[PATCH 11/17] Consolidate Linux semtimedop implementation
Adhemerval Zanella
adhemerval.zanella@linaro.org
Tue Dec 27 14:02:00 GMT 2016
This patch consolidates the semtimedop Linux implementation in only
one default file, sysdeps/unix/sysv/linux/semtimedop.c. If tries to use
the direct syscall if it is supported, otherwise will use the old ipc
multiplex mechanism.
Checked on x86_64, i686, powerpc64le, aarch64, and armhf.
* sysdeps/unix/sysv/linux/alpha/syscalls.list (semtimedop): Remove.
* sysdeps/unix/sysv/linux/arm/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/generic/syscalls.list (semtimedop):
Likewise.
* sysdeps/unix/sysv/linux/hppa/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/ia64/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/microblaze/syscalls.list (semtimedop):
Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (semtimedop):
Likewise.
* sysdeps/unix/sysv/linux/x86_64/syscalls.list (semtimedop): Likewise.
* sysdeps/unix/sysv/linux/m68k/semtimedop.S: Remove file.
* sysdeps/unix/sysv/linux/s390/semtimedop.c: Reorganize headers and
add a comment about s390 syscall difference from default one.
* sysdeps/unix/sysv/linux/semtimedop.c (semtimedop): Use semtimedop
syscall if it is defined.
---
ChangeLog | 17 ++++++
sysdeps/unix/sysv/linux/alpha/syscalls.list | 1 -
sysdeps/unix/sysv/linux/arm/syscalls.list | 1 -
sysdeps/unix/sysv/linux/generic/syscalls.list | 1 -
sysdeps/unix/sysv/linux/hppa/syscalls.list | 1 -
sysdeps/unix/sysv/linux/ia64/syscalls.list | 1 -
sysdeps/unix/sysv/linux/m68k/semtimedop.S | 69 -----------------------
sysdeps/unix/sysv/linux/microblaze/syscalls.list | 1 -
sysdeps/unix/sysv/linux/mips/mips64/syscalls.list | 1 -
sysdeps/unix/sysv/linux/s390/semtimedop.c | 12 ++--
sysdeps/unix/sysv/linux/semtimedop.c | 13 +++--
sysdeps/unix/sysv/linux/x86_64/syscalls.list | 1 -
12 files changed, 31 insertions(+), 88 deletions(-)
delete mode 100644 sysdeps/unix/sysv/linux/m68k/semtimedop.S
diff --git a/sysdeps/unix/sysv/linux/alpha/syscalls.list b/sysdeps/unix/sysv/linux/alpha/syscalls.list
index c20543a..8d3a042 100644
--- a/sysdeps/unix/sysv/linux/alpha/syscalls.list
+++ b/sysdeps/unix/sysv/linux/alpha/syscalls.list
@@ -4,7 +4,6 @@ shmat - osf_shmat i:ipi __shmat shmat
oldshmctl EXTRA shmctl i:iip __old_shmctl shmctl@GLIBC_2.0
shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
-semtimedop - semtimedop i:ipip semtimedop
sigstack - sigstack 2 sigstack
diff --git a/sysdeps/unix/sysv/linux/arm/syscalls.list b/sysdeps/unix/sysv/linux/arm/syscalls.list
index 3014db8..1b2de93 100644
--- a/sysdeps/unix/sysv/linux/arm/syscalls.list
+++ b/sysdeps/unix/sysv/linux/arm/syscalls.list
@@ -26,7 +26,6 @@ personality EXTRA personality Ei:i __personality personality
shmat - shmat i:ipi __shmat shmat
shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
-semtimedop - semtimedop i:ipip semtimedop
# 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 54e1778..e12fb3e 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
-semtimedop - semtimedop i:ipip semtimedop
shmget - shmget i:iii __shmget shmget
shmctl - shmctl i:iip __shmctl shmctl
shmat - shmat i:ipi __shmat shmat
diff --git a/sysdeps/unix/sysv/linux/hppa/syscalls.list b/sysdeps/unix/sysv/linux/hppa/syscalls.list
index 8fbcaba..a8fbc44 100644
--- a/sysdeps/unix/sysv/linux/hppa/syscalls.list
+++ b/sysdeps/unix/sysv/linux/hppa/syscalls.list
@@ -5,7 +5,6 @@ shmat - shmat i:ipi __shmat shmat
shmctl - shmctl i:iip __shmctl shmctl
shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
-semtimedop - semtimedop i:ipip semtimedop
# 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 b9271cc..eda4e4e 100644
--- a/sysdeps/unix/sysv/linux/ia64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/ia64/syscalls.list
@@ -9,7 +9,6 @@ shmat - shmat i:ipi __shmat shmat
shmctl - shmctl i:iip __shmctl shmctl
shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
-semtimedop - semtimedop i:ipip semtimedop
# proper socket implementations:
accept - accept Ci:iBN __libc_accept __accept accept
diff --git a/sysdeps/unix/sysv/linux/m68k/semtimedop.S b/sysdeps/unix/sysv/linux/m68k/semtimedop.S
deleted file mode 100644
index b291070..0000000
--- a/sysdeps/unix/sysv/linux/m68k/semtimedop.S
+++ /dev/null
@@ -1,69 +0,0 @@
-/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Andreas Schwab <schwab@suse.de>, 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 <sysdep.h>
-
-#define SYSOP_semtimedop 4
-
-#define SVRSP 8 /* saved register space */
-#define PARMS 4+SVRSP /* space for 3 saved regs */
-#define SEMID PARMS
-#define SOPS SEMID+4
-#define NSOPS SOPS+4
-#define TIMEOUT NSOPS+4
-
- .text
-ENTRY (semtimedop)
-
- /* Save registers. */
- move.l %d2, %a1
- move.l %d3, -(%sp)
- cfi_adjust_cfa_offset (4)
- move.l %d5, -(%sp)
- cfi_adjust_cfa_offset (4)
- cfi_register (%d2, %a1)
- cfi_rel_offset (%d3, 0)
- cfi_rel_offset (%d5, 4)
-
- move.l #SYSOP_semtimedop, %d1
- move.l SEMID(%sp), %d2
- move.l NSOPS(%sp), %d3
- move.l SOPS(%sp), %d5
- move.l TIMEOUT(%sp), %a0
- move.l #SYS_ify (ipc), %d0
-
- trap #0
-
- /* Restore registers. */
- move.l (%sp)+, %d5
- cfi_adjust_cfa_offset (-4)
- cfi_restore (%d5)
- move.l (%sp)+, %d3
- cfi_adjust_cfa_offset (-4)
- cfi_restore (%d3)
- move.l %a1, %d2
- cfi_restore (%d2)
-
- /* Check for error. */
- tst.l %d0
- jmi SYSCALL_ERROR_LABEL
-
- /* Successful; return the syscall's value. */
- ret
-
-PSEUDO_END (semtimedop)
diff --git a/sysdeps/unix/sysv/linux/microblaze/syscalls.list b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
index 3da653d..d9afda0 100644
--- a/sysdeps/unix/sysv/linux/microblaze/syscalls.list
+++ b/sysdeps/unix/sysv/linux/microblaze/syscalls.list
@@ -11,4 +11,3 @@ personality EXTRA personality Ei:i __personality personality
shmat - shmat i:ipi __shmat shmat
shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
-semtimedop - semtimedop i:ipip semtimedop
diff --git a/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
index 720db96..9cbbd38 100644
--- a/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/mips/mips64/syscalls.list
@@ -5,4 +5,3 @@
shmat - shmat i:ipi __shmat shmat
shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
-semtimedop - semtimedop i:ipip semtimedop
diff --git a/sysdeps/unix/sysv/linux/s390/semtimedop.c b/sysdeps/unix/sysv/linux/s390/semtimedop.c
index f226953..db43f00 100644
--- a/sysdeps/unix/sysv/linux/s390/semtimedop.c
+++ b/sysdeps/unix/sysv/linux/s390/semtimedop.c
@@ -16,12 +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 <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
/* Perform user-defined atomical operation of array of semaphores. */
@@ -29,6 +27,10 @@ int
semtimedop (int semid, struct sembuf *sops, size_t nsops,
const struct timespec *timeout)
{
- return INLINE_SYSCALL (ipc, 5, IPCOP_semtimedop,
- semid, (int) nsops, timeout, sops);
+ /* The s390 sys_ipc variant has only five parameters instead of six
+ (as for default variant) and the only difference is the handling of
+ SEMTIMEDOP where on s390 the third parameter is used as a pointer
+ to a struct timespec where the generic variant uses fifth parameter. */
+ return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid, nsops, timeout,
+ sops);
}
diff --git a/sysdeps/unix/sysv/linux/semtimedop.c b/sysdeps/unix/sysv/linux/semtimedop.c
index 30ee7fe..4216dda 100644
--- a/sysdeps/unix/sysv/linux/semtimedop.c
+++ b/sysdeps/unix/sysv/linux/semtimedop.c
@@ -16,12 +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 <sysdep.h>
-#include <sys/syscall.h>
+#include <errno.h>
/* Perform user-defined atomical operation of array of semaphores. */
@@ -29,7 +27,10 @@ int
semtimedop (int semid, struct sembuf *sops, size_t nsops,
const struct timespec *timeout)
{
- return INLINE_SYSCALL (ipc, 6, IPCOP_semtimedop,
- semid, (int) nsops, 0, sops,
- timeout);
+#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
+ return INLINE_SYSCALL_CALL (semtimedop, semid, sops, nsops, timeout);
+#else
+ return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid, nsops, 0, sops,
+ timeout);
+#endif
}
diff --git a/sysdeps/unix/sysv/linux/x86_64/syscalls.list b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
index d17a186..573ed07 100644
--- a/sysdeps/unix/sysv/linux/x86_64/syscalls.list
+++ b/sysdeps/unix/sysv/linux/x86_64/syscalls.list
@@ -10,7 +10,6 @@ shmat - shmat i:ipi __shmat shmat
shmctl - shmctl i:iip __shmctl shmctl
shmdt - shmdt i:s __shmdt shmdt
shmget - shmget i:iii __shmget shmget
-semtimedop - semtimedop i:ipip semtimedop
syscall_clock_gettime EXTRA clock_gettime Ei:ip __syscall_clock_gettime
--
2.7.4
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