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feat: ensemble de fonctions permettant la détection de la CPU

This commit is contained in:
Nicolas Hordé 2007-04-02 14:05:16 +00:00
parent 3dd21b4d1f
commit bb49590329
1 changed files with 94 additions and 0 deletions
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lib/cpu.c Normal file
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#include "types.h"
#include "cpu.h"
#include "cpuid.h"
#include "memory.h"
#include "string.h"
static u8 *msg[] =
{
"mmx",
"mmx2",
"sse",
"sse2",
"sse3",
"fpu",
"3dNow!",
"3dNow Extended!",
"HyperThreading",
"apic",
};
static u8 space[]=" ";
void strcpuinfos(cpuinfo *proc,u8 *string)
{
}
u8 getcpuinfos(cpuinfo *proc)
{
u32 i,maxfunction,maxextended,unused,regeax,regebx,regecx,regedx;
bool *boolean;
if (!cansetflag (0x00040000)) return 1; /*386 processor - no cpuid*/
if (!cansetflag (0x00200000)) return 2; /*486 processor with no cpuid*/
cpuid(0, &maxfunction, &unused, &unused, &unused);
maxfunction &= 0xffff;
cpuid(0x80000000, &maxextended, &unused, &unused, &unused);
maxextended &= 0xffff;
if (maxfunction >= 1)
{
cpuid(1, &regeax, &regebx, &regecx, &regedx);
proc->stepping = (regeax & 0x0000000F);
proc->models = ((regeax>>4) & 0x0000000F);
proc->family = ((regeax>>8) & 0x0000000F);
proc->types = ((regeax>>12) & 0x00000003);
proc->emodels = ((regeax>>16) & 0x0000000F);
proc->efamily = ((regeax>>20) & 0x000000FF);
proc->brandid = (regeax & 0xF);
proc->linesize = ((regeax>>8) & 0xF);
proc->count = ((regeax>>16) & 0xF);
proc->apicid = ((regeax>>24) & 0xF);
proc->mmx=((regedx>>23) & 0x00000001);
proc->sse=((regedx>>25) & 0x00000001);
proc->sse2=((regedx>>26) & 0x00000001);
proc->sse3=(regecx & 0x00000001);
proc->fpu=(regedx & 0x00000001);
proc->htt=((regedx>>28) & 0x00000001);
}
if (maxextended >= 1)
{
cpuid(0x80000001, &regeax, &regebx, &regecx, &regedx);
proc->mmx2=((regedx>>22) & 0x00000001);
proc->apic=((regedx>>9) & 0x00000001);
proc->now3d=((regedx>>30) & 0x00000001);
proc->now3d2=((regedx>>31) & 0x00000001);
}
if (maxextended >= 4)
{
int i;
for(i=0;i<3;i++)
cpuid(0x80000002+i, &regeax, &regebx, &regecx, &regedx);
memcpy(&regeax,&proc->detectedname[0+i*16],4,1);
memcpy(&regebx,&proc->detectedname[4+i*16],4,1);
memcpy(&regecx,&proc->detectedname[8+i*16],4,1);
memcpy(&regedx,&proc->detectedname[12+i*16],4,1);
}
boolean=&proc->mmx;
i=0;
for(i=0;i<10;i++)
if (*(boolean++)==1)
{
strcat(msg[i],&proc->techs);
strcat(space,&proc->techs);
}
return 0;
}