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mips: Implement an SE workload for Linux.

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Change-Id: I78f6048cfe06be1b08d54dc7d24cb3518e97be0f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34158
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
This commit is contained in:
Gabe Black
2020-10-20 17:37:08 -07:00
parent a78abf07b7
commit 5a2a72bff4
8 changed files with 234 additions and 96 deletions
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66
src/arch/mips/linux/process.cc → src/arch/mips/linux/se_workload.cc
View File

@@ -1,7 +1,7 @@
/*
* Copyright (c) 2005 The Regents of The University of Michigan
* Copyright (c) 2007 MIPS Technologies, Inc.
* All rights reserved.
* Copyright 2005 The Regents of The University of Michigan
* Copyright 2007 MIPS Technologies, Inc.
* Copyright 2020 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
@@ -27,37 +27,29 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "arch/mips/linux/process.hh"
#include "arch/mips/linux/se_workload.hh"
#include "arch/mips/isa_traits.hh"
#include "arch/mips/linux/linux.hh"
#include <sys/syscall.h>
#include "arch/mips/process.hh"
#include "base/loader/object_file.hh"
#include "base/trace.hh"
#include "cpu/thread_context.hh"
#include "debug/SyscallVerbose.hh"
#include "kern/linux/linux.hh"
#include "sim/eventq.hh"
#include "sim/process.hh"
#include "sim/syscall_desc.hh"
#include "sim/syscall_emul.hh"
#include "sim/system.hh"
using namespace std;
using namespace MipsISA;
namespace
{
class MipsLinuxObjectFileLoader : public Process::Loader
class LinuxLoader : public Process::Loader
{
public:
Process *
load(const ProcessParams &params, ::Loader::ObjectFile *obj_file) override
load(const ProcessParams &params, ::Loader::ObjectFile *obj) override
{
if (obj_file->getArch() != ::Loader::Mips)
if (obj->getArch() != ::Loader::Mips)
return nullptr;
auto opsys = obj_file->getOpSys();
auto opsys = obj->getOpSys();
if (opsys == ::Loader::UnknownOpSys) {
warn("Unknown operating system; assuming Linux.");
@@ -67,14 +59,28 @@ class MipsLinuxObjectFileLoader : public Process::Loader
if (opsys != ::Loader::Linux)
return nullptr;
return new MipsLinuxProcess(params, obj_file);
return new MipsProcess(params, obj);
}
};
MipsLinuxObjectFileLoader loader;
LinuxLoader loader;
} // anonymous namespace
namespace MipsISA
{
void
EmuLinux::syscall(ThreadContext *tc)
{
Process *process = tc->getProcessPtr();
// Call the syscall function in the base Process class to update stats.
// This will move into the base SEWorkload function at some point.
process->Process::syscall(tc);
syscallDescs.get(tc->readIntReg(2))->doSyscall(tc);
}
/// Target uname() handler.
static SyscallReturn
unameFunc(SyscallDesc *desc, ThreadContext *tc, VPtr<Linux::utsname> name)
@@ -107,7 +113,7 @@ sys_getsysinfoFunc(SyscallDesc *desc, ThreadContext *tc, unsigned op,
return 0;
}
default:
cerr << "sys_getsysinfo: unknown op " << op << endl;
std::cerr << "sys_getsysinfo: unknown op " << op << std::endl;
abort();
break;
}
@@ -132,7 +138,7 @@ sys_setsysinfoFunc(SyscallDesc *desc, ThreadContext *tc, unsigned op,
return 0;
}
default:
cerr << "sys_setsysinfo: unknown op " << op << endl;
std::cerr << "sys_setsysinfo: unknown op " << op << std::endl;
abort();
break;
}
@@ -147,7 +153,7 @@ setThreadAreaFunc(SyscallDesc *desc, ThreadContext *tc, Addr addr)
return 0;
}
SyscallDescTable<MipsProcess::SyscallABI> MipsLinuxProcess::syscallDescs = {
SyscallDescTable<MipsISA::SEWorkload::SyscallABI> EmuLinux::syscallDescs = {
{ 4000, "syscall" },
{ 4001, "exit", exitFunc },
{ 4002, "fork" },
@@ -470,14 +476,10 @@ SyscallDescTable<MipsProcess::SyscallABI> MipsLinuxProcess::syscallDescs = {
{ 4319, "eventfd" }
};
MipsLinuxProcess::MipsLinuxProcess(const ProcessParams &params,
::Loader::ObjectFile *objFile) :
MipsProcess(params, objFile)
{}
} // namespace MipsISA
void
MipsLinuxProcess::syscall(ThreadContext *tc)
MipsISA::EmuLinux *
MipsEmuLinuxParams::create() const
{
MipsProcess::syscall(tc);
syscallDescs.get(tc->readIntReg(2))->doSyscall(tc);
return new MipsISA::EmuLinux(*this);
}

42
src/arch/mips/linux/process.hh → src/arch/mips/linux/se_workload.hh
View File

@@ -1,6 +1,6 @@
/*
* Copyright (c) 2004 The Regents of The University of Michigan
* All rights reserved.
* Copyright 2004 The Regents of The University of Michigan
* Copyright 2020 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
@@ -26,32 +26,36 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __MIPS_LINUX_PROCESS_HH__
#define __MIPS_LINUX_PROCESS_HH__
#ifndef __ARCH_MIPS_LINUX_SE_WORKLOAD_HH__
#define __ARCH_MIPS_LINUX_SE_WORKLOAD_HH__
#include "arch/mips/linux/linux.hh"
#include "arch/mips/process.hh"
#include "sim/eventq.hh"
#include "arch/mips/se_workload.hh"
#include "params/MipsEmuLinux.hh"
#include "sim/syscall_desc.hh"
/// A process with emulated Mips/Linux syscalls.
class MipsLinuxProcess : public MipsProcess
namespace MipsISA
{
class EmuLinux : public SEWorkload
{
public:
/// Constructor.
MipsLinuxProcess(const ProcessParams &params,
::Loader::ObjectFile *objFile);
using Params = MipsEmuLinuxParams;
/// The target system's hostname.
static const char *hostname;
/// ID of the thread group leader for the process
uint64_t __tgid;
void syscall(ThreadContext *tc) override;
protected:
const Params &_params;
/// Syscall descriptors, indexed by call number.
static SyscallDescTable<SyscallABI> syscallDescs;
public:
const Params &params() const { return _params; }
EmuLinux(const Params &p) : SEWorkload(p), _params(p) {}
void syscall(ThreadContext *tc) override;
};
#endif // __MIPS_LINUX_PROCESS_HH__
} // namespace MipsISA
#endif // __ARCH_MIPS_LINUX_SE_WORKLOAD_HH__