diff options
Diffstat (limited to 'ports/sysdeps/unix/sysv/linux/tile/nptl/vfork.S')
| -rw-r--r-- | ports/sysdeps/unix/sysv/linux/tile/nptl/vfork.S | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/ports/sysdeps/unix/sysv/linux/tile/nptl/vfork.S b/ports/sysdeps/unix/sysv/linux/tile/nptl/vfork.S deleted file mode 100644 index 014cccf7e2..0000000000 --- a/ports/sysdeps/unix/sysv/linux/tile/nptl/vfork.S +++ /dev/null @@ -1,80 +0,0 @@ -/* Copyright (C) 2011-2014 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. - - 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 __ASSEMBLY__ /* for kernel headers */ -#include <linux/sched.h> -#include <asm/signal.h> -#include <tcb-offsets.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. */ - - .text -ENTRY (__vfork) - { - addli r11, tp, PID_OFFSET /* Point at PID. */ - movei r13, 1 - } - { - LD4U r12, r11 /* Load the saved PID. */ - shli r13, r13, 31 /* Build 0x80000000. */ - } - sub r12, zero, r12 /* Negate it. */ -#ifndef PT_VFORK - CMOVEQZ r12, r12, r13 /* Replace zero pids. */ -#endif - ST4 r11, r12 /* Store the temporary PID. */ - - { - moveli r0, CLONE_VFORK | CLONE_VM | SIGCHLD - move r1, zero - } - { - move r2, zero - move r3, zero - } - moveli TREG_SYSCALL_NR_NAME, __NR_clone - swint1 - - BEQZ r0, 1f /* If we are the parent... */ - { - addli r11, tp, PID_OFFSET /* Point at PID. */ - movei r13, 1 - } - { - LD4U r12, r11 /* Load the saved PID. */ - shli r13, r13, 31 /* Build 0x80000000. */ - } - { - CMPEQ r13, r12, r12 /* Test for that value. */ - sub r12, zero, r12 /* Re-negate it. */ - } -#ifndef PT_VFORK - CMOVNEZ r12, r13, zero /* Replace zero pids. */ -#endif - ST4 r11, r12 /* Restore the PID. */ -1: - BNEZ r1, 0f - jrp lr -PSEUDO_END (__vfork) -libc_hidden_def (__vfork) - -weak_alias (__vfork, vfork) |