1*e415d488SLionel Sambuc/* $NetBSD: _setjmp.S,v 1.7 2011/04/30 19:43:17 martin Exp $ */ 22fe8fb19SBen Gras 32fe8fb19SBen Gras/* 42fe8fb19SBen Gras * Copyright (c) 1992, 1993 52fe8fb19SBen Gras * The Regents of the University of California. All rights reserved. 62fe8fb19SBen Gras * 72fe8fb19SBen Gras * This software was developed by the Computer Systems Engineering group 82fe8fb19SBen Gras * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 92fe8fb19SBen Gras * contributed to Berkeley. 102fe8fb19SBen Gras * 112fe8fb19SBen Gras * Redistribution and use in source and binary forms, with or without 122fe8fb19SBen Gras * modification, are permitted provided that the following conditions 132fe8fb19SBen Gras * are met: 142fe8fb19SBen Gras * 1. Redistributions of source code must retain the above copyright 152fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer. 162fe8fb19SBen Gras * 2. Redistributions in binary form must reproduce the above copyright 172fe8fb19SBen Gras * notice, this list of conditions and the following disclaimer in the 182fe8fb19SBen Gras * documentation and/or other materials provided with the distribution. 192fe8fb19SBen Gras * 3. Neither the name of the University nor the names of its contributors 202fe8fb19SBen Gras * may be used to endorse or promote products derived from this software 212fe8fb19SBen Gras * without specific prior written permission. 222fe8fb19SBen Gras * 232fe8fb19SBen Gras * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 242fe8fb19SBen Gras * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 252fe8fb19SBen Gras * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 262fe8fb19SBen Gras * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 272fe8fb19SBen Gras * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 282fe8fb19SBen Gras * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 292fe8fb19SBen Gras * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 302fe8fb19SBen Gras * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 312fe8fb19SBen Gras * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 322fe8fb19SBen Gras * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 332fe8fb19SBen Gras * SUCH DAMAGE. 342fe8fb19SBen Gras * 352fe8fb19SBen Gras * from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp 362fe8fb19SBen Gras */ 372fe8fb19SBen Gras 382fe8fb19SBen Gras#include <machine/asm.h> 392fe8fb19SBen Gras#if defined(LIBC_SCCS) && !defined(lint) 402fe8fb19SBen Gras#if 0 412fe8fb19SBen Gras .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" 422fe8fb19SBen Gras#else 43*e415d488SLionel Sambuc RCSID("$NetBSD: _setjmp.S,v 1.7 2011/04/30 19:43:17 martin Exp $") 442fe8fb19SBen Gras#endif 452fe8fb19SBen Gras#endif /* LIBC_SCCS and not lint */ 462fe8fb19SBen Gras 47*e415d488SLionel Sambuc .register %g2,#ignore 48*e415d488SLionel Sambuc .register %g3,#ignore 49*e415d488SLionel Sambuc 502fe8fb19SBen Gras/* 512fe8fb19SBen Gras * C library -- _setjmp, _longjmp 522fe8fb19SBen Gras * 532fe8fb19SBen Gras * _longjmp(a,v) 542fe8fb19SBen Gras * will generate a "return(v?v:1)" from 552fe8fb19SBen Gras * the last call to 562fe8fb19SBen Gras * _setjmp(a) 572fe8fb19SBen Gras * The previous signal state is NOT restored. 582fe8fb19SBen Gras */ 592fe8fb19SBen Gras 602fe8fb19SBen GrasENTRY(_setjmp) 612fe8fb19SBen Gras stx %sp, [%o0+0] /* store caller's stack pointer */ 622fe8fb19SBen Gras stx %o7, [%o0+8] /* and return pc */ 63*e415d488SLionel Sambuc stx %g0, [%o0+0x18] /* mark as non-sigmask jmpbuf */ 64*e415d488SLionel Sambuc 65*e415d488SLionel Sambuc /* store globals, offsets compatible with siglongjmp */ 66*e415d488SLionel Sambuc stx %g1, [%o0+0x28] 67*e415d488SLionel Sambuc stx %g2, [%o0+0x30] /* adjust asserts in longjmp.c */ 68*e415d488SLionel Sambuc stx %g3, [%o0+0x48] /* if you change any of these */ 69*e415d488SLionel Sambuc stx %g6, [%o0+0x50] /* offsets! */ 70*e415d488SLionel Sambuc stx %g7, [%o0+0x58] 71*e415d488SLionel Sambuc 722fe8fb19SBen Gras retl 732fe8fb19SBen Gras clr %o0 ! return 0 742fe8fb19SBen Gras 752fe8fb19SBen GrasENTRY(_longjmp) 762fe8fb19SBen Gras save %sp, -CC64FSZ, %sp 772fe8fb19SBen Gras flushw 782fe8fb19SBen Gras /* 792fe8fb19SBen Gras * We restore the saved stack pointer to %fp, then issue 802fe8fb19SBen Gras * a `restore' instruction which will reload the register 812fe8fb19SBen Gras * window from the stack. 822fe8fb19SBen Gras */ 83*e415d488SLionel Sambuc ldx [%i0+0x28],%g1 84*e415d488SLionel Sambuc ldx [%i0+0x30],%g2 85*e415d488SLionel Sambuc ldx [%i0+0x48],%g3 86*e415d488SLionel Sambuc ldx [%i0+0x50],%g6 87*e415d488SLionel Sambuc ldx [%i0+0x58],%g7 882fe8fb19SBen Gras ldx [%i0+8], %i7 892fe8fb19SBen Gras ldx [%i0+0], %fp 902fe8fb19SBen Gras mov 1, %i0 912fe8fb19SBen Gras movrnz %i1, %i1, %i0 ! compute v ? v : 1 922fe8fb19SBen Gras ret 932fe8fb19SBen Gras restore 94