diff options
| author | LDj3SNuD <35856442+LDj3SNuD@users.noreply.github.com> | 2019-11-14 03:08:07 +0100 |
|---|---|---|
| committer | jduncanator <1518948+jduncanator@users.noreply.github.com> | 2019-11-14 13:08:07 +1100 |
| commit | 7c111a356704bc86038d2001f9bbe56d27152590 (patch) | |
| tree | 2d7b7d47b02c5ce3ed132d78c203659a4e38d960 /ARMeilleure/Instructions/InstEmitSystem.cs | |
| parent | f0188bb34502c94b6826c986ce1d5e11aeb4ce56 (diff) | |
Add Mrs & Msr (Nzcv) Inst., with Tests. (#819)
* Add Mrs & Msr (Nzcv) Inst., with Tests.
* Don't use `NativeInterface`.
Diffstat (limited to 'ARMeilleure/Instructions/InstEmitSystem.cs')
| -rw-r--r-- | ARMeilleure/Instructions/InstEmitSystem.cs | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/ARMeilleure/Instructions/InstEmitSystem.cs b/ARMeilleure/Instructions/InstEmitSystem.cs index eeb53c1f..49973404 100644 --- a/ARMeilleure/Instructions/InstEmitSystem.cs +++ b/ARMeilleure/Instructions/InstEmitSystem.cs @@ -1,5 +1,6 @@ using ARMeilleure.Decoders; using ARMeilleure.IntermediateRepresentation; +using ARMeilleure.State; using ARMeilleure.Translation; using System; @@ -32,6 +33,7 @@ namespace ARMeilleure.Instructions { case 0b11_011_0000_0000_001: dlg = new _U64(NativeInterface.GetCtrEl0); break; case 0b11_011_0000_0000_111: dlg = new _U64(NativeInterface.GetDczidEl0); break; + case 0b11_011_0100_0010_000: EmitGetNzcv(context); return; case 0b11_011_0100_0100_000: dlg = new _U64(NativeInterface.GetFpcr); break; case 0b11_011_0100_0100_001: dlg = new _U64(NativeInterface.GetFpsr); break; case 0b11_011_1101_0000_010: dlg = new _U64(NativeInterface.GetTpidrEl0); break; @@ -53,6 +55,7 @@ namespace ARMeilleure.Instructions switch (GetPackedId(op)) { + case 0b11_011_0100_0010_000: EmitSetNzcv(context); return; case 0b11_011_0100_0100_000: dlg = new _Void_U64(NativeInterface.SetFpcr); break; case 0b11_011_0100_0100_001: dlg = new _Void_U64(NativeInterface.SetFpsr); break; case 0b11_011_1101_0000_010: dlg = new _Void_U64(NativeInterface.SetTpidrEl0); break; @@ -110,5 +113,44 @@ namespace ARMeilleure.Instructions return id; } + + private static void EmitGetNzcv(ArmEmitterContext context) + { + OpCodeSystem op = (OpCodeSystem)context.CurrOp; + + Operand vSh = context.ShiftLeft(GetFlag(PState.VFlag), Const((int)PState.VFlag)); + Operand cSh = context.ShiftLeft(GetFlag(PState.CFlag), Const((int)PState.CFlag)); + Operand zSh = context.ShiftLeft(GetFlag(PState.ZFlag), Const((int)PState.ZFlag)); + Operand nSh = context.ShiftLeft(GetFlag(PState.NFlag), Const((int)PState.NFlag)); + + Operand nzcvSh = context.BitwiseOr(context.BitwiseOr(nSh, zSh), context.BitwiseOr(cSh, vSh)); + + SetIntOrZR(context, op.Rt, nzcvSh); + } + + private static void EmitSetNzcv(ArmEmitterContext context) + { + OpCodeSystem op = (OpCodeSystem)context.CurrOp; + + Operand t = GetIntOrZR(context, op.Rt); + t = context.ConvertI64ToI32(t); + + Operand v = context.ShiftRightUI(t, Const((int)PState.VFlag)); + v = context.BitwiseAnd (v, Const(1)); + + Operand c = context.ShiftRightUI(t, Const((int)PState.CFlag)); + c = context.BitwiseAnd (c, Const(1)); + + Operand z = context.ShiftRightUI(t, Const((int)PState.ZFlag)); + z = context.BitwiseAnd (z, Const(1)); + + Operand n = context.ShiftRightUI(t, Const((int)PState.NFlag)); + n = context.BitwiseAnd (n, Const(1)); + + SetFlag(context, PState.VFlag, v); + SetFlag(context, PState.CFlag, c); + SetFlag(context, PState.ZFlag, z); + SetFlag(context, PState.NFlag, n); + } } } |