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Implement TEQ and MOV (Imm16)

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Starlet Leonhart 2019-11-12 19:59:01 -05:00 • committed by Thog
parent 021ed3f44e
commit bbb86a1f7c
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6 changed files with 39 additions and 7 deletions
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15
ARMeilleure/Decoders/OpCode32AluImm16.cs Normal file
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@ -0,0 +1,15 @@
namespace ARMeilleure.Decoders
{
class OpCode32AluImm16 : OpCode32Alu
{
public int Immediate { get; private set; }
public OpCode32AluImm16(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
int imm12 = opCode & 0xffff;
int imm4 = (opCode >> 16) & 0xf;
Immediate = (imm4 << 12) | imm12;
}
}
}

8
ARMeilleure/Decoders/OpCode32AluRsImm.cs
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@ -2,15 +2,15 @@ namespace ARMeilleure.Decoders
{
class OpCode32AluRsImm : OpCode32Alu
{
public int Rm { get; private set; }
public int Imm { get; private set; }
public int Rm { get; private set; }
public int Immediate { get; private set; }
public ShiftType ShiftType { get; private set; }
public OpCode32AluRsImm(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
{
Rm = (opCode >> 0) & 0xf;
Imm = (opCode >> 7) & 0x1f;
Rm = (opCode >> 0) & 0xf;
Immediate = (opCode >> 7) & 0x1f;
ShiftType = (ShiftType)((opCode >> 5) & 3);
}

2
ARMeilleure/Decoders/OpCodeTable.cs
View file

@ -617,6 +617,7 @@ namespace ARMeilleure.Decoders
SetA32("<<<<000xx1x1xxxxxxxxxxxx1111xxxx", InstName.Ldrsh, InstEmit32.Ldrsh, typeof(OpCode32MemImm8));
SetA32("<<<<0011101x0000xxxxxxxxxxxxxxxx", InstName.Mov, InstEmit32.Mov, typeof(OpCode32AluImm));
SetA32("<<<<0001101x0000xxxxxxxxxxx0xxxx", InstName.Mov, InstEmit32.Mov, typeof(OpCode32AluRsImm));
SetA32("<<<<00110000xxxxxxxxxxxxxxxxxxxx", InstName.Mov, InstEmit32.Mov, typeof(OpCode32AluImm16));
SetT32("xxxxxxxxxxxxxxxx00100xxxxxxxxxxx", InstName.Mov, InstEmit32.Mov, typeof(OpCodeT16AluImm8));
SetA32("<<<<100xx0x0xxxxxxxxxxxxxxxxxxxx", InstName.Stm, InstEmit32.Stm, typeof(OpCode32MemMult));
SetA32("<<<<010xx0x0xxxxxxxxxxxxxxxxxxxx", InstName.Str, InstEmit32.Str, typeof(OpCode32MemImm));
@ -625,6 +626,7 @@ namespace ARMeilleure.Decoders
SetA32("<<<<000xx1x0xxxxxxxxxxxx1011xxxx", InstName.Strh, InstEmit32.Strh, typeof(OpCode32MemImm8));
SetA32("<<<<0010010xxxxxxxxxxxxxxxxxxxxx", InstName.Sub, InstEmit32.Sub, typeof(OpCode32AluImm));
SetA32("<<<<0000010xxxxxxxxxxxxxxxx0xxxx", InstName.Sub, InstEmit32.Sub, typeof(OpCode32AluRsImm));
SetA32("<<<<00110011xxxx0000xxxxxxxxxxxx", InstName.Teq, InstEmit32.Teq, typeof(OpCode32AluImm));
#endregion
FillFastLookupTable(_instA32FastLookup, _allInstA32);

12
ARMeilleure/Instructions/InstEmitAlu32.cs
View file

@ -80,6 +80,18 @@ namespace ARMeilleure.Instructions
EmitAluStore(context, res);
}
public static void Teq(ArmEmitterContext context)
{
IOpCode32Alu op = (IOpCode32Alu)context.CurrOp;
Operand n = GetAluN(context);
Operand m = GetAluM(context);
Operand res = context.BitwiseExclusiveOr(n, m);
EmitNZFlagsCheck(context, res);
}
private static void EmitAluStore(ArmEmitterContext context, Operand value)
{
IOpCode32Alu op = (IOpCode32Alu)context.CurrOp;

6
ARMeilleure/Instructions/InstEmitAluHelper.cs
View file

@ -116,6 +116,8 @@ namespace ARMeilleure.Instructions
return Const(op.Immediate);
}
case OpCode32AluImm16 op: return Const(op.Immediate);
case OpCode32AluRsImm op: return GetMShiftedByImmediate(context, op, setCarry);
case OpCodeT16AluImm8 op: return Const(op.Immediate);
@ -171,7 +173,7 @@ namespace ARMeilleure.Instructions
{
Operand m = GetIntA32(context, op.Rm);
int shift = op.Imm;
int shift = op.Immediate;
if (shift == 0)
{
@ -193,7 +195,7 @@ namespace ARMeilleure.Instructions
case ShiftType.Lsr: m = GetLsrC(context, m, setCarry, shift); break;
case ShiftType.Asr: m = GetAsrC(context, m, setCarry, shift); break;
case ShiftType.Ror:
if (op.Imm != 0)
if (op.Immediate != 0)
{
m = GetRorC(context, m, setCarry, shift);
}

3
ARMeilleure/Instructions/InstName.cs
View file

@ -458,6 +458,7 @@ namespace ARMeilleure.Instructions
Stm,
Strb,
Strd,
Strh
Strh,
Teq
}
}