1 files changed, 11 insertions, 0 deletions

diff --git a/src/common.h b/src/common.h
index 0d6c89f..bbe6b52 100644
--- a/src/common.h
+++ b/src/common.h
@@ -419,12 +419,16 @@ dma_transfer_fill(void *dst, volatile u32 src, u32 count, int channel, u32 optio
 inline void
 dma_copy(void *dst, const void *src, u32 size, int channel) {
     dma_transfer_copy(dst, src, size / 4, channel, DMA_CHUNK_32 | DMA_ENABLE);
+    // Stall for 2 cycles in case we call this function more than once.
+    asm("nop"); asm("nop");
 }
 
 // Fill the dst location with the word set at src.
 inline void
 dma_fill(void *dst, vu32 src, u32 size, int channel) {
     dma_transfer_fill(dst, src, size / 4, channel, DMA_CHUNK_32 | DMA_ENABLE);
+    // Stall for 2 cycles in case we call this function more than once.
+    asm("nop"); asm("nop");
 }
 
 //
@@ -731,6 +735,7 @@ wait_vsync(void) {
 #define LEN(ARR) (sizeof(ARR) / sizeof((ARR)[0]))
 
 // Fixed-point arithmetic for (i.P) numbers.
+#define FP_NUM(A,P)        ((A) << (P))
 #define FP_MUL(A,B,P)      (((A) * (B)) >> (P))
 #define FP_DIV(A,B,P)      (((A) << (P)) / (B))
 #define FP_LERP(Y0,Y1,X,P) ((Y0) + FP_MUL((X), ((Y1) - (Y0)), P))
@@ -745,4 +750,10 @@ wait_vsync(void) {
 #define EWRAM_CODE __attribute__((section(".ewram"), long_call))
 #define EWRAM_BSS __attribute__((section(".sbss")))
 
+//
+// Compiler hints.
+//
+
+#define UNROLL_LOOPS __attribute__((optimize("unroll-loops")))
+
 #endif // GBAEXP_COMMON_H