From 9cb57fb4bb3bbae0ae052a5af4a96a49fc5d864d Mon Sep 17 00:00:00 2001
From: Alex Barney <thealexbarney@gmail.com>
Date: Tue, 30 Oct 2018 19:43:02 -0600
Subject: 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
---
 ChocolArm64/Decoders/OpCodeMemImm64.cs | 53 ++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 ChocolArm64/Decoders/OpCodeMemImm64.cs

(limited to 'ChocolArm64/Decoders/OpCodeMemImm64.cs')

diff --git a/ChocolArm64/Decoders/OpCodeMemImm64.cs b/ChocolArm64/Decoders/OpCodeMemImm64.cs
new file mode 100644
index 00000000..edaa4970
--- /dev/null
+++ b/ChocolArm64/Decoders/OpCodeMemImm64.cs
@@ -0,0 +1,53 @@
+using ChocolArm64.Instructions;
+
+namespace ChocolArm64.Decoders
+{
+    class OpCodeMemImm64 : OpCodeMem64
+    {
+        public    long Imm      { get; protected set; }
+        public    bool WBack    { get; protected set; }
+        public    bool PostIdx  { get; protected set; }
+        protected bool Unscaled { get; private   set; }
+
+        private enum MemOp
+        {
+            Unscaled     = 0,
+            PostIndexed  = 1,
+            Unprivileged = 2,
+            PreIndexed   = 3,
+            Unsigned
+        }
+
+        public OpCodeMemImm64(Inst inst, long position, int opCode) : base(inst, position, opCode)
+        {
+            Extend64 = ((opCode >> 22) & 3) == 2;
+            WBack    = ((opCode >> 24) & 1) == 0;
+
+            //The type is not valid for the Unsigned Immediate 12-bits encoding,
+            //because the bits 11:10 are used for the larger Immediate offset.
+            MemOp type = WBack ? (MemOp)((opCode >> 10) & 3) : MemOp.Unsigned;
+
+            PostIdx  = type == MemOp.PostIndexed;
+            Unscaled = type == MemOp.Unscaled ||
+                       type == MemOp.Unprivileged;
+
+            //Unscaled and Unprivileged doesn't write back,
+            //but they do use the 9-bits Signed Immediate.
+            if (Unscaled)
+            {
+                WBack = false;
+            }
+
+            if (WBack || Unscaled)
+            {
+                //9-bits Signed Immediate.
+                Imm = (opCode << 43) >> 55;
+            }
+            else
+            {
+                //12-bits Unsigned Immediate.
+                Imm = ((opCode >> 10) & 0xfff) << Size;
+            }
+        }
+    }
+}
\ No newline at end of file
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