e35b491c46
This code was originally in the ObjectFile class, but not all object files will become Processes. All Processes will ultimately come from ObjectFiles though, so it makes more sense to put that class there. Change-Id: Ie73e4cdecbb51ce53d24cf68911a6cfc0685d771 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21468 Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com> Maintainer: Gabe Black <gabeblack@google.com>
132 lines
4.2 KiB
C++
132 lines
4.2 KiB
C++
/*
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* Copyright (c) 2003-2005 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: Steve Reinhardt
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* Gabe Black
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* Ali Saidi
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*/
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#include "arch/sparc/linux/process.hh"
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#include "arch/sparc/isa_traits.hh"
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#include "arch/sparc/registers.hh"
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#include "base/loader/object_file.hh"
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#include "base/trace.hh"
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#include "cpu/thread_context.hh"
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#include "kern/linux/linux.hh"
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#include "sim/process.hh"
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#include "sim/syscall_desc.hh"
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#include "sim/syscall_emul.hh"
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using namespace std;
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using namespace SparcISA;
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namespace
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{
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class SparcLinuxObjectFileLoader : public Process::Loader
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{
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public:
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Process *
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load(ProcessParams *params, ObjectFile *obj_file) override
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{
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auto arch = obj_file->getArch();
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auto opsys = obj_file->getOpSys();
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if (arch != ObjectFile::SPARC64 && arch != ObjectFile::SPARC32)
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return nullptr;
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if (opsys == ObjectFile::UnknownOpSys) {
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warn("Unknown operating system; assuming Linux.");
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opsys = ObjectFile::Linux;
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}
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if (opsys != ObjectFile::Linux)
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return nullptr;
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if (arch == ObjectFile::SPARC64)
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return new Sparc64LinuxProcess(params, obj_file);
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else
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return new Sparc32LinuxProcess(params, obj_file);
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}
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};
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SparcLinuxObjectFileLoader loader;
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} // anonymous namespace
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SyscallDesc*
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SparcLinuxProcess::getDesc(int callnum)
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{
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if (callnum < 0 || callnum >= Num_Syscall_Descs)
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return NULL;
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return &syscallDescs[callnum];
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}
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SyscallDesc*
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SparcLinuxProcess::getDesc32(int callnum)
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{
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if (callnum < 0 || callnum >= Num_Syscall32_Descs)
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return NULL;
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return &syscall32Descs[callnum];
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}
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Sparc32LinuxProcess::Sparc32LinuxProcess(ProcessParams * params,
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ObjectFile *objFile)
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: Sparc32Process(params, objFile)
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{}
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void Sparc32LinuxProcess::handleTrap(int trapNum, ThreadContext *tc,
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Fault *fault)
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{
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switch (trapNum) {
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case 0x10: //Linux 32 bit syscall trap
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tc->syscall(tc->readIntReg(1), fault);
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break;
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default:
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SparcProcess::handleTrap(trapNum, tc, fault);
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}
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}
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Sparc64LinuxProcess::Sparc64LinuxProcess(ProcessParams * params,
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ObjectFile *objFile)
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: Sparc64Process(params, objFile)
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{}
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void Sparc64LinuxProcess::handleTrap(int trapNum, ThreadContext *tc,
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Fault *fault)
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{
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switch (trapNum) {
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// case 0x10: // Linux 32 bit syscall trap
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case 0x6d: // Linux 64 bit syscall trap
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tc->syscall(tc->readIntReg(1), fault);
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break;
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default:
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SparcProcess::handleTrap(trapNum, tc, fault);
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}
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}
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