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arch-arm: Implement a CapstoneDisassembler for Arm

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Change-Id: Id3135bda065efa9b4f3ab36972957fd00c05a53c
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
This commit is contained in:
Giacomo Travaglini
2023-09-21 15:01:42 +01:00
parent 82675648c8
commit 8233aa8a9b
4 changed files with 194 additions and 1 deletions
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44
src/arch/arm/tracers/ArmCapstone.py Normal file
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@@ -0,0 +1,44 @@
# Copyright (c) 2023 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.
#
# 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.
from m5.SimObject import SimObject
from m5.params import *
from m5.objects.Capstone import CapstoneDisassembler
class ArmCapstoneDisassembler(CapstoneDisassembler):
type = "ArmCapstoneDisassembler"
cxx_class = "gem5::trace::ArmCapstoneDisassembler"
cxx_header = "arch/arm/tracers/capstone.hh"

7
src/arch/arm/tracers/SConscript
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@@ -1,4 +1,4 @@
# Copyright (c) 2018 ARM Limited
# Copyright (c) 2018, 2023 Arm Limited
# All rights reserved.
#
# The license below extends only to copyright in the software and shall
@@ -42,3 +42,8 @@ Source('tarmac_parser.cc', tags='arm isa')
Source('tarmac_tracer.cc', tags='arm isa')
Source('tarmac_record.cc', tags='arm isa')
Source('tarmac_record_v8.cc', tags='arm isa')
if env['CONF']['HAVE_CAPSTONE']:
SimObject('ArmCapstone.py', sim_objects=['ArmCapstoneDisassembler'],
tags=['capstone', 'arm isa'])
Source('capstone.cc', tags=['capstone', 'arm isa'])

75
src/arch/arm/tracers/capstone.cc Normal file
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/*
* Copyright (c) 2023 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.
*
* 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.
*/
#include "arch/arm/tracers/capstone.hh"
#include "arch/arm/insts/static_inst.hh"
#include "base/output.hh"
namespace gem5
{
namespace trace
{
using namespace ArmISA;
ArmCapstoneDisassembler::ArmCapstoneDisassembler(const Params &p)
: CapstoneDisassembler(p)
{
if (cs_open(CS_ARCH_ARM64, CS_MODE_ARM, &arm64Handle) != CS_ERR_OK)
panic("Unable to open capstone for arm64 disassembly");
if (cs_open(CS_ARCH_ARM, CS_MODE_ARM, &armHandle) != CS_ERR_OK)
panic("Unable to open capstone for arm disassembly");
}
const csh*
ArmCapstoneDisassembler::currHandle(const PCStateBase &_pc) const
{
auto pc = _pc.as<ArmISA::PCState>();
if (pc.aarch64()) {
return &arm64Handle;
} else {
auto mode = pc.thumb() ? CS_MODE_THUMB : CS_MODE_ARM;
cs_option(armHandle, CS_OPT_MODE, mode);
return &armHandle;
}
}
} // namespace trace
} // namespace gem5

69
src/arch/arm/tracers/capstone.hh Normal file
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/*
* Copyright (c) 2023 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.
*
* 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.
*/
#ifndef __ARCH_ARM_TRACERS_CAPSTONE_HH__
#define __ARCH_ARM_TRACERS_CAPSTONE_HH__
#include "cpu/capstone.hh"
#include "params/ArmCapstoneDisassembler.hh"
namespace gem5
{
class ThreadContext;
namespace trace
{
class ArmCapstoneDisassembler : public CapstoneDisassembler
{
public:
PARAMS(ArmCapstoneDisassembler);
ArmCapstoneDisassembler(const Params &p);
protected:
const csh* currHandle(const PCStateBase &pc) const override;
protected:
csh arm64Handle;
csh armHandle;
};
} // namespace trace
} // namespace gem5
#endif // __ARCH_ARM_TRACERS_CAPSTONE_HH__