a60b99094c
1 - ptrace(2) syscall for native emulation
2 - common ptrace(2) syscall code (shared with compat_netbsd32)
3 - support routines that are shared with PROCFS and/or KTRACE
* Add module glue for #1 and #2. Both modules will be built-in to the
kernel if "options PTRACE" is included in the config file (this is
the default, defined in sys/conf/std).
* Mark the ptrace(2) syscall as modular in syscalls.master (generated
files will be committed shortly).
* Conditionalize all remaining portions of PTRACE code on a new kernel
option PTRACE_HOOKS.
XXX Instead of PROCFS depending on 'options PTRACE', we should probably
just add a procfs attribute to the sys/kern/sys_process.c file's
entry in files.kern, and add PROCFS to the "#if defineds" for
process_domem(). It's really confusing to have two different ways
of requiring this file.
82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/* $NetBSD: userret.h,v 1.14 2016/11/02 00:11:59 pgoyette Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 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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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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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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* 3. 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: Utah Hdr: trap.c 1.32 91/04/06
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*
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* @(#)trap.c 8.5 (Berkeley) 1/11/94
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*/
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#ifndef _SH3_USERRET_H_
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#define _SH3_USERRET_H_
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#include <sys/userret.h>
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#include <sh3/ubcreg.h>
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#include "opt_ptrace.h"
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static __inline void
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userret(struct lwp *l)
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{
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/* Invoke MI userret code */
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mi_userret(l);
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#ifdef PTRACE_HOOKS
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/* Check if lwp is being PT_STEP'ed */
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if (l->l_md.md_flags & MDL_SSTEP) {
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struct trapframe *tf = l->l_md.md_regs;
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/*
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* Channel A is set up for single stepping in sh_cpu_init().
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* Before RTE we write tf_ubc to BBRA and tf_spc to BARA.
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*/
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#ifdef SH3
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if (CPU_IS_SH3) {
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tf->tf_ubc = UBC_CYCLE_INSN | UBC_CYCLE_READ
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| SH3_UBC_CYCLE_CPU;
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}
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#endif
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#ifdef SH4
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if (CPU_IS_SH4) {
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tf->tf_ubc = UBC_CYCLE_INSN | UBC_CYCLE_READ;
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}
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#endif
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}
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#endif /* PTRACE_HOOKS */
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}
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#endif /* !_SH3_USERRET_H_ */
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