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d555194cb3
2002-02-07 Andreas Schwab <schwab@suse.de> * configure.in: Fix check for -zcombreloc. 2002-02-06 H.J. Lu <hjl@gnu.org> * config.h.in (HAVE_BUILTIN_MEMSET): New. * configure.in: Check if __builtin_memset really works. * elf/rtld.c (_dl_start): Check HAVE_BUILTIN_MEMSET instead of __GNUC_PREREQ (2, 96) before using __builtin_memset. 2002-02-06 Jakub Jelinek <jakub@redhat.com> * io/bug-ftw3.c (main): Don't try the test if root. 2002-02-06 Martin Schwidefsky <schwidefsky@de.ibm.com> * sysdeps/unix/sysv/linux/s390/brk.c (__brk): Correct inline assembly constraints. * sysdeps/unix/sysv/linux/s390/s390-32/bits/resource.h (RLIMIT_LOCKS): Add RLIMIT_LOCKS and adjust RLIMIT_NLIMITS. * sysdeps/unix/sysv/linux/s390/s390-64/bits/resource.h (RLIMIT_LOCKS): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/clone.S (clone): Make clone a weak alias for __clone. * sysdeps/unix/sysv/linux/s390/s390-64/clone.S (clone): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/profil-counter.h: Fix typo. * sysdeps/unix/sysv/linux/s390/s390-64/Makefile: Add framestate. * sysdeps/unix/sysv/linux/s390/s390-64/Versions: New file. * sysdeps/unix/sysv/linux/s390/s390-64/mmap.S (__mmap64): Make __mmap a weak alias for __mmap64. * sysdeps/mips/atomicity.h (exchange_and_add): Not use branch likely. * sysdeps/unix/sysv/linux/mips/sys/tas.h (_test_and_set): Likewise. * sysdeps/generic/dl-tls.c: Don't read TLS header if TLS is not needed.
69 lines
2.4 KiB
ArmAsm
69 lines
2.4 KiB
ArmAsm
/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
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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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* clone is even more special than fork as it mucks with stacks
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and invokes a function in the right context after its all over. */
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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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/*int __clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg);*/
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/* sys_clone(void *child_stack, unsigned long flags) */
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.text
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ENTRY(__clone)
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/* Sanity check arguments & move registers */
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ltr %r1,%r2 /* no NULL function pointers */
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lhi %r2,-EINVAL
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jz SYSCALL_ERROR_LABEL
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ltr %r3,%r3 /* no NULL stack pointers */
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jz SYSCALL_ERROR_LABEL
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/* move child_stack and flags, then call SVC */
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lr %r2,%r3
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lr %r3,%r4
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svc SYS_ify(clone)
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ltr %r2,%r2 /* check return code */
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jm SYSCALL_ERROR_LABEL
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jz thread_start
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br %r14
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thread_start:
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/* fn is in gpr 1, arg in gpr 5 */
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lr %r2,%r5 /* set first parameter to void *arg */
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sr %r11,%r11 /* terminate the stack frame */
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ahi %r15,-96 /* make room on the stack for the save area */
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basr %r14,%r1 /* jump to fn */
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#ifdef PIC
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basr %r12,0
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.L0: lr %r1,%r12
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al %r12,.L1-.L0(%r12)
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al %r1,.L2-.L0(%r1)
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br %r1 /* branch to _exit -> thread termination */
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.L1: .long _GLOBAL_OFFSET_TABLE_ - .L0
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.L2: .long _exit@PLT - .L0
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#else
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basr %r1,0
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.L0: al %r1,.L1-.L0(0,%r1)
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br %r1 /* branch to _exit -> thread termination */
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.L1: .long _exit - .L0
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#endif
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PSEUDO_END (__clone)
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weak_alias (__clone, clone)
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