mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-28 23:34:53 +03:00
41bdb6e20c
2001-07-06 Paul Eggert <eggert@twinsun.com> * manual/argp.texi: Remove ignored LGPL copyright notice; it's not appropriate for documentation anyway. * manual/libc-texinfo.sh: "Library General Public License" -> "Lesser General Public License". 2001-07-06 Andreas Jaeger <aj@suse.de> * All files under GPL/LGPL version 2: Place under LGPL version 2.1.
49 lines
1.7 KiB
C
49 lines
1.7 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Jakub Jelinek <jakub@redhat.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, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <ucontext.h>
|
|
|
|
extern int __getcontext (ucontext_t *ucp);
|
|
extern int __setcontext (const ucontext_t *ucp, int restoremask);
|
|
|
|
int
|
|
__swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
|
|
{
|
|
extern void __swapcontext_ret (void);
|
|
/* Save the current machine context to oucp. */
|
|
__getcontext (oucp);
|
|
/* Modify oucp to skip the __setcontext call on reactivation. */
|
|
oucp->uc_mcontext.mc_gregs[MC_PC] = (long) __swapcontext_ret;
|
|
oucp->uc_mcontext.mc_gregs[MC_NPC] = ((long) __swapcontext_ret) + 4;
|
|
/* Restore the machine context in ucp. */
|
|
__setcontext (ucp, 1);
|
|
return 0;
|
|
}
|
|
|
|
asm (" \n\
|
|
.text \n\
|
|
.type __swapcontext_ret, #function \n\
|
|
__swapcontext_ret: \n\
|
|
return %i7 + 8 \n\
|
|
clr %o0 \n\
|
|
.size __swapcontext_ret, .-__swapcontext_ret \n\
|
|
");
|
|
|
|
weak_alias (__swapcontext, swapcontext)
|