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Diffstat (limited to 'src/ARMJIT.cpp')
| -rw-r--r-- | src/ARMJIT.cpp | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/ARMJIT.cpp b/src/ARMJIT.cpp new file mode 100644 index 0000000..489cdcf --- /dev/null +++ b/src/ARMJIT.cpp @@ -0,0 +1,177 @@ +#include "ARMJIT.h" + +#include "ARMJIT_x64/ARMJIT_Compiler.h" + +namespace ARMJIT +{ + +Compiler* compiler; +BlockCache cache; + + +#define DUP2(x) x, x + +static ptrdiff_t JIT_MEM[2][32] = { + //arm9 + { + /* 0X*/ DUP2(offsetof(BlockCache, ARM9_ITCM)), + /* 1X*/ DUP2(offsetof(BlockCache, ARM9_ITCM)), // mirror + /* 2X*/ DUP2(offsetof(BlockCache, MainRAM)), + /* 3X*/ DUP2(offsetof(BlockCache, SWRAM)), + /* 4X*/ DUP2(-1), + /* 5X*/ DUP2(-1), + /* 6X*/ -1, + offsetof(BlockCache, ARM9_LCDC), // Plain ARM9-CPU Access (LCDC mode) (max 656KB) + /* 7X*/ DUP2(-1), + /* 8X*/ DUP2(-1), + /* 9X*/ DUP2(-1), + /* AX*/ DUP2(-1), + /* BX*/ DUP2(-1), + /* CX*/ DUP2(-1), + /* DX*/ DUP2(-1), + /* EX*/ DUP2(-1), + /* FX*/ DUP2(offsetof(BlockCache, ARM9_BIOS)) + }, + //arm7 + { + /* 0X*/ DUP2(offsetof(BlockCache, ARM7_BIOS)), + /* 1X*/ DUP2(-1), + /* 2X*/ DUP2(offsetof(BlockCache, MainRAM)), + /* 3X*/ offsetof(BlockCache, SWRAM), + offsetof(BlockCache, ARM7_WRAM), + /* 4X*/ -1, + offsetof(BlockCache, ARM7_WIRAM), + /* 5X*/ DUP2(-1), + /* 6X*/ DUP2(offsetof(BlockCache, ARM7_WVRAM)), /* contrary to Gbatek, melonDS and itself, + DeSmuME doesn't mirror the 64 MB region at 0x6800000 */ + /* 7X*/ DUP2(-1), + /* 8X*/ DUP2(-1), + /* 9X*/ DUP2(-1), + /* AX*/ DUP2(-1), + /* BX*/ DUP2(-1), + /* CX*/ DUP2(-1), + /* DX*/ DUP2(-1), + /* EX*/ DUP2(-1), + /* FX*/ DUP2(-1) + } +}; + +static u32 JIT_MASK[2][32] = { + //arm9 + { + /* 0X*/ DUP2(0x00007FFF), + /* 1X*/ DUP2(0x00007FFF), + /* 2X*/ DUP2(0x003FFFFF), + /* 3X*/ DUP2(0x00007FFF), + /* 4X*/ DUP2(0x00000000), + /* 5X*/ DUP2(0x00000000), + /* 6X*/ 0x00000000, + 0x000FFFFF, + /* 7X*/ DUP2(0x00000000), + /* 8X*/ DUP2(0x00000000), + /* 9X*/ DUP2(0x00000000), + /* AX*/ DUP2(0x00000000), + /* BX*/ DUP2(0x00000000), + /* CX*/ DUP2(0x00000000), + /* DX*/ DUP2(0x00000000), + /* EX*/ DUP2(0x00000000), + /* FX*/ DUP2(0x00007FFF) + }, + //arm7 + { + /* 0X*/ DUP2(0x00003FFF), + /* 1X*/ DUP2(0x00000000), + /* 2X*/ DUP2(0x003FFFFF), + /* 3X*/ 0x00007FFF, + 0x0000FFFF, + /* 4X*/ 0x00000000, + 0x0000FFFF, + /* 5X*/ DUP2(0x00000000), + /* 6X*/ DUP2(0x0003FFFF), + /* 7X*/ DUP2(0x00000000), + /* 8X*/ DUP2(0x00000000), + /* 9X*/ DUP2(0x00000000), + /* AX*/ DUP2(0x00000000), + /* BX*/ DUP2(0x00000000), + /* CX*/ DUP2(0x00000000), + /* DX*/ DUP2(0x00000000), + /* EX*/ DUP2(0x00000000), + /* FX*/ DUP2(0x00000000) + } +}; + +#undef DUP2 + + +void Init() +{ + memset(&cache, 0, sizeof(BlockCache)); + + for (int cpu = 0; cpu < 2; cpu++) + for (int i = 0; i < 0x4000; i++) + cache.AddrMapping[cpu][i] = JIT_MEM[cpu][i >> 9] == -1 ? NULL : + (CompiledBlock*)((u8*)&cache + JIT_MEM[cpu][i >> 9]) + + (((i << 14) & JIT_MASK[cpu][i >> 9]) >> 1); + + compiler = new Compiler(); +} + +void DeInit() +{ + delete compiler; +} + +CompiledBlock CompileBlock(ARM* cpu) +{ + bool thumb = cpu->CPSR & 0x20; + + FetchedInstr instrs[12]; + int i = 0; + u32 r15 = cpu->R[15]; + u32 nextInstr[2] = {cpu->NextInstr[0], cpu->NextInstr[1]}; + //printf("block %x %d\n", r15, thumb); + do + { + r15 += thumb ? 2 : 4; + + instrs[i].Instr = nextInstr[0]; + //printf("%x %x\n", instrs[i].Instr, r15); + instrs[i].NextInstr[0] = nextInstr[0] = nextInstr[1]; + + if (cpu->Num == 0) + { + ARMv5* cpuv5 = (ARMv5*)cpu; + if (thumb && r15 & 0x2) + { + nextInstr[1] >>= 16; + instrs[i].CodeCycles = 0; + } + else + { + nextInstr[1] = cpuv5->CodeRead32(r15, false); + instrs[i].CodeCycles = cpu->CodeCycles; + } + } + else + { + ARMv4* cpuv4 = (ARMv4*)cpu; + if (thumb) + nextInstr[1] = cpuv4->CodeRead16(r15); + else + nextInstr[1] = cpuv4->CodeRead32(r15); + instrs[i].CodeCycles = cpu->CodeCycles; + } + instrs[i].NextInstr[1] = nextInstr[1]; + instrs[i].Info = ARMInstrInfo::Decode(thumb, cpu->Num, instrs[i].Instr); + + i++; + } while(!instrs[i - 1].Info.Branches() && i < 10); + + CompiledBlock block = compiler->CompileBlock(cpu, instrs, i); + + InsertBlock(cpu->Num, cpu->R[15] - (thumb ? 2 : 4), block); + + return block; +} + +}
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