From cee712105850ac3385cd0091a923438167433f9f Mon Sep 17 00:00:00 2001
From: TSR Berry <20988865+TSRBerry@users.noreply.github.com>
Date: Sat, 8 Apr 2023 01:22:00 +0200
Subject: Move solution and projects to src

---
 src/ARMeilleure/Native/JitSupportDarwin.cs              |  13 +++++++++++++
 .../Native/libs/libarmeilleure-jitsupport.dylib         | Bin 0 -> 33564 bytes
 src/ARMeilleure/Native/macos_jit_support/Makefile       |   8 ++++++++
 src/ARMeilleure/Native/macos_jit_support/support.c      |  14 ++++++++++++++
 4 files changed, 35 insertions(+)
 create mode 100644 src/ARMeilleure/Native/JitSupportDarwin.cs
 create mode 100644 src/ARMeilleure/Native/libs/libarmeilleure-jitsupport.dylib
 create mode 100644 src/ARMeilleure/Native/macos_jit_support/Makefile
 create mode 100644 src/ARMeilleure/Native/macos_jit_support/support.c

(limited to 'src/ARMeilleure/Native')

diff --git a/src/ARMeilleure/Native/JitSupportDarwin.cs b/src/ARMeilleure/Native/JitSupportDarwin.cs
new file mode 100644
index 00000000..7d6a8634
--- /dev/null
+++ b/src/ARMeilleure/Native/JitSupportDarwin.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+
+namespace ARMeilleure.Native
+{
+    [SupportedOSPlatform("macos")]
+    public static partial class JitSupportDarwin
+    {
+        [LibraryImport("libarmeilleure-jitsupport", EntryPoint = "armeilleure_jit_memcpy")]
+        public static partial void Copy(IntPtr dst, IntPtr src, ulong n);
+    }
+}
diff --git a/src/ARMeilleure/Native/libs/libarmeilleure-jitsupport.dylib b/src/ARMeilleure/Native/libs/libarmeilleure-jitsupport.dylib
new file mode 100644
index 00000000..c65b0a4e
Binary files /dev/null and b/src/ARMeilleure/Native/libs/libarmeilleure-jitsupport.dylib differ
diff --git a/src/ARMeilleure/Native/macos_jit_support/Makefile b/src/ARMeilleure/Native/macos_jit_support/Makefile
new file mode 100644
index 00000000..d6da35d5
--- /dev/null
+++ b/src/ARMeilleure/Native/macos_jit_support/Makefile
@@ -0,0 +1,8 @@
+NAME = libarmeilleure-jitsupport.dylib
+
+all: ${NAME}
+
+${NAME}:
+	clang -O3 -dynamiclib support.c -o ${NAME}
+clean:
+	rm -f ${NAME}
diff --git a/src/ARMeilleure/Native/macos_jit_support/support.c b/src/ARMeilleure/Native/macos_jit_support/support.c
new file mode 100644
index 00000000..1b13d906
--- /dev/null
+++ b/src/ARMeilleure/Native/macos_jit_support/support.c
@@ -0,0 +1,14 @@
+#include <stddef.h>
+#include <string.h>
+#include <pthread.h>
+
+#include <libkern/OSCacheControl.h>
+
+void armeilleure_jit_memcpy(void *dst, const void *src, size_t n) {
+    pthread_jit_write_protect_np(0);
+    memcpy(dst, src, n);
+    pthread_jit_write_protect_np(1);
+
+    // Ensure that the instruction cache for this range is invalidated.
+    sys_icache_invalidate(dst, n);
+}
-- 
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