Add AArch64 (64-bit ARM) target initial support

* src/Makefile.am (nobase_private_HEADERS): Add gcc/aarch64.h entry.
* src/atomic_ops.h: Include gcc/aarch64.h if __aarch64__.
* src/atomic_ops/sysdeps/gcc/aarch64.h: New file.

diff --git a/src/Makefile.am b/src/Makefile.am
index 8f187cf..9f8f555 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -48,6 +48,7 @@ nobase_private_HEADERS = atomic_ops/ao_version.h \
         \
           atomic_ops/sysdeps/armcc/arm_v6.h \
         \
+          atomic_ops/sysdeps/gcc/aarch64.h \
           atomic_ops/sysdeps/gcc/alpha.h \
           atomic_ops/sysdeps/gcc/arm.h \
           atomic_ops/sysdeps/gcc/avr32.h \

diff --git a/src/atomic_ops.h b/src/atomic_ops.h
index 7756c90..e468e5e 100644 (file)
--- a/src/atomic_ops.h
+++ b/src/atomic_ops.h
@@ -266,6 +266,10 @@
      || defined(__powerpc64__) || defined(__ppc64__)
 #   include "atomic_ops/sysdeps/gcc/powerpc.h"
 # endif /* __powerpc__ */
+# if defined(__aarch64__)
+#   include "atomic_ops/sysdeps/gcc/aarch64.h"
+#   define AO_CAN_EMUL_CAS
+# endif /* __aarch64__ */
 # if defined(__arm__)
 #   include "atomic_ops/sysdeps/gcc/arm.h"
 #   define AO_CAN_EMUL_CAS

diff --git a/src/atomic_ops/sysdeps/gcc/aarch64.h b/src/atomic_ops/sysdeps/gcc/aarch64.h
new file mode 100644 (file)
index 0000000..51e2ffc
--- /dev/null
+++ b/src/atomic_ops/sysdeps/gcc/aarch64.h
@@ -0,0 +1,184 @@
+/*
+ * Copyright (c) 1991-1994 by Xerox Corporation.  All rights reserved.
+ * Copyright (c) 1996-1999 by Silicon Graphics.  All rights reserved.
+ * Copyright (c) 1999-2003 by Hewlett-Packard Company. All rights reserved.
+ *
+ *
+ * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
+ * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
+ *
+ * Permission is hereby granted to use or copy this program
+ * for any purpose,  provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ */
+
+#include "../read_ordered.h"
+
+#include "../test_and_set_t_is_ao_t.h"
+
+AO_INLINE void
+AO_nop_full(void)
+{
+# ifndef AO_UNIPROCESSOR
+__sync_synchronize ();
+# endif
+}
+#define AO_HAVE_nop_full
+
+AO_INLINE AO_t
+AO_load(const volatile AO_t *addr)
+{
+  return  __atomic_load_n (addr, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_load
+
+AO_INLINE AO_t
+AO_load_acquire(const volatile AO_t *addr)
+{
+  return __atomic_load_n (addr, __ATOMIC_ACQUIRE);
+}
+#define AO_HAVE_load_acquire
+
+AO_INLINE void
+ AO_store(volatile AO_t *addr, AO_t value)
+{
+  __atomic_store_n(addr, value, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_store
+
+AO_INLINE void
+ AO_store_release(volatile AO_t *addr, AO_t value)
+{
+  __atomic_store_n(addr, value, __ATOMIC_RELEASE);
+}
+#define AO_HAVE_store_release
+
+AO_INLINE AO_TS_VAL_t
+AO_test_and_set(volatile AO_TS_t *addr)
+{
+    return __atomic_test_and_set(addr, __ATOMIC_RELAXED);
+}
+# define AO_HAVE_test_and_set
+
+AO_INLINE AO_TS_VAL_t
+AO_test_and_set_acquire(volatile AO_TS_t *addr)
+{
+    return __atomic_test_and_set(addr, __ATOMIC_ACQUIRE);
+}
+# define AO_HAVE_test_and_set_acquire
+
+AO_INLINE AO_TS_VAL_t
+AO_test_and_set_release(volatile AO_TS_t *addr)
+{
+    return __atomic_test_and_set(addr, __ATOMIC_RELEASE);
+}
+# define AO_HAVE_test_and_set_release
+
+AO_INLINE AO_TS_VAL_t
+AO_test_and_set_full(volatile AO_TS_t *addr)
+{
+    return __atomic_test_and_set(addr, __ATOMIC_SEQ_CST);
+}
+# define AO_HAVE_test_and_set_full
+
+AO_INLINE AO_t
+AO_fetch_and_add(volatile AO_t *p, AO_t incr)
+{
+  return __atomic_fetch_add(p, incr, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_fetch_and_add
+
+AO_INLINE AO_t
+AO_fetch_and_add_acquire(volatile AO_t *p, AO_t incr)
+{
+  return __atomic_fetch_add(p, incr, __ATOMIC_ACQUIRE);
+}
+#define AO_HAVE_fetch_and_add_acquire
+
+AO_INLINE AO_t
+AO_fetch_and_add_release(volatile AO_t *p, AO_t incr)
+{
+  return __atomic_fetch_add(p, incr, __ATOMIC_RELEASE);
+}
+#define AO_HAVE_fetch_and_add_release
+
+AO_INLINE AO_t
+AO_fetch_and_add_full(volatile AO_t *p, AO_t incr)
+{
+  return __atomic_fetch_add(p, incr, __ATOMIC_SEQ_CST);
+}
+#define AO_HAVE_fetch_and_add_full
+
+AO_INLINE AO_t
+AO_fetch_and_add1(volatile AO_t *p)
+{
+  return __atomic_fetch_add(p, 1, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_fetch_and_add1
+
+AO_INLINE AO_t
+AO_fetch_and_add1_acquire(volatile AO_t *p)
+{
+  return __atomic_fetch_add(p, 1, __ATOMIC_ACQUIRE);
+}
+#define AO_HAVE_fetch_and_add1_acquire
+
+AO_INLINE AO_t
+AO_fetch_and_add1_release(volatile AO_t *p)
+{
+  return __atomic_fetch_add(p, 1, __ATOMIC_RELEASE);
+}
+#define AO_HAVE_fetch_and_add1_release
+
+AO_INLINE AO_t
+AO_fetch_and_add1_full(volatile AO_t *p)
+{
+  return __atomic_fetch_add(p, 1, __ATOMIC_SEQ_CST);
+}
+#define AO_HAVE_fetch_and_add1_full
+
+AO_INLINE AO_t
+AO_fetch_and_sub1(volatile AO_t *p)
+{
+  return __atomic_fetch_sub(p, 1, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_fetch_and_sub1
+
+AO_INLINE AO_t
+AO_fetch_and_sub1_acquire(volatile AO_t *p)
+{
+  return __atomic_fetch_sub(p, 1, __ATOMIC_ACQUIRE);
+}
+#define AO_HAVE_fetch_and_sub1_acquire
+
+AO_INLINE AO_t
+AO_fetch_and_sub1_release(volatile AO_t *p)
+{
+  return __atomic_fetch_sub(p, 1, __ATOMIC_RELEASE);
+}
+#define AO_HAVE_fetch_and_sub1_release
+
+AO_INLINE AO_t
+AO_fetch_and_sub1_full(volatile AO_t *p)
+{
+  return __atomic_fetch_sub(p, 1, __ATOMIC_SEQ_CST);
+}
+#define AO_HAVE_fetch_and_sub1_full
+
+/* Returns nonzero if the comparison succeeded.  */
+AO_INLINE int
+AO_compare_and_swap(volatile AO_t *addr, AO_t old_val, AO_t new_val)
+{
+    return __sync_bool_compare_and_swap(addr, old_val, new_val);
+}
+# define AO_HAVE_compare_and_swap
+
+AO_INLINE AO_t
+AO_fetch_compare_and_swap(volatile AO_t *addr, AO_t old_val, AO_t new_val)
+{
+    return __sync_val_compare_and_swap(addr, old_val, new_val);
+}
+# define AO_HAVE_fetch_compare_and_swap