CPUID: Difference between revisions
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s/dword/uint32_t/g |
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<source lang="c"> |
<source lang="c"> |
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/* TODO: You should use the <cpuid.h> header that comes with GCC instead. */ |
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enum cpuid_requests { |
enum cpuid_requests { |
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CPUID_GETVENDORSTRING, |
CPUID_GETVENDORSTRING, |
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* will be modified by the operation, so we need to tell the compiler about it. |
* will be modified by the operation, so we need to tell the compiler about it. |
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*/ |
*/ |
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static inline void cpuid(int code, |
static inline void cpuid(int code, uint32_t *a, uint32_t *d) { |
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asm volatile("cpuid":"=a"(*a),"=d"(*d):"a"(code):"ecx","ebx"); |
asm volatile("cpuid":"=a"(*a),"=d"(*d):"a"(code):"ecx","ebx"); |
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} |
} |
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/** issue a complete request, storing general registers output as a string |
/** issue a complete request, storing general registers output as a string |
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*/ |
*/ |
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static inline int cpuid_string(int code, |
static inline int cpuid_string(int code, uint32_t where[4]) { |
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asm volatile("cpuid":"=a"(*where),"=b"(*(where+1)), |
asm volatile("cpuid":"=a"(*where),"=b"(*(where+1)), |
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"=c"(*(where+2)),"=d"(*(where+3)):"a"(code)); |
"=c"(*(where+2)),"=d"(*(where+3)):"a"(code)); |
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