1 /* Derived from: $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 <asm-generic/portability.h> 35 #include <machine/asm.h> 36 #include <machine/regnum.h> 37 38 #include "jboffsets.h" 39 40 /* 41 * trampolines for sigsetjmp and siglongjmp save and restore mask. 42 */ 43 FRAMESZ= MKFSIZ(1,1) 44 GPOFF= FRAMESZ-2*REGSZ 45 46 LEAF(WRAP(sigsetjmp), FRAMESZ) 47 PTR_SUBU sp, FRAMESZ 48 SETUP_GP64(GPOFF, sigsetjmp) 49 .set reorder 50 REG_S a1, JB_SAVEMASK(a0) # save "savemask" 51 bne a1, 0x0, 1f # do saving of signal mask? 52 LA t9, _setjmp_portable 53 RESTORE_GP64 54 PTR_ADDU sp, FRAMESZ 55 jr t9 56 57 1: LA t9, WRAP(setjmp) 58 RESTORE_GP64 59 PTR_ADDU sp, FRAMESZ 60 jr t9 61 END(WRAP(sigsetjmp)) 62 63 LEAF(WRAP(siglongjmp), FRAMESZ) 64 PTR_SUBU sp, FRAMESZ 65 SETUP_GP64(GPOFF, WRAP(siglongjmp)) 66 .set reorder 67 REG_L t0, JB_SAVEMASK(a0) # get "savemask" 68 bne t0, 0x0, 1f # restore signal mask? 69 LA t9, _longjmp_portable 70 RESTORE_GP64 71 PTR_ADDU sp, FRAMESZ 72 jr t9 73 1: 74 LA t9, WRAP(longjmp) 75 RESTORE_GP64 76 PTR_ADDU sp, FRAMESZ 77 jr t9 78 END(WRAP(siglongjmp)) 79
