diff options
Diffstat (limited to 'backends/platform/psp/memory.cpp')
| -rw-r--r-- | backends/platform/psp/memory.cpp | 100 |
1 files changed, 50 insertions, 50 deletions
diff --git a/backends/platform/psp/memory.cpp b/backends/platform/psp/memory.cpp index 1e08173286..924ab356e8 100644 --- a/backends/platform/psp/memory.cpp +++ b/backends/platform/psp/memory.cpp @@ -49,29 +49,29 @@ void PspMemory::copy(byte *dst, const byte *src, uint32 bytes) { // align the destination pointer first uint32 prefixDst = (((uint32)dst) & 0x3); - + if (prefixDst) { - prefixDst = 4 - prefixDst; // prefix only if we have address % 4 != 0 + prefixDst = 4 - prefixDst; // prefix only if we have address % 4 != 0 PSP_DEBUG_PRINT("prefixDst[%d]\n", prefixDst); bytes -= prefixDst; // remember we assume bytes >= 4 - + if (bytes < MIN_AMOUNT_FOR_COMPLEX_COPY) { // check if it's worthwhile to continue copy8(dst, src, bytes + prefixDst); #ifdef TEST_MEMORY_COPY testCopy(debugDst, debugSrc, debugBytes); -#endif +#endif return; } - + while (prefixDst--) { *dst++ = *src++; - } + } } - + // check the source pointer alignment now uint32 alignSrc = (((uint32)src) & 0x3); - + if (alignSrc) { // we'll need to realign our reads copy32Misaligned((uint32 *)dst, src, bytes, alignSrc); } else { @@ -80,14 +80,14 @@ void PspMemory::copy(byte *dst, const byte *src, uint32 bytes) { #ifdef TEST_MEMORY_COPY testCopy(debugDst, debugSrc, debugBytes); -#endif +#endif } void PspMemory::copy32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes) { PSP_DEBUG_PRINT("copy32Aligned(): dst32[%p], src32[%p], bytes[%d]\n", dst32, src32, bytes); int words8 = bytes >> 5; - + // try blocks of 8 words at a time if (words8) { while (words8--) { @@ -110,11 +110,11 @@ void PspMemory::copy32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes) dst32[7] = d; dst32 += 8; src32 += 8; - } + } } - + int words4 = (bytes & 0x1F) >> 4; - + // try blocks of 4 words at a time if (words4) { uint32 a, b, c, d; @@ -129,10 +129,10 @@ void PspMemory::copy32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes) dst32 += 4; src32 += 4; } - + int bytesLeft = (bytes & 0xF); // only look at bytes left after we did the above int wordsLeft = bytesLeft >> 2; - + // now just do single words while (wordsLeft) { *dst32++ = *src32++; @@ -145,7 +145,7 @@ void PspMemory::copy32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes) byte *dst = (byte *)dst32; byte *src = (byte *)src32; - + while (bytesLeft--) { *dst++ = *src++; } @@ -155,10 +155,10 @@ void PspMemory::copy32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes) // Assume dst is aligned void PspMemory::copy32Misaligned(uint32 *dst32, const byte *src, uint32 bytes, uint32 alignSrc) { PSP_DEBUG_PRINT("copy32Misaligned: dst32[%p], src[%p], bytes[%d], alignSrc[%d]\n", dst32, src, bytes, alignSrc); - + uint32 *src32 = (uint32 *)(((uint32)src) & 0xFFFFFFFC); // remove misalignment uint32 shiftValue, lastShiftValue; - + switch (alignSrc) { case 1: shiftValue = 8; @@ -178,9 +178,9 @@ void PspMemory::copy32Misaligned(uint32 *dst32, const byte *src, uint32 bytes, u // Try to do groups of 4 words uint32 words4 = bytes >> 4; - + srcWord = *src32; // preload 1st word so we read ahead - + for (; words4; words4--) { dstWord = srcWord >> shiftValue; srcWord = src32[1]; @@ -201,12 +201,12 @@ void PspMemory::copy32Misaligned(uint32 *dst32, const byte *src, uint32 bytes, u src32 += 4; dst32 += 4; } - + uint32 words = (bytes & 0xF) >> 2; // now get remaining words - + // we read one word ahead of what we write // setup the first read - + for (; words ;words--) { dstWord = srcWord >> shiftValue; srcWord = src32[1]; // we still go one ahead @@ -214,9 +214,9 @@ void PspMemory::copy32Misaligned(uint32 *dst32, const byte *src, uint32 bytes, u dstWord |= srcWord << lastShiftValue; *dst32++ = dstWord; } - + uint32 bytesLeft = bytes & 3; // and remaining bytes - + if (bytesLeft) { byte *dst8 = (byte *)dst32; byte *src8 = ((byte *)src32) + ((uint32)src & 0x3); // get exact location we should be at @@ -228,7 +228,7 @@ void PspMemory::copy32Misaligned(uint32 *dst32, const byte *src, uint32 bytes, u } void PspMemory::testCopy(const byte *debugDst, const byte *debugSrc, uint32 debugBytes) { - + bool mismatch = false; PSP_INFO_PRINT("testing fastCopy..."); @@ -246,10 +246,10 @@ void PspMemory::testCopy(const byte *debugDst, const byte *debugSrc, uint32 debu PSP_INFO_PRINT("\n"); } else { PSP_INFO_PRINT("ok\n"); - } + } } -// +// // used to swap red and blue void PspMemorySwap::swap(uint16 *dst16, const uint16 *src16, uint32 bytes, PSPPixelFormat &format) { DEBUG_ENTER_FUNC(); @@ -258,45 +258,45 @@ void PspMemorySwap::swap(uint16 *dst16, const uint16 *src16, uint32 bytes, PSPPi uint32 debugBytes = bytes; const uint16 *debugDst = dst16, *debugSrc = src16; #endif - + // align the destination pointer first uint32 prefixDst = (((uint32)dst16) & 0x3); // for swap, we can only have 2 or 0 as our prefix - + if (prefixDst) { bytes -= prefixDst; // remember we assume bytes > 4 *dst16++ = format.swapRedBlue16(*src16++); - + if (bytes < MIN_AMOUNT_FOR_COMPLEX_COPY) { // check if it's worthwhile to continue swap16(dst16, src16, bytes, format); #ifdef TEST_MEMORY_COPY testSwap(debugDst, debugSrc, debugBytes, format); -#endif +#endif return; } } - + // check the source pointer alignment now uint32 alignSrc = (((uint32)src16) & 0x3); - + if (alignSrc) { // we'll need to realign our reads PSP_DEBUG_PRINT("misaligned copy of %u bytes from %p to %p\n", bytes, src16, dst16); swap32Misaligned((uint32 *)dst16, src16, bytes, format); } else { swap32Aligned((uint32 *)dst16, (const uint32 *)src16, bytes, format); } - + #ifdef TEST_MEMORY_COPY testSwap(debugDst, debugSrc, debugBytes, format); -#endif - +#endif + } void PspMemorySwap::testSwap(const uint16 *debugDst, const uint16 *debugSrc, uint32 debugBytes, PSPPixelFormat &format) { - + bool mismatch = false; PSP_INFO_PRINT("testing fastSwap..."); - + uint32 shorts = debugBytes >> 1; for (uint32 i = 0; i < shorts; i++) { @@ -313,13 +313,13 @@ void PspMemorySwap::testSwap(const uint16 *debugDst, const uint16 *debugSrc, uin PSP_INFO_PRINT("\n"); } else { PSP_INFO_PRINT("ok\n"); - } + } } void PspMemorySwap::swap32Aligned(uint32 *dst32, const uint32 *src32, uint32 bytes, PSPPixelFormat &format) { DEBUG_ENTER_FUNC(); int words4 = bytes >> 4; - + // try blocks of 4 words at a time while (words4--) { uint32 a, b, c, d; @@ -337,14 +337,14 @@ void PspMemorySwap::swap32Aligned(uint32 *dst32, const uint32 *src32, uint32 byt uint32 bytesLeft = bytes & 0xF; uint32 words = bytesLeft >> 2; - + // now just do words while (words--) { *dst32++ = format.swapRedBlue32(*src32++); - } + } bytesLeft = bytes & 0x3; - + if (bytesLeft) { // for swap, can only be 1 short left *((uint16 *)dst32) = format.swapRedBlue16(*((uint16 *)src32)); } @@ -357,7 +357,7 @@ void PspMemorySwap::swap32Misaligned(uint32 *dst32, const uint16 *src16, uint32 const uint32 shiftValue = 16; uint32 *src32 = (uint32 *)(((uint32)src16) & 0xFFFFFFFC); // remove misalignment - + // Try to do groups of 4 words uint32 words4 = bytes >> 4; uint32 srcWord = src32[0]; // preload @@ -382,15 +382,15 @@ void PspMemorySwap::swap32Misaligned(uint32 *dst32, const uint16 *src16, uint32 src32 += 4; dst32 += 4; } - + uint32 words = (bytes & 0xF) >> 2; - + // we read one word ahead of what we write // setup the first read if (words) { //srcWord = *src32++; // don't need this. already loaded src32++; // we already have the value loaded in - + while (words--) { uint32 dstWord = srcWord >> shiftValue; srcWord = *src32++; @@ -398,9 +398,9 @@ void PspMemorySwap::swap32Misaligned(uint32 *dst32, const uint16 *src16, uint32 *dst32++ = format.swapRedBlue32(dstWord); } } - + uint32 bytesLeft = bytes & 3; - + if (bytesLeft) { // for swap, can only be 1 short left *((uint16 *)dst32) = format.swapRedBlue16((uint16)(srcWord >> shiftValue)); } |