/* $NetBSD: _setjmp.S,v 1.7 2011/04/30 19:43:17 martin Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Header: _setjmp.s,v 1.1 91/07/06 16:45:53 torek Exp */ #include <machine/asm.h> #if defined(LIBC_SCCS) && !defined(lint) #if 0 .asciz "@(#)_setjmp.s 8.1 (Berkeley) 6/4/93" #else RCSID("$NetBSD: _setjmp.S,v 1.7 2011/04/30 19:43:17 martin Exp $") #endif #endif /* LIBC_SCCS and not lint */ .register %g2,#ignore .register %g3,#ignore /* * C library -- _setjmp, _longjmp * * _longjmp(a,v) * will generate a "return(v?v:1)" from * the last call to * _setjmp(a) * The previous signal state is NOT restored. */ ENTRY(_setjmp) stx %sp, [%o0+0] /* store caller's stack pointer */ stx %o7, [%o0+8] /* and return pc */ stx %g0, [%o0+0x18] /* mark as non-sigmask jmpbuf */ /* store globals, offsets compatible with siglongjmp */ stx %g1, [%o0+0x28] stx %g2, [%o0+0x30] /* adjust asserts in longjmp.c */ stx %g3, [%o0+0x48] /* if you change any of these */ stx %g6, [%o0+0x50] /* offsets! */ stx %g7, [%o0+0x58] retl clr %o0 ! return 0 ENTRY(_longjmp) save %sp, -CC64FSZ, %sp flushw /* * We restore the saved stack pointer to %fp, then issue * a `restore' instruction which will reload the register * window from the stack. */ ldx [%i0+0x28],%g1 ldx [%i0+0x30],%g2 ldx [%i0+0x48],%g3 ldx [%i0+0x50],%g6 ldx [%i0+0x58],%g7 ldx [%i0+8], %i7 ldx [%i0+0], %fp mov 1, %i0 movrnz %i1, %i1, %i0 ! compute v ? v : 1 ret restore |