1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* $OpenBSD: bsdos_exec.c,v 1.5 2009/03/05 19:52:23 kettenis Exp $ */
/*
* Copyright (c) 1993, 1994 Christopher G. Demetriou
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/malloc.h>
#include <sys/vnode.h>
#include <sys/core.h>
#include <sys/exec.h>
#include <sys/resourcevar.h>
#include <uvm/uvm_extern.h>
#if 0
#include <machine/bsdos_machdep.h>
#endif
#include <compat/bsdos/bsdos_exec.h>
#include <compat/bsdos/bsdos_syscall.h>
extern struct sysent bsdos_sysent[];
#ifdef SYSCALL_DEBUG
extern char *bsdos_syscallnames[];
#endif
extern char sigcode[], esigcode[];
struct emul emul_bsdos = {
"bsdos",
NULL,
sendsig,
BSDOS_SYS_syscall,
BSDOS_SYS_MAXSYSCALL,
bsdos_sysent,
#ifdef SYSCALL_DEBUG
bsdos_syscallnames,
#else
NULL,
#endif
0,
copyargs,
setregs,
NULL,
coredump_trad,
sigcode,
esigcode,
};
/*
* exec_aout_makecmds(): Check if it's an a.out-format executable.
*
* Given a proc pointer and an exec package pointer, see if the referent
* of the epp is in a.out format. First check 'standard' magic numbers for
* this architecture. If that fails, try a cpu-dependent hook.
*
* This function, in the former case, or the hook, in the latter, is
* responsible for creating a set of vmcmds which can be used to build
* the process's vm space and inserting them into the exec package.
*/
int
exec_bsdos_aout_makecmds(p, epp)
struct proc *p;
struct exec_package *epp;
{
u_long midmag, magic;
u_short mid;
int error = ENOEXEC;
struct exec *execp = epp->ep_hdr;
if (epp->ep_hdrvalid < sizeof(struct exec))
return ENOEXEC;
midmag = ntohl(execp->a_midmag);
mid = (midmag >> 16) & 0xffff;
magic = midmag & 0xffff;
if (magic == 0) {
magic = (execp->a_midmag & 0xffff);
mid = MID_BSDOS;
}
midmag = mid << 16 | magic;
switch (midmag) {
case (MID_BSDOS << 16) | ZMAGIC:
/*
* 386BSD's ZMAGIC format:
*/
error = exec_aout_prep_oldzmagic(p, epp);
break;
case (MID_BSDOS << 16) | QMAGIC:
/*
* BSDI's QMAGIC format:
* same as new ZMAGIC format, but with different magic number.
*/
error = exec_aout_prep_zmagic(p, epp);
break;
case (MID_BSDOS << 16) | NMAGIC:
/*
* BSDI's NMAGIC format:
* same as NMAGIC format, but with different magic number
* and with text starting at 0.
*/
error = exec_aout_prep_oldnmagic(p, epp);
break;
case (MID_BSDOS << 16) | OMAGIC:
/*
* BSDI's OMAGIC format:
* same as OMAGIC format, but with different magic number
* and with text starting at 0.
*/
error = exec_aout_prep_oldomagic(p, epp);
break;
}
if (error == 0)
epp->ep_emul = &emul_bsdos;
else
kill_vmcmds(&epp->ep_vmcmds);
return error;
}
|
