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util: Fix cpuid invocation for x86_64.

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This commit is contained in:
José Fonseca 2009-10-04 12:49:31 +01:00
parent eb2e41f0c6
commit 7a7dfb09aa
1 changed files with 23 additions and 11 deletions
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34
src/gallium/auxiliary/util/u_cpu_detect.c
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@ -336,22 +336,34 @@ cpuid(unsigned int ax, unsigned int *p)
{
int ret = -1;
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
#if defined(PIPE_CC_GCC)
__asm __volatile
("movl %%ebx, %%esi\n\t"
"cpuid\n\t"
"xchgl %%ebx, %%esi"
: "=a" (p[0]), "=S" (p[1]),
"=c" (p[2]), "=d" (p[3])
: "0" (ax));
#if defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86)
__asm __volatile (
"movl %%ebx, %%esi\n\t"
"cpuid\n\t"
"xchgl %%ebx, %%esi"
: "=a" (p[0]),
"=S" (p[1]),
"=c" (p[2]),
"=d" (p[3])
: "0" (ax)
);
ret = 0;
#elif defined(PIPE_CC_GCC) && defined(PIPE_ARCH_X86_64)
__asm __volatile (
"movq %%rbx, %%rsi\n\t"
"cpuid\n\t"
"xchgq %%rbx, %%rsi"
: "=a" (p[0]),
"=S" (p[1]),
"=c" (p[2]),
"=d" (p[3])
: "0" (ax)
);
ret = 0;
#elif defined(PIPE_CC_MSVC)
__cpuid(ax, p);
ret = 0;
#endif
#endif
return ret;