diff options
Diffstat (limited to 'ARMeilleure/Instructions/InstEmitFlow32.cs')
| -rw-r--r-- | ARMeilleure/Instructions/InstEmitFlow32.cs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/ARMeilleure/Instructions/InstEmitFlow32.cs b/ARMeilleure/Instructions/InstEmitFlow32.cs index 030713fb..19524b42 100644 --- a/ARMeilleure/Instructions/InstEmitFlow32.cs +++ b/ARMeilleure/Instructions/InstEmitFlow32.cs @@ -107,5 +107,30 @@ namespace ARMeilleure.Instructions context.SetIfThenBlockState(op.IfThenBlockConds); } + + public static void Tbb(ArmEmitterContext context) => EmitTb(context, halfword: false); + public static void Tbh(ArmEmitterContext context) => EmitTb(context, halfword: true); + + private static void EmitTb(ArmEmitterContext context, bool halfword) + { + OpCodeT32Tb op = (OpCodeT32Tb)context.CurrOp; + + Operand halfwords; + + if (halfword) + { + Operand address = context.Add(GetIntA32(context, op.Rn), context.ShiftLeft(GetIntA32(context, op.Rm), Const(1))); + halfwords = InstEmitMemoryHelper.EmitReadInt(context, address, 1); + } + else + { + Operand address = context.Add(GetIntA32(context, op.Rn), GetIntA32(context, op.Rm)); + halfwords = InstEmitMemoryHelper.EmitReadIntAligned(context, address, 0); + } + + Operand targetAddress = context.Add(Const((int)op.GetPc()), context.ShiftLeft(halfwords, Const(1))); + + EmitVirtualJump(context, targetAddress, isReturn: false); + } } }
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