/*
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1993 Jan-Simon Pendry
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry.
*
* 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.
*
* @(#)procfs_machdep.c 8.3 (Berkeley) 1/27/94
*
* From:
* $Id: procfs_machdep.c,v 1.9 1997/02/22 09:32:44 peter Exp $
*/
/*
* Functions to be implemented here are:
*
* procfs_read_regs(proc, regs)
* Get the current user-visible register set from the process
* and copy it into the regs structure (<machine/reg.h>).
* The process is stopped at the time read_regs is called.
*
* procfs_write_regs(proc, regs)
* Update the current register set from the passed in regs
* structure. Take care to avoid clobbering special CPU
* registers or privileged bits in the PSL.
* Depending on the architecture this may have fix-up work to do,
* especially if the IAR or PCW are modified.
* The process is stopped at the time write_regs is called.
*
* procfs_read_fpregs, procfs_write_fpregs
* deal with the floating point register set, otherwise as above.
*
* procfs_sstep(proc)
* Arrange for the process to trap after executing a single instruction.
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/ptrace.h>
#include <sys/vnode.h>
#include <machine/reg.h>
#include <machine/md_var.h>
#include <miscfs/procfs/procfs.h>
#include <vm/vm.h>
#include <sys/lock.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <sys/user.h>
int
procfs_read_regs(p, regs)
struct proc *p;
struct reg *regs;
{
if ((p->p_flag & P_INMEM) == 0)
return (EIO);
return (fill_regs(p, regs));
}
int
procfs_write_regs(p, regs)
struct proc *p;
struct reg *regs;
{
if ((p->p_flag & P_INMEM) == 0)
return (EIO);
return (set_regs(p, regs));
}
/*
* Ptrace doesn't support fpregs at all, and there are no security holes
* or translations for fpregs, so we can just copy them.
*/
int
procfs_read_fpregs(p, fpregs)
struct proc *p;
struct fpreg *fpregs;
{
if ((p->p_flag & P_INMEM) == 0)
return (EIO);
bcopy(&p->p_addr->u_pcb.pcb_savefpu, fpregs, sizeof *fpregs);
return (0);
}
int
procfs_write_fpregs(p, fpregs)
struct proc *p;
struct fpreg *fpregs;
{
if ((p->p_flag & P_INMEM) == 0)
return (EIO);
bcopy(fpregs, &p->p_addr->u_pcb.pcb_savefpu, sizeof *fpregs);
return (0);
}
int
procfs_sstep(p)
struct proc *p;
{
if ((p->p_flag & P_INMEM) == 0)
return (EIO);
return (ptrace_single_step(p));
}
