获取cpu真实型号

感谢文洋兄的思路。亲测有效。

[root@storage GetCpuType]# ./main.o
Intel(R) Xeon(R) CPU C5528 @ 2.13GHz

#include <stdio.h>
#include <stdlib.h>

char x86_model_id[64];

static inline void
cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,
unsigned int *d)
{
__asm__ __volatile__ (".byte 0x53\n\tcpuid\n\t"
"movl %%ebx, %%esi\n\t.byte 0x5b"
: "=a" (*a),
"=S" (*b),
"=c" (*c),
"=d" (*d)
: "a" (op));
}

static void get_model_name()
{
unsigned int *v;
char *p, *q;

v = (unsigned int *)x86_model_id;
cpuid(0x80000002, &v[0], &v[1], &v[2], &v[3]);
cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]);
cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]);
x86_model_id[48] = 0;

/*
* Intel chips right-justify this string for some dumb reason;
* undo that brain damage:
*/
p = q = &x86_model_id[0];
while (*p == ' ')
p++;
if (p != q) {
while (*p)
*q++ = *p++;
while (q <= &x86_model_id[48])
*q++ = '\0'; /* Zero-pad the rest */
}
}

int main()
{
get_model_name();

printf("%s \n", x86_model_id);
return 0;
}