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nptl: Remove sparc sem_wait

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This patch removes the sparc32 sem_wait.c implementation since it is
identical to default nptl one.  The sparcv9 is no longer required with
the removal.

Checked with a sparcv9 build.

	* sysdeps/sparc/sparc32/sem_wait.c: Remove file.
	* sysdeps/sparc/sparc32/sparcv9/sem_wait.c: Likewise.
This commit is contained in:
Adhemerval Zanella 2016-08-21 17:14:35 -03:00
parent 91dd866ff1
commit 49ad334ab1
3 changed files with 3 additions and 94 deletions
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3
ChangeLog
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@ -1,5 +1,8 @@
2016-09-15 Adhemerval Zanella <adhemerval.zanella@linaro.org>
* sysdeps/sparc/sparc32/sem_wait.c: Remove file.
* sysdeps/sparc/sparc32/sparcv9/sem_wait.c: Likewise.
[BZ #15765]
* nptl/Makefile (tests): Add tst-sem16.
* nptl/tst-sem16.c: New file.

93
sysdeps/sparc/sparc32/sem_wait.c
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@ -1,93 +0,0 @@
/* sem_wait -- wait on a semaphore. Generic futex-using version.
Copyright (C) 2003-2016 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, see
<http://www.gnu.org/licenses/>. */
#include <lowlevellock.h> /* lll_futex* used by the old code. */
#include "sem_waitcommon.c"
int
__new_sem_wait (sem_t *sem)
{
if (__new_sem_wait_fast ((struct new_sem *) sem, 0) == 0)
return 0;
else
return __new_sem_wait_slow((struct new_sem *) sem, NULL);
}
versioned_symbol (libpthread, __new_sem_wait, sem_wait, GLIBC_2_1);
#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_1)
int
attribute_compat_text_section
__old_sem_wait (sem_t *sem)
{
int *futex = (int *) sem;
int err;
do
{
if (atomic_decrement_if_positive (futex) > 0)
return 0;
/* Enable asynchronous cancellation. Required by the standard. */
int oldtype = __pthread_enable_asynccancel ();
/* Always assume the semaphore is shared. */
err = lll_futex_wait (futex, 0, LLL_SHARED);
/* Disable asynchronous cancellation. */
__pthread_disable_asynccancel (oldtype);
}
while (err == 0 || err == -EWOULDBLOCK);
__set_errno (-err);
return -1;
}
compat_symbol (libpthread, __old_sem_wait, sem_wait, GLIBC_2_0);
#endif
int
__new_sem_trywait (sem_t *sem)
{
/* We must not fail spuriously, so require a definitive result even if this
may lead to a long execution time. */
if (__new_sem_wait_fast ((struct new_sem *) sem, 1) == 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)
int
__old_sem_trywait (sem_t *sem)
{
int *futex = (int *) sem;
int val;
if (*futex > 0)
{
val = atomic_decrement_if_positive (futex);
if (val > 0)
return 0;
}
__set_errno (EAGAIN);
return -1;
}
compat_symbol (libpthread, __old_sem_trywait, sem_trywait, GLIBC_2_0);
#endif

1
sysdeps/sparc/sparc32/sparcv9/sem_wait.c
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#include <nptl/sem_wait.c>