diff options
Diffstat (limited to 'Source/Core/DSPCore/Src/DSPAnalyzer.cpp')
| -rw-r--r-- | Source/Core/DSPCore/Src/DSPAnalyzer.cpp | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/Source/Core/DSPCore/Src/DSPAnalyzer.cpp b/Source/Core/DSPCore/Src/DSPAnalyzer.cpp index 7319ba7a14..b4300867ac 100644 --- a/Source/Core/DSPCore/Src/DSPAnalyzer.cpp +++ b/Source/Core/DSPCore/Src/DSPAnalyzer.cpp @@ -85,6 +85,7 @@ void AnalyzeRange(int start_addr, int end_addr) // This may not be 100% accurate in case of jump tables! // It could get desynced, which would be bad. We'll see if that's an issue. + u16 last_arithmetic = 0; for (int addr = start_addr; addr < end_addr;) { UDSPInstruction inst = dsp_imem_read(addr); @@ -96,16 +97,32 @@ void AnalyzeRange(int start_addr, int end_addr) } code_flags[addr] |= CODE_START_OF_INST; // Look for loops. - if ((inst & 0xffe0) == 0x0060 || (inst & 0xff00) == 0x1100) { + if ((inst & 0xffe0) == 0x0060 || (inst & 0xff00) == 0x1100) + { // BLOOP, BLOOPI u16 loop_end = dsp_imem_read(addr + 1); code_flags[addr] |= CODE_LOOP_START; code_flags[loop_end] |= CODE_LOOP_END; - } else if ((inst & 0xffe0) == 0x0040 || (inst & 0xff00) == 0x1000) { + } + else if ((inst & 0xffe0) == 0x0040 || (inst & 0xff00) == 0x1000) + { // LOOP, LOOPI code_flags[addr] |= CODE_LOOP_START; code_flags[addr + 1] |= CODE_LOOP_END; } + + // Mark the last arithmetic/multiplier instruction before a branch. + // We must update the SR reg at these instructions + if (opcode->updates_sr) + { + last_arithmetic = addr; + } + + if (opcode->branch && !opcode->uncond_branch) + { + code_flags[last_arithmetic] |= CODE_UPDATE_SR; + } + addr += opcode->size; } @@ -126,12 +143,12 @@ void AnalyzeRange(int start_addr, int end_addr) } if (found) { - NOTICE_LOG(DSPLLE, "Idle skip location found at %02x (sigNum:%d)", addr, s+1); + INFO_LOG(DSPLLE, "Idle skip location found at %02x (sigNum:%d)", addr, s+1); code_flags[addr] |= CODE_IDLE_SKIP; } } } - NOTICE_LOG(DSPLLE, "Finished analysis."); + INFO_LOG(DSPLLE, "Finished analysis."); } void Analyze() |