diff options
| author | Alex Barney <thealexbarney@gmail.com> | 2018-10-30 19:43:02 -0600 |
|---|---|---|
| committer | gdkchan <gab.dark.100@gmail.com> | 2018-10-30 22:43:02 -0300 |
| commit | 9cb57fb4bb3bbae0ae052a5af4a96a49fc5d864d (patch) | |
| tree | 0c97425aeb311c142bc92a6fcc503cb2c07d4376 /ChocolArm64/Instructions/InstEmitCcmp.cs | |
| parent | 5a87e58183578f5b84ca8d01cbb76aed11820f78 (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.cs | 81 |
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); + } + } +}
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