sys/i386/ibcs2/ibcs2_sysi86.c

   1 /*-
   2  * Copyright (c) 1994 Søren 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("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/lock.h>
  35 #include <sys/mutex.h>
  36 #include <sys/systm.h>
  37 #include <sys/sysctl.h>
  38
  39 #include <i386/ibcs2/ibcs2_types.h>
  40 #include <i386/ibcs2/ibcs2_signal.h>
  41 #include <i386/ibcs2/ibcs2_util.h>
  42 #include <i386/ibcs2/ibcs2_proto.h>
  43
  44 #define IBCS2_FP_NO     0       /* no fp support */
  45 #define IBCS2_FP_SW     1       /* software emulator */
  46 #define IBCS2_FP_287    2       /* 80287 FPU */
  47 #define IBCS2_FP_387    3       /* 80387 FPU */
  48
  49 #define SI86_FPHW       40
  50 #define STIME           54
  51 #define SETNAME         56
  52 #define SI86_MEM        65
  53
  54 extern int hw_float;
  55
  56 int
  57 ibcs2_sysi86(struct thread *td, struct ibcs2_sysi86_args *args)
  58 {
  59         switch (args->cmd) {
  60         case SI86_FPHW: {       /* Floating Point information */
  61                 int val, error;
  62
  63                 if (hw_float)
  64                         val = IBCS2_FP_387;
  65                 else
  66                         val = IBCS2_FP_NO;
  67                 if ((error = copyout(&val, args->arg, sizeof(val))) != 0)
  68                         return error;
  69                 return 0;
  70                 }
  71
  72         case STIME:       /* set the system time given pointer to long */
  73           /* gettimeofday; time.tv_sec = *args->arg; settimeofday */
  74                 return EINVAL;
  75
  76         case SETNAME:  {  /* set hostname given string w/ len <= 7 chars */
  77                 int name[2];
  78
  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, 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 }