mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 10:21:05 +00:00
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/* Copyright (C) 1991, 1992, 1994, 1997 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., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <setjmp.h>
|
|
|
|
/* Save the current program position in ENV and return 0. */
|
|
int
|
|
__sigsetjmp (jmp_buf env, int savemask)
|
|
{
|
|
/* Save data registers D1 through D7. */
|
|
asm volatile ("movem%.l %/d1-%/d7, %0"
|
|
: : "m" (env[0].__jmpbuf[0].__dregs[0]));
|
|
|
|
/* Save return address in place of register A0. */
|
|
env[0].__jmpbuf[0].__aregs[0] = ((void **) &env)[-1];
|
|
|
|
/* Save address registers A1 through A5. */
|
|
asm volatile ("movem%.l %/a1-%/a5, %0"
|
|
: : "m" (env[0].__jmpbuf[0].__aregs[1]));
|
|
|
|
/* Save caller's FP, not our own. */
|
|
env[0].__jmpbuf[0].__fp = ((void **) &env)[-2];
|
|
|
|
/* Save caller's SP, not our own. */
|
|
env[0].__jmpbuf[0].__sp = (void *) &env;
|
|
|
|
#if defined(__HAVE_68881__) || defined(__HAVE_FPU__)
|
|
/* Save floating-point (68881) registers FP0 through FP7. */
|
|
asm volatile ("fmovem%.x %/fp0-%/fp7, %0"
|
|
: : "m" (env[0].__jmpbuf[0].__fpregs[0]));
|
|
#endif
|
|
|
|
/* Save the signal mask if requested. */
|
|
return __sigjmp_save (env, savemask);
|
|
}
|