0c1ea1212a
* Add initial implementation of the Tamper Machine * Implement Atmosphere opcodes 0, 4 and 9 * Add missing TamperCompilationException class * Implement Atmosphere conditional and loop opcodes 1, 2 and 3 * Inplement input conditional opcode 8 * Add register store opcode A * Implement extended pause/resume opcodes FF0 and FF1 * Implement extended log opcode FFF * Implement extended register conditional opcode C0 * Refactor TamperProgram to an interface * Moved Atmosphere classes to a separate subdirectory * Fix OpProcCtrl class not setting process * Implement extended register save/restore opcodes C1, C2 and C3 * Refactor code emitters to separate classes * Supress memory access errors from the Tamper Machine * Add debug information to tamper register and memory writes * Add block stack check to Atmosphere Cheat compiler * Add handheld input support to Tamper Machine * Fix code styling * Fix build id and cheat case mismatch * Fix invalid immediate size selection * Print build ids of the title * Prevent Tamper Machine from change code regions * Remove Atmosphere namespace * Remove empty cheats from the list * Prevent code modification without disabling the tampering * Fix missing addressing mode in LoadRegisterWithMemory * Fix wrong addressing in RegisterConditional * Add name to the tamper machine thread * Fix code styling
58 lines
2.5 KiB
C#
58 lines
2.5 KiB
C#
using Ryujinx.HLE.Exceptions;
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namespace Ryujinx.HLE.HOS.Tamper.CodeEmitters
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{
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/// <summary>
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/// Code type 5 allows loading a value from memory into a register, either using a fixed address or by
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/// dereferencing the destination register.
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/// </summary>
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class LoadRegisterWithMemory
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{
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private const int OperationWidthIndex = 1;
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private const int MemoryRegionIndex = 2;
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private const int DestinationRegisterIndex = 3;
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private const int UseDestinationAsSourceIndex = 4;
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private const int OffsetImmediateIndex = 6;
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private const int OffsetImmediateSize = 10;
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public static void Emit(byte[] instruction, CompilationContext context)
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{
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// 5TMR00AA AAAAAAAA
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// T: Width of memory read (1, 2, 4, or 8 bytes).
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// M: Memory region to write to (0 = Main NSO, 1 = Heap).
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// R: Register to load value into.
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// A: Immediate offset to use from memory region base.
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// 5TMR10AA AAAAAAAA
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// T: Width of memory read(1, 2, 4, or 8 bytes).
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// M: Ignored.
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// R: Register to use as base address and to load value into.
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// A: Immediate offset to use from register R.
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byte operationWidth = instruction[OperationWidthIndex];
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MemoryRegion memoryRegion = (MemoryRegion)instruction[MemoryRegionIndex];
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Register destinationRegister = context.GetRegister(instruction[DestinationRegisterIndex]);
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byte useDestinationAsSourceIndex = instruction[UseDestinationAsSourceIndex];
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ulong address = InstructionHelper.GetImmediate(instruction, OffsetImmediateIndex, OffsetImmediateSize);
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Pointer sourceMemory;
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switch (useDestinationAsSourceIndex)
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{
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case 0:
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// Don't use the source register as an additional address offset.
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sourceMemory = MemoryHelper.EmitPointer(memoryRegion, address, context);
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break;
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case 1:
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// Use the source register as the base address.
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sourceMemory = MemoryHelper.EmitPointer(destinationRegister, address, context);
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break;
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default:
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throw new TamperCompilationException($"Invalid source mode {useDestinationAsSourceIndex} in Atmosphere cheat");
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}
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InstructionHelper.EmitMov(operationWidth, context, destinationRegister, sourceMemory);
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}
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}
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}
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