mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
/* Put these global register declarations first, because we get an error if
|
|
they come after any function definition, including inlines which might
|
|
be in some header. */
|
|
|
|
#define REGS \
|
|
REG (bx);\
|
|
REG (si);\
|
|
REG (di)
|
|
|
|
#define REG(xx) register long int xx asm (#xx)
|
|
REGS;
|
|
#undef REG
|
|
|
|
#include <errno.h>
|
|
#include <setjmp.h>
|
|
|
|
/* Save the current program position in ENV and return 0. */
|
|
int
|
|
__sigsetjmp (jmp_buf env, int savemask)
|
|
{
|
|
/* Save the general registers. */
|
|
#define REG(xx) env[0].__jmpbuf[0].__##xx = xx
|
|
REGS;
|
|
#undef REG
|
|
|
|
/* Save the return PC. */
|
|
env[0].__jmpbuf[0].__pc = ((void **) &env)[-1];
|
|
|
|
/* Save caller's FP, not our own. */
|
|
env[0].__jmpbuf[0].__bp = ((void **) &env)[-2];
|
|
|
|
/* Save caller's SP, not our own. */
|
|
env[0].__jmpbuf[0].__sp = (void *) &env;
|
|
|
|
/* Save the signal mask if requested. */
|
|
return __sigjmp_save (env, savemask);
|
|
}
|