f468db7602
* Implement Thumb (32-bit) memory (ordered), multiply and bitfield instructions * Remove public from interface * Fix T32 BL immediate and implement signed and unsigned extend instructions
35 lines
1017 B
C#
35 lines
1017 B
C#
using ARMeilleure.Instructions;
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namespace ARMeilleure.Decoders
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{
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class OpCodeT32BImm24 : OpCodeT32, IOpCode32BImm
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{
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public long Immediate { get; }
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public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCodeT32BImm24(inst, address, opCode);
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public OpCodeT32BImm24(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
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{
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uint pc = GetPc();
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if (inst.Name == InstName.Blx)
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{
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pc &= ~3u;
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}
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int imm11 = (opCode >> 0) & 0x7ff;
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int j2 = (opCode >> 11) & 1;
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int j1 = (opCode >> 13) & 1;
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int imm10 = (opCode >> 16) & 0x3ff;
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int s = (opCode >> 26) & 1;
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int i1 = j1 ^ s ^ 1;
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int i2 = j2 ^ s ^ 1;
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int imm32 = imm11 | (imm10 << 11) | (i2 << 21) | (i1 << 22) | (s << 23);
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imm32 = (imm32 << 8) >> 7;
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Immediate = pc + imm32;
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}
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}
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} |