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Add code to detect CPU microarchitecture (Intel only, at the moment)

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Dr-Noob
2020-08-31 13:18:25 +02:00
parent d998acdcdf
commit 5148962fa3
5 changed files with 234 additions and 2 deletions
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20
src/cpuid.c
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@@ -15,6 +15,7 @@
#include "cpuid_asm.h"
#include "global.h"
#include "apic.h"
#include "uarch.h"
#define VENDOR_INTEL_STRING "GenuineIntel"
#define VENDOR_AMD_STRING "AuthenticAMD"
@@ -165,6 +166,23 @@ char* get_str_cpu_name_internal() {
return name;
}
struct uarch* get_cpu_uarch() {
uint32_t eax = 0x00000001;
uint32_t ebx = 0;
uint32_t ecx = 0;
uint32_t edx = 0;
cpuid(&eax, &ebx, &ecx, &edx);
uint32_t stepping = eax & 0xF;
uint32_t model = (eax >> 4) & 0xF;
uint32_t emodel = (eax >> 16) & 0xF;
uint32_t family = (eax >> 8) & 0xF;
uint32_t efamily = (eax >> 20) & 0xFF;
return get_uarch_from_cpuid(efamily, family, emodel, model, (int)stepping);
}
struct cpuInfo* get_cpu_info() {
struct cpuInfo* cpu = malloc(sizeof(struct cpuInfo));
init_cpu_info(cpu);
@@ -258,6 +276,8 @@ struct cpuInfo* get_cpu_info() {
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);
}
cpu->arch = get_cpu_uarch(cpu);
return cpu;
}