1/* $NetBSD: sigsetjmp.S,v 1.9 2009/12/14 01:07:42 matt Exp $ */ 2 3/*- 4 * Copyright (c) 1991, 1993, 1995, 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Havard Eidnes. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. 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 REGENTS 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 REGENTS 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 <sys/syscall.h> 36#include <mips/regnum.h> 37#include <mips/asm.h> 38#include <machine/setjmp.h> 39 40#include "assym.h" 41#include "SYS.h" 42 43#if defined(LIBC_SCCS) && !defined(lint) 44#if 0 45 RCSID("from: @(#)setjmp.s 8.1 (Berkeley) 6/4/93") 46#else 47 RCSID("$NetBSD: sigsetjmp.S,v 1.9 2009/12/14 01:07:42 matt Exp $") 48#endif 49#endif /* LIBC_SCCS and not lint */ 50 51/* 52 * C library -- sigsetjmp, siglongjmp 53 * 54 * siglongjmp(a,v) 55 * will generate a "return(v)" from 56 * the last call to 57 * sigsetjmp(a, savemask) 58 * by restoring registers from the stack, 59 * and dependent on savemask restores the 60 * signal mask. 61 */ 62 63LEAF(__sigsetjmp14) 64 PIC_PROLOGUE(__sigsetjmp14) 65 REG_S a1, _JBLEN*SZREG(a0) # save "savemask" 66 bne a1, 0x0, 1f # do saving of signal mask? 67 PIC_TAILCALL(_setjmp) 68 691: PIC_TAILCALL(__setjmp14) 70END(__sigsetjmp14) 71 72LEAF(__siglongjmp14) 73 PIC_PROLOGUE(__siglongjmp14) 74 REG_L t0, _JBLEN*SZREG(a0) # get "savemask" 75 bne t0, 0x0, 1f # restore signal mask? 76 PIC_TAILCALL(_longjmp) 77 781: PIC_TAILCALL(__longjmp14) 79END(__siglongjmp14) 80