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x86: use raw opcode for xgetbv instruction

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This allows the CPU detection to work with assemblers not supporting
the xgetbv mnemonic.  These include clang and some BSD versions.

All AVX code will be written for yasm, where the main assembler
is not involved.

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit ef6695387522fc783105ac187c84beaa284e7cff)
This commit is contained in:
Mans Rullgard 2011-02-20 14:38:32 +00:00 committed by Michael Niedermayer
parent f9c61974ae
commit f1f792117f
1 changed files with 1 additions and 1 deletions
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2
libavutil/x86/cpu.c
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@ -36,7 +36,7 @@
: "0" (index));
#define xgetbv(index,eax,edx) \
__asm__ ("xgetbv" : "=a"(eax), "=d"(edx) : "c" (index))
__asm__ (".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c" (index))
/* Function to test if multimedia instructions are supported... */
int ff_get_cpu_flags_x86(void)