ibcs2_sysi86.c revision 115684 
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 without 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
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/sys/i386/ibcs2/ibcs2_sysi86.c 115684 2003-06-02 06:48:51Z obrien $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/sysctl.h>
36
37#include <i386/ibcs2/ibcs2_types.h>
38#include <i386/ibcs2/ibcs2_signal.h>
39#include <i386/ibcs2/ibcs2_util.h>
40#include <i386/ibcs2/ibcs2_proto.h>
41
42#define IBCS2_FP_NO     0       /* no fp support */
43#define IBCS2_FP_SW     1       /* software emulator */
44#define IBCS2_FP_287    2       /* 80287 FPU */
45#define IBCS2_FP_387    3       /* 80387 FPU */
46
47#define SI86_FPHW	40
48#define STIME		54
49#define SETNAME		56
50#define SI86_MEM	65
51
52extern int hw_float;
53
54int
55ibcs2_sysi86(struct thread *td, struct ibcs2_sysi86_args *args)
56{
57	switch (args->cmd) {
58	case SI86_FPHW: {	/* Floating Point information */
59		int val, error;
60
61		if (hw_float) val = IBCS2_FP_387;	/* FPU hardware */
62		else val = IBCS2_FP_SW;			/* FPU emulator */
63
64		if ((error = copyout(&val, args->arg, sizeof(val))) != 0)
65			return error;
66		return 0;
67		}
68
69        case STIME:       /* set the system time given pointer to long */
70	  /* gettimeofday; time.tv_sec = *args->arg; settimeofday */
71	        return EINVAL;
72
73	case SETNAME:  {  /* set hostname given string w/ len <= 7 chars */
74	        int name[2];
75	        int error;
76
77		if ((error = suser(td)))
78		  return (error);
79		name[0] = CTL_KERN;
80		name[1] = KERN_HOSTNAME;
81		return (userland_sysctl(td, name, 2, 0, 0, 0,
82			args->arg, 7, 0));
83	}
84
85	case SI86_MEM:	/* size of physical memory */
86		td->td_retval[0] = ctob(physmem);
87		return 0;
88
89	default:
90#ifdef DIAGNOSTIC
91		printf("IBCS2: 'sysi86' function %d(0x%x) "
92			"not implemented yet\n", args->cmd, args->cmd);
93#endif
94		return EINVAL;
95	}
96}
97