1/* $OpenBSD: md_init.h,v 1.10 2023/11/18 16:26:16 deraadt Exp $ */
2
3/*-
4 * Copyright (c) 2001 Ross Harvey
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by the NetBSD
18 *      Foundation, Inc. and its contributors.
19 * 4. Neither the name of The NetBSD Foundation nor the names of its
20 *    contributors may be used to endorse or promote products derived
21 *    from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35
36#define MD_SECT_CALL_FUNC(section, func) \
37	__asm (".section "#section", \"ax\"	\n" \
38	"	call " #func ", 0		\n" \
39	"	 nop				\n" \
40	"	.previous")
41
42#define MD_SECTION_PROLOGUE(sect, entry_pt)	\
43	__asm (					\
44	".section "#sect",\"ax\",@progbits	\n" \
45	"	.globl " #entry_pt "		\n" \
46	"	.type " #entry_pt ",@function	\n" \
47	#entry_pt":				\n" \
48	"	save	%sp, -192, %sp		\n" \
49	"	.align 4			\n" \
50	"	/* fall thru */			\n" \
51	"	.previous")
52
53
54#define MD_SECTION_EPILOGUE(sect)		\
55	__asm (					\
56	".section "#sect",\"ax\",@progbits	\n" \
57	"	ret				\n" \
58	"	 restore			\n" \
59	"	.previous")
60
61
62#define	MD_CRT0_START				\
63	__asm__(				\
64	".text					\n" \
65	"	.align	4			\n" \
66	"	.global	_start			\n" \
67	"	.global	__start			\n" \
68	"_start:				\n" \
69	"__start:				\n" \
70	"	clr	%fp			\n" \
71	"	add	%sp, 2175, %o0	/* stack */\n" \
72	"	ba,pt	%icc, ___start		\n" \
73	"	 mov	%g1, %o1		\n" \
74	"	.previous")
75
76#define	MD_RCRT0_START				\
77	__asm__(				\
78	".text					\n" \
79	"	.align	4			\n" \
80	"	.global	_start			\n" \
81	"	.global	__start			\n" \
82	"_start:				\n" \
83	"__start:				\n" \
84	"	clr	%fp			\n" \
85	"	sub	%sp, 48 + 16*8, %sp	\n" \
86	"	add	%sp, 2223, %l3 		\n" \
87	"	add	%l3, 16*8, %o0		\n" \
88	"	mov	%o0, %l0		\n" \
89	"	call	0f			\n" \
90	"	 nop				\n" \
91	"	call	_DYNAMIC+8		\n" \
92	"0:	ld	[%o7+8], %o2		\n" \
93	"	sll	%o2, 2, %o2		\n" \
94	"	sra	%o2, 0, %o2		\n" \
95	"	add	%o2, %o7, %o2		\n" \
96	"	call	_dl_boot_bind		\n" \
97	"	 mov	%l3, %o1		\n" \
98	"	add	%sp, 48 + 16*8, %sp	\n" \
99	"	add	%sp, 2175, %o0	/* stack */\n" \
100	"	ba,pt	%icc, ___start		\n" \
101	"	 clr	%o1			\n" \
102	"					\n" \
103	"	.global	_csu_abort		\n" \
104	"_csu_abort:				\n" \
105	"	unimp				\n" \
106	"	.previous")
107
108
109#define	MD_START_ARGS		char **sp, void (*cleanup)(void)
110#define	MD_START_SETUP				\
111	char **argv, **envp;			\
112	long argc;				\
113						\
114	argc = *(long *)sp;			\
115	argv = sp + 1;				\
116	envp = sp + 2 + argc;		/* 2: argc + NULL ending argv */
117