dc8692ba94
See USE_SOFTWARE_CACHE in Bullet\src\BulletMultiThreaded\SpuNarrowPhaseCollisionTask\SpuGatheringCollisionTask.cpp It improves the Bullet midphase collision detection (triangle/vertex fetch) The license is CommonPublicLicense-1.0, see included license docs.
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
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* SCE CONFIDENTIAL
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* PLAYSTATION(R)3 Programmer Tool Runtime Library 085.007
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* Copyright (C) 2005 Sony Computer Entertainment Inc.
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* All Rights Reserved.
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*/
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#include <sys/spu_thread.h>
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#include <spu_printf.h>
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#include <spu_intrinsics.h>
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#include <sys/spu_thread.h>
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#include <sys/spu_event.h>
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#include <stdint.h>
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#define SPE_CACHE_NWAY 4
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#define SPE_CACHE_NSETS 32
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#define SPE_CACHELINE_SIZE 512
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#define SPE_CACHE_SET_TAGID(set) 16
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#define USE_SOFTWARE_CACHE 1
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#ifdef USE_SOFTWARE_CACHE
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#include "cache/include/spe_cache.h"
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void * spe_readcache(unsigned int ea)
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{
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int set, idx, line, byte;
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_spe_cache_nway_lookup_(ea, set, idx);
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if (unlikely(idx < 0)) {
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idx = _spe_cache_miss_(ea, set, -1);
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spu_writech(22, SPE_CACHE_SET_TAGMASK(set));
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spu_mfcstat(MFC_TAG_UPDATE_ALL);
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}
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line = _spe_cacheline_num_(set, idx);
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byte = _spe_cacheline_byte_offset_(ea);
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return (void *) &spe_cache_mem[line + byte];
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}
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#endif //USE_SOFTWARE_CACHE
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int main(int spu_num,uint64_t mainmemPtr)
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{
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int memPtr = (int) mainmemPtr;
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#define MAX_BUF 256
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char spuBuffer[MAX_BUF];
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spuBuffer[0] = 0;
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char* result,*result2; //= spe_cache_rd(mainmemPtr);
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#ifdef USE_SOFTWARE_CACHE
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//this is a brute-force sample.
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//you can use the software cache more efficient using __spe_cache_rd_x4 to read 4 elements at a time
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int i=0;
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do
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{
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result = spe_readcache(mainmemPtr+i);
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//spe_readcache is the expanded version of spe_cache_rd MACRO
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spuBuffer[i] = result[0];
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i++;
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} while (result[0] && (i<MAX_BUF)); //assume that the buffer ends with [0] in main memory
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//result = _spe_cache_lookup_xfer_wait_(mainmemPtr, 0, 1);
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result = spe_readcache(mainmemPtr);
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result2 = spe_readcache(mainmemPtr);
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#endif //USE_SOFTWARE_CACHE
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if (i>= MAX_BUF)
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{
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spu_printf("spe_readcache buffer overflow. is the buffer 0-terminated?\n");
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}
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spu_printf("spe_cache_rd(%x) = %s\n", memPtr,spuBuffer);
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sys_spu_thread_exit(0);
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}
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