272a7dfac4
BulletMultiThreaded shared implementation works now on both Win32 Threads and PS3 Cell SPU.
107 lines
2.2 KiB
C++
107 lines
2.2 KiB
C++
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#include "SpuFakeDma.h"
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#include <LinearMath/btScalar.h> //for btAssert
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//Disabling memcpy sometimes helps debugging DMA
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#define USE_MEMCPY 1
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///this unalignedDma should not be frequently used, only for small data. It handles alignment and performs check on size (<16 bytes)
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int stallingUnalignedDmaSmallGet(void *ls, uint64_t ea, uint32_t size)
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{
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btAssert(size<16);
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ATTRIBUTE_ALIGNED16(char tmpBuffer[32]);
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char* mainMem = (char*)ea;
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char* localStore = (char*)ls;
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uint32_t i;
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///make sure last 4 bits are the same, for cellDmaSmallGet
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uint32_t last4BitsOffset = ea & 0x0f;
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char* tmpTarget = tmpBuffer + last4BitsOffset;
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#ifdef WIN32
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#ifdef USE_MEMCPY
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memcpy(tmpTarget,mainMem,size);
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#else
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for ( i=0;i<size;i++)
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{
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tmpTarget[i] = mainMem[i];
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}
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#endif
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#else
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cellDmaSmallGet(tmpTarget,ea,size,DMA_TAG(1),0,0);
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//copy into final destination
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#endif
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cellDmaWaitTagStatusAll(DMA_MASK(1));
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//this is slowish, perhaps memcpy on SPU is smarter?
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for (i=0;i<size;i++)
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{
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localStore[i] = tmpTarget[i];
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}
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return 0;
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}
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#ifdef WIN32
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int cellDmaLargeGet(void *ls, uint64_t ea, uint32_t size, uint32_t tag, uint32_t tid, uint32_t rid)
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{
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char* mainMem = (char*)ea;
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char* localStore = (char*)ls;
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#ifdef USE_MEMCPY
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memcpy(localStore,mainMem,size);
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#else
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for (uint32_t i=0;i<size;i++)
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{
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localStore[i] = mainMem[i];
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}
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#endif
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return 0;
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}
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int cellDmaGet(void *ls, uint64_t ea, uint32_t size, uint32_t tag, uint32_t tid, uint32_t rid)
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{
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char* mainMem = (char*)ea;
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char* localStore = (char*)ls;
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#ifdef USE_MEMCPY
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memcpy(localStore,mainMem,size);
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#else
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for (uint32_t i=0;i<size;i++)
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{
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localStore[i] = mainMem[i];
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}
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#endif //#ifdef USE_MEMCPY
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return 0;
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}
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int cellDmaLargePut(const void *ls, uint64_t ea, uint32_t size, uint32_t tag, uint32_t tid, uint32_t rid)
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{
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char* mainMem = (char*)ea;
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const char* localStore = (const char*)ls;
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#ifdef USE_MEMCPY
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memcpy(mainMem,localStore,size);
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#else
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for (uint32_t i=0;i<size;i++)
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{
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mainMem[i] = localStore[i];
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}
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#endif //#ifdef USE_MEMCPY
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return 0;
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}
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void cellDmaWaitTagStatusAll(int ignore)
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{
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}
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#endif //WIN32
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