From 6a1a03566aa04d6e3e32547821aae0bc587d1128 Mon Sep 17 00:00:00 2001
From: merry <git@mary.rs>
Date: Thu, 21 Apr 2022 00:25:43 +0100
Subject: T32: Implement load/store single (immediate) (#3186)

* T32: Implement load/store single (immediate)

* tests

* tidy formatting

* address comments
---
 ARMeilleure/Decoders/OpCodeT32MemImm12.cs | 25 +++++++++++++++++++++++++
 ARMeilleure/Decoders/OpCodeT32MemImm8.cs  | 29 +++++++++++++++++++++++++++++
 ARMeilleure/Decoders/OpCodeTable.cs       | 26 ++++++++++++++++++++++++++
 3 files changed, 80 insertions(+)
 create mode 100644 ARMeilleure/Decoders/OpCodeT32MemImm12.cs
 create mode 100644 ARMeilleure/Decoders/OpCodeT32MemImm8.cs

(limited to 'ARMeilleure')

diff --git a/ARMeilleure/Decoders/OpCodeT32MemImm12.cs b/ARMeilleure/Decoders/OpCodeT32MemImm12.cs
new file mode 100644
index 00000000..7838604b
--- /dev/null
+++ b/ARMeilleure/Decoders/OpCodeT32MemImm12.cs
@@ -0,0 +1,25 @@
+namespace ARMeilleure.Decoders
+{
+    class OpCodeT32MemImm12 : OpCodeT32, IOpCode32Mem
+    {
+        public int Rt { get; }
+        public int Rn { get; }
+        public bool WBack => false;
+        public bool IsLoad { get; }
+        public bool Index => true;
+        public bool Add => true;
+        public int Immediate { get; }
+
+        public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCodeT32MemImm12(inst, address, opCode);
+
+        public OpCodeT32MemImm12(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
+        {
+            Rt = (opCode >> 12) & 0xf;
+            Rn = (opCode >> 16) & 0xf;
+
+            Immediate = opCode & 0xfff;
+
+            IsLoad = ((opCode >> 20) & 1) != 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/ARMeilleure/Decoders/OpCodeT32MemImm8.cs b/ARMeilleure/Decoders/OpCodeT32MemImm8.cs
new file mode 100644
index 00000000..d8b7763c
--- /dev/null
+++ b/ARMeilleure/Decoders/OpCodeT32MemImm8.cs
@@ -0,0 +1,29 @@
+namespace ARMeilleure.Decoders
+{
+    class OpCodeT32MemImm8 : OpCodeT32, IOpCode32Mem
+    {
+        public int Rt { get; }
+        public int Rn { get; }
+        public bool WBack { get; }
+        public bool IsLoad { get; }
+        public bool Index { get; }
+        public bool Add { get; }
+        public int Immediate { get; }
+
+        public new static OpCode Create(InstDescriptor inst, ulong address, int opCode) => new OpCodeT32MemImm8(inst, address, opCode);
+
+        public OpCodeT32MemImm8(InstDescriptor inst, ulong address, int opCode) : base(inst, address, opCode)
+        {
+            Rt = (opCode >> 12) & 0xf;
+            Rn = (opCode >> 16) & 0xf;
+
+            Index = ((opCode >> 10) & 1) != 0;
+            Add   = ((opCode >> 9) & 1) != 0;
+            WBack = ((opCode >> 8) & 1) != 0;
+
+            Immediate = opCode & 0xff;
+
+            IsLoad = ((opCode >> 20) & 1) != 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/ARMeilleure/Decoders/OpCodeTable.cs b/ARMeilleure/Decoders/OpCodeTable.cs
index 28650256..197645cd 100644
--- a/ARMeilleure/Decoders/OpCodeTable.cs
+++ b/ARMeilleure/Decoders/OpCodeTable.cs
@@ -1065,6 +1065,26 @@ namespace ARMeilleure.Decoders
             SetT32("11110x011011xxxx0xxx1111xxxxxxxx", InstName.Cmp,      InstEmit32.Cmp,      OpCodeT32AluImm.Create);
             SetT32("11101010100<xxxx0xxx<<<<xxxxxxxx", InstName.Eor,      InstEmit32.Eor,      OpCodeT32AluRsImm.Create);
             SetT32("11110x00100<xxxx0xxx<<<<xxxxxxxx", InstName.Eor,      InstEmit32.Eor,      OpCodeT32AluImm.Create);
+            SetT32("111110000101xxxx<<<<10x1xxxxxxxx", InstName.Ldr,      InstEmit32.Ldr,      OpCodeT32MemImm8.Create);
+            SetT32("111110000101xxxx<<<<1100xxxxxxxx", InstName.Ldr,      InstEmit32.Ldr,      OpCodeT32MemImm8.Create);
+            SetT32("111110000101xxxx<<<<11x1xxxxxxxx", InstName.Ldr,      InstEmit32.Ldr,      OpCodeT32MemImm8.Create);
+            SetT32("111110001101xxxxxxxxxxxxxxxxxxxx", InstName.Ldr,      InstEmit32.Ldr,      OpCodeT32MemImm12.Create);
+            SetT32("111110000001xxxx<<<<10x1xxxxxxxx", InstName.Ldrb,     InstEmit32.Ldrb,     OpCodeT32MemImm8.Create);
+            SetT32("111110000001xxxx<<<<1100xxxxxxxx", InstName.Ldrb,     InstEmit32.Ldrb,     OpCodeT32MemImm8.Create);
+            SetT32("111110000001xxxx<<<<11x1xxxxxxxx", InstName.Ldrb,     InstEmit32.Ldrb,     OpCodeT32MemImm8.Create);
+            SetT32("111110001001xxxxxxxxxxxxxxxxxxxx", InstName.Ldrb,     InstEmit32.Ldrb,     OpCodeT32MemImm12.Create);
+            SetT32("111110000011xxxx<<<<10x1xxxxxxxx", InstName.Ldrh,     InstEmit32.Ldrh,     OpCodeT32MemImm8.Create);
+            SetT32("111110000011xxxx<<<<1100xxxxxxxx", InstName.Ldrh,     InstEmit32.Ldrh,     OpCodeT32MemImm8.Create);
+            SetT32("111110000011xxxx<<<<11x1xxxxxxxx", InstName.Ldrh,     InstEmit32.Ldrh,     OpCodeT32MemImm8.Create);
+            SetT32("111110001011xxxxxxxxxxxxxxxxxxxx", InstName.Ldrh,     InstEmit32.Ldrh,     OpCodeT32MemImm12.Create);
+            SetT32("111110010001xxxx<<<<10x1xxxxxxxx", InstName.Ldrsb,    InstEmit32.Ldrsb,    OpCodeT32MemImm8.Create);
+            SetT32("111110010001xxxx<<<<1100xxxxxxxx", InstName.Ldrsb,    InstEmit32.Ldrsb,    OpCodeT32MemImm8.Create);
+            SetT32("111110010001xxxx<<<<11x1xxxxxxxx", InstName.Ldrsb,    InstEmit32.Ldrsb,    OpCodeT32MemImm8.Create);
+            SetT32("111110011001xxxxxxxxxxxxxxxxxxxx", InstName.Ldrsb,    InstEmit32.Ldrsb,    OpCodeT32MemImm12.Create);
+            SetT32("111110010011xxxx<<<<10x1xxxxxxxx", InstName.Ldrsh,    InstEmit32.Ldrsh,    OpCodeT32MemImm8.Create);
+            SetT32("111110010011xxxx<<<<1100xxxxxxxx", InstName.Ldrsh,    InstEmit32.Ldrsh,    OpCodeT32MemImm8.Create);
+            SetT32("111110010011xxxx<<<<11x1xxxxxxxx", InstName.Ldrsh,    InstEmit32.Ldrsh,    OpCodeT32MemImm8.Create);
+            SetT32("111110011011xxxxxxxxxxxxxxxxxxxx", InstName.Ldrsh,    InstEmit32.Ldrsh,    OpCodeT32MemImm12.Create);
             SetT32("11101010010x11110xxxxxxxxxxxxxxx", InstName.Mov,      InstEmit32.Mov,      OpCodeT32AluRsImm.Create);
             SetT32("11110x00010x11110xxxxxxxxxxxxxxx", InstName.Mov,      InstEmit32.Mov,      OpCodeT32AluImm.Create);
             SetT32("11101010011x11110xxxxxxxxxxxxxxx", InstName.Mvn,      InstEmit32.Mvn,      OpCodeT32AluRsImm.Create);
@@ -1077,6 +1097,12 @@ namespace ARMeilleure.Decoders
             SetT32("11110x01110xxxxx0xxxxxxxxxxxxxxx", InstName.Rsb,      InstEmit32.Rsb,      OpCodeT32AluImm.Create);
             SetT32("11101011011xxxxx0xxxxxxxxxxxxxxx", InstName.Sbc,      InstEmit32.Sbc,      OpCodeT32AluRsImm.Create);
             SetT32("11110x01011xxxxx0xxxxxxxxxxxxxxx", InstName.Sbc,      InstEmit32.Sbc,      OpCodeT32AluImm.Create);
+            SetT32("111110000100xxxxxxxx1<<>xxxxxxxx", InstName.Str,      InstEmit32.Str,      OpCodeT32MemImm8.Create);
+            SetT32("111110001100xxxxxxxxxxxxxxxxxxxx", InstName.Str,      InstEmit32.Str,      OpCodeT32MemImm12.Create);
+            SetT32("111110000000xxxxxxxx1<<>xxxxxxxx", InstName.Strb,     InstEmit32.Strb,     OpCodeT32MemImm8.Create);
+            SetT32("111110001000xxxxxxxxxxxxxxxxxxxx", InstName.Strb,     InstEmit32.Strb,     OpCodeT32MemImm12.Create);
+            SetT32("111110000010xxxxxxxx1<<>xxxxxxxx", InstName.Strh,     InstEmit32.Strh,     OpCodeT32MemImm8.Create);
+            SetT32("111110001010xxxxxxxxxxxxxxxxxxxx", InstName.Strh,     InstEmit32.Strh,     OpCodeT32MemImm12.Create);
             SetT32("11101011101<xxxx0xxx<<<<xxxxxxxx", InstName.Sub,      InstEmit32.Sub,      OpCodeT32AluRsImm.Create);
             SetT32("11110x01101<xxxx0xxx<<<<xxxxxxxx", InstName.Sub,      InstEmit32.Sub,      OpCodeT32AluImm.Create);
             SetT32("111010101001xxxx0xxx1111xxxxxxxx", InstName.Teq,      InstEmit32.Teq,      OpCodeT32AluRsImm.Create);
-- 
cgit v1.2.3