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$NetBSD: patch-at,v 1.1 2004/07/09 18:19:09 drochner Exp $
--- src/audio/SDL_mixer_MMX.c.orig 2002-11-08 23:13:28.000000000 -0700
+++ src/audio/SDL_mixer_MMX.c
@@ -15,13 +15,11 @@ void SDL_MixAudio_MMX_S16(char* dst,char
{
__asm__ __volatile__ (
-" movl %0,%%edi\n" // edi = dst
-" movl %1,%%esi\n" // esi = src
" movl %3,%%eax\n" // eax = volume
-" movl %2,%%ebx\n" // ebx = size
+" movl %2,%%edx\n" // edx = size
-" shrl $4,%%ebx\n" // process 16 bytes per iteration = 8 samples
+" shrl $4,%%edx\n" // process 16 bytes per iteration = 8 samples
" jz .endS16\n"
@@ -39,14 +37,14 @@ void SDL_MixAudio_MMX_S16(char* dst,char
".align 16\n"
" .mixloopS16:\n"
-" movq (%%esi),%%mm1\n" // mm1 = a|b|c|d
+" movq (%1),%%mm1\n" // mm1 = a|b|c|d
" movq %%mm1,%%mm2\n" // mm2 = a|b|c|d
-" movq 8(%%esi),%%mm4\n" // mm4 = e|f|g|h
+" movq 8(%1),%%mm4\n" // mm4 = e|f|g|h
// pré charger le buffer dst dans mm7
-" movq (%%edi),%%mm7\n" // mm7 = dst[0]"
+" movq (%0),%%mm7\n" // mm7 = dst[0]"
// multiplier par le volume
" pmullw %%mm0,%%mm1\n" // mm1 = l(a*v)|l(b*v)|l(c*v)|l(d*v)
@@ -69,11 +67,11 @@ void SDL_MixAudio_MMX_S16(char* dst,char
" punpcklwd %%mm5,%%mm6\n" // mm6 = g*v|h*v
// pré charger le buffer dst dans mm5
-" movq 8(%%edi),%%mm5\n" // mm5 = dst[1]
+" movq 8(%0),%%mm5\n" // mm5 = dst[1]
// diviser par 128
" psrad $7,%%mm1\n" // mm1 = a*v/128|b*v/128 , 128 = SDL_MIX_MAXVOLUME
-" addl $16,%%esi\n"
+" add $16,%1\n"
" psrad $7,%%mm3\n" // mm3 = c*v/128|d*v/128
@@ -87,15 +85,15 @@ void SDL_MixAudio_MMX_S16(char* dst,char
// mm4 = le sample avec le volume modifié
" packssdw %%mm4,%%mm6\n" // mm6 = s(e*v|f*v|g*v|h*v)
-" movq %%mm3,(%%edi)\n"
+" movq %%mm3,(%0)\n"
" paddsw %%mm5,%%mm6\n" // mm6 = adjust_volume(src)+dst
-" movq %%mm6,8(%%edi)\n"
+" movq %%mm6,8(%0)\n"
-" addl $16,%%edi\n"
+" add $16,%0\n"
-" dec %%ebx\n"
+" dec %%edx\n"
" jnz .mixloopS16\n"
@@ -103,9 +101,9 @@ void SDL_MixAudio_MMX_S16(char* dst,char
".endS16:\n"
:
- : "m" (dst), "m"(src),"m"(size),
+ : "r" (dst), "r"(src),"m"(size),
"m"(volume)
- : "eax","ebx", "esi", "edi","memory"
+ : "eax","edx","memory"
);
}
@@ -119,11 +117,9 @@ void SDL_MixAudio_MMX_S8(char* dst,char*
{
__asm__ __volatile__ (
-" movl %0,%%edi\n" // edi = dst
-" movl %1,%%esi\n" // esi = src
" movl %3,%%eax\n" // eax = volume
-" movd %%ebx,%%mm0\n"
+" movd %%edx,%%mm0\n"
" movq %%mm0,%%mm1\n"
" psllq $16,%%mm0\n"
" por %%mm1,%%mm0\n"
@@ -132,17 +128,17 @@ void SDL_MixAudio_MMX_S8(char* dst,char*
" psllq $16,%%mm0\n"
" por %%mm1,%%mm0\n"
-" movl %2,%%ebx\n" // ebx = size
-" shr $3,%%ebx\n" // process 8 bytes per iteration = 8 samples
+" movl %2,%%edx\n" // edx = size
+" shr $3,%%edx\n" // process 8 bytes per iteration = 8 samples
-" cmp $0,%%ebx\n"
+" cmp $0,%%edx\n"
" je .endS8\n"
".align 16\n"
" .mixloopS8:\n"
" pxor %%mm2,%%mm2\n" // mm2 = 0
-" movq (%%esi),%%mm1\n" // mm1 = a|b|c|d|e|f|g|h
+" movq (%1),%%mm1\n" // mm1 = a|b|c|d|e|f|g|h
" movq %%mm1,%%mm3\n" // mm3 = a|b|c|d|e|f|g|h
@@ -152,10 +148,10 @@ void SDL_MixAudio_MMX_S8(char* dst,char*
" punpckhbw %%mm2,%%mm1\n" // mm1 = 0|a|0|b|0|c|0|d
" punpcklbw %%mm2,%%mm3\n" // mm3 = 0|e|0|f|0|g|0|h
-" movq (%%edi),%%mm2\n" // mm2 = destination
+" movq (%0),%%mm2\n" // mm2 = destination
" pmullw %%mm0,%%mm1\n" // mm1 = v*a|v*b|v*c|v*d
-" addl $8,%%esi\n"
+" add $8,%1\n"
" pmullw %%mm0,%%mm3\n" // mm3 = v*e|v*f|v*g|v*h
" psraw $7,%%mm1\n" // mm1 = v*a/128|v*b/128|v*c/128|v*d/128
@@ -166,19 +162,19 @@ void SDL_MixAudio_MMX_S8(char* dst,char*
" paddsb %%mm2,%%mm3\n" // add to destination buffer
-" movq %%mm3,(%%edi)\n" // store back to ram
-" addl $8,%%edi\n"
+" movq %%mm3,(%0)\n" // store back to ram
+" add $8,%0\n"
-" dec %%ebx\n"
+" dec %%edx\n"
" jnz .mixloopS8\n"
".endS8:\n"
" emms\n"
:
- : "m" (dst), "m"(src),"m"(size),
+ : "r" (dst), "r"(src),"m"(size),
"m"(volume)
- : "eax","ebx", "esi", "edi","memory"
+ : "eax","edx","memory"
);
}
#endif
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