X18 should only be reserved for windows (#12)

Author: ZacWalk

gcc/config/aarch64/aarch64-coff.h

@@ -35,7 +35,6 @@
 #undef LONG_TYPE_SIZE
 #define LONG_TYPE_SIZE 32
 
-#define TARGET_64BIT_MS_ABI 1
 #define TARGET_SEH 1
 
 #ifndef ASM_GENERATE_INTERNAL_LABEL

libgcc/config/i386/cygming-crtend.c

@@ -58,7 +58,14 @@ extern void __gcc_deregister_frame (void);
 
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wprio-ctor-dtor"
-static void register_frame_ctor (void); // TODO __attribute__ ((constructor (0)));
+
+#ifdef __aarch64__
+/* constructor not yet enabled for aarch64 */
+static void register_frame_ctor (void);
+#else
+static void register_frame_ctor (void) __attribute__ ((constructor (0)));
+#endif
+
 #pragma GCC diagnostic pop
 
 static void
@@ -70,7 +77,14 @@ register_frame_ctor (void)
 #if !DEFAULT_USE_CXA_ATEXIT
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wprio-ctor-dtor"
-static void deregister_frame_dtor (void); // TODO  __attribute__ ((destructor (0)));
+
+#ifdef __aarch64__
+/* destructor not yet enabled for aarch64 */
+static void deregister_frame_dtor (void);
+#else
+static void deregister_frame_dtor (void) __attribute__ ((destructor (0)));
+#endif
+
 #pragma GCC diagnostic pop
 
 static void