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author | Ulrich Drepper <drepper@redhat.com> | 1999-04-12 09:05:16 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1999-04-12 09:05:16 +0000 |
commit | a64e578b6fdb18c530d142a68a7e57eb04038b5d (patch) | |
tree | 213705ce4ff6c43f4eb189e1d422c1984ee10d3b /sysdeps/unix/sysv/linux/arm/vfork.S | |
parent | eb822fcf6fee6bbd4220658299ec1970e52f105d (diff) | |
download | glibc-a64e578b6fdb18c530d142a68a7e57eb04038b5d.tar.gz glibc-a64e578b6fdb18c530d142a68a7e57eb04038b5d.tar.xz glibc-a64e578b6fdb18c530d142a68a7e57eb04038b5d.zip |
Update.
1999-04-12 Philip Blundell <philb@gnu.org> * elf/elf.h: Update ARM definitions to match current gas2. * sysdeps/arm/bits/endian.h: Support big endian operation. * sysdeps/unix/sysv/linux/arm/ioperm.c (_outw, _outb, _outl): Don't bother range checking the port number. * sysdeps/unix/sysv/linux/arm/vfork.S: New file. * sysdeps/unix/sysv/linux/arm/sysdep.h (INLINE_SYSCALL): Include the syscall name in assembler output for ease of debugging. * sysdeps/unix/sysv/linux/arm/sigaction.c: Don't rely on undefined compiler behaviour. * sysdeps/unix/sysv/linux/arm/sigrestorer.S: New file. * sysdeps/unix/sysv/linux/arm/Makefile [$(subdir) = signal] (sysdep_routines): Add sigrestorer. * string/tester.c (test_strcpy): Add new tests for unaligned arguments. * sysdeps/arm/bits/string.h: Delete inline implementations of strcpy and stpcpy.
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/vfork.S')
-rw-r--r-- | sysdeps/unix/sysv/linux/arm/vfork.S | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/vfork.S b/sysdeps/unix/sysv/linux/arm/vfork.S new file mode 100644 index 0000000000..3d5bd95300 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arm/vfork.S @@ -0,0 +1,50 @@ +/* Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Philip Blundell <philb@gnu.org>. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <sysdep.h> +#define _ERRNO_H 1 +#include <bits/errno.h> + +/* Clone the calling process, but without copying the whole address space. + The calling process is suspended until the new process exits or is + replaced by a call to `execve'. Return -1 for errors, 0 to the new process, + and the process ID of the new process to the old process. */ + +ENTRY (__vfork) + +#ifdef __NR_vfork + swi __NR_vfork + cmn a1, #4096 + RETINSTR(movcc, pc, lr) + + /* Check if vfork syscall is known at all. */ + ldr a2, =-ENOSYS + teq a1, a2 + bne PLTJMP(C_SYMBOL_NAME(__syscall_error)) +#endif + + /* If we don't have vfork, fork is close enough. */ + swi __NR_fork + cmn a1, #4096 + RETINSTR(movcc, pc, lr) + b PLTJMP(C_SYMBOL_NAME(__syscall_error)) + +PSEUDO_END (__vfork) + +weak_alias (__vfork, vfork) |