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swscale/x86: do not expect registers to be preserved across inline ASM blocks 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Vitor Sessak 2014-09-17 21:10:16 +02:00 committed by Michael Niedermayer
parent 41d82b85ab
commit 55d11d277b
1 changed files with 44 additions and 39 deletions
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75
libswscale/x86/swscale.c
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@ -205,36 +205,20 @@ static void yuv2yuvX_sse3(const int16_t *filter, int filterSize,
yuv2yuvX_mmxext(filter, filterSize, src, dest, dstW, dither, offset);
return;
}
if (offset) {
__asm__ volatile("movq (%0), %%xmm3\n\t"
"movdqa %%xmm3, %%xmm4\n\t"
"psrlq $24, %%xmm3\n\t"
"psllq $40, %%xmm4\n\t"
"por %%xmm4, %%xmm3\n\t"
:: "r"(dither)
);
} else {
__asm__ volatile("movq (%0), %%xmm3\n\t"
:: "r"(dither)
);
}
filterSize--;
__asm__ volatile(
"pxor %%xmm0, %%xmm0\n\t"
"punpcklbw %%xmm0, %%xmm3\n\t"
"movd %0, %%xmm1\n\t"
"punpcklwd %%xmm1, %%xmm1\n\t"
"punpckldq %%xmm1, %%xmm1\n\t"
"punpcklqdq %%xmm1, %%xmm1\n\t"
"psllw $3, %%xmm1\n\t"
"paddw %%xmm1, %%xmm3\n\t"
"psraw $4, %%xmm3\n\t"
::"m"(filterSize)
);
__asm__ volatile(
"movdqa %%xmm3, %%xmm4\n\t"
"movdqa %%xmm3, %%xmm7\n\t"
"movl %3, %%ecx\n\t"
#define MAIN_FUNCTION \
"pxor %%xmm0, %%xmm0 \n\t" \
"punpcklbw %%xmm0, %%xmm3 \n\t" \
"movd %4, %%xmm1 \n\t" \
"punpcklwd %%xmm1, %%xmm1 \n\t" \
"punpckldq %%xmm1, %%xmm1 \n\t" \
"punpcklqdq %%xmm1, %%xmm1 \n\t" \
"psllw $3, %%xmm1 \n\t" \
"paddw %%xmm1, %%xmm3 \n\t" \
"psraw $4, %%xmm3 \n\t" \
"movdqa %%xmm3, %%xmm4 \n\t" \
"movdqa %%xmm3, %%xmm7 \n\t" \
"movl %3, %%ecx \n\t" \
"mov %0, %%"REG_d" \n\t"\
"mov (%%"REG_d"), %%"REG_S" \n\t"\
".p2align 4 \n\t" /* FIXME Unroll? */\
@ -252,20 +236,41 @@ static void yuv2yuvX_sse3(const int16_t *filter, int filterSize,
" jnz 1b \n\t"\
"psraw $3, %%xmm3 \n\t"\
"psraw $3, %%xmm4 \n\t"\
"packuswb %%xmm4, %%xmm3 \n\t"
"movntdq %%xmm3, (%1, %%"REG_c")\n\t"
"packuswb %%xmm4, %%xmm3 \n\t"\
"movntdq %%xmm3, (%1, %%"REG_c")\n\t"\
"add $16, %%"REG_c" \n\t"\
"cmp %2, %%"REG_c" \n\t"\
"movdqa %%xmm7, %%xmm3\n\t"
"movdqa %%xmm7, %%xmm4\n\t"
"movdqa %%xmm7, %%xmm3 \n\t" \
"movdqa %%xmm7, %%xmm4 \n\t" \
"mov %0, %%"REG_d" \n\t"\
"mov (%%"REG_d"), %%"REG_S" \n\t"\
"jb 1b \n\t"\
"jb 1b \n\t"
if (offset) {
__asm__ volatile(
"movq %5, %%xmm3 \n\t"
"movdqa %%xmm3, %%xmm4 \n\t"
"psrlq $24, %%xmm3 \n\t"
"psllq $40, %%xmm4 \n\t"
"por %%xmm4, %%xmm3 \n\t"
MAIN_FUNCTION
:: "g" (filter),
"r" (dest-offset), "g" ((x86_reg)(dstW+offset)), "m" (offset)
"r" (dest-offset), "g" ((x86_reg)(dstW+offset)), "m" (offset),
"m"(filterSize), "m"(((uint64_t *) dither)[0])
: XMM_CLOBBERS("%xmm0" , "%xmm1" , "%xmm2" , "%xmm3" , "%xmm4" , "%xmm5" , "%xmm7" ,)
"%"REG_d, "%"REG_S, "%"REG_c
);
} else {
__asm__ volatile(
"movq %5, %%xmm3 \n\t"
MAIN_FUNCTION
:: "g" (filter),
"r" (dest-offset), "g" ((x86_reg)(dstW+offset)), "m" (offset),
"m"(filterSize), "m"(((uint64_t *) dither)[0])
: XMM_CLOBBERS("%xmm0" , "%xmm1" , "%xmm2" , "%xmm3" , "%xmm4" , "%xmm5" , "%xmm7" ,)
"%"REG_d, "%"REG_S, "%"REG_c
);
}
}
#endif