From 66427c3e476d9cbd93375499abaf818ee73df581 Mon Sep 17 00:00:00 2001
From: Thom Johansen <thomj@rockbox.org>
Date: Tue, 8 Apr 2008 20:02:56 +0000
Subject: [PATCH] Remove ACC_INIT, ACC and GET_ACC macros. These were quite
 Coldfire-centric macros which really aren't needed since all performance
 sensitive target DSP code should be assembler anyway.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17037 a1c6a512-1295-4272-9138-f99709370657
---
 apps/dsp.c | 16 ++++++++--------
 apps/dsp.h | 23 -----------------------
 2 files changed, 8 insertions(+), 31 deletions(-)

diff --git a/apps/dsp.c b/apps/dsp.c
index a259ea4aae..faa08ed202 100644
--- a/apps/dsp.c
+++ b/apps/dsp.c
@@ -714,19 +714,19 @@ static void apply_crossfeed(int count, int32_t *buf[])
         right = buf[1][i];
 
         /* Filter delayed sample from left speaker */
-        ACC_INIT(acc, *di, coefs[0]);
-        ACC(acc, hist_l[0], coefs[1]);
-        ACC(acc, hist_l[1], coefs[2]);
+        acc = FRACMUL(*di, coefs[0]);
+        acc += FRACMUL(hist_l[0], coefs[1]);
+        acc += FRACMUL(hist_l[1], coefs[2]);
         /* Save filter history for left speaker */
-        hist_l[1] = GET_ACC(acc);
+        hist_l[1] = acc;
         hist_l[0] = *di;
         *di++ = left;
         /* Filter delayed sample from right speaker */
-        ACC_INIT(acc, *di, coefs[0]);
-        ACC(acc, hist_r[0], coefs[1]);
-        ACC(acc, hist_r[1], coefs[2]);
+        acc = FRACMUL(*di, coefs[0]);
+        acc += FRACMUL(hist_r[0], coefs[1]);
+        acc += FRACMUL(hist_r[1], coefs[2]);
         /* Save filter history for right speaker */
-        hist_r[1] = GET_ACC(acc);
+        hist_r[1] = acc;
         hist_r[0] = *di;
         *di++ = right;
         /* Now add the attenuated direct sound and write to outputs */
diff --git a/apps/dsp.h b/apps/dsp.h
index 799d023aee..21807b9578 100644
--- a/apps/dsp.h
+++ b/apps/dsp.h
@@ -121,22 +121,6 @@ enum {
                   : [b] "r" (y)); \
 }
 
-#define ACC(acc, x, y) \
-    (void)acc; \
-    asm ("mac.l %[a], %[b], %%acc0" \
-         : : [a] "i,r" (x), [b] "i,r" (y));
-
-#define GET_ACC(acc) \
-({ \
-    long t; \
-    (void)acc; \
-    asm ("movclr.l %%acc0, %[t]" \
-         : [t] "=r" (t)); \
-    t; \
-})
-
-#define ACC_INIT(acc, x, y) ACC(acc, x, y)
-
 #elif defined(CPU_ARM)
 
 /* Multiply two S.31 fractional integers and return the sign bit and the
@@ -168,10 +152,6 @@ enum {
     t; \
 })
 
-#define ACC_INIT(acc, x, y) acc = FRACMUL(x, y)
-#define ACC(acc, x, y) acc += FRACMUL(x, y)
-#define GET_ACC(acc) acc
-
 /* Multiply one S.31-bit and one S8.23 fractional integer and store the
  * sign bit and the 31 most significant bits of the result to d (and
  * increase d). Load next value to multiply with into x from s (and
@@ -190,9 +170,6 @@ enum {
 
 #else
 
-#define ACC_INIT(acc, x, y) acc = FRACMUL(x, y)
-#define ACC(acc, x, y) acc += FRACMUL(x, y)
-#define GET_ACC(acc) acc
 #define FRACMUL(x, y) (long) (((((long long) (x)) * ((long long) (y))) >> 31))
 #define FRACMUL_SHL(x, y, z) \
 ((long)(((((long long) (x)) * ((long long) (y))) >> (31 - (z)))))