mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-14 07:10:05 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
/* Copyright (C) 2010-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.
|
|
|
|
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. If not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _ATOMIC_MACHINE_H
|
|
#define _ATOMIC_MACHINE_H 1
|
|
|
|
#include <stdint.h>
|
|
#include <sysdep.h>
|
|
|
|
/* Coldfire has no atomic compare-and-exchange operation, but the
|
|
kernel provides userspace atomicity operations. Use them. */
|
|
|
|
typedef int32_t atomic32_t;
|
|
typedef uint32_t uatomic32_t;
|
|
typedef int_fast32_t atomic_fast32_t;
|
|
typedef uint_fast32_t uatomic_fast32_t;
|
|
|
|
typedef intptr_t atomicptr_t;
|
|
typedef uintptr_t uatomicptr_t;
|
|
typedef intmax_t atomic_max_t;
|
|
typedef uintmax_t uatomic_max_t;
|
|
|
|
#define __HAVE_64B_ATOMICS 0
|
|
#define USE_ATOMIC_COMPILER_BUILTINS 0
|
|
|
|
/* XXX Is this actually correct? */
|
|
#define ATOMIC_EXCHANGE_USES_CAS 1
|
|
|
|
/* The only basic operation needed is compare and exchange. */
|
|
#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
|
|
({ \
|
|
/* Use temporary variables to workaround call-clobberness of \
|
|
the registers. */ \
|
|
__typeof (mem) _mem = mem; \
|
|
__typeof (oldval) _oldval = oldval; \
|
|
__typeof (newval) _newval = newval; \
|
|
register uint32_t _d0 asm ("d0") = SYS_ify (atomic_cmpxchg_32); \
|
|
register uint32_t *_a0 asm ("a0") = (uint32_t *) _mem; \
|
|
register uint32_t _d2 asm ("d2") = (uint32_t) _oldval; \
|
|
register uint32_t _d1 asm ("d1") = (uint32_t) _newval; \
|
|
\
|
|
asm ("trap #0" \
|
|
: "+d" (_d0), "+m" (*_a0) \
|
|
: "a" (_a0), "d" (_d2), "d" (_d1)); \
|
|
(__typeof (oldval)) _d0; \
|
|
})
|
|
|
|
# define atomic_full_barrier() \
|
|
(INTERNAL_SYSCALL_CALL (atomic_barrier), (void) 0)
|
|
|
|
#endif
|