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/* $NetBSD: sigsetjmp.S,v 1.6 2013/04/19 16:50:22 matt Exp $ */
/*
* Copyright (c) 1997 Mark Brinicombe
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Brinicombe
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$");
#include <machine/setjmp.h>
/*
* C library -- sigsetjmp, siglongjmp
*
* longjmp(a,v)
* will generate a "return(v)" from the last call to
* setjmp(a, m)
* by restoring registers from the stack.
* The previous signal state is restored.
*/
ENTRY(sigsetjmp)
teq r1, #0
beq PIC_SYM(_C_LABEL(_setjmp), PLT)
b PIC_SYM(_C_LABEL(setjmp), PLT)
END(sigsetjmp)
.L_setjmp_magic:
.word _JB_MAGIC__SETJMP
WEAK_ALIAS(__siglongjmp, siglongjmp)
ENTRY(siglongjmp)
ldr r2, .L_setjmp_magic /* load magic */
ldr r3, [r0] /* get magic from jmp_buf */
bic r3, r3, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP)
/* ignore VFP-ness of magic */
teq r2, r3 /* magic correct? */
beq PIC_SYM(_C_LABEL(_longjmp), PLT)
b PIC_SYM(_C_LABEL(longjmp), PLT)
END(siglongjmp)
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