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T16: Implement LDR (literal)

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This commit is contained in:
merry 2022-02-10 22:26:14 +00:00
parent d84c2417aa
commit a9f952ad40
5 changed files with 31 additions and 3 deletions
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4
ARMeilleure/Decoders/IOpCode32Mem.cs
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@ -7,5 +7,9 @@ namespace ARMeilleure.Decoders
bool WBack { get; } bool WBack { get; }
bool IsLoad { get; } bool IsLoad { get; }
bool Index { get; }
bool Add { get; }
int Immediate { get; }
} }
} }

23
ARMeilleure/Decoders/OpCodeT16MemLit.cs Normal file
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@ -0,0 +1,23 @@
namespace ARMeilleure.Decoders
{
class OpCodeT16MemLit : OpCodeT16, IOpCode32Mem
{
public int Rt { get; }
public int Rn => 15;
public bool WBack => false;
public bool IsLoad => true;
public bool Index => true;
public bool Add => true;
public int Immediate { get; }
public new static OpCode Create(InstDescriptor inst, ulong address, int opCode, bool inITBlock) => new OpCodeT16MemLit(inst, address, opCode, inITBlock);
public OpCodeT16MemLit(InstDescriptor inst, ulong address, int opCode, bool inITBlock) : base(inst, address, opCode, inITBlock)
{
Rt = (opCode >> 8) & 7;
Immediate = (opCode & 0xff) << 2;
}
}
}

1
ARMeilleure/Decoders/OpCodeTable.cs
View file

@ -1004,6 +1004,7 @@ namespace ARMeilleure.Decoders
SetT16("01000110xxxxxxxx", InstName.Mov, InstEmit32.Mov, OpCodeT16AluRegHigh.Create); SetT16("01000110xxxxxxxx", InstName.Mov, InstEmit32.Mov, OpCodeT16AluRegHigh.Create);
SetT16("010001110xxxx000", InstName.Bx, InstEmit32.Bx, OpCodeT16BReg.Create); SetT16("010001110xxxx000", InstName.Bx, InstEmit32.Bx, OpCodeT16BReg.Create);
SetT16("010001111xxxx000", InstName.Blx, InstEmit32.Blx, OpCodeT16BReg.Create); SetT16("010001111xxxx000", InstName.Blx, InstEmit32.Blx, OpCodeT16BReg.Create);
SetT16("01001xxxxxxxxxxx", InstName.Ldr, InstEmit32.Ldr, OpCodeT16MemLit.Create);
#endregion #endregion
FillFastLookupTable(InstA32FastLookup, AllInstA32, ToFastLookupIndexA); FillFastLookupTable(InstA32FastLookup, AllInstA32, ToFastLookupIndexA);

2
ARMeilleure/Instructions/InstEmitMemory32.cs
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@ -151,7 +151,7 @@ namespace ARMeilleure.Instructions
private static void EmitLoadOrStore(ArmEmitterContext context, int size, AccessType accType) private static void EmitLoadOrStore(ArmEmitterContext context, int size, AccessType accType)
{ {
OpCode32Mem op = (OpCode32Mem)context.CurrOp; IOpCode32Mem op = (IOpCode32Mem)context.CurrOp;
Operand n = context.Copy(GetIntA32AlignedPC(context, op.Rn)); Operand n = context.Copy(GetIntA32AlignedPC(context, op.Rn));
Operand m = GetMemM(context, setCarry: false); Operand m = GetMemM(context, setCarry: false);

2
ARMeilleure/Instructions/InstEmitMemoryHelper.cs
View file

@ -551,7 +551,7 @@ namespace ARMeilleure.Instructions
case OpCode32MemReg op: return GetIntA32(context, op.Rm); case OpCode32MemReg op: return GetIntA32(context, op.Rm);
case OpCode32Mem op: return Const(op.Immediate); case IOpCode32Mem op: return Const(op.Immediate);
case OpCode32SimdMemImm op: return Const(op.Immediate); case OpCode32SimdMemImm op: return Const(op.Immediate);