how to get cpuid?

[lfreist]

What exactly do you mean by cpuid?

If you mean the x86 instruction: hwinfo uses it on x86 machines to get processor information and provides them in the ˋhwinfo::CPUˋ class.

[xinsuinizhuan]

yes, in x86， this code could get the cpu id: void getCpuId(int cpuInfo[], int infoType) {

if 0

ifdef Q_OS_WIN

// #include "intrin.h"
//__cpuid(cpuInfo, infoType);return;

if _MSC_VER

int excValue = 0;
_asm {
    mov edi, cpuInfo;
    mov eax, infoType;
    mov ecx, excValue;
    cpuid;
    mov [edi], eax;
    mov [edi+4], ebx;
    mov [edi+8], ecx;
    mov [edi+12], edx;
}

else

asm volatile
(
    "cpuid"
    : "=a"(cpuInfo[0]), "=b"(cpuInfo[1]), "=c"(cpuInfo[2]), "=d"(cpuInfo[3])
    : "a"(infoType)
);

endif

endif

endif

}

QString getCpuId2() { QString cpu_id; int cpuInfo[4] = {0}; getCpuId(cpuInfo, 1);

QString str0 = QString::number((quint32)cpuInfo[3], 16).toUpper();
str0 = str0.rightJustified(8, '0');
QString str1 = QString::number((quint32)cpuInfo[0], 16).toUpper();
str1 = str1.rightJustified(8, '0');
cpu_id = str0 + str1;
return cpu_id;

}

but how to get the cpuid in linux?

[lfreist]

Looks like this question is not related to hwinfo. Please consider using c++/x86/assembler related forums for this kind of questions.

However cpuid.h implements a platform independent cpuid call.