Mercurial > sdl-ios-xcode
diff src/audio/SDL_mixer_m68k.c @ 1668:4da1ee79c9af SDL-1.3
more tweaking indent options
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 29 May 2006 04:04:35 +0000 |
| parents | 782fd950bd46 |
| children |
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--- a/src/audio/SDL_mixer_m68k.c Mon May 29 03:53:21 2006 +0000 +++ b/src/audio/SDL_mixer_m68k.c Mon May 29 04:04:35 2006 +0000 @@ -29,112 +29,112 @@ #if defined(__M68000__) && defined(__GNUC__) void -SDL_MixAudio_m68k_U8 (char *dst, char *src, long len, long volume, char *mix8) +SDL_MixAudio_m68k_U8(char *dst, char *src, long len, long volume, char *mix8) { - __asm__ __volatile__ ("tstl %2\n" " beqs stoploop_u8\n" "mixloop_u8:\n" - /* Mix a sample */ - " moveq #0,%%d0\n" " moveq #0,%%d1\n" " moveb %1@+,%%d0\n" /* d0 = *src++ */ - " sub #128,%%d0\n" /* d0 -= 128 */ - " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ - " moveb %0@,%%d1\n" /* d1 = *dst */ - " asr #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ - " add #128,%%d0\n" /* d0 += 128 */ - " add %%d1,%%d0\n" - " moveb %4@(%%d0:w),%0@+\n" - /* Loop till done */ - " subql #1,%2\n" " bhis mixloop_u8\n" "stoploop_u8:\n": /* no return value */ - : /* input */ - "a" (dst), "a" (src), "d" (len), "d" (volume), "a" (mix8): /* clobbered registers */ - "d0", "d1", "cc", "memory"); + __asm__ __volatile__("tstl %2\n" " beqs stoploop_u8\n" "mixloop_u8:\n" + /* Mix a sample */ + " moveq #0,%%d0\n" " moveq #0,%%d1\n" " moveb %1@+,%%d0\n" /* d0 = *src++ */ + " sub #128,%%d0\n" /* d0 -= 128 */ + " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ + " moveb %0@,%%d1\n" /* d1 = *dst */ + " asr #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ + " add #128,%%d0\n" /* d0 += 128 */ + " add %%d1,%%d0\n" + " moveb %4@(%%d0:w),%0@+\n" + /* Loop till done */ + " subql #1,%2\n" " bhis mixloop_u8\n" "stoploop_u8:\n": /* no return value */ + : /* input */ + "a"(dst), "a"(src), "d"(len), "d"(volume), "a"(mix8): /* clobbered registers */ + "d0", "d1", "cc", "memory"); } void -SDL_MixAudio_m68k_S8 (char *dst, char *src, long len, long volume) +SDL_MixAudio_m68k_S8(char *dst, char *src, long len, long volume) { - __asm__ __volatile__ ("tstl %2\n" - " beqs stoploop_s8\n" - " moveq #-128,%%d2\n" - " moveq #127,%%d3\n" "mixloop_s8:\n" - /* Mix a sample */ - " moveq #0,%%d0\n" " moveq #0,%%d1\n" " moveb %1@+,%%d0\n" /* d0 = *src++ */ - " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ - " moveb %0@,%%d1\n" /* d1 = *dst */ - " asr #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ - " add %%d1,%%d0\n" - " cmp %%d2,%%d0\n" - " bges lower_limit_s8\n" - " move %%d2,%%d0\n" - "lower_limit_s8:\n" - " cmp %%d3,%%d0\n" - " bles upper_limit_s8\n" - " move %%d3,%%d0\n" - "upper_limit_s8:\n" " moveb %%d0,%0@+\n" - /* Loop till done */ - " subql #1,%2\n" " bhis mixloop_s8\n" "stoploop_s8:\n": /* no return value */ - : /* input */ - "a" (dst), "a" (src), "d" (len), "d" (volume): /* clobbered registers */ - "d0", "d1", "d2", "d3", "cc", "memory"); + __asm__ __volatile__("tstl %2\n" + " beqs stoploop_s8\n" + " moveq #-128,%%d2\n" + " moveq #127,%%d3\n" "mixloop_s8:\n" + /* Mix a sample */ + " moveq #0,%%d0\n" " moveq #0,%%d1\n" " moveb %1@+,%%d0\n" /* d0 = *src++ */ + " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ + " moveb %0@,%%d1\n" /* d1 = *dst */ + " asr #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ + " add %%d1,%%d0\n" + " cmp %%d2,%%d0\n" + " bges lower_limit_s8\n" + " move %%d2,%%d0\n" + "lower_limit_s8:\n" + " cmp %%d3,%%d0\n" + " bles upper_limit_s8\n" + " move %%d3,%%d0\n" + "upper_limit_s8:\n" " moveb %%d0,%0@+\n" + /* Loop till done */ + " subql #1,%2\n" " bhis mixloop_s8\n" "stoploop_s8:\n": /* no return value */ + : /* input */ + "a"(dst), "a"(src), "d"(len), "d"(volume): /* clobbered registers */ + "d0", "d1", "d2", "d3", "cc", "memory"); } void -SDL_MixAudio_m68k_S16MSB (short *dst, short *src, long len, long volume) +SDL_MixAudio_m68k_S16MSB(short *dst, short *src, long len, long volume) { - __asm__ __volatile__ ("tstl %2\n" - " beqs stoploop_s16msb\n" - " movel #-32768,%%d2\n" - " movel #32767,%%d3\n" - " lsrl #1,%2\n" "mixloop_s16msb:\n" - /* Mix a sample */ - " move %1@+,%%d0\n" /* d0 = *src++ */ - " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ - " move %0@,%%d1\n" /* d1 = *dst */ - " extl %%d1\n" /* extend d1 to 32 bits */ - " asrl #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ - " addl %%d1,%%d0\n" - " cmpl %%d2,%%d0\n" - " bges lower_limit_s16msb\n" - " move %%d2,%%d0\n" - "lower_limit_s16msb:\n" - " cmpl %%d3,%%d0\n" - " bles upper_limit_s16msb\n" - " move %%d3,%%d0\n" - "upper_limit_s16msb:\n" " move %%d0,%0@+\n" - /* Loop till done */ - " subql #1,%2\n" " bhis mixloop_s16msb\n" "stoploop_s16msb:\n": /* no return value */ - : /* input */ - "a" (dst), "a" (src), "d" (len), "d" (volume): /* clobbered registers */ - "d0", "d1", "d2", "d3", "cc", "memory"); + __asm__ __volatile__("tstl %2\n" + " beqs stoploop_s16msb\n" + " movel #-32768,%%d2\n" + " movel #32767,%%d3\n" + " lsrl #1,%2\n" "mixloop_s16msb:\n" + /* Mix a sample */ + " move %1@+,%%d0\n" /* d0 = *src++ */ + " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ + " move %0@,%%d1\n" /* d1 = *dst */ + " extl %%d1\n" /* extend d1 to 32 bits */ + " asrl #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ + " addl %%d1,%%d0\n" + " cmpl %%d2,%%d0\n" + " bges lower_limit_s16msb\n" + " move %%d2,%%d0\n" + "lower_limit_s16msb:\n" + " cmpl %%d3,%%d0\n" + " bles upper_limit_s16msb\n" + " move %%d3,%%d0\n" + "upper_limit_s16msb:\n" " move %%d0,%0@+\n" + /* Loop till done */ + " subql #1,%2\n" " bhis mixloop_s16msb\n" "stoploop_s16msb:\n": /* no return value */ + : /* input */ + "a"(dst), "a"(src), "d"(len), "d"(volume): /* clobbered registers */ + "d0", "d1", "d2", "d3", "cc", "memory"); } void -SDL_MixAudio_m68k_S16LSB (short *dst, short *src, long len, long volume) +SDL_MixAudio_m68k_S16LSB(short *dst, short *src, long len, long volume) { - __asm__ __volatile__ ("tstl %2\n" - " beqs stoploop_s16lsb\n" - " movel #-32768,%%d2\n" - " movel #32767,%%d3\n" - " lsrl #1,%2\n" "mixloop_s16lsb:\n" - /* Mix a sample */ - " move %1@+,%%d0\n" /* d0 = *src++ */ - " rorw #8,%%d0\n" " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ - " move %0@,%%d1\n" /* d1 = *dst */ - " rorw #8,%%d1\n" " extl %%d1\n" /* extend d1 to 32 bits */ - " asrl #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ - " addl %%d1,%%d0\n" - " cmpl %%d2,%%d0\n" - " bges lower_limit_s16lsb\n" - " move %%d2,%%d0\n" - "lower_limit_s16lsb:\n" - " cmpl %%d3,%%d0\n" - " bles upper_limit_s16lsb\n" - " move %%d3,%%d0\n" - "upper_limit_s16lsb:\n" - " rorw #8,%%d0\n" " move %%d0,%0@+\n" - /* Loop till done */ - " subql #1,%2\n" " bhis mixloop_s16lsb\n" "stoploop_s16lsb:\n": /* no return value */ - : /* input */ - "a" (dst), "a" (src), "d" (len), "d" (volume): /* clobbered registers */ - "d0", "d1", "d2", "d3", "cc", "memory"); + __asm__ __volatile__("tstl %2\n" + " beqs stoploop_s16lsb\n" + " movel #-32768,%%d2\n" + " movel #32767,%%d3\n" + " lsrl #1,%2\n" "mixloop_s16lsb:\n" + /* Mix a sample */ + " move %1@+,%%d0\n" /* d0 = *src++ */ + " rorw #8,%%d0\n" " muls %3,%%d0\n" /* d0 *= volume (0<=volume<=128) */ + " move %0@,%%d1\n" /* d1 = *dst */ + " rorw #8,%%d1\n" " extl %%d1\n" /* extend d1 to 32 bits */ + " asrl #7,%%d0\n" /* d0 /= 128 (SDL_MIX_MAXVOLUME) */ + " addl %%d1,%%d0\n" + " cmpl %%d2,%%d0\n" + " bges lower_limit_s16lsb\n" + " move %%d2,%%d0\n" + "lower_limit_s16lsb:\n" + " cmpl %%d3,%%d0\n" + " bles upper_limit_s16lsb\n" + " move %%d3,%%d0\n" + "upper_limit_s16lsb:\n" + " rorw #8,%%d0\n" " move %%d0,%0@+\n" + /* Loop till done */ + " subql #1,%2\n" " bhis mixloop_s16lsb\n" "stoploop_s16lsb:\n": /* no return value */ + : /* input */ + "a"(dst), "a"(src), "d"(len), "d"(volume): /* clobbered registers */ + "d0", "d1", "d2", "d3", "cc", "memory"); } #endif /* vi: set ts=4 sw=4 expandtab: */