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32 lines
723 B
C
32 lines
723 B
C
#include <stdio.h>
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int main() {
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unsigned int CPUInfo0;
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unsigned int CPUInfo1;
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unsigned int CPUInfo2;
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unsigned int CPUInfo3;
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unsigned int InfoType;
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#if defined(__i386__) && defined(__PIC__)
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/* %ebx is PIC register in 32-bit, so mustn't clobber it. */
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__asm__ __volatile__ (
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"xchg %%ebx, %1\n"
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"cpuid\n"
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"xchg %%ebx, %1\n":
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"=a" (CPUInfo0),
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"=r" (CPUInfo1),
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"=c" (CPUInfo2),
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"=d" (CPUInfo3) :
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"0" (InfoType), "2" (0)
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);
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#else
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__asm__ __volatile__ (
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"cpuid":
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"=a" (CPUInfo0),
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"=b" (CPUInfo1),
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"=c" (CPUInfo2),
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"=d" (CPUInfo3) :
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"0" (InfoType), "2" (0)
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);
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#endif
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return 0;
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}
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