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* 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
49 lines
1.4 KiB
C#
49 lines
1.4 KiB
C#
using ARMeilleure.IntermediateRepresentation;
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using System;
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namespace ARMeilleure.Decoders
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{
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class OpCode : IOpCode
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{
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public ulong Address { get; }
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public int RawOpCode { get; }
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public int OpCodeSizeInBytes { get; protected set; } = 4;
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public InstDescriptor Instruction { get; protected set; }
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public RegisterSize RegisterSize { get; protected set; }
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public static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCode(inst, address, opCode);
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public OpCode(InstDescriptor inst, ulong address, int opCode)
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{
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Instruction = inst;
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Address = address;
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RawOpCode = opCode;
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RegisterSize = RegisterSize.Int64;
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}
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public int GetPairsCount() => GetBitsCount() / 16;
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public int GetBytesCount() => GetBitsCount() / 8;
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public int GetBitsCount()
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{
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switch (RegisterSize)
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{
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case RegisterSize.Int32: return 32;
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case RegisterSize.Int64: return 64;
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case RegisterSize.Simd64: return 64;
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case RegisterSize.Simd128: return 128;
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}
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throw new InvalidOperationException();
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}
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public OperandType GetOperandType()
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{
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return RegisterSize == RegisterSize.Int32 ? OperandType.I32 : OperandType.I64;
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}
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}
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} |