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| author | Mans Rullgard <mans@mansr.com> | 2011-02-20 14:38:32 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-02-22 02:38:41 +0100 |
| commit | f1f792117f3375478fb0043369014b575dfa5e75 (patch) | |
| tree | 7014f5319f12b51a8c6e33193a761a2a511df7be | |
| parent | f9c61974ae93258f78b9bb811476cad2062b9b76 (diff) | |
| download | ffmpeg-f1f792117f3375478fb0043369014b575dfa5e75.tar.gz | |
x86: use raw opcode for xgetbv instruction
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)
| -rw-r--r-- | libavutil/x86/cpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavutil/x86/cpu.c b/libavutil/x86/cpu.c index 2caac2fb23..14d0fe10c8 100644 --- a/libavutil/x86/cpu.c +++ b/libavutil/x86/cpu.c @@ -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) |