aboutsummaryrefslogtreecommitdiff
path: root/ChocolArm64/Instructions/InstEmitCcmp.cs
diff options
context:
space:
mode:
authorAlex Barney <thealexbarney@gmail.com>2018-10-30 19:43:02 -0600
committergdkchan <gab.dark.100@gmail.com>2018-10-30 22:43:02 -0300
commit9cb57fb4bb3bbae0ae052a5af4a96a49fc5d864d (patch)
tree0c97425aeb311c142bc92a6fcc503cb2c07d4376 /ChocolArm64/Instructions/InstEmitCcmp.cs
parent5a87e58183578f5b84ca8d01cbb76aed11820f78 (diff)
Adjust naming conventions for Ryujinx and ChocolArm64 projects (#484)
* Change naming convention for Ryujinx project * Change naming convention for ChocolArm64 project * Fix NaN * Remove unneeded this. from Ryujinx project * Adjust naming from new PRs * Name changes based on feedback * How did this get removed? * Rebasing fix * Change FP enum case * Remove prefix from ChocolArm64 classes - Part 1 * Remove prefix from ChocolArm64 classes - Part 2 * Fix alignment from last commit's renaming * Rename namespaces * Rename stragglers * Fix alignment * Rename OpCode class * Missed a few * Adjust alignment
Diffstat (limited to 'ChocolArm64/Instructions/InstEmitCcmp.cs')
-rw-r--r--ChocolArm64/Instructions/InstEmitCcmp.cs81
1 files changed, 81 insertions, 0 deletions
diff --git a/ChocolArm64/Instructions/InstEmitCcmp.cs b/ChocolArm64/Instructions/InstEmitCcmp.cs
new file mode 100644
index 00000000..b91104c9
--- /dev/null
+++ b/ChocolArm64/Instructions/InstEmitCcmp.cs
@@ -0,0 +1,81 @@
+using ChocolArm64.Decoders;
+using ChocolArm64.State;
+using ChocolArm64.Translation;
+using System;
+using System.Reflection.Emit;
+
+using static ChocolArm64.Instructions.InstEmitAluHelper;
+
+namespace ChocolArm64.Instructions
+{
+ static partial class InstEmit
+ {
+ private enum CcmpOp
+ {
+ Cmp,
+ Cmn
+ }
+
+ public static void Ccmn(ILEmitterCtx context) => EmitCcmp(context, CcmpOp.Cmn);
+ public static void Ccmp(ILEmitterCtx context) => EmitCcmp(context, CcmpOp.Cmp);
+
+ private static void EmitCcmp(ILEmitterCtx context, CcmpOp cmpOp)
+ {
+ OpCodeCcmp64 op = (OpCodeCcmp64)context.CurrOp;
+
+ ILLabel lblTrue = new ILLabel();
+ ILLabel lblEnd = new ILLabel();
+
+ context.EmitCondBranch(lblTrue, op.Cond);
+
+ context.EmitLdc_I4((op.Nzcv >> 0) & 1);
+
+ context.EmitStflg((int)PState.VBit);
+
+ context.EmitLdc_I4((op.Nzcv >> 1) & 1);
+
+ context.EmitStflg((int)PState.CBit);
+
+ context.EmitLdc_I4((op.Nzcv >> 2) & 1);
+
+ context.EmitStflg((int)PState.ZBit);
+
+ context.EmitLdc_I4((op.Nzcv >> 3) & 1);
+
+ context.EmitStflg((int)PState.NBit);
+
+ context.Emit(OpCodes.Br_S, lblEnd);
+
+ context.MarkLabel(lblTrue);
+
+ EmitDataLoadOpers(context);
+
+ if (cmpOp == CcmpOp.Cmp)
+ {
+ context.Emit(OpCodes.Sub);
+
+ context.EmitZnFlagCheck();
+
+ EmitSubsCCheck(context);
+ EmitSubsVCheck(context);
+ }
+ else if (cmpOp == CcmpOp.Cmn)
+ {
+ context.Emit(OpCodes.Add);
+
+ context.EmitZnFlagCheck();
+
+ EmitAddsCCheck(context);
+ EmitAddsVCheck(context);
+ }
+ else
+ {
+ throw new ArgumentException(nameof(cmpOp));
+ }
+
+ context.Emit(OpCodes.Pop);
+
+ context.MarkLabel(lblEnd);
+ }
+ }
+} \ No newline at end of file