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/*
* Copyright (c) 2007 The Hewlett-Packard Development Company
* 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.
*
* Authors: Gabe Black
*/
#ifndef __ARCH_X86_PROCESS_HH__
#define __ARCH_X86_PROCESS_HH__
#include <string>
#include <vector>
#include "arch/x86/pagetable.hh"
#include "mem/multi_level_page_table.hh"
#include "sim/aux_vector.hh"
#include "sim/process.hh"
class SyscallDesc;
namespace X86ISA
{
enum X86AuxiliaryVectorTypes {
M5_AT_SYSINFO = 32,
M5_AT_SYSINFO_EHDR = 33
};
class X86Process : public Process
{
protected:
/**
* Declaration of architectural page table for x86.
*
* These page tables are stored in system memory and respect x86
* specification.
*/
Addr _gdtStart;
Addr _gdtSize;
SyscallDesc *syscallDescs;
const int numSyscallDescs;
X86Process(ProcessParams * params, ObjectFile *objFile,
SyscallDesc *_syscallDescs, int _numSyscallDescs);
template<class IntType>
void argsInit(int pageSize,
std::vector<AuxVector<IntType> > extraAuxvs);
public:
Addr gdtStart()
{ return _gdtStart; }
Addr gdtSize()
{ return _gdtSize; }
SyscallDesc* getDesc(int callnum) override;
void setSyscallReturn(ThreadContext *tc,
SyscallReturn return_value) override;
void clone(ThreadContext *old_tc, ThreadContext *new_tc,
Process *process, TheISA::IntReg flags) override;
X86Process &
operator=(const X86Process &in)
{
if (this == &in)
return *this;
_gdtStart = in._gdtStart;
_gdtSize = in._gdtSize;
syscallDescs = in.syscallDescs;
return *this;
}
};
class X86_64Process : public X86Process
{
protected:
X86_64Process(ProcessParams *params, ObjectFile *objFile,
SyscallDesc *_syscallDescs, int _numSyscallDescs);
class VSyscallPage
{
public:
Addr base;
Addr size;
Addr vtimeOffset;
Addr vgettimeofdayOffset;
VSyscallPage &
operator=(const VSyscallPage &in)
{
if (this == &in)
return *this;
base = in.base;
size = in.size;
vtimeOffset = in.vtimeOffset;
vgettimeofdayOffset = in.vgettimeofdayOffset;
return *this;
}
};
VSyscallPage vsyscallPage;
public:
void argsInit(int pageSize);
void initState() override;
X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i) override;
/// Explicitly import the otherwise hidden getSyscallArg
using Process::getSyscallArg;
void setSyscallArg(ThreadContext *tc, int i,
X86ISA::IntReg val) override;
void clone(ThreadContext *old_tc, ThreadContext *new_tc,
Process *process, TheISA::IntReg flags) override;
};
class I386Process : public X86Process
{
protected:
I386Process(ProcessParams *params, ObjectFile *objFile,
SyscallDesc *_syscallDescs, int _numSyscallDescs);
class VSyscallPage
{
public:
Addr base;
Addr size;
Addr vsyscallOffset;
Addr vsysexitOffset;
VSyscallPage &
operator=(const VSyscallPage &in)
{
if (this == &in)
return *this;
base = in.base;
size = in.size;
vsyscallOffset = in.vsyscallOffset;
vsysexitOffset = in.vsysexitOffset;
return *this;
}
};
VSyscallPage vsyscallPage;
public:
void argsInit(int pageSize);
void initState() override;
void syscall(int64_t callnum, ThreadContext *tc,
Fault *fault) override;
X86ISA::IntReg getSyscallArg(ThreadContext *tc,
int &i) override;
X86ISA::IntReg getSyscallArg(ThreadContext *tc, int &i,
int width) override;
void setSyscallArg(ThreadContext *tc, int i,
X86ISA::IntReg val) override;
void clone(ThreadContext *old_tc, ThreadContext *new_tc,
Process *process, TheISA::IntReg flags) override;
};
}
#endif // __ARCH_X86_PROCESS_HH__
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