1/* $OpenBSD: sigsetjmp.S,v 1.5 2016/05/09 16:33:48 guenther Exp $ */ 2/* $NetBSD: sigsetjmp.S,v 1.2 1996/10/17 03:08:07 cgd Exp $ */ 3 4/* 5 * Copyright (c) 1994, 1995 Carnegie-Mellon University. 6 * All rights reserved. 7 * 8 * Author: Chris G. Demetriou 9 * 10 * Permission to use, copy, modify and distribute this software and 11 * its documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 18 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie the 28 * rights to redistribute these changes. 29 */ 30 31#include "SYS.h" 32 33/* 34 * C library -- sigsetjmp, siglongjmp 35 * 36 * siglongjmp(a,v) 37 * will generate a "return(v)" from 38 * the last call to 39 * sigsetjmp(a, mask) 40 * by restoring registers from the stack. 41 * If `mask' is non-zero, the previous signal 42 * state will be restored. 43 */ 44 45 .set noreorder 46 47LEAF(sigsetjmp, 2) 48 LDGP(pv) 49 stq a1, (81 * 8)(a0) /* save the mask */ 50 bne a1, Lsavesig /* if !zero, save signals */ 51 jmp zero, _HIDDEN(_setjmp) /* else don't. */ 52Lsavesig: 53 jmp zero, _HIDDEN(setjmp) 54END_WEAK(sigsetjmp) 55 56LEAF(siglongjmp, 2) 57 LDGP(pv) 58 ldq t0, (81 * 8)(a0) /* get the mask */ 59 bne t0, Lrestoresig /* if !zero, restore signals */ 60 jmp zero, _HIDDEN(_longjmp) 61Lrestoresig: 62 jmp zero, _HIDDEN(longjmp) 63END_WEAK(siglongjmp) 64