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Consolidate Linux semtimedop implementation
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.
This commit is contained in:
Adhemerval Zanella
parent
0f97184020
commit
38cee35b0c
17
ChangeLog
17
ChangeLog
@ -1,5 +1,22 @@
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2016-12-28 Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* sysdeps/unix/sysv/linux/alpha/syscalls.list (semtimedop): Remove.
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* sysdeps/unix/sysv/linux/arm/syscalls.list (semtimedop): Likewise.
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* sysdeps/unix/sysv/linux/generic/syscalls.list (semtimedop):
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Likewise.
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* sysdeps/unix/sysv/linux/hppa/syscalls.list (semtimedop): Likewise.
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* sysdeps/unix/sysv/linux/ia64/syscalls.list (semtimedop): Likewise.
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* sysdeps/unix/sysv/linux/microblaze/syscalls.list (semtimedop):
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Likewise.
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* sysdeps/unix/sysv/linux/mips/mips64/syscalls.list (semtimedop):
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Likewise.
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* sysdeps/unix/sysv/linux/x86_64/syscalls.list (semtimedop): Likewise.
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* sysdeps/unix/sysv/linux/m68k/semtimedop.S: Remove file.
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* sysdeps/unix/sysv/linux/s390/semtimedop.c: Reorganize headers and
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add a comment about s390 syscall difference from default one.
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* sysdeps/unix/sysv/linux/semtimedop.c (semtimedop): Use semtimedop
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syscall if it is defined.
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* sysdeps/unix/sysv/linux/alpha/syscalls.list (semop): Remove.
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* sysdeps/unix/sysv/linux/arm/syscalls.list (semop): Likewise.
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* sysdeps/unix/sysv/linux/generic/syscalls.list (semop): Likewise.
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@ -4,7 +4,6 @@ shmat - osf_shmat i:ipi __shmat shmat
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oldshmctl EXTRA shmctl i:iip __old_shmctl shmctl@GLIBC_2.0
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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semtimedop - semtimedop i:ipip semtimedop
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sigstack - sigstack 2 sigstack
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@ -26,7 +26,6 @@ personality EXTRA personality Ei:i __personality personality
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shmat - shmat i:ipi __shmat shmat
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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semtimedop - semtimedop i:ipip semtimedop
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# proper socket implementations:
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accept - accept Ci:iBN __libc_accept __accept accept
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@ -1,7 +1,6 @@
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# File name Caller Syscall name # args Strong name Weak names
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# SysV APIs
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semtimedop - semtimedop i:ipip semtimedop
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shmget - shmget i:iii __shmget shmget
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shmctl - shmctl i:iip __shmctl shmctl
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shmat - shmat i:ipi __shmat shmat
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@ -5,7 +5,6 @@ shmat - shmat i:ipi __shmat shmat
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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semtimedop - semtimedop i:ipip semtimedop
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# proper socket implementations:
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accept - accept Ci:iBN __libc_accept __accept accept
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@ -9,7 +9,6 @@ shmat - shmat i:ipi __shmat shmat
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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semtimedop - semtimedop i:ipip semtimedop
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# proper socket implementations:
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accept - accept Ci:iBN __libc_accept __accept accept
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@ -1,69 +0,0 @@
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/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Andreas Schwab <schwab@suse.de>, 2003.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#define SYSOP_semtimedop 4
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#define SVRSP 8 /* saved register space */
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#define PARMS 4+SVRSP /* space for 3 saved regs */
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#define SEMID PARMS
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#define SOPS SEMID+4
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#define NSOPS SOPS+4
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#define TIMEOUT NSOPS+4
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.text
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ENTRY (semtimedop)
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/* Save registers. */
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move.l %d2, %a1
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move.l %d3, -(%sp)
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cfi_adjust_cfa_offset (4)
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move.l %d5, -(%sp)
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cfi_adjust_cfa_offset (4)
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cfi_register (%d2, %a1)
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cfi_rel_offset (%d3, 0)
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cfi_rel_offset (%d5, 4)
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move.l #SYSOP_semtimedop, %d1
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move.l SEMID(%sp), %d2
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move.l NSOPS(%sp), %d3
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move.l SOPS(%sp), %d5
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move.l TIMEOUT(%sp), %a0
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move.l #SYS_ify (ipc), %d0
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trap #0
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/* Restore registers. */
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move.l (%sp)+, %d5
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cfi_adjust_cfa_offset (-4)
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cfi_restore (%d5)
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move.l (%sp)+, %d3
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cfi_adjust_cfa_offset (-4)
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cfi_restore (%d3)
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move.l %a1, %d2
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cfi_restore (%d2)
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/* Check for error. */
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tst.l %d0
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jmi SYSCALL_ERROR_LABEL
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/* Successful; return the syscall's value. */
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ret
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PSEUDO_END (semtimedop)
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@ -11,4 +11,3 @@ personality EXTRA personality Ei:i __personality personality
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shmat - shmat i:ipi __shmat shmat
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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semtimedop - semtimedop i:ipip semtimedop
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@ -5,4 +5,3 @@
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shmat - shmat i:ipi __shmat shmat
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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semtimedop - semtimedop i:ipip semtimedop
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@ -16,12 +16,10 @@
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/sem.h>
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#include <ipc_priv.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <errno.h>
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/* Perform user-defined atomical operation of array of semaphores. */
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@ -29,6 +27,10 @@ int
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semtimedop (int semid, struct sembuf *sops, size_t nsops,
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const struct timespec *timeout)
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{
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return INLINE_SYSCALL (ipc, 5, IPCOP_semtimedop,
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semid, (int) nsops, timeout, sops);
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/* The s390 sys_ipc variant has only five parameters instead of six
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(as for default variant) and the only difference is the handling of
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SEMTIMEDOP where on s390 the third parameter is used as a pointer
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to a struct timespec where the generic variant uses fifth parameter. */
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return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid, nsops, timeout,
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sops);
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}
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@ -16,12 +16,10 @@
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/sem.h>
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#include <ipc_priv.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <errno.h>
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/* Perform user-defined atomical operation of array of semaphores. */
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@ -29,7 +27,10 @@ int
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semtimedop (int semid, struct sembuf *sops, size_t nsops,
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const struct timespec *timeout)
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{
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return INLINE_SYSCALL (ipc, 6, IPCOP_semtimedop,
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semid, (int) nsops, 0, sops,
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timeout);
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#ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
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return INLINE_SYSCALL_CALL (semtimedop, semid, sops, nsops, timeout);
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#else
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return INLINE_SYSCALL_CALL (ipc, IPCOP_semtimedop, semid, nsops, 0, sops,
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timeout);
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#endif
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}
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@ -10,7 +10,6 @@ shmat - shmat i:ipi __shmat shmat
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shmctl - shmctl i:iip __shmctl shmctl
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shmdt - shmdt i:s __shmdt shmdt
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shmget - shmget i:iii __shmget shmget
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semtimedop - semtimedop i:ipip semtimedop
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syscall_clock_gettime EXTRA clock_gettime Ei:ip __syscall_clock_gettime
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