ibcs2_sysi86.c revision 83366 
1/*-
2 * Copyright (c) 1994 S�ren Schmidt
3 * Copyright (c) 1995 Steven Wallace
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer
11 *    in this position and unchanged.
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 withough 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, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD: head/sys/i386/ibcs2/ibcs2_sysi86.c 83366 2001-09-12 08:38:13Z julian $
30 */
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/sysctl.h>
35
36#include <i386/ibcs2/ibcs2_types.h>
37#include <i386/ibcs2/ibcs2_signal.h>
38#include <i386/ibcs2/ibcs2_util.h>
39#include <i386/ibcs2/ibcs2_proto.h>
40
41#define IBCS2_FP_NO     0       /* no fp support */
42#define IBCS2_FP_SW     1       /* software emulator */
43#define IBCS2_FP_287    2       /* 80287 FPU */
44#define IBCS2_FP_387    3       /* 80387 FPU */
45
46#define SI86_FPHW	40
47#define STIME		54
48#define SETNAME		56
49#define SI86_MEM	65
50
51extern int hw_float;
52
53int
54ibcs2_sysi86(struct thread *td, struct ibcs2_sysi86_args *args)
55{
56	switch (SCARG(args, cmd)) {
57	case SI86_FPHW: {	/* Floating Point information */
58		int val, error;
59
60		if (hw_float) val = IBCS2_FP_387;	/* FPU hardware */
61		else val = IBCS2_FP_SW;			/* FPU emulator */
62
63		if ((error = copyout(&val, SCARG(args, arg), sizeof(val))) != 0)
64			return error;
65		return 0;
66		}
67
68        case STIME:       /* set the system time given pointer to long */
69	  /* gettimeofday; time.tv_sec = *args->arg; settimeofday */
70	        return EINVAL;
71
72	case SETNAME:  {  /* set hostname given string w/ len <= 7 chars */
73	        int name[2];
74	        int error;
75
76		if ((error = suser_td(td)))
77		  return (error);
78		name[0] = CTL_KERN;
79		name[1] = KERN_HOSTNAME;
80		return (userland_sysctl(td, name, 2, 0, 0, 0,
81			SCARG(args, arg), 7, 0));
82	}
83
84	case SI86_MEM:	/* size of physical memory */
85		td->td_retval[0] = ctob(physmem);
86		return 0;
87
88	default:
89#ifdef DIAGNOSTIC
90		printf("IBCS2: 'sysi86' function %d(0x%x) "
91			"not implemented yet\n", SCARG(args, cmd), args->cmd);
92#endif
93		return EINVAL;
94	}
95}
96