diff options
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/powerpc')
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h | 8 | ||||
| -rw-r--r-- | nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c | 49 |
2 files changed, 53 insertions, 4 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h index eba0ade252..00ca257ca0 100644 --- a/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/powerpc/lowlevellock.h @@ -41,7 +41,7 @@ \ __ret = INTERNAL_SYSCALL (futex, __err, 4, \ (futexp), FUTEX_WAIT, (val), 0); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ }) #define lll_futex_timed_wait(futexp, val, timespec) \ @@ -51,7 +51,7 @@ \ __ret = INTERNAL_SYSCALL (futex, __err, 4, \ (futexp), FUTEX_WAIT, (val), (timespec)); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ }) #define lll_futex_wake(futexp, nr) \ @@ -61,7 +61,7 @@ \ __ret = INTERNAL_SYSCALL (futex, __err, 4, \ (futexp), FUTEX_WAKE, (nr), 0); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ }) #define lll_futex_requeue(futexp, nr_wake, nr_move, mutex) \ @@ -72,7 +72,7 @@ __ret = INTERNAL_SYSCALL (futex, __err, 5, \ (futexp), FUTEX_REQUEUE, (nr_wake), (nr_move), \ (mutex)); \ - INTERNAL_SYSCALL_ERROR_P (__ret, __err)? -__ret: 0; \ + INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret; \ }) #ifdef UP diff --git a/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c b/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c new file mode 100644 index 0000000000..d9ee5d50b7 --- /dev/null +++ b/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c @@ -0,0 +1,49 @@ +/* sem_post -- post to a POSIX semaphore. Powerpc version. + Copyright (C) 2003 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Paul Mackerras <paulus@au.ibm.com>, 2003. + + 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <sysdep.h> +#include <lowlevellock.h> +#include <internaltypes.h> +#include <semaphore.h> + +#include <shlib-compat.h> + +int +__new_sem_post (sem_t *sem) +{ + int *futex = (int *) sem; + int err, nr; + + __asm __volatile (__lll_rel_instr ::: "memory"); + nr = atomic_exchange_and_add (futex, 1); + err = lll_futex_wake (futex, nr + 1); + if (__builtin_expect (err, 0) < 0) + { + __set_errno (-err); + return -1; + } + return 0; +} +versioned_symbol (libpthread, __new_sem_post, sem_post, GLIBC_2_1); +#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1) +strong_alias (__new_sem_post, __old_sem_post) +compat_symbol (libpthread, __old_sem_post, sem_post, GLIBC_2_0); +#endif |