Thom Johansen's first EMAC optimisation for the Coldfire - about a 3%-4% speedup

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6024 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 46 insertions, 0 deletions

diff --git a/apps/codecs/libFLAC/include/private/coldfire.h b/apps/codecs/libFLAC/include/private/coldfire.h
new file mode 100644
index 0000000000..22f1711f2c
--- /dev/null
+++ b/apps/codecs/libFLAC/include/private/coldfire.h
@@ -0,0 +1,46 @@
+#ifndef SIMULATOR
+#ifndef _FLAC_COLDFIRE_H
+#define _FLAC_COLDFIRE_H
+
+#include <FLAC/ordinals.h>
+
+#define MACL(x, y, acc) \
+        asm volatile ("mac.l %0, %1, %%" #acc \
+                      : : "ad" ((x)), "ad" ((y)));
+
+#define MACL_SHIFT(x, y, shift, acc) \
+        asm volatile ("mac.l %0, %1, #" #shift ", %%" #acc \
+                      : : "ad" ((x)), "ad" ((y)));
+
+#define MSACL(x, y, acc) \
+        asm volatile ("msac.l %0, %1, %%" #acc \
+            : : "ad" ((x)), "ad" ((y)));
+
+#define MSACL_SHIFT(x, y, shift, acc) \
+        asm volatile ("msac.l %0, %1, #" #shift ", %%" #acc \
+                      : : "ad" ((x)), "ad" ((y)));
+
+#define SET_MACSR(x) \
+        asm volatile ("mov.l %0, %%macsr" : : "adi" ((x)));
+
+#define TRANSFER_ACC(acca, accb) \
+        asm volatile ("mov.l %" #acca ", %" #accb);
+
+#define SET_ACC(x, acc) \
+        asm volatile ("mov.l %0, %%" #acc : : "adi" ((x)));
+
+#define GET_ACC(x, acc) \
+        asm volatile ("mov.l %%" #acc ", %0\n\t" : "=ad" ((x)));
+
+#define GET_ACC_CLR(x, acc) \
+        asm volatile ("movclr.l %%" #acc ", %0\n\t" : "=ad" ((x)));
+
+#define EMAC_SATURATE   0x00000080
+#define EMAC_FRACTIONAL 0x00000020
+#define EMAC_ROUND      0x00000010
+
+
+void FLAC__lpc_restore_signal_order8_mac(const FLAC__int32 residual[], unsigned data_len, const FLAC__int32 qlp_coeff[], unsigned order, int lp_quantization, FLAC__int32 data[]);
+
+#endif
+#endif