Update.

2003-06-19  Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/ia64/sem_post.c: Move to...
	* sysdeps/unix/sysv/linux/sem_post.c: ...here.

	* sysdeps/unix/sysv/linux/sem_post.c: Move to...
	* sysdeps/unix/sysv/linux/powerpc/sem_post.c: ... here.  Pass nr + 1
	instead of nr to lll_futex_wake.  Only set errno and return -1
	if err < 0.

	* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h (lll_futex_wait,
	lll_futex_timed_wait, lll_futex_wake, lll_futex_requeue): On success
	return actual return value from the syscall, not 0.

	compat_timer_getoverrun.

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