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Improved DRAM random access address space

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This commit is contained in:
tevador 2018-11-16 19:05:18 +01:00
parent d3739015ea
commit 1cc4fda4e7
1 changed files with 15 additions and 9 deletions
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24
tests/rx2c.py
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@ -147,7 +147,10 @@ def writeInitialValues(file):
for i in range(8):
file.write("\tf{0} = *(int64_t*)(aesSeed + {1});\n".format(i, 64 + i * 8))
file.write("\taesInitialize((__m128i*)aesKey, (__m128i*)aesSeed, (__m128i*)scratchpad, SCRATCHPAD_SIZE);\n")
file.write("\tmmu.m0 = (aesKey[10] << 16) | (aesKey[11] << 24);\n")
file.write("\tmmu.ma = *(addr_t*)(aesKey + 8) & ~7U;\n")
file.write("#ifdef PRNTADDR\n")
file.write('\tprintf("DRAM address = %#010x\\n", mmu.ma);\n')
file.write("#endif\n")
file.write("\tmmu.mx = 0;\n")
file.write("\tsp = 0;\n")
file.write("\tic = {0};\n".format(INSTRUCTION_COUNT))
@ -448,7 +451,7 @@ def writeProlog(file):
" void* address;\n"
"} stack_t;\n"
"typedef struct {\n"
" addr_t m0;\n"
" addr_t ma;\n"
" addr_t mx;\n"
"#ifdef RAM\n"
" const char* buffer;\n"
@ -463,10 +466,10 @@ def writeProlog(file):
"#define SCRATCHPAD_256K(x) scratchpad[(x) & SCRATCHPAD_MASK18]\n"
"#define STACK_LENGTH (128 * 1024)\n"
"#ifdef RAM\n"
"#define DRAM_READ(mmu) (convertible_t)*(uint64_t*)((mmu)->buffer + (mmu)->m0)\n"
"#define PREFETCH(mmu) _mm_prefetch(((mmu)->buffer + (mmu)->m0), _MM_HINT_T0)\n"
"#define DRAM_READ(mmu) (convertible_t)*(uint64_t*)((mmu)->buffer + (mmu)->ma)\n"
"#define PREFETCH(mmu) _mm_prefetch(((mmu)->buffer + (mmu)->ma), _MM_HINT_T0)\n"
"#else\n"
"#define DRAM_READ(mmu) (convertible_t)(uint64_t)__rolq(6364136223846793005ULL*((mmu)->m0)+1442695040888963407ULL,32)\n"
"#define DRAM_READ(mmu) (convertible_t)(uint64_t)__rolq(6364136223846793005ULL*((mmu)->ma)+1442695040888963407ULL,32)\n"
"#define PREFETCH(mmu)\n"
"#endif\n"
"#define PUSH_VALUE(x) stack[sp++].value = x\n"
@ -477,11 +480,14 @@ def writeProlog(file):
"static convertible_t readDram(mmu_t* mmu, addr_t addr) {\n"
" convertible_t data;\n"
" data = DRAM_READ(mmu);\n"
" mmu->m0 += 8;\n"
" mmu->ma += 8;\n"
" mmu->mx ^= addr;\n"
" if((mmu->mx & 0xFFF8) == 0) {\n"
" mmu->m0 = mmu->mx & ~7U;\n"
"#if defined(PREF)\n"
" if((mmu->mx & 0x1FFF) == 0) {\n"
"#ifdef PRNTADDR\n"
' printf("DRAM jump %#010x -> %#010x\\n", mmu->ma, mmu->mx);\n'
"#endif\n"
" mmu->ma = mmu->mx;\n"
"#ifdef PREF\n"
" PREFETCH(mmu);\n"
"#endif\n"
" }\n"