1*37c9f0a6Schristos/* $NetBSD: saveregs.S,v 1.1 2005/12/20 19:28:50 christos Exp $ */ 2*37c9f0a6Schristos 3*37c9f0a6Schristos/* 4*37c9f0a6Schristos * Copyright (c) 1992, 1993 5*37c9f0a6Schristos * The Regents of the University of California. All rights reserved. 6*37c9f0a6Schristos * 7*37c9f0a6Schristos * This software was developed by the Computer Systems Engineering group 8*37c9f0a6Schristos * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9*37c9f0a6Schristos * contributed to Berkeley. 10*37c9f0a6Schristos * 11*37c9f0a6Schristos * Redistribution and use in source and binary forms, with or without 12*37c9f0a6Schristos * modification, are permitted provided that the following conditions 13*37c9f0a6Schristos * are met: 14*37c9f0a6Schristos * 1. Redistributions of source code must retain the above copyright 15*37c9f0a6Schristos * notice, this list of conditions and the following disclaimer. 16*37c9f0a6Schristos * 2. Redistributions in binary form must reproduce the above copyright 17*37c9f0a6Schristos * notice, this list of conditions and the following disclaimer in the 18*37c9f0a6Schristos * documentation and/or other materials provided with the distribution. 19*37c9f0a6Schristos * 3. Neither the name of the University nor the names of its contributors 20*37c9f0a6Schristos * may be used to endorse or promote products derived from this software 21*37c9f0a6Schristos * without specific prior written permission. 22*37c9f0a6Schristos * 23*37c9f0a6Schristos * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24*37c9f0a6Schristos * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25*37c9f0a6Schristos * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26*37c9f0a6Schristos * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27*37c9f0a6Schristos * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28*37c9f0a6Schristos * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29*37c9f0a6Schristos * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30*37c9f0a6Schristos * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31*37c9f0a6Schristos * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32*37c9f0a6Schristos * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33*37c9f0a6Schristos * SUCH DAMAGE. 34*37c9f0a6Schristos * 35*37c9f0a6Schristos * from: Header: saveregs.s,v 1.1 91/07/06 17:22:33 torek Exp 36*37c9f0a6Schristos */ 37*37c9f0a6Schristos 38*37c9f0a6Schristos#include <machine/asm.h> 39*37c9f0a6Schristos#if defined(LIBC_SCCS) && !defined(lint) 40*37c9f0a6Schristos RCSID("$NetBSD: saveregs.S,v 1.1 2005/12/20 19:28:50 christos Exp $") 41*37c9f0a6Schristos#endif /* LIBC_SCCS and not lint */ 42*37c9f0a6Schristos 43*37c9f0a6Schristos/* 44*37c9f0a6Schristos * Save register arguments in caller's `arg dump' area, so that 45*37c9f0a6Schristos * stdarg functions work. 46*37c9f0a6Schristos * 47*37c9f0a6Schristos * This really should be done with a pointer to the arg dump area; 48*37c9f0a6Schristos * our caller should allocate that area, not our caller's caller. 49*37c9f0a6Schristos * But then, they did not let me invent the calling sequence.... 50*37c9f0a6Schristos * 51*37c9f0a6Schristos * We assume the caller has executed a `save' instruction. 52*37c9f0a6Schristos */ 53*37c9f0a6Schristos 54*37c9f0a6SchristosENTRY(__builtin_saveregs) 55*37c9f0a6Schristos st %i0, [%fp + 0x44] ! fr->fr_argd[0] 56*37c9f0a6Schristos st %i1, [%fp + 0x48] ! fr->fr_argd[1] 57*37c9f0a6Schristos st %i2, [%fp + 0x4c] ! fr->fr_argd[2] 58*37c9f0a6Schristos st %i3, [%fp + 0x50] ! fr->fr_argd[3] 59*37c9f0a6Schristos st %i4, [%fp + 0x54] ! fr->fr_argd[4] 60*37c9f0a6Schristos retl 61*37c9f0a6Schristos st %i5, [%fp + 0x58] ! fr->fr_argd[5] 62