diff options
| author | Karl Kurbjun <kkurbjun@gmail.com> | 2006-04-20 19:39:56 +0000 |
|---|---|---|
| committer | Karl Kurbjun <kkurbjun@gmail.com> | 2006-04-20 19:39:56 +0000 |
| commit | 29ab31e8f1c68dd89dad1e9a92fe3c8a8dd223a9 (patch) | |
| tree | 304b247322f0adefca4c27d1bf7c5a8cfe1a44e8 /apps/plugins/doom/m_fixed.h | |
| parent | 9e9921b08731367ebcaf19976d8e4c6c2534a016 (diff) | |
Optimizations for doom: coldfire asm drawspan routine = not much, fixed point multiply changes = not much, H300 asm lcd update = some, IRAM sound updates and simplifications = more
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9747 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/plugins/doom/m_fixed.h')
| -rw-r--r-- | apps/plugins/doom/m_fixed.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/apps/plugins/doom/m_fixed.h b/apps/plugins/doom/m_fixed.h index 3c922e8f50..e29933befd 100644 --- a/apps/plugins/doom/m_fixed.h +++ b/apps/plugins/doom/m_fixed.h @@ -47,15 +47,15 @@ inline static int FixedMul( int a, int b ) #if defined(CPU_COLDFIRE) && !defined(SIMULATOR) // Code contributed by Thom Johansen register int result; - asm volatile ( + asm ( "mac.l %[x],%[y],%%acc0 \n" /* multiply */ "move.l %[y],%%d2 \n" "mulu.l %[x],%%d2 \n" /* get lower half, avoid emac stall */ "movclr.l %%acc0,%[result] \n" /* get higher half */ - "moveq.l #15,%%d1 \n" - "asl.l %%d1,%[result] \n" /* hi <<= 15, plus one free */ - "moveq.l #16,%%d1 \n" - "lsr.l %%d1,%%d2 \n" /* (unsigned)lo >>= 16 */ + "asl.l #8,%[result] \n" /* hi <<= 15, plus one free */ + "asl.l #7,%[result] \n" /* hi <<= 15, plus one free */ + "lsr.l #8,%%d2 \n" /* (unsigned)lo >>= 16 */ + "lsr.l #8,%%d2 \n" /* (unsigned)lo >>= 16 */ "or.l %%d2 ,%[result] \n" /* combine result */ : /* outputs */ [result]"=&d"(result) @@ -63,7 +63,7 @@ inline static int FixedMul( int a, int b ) [x] "d" (a), [y] "d" (b) : /* clobbers */ - "d1", "d2" + "d2" ); return result; #else |