diff options
| author | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2015-12-28 12:24:43 -0200 |
|---|---|---|
| committer | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2016-01-08 17:47:33 -0200 |
| commit | 42bf1c897170ff951c7fd0ee9da25f97ff787396 (patch) | |
| tree | 3e69cd2d5201944482407b86b4854fe75ab34f12 /ChangeLog | |
| parent | bc49a7afd38c1bd00f0ad9fd6592a5959d5ba72e (diff) | |
powerpc: Enforce compiler barriers on hardware transactions
Work around a GCC behavior with hardware transactional memory built-ins.
GCC doesn't treat the PowerPC transactional built-ins as compiler
barriers, moving instructions past the transaction boundaries and
altering their atomicity.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -1,3 +1,15 @@ +2016-01-08 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> + + * sysdeps/unix/sysv/linux/powerpc/htm.h (__libc_tbegin, + __libc_tabort, __libc_tend): New wrappers that enforce compiler + barriers to their respective compiler built-ins. + * sysdeps/powerpc/nptl/elide.h (__get_new_count, ELIDE_LOCK, + ELIDE_TRYLOCK, __elide_unlock): Use the new wrappers. + * sysdeps/powerpc/sysdep.h: Likewise. + * sysdeps/unix/sysv/linux/powerpc/elision-lock.c: Likewise. + * sysdeps/unix/sysv/linux/powerpc/elision-trylock.c: Likewise. + * sysdeps/unix/sysv/linux/powerpc/elision-unlock.c: Likewise. + 2016-01-08 Marko Myllynen <myllynen@redhat.com> * scripts/config.guess: Revert previous shebang change. |