diff options
Diffstat (limited to 'ARMeilleure/Instructions/InstEmitFlow32.cs')
-rw-r--r-- | ARMeilleure/Instructions/InstEmitFlow32.cs | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/ARMeilleure/Instructions/InstEmitFlow32.cs b/ARMeilleure/Instructions/InstEmitFlow32.cs index 6665ca51..add66a42 100644 --- a/ARMeilleure/Instructions/InstEmitFlow32.cs +++ b/ARMeilleure/Instructions/InstEmitFlow32.cs @@ -64,7 +64,7 @@ namespace ARMeilleure.Instructions bool isThumb = IsThumb(context.CurrOp); uint currentPc = isThumb - ? pc | 1 + ? (pc - 2) | 1 : pc - 4; SetIntA32(context, GetBankedRegisterAlias(context.Mode, RegisterAlias.Aarch32Lr), Const(currentPc)); @@ -80,5 +80,32 @@ namespace ARMeilleure.Instructions EmitBxWritePc(context, GetIntA32(context, op.Rm), op.Rm); } + + public static void Cbnz(ArmEmitterContext context) => EmitCb(context, onNotZero: true); + public static void Cbz(ArmEmitterContext context) => EmitCb(context, onNotZero: false); + + private static void EmitCb(ArmEmitterContext context, bool onNotZero) + { + OpCodeT16BImmCmp op = (OpCodeT16BImmCmp)context.CurrOp; + + Operand value = GetIntOrZR(context, op.Rn); + Operand lblTarget = context.GetLabel((ulong)op.Immediate); + + if (onNotZero) + { + context.BranchIfTrue(lblTarget, value); + } + else + { + context.BranchIfFalse(lblTarget, value); + } + } + + public static void It(ArmEmitterContext context) + { + OpCodeT16IfThen op = (OpCodeT16IfThen)context.CurrOp; + + context.SetIfThenBlockState(op.IfThenBlockConds); + } } }
\ No newline at end of file |