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98e05ee4b7
* Decoders: Add InITBlock argument
* OpCodeTable: Minor cleanup
* OpCodeTable: Remove existing thumb instruction implementations
* OpCodeTable: Prepare for thumb instructions
* OpCodeTables: Improve thumb fast lookup
* Tests: Prepare for thumb tests
* T16: Implement BX
* T16: Implement LSL/LSR/ASR (imm)
* T16: Implement ADDS, SUBS (reg)
* T16: Implement ADDS, SUBS (3-bit immediate)
* T16: Implement MOVS, CMP, ADDS, SUBS (8-bit immediate)
* T16: Implement ANDS, EORS, LSLS, LSRS, ASRS, ADCS, SBCS, RORS, TST, NEGS, CMP, CMN, ORRS, MULS, BICS, MVNS (low registers)
* T16: Implement ADD, CMP, MOV (high reg)
* T16: Implement BLX (reg)
* T16: Implement LDR (literal)
* T16: Implement {LDR,STR}{,H,B,SB,SH} (register)
* T16: Implement {LDR,STR}{,B,H} (immediate)
* T16: Implement LDR/STR (SP)
* T16: Implement ADR
* T16: Implement Add to SP (immediate)
* T16: Implement ADD/SUB (SP)
* T16: Implement SXTH, SXTB, UXTH, UTXB
* T16: Implement CBZ, CBNZ
* T16: Implement PUSH, POP
* T16: Implement REV, REV16, REVSH
* T16: Implement NOP
* T16: Implement LDM, STM
* T16: Implement SVC
* T16: Implement B (conditional)
* T16: Implement B (unconditional)
* T16: Implement IT
* fixup! T16: Implement ADD/SUB (SP)
* fixup! T16: Implement Add to SP (immediate)
* fixup! T16: Implement IT
* CpuTestThumb: Add randomized tests
* Remove inITBlock argument
* Address nits
* Use index to handle IfThenBlockState
* Reduce line noise
* fixup
* nit
27 lines
840 B
C#
27 lines
840 B
C#
namespace ARMeilleure.Decoders
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{
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class OpCodeT16MemReg : OpCodeT16, IOpCode32MemReg
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{
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public int Rm { get; }
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public int Rt { get; }
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public int Rn { get; }
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public bool WBack => false;
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public bool IsLoad { get; }
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public bool Index => true;
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public bool Add => true;
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public int Immediate => throw new System.InvalidOperationException();
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public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCodeT16MemReg(inst, address, opCode);
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public OpCodeT16MemReg(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
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{
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Rt = (opCode >> 0) & 7;
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Rn = (opCode >> 3) & 7;
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Rm = (opCode >> 6) & 7;
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IsLoad = ((opCode >> 9) & 7) >= 3;
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}
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}
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}
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