mirror of
https://sourceware.org/git/glibc.git
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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
80 lines
2.4 KiB
C
80 lines
2.4 KiB
C
/* Create new context.
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Copyright (C) 2015-2019 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 <stdarg.h>
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#include <stdint.h>
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#include <ucontext.h>
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/* makecontext sets up a stack and the registers for the
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user context. The stack looks like this:
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+-----------------------+
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| padding as required |
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+-----------------------+
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sp -> | parameters 5 to n |
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+-----------------------+
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The registers are set up like this:
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r4--r7 : parameter 1 to 4
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r16 : uc_link
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sp : stack pointer.
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*/
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void
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__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
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{
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extern void __startcontext (void);
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unsigned long *sp;
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va_list ap;
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int i;
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sp = (unsigned long *)
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((uintptr_t) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size);
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/* Allocate stack arguments. */
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sp -= argc < 4 ? 0 : argc - 4;
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/* Keep the stack aligned. */
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sp = (unsigned long*) (((uintptr_t) sp) & -4L);
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/* Init version field. */
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ucp->uc_mcontext.version = 2;
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/* Keep uc_link in r16. */
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ucp->uc_mcontext.regs[15] = (uintptr_t) ucp->uc_link;
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/* Return address points to __startcontext(). */
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ucp->uc_mcontext.regs[23] = (uintptr_t) &__startcontext;
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/* Frame pointer is null. */
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ucp->uc_mcontext.regs[24] = (uintptr_t) 0;
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/* Restart in user-space starting at 'func'. */
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ucp->uc_mcontext.regs[27] = (uintptr_t) func;
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/* Set stack pointer. */
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ucp->uc_mcontext.regs[28] = (uintptr_t) sp;
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va_start (ap, argc);
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for (i = 0; i < argc; ++i)
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if (i < 4)
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ucp->uc_mcontext.regs[i + 3] = va_arg (ap, unsigned long);
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else
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sp[i - 4] = va_arg (ap, unsigned long);
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va_end (ap);
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}
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weak_alias (__makecontext, makecontext)
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