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author | bunnei <bunneidev@gmail.com> | 2020-07-17 23:11:52 +0200 |
---|---|---|
committer | GitHub <noreply@github.com> | 2020-07-17 23:11:52 +0200 |
commit | 5d95e62443f8174e65678dcb714222a736b21614 (patch) | |
tree | 617ef4384902e760e3a20b5738dcdd4d1556657a | |
parent | Merge pull request #4309 from Morph1984/fix-romfs-bug (diff) | |
parent | clang-format (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | src/core/memory/dmnt_cheat_vm.cpp | 29 | ||||
-rw-r--r-- | src/core/memory/dmnt_cheat_vm.h | 14 |
2 files changed, 42 insertions, 1 deletions
diff --git a/src/core/memory/dmnt_cheat_vm.cpp b/src/core/memory/dmnt_cheat_vm.cpp index fb9f36bfd..2e7da23fe 100644 --- a/src/core/memory/dmnt_cheat_vm.cpp +++ b/src/core/memory/dmnt_cheat_vm.cpp @@ -190,6 +190,15 @@ void DmntCheatVm::LogOpcode(const CheatVmOpcode& opcode) { callbacks->CommandLog( fmt::format("Act[{:02X}]: {:d}", i, save_restore_regmask->should_operate[i])); } + } else if (auto rw_static_reg = std::get_if<ReadWriteStaticRegisterOpcode>(&opcode.opcode)) { + callbacks->CommandLog("Opcode: Read/Write Static Register"); + if (rw_static_reg->static_idx < NumReadableStaticRegisters) { + callbacks->CommandLog("Op Type: ReadStaticRegister"); + } else { + callbacks->CommandLog("Op Type: WriteStaticRegister"); + } + callbacks->CommandLog(fmt::format("Reg Idx {:X}", rw_static_reg->idx)); + callbacks->CommandLog(fmt::format("Stc Idx {:X}", rw_static_reg->static_idx)); } else if (auto debug_log = std::get_if<DebugLogOpcode>(&opcode.opcode)) { callbacks->CommandLog("Opcode: Debug Log"); callbacks->CommandLog(fmt::format("Bit Width: {:X}", debug_log->bit_width)); @@ -544,6 +553,16 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) { } opcode.opcode = save_restore_regmask; } break; + case CheatVmOpcodeType::ReadWriteStaticRegister: { + ReadWriteStaticRegisterOpcode rw_static_reg{}; + // C3000XXx + // C3 = opcode 0xC3. + // XX = static register index. + // x = register index. + rw_static_reg.static_idx = ((first_dword >> 4) & 0xFF); + rw_static_reg.idx = (first_dword & 0xF); + opcode.opcode = rw_static_reg; + } break; case CheatVmOpcodeType::DebugLog: { DebugLogOpcode debug_log{}; // FFFTIX## @@ -667,6 +686,7 @@ void DmntCheatVm::ResetState() { registers.fill(0); saved_values.fill(0); loop_tops.fill(0); + static_registers.fill(0); instruction_ptr = 0; condition_depth = 0; decode_success = true; @@ -1153,6 +1173,15 @@ void DmntCheatVm::Execute(const CheatProcessMetadata& metadata) { } } } + } else if (auto rw_static_reg = + std::get_if<ReadWriteStaticRegisterOpcode>(&cur_opcode.opcode)) { + if (rw_static_reg->static_idx < NumReadableStaticRegisters) { + // Load a register with a static register. + registers[rw_static_reg->idx] = static_registers[rw_static_reg->static_idx]; + } else { + // Store a register to a static register. + static_registers[rw_static_reg->static_idx] = registers[rw_static_reg->idx]; + } } else if (auto debug_log = std::get_if<DebugLogOpcode>(&cur_opcode.opcode)) { // Read value from memory. u64 log_value = 0; diff --git a/src/core/memory/dmnt_cheat_vm.h b/src/core/memory/dmnt_cheat_vm.h index 8351fd798..21b86b72c 100644 --- a/src/core/memory/dmnt_cheat_vm.h +++ b/src/core/memory/dmnt_cheat_vm.h @@ -56,6 +56,7 @@ enum class CheatVmOpcodeType : u32 { BeginRegisterConditionalBlock = 0xC0, SaveRestoreRegister = 0xC1, SaveRestoreRegisterMask = 0xC2, + ReadWriteStaticRegister = 0xC3, // This is a meta entry, and not a real opcode. // This is to facilitate multi-nybble instruction decoding. @@ -237,6 +238,11 @@ struct SaveRestoreRegisterMaskOpcode { std::array<bool, 0x10> should_operate{}; }; +struct ReadWriteStaticRegisterOpcode { + u32 static_idx{}; + u32 idx{}; +}; + struct DebugLogOpcode { u32 bit_width{}; u32 log_id{}; @@ -259,7 +265,8 @@ struct CheatVmOpcode { PerformArithmeticStaticOpcode, BeginKeypressConditionalOpcode, PerformArithmeticRegisterOpcode, StoreRegisterToAddressOpcode, BeginRegisterConditionalOpcode, SaveRestoreRegisterOpcode, - SaveRestoreRegisterMaskOpcode, DebugLogOpcode, UnrecognizedInstruction> + SaveRestoreRegisterMaskOpcode, ReadWriteStaticRegisterOpcode, DebugLogOpcode, + UnrecognizedInstruction> opcode{}; }; @@ -281,6 +288,10 @@ public: static constexpr std::size_t MaximumProgramOpcodeCount = 0x400; static constexpr std::size_t NumRegisters = 0x10; + static constexpr std::size_t NumReadableStaticRegisters = 0x80; + static constexpr std::size_t NumWritableStaticRegisters = 0x80; + static constexpr std::size_t NumStaticRegisters = + NumReadableStaticRegisters + NumWritableStaticRegisters; explicit DmntCheatVm(std::unique_ptr<Callbacks> callbacks); ~DmntCheatVm(); @@ -302,6 +313,7 @@ private: std::array<u32, MaximumProgramOpcodeCount> program{}; std::array<u64, NumRegisters> registers{}; std::array<u64, NumRegisters> saved_values{}; + std::array<u64, NumStaticRegisters> static_registers{}; std::array<std::size_t, NumRegisters> loop_tops{}; bool DecodeNextOpcode(CheatVmOpcode& out); |