63 lines
2.7 KiB
ArmAsm
63 lines
2.7 KiB
ArmAsm
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/* $NetBSD: saveregs.S,v 1.1 2005/12/20 19:28:50 christos Exp $ */
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/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Header: saveregs.s,v 1.1 91/07/06 17:22:33 torek Exp
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*/
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#include <machine/asm.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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RCSID("$NetBSD: saveregs.S,v 1.1 2005/12/20 19:28:50 christos Exp $")
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#endif /* LIBC_SCCS and not lint */
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/*
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* Save register arguments in caller's `arg dump' area, so that
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* stdarg functions work.
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*
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* This really should be done with a pointer to the arg dump area;
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* our caller should allocate that area, not our caller's caller.
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* But then, they did not let me invent the calling sequence....
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*
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* We assume the caller has executed a `save' instruction.
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*/
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#define REGOFF (BIAS - CC64FSZ)
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ENTRY(__builtin_saveregs)
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stx %i0, [%fp + REGOFF + 0x00] ! fr->fr_argd[0]
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stx %i1, [%fp + REGOFF + 0x08] ! fr->fr_argd[1]
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stx %i2, [%fp + REGOFF + 0x10] ! fr->fr_argd[2]
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stx %i3, [%fp + REGOFF + 0x18] ! fr->fr_argd[3]
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stx %i4, [%fp + REGOFF + 0x20] ! fr->fr_argd[4]
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retl
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stx %i5, [%fp + REGOFF + 0x28] ! fr->fr_argd[5]
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