From 74836003ed4f2613f5c47a654bdd38a366076c15 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Wed, 25 Jun 2014 10:04:14 -0700 Subject: SPARC: Consolidate unnecessary nptl/ subdirectories. --- sysdeps/sparc/sparc32/sem_trywait.c | 58 +++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 sysdeps/sparc/sparc32/sem_trywait.c (limited to 'sysdeps/sparc/sparc32/sem_trywait.c') diff --git a/sysdeps/sparc/sparc32/sem_trywait.c b/sysdeps/sparc/sparc32/sem_trywait.c new file mode 100644 index 0000000000..7d0fc556f9 --- /dev/null +++ b/sysdeps/sparc/sparc32/sem_trywait.c @@ -0,0 +1,58 @@ +/* sem_trywait -- wait on a semaphore. SPARC version. + Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Paul Mackerras , 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, see + . */ + +#include +#include +#include +#include +#include + +#include + + +int +__new_sem_trywait (sem_t *sem) +{ + struct sparc_old_sem *isem = (struct sparc_old_sem *) sem; + int val; + + if (isem->value > 0) + { + if (__atomic_is_v9) + val = atomic_decrement_if_positive (&isem->value); + else + { + __sparc32_atomic_do_lock24 (&isem->lock); + val = isem->value; + if (val > 0) + isem->value = val - 1; + __sparc32_atomic_do_unlock24 (&isem->lock); + } + if (val > 0) + return 0; + } + + __set_errno (EAGAIN); + return -1; +} +versioned_symbol (libpthread, __new_sem_trywait, sem_trywait, GLIBC_2_1); +#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1) +strong_alias (__new_sem_trywait, __old_sem_trywait) +compat_symbol (libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0); +#endif -- cgit v1.2.1