[v0.88][ARM] Add very basic SoC detection (Android only)

Makefile

@@ -12,13 +12,13 @@ ifneq ($(OS),Windows_NT)
 	arch := $(shell uname -m)
 	ifeq ($(arch), x86_64)
 		SRC_DIR=src/x86/
-		SOURCE += $(COMMON_SRC) $(SRC_DIR)cpuid.c $(SRC_DIR)apic.c $(SRC_DIR)cpuid_asm.c $(SRC_DIR)uarch.c 
+		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 
 		CXXFLAGS += -DARCH_X86
 	else
 		SRC_DIR=src/arm/
-		SOURCE += $(COMMON_SRC) $(SRC_DIR)midr.c $(SRC_DIR)uarch.c 
-		HEADERS += $(COMMON_HDR) $(SRC_DIR)midr.h $(SRC_DIR)uarch.h 
+		SOURCE += $(COMMON_SRC) $(SRC_DIR)midr.c $(SRC_DIR)uarch.c $(SRC_DIR)soc.c
+		HEADERS += $(COMMON_HDR) $(SRC_DIR)midr.h $(SRC_DIR)uarch.h  $(SRC_DIR)soc.h
 		CXXFLAGS += -DARCH_ARM -Wno-unused-parameter
 	endif
 		

src/arm/midr.c

@@ -8,6 +8,7 @@
 #include "../common/global.h"
 #include "midr.h"
 #include "uarch.h"
+#include "soc.h"
 
 #define STRING_UNKNOWN    "Unknown"
 
@@ -165,9 +166,7 @@ struct cpuInfo* get_cpu_info() {
   cpu->num_cpus = sockets;
   cpu->hv = malloc(sizeof(struct hypervisor));
   cpu->hv->present = false;
-  cpu->soc = SOC_VENDOR_UNKNOWN;
-  cpu->soc_name = malloc(sizeof(char)*(strlen(STRING_UNKNOWN)+1));
-  snprintf(cpu->soc_name, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
+  cpu->soc = get_soc();  
 
   return cpu;
 }
@@ -195,7 +194,7 @@ char* get_str_peak_performance(struct cpuInfo* cpu) {
     }
   }
 
-  double flops;
+  double flops = 0.0;
   
   ptr = cpu;
   for(int i=0; i < cpu->num_cpus; ptr = ptr->next_cpu, i++) {
@@ -213,7 +212,7 @@ char* get_str_peak_performance(struct cpuInfo* cpu) {
 }
 
 char* get_soc_name(struct cpuInfo* cpu) { 
-  return cpu->soc_name;    
+  return cpu->soc->raw_name;    
 }
 
 void print_debug(struct cpuInfo* cpu) {

src/arm/soc.c

@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "soc.h"
+
+#define STRING_UNKNOWN    "Unknown"
+
+#ifdef __ANDROID__
+#include <sys/system_properties.h>
+
+static inline int android_property_get(const char* key, char* value) {
+  return __system_property_get(key, value);
+}
+
+char* android_guess_soc() {
+  char* raw_name = NULL;
+  char tmp[100];
+  int property_len = 0;
+  
+  property_len = android_property_get("ro.mediatek.platform", (char *) &tmp);
+  if(property_len > 0) {
+    raw_name = malloc(sizeof(char) * (property_len + 1));
+    strcpy(raw_name, tmp);
+    raw_name[property_len] = '\0';
+    return raw_name;
+  }
+  
+  property_len = android_property_get("ro.product.board", (char *) &tmp);
+  if(property_len > 0) {    
+    raw_name = malloc(sizeof(char) * (property_len + 1));
+    strcpy(raw_name, tmp);
+    raw_name[property_len] = '\0';
+    return raw_name;
+  }    
+  
+  return NULL;
+}
+#endif
+
+struct system_on_chip* get_soc() {
+  struct system_on_chip* soc = malloc(sizeof(struct system_on_chip));
+  soc->raw_name = NULL;
+  
+#ifdef __ANDROID__
+  soc->raw_name = android_guess_soc();
+#endif
+
+  if(soc->raw_name == NULL) {
+    soc->raw_name = malloc(sizeof(char) * (strlen(STRING_UNKNOWN)+1));
+    snprintf(soc->raw_name, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
+  }
+  
+  return soc;    
+}

src/arm/soc.h

@@ -0,0 +1,10 @@
+#ifndef __SOC__
+#define __SOC__
+
+struct system_on_chip {
+  char* raw_name;    
+};
+
+struct system_on_chip* get_soc();
+
+#endif

src/common/cpu.h

@@ -124,8 +124,7 @@ struct cpuInfo {
 #endif
 
 #ifdef ARCH_ARM
-  VENDOR soc;
-  char* soc_name;
+  struct system_on_chip* soc;
   // If SoC contains more than one CPU and they
   // are different, the others will be stored in
   // the next_cpu field