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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-08-30 10:33:15 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-09-21 11:34:54 -0300 |
| commit | a7d53833280541daa93fedb13c19aa6f1bf49f99 (patch) | |
| tree | 7777fcf768621ff9c42d9d0ddacd6891f45aff73 /sysdeps/generic | |
| parent | dee4146cec2c73a131840efbae73bb1026f61d8e (diff) | |
| download | glibc-a7d53833280541daa93fedb13c19aa6f1bf49f99.zip glibc-a7d53833280541daa93fedb13c19aa6f1bf49f99.tar.gz glibc-a7d53833280541daa93fedb13c19aa6f1bf49f99.tar.bz2 | |
m68k: Enforce 4-byte alignment on internal locks (BZ #29537)
A new internal definition, __LIBC_LOCK_ALIGNMENT, is used to force
the 4-byte alignment only for m68k, other architecture keep the
natural alignment of the type used internally (and hppa does not
require 16-byte alignment for kernel-assisted CAS).
Reviewed-by: Florian Weimer <fweimer@redhat.com>
(cherry picked from commit aeb4d2e9815d459e2640a31f5abb8ef803830107)
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/libc-lock-arch.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sysdeps/generic/libc-lock-arch.h b/sysdeps/generic/libc-lock-arch.h new file mode 100644 index 0000000..4713b30 --- /dev/null +++ b/sysdeps/generic/libc-lock-arch.h @@ -0,0 +1,25 @@ +/* Private libc-internal arch-specific definitions. Generic version. + Copyright (C) 2022 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, see <https://www.gnu.org/licenses/>. */ + +#ifndef _LIBC_LOCK_ARCH_H +#define _LIBC_LOCK_ARCH_H + +/* The default definition uses the natural alignment from the lock type. */ +#define __LIBC_LOCK_ALIGNMENT + +#endif |