Update the stub and callback code to handle lazy compilation. The stub
is re-written by the callback to branch directly to the compiled code
in future invocations.
Added back in range-based memory permission functions for the updating of
the stub on Darwin.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57846 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Unix/Memory.inc b/lib/System/Unix/Memory.inc
index 646311d..cfc5a68 100644
--- a/lib/System/Unix/Memory.inc
+++ b/lib/System/Unix/Memory.inc
@@ -127,3 +127,24 @@
#endif
}
+bool llvm::sys::Memory::setRangeWritable(const void *Addr, size_t Size) {
+#if defined(__APPLE__) && defined(__arm__)
+ kern_return_t kr = vm_protect(mach_task_self(), (vm_address_t)Addr,
+ (vm_size_t)Size, 0,
+ VM_PROT_READ | VM_PROT_WRITE);
+ return KERN_SUCCESS == kr;
+#else
+ return true;
+#endif
+}
+
+bool llvm::sys::Memory::setRangeExecutable(const void *Addr, size_t Size) {
+#if defined(__APPLE__) && defined(__arm__)
+ kern_return_t kr = vm_protect(mach_task_self(), (vm_address_t)Addr,
+ (vm_size_t)Size, 0,
+ VM_PROT_READ | VM_PROT_EXECUTE | VM_PROT_COPY);
+ return KERN_SUCCESS == kr;
+#else
+ return true;
+#endif
+}