1 /*
2 * Copyright (c) 1995 Steven Wallace
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Steven Wallace.
16 * 4. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * $FreeBSD: releng/5.0/sys/i386/ibcs2/ibcs2_sysvec.c 102808 2002-09-01 21:41:24Z jake $
31 */
32
33 #include <sys/param.h>
34 #include <sys/kernel.h>
35 #include <sys/systm.h>
36 #include <sys/exec.h>
37 #include <sys/imgact.h>
38 #include <sys/lock.h>
39 #include <sys/module.h>
40 #include <sys/sysent.h>
41 #include <sys/signalvar.h>
42 #include <sys/proc.h>
43 #include <sys/sx.h>
44
45 #include <vm/vm.h>
46 #include <vm/pmap.h>
47 #include <vm/vm_param.h>
48
49 #include <i386/ibcs2/ibcs2_syscall.h>
50 #include <i386/ibcs2/ibcs2_signal.h>
51
52 MODULE_VERSION(ibcs2, 1);
53
54 extern int bsd_to_ibcs2_errno[];
55 extern struct sysent ibcs2_sysent[IBCS2_SYS_MAXSYSCALL];
56 extern int szsigcode;
57 extern char sigcode[];
58 static int ibcs2_fixup(register_t **, struct image_params *);
59
60 struct sysentvec ibcs2_svr3_sysvec = {
61 sizeof (ibcs2_sysent) / sizeof (ibcs2_sysent[0]),
62 ibcs2_sysent,
63 0xFF,
64 IBCS2_SIGTBLSZ,
65 bsd_to_ibcs2_sig,
66 ELAST + 1,
67 bsd_to_ibcs2_errno,
68 NULL, /* trap-to-signal translation function */
69 ibcs2_fixup, /* fixup */
70 sendsig,
71 sigcode, /* use generic trampoline */
72 &szsigcode, /* use generic trampoline size */
73 NULL, /* prepsyscall */
74 "IBCS2 COFF",
75 NULL, /* we don't have a COFF coredump function */
76 NULL,
77 IBCS2_MINSIGSTKSZ,
78 PAGE_SIZE,
79 VM_MIN_ADDRESS,
80 VM_MAXUSER_ADDRESS,
81 USRSTACK,
82 PS_STRINGS,
83 VM_PROT_ALL,
84 exec_copyout_strings,
85 exec_setregs
86 };
87
88 static int
89 ibcs2_fixup(register_t **stack_base, struct image_params *imgp)
90 {
91
92 return (suword(--(*stack_base), imgp->argc));
93 }
94
95 /*
96 * Create an "ibcs2" module that does nothing but allow checking for
97 * the presence of the subsystem.
98 */
99 static int
100 ibcs2_modevent(module_t mod, int type, void *unused)
101 {
102 struct proc *p = NULL;
103 int rval = 0;
104
105 switch(type) {
106 case MOD_UNLOAD:
107 /* if this was an ELF module we'd use elf_brand_inuse()... */
108 sx_slock(&allproc_lock);
109 LIST_FOREACH(p, &allproc, p_list) {
110 if (p->p_sysent == &ibcs2_svr3_sysvec) {
111 rval = EBUSY;
112 break;
113 }
114 }
115 sx_sunlock(&allproc_lock);
116 default:
117 /* do not care */
118 break;
119 }
120 return (rval);
121 }
122 static moduledata_t ibcs2_mod = {
123 "ibcs2",
124 ibcs2_modevent,
125 0
126 };
127 DECLARE_MODULE(ibcs2, ibcs2_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
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