144 lines
4.3 KiB
C
144 lines
4.3 KiB
C
/*
|
|
* 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 1.5 1995/12/07 12:45:37 davidg 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/time.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/vnode.h>
|
|
#include <machine/psl.h>
|
|
#include <machine/reg.h>
|
|
#include <machine/frame.h>
|
|
#include <machine/md_var.h>
|
|
#include <miscfs/procfs/procfs.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
#include <vm/vm_prot.h>
|
|
#include <vm/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));
|
|
}
|