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GCC/clang cpuid intrinsic instead of inline asm

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leblane 2023-04-28 19:37:02 +03:00
parent 7e1dcb8129
commit e5e82457d2
1 changed files with 4 additions and 7 deletions
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11
Source/ispc_texcomp/ispc_texcomp.cpp
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@ -22,6 +22,8 @@
#if defined(_MSC_VER) #if defined(_MSC_VER)
#include <intrin.h> #include <intrin.h>
#else
#include <cpuid.h>
#endif #endif
#include "ispc_texcomp.h" #include "ispc_texcomp.h"
@ -54,13 +56,8 @@ void ISPCInit()
} }
#else #else
{ {
unsigned int eax = 0x80000001; unsigned int eax, ebx, ecx, edx;
unsigned int ebx = 0; __get_cpuid(0x80000001, &eax, &ebx, &ecx, &edx);
unsigned int ecx = 0;
unsigned int edx = 0;
asm volatile("cpuid"
: "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx)
: "a"(eax));
isAmd = (ecx & (1 << 6)) != 0; isAmd = (ecx & (1 << 6)) != 0;
} }
#endif #endif