1/* $NetBSD: sigsetjmp.S,v 1.6 2013/04/19 16:50:22 matt Exp $ */ 2 3/* 4 * Copyright (c) 1997 Mark Brinicombe 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Mark Brinicombe 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <machine/asm.h> 36#include <machine/setjmp.h> 37 38/* 39 * C library -- sigsetjmp, siglongjmp 40 * 41 * longjmp(a,v) 42 * will generate a "return(v)" from the last call to 43 * setjmp(a, m) 44 * by restoring registers from the stack. 45 * The previous signal state is restored. 46 */ 47 48ENTRY(sigsetjmp) 49 teq r1, #0 50 beq PIC_SYM(_C_LABEL(_setjmp), PLT) 51 b PIC_SYM(_C_LABEL(setjmp), PLT) 52END(sigsetjmp) 53 54.L_setjmp_magic: 55 .word _JB_MAGIC__SETJMP 56WEAK_ALIAS(__siglongjmp, siglongjmp) 57 58ENTRY(siglongjmp) 59 ldr r2, .L_setjmp_magic /* load magic */ 60 ldr r3, [r0] /* get magic from jmp_buf */ 61 bic r3, r3, #(_JB_MAGIC__SETJMP ^ _JB_MAGIC__SETJMP_VFP) 62 /* ignore VFP-ness of magic */ 63 teq r2, r3 /* magic correct? */ 64 beq PIC_SYM(_C_LABEL(_longjmp), PLT) 65 b PIC_SYM(_C_LABEL(longjmp), PLT) 66END(siglongjmp) 67 68 .section .note.GNU-stack,"",%progbits 69