2014-06-02 21:29:19 +00:00
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/* Copyright (C) 2004-2014 Free Software Foundation, Inc.
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2000-06-12 20:50:37 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 04:58:11 +00:00
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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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2000-06-12 20:50:37 +00:00
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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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2001-07-06 04:58:11 +00:00
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Lesser General Public License for more details.
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2000-06-12 20:50:37 +00:00
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2001-07-06 04:58:11 +00:00
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You should have received a copy of the GNU Lesser General Public
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2012-02-09 23:18:22 +00:00
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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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2000-06-12 20:50:37 +00:00
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#include <sysdep.h>
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#define _ERRNO_H 1
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#include <bits/errno.h>
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2014-06-02 21:29:19 +00:00
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#include <tcb-offsets.h>
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2000-06-12 20:50:37 +00:00
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/* Clone the calling process, but without copying the whole address space.
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The calling process is suspended until the new process exits or is
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replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
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and the process ID of the new process to the old process. */
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2014-06-02 21:29:19 +00:00
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ENTRY (__libc_vfork)
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/* Save the PID value. */
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stc gbr, r2
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mov.w .L2, r0
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mov.l @(r0,r2), r4
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neg r4, r1
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tst r1, r1
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2000-06-12 20:50:37 +00:00
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bf 1f
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2014-06-02 21:29:19 +00:00
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mov #1, r1
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rotr r1
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2000-06-12 20:50:37 +00:00
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1:
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2014-06-02 21:29:19 +00:00
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mov.l r1, @(r0,r2)
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2000-06-12 20:50:37 +00:00
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2014-06-02 21:29:19 +00:00
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mov.w .L1, r3
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Update.
2000-10-26 Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Yutaka Niibe <gniibe@chroot.org>
* sysdeps/sh/dl-machine.h (elf_machine_rela): Handle in place
relocation which is generated by new ld.
* sysdeps/sh/elf/initfini.c (_init): Preseted __fpscr_values.
(_fini): Delete an obsolete register prefix.
* sysdeps/unix/sysv/linux/sh/Versions: Add __xstat64, __fxstat64,
__lxstat64, alphasort64, glob64, readdir64, readdir64_r, scandir64
and versionsort64 as the 2.2-versioned symbols.
* sysdeps/unix/sysv/linux/sh/bits/fcntl.h: New file.
* sysdeps/unix/sysv/linux/sh/brk.c: Changes for the new system call
calling convention of the kernel.
* sysdeps/unix/sysv/linux/sh/pipe.S: Likewise.
* sysdeps/unix/sysv/linux/sh/socket.S: Likewise.
* sysdeps/unix/sysv/linux/sh/clone.S: Likewise.
* sysdeps/unix/sysv/linux/sh/vfork.S: Likewise.
* sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
* sysdeps/unix/sysv/linux/sh/fcntl.c: New file.
* sysdeps/unix/sysv/linux/sh/lockf64.c: New file.
* sysdeps/unix/sysv/linux/sh/sys/user.h: Include the kernel header
file and delete the definitions of struct user and user_fp.
* sysdeps/unix/sysv/linux/sh/syscall.S: New file.
* sysdeps/unix/sysv/linux/sh/syscalls.list: Remove entries for
s_ioctl, s_ipc, s_llseek, s_chown, s_fchown, s_lchown, s_execve,
rt_sigaction, rt_sigpending, rt_sigprocmask, rt_sigqueueinfo,
rt_sigsuspend, rt_sigtimedwait, s_getcwd, s_getdents, s_getgroups,
s_getpriority, s_getegid, s_geteuid, s_getuid, getresgid, getresuid,
s_getrlimit, s_poll, s_pread64, s_ptrace, s_pwrite64, s_reboot,
s_setrlimit, s_sigaction, s_sigpending, s_sigprocmask, s_sigsuspend,
s_setfsgid, s_setfsuid, s_setgid, s_setgroups, s_setregid,
s_setresgid, s_setresuid, s_setreuid, s_setuid, s_sysctl,
s_ugetrlimit, s_ustat, sys_fstat, sys_lstat, sys_mknod, sys_readv,
sys_stat, sys_writev and syscall.
2000-10-26 02:34:17 +00:00
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trapa #0x10
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2000-06-12 20:50:37 +00:00
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mov r0, r1
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2014-06-02 21:29:19 +00:00
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/* Restore the old PID value in the parent. */
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tst r0, r0
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bt.s 2f
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stc gbr, r2
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mov.w .L2, r0
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mov.l r4, @(r0,r2)
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mov r1, r0
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2:
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2000-06-12 20:50:37 +00:00
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mov #-12, r2
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shad r2, r1
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not r1, r1 // r1=0 means r0 = -1 to -4095
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tst r1, r1 // i.e. error in linux
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2003-01-05 11:26:28 +00:00
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bf .Lpseudo_end
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SYSCALL_ERROR_HANDLER
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.Lpseudo_end:
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2000-06-12 20:50:37 +00:00
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rts
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nop
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2014-06-02 21:29:19 +00:00
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.L1:
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.word __NR_vfork
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.L2:
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.word PID - TLS_PRE_TCB_SIZE
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.align 2
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PSEUDO_END (__libc_vfork)
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2002-12-31 11:12:11 +00:00
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2014-06-02 21:29:19 +00:00
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#if !NOT_IN_libc
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weak_alias (__libc_vfork, vfork)
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strong_alias (__libc_vfork, __vfork)
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2002-12-31 20:46:11 +00:00
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libc_hidden_def (__vfork)
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2014-06-02 21:29:19 +00:00
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#endif
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