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pdbox: Reverted premature commit of Coldfire optimization.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26560 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Wincent Balin 2010-06-04 21:32:14 +00:00
parent 3e1847c525
commit 0133a4f052
1 changed files with 0 additions and 17 deletions
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17
apps/plugins/pdbox/PDa/src/m_fixed.h
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@ -31,23 +31,6 @@ typedef int t_sample;
lo; \
})
#define idiv(a,b) ((((long long) (a) )<<fix1)/(long long) (b) )
#elif defined(CPU_COLDFIRE)
#define mult(a,b) mult_cf((a),(b))
static inline t_fixed mult_cf(t_fixed x, t_fixed y)
{
t_fixed t1, t2;
asm volatile (
"mac.l %[x],%[y],%%acc0 \n" /* multiply */
"mulu.l %[y],%[x] \n" /* get low half, avoid emac stall */
"movclr.l %%acc0,%[t1] \n" /* get higher half */
"asl.l %[shl],%[t1] \n" /* hi <<= 13, plus one free */
"lsr.l %[shr],%[x] \n" /* (unsigned)lo >>= 18 */
"or.l %[x],%[t1] \n" /* combine result */
: [t1]"=&d"(t1), [t2]"=&d"(t2), [x]"+d"(x)
: [y]"d"(y), [shl]"d"(31-fix1), [shr]"d"(fix1));
return t1;
}
#define idiv(a,b) ((((long long) (a) )<<fix1)/(long long) (b) )
#else /* CPU_... */
#define mult(a,b) (long long)(((long long) (a) * (long long) (b))>>fix1)
#define idiv(a,b) ((((long long) (a) )<<fix1)/(long long) (b) )