xref: /freebsd/sys/amd64/ia32/ia32_misc.c (revision bae28eaa8d26ddd67e9af51979f1a54599e9b3a8)
1 /*-
2  * Copyright (c) 2009 Konstantin Belousov
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  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include "opt_compat.h"
31 
32 #include <sys/param.h>
33 #include <sys/mount.h>
34 #include <sys/proc.h>
35 #include <sys/socket.h>
36 #include <sys/sysent.h>
37 #include <sys/sysproto.h>
38 #include <sys/systm.h>
39 #include <sys/uio.h>
40 
41 #include <machine/cpu.h>
42 #include <machine/sysarch.h>
43 
44 #include <compat/freebsd32/freebsd32_util.h>
45 #include <compat/freebsd32/freebsd32.h>
46 #include <compat/freebsd32/freebsd32_proto.h>
47 
48 int
49 freebsd32_sysarch(struct thread *td, struct freebsd32_sysarch_args *uap)
50 {
51 	struct sysarch_args uap1;
52 	struct i386_ldt_args uapl;
53 	struct i386_ldt_args32 uapl32;
54 	int error;
55 
56 	if (uap->op == I386_SET_LDT || uap->op == I386_GET_LDT) {
57 		if ((error = copyin(uap->parms, &uapl32, sizeof(uapl32))) != 0)
58 			return (error);
59 		uap1.op = uap->op;
60 		uap1.parms = (char *)&uapl;
61 		uapl.start = uapl32.start;
62 		uapl.descs = (struct user_segment_descriptor *)(uintptr_t)
63 		    uapl32.descs;
64 		uapl.num = uapl32.num;
65 		return (sysarch_ldt(td, &uap1, UIO_SYSSPACE));
66 	} else {
67 		uap1.op = uap->op;
68 		uap1.parms = uap->parms;
69 		return (sysarch(td, &uap1));
70 	}
71 }
72 
73 #ifdef COMPAT_43
74 int
75 ofreebsd32_getpagesize(struct thread *td,
76     struct ofreebsd32_getpagesize_args *uap)
77 {
78 
79 	td->td_retval[0] = IA32_PAGE_SIZE;
80 	return (0);
81 }
82 #endif
83