f6cd7a4bb7
The mmapGrowsDown() method was a static method on the OperatingSystem class (and derived classes), which worked OK for the templated syscall emulation methods, but made it hard to access elsewhere. This patch moves the method to be a virtual function on the LiveProcess method, where it can be overridden for specific platforms (for now, Alpha). This patch also changes the value of mmapGrowsDown() from being false by default and true only on X86Linux32 to being true by default and false only on Alpha, which seems closer to reality (though in reality most people use ASLR and this doesn't really matter anymore). In the process, also got rid of the unused mmap_start field on LiveProcess and OperatingSystem mmapGrowsUp variable.
137 lines
4.2 KiB
C++
137 lines
4.2 KiB
C++
/*
|
|
* Copyright (c) 2003-2004 The Regents of The University of Michigan
|
|
* All rights reserved.
|
|
*
|
|
* 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
|
|
* Ali Saidi
|
|
*/
|
|
|
|
#ifndef __SPARC_PROCESS_HH__
|
|
#define __SPARC_PROCESS_HH__
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "sim/byteswap.hh"
|
|
#include "sim/process.hh"
|
|
|
|
class ObjectFile;
|
|
class System;
|
|
|
|
class SparcLiveProcess : public LiveProcess
|
|
{
|
|
protected:
|
|
|
|
const Addr StackBias;
|
|
|
|
// The locations of the fill and spill handlers
|
|
Addr fillStart, spillStart;
|
|
|
|
SparcLiveProcess(LiveProcessParams * params,
|
|
ObjectFile *objFile, Addr _StackBias);
|
|
|
|
void initState();
|
|
|
|
template<class IntType>
|
|
void argsInit(int pageSize);
|
|
|
|
public:
|
|
|
|
// Handles traps which request services from the operating system
|
|
virtual void handleTrap(int trapNum, ThreadContext *tc);
|
|
|
|
Addr readFillStart() { return fillStart; }
|
|
Addr readSpillStart() { return spillStart; }
|
|
|
|
virtual void flushWindows(ThreadContext *tc) = 0;
|
|
void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
|
|
};
|
|
|
|
class Sparc32LiveProcess : public SparcLiveProcess
|
|
{
|
|
protected:
|
|
|
|
Sparc32LiveProcess(LiveProcessParams * params, ObjectFile *objFile) :
|
|
SparcLiveProcess(params, objFile, 0)
|
|
{
|
|
// Set up stack. On SPARC Linux, stack goes from the top of memory
|
|
// downward, less the hole for the kernel address space.
|
|
stack_base = (Addr)0xf0000000ULL;
|
|
|
|
// Set up region for mmaps.
|
|
mmap_end = 0x70000000;
|
|
}
|
|
|
|
void initState();
|
|
|
|
public:
|
|
|
|
void argsInit(int intSize, int pageSize);
|
|
|
|
void flushWindows(ThreadContext *tc);
|
|
|
|
SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
|
|
/// Explicitly import the otherwise hidden getSyscallArg
|
|
using LiveProcess::getSyscallArg;
|
|
|
|
void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
|
|
};
|
|
|
|
class Sparc64LiveProcess : public SparcLiveProcess
|
|
{
|
|
protected:
|
|
|
|
Sparc64LiveProcess(LiveProcessParams * params, ObjectFile *objFile) :
|
|
SparcLiveProcess(params, objFile, 2047)
|
|
{
|
|
// Set up stack. On SPARC Linux, stack goes from the top of memory
|
|
// downward, less the hole for the kernel address space.
|
|
stack_base = (Addr)0x80000000000ULL;
|
|
|
|
// Set up region for mmaps.
|
|
mmap_end = 0xfffff80000000000ULL;
|
|
}
|
|
|
|
void initState();
|
|
|
|
public:
|
|
|
|
void argsInit(int intSize, int pageSize);
|
|
|
|
void flushWindows(ThreadContext *tc);
|
|
|
|
SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
|
|
/// Explicitly import the otherwise hidden getSyscallArg
|
|
using LiveProcess::getSyscallArg;
|
|
|
|
void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
|
|
};
|
|
|
|
/* No architectural page table defined for this ISA */
|
|
typedef NoArchPageTable ArchPageTable;
|
|
|
|
#endif // __SPARC_PROCESS_HH__
|