mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
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
96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/* Low-level functions for atomic operations. Nios II version.
|
|
Copyright (C) 2012-2021 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. If not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _NIOS2_ATOMIC_MACHINE_H
|
|
#define _NIOS2_ATOMIC_MACHINE_H 1
|
|
|
|
#include <stdint.h>
|
|
|
|
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
|
|
|
|
#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
|
|
(abort (), (__typeof (*mem)) 0)
|
|
#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
|
|
(abort (), (__typeof (*mem)) 0)
|
|
#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
|
|
(abort (), (__typeof (*mem)) 0)
|
|
|
|
#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \
|
|
(abort (), 0)
|
|
#define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \
|
|
(abort (), 0)
|
|
#define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval) \
|
|
(abort (), 0)
|
|
|
|
#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
|
|
({ \
|
|
register int r2 asm ("r2"); \
|
|
register int* r4 asm ("r4") = (int*)(mem); \
|
|
register int r5 asm ("r5"); \
|
|
register int r6 asm ("r6") = (int)(newval); \
|
|
int retval, orig_oldval = (int)(oldval); \
|
|
long kernel_cmpxchg = 0x1004; \
|
|
while (1) \
|
|
{ \
|
|
r5 = *r4; \
|
|
if (r5 != orig_oldval) \
|
|
{ \
|
|
retval = r5; \
|
|
break; \
|
|
} \
|
|
asm volatile ("callr %1\n" \
|
|
: "=r" (r2) \
|
|
: "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \
|
|
: "ra", "memory"); \
|
|
if (!r2) { retval = orig_oldval; break; } \
|
|
} \
|
|
(__typeof (*(mem))) retval; \
|
|
})
|
|
|
|
#define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \
|
|
({ \
|
|
register int r2 asm ("r2"); \
|
|
register int *r4 asm ("r4") = (int*)(mem); \
|
|
register int r5 asm ("r5") = (int)(oldval); \
|
|
register int r6 asm ("r6") = (int)(newval); \
|
|
long kernel_cmpxchg = 0x1004; \
|
|
asm volatile ("callr %1\n" \
|
|
: "=r" (r2) \
|
|
: "r" (kernel_cmpxchg), "r" (r4), "r" (r5), "r" (r6) \
|
|
: "ra", "memory"); \
|
|
r2; \
|
|
})
|
|
|
|
#define atomic_full_barrier() ({ asm volatile ("sync"); })
|
|
|
|
#endif /* _NIOS2_ATOMIC_MACHINE_H */
|