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Zero ecx with a mov instruction 

PGI assembler does not like the initialization in the constraints.
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Martin Kroeker 2019-06-16 15:04:10 +02:00 committed by GitHub
parent 6d3efb2b58
commit bbd4bb0154
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1 changed files with 3 additions and 2 deletions
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5
common_x86_64.h
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@ -129,12 +129,13 @@ static __inline void cpuid(int op, int *eax, int *ebx, int *ecx, int *edx){
*ecx=cpuinfo[2]; *ecx=cpuinfo[2];
*edx=cpuinfo[3]; *edx=cpuinfo[3];
#else #else
__asm__ __volatile__("cpuid" __asm__ __volatile__("mov %%ecx, 0;"
"cpuid"
: "=a" (*eax), : "=a" (*eax),
"=b" (*ebx), "=b" (*ebx),
"=c" (*ecx), "=c" (*ecx),
"=d" (*edx) "=d" (*edx)
: "0" (op), "c"(0)); : "0" (op));
#endif #endif
} }