freebsd-dev/sys/i386/ibcs2/ibcs2_sysi86.c
John Baldwin 3a915d149c FreeBSD/i386 doesn't include a software FPU emulator anymore, so adjust
an iBCS2 syscall to indicate that there is no FPU support at all rather
than emulated support if an FPU is not present.
2009-02-23 15:38:35 +00:00

97 lines
3.0 KiB
C

/*-
* Copyright (c) 1994 Søren Schmidt
* Copyright (c) 1995 Steven Wallace
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <i386/ibcs2/ibcs2_types.h>
#include <i386/ibcs2/ibcs2_signal.h>
#include <i386/ibcs2/ibcs2_util.h>
#include <i386/ibcs2/ibcs2_proto.h>
#define IBCS2_FP_NO 0 /* no fp support */
#define IBCS2_FP_SW 1 /* software emulator */
#define IBCS2_FP_287 2 /* 80287 FPU */
#define IBCS2_FP_387 3 /* 80387 FPU */
#define SI86_FPHW 40
#define STIME 54
#define SETNAME 56
#define SI86_MEM 65
extern int hw_float;
int
ibcs2_sysi86(struct thread *td, struct ibcs2_sysi86_args *args)
{
switch (args->cmd) {
case SI86_FPHW: { /* Floating Point information */
int val, error;
if (hw_float)
val = IBCS2_FP_387;
else
val = IBCS2_FP_NO;
if ((error = copyout(&val, args->arg, sizeof(val))) != 0)
return error;
return 0;
}
case STIME: /* set the system time given pointer to long */
/* gettimeofday; time.tv_sec = *args->arg; settimeofday */
return EINVAL;
case SETNAME: { /* set hostname given string w/ len <= 7 chars */
int name[2];
name[0] = CTL_KERN;
name[1] = KERN_HOSTNAME;
return (userland_sysctl(td, name, 2, 0, 0, 0,
args->arg, 7, 0, 0));
}
case SI86_MEM: /* size of physical memory */
td->td_retval[0] = ctob(physmem);
return 0;
default:
#ifdef DIAGNOSTIC
printf("IBCS2: 'sysi86' function %d(0x%x) "
"not implemented yet\n", args->cmd, args->cmd);
#endif
return EINVAL;
}
}