c++ - 处理器序列号

Question

我需要 CPU 的 PSN。我写的代码像

int info[4] = { -1 };
__cpuid(info, 1);
int family = info[0] & 0xf00;
int features = info[3] & 0xf000;

std::stringstream psn_id;

我如何获得处理器序列号？谁能帮帮我吗。谢谢你。

Answer 1

什么操作系统？如果是 Windows，那么您可以使用系统调用GetVolumeInformation()使用与文件系统关联的卷序列号来唯一标识 PC，而不是 CPU 序列号

DWORD serial;
::GetVolumeInformation(_T("C:\\"), NULL, 0, &serial, NULL, NULL, NULL, 0);

然后serial用作您的唯一标识符。

Answer 2

#include <stdio.h>

void getPSN(char *PSN)
{int varEAX, varEBX, varECX, varEDX;
   char str[9];
   //%eax=1 gives most significant 32 bits in eax 
   __asm__ __volatile__ ("cpuid": "=a" (varEAX), "=b" (varEBX), "=c" (varECX), "=d" (varEDX) : "a" (1));
   sprintf(str, "%08X", varEAX); //i.e. XXXX-XXXX-xxxx-xxxx-xxxx-xxxx
   sprintf(PSN, "%C%C%C%C-%C%C%C%C", str[0], str[1], str[2], str[3], str[4], str[5], str[6], str[7]);
   //%eax=3 gives least significant 64 bits in edx and ecx [if PN is enabled]
   __asm__ __volatile__ ("cpuid": "=a" (varEAX), "=b" (varEBX), "=c" (varECX), "=d" (varEDX) : "a" (3));
   sprintf(str, "%08X", varEDX); //i.e. xxxx-xxxx-XXXX-XXXX-xxxx-xxxx
   sprintf(PSN, "%s-%C%C%C%C-%C%C%C%C", PSN, str[0], str[1], str[2], str[3], str[4], str[5], str[6], str[7]);
   sprintf(str, "%08X", varECX); //i.e. xxxx-xxxx-xxxx-xxxx-XXXX-XXXX
   sprintf(PSN, "%s-%C%C%C%C-%C%C%C%C", PSN, str[0], str[1], str[2], str[3], str[4], str[5], str[6], str[7]);
}

int main()
{
    char PSN[30]; //24 Hex digits, 5 '-' separators, and a '\0'
    getPSN(PSN);
    printf("%s\n", PSN); //compare with: lshw | grep serial:
    return 0;
}