2002-02-16 05:38:07 +00:00
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/*-
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1994-05-24 10:09:53 +00:00
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* Copyright (c) 1993 Jan-Simon Pendry
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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1997-02-10 02:22:35 +00:00
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* @(#)procfs_fpregs.c 8.2 (Berkeley) 6/15/94
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1994-05-24 10:09:53 +00:00
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*
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1997-02-10 02:22:35 +00:00
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* From:
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2002-02-16 05:38:07 +00:00
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* $Id: procfs_regs.c,v 3.2 1993/12/15 09:40:17 jsp Exp $
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1999-08-28 01:08:13 +00:00
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* $FreeBSD$
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1994-05-24 10:09:53 +00:00
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*/
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2005-06-30 07:49:22 +00:00
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#include "opt_compat.h"
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1994-05-24 10:09:53 +00:00
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#include <sys/param.h>
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2001-05-01 08:13:21 +00:00
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#include <sys/systm.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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1994-05-24 10:09:53 +00:00
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#include <sys/proc.h>
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Dissociate ptrace from procfs.
Until now, the ptrace syscall was implemented as a wrapper that called
various functions in procfs depending on which ptrace operation was
requested. Most of these functions were themselves wrappers around
procfs_{read,write}_{,db,fp}regs(), with only some extra error checks,
which weren't necessary in the ptrace case anyway.
This commit moves procfs_rwmem() from procfs_mem.c into sys_process.c
(renaming it to proc_rwmem() in the process), and implements ptrace()
directly in terms of procfs_{read,write}_{,db,fp}regs() instead of
having it fake up a struct uio and then call procfs_do{,db,fp}regs().
It also moves the prototypes for procfs_{read,write}_{,db,fp}regs()
and proc_rwmem() from proc.h to ptrace.h, and marks all procfs files
except procfs_machdep.c as "optional procfs" instead of "standard".
2001-10-07 20:08:42 +00:00
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#include <sys/ptrace.h>
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2009-03-02 18:43:50 +00:00
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#include <sys/sysent.h>
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2001-12-04 01:35:06 +00:00
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#include <sys/uio.h>
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2001-05-01 08:13:21 +00:00
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1994-05-24 10:09:53 +00:00
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#include <machine/reg.h>
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2001-05-01 08:13:21 +00:00
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2001-12-04 01:35:06 +00:00
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#include <fs/pseudofs/pseudofs.h>
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2001-05-23 09:42:29 +00:00
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#include <fs/procfs/procfs.h>
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2001-05-01 08:13:21 +00:00
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2010-03-11 14:49:06 +00:00
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#ifdef COMPAT_FREEBSD32
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2005-06-30 07:49:22 +00:00
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#include <sys/procfs.h>
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#include <machine/fpu.h>
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/*
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* PROC(write, fpregs, td2, &r) becomes
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* proc_write_fpregs(td2, &r) or
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* proc_write_fpregs32(td2, &r32)
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*
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* UIOMOVE_FROMBUF(r, uio) becomes
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* uiomove_frombuf(&r, sizeof(r), uio) or
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* uiomove_frombuf(&r32, sizeof(r32), uio)
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*/
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#define PROC(d, w, t, r) wrap32 ? \
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proc_ ## d ## _ ## w ## 32(t, r ## 32) : \
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proc_ ## d ## _ ## w(t, r)
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#define UIOMOVE_FROMBUF(k, u) wrap32 ? \
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uiomove_frombuf(& k ## 32, sizeof(k ## 32), u) : \
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uiomove_frombuf(& k, sizeof(k), u)
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#else
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#define PROC(d, w, t, r) proc_ ## d ## _ ## w(t, r)
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#define UIOMOVE_FROMBUF(k, u) uiomove_frombuf(& k, sizeof(k), u)
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#endif
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1994-05-24 10:09:53 +00:00
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int
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2001-12-04 01:35:06 +00:00
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procfs_doprocfpregs(PFS_FILL_ARGS)
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1994-05-24 10:09:53 +00:00
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{
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int error;
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struct fpreg r;
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2005-06-30 07:49:22 +00:00
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struct thread *td2;
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2010-03-11 14:49:06 +00:00
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#ifdef COMPAT_FREEBSD32
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2005-06-30 07:49:22 +00:00
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struct fpreg32 r32;
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int wrap32 = 0;
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#endif
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1994-05-24 10:09:53 +00:00
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2007-04-15 13:29:36 +00:00
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if (uio->uio_offset != 0)
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return (0);
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2002-04-13 23:14:08 +00:00
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PROC_LOCK(p);
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2015-11-08 01:38:56 +00:00
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PROC_ASSERT_HELD(p);
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2002-05-19 00:14:50 +00:00
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if (p_candebug(td, p)) {
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2002-04-13 23:14:08 +00:00
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PROC_UNLOCK(p);
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2002-02-16 05:38:07 +00:00
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return (EPERM);
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2002-04-13 23:14:08 +00:00
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}
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2010-12-02 12:44:51 +00:00
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if (!P_SHOULDSTOP(p)) {
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PROC_UNLOCK(p);
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return (EBUSY);
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}
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1994-05-24 10:09:53 +00:00
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2003-10-02 15:00:55 +00:00
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/* XXXKSE: */
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2005-06-30 07:49:22 +00:00
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td2 = FIRST_THREAD_IN_PROC(p);
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2010-03-11 14:49:06 +00:00
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#ifdef COMPAT_FREEBSD32
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2009-03-02 18:43:50 +00:00
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if (SV_CURPROC_FLAG(SV_ILP32)) {
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2011-01-26 20:03:58 +00:00
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if (SV_PROC_FLAG(td2->td_proc, SV_ILP32) == 0) {
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2005-06-30 07:49:22 +00:00
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PROC_UNLOCK(p);
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return (EINVAL);
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}
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wrap32 = 1;
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}
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#endif
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error = PROC(read, fpregs, td2, &r);
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2003-05-05 15:12:51 +00:00
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if (error == 0) {
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PROC_UNLOCK(p);
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2005-06-30 07:49:22 +00:00
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error = UIOMOVE_FROMBUF(r, uio);
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2003-05-05 15:12:51 +00:00
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PROC_LOCK(p);
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}
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1994-05-24 10:09:53 +00:00
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if (error == 0 && uio->uio_rw == UIO_WRITE) {
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Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)
Reviewed by: Almost everyone who counts
(at various times, peter, jhb, matt, alfred, mini, bernd,
and a cast of thousands)
NOTE: this is still Beta code, and contains lots of debugging stuff.
expect slight instability in signals..
2002-06-29 17:26:22 +00:00
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if (!P_SHOULDSTOP(p))
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1994-05-24 10:09:53 +00:00
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error = EBUSY;
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else
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2002-02-16 05:38:07 +00:00
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/* XXXKSE: */
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2005-06-30 07:49:22 +00:00
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error = PROC(write, fpregs, td2, &r);
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1994-05-24 10:09:53 +00:00
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}
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2002-04-13 23:14:08 +00:00
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PROC_UNLOCK(p);
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1994-05-24 10:09:53 +00:00
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return (error);
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}
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