uclibc-ng/libc/sysdeps/linux/mips/bsd-_setjmp.S

/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'.  MIPS version.
   Copyright (C) 1996, 1997, 2000 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/>.  */

/* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
   We cannot do it in C because it must be a tail-call, so frame-unwinding
   in setjmp doesn't clobber the state restored by longjmp.  */

#include <sys/regdef.h>
#include <sys/asm.h>

#ifdef __PIC__
	.option pic2
#endif

.text
.global _setjmp
.align 2;
.ent _setjmp,0;
.type _setjmp,@function

_setjmp:
#ifdef __PIC__
#if (_MIPS_SIM == _MIPS_SIM_ABI32)
	.set	noreorder
	.cpload t9
	.set	reorder
	la	t9, __sigsetjmp
#else
	.cpsetup t9, v0, _setjmp
	PTR_LA	t9, __sigsetjmp
	.cpreturn
#endif
#endif
	move	a1,zero		/* Pass a second argument of zero.  */
#ifdef __PIC__
	jr	t9
#else
	j	__sigsetjmp
#endif
	.end	_setjmp;