mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 17:50:20 +00:00
5a82c74822
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
92 lines
3.1 KiB
ArmAsm
92 lines
3.1 KiB
ArmAsm
/* Copyright (C) 2000-2019 Free Software Foundation, Inc.
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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 <sysdep.h>
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#include <asm/errno.h>
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/* int __clone2(int (*fn) (void *arg), void *child_stack_base, */
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/* size_t child_stack_size, int flags, void *arg, */
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/* pid_t *parent_tid, void *tls, pid_t *child_tid) */
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#define CHILD p8
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#define PARENT p9
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ENTRY(__clone2)
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.prologue
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alloc r2=ar.pfs,8,1,6,0
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cmp.eq p6,p0=0,in0
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cmp.eq p7,p0=0,in1
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mov r8=EINVAL
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mov out0=in3 /* Flags are first syscall argument. */
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mov out1=in1 /* Stack address. */
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(p6) br.cond.spnt.many __syscall_error /* no NULL function pointers */
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(p7) br.cond.spnt.many __syscall_error /* no NULL stack pointers */
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;;
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mov out2=in2 /* Stack size. */
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mov out3=in5 /* Parent TID Pointer */
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mov out4=in7 /* Child TID Pointer */
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mov out5=in6 /* TLS pointer */
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/*
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* clone2() is special: the child cannot execute br.ret right
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* after the system call returns, because it starts out
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* executing on an empty stack. Because of this, we can't use
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* the new (lightweight) syscall convention here. Instead, we
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* just fall back on always using "break".
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*
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* Furthermore, since the child starts with an empty stack, we
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* need to avoid unwinding past invalid memory. To that end,
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* we'll pretend now that __clone2() is the end of the
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* call-chain. This is wrong for the parent, but only until
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* it returns from clone2() but it's better than the
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* alternative.
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*/
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mov r15=SYS_ify (clone2)
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.save rp, r0
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break __BREAK_SYSCALL
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.body
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cmp.eq p6,p0=-1,r10
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cmp.eq CHILD,PARENT=0,r8 /* Are we the child? */
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(p6) br.cond.spnt.many __syscall_error
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;;
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(CHILD) mov loc0=gp
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(PARENT) ret
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;;
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ld8 out1=[in0],8 /* Retrieve code pointer. */
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mov out0=in4 /* Pass proper argument to fn */
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;;
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ld8 gp=[in0] /* Load function gp. */
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mov b6=out1
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br.call.dptk.many rp=b6 /* Call fn(arg) in the child */
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;;
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mov out0=r8 /* Argument to exit */
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mov gp=loc0
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mov r15=SYS_ify (exit)
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.save rp, r0
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break __BREAK_SYSCALL
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ret /* Not reached. */
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PSEUDO_END(__clone2)
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libc_hidden_def (__clone2)
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/* For now we leave __clone undefined. This is unlikely to be a */
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/* problem, since at least the i386 __clone in glibc always failed */
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/* with a 0 sp (eventhough the kernel explicitly handled it). */
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/* Thus all such calls needed to pass an explicit sp, and as a result, */
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/* would be unlikely to work on ia64. */
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