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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. 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
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_capsicum.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/capsicum.h>
#include <sys/proc.h>
#include <sys/sysproto.h>
#include <sys/syscall.h>
#include <sys/sysent.h>
#include <machine/sysarch.h>
#ifndef _SYS_SYSPROTO_H_
struct sysarch_args {
int op;
char *parms;
};
#endif
/* Prototypes */
static int arm32_sync_icache (struct thread *, void *);
static int arm32_drain_writebuf(struct thread *, void *);
static int
arm32_sync_icache(struct thread *td, void *args)
{
struct arm_sync_icache_args ua;
int error;
if ((error = copyin(args, &ua, sizeof(ua))) != 0)
return (error);
cpu_icache_sync_range(ua.addr, ua.len);
td->td_retval[0] = 0;
return (0);
}
static int
arm32_drain_writebuf(struct thread *td, void *args)
{
/* No args. */
td->td_retval[0] = 0;
cpu_drain_writebuf();
return (0);
}
static int
arm32_set_tp(struct thread *td, void *args)
{
td->td_md.md_tp = (register_t)args;
#ifndef ARM_TP_ADDRESS
set_tls(args);
#else
*(register_t *)ARM_TP_ADDRESS = (register_t)args;
#endif
return (0);
}
static int
arm32_get_tp(struct thread *td, void *args)
{
#ifndef ARM_TP_ADDRESS
td->td_retval[0] = td->td_md.md_tp;
#else
td->td_retval[0] = *(register_t *)ARM_TP_ADDRESS;
#endif
return (0);
}
int
sysarch(td, uap)
struct thread *td;
register struct sysarch_args *uap;
{
int error;
#ifdef CAPABILITY_MODE
/*
* When adding new operations, add a new case statement here to
* explicitly indicate whether or not the operation is safe to
* perform in capability mode.
*/
if (IN_CAPABILITY_MODE(td)) {
switch (uap->op) {
case ARM_SYNC_ICACHE:
case ARM_DRAIN_WRITEBUF:
case ARM_SET_TP:
case ARM_GET_TP:
break;
default:
#ifdef KTRACE
if (KTRPOINT(td, KTR_CAPFAIL))
ktrcapfail(CAPFAIL_SYSCALL, NULL, NULL);
#endif
return (ECAPMODE);
}
}
#endif
switch (uap->op) {
case ARM_SYNC_ICACHE:
error = arm32_sync_icache(td, uap->parms);
break;
case ARM_DRAIN_WRITEBUF:
error = arm32_drain_writebuf(td, uap->parms);
break;
case ARM_SET_TP:
error = arm32_set_tp(td, uap->parms);
break;
case ARM_GET_TP:
error = arm32_get_tp(td, uap->parms);
break;
default:
error = EINVAL;
break;
}
return (error);
}
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