netbsd32_exec.h revision 1.12 
1/*	$NetBSD: netbsd32_exec.h,v 1.12 2002/08/26 21:06:02 christos Exp $	*/
2
3/*
4 * Copyright (c) 1998, 2001 Matthew R. Green
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. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#ifndef	_NETBSD32_EXEC_H_
32#define	_NETBSD32_EXEC_H_
33
34#include <compat/netbsd32/netbsd32.h>
35
36/* from <sys/exec_aout.h> */
37/*
38 * Header prepended to each a.out file.
39 * only manipulate the a_midmag field via the
40 * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below.
41 */
42struct netbsd32_exec {
43	netbsd32_u_long	a_midmag;	/* htonl(flags<<26 | mid<<16 | magic) */
44	netbsd32_u_long	a_text;		/* text segment size */
45	netbsd32_u_long	a_data;		/* initialized data size */
46	netbsd32_u_long	a_bss;		/* uninitialized data size */
47	netbsd32_u_long	a_syms;		/* symbol table size */
48	netbsd32_u_long	a_entry;	/* entry point */
49	netbsd32_u_long	a_trsize;	/* text relocation size */
50	netbsd32_u_long	a_drsize;	/* data relocation size */
51};
52
53extern const struct emul emul_netbsd32;
54
55#ifdef EXEC_AOUT
56int netbsd32_exec_aout_prep_zmagic __P((struct proc *, struct exec_package *));
57int netbsd32_exec_aout_prep_nmagic __P((struct proc *, struct exec_package *));
58int netbsd32_exec_aout_prep_omagic __P((struct proc *, struct exec_package *));
59int exec_netbsd32_makecmds __P((struct proc *, struct exec_package *));
60#endif
61#ifdef EXEC_ELF32
62int netbsd32_elf32_probe __P((struct proc *, struct exec_package *, void *,
63    char *, vaddr_t *));
64int netbsd32_elf32_probe_noteless __P((struct proc *, struct exec_package *,
65    void *, char *, vaddr_t *));
66int netbsd32_elf32_copyargs __P((struct proc *, struct exec_package *,
67    struct ps_strings *, char **, void *));
68#endif /* EXEC_ELF32 */
69
70static __inline int netbsd32_copyargs __P((struct proc *, struct exec_package *,
71    struct ps_strings *, char **, void *));
72
73/*
74 * We need to copy out all pointers as 32-bit values.
75 */
76static __inline int
77netbsd32_copyargs(p, pack, arginfo, stackp, argp)
78	struct proc *p;
79	struct exec_package *pack;
80	struct ps_strings *arginfo;
81	char **stackp;
82	void *argp;
83{
84	u_int32_t *cpp = (u_int32_t *)*stackp;
85	u_int32_t dp;
86	u_int32_t nullp = 0;
87	char *sp;
88	size_t len;
89	int argc = arginfo->ps_nargvstr;
90	int envc = arginfo->ps_nenvstr;
91	int error;
92
93	if ((error = copyout(&argc, cpp++, sizeof(argc))) != 0)
94		return error;
95
96	dp = (u_long) (cpp + argc + envc + 2 + pack->ep_esch->es_arglen);
97	sp = argp;
98
99	/* XXX don't copy them out, remap them! */
100	/* remember location of argv for later */
101	arginfo->ps_argvstr = (char **)(u_long)cpp;
102
103	for (; --argc >= 0; sp += len, dp += len) {
104		if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0 ||
105		    (error = copyoutstr(sp, (char *)(u_long)dp,
106		    ARG_MAX, &len)) != 0)
107			return error;
108	}
109	if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
110		return error;
111
112	/* remember location of envp for later */
113	arginfo->ps_envstr = (char **)(u_long)cpp;
114
115	for (; --envc >= 0; sp += len, dp += len) {
116		if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0 ||
117		    (error = copyoutstr(sp, (char *)(u_long)dp,
118		    ARG_MAX, &len)) != 0)
119			return error;
120	}
121	if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
122		return error;
123
124	*stackp = (char *)cpp;
125	return 0;
126}
127
128#endif /* !_NETBSD32_EXEC_H_ */
129