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* fix for -fPIC compilation - compiles with 2.95.2 as well - any

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other compiler shows any problem here ??

Originally committed as revision 563 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Zdenek Kabelac 2002-05-22 20:46:24 +00:00
parent d7d267dfe0
commit a213d66486
1 changed files with 49 additions and 17 deletions
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66
libavcodec/i386/dsputil_mmx_avg.h
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@ -22,7 +22,8 @@
*/
/* XXX: we use explicit registers to avoid a gcc 2.95.2 register asm
clobber bug */
clobber bug - now it will work with 2.95.2 and also with -fPIC
*/
static void DEF(put_pixels_x2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
__asm __volatile(
@ -50,8 +51,8 @@ static void DEF(put_pixels_x2)(UINT8 *block, const UINT8 *pixels, int line_size,
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d" (block), "S" (block+line_size),
"D"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"g"(line_size<<1)
:"%eax", "memory");
}
@ -88,13 +89,43 @@ static void DEF(put_no_rnd_pixels_x2)(UINT8 *block, const UINT8 *pixels, int lin
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d" (block), "S" (block+line_size),
"D"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"r"(line_size<<1)
:"%eax", "memory");
}
static void DEF(put_pixels_y2)(UINT8 *block, const UINT8 *pixels, int line_size, int h)
{
#if 1
// Michael - measure me
__asm __volatile(
"lea (%3, %3), %%eax \n\t"
"movq (%1), %%mm0 \n\t"
"subl %3, %2 \n\t"
".balign 16 \n\t"
"1: \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq (%1, %3, 2), %%mm2 \n\t"
PAVGB" %%mm1, %%mm0 \n\t"
PAVGB" %%mm2, %%mm1 \n\t"
"addl %%eax, %1 \n\t"
"movq %%mm0, (%2, %3) \n\t"
"movq %%mm1, (%2, %3, 2) \n\t"
"movq (%1, %3), %%mm1 \n\t"
"movq (%1, %3, 2), %%mm0 \n\t"
PAVGB" %%mm1, %%mm2 \n\t"
PAVGB" %%mm0, %%mm1 \n\t"
"addl %%eax, %2 \n\t"
"addl %%eax, %1 \n\t"
"movq %%mm2, (%2, %3) \n\t"
"movq %%mm1, (%2, %3, 2) \n\t"
"addl %%eax, %2 \n\t"
"subl $4, %0 \n\t"
"jnz 1b \n\t"
:"+g"(h)
:"D"(pixels), "S" (block), "c"(line_size)
:"%eax", "memory");
#else
__asm __volatile(
"xorl %%eax, %%eax \n\t"
"movq (%1), %%mm0 \n\t"
@ -117,9 +148,10 @@ static void DEF(put_pixels_y2)(UINT8 *block, const UINT8 *pixels, int line_size,
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d"(pixels+line_size*2), "S" (block),
"D" (block+line_size), "g"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
#endif
}
/* GL: this function does incorrect rounding if overflow */
@ -150,8 +182,8 @@ static void DEF(put_no_rnd_pixels_y2)(UINT8 *block, const UINT8 *pixels, int lin
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d"(pixels+line_size*2), "S" (block),
"D" (block+line_size), "g"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
}
@ -182,8 +214,8 @@ static void DEF(avg_pixels)(UINT8 *block, const UINT8 *pixels, int line_size, in
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d" (block), "S" (block+line_size),
"D"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"g"(line_size<<1)
:"%eax", "memory");
}
@ -222,8 +254,8 @@ static void DEF(avg_pixels_x2)(UINT8 *block, const UINT8 *pixels, int line_size,
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d" (block), "S" (block+line_size),
"D"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r" (block), "r" (block+line_size),
"g"(line_size<<1)
:"%eax", "memory");
}
@ -259,8 +291,8 @@ static void DEF(avg_pixels_y2)(UINT8 *block, const UINT8 *pixels, int line_size,
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d"(pixels+line_size*2), "S" (block),
"D" (block+line_size), "g"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
}
@ -309,7 +341,7 @@ static void DEF(avg_pixels_xy2)(UINT8 *block, const UINT8 *pixels, int line_size
"subl $4, %0 \n\t"
" jnz 1b \n\t"
:"+g"(h)
:"b"(pixels), "c"(pixels+line_size), "d"(pixels+line_size*2), "S" (block),
"D" (block+line_size), "g"(line_size<<1)
:"D"(pixels), "S"(pixels+line_size), "r"(pixels+line_size*2), "r" (block),
"r" (block+line_size), "g"(line_size<<1)
:"%eax", "memory");
}