posix: Consolidate Linux mq_timedreceive syscall

This patch consolidates the mq_timedreceive Linux syscall generation
on sysdeps/unix/sysv/linux/mq_timedreceive.c.  It basically removes it
from architecture auto-generation list.

Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu,
sparc64-linux-gnu, and sparcv9-linux-gnu.

	* rt/Makefile (CFLAGS-mq_timedreceive.c): New flag.
	* sysdeps/unix/sysv/linux/mq_timedreceive.c: New file.
	* sysdeps/unix/sysv/linux/syscalls.list (mq_timedreceive): Remove
	from auto-generation list.

4 files changed, 40 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 3e846a0506..65784a9061 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2017-05-18  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* rt/Makefile (CFLAGS-mq_timedreceive.c): New flag.
+	* sysdeps/unix/sysv/linux/mq_timedreceive.c: New file.
+	* sysdeps/unix/sysv/linux/syscalls.list (mq_timedreceive): Remove
+	from auto-generation list.
+
 	* sysdeps/unix/sysv/linux/Makefile (sysdep_routines): Add
 	open_by_handle_at.
 	(CFLAGS-open_by_handle_at.c): New flag.
diff --git a/rt/Makefile b/rt/Makefile
index 52838391d7..0ffa12db4c 100644
--- a/rt/Makefile
+++ b/rt/Makefile
@@ -61,6 +61,7 @@ extra-libs-others := $(extra-libs)
 include ../Rules
 
 CFLAGS-aio_suspend.c = -fexceptions
+CFLAGS-mq_timedreceive.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-clock_nanosleep.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-librt-cancellation.c = -fasynchronous-unwind-tables
 
diff --git a/sysdeps/unix/sysv/linux/mq_timedreceive.c b/sysdeps/unix/sysv/linux/mq_timedreceive.c
new file mode 100644
index 0000000000..6d1c145c24
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/mq_timedreceive.c
@@ -0,0 +1,34 @@
+/* Receive a message from a message queue with a timeout.  Linux version.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <mqueue.h>
+#include <sysdep-cancel.h>
+
+/* Receive the oldest from highest priority messages in message queue
+   MQDES, stop waiting if ABS_TIMEOUT expires.  */
+ssize_t
+__mq_timedreceive (mqd_t mqdes, char *__restrict msg_ptr, size_t msg_len,
+		   unsigned int *__restrict msg_prio,
+		   const struct timespec *__restrict abs_timeout)
+{
+  return SYSCALL_CANCEL (mq_timedreceive, mqdes, msg_ptr, msg_len, msg_prio,
+			 abs_timeout);
+}
+hidden_def (__mq_timedreceive)
+weak_alias (__mq_timedreceive, mq_timedreceive)
+hidden_weak (mq_timedreceive)
diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index a8d1299939..63914bcc82 100644
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -96,7 +96,6 @@ lremovexattr	-	lremovexattr	i:ss	lremovexattr
 fremovexattr	-	fremovexattr	i:is	fremovexattr
 
 mq_timedsend	-	mq_timedsend	Ci:ipiip	__mq_timedsend	mq_timedsend
-mq_timedreceive	-	mq_timedreceive	Ci:ipipp	__mq_timedreceive	mq_timedreceive
 mq_setattr	-	mq_getsetattr	i:ipp	mq_setattr
 
 timerfd_create	EXTRA	timerfd_create	i:ii	timerfd_create