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2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
110 lines
2.9 KiB
ArmAsm
110 lines
2.9 KiB
ArmAsm
/* Copyright (C) 1996-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Andreas Schwab (schwab@issan.informatik.uni-dortmund.de)
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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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/* 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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#include <tls.h>
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/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
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void *parent_tidptr, void *tls, void *child_tidptr) */
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.text
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ENTRY (__clone)
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/* Sanity check arguments. */
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movel #-EINVAL, %d0
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movel 4(%sp), %a0 /* no NULL function pointers */
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tstl %a0
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jeq SYSCALL_ERROR_LABEL
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movel 8(%sp), %a1 /* no NULL stack pointers */
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tstl %a1
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jeq SYSCALL_ERROR_LABEL
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/* Allocate space and copy the argument onto the new stack. */
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movel 16(%sp), -(%a1)
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/* Do the system call */
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movel 12+0(%sp), %d1 /* get flags */
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movel %d3, -(%a1) /* save %d3 and get parent_tidptr */
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movel %d3, -(%sp)
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (%d3, 0)
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movel 20+4(%sp), %d3
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movel %d4, -(%a1) /* save %d4 and get child_tidptr */
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movel %d4, -(%sp)
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (%d4, 0)
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movel 28+8(%sp), %d4
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movel %d5, -(%a1) /* save %d5 and get tls */
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movel %d5, -(%sp)
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (%d5, 0)
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movel 24+12(%sp), %d5
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/* save %d2 and get stack pointer */
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#ifdef __mcoldfire__
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movel %d2, -(%a1)
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movel %d2, -(%sp)
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cfi_adjust_cfa_offset (4)
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cfi_rel_offset (%d2, 0)
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movel %a1, %d2
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#else
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exg %d2, %a1 /* save %d2 and get stack pointer */
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cfi_register (%d2, %a1)
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#endif
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movel #SYS_ify (clone), %d0
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/* End FDE now, because in the child the unwind info will be
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wrong. */
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cfi_endproc
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trap #0
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#ifdef __mcoldfire__
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movel (%sp)+, %d2
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#else
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exg %d2, %a1 /* restore %d2 */
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#endif
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movel (%sp)+, %d5 /* restore %d5, %d4 and %d3 */
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movel (%sp)+, %d4
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movel (%sp)+, %d3
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tstl %d0
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jmi SYSCALL_ERROR_LABEL
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jeq 1f
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rts
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1:
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cfi_startproc
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cfi_undefined (pc) /* Mark end of stack */
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subl %fp, %fp /* terminate the stack frame */
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jsr (%a0)
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movel %d0, %d1
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movel #SYS_ify (exit), %d0
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trap #0
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cfi_endproc
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cfi_startproc
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PSEUDO_END (__clone)
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libc_hidden_def (__clone)
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weak_alias (__clone, clone)
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