diff options
| -rw-r--r-- | lib/libcompiler_rt/Makefile | 1 | ||||
| -rw-r--r-- | lib/libcompiler_rt/__sync_synchronize.c | 47 |
2 files changed, 48 insertions, 0 deletions
diff --git a/lib/libcompiler_rt/Makefile b/lib/libcompiler_rt/Makefile index c75ae07..83c4ea3 100644 --- a/lib/libcompiler_rt/Makefile +++ b/lib/libcompiler_rt/Makefile @@ -164,6 +164,7 @@ SRCF+= __sync_fetch_and_add_4 \ __sync_fetch_and_sub_4 \ __sync_fetch_and_xor_4 \ __sync_lock_test_and_set_4 \ + __sync_synchronize \ __sync_val_compare_and_swap_4 .endif .if ${MACHINE_ARCH:Mmips64*} != "" diff --git a/lib/libcompiler_rt/__sync_synchronize.c b/lib/libcompiler_rt/__sync_synchronize.c new file mode 100644 index 0000000..51e08db --- /dev/null +++ b/lib/libcompiler_rt/__sync_synchronize.c @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <machine/atomic.h> + +#ifdef __clang__ +static void +atomic_func(void) +#else +void +__sync_synchronize(void) +#endif +{ + + mb(); +} + +#ifdef __clang__ +__strong_reference(atomic_func, __sync_synchronize); +#endif |
