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diff --git a/graphics/asymptote/libatomic_ops/src/atomic_ops/sysdeps/gcc/generic-small.h b/graphics/asymptote/libatomic_ops/src/atomic_ops/sysdeps/gcc/generic-small.h
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@@ -0,0 +1,632 @@
+/*
+ * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
+ * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved.
+ * Copyright (c) 2003-2011 Hewlett-Packard Development Company, L.P.
+ *
+ *
+ * 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.
+ *
+ */
+
+#if !defined(AO_GCC_HAVE_char_SYNC_CAS) || !defined(AO_PREFER_GENERALIZED)
+
+AO_INLINE unsigned/**/char
+AO_char_load(const volatile unsigned/**/char *addr)
+{
+ return __atomic_load_n(addr, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_char_load
+
+AO_INLINE unsigned/**/char
+AO_char_load_acquire(const volatile unsigned/**/char *addr)
+{
+ return __atomic_load_n(addr, __ATOMIC_ACQUIRE);
+}
+#define AO_HAVE_char_load_acquire
+
+/* char_load_read is defined using load and nop_read. */
+/* TODO: Map it to ACQUIRE. We should be strengthening the read and */
+/* write stuff to the more general acquire/release versions. It almost */
+/* never makes a difference and is much less error-prone. */
+
+/* char_load_full is generalized using load and nop_full. */
+/* TODO: Map it to SEQ_CST and clarify the documentation. */
+
+/* TODO: Map load_dd_acquire_read to ACQUIRE. Ideally it should be */
+/* mapped to CONSUME, but the latter is currently broken. */
+
+/* char_store_full definition is omitted similar to load_full reason. */
+
+/* TODO: Map store_write to RELEASE. */
+
+#ifndef AO_SKIPATOMIC_char_store
+ AO_INLINE void
+ AO_char_store(volatile unsigned/**/char *addr, unsigned/**/char value)
+ {
+ __atomic_store_n(addr, value, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_char_store
+#endif
+
+#ifndef AO_SKIPATOMIC_char_store_release
+ AO_INLINE void
+ AO_char_store_release(volatile unsigned/**/char *addr, unsigned/**/char value)
+ {
+ __atomic_store_n(addr, value, __ATOMIC_RELEASE);
+ }
+# define AO_HAVE_char_store_release
+#endif
+
+#endif /* !AO_GCC_HAVE_char_SYNC_CAS || !AO_PREFER_GENERALIZED */
+
+#ifdef AO_GCC_HAVE_char_SYNC_CAS
+
+ AO_INLINE unsigned/**/char
+ AO_char_fetch_compare_and_swap(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr,
+ &old_val /* p_expected */,
+ new_val /* desired */,
+ 0 /* is_weak: false */,
+ __ATOMIC_RELAXED /* success */,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_char_fetch_compare_and_swap
+
+ AO_INLINE unsigned/**/char
+ AO_char_fetch_compare_and_swap_acquire(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ return old_val;
+ }
+# define AO_HAVE_char_fetch_compare_and_swap_acquire
+
+ AO_INLINE unsigned/**/char
+ AO_char_fetch_compare_and_swap_release(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_char_fetch_compare_and_swap_release
+
+ AO_INLINE unsigned/**/char
+ AO_char_fetch_compare_and_swap_full(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_char_fetch_compare_and_swap_full
+
+# ifndef AO_GENERALIZE_ASM_BOOL_CAS
+ AO_INLINE int
+ AO_char_compare_and_swap(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_char_compare_and_swap
+
+ AO_INLINE int
+ AO_char_compare_and_swap_acquire(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ }
+# define AO_HAVE_char_compare_and_swap_acquire
+
+ AO_INLINE int
+ AO_char_compare_and_swap_release(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ }
+# define AO_HAVE_char_compare_and_swap_release
+
+ AO_INLINE int
+ AO_char_compare_and_swap_full(volatile unsigned/**/char *addr,
+ unsigned/**/char old_val, unsigned/**/char new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ }
+# define AO_HAVE_char_compare_and_swap_full
+
+# endif /* !AO_GENERALIZE_ASM_BOOL_CAS */
+
+#endif /* AO_GCC_HAVE_char_SYNC_CAS */
+/*
+ * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
+ * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved.
+ * Copyright (c) 2003-2011 Hewlett-Packard Development Company, L.P.
+ *
+ *
+ * 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.
+ *
+ */
+
+#if !defined(AO_GCC_HAVE_short_SYNC_CAS) || !defined(AO_PREFER_GENERALIZED)
+
+AO_INLINE unsigned/**/short
+AO_short_load(const volatile unsigned/**/short *addr)
+{
+ return __atomic_load_n(addr, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_short_load
+
+AO_INLINE unsigned/**/short
+AO_short_load_acquire(const volatile unsigned/**/short *addr)
+{
+ return __atomic_load_n(addr, __ATOMIC_ACQUIRE);
+}
+#define AO_HAVE_short_load_acquire
+
+/* short_load_read is defined using load and nop_read. */
+/* TODO: Map it to ACQUIRE. We should be strengthening the read and */
+/* write stuff to the more general acquire/release versions. It almost */
+/* never makes a difference and is much less error-prone. */
+
+/* short_load_full is generalized using load and nop_full. */
+/* TODO: Map it to SEQ_CST and clarify the documentation. */
+
+/* TODO: Map load_dd_acquire_read to ACQUIRE. Ideally it should be */
+/* mapped to CONSUME, but the latter is currently broken. */
+
+/* short_store_full definition is omitted similar to load_full reason. */
+
+/* TODO: Map store_write to RELEASE. */
+
+#ifndef AO_SKIPATOMIC_short_store
+ AO_INLINE void
+ AO_short_store(volatile unsigned/**/short *addr, unsigned/**/short value)
+ {
+ __atomic_store_n(addr, value, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_short_store
+#endif
+
+#ifndef AO_SKIPATOMIC_short_store_release
+ AO_INLINE void
+ AO_short_store_release(volatile unsigned/**/short *addr, unsigned/**/short value)
+ {
+ __atomic_store_n(addr, value, __ATOMIC_RELEASE);
+ }
+# define AO_HAVE_short_store_release
+#endif
+
+#endif /* !AO_GCC_HAVE_short_SYNC_CAS || !AO_PREFER_GENERALIZED */
+
+#ifdef AO_GCC_HAVE_short_SYNC_CAS
+
+ AO_INLINE unsigned/**/short
+ AO_short_fetch_compare_and_swap(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr,
+ &old_val /* p_expected */,
+ new_val /* desired */,
+ 0 /* is_weak: false */,
+ __ATOMIC_RELAXED /* success */,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_short_fetch_compare_and_swap
+
+ AO_INLINE unsigned/**/short
+ AO_short_fetch_compare_and_swap_acquire(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ return old_val;
+ }
+# define AO_HAVE_short_fetch_compare_and_swap_acquire
+
+ AO_INLINE unsigned/**/short
+ AO_short_fetch_compare_and_swap_release(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_short_fetch_compare_and_swap_release
+
+ AO_INLINE unsigned/**/short
+ AO_short_fetch_compare_and_swap_full(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_short_fetch_compare_and_swap_full
+
+# ifndef AO_GENERALIZE_ASM_BOOL_CAS
+ AO_INLINE int
+ AO_short_compare_and_swap(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_short_compare_and_swap
+
+ AO_INLINE int
+ AO_short_compare_and_swap_acquire(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ }
+# define AO_HAVE_short_compare_and_swap_acquire
+
+ AO_INLINE int
+ AO_short_compare_and_swap_release(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ }
+# define AO_HAVE_short_compare_and_swap_release
+
+ AO_INLINE int
+ AO_short_compare_and_swap_full(volatile unsigned/**/short *addr,
+ unsigned/**/short old_val, unsigned/**/short new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ }
+# define AO_HAVE_short_compare_and_swap_full
+
+# endif /* !AO_GENERALIZE_ASM_BOOL_CAS */
+
+#endif /* AO_GCC_HAVE_short_SYNC_CAS */
+/*
+ * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
+ * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved.
+ * Copyright (c) 2003-2011 Hewlett-Packard Development Company, L.P.
+ *
+ *
+ * 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.
+ *
+ */
+
+#if !defined(AO_GCC_HAVE_int_SYNC_CAS) || !defined(AO_PREFER_GENERALIZED)
+
+AO_INLINE unsigned
+AO_int_load(const volatile unsigned *addr)
+{
+ return __atomic_load_n(addr, __ATOMIC_RELAXED);
+}
+#define AO_HAVE_int_load
+
+AO_INLINE unsigned
+AO_int_load_acquire(const volatile unsigned *addr)
+{
+ return __atomic_load_n(addr, __ATOMIC_ACQUIRE);
+}
+#define AO_HAVE_int_load_acquire
+
+/* int_load_read is defined using load and nop_read. */
+/* TODO: Map it to ACQUIRE. We should be strengthening the read and */
+/* write stuff to the more general acquire/release versions. It almost */
+/* never makes a difference and is much less error-prone. */
+
+/* int_load_full is generalized using load and nop_full. */
+/* TODO: Map it to SEQ_CST and clarify the documentation. */
+
+/* TODO: Map load_dd_acquire_read to ACQUIRE. Ideally it should be */
+/* mapped to CONSUME, but the latter is currently broken. */
+
+/* int_store_full definition is omitted similar to load_full reason. */
+
+/* TODO: Map store_write to RELEASE. */
+
+#ifndef AO_SKIPATOMIC_int_store
+ AO_INLINE void
+ AO_int_store(volatile unsigned *addr, unsigned value)
+ {
+ __atomic_store_n(addr, value, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_int_store
+#endif
+
+#ifndef AO_SKIPATOMIC_int_store_release
+ AO_INLINE void
+ AO_int_store_release(volatile unsigned *addr, unsigned value)
+ {
+ __atomic_store_n(addr, value, __ATOMIC_RELEASE);
+ }
+# define AO_HAVE_int_store_release
+#endif
+
+#endif /* !AO_GCC_HAVE_int_SYNC_CAS || !AO_PREFER_GENERALIZED */
+
+#ifdef AO_GCC_HAVE_int_SYNC_CAS
+
+ AO_INLINE unsigned
+ AO_int_fetch_compare_and_swap(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr,
+ &old_val /* p_expected */,
+ new_val /* desired */,
+ 0 /* is_weak: false */,
+ __ATOMIC_RELAXED /* success */,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_int_fetch_compare_and_swap
+
+ AO_INLINE unsigned
+ AO_int_fetch_compare_and_swap_acquire(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ return old_val;
+ }
+# define AO_HAVE_int_fetch_compare_and_swap_acquire
+
+ AO_INLINE unsigned
+ AO_int_fetch_compare_and_swap_release(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_int_fetch_compare_and_swap_release
+
+ AO_INLINE unsigned
+ AO_int_fetch_compare_and_swap_full(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_int_fetch_compare_and_swap_full
+
+# ifndef AO_GENERALIZE_ASM_BOOL_CAS
+ AO_INLINE int
+ AO_int_compare_and_swap(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_int_compare_and_swap
+
+ AO_INLINE int
+ AO_int_compare_and_swap_acquire(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ }
+# define AO_HAVE_int_compare_and_swap_acquire
+
+ AO_INLINE int
+ AO_int_compare_and_swap_release(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ }
+# define AO_HAVE_int_compare_and_swap_release
+
+ AO_INLINE int
+ AO_int_compare_and_swap_full(volatile unsigned *addr,
+ unsigned old_val, unsigned new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ }
+# define AO_HAVE_int_compare_and_swap_full
+
+# endif /* !AO_GENERALIZE_ASM_BOOL_CAS */
+
+#endif /* AO_GCC_HAVE_int_SYNC_CAS */
+/*
+ * Copyright (c) 1991-1994 by Xerox Corporation. All rights reserved.
+ * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved.
+ * Copyright (c) 2003-2011 Hewlett-Packard Development Company, L.P.
+ *
+ *
+ * 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.
+ *
+ */
+
+#if !defined(AO_GCC_HAVE_SYNC_CAS) || !defined(AO_PREFER_GENERALIZED)
+
+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
+
+/* load_read is defined using load and nop_read. */
+/* TODO: Map it to ACQUIRE. We should be strengthening the read and */
+/* write stuff to the more general acquire/release versions. It almost */
+/* never makes a difference and is much less error-prone. */
+
+/* load_full is generalized using load and nop_full. */
+/* TODO: Map it to SEQ_CST and clarify the documentation. */
+
+/* TODO: Map load_dd_acquire_read to ACQUIRE. Ideally it should be */
+/* mapped to CONSUME, but the latter is currently broken. */
+
+/* store_full definition is omitted similar to load_full reason. */
+
+/* TODO: Map store_write to RELEASE. */
+
+#ifndef AO_SKIPATOMIC_store
+ AO_INLINE void
+ AO_store(volatile AO_t *addr, AO_t value)
+ {
+ __atomic_store_n(addr, value, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_store
+#endif
+
+#ifndef AO_SKIPATOMIC_store_release
+ 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
+#endif
+
+#endif /* !AO_GCC_HAVE_SYNC_CAS || !AO_PREFER_GENERALIZED */
+
+#ifdef AO_GCC_HAVE_SYNC_CAS
+
+ AO_INLINE AO_t
+ AO_fetch_compare_and_swap(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr,
+ &old_val /* p_expected */,
+ new_val /* desired */,
+ 0 /* is_weak: false */,
+ __ATOMIC_RELAXED /* success */,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_fetch_compare_and_swap
+
+ AO_INLINE AO_t
+ AO_fetch_compare_and_swap_acquire(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ return old_val;
+ }
+# define AO_HAVE_fetch_compare_and_swap_acquire
+
+ AO_INLINE AO_t
+ AO_fetch_compare_and_swap_release(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_fetch_compare_and_swap_release
+
+ AO_INLINE AO_t
+ AO_fetch_compare_and_swap_full(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ (void)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ return old_val;
+ }
+# define AO_HAVE_fetch_compare_and_swap_full
+
+# ifndef AO_GENERALIZE_ASM_BOOL_CAS
+ AO_INLINE int
+ AO_compare_and_swap(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+ }
+# define AO_HAVE_compare_and_swap
+
+ AO_INLINE int
+ AO_compare_and_swap_acquire(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+ }
+# define AO_HAVE_compare_and_swap_acquire
+
+ AO_INLINE int
+ AO_compare_and_swap_release(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_RELEASE,
+ __ATOMIC_RELAXED /* failure */);
+ }
+# define AO_HAVE_compare_and_swap_release
+
+ AO_INLINE int
+ AO_compare_and_swap_full(volatile AO_t *addr,
+ AO_t old_val, AO_t new_val)
+ {
+ return (int)__atomic_compare_exchange_n(addr, &old_val, new_val, 0,
+ __ATOMIC_ACQ_REL,
+ __ATOMIC_ACQUIRE /* failure */);
+ }
+# define AO_HAVE_compare_and_swap_full
+
+# endif /* !AO_GENERALIZE_ASM_BOOL_CAS */
+
+#endif /* AO_GCC_HAVE_SYNC_CAS */