6617724c5f
While the KSE project was quite successful in bringing threading to FreeBSD, the M:N approach taken by the kse library was never developed to its full potential. Backwards compatibility will be provided via libmap.conf for dynamically linked binaries and static binaries will be broken.
135 lines
3.9 KiB
C
135 lines
3.9 KiB
C
/*-
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* Copyright (c) 1999 Brian Scott Dean, brdean@unx.sas.com.
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* 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 under the following copyrights and conditions:
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*
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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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* From: @(#)procfs_regs.c 8.4 (Berkeley) 6/15/94
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*
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* From:
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* $Id: procfs_regs.c,v 3.2 1993/12/15 09:40:17 jsp Exp $
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* $FreeBSD$
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*/
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#include "opt_compat.h"
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#include <sys/param.h>
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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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#include <sys/proc.h>
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#include <sys/ptrace.h>
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#include <sys/uio.h>
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#include <machine/reg.h>
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#include <fs/pseudofs/pseudofs.h>
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#include <fs/procfs/procfs.h>
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#ifdef COMPAT_IA32
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#include <sys/procfs.h>
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#include <machine/fpu.h>
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#include <compat/ia32/ia32_reg.h>
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extern struct sysentvec ia32_freebsd_sysvec;
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/*
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* PROC(write, dbregs, td2, &r) becomes
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* proc_write_dbregs(td2, &r) or
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* proc_write_dbregs32(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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int
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procfs_doprocdbregs(PFS_FILL_ARGS)
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{
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int error;
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struct dbreg r;
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struct thread *td2;
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#ifdef COMPAT_IA32
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struct dbreg32 r32;
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int wrap32 = 0;
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#endif
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if (uio->uio_offset != 0)
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return (0);
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PROC_LOCK(p);
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KASSERT(p->p_lock > 0, ("proc not held"));
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if (p_candebug(td, p) != 0) {
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PROC_UNLOCK(p);
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return (EPERM);
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}
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td2 = FIRST_THREAD_IN_PROC(p);
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#ifdef COMPAT_IA32
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if (td->td_proc->p_sysent == &ia32_freebsd_sysvec) {
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if (td2->td_proc->p_sysent != &ia32_freebsd_sysvec) {
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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, dbregs, td2, &r);
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if (error == 0) {
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PROC_UNLOCK(p);
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error = UIOMOVE_FROMBUF(r, uio);
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PROC_LOCK(p);
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}
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if (error == 0 && uio->uio_rw == UIO_WRITE) {
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if (!P_SHOULDSTOP(p)) /* XXXKSE should be P_TRACED? */
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error = EBUSY;
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else
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/* XXXKSE: */
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error = PROC(write, dbregs, td2, &r);
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}
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PROC_UNLOCK(p);
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return (error);
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}
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