1/*	$NetBSD: rtld_start.S,v 1.4 1999/03/01 14:40:32 christos Exp $	*/
2
3/*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas and Paul Kranenburg.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 *    must display the following acknowledgement:
20 *        This product includes software developed by the NetBSD
21 *        Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 *    contributors may be used to endorse or promote products derived
24 *    from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#include <machine/asm.h>
40
41	.section	".text"
42	.align	4
43	.global	_rtld_start
44	.type	_rtld_start,@function
45_rtld_start:
46	mov	0, %fp			/* Erect a fence post for ourselves */
47	mov	%g1, %l1		/* save ps_strings */
48	sub	%sp, 8, %sp		/* Make room for return args */
49
50	call	_rtld
51	 add	%sp, 64, %o0		/* &argc - 8 */
52
53	ld	[%sp + 64], %g3		/* arg: cleanup */
54	ld	[%sp + 64 + 4], %g2	/* arg: obj */
55	add	%sp, 8, %sp		/* restore stack pointer */
56
57	jmp	%o0
58	 mov	%l1, %g1		/* restore ps_strings */
59
60
61	.section	".text"
62	.align	4
63	.global	_rtld_bind_start
64	.type	_rtld_bind_start,@function
65_rtld_bind_start:	# (obj, reloff)
66	save	%sp, -96, %sp		/* setup standard stack frame */
67	ld	[%i7 + 8], %o0		/* obj id is in second PLT slot */
68	srl	%g1, 10, %o1		/* offset is in high 22 bits */
69	call	_rtld_bind		/* Call _rtld_bind(obj, offset) */
70	 sub	%o1, 12*4, %o1		/* first 4 `pltrel' entries missing! */
71
72	mov	%o0, %g1		/* return value == function address */
73	restore				/* get rid of our context */
74	 jmp	%g1			/* and the jmpslot context, then go. */
75	restore
76
77