diff options
| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-09 20:40:56 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-02-09 20:40:56 +0000 |
| commit | 20db34bb0fe9ef2a39dffc08d0b7c62a7873e048 (patch) | |
| tree | 6fd9de8c6d16c00cb6faaa80e80f6cf3b2af51fa /libjava | |
| parent | 38ac16ec87cf5900fa74f102289589156a217660 (diff) | |
| download | gcc-20db34bb0fe9ef2a39dffc08d0b7c62a7873e048.tar.gz | |
* sysdep/alpha/locks.h (read_barrier): New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@121774 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libjava')
| -rw-r--r-- | libjava/ChangeLog | 4 | ||||
| -rw-r--r-- | libjava/sysdep/alpha/locks.h | 8 |
2 files changed, 12 insertions, 0 deletions
diff --git a/libjava/ChangeLog b/libjava/ChangeLog index 7f38c88ada7..49b0567e673 100644 --- a/libjava/ChangeLog +++ b/libjava/ChangeLog @@ -1,3 +1,7 @@ +2007-02-09 Richard Henderson <rth@redhat.com> + + * sysdep/alpha/locks.h (read_barrier): New. + 2007-02-09 Keith Seitz <keiths@redhat.com> * gnu/classpath/jdwp/VMVirtualMachine.java diff --git a/libjava/sysdep/alpha/locks.h b/libjava/sysdep/alpha/locks.h index c5f7f4993e6..a6b4394080b 100644 --- a/libjava/sysdep/alpha/locks.h +++ b/libjava/sysdep/alpha/locks.h @@ -50,6 +50,14 @@ compare_and_swap_release(volatile obj_addr_t *addr, return compare_and_swap(addr, old, new_val); } +// Ensure that subsequent instructions do not execute on stale +// data that was loaded from memory before the barrier. +inline static void +read_barrier() +{ + __asm__ __volatile__("mb" : : : "memory"); +} + // Ensure that prior stores to memory are completed with respect to other // processors. inline static void |