Merged r5070:5071 from branches/SDL-1.2: forcibly disable buggy MMX mixers.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404379

src/audio/SDL_mixer.c

@@ -122,6 +122,7 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
 
     case AUDIO_S8:
         {
+#if defined(SDL_BUGGY_MMX_MIXERS) /* buggy, so we're disabling them. --ryan. */
 #if defined(__GNUC__) && defined(__i386__) && defined(SDL_ASSEMBLY_ROUTINES)
             if (SDL_HasMMX()) {
                 SDL_MixAudio_MMX_S8((char *) dst, (char *) src,
@@ -133,6 +134,7 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
                                        (unsigned int) len, (int) volume);
             } else
 #endif
+#endif
 #if defined(__GNUC__) && defined(__M68000__) && defined(SDL_ASSEMBLY_ROUTINES)
                 SDL_MixAudio_m68k_S8((char *) dst, (char *) src,
                                      (unsigned long) len, (long) volume);
@@ -167,6 +169,7 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
 
     case AUDIO_S16LSB:
         {
+#if defined(SDL_BUGGY_MMX_MIXERS) /* buggy, so we're disabling them. --ryan. */
 #if defined(__GNUC__) && defined(__i386__) && defined(SDL_ASSEMBLY_ROUTINES)
             if (SDL_HasMMX()) {
                 SDL_MixAudio_MMX_S16((char *) dst, (char *) src,
@@ -178,6 +181,7 @@ SDL_MixAudioFormat(Uint8 * dst, const Uint8 * src, SDL_AudioFormat format,
                                         (unsigned int) len, (int) volume);
             } else
 #endif
+#endif
 #if defined(__GNUC__) && defined(__M68000__) && defined(SDL_ASSEMBLY_ROUTINES)
                 SDL_MixAudio_m68k_S16LSB((short *) dst, (short *) src,
                                          (unsigned long) len, (long) volume);

src/audio/SDL_mixer_MMX.c

@@ -35,6 +35,7 @@
 *   Mixing for 16 bit signed buffers
 ***********************************************/
 
+#if defined(SDL_BUGGY_MMX_MIXERS) /* buggy, so we're disabling them. --ryan. */
 #if defined(__GNUC__) && defined(__i386__) && defined(SDL_ASSEMBLY_ROUTINES)
 void
 SDL_MixAudio_MMX_S16(char *dst, char *src, unsigned int size, int volume)
@@ -117,4 +118,7 @@ SDL_MixAudio_MMX_S8(char *dst, char *src, unsigned int size, int volume)
                          "m"(volume):"eax", "edx", "memory");
 }
 #endif
+
+#endif /* SDL_BUGGY_MMX_MIXERS */
+
 /* vi: set ts=4 sw=4 expandtab: */

src/audio/SDL_mixer_MMX.h

@@ -8,8 +8,10 @@
 */
 #include "SDL_config.h"
 
+#if defined(SDL_BUGGY_MMX_MIXERS) /* buggy, so we're disabling them. --ryan. */
 #if defined(__GNUC__) && defined(__i386__) && defined(SDL_ASSEMBLY_ROUTINES)
 void SDL_MixAudio_MMX_S16(char *, char *, unsigned int, int);
 void SDL_MixAudio_MMX_S8(char *, char *, unsigned int, int);
 #endif
+#endif /* SDL_BUGGY_MMX_MIXERS */
 /* vi: set ts=4 sw=4 expandtab: */

src/audio/SDL_mixer_MMX_VC.c

@@ -23,6 +23,7 @@
 
 #include "SDL_mixer_MMX_VC.h"
 
+#if defined(SDL_BUGGY_MMX_MIXERS) /* buggy, so we're disabling them. --ryan. */
 #if ((defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)) && defined(SDL_ASSEMBLY_ROUTINES)
 // MMX assembler version of SDL_MixAudio for signed little endian 16 bit samples and signed 8 bit samples
 // Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
@@ -184,5 +185,6 @@ endS8:
 }
 
 #endif /* SDL_ASSEMBLY_ROUTINES */
+#endif /* SDL_BUGGY_MMX_MIXERS */
 
 /* vi: set ts=4 sw=4 expandtab: */

src/audio/SDL_mixer_MMX_VC.h

@@ -21,7 +21,7 @@
 */
 #include "SDL_config.h"
 
-
+#if defined(SDL_BUGGY_MMX_MIXERS) /* buggy, so we're disabling them. --ryan. */
 #if ((defined(_MSC_VER) && defined(_M_IX86)) || defined(__WATCOMC__)) && defined(SDL_ASSEMBLY_ROUTINES)
 /* headers for MMX assembler version of SDL_MixAudio
    Copyright 2002 Stephane Marchesin (stephane.marchesin@wanadoo.fr)
@@ -34,4 +34,6 @@
 void SDL_MixAudio_MMX_S16_VC(char *, char *, unsigned int, int);
 void SDL_MixAudio_MMX_S8_VC(char *, char *, unsigned int, int);
 #endif
+#endif /* SDL_BUGGY_MMX_MIXERS */
+
 /* vi: set ts=4 sw=4 expandtab: */