1 /* $OpenBSD: sigsetjmp.S,v 1.5 2005/08/07 16:40:15 espie Exp $ */ 2 /*- 3 * Copyright (c) 1991, 1993, 1995, 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Havard Eidnes. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <private/bionic_asm.h> 35 #include <machine/regnum.h> 36 #include <machine/setjmp.h> 37 38 /* 39 * trampolines for sigsetjmp and siglongjmp save and restore mask. 40 * 41 */ 42 FRAMESZ= MKFSIZ(1,1) 43 GPOFF= FRAMESZ-2*REGSZ 44 45 LEAF(sigsetjmp, FRAMESZ) 46 PTR_SUBU sp, FRAMESZ 47 SETUP_GP64(GPOFF, sigsetjmp) 48 .set reorder 49 REG_S a1, (_JBLEN*REGSZ)(a0) # save "savemask" 50 bne a1, 0x0, 1f # do saving of signal mask? 51 LA t9, _setjmp 52 RESTORE_GP64 53 PTR_ADDU sp, FRAMESZ 54 jr t9 55 56 1: LA t9, setjmp 57 RESTORE_GP64 58 PTR_ADDU sp, FRAMESZ 59 jr t9 60 END(sigsetjmp) 61 62 LEAF(siglongjmp, FRAMESZ) 63 PTR_SUBU sp, FRAMESZ 64 SETUP_GP64(GPOFF, siglongjmp) 65 .set reorder 66 REG_L t0, (_JBLEN*REGSZ)(a0) # get "savemask" 67 bne t0, 0x0, 1f # restore signal mask? 68 LA t9, _longjmp 69 RESTORE_GP64 70 PTR_ADDU sp, FRAMESZ 71 jr t9 72 1: 73 LA t9, longjmp 74 RESTORE_GP64 75 PTR_ADDU sp, FRAMESZ 76 jr t9 77 END(siglongjmp) 78
