2018-10-23 21:44:30 +00:00
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/* vfork for ARC Linux.
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2021-01-02 19:32:25 +00:00
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Copyright (C) 2020-2021 Free Software Foundation, Inc.
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2018-10-23 21:44:30 +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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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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<https://www.gnu.org/licenses/>. */
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#include <sys/syscall.h>
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#include <sysdep.h>
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#include <tcb-offsets.h>
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#define _SIGNAL_H
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#include <bits/signum-arch.h> /* For SIGCHLD */
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#define CLONE_VM 0x00000100
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#define CLONE_VFORK 0x00004000
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#define CLONE_FLAGS_FOR_VFORK (CLONE_VM|CLONE_VFORK|SIGCHLD)
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ENTRY (__vfork)
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mov r0, CLONE_FLAGS_FOR_VFORK
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mov_s r1, sp
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mov r8, __NR_clone
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ARC_TRAP_INSN
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cmp r0, 0
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jge [blink] ; child continues
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b __syscall_error
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PSEUDO_END (__vfork)
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libc_hidden_def (__vfork)
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weak_alias (__vfork, vfork)
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