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/*-
* Copyright (c) 1990 The Regents of the University of California.
* 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.
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from: @(#)sys_machdep.c 5.5 (Berkeley) 1/19/91
* $FreeBSD$
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sysent.h>
#include <sys/sysproto.h>
#include <sys/user.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_extern.h>
#include <machine/cpu.h>
#include <machine/sysarch.h>
#include <vm/vm_kern.h> /* for kernel_map */
#include <machine/fpu.h>
#ifndef _SYS_SYSPROTO_H_
struct sysarch_args {
int op;
char *parms;
};
#endif
static int alpha_sethae(struct thread *td, char *args);
static int alpha_get_fpmask(struct thread *td, char *args);
static int alpha_set_fpmask(struct thread *td, char *args);
static int alpha_set_uac(struct thread *td, char *args);
static int alpha_get_uac(struct thread *td, char *args);
int
sysarch(td, uap)
struct thread *td;
register struct sysarch_args *uap;
{
int error = 0;
switch(SCARG(uap,op)) {
case ALPHA_SETHAE:
error = alpha_sethae(td, uap->parms);
break;
case ALPHA_GET_FPMASK:
error = alpha_get_fpmask(td, uap->parms);
break;
case ALPHA_SET_FPMASK:
error = alpha_set_fpmask(td, uap->parms);
break;
case ALPHA_SET_UAC:
error = alpha_set_uac(td, uap->parms);
break;
case ALPHA_GET_UAC:
error = alpha_get_uac(td, uap->parms);
break;
default:
error = EINVAL;
break;
}
return (error);
}
struct alpha_sethae_args {
u_int64_t hae;
};
static int
alpha_sethae(struct thread *td, char *args)
{
int error;
struct alpha_sethae_args ua;
error = copyin(args, &ua, sizeof(struct alpha_sethae_args));
if (error)
return (error);
if (securelevel > 0)
return (EPERM);
error = suser(td->td_proc);
if (error)
return (error);
td->td_md.md_flags |= MDP_HAEUSED;
td->td_md.md_hae = ua.hae;
return (0);
}
struct alpha_fpmask_args {
u_int64_t mask;
};
static int
alpha_get_fpmask(struct thread *td, char *args)
{
int error;
struct alpha_fpmask_args ua;
ua.mask = td->td_pcb->pcb_fp_control;
error = copyout(&ua, args, sizeof(struct alpha_fpmask_args));
return (error);
}
static int
alpha_set_fpmask(struct thread *td, char *args)
{
int error;
u_int64_t oldmask, *fp_control;
struct alpha_fpmask_args ua;
error = copyin(args, &ua, sizeof(struct alpha_fpmask_args));
if (error)
return (error);
fp_control = &td->td_pcb->pcb_fp_control;
oldmask = *fp_control;
*fp_control = ua.mask & IEEE_TRAP_ENABLE_MASK;
ua.mask = oldmask;
error = copyout(&ua, args, sizeof(struct alpha_fpmask_args));
return (error);
}
static int
alpha_set_uac(struct thread *td, char *args)
{
int error;
unsigned long uac;
struct proc *p;
error = copyin(args, &uac, sizeof(uac));
if (error)
return (error);
p = td->td_proc;
PROC_LOCK(p);
if (p->p_pptr) {
PROC_LOCK(p->p_pptr);
/* XXXKSE which threads? */
p->p_pptr->p_thread.td_md.md_flags &= ~MDP_UAC_MASK;
p->p_pptr->p_thread.td_md.md_flags |= uac & MDP_UAC_MASK;
PROC_UNLOCK(p->p_pptr);
}
PROC_UNLOCK(p);
return 0;
}
static int
alpha_get_uac(struct thread *td, char *args)
{
struct proc *p;
int error;
unsigned long uac;
p = td->td_proc;
error = ESRCH;
PROC_LOCK(p);
if (p->p_pptr) {
PROC_LOCK(p->p_pptr);
/* XXXKSE which threads? */
uac = p->p_pptr->p_thread.td_md.md_flags & MDP_UAC_MASK;
PROC_UNLOCK(p->p_pptr);
PROC_UNLOCK(p);
error = copyout(&uac, args, sizeof(uac));
} else
PROC_UNLOCK(p);
return error;
}
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