From 5e0f8e873857ce3ca3f532aff0936beb28e412c8 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 10 Jan 2023 19:16:59 -0300
Subject: Implement JIT Arm64 backend (#4114)

* Implement JIT Arm64 backend

* PPTC version bump

* Address some feedback from Arm64 JIT PR

* Address even more PR feedback

* Remove unused IsPageAligned function

* Sync Qc flag before calls

* Fix comment and remove unused enum

* Address riperiperi PR feedback

* Delete Breakpoint IR instruction that was only implemented for Arm64
---
 ARMeilleure/Native/macos_jit_support/Makefile  |  8 ++++++++
 ARMeilleure/Native/macos_jit_support/support.c | 14 ++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 ARMeilleure/Native/macos_jit_support/Makefile
 create mode 100644 ARMeilleure/Native/macos_jit_support/support.c

(limited to 'ARMeilleure/Native/macos_jit_support')

diff --git a/ARMeilleure/Native/macos_jit_support/Makefile b/ARMeilleure/Native/macos_jit_support/Makefile
new file mode 100644
index 00000000..d6da35d5
--- /dev/null
+++ b/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/ARMeilleure/Native/macos_jit_support/support.c b/ARMeilleure/Native/macos_jit_support/support.c
new file mode 100644
index 00000000..1b13d906
--- /dev/null
+++ b/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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