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| author | Magnus Holmgren <magnushol@gmail.com> | 2005-09-28 17:36:42 +0000 |
|---|---|---|
| committer | Magnus Holmgren <magnushol@gmail.com> | 2005-09-28 17:36:42 +0000 |
| commit | 58384f03fb0c46eb642d7a8af9c32c0ecd91ad25 (patch) | |
| tree | 3cf7135688c29d2a7d295c9941dd097656bb94a1 /apps/codecs | |
| parent | 9d256dc4b0175af15ac693fe80ca145b89329d8a (diff) | |
| download | rockbox-58384f03fb0c46eb642d7a8af9c32c0ecd91ad25.zip rockbox-58384f03fb0c46eb642d7a8af9c32c0ecd91ad25.tar.gz rockbox-58384f03fb0c46eb642d7a8af9c32c0ecd91ad25.tar.bz2 rockbox-58384f03fb0c46eb642d7a8af9c32c0ecd91ad25.tar.xz | |
iRiver: Make it possible to build Rockbox using GCC 4.0.1.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7569 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/codecs')
| -rw-r--r-- | apps/codecs/libmad/synth.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/apps/codecs/libmad/synth.c b/apps/codecs/libmad/synth.c index 4315e23..1b13312 100644 --- a/apps/codecs/libmad/synth.c +++ b/apps/codecs/libmad/synth.c @@ -643,6 +643,40 @@ void synth_full(struct mad_synth *synth, struct mad_frame const *frame, ++Dptr; /* D[32 - sb][i] == -D[sb][31 - i] */ +#if __GNUC__ >= 4 + /* GCC 4.0.1 can't find a suitable register here if all of d0-d7 + * are clobbered, so use fewer registers. It does mean two extra + * movem instructions, but should have no additional performance + * impact (like not being able to use burst mode for the movem). + */ + asm volatile ( + "movem.l (%1), %%d0-%%d3\n\t" + "move.l (%2), %%a5\n\t" + "msac.l %%d0, %%a5, 56(%2), %%a5, %%acc0\n\t" + "msac.l %%d1, %%a5, 48(%2), %%a5, %%acc0\n\t" + "msac.l %%d2, %%a5, 40(%2), %%a5, %%acc0\n\t" + "msac.l %%d3, %%a5, 32(%2), %%a5, %%acc0\n\t" + "movem.l 16(%1), %%d0-%%d3\n\t" + "msac.l %%d0, %%a5, 24(%2), %%a5, %%acc0\n\t" + "msac.l %%d1, %%a5, 16(%2), %%a5, %%acc0\n\t" + "msac.l %%d2, %%a5, 8(%2), %%a5, %%acc0\n\t" + "msac.l %%d3, %%a5, 8(%4), %%a5, %%acc0\n\t" + + "movem.l 16(%3), %%d0-%%d3\n\t" + "mac.l %%d3, %%a5, 16(%4), %%a5, %%acc0\n\t" + "mac.l %%d2, %%a5, 24(%4), %%a5, %%acc0\n\t" + "mac.l %%d1, %%a5, 32(%4), %%a5, %%acc0\n\t" + "mac.l %%d0, %%a5, 40(%4), %%a5, %%acc0\n\t" + "movem.l (%3), %%d0-%%d3\n\t" + "mac.l %%d3, %%a5, 48(%4), %%a5, %%acc0\n\t" + "mac.l %%d2, %%a5, 56(%4), %%a5, %%acc0\n\t" + "mac.l %%d1, %%a5, (%4), %%a5, %%acc0\n\t" + "mac.l %%d0, %%a5, %%acc0\n\t" + "movclr.l %%acc0, %0\n\t" + : "=r" (hi) + : "a" (*fo), "a" (*Dptr + po), "a" (*fe), "a" (*Dptr + pe) + : "d0", "d1", "d2", "d3", "a5"); +#else asm volatile ( "movem.l (%1), %%d0-%%d7\n\t" "move.l (%2), %%a5\n\t" @@ -668,7 +702,7 @@ void synth_full(struct mad_synth *synth, struct mad_frame const *frame, : "=r" (hi) : "a" (*fo), "a" (*Dptr + po), "a" (*fe), "a" (*Dptr + pe) : "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", "a5"); - +#endif *pcm1++ = hi << 3; asm volatile( |