highperfocused/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

check for x86 bswap instruction

Browse Source 
Originally committed as revision 12375 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård
2008-03-08 18:33:07 +00:00
parent a73cbf9709
commit 6bd859d67e
2 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
configure vendored
View File

@@ -708,6 +708,7 @@ HAVE_LIST="
$THREADS_LIST $THREADS_LIST
altivec_h altivec_h
arpa_inet_h arpa_inet_h
bswap
byteswap_h byteswap_h
closesocket closesocket
cmov cmov
@@ -1504,6 +1505,8 @@ EOF
# check whether binutils is new enough to compile SSSE3 # check whether binutils is new enough to compile SSSE3
enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"' enabled ssse3 && check_asm ssse3 '"pabsw %xmm0, %xmm0"'
check_asm bswap '"bswap %%eax" ::: "%eax"'
fi fi
# check for assembler specific support # check for assembler specific support
@@ -1989,9 +1992,6 @@ if enabled bigendian; then
echo "WORDS_BIGENDIAN=yes" >> config.mak echo "WORDS_BIGENDIAN=yes" >> config.mak
echo "#define WORDS_BIGENDIAN 1" >> $TMPH echo "#define WORDS_BIGENDIAN 1" >> $TMPH
fi fi
if enabled mmx; then
echo "#define __CPU__ 586" >> $TMPH
fi
if enabled sdl; then if enabled sdl; then
echo "SDL_LIBS=`"${SDL_CONFIG}" --libs`" >> config.mak echo "SDL_LIBS=`"${SDL_CONFIG}" --libs`" >> config.mak

2
libavutil/bswap.h
View File

@@ -56,7 +56,7 @@ static av_always_inline uint16_t bswap_16(uint16_t x)
static av_always_inline uint32_t bswap_32(uint32_t x) static av_always_inline uint32_t bswap_32(uint32_t x)
{ {
#if defined(ARCH_X86) #if defined(ARCH_X86)
#if __CPU__ != 386 #ifdef HAVE_BSWAP
__asm("bswap %0": __asm("bswap %0":
"=r" (x) : "=r" (x) :
#else #else