2a15bfd79c
This avoids having a copy in the lookup function itself, and the declaration of a lot of temporary TLB entry pointers in callers. The gpu TLB seems to have had the most dependence on the original signature of the lookup function, partially because it was relying on a somewhat unsafe copy to a TLB entry using a base class pointer type. Change-Id: I8b1cf494468163deee000002d243541657faf57f Reviewed-on: https://gem5-review.googlesource.com/7343 Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Gabe Black <gabeblack@google.com>
309 lines
12 KiB
C++
309 lines
12 KiB
C++
/*
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* Copyright 2015 LabWare
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* Copyright 2014 Google Inc.
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* Copyright (c) 2010, 2013, 2016 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Copyright (c) 2002-2005 The Regents of The University of Michigan
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* All rights reserved.
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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 are
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* met: 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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* 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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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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* William Wang
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* Boris Shingarov
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*/
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/*
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* Copyright (c) 1990, 1993 The Regents of the University of California
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* All rights reserved
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratories.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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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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* @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94
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*/
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $
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*
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* Taken from NetBSD
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*
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* "Stub" to allow remote cpu to debug over a serial line using gdb.
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*/
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#include "arch/arm/remote_gdb.hh"
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#include <sys/signal.h>
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#include <unistd.h>
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#include <string>
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#include "arch/arm/decoder.hh"
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#include "arch/arm/pagetable.hh"
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#include "arch/arm/registers.hh"
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#include "arch/arm/system.hh"
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#include "arch/arm/utility.hh"
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#include "arch/arm/vtophys.hh"
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#include "base/chunk_generator.hh"
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#include "base/intmath.hh"
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#include "base/remote_gdb.hh"
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#include "base/socket.hh"
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#include "base/trace.hh"
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#include "cpu/static_inst.hh"
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#include "cpu/thread_context.hh"
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#include "cpu/thread_state.hh"
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#include "debug/GDBAcc.hh"
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#include "debug/GDBMisc.hh"
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#include "mem/page_table.hh"
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#include "mem/physical.hh"
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#include "mem/port.hh"
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#include "sim/full_system.hh"
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#include "sim/system.hh"
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using namespace std;
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using namespace ArmISA;
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RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc, int _port)
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: BaseRemoteGDB(_system, tc, _port), regCache32(this), regCache64(this)
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{
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}
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/*
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* Determine if the mapping at va..(va+len) is valid.
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*/
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bool
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RemoteGDB::acc(Addr va, size_t len)
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{
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if (FullSystem) {
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for (ChunkGenerator gen(va, len, PageBytes); !gen.done(); gen.next()) {
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if (!virtvalid(context(), gen.addr())) {
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DPRINTF(GDBAcc, "acc: %#x mapping is invalid\n", va);
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return false;
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}
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}
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DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va);
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return true;
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} else {
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// Check to make sure the first byte is mapped into the processes
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// address space.
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return context()->getProcessPtr()->pTable->lookup(va) != nullptr;
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}
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}
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void
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RemoteGDB::AArch64GdbRegCache::getRegs(ThreadContext *context)
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{
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DPRINTF(GDBAcc, "getRegs in remotegdb \n");
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for (int i = 0; i < 31; ++i)
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r.x[i] = context->readIntReg(INTREG_X0 + i);
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r.spx = context->readIntReg(INTREG_SPX);
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r.pc = context->pcState().pc();
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r.cpsr = context->readMiscRegNoEffect(MISCREG_CPSR);
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for (int i = 0; i < 32*4; i += 4) {
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r.v[i + 0] = context->readFloatRegBits(i + 2);
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r.v[i + 1] = context->readFloatRegBits(i + 3);
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r.v[i + 2] = context->readFloatRegBits(i + 0);
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r.v[i + 3] = context->readFloatRegBits(i + 1);
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}
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for (int i = 0; i < 32; i ++) {
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r.vec[i] = context->readVecReg(RegId(VecRegClass,i));
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}
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}
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void
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RemoteGDB::AArch64GdbRegCache::setRegs(ThreadContext *context) const
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{
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DPRINTF(GDBAcc, "setRegs in remotegdb \n");
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for (int i = 0; i < 31; ++i)
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context->setIntReg(INTREG_X0 + i, r.x[i]);
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context->pcState(r.pc);
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context->setMiscRegNoEffect(MISCREG_CPSR, r.cpsr);
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// Update the stack pointer. This should be done after
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// updating CPSR/PSTATE since that might affect how SPX gets
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// mapped.
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context->setIntReg(INTREG_SPX, r.spx);
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for (int i = 0; i < 32*4; i += 4) {
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context->setFloatRegBits(i + 2, r.v[i + 0]);
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context->setFloatRegBits(i + 3, r.v[i + 1]);
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context->setFloatRegBits(i + 0, r.v[i + 2]);
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context->setFloatRegBits(i + 1, r.v[i + 3]);
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}
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for (int i = 0; i < 32; i ++) {
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context->setVecReg(RegId(VecRegClass, i), r.vec[i]);
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}
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}
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void
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RemoteGDB::AArch32GdbRegCache::getRegs(ThreadContext *context)
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{
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DPRINTF(GDBAcc, "getRegs in remotegdb \n");
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r.gpr[0] = context->readIntReg(INTREG_R0);
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r.gpr[1] = context->readIntReg(INTREG_R1);
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r.gpr[2] = context->readIntReg(INTREG_R2);
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r.gpr[3] = context->readIntReg(INTREG_R3);
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r.gpr[4] = context->readIntReg(INTREG_R4);
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r.gpr[5] = context->readIntReg(INTREG_R5);
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r.gpr[6] = context->readIntReg(INTREG_R6);
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r.gpr[7] = context->readIntReg(INTREG_R7);
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r.gpr[8] = context->readIntReg(INTREG_R8);
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r.gpr[9] = context->readIntReg(INTREG_R9);
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r.gpr[10] = context->readIntReg(INTREG_R10);
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r.gpr[11] = context->readIntReg(INTREG_R11);
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r.gpr[12] = context->readIntReg(INTREG_R12);
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r.gpr[13] = context->readIntReg(INTREG_SP);
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r.gpr[14] = context->readIntReg(INTREG_LR);
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r.gpr[15] = context->pcState().pc();
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// One day somebody will implement transfer of FPRs correctly.
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for (int i=0; i<8*3; i++) r.fpr[i] = 0;
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r.fpscr = context->readMiscRegNoEffect(MISCREG_FPSCR);
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r.cpsr = context->readMiscRegNoEffect(MISCREG_CPSR);
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}
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void
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RemoteGDB::AArch32GdbRegCache::setRegs(ThreadContext *context) const
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{
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DPRINTF(GDBAcc, "setRegs in remotegdb \n");
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context->setIntReg(INTREG_R0, r.gpr[0]);
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context->setIntReg(INTREG_R1, r.gpr[1]);
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context->setIntReg(INTREG_R2, r.gpr[2]);
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context->setIntReg(INTREG_R3, r.gpr[3]);
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context->setIntReg(INTREG_R4, r.gpr[4]);
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context->setIntReg(INTREG_R5, r.gpr[5]);
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context->setIntReg(INTREG_R6, r.gpr[6]);
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context->setIntReg(INTREG_R7, r.gpr[7]);
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context->setIntReg(INTREG_R8, r.gpr[8]);
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context->setIntReg(INTREG_R9, r.gpr[9]);
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context->setIntReg(INTREG_R10, r.gpr[10]);
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context->setIntReg(INTREG_R11, r.gpr[11]);
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context->setIntReg(INTREG_R12, r.gpr[12]);
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context->setIntReg(INTREG_SP, r.gpr[13]);
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context->setIntReg(INTREG_LR, r.gpr[14]);
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context->pcState(r.gpr[15]);
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// One day somebody will implement transfer of FPRs correctly.
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context->setMiscReg(MISCREG_FPSCR, r.fpscr);
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context->setMiscRegNoEffect(MISCREG_CPSR, r.cpsr);
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}
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BaseGdbRegCache*
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RemoteGDB::gdbRegs()
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{
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if (inAArch64(context()))
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return ®Cache64;
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else
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return ®Cache32;
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}
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