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/*
* Copyright 2015 LabWare
* Copyright 2014 Google, Inc.
* Copyright (c) 2010 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Copyright (c) 2002-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* 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;
* neither the name of the copyright holders 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 COPYRIGHT HOLDERS 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 COPYRIGHT
* OWNER 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.
*
* Authors: Nathan Binkert
* William Wang
* Deyuan Guo
* Boris Shingarov
*/
/*
* Copyright (c) 1990, 1993 The Regents of the University of California
* All rights reserved
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratories.
*
* 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.
*
* @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
*/
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
*
* Taken from NetBSD
*
* "Stub" to allow remote cpu to debug over a serial line using gdb.
*/
#include "arch/power/remote_gdb.hh"
#include <sys/signal.h>
#include <unistd.h>
#include <string>
#include "arch/power/vtophys.hh"
#include "cpu/thread_state.hh"
#include "debug/GDBAcc.hh"
#include "debug/GDBMisc.hh"
#include "mem/page_table.hh"
#include "sim/byteswap.hh"
using namespace std;
using namespace PowerISA;
RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc, int _port)
: BaseRemoteGDB(_system, tc, _port), regCache(this)
{
}
/*
* Determine if the mapping at va..(va+len) is valid.
*/
bool
RemoteGDB::acc(Addr va, size_t len)
{
// Check to make sure the first byte is mapped into the processes address
// space. At the time of this writing, the acc() check is used when
// processing the MemR/MemW packets before actually asking the translating
// port proxy to read/writeBlob. I (bgs) am not convinced the first byte
// check is enough.
panic_if(FullSystem, "acc not implemented for POWER FS!");
return context()->getProcessPtr()->pTable->lookup(va) != nullptr;
}
void
RemoteGDB::PowerGdbRegCache::getRegs(ThreadContext *context)
{
DPRINTF(GDBAcc, "getRegs in remotegdb \n");
// Default order on 32-bit PowerPC:
// R0-R31 (32-bit each), F0-F31 (64-bit IEEE754 double),
// PC, MSR, CR, LR, CTR, XER (32-bit each)
for (int i = 0; i < NumIntArchRegs; i++)
r.gpr[i] = htobe((uint32_t)context->readIntReg(i));
for (int i = 0; i < NumFloatArchRegs; i++)
r.fpr[i] = context->readFloatRegBits(i);
r.pc = htobe((uint32_t)context->pcState().pc());
r.msr = 0; // Is MSR modeled?
r.cr = htobe((uint32_t)context->readIntReg(INTREG_CR));
r.lr = htobe((uint32_t)context->readIntReg(INTREG_LR));
r.ctr = htobe((uint32_t)context->readIntReg(INTREG_CTR));
r.xer = htobe((uint32_t)context->readIntReg(INTREG_XER));
}
void
RemoteGDB::PowerGdbRegCache::setRegs(ThreadContext *context) const
{
DPRINTF(GDBAcc, "setRegs in remotegdb \n");
for (int i = 0; i < NumIntArchRegs; i++)
context->setIntReg(i, betoh(r.gpr[i]));
for (int i = 0; i < NumFloatArchRegs; i++)
context->setFloatRegBits(i, r.fpr[i]);
context->pcState(betoh(r.pc));
// Is MSR modeled?
context->setIntReg(INTREG_CR, betoh(r.cr));
context->setIntReg(INTREG_LR, betoh(r.lr));
context->setIntReg(INTREG_CTR, betoh(r.ctr));
context->setIntReg(INTREG_XER, betoh(r.xer));
}
BaseGdbRegCache*
RemoteGDB::gdbRegs()
{
return ®Cache;
}
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