Hello,
with cpuinfo.c and cpuinfo.h
Alain ...
/* Hurd /proc filesystem, implementation of process directories.
Copyright (C) 2010 Free Software Foundation, Inc.
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at
your option) any later version.
The GNU Hurd 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.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* gcc cpuinfo.c -o cpuinfo `pkg-config --cflags glib-2.0` -lm */
#include "cpuinfo.h"
/* This module implements the cpuinfo directory */
/* Helper functions */
#define cpuid(func,ax,bx,cx,dx) __asm__ __volatile__ ("cpuid": "=a" (ax), "=b"
(bx), "=c" (cx), "=d" (dx) : "a" (func));
void cpuinfo_string(char ** result, int * result_length, CpuInfo cpuinfo)
{
int len;
char * result_processor;
int i=0;
char * tmp_string;
cpuinfo_processor_string(&result_processor,cpuinfo,0);
len = asprintf(result,"processor\t: %d\n%s\n",i,result_processor);
for(i=1; i< cpuinfo.cpu_cores; i++)
{
/* by processor */
cpuinfo_processor_string(&result_processor,cpuinfo,i);
tmp_string = *result;
len = asprintf(result,"%sprocessor\t: %d\n%s",*result,i,result_processor);
free(tmp_string);
}
*result_length = len;
}
void cpuinfo_processor_string(char ** result, CpuInfo cpuinfo, int i)
{
char * tmp_string;
/* by processor */
/* Vendor */
asprintf(result,"vendor_id\t: %s\n",cpuinfo.vendor);
/* Model Name */
tmp_string = *result;
asprintf(result,"%smodel name\t: %s\n",*result,cpuinfo.model_name);
free(tmp_string);
/* Core ID */
tmp_string = *result;
asprintf(result,"%score id\t\t: %d\n",*result,i);
free(tmp_string);
/* CPUID LEVEL */
tmp_string = *result;
asprintf(result,"%scpuid-level\t: %d\n",*result,cpuinfo.cpuid_level);
free(tmp_string);
}
void debug_cpu(void){
guint32 func;
guint32 eax=0,ebx=0,ecx=0,edx=0;
guint32 tmp;
guint32 size=0;
guint32 i;
/* MAX CPUID INSTRUCTION LEVELS */
/* State */
/* EAX 0 http://en.wikipedia.org/wiki/CPUID */
func=0;
cpuid(func,eax,ebx,ecx,edx);
size = eax & 0xffff; /* The high-order word is non-zero on some Cyrix CPUs */
for (i=0; i <= size; i++)
{
cpuid(i,eax,ebx,ecx,edx);
printf("i %08x a %08x b %08x c %08x d %08x\n",i,eax,ebx,ecx,edx);
}
/* EAX 0x80000000 http://en.wikipedia.org/wiki/CPUID */
func=0x80000000;
cpuid(func,eax,ebx,ecx,edx);
printf("a %08x b %08x c %08x d %08x\n",eax,ebx,ecx,edx);
/* cpuid level */
size = eax; /* The high-order word is non-zero on some Cyrix CPUs */
for (i=0x80000000; i <= size; i++)
{
cpuid(i,eax,ebx,ecx,edx);
printf("i %08x a %08x b %08x c %08x d %08x\n",i,eax,ebx,ecx,edx);
}
/* Brand */
func=0;
cpuid(func,eax,ebx,ecx,edx);
switch(ebx){
case 0x756e6547: /* Intel */
printf("Intel\n");
break;
case 0x68747541: /* AMD */
printf("AMD\n");
break;
case 0x69727943: /* Cyrix */
printf("Cyrix \n");
break;
default:
printf("Unknown vendor\n");
break;
}
}
void init_cpuinfo(CpuInfo * cpuinfo)
{
guint32 func;
guint32 eax=0,ebx=0,ecx=0,edx=0;
guint32 tmp;
guint32 size=0;
guint32 i;
int j;
char c;
char *result;
int result_length;
/* EAX 0 http://en.wikipedia.org/wiki/CPUID */
func=0;
cpuid(func,eax,ebx,ecx,edx);
size = eax & 0xffff; /* The high-order word is non-zero on some Cyrix CPUs */
cpuinfo->cpuid_level = size;
/* EAX 0x00000004 http://en.wikipedia.org/wiki/CPUID */
func=1;
cpuid(func,eax,ebx,ecx,edx);
cpuinfo->cpu_cores = ebx >> 16 & 0xFF;
/* Vendor */
func=0;
cpuid(func,eax,ebx,ecx,edx);
i = 0;
/* ebx */
tmp = ebx;
for(j=0; j<4; j++)
{
c=tmp&0xff;
cpuinfo->vendor[i]=c;
tmp = tmp >> 8;
i++;
}
/* edx */
tmp = edx;
for(j=0; j<4; j++)
{
c=tmp&0xff;
cpuinfo->vendor[i]=c;
tmp = tmp >> 8;
i++;
}
/* ecx */
tmp = ecx;
for(j=0; j<4; j++)
{
c=tmp&0xff;
cpuinfo->vendor[i]=c;
tmp = tmp >> 8;
i++;
}
cpuinfo->vendor[i]=0;
/* EAX 0x80000002 http://en.wikipedia.org/wiki/CPUID */
/* Model */
i = 0;
for(func=0x80000002;func<= 0x80000004; func++)
{
cpuid(func,eax,ebx,ecx,edx);
/* eax */
tmp = eax;
for(j=0; j<4; j++)
{
c=tmp&0xff;
cpuinfo->model_name[i]=c;
tmp = tmp >> 8;
i++;
}
/* ebx */
tmp = ebx;
for(j=0; j<4; j++)
{
c=tmp&0xff;
cpuinfo->model_name[i]=c;
tmp = tmp >> 8;
i++;
}
/* ecx */
tmp = ecx;
for(j=0; j<4; j++)
{
c=tmp&0xff;
cpuinfo->model_name[i]=c;
tmp = tmp >> 8;
i++;
}
/* edx */
tmp = edx;
for(j=0; j<4; j++)
{
c=tmp&0xff;
cpuinfo->model_name[i]=c;
tmp = tmp >> 8;
i++;
}
}
cpuinfo->model_name[i]=0;
}
int main(int argc, char * argv[]){
CpuInfo cpuinfo;
char *result;
int result_length;
debug_cpu();
init_cpuinfo(&cpuinfo);
cpuinfo_string(&result,&result_length,cpuinfo);
printf("%d\n%s\n",result_length, result);
return 0;
}
/* Hurd /proc filesystem, implementation of process directories.
Copyright (C) 2010 Free Software Foundation, Inc.
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at
your option) any later version.
The GNU Hurd 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.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifndef CPUINFO_H
#define CPUINFO_H
#include <stdio.h>
#include <math.h>
/* guint16 */
#include <glib.h>
#include <stdlib.h>
typedef struct cpuinfo
{
short cpu_cores;
char vendor[13];
char model_name[49];
short cpuid_level;
} CpuInfo;
/* cpuinfo string */
void cpuinfo_string(char ** result, int * result_length, CpuInfo cpuinfo);
/* cpuinfo string for a core */
void cpuinfo_processor_string(char ** result, CpuInfo cpuinfo, int i);
#endif
