1*b6cbf720SGianluca Guida/* $NetBSD: saveregs.S,v 1.1 2005/12/20 19:28:50 christos Exp $ */ 2*b6cbf720SGianluca Guida 3*b6cbf720SGianluca Guida/* 4*b6cbf720SGianluca Guida * Copyright (c) 1992, 1993 5*b6cbf720SGianluca Guida * The Regents of the University of California. All rights reserved. 6*b6cbf720SGianluca Guida * 7*b6cbf720SGianluca Guida * This software was developed by the Computer Systems Engineering group 8*b6cbf720SGianluca Guida * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9*b6cbf720SGianluca Guida * contributed to Berkeley. 10*b6cbf720SGianluca Guida * 11*b6cbf720SGianluca Guida * Redistribution and use in source and binary forms, with or without 12*b6cbf720SGianluca Guida * modification, are permitted provided that the following conditions 13*b6cbf720SGianluca Guida * are met: 14*b6cbf720SGianluca Guida * 1. Redistributions of source code must retain the above copyright 15*b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer. 16*b6cbf720SGianluca Guida * 2. Redistributions in binary form must reproduce the above copyright 17*b6cbf720SGianluca Guida * notice, this list of conditions and the following disclaimer in the 18*b6cbf720SGianluca Guida * documentation and/or other materials provided with the distribution. 19*b6cbf720SGianluca Guida * 3. Neither the name of the University nor the names of its contributors 20*b6cbf720SGianluca Guida * may be used to endorse or promote products derived from this software 21*b6cbf720SGianluca Guida * without specific prior written permission. 22*b6cbf720SGianluca Guida * 23*b6cbf720SGianluca Guida * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24*b6cbf720SGianluca Guida * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25*b6cbf720SGianluca Guida * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26*b6cbf720SGianluca Guida * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27*b6cbf720SGianluca Guida * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28*b6cbf720SGianluca Guida * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29*b6cbf720SGianluca Guida * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30*b6cbf720SGianluca Guida * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31*b6cbf720SGianluca Guida * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32*b6cbf720SGianluca Guida * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33*b6cbf720SGianluca Guida * SUCH DAMAGE. 34*b6cbf720SGianluca Guida * 35*b6cbf720SGianluca Guida * from: Header: saveregs.s,v 1.1 91/07/06 17:22:33 torek Exp 36*b6cbf720SGianluca Guida */ 37*b6cbf720SGianluca Guida 38*b6cbf720SGianluca Guida#include <machine/asm.h> 39*b6cbf720SGianluca Guida#if defined(LIBC_SCCS) && !defined(lint) 40*b6cbf720SGianluca Guida RCSID("$NetBSD: saveregs.S,v 1.1 2005/12/20 19:28:50 christos Exp $") 41*b6cbf720SGianluca Guida#endif /* LIBC_SCCS and not lint */ 42*b6cbf720SGianluca Guida 43*b6cbf720SGianluca Guida/* 44*b6cbf720SGianluca Guida * Save register arguments in caller's `arg dump' area, so that 45*b6cbf720SGianluca Guida * stdarg functions work. 46*b6cbf720SGianluca Guida * 47*b6cbf720SGianluca Guida * This really should be done with a pointer to the arg dump area; 48*b6cbf720SGianluca Guida * our caller should allocate that area, not our caller's caller. 49*b6cbf720SGianluca Guida * But then, they did not let me invent the calling sequence.... 50*b6cbf720SGianluca Guida * 51*b6cbf720SGianluca Guida * We assume the caller has executed a `save' instruction. 52*b6cbf720SGianluca Guida */ 53*b6cbf720SGianluca Guida 54*b6cbf720SGianluca GuidaENTRY(__builtin_saveregs) 55*b6cbf720SGianluca Guida st %i0, [%fp + 0x44] ! fr->fr_argd[0] 56*b6cbf720SGianluca Guida st %i1, [%fp + 0x48] ! fr->fr_argd[1] 57*b6cbf720SGianluca Guida st %i2, [%fp + 0x4c] ! fr->fr_argd[2] 58*b6cbf720SGianluca Guida st %i3, [%fp + 0x50] ! fr->fr_argd[3] 59*b6cbf720SGianluca Guida st %i4, [%fp + 0x54] ! fr->fr_argd[4] 60*b6cbf720SGianluca Guida retl 61*b6cbf720SGianluca Guida st %i5, [%fp + 0x58] ! fr->fr_argd[5] 62