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/* Copyright (C) 1991-2017 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 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
<http://www.gnu.org/licenses/>. */
#include <setjmp.h>
/* Save the current program position in ENV and return 0. */
int
#if defined BSD_SETJMP
# undef setjmp
# define savemask 1
setjmp (jmp_buf env)
#elif defined BSD__SETJMP
# undef _setjmp
# define savemask 0
_setjmp (jmp_buf env)
#else
__sigsetjmp (jmp_buf env, int savemask)
#endif
{
/* 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] = __builtin_return_address (0);
/* 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 = *(int **) __builtin_frame_address (0);
/* Save caller's SP, not our own. */
env[0].__jmpbuf[0].__sp = (int *) __builtin_frame_address (0) + 2;
#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]));
#elif defined (__mcffpu__)
asm volatile ("fmovem %/fp0-%/fp7, %0"
: : "m" (env[0].__jmpbuf[0].__fpregs[0]));
#endif
#if IS_IN (rtld)
/* In ld.so we never save the signal mask. */
return 0;
#else
/* Save the signal mask if requested. */
return __sigjmp_save (env, savemask);
#endif
}
#if !defined BSD_SETJMP && !defined BSD__SETJMP
libc_hidden_def (__sigsetjmp)
#endif
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