1/* $NetBSD: sigsetjmp.S,v 1.6 2002/11/10 18:10:25 thorpej 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39#include <sys/syscall.h> 40#include <mips/regnum.h> 41#include <mips/asm.h> 42#include <machine/setjmp.h> 43 44#if defined(LIBC_SCCS) && !defined(lint) 45 ASMSTR("from: @(#)setjmp.s 8.1 (Berkeley) 6/4/93") 46 ASMSTR("$NetBSD: sigsetjmp.S,v 1.6 2002/11/10 18:10:25 thorpej Exp $") 47#endif /* LIBC_SCCS and not lint */ 48 49#ifdef __ABICALLS__ 50 .abicalls 51#endif 52 53/* 54 * C library -- sigsetjmp, siglongjmp 55 * 56 * siglongjmp(a,v) 57 * will generate a "return(v)" from 58 * the last call to 59 * sigsetjmp(a, savemask) 60 * by restoring registers from the stack, 61 * and dependent on savemask restores the 62 * signal mask. 63 */ 64 65LEAF(sigsetjmp) 66#ifdef __ABICALLS__ 67 .set noreorder 68 .cpload t9 69 .set reorder 70#endif 71 sw a1, (_JBLEN*4)(a0) # save "savemask" 72 bne a1, 0x0, 1f # do saving of signal mask? 73 la t9, _setjmp 74 jr t9 75 761: la t9, setjmp 77 jr t9 78END(sigsetjmp) 79 80LEAF(siglongjmp) 81#ifdef __ABICALLS__ 82 .set noreorder 83 .cpload t9 84 .set reorder 85#endif 86 lw t0, (_JBLEN * 4)(a0) # get "savemask" 87 bne t0, 0x0, 1f # restore signal mask? 88 la t9, _longjmp 89 jr t9 901: la t9, longjmp 91 jr t9 92END(siglongjmp) 93