160484Sobrien/* $NetBSD: saveregs.S,v 1.4 2003/08/07 16:42:23 agc Exp $ */ 289857Sobrien 360484Sobrien/* 460484Sobrien * Copyright (c) 1992, 1993 560484Sobrien * The Regents of the University of California. All rights reserved. 660484Sobrien * 760484Sobrien * This software was developed by the Computer Systems Engineering group 860484Sobrien * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 960484Sobrien * contributed to Berkeley. 1060484Sobrien * 1160484Sobrien * Redistribution and use in source and binary forms, with or without 1260484Sobrien * modification, are permitted provided that the following conditions 1360484Sobrien * are met: 1460484Sobrien * 1. Redistributions of source code must retain the above copyright 1560484Sobrien * notice, this list of conditions and the following disclaimer. 1660484Sobrien * 2. Redistributions in binary form must reproduce the above copyright 1760484Sobrien * notice, this list of conditions and the following disclaimer in the 1860484Sobrien * documentation and/or other materials provided with the distribution. 1960484Sobrien * 3. Neither the name of the University nor the names of its contributors 2060484Sobrien * may be used to endorse or promote products derived from this software 2160484Sobrien * without specific prior written permission. 2260484Sobrien * 2360484Sobrien * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2460484Sobrien * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2560484Sobrien * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2660484Sobrien * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2760484Sobrien * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2860484Sobrien * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2960484Sobrien * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3060484Sobrien * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3160484Sobrien * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3260484Sobrien * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3360484Sobrien * SUCH DAMAGE. 3460484Sobrien * 3560484Sobrien * from: Header: saveregs.s,v 1.1 91/07/06 17:22:33 torek Exp 3660484Sobrien */ 3760484Sobrien 3860484Sobrien#include <machine/asm.h> 3960484Sobrien#if defined(LIBC_SCCS) && !defined(lint) 4060484Sobrien RCSID("$NetBSD: saveregs.S,v 1.4 2003/08/07 16:42:23 agc Exp $") 4160484Sobrien#endif /* LIBC_SCCS and not lint */ 4260484Sobrien 4360484Sobrien/* 4460484Sobrien * Save register arguments in caller's `arg dump' area, so that 4560484Sobrien * stdarg functions work. 4660484Sobrien * 4760484Sobrien * This really should be done with a pointer to the arg dump area; 4860484Sobrien * our caller should allocate that area, not our caller's caller. 4960484Sobrien * But then, they did not let me invent the calling sequence.... 5060484Sobrien * 5160484Sobrien * We assume the caller has executed a `save' instruction. 5260484Sobrien */ 5360484Sobrien 5460484SobrienENTRY(__builtin_saveregs) 5560484Sobrien st %i0, [%fp + 0x44] ! fr->fr_argd[0] 5660484Sobrien st %i1, [%fp + 0x48] ! fr->fr_argd[1] 5777298Sobrien st %i2, [%fp + 0x4c] ! fr->fr_argd[2] 5860484Sobrien st %i3, [%fp + 0x50] ! fr->fr_argd[3] 5960484Sobrien st %i4, [%fp + 0x54] ! fr->fr_argd[4] 6060484Sobrien retl 6160484Sobrien st %i5, [%fp + 0x58] ! fr->fr_argd[5] 6277298Sobrien