1 files changed, 48 insertions, 0 deletions
diff --git a/libc/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c b/libc/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c
new file mode 100644
index 000000000..91b995518
--- /dev/null
+++ b/libc/nptl/sysdeps/unix/sysv/linux/powerpc/sem_post.c
@@ -0,0 +1,48 @@
+/* sem_post -- post to a POSIX semaphore.  Powerpc version.
+   Copyright (C) 2003, 2004 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;
+
+  __asm __volatile (__lll_rel_instr ::: "memory");
+  int nr = atomic_increment_val (futex);
+  int err = lll_futex_wake (futex, nr);
+  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