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authorLioncash <mathew1800@gmail.com>2020-08-03 14:37:12 +0200
committerLioncash <mathew1800@gmail.com>2020-08-03 14:50:51 +0200
commitc88366604510c9808fc6901af0a8e65cd95ad2cc (patch)
tree990bdf175cd1eea4e1d725b83869a2d5b7b5afce /src/core/memory/dmnt_cheat_vm.cpp
parentMerge pull request #4437 from lioncash/ptr (diff)
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Diffstat (limited to 'src/core/memory/dmnt_cheat_vm.cpp')
-rw-r--r--src/core/memory/dmnt_cheat_vm.cpp226
1 files changed, 121 insertions, 105 deletions
diff --git a/src/core/memory/dmnt_cheat_vm.cpp b/src/core/memory/dmnt_cheat_vm.cpp
index 2e7da23fe..48be80c12 100644
--- a/src/core/memory/dmnt_cheat_vm.cpp
+++ b/src/core/memory/dmnt_cheat_vm.cpp
@@ -313,30 +313,32 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
switch (opcode_type) {
case CheatVmOpcodeType::StoreStatic: {
- StoreStaticOpcode store_static{};
// 0TMR00AA AAAAAAAA YYYYYYYY (YYYYYYYY)
// Read additional words.
const u32 second_dword = GetNextDword();
- store_static.bit_width = (first_dword >> 24) & 0xF;
- store_static.mem_type = static_cast<MemoryAccessType>((first_dword >> 20) & 0xF);
- store_static.offset_register = ((first_dword >> 16) & 0xF);
- store_static.rel_address =
- (static_cast<u64>(first_dword & 0xFF) << 32ul) | static_cast<u64>(second_dword);
- store_static.value = GetNextVmInt(store_static.bit_width);
- opcode.opcode = store_static;
+ const u32 bit_width = (first_dword >> 24) & 0xF;
+
+ opcode.opcode = StoreStaticOpcode{
+ .bit_width = bit_width,
+ .mem_type = static_cast<MemoryAccessType>((first_dword >> 20) & 0xF),
+ .offset_register = (first_dword >> 16) & 0xF,
+ .rel_address = (static_cast<u64>(first_dword & 0xFF) << 32) | second_dword,
+ .value = GetNextVmInt(bit_width),
+ };
} break;
case CheatVmOpcodeType::BeginConditionalBlock: {
- BeginConditionalOpcode begin_cond{};
// 1TMC00AA AAAAAAAA YYYYYYYY (YYYYYYYY)
// Read additional words.
const u32 second_dword = GetNextDword();
- begin_cond.bit_width = (first_dword >> 24) & 0xF;
- begin_cond.mem_type = static_cast<MemoryAccessType>((first_dword >> 20) & 0xF);
- begin_cond.cond_type = static_cast<ConditionalComparisonType>((first_dword >> 16) & 0xF);
- begin_cond.rel_address =
- (static_cast<u64>(first_dword & 0xFF) << 32ul) | static_cast<u64>(second_dword);
- begin_cond.value = GetNextVmInt(begin_cond.bit_width);
- opcode.opcode = begin_cond;
+ const u32 bit_width = (first_dword >> 24) & 0xF;
+
+ opcode.opcode = BeginConditionalOpcode{
+ .bit_width = bit_width,
+ .mem_type = static_cast<MemoryAccessType>((first_dword >> 20) & 0xF),
+ .cond_type = static_cast<ConditionalComparisonType>((first_dword >> 16) & 0xF),
+ .rel_address = (static_cast<u64>(first_dword & 0xFF) << 32) | second_dword,
+ .value = GetNextVmInt(bit_width),
+ };
} break;
case CheatVmOpcodeType::EndConditionalBlock: {
// 20000000
@@ -344,12 +346,14 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
opcode.opcode = EndConditionalOpcode{};
} break;
case CheatVmOpcodeType::ControlLoop: {
- ControlLoopOpcode ctrl_loop{};
// 300R0000 VVVVVVVV
// 310R0000
// Parse register, whether loop start or loop end.
- ctrl_loop.start_loop = ((first_dword >> 24) & 0xF) == 0;
- ctrl_loop.reg_index = ((first_dword >> 20) & 0xF);
+ ControlLoopOpcode ctrl_loop{
+ .start_loop = ((first_dword >> 24) & 0xF) == 0,
+ .reg_index = (first_dword >> 20) & 0xF,
+ .num_iters = 0,
+ };
// Read number of iters if loop start.
if (ctrl_loop.start_loop) {
@@ -358,66 +362,65 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
opcode.opcode = ctrl_loop;
} break;
case CheatVmOpcodeType::LoadRegisterStatic: {
- LoadRegisterStaticOpcode ldr_static{};
// 400R0000 VVVVVVVV VVVVVVVV
// Read additional words.
- ldr_static.reg_index = ((first_dword >> 16) & 0xF);
- ldr_static.value =
- (static_cast<u64>(GetNextDword()) << 32ul) | static_cast<u64>(GetNextDword());
- opcode.opcode = ldr_static;
+ opcode.opcode = LoadRegisterStaticOpcode{
+ .reg_index = (first_dword >> 16) & 0xF,
+ .value = (static_cast<u64>(GetNextDword()) << 32) | GetNextDword(),
+ };
} break;
case CheatVmOpcodeType::LoadRegisterMemory: {
- LoadRegisterMemoryOpcode ldr_memory{};
// 5TMRI0AA AAAAAAAA
// Read additional words.
const u32 second_dword = GetNextDword();
- ldr_memory.bit_width = (first_dword >> 24) & 0xF;
- ldr_memory.mem_type = static_cast<MemoryAccessType>((first_dword >> 20) & 0xF);
- ldr_memory.reg_index = ((first_dword >> 16) & 0xF);
- ldr_memory.load_from_reg = ((first_dword >> 12) & 0xF) != 0;
- ldr_memory.rel_address =
- (static_cast<u64>(first_dword & 0xFF) << 32ul) | static_cast<u64>(second_dword);
- opcode.opcode = ldr_memory;
+ opcode.opcode = LoadRegisterMemoryOpcode{
+ .bit_width = (first_dword >> 24) & 0xF,
+ .mem_type = static_cast<MemoryAccessType>((first_dword >> 20) & 0xF),
+ .reg_index = ((first_dword >> 16) & 0xF),
+ .load_from_reg = ((first_dword >> 12) & 0xF) != 0,
+ .rel_address = (static_cast<u64>(first_dword & 0xFF) << 32) | second_dword,
+ };
} break;
case CheatVmOpcodeType::StoreStaticToAddress: {
- StoreStaticToAddressOpcode str_static{};
// 6T0RIor0 VVVVVVVV VVVVVVVV
// Read additional words.
- str_static.bit_width = (first_dword >> 24) & 0xF;
- str_static.reg_index = ((first_dword >> 16) & 0xF);
- str_static.increment_reg = ((first_dword >> 12) & 0xF) != 0;
- str_static.add_offset_reg = ((first_dword >> 8) & 0xF) != 0;
- str_static.offset_reg_index = ((first_dword >> 4) & 0xF);
- str_static.value =
- (static_cast<u64>(GetNextDword()) << 32ul) | static_cast<u64>(GetNextDword());
- opcode.opcode = str_static;
+ opcode.opcode = StoreStaticToAddressOpcode{
+ .bit_width = (first_dword >> 24) & 0xF,
+ .reg_index = (first_dword >> 16) & 0xF,
+ .increment_reg = ((first_dword >> 12) & 0xF) != 0,
+ .add_offset_reg = ((first_dword >> 8) & 0xF) != 0,
+ .offset_reg_index = (first_dword >> 4) & 0xF,
+ .value = (static_cast<u64>(GetNextDword()) << 32) | GetNextDword(),
+ };
} break;
case CheatVmOpcodeType::PerformArithmeticStatic: {
- PerformArithmeticStaticOpcode perform_math_static{};
// 7T0RC000 VVVVVVVV
// Read additional words.
- perform_math_static.bit_width = (first_dword >> 24) & 0xF;
- perform_math_static.reg_index = ((first_dword >> 16) & 0xF);
- perform_math_static.math_type =
- static_cast<RegisterArithmeticType>((first_dword >> 12) & 0xF);
- perform_math_static.value = GetNextDword();
- opcode.opcode = perform_math_static;
+ opcode.opcode = PerformArithmeticStaticOpcode{
+ .bit_width = (first_dword >> 24) & 0xF,
+ .reg_index = ((first_dword >> 16) & 0xF),
+ .math_type = static_cast<RegisterArithmeticType>((first_dword >> 12) & 0xF),
+ .value = GetNextDword(),
+ };
} break;
case CheatVmOpcodeType::BeginKeypressConditionalBlock: {
- BeginKeypressConditionalOpcode begin_keypress_cond{};
// 8kkkkkkk
// Just parse the mask.
- begin_keypress_cond.key_mask = first_dword & 0x0FFFFFFF;
- opcode.opcode = begin_keypress_cond;
+ opcode.opcode = BeginKeypressConditionalOpcode{
+ .key_mask = first_dword & 0x0FFFFFFF,
+ };
} break;
case CheatVmOpcodeType::PerformArithmeticRegister: {
- PerformArithmeticRegisterOpcode perform_math_reg{};
// 9TCRSIs0 (VVVVVVVV (VVVVVVVV))
- perform_math_reg.bit_width = (first_dword >> 24) & 0xF;
- perform_math_reg.math_type = static_cast<RegisterArithmeticType>((first_dword >> 20) & 0xF);
- perform_math_reg.dst_reg_index = ((first_dword >> 16) & 0xF);
- perform_math_reg.src_reg_1_index = ((first_dword >> 12) & 0xF);
- perform_math_reg.has_immediate = ((first_dword >> 8) & 0xF) != 0;
+ PerformArithmeticRegisterOpcode perform_math_reg{
+ .bit_width = (first_dword >> 24) & 0xF,
+ .math_type = static_cast<RegisterArithmeticType>((first_dword >> 20) & 0xF),
+ .dst_reg_index = (first_dword >> 16) & 0xF,
+ .src_reg_1_index = (first_dword >> 12) & 0xF,
+ .src_reg_2_index = 0,
+ .has_immediate = ((first_dword >> 8) & 0xF) != 0,
+ .value = {},
+ };
if (perform_math_reg.has_immediate) {
perform_math_reg.src_reg_2_index = 0;
perform_math_reg.value = GetNextVmInt(perform_math_reg.bit_width);
@@ -427,7 +430,6 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
opcode.opcode = perform_math_reg;
} break;
case CheatVmOpcodeType::StoreRegisterToAddress: {
- StoreRegisterToAddressOpcode str_register{};
// ATSRIOxa (aaaaaaaa)
// A = opcode 10
// T = bit width
@@ -439,20 +441,23 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
// Relative Address
// x = offset register (for offset type 1), memory type (for offset type 3)
// a = relative address (for offset type 2+3)
- str_register.bit_width = (first_dword >> 24) & 0xF;
- str_register.str_reg_index = ((first_dword >> 20) & 0xF);
- str_register.addr_reg_index = ((first_dword >> 16) & 0xF);
- str_register.increment_reg = ((first_dword >> 12) & 0xF) != 0;
- str_register.ofs_type = static_cast<StoreRegisterOffsetType>(((first_dword >> 8) & 0xF));
- str_register.ofs_reg_index = ((first_dword >> 4) & 0xF);
+ StoreRegisterToAddressOpcode str_register{
+ .bit_width = (first_dword >> 24) & 0xF,
+ .str_reg_index = (first_dword >> 20) & 0xF,
+ .addr_reg_index = (first_dword >> 16) & 0xF,
+ .increment_reg = ((first_dword >> 12) & 0xF) != 0,
+ .ofs_type = static_cast<StoreRegisterOffsetType>(((first_dword >> 8) & 0xF)),
+ .mem_type = MemoryAccessType::MainNso,
+ .ofs_reg_index = (first_dword >> 4) & 0xF,
+ .rel_address = 0,
+ };
switch (str_register.ofs_type) {
case StoreRegisterOffsetType::None:
case StoreRegisterOffsetType::Reg:
// Nothing more to do
break;
case StoreRegisterOffsetType::Imm:
- str_register.rel_address =
- ((static_cast<u64>(first_dword & 0xF) << 32ul) | static_cast<u64>(GetNextDword()));
+ str_register.rel_address = (static_cast<u64>(first_dword & 0xF) << 32) | GetNextDword();
break;
case StoreRegisterOffsetType::MemReg:
str_register.mem_type = static_cast<MemoryAccessType>((first_dword >> 4) & 0xF);
@@ -460,8 +465,7 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
case StoreRegisterOffsetType::MemImm:
case StoreRegisterOffsetType::MemImmReg:
str_register.mem_type = static_cast<MemoryAccessType>((first_dword >> 4) & 0xF);
- str_register.rel_address =
- ((static_cast<u64>(first_dword & 0xF) << 32ul) | static_cast<u64>(GetNextDword()));
+ str_register.rel_address = (static_cast<u64>(first_dword & 0xF) << 32) | GetNextDword();
break;
default:
str_register.ofs_type = StoreRegisterOffsetType::None;
@@ -470,7 +474,6 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
opcode.opcode = str_register;
} break;
case CheatVmOpcodeType::BeginRegisterConditionalBlock: {
- BeginRegisterConditionalOpcode begin_reg_cond{};
// C0TcSX##
// C0TcS0Ma aaaaaaaa
// C0TcS1Mr
@@ -492,11 +495,19 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
// r = offset register.
// X = other register.
// V = value.
- begin_reg_cond.bit_width = (first_dword >> 20) & 0xF;
- begin_reg_cond.cond_type =
- static_cast<ConditionalComparisonType>((first_dword >> 16) & 0xF);
- begin_reg_cond.val_reg_index = ((first_dword >> 12) & 0xF);
- begin_reg_cond.comp_type = static_cast<CompareRegisterValueType>((first_dword >> 8) & 0xF);
+
+ BeginRegisterConditionalOpcode begin_reg_cond{
+ .bit_width = (first_dword >> 20) & 0xF,
+ .cond_type = static_cast<ConditionalComparisonType>((first_dword >> 16) & 0xF),
+ .val_reg_index = (first_dword >> 12) & 0xF,
+ .comp_type = static_cast<CompareRegisterValueType>((first_dword >> 8) & 0xF),
+ .mem_type = MemoryAccessType::MainNso,
+ .addr_reg_index = 0,
+ .other_reg_index = 0,
+ .ofs_reg_index = 0,
+ .rel_address = 0,
+ .value = {},
+ };
switch (begin_reg_cond.comp_type) {
case CompareRegisterValueType::StaticValue:
@@ -508,26 +519,25 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
case CompareRegisterValueType::MemoryRelAddr:
begin_reg_cond.mem_type = static_cast<MemoryAccessType>((first_dword >> 4) & 0xF);
begin_reg_cond.rel_address =
- ((static_cast<u64>(first_dword & 0xF) << 32ul) | static_cast<u64>(GetNextDword()));
+ (static_cast<u64>(first_dword & 0xF) << 32) | GetNextDword();
break;
case CompareRegisterValueType::MemoryOfsReg:
begin_reg_cond.mem_type = static_cast<MemoryAccessType>((first_dword >> 4) & 0xF);
begin_reg_cond.ofs_reg_index = (first_dword & 0xF);
break;
case CompareRegisterValueType::RegisterRelAddr:
- begin_reg_cond.addr_reg_index = ((first_dword >> 4) & 0xF);
+ begin_reg_cond.addr_reg_index = (first_dword >> 4) & 0xF;
begin_reg_cond.rel_address =
- ((static_cast<u64>(first_dword & 0xF) << 32ul) | static_cast<u64>(GetNextDword()));
+ (static_cast<u64>(first_dword & 0xF) << 32) | GetNextDword();
break;
case CompareRegisterValueType::RegisterOfsReg:
- begin_reg_cond.addr_reg_index = ((first_dword >> 4) & 0xF);
- begin_reg_cond.ofs_reg_index = (first_dword & 0xF);
+ begin_reg_cond.addr_reg_index = (first_dword >> 4) & 0xF;
+ begin_reg_cond.ofs_reg_index = first_dword & 0xF;
break;
}
opcode.opcode = begin_reg_cond;
} break;
case CheatVmOpcodeType::SaveRestoreRegister: {
- SaveRestoreRegisterOpcode save_restore_reg{};
// C10D0Sx0
// C1 = opcode 0xC1
// D = destination index.
@@ -535,36 +545,37 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
// x = 3 if clearing reg, 2 if clearing saved value, 1 if saving a register, 0 if restoring
// a register.
// NOTE: If we add more save slots later, current encoding is backwards compatible.
- save_restore_reg.dst_index = (first_dword >> 16) & 0xF;
- save_restore_reg.src_index = (first_dword >> 8) & 0xF;
- save_restore_reg.op_type = static_cast<SaveRestoreRegisterOpType>((first_dword >> 4) & 0xF);
- opcode.opcode = save_restore_reg;
+ opcode.opcode = SaveRestoreRegisterOpcode{
+ .dst_index = (first_dword >> 16) & 0xF,
+ .src_index = (first_dword >> 8) & 0xF,
+ .op_type = static_cast<SaveRestoreRegisterOpType>((first_dword >> 4) & 0xF),
+ };
} break;
case CheatVmOpcodeType::SaveRestoreRegisterMask: {
- SaveRestoreRegisterMaskOpcode save_restore_regmask{};
// C2x0XXXX
// C2 = opcode 0xC2
// x = 3 if clearing reg, 2 if clearing saved value, 1 if saving, 0 if restoring.
// X = 16-bit bitmask, bit i --> save or restore register i.
- save_restore_regmask.op_type =
- static_cast<SaveRestoreRegisterOpType>((first_dword >> 20) & 0xF);
+ SaveRestoreRegisterMaskOpcode save_restore_regmask{
+ .op_type = static_cast<SaveRestoreRegisterOpType>((first_dword >> 20) & 0xF),
+ .should_operate = {},
+ };
for (std::size_t i = 0; i < NumRegisters; i++) {
- save_restore_regmask.should_operate[i] = (first_dword & (1u << i)) != 0;
+ save_restore_regmask.should_operate[i] = (first_dword & (1U << i)) != 0;
}
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;
+ opcode.opcode = ReadWriteStaticRegisterOpcode{
+ .static_idx = (first_dword >> 4) & 0xFF,
+ .idx = first_dword & 0xF,
+ };
} break;
case CheatVmOpcodeType::DebugLog: {
- DebugLogOpcode debug_log{};
// FFFTIX##
// FFFTI0Ma aaaaaaaa
// FFFTI1Mr
@@ -583,31 +594,36 @@ bool DmntCheatVm::DecodeNextOpcode(CheatVmOpcode& out) {
// a = relative address.
// r = offset register.
// X = value register.
- debug_log.bit_width = (first_dword >> 16) & 0xF;
- debug_log.log_id = ((first_dword >> 12) & 0xF);
- debug_log.val_type = static_cast<DebugLogValueType>((first_dword >> 8) & 0xF);
+ DebugLogOpcode debug_log{
+ .bit_width = (first_dword >> 16) & 0xF,
+ .log_id = (first_dword >> 12) & 0xF,
+ .val_type = static_cast<DebugLogValueType>((first_dword >> 8) & 0xF),
+ .mem_type = MemoryAccessType::MainNso,
+ .addr_reg_index = 0,
+ .val_reg_index = 0,
+ .ofs_reg_index = 0,
+ .rel_address = 0,
+ };
switch (debug_log.val_type) {
case DebugLogValueType::RegisterValue:
- debug_log.val_reg_index = ((first_dword >> 4) & 0xF);
+ debug_log.val_reg_index = (first_dword >> 4) & 0xF;
break;
case DebugLogValueType::MemoryRelAddr:
debug_log.mem_type = static_cast<MemoryAccessType>((first_dword >> 4) & 0xF);
- debug_log.rel_address =
- ((static_cast<u64>(first_dword & 0xF) << 32ul) | static_cast<u64>(GetNextDword()));
+ debug_log.rel_address = (static_cast<u64>(first_dword & 0xF) << 32) | GetNextDword();
break;
case DebugLogValueType::MemoryOfsReg:
debug_log.mem_type = static_cast<MemoryAccessType>((first_dword >> 4) & 0xF);
- debug_log.ofs_reg_index = (first_dword & 0xF);
+ debug_log.ofs_reg_index = first_dword & 0xF;
break;
case DebugLogValueType::RegisterRelAddr:
- debug_log.addr_reg_index = ((first_dword >> 4) & 0xF);
- debug_log.rel_address =
- ((static_cast<u64>(first_dword & 0xF) << 32ul) | static_cast<u64>(GetNextDword()));
+ debug_log.addr_reg_index = (first_dword >> 4) & 0xF;
+ debug_log.rel_address = (static_cast<u64>(first_dword & 0xF) << 32) | GetNextDword();
break;
case DebugLogValueType::RegisterOfsReg:
- debug_log.addr_reg_index = ((first_dword >> 4) & 0xF);
- debug_log.ofs_reg_index = (first_dword & 0xF);
+ debug_log.addr_reg_index = (first_dword >> 4) & 0xF;
+ debug_log.ofs_reg_index = first_dword & 0xF;
break;
}
opcode.opcode = debug_log;