mirror of
https://sourceware.org/git/glibc.git
synced 2024-10-01 03:27:48 +00:00
567678b685
2003-01-30 Jakub Jelinek <jakub@redhat.com> * sysdeps/alpha/tls.h (THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Avoid warnings about unused self variable. * sysdeps/ia64/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Likewise. * sysdeps/s390/s390-32/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Likewise. * sysdeps/s390/s390-64/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Likewise. * sysdeps/sh/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Likewise. * sysdeps/sparc/sparc32/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Likewise. * sysdeps/sparc/sparc64/pt-machine.h (THREAD_GETMEM, THREAD_GETMEM_NC, THREAD_SETMEM, THREAD_SETMEM_NC): Likewise.
76 lines
2.7 KiB
ArmAsm
76 lines
2.7 KiB
ArmAsm
/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
|
|
|
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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
/* clone is even more special than fork as it mucks with stacks
|
|
and invokes a function in the right context after its all over. */
|
|
|
|
#include <sysdep.h>
|
|
#define _ERRNO_H 1
|
|
#include <bits/errno.h>
|
|
|
|
/* int __clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
|
|
pid_t *parent_tid, void *tls, pid_t *child_tid); */
|
|
/* sys_clone (void *child_stack, unsigned long flags,
|
|
pid_t *parent_tid, pid_t *child_tid, void *tls); */
|
|
|
|
.text
|
|
ENTRY(__clone)
|
|
st %r6,24(%r15) /* store %r6 to save area */
|
|
lr %r0,%r5 /* move *arg out of the way */
|
|
ltr %r1,%r2 /* check fn and move to %r1 */
|
|
jz error /* no NULL function pointers */
|
|
ltr %r2,%r3 /* check child_stack and move to %r2 */
|
|
jz error /* no NULL stack pointers */
|
|
lr %r3,%r4 /* move flags to %r3 */
|
|
lr %r4,%r6 /* move parent_tid to %r4 */
|
|
l %r5,100(%r15) /* load child_tid from stack */
|
|
l %r6,96(%r15) /* load tls from stack */
|
|
svc SYS_ify(clone)
|
|
ltr %r2,%r2 /* check return code */
|
|
jz thread_start
|
|
l %r6,24(%r15) /* restore %r6 */
|
|
jm SYSCALL_ERROR_LABEL
|
|
br %r14
|
|
error:
|
|
lhi %r2,-EINVAL
|
|
j SYSCALL_ERROR_LABEL
|
|
|
|
thread_start:
|
|
/* fn is in gpr 1, arg in gpr 0 */
|
|
lr %r2,%r0 /* set first parameter to void *arg */
|
|
ahi %r15,-96 /* make room on the stack for the save area */
|
|
xc 0(4,%r15),0(%r15)
|
|
basr %r14,%r1 /* jump to fn */
|
|
#ifdef PIC
|
|
basr %r12,0
|
|
.L0: lr %r1,%r12
|
|
al %r12,.L1-.L0(%r12)
|
|
al %r1,.L2-.L0(%r1)
|
|
br %r1 /* branch to _exit -> thread termination */
|
|
.L1: .long _GLOBAL_OFFSET_TABLE_ - .L0
|
|
.L2: .long _exit@PLT - .L0
|
|
#else
|
|
basr %r1,0
|
|
.L0: al %r1,.L1-.L0(0,%r1)
|
|
br %r1 /* branch to _exit -> thread termination */
|
|
.L1: .long _exit - .L0
|
|
#endif
|
|
PSEUDO_END (__clone)
|
|
weak_alias (__clone, clone)
|