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| author | sh <sh@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-09-23 06:58:00 +0000 |
|---|---|---|
| committer | sh <sh@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-09-23 06:58:00 +0000 |
| commit | 9578c8c3fb63953c4d6552dda4561792406a50e7 (patch) | |
| tree | ae778f7dbfc0250868fdd5d946e22bf5d9006a85 /libstdc++-v3/config | |
| parent | 55409ac59199967be5a8d34ac1dfa0f76d278bac (diff) | |
| download | gcc-9578c8c3fb63953c4d6552dda4561792406a50e7.tar.gz | |
[RTEMS] Always use atomic builtins for libstdc++
libstdc++-v3/
* config/cpu/m68k/atomicity.h: Adjust comment.
* acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Honor
explicit atomicity_dir setup via configure.host.
* configure.host (rtems-*): Set atomicity_dir.
* configure: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240387 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3/config')
| -rw-r--r-- | libstdc++-v3/config/cpu/m68k/atomicity.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libstdc++-v3/config/cpu/m68k/atomicity.h b/libstdc++-v3/config/cpu/m68k/atomicity.h index f4213302424..a9ddc6ba3bf 100644 --- a/libstdc++-v3/config/cpu/m68k/atomicity.h +++ b/libstdc++-v3/config/cpu/m68k/atomicity.h @@ -48,6 +48,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION } #elif defined(__rtems__) + // This code is only provided for reference. RTEMS uses now the atomic + // builtins and libatomic. See configure.host. + // // TAS/JBNE is unsafe on systems with strict priority-based scheduling. // Disable interrupts, which we can do only from supervisor mode. _Atomic_word |