Linux so文件 如何获取CPUID

#include
#include

int main(int argc, char* argv[])
{
unsigned long s1,s2,s3,s4;
char string[128];
char szCpuId[1024];
char p1[128], p2[128];
unsigned int eax = 0;
unsigned int ebx,ecx,edx;

asm volatile
( "cpuid"
: "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx)
: "0"(0)
);
snprintf(szCpuId, 5, "%s", (char *)&ebx);
snprintf(szCpuId+4, 5, "%s", (char *)&edx);
snprintf(szCpuId+8, 5, "%s", (char *)&ecx);

asm volatile
( "movl $0x01 , %%eax ; \n\t"
"xorl %%edx , %%edx ;\n\t"
"cpuid ;\n\t"
"movl %%edx ,%0 ;\n\t"
"movl %%eax ,%1 ; \n\t"
:"=m"(s1),"=m"(s2)
);

sprintf((char *)p1, "-%08X\n%08X-", s1, s2);
snprintf(szCpuId+12, 20, "%s", (char *)p1);

asm volatile
( "movl $0x03,%%eax ;\n\t"
"xorl %%ecx,%%ecx ;\n\t"
"xorl %%edx,%%edx ;\n\t"
"cpuid ;\n\t"
"movl %%edx,%0 ;\n\t"
"movl %%ecx,%1 ;\n\t"
:"=m"(s3),"=m"(s4)
);

sprintf((char *)p2, "%08X-%08X\n", s3, s4);
snprintf(szCpuId+31, 19, "%s", (char *)p2);

printf((char*)szCpuId);

return 0;
}

cat /proc/cpuinfo

被抢答了。
cat /proc/cpuinfo
cat /proc/meminfo