diff options
Diffstat (limited to 'include/gba/macro.h')
| -rw-r--r-- | include/gba/macro.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/gba/macro.h b/include/gba/macro.h index dcad009e1..d39d10738 100644 --- a/include/gba/macro.h +++ b/include/gba/macro.h @@ -167,4 +167,57 @@ #define DmaFill16Defvars(dmaNum, fillval, dest, size) DmaFillDefvars(dmaNum, fillval, dest, size, 16) #define DmaFill32Defvars(dmaNum, fillval, dest, size) DmaFillDefvars(dmaNum, fillval, dest, size, 32) +// from pokeemerald +// Maximum amount of data we will transfer in one operation +#define MAX_DMA_BLOCK_SIZE 0x1000 + +#define MAX_DMA_REQUESTS 128 + +#define DMA_REQUEST_COPY32 1 +#define DMA_REQUEST_FILL32 2 +#define DMA_REQUEST_COPY16 3 +#define DMA_REQUEST_FILL16 4 + +#define Dma3CopyLarge_(src, dest, size, bit) \ +{ \ + const void *_src = src; \ + void *_dest = dest; \ + u32 _size = size; \ + while (1) \ + { \ + if (_size <= MAX_DMA_BLOCK_SIZE) \ + { \ + DmaCopy##bit(3, _src, _dest, _size); \ + break; \ + } \ + DmaCopy##bit(3, _src, _dest, MAX_DMA_BLOCK_SIZE); \ + _src += MAX_DMA_BLOCK_SIZE; \ + _dest += MAX_DMA_BLOCK_SIZE; \ + _size -= MAX_DMA_BLOCK_SIZE; \ + } \ +} + +#define Dma3CopyLarge16_(src, dest, size) Dma3CopyLarge_(src, dest, size, 16) +#define Dma3CopyLarge32_(src, dest, size) Dma3CopyLarge_(src, dest, size, 32) + +#define Dma3FillLarge_(value, dest, size, bit) \ +{ \ + void *_dest = dest; \ + u32 _size = size; \ + while (1) \ + { \ + if (_size <= MAX_DMA_BLOCK_SIZE) \ + { \ + DmaFill##bit(3, value, _dest, _size); \ + break; \ + } \ + DmaFill##bit(3, value, _dest, MAX_DMA_BLOCK_SIZE); \ + _dest += MAX_DMA_BLOCK_SIZE; \ + _size -= MAX_DMA_BLOCK_SIZE; \ + } \ +} + +#define Dma3FillLarge16_(value, dest, size) Dma3FillLarge_(value, dest, size, 16) +#define Dma3FillLarge32_(value, dest, size) Dma3FillLarge_(value, dest, size, 32) + #endif // GUARD_GBA_MACRO_H |