compat_sigsetjmp.S revision 1.1
11.1Stsutsui/* $NetBSD: compat_sigsetjmp.S,v 1.1 2005/09/17 11:49:39 tsutsui Exp $ */ 21.1Stsutsui 31.1Stsutsui/*- 41.1Stsutsui * Copyright (c) 1991, 1993, 1995, 51.1Stsutsui * The Regents of the University of California. All rights reserved. 61.1Stsutsui * 71.1Stsutsui * This code is derived from software contributed to Berkeley by 81.1Stsutsui * Havard Eidnes. 91.1Stsutsui * 101.1Stsutsui * Redistribution and use in source and binary forms, with or without 111.1Stsutsui * modification, are permitted provided that the following conditions 121.1Stsutsui * are met: 131.1Stsutsui * 1. Redistributions of source code must retain the above copyright 141.1Stsutsui * notice, this list of conditions and the following disclaimer. 151.1Stsutsui * 2. Redistributions in binary form must reproduce the above copyright 161.1Stsutsui * notice, this list of conditions and the following disclaimer in the 171.1Stsutsui * documentation and/or other materials provided with the distribution. 181.1Stsutsui * 3. Neither the name of the University nor the names of its contributors 191.1Stsutsui * may be used to endorse or promote products derived from this software 201.1Stsutsui * without specific prior written permission. 211.1Stsutsui * 221.1Stsutsui * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 231.1Stsutsui * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 241.1Stsutsui * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 251.1Stsutsui * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 261.1Stsutsui * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 271.1Stsutsui * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 281.1Stsutsui * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 291.1Stsutsui * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 301.1Stsutsui * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 311.1Stsutsui * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 321.1Stsutsui * SUCH DAMAGE. 331.1Stsutsui */ 341.1Stsutsui 351.1Stsutsui#include <sys/syscall.h> 361.1Stsutsui#include <mips/regnum.h> 371.1Stsutsui#include <mips/asm.h> 381.1Stsutsui#include <machine/setjmp.h> 391.1Stsutsui 401.1Stsutsui#if defined(LIBC_SCCS) && !defined(lint) 411.1Stsutsui ASMSTR("from: @(#)setjmp.s 8.1 (Berkeley) 6/4/93") 421.1Stsutsui ASMSTR("$NetBSD: compat_sigsetjmp.S,v 1.1 2005/09/17 11:49:39 tsutsui Exp $") 431.1Stsutsui#endif /* LIBC_SCCS and not lint */ 441.1Stsutsui 451.1Stsutsui#ifdef __ABICALLS__ 461.1Stsutsui .abicalls 471.1Stsutsui#endif 481.1Stsutsui 491.1Stsutsui/* 501.1Stsutsui * C library -- sigsetjmp, siglongjmp 511.1Stsutsui * 521.1Stsutsui * siglongjmp(a,v) 531.1Stsutsui * will generate a "return(v)" from 541.1Stsutsui * the last call to 551.1Stsutsui * sigsetjmp(a, savemask) 561.1Stsutsui * by restoring registers from the stack, 571.1Stsutsui * and dependent on savemask restores the 581.1Stsutsui * signal mask. 591.1Stsutsui */ 601.1Stsutsui 611.1StsutsuiLEAF(sigsetjmp) 621.1Stsutsui#ifdef __ABICALLS__ 631.1Stsutsui .set noreorder 641.1Stsutsui .cpload t9 651.1Stsutsui .set reorder 661.1Stsutsui#endif 671.1Stsutsui sw a1, (_JBLEN*4)(a0) # save "savemask" 681.1Stsutsui bne a1, 0x0, 1f # do saving of signal mask? 691.1Stsutsui la t9, _setjmp 701.1Stsutsui jr t9 711.1Stsutsui 721.1Stsutsui1: la t9, setjmp 731.1Stsutsui jr t9 741.1StsutsuiEND(sigsetjmp) 751.1Stsutsui 761.1StsutsuiLEAF(siglongjmp) 771.1Stsutsui#ifdef __ABICALLS__ 781.1Stsutsui .set noreorder 791.1Stsutsui .cpload t9 801.1Stsutsui .set reorder 811.1Stsutsui#endif 821.1Stsutsui lw t0, (_JBLEN * 4)(a0) # get "savemask" 831.1Stsutsui bne t0, 0x0, 1f # restore signal mask? 841.1Stsutsui la t9, _longjmp 851.1Stsutsui jr t9 861.1Stsutsui1: la t9, longjmp 871.1Stsutsui jr t9 881.1StsutsuiEND(siglongjmp) 89