1405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham/* $OpenBSD: sigsetjmp.S,v 1.5 2005/08/07 16:40:15 espie Exp $ */ 2405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham/*- 3405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * Copyright (c) 1991, 1993, 1995, 4405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * The Regents of the University of California. All rights reserved. 5405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 6405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * This code is derived from software contributed to Berkeley by 7405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * Havard Eidnes. 8405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 9405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * Redistribution and use in source and binary forms, with or without 10405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * modification, are permitted provided that the following conditions 11405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * are met: 12405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 1. Redistributions of source code must retain the above copyright 13405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * notice, this list of conditions and the following disclaimer. 14405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 2. Redistributions in binary form must reproduce the above copyright 15405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * notice, this list of conditions and the following disclaimer in the 16405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * documentation and/or other materials provided with the distribution. 17405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 3. Neither the name of the University nor the names of its contributors 18405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * may be used to endorse or promote products derived from this software 19405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * without specific prior written permission. 20405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 21405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * SUCH DAMAGE. 32405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham */ 33405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 34405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#include <machine/asm.h> 35405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#include <machine/regnum.h> 36405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham#include <machine/setjmp.h> 37405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 38405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham/* 39405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * trampolines for sigsetjmp and siglongjmp save and restore mask. 40405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham * 41405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham */ 42405b8029a6888f386adf3512113a33546141d1c8Raghu GandhamFRAMESZ= MKFSIZ(1,1) 43405b8029a6888f386adf3512113a33546141d1c8Raghu GandhamGPOFF= FRAMESZ-2*REGSZ 44405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 45405b8029a6888f386adf3512113a33546141d1c8Raghu GandhamLEAF(sigsetjmp, FRAMESZ) 46405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham PTR_SUBU sp, FRAMESZ 47405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham SETUP_GP64(GPOFF, sigsetjmp) 48405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham .set reorder 49405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham REG_S a1, (_JBLEN*REGSZ)(a0) # save "savemask" 50405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham bne a1, 0x0, 1f # do saving of signal mask? 51405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham LA t9, _setjmp 52405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham RESTORE_GP64 53405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham PTR_ADDU sp, FRAMESZ 54405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham jr t9 55405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 56405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham1: LA t9, setjmp 57405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham RESTORE_GP64 58405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham PTR_ADDU sp, FRAMESZ 59405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham jr t9 60405b8029a6888f386adf3512113a33546141d1c8Raghu GandhamEND(sigsetjmp) 61405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham 62405b8029a6888f386adf3512113a33546141d1c8Raghu GandhamLEAF(siglongjmp, FRAMESZ) 63405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham PTR_SUBU sp, FRAMESZ 64405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham SETUP_GP64(GPOFF, siglongjmp) 65405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham .set reorder 66405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham REG_L t0, (_JBLEN*REGSZ)(a0) # get "savemask" 67405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham bne t0, 0x0, 1f # restore signal mask? 68405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham LA t9, _longjmp 69405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham RESTORE_GP64 70405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham PTR_ADDU sp, FRAMESZ 71405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham jr t9 72405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham1: 73405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham LA t9, longjmp 74405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham RESTORE_GP64 75405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham PTR_ADDU sp, FRAMESZ 76405b8029a6888f386adf3512113a33546141d1c8Raghu Gandham jr t9 77405b8029a6888f386adf3512113a33546141d1c8Raghu GandhamEND(siglongjmp) 78