512f -pthread $(SRC_DIR)freq/freq_avx512.c -o $@
+
+sve.o: Makefile $(SRC_DIR)sve.c $(SRC_DIR)sve.h
+	$(CC) $(CFLAGS) $(SANITY_FLAGS) $(SVE_FLAGS) -c $(SRC_DIR)sve.c -o $@
 
 $(OUTPUT): Makefile $(SOURCE) $(HEADERS)
-	$(CXX) $(CXXFLAGS) $(SANITY_FLAGS) $(SOURCE) -o $(OUTPUT)
+ifeq ($(GIT_VERSION),"")
+	$(CC) $(CFLAGS) $(SANITY_FLAGS) $(SOURCE) -o $(OUTPUT)
+else
+	$(CC) $(CFLAGS) $(SANITY_FLAGS) -DGIT_FULL_VERSION=\"$(GIT_VERSION)\" $(SOURCE) -o $(OUTPUT)
+endif
 
-run:
+run: $(OUTPUT)
 	./$(OUTPUT)
 
 clean:
-	@rm $(OUTPUT)
+	@rm -f $(OUTPUT) *.o
+
+install: $(OUTPUT)
+	install -Dm755 "cpufetch"   "$(DESTDIR)$(PREFIX)/bin/cpufetch"
+	install -Dm644 "LICENSE"    "$(DESTDIR)$(PREFIX)/share/licenses/cpufetch-git/LICENSE"
+	install -Dm644 "cpufetch.1" "$(DESTDIR)$(PREFIX)/share/man/man1/cpufetch.1"
+
+uninstall:
+	rm -f "$(DESTDIR)$(PREFIX)/bin/cpufetch"
+	rm -f "$(DESTDIR)$(PREFIX)/share/licenses/cpufetch-git/LICENSE"
+	rm -f "$(DESTDIR)$(PREFIX)/share/man/man1/cpufetch.1"

README.md

@@ -1,13 +1,87 @@
-# cpufetch
+<p align="center"><img width=50% src="./pictures/cpufetch.png"></p>
 
-Prints a fancy summary of the CPU with some advanced information
+<h4 align="center">Simple yet fancy CPU architecture fetching tool</h4>
 
-### Platforms
+<p align="center"> </p>
-This tool works on both 64 only and under Linux because of its [implementation details](#implementation). AMD support is not guaranteed so information may not be correct
 
-### Usage and installation
+<div align="center">
+  <img height="22px" src="https://img.shields.io/github/v/tag/Dr-Noob/cpufetch?label=cpufetch&style=flat-square">
+  <a href="https://github.com/Dr-Noob/cpufetch/stargazers">
+    <img height="22px" src="https://img.shields.io/github/stars/Dr-Noob/cpufetch?color=4CC61F&style=flat-square">
+  </a>
+  <a href="https://github.com/Dr-Noob/cpufetch/issues">
+    <img height="22px" src="https://img.shields.io/github/issues/Dr-Noob/cpufetch?style=flat-square">
+  </a>
+  <a href="https://github.com/Dr-Noob/cpufetch/blob/master/README.md#1-support">
+    <img height="22px" src="pictures/os-shield.jpg">
+  </a>
+  <a href="https://github.com/Dr-Noob/cpufetch/blob/master/LICENSE">
+    <img height="22px" src="https://img.shields.io/github/license/Dr-Noob/cpufetch?color=orange&style=flat-square">
+  </a>
+</div>
 
-Just clone the repo and use `make` to compile it
+<p align="center"> </p>
+
+<p align="center">
+cpufetch is a command-line tool written in C that displays the CPU information in a clean and beautiful way
+</p>
+
+<p align="center">
+<img width=80% src="./pictures/examples.gif">
+</p>
+
+# Table of contents
+<!-- UPDATE with: doctoc --notitle README.md -->
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+
+
+- [1. Support](#1-support)
+- [2. Installation](#2-installation)
+  - [2.1 Installing from a package](#21-installing-from-a-package)
+  - [2.2 Building from source](#22-building-from-source)
+  - [2.3 Android](#23-android)
+- [3. Examples](#3-examples)
+  - [3.1 x86_64](#31-x86_64)
+  - [3.2 ARM](#32-arm)
+  - [3.3 PowerPC](#33-powerpc)
+  - [3.4 RISC-V](#34-risc-v)
+- [4. Colors](#4-colors)
+  - [4.1 Specifying a name](#41-specifying-a-name)
+  - [4.2 Specifying the colors in RGB format](#42-specifying-the-colors-in-rgb-format)
+- [5. Implementation](#5-implementation)
+- [6. Bugs or improvements](#6-bugs-or-improvements)
+  - [6.1 Unknown microarchitecture error](#61-unknown-microarchitecture-error)
+  - [6.2 Other situations](#62-other-situations)
+- [7. Acknowledgements](#7-acknowledgements)
+- [8. cpufetch for GPUs (gpufetch)](#8-cpufetch-for-gpus-gpufetch)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
+## 1. Support
+
+| OS          | x86_64 / x86       | ARM                | RISC-V             | PowerPC            |
+|:-----------:|:------------------:|:------------------:|:------------------:|:------------------:|
+| GNU / Linux | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
+| Windows     | :heavy_check_mark: | :heavy_check_mark: | :x:                | :x:                |
+| Android     | :heavy_check_mark: | :heavy_check_mark: | :x:                | :x:                |
+| macOS       | :heavy_check_mark: | :heavy_check_mark: | :x:                | :heavy_check_mark: |
+| FreeBSD     | :heavy_check_mark: | :x:                | :x:                | :x:                |
+
+**NOTES:**
+- Colors will be used in Windows only if the terminal supports it.
+- Support in macOS ARM is limited to Apple chips only
+
+## 2. Installation
+### 2.1 Installing from a package
+Choose the right package for your operating system:
+
+[![Packaging status](https://repology.org/badge/vertical-allrepos/cpufetch.svg)](https://repology.org/project/cpufetch/versions)
+
+If there is no available package for your OS, you can download the cpufetch binary from [the releases page](https://github.com/Dr-Noob/cpufetch/releases), or [build cpufetch from source](#22-building-from-source-linuxwindowsmacos) (see below).
+
+### 2.2 Building from source
+You will need a C compiler (e.g, `gcc`) and `make` to compile `cpufetch`. Just clone the repo and run `make`:
 
 ```
 git clone https://github.com/Dr-Noob/cpufetch
@@ -16,38 +90,98 @@ make
 ./cpufetch
 ```
 
-### Example
+### 2.3 Android
+1. Install `termux` app (terminal emulator)
+2. Run `pkg install -y git make clang` inside termux.
+3. Build from source normally:
+  - git clone https://github.com/Dr-Noob/cpufetch
+  - cd cpufetch
+  - make
+  - ./cpufetch
 
-This is the output of `cpufetch` in a i7-4790K
+## 3. Examples
+### 3.1 x86_64
 
-![Example](/preview.png)
+<p align="center"><img width=90% src="pictures/epyc.png"></p>
+<p align="center">AMD EPYC HPC server</p>
+<p align="center"><img width=90% src="pictures/cascade_lake.jpg"></p>
+<p align="center">Intel Xeon HPC server</p>
 
-### Output
+### 3.2 ARM
 
-Output is detailed as follows:
+<p align="center">
+<img width=45% src="pictures/exynos.jpg">
+&nbsp;
+<img width=45% src="pictures/snapd.png">
+</p>
+<p align="center">Samsung Galaxy S8 (left) Xiaomi Redmi Note 7 (right)</p>
 
-| Field      | Description             | Possible Values  |
+### 3.3 PowerPC
-|:----------:|:-----------------------:|:-----------------:|
-| Name       | Name of the CPU   | Any valid CPU name |
-| Frequency  | Max frequency of the CPU(in GHz) | X.XX(GHz or MHz)
-| N.Cores    | Number of cores the CPU has. If CPU supports `Hyperthreading` or similar, this will show cores and threads separately | X(cores)X(threads)
-| AVX        | Type of AVX supported by the CPU or None. AVX instructions allows the CPU to vectorize the code with a witdh of 256 bits in single precision(or 512bits if AVX512 is supported) | AVX,AVX2,AVX512,None
-| SSE        | Same as AVX, but SSE family are 128bits witdh | SSE, SSE2, SSE3, SSSE3, SSE4a, SSE4_1, SSE4_2,None |
-| FMA        | Does this CPU support FMA(Fused Multiply Add)?This instruction allows the CPU to multiply and add a value on the same clock cycle | FMA3,FMA4,None |
-| AES        | Does this CPU support AES? This instruction is allows the CPU to make AES cypher efficiently | Yes or No |
-| SHA        | Does this CPU support SHA? This instruction is allows the CPU to make SHA hashing efficiently | Yes or No |
-| L1 Size    | Size(in bytes) of the L1 cache, separated in data and instructions | XXB(Data)XXB(instructions) |
-| L2 Size    | Size(in bytes) of the L2 cache(both are unified) | XXXKB or None |
-| L3 Size    | Same as L3 | XXXXKB or None |
-| Peak FLOPS | Max FLOPS(Floating Point Operation Per Second) this CPU could theoretical achieve. This is calculated by: `N.Cores*Freq*2(Because 2 functional units)*2(If has FMA)*VectorWidth` | XXX.XX (G/T)FLOPs |
 
-`cpufetch` also prints a simple ascii art of the manufacturer logo.
+<p align="center"><img width=90% src="pictures/ibm.png"></p>
+<p align="center">Talos II</p>
 
-### Implementation
+## 3.4 RISC-V
 
-`cpufetch` makes use of two techniques to fetch data:
+<p align="center"><img width=80% src="pictures/starfive.png"></p>
-* __cpuid__: CPU name, number of threads per core and instructions features are fetched via _cpuid_. See [this](http://www.sandpile.org/x86/cpuid.htm) and [Intel  Processor Identification and the CPUID Instruction](https://www.scss.tcd.ie/~jones/CS4021/processor-identification-cpuid-instruction-note.pdf) for more information.
+<p align="center">StarFive VisionFive 2</p>
-* __udev__: Cache and frequency are fetched via _udev_, by looking at specific files from `/sys/devices/system/cpu`
 
-### Bugs or improvements
+## 4. Colors
-Feel free to open a issue on the repo to report a issue or propose any improvement in the tool
+By default, `cpufetch` will print the CPU logo with the system colorscheme. However, you can set a custom color scheme in two different ways:
+
+### 4.1 Specifying a name
+
+ By specifying a name, cpufetch will use the specific colors of each manufacture. Valid values are:
+
+- intel
+- intel-new
+- amd
+- ibm
+- arm
+
+```
+./cpufetch --color intel (default color for Intel)
+```
+
+### 4.2 Specifying the colors in RGB format
+
+5 colors must be given in RGB with the format: ``[R,G,B:R,G,B:R,G,B:R,G,B:R,G,B]``. These colors correspond to the CPU logo color (first 3 colors) and for the text colors (following 2).
+
+```
+./cpufetch --color 239,90,45:210,200,200:0,0,0:100,200,45:0,200,200
+```
+
+## 5. Implementation
+See [cpufetch programming documentation](https://github.com/Dr-Noob/cpufetch/tree/master/doc).
+
+## 6. Bugs or improvements
+### 6.1 Unknown microarchitecture error
+If you get the `Unknown microarchitecture detected` error when running cpufetch, it might be caused by two possible reasons:
+
+1. You are running an old release of cpufetch (most likely)
+2. Your microarchitecture is not yet supported
+
+Download and compile the latest version (see https://github.com/Dr-Noob/cpufetch#22-building-from-source for instructions)
+and verify if the error persists.
+
+* __If the error dissapears__: It means that this is the first situation. In this case, just use the
+latest version of cpufetch which already has support for your hardware.
+* __If the error does not dissapear__: It means that this is the
+second situation. In this case, please create a new issue with the error message and the output of 'cpufetch --debug' on https://github.com/Dr-Noob/cpufetch/issues
+
+### 6.2 Other situations
+See [cpufetch contributing guidelines](https://github.com/Dr-Noob/cpufetch/blob/master/CONTRIBUTING.md).
+
+## 7. Acknowledgements
+Thanks to the fellow contributors and interested people in the project. Special thanks to:
+- [Gonzalocl](https://github.com/Gonzalocl) and [OdnetninI](https://github.com/OdnetninI): Tested cpufetch in the earlier versions of the project in many different CPUs.
+- [Kyngo](https://github.com/Kyngo): Tested cpufetch in the Apple M1 CPU.
+- [avollmerhaus](https://github.com/avollmerhaus): Helped with PowerPC port giving ssh access to a PowerPC machine.
+- [bbonev](https://github.com/bbonev) and [stephan-cr](https://github.com/stephan-cr): Reviewed the source code.
+- [mdoksa76](https://github.com/mdoksa76) and [exkc](https://github.com/exkc): Excellent ideas and feedback for supporting Allwinner SoCs.
+- [Sakura286](https://github.com/Sakura286), [exkc](https://github.com/exkc) and [Patola](https://github.com/Patola): Helped with RISC-V port with ssh access, ideas, testing, etc.
+- [ThomasKaiser](https://github.com/ThomasKaiser): Very valuable feedback on improving ARM SoC detection (Apple, Allwinner, Rockchip).
+- [zerkerX](https://github.com/zerkerX): Helped with feedback for supporting old (e.g., Pentium III) Intel CPUs.
+
+## 8. cpufetch for GPUs (gpufetch)
+See [gpufetch](https://github.com/Dr-Noob/gpufetch) project!

ascii/amdASCII

@@ -1,21 +0,0 @@
-
-
-
-
-
-
-     @@@@      @@@%      @@@.  @@@@@@@@(      .############
-    @@@@@@     @@@@@   %@@@@.  @@@    @@@@      .((((((####
-   @@@  @@@    @@@/@@@@@@&@@.  @@@     %@@%     #      ####
-  @@@,  (@@#   @@@  @@@/ @@@.  @@@     .@@@   ###      ####
- ,@@@@@@@@@@,  @@@       @@@.  @@@     @@@   ####      ####
- @@@      @@@  @@@       @@@.  @@@@@@@@@&    #######/   .##
-
-
-
-
-
-
-
-
- 

ascii/intelASCII

@@ -1,19 +0,0 @@
-                              ################
-                      #######                #######
-                 ####                              ####
-             ###                                     ####
-        ###                                             ###
-        ###                                  ###        ###
-     #                    ###                ###        ###
-   ##   ###   #########   ######   ######    ###        ###
-  ##    ###   ###    ###  ###    ####  ####  ###        ###
- ##     ###   ###    ###  ###    ###    ###  ###       ###
-##      ###   ###    ###  ###    ##########  ###     ####
-##      ###   ###    ###  ###    ###         ###   #####
-##       ##   ###    ###   #####  #########   ##  ###
-###
-(###
- ####                                        ####
-   #####                               ##########
-     ##########               ################
-         ###############################

cpufetch.1

@@ -0,0 +1,91 @@
+.\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.48.3. It was also manually adapted to look correctly
+.\" help2man -N -n "Simple yet fancy CPU architecture fetching tool" ./cpufetch > cpufetch.1
+.TH CPUFETCH "1" "September 2021" "cpufetch v1.00 (Linux x86_64 build)" "User Commands"
+.SH NAME
+cpufetch \- Simple yet fancy CPU architecture fetching tool
+.SH SYNOPSIS
+.B cpufetch
+[\fI\,OPTION\/\fR]...
+.SH DESCRIPTION
+cpufetch is a command-line tool written in C that displays the CPU information in a clean and beautiful way
+.SH OPTIONS
+.TP
+\fB\-c\fR, \fB\-\-color\fR
+Set the color scheme (by default, cpufetch uses the system color scheme)
+.TP
+\fB\-s\fR, \fB\-\-style\fR
+Set the style of CPU logo
+.TP
+\fB\-d\fR, \fB\-\-debug\fR
+Print CPU model and cpuid levels (debug purposes)
+.TP
+\fB\-\-logo\-short\fR
+Show the short version of the logo
+.TP
+\fB\-\-logo\-long\fR
+Show the long version of the logo
+.TP
+\fB\-v\fR, \fB\-\-verbose\fR
+Print extra information (if available) about how cpufetch tried fetching information
+.TP
+\fB\-\-logo\-intel\-old\fR
+Show the old Intel logo
+.TP
+\fB\-\-logo\-intel\-new\fR
+Show the new Intel logo
+.TP
+\fB\-F\fR, \fB\-\-full\-cpu\-name\fR
+Show the full CPU name (do not abbreviate it)
+.TP
+\fB\-r\fR, \fB\-\-raw\fR
+Print raw cpuid data (debug purposes)
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+Print this help and exit
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+Print cpufetch version and exit
+.SH COLORS
+.TP
+* "intel":
+Use Intel default color scheme
+.TP
+* "amd":
+Use AMD default color scheme
+.TP
+* "ibm",
+Use IBM default color scheme
+.TP
+* "arm":
+Use ARM default color scheme
+.TP
+* custom:
+If the argument of \fB\-\-color\fR does not match any of the previous strings, a custom scheme can be specified. 5 colors must be given in RGB with the format: R,G,B:R,G,B:...The first 3 colors are the CPU art color and the next 2 colors are the text colors
+.SH STYLES
+.TP
+* "fancy":
+Default style
+.TP
+* "retro":
+Old cpufetch style
+.TP
+* "legacy":
+Fallback style for terminals that do not support colors
+.SH LOGOS
+.TP
+cpufetch will try to adapt the logo size and the text to the terminal width. When the output (logo and text) is wider than the terminal width, cpufetch will print a smaller version of the logo (if it exists). This behavior can be overridden by \fB\-\-logo\-short\fR  and \fB\-\-logo\-long\fR, which always sets the logo size as specified by the user, even if it is too big. After the logo selection (either automatically or set by the user), cpufetch will check again if the output fits in the terminal. If not, it will use a shorter name for the fields (the left part of the text). If, after all of this, the output still does not fit, cpufetch will cut the text and will only print the text until there is no space left in each line 
+.SH EXAMPLES
+.TP
+Run cpufetch with Intel color scheme:
+.IP
+\&./cpufetch \fB\-\-color\fR intel
+.TP
+Run cpufetch with a custom color scheme:
+.IP
+\&./cpufetch \fB\-\-color\fR 239,90,45:210,200,200:0,0,0:100,200,45:0,200,200
+.SH BUGS
+.TP
+Report bugs to https://github.com/Dr\-Noob/cpufetch/issues
+.SH NOTE
+.TP
+Peak performance information is NOT accurate. cpufetch computes peak performance using the max frequency of the CPU. However, to compute the peak performance, you need to know the frequency of the CPU running AVX code. This value is not be fetched by cpufetch since it depends on each specific CPU. To correctly measure peak performance, see: https://github.com/Dr\-Noob/peakperf

cpufetch.8

@@ -1,33 +0,0 @@
-.TH man 8 "22 Jun 2018" "0.32" "cpufetch man page"
-.SH NAME
-cpufetch \- Prints a fancy summary of the CPU with some advanced information
-.SH SYNOPSIS
-cpufetch [--help] [--style STYLE]
-.SH DESCRIPTION
-cpufetch will print CPU information, for which will query cpuid instructions and udev directories on Linux. It should display:
-.IP \[bu] 2
-Name
-.IP \[bu]
-Frequency
-.IP \[bu]
-Number of cores(Physical and Logical)
-.IP \[bu]
-AVX,SSE,FMA,AES and SHA support
-.IP \[bu]
-L1,L2 and L3 size
-.IP \[bu]
-Theoretical peak flops
-.SH OPTIONS
-.TP
-\fB\-\-help\fR
-Prints help
-.TP
-\fB\-\-version\fR
-Prints cpufetch version
-.TP
-\fB\-\-style\fR
-Specify the color style of ascii logo
-.SH BUGS
-No known bugs. AMD CPUs may not be fully supported
-.SH AUTHOR
-Dr-Noob (https://github.com/Dr-Noob)

doc/DOCUMENTATION_ARM.md

@@ -0,0 +1,60 @@
+### 2. Why ARM cpufetch works on Linux based systems?
+CPUID instructions (present in x86 architectures) [[1](#references)] allow user level applications to obtain information about the CPU. In ARM architectures, there are many registers (MIDR [[2](#references)], CCSIDR [[3](#references)]) that provide information about the CPU too. However, those registers can only be read from privilege mode (PL1 or higher). Therefore, any user level tool which can actually read information about the running CPU must use the operating system to do so. cpufetch uses some Linux kernel features (see the remaining sections). Therefore, cpufetch in ARM processors is limited to Linux kernel based systems, such as __GNU/Linux__ and __Android__
+
+### 3. How to get CPU microarchitecture?
+__Involved code: [get_midr_from_cpuinfo (udev.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/arm/udev.c), [midr.c](https://github.com/Dr-Noob/cpufetch/blob/master/src/arm/midr.c)__
+
+Microarchitecture information is acquired from the Main ID Register (MIDR) [[2](#references)]. Currently, cpufetch rebuilds this register using `/proc/cpuinfo` file. While this file does not contain the value of the register per se, it contains the following fields:
+- `CPU implementer`,
+- `CPU architecture`
+- `CPU variant`
+- `CPU part`
+- `CPU revision`
+
+The MIDR register can be built with this information. Another possible approach is to read MIDR directly from `/sys/devices/system/cpu/cpu*/regs/identification/midr_el1`
+
+With the MIDR available, the approach is the same as the one used in x86_64 architectures. cpufetch has a file that acts like a database that tries to match the MIDR register with the specific CPU microarchitecture.
+
+### 4. How to get CPU topology?
+__Involved code: [get_ncores_from_cpuinfo (udev.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/arm/udev.c), [midr.c](https://github.com/Dr-Noob/cpufetch/blob/master/src/arm/midr.c)__
+
+ARM provides a new interesting architecture feature: big.LITTLE architectures [[4](#references)]. An ARM CPU can be organized like a typical x86_64 CPU, where all cores share the same microarchitecture. However, ARM big.LITTLE architecture breaks this schema. In a big.LITTLE CPU, two or more CPUs microarchitecture live in the same chip.
+
+This means that cpufetch can't just read which microarchitecture is the first core and assume that the rest of them shares the same microarchitecture. To get the CPU topology, cpufetch first reads the number of CPU cores. This can be obtained from `/sys/devices/system/cpu/present`
+
+Then, for each core, cpufetch reads the MIDR and also the frequency (see section 5). Then, cpufetch assumes that two cores are different when their MIDR are different. This idea allows cpufetch to detect big.LITTLE architectures, and to know how many cores of each architecture the running CPU has.
+
+### 5. How to get the frequency?
+Frequency is read directly from `/sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq`
+
+### 6. How to get system on chip model?
+__Involved code: [soc.c](https://github.com/Dr-Noob/cpufetch/blob/master/src/arm/soc.c)__
+
+System on chip (SoC) model is obtained using the same idea as the microarchitecture. First, SoC string is read. Then, the string has to be matched against a database-like function (__parse_soc_from_string__). The SoC string of the running CPU can be obtained using two different approaches:
+
+- Using `/proc/cpuinfo`. This is the first thing to try. Linux kernel usually provides the string under the `Hardware` keyword. However, the Linux kernel may be unable to provide this information, or this string may not be found in the database-like function.
+- Using Android properties: This only works on Android systems. Android properties can be read using `__system_property_get` function. cpufetch tries to read two properties:
+  - `ro.mediatek.platform`
+  - `ro.product.board`
+
+  If any string is returned, cpufetch tries to find a match in the database (using the same database as in the case of `/proc/cpuinfo`).
+
+The expected strings have to be hardcoded. I found two ways of knowing which string should correspond to which SoC:
+
+  - Searching on the internet. Manufacturers __usually__ provide this information. For example, Qualcomm usually publishes the chip name along with other characteristics (under the `Part` or `Part number` keyword [[6](#references)]).
+  - "Hunting" for the strings. For example, finding smartphones with a given SoC and manually reading the `/proc/cpuinfo` or the `build.prop` file. A very good resource to do this is the SpecDevice webpage [[7](#references)]).
+
+### 7. How to get cache size and topology?
+ARM architecture supports reading the cache information via some registers (for example, the CCSIDR register  [[3](#references)]). As mentioned earlier, user level applications are not able to read these registers directly. The remaining option is to ask the operating system for this information. However, at the moment, the __Linux kernel does not provide cache information__. Therefore, cpufetch does not print any cache information on ARM CPUs at the moment. There are, however, other approaches to be explored:
+
+- Read the registers in kernel mode. This can be accomplished by running a kernel module [[4](#references)]. Unfortunately, running a custom kernel module is tricky, and sometimes impossible to do reasonably (for example, in Android devices). In any case, my decision is to run cpufetch on user level only.
+- Hardcode the cache information for each SoC: Sometimes, manufacturers publish technical information about the chips, where cache topology and size are shown. This method is impractical, since this kind of information is very hard (or impossible) to find online, and the number of SoC is huge.
+
+#### References
+- [1] [cpufetch x86_64 documentation](https://github.com/Dr-Noob/cpufetch/blob/master/doc/DOCUMENTATION_X86.md)
+- [2] [Main ID Register](https://developer.arm.com/documentation/ddi0433/c/system-control/register-descriptions/main-id-register)
+- [3] [Cache size ID Register](https://developer.arm.com/documentation/100403/0200/register-descriptions/aarch32-system-registers/ccsidr--cache-size-id-register)
+- [4] [How to get the size of the CPU cache in Linux](https://stackoverflow.com/a/63474811/9975463)
+- [5] [ARM big.LITTLE](https://en.wikipedia.org/wiki/ARM_big.LITTLE)
+- [6] [Snapdragon 855+ Mobile Platform](https://www.qualcomm.com/products/snapdragon-855-plus-mobile-platform)
+- [7] [SpecDevice](http://specdevice.com/unmoderated.php)

doc/DOCUMENTATION_PPC.md

@@ -0,0 +1,26 @@
+### 2. How to get CPU microarchitecture?
+__Involved code: [get_uarch_from_pvr (uarch.c)](https://github.com/Dr-Noob/cpufetch/src/ppc/uarch.c)__
+
+Microarchitecture is deduced from the PVR register, which is read using the `mfpvr` instruction. The correspondence between the PVR and the specific microarchitecture has been implemented using the values in `arch/powerpc/kernel/cputable.c` in the Linux kernel. Some of them have been removed. The manufacturing process has been queried by searching on the internet.
+
+### 3. How to get CPU topology?
+__Involved code: [get_topology_info (ppc.c)](https://github.com/Dr-Noob/cpufetch/src/ppc/ppc.c)__
+
+The total number of cores is queried using `sysconf(_SC_NPROCESSORS_ONLN)`. Then, with the number of sockets and the number of physical cores, we can calculate the number of threads per core.
+
+The number of sockets is queried using `/sys/devices/system/cpu/cpu*/topology/physical_package_id`. Once this file has been read for all of the cores, a simple custom algorithm is used to determine the number of sockets.
+
+The number of physical cores is queried using `/sys/devices/system/cpu/cpu*/topology/core_id`. Again, a custom algorithm is used to determine the number of physical cores.
+
+### 4. How to get the frequency?
+Frequency is read directly from `/sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq`
+
+### 5. How to get cache size and topology?
+Cache size is retrieved directly from Linux (using `/sys/devices/system/cpu/cpu0/cache/index*/size`).
+
+To find the cache topology, the files `/sys/devices/system/cpu/cpu0/cache/index*/shared_cpu_map` are used, and a custom algorithm is used to determine how many caches are there at each level.
+
+_NOTE_: To avoid Linux dependencies at this point, it looks like it is possible to derive the cache size and topology from the microarchitecture. For example, in the POWER9 architecture, wikichip assumes that all the POWER9 CPUs have the same cache size for each core and topology [[1](#references)].
+
+#### References
+- [1] [POWER9 - wikichip](https://en.wikichip.org/wiki/ibm/microarchitectures/power9)

doc/DOCUMENTATION_X86.md

@@ -0,0 +1,120 @@
+### 2. Why differences between Intel and AMD?
+There are many different CPUID leaves [[1](#references)]. In some cases, a given leaf does the same thing in Intel and AMD processors, but in the majority of them, they don't. For example, leaf 0x4 gives you the caches information, but in AMD is a reserved (invalid) leaf! In the case of AMD, is more common to fetch information using extended levels than using the standard levels (the other way around with Intel).
+
+### 3. How to get the frequency?
+__Involved code: [get_frequency_info (cpuid.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/cpuid.c)__
+
+CPUID leaf 0x16 is used.
+
+If the CPU does not support supports such level:
+- Linux: cpufetch will try to obtain this information using `/sys` filesystem in Linux. I think that Linux knows the frequency using model specific registers (MSRs), which you can't read at the user level.
+- Windows: cpufetch can't obtain CPU frequency. This means that peak performance can't be computed because the frequency is needed to compute it.
+
+### 4. How to get cache sizes?
+__Involved code: [get_cache_info (cpuid.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/cpuid.c)__
+
+- Intel: CPUID leaf 0x4 is used (using __get_cache_info_general__). If the CPU does not support it, cpufetch can't get this information.
+- AMD: Extended CPUID leaf 0x1D is used (using __get_cache_info_general__). If the CPU does not support this level, cpufetch uses a fallback method, which uses extended leaves 0x5 and 0x6. This fallback method uses __get_cache_info_amd_fallback__.
+
+
+### 5. How to get CPU microarchitecture?
+__Involved code: [get_cpu_uarch (cpuid.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/cpuid.c), [get_uarch_from_cpuid (uarch.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/uarch.c)__
+
+CPUID leaf 0x1 is used. From there, we get:
+- Model
+- Extended Model
+- Family
+- Extended Family
+- Stepping
+
+Knowing this information, we can distinguish any CPU microarchitecture. Inside __uarch.c__ there is a function that behaves like a database or a lookup table. The function of this database is to find a match between the information obtained from 0x1 and what kind of microarchitecture the current CPU is. I got the data using and adapting the code from Todd Allen's cpuid program [[5](#references)]. Knowing the microarchitecture, we can obtain the manufacturing process (or technology, the size in nm of the transistors).
+
+### 6. How to get CPU topology?
+__Involved code: [cpuid.h](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/cpuid.h), [get_topology_info (cpuid.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/cpuid.c), [apic.c](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/apic.c)__
+
+cpufetch aims to support the most complex systems, so it supports multi-socket CPUs and detailed SMT (Intel HyperThreading) information. The CPU topology is stored in the following struct:
+
+```
+struct topology {
+  int64_t total_cores;
+  uint32_t physical_cores;
+  uint32_t logical_cores;
+  uint32_t smt_available;
+  uint32_t smt_supported;
+  uint32_t sockets;
+};
+```
+
+This structure needs a bit of explanation, to know what are we looking for:
+- `physical_cores`: Number of physical cores. In a multi socket system, this field stores the number of cores for just one socket.
+- `logical_cores`: Number of logical cores. In a multi socket system, this field stores the number of logical cores for just one socket.
+- `total_cores`: Total number of logical cores. In a multi socket system, this field stores the number of logical cores for the entire system.
+- `sockets`: How many sockets the system has.
+- `smt_supported`: Stores if SMT (or Intel HT) is supported in the CPU, storing the number of threads per core. So, if `smt_supported == 1`, it means that there is 1 thread per core, and SMT is not supported. If SMT is supported, then `smt_supported >= 1`. Note this field tells if the CPU if supports it, but not if SMT is activated or not.
+- `smt_available`: The same idea as `smt_supported`, but it stores if SMT is available. If SMT is not supported, then `smt_available` is always `1`. The differentiation between supported and available lets cpufetch distinguish when a CPU has SMT capabilities, but are disabled (probably in the BIOS).
+
+Let's give two CPU examples and the values that `struct topology` would have in these CPUs.
+- Example 1: Dual Socket Intel Xeon 6248:
+
+```
+total_cores = 80
+physical_cores = 20
+logical_cores = 40
+smt_available = 2
+smt_supported = 2
+sockets = 2
+```
+
+- Example 2: Intel Core i7-4790K with SMT disabled in BIOS:
+
+```
+total_cores = 8
+physical_cores = 4
+logical_cores = 8
+smt_available = 1
+smt_supported = 2
+sockets = 1
+```
+
+Now that we know what data are we looking for, let's see how we get it:
+
+- __Intel__: The methodology used is explained in the Intel webpage [[2](#references)]. Intel explains how to do it and also gives an example source code. I used it and modified it to fit cpufetch style. The core of this methodology is the usage of the APIC id, so the code is inside __apic.c__.
+- __AMD__: Intel's algorithm using APIC does not work for AMD. To get the same information in AMD, I used the reference from OSdev [[3](#references)] and also ideas from lscpu [[4](#references)]. This uses:
+  - CPUID extended leaf 0x8: Fill `logical_cores`
+  - CPUID extended leaf 0x1E: Fill `smt_supported`
+  - CPUID standard leaf 0x1 (APIC): Fill `smt_available`
+
+  If any of these levels are not supported, these fields are just guessed. For example, if we are not able to know if SMT is supported, we guess it is not. With all of these data, we can calculate the rest of the fields:
+
+  ```
+  physical_cores = logical_cores / smt_available;  
+  if(topo->smt_supported > 1)
+    sockets = total_cores / smt_supported / physical_cores; // Idea borrowed from lscpu
+  else
+    sockets = total_cores / physical_cores;    
+  ```
+
+### 7. How to get cache topology?
+__Involved code: [get_cache_topology_amd (cpuid.c)](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/cpuid.c), [apic.c](https://github.com/Dr-Noob/cpufetch/blob/master/src/x86/apic.c)__
+
+The topology of a cache gives us information about how many caches we have at a given level. It usually follows the rule of:
+- L1: The same as the number of cores (one L1i and one L1d per core).
+- L2: If L2 is the last level cache, one L2. If not, the same as the number of cores (one L2 per core).
+- L3: One L3 cache per socket (shared among all cores).
+
+These assumptions are generally (but not always) true. For example, for the AMD Zen generation, or the Intel Xeon Phi KNL. Thus, cpufetch does not assume the topology but obtains it instead.
+
+- __Intel__: The idea is similar to the mentioned in CPU topology [[2](#references)](it also covers how to get cache topology using APIC id).
+
+- __AMD__: Again, we have to look for another path for AMD. This time, the way to do it is easier and (I think) more solid and future proof. The idea is to use extended CPUID leaf 0x1D. If the CPU does not support it, we can still guess the topology of the caches (as mentioned earlier). If it does, CPUID can give us how many cores shares a given level of cache. So, if we have the number of cores, we can guess how many caches are there for any given level (see __get_cache_topology_amd__).
+
+#### References
+- [1] [sandpile CPUID webpage](https://www.sandpile.org/x86/cpuid.htm)
+- [2] [CPU topology and cache topology: Intel](https://software.intel.com/content/www/us/en/develop/articles/intel-64-architecture-processor-topology-enumeration.html)
+- [3] [CPU topology: AMD](https://wiki.osdev.org/Detecting_CPU_Topology_(80x86))
+- [4] [lscpu](https://github.com/karelzak/util-linux/blob/master/sys-utils/lscpu.c)
+- [5] [Todd Allen's cpuid](http://www.etallen.com/cpuid.html)
+- [6] [AMD specific CPUID specification](https://www.amd.com/system/files/TechDocs/25481.pdf)
+- [7] [Intel vs AMD CPU Architectural Differences: Chips and Chiplets](https://c.mi.com/thread-2585048-1-0.html)
+
+In addition to all these resources, I found it very interesting to search in the Linux kernel source code (for example, the directory [`arch/x86/kernel/cpu/`](https://elixir.bootlin.com/linux/latest/source/arch/x86/kernel/cpu)), because sometimes you can find ideas that cannot be found anywhere else!

doc/README.md

@@ -0,0 +1,69 @@
+# cpufetch programming documentation (v0.98)
+This documentation explains how cpufetch works internally and all the design decisions I made. This document intends to be useful for me in the future, for everyone interested in the project, and for anyone who is trying to obtain any specific information from the CPU. In this way, this can be used as a manual or a page that collects interesting material in this area.
+
+### 1. Basics
+cpufetch works for __x86_64__ (Intel and AMD),  __ARM__ and __PowerPC__ CPUs. However, cpufetch is expected to work better on x86_64, because the codebase is older and has been tested much more than the ARM and PowerPC versions. Depending on the architecture, cpufetch choose certain files to be compiled. A summarized tree of the source code of cpufetch is shown below.
+
+```
+cpufetch/
+├── doc
+│   ├── DOCUMENTATION_ARM.md
+|   ├── DOCUMENTATION_PPC.md
+│   ├── DOCUMENTATION_X86.md
+│   └── README.md
+├── Makefile
+├── README.md
+└── src/
+    ├── arm/
+    │   ├── midr.c
+    │   ├── midr.h
+    │   └── other files ...
+    ├── common/
+    │   └── common files ...
+    ├── ppc/
+    |   ├── ppc.c
+    |   ├── ppc.h
+    |   └── other files ...
+    └── x86/
+        ├── cpuid.c
+        ├── cpuid.h
+        └── other files ...
+```
+
+Source code is divided into four directories:
+
+- `common/`: Source code shared between all architectures
+- `arm/`: ARM source code
+- `ppc/`: PowerPC source code
+- `x86/`: x86 source code
+
+##### 1.1 Basics (x86_64)
+
+In x86, __cpufetch works using the CPUID instruction__. It is called directly using assembly (see `src/x86/cpuid_asm.c`). To understand how CPUID works, see [DOCUMENTATION_X86.md](https://github.com/Dr-Noob/cpufetch/blob/master/doc/DOCUMENTATION_X86.md).
+
+At the beginning of execution, cpufetch needs to know the max standard CPUID level and max CPUID extended level supported in the running CPU. We also need to know if the x86 CPU is Intel or AMD because sometimes, the way to obtain the information depends on the manufacturer. This information will be stored in:
+
+```
+struct cpuInfo {
+  ...
+  VENDOR cpu_vendor;
+  uint32_t maxLevels;  
+  uint32_t maxExtendedLevels;
+  ...
+};
+```
+
+To use any CPUID leaf, cpufetch always needs to check that it is supported in the current CPU.
+
+##### 1.2 Basics (ARM)
+In ARM, __cpufetch works using the MIDR register and Linux filesystem__. MIDR (Main ID Register) is read from `/proc/cpuinfo`. It allows the detection of the microarchitecture of the cores. Furthermore, Linux filesystem `/sys/devices/system/cpu/` is used to fetch the number of cores and other information. This is the main reason to explain __why `cpufetch` for ARM only works on Linux systems.__
+
+##### 1.3 Basics (PowerPC)
+In PowerPC, __cpufetch works using the PVR register and Linux filesystem__. PVR (Processor Version Register) is read using assembly and it is used to identify the microarchitecture of the CPU. Linux is also used to query the rest of the information, like the CPU topology, frequency, etc. This is the main reason to explain __why `cpufetch` for PowerPC only works on Linux systems.__
+
+##### 1.4 Documentation organization
+The rest of the documentation is divided in specific files for each architecture, since each one needs different implementations:
+
+- [DOCUMENTATION_ARM.md](https://github.com/Dr-Noob/cpufetch/blob/master/doc/DOCUMENTATION_ARM.md)
+- [DOCUMENTATION_PPC.md](https://github.com/Dr-Noob/cpufetch/blob/master/doc/DOCUMENTATION_PPC.md)
+- [DOCUMENTATION_X86.md](https://github.com/Dr-Noob/cpufetch/blob/master/doc/DOCUMENTATION_X86.md)

msr.c

@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#define MSR_PSTATE_0 0xC0010064
+
+// Reads a 64-bit MSR value from a given CPU core
+int read_msr(int cpu, uint64_t msr_addr, uint64_t *value) {
+    char msr_path[64];
+    snprintf(msr_path, sizeof(msr_path), "/dev/cpu/%d/msr", cpu);
+
+    int fd = open(msr_path, O_RDONLY);
+    if (fd < 0) {
+        perror("open");
+        return -1;
+    }
+
+    if (lseek(fd, msr_addr, SEEK_SET) == -1) {
+        perror("lseek");
+        close(fd);
+        return -1;
+    }
+
+    if (read(fd, value, sizeof(*value)) != sizeof(*value)) {
+        perror("read");
+        close(fd);
+        return -1;
+    }
+
+    close(fd);
+    return 0;
+}
+
+int main(int argc, char **argv) {
+    int cpu = 0;
+    if (argc > 1) cpu = atoi(argv[1]);
+
+    uint64_t val;
+    if (read_msr(cpu, MSR_PSTATE_0, &val) != 0) {
+        fprintf(stderr, "Failed to read MSR on CPU %d\n", cpu);
+        return 1;
+    }
+
+    unsigned int fid = val & 0xff;          // bits [7:0]
+    unsigned int did = (val >> 8) & 0x3f;   // bits [13:8]
+    double freq_mhz = (fid * 25.0) / (1 << did);  // 25 MHz ref clock on Zen CPUs
+
+    printf("CPU%d: MSR[0x%lx] = 0x%016llx\n", cpu, (unsigned long)MSR_PSTATE_0, (unsigned long long)val);
+    printf("FID: %u, DID: %u\n", fid, did);
+    printf("Estimated frequency: %.2f MHz\n", freq_mhz);
+
+    return 0;
+}

src/apic.c

@@ -1,260 +0,0 @@
-#ifdef _WIN32
-#include <windows.h>
-#else
-#define _GNU_SOURCE
-#include <sched.h>
-#endif
-
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <stdio.h>
-
-#include "apic.h"
-#include "cpuid_asm.h"
-#include "global.h"
-
-/*
- * bit_scan_reverse and create_mask code taken from:
- * https://software.intel.com/content/www/us/en/develop/articles/intel-64-architecture-processor-topology-enumeration.html
- */
-unsigned char bit_scan_reverse(uint32_t* index, uint64_t mask) {
-  for(uint64_t i = (8 * sizeof(uint64_t)); i > 0; i--) {
-    if((mask & (1LL << (i-1))) != 0) {
-      *index = (uint64_t) (i-1);
-      break;
-    }
-  }
-  return (unsigned char) (mask != 0);
-}
-
-uint32_t create_mask(uint32_t num_entries, uint32_t *mask_width) {
-  uint32_t i = 0;
-  uint64_t k = 0;
-
-  // NearestPo2(numEntries) is the nearest power of 2 integer that is not less than numEntries
-  // The most significant bit of (numEntries * 2 -1) matches the above definition
-
-  k = (uint64_t)(num_entries) * 2 -1;
-
-  if (bit_scan_reverse(&i, k) == 0) {
-    if (mask_width) *mask_width = 0;
-    return 0;
-  }
-
-  if (mask_width) *mask_width = i;
-  if (i == 31) return (uint32_t ) -1;
-
-  return (1 << i) -1;
-}
-
-uint32_t get_apic_id(bool x2apic_id) {
-  uint32_t eax = 0;
-  uint32_t ebx = 0;
-  uint32_t ecx = 0;
-  uint32_t edx = 0;
-  
-  if(x2apic_id) {
-    eax = 0x0000000B;
-    cpuid(&eax, &ebx, &ecx, &edx);
-    return edx;
-  }
-  else {
-    eax = 0x00000001;
-    cpuid(&eax, &ebx, &ecx, &edx);
-    return (ebx >> 24);
-  }
-}
-
-bool bind_to_cpu(int cpu_id) {
-  #ifdef _WIN32
-    HANDLE process = GetCurrentProcess();
-    DWORD_PTR processAffinityMask = 1 << cpu_id;
-    return SetProcessAffinityMask(process, processAffinityMask);
-  #else    
-    cpu_set_t currentCPU;
-    CPU_ZERO(&currentCPU);
-    CPU_SET(cpu_id, &currentCPU);
-    if (sched_setaffinity (0, sizeof(currentCPU), &currentCPU) == -1) {
-      perror("sched_setaffinity");
-      return false;
-    }
-    return true;
-  #endif  
-}
-
-bool fill_topo_masks_apic(struct topology** topo) {
-  uint32_t eax = 0x00000001;
-  uint32_t ebx = 0;
-  uint32_t ecx = 0;
-  uint32_t edx = 0;
-  uint32_t core_plus_smt_id_max_cnt;
-  uint32_t core_id_max_cnt;
-  uint32_t smt_id_per_core_max_cnt;
-  
-  cpuid(&eax, &ebx, &ecx, &edx);
-  
-  core_plus_smt_id_max_cnt = (ebx >> 16) & 0xFF;
-  
-  eax = 0x00000004;
-  ecx = 0;
-  cpuid(&eax, &ebx, &ecx, &edx);
-  
-  core_id_max_cnt = (eax >> 26) + 1;
-  smt_id_per_core_max_cnt = core_plus_smt_id_max_cnt / core_id_max_cnt; 
-            
-  (*topo)->apic->smt_mask = create_mask(smt_id_per_core_max_cnt, &((*topo)->apic->smt_mask_width));    
-  (*topo)->apic->core_mask = create_mask(core_id_max_cnt,&((*topo)->apic->pkg_mask_shift));
-  (*topo)->apic->pkg_mask_shift += (*topo)->apic->smt_mask_width;
-  (*topo)->apic->core_mask <<= (*topo)->apic->smt_mask_width;
-  (*topo)->apic->pkg_mask = (-1) ^ ((*topo)->apic->core_mask | (*topo)->apic->smt_mask);
-  
-  return true;
-}
-
-bool fill_topo_masks_x2apic(struct topology** topo) {
-  int32_t level_type;
-  int32_t level_shift;
-  
-  int32_t coreplus_smt_mask = 0;
-  bool level2 = false;
-  bool level1 = false;
-  
-  uint32_t eax = 0;
-  uint32_t ebx = 0;
-  uint32_t ecx = 0;
-  uint32_t edx = 0;
-  uint32_t i = 0;
-  
-  while(true) {
-    eax = 0x0000000B;
-    ecx = i;
-    cpuid(&eax, &ebx, &ecx, &edx);
-    if(ebx == 0) break;
-    
-    level_type = (ecx >> 8) & 0xFF;
-    level_shift = eax & 0xFFF; 
-    
-    switch(level_type) {      
-      case 1: // SMT
-        (*topo)->apic->smt_mask = ~(0xFFFFFFFF << level_shift);
-        (*topo)->apic->smt_mask_width = level_shift;
-        (*topo)->smt_supported = ebx & 0xFFFF;
-        level1 = true;
-        break;
-      case 2: // Core
-        coreplus_smt_mask = ~(0xFFFFFFFF << level_shift);
-        (*topo)->apic->pkg_mask_shift =  level_shift;
-        (*topo)->apic->pkg_mask = (-1) ^ coreplus_smt_mask;
-        level2 = true;
-        break;
-      default:
-        printErr("Found invalid level when querying topology: %d", level_type);
-        break;
-    }
-    
-    i++; // sublevel to query
-  }
-  
-  if (level1 && level2) {
-    (*topo)->apic->core_mask = coreplus_smt_mask ^ (*topo)->apic->smt_mask;
-  }
-  else if (!level2 && level1) {
-    (*topo)->apic->core_mask = 0;
-    (*topo)->apic->pkg_mask_shift = (*topo)->apic->smt_mask_width;
-    (*topo)->apic->pkg_mask =  (-1) ^ (*topo)->apic->smt_mask;
-  }
-  else {
-    printErr("SMT level was not found when querying topology");
-    return false;
-  }
-
-  return true;
-}
-
-bool build_topo_from_apic(uint32_t* apic_pkg, uint32_t* apic_smt, struct topology** topo) {
-  uint32_t sockets[64];
-  uint32_t smt[64];
-  
-  memset(sockets, 0, sizeof(uint32_t) * 64);
-  memset(smt, 0, sizeof(uint32_t) * 64);
-  
-  for(int i=0; i < (*topo)->total_cores; i++) {
-    sockets[apic_pkg[i]] = 1;
-    smt[apic_smt[i]] = 1;
-  }
-  for(int i=0; i < 64; i++) {
-    if(sockets[i] != 0)
-      (*topo)->sockets++;
-    if(smt[i] != 0)
-      (*topo)->smt_available++;
-  }
-  
-  (*topo)->logical_cores = (*topo)->total_cores / (*topo)->sockets;
-  (*topo)->physical_cores = (*topo)->logical_cores / (*topo)->smt_available;
-  
-  return true;
-}
-
-bool get_topology_from_apic(uint32_t cpuid_max_levels, struct topology** topo) {    
-  uint32_t apic_id;
-  uint32_t* apic_pkg = malloc(sizeof(uint32_t) * (*topo)->total_cores);
-  uint32_t* apic_core = malloc(sizeof(uint32_t) * (*topo)->total_cores);
-  uint32_t* apic_smt = malloc(sizeof(uint32_t) * (*topo)->total_cores);
-  bool x2apic_id = cpuid_max_levels >= 0x0000000B;
-  
-  if(x2apic_id) {
-    if(!fill_topo_masks_x2apic(topo))
-      return false;
-  }
-  else {
-    if(!fill_topo_masks_apic(topo))
-      return false;    
-  }
-  
-  for(int i=0; i < (*topo)->total_cores; i++) {
-    if(!bind_to_cpu(i)) {
-      printErr("Failed binding to CPU %d", i);
-      return false;
-    }
-    apic_id = get_apic_id(x2apic_id);
-    
-    apic_pkg[i] = (apic_id & (*topo)->apic->pkg_mask) >> (*topo)->apic->pkg_mask_shift;
-    apic_core[i] = (apic_id & (*topo)->apic->core_mask) >> (*topo)->apic->smt_mask_width;
-    apic_smt[i] = apic_id & (*topo)->apic->smt_mask;
-  }
-  
-  /* DEBUG
-  for(int i=0; i < (*topo)->total_cores; i++)
-    printf("[%2d] 0x%.8X\n", i, apic_pkg[i]);
-  printf("\n");
-  for(int i=0; i < (*topo)->total_cores; i++)
-    printf("[%2d] 0x%.8X\n", i, apic_core[i]);
-  printf("\n");
-  for(int i=0; i < (*topo)->total_cores; i++)
-    printf("[%2d] 0x%.8X\n", i, apic_smt[i]);*/
-    
-  
-  bool ret = build_topo_from_apic(apic_pkg, apic_smt, topo);   
-  
-  // Assumption: If we cant get smt_available, we assume it is equal to smt_supported...
-  if(!x2apic_id) (*topo)->smt_supported = (*topo)->smt_available;
-  
-  return ret;
-} 
-
-// Used by AMD
-uint32_t is_smt_enabled(struct topology* topo) {
-  uint32_t id;
-  
-  for(int i = 0; i < topo->total_cores; i++) {
-    if(!bind_to_cpu(i)) {
-      printErr("Failed binding to CPU %d", i);
-      return false;
-    }
-    id = get_apic_id(true) & 1; // get the last bit
-    if(id == 1) return 2; // We assume there isn't any AMD CPU with more than 2th per core
-  }
-  
-  return 1;  
-}

src/apic.h

@@ -1,18 +0,0 @@
-#ifndef __APIC__
-#define __APIC__
-
-#include <stdbool.h>
-#include "cpuid.h"
-
-struct apic {
-  uint32_t pkg_mask;
-  uint32_t pkg_mask_shift;
-  uint32_t core_mask;
-  uint32_t smt_mask_width;
-  uint32_t smt_mask;
-};
-
-bool get_topology_from_apic(uint32_t cpuid_max_levels, struct topology** topo);
-uint32_t is_smt_enabled(struct topology* topo);
-
-#endif

src/args.c

@@ -1,230 +0,0 @@
-#include <getopt.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include "args.h"
-#include "global.h"
-
-#define ARG_STR_STYLE    "style"
-#define ARG_STR_COLOR    "color"
-#define ARG_STR_HELP     "help"
-#define ARG_STR_LEVELS   "levels"
-#define ARG_STR_VERBOSE  "verbose"
-#define ARG_STR_VERSION  "version"
-
-#define ARG_CHAR_STYLE   's'
-#define ARG_CHAR_COLOR   'c'
-#define ARG_CHAR_HELP    'h'
-#define ARG_CHAR_LEVELS  'l'
-#define ARG_CHAR_VERBOSE 'v'
-#define ARG_CHAR_VERSION 'v'
-
-#define STYLE_STR_1      "fancy"
-#define STYLE_STR_2      "retro"
-#define STYLE_STR_3      "legacy"
-
-struct args_struct {
-  bool levels_flag;
-  bool help_flag;
-  bool verbose_flag;
-  bool version_flag;
-  STYLE style;
-  struct colors* colors;
-};
-
-static const char* SYTLES_STR_LIST[STYLES_COUNT] = { STYLE_STR_1, STYLE_STR_2, STYLE_STR_3 };
-static struct args_struct args;
-
-STYLE get_style() {
-  return args.style;
-}
-
-struct colors* get_colors() {
-  return args.colors;
-}
-
-bool show_help() {
-  return args.help_flag;
-}
-
-bool show_version() {
-  return args.version_flag;
-}
-
-bool show_levels() {
-  return args.levels_flag;
-}
-
-bool verbose_enabled() {
-  return args.verbose_flag;
-}
-
-STYLE parse_style(char* style) {
-  int i = 0;
-  while(i != STYLES_COUNT && strcmp(SYTLES_STR_LIST[i],style) != 0)
-    i++;
-
-  if(i == STYLES_COUNT)
-    return STYLE_INVALID;
-  return i;
-}
-
-void free_colors_struct(struct colors* cs) {
-  free(cs->c1);
-  free(cs->c2);
-  free(cs->c3);
-  free(cs->c4);
-  free(cs);
-}
-
-bool parse_color(char* optarg, struct colors** cs) {
-  *cs = malloc(sizeof(struct colors));        
-  (*cs)->c1 = malloc(sizeof(struct color));
-  (*cs)->c2 = malloc(sizeof(struct color));
-  (*cs)->c3 = malloc(sizeof(struct color));
-  (*cs)->c4 = malloc(sizeof(struct color));
-  struct color** c1 = &((*cs)->c1);
-  struct color** c2 = &((*cs)->c2);
-  struct color** c3 = &((*cs)->c3);
-  struct color** c4 = &((*cs)->c4);
-  int32_t ret;
-  
-  ret = sscanf(optarg, "%d,%d,%d:%d,%d,%d:%d,%d,%d:%d,%d,%d", 
-               &(*c1)->R, &(*c1)->G, &(*c1)->B,
-               &(*c2)->R, &(*c2)->G, &(*c2)->B,
-               &(*c3)->R, &(*c3)->G, &(*c3)->B,
-               &(*c4)->R, &(*c4)->G, &(*c4)->B);
-  
-  if(ret != 12) {
-    printErr("Expected to read 12 values for color but read %d", ret);
-    return false;    
-  }
-  
-  //TODO: Refactor c1->R c2->R ... to c[i]->R
-  if((*c1)->R < 0 || (*c1)->R > 255) {
-    printErr("Red in color 1 is invalid. Must be in range (0, 255)");
-    return false;
-  }
-  if((*c1)->G < 0 || (*c1)->G > 255) {
-    printErr("Green in color 1 is invalid. Must be in range (0, 255)");
-    return false;
-  }
-  if((*c1)->B < 0 || (*c1)->B > 255) {
-    printErr("Blue in color 1 is invalid. Must be in range (0, 255)");
-    return false;
-  }
-  if((*c2)->R < 0 || (*c2)->R > 255) {
-    printErr("Red in color 2 is invalid. Must be in range (0, 255)");
-    return false;
-  }
-  if((*c2)->G < 0 || (*c2)->G > 255) {
-    printErr("Green in color 2 is invalid. Must be in range (0, 255)");
-    return false;
-  }
-  if((*c2)->B < 0 || (*c2)->B > 255) {
-    printErr("Blue in color 2 is invalid. Must be in range (0, 255)");
-    return false;
-  }
-  
-  return true;      
-}
-
-bool parse_args(int argc, char* argv[]) {
-  int c;
-  int option_index = 0;  
-  opterr = 0;
-
-  bool color_flag = false;
-  args.levels_flag = false;
-  args.verbose_flag = false;
-  args.help_flag = false;
-  args.style = STYLE_EMPTY;
-  args.colors = NULL;
-
-  static struct option long_options[] = {
-      {ARG_STR_STYLE,    required_argument, 0, ARG_CHAR_STYLE   },
-      {ARG_STR_COLOR,    required_argument, 0, ARG_CHAR_COLOR   },
-      {ARG_STR_HELP,     no_argument,       0, ARG_CHAR_HELP    },
-      {ARG_STR_LEVELS,   no_argument,       0, ARG_CHAR_LEVELS  },
-      {ARG_STR_VERBOSE,  no_argument,       0, ARG_CHAR_VERBOSE },
-      {ARG_STR_VERSION,  no_argument,       0, ARG_CHAR_VERSION },
-      {0, 0, 0, 0}
-  };
-
-  c = getopt_long(argc, argv, "", long_options, &option_index);
-
-  while (c != -1) {
-     if(c == ARG_CHAR_COLOR) {
-       if(color_flag) {
-         printErr("Color option specified more than once");
-         return false;
-       }
-       color_flag  = true;       
-       if(!parse_color(optarg, &args.colors)) {
-         printErr("Color parsing failed");
-         return false;
-       }
-     }
-     else if(c == ARG_CHAR_STYLE) {
-       if(args.style != STYLE_EMPTY) {
-         printErr("Style option specified more than once");
-         return false;
-       }
-       args.style = parse_style(optarg);
-       if(args.style == STYLE_INVALID) {
-         printErr("Invalid style '%s'",optarg);
-         return false;
-       }
-     }
-     else if(c == ARG_CHAR_HELP) {
-       if(args.help_flag) {
-         printErr("Help option specified more than once");
-         return false;
-       }
-       args.help_flag  = true;
-     }
-     else if(c == ARG_CHAR_VERBOSE) {
-       if(args.verbose_flag) {
-         printErr("Verbose option specified more than once");
-         return false;
-       }
-       args.verbose_flag  = true;
-     }
-     else if(c == ARG_CHAR_LEVELS) {
-       if(args.levels_flag) {
-         printErr("Levels option specified more than once");
-         return false;
-       }
-       args.levels_flag  = true;
-     }
-     else if (c == ARG_CHAR_VERSION) {
-       if(args.version_flag) {
-         printErr("Version option specified more than once");
-         return false;
-       }
-       args.version_flag = true;
-     }
-     else if(c == '?') {
-       printWarn("Invalid options");
-       args.help_flag  = true;
-       break;
-     }
-     else
-      printBug("Bug at line number %d in file %s", __LINE__, __FILE__);
-
-    option_index = 0;
-    c = getopt_long(argc, argv,"",long_options, &option_index);
-  }
-
-  if (optind < argc) {
-    printWarn("Invalid options");
-    args.help_flag  = true;
-  }
-
-  if((args.help_flag + args.version_flag + color_flag) > 1) {
-    printWarn("You should specify just one option");
-    args.help_flag  = true;
-  }
-
-  return true;
-}

src/args.h

@@ -1,31 +0,0 @@
-#ifndef __ARGS__
-#define __ARGS__
-
-#include <stdbool.h>
-#include <stdint.h>
-
-struct color {
-  int32_t R;
-  int32_t G;
-  int32_t B;
-};
-
-struct colors {
-  struct color* c1;
-  struct color* c2;
-  struct color* c3;
-  struct color* c4;
-};
-
-#include "printer.h"
-
-bool parse_args(int argc, char* argv[]);
-bool show_help();
-bool show_levels();
-bool show_version();
-bool verbose_enabled();
-void free_colors_struct(struct colors* cs);
-struct colors* get_colors();
-STYLE get_style();
-
-#endif

src/arm/midr.c

@@ -0,0 +1,697 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stdbool.h>
+#include <errno.h>
+
+#ifdef __linux__
+  #include <sys/auxv.h>
+  #include <asm/hwcap.h>
+  #include "../common/freq.h"
+#elif defined __APPLE__ || __MACH__
+  #include "../common/sysctl.h"
+#elif defined _WIN32
+  #define WIN32_LEAN_AND_MEAN
+  #define NOMINMAX
+  #include <windows.h>
+#endif
+
+#include "../common/global.h"
+#include "../common/soc.h"
+#include "../common/args.h"
+#include "udev.h"
+#include "midr.h"
+#include "uarch.h"
+#include "sve.h"
+
+
+#if defined _WIN32
+// Windows stores processor information in registery at:
+// "HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor"
+// Within this directory, each core will get its own folder with
+// registery entries named `CP ####` that map to ARM system registers.
+// Ex. the MIDR register for core 0 is the `REG_QWORD` at:
+// "HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\CP 4000"
+// The name of these `CP ####`-registers follow their register ID encoding in hexadecimal
+// (op0&1):op1:crn:crm:op2.
+// More registers can be found here:
+// https://developer.arm.com/documentation/ddi0601/2024-06/AArch64-Registers
+// Some important ones:
+// CP 4000: MIDR_EL1
+// CP 4020: ID_AA64PFR0_EL1
+// CP 4021: ID_AA64PFR1_EL1
+// CP 4028: ID_AA64DFR0_EL1
+// CP 4029: ID_AA64DFR1_EL1
+// CP 402C: ID_AA64AFR0_EL1
+// CP 402D: ID_AA64AFR1_EL1
+// CP 4030: ID_AA64ISAR0_EL1
+// CP 4031: ID_AA64ISAR1_EL1
+// CP 4038: ID_AA64MMFR0_EL1
+// CP 4039: ID_AA64MMFR1_EL1
+// CP 403A: ID_AA64MMFR2_EL1
+
+bool read_registry_hklm_int(char* path, char* name, void* value, bool is64) {  
+  DWORD value_len;
+  int reg_type;
+  if (is64) {
+    value_len = sizeof(int64_t);
+    reg_type = RRF_RT_REG_QWORD;
+  }
+  else {
+    value_len = sizeof(int32_t);
+    reg_type = RRF_RT_REG_DWORD;
+  }
+
+  if(RegGetValueA(HKEY_LOCAL_MACHINE, path, name, reg_type, NULL, value, &value_len) != ERROR_SUCCESS) {
+    printBug("Error reading registry entry \"%s\\%s\"", path, name);
+    return false;
+  }
+  return true;
+}
+
+bool get_win32_core_info_int(uint32_t core_index, char* name, void* value, bool is64) {
+  // path + digits
+  uint32_t max_path_size = 45+3+1;
+  char* path = ecalloc(sizeof(char) * max_path_size, sizeof(char));
+  snprintf(path, max_path_size, "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\%u", core_index);
+  return read_registry_hklm_int(path, name, value, is64);
+}
+#endif
+
+bool cores_are_equal(int c1pos, int c2pos, uint32_t* midr_array, int32_t* freq_array) {
+  return midr_array[c1pos] == midr_array[c2pos] && freq_array[c1pos] == freq_array[c2pos];
+}
+
+struct cache* get_cache_info(struct cpuInfo* cpu) {
+  struct cache* cach = emalloc(sizeof(struct cache));
+  init_cache_struct(cach);
+
+  cach->max_cache_level = 2;
+  for(int i=0; i < cach->max_cache_level + 1; i++) {
+    cach->cach_arr[i]->exists = true;
+    cach->cach_arr[i]->num_caches = 1;
+    cach->cach_arr[i]->size = 0;
+  }
+
+  return cach;
+}
+
+struct frequency* get_frequency_info(uint32_t core) {
+  struct frequency* freq = emalloc(sizeof(struct frequency));
+
+  freq->measured = false;
+  freq->base = UNKNOWN_DATA;
+  freq->max = get_max_freq_from_file(core);
+  #ifdef __linux__
+    if (freq->max == UNKNOWN_DATA || measure_max_frequency_flag()) {
+      if (freq->max == UNKNOWN_DATA)
+        printWarn("Unable to find max frequency from udev, measuring CPU frequency");
+      freq->max = measure_max_frequency(core);
+      freq->measured = true;
+    }
+  #endif
+
+  return freq;
+}
+
+struct topology* get_topology_info(struct cpuInfo* cpu, struct cache* cach, uint32_t* midr_array, int32_t* freq_array, int socket_idx, int ncores) {
+  struct topology* topo = emalloc(sizeof(struct topology));
+  init_topology_struct(topo, cach);
+
+  int sockets_seen = 0;
+  int first_core_idx = 0;
+  int currrent_core_idx = 0;
+  int cores_in_socket = 0;
+
+  while(socket_idx + 1 > sockets_seen) {
+    if(currrent_core_idx < ncores && cores_are_equal(first_core_idx, currrent_core_idx, midr_array, freq_array)) {
+      currrent_core_idx++;
+      cores_in_socket++;
+    }
+    else {
+      topo->total_cores = cores_in_socket;
+      cores_in_socket = 0;
+      first_core_idx = currrent_core_idx;
+      sockets_seen++;
+    }
+  }
+
+  return topo;
+}
+
+int64_t get_peak_performance(struct cpuInfo* cpu) {
+  struct cpuInfo* ptr = cpu;
+
+  //First check we have consistent data
+  for(int i=0; i < cpu->num_cpus; ptr = ptr->next_cpu, i++) {
+    if(get_freq(ptr->freq) == UNKNOWN_DATA) {
+      return -1;
+    }
+  }
+
+  int64_t total_flops = 0;
+  ptr = cpu;
+
+  for(int i=0; i < cpu->num_cpus; ptr = ptr->next_cpu, i++) {
+    int vpus = get_number_of_vpus(ptr);
+    int vpus_width = get_vpus_width(ptr);
+    bool has_fma = has_fma_support(ptr);
+
+    int64_t flops = ptr->topo->total_cores * get_freq(ptr->freq) * 1000000 * vpus * (vpus_width/32);
+    if(has_fma) flops = flops * 2;
+
+    total_flops += flops;
+  }
+
+  return total_flops;
+}
+
+uint32_t fill_ids_from_midr(uint32_t* midr_array, int32_t* freq_array, uint32_t* ids_array, int len) {
+  uint32_t latest_id = 0;
+  bool found;
+  ids_array[0] = latest_id;
+
+  for (int i = 1; i < len; i++) {
+    int j = 0;
+    found = false;
+
+    for (j = 0; j < len && !found; j++) {
+      if (i != j && cores_are_equal(i, j, midr_array, freq_array)) {
+        if(j > i) {
+          latest_id++;
+          ids_array[i] = latest_id;
+        }
+        else {
+          ids_array[i] = ids_array[j];
+        }
+        found = true;
+      }
+    }
+    if(!found) {
+      latest_id++;
+      ids_array[i] = latest_id;
+    }
+  }
+
+  return latest_id+1;
+}
+
+void init_cpu_info(struct cpuInfo* cpu) {
+  cpu->next_cpu = NULL;
+}
+
+// We assume all cpus share the same hardware
+// capabilities but I'm not sure it is always
+// true...
+// ARM32 https://elixir.bootlin.com/linux/latest/source/arch/arm/include/uapi/asm/hwcap.h
+// ARM64 https://elixir.bootlin.com/linux/latest/source/arch/arm64/include/uapi/asm/hwcap.h
+struct features* get_features_info(void) {
+  struct features* feat = emalloc(sizeof(struct features));
+  bool *ptr = &(feat->AES);
+  for(uint32_t i = 0; i < sizeof(struct features)/sizeof(bool); i++, ptr++) {
+    *ptr = false;
+  }
+
+#ifdef __linux__
+  errno = 0;
+  long hwcaps = getauxval(AT_HWCAP);
+
+  if(errno == ENOENT) {
+    printWarn("Unable to retrieve AT_HWCAP using getauxval");
+  }
+#ifdef __aarch64__
+  else {
+    feat->AES = hwcaps & HWCAP_AES;
+    feat->CRC32 = hwcaps & HWCAP_CRC32;
+    feat->SHA1 = hwcaps & HWCAP_SHA1;
+    feat->SHA2 = hwcaps & HWCAP_SHA2;
+    feat->NEON = hwcaps & HWCAP_ASIMD;
+    feat->SVE = hwcaps & HWCAP_SVE;
+
+    hwcaps = getauxval(AT_HWCAP2);
+    if (errno == ENOENT) {
+      printWarn("Unable to retrieve AT_HWCAP2 using getauxval");
+    }
+    else {
+      #ifdef HWCAP2_SVE2
+        feat->SVE2 = hwcaps & HWCAP2_SVE2;
+      #endif
+    }
+  }
+#else
+  else {
+    feat->NEON = hwcaps & HWCAP_NEON;
+  }
+
+  hwcaps = getauxval(AT_HWCAP2);
+  if(errno == ENOENT) {
+    printWarn("Unable to retrieve AT_HWCAP2 using getauxval");
+  }
+  else {
+    feat->AES = hwcaps & HWCAP2_AES;
+    feat->CRC32 = hwcaps & HWCAP2_CRC32;
+    feat->SHA1 = hwcaps & HWCAP2_SHA1;
+    feat->SHA2 = hwcaps & HWCAP2_SHA2;
+    feat->SVE = false;
+    feat->SVE2 = false;
+  }
+#endif // ifdef __aarch64__
+#elif defined __APPLE__ || __MACH__
+  // Must be M1
+  feat->AES = true;
+  feat->CRC32 = true;
+  feat->SHA1 = true;
+  feat->SHA2 = true;
+  feat->NEON = true;
+  feat->SVE = false;
+  feat->SVE2 = false;
+#elif defined _WIN32
+
+  // CP 4020 maps to the ID_AA64PFR0_EL1 register on Windows
+  // https://developer.arm.com/documentation/ddi0601/2024-06/AArch64-Registers/ID-AA64PFR0-EL1--AArch64-Processor-Feature-Register-0
+  int64_t pfr0 = 0;
+  if(!get_win32_core_info_int(0, "CP 4020", &pfr0, true)) {
+    printWarn("Unable to retrieve PFR0 via registry");
+  }
+  else {
+    // AdvSimd[23:20]
+    // -1: Not available
+    //  0: AdvSimd support
+    //  1: AdvSimd support + FP16
+    int8_t adv_simd = ((int64_t)(pfr0 << (60 - 20)) >> 60);
+    feat->NEON = (adv_simd >= 0);
+
+    // SVE[35:32]
+    feat->SVE = (pfr0 >> 32) & 0xF ? true : false;
+  }
+
+  // Windoes does not expose a registry entry for the ID_AA64ZFR0_EL1 register
+  // this would have mapped to "CP 4024".
+  feat->SVE2 = false;
+
+  // CP 4030 maps to the ID_AA64ISAR0_EL1 register on Windows
+  // https://developer.arm.com/documentation/ddi0601/2024-06/AArch64-Registers/ID-AA64ISAR0-EL1--AArch64-Instruction-Set-Attribute-Register-0
+  int64_t isar0 = 0;
+  if(!get_win32_core_info_int(0, "CP 4030", &isar0, true)) {
+    printWarn("Unable to retrieve ISAR0 via registry");
+  }
+  else {
+    // AES[7:4]
+    feat->AES = (isar0 >> 4) & 0xF ? true : false;
+    // SHA1[11:8]
+    feat->SHA1 = (isar0 >> 8) & 0xF ? true : false;
+    // SHA2[15:12]
+    feat->SHA2 = (isar0 >> 12) & 0xF ? true : false;
+    // CRC32[19:16]
+    feat->CRC32 = (isar0 >> 16) & 0xF ? true : false;
+  }
+#endif  // ifdef __linux__
+
+  if (feat->SVE || feat->SVE2) {
+    feat->cntb = sve_cntb();
+  }
+
+  return feat;
+}
+
+#ifdef __linux__
+struct cpuInfo* get_cpu_info_linux(struct cpuInfo* cpu) {
+  init_cpu_info(cpu);
+  int ncores = get_ncores_from_cpuinfo();
+  bool success = false;
+  int32_t* freq_array = emalloc(sizeof(uint32_t) * ncores);
+  uint32_t* midr_array = emalloc(sizeof(uint32_t) * ncores);
+  uint32_t* ids_array = emalloc(sizeof(uint32_t) * ncores);
+
+  for(int i=0; i < ncores; i++) {
+    midr_array[i] = get_midr_from_cpuinfo(i, &success);
+
+    if(!success) {
+      printWarn("Unable to fetch MIDR for core %d. This is probably because the core is offline", i);
+      midr_array[i] = midr_array[0];
+    }
+
+    freq_array[i] = get_max_freq_from_file(i);
+    if(freq_array[i] == UNKNOWN_DATA) {
+      printWarn("Unable to fetch max frequency for core %d. This is probably because the core is offline", i);
+      freq_array[i] = freq_array[0];
+    }
+  }
+  uint32_t sockets = fill_ids_from_midr(midr_array, freq_array, ids_array, ncores);
+
+  struct cpuInfo* ptr = cpu;
+  int midr_idx = 0;
+  int tmp_midr_idx = 0;
+  for(uint32_t i=0; i < sockets; i++) {
+    if(i > 0) {
+      ptr->next_cpu = emalloc(sizeof(struct cpuInfo));
+      ptr = ptr->next_cpu;
+      init_cpu_info(ptr);
+
+      tmp_midr_idx = midr_idx;
+      while(cores_are_equal(midr_idx, tmp_midr_idx, midr_array, freq_array)) tmp_midr_idx++;
+      midr_idx = tmp_midr_idx;
+    }
+
+    ptr->midr = midr_array[midr_idx];
+    ptr->arch = get_uarch_from_midr(ptr->midr, ptr);
+
+    ptr->feat = get_features_info();
+    ptr->freq = get_frequency_info(midr_idx);
+    ptr->cach = get_cache_info(ptr);
+    ptr->topo = get_topology_info(ptr, ptr->cach, midr_array, freq_array, i, ncores);
+  }
+
+  cpu->num_cpus = sockets;
+  cpu->hv = emalloc(sizeof(struct hypervisor));
+  cpu->hv->present = false;
+  cpu->soc = get_soc(cpu);
+  cpu->peak_performance = get_peak_performance(cpu);
+
+  return cpu;
+}
+
+#elif defined __APPLE__ || __MACH__
+void fill_cpu_info_firestorm_icestorm(struct cpuInfo* cpu, uint32_t pcores, uint32_t ecores) {
+  // 1. Fill ICESTORM
+  struct cpuInfo* ice = cpu;
+
+  ice->midr = MIDR_APPLE_M1_ICESTORM;
+  ice->arch = get_uarch_from_midr(ice->midr, ice);
+  ice->cach = get_cache_info(ice);
+  ice->feat = get_features_info();
+  ice->topo = malloc(sizeof(struct topology));
+  ice->topo->cach = ice->cach;
+  ice->topo->total_cores = ecores;
+  ice->freq = malloc(sizeof(struct frequency));
+  ice->freq->base = UNKNOWN_DATA;
+  ice->freq->max = 2064;
+  ice->hv = malloc(sizeof(struct hypervisor));
+  ice->hv->present = false;
+  ice->next_cpu = malloc(sizeof(struct cpuInfo));
+
+  // 2. Fill FIRESTORM
+  struct cpuInfo* fire = ice->next_cpu;
+  fire->midr = MIDR_APPLE_M1_FIRESTORM;
+  fire->arch = get_uarch_from_midr(fire->midr, fire);
+  fire->cach = get_cache_info(fire);
+  fire->feat = get_features_info();
+  fire->topo = malloc(sizeof(struct topology));
+  fire->topo->cach = fire->cach;
+  fire->topo->total_cores = pcores;
+  fire->freq = malloc(sizeof(struct frequency));
+  fire->freq->base = UNKNOWN_DATA;
+  fire->freq->max = 3200;
+  fire->hv = malloc(sizeof(struct hypervisor));
+  fire->hv->present = false;
+  fire->next_cpu = NULL;
+}
+
+void fill_cpu_info_avalanche_blizzard(struct cpuInfo* cpu, uint32_t pcores, uint32_t ecores) {
+  // 1. Fill BLIZZARD
+  struct cpuInfo* bli = cpu;
+
+  bli->midr = MIDR_APPLE_M2_BLIZZARD;
+  bli->arch = get_uarch_from_midr(bli->midr, bli);
+  bli->cach = get_cache_info(bli);
+  bli->feat = get_features_info();
+  bli->topo = malloc(sizeof(struct topology));
+  bli->topo->cach = bli->cach;
+  bli->topo->total_cores = ecores;
+  bli->freq = malloc(sizeof(struct frequency));
+  bli->freq->base = UNKNOWN_DATA;
+  bli->freq->max = 2800;
+  bli->hv = malloc(sizeof(struct hypervisor));
+  bli->hv->present = false;
+  bli->next_cpu = malloc(sizeof(struct cpuInfo));
+
+  // 2. Fill AVALANCHE
+  struct cpuInfo* ava = bli->next_cpu;
+  ava->midr = MIDR_APPLE_M2_AVALANCHE;
+  ava->arch = get_uarch_from_midr(ava->midr, ava);
+  ava->cach = get_cache_info(ava);
+  ava->feat = get_features_info();
+  ava->topo = malloc(sizeof(struct topology));
+  ava->topo->cach = ava->cach;
+  ava->topo->total_cores = pcores;
+  ava->freq = malloc(sizeof(struct frequency));
+  ava->freq->base = UNKNOWN_DATA;
+  ava->freq->max = 3500;
+  ava->hv = malloc(sizeof(struct hypervisor));
+  ava->hv->present = false;
+  ava->next_cpu = NULL;
+}
+
+void fill_cpu_info_everest_sawtooth(struct cpuInfo* cpu, uint32_t pcores, uint32_t ecores) {
+  // 1. Fill SAWTOOTH
+  struct cpuInfo* saw = cpu;
+
+  saw->midr = MIDR_APPLE_M3_SAWTOOTH;
+  saw->arch = get_uarch_from_midr(saw->midr, saw);
+  saw->cach = get_cache_info(saw);
+  saw->feat = get_features_info();
+  saw->topo = malloc(sizeof(struct topology));
+  saw->topo->cach = saw->cach;
+  saw->topo->total_cores = ecores;
+  saw->freq = malloc(sizeof(struct frequency));
+  saw->freq->base = UNKNOWN_DATA;
+  saw->freq->max = 2750;
+  saw->hv = malloc(sizeof(struct hypervisor));
+  saw->hv->present = false;
+  saw->next_cpu = malloc(sizeof(struct cpuInfo));
+
+  // 2. Fill EVEREST
+  struct cpuInfo* eve = saw->next_cpu;
+  eve->midr = MIDR_APPLE_M3_EVEREST;
+  eve->arch = get_uarch_from_midr(eve->midr, eve);
+  eve->cach = get_cache_info(eve);
+  eve->feat = get_features_info();
+  eve->topo = malloc(sizeof(struct topology));
+  eve->topo->cach = eve->cach;
+  eve->topo->total_cores = pcores;
+  eve->freq = malloc(sizeof(struct frequency));
+  eve->freq->base = UNKNOWN_DATA;
+  eve->freq->max = 4050;
+  eve->hv = malloc(sizeof(struct hypervisor));
+  eve->hv->present = false;
+  eve->next_cpu = NULL;
+}
+
+struct cpuInfo* get_cpu_info_mach(struct cpuInfo* cpu) {
+  // https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_system_capabilities
+  uint32_t nperflevels = get_sys_info_by_name("hw.nperflevels");
+
+  if((cpu->num_cpus = nperflevels) != 2) {
+    printBug("Expected to find SoC with 2 perf levels, found: %d", cpu->num_cpus);
+    return NULL;
+  }
+
+  uint32_t pcores = get_sys_info_by_name("hw.perflevel0.physicalcpu");
+  uint32_t ecores = get_sys_info_by_name("hw.perflevel1.physicalcpu");
+  if(ecores <= 0) {
+    printBug("Expected to find a numer of ecores > 0, found: %d", ecores);
+    return NULL;
+  }
+  if(pcores <= 0) {
+    printBug("Expected to find a numer of pcores > 0, found: %d", pcores);
+    return NULL;
+  }
+
+  uint32_t cpu_family = get_sys_info_by_name("hw.cpufamily");
+  // Manually fill the cpuInfo assuming that
+  // the CPU is an Apple SoC
+  if(cpu_family == CPUFAMILY_ARM_FIRESTORM_ICESTORM) {
+    fill_cpu_info_firestorm_icestorm(cpu, pcores, ecores);
+    cpu->soc = get_soc(cpu);
+    cpu->peak_performance = get_peak_performance(cpu);
+  }
+  else if(cpu_family == CPUFAMILY_ARM_AVALANCHE_BLIZZARD) {
+    fill_cpu_info_avalanche_blizzard(cpu, pcores, ecores);
+    cpu->soc = get_soc(cpu);
+    cpu->peak_performance = get_peak_performance(cpu);
+  }
+  else if(cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH ||
+          cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_2   ||
+          cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_PRO ||
+          cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_MAX) {
+    fill_cpu_info_everest_sawtooth(cpu, pcores, ecores);
+    cpu->soc = get_soc(cpu);
+    cpu->peak_performance = get_peak_performance(cpu);
+  }
+  else {
+    printBugCheckRelease("Found invalid cpu_family: 0x%.8X", cpu_family);
+    return NULL;
+  }
+
+  return cpu;
+}
+#elif defined _WIN32
+struct cpuInfo* get_cpu_info_windows(struct cpuInfo* cpu) {
+  init_cpu_info(cpu);
+
+  SYSTEM_INFO sys_info;
+  GetSystemInfo(&sys_info);
+  int ncores = sys_info.dwNumberOfProcessors;
+
+  uint32_t* midr_array = emalloc(sizeof(uint32_t) * ncores);
+  int32_t* freq_array = emalloc(sizeof(uint32_t) * ncores);
+  uint32_t* ids_array = emalloc(sizeof(uint32_t) * ncores);
+  for(int i=0; i < ncores; i++) {
+    // Cast from 64 to 32 bit to be able to re-use the pre-existing
+    // functions such as fill_ids_from_midr and cores_are_equal
+    int64_t midr_64;
+    if(!get_win32_core_info_int(i, "CP 4000", &midr_64, true)) {
+      return NULL;
+    }
+    midr_array[i] = midr_64;
+    if(!get_win32_core_info_int(i, "~MHz", &freq_array[i], false)) {
+      return NULL;
+    }
+  }
+
+  uint32_t sockets = fill_ids_from_midr(midr_array, freq_array, ids_array, ncores);
+
+  struct cpuInfo* ptr = cpu;
+  int midr_idx = 0;
+  int tmp_midr_idx = 0;
+  for(uint32_t i=0; i < sockets; i++) {
+    if(i > 0) {
+      ptr->next_cpu = emalloc(sizeof(struct cpuInfo));
+      ptr = ptr->next_cpu;
+      init_cpu_info(ptr);
+
+      tmp_midr_idx = midr_idx;
+      while(cores_are_equal(midr_idx, tmp_midr_idx, midr_array, freq_array)) tmp_midr_idx++;
+      midr_idx = tmp_midr_idx;
+    }
+
+    ptr->midr = midr_array[midr_idx];
+    ptr->arch = get_uarch_from_midr(ptr->midr, ptr);
+
+    ptr->feat = get_features_info();
+    
+    ptr->freq = emalloc(sizeof(struct frequency));
+    ptr->freq->measured = false;
+    ptr->freq->base = freq_array[midr_idx];
+    ptr->freq->max = UNKNOWN_DATA;
+
+    ptr->cach = get_cache_info(ptr);
+    ptr->topo = get_topology_info(ptr, ptr->cach, midr_array, freq_array, i, ncores);
+  }
+
+  cpu->num_cpus = sockets;
+  cpu->hv = emalloc(sizeof(struct hypervisor));
+  cpu->hv->present = false;
+  cpu->soc = get_soc(cpu);
+  cpu->peak_performance = get_peak_performance(cpu);
+
+  return cpu;
+}
+#endif
+
+struct cpuInfo* get_cpu_info(void) {
+  struct cpuInfo* cpu = malloc(sizeof(struct cpuInfo));
+  init_cpu_info(cpu);
+
+  #ifdef __linux__
+    return get_cpu_info_linux(cpu);
+  #elif defined __APPLE__ || __MACH__
+    return get_cpu_info_mach(cpu);
+  #elif defined _WIN32
+    return get_cpu_info_windows(cpu);
+  #endif
+}
+
+char* get_str_topology(struct cpuInfo* cpu, struct topology* topo, bool dual_socket) {
+  uint32_t size = 3+7+1;
+  char*  string = emalloc(sizeof(char)*size);
+  snprintf(string, size, "%d cores", topo->total_cores);
+
+  return string;
+}
+
+char* get_str_features(struct cpuInfo* cpu) {
+  struct features* feat = cpu->feat;
+  uint32_t max_len = strlen("NEON,SHA1,SHA2,AES,CRC32,SVE,SVE2,") + 1;
+  uint32_t len = 0;
+  char* string = ecalloc(max_len, sizeof(char));
+
+  if(feat->NEON) {
+    strcat(string, "NEON,");
+    len += 5;
+  }
+  if(feat->SVE) {
+    strcat(string, "SVE,");
+    len += 4;
+  }
+  if(feat->SVE2) {
+    strcat(string, "SVE2,");
+    len += 5;
+  }
+  if(feat->SHA1) {
+    strcat(string, "SHA1,");
+    len += 5;
+  }
+  if(feat->SHA2) {
+    strcat(string, "SHA2,");
+    len += 5;
+  }
+  if(feat->AES) {
+    strcat(string, "AES,");
+    len += 4;
+  }
+  if(feat->CRC32) {
+    strcat(string, "CRC32,");
+    len += 6;
+  }
+
+  if(len > 0) {
+    string[len-1] = '\0';
+    return string;
+  }
+  else
+    return NULL;
+}
+
+void print_debug(struct cpuInfo* cpu) {
+  int ncores = get_ncores_from_cpuinfo();
+  bool success = false;
+
+  for(int i=0; i < ncores; i++) {
+    printf("[Core %d] ", i);
+    long freq = get_max_freq_from_file(i);
+    uint32_t midr = get_midr_from_cpuinfo(i, &success);
+    if(!success) {
+      printWarn("Unable to fetch MIDR for core %d. This is probably because the core is offline", i);
+      printf("0x%.8X ", get_midr_from_cpuinfo(0, &success));
+    }
+    else {
+      printf("0x%.8X ", midr);
+    }
+    if(freq == UNKNOWN_DATA) {
+      printWarn("Unable to fetch max frequency for core %d. This is probably because the core is offline", i);
+      printf("%ld MHz\n", get_max_freq_from_file(0));
+    }
+    else {
+      printf("%ld MHz\n", freq);
+    }
+  }
+
+  if (cpu->feat->SVE || cpu->feat->SVE2) {
+    printf("- cntb: %d\n", (int) cpu->feat->cntb);
+  }
+
+  #if defined(__APPLE__) || defined(__MACH__)
+    printf("hw.cpufamily: 0x%.8X\n", get_sys_info_by_name("hw.cpufamily"));
+    printf("hw.cpusubfamily: 0x%.8X\n", get_sys_info_by_name("hw.cpusubfamily"));
+    printf("hw.nperflevels: %d\n", get_sys_info_by_name("hw.nperflevels"));
+    printf("hw.physicalcpu: %d\n", get_sys_info_by_name("hw.physicalcpu"));
+    printf("hw.perflevel0.physicalcpu: %d\n", get_sys_info_by_name("hw.perflevel0.physicalcpu"));
+    printf("hw.perflevel1.physicalcpu: %d\n", get_sys_info_by_name("hw.perflevel1.physicalcpu"));
+  #endif
+}
+
+void free_topo_struct(struct topology* topo) {
+  free(topo);
+}

src/arm/midr.h

@@ -0,0 +1,69 @@
+#ifndef __MIDR__
+#define __MIDR__
+
+#include "../common/cpu.h"
+
+struct cpuInfo* get_cpu_info(void);
+
+uint32_t get_nsockets(struct topology* topo);
+char* get_str_topology(struct cpuInfo* cpu, struct topology* topo, bool dual_socket);
+char* get_str_features(struct cpuInfo* cpu);
+
+void print_debug(struct cpuInfo* cpu);
+void free_topo_struct(struct topology* topo);
+
+// Code taken from cpuinfo (https://github.com/pytorch/cpuinfo/blob/master/src/arm/midr.h)
+#define CPUINFO_ARM_MIDR_IMPLEMENTER_MASK  UINT32_C(0xFF000000)
+#define CPUINFO_ARM_MIDR_VARIANT_MASK      UINT32_C(0x00F00000)
+#define CPUINFO_ARM_MIDR_ARCHITECTURE_MASK UINT32_C(0x000F0000)
+#define CPUINFO_ARM_MIDR_PART_MASK         UINT32_C(0x0000FFF0)
+#define CPUINFO_ARM_MIDR_REVISION_MASK     UINT32_C(0x0000000F)
+
+#define CPUINFO_ARM_MIDR_IMPLEMENTER_OFFSET  24
+#define CPUINFO_ARM_MIDR_VARIANT_OFFSET      20
+#define CPUINFO_ARM_MIDR_ARCHITECTURE_OFFSET 16
+#define CPUINFO_ARM_MIDR_PART_OFFSET          4
+#define CPUINFO_ARM_MIDR_REVISION_OFFSET      0
+
+inline static uint32_t midr_set_implementer(uint32_t midr, uint32_t implementer) {
+        return (midr & ~CPUINFO_ARM_MIDR_IMPLEMENTER_MASK) |
+                ((implementer << CPUINFO_ARM_MIDR_IMPLEMENTER_OFFSET) & CPUINFO_ARM_MIDR_IMPLEMENTER_MASK);
+}
+
+inline static uint32_t midr_set_variant(uint32_t midr, uint32_t variant) {
+        return (midr & ~CPUINFO_ARM_MIDR_VARIANT_MASK) |
+                ((variant << CPUINFO_ARM_MIDR_VARIANT_OFFSET) & CPUINFO_ARM_MIDR_VARIANT_MASK);
+}
+
+inline static uint32_t midr_set_architecture(uint32_t midr, uint32_t architecture) {
+        return (midr & ~CPUINFO_ARM_MIDR_ARCHITECTURE_MASK) |
+                ((architecture << CPUINFO_ARM_MIDR_ARCHITECTURE_OFFSET) & CPUINFO_ARM_MIDR_ARCHITECTURE_MASK);
+}
+
+inline static uint32_t midr_set_part(uint32_t midr, uint32_t part) {
+        return (midr & ~CPUINFO_ARM_MIDR_PART_MASK) |
+                ((part << CPUINFO_ARM_MIDR_PART_OFFSET) & CPUINFO_ARM_MIDR_PART_MASK);
+}
+
+inline static uint32_t midr_set_revision(uint32_t midr, uint32_t revision) {
+        return (midr & ~CPUINFO_ARM_MIDR_REVISION_MASK) |
+                ((revision << CPUINFO_ARM_MIDR_REVISION_OFFSET) & CPUINFO_ARM_MIDR_REVISION_MASK);
+}
+
+inline static uint32_t midr_get_variant(uint32_t midr) {
+	return (midr & CPUINFO_ARM_MIDR_VARIANT_MASK) >> CPUINFO_ARM_MIDR_VARIANT_OFFSET;
+}
+
+inline static uint32_t midr_get_implementer(uint32_t midr) {
+	return (midr & CPUINFO_ARM_MIDR_IMPLEMENTER_MASK) >> CPUINFO_ARM_MIDR_IMPLEMENTER_OFFSET;
+}
+
+inline static uint32_t midr_get_part(uint32_t midr) {
+	return (midr & CPUINFO_ARM_MIDR_PART_MASK) >> CPUINFO_ARM_MIDR_PART_OFFSET;
+}
+
+inline static uint32_t midr_get_revision(uint32_t midr) {
+	return (midr & CPUINFO_ARM_MIDR_REVISION_MASK) >> CPUINFO_ARM_MIDR_REVISION_OFFSET;
+}
+
+#endif

src/arm/soc.h

@@ -0,0 +1,10 @@
+#ifndef __SOC_ARM__
+#define __SOC_ARM__
+
+#include "../common/cpu.h"
+#include "../common/soc.h"
+#include <stdint.h>
+
+struct system_on_chip* get_soc(struct cpuInfo* cpu);
+
+#endif

src/arm/socs.h

@@ -0,0 +1,460 @@
+#ifndef __SOCS__
+#define __SOCS__
+
+#include "soc.h"
+
+// List of supported SOCs
+enum {
+  // Broadcom //
+  SOC_BCM_2835,
+  SOC_BCM_2836,
+  SOC_BCM_2837,
+  SOC_BCM_2837B0,
+  SOC_BCM_21553,
+  SOC_BCM_21553T,
+  SOC_BCM_21663,
+  SOC_BCM_21664,
+  SOC_BCM_28155,
+  SOC_BCM_23550,
+  SOC_BCM_28145,
+  SOC_BCM_2157,
+  SOC_BCM_21654,
+  SOC_BCM_2711,
+  SOC_BCM_2712,
+  // Hisilicon //
+  SOC_HISILICON_3620,
+  SOC_HISILICON_3630,
+  SOC_HISILICON_3650,
+  SOC_HISILICON_3660,
+  SOC_HISILICON_3670,
+  SOC_HISILICON_3680,
+  SOC_HISILICON_3690,
+  SOC_HISILICON_9000S,
+  // Kunpeng //
+  SOC_KUNPENG_920,
+  SOC_KUNPENG_930,
+  // Exynos //
+  SOC_EXYNOS_3475,
+  SOC_EXYNOS_4210,
+  SOC_EXYNOS_4212,
+  SOC_EXYNOS_4412,
+  SOC_EXYNOS_5250,
+  SOC_EXYNOS_5410,
+  SOC_EXYNOS_5420,
+  SOC_EXYNOS_5422,
+  SOC_EXYNOS_5430,
+  SOC_EXYNOS_5433,
+  SOC_EXYNOS_5260,
+  SOC_EXYNOS_7270,
+  SOC_EXYNOS_7420,
+  SOC_EXYNOS_7570,
+  SOC_EXYNOS_7870,
+  SOC_EXYNOS_7872,
+  SOC_EXYNOS_7880,
+  SOC_EXYNOS_7884,
+  SOC_EXYNOS_7885,
+  SOC_EXYNOS_7904,
+  SOC_EXYNOS_8890,
+  SOC_EXYNOS_8895,
+  SOC_EXYNOS_9110,
+  SOC_EXYNOS_9609,
+  SOC_EXYNOS_9610,
+  SOC_EXYNOS_9611,
+  SOC_EXYNOS_9810,
+  SOC_EXYNOS_9820,
+  SOC_EXYNOS_9825,
+  SOC_EXYNOS_1080,
+  SOC_EXYNOS_990,
+  SOC_EXYNOS_980,
+  SOC_EXYNOS_880,
+  // Mediatek //
+  SOC_MTK_MT5327,
+  SOC_MTK_MT5329,
+  SOC_MTK_MT5366,
+  SOC_MTK_MT5389,
+  SOC_MTK_MT5395,
+  SOC_MTK_MT5396,
+  SOC_MTK_MT5398,
+  SOC_MTK_MT5505,
+  SOC_MTK_MT5561,
+  SOC_MTK_MT5580,
+  SOC_MTK_MT5582,
+  SOC_MTK_MT5592,
+  SOC_MTK_MT5595,
+  SOC_MTK_MT5596,
+  SOC_MTK_MT5597,
+  SOC_MTK_MT5889,
+  SOC_MTK_MT5895,
+  SOC_MTK_MT6515,
+  SOC_MTK_MT6516,
+  SOC_MTK_MT6517,
+  SOC_MTK_MT6572,
+  SOC_MTK_MT6572M,
+  SOC_MTK_MT6573,
+  SOC_MTK_MT6575,
+  SOC_MTK_MT6577,
+  SOC_MTK_MT6577T,
+  SOC_MTK_MT6580,
+  SOC_MTK_MT6582,
+  SOC_MTK_MT6582M,
+  SOC_MTK_MT6589,
+  SOC_MTK_MT6589T,
+  SOC_MTK_MT6592,
+  SOC_MTK_MT6595,
+  SOC_MTK_MT6732,
+  SOC_MTK_MT6735,
+  SOC_MTK_MT6735M,
+  SOC_MTK_MT6735P,
+  SOC_MTK_MT6737,
+  SOC_MTK_MT6737M,
+  SOC_MTK_MT6737T,
+  SOC_MTK_MT6739,
+  SOC_MTK_MT6750,
+  SOC_MTK_MT6750S,
+  SOC_MTK_MT6750T,
+  SOC_MTK_MT6752,
+  SOC_MTK_MT6753,
+  SOC_MTK_MT6755M,
+  SOC_MTK_MT6755T,
+  SOC_MTK_MT6757,
+  SOC_MTK_MT6757CD,
+  SOC_MTK_MT6758,
+  SOC_MTK_MT6761,
+  SOC_MTK_MT6761D,
+  SOC_MTK_MT6762,
+  SOC_MTK_MT6762D,
+  SOC_MTK_MT6762G,
+  SOC_MTK_MT6763T,
+  SOC_MTK_MT6763V,
+  SOC_MTK_MT6765,
+  SOC_MTK_MT6765G,
+  SOC_MTK_MT6765H,
+  SOC_MTK_MT6768,
+  SOC_MTK_MT6769H,
+  SOC_MTK_MT6769T,
+  SOC_MTK_MT6769V,
+  SOC_MTK_MT6769Z,
+  SOC_MTK_MT6771,
+  SOC_MTK_MT6779V_CU,
+  SOC_MTK_MT6779V_CV,
+  SOC_MTK_MT6785V_CC,
+  SOC_MTK_MT6785V_CD,
+  SOC_MTK_MT6789,
+  SOC_MTK_MT6795,
+  SOC_MTK_MT6797,
+  SOC_MTK_MT6797T,
+  SOC_MTK_MT6797X,
+  SOC_MTK_MT6799,
+  SOC_MTK_MT6833,
+  SOC_MTK_MT6850,
+  SOC_MTK_MT6853,
+  SOC_MTK_MT6853V,
+  SOC_MTK_MT6873,
+  SOC_MTK_MT6875,
+  SOC_MTK_MT6879,
+  SOC_MTK_MT6883Z,
+  SOC_MTK_MT6885Z,
+  SOC_MTK_MT6889,
+  SOC_MTK_MT6889Z,
+  SOC_MTK_MT6891,
+  SOC_MTK_MT6893,
+  SOC_MTK_MT6893Z,
+  SOC_MTK_MT8121,
+  SOC_MTK_MT8125,
+  SOC_MTK_MT8127,
+  SOC_MTK_MT8135,
+  SOC_MTK_MT8163A,
+  SOC_MTK_MT8163B,
+  SOC_MTK_MT8167B,
+  SOC_MTK_MT8173,
+  SOC_MTK_MT8176,
+  SOC_MTK_MT8321,
+  SOC_MTK_MT8382,
+  SOC_MTK_MT8581,
+  SOC_MTK_MT8735,
+  SOC_MTK_MT8765B,
+  SOC_MTK_MT8781V,
+  SOC_MTK_MT8783,
+  SOC_MTK_MT9602,
+  SOC_MTK_MT9612,
+  SOC_MTK_MT9613,
+  SOC_MTK_MT9615,
+  SOC_MTK_MT9618,
+  SOC_MTK_MT9632,
+  SOC_MTK_MT9638,
+  SOC_MTK_MT9652,
+  SOC_MTK_MT9653,
+  SOC_MTK_MT9675,
+  SOC_MTK_MT9685,
+  SOC_MTK_MT9686,
+  SOC_MTK_MT9689,
+  SOC_MTK_MT9902,
+  SOC_MTK_MT9950,
+  SOC_MTK_MT9972,
+  SOC_MTK_MT9982,
+  SOC_MTK_MT6983Z,
+  SOC_MTK_MT8798ZC,
+  SOC_MTK_MT6983W,
+  SOC_MTK_MT8798ZT,
+  SOC_MTK_MT6985W,
+  SOC_MTK_MT6985,
+  SOC_MTK_MT6989,
+  SOC_MTK_MT8796,
+  SOC_MTK_MT6877VZ,
+  SOC_MTK_MT6877T,
+  SOC_MTK_MT6855,
+  SOC_MTK_MT6853VT,
+  SOC_MTK_MT6853T,
+  SOC_MTK_MT6833P,
+  SOC_MTK_MT6833GP,
+  SOC_MTK_MT6833V,
+  // Snapdragon //
+  SOC_SNAPD_QSD8650,
+  SOC_SNAPD_QSD8250,
+  SOC_SNAPD_MSM7627,
+  SOC_SNAPD_MSM7227,
+  SOC_SNAPD_MSM7627A,
+  SOC_SNAPD_MSM7227A,
+  SOC_SNAPD_MSM7625,
+  SOC_SNAPD_MSM7225,
+  SOC_SNAPD_MSM7625A,
+  SOC_SNAPD_MSM7225A,
+  SOC_SNAPD_MSM8655,
+  SOC_SNAPD_MSM8255,
+  SOC_SNAPD_APQ8055,
+  SOC_SNAPD_MSM7630,
+  SOC_SNAPD_MSM7230,
+  SOC_SNAPD_MSM8660,
+  SOC_SNAPD_MSM8260,
+  SOC_SNAPD_APQ8060,
+  SOC_SNAPD_MSM8225,
+  SOC_SNAPD_MSM8625,
+  SOC_SNAPD_APQ8060A,
+  SOC_SNAPD_MSM8960,
+  SOC_SNAPD_MSM8260A,
+  SOC_SNAPD_MSM8627,
+  SOC_SNAPD_MSM8227,
+  SOC_SNAPD_APQ8064,
+  SOC_SNAPD_MSM8960T,
+  SOC_SNAPD_MSM8110,
+  SOC_SNAPD_MSM8210,
+  SOC_SNAPD_MSM8610,
+  SOC_SNAPD_MSM8112,
+  SOC_SNAPD_MSM8212,
+  SOC_SNAPD_MSM8612,
+  SOC_SNAPD_MSM8225Q,
+  SOC_SNAPD_MSM8625Q,
+  SOC_SNAPD_MSM8208,
+  SOC_SNAPD_MSM8905,
+  SOC_SNAPD_MSM8909,
+  SOC_SNAPD_QM215,
+  SOC_SNAPD_APQ8028,
+  SOC_SNAPD_MSM8228,
+  SOC_SNAPD_MSM8628,
+  SOC_SNAPD_MSM8928,
+  SOC_SNAPD_MSM8926,
+  SOC_SNAPD_APQ8030AB,
+  SOC_SNAPD_MSM8226,
+  SOC_SNAPD_MSM8230AB,
+  SOC_SNAPD_MSM8626,
+  SOC_SNAPD_MSM8630,
+  SOC_SNAPD_MSM8630AB,
+  SOC_SNAPD_MSM8930,
+  SOC_SNAPD_MSM8930AB,
+  SOC_SNAPD_MSM8916,
+  SOC_SNAPD_MSM8929,
+  SOC_SNAPD_MSM8917,
+  SOC_SNAPD_MSM8920,
+  SOC_SNAPD_SDM429,
+  SOC_SNAPD_MSM8937,
+  SOC_SNAPD_MSM8940,
+  SOC_SNAPD_SDM439,
+  SOC_SNAPD_SDM450,
+  SOC_SNAPD_SM4250_AA,
+  SOC_SNAPD_APQ8064T,
+  SOC_SNAPD_APQ8064M,
+  SOC_SNAPD_MSM8936,
+  SOC_SNAPD_MSM8939,
+  SOC_SNAPD_MSM8952,
+  SOC_SNAPD_MSM8953,
+  SOC_SNAPD_MSM8953_PRO,
+  SOC_SNAPD_SDM630,
+  SOC_SNAPD_SDM632,
+  SOC_SNAPD_SDM636,
+  SOC_SNAPD_MSM8956,
+  SOC_SNAPD_MSM8976,
+  SOC_SNAPD_MSM8976_PRO,
+  SOC_SNAPD_SDM660,
+  SOC_SNAPD_SM6115,
+  SOC_SNAPD_SM6125,
+  SOC_SNAPD_SM6375_AC,
+  SOC_SNAPD_SM6450,
+  SOC_SNAPD_SDM670,
+  SOC_SNAPD_SM6150,
+  SOC_SNAPD_SM6350,
+  SOC_SNAPD_SDM710,
+  SOC_SNAPD_SDM712,
+  SOC_SNAPD_SM4375,
+  SOC_SNAPD_SM4450,
+  SOC_SNAPD_SM4635,
+  SOC_SNAPD_SM7125,
+  SOC_SNAPD_SM7150_AA,
+  SOC_SNAPD_SM7150_AB,
+  SOC_SNAPD_SM7150_AC,
+  SOC_SNAPD_SM7225,
+  SOC_SNAPD_SM7250_AA,
+  SOC_SNAPD_SM7250_AB,
+  SOC_SNAPD_SM7250_AC,
+  SOC_SNAPD_SM7435_AB,
+  SOC_SNAPD_SM7450,
+  SOC_SNAPD_SM7475,
+  SOC_SNAPD_SM7550_AB,
+  SOC_SNAPD_SM7675_AB,
+  SOC_SNAPD_MSM8974AA,
+  SOC_SNAPD_MSM8974AB,
+  SOC_SNAPD_MSM8974AC,
+  SOC_SNAPD_MSM8974PRO_AB,
+  SOC_SNAPD_MSM8974PRO_AC,
+  SOC_SNAPD_APQ8084,
+  SOC_SNAPD_MSM8992,
+  SOC_SNAPD_MSM8994,
+  SOC_SNAPD_MSM8996,
+  SOC_SNAPD_MSM8996_PRO_A,
+  SOC_SNAPD_MSM8998,
+  SOC_SNAPD_APQ8098,
+  SOC_SNAPD_SDM845,
+  SOC_SNAPD_SDM850,
+  SOC_SNAPD_SM8150,
+  SOC_SNAPD_SM8150_AC,
+  SOC_SNAPD_SM8250,
+  SOC_SNAPD_SM8250_AB,
+  SOC_SNAPD_SM8350,
+  SOC_SNAPD_SM8450,
+  SOC_SNAPD_SM8475,
+  SOC_SNAPD_SM8550_AB,
+  SOC_SNAPD_SM8635,
+  SOC_SNAPD_SM8650_AB,
+  SOC_SNAPD_SC8280XP,
+  // APPLE
+  SOC_APPLE_M1,
+  SOC_APPLE_M1_PRO,
+  SOC_APPLE_M1_MAX,
+  SOC_APPLE_M1_ULTRA,
+  SOC_APPLE_M2,
+  SOC_APPLE_M2_PRO,
+  SOC_APPLE_M2_MAX,
+  SOC_APPLE_M2_ULTRA,
+  SOC_APPLE_M3,
+  SOC_APPLE_M3_PRO,
+  SOC_APPLE_M3_MAX,
+  // ALLWINNER
+  SOC_ALLWINNER_A10,
+  SOC_ALLWINNER_A13,
+  SOC_ALLWINNER_A10S,
+  SOC_ALLWINNER_A20,
+  SOC_ALLWINNER_A23,
+  SOC_ALLWINNER_A31,
+  SOC_ALLWINNER_A31S,
+  SOC_ALLWINNER_A33,
+  SOC_ALLWINNER_A40,
+  SOC_ALLWINNER_A50,
+  SOC_ALLWINNER_A64,
+  SOC_ALLWINNER_A80,
+  SOC_ALLWINNER_A83T,
+  SOC_ALLWINNER_V3S,
+  SOC_ALLWINNER_HZP,
+  SOC_ALLWINNER_H2PLUS,
+  SOC_ALLWINNER_S3,
+  SOC_ALLWINNER_H3,
+  SOC_ALLWINNER_H8,
+  SOC_ALLWINNER_H5,
+  SOC_ALLWINNER_H6,
+  SOC_ALLWINNER_H64,
+  SOC_ALLWINNER_H616,
+  SOC_ALLWINNER_H618,
+  SOC_ALLWINNER_R8,
+  SOC_ALLWINNER_R16,
+  SOC_ALLWINNER_R40,
+  SOC_ALLWINNER_R58,
+  SOC_ALLWINNER_R328,
+  // ROCKCHIP
+  SOC_ROCKCHIP_3288,
+  SOC_ROCKCHIP_3229,
+  SOC_ROCKCHIP_3308,
+  SOC_ROCKCHIP_3318,
+  SOC_ROCKCHIP_3326,
+  SOC_ROCKCHIP_3328,
+  SOC_ROCKCHIP_3368,
+  SOC_ROCKCHIP_3399,
+  SOC_ROCKCHIP_3528,
+  SOC_ROCKCHIP_3562,
+  SOC_ROCKCHIP_3566,
+  SOC_ROCKCHIP_3568,
+  SOC_ROCKCHIP_3588,
+  // GOOGLE
+  SOC_GOOGLE_TENSOR,
+  SOC_GOOGLE_TENSOR_G2,
+  SOC_GOOGLE_TENSOR_G3,
+  // NVIDIA,
+  SOC_TEGRA_2,
+  SOC_TEGRA_3,
+  SOC_TEGRA_4,
+  SOC_TEGRA_K1,
+  SOC_TEGRA_K2,
+  SOC_TEGRA_X1,
+  SOC_TEGRA_X2,
+  SOC_TEGRA_XAVIER,
+  SOC_TEGRA_ORIN,
+  // ALTRA
+  SOC_AMPERE_ALTRA,
+  // NXP
+  SOC_NXP_IMX8QM,
+  SOC_NXP_IMX8QP,
+  SOC_NXP_IMX8MP,
+  SOC_NXP_IMX8MN,
+  SOC_NXP_IMX8MM,
+  SOC_NXP_IMX8DXP,
+  SOC_NXP_IMX8QXP,
+  SOC_NXP_IMX93,
+  // AMLOGIC
+  SOC_AMLOGIC_A311D,
+  SOC_AMLOGIC_A311D2,
+  SOC_AMLOGIC_S905W,
+  SOC_AMLOGIC_S905D,
+  SOC_AMLOGIC_S905X,
+  SOC_AMLOGIC_S805X,
+  // MARVELL
+  SOC_MARVELL_A3700,
+  SOC_MARVELL_A3710,
+  SOC_MARVELL_A3720,
+  SOC_MARVELL_A7200,
+  SOC_MARVELL_A7400,
+  SOC_MARVELL_A8020,
+  SOC_MARVELL_A8040,
+  SOC_MARVELL_CN9130,
+  SOC_MARVELL_CN9131,
+  SOC_MARVELL_CN9132,
+  // UNKNOWN
+  SOC_MODEL_UNKNOWN
+};
+
+inline static VENDOR get_soc_vendor_from_soc(SOC soc) {
+  if(soc >= SOC_BCM_2835 && soc <= SOC_BCM_2712) return SOC_VENDOR_BROADCOM;
+  else if(soc >= SOC_HISILICON_3620 && soc <= SOC_HISILICON_9000S) return SOC_VENDOR_KIRIN;
+  else if(soc >= SOC_KUNPENG_920 && soc <= SOC_KUNPENG_930) return SOC_VENDOR_KUNPENG;
+  else if(soc >= SOC_EXYNOS_3475 && soc <= SOC_EXYNOS_880) return SOC_VENDOR_EXYNOS;
+  else if(soc >= SOC_MTK_MT5327 && soc <= SOC_MTK_MT6833V) return SOC_VENDOR_MEDIATEK;
+  else if(soc >= SOC_SNAPD_QSD8650 && soc <= SOC_SNAPD_SC8280XP) return SOC_VENDOR_SNAPDRAGON;
+  else if(soc >= SOC_APPLE_M1 && soc <= SOC_APPLE_M3_MAX) return SOC_VENDOR_APPLE;
+  else if(soc >= SOC_ALLWINNER_A10 && soc <= SOC_ALLWINNER_R328) return SOC_VENDOR_ALLWINNER;
+  else if(soc >= SOC_ROCKCHIP_3288 && soc <= SOC_ROCKCHIP_3588) return SOC_VENDOR_ROCKCHIP;
+  else if(soc >= SOC_GOOGLE_TENSOR && soc <= SOC_GOOGLE_TENSOR_G3) return SOC_VENDOR_GOOGLE;
+  else if(soc >= SOC_TEGRA_2 && soc <= SOC_TEGRA_ORIN) return SOC_VENDOR_NVIDIA;
+  else if(soc >= SOC_AMPERE_ALTRA && soc <= SOC_AMPERE_ALTRA) return SOC_VENDOR_AMPERE;
+  else if(soc >= SOC_NXP_IMX8QM && soc <= SOC_NXP_IMX93) return SOC_VENDOR_NXP;
+  else if(soc >= SOC_AMLOGIC_A311D && soc <= SOC_AMLOGIC_S805X) return SOC_VENDOR_AMLOGIC;
+  else if(soc >= SOC_MARVELL_A3700 && soc <= SOC_MARVELL_CN9132) return SOC_VENDOR_MARVELL;
+  return SOC_VENDOR_UNKNOWN;
+}
+
+#endif

src/arm/socs_generation.sh

@@ -0,0 +1,23 @@
+#!/bin/bash -u
+
+SOC_LIST="$(grep SOC_EQ soc.c | grep -v '//SOC_EQ' | grep -v 'define' | cut -d',' -f2 | sed 's/"//')"
+
+IFS=$'"'
+
+for soc in $SOC_LIST
+do
+  # CLEAN
+  soc=$(echo $soc | tr -d '\n')
+  soc="${soc:1}"
+  
+  # REPLACE
+  soc=$(echo $soc | sed "s/BCM/BCM_/g")
+  soc=$(echo $soc | sed "s/universal/EXYNOS_/g")
+  soc=$(echo $soc | sed "s/Hi/HISILICON_/g")
+  soc=$(echo $soc | sed "s/^MSM/SNAPD_MSM/g" | sed "s/SDM/SNAPD_SDM/g" | sed "s/APQ/SNAPD_APQ/g" | sed "s/^SM/SNAPD_SM/g" | sed "s/QM/SNAPD_QM/g" | sed "s/QSD/SNAPD_QSD/g")
+  soc=$(echo $soc | sed "s/MT/MTK_MT/g")
+  soc=$(echo $soc | sed "s/-/_/g" | sed "s/ /_/g")
+  echo '  SOC_'"$soc"','
+done
+
+unset IFS

src/arm/sve.c

@@ -0,0 +1,15 @@
+#include <stdint.h>
+#include "../common/global.h"
+
+// https://learn.arm.com/learning-paths/servers-and-cloud-computing/sve/sve_basics/#:~:text=Using%20a%20text%20editor%20of%20your%20choice%2C%20copy,svcntb%28%29%29%3B%20%7D%20This%20program%20prints%20the%20vector%20length
+uint64_t sve_cntb(void) {
+  #ifdef __ARM_FEATURE_SVE
+    uint64_t x0 = 0;
+    __asm volatile("cntb %0"
+         : "=r"(x0));
+    return x0;
+  #else
+    printWarn("sve_cntb: Hardware supports SVE, but it was not enabled by the compiler");
+    return 0;
+  #endif
+}

src/arm/sve.h

@@ -0,0 +1,6 @@
+#ifndef __SVE_DETECTION__
+#define __SVE_DETECTION__
+
+uint64_t sve_cntb(void);
+
+#endif

src/arm/uarch.c

@@ -0,0 +1,403 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <inttypes.h>
+
+#include "uarch.h"
+#include "../common/global.h"
+
+// Data not available
+#define NA                   -1
+
+typedef uint32_t ISA;
+
+struct uarch {
+  MICROARCH uarch;
+  ISA isa;
+  char* uarch_str;
+  char* isa_str;
+  // int32_t process; process depends on SoC
+};
+
+enum {
+  ISA_ARMv6,
+  ISA_ARMv6_T2,
+  ISA_ARMv6_KZ,
+  ISA_ARMv6_K,
+  ISA_ARMv7_A,
+  ISA_ARMv8_A,
+  ISA_ARMv8_A_AArch32,
+  ISA_ARMv8_1_A,
+  ISA_ARMv8_2_A,
+  ISA_ARMv8_3_A,
+  ISA_ARMv8_4_A,
+  ISA_ARMv8_5_A,
+  ISA_ARMv8_6_A,
+  ISA_ARMv9_A,
+  ISA_ARMv9_2_A
+};
+
+static const ISA isas_uarch[] = {
+  [UARCH_ARM1136]      = ISA_ARMv6,
+  [UARCH_ARM1156]      = ISA_ARMv6_T2,
+  [UARCH_ARM1176]      = ISA_ARMv6_KZ,
+  [UARCH_ARM11MPCORE]  = ISA_ARMv6_K,
+  [UARCH_CORTEX_A5]    = ISA_ARMv7_A,
+  [UARCH_CORTEX_A7]    = ISA_ARMv7_A,
+  [UARCH_CORTEX_A8]    = ISA_ARMv7_A,
+  [UARCH_CORTEX_A9]    = ISA_ARMv7_A,
+  [UARCH_CORTEX_A12]   = ISA_ARMv7_A,
+  [UARCH_CORTEX_A15]   = ISA_ARMv7_A,
+  [UARCH_CORTEX_A17]   = ISA_ARMv7_A,
+  [UARCH_CORTEX_A32]   = ISA_ARMv8_A_AArch32,
+  [UARCH_CORTEX_A35]   = ISA_ARMv8_A,
+  [UARCH_CORTEX_A53]   = ISA_ARMv8_A,
+  [UARCH_CORTEX_A55r0] = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A55]   = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A57]   = ISA_ARMv8_A,
+  [UARCH_CORTEX_A65]   = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A72]   = ISA_ARMv8_A,
+  [UARCH_CORTEX_A73]   = ISA_ARMv8_A,
+  [UARCH_CORTEX_A75]   = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A76]   = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A77]   = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A78]   = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A78C]  = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A78AE] = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_A510]   = ISA_ARMv9_A,
+  [UARCH_CORTEX_A520]  = ISA_ARMv9_2_A,
+  [UARCH_CORTEX_A710]   = ISA_ARMv9_A,
+  [UARCH_CORTEX_A715]  = ISA_ARMv9_A,
+  [UARCH_CORTEX_A720]  = ISA_ARMv9_2_A,
+  [UARCH_CORTEX_A725]  = ISA_ARMv9_2_A,
+  [UARCH_CORTEX_X1]    = ISA_ARMv8_2_A,
+  [UARCH_CORTEX_X1C]   = ISA_ARMv8_2_A, // Assuming same as X1
+  [UARCH_CORTEX_X2]    = ISA_ARMv9_A,
+  [UARCH_CORTEX_X3]    = ISA_ARMv9_A,
+  [UARCH_CORTEX_X4]    = ISA_ARMv9_2_A,
+  [UARCH_CORTEX_X925]  = ISA_ARMv9_2_A,
+  [UARCH_NEOVERSE_N1]  = ISA_ARMv8_2_A,
+  [UARCH_NEOVERSE_N2]  = ISA_ARMv9_A,
+  [UARCH_NEOVERSE_E1]  = ISA_ARMv8_2_A,
+  [UARCH_NEOVERSE_V1]  = ISA_ARMv8_4_A,
+  [UARCH_NEOVERSE_V2]  = ISA_ARMv9_A,
+  [UARCH_NEOVERSE_V3]  = ISA_ARMv9_2_A,
+  [UARCH_BRAHMA_B15]   = ISA_ARMv7_A,   // Same as Cortex-A15
+  [UARCH_BRAHMA_B53]   = ISA_ARMv8_A,   // Same as Cortex-A53
+  [UARCH_THUNDERX]     = ISA_ARMv8_A,
+  [UARCH_THUNDERX2]    = ISA_ARMv8_1_A,
+  [UARCH_TAISHAN_V110] = ISA_ARMv8_2_A,
+  [UARCH_TAISHAN_V120] = ISA_ARMv8_2_A, // Not confirmed
+  [UARCH_TAISHAN_V200] = ISA_ARMv8_2_A, // Not confirmed
+  [UARCH_DENVER]       = ISA_ARMv8_A,
+  [UARCH_DENVER2]      = ISA_ARMv8_A,
+  [UARCH_CARMEL]       = ISA_ARMv8_A,
+  [UARCH_XGENE]        = ISA_ARMv8_A, // https://en.wikichip.org/wiki/apm/x-gene
+  [UARCH_SCORPION]     = ISA_ARMv7_A, // https://www.geektopia.es/es/product/qualcomm/snapdragon-s3-apq8060/
+  [UARCH_KRAIT]        = ISA_ARMv7_A,
+  [UARCH_KYRO]         = ISA_ARMv8_A,
+  [UARCH_FALKOR]       = ISA_ARMv8_A,
+  [UARCH_SAPHIRA]      = ISA_ARMv8_3_A,
+  [UARCH_EXYNOS_M1]    = ISA_ARMv8_A,
+  [UARCH_EXYNOS_M2]    = ISA_ARMv8_A,
+  [UARCH_EXYNOS_M3]    = ISA_ARMv8_A,
+  [UARCH_EXYNOS_M4]    = ISA_ARMv8_2_A,
+  [UARCH_EXYNOS_M5]    = ISA_ARMv8_2_A,
+  [UARCH_ICESTORM]     = ISA_ARMv8_5_A, // https://github.com/llvm/llvm-project/blob/main/llvm/include/llvm/Support/AArch64TargetParser.def
+  [UARCH_FIRESTORM]    = ISA_ARMv8_5_A,
+  [UARCH_BLIZZARD]     = ISA_ARMv8_6_A, // https://github.com/llvm/llvm-project/blob/main/llvm/unittests/TargetParser/TargetParserTest.cpp
+  [UARCH_AVALANCHE]    = ISA_ARMv8_6_A, // https://github.com/llvm/llvm-project/blob/main/llvm/unittests/TargetParser/TargetParserTest.cpp
+  [UARCH_SAWTOOTH]     = ISA_ARMv8_6_A, // https://github.com/llvm/llvm-project/blob/main/llvm/unittests/TargetParser/TargetParserTest.cpp
+  [UARCH_EVEREST]      = ISA_ARMv8_6_A, // https://github.com/llvm/llvm-project/blob/main/llvm/unittests/TargetParser/TargetParserTest.cpp
+  [UARCH_PJ4]          = ISA_ARMv7_A,
+  [UARCH_XIAOMI]       = ISA_ARMv8_A,
+};
+
+static char* isas_string[] = {
+  [ISA_ARMv6]  = "ARMv6",
+  [ISA_ARMv6_T2] = "ARMv6T2",
+  [ISA_ARMv6_KZ] = "ARMv6KZ",
+  [ISA_ARMv6_K] = "ARMv6K",
+  [ISA_ARMv7_A] = "ARMv7",
+  [ISA_ARMv8_A] = "ARMv8",
+  [ISA_ARMv8_A_AArch32] = "ARMv8 AArch32",
+  [ISA_ARMv8_1_A] = "ARMv8.1",
+  [ISA_ARMv8_2_A] = "ARMv8.2",
+  [ISA_ARMv8_3_A] = "ARMv8.3",
+  [ISA_ARMv8_4_A] = "ARMv8.4",
+  [ISA_ARMv8_5_A] = "ARMv8.5",
+  [ISA_ARMv8_6_A] = "ARMv8.6",
+  [ISA_ARMv9_A] = "ARMv9",
+  [ISA_ARMv9_2_A] = "ARMv9.2",
+};
+
+#define UARCH_START if (false) {}
+#define CHECK_UARCH(arch, cpu, im_, p_, v_, r_, str, uarch, vendor) \
+   else if (im_ == im && p_ == p && (v_ == NA || v_ == v) && (r_ == NA || r_ == r)) fill_uarch(arch, cpu, str, uarch, vendor);
+#define UARCH_END else { printBugCheckRelease("Unknown microarchitecture detected: IM=0x%X P=0x%X V=0x%X R=0x%X", im, p, v, r); \
+fill_uarch(arch, cpu, "Unknown", UARCH_UNKNOWN, CPU_VENDOR_UNKNOWN); }
+
+void fill_uarch(struct uarch* arch, struct cpuInfo* cpu, char* str, MICROARCH u, VENDOR vendor) {
+  arch->uarch = u;
+  arch->isa = isas_uarch[arch->uarch];
+  cpu->cpu_vendor = vendor;
+
+  arch->uarch_str = emalloc(sizeof(char) * (strlen(str)+1));
+  strcpy(arch->uarch_str, str);
+
+  arch->isa_str = emalloc(sizeof(char) * (strlen(isas_string[arch->isa])+1));
+  strcpy(arch->isa_str, isas_string[arch->isa]);
+}
+
+/*
+ * Codes are based on pytorch/cpuinfo, more precisely:
+ * - https://github.com/pytorch/cpuinfo/blob/main/src/arm/uarch.c
+ * Other sources:
+ * - https://elixir.bootlin.com/linux/latest/source/arch/arm64/include/asm/cputype.h
+ * - https://elixir.bootlin.com/linux/latest/source/arch/arm/include/asm/cputype.h
+ * - https://github.com/AsahiLinux/m1n1/blob/main/src/chickens.c
+ */
+struct uarch* get_uarch_from_midr(uint32_t midr, struct cpuInfo* cpu) {
+  struct uarch* arch = emalloc(sizeof(struct uarch));
+  uint32_t im = midr_get_implementer(midr);
+  uint32_t p = midr_get_part(midr);
+  uint32_t v = midr_get_variant(midr);
+  uint32_t r = midr_get_revision(midr);
+
+  // ----------------------------------------------------------------------- //
+  // IM: Implementer                                                         //
+  // P:  Part                                                                //
+  // V:  Variant                                                             //
+  // R:  Revision                                                            //
+  // ----------------------------------------------------------------------- //
+  //                     IM   P      V   R                                   //
+  UARCH_START
+  CHECK_UARCH(arch, cpu, 'A', 0xB36, NA, NA, "ARM1136",               UARCH_ARM1136,      CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xB56, NA, NA, "ARM1156",               UARCH_ARM1156,      CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xB76, NA, NA, "ARM1176",               UARCH_ARM1176,      CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xB02, NA, NA, "ARM11 MPCore",          UARCH_ARM11MPCORE,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC05, NA, NA, "Cortex-A5",             UARCH_CORTEX_A5,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC07, NA, NA, "Cortex-A7",             UARCH_CORTEX_A7,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC08, NA, NA, "Cortex-A8",             UARCH_CORTEX_A8,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC09, NA, NA, "Cortex-A9",             UARCH_CORTEX_A9,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC0C, NA, NA, "Cortex-A12",            UARCH_CORTEX_A12,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC0E, NA, NA, "Cortex-A17",            UARCH_CORTEX_A17,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC0D, NA, NA, "Cortex-A12",            UARCH_CORTEX_A12,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xC0F, NA, NA, "Cortex-A15",            UARCH_CORTEX_A15,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD01, NA, NA, "Cortex-A32",            UARCH_CORTEX_A32,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD03, NA, NA, "Cortex-A53",            UARCH_CORTEX_A53,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD04, NA, NA, "Cortex-A35",            UARCH_CORTEX_A35,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD05, NA,  0, "Cortex-A55",            UARCH_CORTEX_A55r0, CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD05, NA, NA, "Cortex-A55",            UARCH_CORTEX_A55,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD06, NA, NA, "Cortex-A65",            UARCH_CORTEX_A65,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD07, NA, NA, "Cortex-A57",            UARCH_CORTEX_A57,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD08, NA, NA, "Cortex-A72",            UARCH_CORTEX_A72,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD09, NA, NA, "Cortex-A73",            UARCH_CORTEX_A73,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD0A, NA, NA, "Cortex-A75",            UARCH_CORTEX_A75,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD0B, NA, NA, "Cortex-A76",            UARCH_CORTEX_A76,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD0C, NA, NA, "Neoverse N1",           UARCH_NEOVERSE_N1,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD0D, NA, NA, "Cortex-A77",            UARCH_CORTEX_A77,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD0E, NA, NA, "Cortex-A76",            UARCH_CORTEX_A76,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD40, NA, NA, "Neoverse V1",           UARCH_NEOVERSE_V1,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD41, NA, NA, "Cortex-A78",            UARCH_CORTEX_A78,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD42, NA, NA, "Cortex-A78AE",          UARCH_CORTEX_A78AE, CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD44, NA, NA, "Cortex-X1",             UARCH_CORTEX_X1,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD46, NA, NA, "Cortex‑A510",           UARCH_CORTEX_A510,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD47, NA, NA, "Cortex‑A710",           UARCH_CORTEX_A710,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD48, NA, NA, "Cortex-X2",             UARCH_CORTEX_X2,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD49, NA, NA, "Neoverse N2",           UARCH_NEOVERSE_N2,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD4A, NA, NA, "Neoverse E1",           UARCH_NEOVERSE_E1,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD4B, NA, NA, "Cortex-A78C",           UARCH_CORTEX_A78C,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD4C, NA, NA, "Cortex-X1C",            UARCH_CORTEX_X1C,   CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD4D, NA, NA, "Cortex-A715",           UARCH_CORTEX_A715,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD4E, NA, NA, "Cortex-X3",             UARCH_CORTEX_X3,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD4F, NA, NA, "Neoverse V2",           UARCH_NEOVERSE_V2,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD80, NA, NA, "Cortex-A520",           UARCH_CORTEX_A520,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD81, NA, NA, "Cortex-A720",           UARCH_CORTEX_A720,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD82, NA, NA, "Cortex-X4",             UARCH_CORTEX_X4,    CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD84, NA, NA, "Neoverse V3",           UARCH_NEOVERSE_V3,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD85, NA, NA, "Cortex-X925",           UARCH_CORTEX_X925,  CPU_VENDOR_ARM)
+  CHECK_UARCH(arch, cpu, 'A', 0xD87, NA, NA, "Cortex-A725",           UARCH_CORTEX_A725,  CPU_VENDOR_ARM)
+
+  CHECK_UARCH(arch, cpu, 'B', 0x00F, NA, NA, "Brahma B15",            UARCH_BRAHMA_B15,   CPU_VENDOR_BROADCOM)
+  CHECK_UARCH(arch, cpu, 'B', 0x100, NA, NA, "Brahma B53",            UARCH_BRAHMA_B53,   CPU_VENDOR_BROADCOM)
+  CHECK_UARCH(arch, cpu, 'B', 0x516, NA, NA, "ThunderX2",             UARCH_THUNDERX2,    CPU_VENDOR_CAVIUM)
+
+  CHECK_UARCH(arch, cpu, 'C', 0x0A0, NA, NA, "ThunderX",              UARCH_THUNDERX,     CPU_VENDOR_CAVIUM)
+  CHECK_UARCH(arch, cpu, 'C', 0x0A1, NA, NA, "ThunderX 88XX",         UARCH_THUNDERX,     CPU_VENDOR_CAVIUM)
+  CHECK_UARCH(arch, cpu, 'C', 0x0A2, NA, NA, "ThunderX 81XX",         UARCH_THUNDERX,     CPU_VENDOR_CAVIUM)
+  CHECK_UARCH(arch, cpu, 'C', 0x0A3, NA, NA, "ThunderX 81XX",         UARCH_THUNDERX,     CPU_VENDOR_CAVIUM)
+  CHECK_UARCH(arch, cpu, 'C', 0x0AF, NA, NA, "ThunderX2 99XX",        UARCH_THUNDERX2,    CPU_VENDOR_CAVIUM)
+
+  CHECK_UARCH(arch, cpu, 'H', 0xD01, NA, NA, "TaiShan v110",          UARCH_TAISHAN_V110, CPU_VENDOR_HUAWEI) // Kunpeng 920 series
+  CHECK_UARCH(arch, cpu, 'H', 0xD02,  2,  2, "TaiShan v120",          UARCH_TAISHAN_V120, CPU_VENDOR_HUAWEI) // Kiring 9000S Big cores (https://github.com/Dr-Noob/cpufetch/issues/259)
+  CHECK_UARCH(arch, cpu, 'H', 0xD02, NA, NA, "TaiShan v200",          UARCH_TAISHAN_V200, CPU_VENDOR_HUAWEI) // Kunpeng 930 series (found in openeuler: https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XQCV7NX2UKRIUWUFKRF4PO3QENCOUFR3)
+  CHECK_UARCH(arch, cpu, 'H', 0xD40, NA, NA, "Cortex-A76",            UARCH_CORTEX_A76,   CPU_VENDOR_ARM)    // Kirin 980 Big/Medium cores -> Cortex-A76
+  CHECK_UARCH(arch, cpu, 'H', 0xD42, NA, NA, "TaiShan v120",          UARCH_TAISHAN_V120, CPU_VENDOR_HUAWEI) // Kiring 9000S Small Cores (https://github.com/Dr-Noob/cpufetch/issues/259)
+
+  CHECK_UARCH(arch, cpu, 'N', 0x000, NA, NA, "Denver",                UARCH_DENVER,       CPU_VENDOR_NVIDIA)
+  CHECK_UARCH(arch, cpu, 'N', 0x003, NA, NA, "Denver2",               UARCH_DENVER2,      CPU_VENDOR_NVIDIA)
+  CHECK_UARCH(arch, cpu, 'N', 0x004, NA, NA, "Carmel",                UARCH_CARMEL,       CPU_VENDOR_NVIDIA)
+
+  CHECK_UARCH(arch, cpu, 'P', 0x000, NA, NA, "Xgene",                 UARCH_XGENE,        CPU_VENDOR_APM)
+
+  CHECK_UARCH(arch, cpu, 'Q', 0x00F, NA, NA, "Scorpion",              UARCH_SCORPION,     CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x02D, NA, NA, "Scorpion",              UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x04D,  1,  0, "Krait 200",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x04D,  1,  4, "Krait 200",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x04D,  2,  0, "Krait 300",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x06F,  0,  1, "Krait 200",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x06F,  0,  2, "Krait 200",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x06F,  1,  0, "Krait 300",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x06F,  2,  0, "Krait 400",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM) // Snapdragon 800 MSMxxxx
+  CHECK_UARCH(arch, cpu, 'Q', 0x06F,  2,  1, "Krait 400",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM) // Snapdragon 801 MSMxxxxPRO
+  CHECK_UARCH(arch, cpu, 'Q', 0x06F,  3,  1, "Krait 450",             UARCH_KRAIT,        CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0x201, NA, NA, "Kryo Silver",           UARCH_KYRO,         CPU_VENDOR_QUALCOMM) // Qualcomm Snapdragon 821: Low-power Kryo "Silver"
+  CHECK_UARCH(arch, cpu, 'Q', 0x205, NA, NA, "Kryo Gold",             UARCH_KYRO,         CPU_VENDOR_QUALCOMM) // Qualcomm Snapdragon 820 & 821: High-performance Kryo "Gold"
+  CHECK_UARCH(arch, cpu, 'Q', 0x211, NA, NA, "Kryo Silver",           UARCH_KYRO,         CPU_VENDOR_QUALCOMM) // Qualcomm Snapdragon 820: Low-power Kryo "Silver"
+  CHECK_UARCH(arch, cpu, 'Q', 0x800, 10, NA, "Kryo 260 / 280 Gold",   UARCH_CORTEX_A73,   CPU_VENDOR_ARM)      // Kryo 260 / Kryo 280 "Gold"
+  CHECK_UARCH(arch, cpu, 'Q', 0x801, 10, NA, "Kryo 260 / 280 Silver", UARCH_CORTEX_A53,   CPU_VENDOR_ARM)      // Kryo 260 / 280 "Silver"
+  CHECK_UARCH(arch, cpu, 'Q', 0x802, NA, NA, "Kryo 385 Gold",         UARCH_CORTEX_A75,   CPU_VENDOR_ARM)      // High-performance Kryo 385 "Gold" -> Cortex-A75
+  CHECK_UARCH(arch, cpu, 'Q', 0x803, NA, NA, "Kryo 385 Silver",       UARCH_CORTEX_A55r0, CPU_VENDOR_ARM)      // Low-power Kryo 385 "Silver" -> Cortex-A55r0
+  CHECK_UARCH(arch, cpu, 'Q', 0x804, NA, NA, "Kryo 485 Gold",         UARCH_CORTEX_A76,   CPU_VENDOR_ARM)      // High-performance Kryo 485 "Gold" / "Gold Prime" -> Cortex-A76
+  CHECK_UARCH(arch, cpu, 'Q', 0x805, NA, NA, "Kryo 485 Silver",       UARCH_CORTEX_A55,   CPU_VENDOR_ARM)      // Low-performance Kryo 485 "Silver" -> Cortex-A55
+  CHECK_UARCH(arch, cpu, 'Q', 0xC00, NA, NA, "Falkor",                UARCH_FALKOR,       CPU_VENDOR_QUALCOMM)
+  CHECK_UARCH(arch, cpu, 'Q', 0xC01, NA, NA, "Saphira",               UARCH_SAPHIRA,      CPU_VENDOR_QUALCOMM)
+
+  CHECK_UARCH(arch, cpu, 'S', 0x001, 1,  NA, "Exynos M1",             UARCH_EXYNOS_M1,    CPU_VENDOR_SAMSUNG)   // Exynos 8890
+  CHECK_UARCH(arch, cpu, 'S', 0x001, 4,  NA, "Exynos M2",             UARCH_EXYNOS_M2,    CPU_VENDOR_SAMSUNG)   // Exynos 8895
+  CHECK_UARCH(arch, cpu, 'S', 0x002, 1,  NA, "Exynos M3",             UARCH_EXYNOS_M3,    CPU_VENDOR_SAMSUNG)   // Exynos 9810
+  CHECK_UARCH(arch, cpu, 'S', 0x003, 1,  NA, "Exynos M4",             UARCH_EXYNOS_M4,    CPU_VENDOR_SAMSUNG)   // Exynos 9820
+  CHECK_UARCH(arch, cpu, 'S', 0x004, 1,  NA, "Exynos M5",             UARCH_EXYNOS_M5,    CPU_VENDOR_SAMSUNG)   // Exynos 9820 (this one looks wrong at uarch.c ...)
+
+  CHECK_UARCH(arch, cpu, 'p', 0x663, 1,  NA, "Xiaomi",                UARCH_XIAOMI,       CPU_VENDOR_PHYTIUM)   // From a fellow contributor (https://github.com/Dr-Noob/cpufetch/issues/125)
+                                                                                                                // Also interesting: https://en.wikipedia.org/wiki/FeiTeng_(processor)
+
+  CHECK_UARCH(arch, cpu, 'a', 0x022, NA, NA, "Icestorm",              UARCH_ICESTORM,     CPU_VENDOR_APPLE)
+  CHECK_UARCH(arch, cpu, 'a', 0x023, NA, NA, "Firestorm",             UARCH_FIRESTORM,    CPU_VENDOR_APPLE)
+  CHECK_UARCH(arch, cpu, 'a', 0x024, NA, NA, "Icestorm",              UARCH_ICESTORM,     CPU_VENDOR_APPLE)     // https://github.com/Dr-Noob/cpufetch/issues/263
+  CHECK_UARCH(arch, cpu, 'a', 0x025, NA, NA, "Firestorm",             UARCH_FIRESTORM,    CPU_VENDOR_APPLE)     // https://github.com/Dr-Noob/cpufetch/issues/263
+  CHECK_UARCH(arch, cpu, 'a', 0x030, NA, NA, "Blizzard",              UARCH_BLIZZARD,     CPU_VENDOR_APPLE)
+  CHECK_UARCH(arch, cpu, 'a', 0x031, NA, NA, "Avalanche",             UARCH_AVALANCHE,    CPU_VENDOR_APPLE)
+  CHECK_UARCH(arch, cpu, 'a', 0x048, NA, NA, "Sawtooth",              UARCH_SAWTOOTH,     CPU_VENDOR_APPLE)
+  CHECK_UARCH(arch, cpu, 'a', 0x049, NA, NA, "Everest",               UARCH_EVEREST,      CPU_VENDOR_APPLE)
+
+  CHECK_UARCH(arch, cpu, 'V', 0x581, NA, NA, "PJ4",                   UARCH_PJ4,          CPU_VENDOR_MARVELL)
+  CHECK_UARCH(arch, cpu, 'V', 0x584, NA, NA, "PJ4B-MP",               UARCH_PJ4,          CPU_VENDOR_MARVELL)
+
+  UARCH_END
+
+  return arch;
+}
+
+bool is_ARMv8_or_newer(struct cpuInfo* cpu) {
+  return cpu->arch->isa >= ISA_ARMv8_A;
+}
+
+bool has_fma_support(struct cpuInfo* cpu) {
+  // Arm A64 Instruction Set Architecture
+  // https://developer.arm.com/documentation/ddi0596/2021-12/SIMD-FP-Instructions
+  return is_ARMv8_or_newer(cpu);
+}
+
+int get_vpus_width(struct cpuInfo* cpu) {
+  // If the CPU has NEON, width can be 64 or 128 [1].
+  // In >= ARMv8, NEON are 128 bits width [2]
+  // If the CPU has SVE/SVE2, width can be between 128-2048 [3],
+  // so we get the exact value from cntb [4]
+  //
+  // [1] https://en.wikipedia.org/wiki/ARM_architecture_family#Advanced_SIMD_(Neon)
+  // [2] https://developer.arm.com/documentation/102474/0100/Fundamentals-of-Armv8-Neon-technology
+  // [3] https://www.anandtech.com/show/16640/arm-announces-neoverse-v1-n2-platforms-cpus-cmn700-mesh/5
+  // [4] https://developer.arm.com/documentation/ddi0596/2020-12/SVE-Instructions/CNTB--CNTD--CNTH--CNTW--Set-scalar-to-multiple-of-predicate-constraint-element-count-
+
+  if (cpu->feat->SVE && cpu->feat->cntb > 0) {
+    return cpu->feat->cntb * 8;
+  }
+  else if (cpu->feat->NEON) {
+    if(is_ARMv8_or_newer(cpu)) {
+      return 128;
+    }
+    else {
+      return 64;
+    }
+  }
+  else {
+    return 32;
+  }
+}
+
+int get_number_of_vpus(struct cpuInfo* cpu) {
+  MICROARCH ua = cpu->arch->uarch;
+
+  switch(ua) {
+    case UARCH_CORTEX_X925: // [https://www.anandtech.com/show/21399/arm-unveils-2024-cpu-core-designs-cortex-x925-a725-and-a520-arm-v9-2-redefined-for-3nm-/2]
+      return 6;
+    case UARCH_EVEREST:     // Just a guess, needs confirmation.
+    case UARCH_FIRESTORM:   // [https://dougallj.github.io/applecpu/firestorm-simd.html]
+    case UARCH_AVALANCHE:   // [https://en.wikipedia.org/wiki/Comparison_of_ARM_processors]
+    case UARCH_CORTEX_X1:   // [https://www.anandtech.com/show/15813/arm-cortex-a78-cortex-x1-cpu-ip-diverging/3]
+    case UARCH_CORTEX_X1C:  // Assuming same as X1
+    case UARCH_CORTEX_X2:   // [https://www.anandtech.com/show/16693/arm-announces-mobile-armv9-cpu-microarchitectures-cortexx2-cortexa710-cortexa510/2]
+    case UARCH_CORTEX_X3:   // [https://www.hwcooling.net/en/cortex-x3-the-new-fastest-arm-core-architecture-analysis: "The FPU and SIMD unit of the core still has four pipelines"]
+    case UARCH_CORTEX_X4:   // [https://www.anandtech.com/show/18871/arm-unveils-armv92-mobile-architecture-cortex-x4-a720-and-a520-64bit-exclusive/2]: "Cortex-X4: Out-of-Order Core"
+    case UARCH_NEOVERSE_V1: // [https://en.wikichip.org/wiki/arm_holdings/microarchitectures/neoverse_v1]
+    case UARCH_NEOVERSE_V2: // [https://chipsandcheese.com/2023/09/11/hot-chips-2023-arms-neoverse-v2/]
+    case UARCH_NEOVERSE_V3: // Assuming same as V2
+      return 4;
+    case UARCH_SAWTOOTH:    // Needs confirmation, rn this is the best we know: https://mastodon.social/@dougall/111118317031041336
+    case UARCH_EXYNOS_M3:   // [https://www.anandtech.com/show/12361/samsung-exynos-m3-architecture]
+    case UARCH_EXYNOS_M4:   // [https://en.wikichip.org/wiki/samsung/microarchitectures/m4#Block_Diagram]
+    case UARCH_EXYNOS_M5:   // [https://en.wikichip.org/wiki/samsung/microarchitectures/m5]
+      return 3;
+    case UARCH_ICESTORM:    // [https://dougallj.github.io/applecpu/icestorm-simd.html]
+    case UARCH_BLIZZARD:    // [https://en.wikipedia.org/wiki/Comparison_of_ARM_processors]
+    case UARCH_TAISHAN_V110:// [https://www-file.huawei.com/-/media/corp2020/pdf/publications/huawei-research/2022/huawei-research-issue1-en.pdf]: "128-bit x 2 for single precision"
+    case UARCH_TAISHAN_V120:// Not confirmed, asssuming same as v110
+    case UARCH_TAISHAN_V200:// Not confirmed, asssuming same as v110
+    case UARCH_CORTEX_A57:  // [https://www.anandtech.com/show/8718/the-samsung-galaxy-note-4-exynos-review/5]
+    case UARCH_CORTEX_A72:  // [https://www.anandtech.com/show/10347/arm-cortex-a73-artemis-unveiled/2]
+    case UARCH_CORTEX_A73:  // [https://www.anandtech.com/show/10347/arm-cortex-a73-artemis-unveiled/2]
+    case UARCH_CORTEX_A75:  // [https://www.anandtech.com/show/11441/dynamiq-and-arms-new-cpus-cortex-a75-a55/3]
+    case UARCH_CORTEX_A76:  // [https://www.anandtech.com/show/12785/arm-cortex-a76-cpu-unveiled-7nm-powerhouse/3]
+    case UARCH_CORTEX_A77:  // [https://fuse.wikichip.org/news/2339/arm-unveils-cortex-a77-emphasizes-single-thread-performance]
+    case UARCH_CORTEX_A78:  // [https://fuse.wikichip.org/news/3536/arm-unveils-the-cortex-a78-when-less-is-more]
+    case UARCH_CORTEX_A78C: // Assuming same as A78
+    case UARCH_CORTEX_A78AE:// Assuming same as A78
+    case UARCH_EXYNOS_M1:   // [https://www.anandtech.com/show/12361/samsung-exynos-m3-architecture]
+    case UARCH_EXYNOS_M2:   // [https://www.anandtech.com/show/12361/samsung-exynos-m3-architecture]
+    case UARCH_NEOVERSE_N1: // [https://en.wikichip.org/wiki/arm_holdings/microarchitectures/neoverse_n1#Individual_Core]
+    case UARCH_NEOVERSE_N2: // [https://chipsandcheese.com/2023/08/18/arms-neoverse-n2-cortex-a710-for-servers/]
+    case UARCH_CORTEX_A710: // [https://chipsandcheese.com/2023/08/11/arms-cortex-a710-winning-by-default/]: Fig in Core Overview. Table in Instruction Scheduling and Execution
+    case UARCH_CORTEX_A715: // [https://www.hwcooling.net/en/arm-introduces-new-cortex-a715-core-architecture-analysis/]: "the numbers of ALU and FPU execution units themselves >
+    case UARCH_CORTEX_A720: // Assuming same as A715: https://www.anandtech.com/show/18871/arm-unveils-armv92-mobile-architecture-cortex-x4-a720-and-a520-64bit-exclusive/3
+    case UARCH_CORTEX_A725: // Assuming same as A720
+      return 2;
+    case UARCH_NEOVERSE_E1: // [https://www.anandtech.com/show/13959/arm-announces-neoverse-n1-platform/5]
+    // A510 is integrated as part of a Complex. Normally, each complex would incorporate two Cortex-A510 cores.
+    // Each complex incorporates a single VPU with 2 ports, so for each A510 there is theoretically 1 port.
+    case UARCH_CORTEX_A510: // [https://en.wikichip.org/wiki/arm_holdings/microarchitectures/cortex-a510#Vector_Processing_Unit_.28VPU.29]
+    case UARCH_CORTEX_A520: // Assuming same as A50: https://www.anandtech.com/show/18871/arm-unveils-armv92-mobile-architecture-cortex-x4-a720-and-a520-64bit-exclusive/4
+      return 1;
+    default:
+      // ARMv6
+      // ARMv7
+      // Remaining UARCH_CORTEX_AXX
+      // Old Snapdragon (e.g., Scorpion, Krait, etc)
+      return 1;
+  }
+}
+
+char* get_str_uarch(struct cpuInfo* cpu) {
+  return cpu->arch->uarch_str;
+}
+
+MICROARCH get_uarch(struct uarch* arch) {
+  return arch->uarch;
+}
+
+void free_uarch_struct(struct uarch* arch) {
+  free(arch->uarch_str);
+  free(arch);
+}

src/arm/uarch.h

@@ -0,0 +1,115 @@
+#ifndef __UARCH__
+#define __UARCH__
+
+#include <stdint.h>
+
+#include "midr.h"
+
+enum {
+  UARCH_UNKNOWN,
+  // ARM
+  UARCH_ARM7,
+  UARCH_ARM9,
+  UARCH_ARM1136,
+  UARCH_ARM1156,
+  UARCH_ARM1176,
+  UARCH_ARM11MPCORE,
+  UARCH_CORTEX_A5,
+  UARCH_CORTEX_A7,
+  UARCH_CORTEX_A8,
+  UARCH_CORTEX_A9,
+  UARCH_CORTEX_A12,
+  UARCH_CORTEX_A15,
+  UARCH_CORTEX_A17,
+  UARCH_CORTEX_A32,
+  UARCH_CORTEX_A35,
+  UARCH_CORTEX_A53,
+  UARCH_CORTEX_A55r0, // ARM Cortex-A55 revision 0 (restricted dual-issue capabilities compared to revision 1+).
+  UARCH_CORTEX_A55,
+  UARCH_CORTEX_A57,
+  UARCH_CORTEX_A65,
+  UARCH_CORTEX_A72,
+  UARCH_CORTEX_A73,
+  UARCH_CORTEX_A75,
+  UARCH_CORTEX_A76,
+  UARCH_CORTEX_A77,
+  UARCH_CORTEX_A78,
+  UARCH_CORTEX_A78AE,
+  UARCH_CORTEX_A78C,
+  UARCH_CORTEX_A510,
+  UARCH_CORTEX_A520,
+  UARCH_CORTEX_A710,
+  UARCH_CORTEX_A715,
+  UARCH_CORTEX_A720,
+  UARCH_CORTEX_A725,
+  UARCH_CORTEX_X1,
+  UARCH_CORTEX_X1C,
+  UARCH_CORTEX_X2,
+  UARCH_CORTEX_X3,
+  UARCH_CORTEX_X4,
+  UARCH_CORTEX_X925,
+  UARCH_NEOVERSE_N1,
+  UARCH_NEOVERSE_N2,
+  UARCH_NEOVERSE_E1,
+  UARCH_NEOVERSE_V1,
+  UARCH_NEOVERSE_V2,
+  UARCH_NEOVERSE_V3,
+  UARCH_SCORPION,
+  UARCH_KRAIT,
+  UARCH_KYRO,
+  UARCH_FALKOR,
+  UARCH_SAPHIRA,
+  UARCH_DENVER,
+  UARCH_DENVER2,
+  UARCH_CARMEL,
+  // SAMSUNG
+  UARCH_EXYNOS_M1,  // Samsung Exynos M1 (Exynos 8890 big cores)
+  UARCH_EXYNOS_M2,  // Samsung Exynos M2 (Exynos 8895 big cores)
+  UARCH_EXYNOS_M3,  // Samsung Exynos M3 (Exynos 9810 big cores)
+  UARCH_EXYNOS_M4,  // Samsung Exynos M4 (Exynos 9820 big cores)
+  UARCH_EXYNOS_M5,  // Samsung Exynos M5 (Exynos 9830 big cores)
+  // APPLE
+  UARCH_SWIFT,      // Apple A6 and A6X processors.
+  UARCH_CYCLONE,    // Apple A7 processor.
+  UARCH_TYPHOON,    // Apple A8 and A8X processor
+  UARCH_TWISTER,    // Apple A9 and A9X processor.
+  UARCH_HURRICANE,  // Apple A10 and A10X processor.
+  UARCH_MONSOON,    // Apple A11 processor (big cores).
+  UARCH_MISTRAL,    // Apple A11 processor (little cores).
+  UARCH_VORTEX,     // Apple A12 processor (big cores).
+  UARCH_TEMPEST,    // Apple A12 processor (big cores).
+  UARCH_LIGHTNING,  // Apple A13 processor (big cores).
+  UARCH_THUNDER,    // Apple A13 processor (little cores).
+  UARCH_ICESTORM,   // Apple M1 processor (little cores).
+  UARCH_FIRESTORM,  // Apple M1 processor (big cores).
+  UARCH_BLIZZARD,   // Apple M2 processor (little cores).
+  UARCH_AVALANCHE,  // Apple M2 processor (big cores).
+  UARCH_SAWTOOTH,   // Apple M3 processor (little cores).
+  UARCH_EVEREST,    // Apple M3 processor (big cores).
+  // CAVIUM
+  UARCH_THUNDERX,   // Cavium ThunderX
+  UARCH_THUNDERX2,  // Cavium ThunderX2 (originally Broadcom Vulkan).
+  // MARVELL
+  UARCH_PJ4,
+  UARCH_BRAHMA_B15,
+  UARCH_BRAHMA_B53,
+  UARCH_XGENE,        // Applied Micro X-Gene.
+  // HUAWEI
+  UARCH_TAISHAN_V110, // HiSilicon TaiShan v110
+  UARCH_TAISHAN_V120, // HiSilicon TaiShan v120
+  UARCH_TAISHAN_V200, // HiSilicon TaiShan v200
+  // PHYTIUM
+  UARCH_XIAOMI,       // Not to be confused with Xiaomi Inc
+};
+
+typedef uint32_t MICROARCH;
+
+struct uarch* get_uarch_from_midr(uint32_t midr, struct cpuInfo* cpu);
+int get_number_of_vpus(struct cpuInfo* cpu);
+int get_vpus_width(struct cpuInfo* cpu);
+bool has_fma_support(struct cpuInfo* cpu);
+char* get_str_uarch(struct cpuInfo* cpu);
+void free_uarch_struct(struct uarch* arch);
+MICROARCH get_uarch(struct uarch* arch);
+
+#endif

src/arm/udev.c

@@ -0,0 +1,129 @@
+#include "../common/global.h"
+#include "udev.h"
+#include "midr.h"
+
+#define _PATH_DEVICETREE_MODEL       "/sys/firmware/devicetree/base/model"
+
+#define CPUINFO_CPU_IMPLEMENTER_STR  "CPU implementer\t: "
+#define CPUINFO_CPU_ARCHITECTURE_STR "CPU architecture: "
+#define CPUINFO_CPU_VARIANT_STR      "CPU variant\t: "
+#define CPUINFO_CPU_PART_STR         "CPU part\t: "
+#define CPUINFO_CPU_REVISION_STR     "CPU revision\t: "
+#define CPUINFO_HARDWARE_STR         "Hardware\t: "
+#define CPUINFO_REVISION_STR         "Revision\t: "
+
+#define CPUINFO_CPU_STRING "processor"
+
+long parse_cpuinfo_field(char* buf, char* field_str, int field_base) {
+  char* tmp = strstr(buf, field_str);
+  if(tmp == NULL) return -1;
+  tmp += strlen(field_str);
+
+  char* end;
+  errno = 0;
+  long ret = strtol(tmp, &end, field_base);
+  if(errno != 0) {
+    printWarn("strtol: %s:\n", strerror(errno));
+    return -1;
+  }
+
+  return ret;
+}
+// https://developer.arm.com/docs/ddi0595/h/aarch32-system-registers/midr
+// https://static.docs.arm.com/ddi0595/h/SysReg_xml_v86A-2020-06.pdf
+uint32_t get_midr_from_cpuinfo(uint32_t core, bool* success) {
+  int filelen;
+  char* buf;
+  *success = true;
+  if((buf = read_file(_PATH_CPUINFO, &filelen)) == NULL) {
+    printWarn("read_file: %s: %s\n", _PATH_CPUINFO, strerror(errno));
+    *success = false;
+    return 0;
+  }
+
+  char* tmp = strstr(buf, CPUINFO_CPU_STRING);
+  uint32_t current_core = 0;
+  while(core != current_core && tmp != NULL) {
+    tmp++;
+    current_core++;
+    tmp = strstr(tmp, CPUINFO_CPU_STRING);
+  }
+
+  if(tmp == NULL) {
+    *success = false;
+    return 0;
+  }
+
+  uint32_t cpu_implementer;
+  uint32_t cpu_architecture;
+  uint32_t cpu_variant;
+  uint32_t cpu_part;
+  uint32_t cpu_revision;
+  uint32_t midr = 0;
+  long ret;
+
+  if ((ret = parse_cpuinfo_field(tmp, CPUINFO_CPU_IMPLEMENTER_STR, 16)) < 0) {
+    printBug("get_midr_from_cpuinfo: Failed parsing cpu_implementer\n");
+    *success = false;
+    return 0;
+  }
+  cpu_implementer = (uint32_t) ret;
+
+  if ((ret = parse_cpuinfo_field(tmp, CPUINFO_CPU_ARCHITECTURE_STR, 10)) < 0) {
+    printBug("get_midr_from_cpuinfo: Failed parsing cpu_architecture\n");
+    *success = false;
+    return 0;
+  }
+  cpu_architecture = (uint32_t) 0xF; // Why?
+
+  if ((ret = parse_cpuinfo_field(tmp, CPUINFO_CPU_VARIANT_STR, 16)) < 0) {
+    printBug("get_midr_from_cpuinfo: Failed parsing cpu_variant\n");
+    *success = false;
+    return 0;
+  }
+  cpu_variant = (uint32_t) ret;
+
+  if ((ret = parse_cpuinfo_field(tmp, CPUINFO_CPU_PART_STR, 16)) < 0) {
+    printBug("get_midr_from_cpuinfo: Failed parsing cpu_part\n");
+    *success = false;
+    return 0;
+  }
+  cpu_part = (uint32_t) ret;
+
+  if ((ret = parse_cpuinfo_field(tmp, CPUINFO_CPU_REVISION_STR, 10)) < 0) {
+    printBug("get_midr_from_cpuinfo: Failed parsing cpu_revision\n");
+    *success = false;
+    return 0;
+  }
+  cpu_revision = (uint32_t) ret;
+
+  midr = midr_set_implementer(midr, cpu_implementer);
+  midr = midr_set_variant(midr, cpu_variant);
+  midr = midr_set_architecture(midr, cpu_architecture);
+  midr = midr_set_part(midr, cpu_part);
+  midr = midr_set_revision(midr, cpu_revision);
+
+  return midr;
+}
+
+char* get_hardware_from_cpuinfo(void) {
+  return get_field_from_cpuinfo(CPUINFO_HARDWARE_STR);
+}
+
+char* get_revision_from_cpuinfo(void) {
+  return get_field_from_cpuinfo(CPUINFO_REVISION_STR);
+}
+
+bool is_raspberry_pi(void) {
+  int filelen;
+  char* buf;
+  if((buf = read_file(_PATH_DEVICETREE_MODEL, &filelen)) == NULL) {
+    return false;
+  }
+
+  char* tmp;
+  if((tmp = strstr(buf, "Raspberry Pi")) == NULL) {
+    return false;
+  }
+  return true;
+}

src/arm/udev.h

@@ -0,0 +1,18 @@
+#ifndef __UDEV_ARM__
+#define __UDEV_ARM__
+
+#include "../common/udev.h"
+
+#define _PATH_SUNXI_NVMEM  "/sys/bus/nvmem/devices/sunxi-sid0/nvmem"
+#define _PATH_RK_EFUSE0    "/sys/bus/nvmem/devices/rockchip-efuse0/nvmem"
+#define _PATH_RK_OTP0      "/sys/bus/nvmem/devices/rockchip-otp0/nvmem"
+
+#define UNKNOWN -1
+int get_ncores_from_cpuinfo(void);
+uint32_t get_midr_from_cpuinfo(uint32_t core, bool* success);
+char* get_hardware_from_cpuinfo(void);
+char* get_revision_from_cpuinfo(void);
+bool is_raspberry_pi(void);
+
+#endif
+

src/ascii.h

@@ -1,49 +0,0 @@
-#ifndef __ASCII__
-#define __ASCII__
-
-#define NUMBER_OF_LINES   19
-#define LINE_SIZE         62
-
-#define AMD_ASCII \
-"                                                              \
-                                                              \
-                                                              \
-                                                              \
-                                                              \
-                                                              \
-     @@@@      @@@       @@@   @@@@@@@@        ############   \
-    @@@@@@     @@@@@    @@@@   @@@    @@@@       ##########   \
-   @@@  @@@    @@@@@@@@@@@@@   @@@      @@      #      ####   \
-  @@@    @@@   @@@  @@@  @@@   @@@      @@@   ###      ####   \
- @@@@@@@@@@@@  @@@       @@@   @@@     @@@   ####    ## ###   \
- @@@      @@@  @@@       @@@   @@@@@@@@@     ########    ##   \
-                                                              \
-                                                              \
-                                                              \
-                                                              \
-                                                              \
-                                                              \
-                                                             "
-
-#define INTEL_ASCII \
-"                              ################                \
-                      #######                #######          \
-                 ####                              ####       \
-             ###                                     ####     \
-        ###                                             ###   \
-        ###                                             ###   \
-     #                    ###                ###        ###   \
-   ##   ###   #########   ######   ######    ###        ###   \
-  ##    ###   ###    ###  ###    ####  ####  ###        ###   \
- ##     ###   ###    ###  ###    ###    ###  ###       ###    \
-##      ###   ###    ###  ###    ##########  ###     ####     \
-##      ###   ###    ###  ###    ###         ###   #####      \
-##       ##   ###    ###   #####  #########   ##  ###         \
-###                                                           \
- ###                                                          \
- ####                                        ####             \
-   #####                               ##########             \
-     ##########               ################                \
-         ###############################                     "
-
-#endif

src/common/args.c

@@ -0,0 +1,400 @@
+#include <getopt.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "args.h"
+#include "global.h"
+
+#define NUM_COLORS      5
+
+#define COLOR_STR_INTEL     "intel"
+#define COLOR_STR_INTEL_NEW "intel-new"
+#define COLOR_STR_AMD       "amd"
+#define COLOR_STR_IBM       "ibm"
+#define COLOR_STR_ARM       "arm"
+#define COLOR_STR_ROCKCHIP  "rockchip"
+#define COLOR_STR_SIFIVE    "sifive"
+
+static const char *SYTLES_STR_LIST[] = {
+  [STYLE_EMPTY]   = NULL,
+  [STYLE_FANCY]   = "fancy",
+  [STYLE_RETRO]   = "retro",
+  [STYLE_LEGACY]  = "legacy",
+  [STYLE_INVALID] = NULL
+};
+
+struct args_struct {
+  bool debug_flag;
+  bool help_flag;
+  bool raw_flag;
+  bool accurate_pp;
+  bool measure_max_frequency_flag;
+  bool full_cpu_name_flag;
+  bool logo_long;
+  bool logo_short;
+  bool logo_intel_new;
+  bool logo_intel_old;
+  bool verbose_flag;
+  bool version_flag;
+  STYLE style;
+  struct color** colors;
+};
+
+const char args_chr[] = {
+  /* [ARG_STYLE]            = */ 's',
+  /* [ARG_COLOR]            = */ 'c',
+  /* [ARG_HELP]             = */ 'h',
+  /* [ARG_RAW]              = */ 'r',
+  /* [ARG_FULLCPUNAME]      = */ 'F',
+  /* [ARG_LOGO_LONG]        = */ 1,
+  /* [ARG_LOGO_SHORT]       = */ 2,
+  /* [ARG_LOGO_INTEL_NEW]   = */ 3,
+  /* [ARG_LOGO_INTEL_OLD]   = */ 4,
+  /* [ARG_ACCURATE_PP]      = */ 5,
+  /* [ARG_MEASURE_MAX_FREQ] = */ 6,
+  /* [ARG_DEBUG]            = */ 'd',
+  /* [ARG_VERBOSE]          = */ 'v',
+  /* [ARG_VERSION]          = */ 'V',
+};
+
+const char *args_str[] = {
+  /* [ARG_STYLE]            = */ "style",
+  /* [ARG_COLOR]            = */ "color",
+  /* [ARG_HELP]             = */ "help",
+  /* [ARG_RAW]              = */ "raw",
+  /* [ARG_FULLCPUNAME]      = */ "full-cpu-name",
+  /* [ARG_LOGO_LONG]        = */ "logo-long",
+  /* [ARG_LOGO_SHORT]       = */ "logo-short",
+  /* [ARG_LOGO_INTEL_NEW]   = */ "logo-intel-new",
+  /* [ARG_LOGO_INTEL_OLD]   = */ "logo-intel-old",
+  /* [ARG_ACCURATE_PP]      = */ "accurate-pp",
+  /* [ARG_MEASURE_MAX_FREQ] = */ "measure-max-freq",
+  /* [ARG_DEBUG]            = */ "debug",
+  /* [ARG_VERBOSE]          = */ "verbose",
+  /* [ARG_VERSION]          = */ "version",
+};
+
+static struct args_struct args;
+
+STYLE get_style(void) {
+  return args.style;
+}
+
+struct color** get_colors(void) {
+  return args.colors;
+}
+
+bool show_help(void) {
+  return args.help_flag;
+}
+
+bool show_version(void) {
+  return args.version_flag;
+}
+
+bool show_debug(void) {
+  return args.debug_flag;
+}
+
+bool show_raw(void) {
+  return args.raw_flag;
+}
+
+bool accurate_pp(void) {
+  return args.accurate_pp;
+}
+
+bool measure_max_frequency_flag(void) {
+  return args.measure_max_frequency_flag;
+}
+
+bool show_full_cpu_name(void) {
+  return args.full_cpu_name_flag;
+}
+
+bool show_logo_long(void) {
+  return args.logo_long;
+}
+
+bool show_logo_short(void) {
+  return args.logo_short;
+}
+
+bool show_logo_intel_new(void) {
+  return args.logo_intel_new;
+}
+
+bool show_logo_intel_old(void) {
+  return args.logo_intel_old;
+}
+
+bool verbose_enabled(void) {
+  return args.verbose_flag;
+}
+
+int max_arg_str_length(void) {
+  int max_len = -1;
+  int len = sizeof(args_str) / sizeof(args_str[0]);
+  for(int i=0; i < len; i++) {
+    max_len = max(max_len, (int) strlen(args_str[i]));
+  }
+  return max_len;
+}
+
+STYLE parse_style(char* style) {
+  uint8_t i = 0;
+  uint8_t styles_count = sizeof(SYTLES_STR_LIST) / sizeof(SYTLES_STR_LIST[0]);
+
+  while(i != styles_count && (SYTLES_STR_LIST[i] == NULL || strcmp(SYTLES_STR_LIST[i], style) != 0))
+    i++;
+
+  if(i == styles_count)
+    return STYLE_INVALID;
+
+  return i;
+}
+
+void free_colors_struct(struct color** cs) {
+  for(int i=0; i < NUM_COLORS; i++) {
+    free(cs[i]);
+  }
+  free(cs);
+}
+
+bool parse_color(char* optarg_str, struct color*** cs) {
+  for(int i=0; i < NUM_COLORS; i++) {
+    (*cs)[i] = emalloc(sizeof(struct color));
+  }
+
+  struct color** c = *cs;
+  int32_t ret;
+  char* str_to_parse = NULL;
+  char* color_to_copy = NULL;
+  bool free_ptr = true;
+
+  if(strcmp(optarg_str, COLOR_STR_INTEL) == 0) color_to_copy = COLOR_DEFAULT_INTEL;
+  else if(strcmp(optarg_str, COLOR_STR_INTEL_NEW) == 0) color_to_copy = COLOR_DEFAULT_INTEL_NEW;
+  else if(strcmp(optarg_str, COLOR_STR_AMD) == 0) color_to_copy = COLOR_DEFAULT_AMD;
+  else if(strcmp(optarg_str, COLOR_STR_IBM) == 0) color_to_copy = COLOR_DEFAULT_IBM;
+  else if(strcmp(optarg_str, COLOR_STR_ARM) == 0) color_to_copy = COLOR_DEFAULT_ARM;
+  else if(strcmp(optarg_str, COLOR_STR_ROCKCHIP) == 0) color_to_copy = COLOR_DEFAULT_ROCKCHIP;
+  else if(strcmp(optarg_str, COLOR_STR_SIFIVE) == 0) color_to_copy = COLOR_DEFAULT_SIFIVE;
+  else {
+    str_to_parse = optarg_str;
+    free_ptr = false;
+  }
+
+  if(str_to_parse == NULL) {
+    str_to_parse = emalloc(sizeof(char) * (strlen(color_to_copy) + 1));
+    strcpy(str_to_parse, color_to_copy);
+  }
+
+  ret = sscanf(str_to_parse, "%d,%d,%d:%d,%d,%d:%d,%d,%d:%d,%d,%d:%d,%d,%d",
+               &c[0]->R, &c[0]->G, &c[0]->B,
+               &c[1]->R, &c[1]->G, &c[1]->B,
+               &c[2]->R, &c[2]->G, &c[2]->B,
+               &c[3]->R, &c[3]->G, &c[3]->B,
+               &c[4]->R, &c[4]->G, &c[4]->B);
+
+  int expected_colors = 3 * NUM_COLORS;
+  if(ret != expected_colors) {
+    printErr("Expected to read %d values for color but read %d", expected_colors, ret);
+    return false;
+  }
+
+  for(int i=0; i < NUM_COLORS; i++) {
+    if(c[i]->R < 0 || c[i]->R > 255) {
+      printErr("Red in color %d is invalid: %d; must be in range (0, 255)", i+1, c[i]->R);
+      return false;
+    }
+    if(c[i]->G < 0 || c[i]->G > 255) {
+      printErr("Green in color %d is invalid: %d; must be in range (0, 255)", i+1, c[i]->G);
+      return false;
+    }
+    if(c[i]->B < 0 || c[i]->B > 255) {
+      printErr("Blue in color %d is invalid: %d; must be in range (0, 255)", i+1, c[i]->B);
+      return false;
+    }
+  }
+
+  if(free_ptr) free (str_to_parse);
+
+  return true;
+}
+
+char* build_short_options(void) {
+  const char *c = args_chr;
+  int len = sizeof(args_chr) / sizeof(args_chr[0]);
+  char* str = (char *) ecalloc(len*2 + 1, sizeof(char));
+
+#ifdef ARCH_X86
+  sprintf(str, "%c:%c:%c%c%c%c%c%c%c%c%c%c%c%c",
+  c[ARG_STYLE], c[ARG_COLOR], c[ARG_HELP],
+  c[ARG_RAW], c[ARG_FULLCPUNAME],
+  c[ARG_LOGO_SHORT], c[ARG_LOGO_LONG],
+  c[ARG_LOGO_INTEL_NEW], c[ARG_LOGO_INTEL_OLD],
+  c[ARG_ACCURATE_PP], c[ARG_MEASURE_MAX_FREQ],
+  c[ARG_DEBUG], c[ARG_VERBOSE],
+  c[ARG_VERSION]);
+#elif ARCH_ARM
+  sprintf(str, "%c:%c:%c%c%c%c%c%c%c",
+  c[ARG_STYLE], c[ARG_COLOR], c[ARG_HELP],
+  c[ARG_LOGO_SHORT], c[ARG_LOGO_LONG],
+  c[ARG_MEASURE_MAX_FREQ],
+  c[ARG_DEBUG], c[ARG_VERBOSE],
+  c[ARG_VERSION]);
+#else
+  sprintf(str, "%c:%c:%c%c%c%c%c%c",
+  c[ARG_STYLE], c[ARG_COLOR], c[ARG_HELP],
+  c[ARG_LOGO_SHORT], c[ARG_LOGO_LONG],
+  c[ARG_DEBUG], c[ARG_VERBOSE],
+  c[ARG_VERSION]);
+#endif
+
+  return str;
+}
+
+bool parse_args(int argc, char* argv[]) {
+  int opt;
+  int option_index = 0;
+  opterr = 0;
+
+  bool color_flag = false;
+  args.debug_flag = false;
+  args.accurate_pp = false;
+  args.full_cpu_name_flag = false;
+  args.raw_flag = false;
+  args.verbose_flag = false;
+  args.logo_long = false;
+  args.logo_short = false;
+  args.logo_intel_new = false;
+  args.logo_intel_old = false;
+  args.help_flag = false;
+  args.style = STYLE_EMPTY;
+  args.colors = NULL;
+
+  // Temporary enable verbose level to allow printing warnings inside parse_args
+  set_log_level(true);
+
+  const struct option long_options[] = {
+    {args_str[ARG_STYLE],            required_argument, 0, args_chr[ARG_STYLE]            },
+    {args_str[ARG_COLOR],            required_argument, 0, args_chr[ARG_COLOR]            },
+    {args_str[ARG_HELP],             no_argument,       0, args_chr[ARG_HELP]             },
+#ifdef ARCH_X86
+    {args_str[ARG_LOGO_INTEL_NEW],   no_argument,       0, args_chr[ARG_LOGO_INTEL_NEW]   },
+    {args_str[ARG_LOGO_INTEL_OLD],   no_argument,       0, args_chr[ARG_LOGO_INTEL_OLD]   },
+    {args_str[ARG_ACCURATE_PP],      no_argument,       0, args_chr[ARG_ACCURATE_PP]      },
+    {args_str[ARG_MEASURE_MAX_FREQ], no_argument,       0, args_chr[ARG_MEASURE_MAX_FREQ] },
+    {args_str[ARG_FULLCPUNAME],      no_argument,       0, args_chr[ARG_FULLCPUNAME]      },
+    {args_str[ARG_RAW],              no_argument,       0, args_chr[ARG_RAW]              },
+#elif ARCH_ARM
+    {args_str[ARG_MEASURE_MAX_FREQ], no_argument,       0, args_chr[ARG_MEASURE_MAX_FREQ] },
+#endif
+    {args_str[ARG_LOGO_SHORT],       no_argument,       0, args_chr[ARG_LOGO_SHORT]       },
+    {args_str[ARG_LOGO_LONG],        no_argument,       0, args_chr[ARG_LOGO_LONG]        },
+    {args_str[ARG_DEBUG],            no_argument,       0, args_chr[ARG_DEBUG]            },
+    {args_str[ARG_VERBOSE],          no_argument,       0, args_chr[ARG_VERBOSE]          },
+    {args_str[ARG_VERSION],          no_argument,       0, args_chr[ARG_VERSION]          },
+    {0, 0, 0, 0}
+  };
+
+  char* short_options = build_short_options();
+  opt = getopt_long(argc, argv, short_options, long_options, &option_index);
+
+  while (!args.help_flag && !args.debug_flag && !args.version_flag && opt != -1) {
+    if(opt == args_chr[ARG_COLOR]) {
+      if(color_flag) {
+        printErr("Color option specified more than once");
+        return false;
+      }
+      color_flag  = true;
+      args.colors = emalloc(sizeof(struct color *) * NUM_COLORS);
+      if(!parse_color(optarg, &args.colors)) {
+        return false;
+      }
+    }
+    else if(opt == args_chr[ARG_STYLE]) {
+      if(args.style != STYLE_EMPTY) {
+        printErr("Style option specified more than once");
+        return false;
+      }
+      args.style = parse_style(optarg);
+      if(args.style == STYLE_INVALID) {
+        printErr("Invalid style '%s'",optarg);
+        return false;
+      }
+    }
+    else if(opt == args_chr[ARG_HELP]) {
+      args.help_flag  = true;
+    }
+    else if(opt == args_chr[ARG_ACCURATE_PP]) {
+       args.accurate_pp = true;
+    }
+    else if(opt == args_chr[ARG_MEASURE_MAX_FREQ]) {
+       args.measure_max_frequency_flag = true;
+    }
+    else if(opt == args_chr[ARG_FULLCPUNAME]) {
+       args.full_cpu_name_flag = true;
+    }
+    else if(opt == args_chr[ARG_LOGO_SHORT]) {
+       args.logo_short = true;
+    }
+    else if(opt == args_chr[ARG_LOGO_LONG]) {
+       args.logo_long = true;
+    }
+    else if(opt == args_chr[ARG_LOGO_INTEL_NEW]) {
+       args.logo_intel_new = true;
+    }
+    else if(opt == args_chr[ARG_LOGO_INTEL_OLD]) {
+       args.logo_intel_old = true;
+    }
+    else if(opt == args_chr[ARG_RAW]) {
+       args.raw_flag  = true;
+    }
+    else if(opt == args_chr[ARG_VERBOSE]) {
+      args.verbose_flag  = true;
+    }
+    else if(opt == args_chr[ARG_DEBUG]) {
+      args.debug_flag  = true;
+    }
+    else if(opt == args_chr[ARG_VERSION]) {
+      args.version_flag = true;
+    }
+    else {
+      printWarn("Invalid options");
+      args.help_flag  = true;
+    }
+
+    option_index = 0;
+    opt = getopt_long(argc, argv, short_options, long_options, &option_index);
+  }
+
+  if(optind < argc) {
+    printWarn("Invalid options");
+    args.help_flag  = true;
+  }
+
+  if(args.logo_intel_new && args.logo_intel_old) {
+    printWarn("%s and %s cannot be specified together", args_str[ARG_LOGO_INTEL_NEW], args_str[ARG_LOGO_INTEL_OLD]);
+    args.logo_intel_new = false;
+    args.logo_intel_old = false;
+  }
+
+  if(args.logo_short && args.logo_long) {
+    printWarn("%s and %s cannot be specified together", args_str[ARG_LOGO_SHORT], args_str[ARG_LOGO_LONG]);
+    args.logo_short = false;
+    args.logo_long = false;
+  }
+
+#if defined(ARCH_X86) && ! defined(__linux__)
+  if(args.accurate_pp) {
+    printWarn("%s option is valid only in Linux x86_64", args_str[ARG_ACCURATE_PP]);
+    args.help_flag  = true;
+  }
+#endif
+
+  // Leave log level untouched after returning
+  set_log_level(false);
+
+  return true;
+}

src/common/args.h

@@ -0,0 +1,61 @@
+#ifndef __ARGS__
+#define __ARGS__
+
+#include <stdbool.h>
+#include <stdint.h>
+
+struct color {
+  int32_t R;
+  int32_t G;
+  int32_t B;
+};
+
+enum {
+  STYLE_EMPTY,
+  STYLE_FANCY,
+  STYLE_RETRO,
+  STYLE_LEGACY,
+  STYLE_INVALID
+};
+
+enum {
+  ARG_STYLE,
+  ARG_COLOR,
+  ARG_HELP,
+  ARG_RAW,
+  ARG_FULLCPUNAME,
+  ARG_LOGO_LONG,
+  ARG_LOGO_SHORT,
+  ARG_LOGO_INTEL_NEW,
+  ARG_LOGO_INTEL_OLD,
+  ARG_ACCURATE_PP,
+  ARG_MEASURE_MAX_FREQ,
+  ARG_DEBUG,
+  ARG_VERBOSE,
+  ARG_VERSION
+};
+
+extern const char args_chr[];
+extern const char *args_str[];
+
+#include "printer.h"
+
+int max_arg_str_length(void);
+bool parse_args(int argc, char* argv[]);
+bool show_help(void);
+bool accurate_pp(void);
+bool measure_max_frequency_flag(void);
+bool show_full_cpu_name(void);
+bool show_logo_long(void);
+bool show_logo_short(void);
+bool show_logo_intel_new(void);
+bool show_logo_intel_old(void);
+bool show_raw(void);
+bool show_debug(void);
+bool show_version(void);
+bool verbose_enabled(void);
+void free_colors_struct(struct color** cs);
+struct color** get_colors(void);
+STYLE get_style(void);
+
+#endif

src/common/ascii.h

@@ -0,0 +1,660 @@
+#ifndef __ASCII__
+#define __ASCII__
+
+#define COLOR_NONE     ""
+#define C_FG_BLACK     "\x1b[30;1m"
+#define C_FG_RED       "\x1b[31;1m"
+#define C_FG_GREEN     "\x1b[32;1m"
+#define C_FG_YELLOW    "\x1b[33;1m"
+#define C_FG_BLUE      "\x1b[34;1m"
+#define C_FG_MAGENTA   "\x1b[35;1m"
+#define C_FG_CYAN      "\x1b[36;1m"
+#define C_FG_WHITE     "\x1b[37;1m"
+#define C_BG_BLACK     "\x1b[40;1m"
+#define C_BG_RED       "\x1b[41;1m"
+#define C_BG_GREEN     "\x1b[42;1m"
+#define C_BG_YELLOW    "\x1b[43;1m"
+#define C_BG_BLUE      "\x1b[44;1m"
+#define C_BG_MAGENTA   "\x1b[45;1m"
+#define C_BG_CYAN      "\x1b[46;1m"
+#define C_BG_WHITE     "\x1b[47;1m"
+#define C_FG_B_BLACK   "\x1b[90;1m"
+#define C_FG_B_RED     "\x1b[91;1m"
+#define C_FG_B_GREEN   "\x1b[92;1m"
+#define C_FG_B_YELLOW  "\x1b[93;1m"
+#define C_FG_B_BLUE    "\x1b[94;1m"
+#define C_FG_B_MAGENTA "\x1b[95;1m"
+#define C_FG_B_CYAN    "\x1b[96;1m"
+#define C_FG_B_WHITE   "\x1b[97;1m"
+#define COLOR_RESET    "\x1b[m"
+
+struct ascii_logo {
+  char* art;
+  uint32_t width;
+  uint32_t height;
+  bool replace_blocks;
+  char color_ascii[4][100];
+  char color_text[2][100];
+};
+
+/*
+ * ASCII logos brief documentation
+ * ----------------------------------------------------
+ * C1, C2, ...: ColorN, gets replaced by printer.c with
+ *              the color in ascii_logo->color_ascii[N]
+ * CR:          Color reset, gets replaced by the reset
+ *              color by printer.c
+ *
+ * Logos with replace_blocks=true are replaced by character
+ * blocks (actually, spaces with background color), so
+ * the color in the structure must be C_BG_XXX. When
+ * replace_blocks is true, the characters '#' are replaced
+ * by spaces printed with color_ascii[0], and '@' are
+ * printed with color_ascii[1]. If replace_blocks=true,
+ * color format specified in ASCIIs ($C1, $C2) are ignored.
+ *
+ * In any case, '$' is a illegal character to be used in
+ * the ascii logos because it is used to parse colors
+ *
+ * LONG_LOGOS will be printed only if the fit in the screen,
+ * otherwise SHORT_LOGOS will be used
+ */
+
+// SHORT LOGOS //
+#define ASCII_AMD \
+"$C2          '###############             \
+$C2             ,#############            \
+$C2                      .####            \
+$C2              #.      .####            \
+$C2            :##.      .####            \
+$C2           :###.      .####            \
+$C2           #########.   :##            \
+$C2           #######.       ;            \
+$C1                                       \
+$C1    ###     ###      ###   #######     \
+$C1   ## ##    #####  #####   ##     ##   \
+$C1  ##   ##   ### #### ###   ##      ##  \
+$C1 #########  ###  ##  ###   ##      ##  \
+$C1##       ## ###      ###   ##     ##   \
+$C1##       ## ###      ###   #######     "
+
+#define ASCII_INTEL \
+"$C1                   .#################.          \
+$C1              .####                   ####.     \
+$C1          .##                             ###   \
+$C1       ##                          :##     ###  \
+$C1    #                ##            :##      ##  \
+$C1  ##   ##  ######.   ####  ######  :##      ##  \
+$C1 ##    ##  ##:  ##:  ##   ##   ### :##     ###  \
+$C1##     ##  ##:  ##:  ##  :######## :##    ##    \
+$C1##     ##  ##:  ##:  ##   ##.   .  :## ####     \
+$C1##      #  ##:  ##:  ####  #####:   ##          \
+$C1 ##                                             \
+$C1  ###.                         ..o####.         \
+$C1   ######oo...         ..oo#######              \
+$C1          o###############o                     "
+
+#define ASCII_INTEL_NEW \
+"$C1  MMM                 oddl                   MMN   \
+$C1  MMM                 dMMN                   MMN   \
+$C1  ...  ....   ...     dMMM..      .cc.       NMN   \
+$C1  MMM  :MMMdWMMMMMX.  dMMMMM,  .XMMMMMMNo    MMN   \
+$C1  MMM  :MMMp    dMMM  dMMX   .NMW      WMN.  MMN   \
+$C1  MMM  :MMM      WMM  dMMK   kMMXooooooNMMx  MMN   \
+$C1  MMM  :MMM      NMM  dMMK   dMMX            MMN   \
+$C1  MMM  :MMM      NMM  dMMMoo  OMM0....:Nx.   MMN   \
+$C1  MMM  :WWW      XWW   lONMM   'xXMMMMNOc    MMN   "
+
+#define ASCII_HYGON \
+"$C1                                                   \
+$C1                                                   \
+$C1                                                   \
+$C1 ##    ##  ##    ##  ######     ######    ##    #  \
+$C1 ##....##   ##  ##  ##        ##      ##  ####  #  \
+$C1 ########     ##    ##    ##. ##      ##  #  ####  \
+$C1 ##    ##     ##    *######.    ######    #    ##  \
+$C1                                                   \
+$C1                                                   \
+$C1                                                   \
+$C1                                                   "
+
+#define ASCII_SNAPD \
+"              $C1@@$C2########               \
+           $C1@@@@@$C2###########            \
+     $C1@@  @@@@@$C2#################        \
+   $C1@@@@@@@@@@$C2####################      \
+  $C1@@@@@@@@@@@@$C2#####################    \
+ $C1@@@@@@@@@@@@@@@$C2####################   \
+ $C1@@@@@@@@@@@@@@@@@$C2###################  \
+ $C1@@@@@@@@@@@@@@@@@@@@$C2################  \
+    $C1@@@@@@@@@@@@@@@@@@@@$C2#############  \
+       $C1@@@@@@@@@@@@@@@@@@$C2############  \
+$C1@          @@@@@@@@@@@@@@@$C2###########  \
+ $C1@@@@@       @@@@@@@@@@@@@$C2##########   \
+  $C1@@@@@@@@@   @@@@@@@@@@@@$C2########     \
+    $C1@@@@@@@@@  @@@@@@@@@@$C2#######       \
+       $C1@@@@@@@@@@@@@@@@$C2#######         \
+           $C1@@@@$C2###########             "
+
+#define ASCII_MTK \
+"$C1    ##  ## ######  ######  #     ### $C2@@@@@@ @@@@@@ @@  @@  \
+$C1   ### ### #       #    #  #    ####   $C2@@   @      @@ @@   \
+$C1  ######## # ###   #    #  #   ## ##   $C2@@   @ @@@  @@@@    \
+$C1 ## ### ## #       #    #  #  ##  ##   $C2@@   @      @@ @@   \
+$C1##  ##  ## ######  #####   # ##   ##   $C2@@   @@@@@@ @@  @@  "
+
+#define ASCII_EXYNOS \
+"$C2                      \
+$C2                      \
+$C2                      \
+     $C1##$CR  $C1##$CR  $C1##$CR       \
+       $C1##$CR  $C1##$CR         \
+         $C1##$CR           \
+       $C1##$CR  $C1##$CR         \
+     $C1##$CR  $C1##$CR  $C1##$CR       \
+$C2                      \
+$C2     SAMSUNG          \
+$C2     Exynos           \
+$C2                      \
+$C2                      "
+
+#define ASCII_KUNPENG \
+"$C2                                             .  \
+$C2                                          ..    \
+$C2                                       .##      \
+$C1                                 .$CR  $C2.###.       \
+$C1                            ..$CR   $C2#####.         \
+$C1                       .#.$CR   $C2.#######.          \
+$C1                 .####.$CR   $C2.#######.             \
+$C1           ..######*$CR  $C2.#######.   .             \
+$C1      .#########*$CR  $C2.#######*   .                \
+$C1      ######*$CR  $C2.#######.   .#.                  \
+$C1*#######*$CR   $C2.#######.   *##.                    \
+$C1    ##*$CR $C2.#######.   #######                     \
+$C2          ###.$CR $C1#####$C2   *###                     \
+$C1              *##########                       \
+$C1                    *########                   \
+$C1                          #####.                \
+$C1                             *###.              "
+
+#define ASCII_KIRIN \
+"$C1                                #######              \
+$C1    #####             ####################           \
+$C1       ######################################        \
+$C1         #######################################     \
+$C1            #######################################  \
+$C1              ##############################         \
+$C1             ##########################              \
+$C1          #########################                  \
+$C1        ########################                     \
+$C1     ########################                        \
+$C1  #########################                          \
+$C1#########################                            "
+
+#define ASCII_BROADCOM \
+"$C2                                            \
+$C2             ################               \
+$C2        ##########################          \
+$C2     ################################       \
+$C2   ################$C1@@@@$C2################     \
+$C2  ################$C1@@@@@@$C2################    \
+$C2 #################$C1@@@@@@$C2#################   \
+$C2#################$C1@@@@@@@@$C2#################  \
+$C2#################$C1@@@@@@@@$C2#################  \
+$C2################$C1@@@@$C2##$C1@@@@$C2################  \
+$C2################$C1@@@@$C2##$C1@@@@$C2################  \
+$C2###############$C1@@@@$C2####$C1@@@@$C2###############  \
+$C1 @@@@@@@@@@$C2####$C1@@@@$C2####$C1@@@@$C2####$C1@@@@@@@@@@   \
+$C2  ######$C1@@@@@@@@@@$C2######$C1@@@@@@@@@@$C2######    \
+$C2    ##################################      \
+$C2      ##############################        \
+$C2         ########################           \
+$C2             ###############                \
+$C2                                            "
+
+#define ASCII_ARM \
+"$C1   #####  ##   # #####  ## ####  ######   \
+$C1 ###    ####   ###      ####  ###   ###   \
+$C1###       ##   ###      ###    ##    ###  \
+$C1 ###    ####   ###      ###    ##    ###  \
+$C1  ######  ##   ###      ###    ##    ###  "
+
+#define ASCII_IBM \
+"$C1######## ##########   ######       ###### \
+$C1######## ###########  #######     ####### \
+$C1  ####     ###   ####   ######   ######   \
+$C1  ####     ###   ###    ####### #######   \
+$C1  ####     ########     ###############   \
+$C1  ####     ###   ###    #### ##### ####   \
+$C1  ####     ###   ####   ####  ###  ####   \
+$C1######## ###########  ######   #   ###### \
+$C1######## ##########   ######       ###### "
+
+// inspired by the neofetch mac logo
+#define ASCII_APPLE \
+"$C1                   .\"c.         \
+$C1                 ,xNMM.         \
+$C1                .lMM\"           \
+$C1                MM*             \
+$C1     .;loddo;:.   olloddol;.    \
+$C1   cKMMMMMMMMMMNWMMMMMMMMMMM0:  \
+$C1 .KMMMMMMMMMMMMMMMMMMMMMMMW*    \
+$C1 XMMMMMMMMMMMMMMMMMMMMMMMX.     \
+$C1;MMMMMMMMMMMMMMMMMMMMMMMM:      \
+$C1:MMMMMMMMMMMMMMMMMMMMMMMM:      \
+$C1.MMMMMMMMMMMMMMMMMMMMMMMMX.     \
+$C1 kMMMMMMMMMMMMMMMMMMMMMMMMWd.   \
+$C1 'XMMMMMMMMMMMMMMMMMMMMMMMMMMk  \
+$C1  'XMMMMMMMMMMMMMMMMMMMMMMMMK.  \
+$C1    kMMMMMMMMMMMMMMMMMMMMMMd    \
+$C1     'KMMMMMMMWXXWMMMMMMMk.     \
+$C1       \"cooc\"*    \"*coo'\"       "
+
+#define ASCII_GOOGLE \
+"$C1            aaaaaaaa               \
+$C1        .MMMMMMMMMMMMMMMM.         \
+$C1     .MMMMMMMMMMMMMMMMMMMMM*       \
+$C1   .MMMMMMMM**        *MM*         \
+$C2  MM$C1MMMMM.                         \
+$C2 *MMM$C1MM.                           \
+$C2*MMMMMM          $C4lMMMMMMMMMMMMMMM* \
+$C2MMMMMMM          $C4lMMMMMMMMMMMMMMMM \
+$C2*MMMMMM          $C4lMMMMMMMMMMMMMMMd \
+$C2 MMMM$C3MMM.                  $C4*MMMMM. \
+$C2  MM$C3MMMMMM.              $C4.MMMMMM.  \
+$C3   *MMMMMMMMM*.......MMM$C4MMMMMM*    \
+$C3     *MMMMMMMMMMMMMMMMMMMM$C4MM*      \
+$C3         *MMMMMMMMMMMMMM*          \
+$C3              ******               "
+
+#define ASCII_ALLWINNER \
+"$C1                                               \
+$C1                #################              \
+$C1          .########             #####    ####  \
+$C1       ######                        #######   \
+$C1    #####.    ##             ..##     ####.    \
+$C1  .####      ####          #####     ####      \
+$C1 ####       ## ###          ###.   #####  .    \
+$C1####       ##   ## ####   .###### ####*   .    \
+$C1###       ##  ##.###  ## #### .######          \
+$C1###      #.##     ###  #####   #####    .      \
+$C1###     ###        ### .###     ###    .       \
+$C1 #### ###          ####             #.         \
+$C1   ####                          #*            \
+$C1      #####                 ##.                \
+$C1            ###########.                       \
+$C1                                               "
+
+#define ASCII_ROCKCHIP \
+"$C1                                                          \
+$C1                                              $C2##          \
+$C1   ######                ##            ##                 \
+$C1  ##.  ### ##### #####  ## .## #####  ######. ##   #####  \
+$C1 #######. ##. # #.     #####  ##.    ###  ###  #     .##  \
+$C1##.  ###.  ####. #### ###  .## #### ###  ###   #.#####    \
+$C1                                                ##        \
+$C1                                                          "
+
+#define ASCII_RISCV \
+"$C1                                                               \
+$C1                                ************                   \
+$C1                    %%%%%%%%%    ***********                   \
+$C1                    %%%%%%%%%%   **********                    \
+$C1                    %%%%%%%%%    *********                     \
+$C1                    %           ********                       \
+$C1                    %%      .*********     %                   \
+$C1                    %%%%     *******     %%%                   \
+$C1                    %%%%%%.    ****    %%%%%                   \
+$C1                    %%%%%%%%.        %%%%%%%                   \
+$C1                                                               \
+$C1                                                               \
+$C1 ###########   ##   .#########    #########   .##           ## \
+$C1 ##        ##  ##  ##           ##              ###       ###  \
+$C1 ###########   ##  ##########. ##          ####  .##     ##    \
+$C1 ##     ###    ##           ##. ##                 ### ###     \
+$C1 ##       ###  ##  ##########.   ##########          ###       \
+$C1                                                               "
+
+#define ASCII_SIFIVE \
+"$C1 ############################################## \
+$C1 ###########@@@@@@@@@@@@@@@@@@@@@@@@########### \
+$C1 #########@@@@@@@@@@@@@@@@@@@@@@@@@@@@######### \
+$C1 ########@@@@######################@@@@######## \
+$C1 #######@@@@########################@@@@####### \
+$C1 ######@@@@##########################@@@@###### \
+$C1 #####@@@@#######@@@@@@@@@@@@@@@@@@@@@@@@@##### \
+$C1 ####@@@@#######@@@@@@@@@@@@@@@@@@@@@@@@@@@#### \
+$C1 ###@@@@################################@@@@### \
+$C1 ##@@@@##################################@@@@## \
+$C1 #@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#########@@@@# \
+$C1 #@@@@@@@@@@@@@@@@@@@@@@@@@@@@@###########@@@@# \
+$C1 ##@@@@@@############@@@@@@############@@@@@@## \
+$C1 ######@@@@@###########@@###########@@@@@###### \
+$C1 #########@@@@@@################@@@@@@######### \
+$C1 #############@@@@@##########@@@@@############# \
+$C1 ################@@@@@@##@@@@@@################ \
+$C1 ####################@@@@@@#################### \
+$C1 ############################################## "
+
+#define ASCII_STARFIVE \
+"$C1                   #             \
+$C1               ##########        \
+$C1          ########   ########    \
+$C1     ########              ####  \
+$C1  #######           ####         \
+$C1 ####                #######     \
+$C1 ####        #####       ####### \
+$C1  #######      ########      .## \
+$C1      ########      ########     \
+$C1 ###      ########.     #######  \
+$C1 #######       #####        #### \
+$C1     ########      #.       #### \
+$C1  #      ####           #######  \
+$C1  #####             #######      \
+$C1    ########   ########          \
+$C1         #########               \
+$C1             #                   "
+
+#define ASCII_SIPEED \
+"$C1  ####################################   \
+$C1######@@################################ \
+$C1####@@##@@####@@@@@@@@@@@@@@@@########## \
+$C1######@@####@@@@@@@@@@@@@@@@@@########## \
+$C1#########@@@@########################### \
+$C1#######@@@@@@########################### \
+$C1#########@@@@########################### \
+$C1###########@@@@@@@@@@@@@@@############## \
+$C1##############@@@@@@@@@@@@@@@########### \
+$C1###########################@@@@@######## \
+$C1###########################@@@@@@####### \
+$C1###########################@@@@@######## \
+$C1##########@@@@@@@@@@@@@@@@@@@########### \
+$C1##########@@@@@@@@@@@@@@@@############## \
+$C1######################################## \
+$C1  ####################################   "
+
+#define ASCII_NVIDIA \
+"$C1               'cccccccccccccccccccccccccc   \
+$C1               ;oooooooooooooooooooooooool   \
+$C1           .:::.     .oooooooooooooooooool   \
+$C1      .:cll;   ,c:::.     cooooooooooooool   \
+$C1   ,clo'      ;.   oolc:     ooooooooooool   \
+$C1.cloo    ;cclo .      .olc.    coooooooool   \
+$C1oooo   :lo,    ;ll;    looc    :oooooooool   \
+$C1 oooc   ool.   ;oooc;clol    :looooooooool   \
+$C1  :ooc   ,ol;  ;oooooo.   .cloo;     loool   \
+$C1    ool;   .olc.       ,:lool        .lool   \
+$C1      ool:.    ,::::ccloo.        :clooool   \
+$C1         oolc::.            ':cclooooooool   \
+$C1               ;oooooooooooooooooooooooool   \
+$C1                                             \
+$C1                                             \
+$C2######.  ##   ##  ##  ######   ##    ###     \
+$C2##   ##  ##   ##  ##  ##   ##  ##   #: :#    \
+$C2##   ##   ## ##   ##  ##   ##  ##  #######   \
+$C2##   ##    ###    ##  ######   ## ##     ##  "
+
+#define ASCII_AMPERE \
+"$C1                                                  \
+$C1                                                  \
+$C1                             ##                   \
+$C1                            ####                  \
+$C1                           ### ##                 \
+$C1                          ###   ###               \
+$C1                         ###     ###              \
+$C1                        ###        ###            \
+$C1                       ##           ###           \
+$C1                 #######   ###       ###          \
+$C1            ######  ##        ######   ###        \
+$C1        ####      ###              ########       \
+$C1      ####       ###                    ####      \
+$C1    ###         ###                       ####    \
+$C1  ##           ###                          ###   \
+$C1                                                  \
+$C1                                                  "
+
+#define ASCII_NXP \
+"$C1#####          # $C2#######      ####### $C3##########       \
+$C1#######        ## $C2#######    ####### $C3###############   \
+$C1##########     #### $C2######  ######  $C3###        ######  \
+$C1############   ##### $C2############ $C3#####         #####  \
+$C1#####  ####### #####  $C2########## $C3###################   \
+$C1#####     ######### $C2############## $C3###############     \
+$C1#####       ###### $C2######    ###### $C3####               \
+$C1#####         ## $C2######        ###### $C3##               "
+
+#define ASCII_AMLOGIC \
+"$C1      .#####.             ###                  ###        \
+$C1     ########             ###                             \
+$C1    ####..###  ########## ###   ###     #####  ###   ###  \
+$C1  .## #.  ###  ##  ##  ## ### ##   ## ##   ##  ### ##     \
+$C1 #### #.# ###  ##  ##  ## ### ##   ## ##   ##  ### ##     \
+$C1#########.###  ##  ##  ##  ##   ###    ######   ##   ###  \
+$C1                                          ###             \
+$C1                                       ###                "
+
+#define ASCII_MARVELL \
+"$C1                       ...........          ........... \
+$C1                   .###          .       .##          . \
+$C1                 .#####          .      ####          . \
+$C1                #######          .   #######          . \
+$C1             .#########__________. #########__________. \
+$C1          .###########|__________|#########|__________| \
+$C1        ############   ______############   __________  \
+$C1     .#########       |__________|######   |__________| \
+$C1   ###########         ___###########       __________  \
+$C1.##########           |__________|         |__________| "
+
+#define ASCII_SPACEMIT \
+"$C1                      :#:  \
+$C1                   :####:  \
+$C1                :#######:  \
+$C1              :#########:  \
+$C1              :#########:  \
+$C1              :#######:    \
+$C1              :####:       \
+$C1              :#:          \
+$C1:##:             :#:       \
+$C1:####:         :###:       \
+$C1:#######:     :####:       \
+$C1:##########:  :###:        \
+$C1:###########: :#:          \
+$C1:###########:              \
+$C1 :##########:              \
+$C1    :#######:              \
+$C1       :####:              \
+$C1         :##:              "
+
+// --------------------- LONG LOGOS ------------------------- //
+#define ASCII_AMD_L \
+"$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1     @@@@      @@@       @@@   @@@@@@@@      $C2  ############   \
+$C1    @@@@@@     @@@@@   @@@@@   @@@    @@@    $C2    ##########   \
+$C1   @@@  @@@    @@@@@@@@@@@@@   @@@      @@   $C2   #     #####   \
+$C1  @@@    @@@   @@@  @@@  @@@   @@@      @@   $C2 ###     #####   \
+$C1 @@@@@@@@@@@@  @@@       @@@   @@@    @@@    $C2#########  ###   \
+$C1 @@@      @@@  @@@       @@@   @@@@@@@@@     $C2########    ##   \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              \
+$C1                                                              "
+
+#define ASCII_INTEL_L \
+"$C1                               ###############@               \
+$C1                       ######@                ######@         \
+$C1                  ###@                              ###@      \
+$C1              ##@                                     ###@    \
+$C1         ##@                                             ##@  \
+$C1         ##@                                             ##@  \
+$C1      @                    ##@                ##@        ##@  \
+$C1    #@   ##@   ########@   #####@   #####@    ##@        ##@  \
+$C1   #@    ##@   ##@    ##@  ##@    ###@  ###@  ##@        ##@  \
+$C1  #@     ##@   ##@    ##@  ##@    ##@    ##@  ##@       ##@   \
+$C1 #@      ##@   ##@    ##@  ##@    #########@  ##@     ###@    \
+$C1 #@      ##@   ##@    ##@  ##@    ##@         ##@   ####@     \
+$C1 #@       #@   ##@    ##@   ####@  ########@   #@  ##@        \
+$C1 ##@                                                          \
+$C1  ##@                                                         \
+$C1  ###@                                        ###@            \
+$C1    ####@                               #########@            \
+$C1      #########@               ###############@               \
+$C1          ##############################@                     "
+
+#define ASCII_INTEL_L_NEW \
+" ####################################################### \
+ ####################################################### \
+ ####%%%#################@@@#####################@@@#### \
+ ####%%%#################@@@#####################@@@#### \
+ ########################@@@#####################@@@#### \
+ ####@@@##@@@#@@@@@@@####@@@@@@####@@@@@@@@@#####@@@#### \
+ ####@@@##@@@@@@@@@@@@###@@@@@@##@@@@#####@@@@###@@@#### \
+ ####@@@##@@@@#####@@@@##@@@####@@@@#######@@@@##@@@#### \
+ ####@@@##@@@#######@@@##@@@####@@@@@@@@@@@@@@@##@@@#### \
+ ####@@@##@@@#######@@@##@@@####@@@@#############@@@#### \
+ ####@@@##@@@#######@@@##@@@@@@##@@@@#####@@@@###@@@#### \
+ ####@@@##@@@#######@@@###@@@@@####@@@@@@@@@#####@@@#### \
+ ####################################################### \
+ ####################################################### "
+
+#define ASCII_ARM_L \
+"$C1     ############    ##########   ####  #######  ########   \
+$C1  ###############    #########    ########################  \
+$C1 ####        ####    ####         #####   ########   #####  \
+$C1####         ####    ####         ####     ######     ####  \
+$C1####         ####    ####         ####      ####      ####  \
+$C1 ####       #####    ####         ####      ####      ####  \
+$C1  ###############    ####         ####      ####      ####  \
+$C1   ########  ####    ####         ####      ####      ####  "
+
+#define ASCII_IBM_L \
+"$C1 ############ ################   ##########        ########## \
+$C1                                                              \
+$C1 ############ ################## ############    ############ \
+$C1                                                              \
+$C1    ######       ######    ######    ####################     \
+$C1                                                              \
+$C1    ######       ##############      ####################     \
+$C1                                                              \
+$C1    ######       ######    ######    #####  ######  #####     \
+$C1                                                              \
+$C1 ############ ################## #########   ####   ######### \
+$C1                                                              \
+$C1 ############ ################   #########    ##    ######### "
+
+#define ASCII_SIFIVE_L \
+"$C1 ################################################### \
+$C1 ###########@@@@@@@@@@@@@@@@@@@@@@@@@@@@############ \
+$C1 ##########@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@########### \
+$C1 #########@@@@@#######################@@@@########## \
+$C1 ########@@@@@#########################@@@@######### \
+$C1 #######@@@@@###########################@@@@######## \
+$C1 ######@@@@@########@@@@@@@@@@@@@@@@@@@@@@@@@####### \
+$C1 #####@@@@@########@@@@@@@@@@@@@@@@@@@@@@@@@@@###### \
+$C1 ####@@@@@################################@@@@@##### \
+$C1 ###@@@@@##################################@@@@@#### \
+$C1 ##@@@@@####################################@@@@@### \
+$C1 ##@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#########@@@@### \
+$C1 ##@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@############@@@@### \
+$C1 ####@@@@@#############@@@@@@@############@@@@@##### \
+$C1 #######@@@@@@############@############@@@@@@####### \
+$C1 ##########@@@@@@###################@@@@@@########## \
+$C1 ##############@@@@@@###########@@@@@@############## \
+$C1 #################@@@@@@#####@@@@@@################# \
+$C1 ####################@@@@@@@@@@@#################### \
+$C1 ########################@@@######################## \
+$C1 ################################################### "
+
+#define ASCII_STARFIVE_L \
+"$C1                          #######                 \
+$C1                     ################.            \
+$C1                ############   ###########        \
+$C1            ############           ##########.    \
+$C1       ############           #         ######    \
+$C1    ###########               #####         ##    \
+$C1   #######.                   ##########          \
+$C1  ######            ###         *###########      \
+$C1  ######            #######.         ##########   \
+$C1   #########        ############         ######   \
+$C1     ###########.        ###########*         #   \
+$C1         ############        ############         \
+$C1   #         ############.       .###########     \
+$C1   ######         ###########         #########   \
+$C1   ##########         .######,            #####   \
+$C1      ############         ##.            #####.  \
+$C1           #########                   ########   \
+$C1    ##         #####               ##########.    \
+$C1    #######        #          ############        \
+$C1    ###########           ###########.            \
+$C1        ###########. ############                 \
+$C1            ################                      \
+$C1                 #######                          "
+
+#define ASCII_NVIDIA_L \
+"$C1                  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMM  \
+$C1                  MMMMMMMMMMMMMMMMMMMMMMMMMMMMMM  \
+$C1                .::   'MMMMMMMMMMMMMMMMMMMMMMMMM  \
+$C1           ccllooo;:;.       ;MMMMMMMMMMMMMMMMMM  \
+$C1       cloc       :ooollcc:     :MMMMMMMMMMMMMMM  \
+$C1    cloc      :ccl;      lolc,     ;MMMMMMMMMMMM  \
+$C1.cloo:    :clo    ;c:      .ool;     MMMMMMMMMMM  \
+$C1  ooo:    ooo     :ool,  .cloo.    ;lMMMMMMMMMMM  \
+$C1   ooo:    ooc    :ooooccooo.    :MMMM  lMMMMMMM  \
+$C1     ooc.   ool:  :oooooo'    ,cloo.        MMMM  \
+$C1      ool:.    olc:       .:cloo.          :MMMM  \
+$C1         olc,     ;:::cccloo.          :MMMMMMMM  \
+$C1            olcc::;              ,:ccloMMMMMMMMM  \
+$C1                  :......oMMMMMMMMMMMMMMMMMMMMMM  \
+$C1                  :lllMMMMMMMMMMMMMMMMMMMMMMMMMM  "
+
+typedef struct ascii_logo asciiL;
+
+//                        +-----------------------------------------------------------------------------------------------------------------+
+//                        | LOGO             | W | H | REPLACE | COLORS LOGO (>0 && <10)                      | COLORS TEXT (=2)            |
+//                        +-----------------------------------------------------------------------------------------------------------------+
+asciiL logo_amd         = { ASCII_AMD,         39, 15, false, {C_FG_WHITE, C_FG_GREEN},                       {C_FG_WHITE,   C_FG_GREEN}   };
+asciiL logo_intel       = { ASCII_INTEL,       48, 14, false, {C_FG_CYAN},                                    {C_FG_CYAN,    C_FG_WHITE}   };
+asciiL logo_intel_new   = { ASCII_INTEL_NEW,   51,  9, false, {C_FG_CYAN},                                    {C_FG_CYAN,    C_FG_WHITE}   };
+asciiL logo_hygon       = { ASCII_HYGON,       51, 11, false, {C_FG_RED},                                     {C_FG_RED,     C_FG_WHITE}   };
+asciiL logo_snapd       = { ASCII_SNAPD,       39, 16, false, {C_FG_RED, C_FG_WHITE},                         {C_FG_RED,     C_FG_WHITE}   };
+asciiL logo_mtk         = { ASCII_MTK,         59,  5, false, {C_FG_BLUE, C_FG_YELLOW},                       {C_FG_BLUE,    C_FG_YELLOW}  };
+asciiL logo_exynos      = { ASCII_EXYNOS,      22, 13, true,  {C_BG_BLUE, C_FG_WHITE},                        {C_FG_BLUE,    C_FG_WHITE}   };
+asciiL logo_kirin       = { ASCII_KIRIN,       53, 12, false, {C_FG_RED},                                     {C_FG_WHITE,   C_FG_RED}     };
+asciiL logo_kunpeng     = { ASCII_KUNPENG,     48, 17, false, {C_FG_RED, C_FG_WHITE},                         {C_FG_WHITE,   C_FG_RED}     };
+asciiL logo_broadcom    = { ASCII_BROADCOM,    44, 19, false, {C_FG_WHITE, C_FG_RED},                         {C_FG_WHITE,   C_FG_RED}     };
+asciiL logo_arm         = { ASCII_ARM,         42,  5, false, {C_FG_CYAN},                                    {C_FG_WHITE,   C_FG_CYAN}    };
+asciiL logo_ibm         = { ASCII_IBM,         42,  9, false, {C_FG_CYAN, C_FG_WHITE},                        {C_FG_CYAN,    C_FG_WHITE}   };
+asciiL logo_apple       = { ASCII_APPLE,       32, 17, false, {C_FG_WHITE},                                   {C_FG_CYAN,    C_FG_B_WHITE} };
+asciiL logo_google      = { ASCII_GOOGLE,      35, 15, false, {C_FG_RED, C_FG_YELLOW, C_FG_GREEN, C_FG_BLUE}, {C_FG_BLUE,    C_FG_B_WHITE} };
+asciiL logo_allwinner   = { ASCII_ALLWINNER,   47, 16, false, {C_FG_CYAN},                                    {C_FG_B_BLACK, C_FG_B_CYAN } };
+asciiL logo_rockchip    = { ASCII_ROCKCHIP,    58,  8, false, {C_FG_CYAN, C_FG_YELLOW},                       {C_FG_CYAN,    C_FG_YELLOW}  };
+asciiL logo_riscv       = { ASCII_RISCV,       63, 18, false, {C_FG_CYAN, C_FG_YELLOW},                       {C_FG_CYAN,    C_FG_YELLOW}  };
+asciiL logo_sifive      = { ASCII_SIFIVE,      48, 19, true,  {C_BG_WHITE, C_BG_BLACK},                       {C_FG_WHITE,   C_FG_BLUE}    };
+asciiL logo_starfive    = { ASCII_STARFIVE,    33, 17, false, {C_FG_WHITE},                                   {C_FG_WHITE,   C_FG_BLUE}    };
+asciiL logo_sipeed      = { ASCII_SIPEED,      41, 16, true,  {C_BG_RED, C_BG_WHITE},                         {C_FG_RED,     C_FG_WHITE}   };
+asciiL logo_nvidia      = { ASCII_NVIDIA,      45, 19, false, {C_FG_GREEN, C_FG_WHITE},                       {C_FG_WHITE,   C_FG_GREEN}   };
+asciiL logo_ampere      = { ASCII_AMPERE,      50, 17, false, {C_FG_RED},                                     {C_FG_WHITE,   C_FG_RED}     };
+asciiL logo_nxp         = { ASCII_NXP,         55,  8, false, {C_FG_YELLOW, C_FG_CYAN, C_FG_GREEN},           {C_FG_CYAN,    C_FG_WHITE}   };
+asciiL logo_amlogic     = { ASCII_AMLOGIC,     58,  8, false, {C_FG_BLUE},                                    {C_FG_BLUE,    C_FG_B_WHITE} };
+asciiL logo_marvell     = { ASCII_MARVELL,     56, 10, false, {C_FG_B_BLACK},                                 {C_FG_B_BLACK, C_FG_B_WHITE} };
+asciiL logo_spacemit    = { ASCII_SPACEMIT,    27, 18, false, {C_FG_B_GREEN},                                 {C_FG_B_GREEN, C_FG_B_WHITE} };
+
+// Long variants          | ----------------------------------------------------------------------------------------------------------------|
+asciiL logo_amd_l       = { ASCII_AMD_L,       62, 19, true,  {C_BG_WHITE, C_BG_GREEN},                       {C_FG_WHITE, C_FG_GREEN}     };
+asciiL logo_intel_l     = { ASCII_INTEL_L,     62, 19, true,  {C_BG_CYAN, C_BG_WHITE},                        {C_FG_CYAN,  C_FG_WHITE}     };
+asciiL logo_intel_l_new = { ASCII_INTEL_L_NEW, 57, 14, true,  {C_BG_CYAN, C_BG_WHITE, C_BG_BLUE},             {C_FG_CYAN,  C_FG_WHITE}     };
+asciiL logo_arm_l       = { ASCII_ARM_L,       60,  8, true,  {C_BG_CYAN},                                    {C_FG_WHITE, C_FG_CYAN}      };
+asciiL logo_ibm_l       = { ASCII_IBM_L,       62, 13, true,  {C_BG_CYAN, C_FG_WHITE},                        {C_FG_CYAN,  C_FG_WHITE}     };
+asciiL logo_starfive_l  = { ASCII_STARFIVE_L,  50, 22, false, {C_FG_WHITE},                                   {C_FG_WHITE, C_FG_BLUE}      };
+asciiL logo_sifive_l    = { ASCII_SIFIVE_L,    53, 21, true,  {C_BG_WHITE, C_BG_BLACK},                       {C_FG_WHITE, C_FG_CYAN}      };
+asciiL logo_nvidia_l    = { ASCII_NVIDIA_L,    50, 15, false, {C_FG_GREEN, C_FG_WHITE},                       {C_FG_WHITE, C_FG_GREEN}     };
+asciiL logo_unknown     = { NULL,               0,  0, false, {COLOR_NONE},                                   {COLOR_NONE, COLOR_NONE}     };
+
+#endif

src/common/cpu.c

@@ -0,0 +1,256 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stdbool.h>
+
+#include "../common/global.h"
+#include "cpu.h"
+
+#ifdef ARCH_X86
+  #include "../x86/uarch.h"
+  #include "../x86/apic.h"
+#elif ARCH_PPC
+  #include "../ppc/uarch.h"
+#elif ARCH_ARM
+  #include "../arm/uarch.h"
+#elif ARCH_RISCV
+  #include "../riscv/uarch.h"
+#endif
+
+#define STRING_YES        "Yes"
+#define STRING_NO         "No"
+#define STRING_NONE       "None"
+#define STRING_MEGAHERZ   "MHz"
+#define STRING_GIGAHERZ   "GHz"
+#define STRING_KILOBYTES  "KB"
+#define STRING_MEGABYTES  "MB"
+
+VENDOR get_cpu_vendor(struct cpuInfo* cpu) {
+  return cpu->cpu_vendor;
+}
+
+int64_t get_freq(struct frequency* freq) {
+  return freq->max;
+}
+
+#ifdef ARCH_X86
+int64_t get_freq_pp(struct frequency* freq) {
+  return freq->max_pp;
+}
+#endif
+
+#if defined(ARCH_X86) || defined(ARCH_PPC)
+char* get_str_cpu_name(struct cpuInfo* cpu, bool fcpuname) {
+  #ifdef ARCH_X86
+  if(!fcpuname) {
+    return get_str_cpu_name_abbreviated(cpu);
+  }
+  #elif ARCH_PPC
+  UNUSED(fcpuname);
+  #endif
+  return cpu->cpu_name;
+}
+
+char* get_str_sockets(struct topology* topo) {
+  char* string = emalloc(sizeof(char) * 2);
+  int32_t sanity_ret = snprintf(string, 2, "%d", topo->sockets);
+  if(sanity_ret < 0) {
+    printBug("get_str_sockets: snprintf returned a negative value for input: '%d'", topo->sockets);
+    return NULL;
+  }
+  return string;
+}
+
+uint32_t get_nsockets(struct topology* topo) {
+  return topo->sockets;
+}
+#endif
+
+int32_t get_value_as_smallest_unit(char ** str, uint32_t value) {
+  int32_t ret;
+  int max_len = 10; // Max is 8 for digits, 2 for units
+  *str = emalloc(sizeof(char)* (max_len + 1));
+
+  if(value/1024 >= 1024)
+    ret = snprintf(*str, max_len, "%.4g"STRING_MEGABYTES, (double)value/(1<<20));
+  else
+    ret = snprintf(*str, max_len, "%.4g"STRING_KILOBYTES, (double)value/(1<<10));
+
+  return ret;
+}
+
+// String functions
+char* get_str_cache_two(int32_t cache_size, uint32_t physical_cores) {
+  char* tmp1;
+  char* tmp2;
+  int32_t tmp1_len = get_value_as_smallest_unit(&tmp1, cache_size);
+  int32_t tmp2_len = get_value_as_smallest_unit(&tmp2, cache_size * physical_cores);
+
+  // tmp1_len for first output, 2 for ' (', tmp2_len for second output and 7 for ' Total)'
+  uint32_t size = tmp1_len + 2 + tmp2_len + 7 + 1;
+  char* string = emalloc(sizeof(char) * size);
+
+  if(tmp1_len < 0) {
+    printBug("get_value_as_smallest_unit: snprintf failed for input: %d\n", cache_size);
+    return NULL;
+  }
+  if(tmp2_len < 0) {
+    printBug("get_value_as_smallest_unit: snprintf failed for input: %d\n", cache_size * physical_cores);
+    return NULL;
+  }
+
+  if(snprintf(string, size, "%s (%s Total)", tmp1, tmp2) < 0) {
+    printBug("get_str_cache_two: snprintf failed for input: '%s' and '%s'\n", tmp1, tmp2);
+    return NULL;
+  }
+
+  free(tmp1);
+  free(tmp2);
+
+  return string;
+}
+
+char* get_str_cache_one(int32_t cache_size) {
+  char* string;
+  int32_t str_len = get_value_as_smallest_unit(&string, cache_size);
+
+  if(str_len < 0) {
+    printBug("get_value_as_smallest_unit: snprintf failed for input: %d", cache_size);
+    return NULL;
+  }
+
+  return string;
+}
+
+char* get_str_cache(int32_t cache_size, int32_t num_caches) {
+  if(num_caches > 1)
+    return get_str_cache_two(cache_size, num_caches);
+  else
+    return get_str_cache_one(cache_size);
+}
+
+char* get_str_l1i(struct cache* cach) {
+  return get_str_cache(cach->L1i->size, cach->L1i->num_caches);
+}
+
+char* get_str_l1d(struct cache* cach) {
+  return get_str_cache(cach->L1d->size, cach->L1d->num_caches);
+}
+
+char* get_str_l2(struct cache* cach) {
+  assert(cach->L2->exists);
+  return get_str_cache(cach->L2->size, cach->L2->num_caches);
+}
+
+char* get_str_l3(struct cache* cach) {
+  if(!cach->L3->exists)
+    return NULL;
+  return get_str_cache(cach->L3->size, cach->L3->num_caches);
+}
+
+char* get_str_freq(struct frequency* freq) {
+  //Max 3 digits and 3 for '(M/G)Hz' plus 1 for '\0'
+  uint32_t size = (1+5+1+3+1);
+  assert(strlen(STRING_UNKNOWN)+1 <= size);
+  char* string = ecalloc(size, sizeof(char));
+
+  if(freq->max == UNKNOWN_DATA || freq->max < 0) {
+    snprintf(string,strlen(STRING_UNKNOWN)+1,STRING_UNKNOWN);
+  }
+  else if(freq->max >= 1000) {
+    if (freq->measured)
+      snprintf(string,size,"~%.3f "STRING_GIGAHERZ,(float)(freq->max)/1000);
+    else
+      snprintf(string,size,"%.3f "STRING_GIGAHERZ,(float)(freq->max)/1000);
+  }
+  else {
+    if (freq->measured)
+      snprintf(string,size,"~%d "STRING_MEGAHERZ,freq->max);
+    else
+      snprintf(string,size,"%d "STRING_MEGAHERZ,freq->max);
+  }
+
+  return string;
+}
+
+char* get_str_peak_performance(int64_t flops) {
+  char* str;
+
+  if(flops == -1) {
+    str = emalloc(sizeof(char) * (strlen(STRING_UNKNOWN) + 1));
+    strncpy(str, STRING_UNKNOWN, strlen(STRING_UNKNOWN) + 1);
+    return str;
+  }
+
+  // 7 for digits (e.g, XXXX.XX), 7 for XFLOP/s
+  double flopsd = (double) flops;
+  uint32_t max_size = 7+1+7+1;
+  str = ecalloc(max_size, sizeof(char));
+
+  if(flopsd >= (double)1000000000000.0)
+    snprintf(str, max_size, "%.2f TFLOP/s", flopsd/1000000000000);
+  else if(flopsd >= 1000000000.0)
+    snprintf(str, max_size, "%.2f GFLOP/s", flopsd/1000000000);
+  else
+    snprintf(str, max_size, "%.2f MFLOP/s", flopsd/1000000);
+
+  return str;
+}
+
+void init_topology_struct(struct topology* topo, struct cache* cach) {
+  topo->total_cores = 0;
+  topo->cach = cach;
+#if defined(ARCH_X86) || defined(ARCH_PPC)
+  topo->physical_cores = 0;
+  topo->logical_cores = 0;
+  topo->smt_supported = 0;
+  topo->sockets = 0;
+#ifdef ARCH_X86
+  topo->smt_available = 0;
+  topo->apic = ecalloc(1, sizeof(struct apic));
+#endif
+#endif
+}
+
+void init_cache_struct(struct cache* cach) {
+  cach->L1i = emalloc(sizeof(struct cach));
+  cach->L1d = emalloc(sizeof(struct cach));
+  cach->L2 = emalloc(sizeof(struct cach));
+  cach->L3 = emalloc(sizeof(struct cach));
+
+  cach->cach_arr = emalloc(sizeof(struct cach*) * 4);
+  cach->cach_arr[0] = cach->L1i;
+  cach->cach_arr[1] = cach->L1d;
+  cach->cach_arr[2] = cach->L2;
+  cach->cach_arr[3] = cach->L3;
+
+  cach->max_cache_level = 0;
+  cach->L1i->exists = false;
+  cach->L1d->exists = false;
+  cach->L2->exists = false;
+  cach->L3->exists = false;
+}
+
+void free_cache_struct(struct cache* cach) {
+  for(int i=0; i < 4; i++) free(cach->cach_arr[i]);
+  free(cach->cach_arr);
+  free(cach);
+}
+
+void free_freq_struct(struct frequency* freq) {
+  free(freq);
+}
+
+void free_hv_struct(struct hypervisor* hv) {
+  free(hv);
+}
+
+void free_cpuinfo_struct(struct cpuInfo* cpu) {
+  free_uarch_struct(cpu->arch);
+  free_hv_struct(cpu->hv);
+  #ifdef ARCH_X86
+  free(cpu->cpu_name);
+  #endif
+  free(cpu);
+}

src/common/cpu.h

@@ -0,0 +1,231 @@
+#ifndef __CPU__
+#define __CPU__
+
+#include <stdint.h>
+#include <stdbool.h>
+
+enum {
+// ARCH_X86
+  CPU_VENDOR_INTEL,
+  CPU_VENDOR_AMD,
+  CPU_VENDOR_HYGON,
+// ARCH_ARM
+  CPU_VENDOR_ARM,
+  CPU_VENDOR_APPLE,
+  CPU_VENDOR_BROADCOM,
+  CPU_VENDOR_CAVIUM,
+  CPU_VENDOR_NVIDIA,
+  CPU_VENDOR_APM,
+  CPU_VENDOR_QUALCOMM,
+  CPU_VENDOR_HUAWEI,
+  CPU_VENDOR_SAMSUNG,
+  CPU_VENDOR_MARVELL,
+  CPU_VENDOR_PHYTIUM,
+// ARCH_RISCV
+  CPU_VENDOR_RISCV,
+  CPU_VENDOR_SIFIVE,
+  CPU_VENDOR_THEAD,
+  CPU_VENDOR_SPACEMIT,
+// OTHERS
+  CPU_VENDOR_UNKNOWN,
+  CPU_VENDOR_INVALID
+};
+
+enum {
+  HV_VENDOR_KVM,
+  HV_VENDOR_QEMU,
+  HV_VENDOR_VBOX,
+  HV_VENDOR_HYPERV,
+  HV_VENDOR_VMWARE,
+  HV_VENDOR_XEN,
+  HV_VENDOR_PARALLELS,
+  HV_VENDOR_PHYP,
+  HV_VENDOR_BHYVE,
+  HV_VENDOR_APPLEVZ,
+  HV_VENDOR_INVALID
+};
+
+enum {
+  CORE_TYPE_EFFICIENCY,
+  CORE_TYPE_PERFORMANCE,
+  CORE_TYPE_UNKNOWN
+};
+
+#define UNKNOWN_DATA -1
+#define CPU_NAME_MAX_LENGTH 64
+
+typedef int32_t VENDOR;
+
+struct frequency {
+  int32_t base;
+  int32_t max;
+  // Indicates if max frequency was measured
+  bool measured;
+#ifdef ARCH_X86
+  // Max frequency when running vectorized code.
+  // Used only for peak performance computation.
+  int32_t max_pp;
+#endif
+};
+
+struct hypervisor {
+  bool present;
+  char* hv_name;
+  VENDOR hv_vendor;
+};
+
+struct cach {
+  int32_t size;
+  uint8_t num_caches;
+  bool exists;
+  // plenty of more properties to include in the future...
+};
+
+struct cache {
+  struct cach* L1i;
+  struct cach* L1d;
+  struct cach* L2;
+  struct cach* L3;
+  struct cach** cach_arr;
+
+  uint8_t max_cache_level;
+};
+
+struct topology {
+  int32_t total_cores;  
+  struct cache* cach;
+#if defined(ARCH_X86) || defined(ARCH_PPC)
+  int32_t physical_cores;
+  int32_t logical_cores;
+  uint32_t sockets;
+  uint32_t smt_supported; // Number of SMT that CPU supports (equal to smt_available if SMT is enabled)
+#ifdef ARCH_X86
+  uint32_t smt_available; // Number of SMT that is currently enabled
+  int32_t total_cores_module; // Total cores in the current module (only makes sense in hybrid archs, like ADL)
+  struct apic* apic;
+#endif
+#endif
+};
+
+struct features {
+  bool AES; // Must be the first field of features struct!  
+#ifdef ARCH_X86
+  bool AVX;
+  bool AVX2;
+  bool AVX512;
+  bool SSE;
+  bool SSE2;
+  bool SSE3;
+  bool SSSE3;
+  bool SSE4a;
+  bool SSE4_1;
+  bool SSE4_2;
+  bool FMA3;
+  bool FMA4;
+  bool SHA;
+#elif ARCH_PPC
+  bool altivec;
+#elif ARCH_ARM
+  bool NEON;  
+  bool SHA1;
+  bool SHA2;
+  bool CRC32;
+  bool SVE;
+  bool SVE2;
+  uint64_t cntb;
+#endif  
+};
+
+struct extensions {
+  char* str;
+  bool* mask; // allocated at runtime with size RISCV_ISA_EXT_ID_MAX
+};
+
+struct cpuInfo {
+  VENDOR cpu_vendor;
+  struct uarch* arch;
+  struct hypervisor* hv;
+  struct frequency* freq;
+  struct cache* cach;
+  struct topology* topo;
+  int64_t peak_performance;
+
+  // Similar but not exactly equal
+  // to struct features
+#ifdef ARCH_RISCV
+  struct extensions* ext;
+#else
+  struct features* feat;
+#endif
+
+#if defined(ARCH_X86) || defined(ARCH_PPC)
+  // CPU name from model
+  char* cpu_name;
+#endif
+
+#ifdef ARCH_X86
+  //  Max cpuids levels
+  uint32_t maxLevels;
+  // Max cpuids extended levels
+  uint32_t maxExtendedLevels;
+  // Topology Extensions (AMD only)
+  bool topology_extensions;
+  // Hybrid Flag (Intel only)
+  bool hybrid_flag;
+  // Core Type (P/E)
+  uint32_t core_type;
+#elif ARCH_PPC
+  uint32_t pvr;
+#elif ARCH_ARM
+  // Main ID register
+  uint32_t midr;
+#endif
+
+#if defined(ARCH_ARM) || defined(ARCH_RISCV)
+  struct system_on_chip* soc;
+#endif
+
+#if defined(ARCH_X86) || defined(ARCH_ARM)
+  // If SoC contains more than one CPU and they
+  // are different, the others will be stored in
+  // the next_cpu field
+  struct cpuInfo* next_cpu;
+  uint8_t num_cpus;
+#ifdef ARCH_X86
+  // The index of the first core in the module
+  uint32_t first_core_id;
+  // The index of this module
+  uint32_t module_id;
+#endif
+#endif
+};
+
+#if defined(ARCH_X86) || defined(ARCH_PPC)
+char* get_str_cpu_name(struct cpuInfo* cpu, bool fcpuname);
+char* get_str_sockets(struct topology* topo);
+uint32_t get_nsockets(struct topology* topo);
+#endif
+
+VENDOR get_cpu_vendor(struct cpuInfo* cpu);
+int64_t get_freq(struct frequency* freq);
+#ifdef ARCH_X86
+int64_t get_freq_pp(struct frequency* freq);
+#endif
+
+char* get_str_aes(struct cpuInfo* cpu);
+char* get_str_sha(struct cpuInfo* cpu);
+char* get_str_l1i(struct cache* cach);
+char* get_str_l1d(struct cache* cach);
+char* get_str_l2(struct cache* cach);
+char* get_str_l3(struct cache* cach);
+char* get_str_freq(struct frequency* freq);
+char* get_str_peak_performance(int64_t flops);
+
+void init_topology_struct(struct topology* topo, struct cache* cach);
+void init_cache_struct(struct cache* cach);
+
+void free_cache_struct(struct cache* cach);
+void free_freq_struct(struct frequency* freq);
+void free_cpuinfo_struct(struct cpuInfo* cpu);
+
+#endif

src/common/freq.c

@@ -0,0 +1,195 @@
+#ifdef __linux__
+
+#define _GNU_SOURCE
+
+#include <time.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <asm/unistd.h>
+#include <sys/ioctl.h>
+#include <linux/perf_event.h>
+
+#include "global.h"
+#include "cpu.h"
+
+static long
+perf_event_open(struct perf_event_attr *hw_event, pid_t pid,
+                int cpu, int group_fd, unsigned long flags) {
+    int ret;
+    ret = syscall(__NR_perf_event_open, hw_event, pid, cpu,
+                    group_fd, flags);
+    return ret;
+}
+
+#define INSERT_ASM_ONCE __asm volatile("nop");
+#define INSERT_ASM_10_TIMES \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+    INSERT_ASM_ONCE         \
+
+#define INSERT_ASM_100_TIMES \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES      \
+    INSERT_ASM_10_TIMES
+
+#define INSERT_ASM_1000_TIMES \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+    INSERT_ASM_100_TIMES     \
+
+void nop_function(uint64_t iters) {
+  for (uint64_t i = 0; i < iters; i++) {
+    INSERT_ASM_1000_TIMES
+    INSERT_ASM_1000_TIMES
+    INSERT_ASM_1000_TIMES
+    INSERT_ASM_1000_TIMES
+  }
+}
+
+// Run the nop_function with the number of iterations specified and
+// measure both the time and number of cycles
+int measure_freq_iters(uint64_t iters, uint32_t core, double* freq) {
+  clockid_t clock = CLOCK_PROCESS_CPUTIME_ID;
+  struct timespec start, end;
+  struct perf_event_attr pe;
+  uint64_t cycles;
+  int fd;
+  int pid = 0;
+  memset(&pe, 0, sizeof(struct perf_event_attr));
+  pe.type = PERF_TYPE_HARDWARE;
+  pe.size = sizeof(struct perf_event_attr);
+  pe.config = PERF_COUNT_HW_CPU_CYCLES;
+  pe.disabled = 1;
+  pe.exclude_kernel = 1;
+  pe.exclude_hv = 1;
+
+  fd = perf_event_open(&pe, pid, core, -1, 0);
+  if (fd == -1) {
+    perror("perf_event_open");
+    if (errno == EPERM || errno == EACCES) {
+      printErr("You may not have permission to collect stats.\n"\
+      "Consider tweaking /proc/sys/kernel/perf_event_paranoid or running as root");
+    }
+    return -1;
+  }
+
+  if (clock_gettime(clock, &start) == -1) {
+    perror("clock_gettime");
+    return -1;
+  }
+  if(ioctl(fd, PERF_EVENT_IOC_RESET, 0) == -1) {
+    perror("ioctl");
+    return -1;
+  }
+  if(ioctl(fd, PERF_EVENT_IOC_ENABLE, 0) == -1) {
+    perror("ioctl");
+    return -1;
+  }
+
+  nop_function(iters);
+
+  ssize_t ret = read(fd, &cycles, sizeof(uint64_t));
+  if (ret == -1) {
+    perror("read");
+    return -1;
+  }
+  if (ret != sizeof(uint64_t)) {
+    printErr("Read returned %d, expected %d", ret, sizeof(uint64_t));
+    return -1;
+  }
+  if(ioctl(fd, PERF_EVENT_IOC_DISABLE, 0) == -1) {
+    perror("ioctl");
+    return -1;
+  }
+  if (clock_gettime(clock, &end) == -1) {
+    perror("clock_gettime");
+    return -1;
+  }
+
+  uint64_t nsecs = (end.tv_sec*1e9 + end.tv_nsec) - (start.tv_sec*1e9 + start.tv_nsec);
+  uint64_t usecs = nsecs/1000;  
+  *freq = cycles/((double)usecs);
+  return 0;
+}
+
+// Return a good number of iterations to run the nop_function in
+// order to get a precise measurement of the frequency without taking
+// too much time.
+uint64_t get_num_iters_from_freq(double frequency) {
+  // Truncate to reduce variability
+  uint64_t freq_trunc = ((uint64_t) frequency / 100) * 100;
+  uint64_t osp_per_iter = 4 * 1000;
+
+  return freq_trunc * 1e7 * 1/osp_per_iter;
+}
+
+// Differences between x86 measure_frequency and this measure_max_frequency:
+// - measure_frequency employs all cores simultaneously whereas
+//   measure_max_frequency only employs 1.
+// - measure_frequency runs the computation and checks /proc/cpuinfo whereas
+//   measure_max_frequency does not rely on /proc/cpuinfo and simply
+//   counts cpu cycles to measure frequency.
+// - measure_frequency uses actual computation while measuring the frequency
+//   whereas measure_max_frequency uses nop instructions. This makes the former
+//   x86 dependant whereas the latter is architecture independant.
+int64_t measure_max_frequency(uint32_t core) {
+  if (!bind_to_cpu(core)) {
+    printErr("Failed binding the process to CPU %d", core);
+    return UNKNOWN_DATA;
+  }
+
+  // First, get very rough estimation of clock cycle to
+  // compute a reasonable value for the iterations
+  double estimation_freq, frequency;
+  uint64_t iters = 100000;
+  if (measure_freq_iters(iters, core, &estimation_freq) == -1)
+    return UNKNOWN_DATA;
+
+  if (estimation_freq <= 0.0) {
+    printErr("First frequency measurement yielded an invalid value: %f", estimation_freq);
+    return UNKNOWN_DATA;
+  }
+  iters = get_num_iters_from_freq(estimation_freq);
+  printWarn("Running frequency measurement with %ld iterations on core %d...", iters, core);
+
+  // Now perform actual measurement
+  const char* frequency_banner = "cpufetch is measuring the max frequency...";
+  printf("%s", frequency_banner);
+  fflush(stdout);
+
+  if (measure_freq_iters(iters, core, &frequency) == -1)
+    return UNKNOWN_DATA;
+  
+  // Clean screen once measurement is finished
+  printf("\r%*c\r", (int) strlen(frequency_banner), ' ');
+  
+  // Discard last digit in the frequency, which should help providing
+  // more reliable and predictable values.
+  return (((int) frequency + 5)/10) * 10;
+}
+
+#endif // #ifdef __linux__

src/common/freq.h

@@ -0,0 +1,6 @@
+#ifndef __COMMON_FREQ__
+#define __COMMON_FREQ__
+
+int64_t measure_max_frequency(uint32_t core);
+
+#endif

src/common/global.c

@@ -0,0 +1,247 @@
+#ifdef _WIN32
+  #define NOMINMAX
+  #include <windows.h>
+#elif defined __linux__
+  #define _GNU_SOURCE
+  #include <sched.h>
+#elif defined __FreeBSD__
+  #include <sys/param.h>
+  #include <sys/cpuset.h>
+#endif
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "global.h"
+
+#ifdef _WIN32
+
+#define RED   ""
+#define BOLD  ""
+#define RESET ""
+
+#else
+
+#define RED "\x1b[31;1m"
+#define BOLD "\x1b[;1m"
+#define RESET "\x1b[0m"
+
+#endif
+
+#ifdef ARCH_X86
+  static const char* ARCH_STR = "x86 / x86_64 build";
+  #include "../x86/cpuid.h"
+#elif ARCH_PPC
+  static const char* ARCH_STR = "PowerPC build";
+  #include "../ppc/ppc.h"
+#elif ARCH_ARM
+  static const char* ARCH_STR = "ARM build";
+  #include "../arm/midr.h"
+#elif ARCH_RISCV
+  static const char* ARCH_STR = "RISC-V build";
+  #include "../riscv/riscv.h"
+#endif
+
+#ifdef __linux__
+  #ifdef __ANDROID__
+    static const char* OS_STR = "Android";
+  #else
+    static const char* OS_STR = "Linux";
+  #endif
+#elif __FreeBSD__
+  static const char* OS_STR = "FreeBSD";
+#elif _WIN32
+  static const char* OS_STR = "Windows";
+#elif defined __APPLE__ || __MACH__
+  static const char* OS_STR = "macOS";
+#else
+  static const char* OS_STR = "Unknown OS";
+#endif
+
+#ifndef GIT_FULL_VERSION
+  static const char* VERSION = "1.07";
+#endif
+
+enum {
+  LOG_LEVEL_NORMAL,
+  LOG_LEVEL_VERBOSE
+};
+
+int LOG_LEVEL;
+
+void printBugMessage(FILE *restrict stream) {
+  #if defined(ARCH_X86) || defined(ARCH_PPC)
+    fprintf(stream, "Please, create a new issue with this error message, the output of 'cpufetch' and 'cpufetch --debug' on https://github.com/Dr-Noob/cpufetch/issues\n");
+  #elif ARCH_ARM
+    fprintf(stream, "Please, create a new issue with this error message, your smartphone/computer model, the output of 'cpufetch --verbose' and 'cpufetch --debug' on https://github.com/Dr-Noob/cpufetch/issues\n");
+  #endif
+}
+
+void printWarn(const char *fmt, ...) {
+  if(LOG_LEVEL == LOG_LEVEL_VERBOSE) {
+    int buffer_size = 4096;
+    char buffer[buffer_size];
+    va_list args;
+    va_start(args, fmt);
+    vsnprintf(buffer,buffer_size, fmt, args);
+    va_end(args);
+    fprintf(stderr,BOLD "[WARNING]: "RESET "%s\n",buffer);
+  }
+}
+
+void printErr(const char *fmt, ...) {
+  int buffer_size = 4096;
+  char buffer[buffer_size];
+  va_list args;
+  va_start(args, fmt);
+  vsnprintf(buffer,buffer_size, fmt, args);
+  va_end(args);
+  fprintf(stderr,RED "[ERROR]: "RESET "%s\n",buffer);
+  fprintf(stderr,"[VERSION]: ");
+  print_version(stderr);
+}
+
+void printBug(const char *fmt, ...) {
+  int buffer_size = 4096;
+  char buffer[buffer_size];
+  va_list args;
+  va_start(args, fmt);
+  vsnprintf(buffer,buffer_size, fmt, args);
+  va_end(args);
+  fprintf(stderr,RED "[ERROR]: "RESET "%s\n",buffer);
+  fprintf(stderr,"[VERSION]: ");
+  print_version(stderr);
+  printBugMessage(stderr);
+}
+
+bool isReleaseVersion(char *git_full_version) {
+  return strstr(git_full_version, "-") == NULL;
+}
+
+/// The unknown uarch errors are by far the most common error a user will encounter.
+/// Rather than using the generic printBug function, which asks the user to report
+/// the problem on the issues webpage, this function will check if the program is
+/// the release version. In such case, support for this feature is most likely already
+/// in the last version, so just tell the user to compile that one and not report this
+/// in github.
+void printBugCheckRelease(const char *fmt, ...) {
+  int buffer_size = 4096;
+  char buffer[buffer_size];
+  va_list args;
+  va_start(args, fmt);
+  vsnprintf(buffer,buffer_size, fmt, args);
+  va_end(args);
+
+  fprintf(stderr, RED "[ERROR]: "RESET "%s\n", buffer);
+  fprintf(stderr, "[VERSION]: ");
+  print_version(stderr);
+
+#ifdef GIT_FULL_VERSION
+  if (isReleaseVersion(GIT_FULL_VERSION)) {
+    fprintf(stderr, RED "[ERROR]: "RESET "You are using an outdated version of cpufetch. Please compile cpufetch from source (see https://github.com/Dr-Noob/cpufetch?tab=readme-ov-file#22-building-from-source)");
+  }
+  else {
+    printBugMessage(stderr);
+  }
+#else
+  printBugMessage(stderr);
+#endif
+}
+
+void set_log_level(bool verbose) {
+  if(verbose) LOG_LEVEL = LOG_LEVEL_VERBOSE;
+  else LOG_LEVEL = LOG_LEVEL_NORMAL;
+}
+
+int max(int a, int b) {
+  return a > b ? a : b;
+}
+
+int min(int a, int b) {
+  return a < b ? a : b;
+}
+
+char *strremove(char *str, const char *sub) {
+  char *p, *q, *r;
+  if (*sub && (q = r = strstr(str, sub)) != NULL) {
+    size_t len = strlen(sub);
+    while ((r = strstr(p = r + len, sub)) != NULL) {
+      memmove(q, p, r - p);
+      q += r - p;
+    }
+    memmove(q, p, strlen(p) + 1);
+  }
+  return str;
+}
+
+void* emalloc(size_t size) {
+  void* ptr = malloc(size);
+
+  if(ptr == NULL) {
+    printErr("malloc failed: %s", strerror(errno));
+    exit(1);
+  }
+
+  return ptr;
+}
+
+void* ecalloc(size_t nmemb, size_t size) {
+  void* ptr = calloc(nmemb, size);
+
+  if(ptr == NULL) {
+    printErr("calloc failed: %s", strerror(errno));
+    exit(1);
+  }
+
+  return ptr;
+}
+
+void* erealloc(void *ptr, size_t size) {
+  void* newptr = realloc(ptr, size);
+
+  if(newptr == NULL) {
+    printErr("realloc failed: %s", strerror(errno));
+    exit(1);
+  }
+
+  return newptr;
+}
+
+#ifndef __APPLE__
+bool bind_to_cpu(int cpu_id) {
+  #ifdef _WIN32
+    HANDLE process = GetCurrentProcess();
+    DWORD_PTR processAffinityMask = 1 << cpu_id;
+    return SetProcessAffinityMask(process, processAffinityMask);
+  #elif defined __linux__
+    cpu_set_t currentCPU;
+    CPU_ZERO(&currentCPU);
+    CPU_SET(cpu_id, &currentCPU);
+    if (sched_setaffinity (0, sizeof(currentCPU), &currentCPU) == -1) {
+      printWarn("sched_setaffinity: %s", strerror(errno));
+      return false;
+    }
+    return true;
+  #elif defined __FreeBSD__
+    cpuset_t currentCPU;
+    CPU_ZERO(&currentCPU);
+    CPU_SET(cpu_id, &currentCPU);
+    if(cpuset_setaffinity(CPU_LEVEL_WHICH, CPU_WHICH_TID, -1, sizeof(cpuset_t), &currentCPU) == -1) {
+      printWarn("cpuset_setaffinity: %s", strerror(errno));
+      return false;
+    }
+    return true;
+  #endif
+}
+#endif
+
+void print_version(FILE *restrict stream) {
+#ifdef GIT_FULL_VERSION
+  fprintf(stream, "cpufetch %s (%s %s)\n", GIT_FULL_VERSION, OS_STR, ARCH_STR);
+#else
+  fprintf(stream, "cpufetch v%s (%s %s)\n", VERSION, OS_STR, ARCH_STR);
+#endif
+}

src/common/global.h

@@ -0,0 +1,27 @@
+#ifndef __GLOBAL__
+#define __GLOBAL__
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#define STRING_UNKNOWN "Unknown"
+#define UNUSED(x) (void)(x)
+
+void set_log_level(bool verbose);
+void printWarn(const char *fmt, ...);
+void printErr(const char *fmt, ...);
+void printBug(const char *fmt, ...);
+void printBugCheckRelease(const char *fmt, ...);
+int min(int a, int b);
+int max(int a, int b);
+char *strremove(char *str, const char *sub);
+void* emalloc(size_t size);
+void* ecalloc(size_t nmemb, size_t size);
+void* erealloc(void *ptr, size_t size);
+#ifndef __APPLE__
+bool bind_to_cpu(int cpu_id);
+#endif
+void print_version(FILE *restrict stream);
+
+#endif

src/common/main.c

@@ -0,0 +1,140 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "args.h"
+#include "printer.h"
+#include "global.h"
+
+void print_help(char *argv[]) {
+  const char **t = args_str;
+  const char *c = args_chr;
+  int max_len = max_arg_str_length();
+
+  printf("Usage: %s [OPTION]...\n", argv[0]);
+  printf("Simple yet fancy CPU architecture fetching tool\n\n");
+
+  printf("OPTIONS: \n");
+  printf("  -%c, --%s %*s Set the color scheme (by default, cpufetch uses the system color scheme)\n", c[ARG_COLOR], t[ARG_COLOR], (int) (max_len-strlen(t[ARG_COLOR])), "");
+  printf("  -%c, --%s %*s Set the style of CPU logo\n", c[ARG_STYLE], t[ARG_STYLE], (int) (max_len-strlen(t[ARG_STYLE])), "");
+#ifdef ARCH_X86
+  printf("  -%c, --%s %*s Print CPU model and cpuid levels (debug purposes)\n", c[ARG_DEBUG], t[ARG_DEBUG], (int) (max_len-strlen(t[ARG_DEBUG])), "");
+#elif ARCH_PPC
+  printf("  -%c, --%s %*s Print PVR register (debug purposes)\n", c[ARG_DEBUG], t[ARG_DEBUG], (int) (max_len-strlen(t[ARG_DEBUG])), "");
+#elif ARCH_ARM
+  printf("  -%c, --%s %*s Print main ID register values (debug purposes)\n", c[ARG_DEBUG], t[ARG_DEBUG], (int) (max_len-strlen(t[ARG_DEBUG])), "");
+#endif
+  printf("      --%s %*s Show the short version of the logo\n", t[ARG_LOGO_SHORT], (int) (max_len-strlen(t[ARG_LOGO_SHORT])), "");
+  printf("      --%s %*s Show the long version of the logo\n", t[ARG_LOGO_LONG], (int) (max_len-strlen(t[ARG_LOGO_LONG])), "");
+  printf("  -%c, --%s %*s Print extra information (if available) about how cpufetch tried fetching information\n", c[ARG_VERBOSE], t[ARG_VERBOSE], (int) (max_len-strlen(t[ARG_VERBOSE])), "");
+#ifdef ARCH_X86
+#ifdef __linux__
+  printf("      --%s %*s Compute the peak performance accurately (measure the CPU frequency instead of using the maximum)\n", t[ARG_ACCURATE_PP], (int) (max_len-strlen(t[ARG_ACCURATE_PP])), "");
+  printf("      --%s %*s Measure the max CPU frequency instead of reading it\n", t[ARG_MEASURE_MAX_FREQ], (int) (max_len-strlen(t[ARG_MEASURE_MAX_FREQ])), "");
+#endif // __linux__
+  printf("      --%s %*s Show the old Intel logo\n", t[ARG_LOGO_INTEL_OLD], (int) (max_len-strlen(t[ARG_LOGO_INTEL_OLD])), "");
+  printf("      --%s %*s Show the new Intel logo\n", t[ARG_LOGO_INTEL_NEW], (int) (max_len-strlen(t[ARG_LOGO_INTEL_NEW])), "");
+  printf("  -%c, --%s %*s Show the full CPU name (do not abbreviate it)\n", c[ARG_FULLCPUNAME], t[ARG_FULLCPUNAME], (int) (max_len-strlen(t[ARG_FULLCPUNAME])), "");
+  printf("  -%c, --%s %*s Print raw cpuid data (debug purposes)\n", c[ARG_RAW], t[ARG_RAW], (int) (max_len-strlen(t[ARG_RAW])), "");
+#endif // ARCH_X86
+#ifdef ARCH_ARM
+#ifdef __linux__
+  printf("      --%s %*s Measure the max CPU frequency instead of reading it\n", t[ARG_MEASURE_MAX_FREQ], (int) (max_len-strlen(t[ARG_MEASURE_MAX_FREQ])), "");
+#endif
+#endif
+  printf("  -%c, --%s %*s Print this help and exit\n", c[ARG_HELP], t[ARG_HELP], (int) (max_len-strlen(t[ARG_HELP])), "");
+  printf("  -%c, --%s %*s Print cpufetch version and exit\n", c[ARG_VERSION], t[ARG_VERSION], (int) (max_len-strlen(t[ARG_VERSION])), "");
+
+  printf("\nCOLORS: \n");
+  printf("  * \"intel\":     Use Intel color scheme \n");
+  printf("  * \"intel-new\": Use Intel (new logo) color scheme \n");
+  printf("  * \"amd\":       Use AMD color scheme \n");
+  printf("  * \"ibm\",       Use IBM color scheme \n");
+  printf("  * \"arm\":       Use ARM color scheme \n");
+  printf("  * \"rockchip\":  Use Rockchip color scheme \n");
+  printf("  * \"sifive\":    Use SiFive color scheme \n");
+  printf("  * custom:      If the argument of --color does not match any of the previous strings, a custom scheme can be specified.\n");
+  printf("                 5 colors must be given in RGB with the format: R,G,B:R,G,B:...\n");
+  printf("                 The first 3 colors are the CPU art color and the next 2 colors are the text colors\n");
+
+  printf("\nSTYLES: \n");
+  printf("  * \"fancy\":     Default style\n");
+  printf("  * \"retro\":     Old cpufetch style\n");
+  printf("  * \"legacy\":    Fallback style for terminals that do not support colors\n");
+
+  printf("\nLOGOS: \n");
+  printf("    cpufetch will try to adapt the logo size and the text to the terminal width. When the output (logo and text) is wider than\n");
+  printf("    the terminal width, cpufetch will print a smaller version of the logo (if it exists). This behavior can be overridden by\n");
+  printf("    --logo-short  and --logo-long, which always sets the logo size as specified by the user, even if it is too big. After the\n");
+  printf("    logo selection (either automatically or set by the user), cpufetch will check again if the output fits in the terminal.\n");
+  printf("    If not, it will use a shorter name for the fields (the left part of the text). If, after all of this, the output still does\n");
+  printf("    not fit, cpufetch will cut the text and will only print the text until there is no space left in each line\n");
+
+  printf("\nEXAMPLES: \n");
+  printf("    Run cpufetch with Intel color scheme:\n");
+  printf("      ./cpufetch --color intel\n");
+  printf("    Run cpufetch with a custom color scheme:\n");
+  printf("      ./cpufetch --color 239,90,45:210,200,200:0,0,0:100,200,45:0,200,200\n");
+
+  printf("\nBUGS: \n");
+  printf("    Report bugs to https://github.com/Dr-Noob/cpufetch/issues\n");
+
+  printf("\nNOTE: \n");
+  printf("    Peak performance information is NOT accurate. cpufetch computes peak performance using the max\n");
+  printf("    frequency of the CPU. However, to compute the peak performance, you need to know the frequency of the\n");
+  printf("    CPU running AVX code. By default, this value is not fetched by cpufetch, but you can use the\n");
+  printf("    --accurate-pp option, which will measure the AVX frequency and show a more precise estimation\n");
+  printf("    (this option is only available in x86 architectures).\n");
+  printf("    To precisely measure peak performance, see: https://github.com/Dr-Noob/peakperf\n");
+  printf("\n");
+  printf("    Both --accurate-pp and --measure-max-freq measure the actual frequency of the CPU. However,\n");
+  printf("    they differ slightly. The former measures the max frequency while running vectorized SSE/AVX\n");
+  printf("    instructions and it is thus x86 only, whereas the latter simply measures the max clock cycle\n");
+  printf("    and is architecture independent.\n");
+}
+
+int main(int argc, char* argv[]) {
+  if(!parse_args(argc,argv))
+    return EXIT_FAILURE;
+
+  if(show_help()) {
+    print_help(argv);
+    return EXIT_SUCCESS;
+  }
+
+  if(show_version()) {
+    print_version(stdout);
+    return EXIT_SUCCESS;
+  }
+
+  set_log_level(verbose_enabled());
+
+  struct cpuInfo* cpu = get_cpu_info();
+  if(cpu == NULL)
+    return EXIT_FAILURE;
+
+  if(show_debug()) {
+    print_version(stdout);
+    print_debug(cpu);
+    return EXIT_SUCCESS;
+  }
+
+  // TODO: This should be moved to the end of args.c
+  if(show_raw()) {
+  #ifdef ARCH_X86
+    print_version(stdout);
+    print_raw(cpu);
+    return EXIT_SUCCESS;
+  #else
+    printErr("raw option is valid only in x86_64");
+    return EXIT_FAILURE;
+  #endif
+  }
+
+  if(print_cpufetch(cpu, get_style(), get_colors(), show_full_cpu_name())) {
+    return EXIT_SUCCESS;
+  }
+  else {
+    return EXIT_FAILURE;
+  }
+}

src/common/pci.c

@@ -0,0 +1,133 @@
+#define _GNU_SOURCE
+
+#include <sys/stat.h>
+#include <dirent.h>
+
+#include "udev.h"
+#include "global.h"
+#include "pci.h"
+
+#ifndef PATH_MAX
+  #define PATH_MAX 1024
+#endif
+
+#define PCI_PATH "/sys/bus/pci/devices/"
+#define MAX_LENGTH_PCI_DIR_NAME 1024
+
+// Return a list of PCI devices containing only
+// the sysfs path
+struct pci_devices * get_pci_paths(void) {
+  DIR *dirp;
+
+  if ((dirp = opendir(PCI_PATH)) == NULL) {
+    perror("opendir");
+    return NULL;
+  }
+
+  struct dirent *dp;
+  int numDirs = 0;  
+  errno = 0;
+
+  while ((dp = readdir(dirp)) != NULL) {
+    if (strcmp(dp->d_name, ".") != 0 && strcmp(dp->d_name, "..") != 0)
+      numDirs++;
+  }  
+  if (errno != 0) {
+    perror("readdir");
+    return NULL;
+  }
+
+  rewinddir(dirp);
+
+  struct pci_devices * pci = emalloc(sizeof(struct pci_devices));
+  pci->num_devices = numDirs;
+  pci->devices = emalloc(sizeof(struct pci_device) * pci->num_devices);
+  char * full_path = emalloc(PATH_MAX * sizeof(char));
+  struct stat stbuf;
+  int i = 0;
+
+  while ((dp = readdir(dirp)) != NULL) {
+    if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0)
+      continue;
+
+    if (strlen(dp->d_name) > MAX_LENGTH_PCI_DIR_NAME) {
+      printErr("Directory name is too long: %s", dp->d_name);
+      return NULL;
+    }
+
+    memset(full_path, 0, PATH_MAX * sizeof(char));
+    snprintf(full_path, min(strlen(PCI_PATH) + strlen(dp->d_name) + 1, PATH_MAX), "%s%s", PCI_PATH, dp->d_name);    
+
+    if (stat(full_path, &stbuf) == -1) {
+      perror("stat");
+      return NULL;
+    }
+
+    if ((stbuf.st_mode & S_IFMT) == S_IFDIR) {
+      int strLen = min(MAX_LENGTH_PCI_DIR_NAME, strlen(dp->d_name)) + 1;
+      pci->devices[i] = emalloc(sizeof(struct pci_device));
+      pci->devices[i]->path = ecalloc(strLen, sizeof(char));
+      strncpy(pci->devices[i]->path, dp->d_name, strLen);
+      i++;
+    }        
+  }
+  if (errno != 0) {
+    perror("readdir");
+    return NULL;
+  }
+
+  return pci;
+}
+
+// For each PCI device in the list pci, fetch its vendor and 
+// device id using sysfs (e.g., /sys/bus/pci/devices/XXX/{vendor/device})
+void populate_pci_devices(struct pci_devices * pci) {
+  int filelen;
+  char* buf;
+
+  for (int i=0; i < pci->num_devices; i++) {
+    struct pci_device* dev = pci->devices[i];
+    int path_size = strlen(PCI_PATH) + strlen(dev->path) + 2;
+
+    // Read vendor_id
+    char *vendor_id_path = emalloc(sizeof(char) * (path_size + strlen("vendor") + 1));
+    sprintf(vendor_id_path, "%s/%s/%s", PCI_PATH, dev->path, "vendor");
+
+    if ((buf = read_file(vendor_id_path, &filelen)) == NULL) {
+      printWarn("read_file: %s: %s\n", vendor_id_path, strerror(errno));
+      dev->vendor_id = 0;
+    }
+    else {
+      dev->vendor_id = strtol(buf, NULL, 16);
+    }
+
+    // Read device_id
+    char *device_id_path = emalloc(sizeof(char) * (path_size + strlen("device") + 1));
+    sprintf(device_id_path, "%s/%s/%s", PCI_PATH, dev->path, "device");
+
+    if ((buf = read_file(device_id_path, &filelen)) == NULL) {
+      printWarn("read_file: %s: %s\n", device_id_path, strerror(errno));
+      dev->device_id = 0;
+    }
+    else {
+      dev->device_id = strtol(buf, NULL, 16);
+    }
+
+    free(vendor_id_path);
+    free(device_id_path);
+  }
+}
+
+// Return a list of PCI devices that could be used to infer the SoC.
+// The criteria to determine which devices are suitable for this task
+// is decided in filter_pci_devices.
+struct pci_devices * get_pci_devices(void) {
+  struct pci_devices * pci = get_pci_paths();
+
+  if (pci == NULL)
+    return NULL;
+
+  populate_pci_devices(pci);  
+
+  return pci;
+}

src/common/pci.h

@@ -0,0 +1,23 @@
+#ifndef __PCI__
+#define __PCI__
+
+#define PCI_VENDOR_NVIDIA   0x10de
+#define PCI_VENDOR_AMPERE   0x1def
+
+#define PCI_DEVICE_TEGRA_X1 0x0faf
+#define PCI_DEVICE_ALTRA    0xe100
+
+struct pci_device {
+  char * path;
+  uint16_t vendor_id;
+  uint16_t device_id;
+};
+
+struct pci_devices {
+  struct pci_device ** devices;
+  int num_devices;
+};
+
+struct pci_devices * get_pci_devices(void);
+
+#endif

src/common/printer.h

@@ -0,0 +1,35 @@
+#ifndef __PRINTER__
+#define __PRINTER__
+
+typedef int STYLE;
+
+#include "args.h"
+
+#ifdef ARCH_X86
+  #include "../x86/cpuid.h"
+#elif ARCH_PPC
+  #include "../ppc/ppc.h"
+#elif ARCH_ARM
+  #include "../arm/midr.h"
+#elif ARCH_RISCV
+  #include "../riscv/riscv.h"
+#endif
+
+//                              +-----------------------------------+-----------------------+
+//                              | Color logo                        | Color text            |
+//                              | Color 1   | Color 2   | Color 3   | Color 1   | Color 2   |
+#define COLOR_DEFAULT_INTEL     "015,125,194:230,230,230:000,000,000:040,150,220:230,230,230"
+#define COLOR_DEFAULT_INTEL_NEW "030,204,251:250,250,250:000,104,181:230,230,230:030,204,251"
+#define COLOR_DEFAULT_AMD       "250,250,250:000,154,102:000,000,000:250,250,250:000,154,102"
+#define COLOR_DEFAULT_IBM       "092,119,172:092,119,172:000,000,000:240,240,240:092,119,172"
+#define COLOR_DEFAULT_ARM       "000,145,189:000,145,189:000,000,000:240,240,240:000,145,189"
+#define COLOR_DEFAULT_ROCKCHIP  "114,159,207:229,195,000:000,000,000:240,240,240:114,159,207"
+#define COLOR_DEFAULT_SIFIVE    "255,255,255:000,000,000:000,000,000:255,255,255:000,000,000"
+
+#ifdef ARCH_X86
+void print_levels(struct cpuInfo* cpu);
+#endif
+
+bool print_cpufetch(struct cpuInfo* cpu, STYLE s, struct color** cs, bool fcpuname);
+
+#endif

src/common/soc.c

@@ -0,0 +1,117 @@
+#include "soc.h"
+#ifdef ARCH_ARM
+  #include "../arm/socs.h"
+#elif ARCH_RISCV
+  #include "../riscv/socs.h"
+#endif
+#include "udev.h"
+#include "../common/global.h"
+
+#include <string.h>
+
+static char* soc_trademark_string[] = {
+  // ARM
+  [SOC_VENDOR_SNAPDRAGON] = "Snapdragon ",
+  [SOC_VENDOR_MEDIATEK]   = "MediaTek ",
+  [SOC_VENDOR_EXYNOS]     = "Exynos ",
+  [SOC_VENDOR_KIRIN]      = "Kirin ",
+  [SOC_VENDOR_KUNPENG]    = "Kunpeng ",
+  [SOC_VENDOR_BROADCOM]   = "Broadcom ",
+  [SOC_VENDOR_APPLE]      = "Apple ",
+  [SOC_VENDOR_ROCKCHIP]   = "Rockchip ",
+  [SOC_VENDOR_GOOGLE]     = "Google ",
+  [SOC_VENDOR_NVIDIA]     = "NVIDIA ",
+  [SOC_VENDOR_AMPERE]     = "Ampere ",
+  [SOC_VENDOR_NXP]        = "NXP ",
+  [SOC_VENDOR_AMLOGIC]    = "Amlogic ",
+  [SOC_VENDOR_MARVELL]    = "Marvell",
+  // RISC-V
+  [SOC_VENDOR_SIFIVE]     = "SiFive ",
+  [SOC_VENDOR_STARFIVE]   = "StarFive ",
+  [SOC_VENDOR_SIPEED]     = "Sipeed ",
+  [SOC_VENDOR_SPACEMIT]   = "SpacemiT ",
+  // ARM & RISC-V
+  [SOC_VENDOR_ALLWINNER]  = "Allwinner "
+};
+
+VENDOR get_soc_vendor(struct system_on_chip* soc) {
+  return soc->vendor;
+}
+
+char* get_str_process(struct system_on_chip* soc) {
+  char* str;
+
+  if(soc->process == UNKNOWN) {
+    str = emalloc(sizeof(char) * (strlen(STRING_UNKNOWN)+1));
+    snprintf(str, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
+  }
+  else {
+    int max_process_len = 5 + 1;
+    str = ecalloc(max_process_len, sizeof(char));
+    snprintf(str, max_process_len, "%dnm", soc->process);
+  }
+  return str;
+}
+
+char* get_soc_name(struct system_on_chip* soc) {
+  if(soc->model == SOC_MODEL_UNKNOWN)
+    return soc->raw_name;
+  return soc->name;
+}
+
+void fill_soc(struct system_on_chip* soc, char* soc_name, SOC soc_model, int32_t process) {
+  soc->model = soc_model;
+  soc->vendor = get_soc_vendor_from_soc(soc_model);
+  soc->process = process;
+  if(soc->vendor == SOC_VENDOR_UNKNOWN) {
+    printBug("fill_soc: soc->vendor == SOC_VENDOR_UNKOWN");
+    // If we fall here there is a bug in socs.h
+    // Reset everything to avoid segfault
+    soc->vendor = SOC_VENDOR_UNKNOWN;
+    soc->model = SOC_MODEL_UNKNOWN;
+    soc->process = UNKNOWN;
+    soc->raw_name = emalloc(sizeof(char) * (strlen(STRING_UNKNOWN)+1));
+    snprintf(soc->raw_name, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
+  }
+  else {
+    int len = strlen(soc_name) + strlen(soc_trademark_string[soc->vendor]) + 1;
+    soc->name = emalloc(sizeof(char) * len);
+    sprintf(soc->name, "%s%s", soc_trademark_string[soc->vendor], soc_name);
+  }
+}
+
+void fill_soc_raw(struct system_on_chip* soc, char* soc_name, VENDOR vendor) {
+  soc->model = SOC_MODEL_UNKNOWN;
+  soc->vendor = vendor;
+  soc->process = UNKNOWN;
+
+  int len = strlen(soc_name) + strlen(soc_trademark_string[soc->vendor]) + 1;
+  soc->raw_name = emalloc(sizeof(char) * len);
+  sprintf(soc->raw_name, "%s%s", soc_trademark_string[soc->vendor], soc_name);
+}
+
+#ifdef _WIN32
+VENDOR try_match_soc_vendor_name(char* vendor_name)
+{
+  for(size_t i=1; i < sizeof(soc_trademark_string)/sizeof(soc_trademark_string[0]); i++) {
+    if(strstr(vendor_name, soc_trademark_string[i]) != NULL) {
+      return i;
+    }
+  }
+  return SOC_VENDOR_UNKNOWN;
+}
+#endif
+
+bool match_soc(struct system_on_chip* soc, char* raw_name, char* expected_name, char* soc_name, SOC soc_model, int32_t process) {
+  int len1 = strlen(raw_name);
+  int len2 = strlen(expected_name);
+  int len = min(len1, len2);
+
+  if(strncmp(raw_name, expected_name, len) != 0) {
+    return false;
+  }
+  else {
+    fill_soc(soc, soc_name, soc_model, process);
+    return true;
+  }
+}

src/common/soc.h

@@ -0,0 +1,65 @@
+#ifndef __SOC__
+#define __SOC__
+
+// NOTE:
+// soc.c/soc.h are used by
+// ARM and RISC-V backends
+
+#include "../common/cpu.h"
+#include <stdint.h>
+
+#define UNKNOWN -1
+
+typedef int32_t SOC;
+
+enum {
+  SOC_VENDOR_UNKNOWN,
+  // ARM
+  SOC_VENDOR_SNAPDRAGON,
+  SOC_VENDOR_MEDIATEK,
+  SOC_VENDOR_EXYNOS,
+  SOC_VENDOR_KIRIN,
+  SOC_VENDOR_KUNPENG,
+  SOC_VENDOR_BROADCOM,
+  SOC_VENDOR_APPLE,
+  SOC_VENDOR_ROCKCHIP,
+  SOC_VENDOR_GOOGLE,
+  SOC_VENDOR_NVIDIA,
+  SOC_VENDOR_AMPERE,
+  SOC_VENDOR_NXP,
+  SOC_VENDOR_AMLOGIC,
+  SOC_VENDOR_MARVELL,
+  // RISC-V
+  SOC_VENDOR_SIFIVE,
+  SOC_VENDOR_STARFIVE,
+  SOC_VENDOR_SIPEED,
+  SOC_VENDOR_SPACEMIT,
+  // ARM & RISC-V
+  SOC_VENDOR_ALLWINNER
+};
+
+struct system_on_chip {
+  SOC model;
+  VENDOR vendor;
+  int32_t process;
+  char* name;
+  char* raw_name;
+};
+
+struct system_on_chip* get_soc(struct cpuInfo* cpu);
+char* get_soc_name(struct system_on_chip* soc);
+VENDOR get_soc_vendor(struct system_on_chip* soc);
+bool match_soc(struct system_on_chip* soc, char* raw_name, char* expected_name, char* soc_name, SOC soc_model, int32_t process);
+char* get_str_process(struct system_on_chip* soc);
+void fill_soc(struct system_on_chip* soc, char* soc_name, SOC soc_model, int32_t process);
+void fill_soc_raw(struct system_on_chip* soc, char* soc_name, VENDOR vendor);
+#ifdef _WIN32
+VENDOR try_match_soc_vendor_name(char* vendor_name);
+#endif
+
+#define SOC_START if (false) {}
+#define SOC_EQ(raw_name, expected_name, soc_name, soc_model, soc, process) \
+   else if (match_soc(soc, raw_name, expected_name, soc_name, soc_model, process)) return true;
+#define SOC_END else { return false; }
+
+#endif

src/common/sysctl.c

@@ -0,0 +1,25 @@
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "global.h"
+#include "cpu.h"
+
+uint32_t get_sys_info_by_name(char* name) {
+  size_t size = 0;
+  uint32_t ret = 0;
+
+  if (sysctlbyname(name, NULL, &size, NULL, 0) != 0) {
+    printWarn("sysctlbyname(%s) failed: %s", name, strerror(errno));
+  }
+  else if (size == sizeof(uint32_t)) {
+    sysctlbyname(name, &ret, &size, NULL, 0);
+  }
+  else {
+    printWarn("sysctl does not support non-integer lookup for '%s'", name);
+  }
+
+  return ret;
+}

src/common/sysctl.h

@@ -0,0 +1,56 @@
+#ifndef __SYSCTL__
+#define __SYSCTL__
+
+// From Linux kernel: arch/arm64/include/asm/cputype.h
+#define MIDR_APPLE_M1_ICESTORM  0x610F0220
+#define MIDR_APPLE_M1_FIRESTORM 0x610F0230
+// Kernel does not include those, so I just assume that
+// APPLE_CPU_PART_M2_BLIZZARD=0x30,M2_AVALANCHE=0x31
+#define MIDR_APPLE_M2_BLIZZARD  0x610F0300
+#define MIDR_APPLE_M2_AVALANCHE 0x610F0310
+// https://github.com/AsahiLinux/m1n1/blob/main/src/chickens.c
+#define MIDR_APPLE_M3_SAWTOOTH  0x610F0480
+#define MIDR_APPLE_M3_EVEREST   0x610F0490
+
+// M1 / A14
+#ifndef CPUFAMILY_ARM_FIRESTORM_ICESTORM
+  #define CPUFAMILY_ARM_FIRESTORM_ICESTORM 0x1B588BB3
+#endif
+// M2 / A15
+#ifndef CPUFAMILY_ARM_AVALANCHE_BLIZZARD
+  #define CPUFAMILY_ARM_AVALANCHE_BLIZZARD 0xDA33D83D
+#endif
+// M3 / A16 / A17
+// M3:   https://ratfactor.com/zig/stdlib-browseable2/c/darwin.zig.html
+// M3_2: https://github.com/Dr-Noob/cpufetch/issues/230
+// PRO:  https://github.com/Dr-Noob/cpufetch/issues/225
+// MAX:  https://github.com/Dr-Noob/cpufetch/issues/210
+#define CPUFAMILY_ARM_EVEREST_SAWTOOTH     0x8765EDEA
+#define CPUFAMILY_ARM_EVEREST_SAWTOOTH_2   0xFA33415E
+#define CPUFAMILY_ARM_EVEREST_SAWTOOTH_PRO 0x5F4DEA93
+#define CPUFAMILY_ARM_EVEREST_SAWTOOTH_MAX 0x72015832
+
+// For detecting different M1 types
+// NOTE: Could also be achieved detecting different
+// MIDR values (e.g., APPLE_CPU_PART_M1_ICESTORM_PRO)
+#ifndef CPUSUBFAMILY_ARM_HG
+  #define CPUSUBFAMILY_ARM_HG 2
+#endif
+#ifndef CPUSUBFAMILY_ARM_HS
+  #define CPUSUBFAMILY_ARM_HS 4
+#endif
+#ifndef CPUSUBFAMILY_ARM_HC_HD
+  #define CPUSUBFAMILY_ARM_HC_HD 5
+#endif
+
+// For alternative way to get CPU frequency on macOS and *BSD
+#ifdef __APPLE__
+  #define CPUFREQUENCY_SYSCTL "hw.cpufrequency_max"
+#else
+  // For FreeBSD, not sure about other *BSD
+  #define CPUFREQUENCY_SYSCTL "dev.cpu.0.freq"
+#endif
+
+uint32_t get_sys_info_by_name(char* name);
+
+#endif

src/common/udev.c

@@ -0,0 +1,429 @@
+#include "../common/global.h"
+#include "udev.h"
+#include "global.h"
+#include "cpu.h"
+
+#define _PATH_DEVTREE          "/proc/device-tree/compatible"
+
+// https://www.kernel.org/doc/html/latest/core-api/cpu_hotplug.html
+int get_ncores_from_cpuinfo(void) {
+  // Examples:
+  // 0-271
+  // 0-7
+  // 0
+
+  int filelen;
+  char* buf;
+  if((buf = read_file(_PATH_CPUS_PRESENT, &filelen)) == NULL) {
+    printWarn("read_file: %s: %s\n", _PATH_CPUS_PRESENT, strerror(errno));
+    return -1;
+  }
+
+  int ncores;
+  char* tmp1;
+  if((tmp1 = strstr(buf, "-")) == NULL) {
+    // file contains no - character, we assume that it contains 0,
+    // which means that the CPU contains only one core
+    return 1;
+  }
+  else {
+    tmp1++;
+  }
+  char* tmp2 = strstr(buf, "\n");
+  char ncores_str[filelen];
+  memset(ncores_str, 0, sizeof(char) * filelen);
+  memcpy(ncores_str, tmp1, tmp2-tmp1);
+
+  char* end;
+  errno = 0;
+  ncores = strtol(ncores_str, &end, 10) + 1;
+  if(errno != 0) {
+    printWarn("strtol: %s:\n", strerror(errno));
+    return -1;
+  }
+
+  free(buf);
+
+  return ncores;
+}
+
+char* read_file(char* path, int* len) {
+  int fd = open(path, O_RDONLY);
+
+  if(fd == -1) {
+    return NULL;
+  }
+
+  //File exists, read it
+  int bytes_read = 0;
+  int offset = 0;
+  int block = 1024;
+  int buf_size = block * 4;
+  char* buf = emalloc(sizeof(char) * buf_size);
+
+  while ((bytes_read = read(fd, buf+offset, block)) > 0) {
+    offset += bytes_read;
+    if(offset + block > buf_size) {
+      buf = erealloc(buf, sizeof(char) * (buf_size + block));
+      buf_size += block;
+    }
+  }
+  buf[offset] = '\0';
+
+  if (close(fd) == -1) {
+    return NULL;
+  }
+
+  *len = offset;
+  return buf;
+}
+
+long get_freq_from_file(char* path) {
+  int filelen;
+  char* buf;
+  if((buf = read_file(path, &filelen)) == NULL) {
+    printWarn("Could not open '%s'", path);
+    return UNKNOWN_DATA;
+  }
+
+  char* end;
+  errno = 0;
+  long ret = strtol(buf, &end, 10);
+  if(errno != 0) {
+    printBug("strtol: %s", strerror(errno));
+    free(buf);
+    return UNKNOWN_DATA;
+  }
+
+  // We will be getting the frequency in KHz
+  // We consider it is an error if frequency is
+  // greater than 10 GHz or less than 100 MHz
+  if(ret > 10000 * 1000 || ret <  100 * 1000) {
+    printBug("Invalid data was read from file '%s': %ld\n", path, ret);
+    return UNKNOWN_DATA;
+  }
+
+  free(buf);
+
+  return ret/1000;
+}
+
+long get_cache_size_from_file(char* path) {
+  int filelen;
+  char* buf;
+  if((buf = read_file(path, &filelen)) == NULL) {
+    printWarn("Could not open '%s'", path);
+    return -1;
+  }
+
+  buf[filelen] = '\0'; // remove the K at the end
+
+  char* end;
+  errno = 0;
+  long ret = strtol(buf, &end, 10);
+  if(errno != 0) {
+    printBug("strtol: %s", strerror(errno));
+    free(buf);
+    return -1;
+  }
+
+  free(buf);
+
+  return ret * 1024;
+}
+
+char* get_field_from_cpuinfo(char* CPUINFO_FIELD) {
+  int filelen;
+  char* buf;
+  if((buf = read_file(_PATH_CPUINFO, &filelen)) == NULL) {
+    printWarn("read_file: %s: %s:\n", _PATH_CPUINFO, strerror(errno));
+    return NULL;
+  }
+
+  char* tmp1 = strstr(buf, CPUINFO_FIELD);
+  if(tmp1 == NULL) return NULL;
+  tmp1 = tmp1 + strlen(CPUINFO_FIELD);
+  char* tmp2 = strstr(tmp1, "\n");
+
+  int strlen = (1 + (tmp2-tmp1));
+  char* hardware = ecalloc(strlen, sizeof(char));
+  strncpy(hardware, tmp1, tmp2-tmp1);
+
+  return hardware;
+}
+
+long get_max_freq_from_file(uint32_t core) {
+  char path[_PATH_FREQUENCY_MAX_LEN];
+  sprintf(path, "%s%s/cpu%d%s%s", _PATH_SYS_SYSTEM, _PATH_SYS_CPU, core, _PATH_FREQUENCY, _PATH_FREQUENCY_MAX);
+  return get_freq_from_file(path);
+}
+
+long get_min_freq_from_file(uint32_t core) {
+  char path[_PATH_FREQUENCY_MAX_LEN];
+  sprintf(path, "%s%s/cpu%d%s%s", _PATH_SYS_SYSTEM, _PATH_SYS_CPU, core, _PATH_FREQUENCY, _PATH_FREQUENCY_MIN);
+  return get_freq_from_file(path);
+}
+
+long get_l1i_cache_size(uint32_t core) {
+  char path[_PATH_CACHE_MAX_LEN];
+  sprintf(path, "%s%s/cpu%d%s%s",  _PATH_SYS_SYSTEM, _PATH_SYS_CPU, core, _PATH_CACHE_L1I, _PATH_CACHE_SIZE);
+  return get_cache_size_from_file(path);
+}
+
+long get_l1d_cache_size(uint32_t core) {
+  char path[_PATH_CACHE_MAX_LEN];
+  sprintf(path, "%s%s/cpu%d%s%s",  _PATH_SYS_SYSTEM, _PATH_SYS_CPU, core, _PATH_CACHE_L1D, _PATH_CACHE_SIZE);
+  return get_cache_size_from_file(path);
+}
+
+long get_l2_cache_size(uint32_t core) {
+  char path[_PATH_CACHE_MAX_LEN];
+  sprintf(path, "%s%s/cpu%d%s%s",  _PATH_SYS_SYSTEM, _PATH_SYS_CPU, core, _PATH_CACHE_L2, _PATH_CACHE_SIZE);
+  return get_cache_size_from_file(path);
+}
+
+long get_l3_cache_size(uint32_t core) {
+  char path[_PATH_CACHE_MAX_LEN];
+  sprintf(path, "%s%s/cpu%d%s%s",  _PATH_SYS_SYSTEM, _PATH_SYS_CPU, core, _PATH_CACHE_L3, _PATH_CACHE_SIZE);
+  return get_cache_size_from_file(path);
+}
+
+void add_shared_map(uint32_t** src, int src_idx, uint32_t** dst, int dst_idx, int n) {
+  for(int j=0; j < n; j++) {
+    dst[dst_idx][j] = src[src_idx][j];
+  }
+}
+
+bool maps_equal(uint32_t* map1, uint32_t* map2, int n) {
+  for(int i=0; i < n; i++) {
+    if(map1[i] != map2[i]) return false;
+  }
+  return true;
+}
+
+// Generic function to count the number of distinct
+// elements in the list of files passed in char** paths.
+// An element can be potentially anything.
+// We use this function to count:
+// - The number of caches
+// - The number of sockets
+int get_num_elements_from_files(char** paths, int num_paths) {
+  int filelen;
+  char* buf;
+  char* tmpbuf;
+
+  // 1. Count the number of bitmasks per file
+  if((buf = read_file(paths[0], &filelen)) == NULL) {
+    printWarn("Could not open '%s'", paths[0]);
+    return -1;
+  }
+  int num_bitmasks = 1;
+  for(int i=0; buf[i]; i++) {
+    num_bitmasks += (buf[i] == ',');
+  }
+
+  // 2. Read map from every core
+  uint32_t** maps = emalloc(sizeof(uint32_t *) * num_paths);
+  for(int i=0; i < num_paths; i++) {
+    maps[i] = emalloc(sizeof(uint32_t) * num_bitmasks);
+
+    if((buf = read_file(paths[i], &filelen)) == NULL) {
+      printWarn("Could not open '%s'", paths[i]);
+      return -1;
+    }
+
+    for(int j=0; j < num_bitmasks; j++) {
+      char* end;
+      tmpbuf = emalloc(sizeof(char) * (strlen(buf) + 1));
+      memset(tmpbuf, 0, sizeof(char) * (strlen(buf) + 1));
+      char* commaend = strstr(buf, ",");
+      if(commaend == NULL) {
+        strcpy(tmpbuf, buf);
+      }
+      else {
+        strncpy(tmpbuf, buf, commaend-buf);
+      }
+      errno = 0;
+      long ret = strtol(tmpbuf, &end, 16);
+      if(errno != 0) {
+        printf("strtol: %s", strerror(errno));
+        free(buf);
+        return -1;
+      }
+
+      maps[i][j] = (uint32_t) ret;
+      buf = commaend + 1;
+      free(tmpbuf);
+    }
+  }
+
+  // 2. Count number of different masks; this is the number of elements
+  int num_elements = 0;
+  bool found = false;
+  uint32_t** unique_maps = emalloc(sizeof(uint32_t *) * num_paths);
+  for(int i=0; i < num_paths; i++) {
+    unique_maps[i] = emalloc(sizeof(uint32_t) * num_bitmasks);
+    for(int j=0; j < num_bitmasks; j++) {
+      unique_maps[i][j] = 0;
+    }
+  }
+
+  for(int i=0; i < num_paths; i++) {
+    for(int j=0; j < num_paths && !found; j++) {
+      if(maps_equal(maps[i], unique_maps[j], num_bitmasks)) found = true;
+    }
+    if(!found) {
+      add_shared_map(maps, i, unique_maps, num_elements, num_bitmasks);
+      num_elements++;
+    }
+    found = false;
+  }
+
+  return num_elements;
+}
+
+int get_num_caches_from_files(char** paths, int num_paths) {
+  return get_num_elements_from_files(paths, num_paths);
+}
+
+int get_num_sockets_from_files(char** paths, int num_paths) {
+  return get_num_elements_from_files(paths, num_paths);
+}
+
+int get_num_caches_by_level(struct cpuInfo* cpu, uint32_t level) {
+  char** paths = emalloc(sizeof(char *) * cpu->topo->total_cores);
+  char* cache_path = NULL;
+
+  if(level == 0) cache_path = _PATH_CACHE_L1I;
+  else if(level == 1) cache_path = _PATH_CACHE_L1D;
+  else if(level == 2) cache_path = _PATH_CACHE_L2;
+  else if(level == 3) cache_path = _PATH_CACHE_L3;
+  else {
+    printBug("Found invalid cache level to inspect: %d\n", level);
+    return -1;
+  }
+
+  for(int i=0; i < cpu->topo->total_cores; i++) {
+    paths[i] = emalloc(sizeof(char) * _PATH_CACHE_MAX_LEN);
+    sprintf(paths[i], "%s%s/cpu%d%s%s",  _PATH_SYS_SYSTEM, _PATH_SYS_CPU, i, cache_path, _PATH_CACHE_SHARED_MAP);
+  }
+
+  int ret = get_num_caches_from_files(paths, cpu->topo->total_cores);
+
+  for(int i=0; i < cpu->topo->total_cores; i++)
+    free(paths[i]);
+  free(paths);
+
+  return ret;
+}
+
+int get_num_sockets_package_cpus(struct topology* topo) {
+  // Get number of sockets using
+  // /sys/devices/system/cpu/cpu*/topology/package_cpus
+
+  char** paths = emalloc(sizeof(char *) * topo->total_cores);
+
+  for(int i=0; i < topo->total_cores; i++) {
+    paths[i] = emalloc(sizeof(char) * _PATH_PACKAGE_MAX_LEN);
+    sprintf(paths[i], "%s%s/cpu%d%s",  _PATH_SYS_SYSTEM, _PATH_SYS_CPU, i, _PATH_TOPO_PACKAGE_CPUS);
+  }
+
+  int ret = get_num_sockets_from_files(paths, topo->total_cores);
+
+  for(int i=0; i < topo->total_cores; i++)
+    free(paths[i]);
+  free(paths);
+
+  return ret;
+}
+
+// Inspired in is_devtree_compatible from lscpu
+bool is_devtree_compatible(char* str) {
+  int filelen;
+  char* buf;
+  if((buf = read_file("/proc/device-tree/compatible", &filelen)) == NULL) {
+    return false;
+  }
+
+  char* tmp;
+  if((tmp = strstr(buf, str)) == NULL) {
+    return false;
+  }
+  return true;
+}
+
+char* get_devtree_compatible(int *filelen) {
+  char* buf;
+
+  if ((buf = read_file(_PATH_DEVTREE, filelen)) == NULL) {
+    printWarn("read_file: %s: %s", _PATH_DEVTREE, strerror(errno));
+  }
+
+  return buf;
+}
+
+// Returns a list of structs devtree, each containing both the vendor and the
+// model, coming from the compatible file from the device tree. In this
+// context, vendor refers to the first string of every entry and the model to
+// the second. For instance, given a compatible file with:
+// "str1,foo1.str2,foo2" (where . denotes the NULL byte, i.e., the separator),
+// then this function will return a list with two structs, the first one
+// containing str1 and foo1 and the other containing str2 and foo2.
+struct devtree** get_devtree_compatible_struct(int *num_vendors_ptr) {
+  int len;
+  char* dt = get_devtree_compatible(&len);
+  if (dt == NULL) {
+    return NULL;
+  }
+
+  int num_vendors = 0;
+  char* ptr = dt;
+
+  for (int ptrpos = 0; ptrpos < len; ptrpos = (ptr-dt)) {
+    ptr = memchr(ptr, '\0', len);
+    if (ptr == NULL) {
+      printBug("get_devtree_compatible_struct: Unable to find delimiter (1) (num_vendors=%d)", num_vendors);
+      return NULL;
+    }
+    ptr++;
+    num_vendors++;
+  }
+
+  struct devtree** vendors = emalloc(sizeof(struct devtree *) * num_vendors);
+  ptr = dt;
+
+  for (int ptrpos = 0, i = 0; ptrpos < len; ptrpos = (ptr-dt), i++) {
+    char* comma_ptr = strstr(ptr, ",");
+    if (comma_ptr == NULL) {
+      printBug("get_devtree_compatible_struct: Unable to find comma (num_vendors=%d)", num_vendors);
+      return NULL;
+    }
+    comma_ptr = comma_ptr-1; // Point right before comma
+
+    char* end_ptr = memchr(comma_ptr, '\0', len - ptrpos);
+    if (end_ptr == NULL) {
+      printBug("get_devtree_compatible_struct: Unable to find delimiter (2) (num_vendors=%d)", num_vendors);
+      return NULL;
+    }
+
+    int vendor_str_len = (comma_ptr-ptr)+1;
+    int model_str_len = (end_ptr-(comma_ptr+2))+1;
+
+    vendors[i] = emalloc(sizeof(struct devtree));
+    vendors[i]->vendor = ecalloc(vendor_str_len, sizeof(char));
+    vendors[i]->model = ecalloc(model_str_len, sizeof(char));
+
+    strncpy(vendors[i]->vendor, ptr, vendor_str_len);
+    strncpy(vendors[i]->model, comma_ptr+2, model_str_len);
+
+    ptr = memchr(ptr, '\0', len);
+    if (ptr == NULL) {
+      printBug("get_devtree_compatible_struct: Unable to find delimiter (3) (num_vendors=%d)", num_vendors);
+      return NULL;
+    }
+    ptr++; // Point right after delimiter
+  }
+
+  *num_vendors_ptr = num_vendors;
+  return vendors;
+}

src/common/udev.h

@@ -0,0 +1,54 @@
+#ifndef __UDEV__
+#define __UDEV__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "cpu.h"
+
+#define _PATH_CPUINFO           "/proc/cpuinfo"
+#define _PATH_SYS_SYSTEM        "/sys/devices/system"
+#define _PATH_SYS_CPU           "/cpu"
+#define _PATH_FREQUENCY         "/cpufreq"
+#define _PATH_FREQUENCY_MAX     "/cpuinfo_max_freq"
+#define _PATH_FREQUENCY_MIN     "/cpuinfo_min_freq"
+#define _PATH_CACHE_L1D         "/cache/index0"
+#define _PATH_CACHE_L1I         "/cache/index1"
+#define _PATH_CACHE_L2          "/cache/index2"
+#define _PATH_CACHE_L3          "/cache/index3"
+#define _PATH_CACHE_SIZE        "/size"
+#define _PATH_CACHE_SHARED_MAP  "/shared_cpu_map"
+#define _PATH_CPUS_PRESENT      _PATH_SYS_SYSTEM _PATH_SYS_CPU "/present"
+#define _PATH_TOPO_PACKAGE_CPUS "/topology/package_cpus"
+
+#define _PATH_FREQUENCY_MAX_LEN 100
+#define _PATH_CACHE_MAX_LEN     200
+#define _PATH_PACKAGE_MAX_LEN   200
+
+struct devtree {
+  char* vendor;
+  char* model;
+};
+
+char* read_file(char* path, int* len);
+long get_max_freq_from_file(uint32_t core);
+long get_min_freq_from_file(uint32_t core);
+long get_l1i_cache_size(uint32_t core);
+long get_l1d_cache_size(uint32_t core);
+long get_l2_cache_size(uint32_t core);
+long get_l3_cache_size(uint32_t core);
+int get_num_caches_by_level(struct cpuInfo* cpu, uint32_t level);
+int get_num_sockets_package_cpus(struct topology* topo);
+int get_ncores_from_cpuinfo(void);
+char* get_field_from_cpuinfo(char* CPUINFO_FIELD);
+bool is_devtree_compatible(char* str);
+char* get_devtree_compatible(int *filelen);
+struct devtree** get_devtree_compatible_struct(int *num_vendors);
+
+#endif

src/cpuid.c

@@ -1,875 +0,0 @@
-#ifdef _WIN32
-  #include <windows.h>
-#else
-  #include "udev.h"
-  #include <unistd.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <stdbool.h>
-
-#include "cpuid.h"
-#include "cpuid_asm.h"
-#include "global.h"
-#include "apic.h"
-
-#define VENDOR_INTEL_STRING "GenuineIntel"
-#define VENDOR_AMD_STRING   "AuthenticAMD"
-
-#define STRING_YES        "Yes"
-#define STRING_NO         "No"
-#define STRING_UNKNOWN    "Unknown"
-#define STRING_NONE       "None"
-#define STRING_MEGAHERZ   "MHz"
-#define STRING_GIGAHERZ   "GHz"
-#define STRING_KILOBYTES  "KB"
-#define STRING_MEGABYTES  "MB"
-
-#define CPU_NAME_MAX_LENGTH 64
-
-#define MASK 0xFF
-
-/*
- * cpuid reference: http://www.sandpile.org/x86/cpuid.htm
- * cpuid amd: https://www.amd.com/system/files/TechDocs/25481.pdf
- */
-
-struct cpuInfo {
-  bool AVX;
-  bool AVX2;
-  bool AVX512;
-  bool SSE;
-  bool SSE2;
-  bool SSE3;
-  bool SSSE3;
-  bool SSE4a;
-  bool SSE4_1;
-  bool SSE4_2;
-  bool FMA3;
-  bool FMA4;
-  bool AES;
-  bool SHA;
-
-  VENDOR cpu_vendor;
-  
-  char* cpu_name;
-  //  Max cpuids levels
-  uint32_t maxLevels;
-  // Max cpuids extended levels
-  uint32_t maxExtendedLevels;
-};
-
-struct cache {
-  int32_t L1i;
-  int32_t L1d;
-  int32_t L2;
-  int32_t L3;
-};
-
-struct frequency {
-  int64_t base;
-  int64_t max;
-};
-
-void init_cpu_info(struct cpuInfo* cpu) {
-  cpu->AVX    = false;
-  cpu->AVX2   = false;
-  cpu->AVX512 = false;
-  cpu->SSE    = false;
-  cpu->SSE2   = false;
-  cpu->SSE3   = false;
-  cpu->SSSE3  = false;
-  cpu->SSE4a  = false;
-  cpu->SSE4_1 = false;
-  cpu->SSE4_2 = false;
-  cpu->FMA3   = false;
-  cpu->FMA4   = false;
-  cpu->AES    = false;
-  cpu->SHA    = false;
-}
-
-void init_topology_struct(struct topology** topo) {
-  (*topo)->total_cores = 0;
-  (*topo)->physical_cores = 0;
-  (*topo)->logical_cores = 0;
-  (*topo)->smt_available = 0;
-  (*topo)->smt_supported = 0;
-  (*topo)->sockets = 0;
-}
-
-void get_cpu_vendor_internal(char* name, uint32_t ebx,uint32_t ecx,uint32_t edx) {
-  name[__COUNTER__] = ebx       & MASK;
-  name[__COUNTER__] = (ebx>>8)  & MASK;
-  name[__COUNTER__] = (ebx>>16) & MASK;
-  name[__COUNTER__] = (ebx>>24) & MASK;
-
-  name[__COUNTER__] = edx       & MASK;
-  name[__COUNTER__] = (edx>>8)  & MASK;
-  name[__COUNTER__] = (edx>>16) & MASK;
-  name[__COUNTER__] = (edx>>24) & MASK;
-
-  name[__COUNTER__] = ecx       & MASK;
-  name[__COUNTER__] = (ecx>>8)  & MASK;
-  name[__COUNTER__] = (ecx>>16) & MASK;
-  name[__COUNTER__] = (ecx>>24) & MASK;
-}
-
-char* get_str_cpu_name_internal() {
-  uint32_t eax = 0;
-  uint32_t ebx = 0;
-  uint32_t ecx = 0;
-  uint32_t edx = 0;
-  uint32_t c = 0;
-  
-  char * name = malloc(sizeof(char) * CPU_NAME_MAX_LENGTH);
-  memset(name, 0, CPU_NAME_MAX_LENGTH);
-  
-  for(int i=0; i < 3; i++) {    
-    eax = 0x80000002 + i;
-    cpuid(&eax, &ebx, &ecx, &edx);
-  
-    name[c++] = eax       & MASK;
-    name[c++] = (eax>>8)  & MASK;
-    name[c++] = (eax>>16) & MASK;
-    name[c++] = (eax>>24) & MASK;
-    name[c++] = ebx       & MASK;
-    name[c++] = (ebx>>8)  & MASK;
-    name[c++] = (ebx>>16) & MASK;
-    name[c++] = (ebx>>24) & MASK;
-    name[c++] = ecx       & MASK;
-    name[c++] = (ecx>>8)  & MASK;
-    name[c++] = (ecx>>16) & MASK;
-    name[c++] = (ecx>>24) & MASK;
-    name[c++] = edx       & MASK;
-    name[c++] = (edx>>8)  & MASK;
-    name[c++] = (edx>>16) & MASK;
-    name[c++] = (edx>>24) & MASK;        
-  }
-  name[c] = '\0';
-  
-  //Remove unused characters  
-  char *str = name;
-  char *dest = name;
-  // Remove spaces before name
-  while (*str != '\0' && *str == ' ')str++; 
-  // Remove spaces between the name and after it
-  while (*str != '\0') {
-    while (*str == ' ' && *(str + 1) == ' ') str++;
-    *dest++ = *str++;
-  }
-  *dest = '\0';
-  
-  return name;
-}
-
-struct cpuInfo* get_cpu_info() {
-  struct cpuInfo* cpu = malloc(sizeof(struct cpuInfo));
-  init_cpu_info(cpu);
-  uint32_t eax = 0;
-  uint32_t ebx = 0;
-  uint32_t ecx = 0;
-  uint32_t edx = 0;
-
-  //Get max cpuid level
-  cpuid(&eax, &ebx, &ecx, &edx);
-  cpu->maxLevels = eax;
-
-  //Fill vendor
-  char name[13];
-  memset(name,0,13);
-  get_cpu_vendor_internal(name, ebx, ecx, edx);
-  
-  if(strcmp(VENDOR_INTEL_STRING,name) == 0)
-    cpu->cpu_vendor = VENDOR_INTEL;
-  else if (strcmp(VENDOR_AMD_STRING,name) == 0)
-    cpu->cpu_vendor = VENDOR_AMD;  
-  else {
-    cpu->cpu_vendor = VENDOR_INVALID;
-    printErr("Unknown CPU vendor: %s", name);
-    return NULL;
-  }
-
-  //Get max extended level
-  eax = 0x80000000;
-  ebx = 0;
-  ecx = 0;
-  edx = 0;
-  cpuid(&eax, &ebx, &ecx, &edx);
-  cpu->maxExtendedLevels = eax;  
-
-  //Fill instructions support
-  if (cpu->maxLevels >= 0x00000001){
-    eax = 0x00000001;
-    cpuid(&eax, &ebx, &ecx, &edx);
-    cpu->SSE    = (edx & ((int)1 << 25)) != 0;
-    cpu->SSE2   = (edx & ((int)1 << 26)) != 0;
-    cpu->SSE3   = (ecx & ((int)1 <<  0)) != 0;
-
-    cpu->SSSE3  = (ecx & ((int)1 <<  9)) != 0;
-    cpu->SSE4_1 = (ecx & ((int)1 << 19)) != 0;
-    cpu->SSE4_2 = (ecx & ((int)1 << 20)) != 0;
-
-    cpu->AES    = (ecx & ((int)1 << 25)) != 0;
-
-    cpu->AVX    = (ecx & ((int)1 << 28)) != 0;
-    cpu->FMA3   = (ecx & ((int)1 << 12)) != 0;
-  }
-  else {
-    printWarn("Can't read features information from cpuid (needed level is 0x%.8X, max is 0x%.8X)", 0x00000001, cpu->maxLevels);
-  }
-  
-  if (cpu->maxLevels >= 0x00000007){
-    eax = 0x00000007;
-    ecx = 0x00000000;
-    cpuid(&eax, &ebx, &ecx, &edx);
-    cpu->AVX2         = (ebx & ((int)1 <<  5)) != 0;
-    cpu->SHA          = (ebx & ((int)1 << 29)) != 0;
-    cpu->AVX512       = (((ebx & ((int)1 << 16)) != 0) ||
-                        ((ebx & ((int)1 << 28)) != 0)  ||
-                        ((ebx & ((int)1 << 26)) != 0)  ||
-                        ((ebx & ((int)1 << 27)) != 0)  ||
-                        ((ebx & ((int)1 << 31)) != 0)  ||
-                        ((ebx & ((int)1 << 30)) != 0)  ||
-                        ((ebx & ((int)1 << 17)) != 0)  ||
-                        ((ebx & ((int)1 << 21)) != 0));
-  }
-  else {
-    printWarn("Can't read features information from cpuid (needed level is 0x%.8X, max is 0x%.8X)", 0x00000007, cpu->maxLevels);    
-  }
-  
-  if (cpu->maxExtendedLevels >= 0x80000001){
-    eax = 0x80000001;
-    cpuid(&eax, &ebx, &ecx, &edx);
-    cpu->SSE4a = (ecx & ((int)1 <<  6)) != 0;
-    cpu->FMA4  = (ecx & ((int)1 << 16)) != 0;
-  }
-  else {
-    printWarn("Can't read features information from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x80000001, cpu->maxExtendedLevels);        
-  }
-  
-  if (cpu->maxExtendedLevels >= 0x80000004){
-    cpu->cpu_name = get_str_cpu_name_internal();
-  }
-  else {    
-    cpu->cpu_name = malloc(sizeof(char)*8);
-    sprintf(cpu->cpu_name,"Unknown");
-    printWarn("Can't read cpu name from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x80000004, cpu->maxExtendedLevels);        
-  }
-
-  return cpu;
-}
-
-// Main reference: https://software.intel.com/content/www/us/en/develop/articles/intel-64-architecture-processor-topology-enumeration.html
-// Very interesting resource: https://wiki.osdev.org/Detecting_CPU_Topology_(80x86)
-struct topology* get_topology_info(struct cpuInfo* cpu) {
-  struct topology* topo = malloc(sizeof(struct topology));
-  topo->apic = malloc(sizeof(struct apic));
-  init_topology_struct(&topo);
-  uint32_t eax = 0;
-  uint32_t ebx = 0;
-  uint32_t ecx = 0;
-  uint32_t edx = 0;
-  
-  // Ask the OS the total number of cores it sees
-  // If we have one socket, it will be same as the cpuid,
-  // but in dual socket it will not!
-  // TODO: Replace by apic?
-  #ifdef _WIN32
-    SYSTEM_INFO info;
-    GetSystemInfo(&info);
-    topo->total_cores = info.dwNumberOfProcessors;
-  #else
-    if((topo->total_cores = sysconf(_SC_NPROCESSORS_ONLN)) == -1) {
-      perror("sysconf");
-      topo->total_cores = topo->logical_cores; // fallback
-    }    
-  #endif 
-  
-  switch(cpu->cpu_vendor) {
-    case VENDOR_INTEL:
-      if (cpu->maxLevels >= 0x00000004) { 
-        get_topology_from_apic(cpu->maxLevels, &topo);
-      }
-      else {                
-        printErr("Can't read topology information from cpuid (needed level is 0x%.8X, max is 0x%.8X)", 0x00000001, cpu->maxLevels); 
-        topo->physical_cores = 1;
-        topo->logical_cores = 1;
-        topo->smt_available = 1;
-        topo->smt_supported = 1;
-      }      
-      break;
-    case VENDOR_AMD:  
-      if (cpu->maxExtendedLevels >= 0x80000008) {
-        eax = 0x80000008;  
-        cpuid(&eax, &ebx, &ecx, &edx);        
-        topo->logical_cores = (ecx & 0xFF) + 1;
- 
-        if (cpu->maxExtendedLevels >= 0x8000001E) {
-          eax = 0x8000001E;  
-          cpuid(&eax, &ebx, &ecx, &edx);
-          topo->smt_supported = ((ebx >> 8) & 0x03) + 1;          
-        }
-        else {
-          printWarn("Can't read topology information from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x8000001E, cpu->maxExtendedLevels); 
-          topo->smt_supported = 1;       
-        }        
-      }
-      else {
-        printErr("Can't read topology information from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x80000008, cpu->maxExtendedLevels); 
-        topo->physical_cores = 1;
-        topo->logical_cores = 1;
-        topo->smt_supported = 1;         
-      }
-      if (cpu->maxLevels >= 0x0000000B) {
-        topo->smt_available = is_smt_enabled(topo);
-      }
-      else {
-        printWarn("Can't read topology information from cpuid (needed level is 0x%.8X, max is 0x%.8X)", 0x0000000B, cpu->maxLevels);   
-        topo->smt_available = 1;
-      }
-      topo->physical_cores = topo->logical_cores / topo->smt_available;
-      
-      if(topo->smt_supported > 1)
-        topo->sockets = topo->total_cores / topo->smt_supported / topo->physical_cores; // Idea borrowed from lscpu
-      else
-        topo->sockets = topo->total_cores / topo->physical_cores;
-      
-      break;
-    default:
-      printBug("Cant get topology because VENDOR is empty");
-      return NULL;
-  }
-    
-  return topo;
-}
-
-struct cache* get_cache_info(struct cpuInfo* cpu) {
-  struct cache* cach = malloc(sizeof(struct cache));    
-  uint32_t eax = 0;
-  uint32_t ebx = 0;
-  uint32_t ecx = 0;
-  uint32_t edx = 0;
-  uint32_t level;
-
-  // We use standart 0x00000004 for Intel
-  // We use extended 0x8000001D for AMD
-  if(cpu->cpu_vendor == VENDOR_INTEL) {
-    level = 0x00000004;
-    if(cpu->maxLevels < level) {
-      printErr("Can't read cache information from cpuid (needed level is %d, max is %d)", level, cpu->maxLevels);    
-      return NULL;
-    }
-  }
-  else {
-    level = 0x8000001D;
-    if(cpu->maxExtendedLevels < level) {
-      printErr("Can't read cache information from cpuid (needed extended level is %d, max is %d)", level, cpu->maxExtendedLevels);    
-      return NULL;
-    }
-  }
-  
-  // We suppose there are 4 caches (at most)
-  for(int i=0; i < 4; i++) {
-    eax = level; // get cache info
-    ebx = 0;
-    ecx = i; // cache id
-    edx = 0;
-      
-    cpuid(&eax, &ebx, &ecx, &edx); 
-      
-    int32_t cache_type = eax & 0x1F;
-      
-    // If its 0, we tried fetching a non existing cache
-    if (cache_type > 0) {
-      int32_t cache_level = (eax >>= 5) & 0x7;
-      uint32_t cache_sets = ecx + 1;
-      uint32_t cache_coherency_line_size = (ebx & 0xFFF) + 1;
-      uint32_t cache_physical_line_partitions = ((ebx >>= 12) & 0x3FF) + 1;
-      uint32_t cache_ways_of_associativity = ((ebx >>= 10) & 0x3FF) + 1;
-        
-      int32_t cache_total_size = cache_ways_of_associativity * cache_physical_line_partitions * cache_coherency_line_size * cache_sets;  
-        
-      switch (cache_type) {
-        case 1: // Data Cache (We assume this is L1d)
-          if(cache_level != 1) {
-            printBug("Found data cache at level %d (expected 1)", cache_level);
-            return NULL;
-          }
-          cach->L1d = cache_total_size; 
-          break;
-            
-        case 2: // Instruction Cache (We assume this is L1i)
-          if(cache_level != 1) {
-            printBug("Found instruction cache at level %d (expected 1)", cache_level);
-            return NULL;
-          }
-          cach->L1i = cache_total_size;
-          break;
-          
-        case 3: // Unified Cache (This may be L2 or L3)
-          if(cache_level == 2) cach->L2 = cache_total_size;
-          else if(cache_level == 3) cach->L3 = cache_total_size;
-          else {
-            printBug("Found unified cache at level %d (expected == 2 or 3)", cache_level);
-            return NULL;
-          }
-          break;
-          
-        default: // Unknown Type Cache
-          printBug("Unknown Type Cache found at ID %d", i);
-          return NULL;
-      }
-    }    
-    else if(i == 2) cach->L2 = UNKNOWN;
-    else if(i == 3) cach->L3 = UNKNOWN; 
-    else {
-      printBug("Could not find cache ID %d", i);
-      return NULL;    
-    }    
-  }
-  
-  // Sanity checks. If we read values greater than this, they can't be valid ones
-  // The values were chosen by me
-  if(cach->L1i > 64 * 1024) {
-    printBug("Invalid L1i size: %dKB", cach->L1i/1024);
-    return NULL;
-  }
-  if(cach->L1d > 64 * 1024) {
-    printBug("Invalid L1d size: %dKB", cach->L1d/1024);
-    return NULL;
-  }
-  if(cach->L2 != UNKNOWN) {
-    if(cach->L3 != UNKNOWN && cach->L2 > 2 * 1048576) {
-      printBug("Invalid L2 size: %dMB", cach->L2/(1048576));
-      return NULL;
-    }
-    else if(cach->L2 > 100 * 1048576) {
-      printBug("Invalid L2 size: %dMB", cach->L2/(1048576));
-      return NULL;
-    }
-  }
-  if(cach->L3 != UNKNOWN && cach->L3 > 100 * 1048576) {
-    printBug("Invalid L3 size: %dMB", cach->L3/(1048576));
-    return NULL;
-  }
-  if(cach->L2 == UNKNOWN) {
-    printBug("Could not find L2 cache");
-    return NULL;    
-  }
-  
-  return cach;
-}
-
-struct frequency* get_frequency_info(struct cpuInfo* cpu) {
-  struct frequency* freq = malloc(sizeof(struct frequency));
-  
-  if(cpu->maxLevels < 0x16) {
-    #ifdef _WIN32
-      printErr("Can't read frequency information from cpuid (needed level is %d, max is %d)", 0x16, cpu->maxLevels);
-      freq->base = UNKNOWN;
-      freq->max = UNKNOWN;
-    #else
-      printWarn("Can't read frequency information from cpuid (needed level is %d, max is %d). Using udev", 0x16, cpu->maxLevels);
-      freq->base = UNKNOWN;
-      freq->max = get_max_freq_from_file();
-    #endif
-  }
-  else {
-    uint32_t eax = 0x16;
-    uint32_t ebx = 0;
-    uint32_t ecx = 0;
-    uint32_t edx = 0;
-    
-    cpuid(&eax, &ebx, &ecx, &edx);
-    
-    freq->base = eax;
-    freq->max = ebx;    
-  }
-  
-  return freq;
-}
-
-uint32_t get_nsockets(struct topology* topo) {
-  return topo->sockets;    
-}
-
-int64_t get_freq(struct frequency* freq) {
-  return freq->max;
-}
-
-VENDOR get_cpu_vendor(struct cpuInfo* cpu) {
-  return cpu->cpu_vendor;
-}
-
-void debug_cpu_info(struct cpuInfo* cpu) {
-  printf("AVX=%s\n", cpu->AVX ? "true" : "false");
-  printf("AVX2=%s\n", cpu->AVX2 ? "true" : "false");
-  printf("AVX512=%s\n\n", cpu->AVX512 ? "true" : "false");
-
-  printf("SSE=%s\n", cpu->SSE ? "true" : "false");
-  printf("SSE2=%s\n", cpu->SSE2 ? "true" : "false");
-  printf("SSE3=%s\n", cpu->SSE3 ? "true" : "false");
-  printf("SSSE3=%s\n", cpu->SSSE3 ? "true" : "false");
-  printf("SSE4a=%s\n", cpu->SSE4a ? "true" : "false");
-  printf("SSE4_1=%s\n", cpu->SSE4_1 ? "true" : "false");
-  printf("SSE4_2=%s\n\n", cpu->SSE4_2 ? "true" : "false");
-
-  printf("FMA3=%s\n", cpu->FMA3 ? "true" : "false");
-  printf("FMA4=%s\n\n", cpu->FMA4 ? "true" : "false");
-
-  printf("AES=%s\n", cpu->AES ? "true" : "false");
-  printf("SHA=%s\n", cpu->SHA ? "true" : "false");
-}
-
-void debug_cache(struct cache* cach) {
-  printf("L1i=%dB\n",cach->L1i);
-  printf("L1d=%dB\n",cach->L1d);
-  printf("L2=%dB\n",cach->L2);
-  printf("L3=%dB\n",cach->L3);
-}
-
-void debug_frequency(struct frequency* freq) {
-  #ifdef _WIN32
-    printf("maxf=%I64d Mhz\n",freq->max);
-    printf("basef=%I64d Mhz\n",freq->base);
-  #else
-    printf("maxf=%ld Mhz\n",freq->max);
-    printf("basef=%ld Mhz\n",freq->base);
-  #endif
-}
-
-/*** STRING FUNCTIONS ***/
-
-char* get_str_peak_performance(struct cpuInfo* cpu, struct topology* topo, int64_t freq) {
-  /***
-  PP = PeakPerformance
-  SP = SinglePrecision
-
-  PP(SP) =
-  N_CORES                             *
-  FREQUENCY                           *
-  2(Two vector units)                 *
-  2(If cpu has fma)                   *
-  16(If AVX512), 8(If AVX), 4(If SSE) *
-
-  ***/
-
-  //7 for GFLOP/s and 6 for digits,eg 412.14
-  uint32_t size = 7+6+1+1;
-  assert(strlen(STRING_UNKNOWN)+1 <= size);
-  char* string = malloc(sizeof(char)*size);
-
-  //First check we have consistent data
-  if(freq == UNKNOWN) {
-    snprintf(string,strlen(STRING_UNKNOWN)+1,STRING_UNKNOWN);
-    return string;
-  }
-
-  double flops = topo->physical_cores*(freq*1000000);
-  
-  // Intel USUALLY has two VPUs. I have never seen an AMD 
-  // with two VPUs.
-  if(cpu->cpu_vendor == VENDOR_INTEL) flops = flops * 2; 
-
-  if(cpu->FMA3 || cpu->FMA4)
-    flops = flops*2;
-
-  if(cpu->AVX512)
-    flops = flops*16;
-  else if(cpu->AVX || cpu->AVX2)
-    flops = flops*8;
-  else if(cpu->SSE)
-    flops = flops*4;
-
-  if(flops >= (double)1000000000000.0)
-    snprintf(string,size,"%.2f TFLOP/s",flops/1000000000000);
-  else if(flops >= 1000000000.0)
-    snprintf(string,size,"%.2f GFLOP/s",flops/1000000000);
-  else
-    snprintf(string,size,"%.2f MFLOP/s",flops/1000000);
-  return string;
-}
-
-// TODO: Refactoring
-char* get_str_topology(struct cpuInfo* cpu, struct topology* topo, bool dual_socket) {
-  char* string;
-  if(topo->smt_supported > 1) {
-    //3 for digits, 21 for ' cores (SMT disabled)' which is the longest possible output
-    uint32_t size = 3+21+1;
-    string = malloc(sizeof(char)*size);
-    if(dual_socket) {
-      if(topo->smt_available > 1)
-        snprintf(string, size, "%d cores (%d threads)",topo->physical_cores * topo->sockets, topo->logical_cores * topo->sockets);
-      else {
-        if(cpu->cpu_vendor == VENDOR_AMD)
-          snprintf(string, size, "%d cores (SMT disabled)",topo->physical_cores * topo->sockets);
-        else
-          snprintf(string, size, "%d cores (HT disabled)",topo->physical_cores * topo->sockets);
-      }
-    }
-    else {
-      if(topo->smt_available > 1)
-        snprintf(string, size, "%d cores (%d threads)",topo->physical_cores,topo->logical_cores);
-      else {
-        if(cpu->cpu_vendor == VENDOR_AMD)
-          snprintf(string, size, "%d cores (SMT disabled)",topo->physical_cores);
-        else
-          snprintf(string, size, "%d cores (HT disabled)",topo->physical_cores);
-      }
-    }
-  }
-  else {
-    uint32_t size = 3+7+1;
-    string = malloc(sizeof(char)*size);
-    if(dual_socket)
-      snprintf(string, size, "%d cores",topo->physical_cores * topo->sockets);
-    else
-      snprintf(string, size, "%d cores",topo->physical_cores);
-  }
-  return string;
-}
-
-char* get_str_sockets(struct topology* topo) {
-  char* string = malloc(sizeof(char) * 2);
-  int32_t sanity_ret = snprintf(string, 2, "%d", topo->sockets);
-  if(sanity_ret < 0) {
-    printBug("get_str_sockets: snprintf returned a negative value for input: '%d'", topo->sockets);
-    return NULL;    
-  }
-  return string;
-}
-
-char* get_str_cpu_name(struct cpuInfo* cpu) {
-  return cpu->cpu_name;    
-}
-
-char* get_str_avx(struct cpuInfo* cpu) {
-  //If all AVX are available, it will use up to 15
-  char* string = malloc(sizeof(char)*15+1);
-  if(!cpu->AVX)
-    snprintf(string,2+1,"No");
-  else if(!cpu->AVX2)
-    snprintf(string,3+1,"AVX");
-  else if(!cpu->AVX512)
-    snprintf(string,8+1,"AVX,AVX2");
-  else
-    snprintf(string,15+1,"AVX,AVX2,AVX512");
-
-  return string;
-}
-
-char* get_str_sse(struct cpuInfo* cpu) {
-  uint32_t last = 0;
-  uint32_t SSE_sl = 4;
-  uint32_t SSE2_sl = 5;
-  uint32_t SSE3_sl = 5;
-  uint32_t SSSE3_sl = 6;
-  uint32_t SSE4a_sl = 6;
-  uint32_t SSE4_1_sl = 7;
-  uint32_t SSE4_2_sl = 7;
-  char* string = malloc(sizeof(char)*SSE_sl+SSE2_sl+SSE3_sl+SSSE3_sl+SSE4a_sl+SSE4_1_sl+SSE4_2_sl+1);
-
-  if(cpu->SSE) {
-      snprintf(string+last,SSE_sl+1,"SSE,");
-      last+=SSE_sl;
-  }
-  if(cpu->SSE2) {
-      snprintf(string+last,SSE2_sl+1,"SSE2,");
-      last+=SSE2_sl;
-  }
-  if(cpu->SSE3) {
-      snprintf(string+last,SSE3_sl+1,"SSE3,");
-      last+=SSE3_sl;
-  }
-  if(cpu->SSSE3) {
-      snprintf(string+last,SSSE3_sl+1,"SSSE3,");
-      last+=SSSE3_sl;
-  }
-  if(cpu->SSE4a) {
-      snprintf(string+last,SSE4a_sl+1,"SSE4a,");
-      last+=SSE4a_sl;
-  }
-  if(cpu->SSE4_1) {
-      snprintf(string+last,SSE4_1_sl+1,"SSE4_1,");
-      last+=SSE4_1_sl;
-  }
-  if(cpu->SSE4_2) {
-      snprintf(string+last,SSE4_2_sl+1,"SSE4_2,");
-      last+=SSE4_2_sl;
-  }
-
-  //Purge last comma
-  string[last-1] = '\0';
-  return string;
-}
-
-char* get_str_fma(struct cpuInfo* cpu) {
-  char* string = malloc(sizeof(char)*9+1);
-  if(!cpu->FMA3)
-    snprintf(string,2+1,"No");
-  else if(!cpu->FMA4)
-    snprintf(string,4+1,"FMA3");
-  else
-    snprintf(string,9+1,"FMA3,FMA4");
-
-  return string;
-}
-
-char* get_str_aes(struct cpuInfo* cpu) {
-  char* string = malloc(sizeof(char)*3+1);
-  if(cpu->AES)
-    snprintf(string,3+1,STRING_YES);
-  else
-    snprintf(string,2+1,STRING_NO);
-  return string;
-}
-
-char* get_str_sha(struct cpuInfo* cpu) {
-  char* string = malloc(sizeof(char)*3+1);
-  if(cpu->SHA)
-    snprintf(string,3+1,STRING_YES);
-  else
-    snprintf(string,2+1,STRING_NO);
-  return string;
-}
-
-int32_t get_value_as_smallest_unit(char ** str, uint32_t value) {
-  int32_t sanity_ret;    
-  *str = malloc(sizeof(char)* 11); //8 for digits, 2 for units
-
-  if(value/1024 >= 1024)
-    sanity_ret = snprintf(*str, 10,"%.4g"STRING_MEGABYTES, (double)value/(1<<20));    
-  else
-    sanity_ret = snprintf(*str, 10,"%.4g"STRING_KILOBYTES, (double)value/(1<<10));  
-  
-  return sanity_ret;
-}
-
-// String functions 
-char* get_str_cache_two(int32_t cache_size, uint32_t physical_cores) {
-  // 4 for digits, 2 for units, 2 for ' (', 3 digits, 2 for units and 7 for ' Total)'
-  uint32_t max_size = 4+2 + 2 + 4+2 + 7 + 1;
-  int32_t sanity_ret;
-  char* string = malloc(sizeof(char) * max_size);  
-  char* tmp1;
-  char* tmp2;  
-  int32_t tmp1_len = get_value_as_smallest_unit(&tmp1, cache_size);
-  int32_t tmp2_len = get_value_as_smallest_unit(&tmp2, cache_size * physical_cores);
-  
-  if(tmp1_len < 0) {
-    printBug("get_value_as_smallest_unit: snprintf returned a negative value for input: %d\n", cache_size);
-    return NULL;    
-  }
-  if(tmp2_len < 0) {
-    printBug("get_value_as_smallest_unit: snprintf returned a negative value for input: %d\n", cache_size * physical_cores);
-    return NULL;    
-  }
-    
-  uint32_t size = tmp1_len + 2 + tmp2_len + 7 + 1;
-  sanity_ret = snprintf(string, size, "%s (%s Total)", tmp1, tmp2);  
-  
-  if(sanity_ret < 0) {
-    printBug("get_str_cache_two: snprintf returned a negative value for input: '%s' and '%s'\n", tmp1, tmp2);
-    return NULL;    
-  }
-  
-  free(tmp1);
-  free(tmp2);
-  return string;
-}
-
-char* get_str_cache_one(int32_t cache_size) {
-  // 4 for digits, 2 for units, 2 for ' (', 3 digits, 2 for units and 7 for ' Total)'
-  uint32_t max_size = 4+2 + 1;
-  int32_t sanity_ret;
-  char* string = malloc(sizeof(char) * max_size);  
-  char* tmp;
-  int32_t tmp_len = get_value_as_smallest_unit(&tmp, cache_size);
-  
-  if(tmp_len < 0) {
-    printBug("get_value_as_smallest_unit: snprintf returned a negative value for input: %d", cache_size);
-    return NULL;    
-  }
-      
-  uint32_t size = tmp_len + 1;
-  sanity_ret = snprintf(string, size, "%s", tmp);
-  
-  if(sanity_ret < 0) {
-    printBug("get_str_cache_one: snprintf returned a negative value for input: '%s'", tmp);
-    return NULL;    
-  }
-  free(tmp);
-  return string;
-}
-
-char* get_str_cache(int32_t cache_size, struct topology* topo, bool llc) {
-  if(topo->sockets == 1) {
-    if(llc)
-      return get_str_cache_one(cache_size);
-    else
-      return get_str_cache_two(cache_size, topo->physical_cores);
-  }
-  else {
-    if(llc)
-      return get_str_cache_two(cache_size, topo->sockets);
-    else
-      return get_str_cache_two(cache_size, topo->physical_cores * topo->sockets);
-  }
-}
-
-char* get_str_l1i(struct cache* cach, struct topology* topo) {
-  return get_str_cache(cach->L1i, topo, false);
-}
-
-char* get_str_l1d(struct cache* cach, struct topology* topo) {
-  return get_str_cache(cach->L1d, topo, false);
-}
-
-char* get_str_l2(struct cache* cach, struct topology* topo) {
-  assert(cach->L2 != UNKNOWN);
-  if(cach->L3 == UNKNOWN) 
-    return get_str_cache(cach->L2, topo, true);
-  else
-    return get_str_cache(cach->L2, topo, false);
-}
-
-char* get_str_l3(struct cache* cach, struct topology* topo) {
-  if(cach->L3 == UNKNOWN)
-    return NULL;  
-  return get_str_cache(cach->L3, topo, true);
-}
-
-char* get_str_freq(struct frequency* freq) {
-  //Max 3 digits and 3 for '(M/G)Hz' plus 1 for '\0'
-  uint32_t size = (4+3+1);
-  assert(strlen(STRING_UNKNOWN)+1 <= size);
-  char* string = malloc(sizeof(char)*size);
-  if(freq->max == UNKNOWN)
-    snprintf(string,strlen(STRING_UNKNOWN)+1,STRING_UNKNOWN);
-  else if(freq->max >= 1000)
-    snprintf(string,size,"%.2f"STRING_GIGAHERZ,(float)(freq->max)/1000);
-  else
-    snprintf(string,size,"%.2f"STRING_MEGAHERZ,(float)(freq->max));
-  return string;
-}
-
-void print_levels(struct cpuInfo* cpu, char* cpu_name) {
-  printf("%s\n", cpu_name);
-  printf("- Max standart level: 0x%.8X\n", cpu->maxLevels);
-  printf("- Max extended level: 0x%.8X\n", cpu->maxExtendedLevels);
-}
-
-void free_topo_struct(struct topology* topo) {
-  free(topo);
-}
-
-void free_cache_struct(struct cache* cach) {
-  free(cach);
-}
-
-void free_freq_struct(struct frequency* freq) {
-  free(freq);
-}

src/cpuid.h

@@ -1,68 +0,0 @@
-#ifndef __CPUID__
-#define __CPUID__
-
-#include <stdint.h>
-
-#define VENDOR_EMPTY   0
-#define VENDOR_INTEL   1
-#define VENDOR_AMD     2
-#define VENDOR_INVALID 3
-
-#define UNKNOWN -1
-
-struct cpuInfo;
-struct frequency;
-struct cache;
-
-struct topology {
-  int64_t total_cores;
-  uint32_t physical_cores;
-  uint32_t logical_cores;
-  uint32_t smt_available; // Number of SMT that is currently enabled 
-  uint32_t smt_supported; // Number of SMT that CPU supports (equal to smt_available if SMT is enabled)
-  uint32_t sockets;  
-  struct apic* apic;
-};
-
-typedef int32_t VENDOR;
-
-struct cpuInfo* get_cpu_info();
-VENDOR get_cpu_vendor(struct cpuInfo* cpu);
-uint32_t get_nsockets(struct topology* topo);
-int64_t get_freq(struct frequency* freq);
-struct cache* get_cache_info(struct cpuInfo* cpu);
-struct frequency* get_frequency_info(struct cpuInfo* cpu);
-struct topology* get_topology_info(struct cpuInfo* cpu);
-
-char* get_str_cpu_name(struct cpuInfo* cpu);
-char* get_str_ncores(struct cpuInfo* cpu);
-char* get_str_avx(struct cpuInfo* cpu);
-char* get_str_sse(struct cpuInfo* cpu);
-char* get_str_fma(struct cpuInfo* cpu);
-char* get_str_aes(struct cpuInfo* cpu);
-char* get_str_sha(struct cpuInfo* cpu);
-
-char* get_str_l1i(struct cache* cach, struct topology* topo);
-char* get_str_l1d(struct cache* cach, struct topology* topo);
-char* get_str_l2(struct cache* cach, struct topology* topo);
-char* get_str_l3(struct cache* cach, struct topology* topo);
-
-char* get_str_freq(struct frequency* freq);
-
-char* get_str_sockets(struct topology* topo);
-char* get_str_topology(struct cpuInfo* cpu, struct topology* topo, bool dual_socket);
-
-char* get_str_peak_performance(struct cpuInfo* cpu, struct topology* topo, int64_t freq);
-
-void print_levels(struct cpuInfo* cpu, char* cpu_name);
-
-void free_cpuinfo_struct(struct cpuInfo* cpu);
-void free_cache_struct(struct cache* cach);
-void free_topo_struct(struct topology* topo);
-void free_freq_struct(struct frequency* freq);
-
-void debug_cpu_info(struct cpuInfo* cpu);
-void debug_cache(struct cache* cach);
-void debug_frequency(struct frequency* freq);
-
-#endif

src/global.c

@@ -1,60 +0,0 @@
-#include <stdarg.h>
-#include <stdio.h>
-#include "global.h"
-
-#ifdef _WIN32
-
-#define RED   ""
-#define BOLD  ""
-#define RESET ""
-
-#else
-
-#define RED "\x1b[31;1m"
-#define BOLD "\x1b[;1m"
-#define RESET "\x1b[0m"
-
-#endif
-
-#define LOG_LEVEL_NORMAL  0
-#define LOG_LEVEL_VERBOSE 1
-
-int LOG_LEVEL;
-
-void printWarn(const char *fmt, ...) {
-  if(LOG_LEVEL == LOG_LEVEL_VERBOSE) {
-    int buffer_size = 4096;
-    char buffer[buffer_size];
-    va_list args;
-    va_start(args, fmt);
-    vsnprintf(buffer,buffer_size, fmt, args);
-    va_end(args);
-    fprintf(stderr,BOLD "[WARNING]: "RESET "%s\n",buffer);
-  }
-}
-
-void printErr(const char *fmt, ...) {
-  int buffer_size = 4096;
-  char buffer[buffer_size];
-  va_list args;
-  va_start(args, fmt);
-  vsnprintf(buffer,buffer_size, fmt, args);
-  va_end(args);
-  fprintf(stderr,RED "[ERROR]: "RESET "%s\n",buffer);
-}
-
-void printBug(const char *fmt, ...) {
-  int buffer_size = 4096;
-  char buffer[buffer_size];
-  va_list args;
-  va_start(args, fmt);
-  vsnprintf(buffer,buffer_size, fmt, args);
-  va_end(args);
-  fprintf(stderr,RED "[ERROR]: "RESET "%s\n",buffer);
-  fprintf(stderr,"Please, create a new issue with this error message and your CPU in https://github.com/Dr-Noob/cpufetch/issues\n");
-}
-
-void set_log_level(bool verbose) {
-  if(verbose) LOG_LEVEL = LOG_LEVEL_VERBOSE;
-  else LOG_LEVEL = LOG_LEVEL_NORMAL;
-}

src/global.h

@@ -1,11 +0,0 @@
-#ifndef __GLOBAL__
-#define __GLOBAL__
-
-#include <stdbool.h>
-
-void set_log_level(bool verbose);
-void printWarn(const char *fmt, ...);
-void printErr(const char *fmt, ...);
-void printBug(const char *fmt, ...);
-
-#endif

src/main.c

@@ -1,74 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "args.h"
-#include "printer.h"
-#include "cpuid.h"
-#include "global.h"
-
-static const char* VERSION = "0.6";
-
-void print_help(char *argv[]) {
-  printf("Usage: %s [--version] [--help] [--levels] [--style fancy|retro|legacy] [--color 'R,G,B:R,G,B:R,G,B:R,G,B']\n\
-Options: \n\
-  --color    Set a custom color scheme. 4 colors must be specified in RGB with the format: R,G,B:R,G,B:...\n\
-             These colors correspond to the ASCII art color (2 colors) and for the text colors (next 2)\n\
-             Suggested color (Intel): --color 15,125,194:230,230,230:40,150,220:230,230,230\n\
-             Suggested color (AMD):   --color 250,250,250:0,154,102:250,250,250:0,154,102\n\
-  --style    Set the style of the ASCII art:\n\
-    * fancy \n\
-    * retro \n\
-    * legacy \n\
-  --help     Prints this help and exit\n\
-  --levels   Prints CPU model and cpuid levels (debug purposes)\n\
-  --version  Prints cpufetch version and exit\n",
-  argv[0]);
-}
-
-void print_version() {
-  printf("cpufetch v%s\n",VERSION);
-}
-
-int main(int argc, char* argv[]) {
-  if(!parse_args(argc,argv))
-    return EXIT_FAILURE;
-
-  if(show_help()) {
-    print_help(argv);
-    return EXIT_SUCCESS;
-  }
-
-  if(show_version()) {
-    print_version();
-    return EXIT_SUCCESS;
-  }
-  
-  set_log_level(verbose_enabled());
-
-  struct cpuInfo* cpu = get_cpu_info();
-  if(cpu == NULL)
-    return EXIT_FAILURE;
-  
-  if(show_levels()) {
-    print_version();
-    print_levels(cpu, get_str_cpu_name(cpu));
-    return EXIT_SUCCESS;    
-  }
-
-  struct cache* cach = get_cache_info(cpu);
-  if(cach == NULL)
-    return EXIT_FAILURE;
-  
-  struct frequency* freq = get_frequency_info(cpu);
-  if(freq == NULL)
-    return EXIT_FAILURE;
-  
-  struct topology* topo = get_topology_info(cpu);
-  if(topo == NULL)
-    return EXIT_FAILURE;
-  
-  if(print_cpufetch(cpu, cach, freq, topo, get_style(), get_colors()))  
-    return EXIT_SUCCESS;
-  else
-    return EXIT_FAILURE;
-}

src/ppc/ppc.c

@@ -0,0 +1,276 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include "ppc.h"
+#include "uarch.h"
+#include "udev.h"
+#include "../common/udev.h"
+#include "../common/global.h"
+
+static char *hv_vendors_name[] = {
+  [HV_VENDOR_KVM]       = "KVM",
+  [HV_VENDOR_QEMU]      = "QEMU",
+  [HV_VENDOR_VBOX]      = "VirtualBox",
+  [HV_VENDOR_HYPERV]    = "Microsoft Hyper-V",
+  [HV_VENDOR_VMWARE]    = "VMware",
+  [HV_VENDOR_XEN]       = "Xen",
+  [HV_VENDOR_PARALLELS] = "Parallels",
+  [HV_VENDOR_PHYP]      = "pHyp",
+  [HV_VENDOR_BHYVE]     = "bhyve",
+  [HV_VENDOR_APPLEVZ]   = "Apple VZ",
+  [HV_VENDOR_INVALID]   = STRING_UNKNOWN
+};
+
+struct cache* get_cache_info(struct cpuInfo* cpu) {
+  struct cache* cach = emalloc(sizeof(struct cache));
+  init_cache_struct(cach);
+
+  cach->L1i->size = get_l1i_cache_size(0);
+  cach->L1d->size = get_l1d_cache_size(0);
+  cach->L2->size = get_l2_cache_size(0);
+  cach->L3->size = get_l3_cache_size(0);
+
+  if(cach->L1i->size > 0) {
+    cach->L1i->exists = true;
+    cach->L1i->num_caches = get_num_caches_by_level(cpu, 0);
+    cach->max_cache_level = 1;
+  }
+  if(cach->L1d->size > 0) {
+    cach->L1d->exists = true;
+    cach->L1d->num_caches = get_num_caches_by_level(cpu, 1);
+    cach->max_cache_level = 2;
+  }
+  if(cach->L2->size > 0) {
+    cach->L2->exists = true;
+    cach->L2->num_caches = get_num_caches_by_level(cpu, 2);
+    cach->max_cache_level = 3;
+  }
+  if(cach->L3->size > 0) {
+    cach->L3->exists = true;
+    cach->L3->num_caches = get_num_caches_by_level(cpu, 3);
+    cach->max_cache_level = 4;
+  }
+
+  return cach;
+}
+
+struct topology* get_topology_info(struct cache* cach) {
+  struct topology* topo = emalloc(sizeof(struct topology));
+  init_topology_struct(topo, cach);
+
+  // 1. Total cores detection
+  if((topo->total_cores = sysconf(_SC_NPROCESSORS_ONLN)) == -1) {
+    printWarn("sysconf(_SC_NPROCESSORS_ONLN): %s", strerror(errno));
+    topo->total_cores = 1; // fallback
+  }
+
+  // To find physical cores, we use topo->total_cores and core_ids
+  // To find number of sockets, we use package_ids
+  int* core_ids = emalloc(sizeof(int) * topo->total_cores);
+  int* package_ids = emalloc(sizeof(int) * topo->total_cores);
+
+  if(!fill_core_ids_from_sys(core_ids, topo->total_cores)) {
+    printWarn("fill_core_ids_from_sys failed, output may be incomplete/invalid");
+    for(int i=0; i < topo->total_cores; i++) core_ids[i] = 0;
+  }
+
+  if(!fill_package_ids_from_sys(package_ids, topo->total_cores)) {
+    printWarn("fill_package_ids_from_sys failed, output may be incomplete/invalid");
+    for(int i=0; i < topo->total_cores; i++) package_ids[i] = 0;
+    // fill_package_ids_from_sys failed, use udev to try
+    // to find the number of sockets
+    topo->sockets = get_num_sockets_package_cpus(topo);
+    if (topo->sockets == UNKNOWN_DATA) {
+      printWarn("get_num_sockets_package_cpus failed: assuming 1 socket");
+      topo->sockets = 1;
+    }
+  }
+  else {
+    // fill_package_ids_from_sys succeeded, use the
+    // traditional socket detection algorithm
+    int *package_ids_count = emalloc(sizeof(int) * topo->total_cores);
+    for(int i=0; i < topo->total_cores; i++) {
+      package_ids_count[i] = 0;
+    }
+    for(int i=0; i < topo->total_cores; i++) {
+      package_ids_count[package_ids[i]]++;
+    }
+    for(int i=0; i < topo->total_cores; i++) {
+      if(package_ids_count[i] != 0) {
+        topo->sockets++;
+      }
+    }
+    free(package_ids_count);
+  }
+
+  // 3. Physical cores detection
+  int *core_ids_unified = emalloc(sizeof(int) * topo->total_cores);
+  for(int i=0; i < topo->total_cores; i++) {
+    core_ids_unified[i] = -1;
+  }
+  bool found = false;
+  for(int i=0; i < topo->total_cores; i++) {
+    for(int j=0; j < topo->total_cores && !found; j++) {
+      if(core_ids_unified[j] == core_ids[i]) found = true;
+    }
+    if(!found) {
+      core_ids_unified[topo->physical_cores] = core_ids[i];
+      topo->physical_cores++;
+    }
+    found = false;
+  }
+
+  topo->physical_cores = topo->physical_cores / topo->sockets; // only count cores on one socket
+  topo->logical_cores = topo->total_cores / topo->sockets;     // only count threads on one socket
+  topo->smt_supported = topo->logical_cores / topo->physical_cores;
+
+  free(core_ids);
+  free(package_ids);
+  free(core_ids_unified);
+
+  return topo;
+}
+
+static inline uint32_t mfpvr(void) {
+    uint32_t pvr;
+
+    asm ("mfpvr %0"
+         : "=r"(pvr));
+    return pvr;
+}
+
+struct uarch* get_cpu_uarch(struct cpuInfo* cpu) {
+  return get_uarch_from_pvr(cpu->pvr);
+}
+
+struct frequency* get_frequency_info(void) {
+  struct frequency* freq = emalloc(sizeof(struct frequency));
+
+  freq->measured = false;
+  freq->max = get_max_freq_from_file(0);
+  freq->base = get_min_freq_from_file(0);
+
+  if(freq->max == UNKNOWN_DATA) {
+    // If we are unable to find it in the
+    // standard path, try /proc/cpuinfo
+    freq->max = get_frequency_from_cpuinfo();
+  }
+
+  return freq;
+}
+
+int64_t get_peak_performance(struct cpuInfo* cpu, struct topology* topo, int64_t freq) {
+  /*
+   * Not sure about this
+   * PP(SP) = N_CORES * FREQUENCY * 4(If altivec)
+   */
+
+  //First check we have consistent data
+  if(freq == UNKNOWN_DATA) {
+    return -1;
+  }
+
+  struct features* feat = cpu->feat;
+  int64_t flops = topo->physical_cores * topo->sockets * (freq * 1000000);
+  if(feat->altivec) flops = flops * 4;
+
+  // POWER9 has the concept called "slices". Each SMT4 core has two super-slices,
+  // and each super-slice is capable of doing two FLOPS per cycle. In the case of
+  // SMT8, it has 4 super-slices, thus four FLOPS per cycle.
+  if(is_power9(cpu->arch)) {
+    int threads_per_core = topo->logical_cores / topo->physical_cores;
+    flops = flops * (threads_per_core / 2);
+  }
+
+  return flops;
+}
+
+struct hypervisor* get_hp_info(void) {
+  struct hypervisor* hv = emalloc(sizeof(struct hypervisor));
+  hv->present = false;
+
+  // Weird heuristic found in lscpu:
+  // https://github.com/util-linux/util-linux/blob/master/sys-utils/lscpu-virt.c
+  if(access("/proc" _PATH_DT_IBM_PARTIT_NAME, F_OK) == 0 &&
+     access("/proc" _PATH_DT_HMC_MANAGED, F_OK) == 0 &&
+     access("/proc" _PATH_DT_QEMU_WIDTH, F_OK) != 0) {
+    hv->present = true;
+    hv->hv_vendor = HV_VENDOR_PHYP;
+  }
+  else if(is_devtree_compatible("qemu,pseries")) {
+    hv->present = true;
+    hv->hv_vendor = HV_VENDOR_QEMU;
+  }
+
+  hv->hv_name = hv_vendors_name[hv->hv_vendor];
+
+  return hv;
+}
+
+struct cpuInfo* get_cpu_info(void) {
+  struct cpuInfo* cpu = emalloc(sizeof(struct cpuInfo));
+  struct features* feat = emalloc(sizeof(struct features));
+  cpu->feat = feat;
+
+  bool *ptr = &(feat->AES);
+  for(uint32_t i = 0; i < sizeof(struct features)/sizeof(bool); i++, ptr++) {
+    *ptr = false;
+  }
+
+  int len;
+  char* path = emalloc(sizeof(char) * (strlen(_PATH_DT) + strlen(_PATH_DT_PART) + 1));
+  sprintf(path, "%s%s", _PATH_DT, _PATH_DT_PART);
+
+  if((cpu->cpu_name = read_file(path, &len)) == NULL) {
+    printWarn("Could not open '%s'", path);
+  }
+  cpu->pvr = mfpvr();
+  cpu->hv = get_hp_info();
+  cpu->arch = get_cpu_uarch(cpu);
+  cpu->freq = get_frequency_info();
+  cpu->topo = get_topology_info(cpu->cach);
+  cpu->cach = get_cache_info(cpu);
+  feat->altivec = has_altivec(cpu->arch);
+  cpu->peak_performance = get_peak_performance(cpu, cpu->topo, get_freq(cpu->freq));
+
+  return cpu;
+}
+
+char* get_str_altivec(struct cpuInfo* cpu) {
+  char* string = ecalloc(4, sizeof(char));
+
+  if(cpu->feat->altivec) strcpy(string, "Yes");
+  else strcpy(string, "No");
+
+  return string;
+}
+
+char* get_str_topology(struct topology* topo, bool dual_socket) {
+  char* string;
+  if(topo->smt_supported > 1) {
+    uint32_t size = 3+3+17+1;
+    string = emalloc(sizeof(char)*size);
+    if(dual_socket)
+      snprintf(string, size, "%d cores (%d threads)", topo->physical_cores * topo->sockets, topo->logical_cores * topo->sockets);
+    else
+      snprintf(string, size, "%d cores (%d threads)",topo->physical_cores,topo->logical_cores);
+  }
+  else {
+    uint32_t size = 3+7+1;
+    string = emalloc(sizeof(char)*size);
+    if(dual_socket)
+      snprintf(string, size, "%d cores",topo->physical_cores * topo->sockets);
+    else
+      snprintf(string, size, "%d cores",topo->physical_cores);
+  }
+  return string;
+}
+
+
+void print_debug(struct cpuInfo* cpu) {
+  printf("PVR: 0x%.8X\n", cpu->pvr);
+}

src/ppc/ppc.h

@@ -0,0 +1,11 @@
+#ifndef __CPUFETCH_POWERPC__
+#define __CPUFETCH_POWERPC__
+
+#include "../common/cpu.h"
+
+struct cpuInfo* get_cpu_info(void);
+char* get_str_altivec(struct cpuInfo* cpu);
+char* get_str_topology(struct topology* topo, bool dual_socket);
+void print_debug(struct cpuInfo* cpu);
+
+#endif

src/ppc/pvr_kern_to_cpufetch.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+# This script takes as input cputable.c from linux kernel
+# and generates a valid output for cpufetch in src/ppc/uarch.c
+
+CPUTABLE_PATH="linux-5.13.7/arch/powerpc/kernel/cputable.c"
+
+raw_values=$(grep '\.pvr_value' "$CPUTABLE_PATH" | grep -oP "= .*," | cut -d' ' -f2 | tr -d ',')
+raw_masks=$(grep '\.pvr_mask' "$CPUTABLE_PATH" | grep -oE "0x........")
+
+raw_v_len=$(echo "$raw_values" | wc -l)
+raw_m_len=$(echo "$raw_masks" | wc -l)
+
+if [ $raw_v_len -ne $raw_m_len ]
+then
+  echo "Lengths do not match!"
+  echo "values length: $raw_v_len"
+  echo "masks length:  $raw_m_len"
+  exit 1
+fi
+
+IFS=$'\n' read -r -d ' ' -a values <<< "$raw_values"
+IFS=$'\n' read -r -d ' ' -a masks <<< "$raw_masks"
+
+for i in "${!values[@]}"
+do
+  echo '  CHECK_UARCH(arch, pvr, '"${masks[i]}"', '"${values[i]}"', "POWERX", UARCH_POWERX, -1)'
+done

src/ppc/uarch.c

@@ -0,0 +1,300 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "uarch.h"
+#include "../common/global.h"
+
+typedef uint32_t MICROARCH;
+
+// Data not available
+#define NA                   -1
+
+// Unknown manufacturing process
+#define UNK                  -1
+
+enum {
+  UARCH_UNKNOWN,
+  UARCH_PPC604,
+  UARCH_PPCG3,
+  UARCH_PPCG4,
+  UARCH_PPC405,
+  UARCH_PPC603,
+  UARCH_PPC440,
+  UARCH_PPC470,
+  UARCH_ESPRESSO, // Not exactly an uarch, but the codename of Wii U
+  UARCH_PPC970,
+  UARCH_PPC970FX,
+  UARCH_PPC970MP,
+  UARCH_CELLBE,
+  UARCH_POWER5,
+  UARCH_POWER5PLUS,
+  UARCH_POWER6,
+  UARCH_POWER7,
+  UARCH_POWER7PLUS,
+  UARCH_POWER8,
+  UARCH_POWER8_DD21,
+  UARCH_POWER9,
+  UARCH_POWER9_DD20,
+  UARCH_POWER9_DD21,
+  UARCH_POWER9_DD22,
+  UARCH_POWER9_DD23,
+  UARCH_POWER10,
+};
+
+struct uarch {
+  MICROARCH uarch;
+  char* uarch_str;
+  int32_t process; // measured in nanometers
+};
+
+#define UARCH_START if (false) {}
+#define CHECK_UARCH(arch, cpu_pvr, pvr_mask, pvr_value, uarch) \
+   else if ((cpu_pvr & pvr_mask) == pvr_value) fill_uarch(arch, uarch);
+#define UARCH_END else { printBug("Unknown microarchitecture detected: 0x%.8X", pvr); fill_uarch(arch, UARCH_UNKNOWN); }
+
+#define FILL_START if (false) {}
+#define FILL_UARCH(u, uarch, uarch_str, uarch_process) \
+   else if(u == uarch) { fill = true; str = uarch_str; process = uarch_process; }
+#define FILL_END else { printBug("Found invalid microarchitecture: %d", u); }
+
+void fill_uarch(struct uarch* arch, MICROARCH u) {
+  arch->uarch = u;
+  char* str = NULL;
+  int32_t process = UNK;
+  bool fill = false;
+
+  FILL_START
+  FILL_UARCH(arch->uarch, UARCH_UNKNOWN,     STRING_UNKNOWN,  UNK)
+  FILL_UARCH(arch->uarch, UARCH_PPC604,      "PowerPC 604",   500)
+  FILL_UARCH(arch->uarch, UARCH_PPCG3,       "PowerPC G3",    UNK) // varies
+  FILL_UARCH(arch->uarch, UARCH_PPCG4,       "PowerPC G4",    UNK) // varies
+  FILL_UARCH(arch->uarch, UARCH_PPC405,      "PowerPC 405",   UNK)
+  FILL_UARCH(arch->uarch, UARCH_PPC603,      "PowerPC 603",   UNK) // varies
+  FILL_UARCH(arch->uarch, UARCH_PPC440,      "PowerPC 440",   UNK)
+  FILL_UARCH(arch->uarch, UARCH_PPC470,      "PowerPC 470",    45) // strange...
+  FILL_UARCH(arch->uarch, UARCH_ESPRESSO,    "Espresso",       45) // https://en.wikipedia.org/wiki/PowerPC_7xx#Espresso, https://en.wikipedia.org/wiki/Espresso_(processor), https://github.com/Dr-Noob/cpufetch/issues/231
+  FILL_UARCH(arch->uarch, UARCH_PPC970,      "PowerPC 970",   130)
+  FILL_UARCH(arch->uarch, UARCH_PPC970FX,    "PowerPC 970FX",  90)
+  FILL_UARCH(arch->uarch, UARCH_PPC970MP,    "PowerPC 970MP",  90)
+  FILL_UARCH(arch->uarch, UARCH_CELLBE,      "Cell BE",       UNK) // varies depending on manufacturer
+  FILL_UARCH(arch->uarch, UARCH_POWER5,      "POWER5",        130)
+  FILL_UARCH(arch->uarch, UARCH_POWER5PLUS,  "POWER5+",        90)
+  FILL_UARCH(arch->uarch, UARCH_POWER6,      "POWER6",         65)
+  FILL_UARCH(arch->uarch, UARCH_POWER7,      "POWER7",         45)
+  FILL_UARCH(arch->uarch, UARCH_POWER7PLUS,  "POWER7+",        32)
+  FILL_UARCH(arch->uarch, UARCH_POWER8,      "POWER8",         22)
+  FILL_UARCH(arch->uarch, UARCH_POWER8_DD21, "POWER8 (DD2.1)", 22)
+  FILL_UARCH(arch->uarch, UARCH_POWER9,      "POWER9",         14)
+  FILL_UARCH(arch->uarch, UARCH_POWER9_DD20, "POWER9 (DD2.0)", 14)
+  FILL_UARCH(arch->uarch, UARCH_POWER9_DD21, "POWER9 (DD2.1)", 14)
+  FILL_UARCH(arch->uarch, UARCH_POWER9_DD22, "POWER9 (DD2.2)", 14)
+  FILL_UARCH(arch->uarch, UARCH_POWER9_DD23, "POWER9 (DD2.3)", 14)
+  FILL_UARCH(arch->uarch, UARCH_POWER10,     "POWER10",         7)
+  FILL_END
+
+  if(fill) {
+    arch->uarch_str = emalloc(sizeof(char) * (strlen(str)+1));
+    strcpy(arch->uarch_str, str);
+    arch->process= process;
+  }
+}
+
+/*
+ * PVR masks/values from Linux kernel:
+ * - arch/powerpc/kernel/cputable.c            (kernel <= 6.0)
+ * - arch/powerpc/kernel/cpu_specs_book3s_64.h (kernel >= 6.1)
+ *
+ * In the kernel, there is a POWER8E identifier. In
+ * https://wiki.raptorcs.com/wiki/POWER8E it says it is
+ * actually DD2.1, while other POWER8 should be DD2.0.
+ * The last assumption does not seem to be correct according
+ * to https://openbenchmarking.org/s/POWER8NVL, which shows a
+ * POWER8NVL where kernel says it is DD1.0. We implement this
+ * to show only the uarch, not the revision, since it seems a bit
+ * redundant?
+ *
+ * This list may be incorrect, incomplete or overly simplified,
+ * specially in the case of 32 bit entries
+ */
+struct uarch* get_uarch_from_pvr(uint32_t pvr) {
+  struct uarch* arch = emalloc(sizeof(struct uarch));
+
+  UARCH_START
+  // 64 bit
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00390000, UARCH_PPC970)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x003c0000, UARCH_PPC970FX)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x00440100, UARCH_PPC970MP)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00440000, UARCH_PPC970MP)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x003a0000, UARCH_POWER5)
+  CHECK_UARCH(arch, pvr, 0xffffff00, 0x003b0300, UARCH_POWER5PLUS)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x003b0000, UARCH_POWER5)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x0f000001, UARCH_POWER5)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x003e0000, UARCH_POWER6)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x0f000002, UARCH_POWER6)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x0f000003, UARCH_POWER7)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x0f000004, UARCH_POWER8)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x0f000005, UARCH_POWER9)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x0f000006, UARCH_POWER10)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x003f0000, UARCH_POWER7)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x004A0000, UARCH_POWER7PLUS)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x004b0000, UARCH_POWER8_DD21)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x004c0000, UARCH_POWER8)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x004d0000, UARCH_POWER8)
+  CHECK_UARCH(arch, pvr, 0xffffefff, 0x004e0200, UARCH_POWER9_DD20)
+  CHECK_UARCH(arch, pvr, 0xffffefff, 0x004e0201, UARCH_POWER9_DD21)
+  CHECK_UARCH(arch, pvr, 0xffffefff, 0x004e0202, UARCH_POWER9_DD22)
+  CHECK_UARCH(arch, pvr, 0xffffefff, 0x004e0203, UARCH_POWER9_DD23)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00800000, UARCH_POWER10)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00700000, UARCH_CELLBE)
+  // 32 bit
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00040000, UARCH_PPC604)
+  CHECK_UARCH(arch, pvr, 0xfffff000, 0x00090000, UARCH_PPC604)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00090000, UARCH_PPC604)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x000a0000, UARCH_PPC604)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x00084202, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xfffffff0, 0x00080100, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xfffffff0, 0x00082200, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xfffffff0, 0x00082210, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x00083214, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xfffff0e0, 0x00087000, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xfffff000, 0x00083000, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xffffff00, 0x70000100, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x70000200, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x70000000, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x70020000, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00080000, UARCH_PPCG3)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x000c1101, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x000c0000, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x800c0000, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x80000200, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x80000201, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x80000000, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffffff00, 0x80010100, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x80010200, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x80010000, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x80020100, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x80020101, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x80020000, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x80030000, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x80040000, UARCH_PPCG4)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00030000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00060000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00070000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0x7fff0000, 0x00810000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0x7fff0000, 0x00820000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0x7fff0000, 0x00830000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0x7fff0000, 0x00840000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0x7fff0000, 0x00850000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0x7fff0000, 0x00860000, UARCH_PPC603)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x41810000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x41610000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x40B10000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x41410000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x50910000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x51510000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x41F10000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x51210000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x12910007, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x1291000d, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x1291000f, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x12910003, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x12910005, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x12910001, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x12910009, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x1291000b, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x12910000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff000f, 0x12910002, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x41510000, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x7ff11432, UARCH_PPC405)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x40000850, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x40000858, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x400008d3, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000ff7, 0x400008d4, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x400008db, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000ffb, 0x200008D0, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000ffb, 0x200008D8, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x40000440, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x40000481, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x50000850, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x50000851, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x50000892, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xf0000fff, 0x50000894, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xfff00fff, 0x53200891, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xfff00fff, 0x53400890, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xfff00fff, 0x53400891, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xffff0006, 0x13020002, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xffff0007, 0x13020004, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xffff0006, 0x13020000, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xffff0007, 0x13020005, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xffffff00, 0x13541800, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xfffffff0, 0x12C41C80, UARCH_PPC440)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x11a52080, UARCH_PPC470)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x7ff50000, UARCH_PPC470)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x00050000, UARCH_PPC470)
+  CHECK_UARCH(arch, pvr, 0xffff0000, 0x11a50000, UARCH_PPC470)
+  CHECK_UARCH(arch, pvr, 0xffffffff, 0x70010201, UARCH_ESPRESSO)
+  UARCH_END
+
+  return arch;
+}
+
+bool has_altivec(struct uarch* arch) {
+  switch(arch->uarch) {
+    case UARCH_PPC970FX:
+    case UARCH_PPC970MP:
+    case UARCH_CELLBE:
+    case UARCH_POWER6:
+    case UARCH_POWER7:
+    case UARCH_POWER7PLUS:
+    case UARCH_POWER8:
+    case UARCH_POWER8_DD21:
+    case UARCH_POWER9:
+    case UARCH_POWER9_DD20:
+    case UARCH_POWER9_DD21:
+    case UARCH_POWER9_DD22:
+    case UARCH_POWER9_DD23:
+    case UARCH_POWER10:
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool is_power9(struct uarch* arch) {
+  return arch->uarch == UARCH_POWER9      ||
+         arch->uarch == UARCH_POWER9_DD20 ||
+         arch->uarch == UARCH_POWER9_DD21 ||
+         arch->uarch == UARCH_POWER9_DD22 ||
+         arch->uarch == UARCH_POWER9_DD23;
+}
+
+char* get_str_uarch(struct cpuInfo* cpu) {
+  return cpu->arch->uarch_str;
+}
+
+char* get_str_process(struct cpuInfo* cpu) {
+  char* str = emalloc(sizeof(char) * (strlen(STRING_UNKNOWN)+1));
+  int32_t process = cpu->arch->process;
+
+  if(process == UNK) {
+    snprintf(str, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
+  }
+  else if(process > 0){
+    sprintf(str, "%dnm", process);
+  }
+  else {
+    snprintf(str, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
+    printBug("Found invalid process: '%d'", process);
+  }
+
+  return str;
+}
+
+void free_uarch_struct(struct uarch* arch) {
+  free(arch->uarch_str);
+  free(arch);
+}

src/ppc/uarch.h

@@ -0,0 +1,16 @@
+#ifndef __UARCH__
+#define __UARCH__
+
+#include <stdint.h>
+#include "ppc.h"
+
+struct uarch;
+
+struct uarch* get_uarch_from_pvr(uint32_t pvr);
+bool has_altivec(struct uarch* arch);
+bool is_power9(struct uarch* arch);
+char* get_str_uarch(struct cpuInfo* cpu);
+char* get_str_process(struct cpuInfo* cpu);
+void free_uarch_struct(struct uarch* arch);
+
+#endif

src/ppc/udev.c

@@ -0,0 +1,90 @@
+#include <errno.h>
+
+#include "../common/udev.h"
+#include "../common/global.h"
+#include "udev.h"
+
+#define _PATH_TOPO_CORE_ID         "topology/core_id"
+#define _PATH_TOPO_PACKAGE_ID      "topology/physical_package_id"
+#define CPUINFO_FREQUENCY_STR      "clock\t\t: "
+
+bool fill_array_from_sys(int *core_ids, int total_cores, char* SYS_PATH) {
+  int filelen;
+  char* buf;
+  char* end;
+  char path[128];
+  memset(name, 0, sizeof(char) * 128);
+
+  for(int i=0; i < total_cores; i++) {
+    sprintf(path, "%s%s/cpu%d/%s", _PATH_SYS_SYSTEM, _PATH_SYS_CPU, i, SYS_PATH);
+    if((buf = read_file(path, &filelen)) == NULL) {
+      printWarn("fill_array_from_sys: %s: %s", path, strerror(errno));
+      return false;
+    }
+
+    errno = 0;
+    core_ids[i] = strtol(buf, &end, 10);
+    if(errno != 0) {
+      printWarn("fill_array_from_sys: %s:", strerror(errno));
+      return false;
+    }
+    free(buf);
+  }
+
+  return true;
+}
+
+bool fill_core_ids_from_sys(int *core_ids, int total_cores) {
+  return fill_array_from_sys(core_ids, total_cores, _PATH_TOPO_CORE_ID);
+}
+
+bool fill_package_ids_from_sys(int* package_ids, int total_cores) {
+  bool status = fill_array_from_sys(package_ids, total_cores, _PATH_TOPO_PACKAGE_ID);
+  if(status) {
+    // fill_array_from_sys completed successfully, but we
+    // must to check the integrity of the package_ids array
+    for(int i=0; i < total_cores; i++) {
+      if(package_ids[i] == -1) {
+        printWarn("fill_package_ids_from_sys: package_ids[%d] = -1", i);
+        return false;
+      }
+      else if(package_ids[i] >= total_cores || package_ids[i] < 0) {
+        printBug("fill_package_ids_from_sys: package_ids[%d] = %d", i, package_ids[i]);
+        return false;
+      }
+    }
+
+    return true;
+  }
+  return false;
+}
+
+long get_frequency_from_cpuinfo(void) {
+  char* freq_str = get_field_from_cpuinfo(CPUINFO_FREQUENCY_STR);
+  if(freq_str == NULL) {
+    return UNKNOWN_DATA;
+  }
+  else {
+    // freq_str should be in the form XXXX.YYYYYYMHz
+    char* dot = strstr(freq_str, ".");
+    freq_str[dot-freq_str] = '\0';
+
+    char* end;
+    errno = 0;
+    long ret = strtol(freq_str, &end, 10);
+    if(errno != 0) {
+      printBug("strtol: %s", strerror(errno));
+      free(freq_str);
+      return UNKNOWN_DATA;
+    }
+
+    // We consider it an error if frequency is
+    // greater than 10 GHz or less than 100 MHz
+    if(ret > 10000 || ret <  100) {
+      printBug("Invalid data was read from file '%s': %ld\n", CPUINFO_FREQUENCY_STR, ret);
+      return UNKNOWN_DATA;
+    }
+
+    return ret;
+  }
+}

src/ppc/udev.h

@@ -0,0 +1,16 @@
+#ifndef __UDEV_PPC__
+#define __UDEV_PPC__
+
+#include "../common/udev.h"
+#define _PATH_DT                  "/proc/device-tree/vpd/root-node-vpd@a000/enclosure@1e00/backplane@800/processor@1000"
+#define _PATH_DT_PART             "/part-number"
+#define _PATH_DT_IBM_PARTIT_NAME  "/device-tree/ibm,partition-name"
+#define _PATH_DT_HMC_MANAGED      "/device-tree/hmc-managed?"
+#define _PATH_DT_QEMU_WIDTH       "/device-tree/chosen/qemu,graphic-width"
+
+bool fill_core_ids_from_sys(int *core_ids, int total_cores);
+bool fill_package_ids_from_sys(int* package_ids, int total_cores);
+int get_num_sockets_package_cpus(struct topology* topo);
+long get_frequency_from_cpuinfo(void);
+
+#endif

src/printer.c

@@ -1,384 +0,0 @@
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdbool.h>
-
-#include "printer.h"
-#include "ascii.h"
-#include "global.h"
-
-#define COL_NONE          ""
-#define COL_INTEL_FANCY_1 "\x1b[46;1m"
-#define COL_INTEL_FANCY_2 "\x1b[47;1m"
-#define COL_INTEL_FANCY_3 "\x1b[36;1m"
-#define COL_INTEL_FANCY_4 "\x1b[37;1m"
-#define COL_INTEL_RETRO_1 "\x1b[36;1m"
-#define COL_INTEL_RETRO_2 "\x1b[37;1m"
-#define COL_AMD_FANCY_1   "\x1b[47;1m"
-#define COL_AMD_FANCY_2   "\x1b[42;1m"
-#define COL_AMD_FANCY_3   "\x1b[37;1m"
-#define COL_AMD_FANCY_4   "\x1b[32;1m"
-#define COL_AMD_RETRO_1   "\x1b[37;1m"
-#define COL_AMD_RETRO_2   "\x1b[32;1m"
-#define RESET             "\x1b[m"
-
-#define TITLE_NAME        "Name:"
-#define TITLE_FREQUENCY   "Frequency:"
-#define TITLE_SOCKETS     "Sockets:" 
-#define TITLE_NCORES      "Cores:" 
-#define TITLE_NCORES_DUAL "Cores (Total):"
-#define TITLE_AVX         "AVX:"
-#define TITLE_SSE         "SSE:"
-#define TITLE_FMA         "FMA:"
-#define TITLE_AES         "AES:"
-#define TITLE_SHA         "SHA:"
-#define TITLE_L1i         "L1i Size:"
-#define TITLE_L1d         "L1d Size:"
-#define TITLE_L2          "L2 Size:"
-#define TITLE_L3          "L3 Size:"
-#define TITLE_PEAK        "Peak Perf.:"
-
-#define MAX_ATTRIBUTE_COUNT      15
-#define ATTRIBUTE_NAME            0
-#define ATTRIBUTE_FREQUENCY       1
-#define ATTRIBUTE_SOCKETS         2
-#define ATTRIBUTE_NCORES          3
-#define ATTRIBUTE_NCORES_DUAL     4
-#define ATTRIBUTE_AVX             5
-#define ATTRIBUTE_SSE             6
-#define ATTRIBUTE_FMA             7
-#define ATTRIBUTE_AES             8
-#define ATTRIBUTE_SHA             9
-#define ATTRIBUTE_L1i            10
-#define ATTRIBUTE_L1d            11
-#define ATTRIBUTE_L2             12
-#define ATTRIBUTE_L3             13
-#define ATTRIBUTE_PEAK           14
-
-static const char* ATTRIBUTE_FIELDS [MAX_ATTRIBUTE_COUNT] = { TITLE_NAME, TITLE_FREQUENCY, TITLE_SOCKETS,
-                                                              TITLE_NCORES, TITLE_NCORES_DUAL, 
-                                                              TITLE_AVX, TITLE_SSE,
-                                                              TITLE_FMA, TITLE_AES, TITLE_SHA,
-                                                              TITLE_L1i, TITLE_L1d, TITLE_L2, TITLE_L3,
-                                                              TITLE_PEAK
-                                                               };
-
-static const int ATTRIBUTE_LIST[MAX_ATTRIBUTE_COUNT] =  { ATTRIBUTE_NAME, ATTRIBUTE_FREQUENCY, ATTRIBUTE_SOCKETS,
-                                                        ATTRIBUTE_NCORES, ATTRIBUTE_NCORES_DUAL, ATTRIBUTE_AVX,
-                                                        ATTRIBUTE_SSE, ATTRIBUTE_FMA, ATTRIBUTE_AES, ATTRIBUTE_SHA,
-                                                        ATTRIBUTE_L1i, ATTRIBUTE_L1d, ATTRIBUTE_L2, ATTRIBUTE_L3,
-                                                        ATTRIBUTE_PEAK };
-
-struct ascii {
-  char art[NUMBER_OF_LINES][LINE_SIZE];
-  char color1_ascii[100];
-  char color2_ascii[100];
-  char color1_text[100];
-  char color2_text[100];
-  char ascii_chars[2];
-  char reset[100];
-  char* attributes[MAX_ATTRIBUTE_COUNT];
-  uint32_t n_attributes_set;
-  VENDOR vendor;
-};
-
-void setAttribute(struct ascii* art, int type, char* value) {
-  art->attributes[type] = value;  
-  art->n_attributes_set++;
-}
-
-char* rgb_to_ansi(struct color* c, bool background, bool bold) {
-  char* str = malloc(sizeof(char) * 100);
-  if(background) {
-    snprintf(str, 44, "\x1b[48;2;%.3d;%.3d;%.3dm", c->R, c->G, c->B);
-  }
-  else {
-    if(bold)
-      snprintf(str, 48, "\x1b[1m\x1b[38;2;%.3d;%.3d;%.3dm", c->R, c->G, c->B);
-    else
-      snprintf(str, 44, "\x1b[38;2;%.3d;%.3d;%.3dm", c->R, c->G, c->B);
-  }
-  
-  return str;
-}
-
-struct ascii* set_ascii(VENDOR cpuVendor, STYLE style, struct colors* cs) {
-  // Sanity checks //
-  for(int i=0; i < MAX_ATTRIBUTE_COUNT; i++) {
-    if(ATTRIBUTE_FIELDS[i] == NULL) {
-      printBug("Attribute field at position %d is empty", i);    
-      return NULL;
-    }
-    if(i > 0 && ATTRIBUTE_LIST[i] == 0) {
-      printBug("Attribute list at position %d is empty", i);    
-      return NULL;
-    }
-  }
-  
-  char *COL_FANCY_1, *COL_FANCY_2, *COL_FANCY_3, *COL_FANCY_4, *COL_RETRO_1, *COL_RETRO_2, *COL_RETRO_3, *COL_RETRO_4;
-  struct ascii* art = malloc(sizeof(struct ascii));
-  art->n_attributes_set = 0;
-  art->vendor = cpuVendor;
-  for(int i=0; i < MAX_ATTRIBUTE_COUNT; i++)
-    art->attributes[i] = NULL;
-  strcpy(art->reset,RESET);
-  
-  if(cpuVendor == VENDOR_INTEL) {
-    COL_FANCY_1 = COL_INTEL_FANCY_1;
-    COL_FANCY_2 = COL_INTEL_FANCY_2;
-    COL_FANCY_3 = COL_INTEL_FANCY_3;
-    COL_FANCY_4 = COL_INTEL_FANCY_4;
-    COL_RETRO_1 = COL_INTEL_RETRO_1;
-    COL_RETRO_2 = COL_INTEL_RETRO_2;  
-    COL_RETRO_3 = COL_INTEL_RETRO_1;  
-    COL_RETRO_4 = COL_INTEL_RETRO_2;  
-    art->ascii_chars[0] = '#';
-  }
-  else {
-    COL_FANCY_1 = COL_AMD_FANCY_1;
-    COL_FANCY_2 = COL_AMD_FANCY_2;
-    COL_FANCY_3 = COL_AMD_FANCY_3;
-    COL_FANCY_4 = COL_AMD_FANCY_4;
-    COL_RETRO_1 = COL_AMD_RETRO_1;
-    COL_RETRO_2 = COL_AMD_RETRO_2;       
-    COL_RETRO_3 = COL_AMD_RETRO_1;
-    COL_RETRO_4 = COL_AMD_RETRO_2;   
-    art->ascii_chars[0] = '@';    
-  }
-  art->ascii_chars[1] = '#';
-  
-  // If style is emtpy, set the default style
-  if(style == STYLE_EMPTY) {
-    #ifdef _WIN32
-      style = STYLE_LEGACY;
-    #else
-      style = STYLE_FANCY;
-    #endif
-  }
-  
-  switch(style) {
-    case STYLE_LEGACY:
-      strcpy(art->color1_ascii,COL_NONE);
-      strcpy(art->color2_ascii,COL_NONE);  
-      strcpy(art->color1_text,COL_NONE);  
-      strcpy(art->color2_text,COL_NONE);  
-      art->reset[0] = '\0';
-      break;
-    case STYLE_FANCY:
-      if(cs != NULL) {
-        COL_FANCY_1 = rgb_to_ansi(cs->c1, true, true);
-        COL_FANCY_2 = rgb_to_ansi(cs->c2, true, true);
-        COL_FANCY_3 = rgb_to_ansi(cs->c3, false, true);
-        COL_FANCY_4 = rgb_to_ansi(cs->c4, false, true);        
-      } 
-      art->ascii_chars[0] = ' ';
-      art->ascii_chars[1] = ' ';
-      strcpy(art->color1_ascii,COL_FANCY_1);
-      strcpy(art->color2_ascii,COL_FANCY_2);  
-      strcpy(art->color1_text,COL_FANCY_3);  
-      strcpy(art->color2_text,COL_FANCY_4);  
-      if(cs != NULL) {
-        free(COL_FANCY_1);
-        free(COL_FANCY_2);
-        free(COL_FANCY_3);
-        free(COL_FANCY_4);
-      }
-      break;
-    case STYLE_RETRO:  
-      if(cs != NULL) {
-        COL_RETRO_1 = rgb_to_ansi(cs->c1, false, true);
-        COL_RETRO_2 = rgb_to_ansi(cs->c2, false, true);   
-        COL_RETRO_3 = rgb_to_ansi(cs->c3, false, true);
-        COL_RETRO_4 = rgb_to_ansi(cs->c4, false, true);  
-      }   
-      strcpy(art->color1_ascii,COL_RETRO_1);
-      strcpy(art->color2_ascii,COL_RETRO_2);  
-      strcpy(art->color1_text,COL_RETRO_3);  
-      strcpy(art->color2_text,COL_RETRO_4); 
-      if(cs != NULL) {
-        free(COL_RETRO_1);
-        free(COL_RETRO_2);
-        free(COL_RETRO_3);
-        free(COL_RETRO_4);
-      }
-      break;
-    case STYLE_INVALID:  
-    default:
-      printBug("Found invalid style (%d)",style);
-      return NULL;    
-  }
-  
-  char tmp[NUMBER_OF_LINES*LINE_SIZE];
-  if(cpuVendor == VENDOR_INTEL) strcpy(tmp, INTEL_ASCII);    
-  else strcpy(tmp, AMD_ASCII);    
-    for(int i=0; i < NUMBER_OF_LINES; i++)
-      strncpy(art->art[i], tmp + i*LINE_SIZE, LINE_SIZE); 
-    
-  return art;
-}
-
-uint32_t get_next_attribute(struct ascii* art, uint32_t last_attr) {
-  last_attr++;
-  while(art->attributes[last_attr] == NULL) last_attr++;
-  return last_attr;
-}
-
-void print_ascii_intel(struct ascii* art, uint32_t la) {
-  bool flag = false;
-  int attr_to_print = -1;
-  uint32_t space_right;
-  uint32_t space_up = (NUMBER_OF_LINES - art->n_attributes_set)/2;
-  uint32_t space_down = NUMBER_OF_LINES - art->n_attributes_set - space_up;
-
-  for(uint32_t n=0;n<NUMBER_OF_LINES;n++) {
-
-    for(int i=0;i<LINE_SIZE;i++) {
-      if(flag) {
-        if(art->art[n][i] == ' ') {
-          flag = false;
-          printf("%s%c%s", art->color2_ascii, art->ascii_chars[1], art->reset);          
-        }
-        else
-          printf("%s%c%s",  art->color1_ascii, art->ascii_chars[0], art->reset);
-      }
-      else {
-        if(art->art[n][i] != ' ' && art->art[n][i] != '\0') {
-          flag = true;
-          printf("%c",' ');
-        }
-        else
-          printf("%c",' ');
-      }
-    }
-    
-    if(n > space_up-1 && n < NUMBER_OF_LINES-space_down) {      
-      attr_to_print = get_next_attribute(art, attr_to_print);
-      space_right = 1 + (la - strlen(ATTRIBUTE_FIELDS[attr_to_print]));      
-      printf("%s%s%s%*s%s%s%s\n",art->color1_text, ATTRIBUTE_FIELDS[attr_to_print], art->reset, space_right, "", art->color2_text, art->attributes[attr_to_print], art->reset);
-    }
-    else printf("\n");
-  }
-}
-
-void print_ascii_amd(struct ascii* art, uint32_t la) {
-  int attr_to_print = -1;
-  uint32_t space_right;
-  uint32_t space_up = (NUMBER_OF_LINES - art->n_attributes_set)/2;
-  uint32_t space_down = NUMBER_OF_LINES - art->n_attributes_set - space_up;
-  
-  for(uint32_t n=0;n<NUMBER_OF_LINES;n++) {
-    for(int i=0;i<LINE_SIZE;i++) {
-      if(art->art[n][i] == '@')
-        printf("%s%c%s", art->color1_ascii, art->ascii_chars[0], art->reset);
-      else if(art->art[n][i] == '#')
-        printf("%s%c%s", art->color2_ascii, art->ascii_chars[1], art->reset);
-      else
-        printf("%c",art->art[n][i]);
-    }
-
-    if(n > space_up-1 && n < NUMBER_OF_LINES-space_down) {
-      attr_to_print = get_next_attribute(art, attr_to_print);
-      space_right = 1 + (la - strlen(ATTRIBUTE_FIELDS[attr_to_print]));      
-      printf("%s%s%s%*s%s%s%s\n",art->color1_text, ATTRIBUTE_FIELDS[attr_to_print], art->reset, space_right, "", art->color2_text, art->attributes[attr_to_print], art->reset);
-    }
-    else printf("\n");
-  }
-
-}
-
-uint32_t longest_attribute_length(struct ascii* art) {
-  uint32_t max = 0;
-  uint64_t len = 0;
-  
-  for(int i=0; i < MAX_ATTRIBUTE_COUNT; i++) {
-    if(art->attributes[i] != NULL) {
-      len = strlen(ATTRIBUTE_FIELDS[i]);
-      if(len > max) max = len;
-    }
-  }
-  
-  return max;
-}
-
-void print_ascii(struct ascii* art) {
-  uint32_t longest_attribute = longest_attribute_length(art);
-  if(art->vendor == VENDOR_INTEL)
-    print_ascii_intel(art, longest_attribute);
-  else
-    print_ascii_amd(art, longest_attribute);
-}
-
-bool print_cpufetch(struct cpuInfo* cpu, struct cache* cach, struct frequency* freq, struct topology* topo, STYLE s, struct colors* cs) {
-  struct ascii* art = set_ascii(get_cpu_vendor(cpu), s, cs);
-  if(art == NULL)
-    return false;
-  
-  char* cpu_name = get_str_cpu_name(cpu);
-  char* sockets = get_str_sockets(topo);
-  char* max_frequency = get_str_freq(freq);
-  char* n_cores = get_str_topology(cpu, topo, false);
-  char* n_cores_dual = get_str_topology(cpu, topo, true);
-  char* avx = get_str_avx(cpu);
-  char* sse = get_str_sse(cpu);
-  char* fma = get_str_fma(cpu);
-  char* aes = get_str_aes(cpu);
-  char* sha = get_str_sha(cpu);
-  char* l1i = get_str_l1i(cach, topo);
-  char* l1d = get_str_l1d(cach, topo);
-  char* l2 = get_str_l2(cach, topo);
-  char* l3 = get_str_l3(cach, topo);
-  char* pp = get_str_peak_performance(cpu,topo,get_freq(freq));
-
-  setAttribute(art,ATTRIBUTE_NAME,cpu_name);
-  setAttribute(art,ATTRIBUTE_FREQUENCY,max_frequency);
-  setAttribute(art,ATTRIBUTE_NCORES,n_cores);
-  setAttribute(art,ATTRIBUTE_AVX,avx);
-  setAttribute(art,ATTRIBUTE_SSE,sse);
-  setAttribute(art,ATTRIBUTE_FMA,fma);
-  setAttribute(art,ATTRIBUTE_AES,aes);
-  setAttribute(art,ATTRIBUTE_SHA,sha);
-  setAttribute(art,ATTRIBUTE_L1i,l1i);
-  setAttribute(art,ATTRIBUTE_L1d,l1d);
-  setAttribute(art,ATTRIBUTE_L2,l2);  
-  setAttribute(art,ATTRIBUTE_PEAK,pp);
-  
-  uint32_t socket_num = get_nsockets(topo);
-  if (socket_num > 1) {    
-    setAttribute(art, ATTRIBUTE_SOCKETS, sockets);
-    setAttribute(art, ATTRIBUTE_NCORES_DUAL, n_cores_dual);
-  }
-  if(l3 != NULL) {
-    setAttribute(art,ATTRIBUTE_L3,l3);    
-  }
-  if(art->n_attributes_set > NUMBER_OF_LINES) {
-    printBug("The number of attributes set is bigger than the max that can be displayed");
-    return false;    
-  }
-
-  print_ascii(art);
-
-  free(cpu_name);
-  free(max_frequency);
-  free(sockets);
-  free(n_cores);
-  free(n_cores_dual);
-  free(avx);
-  free(sse);
-  free(fma);
-  free(aes);
-  free(sha);
-  free(l1i);
-  free(l1d);
-  free(l2);
-  free(l3);
-  free(pp);
-
-  free(cpu);
-  free(art);
-  if(cs != NULL) free_colors_struct(cs);
-  free_cache_struct(cach);
-  free_topo_struct(topo);
-  free_freq_struct(freq);   
-  
-  return true;
-}

src/printer.h

@@ -1,19 +0,0 @@
-#ifndef __PRINTER__
-#define __PRINTER__
-
-typedef int STYLE;
-
-#include "args.h"
-#include "cpuid.h"
-
-#define STYLES_COUNT 3
-
-#define STYLE_INVALID -2
-#define STYLE_EMPTY   -1
-#define STYLE_FANCY    0
-#define STYLE_RETRO    1
-#define STYLE_LEGACY   2
-
-bool print_cpufetch(struct cpuInfo* cpu, struct cache* cach, struct frequency* freq, struct topology* topo, STYLE s, struct colors* cs);
-
-#endif

src/riscv/riscv.c

@@ -0,0 +1,278 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#include "../common/global.h"
+#include "../common/udev.h"
+#include "udev.h"
+#include "uarch.h"
+#include "soc.h"
+
+#define SET_ISA_EXT_MAP(name, bit)          \
+  if(strncmp(multi_letter_extension, name,  \
+        multi_letter_extension_len) == 0) { \
+    ext->mask[bit] = true;                  \
+    maskset = true;                         \
+  }                                         \
+
+struct frequency* get_frequency_info(uint32_t core) {
+  struct frequency* freq = emalloc(sizeof(struct frequency));
+
+  freq->measured = false;
+  freq->base = UNKNOWN_DATA;
+  freq->max = get_max_freq_from_file(core);
+
+  return freq;
+}
+
+int64_t get_peak_performance(struct cpuInfo* cpu) {
+  //First check we have consistent data
+  if(get_freq(cpu->freq) == UNKNOWN_DATA) {
+    return -1;
+  }
+
+  int64_t flops = cpu->topo->total_cores * (get_freq(cpu->freq) * 1000000);
+  return flops;
+}
+
+// Returns the length of the multi-letter
+// extension, or -1 if an error occurs
+int parse_multi_letter_extension(struct extensions* ext, char* e) {
+  if(*e != '_') return -1;
+  char* multi_letter_extension_end = strstr(e+1, "_");
+  if(multi_letter_extension_end == NULL) {
+    // This is the last extension, find the end
+    // of the string
+    multi_letter_extension_end = e + strlen(e);
+  }
+
+  int multi_letter_extension_len = multi_letter_extension_end-(e+1);
+  bool maskset = false;
+  char* multi_letter_extension = emalloc(multi_letter_extension_len);
+  strncpy(multi_letter_extension, e+1, multi_letter_extension_len);
+  // This should be up-to-date with
+  // https://elixir.bootlin.com/linux/latest/source/arch/riscv/kernel/cpufeature.c
+  // which should represent the list of extensions available in real chips
+  SET_ISA_EXT_MAP("sscofpmf",    RISCV_ISA_EXT_SSCOFPMF)
+  SET_ISA_EXT_MAP("sstc",        RISCV_ISA_EXT_SSTC)
+  SET_ISA_EXT_MAP("svinval",     RISCV_ISA_EXT_SVINVAL)
+  SET_ISA_EXT_MAP("svpbmt",      RISCV_ISA_EXT_SVPBMT)
+  SET_ISA_EXT_MAP("zbb",         RISCV_ISA_EXT_ZBB)
+  SET_ISA_EXT_MAP("zicbom",      RISCV_ISA_EXT_ZICBOM)
+  SET_ISA_EXT_MAP("zihintpause", RISCV_ISA_EXT_ZIHINTPAUSE)
+  SET_ISA_EXT_MAP("svnapot",     RISCV_ISA_EXT_SVNAPOT)
+  SET_ISA_EXT_MAP("zicboz",      RISCV_ISA_EXT_ZICBOZ)
+  SET_ISA_EXT_MAP("smaia",       RISCV_ISA_EXT_SMAIA)
+  SET_ISA_EXT_MAP("ssaia",       RISCV_ISA_EXT_SSAIA)
+  SET_ISA_EXT_MAP("zba",         RISCV_ISA_EXT_ZBA)
+  SET_ISA_EXT_MAP("zbs",         RISCV_ISA_EXT_ZBS)
+  SET_ISA_EXT_MAP("zicntr",      RISCV_ISA_EXT_ZICNTR)
+  SET_ISA_EXT_MAP("zicsr",       RISCV_ISA_EXT_ZICSR)
+  SET_ISA_EXT_MAP("zifencei",    RISCV_ISA_EXT_ZIFENCEI)
+  SET_ISA_EXT_MAP("zihpm",       RISCV_ISA_EXT_ZIHPM)
+  SET_ISA_EXT_MAP("smstateen",   RISCV_ISA_EXT_SMSTATEEN)
+  SET_ISA_EXT_MAP("zicond",      RISCV_ISA_EXT_ZICOND)
+  SET_ISA_EXT_MAP("zbc",         RISCV_ISA_EXT_ZBC)
+  SET_ISA_EXT_MAP("zbkb",        RISCV_ISA_EXT_ZBKB)
+  SET_ISA_EXT_MAP("zbkc",        RISCV_ISA_EXT_ZBKC)
+  SET_ISA_EXT_MAP("zbkx",        RISCV_ISA_EXT_ZBKX)
+  SET_ISA_EXT_MAP("zknd",        RISCV_ISA_EXT_ZKND)
+  SET_ISA_EXT_MAP("zkne",        RISCV_ISA_EXT_ZKNE)
+  SET_ISA_EXT_MAP("zknh",        RISCV_ISA_EXT_ZKNH)
+  SET_ISA_EXT_MAP("zkr",         RISCV_ISA_EXT_ZKR)
+  SET_ISA_EXT_MAP("zksed",       RISCV_ISA_EXT_ZKSED)
+  SET_ISA_EXT_MAP("zksh",        RISCV_ISA_EXT_ZKSH)
+  SET_ISA_EXT_MAP("zkt",         RISCV_ISA_EXT_ZKT)
+  SET_ISA_EXT_MAP("zvbb",        RISCV_ISA_EXT_ZVBB)
+  SET_ISA_EXT_MAP("zvbc",        RISCV_ISA_EXT_ZVBC)
+  SET_ISA_EXT_MAP("zvkb",        RISCV_ISA_EXT_ZVKB)
+  SET_ISA_EXT_MAP("zvkg",        RISCV_ISA_EXT_ZVKG)
+  SET_ISA_EXT_MAP("zvkned",      RISCV_ISA_EXT_ZVKNED)
+  SET_ISA_EXT_MAP("zvknha",      RISCV_ISA_EXT_ZVKNHA)
+  SET_ISA_EXT_MAP("zvknhb",      RISCV_ISA_EXT_ZVKNHB)
+  SET_ISA_EXT_MAP("zvksed",      RISCV_ISA_EXT_ZVKSED)
+  SET_ISA_EXT_MAP("zvksh",       RISCV_ISA_EXT_ZVKSH)
+  SET_ISA_EXT_MAP("zvkt",        RISCV_ISA_EXT_ZVKT)
+  SET_ISA_EXT_MAP("zfh",         RISCV_ISA_EXT_ZFH)
+  SET_ISA_EXT_MAP("zfhmin",      RISCV_ISA_EXT_ZFHMIN)
+  SET_ISA_EXT_MAP("zihintntl",   RISCV_ISA_EXT_ZIHINTNTL)
+  SET_ISA_EXT_MAP("zvfh",        RISCV_ISA_EXT_ZVFH)
+  SET_ISA_EXT_MAP("zvfhmin",     RISCV_ISA_EXT_ZVFHMIN)
+  SET_ISA_EXT_MAP("zfa",         RISCV_ISA_EXT_ZFA)
+  SET_ISA_EXT_MAP("ztso",        RISCV_ISA_EXT_ZTSO)
+  SET_ISA_EXT_MAP("zacas",       RISCV_ISA_EXT_ZACAS)
+  SET_ISA_EXT_MAP("zve32x",      RISCV_ISA_EXT_ZVE32X)
+  SET_ISA_EXT_MAP("zve32f",      RISCV_ISA_EXT_ZVE32F)
+  SET_ISA_EXT_MAP("zve64x",      RISCV_ISA_EXT_ZVE64X)
+  SET_ISA_EXT_MAP("zve64f",      RISCV_ISA_EXT_ZVE64F)
+  SET_ISA_EXT_MAP("zve64d",      RISCV_ISA_EXT_ZVE64D)
+  SET_ISA_EXT_MAP("zimop",       RISCV_ISA_EXT_ZIMOP)
+  SET_ISA_EXT_MAP("zca",         RISCV_ISA_EXT_ZCA)
+  SET_ISA_EXT_MAP("zcb",         RISCV_ISA_EXT_ZCB)
+  SET_ISA_EXT_MAP("zcd",         RISCV_ISA_EXT_ZCD)
+  SET_ISA_EXT_MAP("zcf",         RISCV_ISA_EXT_ZCF)
+  SET_ISA_EXT_MAP("zcmop",       RISCV_ISA_EXT_ZCMOP)
+  SET_ISA_EXT_MAP("zawrs",       RISCV_ISA_EXT_ZAWRS)
+  SET_ISA_EXT_MAP("svvptc",      RISCV_ISA_EXT_SVVPTC)
+  SET_ISA_EXT_MAP("smmpm",       RISCV_ISA_EXT_SMMPM)
+  SET_ISA_EXT_MAP("smnpm",       RISCV_ISA_EXT_SMNPM)
+  SET_ISA_EXT_MAP("ssnpm",       RISCV_ISA_EXT_SSNPM)
+  SET_ISA_EXT_MAP("zabha",       RISCV_ISA_EXT_ZABHA)
+  SET_ISA_EXT_MAP("ziccrse",     RISCV_ISA_EXT_ZICCRSE)
+  SET_ISA_EXT_MAP("svade",       RISCV_ISA_EXT_SVADE)
+  SET_ISA_EXT_MAP("svadu",       RISCV_ISA_EXT_SVADU)
+  SET_ISA_EXT_MAP("zfbfmin",     RISCV_ISA_EXT_ZFBFMIN)
+  SET_ISA_EXT_MAP("zvfbfmin",    RISCV_ISA_EXT_ZVFBFMIN)
+  SET_ISA_EXT_MAP("zvfbfwma",    RISCV_ISA_EXT_ZVFBFWMA)
+  SET_ISA_EXT_MAP("zaamo",       RISCV_ISA_EXT_ZAAMO)
+  SET_ISA_EXT_MAP("zalrsc",      RISCV_ISA_EXT_ZALRSC)
+  SET_ISA_EXT_MAP("zicbop",      RISCV_ISA_EXT_ZICBOP)
+  SET_ISA_EXT_MAP("ime",         RISCV_ISA_EXT_IME)
+
+  if(!maskset) {
+    printBug("parse_multi_letter_extension: Unknown multi-letter extension: %s", multi_letter_extension);
+    return -1;
+  }
+
+  return multi_letter_extension_len;
+}
+
+bool valid_extension(char ext) {
+  bool found = false;
+  uint64_t idx = 0;
+
+  while(idx < sizeof(extension_list)/sizeof(extension_list[0]) && !found) {
+    found = (extension_list[idx].id == (ext - 'a'));
+    if(!found) idx++;
+  }
+
+  return found;
+}
+
+struct extensions* get_extensions_from_str(char* str) {
+  struct extensions* ext = emalloc(sizeof(struct extensions));
+  ext->mask = ecalloc(RISCV_ISA_EXT_ID_MAX, sizeof(bool));
+  ext->str = NULL;
+
+  if(str == NULL) {
+    return ext;
+  }
+
+  int len = strlen(str)+1;
+  ext->str = emalloc(len * sizeof(char));
+  strncpy(ext->str, str, sizeof(char) * len);
+
+  // Code inspired in Linux kernel (riscv_fill_hwcap):
+  // https://elixir.bootlin.com/linux/v6.2.10/source/arch/riscv/kernel/cpufeature.c
+  // Now it seems to be here in riscv_parse_isa_string:
+  // https://elixir.bootlin.com/linux/v6.16/source/arch/riscv/kernel/cpufeature.c
+  char* isa = str;
+  if (!strncmp(isa, "rv32", 4))
+    isa += 4;
+  else if (!strncmp(isa, "rv64", 4))
+    isa += 4;
+  else {
+    printBug("get_extensions_from_str: ISA string must start with rv64 or rv32");
+    return ext;
+  }
+
+  for(char* e = isa; *e != '\0'; e++) {
+    if(*e == '_') {
+      // Multi-letter extension
+      int multi_letter_extension_len = parse_multi_letter_extension(ext, e);
+      if(multi_letter_extension_len == -1) {
+        return ext;
+      }
+      e += multi_letter_extension_len;
+    }
+    else {
+      // Single-letter extensions 's' and 'u' are invalid
+      // according to Linux kernel (arch/riscv/kernel/cpufeature.c:
+      // riscv_fill_hwcap). Optionally, we could opt for using
+      // hwcap instead of cpuinfo to avoid this
+      if (*e == 's' || *e == 'u') {
+        continue;
+      }
+      // Make sure that the extension is valid before
+      // adding it to the mask
+      if(valid_extension(*e)) {
+        int n = *e - 'a';
+        ext->mask[n] = true;
+      }
+      else {
+        printBug("get_extensions_from_str: Invalid extension: '%c'", *e);
+      }
+    }
+  }
+
+  return ext;
+}
+
+uint32_t get_num_extensions(bool* mask) {
+  uint32_t num = 0;
+  for (int i=0; i < RISCV_ISA_EXT_ID_MAX; i++) {
+    if (mask[i]) num++;
+  }
+  return num;
+}
+
+bool is_mask_empty(bool* mask) {
+  return get_num_extensions(mask) == 0;
+}
+
+struct cpuInfo* get_cpu_info(void) {
+  struct cpuInfo* cpu = malloc(sizeof(struct cpuInfo));
+  //init_cpu_info(cpu);
+  struct topology* topo = emalloc(sizeof(struct topology));
+  topo->total_cores = get_ncores_from_cpuinfo();
+  topo->cach = NULL;
+  cpu->topo = topo;
+
+  char* ext_str = get_extensions_from_cpuinfo();
+  cpu->hv = emalloc(sizeof(struct hypervisor));
+  cpu->hv->present = false;
+  cpu->ext = get_extensions_from_str(ext_str);
+  if(cpu->ext->str != NULL && is_mask_empty(cpu->ext->mask)) return NULL;
+  cpu->arch = get_uarch(cpu);
+  cpu->soc = get_soc(cpu);
+  cpu->freq = get_frequency_info(0);
+  cpu->peak_performance = get_peak_performance(cpu);
+
+  return cpu;
+}
+
+//TODO: Might be worth refactoring with other archs
+char* get_str_topology(struct cpuInfo* cpu, struct topology* topo) {
+  uint32_t size = 3+7+1;
+  char* string = emalloc(sizeof(char)*size);
+  snprintf(string, size, "%d cores", topo->total_cores);
+
+  return string;
+}
+
+char* get_str_extensions(struct cpuInfo* cpu) {
+  if(cpu->ext != NULL) {
+    return cpu->ext->str;
+  }
+  return NULL;
+}
+
+void print_debug(struct cpuInfo* cpu) {
+  printf("- soc: ");
+  if(cpu->soc->raw_name == NULL) {
+    printf("NULL\n");
+  }
+  else {
+    printf("'%s'\n", cpu->soc->raw_name);
+  }
+
+  printf("- uarch: ");
+  char* arch_cpuinfo_str = get_arch_cpuinfo_str(cpu);
+  if(arch_cpuinfo_str == NULL) {
+    printf("NULL\n");
+  }
+  else {
+    printf("'%s'\n", arch_cpuinfo_str);
+  }
+}

src/riscv/riscv.h

@@ -0,0 +1,205 @@
+#ifndef __RISCV__
+#define __RISCV__
+
+#include "../common/cpu.h"
+
+struct extension {
+  int id;
+  char* str;
+};
+
+#define RISCV_ISA_EXT_NAME_LEN_MAX 32
+#define RISCV_ISA_EXT_BASE         26
+
+// https://elixir.bootlin.com/linux/latest/source/arch/riscv/include/asm/hwcap.h
+// This enum represent the logical ID for multi-letter RISC-V ISA extensions.
+// The logical ID should start from RISCV_ISA_EXT_BASE
+enum riscv_isa_ext_id {
+  RISCV_ISA_EXT_SSCOFPMF = RISCV_ISA_EXT_BASE,
+  RISCV_ISA_EXT_SSTC,
+  RISCV_ISA_EXT_SVINVAL,
+  RISCV_ISA_EXT_SVPBMT,
+  RISCV_ISA_EXT_ZBB,
+  RISCV_ISA_EXT_ZICBOM,
+  RISCV_ISA_EXT_ZIHINTPAUSE,
+  RISCV_ISA_EXT_SVNAPOT,
+  RISCV_ISA_EXT_ZICBOZ,
+  RISCV_ISA_EXT_SMAIA,
+  RISCV_ISA_EXT_SSAIA,
+  RISCV_ISA_EXT_ZBA,
+  RISCV_ISA_EXT_ZBS,
+  RISCV_ISA_EXT_ZICNTR,
+  RISCV_ISA_EXT_ZICSR,
+  RISCV_ISA_EXT_ZIFENCEI,
+  RISCV_ISA_EXT_ZIHPM,
+  RISCV_ISA_EXT_SMSTATEEN,
+  RISCV_ISA_EXT_ZICOND,
+  RISCV_ISA_EXT_ZBC,
+  RISCV_ISA_EXT_ZBKB,
+  RISCV_ISA_EXT_ZBKC,
+  RISCV_ISA_EXT_ZBKX,
+  RISCV_ISA_EXT_ZKND,
+  RISCV_ISA_EXT_ZKNE,
+  RISCV_ISA_EXT_ZKNH,
+  RISCV_ISA_EXT_ZKR,
+  RISCV_ISA_EXT_ZKSED,
+  RISCV_ISA_EXT_ZKSH,
+  RISCV_ISA_EXT_ZKT,
+  RISCV_ISA_EXT_ZVBB,
+  RISCV_ISA_EXT_ZVBC,
+  RISCV_ISA_EXT_ZVKB,
+  RISCV_ISA_EXT_ZVKG,
+  RISCV_ISA_EXT_ZVKNED,
+  RISCV_ISA_EXT_ZVKNHA,
+  RISCV_ISA_EXT_ZVKNHB,
+  RISCV_ISA_EXT_ZVKSED,
+  RISCV_ISA_EXT_ZVKSH,
+  RISCV_ISA_EXT_ZVKT,
+  RISCV_ISA_EXT_ZFH,
+  RISCV_ISA_EXT_ZFHMIN,
+  RISCV_ISA_EXT_ZIHINTNTL,
+  RISCV_ISA_EXT_ZVFH,
+  RISCV_ISA_EXT_ZVFHMIN,
+  RISCV_ISA_EXT_ZFA,
+  RISCV_ISA_EXT_ZTSO,
+  RISCV_ISA_EXT_ZACAS,
+  RISCV_ISA_EXT_ZVE32X,
+  RISCV_ISA_EXT_ZVE32F,
+  RISCV_ISA_EXT_ZVE64X,
+  RISCV_ISA_EXT_ZVE64F,
+  RISCV_ISA_EXT_ZVE64D,
+  RISCV_ISA_EXT_ZIMOP,
+  RISCV_ISA_EXT_ZCA,
+  RISCV_ISA_EXT_ZCB,
+  RISCV_ISA_EXT_ZCD,
+  RISCV_ISA_EXT_ZCF,
+  RISCV_ISA_EXT_ZCMOP,
+  RISCV_ISA_EXT_ZAWRS,
+  RISCV_ISA_EXT_SVVPTC,
+  RISCV_ISA_EXT_SMMPM,
+  RISCV_ISA_EXT_SMNPM,
+  RISCV_ISA_EXT_SSNPM,
+  RISCV_ISA_EXT_ZABHA,
+  RISCV_ISA_EXT_ZICCRSE,
+  RISCV_ISA_EXT_SVADE,
+  RISCV_ISA_EXT_SVADU,
+  RISCV_ISA_EXT_ZFBFMIN,
+  RISCV_ISA_EXT_ZVFBFMIN,
+  RISCV_ISA_EXT_ZVFBFWMA,
+  RISCV_ISA_EXT_ZAAMO,
+  RISCV_ISA_EXT_ZALRSC,
+  RISCV_ISA_EXT_ZICBOP,
+  RISCV_ISA_EXT_IME,      // This is not in the kernel! but it was seen on a Muse Pi Pro board
+  RISCV_ISA_EXT_ID_MAX
+};
+
+// https://five-embeddev.com/riscv-isa-manual/latest/preface.html#preface
+// https://en.wikichip.org/wiki/risc-v/standard_extensions
+// (Zicbop) https://github.com/riscv/riscv-CMOs/blob/master/cmobase/Zicbop.adoc
+// https://raw.githubusercontent.com/riscv/riscv-CMOs/master/specifications/cmobase-v1.0.1.pdf
+// https://www.kernel.org/doc/Documentation/devicetree/bindings/riscv/extensions.yaml
+// https://gcc.gnu.org/onlinedocs/gcc/RISC-V-Options.html
+// (Ime) https://github.com/riscv/integrated-matrix-extension (not confirmed, just a guess...)
+// Included all except for G
+static const struct extension extension_list[] = {
+  { 'i' - 'a', "(I) Integer Instruction Set" },
+  { 'm' - 'a', "(M) Integer Multiplication and Division" },
+  { 'a' - 'a', "(A) Atomic Instructions" },
+  { 'f' - 'a', "(F) Single-Precision Floating-Point" },
+  { 'd' - 'a', "(D) Double-Precision Floating-Point" },
+  { 'q' - 'a', "(Q) Quad-Precision Floating-Point" },
+  { 'l' - 'a', "(L) Decimal Floating-Point" },
+  { 'c' - 'a', "(C) Compressed Instructions" },
+  { 'b' - 'a', "(B) Double-Precision Floating-Point" },
+  { 'j' - 'a', "(J) Dynamically Translated Languages" },
+  { 't' - 'a', "(T) Transactional Memory" },
+  { 'p' - 'a', "(P) Packed-SIMD Instructions" },
+  { 'v' - 'a', "(V) Vector Operations" },
+  { 'n' - 'a', "(N) User-Level Interrupts" },
+  { 'h' - 'a', "(H) Hypervisor" },
+  // multi-letter extensions
+  { RISCV_ISA_EXT_SSCOFPMF,    "(Sscofpmf) Count OverFlow and Privilege Mode Filtering" },
+  { RISCV_ISA_EXT_SSTC,        "(Sstc) S and VS level Time Compare" },
+  { RISCV_ISA_EXT_SVINVAL,     "(Svinval) Fast TLB Invalidation" },
+  { RISCV_ISA_EXT_SVPBMT,      "(Svpbmt) Page-based Memory Types" },
+  { RISCV_ISA_EXT_ZBB,         "(Zbb) Basic bit-manipulation" },
+  { RISCV_ISA_EXT_ZICBOM,      "(Zicbom) Cache Block Management Operations" },
+  { RISCV_ISA_EXT_ZIHINTPAUSE, "(Zihintpause) Pause Hint" },
+  { RISCV_ISA_EXT_SVNAPOT,     "(Svnapot) Naturally Aligned Power of Two Pages" },
+  { RISCV_ISA_EXT_ZICBOZ,      "(Zicboz) Cache Block Zero Operations" },
+  { RISCV_ISA_EXT_ZICBOP,      "(Zicbop) Cache Block Prefetch Operations" },
+  { RISCV_ISA_EXT_SMAIA,       "(Smaia) Advanced Interrupt Architecture" },
+  { RISCV_ISA_EXT_SSAIA,       "(Ssaia) Advanced Interrupt Architecture" },
+  { RISCV_ISA_EXT_ZBA,         "(Zba) Address Generation" },
+  { RISCV_ISA_EXT_ZBS,         "(Zbs) Single-bit Instructions" },
+  { RISCV_ISA_EXT_ZICNTR,      "(Zicntr) Base Counters and Timers" },
+  { RISCV_ISA_EXT_ZICSR,       "(Zicsr) Control and Status Register" },
+  { RISCV_ISA_EXT_ZIFENCEI,    "(Zifencei) Instruction-Fetch Fence" },
+  { RISCV_ISA_EXT_ZIHPM,       "(Zihpm) Hardware Performance Counters" },
+  { RISCV_ISA_EXT_SMSTATEEN,   "(Smstateen) Supervisor/Hypervisor State Enable" },
+  { RISCV_ISA_EXT_ZICOND,      "(Zicond) Integer Conditional Operations" },
+  { RISCV_ISA_EXT_ZBC,         "(Zbc) Carry-Less Multiplication" },
+  { RISCV_ISA_EXT_ZBKB,        "(Zbkb) Bit-Manipulation for Cryptography (Byte ops)" },
+  { RISCV_ISA_EXT_ZBKC,        "(Zbkc) Bit-Manipulation for Cryptography (Carry-less ops)" },
+  { RISCV_ISA_EXT_ZBKX,        "(Zbkx) Bit-Manipulation for Cryptography (Crossbar ops)" },
+  { RISCV_ISA_EXT_ZKND,        "(Zknd) NIST AES Decryption Instructions" },
+  { RISCV_ISA_EXT_ZKNE,        "(Zkne) NIST AES Encryption Instructions" },
+  { RISCV_ISA_EXT_ZKNH,        "(Zknh) NIST Hash (SHA-2/SHA-3) Instructions" },
+  { RISCV_ISA_EXT_ZKR,         "(Zkr) Entropy Source Reading (Random)" },
+  { RISCV_ISA_EXT_ZKSED,       "(Zksed) SM4 Block Cipher Decryption" },
+  { RISCV_ISA_EXT_ZKSH,        "(Zksh) SM3 Hash Instructions" },
+  { RISCV_ISA_EXT_ZKT,         "(Zkt) Data-Independent Execution Latency" },
+  { RISCV_ISA_EXT_ZVBB,        "(Zvbb) Vector Basic Bit-Manipulation" },
+  { RISCV_ISA_EXT_ZVBC,        "(Zvbc) Vector Carry-Less Multiplication" },
+  { RISCV_ISA_EXT_ZVKB,        "(Zvkb) Vector Cryptography (Byte ops)" },
+  { RISCV_ISA_EXT_ZVKG,        "(Zvkg) Vector GCM/GMAC Instructions" },
+  { RISCV_ISA_EXT_ZVKNED,      "(Zvkned) Vector AES Decryption" },
+  { RISCV_ISA_EXT_ZVKNHA,      "(Zvknha) Vector SHA-2 Hash (A variant)" },
+  { RISCV_ISA_EXT_ZVKNHB,      "(Zvknhb) Vector SHA-2 Hash (B variant)" },
+  { RISCV_ISA_EXT_ZVKSED,      "(Zvksed) Vector SM4 Block Cipher Decryption" },
+  { RISCV_ISA_EXT_ZVKSH,       "(Zvksh) Vector SM3 Hash Instructions" },
+  { RISCV_ISA_EXT_ZVKT,        "(Zvkt) Vector Data-Independent Execution Latency" },
+  { RISCV_ISA_EXT_ZFH,         "(Zfh) Half-Precision Floating Point" },
+  { RISCV_ISA_EXT_ZFHMIN,      "(Zfhmin) Minimal Half-Precision Floating Point" },
+  { RISCV_ISA_EXT_ZIHINTNTL,   "(Zihintntl) Non-Temporal Load/Store Hints" },
+  { RISCV_ISA_EXT_ZVFH,        "(Zvfh) Vector Half-Precision Floating Point" },
+  { RISCV_ISA_EXT_ZVFHMIN,     "(Zvfhmin) Minimal Vector Half-Precision Floating Point" },
+  { RISCV_ISA_EXT_ZFA,         "(Zfa) Additional Floating-Point Instructions" },
+  { RISCV_ISA_EXT_ZTSO,        "(Ztso) Total Store Ordering Memory Model" },
+  { RISCV_ISA_EXT_ZACAS,       "(Zacas) Atomic Compare-and-Swap" },
+  { RISCV_ISA_EXT_ZVE32X,      "(Zve32x) Embedded Vector Integer (32-bit elements)" },
+  { RISCV_ISA_EXT_ZVE32F,      "(Zve32f) Embedded Vector Floating Point (f32)" },
+  { RISCV_ISA_EXT_ZVE64X,      "(Zve64x) Embedded Vector Integer (64-bit elements)" },
+  { RISCV_ISA_EXT_ZVE64F,      "(Zve64f) Embedded Vector Floating Point (f64)" },
+  { RISCV_ISA_EXT_ZVE64D,      "(Zve64d) Embedded Vector Double-Precision FP (f64)" },
+  { RISCV_ISA_EXT_ZIMOP,       "(Zimop) Integer Multiply-Only Instructions" },
+  { RISCV_ISA_EXT_ZCA,         "(Zca) Compressed Integer Instructions" },
+  { RISCV_ISA_EXT_ZCB,         "(Zcb) Compressed Bit-Manipulation Instructions" },
+  { RISCV_ISA_EXT_ZCD,         "(Zcd) Compressed Double-Precision FP Instructions" },
+  { RISCV_ISA_EXT_ZCF,         "(Zcf) Compressed Single-Precision FP Instructions" },
+  { RISCV_ISA_EXT_ZCMOP,       "(Zcmop) Compressed Multiply-Only Instructions" },
+  { RISCV_ISA_EXT_ZAWRS,       "(Zawrs) Wait-on-Reservation-Set Instruction" },
+  { RISCV_ISA_EXT_SVVPTC,      "(Svvptc) Supervisor Virtual Page Table Cache Control" },
+  { RISCV_ISA_EXT_SMMPM,       "(Smmpm) Supervisor Memory Protection Modification" },
+  { RISCV_ISA_EXT_SMNPM,       "(Smnpm) Supervisor Non-Privileged Memory Access Control" },
+  { RISCV_ISA_EXT_SSNPM,       "(Ssnpm) Supervisor Secure Non-Privileged Memory" },
+  { RISCV_ISA_EXT_ZABHA,       "(Zabha) Atomic Byte/Halfword Operations" },
+  { RISCV_ISA_EXT_ZICCRSE,     "(Ziccrse) Cache Control Range Start/End Operations" },
+  { RISCV_ISA_EXT_SVADE,       "(Svade) Supervisor Virtual Address Deferred Exception" },
+  { RISCV_ISA_EXT_SVADU,       "(Svadu) Supervisor Virtual Address Dirty Update" },
+  { RISCV_ISA_EXT_ZFBFMIN,     "(Zfbfmin) Minimal BFloat16 Floating Point" },
+  { RISCV_ISA_EXT_ZVFBFMIN,    "(Zvfbfmin) Vector Minimal BFloat16 Floating Point" },
+  { RISCV_ISA_EXT_ZVFBFWMA,    "(Zvfbfwma) Vector BFloat16 Widening Multiply-Accumulate" },
+  { RISCV_ISA_EXT_ZAAMO,       "(Zaamo) Atomic Memory Operation (AMO) Instructions" },
+  { RISCV_ISA_EXT_ZALRSC,      "(Zalrsc) Atomic Load-Reserved/Store-Conditional" },
+  { RISCV_ISA_EXT_ZICBOP,      "(Zicbop) Cache Block Prefetch/Zero Operations" },
+  { RISCV_ISA_EXT_IME,         "(Ime) Integrated Matrix Extension" },
+};
+
+struct cpuInfo* get_cpu_info(void);
+char* get_str_topology(struct cpuInfo* cpu, struct topology* topo);
+char* get_str_extensions(struct cpuInfo* cpu);
+uint32_t get_num_extensions(bool* mask);
+void print_debug(struct cpuInfo* cpu);
+
+#endif

src/riscv/soc.c

@@ -0,0 +1,102 @@
+#include "soc.h"
+#include "socs.h"
+#include "udev.h"
+#include "../common/global.h"
+
+#include <string.h>
+
+bool match_sifive(char* soc_name, struct system_on_chip* soc) {
+  char* tmp = soc_name;
+
+  // Dont know if it makes sense in RISC-V
+  /*if((tmp = strstr(soc_name, "???")) == NULL)
+    return false;*/
+
+  //soc->vendor = ???
+
+  SOC_START
+  SOC_EQ(tmp, "fu740", "Freedom U740",  SOC_SIFIVE_U740, soc, 40)
+  SOC_END
+}
+
+bool match_starfive(char* soc_name, struct system_on_chip* soc) {
+  SOC_START
+  SOC_EQ(soc_name, "jh7110#", "VisionFive 2",  SOC_STARFIVE_VF2, soc, 28) // https://blog.bitsofnetworks.org/benchmarking-risc-v-visionfive-2-vs-the-world.html
+  SOC_EQ(soc_name, "jh7110",  "VisionFive 2",  SOC_STARFIVE_VF2, soc, 28)
+  SOC_END
+}
+
+bool match_allwinner(char* soc_name, struct system_on_chip* soc) {
+  SOC_START
+  SOC_EQ(soc_name, "sun20i-d1", "D1-H", SOC_ALLWINNER_D1H, soc, 22)
+  SOC_END
+}
+
+bool match_sipeed(char* soc_name, struct system_on_chip* soc) {
+  SOC_START
+  SOC_EQ(soc_name, "light", "Lichee Pi 4A", SOC_SIPEED_LICHEEPI4A, soc, 12) // https://github.com/Dr-Noob/cpufetch/issues/200, https://sipeed.com/licheepi4a
+  SOC_END
+}
+
+bool match_spacemit(char* soc_name, struct system_on_chip* soc) {
+  SOC_START
+  SOC_EQ(soc_name, "k1-x", "K1-X", SOC_SPACEMIT_K1X, soc, 22) // https://github.com/Dr-Noob/cpufetch/issues/286 https://www.spacemit.com/en/spacemit-x60-core/
+  SOC_END
+}
+
+struct system_on_chip* parse_soc_from_string(struct system_on_chip* soc) {
+  char* raw_name = soc->raw_name;
+
+  if(match_starfive(raw_name, soc))
+    return soc;
+
+  if(match_allwinner(raw_name, soc))
+    return soc;
+
+  if(match_sifive(raw_name, soc))
+    return soc;
+
+  if(match_spacemit(raw_name, soc))
+    return soc;
+
+  match_sipeed(raw_name, soc);
+  return soc;
+}
+
+struct system_on_chip* guess_soc_from_devtree(struct system_on_chip* soc) {
+  char* tmp = get_hardware_from_devtree();
+
+  if(tmp != NULL) {
+    soc->raw_name = tmp;
+    return parse_soc_from_string(soc);
+  }
+
+  return soc;
+}
+
+struct system_on_chip* get_soc(struct cpuInfo* cpu) {
+  struct system_on_chip* soc = emalloc(sizeof(struct system_on_chip));
+  soc->raw_name = NULL;
+  soc->vendor = SOC_VENDOR_UNKNOWN;
+  soc->model = SOC_MODEL_UNKNOWN;
+  soc->process = UNKNOWN;
+
+  soc = guess_soc_from_devtree(soc);
+  if(soc->vendor == SOC_VENDOR_UNKNOWN) {
+    if(soc->raw_name != NULL) {
+      printWarn("SoC detection failed using device tree: Found '%s' string", soc->raw_name);
+    }
+    else {
+      printWarn("SoC detection failed using device tree");
+    }
+  }
+
+  if(soc->model == SOC_MODEL_UNKNOWN) {
+    // raw_name might not be NULL, but if we were unable to find
+    // the exact SoC, just print "Unkwnown"
+    soc->raw_name = emalloc(sizeof(char) * (strlen(STRING_UNKNOWN)+1));
+    snprintf(soc->raw_name, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
+  }
+
+  return soc;
+}

src/riscv/soc.h

@@ -0,0 +1,10 @@
+#ifndef __SOC_RISCV__
+#define __SOC_RISCV__
+
+#include "../common/soc.h"
+#include "../common/cpu.h"
+#include <stdint.h>
+
+struct system_on_chip* get_soc(struct cpuInfo* cpu);
+
+#endif

src/riscv/socs.h

@@ -0,0 +1,31 @@
+#ifndef __SOCS__
+#define __SOCS__
+
+#include "soc.h"
+
+// List of supported SOCs
+enum {
+  // SIFIVE
+  SOC_SIFIVE_U740,
+  // STARFIVE
+  SOC_STARFIVE_VF2,
+  // ALLWINNER
+  SOC_ALLWINNER_D1H,
+  // SIPEED
+  SOC_SIPEED_LICHEEPI4A,
+  // SPACEMIT
+  SOC_SPACEMIT_K1X,
+  // UNKNOWN
+  SOC_MODEL_UNKNOWN
+};
+
+inline static VENDOR get_soc_vendor_from_soc(SOC soc) {
+  if(soc >= SOC_SIFIVE_U740 && soc <= SOC_SIFIVE_U740) return SOC_VENDOR_SIFIVE;
+  if(soc >= SOC_STARFIVE_VF2 && soc <= SOC_STARFIVE_VF2) return SOC_VENDOR_STARFIVE;
+  if(soc >= SOC_ALLWINNER_D1H && soc <= SOC_ALLWINNER_D1H) return SOC_VENDOR_ALLWINNER;
+  if(soc >= SOC_SIPEED_LICHEEPI4A && soc <= SOC_SIPEED_LICHEEPI4A) return SOC_VENDOR_SIPEED;
+  if(soc >= SOC_SPACEMIT_K1X && soc <= SOC_SPACEMIT_K1X) return SOC_VENDOR_SPACEMIT;
+  return SOC_VENDOR_UNKNOWN;
+}
+
+#endif

src/riscv/uarch.c

@@ -0,0 +1,122 @@
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "uarch.h"
+#include "udev.h"
+#include "../common/global.h"
+
+typedef uint32_t MICROARCH;
+
+struct uarch {
+  MICROARCH uarch;
+  char* uarch_str;
+  char* cpuinfo_str;
+  struct riscv_cpuinfo* ci;
+};
+
+enum {
+  UARCH_UNKNOWN,
+  // SIFIVE
+  UARCH_U54,
+  UARCH_U74,
+  // THEAD
+  UARCH_C906,
+  UARCH_C910,
+  // SPACEMIT
+  UARCH_X60
+};
+
+#define UARCH_START if (false) {}
+#define CHECK_UARCH(arch, cpu, cpuinfo_str, uarch_str, str, uarch, vendor) \
+   else if (strcmp(cpuinfo_str, uarch_str) == 0) fill_uarch(arch, cpu, str, uarch, vendor);
+#define UARCH_END else { printWarn("Unknown microarchitecture detected: uarch='%s'", cpuinfo_str); fill_uarch(arch, cpu, "Unknown", UARCH_UNKNOWN, CPU_VENDOR_UNKNOWN); }
+
+#define ARCHID_START if (false) {}
+#define CHECK_ARCHID(arch, marchid_val, str, uarch, vendor) \
+  else if (arch->ci->marchid == (unsigned long) marchid_val) fill_uarch(arch, cpu, str, uarch, vendor);
+#define ARCHID_END else { printWarn("Unknown microarchitecture detected: marchid=0x%.8X", arch->ci->marchid); fill_uarch(arch, cpu, "Unknown", UARCH_UNKNOWN, CPU_VENDOR_UNKNOWN); }
+
+void fill_uarch(struct uarch* arch, struct cpuInfo* cpu, char* str, MICROARCH u, VENDOR vendor) {
+  arch->uarch = u;
+  cpu->cpu_vendor = vendor;
+  arch->uarch_str = emalloc(sizeof(char) * (strlen(str)+1));
+  strcpy(arch->uarch_str, str);
+}
+
+// https://elixir.bootlin.com/linux/latest/source/Documentation/devicetree/bindings/riscv/cpus.yaml
+// SiFive: https://www.sifive.com/risc-v-core-ip
+// T-Head: https://www.t-head.cn/product/c906
+struct uarch* get_uarch_from_cpuinfo_str(char* cpuinfo_str, struct cpuInfo* cpu, struct uarch* arch) {
+  arch->cpuinfo_str = cpuinfo_str;
+
+  // U74/U74-MC:
+  // SiFive says that U74-MC is "Multicore: four U74 cores and one S76 core" while
+  // U74 is "High performance Linux-capable processor". It's like U74-MC is somehow a small SoC containing
+  // the U74 and the S76? Then U74-MC is not a microarchitecture per se...
+  UARCH_START
+  CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,bullet0", "U74",         UARCH_U74, CPU_VENDOR_SIFIVE) // bullet0 is present in U740, which has U74
+  // CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,e5",      "XXXXXX",      UARCH_U74, CPU_VENDOR_SIFIVE)
+  // CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,e7",      "XXXXXX",      UARCH_U74, CPU_VENDOR_SIFIVE)
+  // CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,e71",     "XXXXXX",      UARCH_U74, CPU_VENDOR_SIFIVE)
+  // CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,rocket0", "XXXXXX",      UARCH_U74, CPU_VENDOR_SIFIVE)
+  // CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,u5",      "XXXXXX",      UARCH_U74, CPU_VENDOR_SIFIVE)
+  CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,u54",     "U54",         UARCH_U54,  CPU_VENDOR_SIFIVE)
+  // CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,u7",      "XXXXXX",      UARCH_U74, CPU_VENDOR_SIFIVE)
+  CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,u74",     "U74",         UARCH_U74,  CPU_VENDOR_SIFIVE)
+  CHECK_UARCH(arch, cpu, cpuinfo_str, "sifive,u74-mc",  "U74",         UARCH_U74,  CPU_VENDOR_SIFIVE)
+  CHECK_UARCH(arch, cpu, cpuinfo_str, "thead,c906",     "T-Head C906", UARCH_C906, CPU_VENDOR_THEAD)
+  CHECK_UARCH(arch, cpu, cpuinfo_str, "thead,c910",     "T-Head C910", UARCH_C910, CPU_VENDOR_THEAD)
+  UARCH_END
+
+  return arch;
+}
+
+// Use marchid to get the microarchitecture
+struct uarch* get_uarch_from_riscv_cpuinfo(struct cpuInfo* cpu, struct uarch* arch) {
+
+  ARCHID_START
+  CHECK_ARCHID(arch, 0x8000000058000001, "X60", UARCH_X60, CPU_VENDOR_SPACEMIT) // https://github.com/Dr-Noob/cpufetch/issues/286
+  ARCHID_END
+
+  return arch;
+}
+
+struct uarch* get_uarch(struct cpuInfo* cpu) {
+  char* cpuinfo_str = get_uarch_from_cpuinfo();
+  struct uarch* arch = emalloc(sizeof(struct uarch));
+  arch->uarch = UARCH_UNKNOWN;
+  arch->ci = NULL;
+
+  if (cpuinfo_str == NULL) {
+    printWarn("get_uarch_from_cpuinfo: Unable to detect microarchitecture using uarch: cpuinfo_str is NULL");
+    arch->ci = get_riscv_cpuinfo();
+
+    if (arch->ci == NULL || arch->ci->marchid == 0)
+      printWarn("get_riscv_cpuinfo: Unable to get marchid from udev");
+    else
+      arch = get_uarch_from_riscv_cpuinfo(cpu, arch);
+  }
+  else {
+    arch = get_uarch_from_cpuinfo_str(cpuinfo_str, cpu, arch);
+  }
+
+  if (arch->uarch == UARCH_UNKNOWN)
+    fill_uarch(arch, cpu, "Unknown", UARCH_UNKNOWN, CPU_VENDOR_UNKNOWN);
+
+  return arch;
+}
+
+char* get_str_uarch(struct cpuInfo* cpu) {
+  return cpu->arch->uarch_str;
+}
+
+char* get_arch_cpuinfo_str(struct cpuInfo* cpu) {
+  return cpu->arch->cpuinfo_str;
+}
+
+void free_uarch_struct(struct uarch* arch) {
+  free(arch->uarch_str);
+  free(arch);
+}

src/riscv/uarch.h

@@ -0,0 +1,14 @@
+#ifndef __UARCH__
+#define __UARCH__
+
+#include <stdint.h>
+#include "riscv.h"
+
+struct uarch;
+
+char* get_arch_cpuinfo_str(struct cpuInfo* cpu);
+char* get_str_uarch(struct cpuInfo* cpu);
+void free_uarch_struct(struct uarch* arch);
+struct uarch* get_uarch(struct cpuInfo* cpu);
+
+#endif

src/riscv/udev.c

@@ -0,0 +1,138 @@
+#include <errno.h>
+#include <string.h>
+
+#include "../common/global.h"
+#include "udev.h"
+
+#define _PATH_DEVTREE          "/proc/device-tree/compatible"
+#define CPUINFO_UARCH_STR      "uarch\t\t: "
+#define CPUINFO_EXTENSIONS_STR "isa\t\t: "
+#define CPUINFO_RISCV_MVENDORID "mvendorid\t:"
+#define CPUINFO_RISCV_MARCHID   "marchid\t\t:"
+#define CPUINFO_RISCV_MIMPID    "mimpid\t\t:"
+#define DEVTREE_HARDWARE_FIELD 0
+
+char* get_field_from_devtree(int DEVTREE_FIELD) {
+  int filelen;
+  char* buf;
+  if((buf = read_file(_PATH_DEVTREE, &filelen)) == NULL) {
+    printWarn("read_file: %s: %s", _PATH_DEVTREE, strerror(errno));
+    return NULL;
+  }
+
+  // Here we would use strstr to find the comma.
+  // However, the device-tree file may contain NULL
+  // bytes in the middle of the string, which would
+  // cause strstr to return NULL even when there might
+  // be an occurence after the NULL byte
+  //
+  // We iterate the string backwards to find the field
+  // in position n-DEVTREE_HARDWARE_FIELD where n
+  // is the number of fields.
+  int i=0;
+  char* tmp1 = buf+filelen-1;
+  do {
+    tmp1--;
+    if(*tmp1 == ',') i++;
+  } while(tmp1 != buf && i <= DEVTREE_FIELD);
+
+  if(tmp1 == buf) {
+    printWarn("get_field_from_devtree: Unable to find field %d", DEVTREE_FIELD);
+    return NULL;
+  }
+
+  tmp1++;
+  int strlen = filelen-(tmp1-buf);
+  char* hardware = ecalloc(strlen, sizeof(char));
+  strncpy(hardware, tmp1, strlen-1);
+
+  return hardware;
+}
+
+char* parse_cpuinfo_field(char* field_str) {
+  int filelen;
+  char* buf;
+  if((buf = read_file(_PATH_CPUINFO, &filelen)) == NULL) {
+    printWarn("read_file: %s: %s", _PATH_CPUINFO, strerror(errno));
+    return NULL;
+  }
+
+  char* tmp = strstr(buf, field_str);
+  if(tmp == NULL) {
+    printWarn("parse_cpuinfo_field: Unable to find field %s", field_str);
+    return NULL;
+  }
+
+  tmp += strlen(field_str);
+  char* end = strstr(tmp, "\n");
+
+  if(end == NULL) {
+    printWarn("parse_cpuinfo_field: Unable to find newline after field %s", field_str);
+    return NULL;
+  }
+
+  int ret_strlen = (end-tmp);
+  char* ret = ecalloc(ret_strlen+1, sizeof(char));
+  strncpy(ret, tmp, sizeof(char) * ret_strlen);
+
+  return ret;
+}
+
+unsigned long parse_cpuinfo_field_uint64(char* field_str) {
+  int filelen;
+  char* buf;
+  if((buf = read_file(_PATH_CPUINFO, &filelen)) == NULL) {
+    printWarn("read_file: %s: %s", _PATH_CPUINFO, strerror(errno));
+    return 0;
+  }
+
+  char* tmp = strstr(buf, field_str);
+  if(tmp == NULL) return 0;
+  tmp += strlen(field_str);
+
+  char* end;
+  errno = 0;
+  unsigned long ret = strtoul(tmp, &end, 16);
+  if (errno != 0) {
+    printWarn("strtoul: %s: %s", strerror(errno), tmp);
+    return 0;
+  }
+
+  return ret;
+}
+
+// Creates and fills in the riscv_cpuinfo struct (which contains
+// mvendorid, marchid and mimpid) using cpuinfo to fetch the values.
+//
+// Every RISC-V hart (hardware thread) [1] provides a
+// marchid (Machine Architecture ID register) CSR that encodes its
+// base microarchitecture [2]. For more information about
+// marchid and the rest of values, see [3].
+// [1] https://groups.google.com/a/groups.riscv.org/g/sw-dev/c/QKjUDjz_vKo
+// [2] https://github.com/riscv/riscv-isa-manual/blob/main/marchid.md
+// [3] https://five-embeddev.com/riscv-priv-isa-manual/Priv-v1.12/machine.html#machine-architecture-id-register-marchid
+struct riscv_cpuinfo *get_riscv_cpuinfo(void) {
+  struct riscv_cpuinfo* ci = emalloc(sizeof(struct riscv_cpuinfo));
+
+  ci->mvendorid = parse_cpuinfo_field_uint64(CPUINFO_RISCV_MVENDORID);
+  ci->marchid = parse_cpuinfo_field_uint64(CPUINFO_RISCV_MARCHID);
+  ci->mimpid = parse_cpuinfo_field_uint64(CPUINFO_RISCV_MIMPID);
+
+  if (ci->mvendorid == 0 && ci->mvendorid == 0 && ci->mvendorid == 0)
+    return NULL;
+
+  return ci;
+}
+
+char* get_hardware_from_devtree(void) {
+  return get_field_from_devtree(DEVTREE_HARDWARE_FIELD);
+}
+
+char* get_uarch_from_cpuinfo(void) {
+  return parse_cpuinfo_field(CPUINFO_UARCH_STR);
+}
+
+char* get_extensions_from_cpuinfo(void) {
+  return parse_cpuinfo_field(CPUINFO_EXTENSIONS_STR);
+}
+

src/riscv/udev.h

@@ -0,0 +1,20 @@
+#ifndef __UDEV_RISCV__
+#define __UDEV_RISCV__
+
+#include "../common/udev.h"
+
+#define UNKNOWN -1
+
+// https://elixir.bootlin.com/linux/v6.10.6/source/arch/riscv/include/asm/cpufeature.h#L21
+struct riscv_cpuinfo {
+  unsigned long mvendorid;
+  unsigned long marchid;
+  unsigned long mimpid;
+};
+
+char* get_hardware_from_devtree(void);
+char* get_uarch_from_cpuinfo(void);
+char* get_extensions_from_cpuinfo(void);
+struct riscv_cpuinfo *get_riscv_cpuinfo(void);
+
+#endif

src/udev.c

@@ -1,74 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-
-#include "global.h"
-#include "cpuid.h"
-
-#define _PATH_SYS_SYSTEM    "/sys/devices/system"
-#define _PATH_SYS_CPU       _PATH_SYS_SYSTEM"/cpu"
-#define _PATH_ONE_CPU       _PATH_SYS_CPU"/cpu0"
-
-#define _PATH_FREQUENCY     _PATH_ONE_CPU"/cpufreq"
-#define _PATH_FREQUENCY_MAX _PATH_FREQUENCY"/cpuinfo_max_freq"
-#define _PATH_FREQUENCY_MIN _PATH_FREQUENCY"/cpuinfo_min_freq"
-
-#define DEFAULT_FILE_SIZE 4096
-
-long get_freq_from_file(char* path) {
-  int fd = open(path, O_RDONLY);
-
-  if(fd == -1) {
-    perror("open");
-    printBug("Could not open '%s'", path);
-    return UNKNOWN;
-  }
-
-  //File exists, read it
-  int bytes_read = 0;
-  int offset = 0;
-  int block = 1;
-  char* buf = malloc(sizeof(char)*DEFAULT_FILE_SIZE);
-  memset(buf, 0, sizeof(char)*DEFAULT_FILE_SIZE);
-
-  while (  (bytes_read = read(fd, buf+offset, block)) > 0 ) {
-    offset += bytes_read;
-  }
-
-  char* end;
-  errno = 0;
-  long ret = strtol(buf, &end, 10);
-  if(errno != 0) {
-    perror("strtol");
-    printBug("Failed parsing '%s' file. Read data was: '%s'", path, buf);
-    free(buf);
-    return UNKNOWN;
-  }
-  
-  // We will be getting the frequency in KHz
-  // We consider it is an error if frequency is
-  // greater than 10 GHz or less than 100 MHz
-  if(ret > 10000 * 1000 || ret <  100 * 1000) {
-    printBug("Invalid data was read from file '%s': %ld\n", path, ret);
-    return UNKNOWN;
-  }
-  
-  free(buf);
-  if (close(fd) == -1) {
-    perror("close");
-    printErr("Closing '%s' failed\n", path);    
-  }
-  
-  return ret/1000;
-}
-
-long get_max_freq_from_file() {
-  return get_freq_from_file(_PATH_FREQUENCY_MAX);
-}
-
-long get_min_freq_from_file() {
-  return get_freq_from_file(_PATH_FREQUENCY_MIN);
-}

src/udev.h

@@ -1,7 +0,0 @@
-#ifndef __UDEV__
-#define __UDEV__
-
-long get_max_freq_from_file();
-long get_min_freq_from_file();
-
-#endif

src/x86/apic.c

@@ -0,0 +1,486 @@
+#ifdef _WIN32
+  #define NOMINMAX
+  #include <windows.h>
+#elif defined __linux__
+  #define _GNU_SOURCE
+  #include <sched.h>
+#elif defined __FreeBSD__
+  #include <sys/param.h>
+  #include <sys/cpuset.h>
+#endif
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "apic.h"
+#include "cpuid_asm.h"
+#include "../common/global.h"
+
+/*
+ * bit_scan_reverse and create_mask code taken from:
+ * https://software.intel.com/content/www/us/en/develop/articles/intel-64-architecture-processor-topology-enumeration.html
+ */
+unsigned char bit_scan_reverse(uint32_t* index, uint64_t mask) {
+  for(uint64_t i = (8 * sizeof(uint64_t)); i > 0; i--) {
+    if((mask & (1ULL << (i-1))) != 0) {
+      *index = (uint64_t) (i-1);
+      break;
+    }
+  }
+  return (unsigned char) (mask != 0);
+}
+
+uint32_t create_mask(uint32_t num_entries, uint32_t *mask_width) {
+  uint32_t i = 0;
+  uint64_t k = 0;
+
+  // NearestPo2(numEntries) is the nearest power of 2 integer that is not less than numEntries
+  // The most significant bit of (numEntries * 2 -1) matches the above definition
+
+  k = (uint64_t)(num_entries) * 2 -1;
+
+  if (bit_scan_reverse(&i, k) == 0) {
+    if (mask_width) *mask_width = 0;
+    return 0;
+  }
+
+  if (mask_width) *mask_width = i;
+  if (i == 31) return (uint32_t ) -1;
+
+  return (1 << i) -1;
+}
+
+uint32_t get_apic_id(bool x2apic_id) {
+  uint32_t eax = 0;
+  uint32_t ebx = 0;
+  uint32_t ecx = 0;
+  uint32_t edx = 0;
+
+  if(x2apic_id) {
+    eax = 0x0000000B;
+    cpuid(&eax, &ebx, &ecx, &edx);
+    return edx;
+  }
+  else {
+    eax = 0x00000001;
+    cpuid(&eax, &ebx, &ecx, &edx);
+    return (ebx >> 24);
+  }
+}
+
+#ifdef __linux__
+int get_total_cores_module(int total_cores, int module) {
+  int total_modules = 2;
+  int32_t current_module_idx = -1;
+  bool end = false;
+  int32_t* core_types = emalloc(sizeof(uint32_t) * total_modules);
+  for(int i=0; i < total_modules; i++) core_types[i] = -1;
+  int cores_in_module = 0;
+  int i = 0;
+
+  // Get the original mask to restore it later
+  cpu_set_t original_mask;
+  if(sched_getaffinity(0, sizeof(original_mask), &original_mask) == -1) {
+    printWarn("sched_getaffinity: %s", strerror(errno));
+    return false;
+  }
+
+  while(!end) {
+    if(!bind_to_cpu(i)) {
+      return -1;
+    }
+    uint32_t eax = 0x0000001A;
+    uint32_t ebx = 0;
+    uint32_t ecx = 0;
+    uint32_t edx = 0;
+    cpuid(&eax, &ebx, &ecx, &edx);
+    int32_t core_type = eax >> 24 & 0xFF;
+    bool found = false;
+
+    for(int j=0; j < total_modules && !found; j++) {
+      if(core_types[j] == core_type) found = true;
+    }
+    if(!found) {
+      current_module_idx++;
+      core_types[current_module_idx] = core_type;
+    }
+    if(current_module_idx == module) {
+      cores_in_module++;
+      if(i+1 == total_cores) end = true;
+    }
+    else if(cores_in_module > 0) end = true;
+    i++;
+  }
+
+  // Reset the original affinity
+  if (sched_setaffinity (0, sizeof(original_mask), &original_mask) == -1) {
+    printWarn("sched_setaffinity: %s", strerror(errno));
+    return false;
+  }
+
+  //printf("Module %d has %d cores\n", module, cores_in_module);
+  return cores_in_module;
+}
+#endif
+
+bool fill_topo_masks_apic(struct topology* topo) {
+  uint32_t eax = 0x00000001;
+  uint32_t ebx = 0;
+  uint32_t ecx = 0;
+  uint32_t edx = 0;
+  uint32_t core_plus_smt_id_max_cnt;
+  uint32_t core_id_max_cnt;
+  uint32_t smt_id_per_core_max_cnt;
+
+  cpuid(&eax, &ebx, &ecx, &edx);
+
+  core_plus_smt_id_max_cnt = (ebx >> 16) & 0xFF;
+
+  eax = 0x00000004;
+  ecx = 0;
+  cpuid(&eax, &ebx, &ecx, &edx);
+
+  core_id_max_cnt = (eax >> 26) + 1;
+  smt_id_per_core_max_cnt = core_plus_smt_id_max_cnt / core_id_max_cnt;
+
+  topo->apic->smt_mask = create_mask(smt_id_per_core_max_cnt, &(topo->apic->smt_mask_width));
+  topo->apic->core_mask = create_mask(core_id_max_cnt,&(topo->apic->pkg_mask_shift));
+  topo->apic->pkg_mask_shift += topo->apic->smt_mask_width;
+  topo->apic->core_mask <<= topo->apic->smt_mask_width;
+  topo->apic->pkg_mask = (-1) ^ (topo->apic->core_mask | topo->apic->smt_mask);
+
+  return true;
+}
+
+bool fill_topo_masks_x2apic(struct topology* topo) {
+  int32_t level_type;
+  int32_t level_shift;
+
+  int32_t coreplus_smt_mask = 0;
+  bool level2 = false;
+  bool level1 = false;
+
+  uint32_t eax = 0;
+  uint32_t ebx = 0;
+  uint32_t ecx = 0;
+  uint32_t edx = 0;
+  uint32_t i = 0;
+
+  while(true) {
+    eax = 0x0000000B;
+    ecx = i;
+    cpuid(&eax, &ebx, &ecx, &edx);
+    if(ebx == 0) break;
+
+    level_type = (ecx >> 8) & 0xFF;
+    level_shift = eax & 0xFFF;
+
+    switch(level_type) {
+      case 1: // SMT
+        topo->apic->smt_mask = ~(0xFFFFFFFF << level_shift);
+        topo->apic->smt_mask_width = level_shift;
+        topo->smt_supported = ebx & 0xFFFF;
+        level1 = true;
+        break;
+      case 2: // Core
+        coreplus_smt_mask = ~(0xFFFFFFFF << level_shift);
+        topo->apic->pkg_mask_shift =  level_shift;
+        topo->apic->pkg_mask = (-1) ^ coreplus_smt_mask;
+        level2 = true;
+        break;
+      default:
+        printErr("Found invalid level when querying topology: %d", level_type);
+        break;
+    }
+
+    i++; // sublevel to query
+  }
+
+  if (level1 && level2) {
+    topo->apic->core_mask = coreplus_smt_mask ^ topo->apic->smt_mask;
+  }
+  else if (!level2 && level1) {
+    topo->apic->core_mask = 0;
+    topo->apic->pkg_mask_shift = topo->apic->smt_mask_width;
+    topo->apic->pkg_mask =  (-1) ^ topo->apic->smt_mask;
+  }
+  else {
+    printErr("SMT level was not found when querying topology");
+    return false;
+  }
+
+  return true;
+}
+
+// Not a very elegant solution. The width should always be as long
+// as the number of cores, but in the case of Xeon Phi KNL it is not
+uint32_t max_apic_id_size(uint32_t** cache_id_apic, struct topology* topo) {
+  uint32_t max = 0;
+
+  for(int i=0; i < topo->cach->max_cache_level; i++) {
+    for(int j=0; j < topo->total_cores_module; j++) {
+      if(cache_id_apic[j][i] > max) max = cache_id_apic[j][i];
+    }
+  }
+
+  max++;
+  if(max > (uint32_t) topo->total_cores_module) return max;
+  return topo->total_cores_module;
+}
+
+bool build_topo_from_apic(uint32_t* apic_pkg, uint32_t* apic_smt, uint32_t** cache_id_apic, struct topology* topo) {
+  uint32_t size = max_apic_id_size(cache_id_apic, topo);
+  uint32_t* sockets = ecalloc(size, sizeof(uint32_t));
+  uint32_t* smt = ecalloc(size, sizeof(uint32_t));
+  uint32_t* apic_id = ecalloc(size, sizeof(uint32_t));
+  uint32_t num_caches = 0;
+
+  // System topology
+  for(int i=0; i < topo->total_cores_module; i++) {
+    sockets[apic_pkg[i]] = 1;
+    smt[apic_smt[i]] = 1;
+  }
+  for(int i=0; i < topo->total_cores_module; i++) {
+    if(sockets[i] != 0)
+      topo->sockets++;
+    if(smt[i] != 0)
+      topo->smt_available++;
+  }
+
+  topo->logical_cores = topo->total_cores_module / topo->sockets;
+  topo->physical_cores = topo->logical_cores / topo->smt_available;
+
+  // Cache topology
+  for(int i=0; i < topo->cach->max_cache_level; i++) {
+    num_caches = 0;
+    memset(apic_id, 0, sizeof(uint32_t) * size);
+
+    for(int c=0; c < topo->total_cores_module; c++) {
+      apic_id[cache_id_apic[c][i]]++;
+    }
+    for(uint32_t c=0; c < size; c++) {
+      if(apic_id[c] > 0) num_caches++;
+    }
+
+    topo->cach->cach_arr[i]->num_caches = num_caches;
+  }
+
+  free(sockets);
+  free(smt);
+  free(apic_id);
+
+  return true;
+}
+
+void get_cache_topology_from_apic(struct topology* topo) {
+  uint32_t eax = 0x00000004;
+  uint32_t ebx = 0;
+  uint32_t ecx = 0;
+  uint32_t edx = 0;
+
+  for(int i=0; i < topo->cach->max_cache_level; i++) {
+    eax = 0x00000004;
+    ecx = i;
+
+    cpuid(&eax, &ebx, &ecx, &edx);
+
+    uint32_t SMTMaxCntPerEachCache = ((eax >> 14) & 0x7FF) + 1;
+    uint32_t dummy;
+    topo->apic->cache_select_mask[i] = create_mask(SMTMaxCntPerEachCache,&dummy);
+  }
+}
+
+bool apic_array_full(uint32_t* apic_ids, int n) {
+  for(int i=0; i < n; i++) {
+    if(apic_ids[i] == (uint32_t) -1) return false;
+  }
+  return true;
+}
+
+void add_apic_to_array(uint32_t apic, uint32_t* apic_ids, int n) {
+  int i=0;
+  int last=0;
+  bool found = false;
+
+  while(!found && i < n) {
+    if(apic_ids[i] == apic) found = true;
+    if(apic_ids[i] != (uint32_t) -1) last = i+1;
+    i++;
+  }
+
+  if(!found) {
+    apic_ids[last] = apic;
+    //printf("Added %d\n", apic);
+  }
+}
+
+bool fill_apic_ids(uint32_t* apic_ids, int first_core, int n, bool x2apic_id) {
+#ifdef __APPLE__
+  // macOS extremely dirty approach...
+  UNUSED(first_core);
+  printf("cpufetch is computing APIC IDs, please wait...\n");
+  bool end = false;
+  uint32_t apic;
+  for(int i=0; i < n; i++) apic_ids[i] = (uint32_t) -1;
+
+  while(!end) {
+    apic = get_apic_id(x2apic_id);
+
+    add_apic_to_array(apic, apic_ids, n);
+    end = apic_array_full(apic_ids, n);
+    usleep(1000);
+  }
+#else
+  #ifdef __linux__
+  // In Linux we reset the affinity; first we get the original mask
+  cpu_set_t original_mask;
+  if(sched_getaffinity(0, sizeof(original_mask), &original_mask) == -1) {
+    printWarn("sched_getaffinity: %s", strerror(errno));
+    return false;
+  }
+  #endif
+
+  for(int i=first_core; i < first_core+n; i++) {
+    if(!bind_to_cpu(i)) {
+      printErr("Failed binding the process to CPU %d", i);
+      return false;
+    }
+    apic_ids[i-first_core] = get_apic_id(x2apic_id);
+  }
+
+  #ifdef __linux__
+  // With the original mask previosly retrieved, we reset the affinity
+  if (sched_setaffinity (0, sizeof(original_mask), &original_mask) == -1) {
+    printWarn("sched_setaffinity: %s", strerror(errno));
+    return false;
+  }
+  #endif
+#endif
+
+  return true;
+}
+
+bool get_topology_from_apic(struct cpuInfo* cpu, struct topology* topo) {
+  if (topo->cach == NULL) {
+    printWarn("get_topology_from_apic: cach is NULL");
+    return false;
+  }
+
+  uint32_t apic_id;
+  uint32_t* apic_ids = emalloc(sizeof(uint32_t) * topo->total_cores_module);
+  uint32_t* apic_pkg = emalloc(sizeof(uint32_t) * topo->total_cores_module);
+  uint32_t* apic_core = emalloc(sizeof(uint32_t) * topo->total_cores_module);
+  uint32_t* apic_smt = emalloc(sizeof(uint32_t) * topo->total_cores_module);
+  uint32_t** cache_smt_id_apic = emalloc(sizeof(uint32_t*) * topo->total_cores_module);
+  uint32_t** cache_id_apic = emalloc(sizeof(uint32_t*) * topo->total_cores_module);
+  bool x2apic_id;
+
+  if(cpu->maxLevels >= 0x0000000B) {
+    uint32_t eax = 0x0000000B;
+    uint32_t ebx = 0;
+    uint32_t ecx = 0;
+    uint32_t edx = 0;
+
+    cpuid(&eax, &ebx, &ecx, &edx);
+
+    if(ebx == 0) x2apic_id = false;
+    else x2apic_id = true;
+  }
+  else {
+    x2apic_id = false;
+  }
+
+  for(int i=0; i < topo->total_cores_module; i++) {
+    cache_smt_id_apic[i] = emalloc(sizeof(uint32_t) * (topo->cach->max_cache_level));
+    cache_id_apic[i] = emalloc(sizeof(uint32_t) * (topo->cach->max_cache_level));
+  }
+  topo->apic->cache_select_mask = emalloc(sizeof(uint32_t) * (topo->cach->max_cache_level));
+  topo->apic->cache_id_apic = emalloc(sizeof(uint32_t) * (topo->cach->max_cache_level));
+
+  if(x2apic_id) {
+    if(!fill_topo_masks_x2apic(topo))
+      return false;
+  }
+  else {
+    if(!fill_topo_masks_apic(topo))
+      return false;
+  }
+
+  get_cache_topology_from_apic(topo);
+
+  if(!fill_apic_ids(apic_ids, cpu->first_core_id, topo->total_cores_module, x2apic_id))
+    return false;
+
+  for(int i=0; i < topo->total_cores_module; i++) {
+    apic_id = apic_ids[i];
+
+    apic_pkg[i] = (apic_id & topo->apic->pkg_mask) >> topo->apic->pkg_mask_shift;
+    apic_core[i] = (apic_id & topo->apic->core_mask) >> topo->apic->smt_mask_width;
+    apic_smt[i] = apic_id & topo->apic->smt_mask;
+
+    for(int c=0; c < topo->cach->max_cache_level; c++) {
+      cache_smt_id_apic[i][c] = apic_id & topo->apic->cache_select_mask[c];
+      cache_id_apic[i][c] = apic_id & (-1 ^ topo->apic->cache_select_mask[c]);
+    }
+  }
+
+  /* DEBUG
+  for(int i=0; i < topo->cach->max_cache_level; i++) {
+    printf("[CACH %1d]", i);
+    for(int j=0; j < topo->total_cores_module; j++)
+      printf("[%03d]", cache_id_apic[j][i]);
+    printf("\n");
+  }
+  for(int i=0; i < topo->total_cores_module; i++)
+    printf("[%2d] 0x%.8X\n", i, apic_pkg[i]);
+  printf("\n");
+  for(int i=0; i < topo->total_cores_module; i++)
+    printf("[%2d] 0x%.8X\n", i, apic_core[i]);
+  printf("\n");
+  for(int i=0; i < topo->total_cores_module; i++)
+    printf("[%2d] 0x%.8X\n", i, apic_smt[i]);*/
+
+  bool ret = build_topo_from_apic(apic_pkg, apic_smt, cache_id_apic, topo);
+
+  // Assumption: If we cant get smt_available, we assume it is equal to smt_supported...
+  if (!x2apic_id) {
+    printWarn("Can't read SMT from cpuid (needed level is 0x%.8X, max is 0x%.8X)", 0x0000000B, cpu->maxLevels);
+    topo->smt_supported = topo->smt_available;
+  }
+
+  free(apic_pkg);
+  free(apic_core);
+  free(apic_smt);
+  for(int i=0; i < topo->total_cores_module; i++) {
+    free(cache_smt_id_apic[i]);
+    free(cache_id_apic[i]);
+  }
+  free(cache_smt_id_apic);
+  free(cache_id_apic);
+
+  return ret;
+}
+
+uint32_t is_smt_enabled_amd(struct topology* topo) {
+#ifdef __APPLE__
+  UNUSED(topo);
+  return 1;
+#else
+  uint32_t id;
+
+  for(int i = 0; i < topo->total_cores; i++) {
+    if(!bind_to_cpu(i)) {
+      printErr("Failed binding to CPU %d", i);
+      return false;
+    }
+    id = get_apic_id(false) & 1; // get the last bit
+    if(id == 1) return 2; // We assume there isn't any AMD CPU with more than 2th per core.
+  }
+
+  return 1;
+#endif
+}

src/x86/apic.h

@@ -0,0 +1,24 @@
+#ifndef __APIC__
+#define __APIC__
+
+#include <stdbool.h>
+#include "cpuid.h"
+
+struct apic {
+  uint32_t pkg_mask;
+  uint32_t pkg_mask_shift;
+  uint32_t core_mask;
+  uint32_t smt_mask_width;
+  uint32_t smt_mask;
+  uint32_t* cache_select_mask;
+  uint32_t* cache_id_apic;
+};
+
+bool get_topology_from_apic(struct cpuInfo* cpu, struct topology* topo);
+uint32_t is_smt_enabled_amd(struct topology* topo);
+
+#ifdef __linux__
+int get_total_cores_module(int total_cores, int module);
+#endif
+
+#endif

src/x86/cpuid.h

@@ -0,0 +1,22 @@
+#ifndef __CPUID__
+#define __CPUID__
+
+#include "../common/cpu.h"
+
+struct cpuInfo* get_cpu_info(void);
+struct cache* get_cache_info(struct cpuInfo* cpu);
+struct frequency* get_frequency_info(struct cpuInfo* cpu);
+struct topology* get_topology_info(struct cpuInfo* cpu, struct cache* cach, int module);
+
+char* get_str_avx(struct cpuInfo* cpu);
+char* get_str_sse(struct cpuInfo* cpu);
+char* get_str_fma(struct cpuInfo* cpu);
+char* get_str_topology(struct cpuInfo* cpu, struct topology* topo, bool dual_socket);
+char* get_str_cpu_name_abbreviated(struct cpuInfo* cpu);
+
+void print_debug(struct cpuInfo* cpu);
+void print_raw(struct cpuInfo* cpu);
+
+void free_topo_struct(struct topology* topo);
+
+#endif

src/x86/freq/freq.c

@@ -0,0 +1,192 @@
+#define  _GNU_SOURCE
+#include <stdio.h>
+
+#include "../../common/global.h"
+#include "../uarch.h"
+#include "freq.h"
+#include "freq_nov.h"
+#include "freq_avx.h"
+#include "freq_avx512.h"
+
+#include <immintrin.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/time.h>
+#include <time.h>
+#include <errno.h>
+#include <string.h>
+#include <pthread.h>
+
+#define MAX_NUMBER_THREADS         512
+#define FREQ_VECTOR_SIZE         1<<16
+
+struct freq_thread {
+  // Inputs
+  struct cpuInfo* cpu;
+  bool end;
+  bool measure;
+  // Output
+  int32_t *max_pp;
+};
+
+double vector_average_harmonic(double* v, int len) {
+  double acc = 0.0;
+  for(int i=0; i < len; i++) {
+    acc += 1 / v[i];
+  }
+  return len / acc;
+}
+
+void sleep_ms(int64_t ms) {
+  struct timespec ts;
+  ts.tv_sec = ms / 1000;
+  ts.tv_nsec = (ms % 1000) * 1000000;
+  nanosleep(&ts, &ts);
+}
+
+void* measure_freq(void *freq_ptr) {
+  struct freq_thread* freq = (struct freq_thread*) freq_ptr;
+
+  char* end = NULL;
+  char* line = NULL;
+  size_t len = 0;
+  ssize_t read;
+  struct cpuInfo* cpu = freq->cpu;
+
+  int v = 0;
+  double* freq_vector = malloc(sizeof(double) * FREQ_VECTOR_SIZE);
+
+  while(!freq->end) {
+    if(!freq->measure) continue;
+
+    FILE* fp = fopen("/proc/cpuinfo", "r");
+    if(fp == NULL) return NULL;
+    while ((read = getline(&line, &len, fp)) != -1) {
+      if((line = strstr(line, "cpu MHz")) != NULL) {
+        line = strstr(line, "\t: ");
+        if(line == NULL) return NULL;
+        line += sizeof("\t: ") - 1;
+        double f = strtold(line, &end);
+        if(errno != 0) {
+          printf("strtol: %s", strerror(errno));
+          return NULL;
+        }
+
+        freq_vector[v] = f;
+        v++;
+      }
+    }
+    fclose(fp);
+    sleep_ms(500);
+  }
+
+  if (cpu->hybrid_flag) {
+    // We have an heterogeneous architecture. After measuring the
+    // frequency for all cores, we now need to compute the average
+    // independently for each CPU module.
+    struct cpuInfo* ptr = cpu;
+    double* freq_vector_ptr = freq_vector;
+
+    for (int i=0; i < cpu->num_cpus; ptr = ptr->next_cpu, i++) {
+      freq->max_pp[i] = vector_average_harmonic(freq_vector_ptr, ptr->topo->total_cores_module);
+      printWarn("AVX2 measured freq=%d (module %d)", freq->max_pp[i], i);
+
+      freq_vector_ptr = freq_vector_ptr + ptr->topo->total_cores_module;
+    }
+  }
+  else {
+    freq->max_pp[0] = vector_average_harmonic(freq_vector, v);
+    printWarn("AVX2 measured freq=%d\n", freq->max_pp[0]);
+  }
+
+  return NULL;
+}
+
+int32_t measure_frequency(struct cpuInfo* cpu, int32_t *max_freq_pp_vec) {
+  if (cpu->hybrid_flag && cpu->module_id > 0) {
+    // We have a hybrid architecture and we have already
+    // measured the frequency for this module in a previous
+    // call to this function, so now just return it.
+    return max_freq_pp_vec[cpu->module_id];
+  }
+
+  int ret;
+  int num_spaces;
+  struct freq_thread* freq_struct = malloc(sizeof(struct freq_thread));
+  freq_struct->end = false;
+  freq_struct->measure = false;
+  freq_struct->cpu = cpu;
+  freq_struct->max_pp = max_freq_pp_vec;
+
+  void* (*compute_function)(void*);
+
+  if(cpu->feat->AVX512 && vpus_are_AVX512(cpu)) {
+    printf("cpufetch is measuring the AVX512 frequency...");
+    compute_function = compute_avx512;
+    num_spaces = 45;
+  }
+  else if(cpu->feat->AVX || cpu->feat->AVX2) {
+    printf("cpufetch is measuring the AVX frequency...");
+    compute_function = compute_avx;
+    num_spaces = 42;
+  }
+  else {
+    printf("cpufetch is measuring the frequency (no vector instructions)...");
+    compute_function = compute_nov;
+    num_spaces = 63;
+  }
+
+  fflush(stdout);
+
+  pthread_t freq_t;
+  if(pthread_create(&freq_t, NULL, measure_freq, freq_struct)) {
+    fprintf(stderr, "Error creating thread\n");
+    return -1;
+  }
+
+  pthread_t* compute_th = malloc(sizeof(pthread_t) * cpu->topo->total_cores);
+  cpu_set_t cpus;
+  pthread_attr_t attr;
+  if ((ret = pthread_attr_init(&attr)) != 0) {
+    printErr("pthread_attr_init: %s", strerror(ret));
+    return -1;
+  }
+
+  for(int i=0; i < cpu->topo->total_cores; i++) {
+    // We might have called bind_to_cpu previously, binding the threads
+    // to a specific core, so now we must make sure we run the new thread
+    // on the correct core.
+    CPU_ZERO(&cpus);
+    CPU_SET(i, &cpus);
+    if ((ret = pthread_attr_setaffinity_np(&attr, sizeof(cpu_set_t), &cpus)) != 0) {
+      printErr("pthread_attr_setaffinity_np: %s", strerror(ret));
+      return -1;
+    }
+
+    ret = pthread_create(&compute_th[i], &attr, compute_function, NULL);
+
+    if(ret != 0) {
+      fprintf(stderr, "Error creating thread\n");
+      return -1;
+    }
+  }
+
+  sleep_ms(500);
+  freq_struct->measure = true;
+
+  for(int i=0; i < cpu->topo->total_cores; i++) {
+    if(pthread_join(compute_th[i], NULL)) {
+      fprintf(stderr, "Error joining thread\n");
+      return -1;
+    }
+    freq_struct->end = true;
+  }
+
+  if(pthread_join(freq_t, NULL)) {
+    fprintf(stderr, "Error joining thread\n");
+    return -1;
+  }
+
+  printf("\r%*c", num_spaces, ' ');
+  return max_freq_pp_vec[0];
+}

src/x86/freq/freq.h

@@ -0,0 +1,13 @@
+#ifndef __FREQ__
+#define __FREQ__
+
+#include <stdint.h>
+#include "../../common/cpu.h"
+#include "../../common/global.h"
+
+#define MEASURE_TIME_SECONDS         5
+#define LOOP_ITERS           100000000
+
+int32_t measure_frequency(struct cpuInfo* cpu, int32_t *max_freq_pp_vec);
+
+#endif

src/x86/freq/freq_avx.c

@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <immintrin.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/time.h>
+#include <time.h>
+#include <errno.h>
+#include <string.h>
+#include <pthread.h>
+#include <stdint.h>
+#include "freq.h"
+
+void* compute_avx(void * pthread_arg) {
+  UNUSED(pthread_arg);
+  bool end = false;
+
+  struct timeval begin, now;
+
+  __m256 a[8];
+  __m256 b[8];
+
+  for(int i=0; i < 8; i++) {
+    a[i] = _mm256_set1_ps(1.5);
+    b[i] = _mm256_set1_ps(1.2);
+  }
+
+  gettimeofday(&begin, NULL);
+  while(!end) {
+    for(uint64_t i=0; i < LOOP_ITERS; i++) {
+      a[0] = _mm256_add_ps(a[0], b[0]);
+      a[1] = _mm256_add_ps(a[1], b[1]);
+      a[2] = _mm256_add_ps(a[2], b[2]);
+      a[3] = _mm256_add_ps(a[3], b[3]);
+      a[4] = _mm256_add_ps(a[4], b[4]);
+      a[5] = _mm256_add_ps(a[5], b[5]);
+      a[6] = _mm256_add_ps(a[6], b[6]);
+      a[7] = _mm256_add_ps(a[7], b[7]);
+    }
+
+    gettimeofday(&now, NULL);
+    double elapsed = (now.tv_sec - begin.tv_sec) + ((now.tv_usec - begin.tv_usec)/1000000.0);
+    end = elapsed >= (double) MEASURE_TIME_SECONDS;
+  }
+
+  FILE* fp = fopen("/dev/null", "w");
+  if(fp == NULL) {
+    printf("fopen: %s", strerror(errno));
+  }
+  else {
+    for(int i=0; i < 8; i++)
+      fprintf(fp, "%f", a[i][0]);
+    fclose(fp);
+  }
+
+  return NULL;
+}
+

src/x86/freq/freq_avx.h

@@ -0,0 +1,6 @@
+#ifndef __FREQ_AVX__
+#define __FREQ_AVX__
+
+void* compute_avx(void * pthread_arg);
+
+#endif

src/x86/freq/freq_avx512.c

@@ -0,0 +1,57 @@
+#include <stdio.h>
+#include <immintrin.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <sys/time.h>
+#include <time.h>
+#include <errno.h>
+#include <string.h>
+#include <pthread.h>
+#include <stdint.h>
+#include "freq.h"
+
+void* compute_avx512(void * pthread_arg) {
+  UNUSED(pthread_arg);
+  bool end = false;
+
+  struct timeval begin, now;
+
+  __m512 a[8];
+  __m512 b[8];
+
+  for(int i=0; i < 8; i++) {
+    a[i] = _mm512_set1_ps(1.5);
+    b[i] = _mm512_set1_ps(1.2);
+  }
+
+  gettimeofday(&begin, NULL);
+  while(!end) {
+    for(uint64_t i=0; i < LOOP_ITERS; i++) {
+      a[0] = _mm512_add_ps(a[0], b[0]);
+      a[1] = _mm512_add_ps(a[1], b[1]);
+      a[2] = _mm512_add_ps(a[2], b[2]);
+      a[3] = _mm512_add_ps(a[3], b[3]);
+      a[4] = _mm512_add_ps(a[4], b[4]);
+      a[5] = _mm512_add_ps(a[5], b[5]);
+      a[6] = _mm512_add_ps(a[6], b[6]);
+      a[7] = _mm512_add_ps(a[7], b[7]);
+    }
+
+    gettimeofday(&now, NULL);
+    double elapsed = (now.tv_sec - begin.tv_sec) + ((now.tv_usec - begin.tv_usec)/1000000.0);
+    end = elapsed >= (double) MEASURE_TIME_SECONDS;
+  }
+
+  FILE* fp = fopen("/dev/null", "w");
+  if(fp == NULL) {
+    printf("fopen: %s", strerror(errno));
+  }
+  else {
+    for(int i=0; i < 8; i++)
+      fprintf(fp, "%f", a[i][0]);
+    fclose(fp);
+  }
+
+  return NULL;
+}
+