public static void Emit(byte[] instruction, CompilationContext context)
{
// 6T0RIor0 VVVVVVVV VVVVVVVV
// T: Width of memory write(1, 2, 4, or 8 bytes).
// R: Register used as base memory address.
// I: Increment register flag(0 = do not increment R, 1 = increment R by T).
// o: Offset register enable flag(0 = do not add r to address, 1 = add r to address).
// r: Register used as offset when o is 1.
// V: Value to write to memory.
byte operationWidth = instruction[OperationWidthIndex];
Register sourceRegister = context.GetRegister(instruction[AddressRegisterIndex]);
byte incrementAddressRegister = instruction[IncrementAddressRegisterIndex];
byte useOffsetRegister = instruction[UseOffsetRegisterIndex];
ulong immediate = InstructionHelper.GetImmediate(instruction, ValueImmediateIndex, ValueImmediateSize);
Value <ulong> storeValue = new Value <ulong>(immediate);
Pointer destinationMemory;
switch (useOffsetRegister)
{
case 0:
// Don't offset the address register by another register.
destinationMemory = MemoryHelper.EmitPointer(sourceRegister, context);
break;
case 1:
// Replace the source address by the sum of the base and offset registers.
Register offsetRegister = context.GetRegister(instruction[OffsetRegisterIndex]);
destinationMemory = MemoryHelper.EmitPointer(sourceRegister, offsetRegister, context);
break;
default:
throw new TamperCompilationException($"Invalid offset mode {useOffsetRegister} in Atmosphere cheat");
}
InstructionHelper.EmitMov(operationWidth, context, destinationMemory, storeValue);
switch (incrementAddressRegister)
{
case 0:
// Don't increment the address register by operationWidth.
break;
case 1:
// Increment the address register by operationWidth.
IOperand increment = new Value <ulong>(operationWidth);
context.CurrentOperations.Add(new OpAdd <ulong>(sourceRegister, sourceRegister, increment));
break;
default:
throw new TamperCompilationException($"Invalid increment mode {incrementAddressRegister} in Atmosphere cheat");
}
}
public static void Emit(byte[] instruction, CompilationContext context)
{
// 5TMR00AA AAAAAAAA
// T: Width of memory read (1, 2, 4, or 8 bytes).
// M: Memory region to write to (0 = Main NSO, 1 = Heap).
// R: Register to load value into.
// A: Immediate offset to use from memory region base.
// 5TMR10AA AAAAAAAA
// T: Width of memory read(1, 2, 4, or 8 bytes).
// M: Ignored.
// R: Register to use as base address and to load value into.
// A: Immediate offset to use from register R.
byte operationWidth = instruction[OperationWidthIndex];
MemoryRegion memoryRegion = (MemoryRegion)instruction[MemoryRegionIndex];
Register destinationRegister = context.GetRegister(instruction[DestinationRegisterIndex]);
byte useDestinationAsSourceIndex = instruction[UseDestinationAsSourceIndex];
ulong address = InstructionHelper.GetImmediate(instruction, OffsetImmediateIndex, OffsetImmediateSize);
Pointer sourceMemory;
switch (useDestinationAsSourceIndex)
{
case 0:
// Don't use the source register as an additional address offset.
sourceMemory = MemoryHelper.EmitPointer(memoryRegion, address, context);
break;
case 1:
// Use the source register as the base address.
sourceMemory = MemoryHelper.EmitPointer(destinationRegister, address, context);
break;
default:
throw new TamperCompilationException($"Invalid source mode {useDestinationAsSourceIndex} in Atmosphere cheat");
}
InstructionHelper.EmitMov(operationWidth, context, destinationRegister, sourceMemory);
}
public static void Emit(byte[] instruction, CompilationContext context)
{
// 0TMR00AA AAAAAAAA VVVVVVVV (VVVVVVVV)
// T: Width of memory write(1, 2, 4, or 8 bytes).
// M: Memory region to write to(0 = Main NSO, 1 = Heap).
// R: Register to use as an offset from memory region base.
// A: Immediate offset to use from memory region base.
// V: Value to write.
byte operationWidth = instruction[OperationWidthIndex];
MemoryRegion memoryRegion = (MemoryRegion)instruction[MemoryRegionIndex];
Register offsetRegister = context.GetRegister(instruction[OffsetRegisterIndex]);
ulong offsetImmediate = InstructionHelper.GetImmediate(instruction, OffsetImmediateIndex, OffsetImmediateSize);
Pointer dstMem = MemoryHelper.EmitPointer(memoryRegion, offsetRegister, offsetImmediate, context);
int valueImmediateSize = operationWidth <= 4 ? ValueImmediateSize8 : ValueImmediateSize16;
ulong valueImmediate = InstructionHelper.GetImmediate(instruction, ValueImmediateIndex, valueImmediateSize);
Value <ulong> storeValue = new Value <ulong>(valueImmediate);
InstructionHelper.EmitMov(operationWidth, context, dstMem, storeValue);
}
public static void Emit(byte[] instruction, CompilationContext context)
{
// ATSRIOxa (aaaaaaaa)
// T: Width of memory write (1, 2, 4, or 8 bytes).
// S: Register to write to memory.
// R: Register to use as base address.
// I: Increment register flag (0 = do not increment R, 1 = increment R by T).
// O: Offset type, see below.
// x: Register used as offset when O is 1, Memory type when O is 3, 4 or 5.
// a: Value used as offset when O is 2, 4 or 5.
byte operationWidth = instruction[OperationWidthIndex];
Register sourceRegister = context.GetRegister(instruction[SourceRegisterIndex]);
Register addressRegister = context.GetRegister(instruction[AddressRegisterIndex]);
byte incrementAddressRegister = instruction[IncrementAddressRegisterIndex];
byte offsetType = instruction[AddressingTypeIndex];
byte registerOrMemoryRegion = instruction[RegisterOrMemoryRegionIndex];
int immediateSize = instruction.Length <= 8 ? OffsetImmediateSize1 : OffsetImmediateSize9;
ulong immediate = InstructionHelper.GetImmediate(instruction, OffsetImmediateIndex, immediateSize);
Pointer destinationMemory;
switch (offsetType)
{
case AddressRegister:
// *($R) = $S
destinationMemory = MemoryHelper.EmitPointer(addressRegister, context);
break;
case AddressRegisterWithOffsetRegister:
// *($R + $x) = $S
Register offsetRegister = context.GetRegister(registerOrMemoryRegion);
destinationMemory = MemoryHelper.EmitPointer(addressRegister, offsetRegister, context);
break;
case OffsetImmediate:
// *(#a) = $S
destinationMemory = MemoryHelper.EmitPointer(addressRegister, immediate, context);
break;
case MemoryRegionWithOffsetRegister:
// *(?x + $R) = $S
destinationMemory = MemoryHelper.EmitPointer((MemoryRegion)registerOrMemoryRegion, addressRegister, context);
break;
case MemoryRegionWithOffsetImmediate:
// *(?x + #a) = $S
destinationMemory = MemoryHelper.EmitPointer((MemoryRegion)registerOrMemoryRegion, immediate, context);
break;
case MemoryRegionWithOffsetRegisterAndImmediate:
// *(?x + #a + $R) = $S
destinationMemory = MemoryHelper.EmitPointer((MemoryRegion)registerOrMemoryRegion, addressRegister, immediate, context);
break;
default:
throw new TamperCompilationException($"Invalid offset type {offsetType} in Atmosphere cheat");
}
InstructionHelper.EmitMov(operationWidth, context, destinationMemory, sourceRegister);
switch (incrementAddressRegister)
{
case 0:
// Don't increment the address register by operationWidth.
break;
case 1:
// Increment the address register by operationWidth.
IOperand increment = new Value <ulong>(operationWidth);
context.CurrentOperations.Add(new OpAdd <ulong>(addressRegister, addressRegister, increment));
break;
default:
throw new TamperCompilationException($"Invalid increment mode {incrementAddressRegister} in Atmosphere cheat");
}
}