Commit d05f808d authored by Zuxy Meng's avatar Zuxy Meng
Browse files

Remove CPUID availability check on AMD64 as it's architectural.

Originally committed as revision 17543 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent f8c96d01
......@@ -42,19 +42,13 @@ int mm_support(void)
int rval = 0;
int eax, ebx, ecx, edx;
int max_std_level, max_ext_level, std_caps=0, ext_caps=0;
x86_reg a, c;
#if ARCH_X86_64
#define PUSHF "pushfq\n\t"
#define POPF "popfq\n\t"
#else
#define PUSHF "pushfl\n\t"
#define POPF "popfl\n\t"
#endif
#if ARCH_X86_32
x86_reg a, c;
__asm__ volatile (
/* See if CPUID instruction is supported ... */
/* ... Get copies of EFLAGS into eax and ecx */
PUSHF
"pushfl\n\t"
"pop %0\n\t"
"mov %0, %1\n\t"
......@@ -62,10 +56,10 @@ int mm_support(void)
/* to the EFLAGS reg */
"xor $0x200000, %0\n\t"
"push %0\n\t"
POPF
"popfl\n\t"
/* ... Get the (hopefully modified) EFLAGS */
PUSHF
"pushfl\n\t"
"pop %0\n\t"
: "=a" (a), "=c" (c)
:
......@@ -74,6 +68,7 @@ int mm_support(void)
if (a == c)
return 0; /* CPUID not supported */
#endif
cpuid(0, max_std_level, ebx, ecx, edx);
......
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