_setjmp.S revision 1.7
1 1.7 martin /* $NetBSD: _setjmp.S,v 1.7 2011/04/30 19:43:17 martin Exp $ */ 2 1.1 eeh 3 1.1 eeh /* 4 1.1 eeh * Copyright (c) 1992, 1993 5 1.1 eeh * The Regents of the University of California. All rights reserved. 6 1.1 eeh * 7 1.1 eeh * This software was developed by the Computer Systems Engineering group 8 1.1 eeh * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 1.1 eeh * contributed to Berkeley. 10 1.1 eeh * 11 1.1 eeh * Redistribution and use in source and binary forms, with or without 12 1.1 eeh * modification, are permitted provided that the following conditions 13 1.1 eeh * are met: 14 1.1 eeh * 1. Redistributions of source code must retain the above copyright 15 1.1 eeh * notice, this list of conditions and the following disclaimer. 16 1.1 eeh * 2. Redistributions in binary form must reproduce the above copyright 17 1.1 eeh * notice, this list of conditions and the following disclaimer in the 18 1.1 eeh * documentation and/or other materials provided with the distribution. 19 1.5 agc * 3. Neither the name of the University nor the names of its contributors 20 1.1 eeh * may be used to endorse or promote products derived from this software 21 1.1 eeh * without specific prior written permission. 22 1.1 eeh * 23 1.1 eeh * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 1.1 eeh * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 1.1 eeh * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 1.1 eeh * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 1.1 eeh * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 1.1 eeh * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 1.1 eeh * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 1.1 eeh * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 1.1 eeh * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 1.1 eeh * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 1.1 eeh * SUCH DAMAGE. 34 1.1 eeh * 35 1.1 eeh * from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp 36 1.1 eeh */ 37 1.1 eeh 38 1.1 eeh #include <machine/asm.h> 39 1.1 eeh #if defined(LIBC_SCCS) && !defined(lint) 40 1.1 eeh #if 0 41 1.1 eeh .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" 42 1.1 eeh #else 43 1.7 martin RCSID("$NetBSD: _setjmp.S,v 1.7 2011/04/30 19:43:17 martin Exp $") 44 1.1 eeh #endif 45 1.1 eeh #endif /* LIBC_SCCS and not lint */ 46 1.1 eeh 47 1.7 martin .register %g2,#ignore 48 1.7 martin .register %g3,#ignore 49 1.7 martin 50 1.1 eeh /* 51 1.1 eeh * C library -- _setjmp, _longjmp 52 1.1 eeh * 53 1.1 eeh * _longjmp(a,v) 54 1.1 eeh * will generate a "return(v?v:1)" from 55 1.1 eeh * the last call to 56 1.1 eeh * _setjmp(a) 57 1.1 eeh * The previous signal state is NOT restored. 58 1.1 eeh */ 59 1.1 eeh 60 1.1 eeh ENTRY(_setjmp) 61 1.6 martin stx %sp, [%o0+0] /* store caller's stack pointer */ 62 1.6 martin stx %o7, [%o0+8] /* and return pc */ 63 1.7 martin stx %g0, [%o0+0x18] /* mark as non-sigmask jmpbuf */ 64 1.7 martin 65 1.7 martin /* store globals, offsets compatible with siglongjmp */ 66 1.7 martin stx %g1, [%o0+0x28] 67 1.7 martin stx %g2, [%o0+0x30] /* adjust asserts in longjmp.c */ 68 1.7 martin stx %g3, [%o0+0x48] /* if you change any of these */ 69 1.7 martin stx %g6, [%o0+0x50] /* offsets! */ 70 1.7 martin stx %g7, [%o0+0x58] 71 1.7 martin 72 1.1 eeh retl 73 1.1 eeh clr %o0 ! return 0 74 1.1 eeh 75 1.1 eeh ENTRY(_longjmp) 76 1.6 martin save %sp, -CC64FSZ, %sp 77 1.6 martin flushw 78 1.6 martin /* 79 1.6 martin * We restore the saved stack pointer to %fp, then issue 80 1.6 martin * a `restore' instruction which will reload the register 81 1.6 martin * window from the stack. 82 1.6 martin */ 83 1.7 martin ldx [%i0+0x28],%g1 84 1.7 martin ldx [%i0+0x30],%g2 85 1.7 martin ldx [%i0+0x48],%g3 86 1.7 martin ldx [%i0+0x50],%g6 87 1.7 martin ldx [%i0+0x58],%g7 88 1.6 martin ldx [%i0+8], %i7 89 1.6 martin ldx [%i0+0], %fp 90 1.6 martin mov 1, %i0 91 1.6 martin movrnz %i1, %i1, %i0 ! compute v ? v : 1 92 1.6 martin ret 93 1.6 martin restore 94
Indexes created Mon Sep 29 03:10:08 GMT 2025