Use semget syscall for Linux implementation

This patch add a direct call to semget syscall if it is supported by
kernel features.

hecked on x86_64, i686, powerpc64le, aarch64, and armhf.

	* sysdeps/unix/sysv/linux/alpha/syscalls.list (semget): Remove.
	* sysdeps/unix/sysv/linux/arm/syscalls.list (semget): Likewise.
	* sysdeps/unix/sysv/linux/generic/syscalls.list (semget): Likewise.
	* sysdeps/unix/sysv/linux/hppa/syscalls.list (semget): Likewise.
	* sysdeps/unix/sysv/linux/ia64/syscalls.list (semget): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/syscalls.list (semget): Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (semget):
	Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (semget):
	Likewise.
	* sysdeps/unix/sysv/linux/x86_64/syscalls.list (semget): Likewise.
	* sysdeps/unix/sysv/linux/semget.c (semget): Use semget syscall
	if it is defined.

11 files changed, 20 insertions, 14 deletions

diff --git a/ChangeLog b/ChangeLog
index b9e40cc..f4de0e3 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,19 @@
 2016-12-28  Adhemerval Zanella  <adhemerval.zanella@linaro.org>
 
+	* sysdeps/unix/sysv/linux/alpha/syscalls.list (semget): Remove.
+	* sysdeps/unix/sysv/linux/arm/syscalls.list (semget): Likewise.
+	* sysdeps/unix/sysv/linux/generic/syscalls.list (semget): Likewise.
+	* sysdeps/unix/sysv/linux/hppa/syscalls.list (semget): Likewise.
+	* sysdeps/unix/sysv/linux/ia64/syscalls.list (semget): Likewise.
+	* sysdeps/unix/sysv/linux/microblaze/syscalls.list (semget): Likewise.
+	* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (semget):
+	Likewise.
+	* sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list (semget):
+	Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/syscalls.list (semget): Likewise.
+	* sysdeps/unix/sysv/linux/semget.c (semget): Use semget syscall
+	if it is defined.
+
 	* sysdeps/unix/sysv/linux/alpha/Makefile (sysdeps_routines): Remove
 	oldsemctl.
 	* sysdeps/unix/sysv/linux/alpha/semctl.c: Remove file.
diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
index c12620a..2533263 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
+++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
@@ -6,7 +6,6 @@ shmdt		-	shmdt		i:s	__shmdt		shmdt
 shmget		-	shmget		i:iii	__shmget	shmget
 semop		-	semop		i:ipi	__semop		semop
 semtimedop	-	semtimedop	i:ipip	semtimedop
-semget		-	semget		i:iii	__semget	semget
 
 sigstack	-	sigstack	2	sigstack
 
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index 4bf4826..ef5bd01 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -28,7 +28,6 @@ shmdt		-	shmdt		i:s	__shmdt		shmdt
 shmget		-	shmget		i:iii	__shmget	shmget
 semop		-	semop		i:ipi	__semop		semop
 semtimedop	-	semtimedop	i:ipip	semtimedop
-semget		-	semget		i:iii	__semget	semget
 
 # proper socket implementations:
 accept		-	accept		Ci:iBN	__libc_accept	__accept accept
diff --git a/sysdeps/unix/sysv/linux/generic/syscalls.list b/sysdeps/unix/sysv/linux/generic/syscalls.list
index f95f1f7..485f6fe 100644
--- a/sysdeps/unix/sysv/linux/generic/syscalls.list
+++ b/sysdeps/unix/sysv/linux/generic/syscalls.list
@@ -1,7 +1,6 @@
 # File name	Caller	Syscall name	# args	Strong name	Weak names
 
 # SysV APIs
-semget		-	semget		i:iii	__semget	semget
 semtimedop	-	semtimedop	i:ipip	semtimedop
 semop		-	semop		i:ipi	__semop		semop
 shmget		-	shmget		i:iii	__shmget	shmget
diff --git a/sysdeps/unix/sysv/linux/hppa/syscalls.list b/sysdeps/unix/sysv/linux/hppa/syscalls.list
index 5040ef3..685ab93 100644
--- a/sysdeps/unix/sysv/linux/hppa/syscalls.list
+++ b/sysdeps/unix/sysv/linux/hppa/syscalls.list
@@ -7,7 +7,6 @@ shmdt		-	shmdt		i:s	__shmdt		shmdt
 shmget		-	shmget		i:iii	__shmget	shmget
 semop		-	semop		i:ipi	__semop		semop
 semtimedop      -       semtimedop      i:ipip  semtimedop
-semget		-	semget		i:iii	__semget	semget
 
 # proper socket implementations:
 accept		-	accept		Ci:iBN	__libc_accept	__accept accept
diff --git a/sysdeps/unix/sysv/linux/ia64/syscalls.list b/sysdeps/unix/sysv/linux/ia64/syscalls.list
index ca5cba4..56200ba 100644
--- a/sysdeps/unix/sysv/linux/ia64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/ia64/syscalls.list
@@ -11,7 +11,6 @@ shmdt		-	shmdt		i:s	__shmdt		shmdt
 shmget		-	shmget		i:iii	__shmget	shmget
 semop		-	semop		i:ipi	__semop		semop
 semtimedop	-	semtimedop	i:ipip	semtimedop
-semget		-	semget		i:iii	__semget	semget
 
 # proper socket implementations:
 accept		-	accept		Ci:iBN	__libc_accept	__accept accept
diff --git a/sysdeps/unix/sysv/linux/microblaze/syscalls.list b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
index c40bac3..a0b8ebf 100644
--- a/sysdeps/unix/sysv/linux/microblaze/syscalls.list
+++ b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
@@ -13,4 +13,3 @@ shmdt           -       shmdt           i:s     __shmdt         shmdt
 shmget          -       shmget          i:iii   __shmget        shmget
 semop           -       semop           i:ipi   __semop         semop
 semtimedop      -       semtimedop      i:ipip  semtimedop
-semget          -       semget          i:iii   __semget        semget
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
index 7c992d7..374fcc2 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
@@ -7,4 +7,3 @@ shmdt		-	shmdt		i:s	__shmdt		shmdt
 shmget		-	shmget		i:iii	__shmget	shmget
 semop		-	semop		i:ipi	__semop		semop
 semtimedop	-	semtimedop	i:ipip	semtimedop
-semget		-	semget		i:iii	__semget	semget
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list b/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list
index 09ab580..288e080 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/syscalls.list
@@ -6,4 +6,3 @@ shmctl		-	shmctl		i:iip	__shmctl	shmctl
 shmdt		-	shmdt		i:s	__shmdt		shmdt
 shmget		-	shmget		i:iii	__shmget	shmget
 semop		-	semop		i:ipi	__semop		semop
-semget		-	semget		i:iii	__semget	semget
diff --git a/sysdeps/unix/sysv/linux/semget.c b/sysdeps/unix/sysv/linux/semget.c
index 52189fd..a8876f5 100644
--- a/sysdeps/unix/sysv/linux/semget.c
+++ b/sysdeps/unix/sysv/linux/semget.c
@@ -16,13 +16,10 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <errno.h>
 #include <sys/sem.h>
 #include <ipc_priv.h>
-#include <stdlib.h>		/* for definition of NULL */
-
 #include <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
 
 /* Return identifier for array of NSEMS semaphores associated with
    KEY.  */
@@ -30,5 +27,9 @@
 int
 semget (key_t key, int nsems, int semflg)
 {
-  return INLINE_SYSCALL (ipc, 5, IPCOP_semget, key, nsems, semflg, NULL);
+#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+  return INLINE_SYSCALL_CALL (semget, key, nsems, semflg);
+#else
+  return INLINE_SYSCALL_CALL (ipc, IPCOP_semget, key, nsems, semflg, NULL);
+#endif
 }
diff --git a/sysdeps/unix/sysv/linux/x86_64/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
index f3a1541..d77a7ca 100644
--- a/sysdeps/unix/sysv/linux/x86_64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
@@ -12,7 +12,6 @@ shmdt		-	shmdt		i:s	__shmdt		shmdt
 shmget		-	shmget		i:iii	__shmget	shmget
 semop		-	semop		i:ipi	__semop		semop
 semtimedop	-	semtimedop	i:ipip	semtimedop
-semget		-	semget		i:iii	__semget	semget
 syscall_clock_gettime	EXTRA	clock_gettime	Ei:ip		__syscall_clock_gettime