diff options
Diffstat (limited to 'backends/platform/psp/memory.h')
| -rw-r--r-- | backends/platform/psp/memory.h | 62 |
1 files changed, 57 insertions, 5 deletions
diff --git a/backends/platform/psp/memory.h b/backends/platform/psp/memory.h index a198095090..c9b3d21cb6 100644 --- a/backends/platform/psp/memory.h +++ b/backends/platform/psp/memory.h @@ -27,17 +27,69 @@ #ifndef PSP_MEMORY_H #define PSP_MEMORY_H +#include "backends/platform/psp/psppixelformat.h" +#include "common/list.h" + #define UNCACHED(x) ((byte *)(((uint32)(x)) | 0x40000000)) /* make an uncached access */ #define CACHED(x) ((byte *)(((uint32)(x)) & 0xBFFFFFFF)) /* make an uncached access into a cached one */ +#define MIN_AMOUNT_FOR_COMPLEX_COPY 8 +#define MIN_AMOUNT_FOR_MISALIGNED_COPY 8 + +//#define __PSP_DEBUG_PRINT__ + +#include "backends/platform/psp/trace.h" + /** * Class that does memory copying and swapping if needed */ -class Copier { -public: - static void copy(byte *dst, const byte *src, uint32 bytes, PSPPixelFormat *format = NULL); - static void copy8(byte *dst, const byte *src, uint32 bytes); - static void copy16(uint16 *dst, const uint16 *src, uint32 bytes, PSPPixelFormat *format = NULL); +class PspMemory { +private: + static void testCopy(const byte *debugDst, const byte *debugSrc, uint32 debugBytes); + static void testSwap(const uint16 *debugDst, const uint16 *debugSrc, uint32 debugBytes, PSPPixelFormat &format); + static void copy(byte *dst, const byte *src, uint32 bytes); + static void swap(uint16 *dst16, const uint16 *src16, uint32 bytes, PSPPixelFormat &format); + static void copy32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes); + static void swap32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes, PSPPixelFormat &format); + static void copy32Misaligned(uint32 *dst32, const byte *src, uint32 bytes, uint32 alignSrc); + static uint32 misaligned32Detail(uint32 *dst32, uint32 *src32, uint32 bytes, uint32 alignSrc, const uint32 shiftValue, const uint32 lastShiftValue); + static void swap32Misaligned(uint32 *dst32, const uint16 *src16, uint32 bytes, PSPPixelFormat &format); + static void copy16(uint16 *dst, const uint16 *src, uint32 bytes); + + // For swapping, we know that we have multiples of 16 bits + static void swap16(uint16 *dst16, const uint16 *src16, uint32 bytes, PSPPixelFormat &format) { + PSP_DEBUG_PRINT("swap16 called with dst16[%p], src16[%p], bytes[%d]\n", dst16, src16, bytes); + uint32 shorts = bytes >> 1; + + while (shorts--) { + *dst16++ = format.swapRedBlue16(*src16++); + } + } + + static void copy8(byte *dst, const byte *src, uint32 bytes) { + PSP_DEBUG_PRINT("copy8 called with dst[%p], src[%p], bytes[%d]\n", dst, src, bytes); + while (bytes--) { + *dst++ = *src++; + } + } + +public: + // This is the interface to the outside world + static void fastCopy(byte *dst, const byte *src, uint32 bytes) { + if (bytes < MIN_AMOUNT_FOR_COMPLEX_COPY) { + copy8(dst, src, bytes); + } else { // go to more powerful copy + copy(dst, src, bytes); + } + } + + static void fastSwap(byte *dst, const byte *src, uint32 bytes, PSPPixelFormat &format) { + if (bytes < MIN_AMOUNT_FOR_COMPLEX_COPY * 2) { + swap16((uint16 *)dst, (uint16 *)src, bytes, format); + } else { // go to more powerful copy + swap((uint16 *)dst, (uint16 *)src, bytes, format); + } + } }; /** |