netbsd32_exec.h revision 1.36 
1/*	$NetBSD: netbsd32_exec.h,v 1.36 2021/01/19 02:40:07 simonb 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef	_NETBSD32_EXEC_H_
30#define	_NETBSD32_EXEC_H_
31
32#include <compat/netbsd32/netbsd32.h>
33
34#ifdef EXEC_AOUT
35#include <sys/exec_aout.h>
36#endif
37
38/* from <sys/exec_aout.h> */
39/*
40 * Header prepended to each a.out file.
41 * only manipulate the a_midmag field via the
42 * N_SETMAGIC/N_GET{MAGIC,MID,FLAG} macros below.
43 */
44struct netbsd32_exec {
45	netbsd32_u_long	a_midmag;	/* htonl(flags<<26 | mid<<16 | magic) */
46	netbsd32_u_long	a_text;		/* text segment size */
47	netbsd32_u_long	a_data;		/* initialized data size */
48	netbsd32_u_long	a_bss;		/* uninitialized data size */
49	netbsd32_u_long	a_syms;		/* symbol table size */
50	netbsd32_u_long	a_entry;	/* entry point */
51	netbsd32_u_long	a_trsize;	/* text relocation size */
52	netbsd32_u_long	a_drsize;	/* data relocation size */
53};
54
55#ifdef EXEC_AOUT
56int netbsd32_exec_aout_prep_zmagic(struct lwp *, struct exec_package *);
57int netbsd32_exec_aout_prep_nmagic(struct lwp *, struct exec_package *);
58int netbsd32_exec_aout_prep_omagic(struct lwp *, struct exec_package *);
59int exec_netbsd32_makecmds(struct lwp *, struct exec_package *);
60#endif
61#ifdef EXEC_ELF32
62int netbsd32_elf32_probe(struct lwp *, struct exec_package *, void *,
63    char *, vaddr_t *);
64int netbsd32_elf32_probe_noteless(struct lwp *, struct exec_package *,
65    void *, char *, vaddr_t *);
66int netbsd32_elf32_copyargs(struct lwp *, struct exec_package *,
67    struct ps_strings *, char **, void *);
68#endif /* EXEC_ELF32 */
69
70static __inline int netbsd32_copyargs(struct lwp *, struct exec_package *,
71    struct ps_strings *, char **, void *);
72
73void netbsd32_setregs(struct lwp *, struct exec_package *, vaddr_t stack);
74int netbsd32_sigreturn(struct proc *, void *, register_t *);
75void netbsd32_sendsig(const ksiginfo_t *, const sigset_t *);
76
77extern char netbsd32_esigcode[], netbsd32_sigcode[];
78
79/*
80 * We need to copy out all pointers as 32-bit values.
81 */
82static __inline int
83netbsd32_copyargs(struct lwp *l, struct exec_package *pack,
84		struct ps_strings *arginfo, char **stackp, void *argp)
85{
86	uint32_t *cpp = (uint32_t *)*stackp;
87	netbsd32_pointer_t dp;
88	uint32_t nullp = 0;
89	char *sp;
90	size_t len;
91	int argc = arginfo->ps_nargvstr;
92	int envc = arginfo->ps_nenvstr;
93	int error;
94
95	NETBSD32PTR32(dp, (char *)(cpp +
96	    1 +				/* int argc */
97	    argc +			/* char *argv[] */
98	    1 +				/* \0 */
99	    envc +			/* char *env[] */
100	    1) +			/* \0 */
101	    pack->ep_esch->es_arglen);	/* auxinfo */
102	sp = argp;
103
104	if ((error = copyout(&argc, cpp++, sizeof(argc))) != 0)
105		return error;
106
107	/* XXX don't copy them out, remap them! */
108	/* remember location of argv for later */
109	arginfo->ps_argvstr = (char **)(u_long)cpp;
110
111	for (; --argc >= 0; sp += len, NETBSD32PTR32PLUS(dp, len)) {
112		if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0)
113			return error;
114		if ((error = copyoutstr(sp, NETBSD32PTR64(dp),
115		    ARG_MAX, &len)) != 0)
116			return error;
117	}
118	if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
119		return error;
120
121	/* remember location of envp for later */
122	arginfo->ps_envstr = (char **)(u_long)cpp;
123
124	for (; --envc >= 0; sp += len, NETBSD32PTR32PLUS(dp, len)) {
125		if ((error = copyout(&dp, cpp++, sizeof(dp))) != 0)
126			return error;
127		if ((error = copyoutstr(sp, NETBSD32PTR64(dp),
128		    ARG_MAX, &len)) != 0)
129			return error;
130	}
131	if ((error = copyout(&nullp, cpp++, sizeof(nullp))) != 0)
132		return error;
133
134	*stackp = (char *)cpp;
135	return 0;
136}
137
138#endif /* !_NETBSD32_EXEC_H_ */
139