forked from Mirror/Ryujinx
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
41 lines
1.9 KiB
C#
41 lines
1.9 KiB
C#
namespace Ryujinx.HLE.HOS.Tamper.CodeEmitters
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{
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/// <summary>
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/// Code type 0 allows writing a static value to a memory address.
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/// </summary>
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class StoreConstantToAddress
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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 OffsetRegisterIndex = 3;
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private const int OffsetImmediateIndex = 6;
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private const int ValueImmediateIndex = 16;
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private const int OffsetImmediateSize = 10;
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private const int ValueImmediateSize8 = 8;
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private const int ValueImmediateSize16 = 16;
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public static void Emit(byte[] instruction, CompilationContext context)
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{
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// 0TMR00AA AAAAAAAA VVVVVVVV (VVVVVVVV)
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// T: Width of memory write(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 use as an offset from memory region base.
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// A: Immediate offset to use from memory region base.
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// V: Value to write.
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byte operationWidth = instruction[OperationWidthIndex];
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MemoryRegion memoryRegion = (MemoryRegion)instruction[MemoryRegionIndex];
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Register offsetRegister = context.GetRegister(instruction[OffsetRegisterIndex]);
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ulong offsetImmediate = InstructionHelper.GetImmediate(instruction, OffsetImmediateIndex, OffsetImmediateSize);
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Pointer dstMem = MemoryHelper.EmitPointer(memoryRegion, offsetRegister, offsetImmediate, context);
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int valueImmediateSize = operationWidth <= 4 ? ValueImmediateSize8 : ValueImmediateSize16;
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ulong valueImmediate = InstructionHelper.GetImmediate(instruction, ValueImmediateIndex, valueImmediateSize);
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Value<ulong> storeValue = new Value<ulong>(valueImmediate);
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InstructionHelper.EmitMov(operationWidth, context, dstMem, storeValue);
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}
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}
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}
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