Implement a new JIT for Arm devices (#6057)

* Implement a new JIT for Arm devices

* Auto-format

* Make a lot of Assembler members read-only

* More read-only

* Fix more warnings

* ObjectDisposedException.ThrowIf

* New JIT cache for platforms that enforce W^X, currently unused

* Remove unused using

* Fix assert

* Pass memory manager type around

* Safe memory manager mode support + other improvements

* Actual safe memory manager mode masking support

* PR feedback

1 files changed, 103 insertions, 0 deletions

diff --git a/src/Ryujinx.Cpu/LightningJit/Arm32/Target/Arm64/InstEmitBit.cs b/src/Ryujinx.Cpu/LightningJit/Arm32/Target/Arm64/InstEmitBit.cs
new file mode 100644
index 00000000..3f91d45f
--- /dev/null
+++ b/src/Ryujinx.Cpu/LightningJit/Arm32/Target/Arm64/InstEmitBit.cs
@@ -0,0 +1,103 @@
+using Ryujinx.Cpu.LightningJit.CodeGen;
+
+namespace Ryujinx.Cpu.LightningJit.Arm32.Target.Arm64
+{
+    static class InstEmitBit
+    {
+        public static void Bfc(CodeGenContext context, uint rd, uint lsb, uint msb)
+        {
+            // This is documented as "unpredictable".
+            if (msb < lsb)
+            {
+                return;
+            }
+
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+
+            context.Arm64Assembler.Bfc(rdOperand, (int)lsb, (int)(msb - lsb + 1));
+        }
+
+        public static void Bfi(CodeGenContext context, uint rd, uint rn, uint lsb, uint msb)
+        {
+            // This is documented as "unpredictable".
+            if (msb < lsb)
+            {
+                return;
+            }
+
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rnOperand = InstEmitCommon.GetInputGpr(context, rn);
+
+            context.Arm64Assembler.Bfi(rdOperand, rnOperand, (int)lsb, (int)(msb - lsb + 1));
+        }
+
+        public static void Clz(CodeGenContext context, uint rd, uint rm)
+        {
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rmOperand = InstEmitCommon.GetInputGpr(context, rm);
+
+            context.Arm64Assembler.Clz(rdOperand, rmOperand);
+        }
+
+        public static void Rbit(CodeGenContext context, uint rd, uint rm)
+        {
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rmOperand = InstEmitCommon.GetInputGpr(context, rm);
+
+            context.Arm64Assembler.Rbit(rdOperand, rmOperand);
+        }
+
+        public static void Rev(CodeGenContext context, uint rd, uint rm)
+        {
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rmOperand = InstEmitCommon.GetInputGpr(context, rm);
+
+            context.Arm64Assembler.Rev(rdOperand, rmOperand);
+        }
+
+        public static void Rev16(CodeGenContext context, uint rd, uint rm)
+        {
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rmOperand = InstEmitCommon.GetInputGpr(context, rm);
+
+            context.Arm64Assembler.Rev16(rdOperand, rmOperand);
+        }
+
+        public static void Revsh(CodeGenContext context, uint rd, uint rm)
+        {
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rmOperand = InstEmitCommon.GetInputGpr(context, rm);
+
+            context.Arm64Assembler.Rev16(rdOperand, rmOperand);
+            context.Arm64Assembler.Sxth(rdOperand, rdOperand);
+        }
+
+        public static void Sbfx(CodeGenContext context, uint rd, uint rn, uint lsb, uint widthMinus1)
+        {
+            // This is documented as "unpredictable".
+            if (lsb + widthMinus1 > 31)
+            {
+                return;
+            }
+
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rnOperand = InstEmitCommon.GetInputGpr(context, rn);
+
+            context.Arm64Assembler.Sbfx(rdOperand, rnOperand, (int)lsb, (int)widthMinus1 + 1);
+        }
+
+        public static void Ubfx(CodeGenContext context, uint rd, uint rn, uint lsb, uint widthMinus1)
+        {
+            // This is documented as "unpredictable".
+            if (lsb + widthMinus1 > 31)
+            {
+                return;
+            }
+
+            Operand rdOperand = InstEmitCommon.GetOutputGpr(context, rd);
+            Operand rnOperand = InstEmitCommon.GetInputGpr(context, rn);
+
+            context.Arm64Assembler.Ubfx(rdOperand, rnOperand, (int)lsb, (int)widthMinus1 + 1);
+        }
+    }
+}