mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 07:20:11 +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
97 lines
3.1 KiB
C
97 lines
3.1 KiB
C
/* Copyright (C) 2001-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
|
|
|
|
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 <ucontext.h>
|
|
|
|
/* This implementation can handle any ARGC value but only
|
|
normal integer type parameters. Parameters of type float,
|
|
double, complex and structure with sizes 0, 2, 4 or 8
|
|
won't work.
|
|
makecontext sets up a stack and the registers for the
|
|
user context. The stack looks like this:
|
|
size offset
|
|
%r15 -> +-----------------------+
|
|
4 | back chain (zero) | 0
|
|
4 | reserved | 4
|
|
88 | save area for (*func) | 8
|
|
+-----------------------+
|
|
n | overflow parameters | 96
|
|
+-----------------------+
|
|
The registers are set up like this:
|
|
%r2-%r6: parameters 1 to 5
|
|
%r7 : (*func) pointer
|
|
%r8 : uc_link from ucontext structure
|
|
%r9 : address of setcontext
|
|
%r14 : return address to uc_link trampoline
|
|
%r15 : stack pointer.
|
|
|
|
The trampoline looks like this:
|
|
basr %r14,%r7
|
|
lr %r2,%r8
|
|
br %r9. */
|
|
|
|
void
|
|
__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
|
|
{
|
|
extern void __makecontext_ret (void);
|
|
unsigned long int *sp;
|
|
va_list ap;
|
|
|
|
sp = (unsigned long int *) (((unsigned long int) ucp->uc_stack.ss_sp
|
|
+ ucp->uc_stack.ss_size) & -8L);
|
|
|
|
/* Set the return address to trampoline. */
|
|
ucp->uc_mcontext.gregs[14] = (long int) __makecontext_ret;
|
|
|
|
/* Set register parameters. */
|
|
va_start (ap, argc);
|
|
for (int i = 0; i < argc && i < 5; ++i)
|
|
ucp->uc_mcontext.gregs[2 + i] = va_arg (ap, long int);
|
|
|
|
/* The remaining arguments go to the overflow area. */
|
|
if (argc > 5)
|
|
{
|
|
sp -= argc - 5;
|
|
for (int i = 5; i < argc; ++i)
|
|
sp[i - 5] = va_arg (ap, long int);
|
|
}
|
|
va_end (ap);
|
|
|
|
/* Make room for the save area and set the backchain. */
|
|
sp -= 24;
|
|
*sp = 0;
|
|
|
|
/* Pass (*func) to __makecontext_ret in %r7. */
|
|
ucp->uc_mcontext.gregs[7] = (long int) func;
|
|
|
|
/* Pass ucp->uc_link to __makecontext_ret in %r8. */
|
|
ucp->uc_mcontext.gregs[8] = (long int) ucp->uc_link;
|
|
|
|
/* Pass address of setcontext in %r9. */
|
|
ucp->uc_mcontext.gregs[9] = (long int) &setcontext;
|
|
|
|
/* Set stack pointer. */
|
|
ucp->uc_mcontext.gregs[15] = (long int) sp;
|
|
}
|
|
|
|
weak_alias (__makecontext, makecontext)
|