mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-28 23:34:53 +03:00
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
100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
/* Create new context.
|
|
Copyright (C) 2008-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Helge Deller <deller@gmx.de>, 2008.
|
|
|
|
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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <libintl.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sysdep.h>
|
|
#include <ucontext.h>
|
|
|
|
/* POSIX only supports integer arguments. */
|
|
|
|
/* Stack must be 64-byte aligned at all times. */
|
|
#define STACK_ALIGN 64
|
|
/* Size of frame marker in unsigned long words. */
|
|
#define FRAME_SIZE_UL 8
|
|
/* Size of frame marker in bytes. */
|
|
#define FRAME_SIZE_BYTES (8 * sizeof (unsigned long))
|
|
/* Size of X arguments in bytes. */
|
|
#define ARGS(x) (x * sizeof (unsigned long))
|
|
|
|
void
|
|
__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
|
|
{
|
|
unsigned long *sp, *osp;
|
|
va_list ap;
|
|
int i;
|
|
|
|
/* Create a 64-byte aligned frame to store args. Use ss_sp if
|
|
it is available, otherwise be robust and use the currently
|
|
saved stack pointer. */
|
|
if (ucp->uc_stack.ss_sp && ucp->uc_stack.ss_size)
|
|
osp = (unsigned long *)ucp->uc_stack.ss_sp;
|
|
else
|
|
osp = (unsigned long *)ucp->uc_mcontext.sc_gr[30];
|
|
|
|
sp = (unsigned long *)((((unsigned long) osp)
|
|
+ FRAME_SIZE_BYTES + ARGS(argc) + STACK_ALIGN)
|
|
& ~(STACK_ALIGN - 1));
|
|
|
|
/* Use new frame. */
|
|
ucp->uc_mcontext.sc_gr[30] = ((unsigned long) sp);
|
|
|
|
/* Finish frame setup. */
|
|
if (ucp->uc_link)
|
|
{
|
|
/* Returning to the next context and next frame. */
|
|
sp[-4 / sizeof (unsigned long)] = ucp->uc_link->uc_mcontext.sc_gr[30];
|
|
sp[-20 / sizeof (unsigned long)] = ucp->uc_link->uc_mcontext.sc_gr[2];
|
|
}
|
|
else
|
|
{
|
|
/* This is the main context. No frame marker, and no return address. */
|
|
sp[-4 / sizeof (unsigned long)] = 0x0;
|
|
sp[-20 / sizeof (unsigned long)] = 0x0;
|
|
}
|
|
|
|
/* Store address to jump to. */
|
|
ucp->uc_mcontext.sc_gr[2] = (unsigned long) func;
|
|
|
|
/* Process arguments. */
|
|
va_start (ap, argc);
|
|
for (i = 0; i < argc; ++i)
|
|
{
|
|
if (i < 4)
|
|
{
|
|
ucp->uc_mcontext.sc_gr[26-i] = va_arg (ap, int);
|
|
continue;
|
|
}
|
|
|
|
if ((i < 8) && (sizeof (unsigned long) == 8))
|
|
{
|
|
/* 64bit: r19-r22 are arg7-arg4. */
|
|
ucp->uc_mcontext.sc_gr[22+4-i] = va_arg (ap, int);
|
|
continue;
|
|
}
|
|
|
|
/* All other arguments go on the stack. */
|
|
sp[-1 * (FRAME_SIZE_UL + 1 + i)] = va_arg (ap, int);
|
|
}
|
|
va_end (ap);
|
|
}
|
|
weak_alias(__makecontext, makecontext)
|