b7d0395126
util/statetrace/Makefile:
Makefile to build statetrace. Targets are:
statetrace: alias to build using the "native" compiler
statetrace-native: use the native compiler
statetrace-sparc: use the sparc cross compiler
I'll make this a little more fancy and capable later.
util/statetrace/arch/tracechild_i386.cc:
Implementation of i386 support
util/statetrace/arch/tracechild_i386.hh:
Declaration of i386 support
util/statetrace/arch/tracechild_sparc.cc:
implementation of SPARC support
util/statetrace/arch/tracechild_sparc.hh:
declaration of SPARC support
util/statetrace/printer.cc:
Implementation of the "Printer" objects which parse and output the state of the process after each instruction. There are currently two types of printers, nested ones and register ones. These are called NestingPrinter and RegPrinter respectively.
util/statetrace/printer.hh:
Declaration of "Printer" objects
util/statetrace/refcnt.hh:
This is copied from m5. I should use the one already in the tree, but I'll do that later.
util/statetrace/regstate.hh:
Interface for accessing registers.
util/statetrace/statetrace.cc:
Main file with argument parsing and the "main" function which contains the tracing loop.
util/statetrace/tracechild.cc:
Implementation of the base tracechild class.
util/statetrace/tracechild.hh:
Declaration of the base tracechild class.
util/statetrace/tracechild_arch.cc:
This file hooks in support for the appropriate architecture. Just the implementation is brought in, since the main program should ideally not have to know anything at all about an architecture other than it's interface.
util/statetrace/x86.format:
An example output template for x86. A few example SPARC templates will be added later.
--HG--
extra : convert_revision : 7c8bf8230907aba42ed1e707b9ca2d6da0d4e6d4
120 lines
3.9 KiB
C++
120 lines
3.9 KiB
C++
/*
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* Copyright (c) 2006 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: Gabe Black
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*/
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#include <iostream>
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#include <errno.h>
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#include <sys/ptrace.h>
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#include <stdint.h>
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#include "tracechild_i386.hh"
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using namespace std;
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char * I386TraceChild::regNames[numregs] = {
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//GPRs
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"eax", "ebx", "ecx", "edx",
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//Index registers
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"esi", "edi",
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//Base pointer and stack pointer
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"ebp", "esp",
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//Segmentation registers
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"cs", "ds", "es", "fs", "gs", "ss",
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//PC
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"eip"};
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int64_t I386TraceChild::getRegs(user_regs_struct & myregs, int num)
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{
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assert(num < numregs && num >= 0);
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switch(num)
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{
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//GPRs
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case EAX: return myregs.eax;
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case EBX: return myregs.ebx;
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case ECX: return myregs.ecx;
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case EDX: return myregs.edx;
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//Index registers
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case ESI: return myregs.esi;
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case EDI: return myregs.edi;
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//Base pointer and stack pointer
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case EBP: return myregs.ebp;
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case ESP: return myregs.esp;
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//Segmentation registers
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case CS: return myregs.cs;
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case DS: return myregs.ds;
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case ES: return myregs.es;
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case FS: return myregs.fs;
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case GS: return myregs.gs;
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case SS: return myregs.ss;
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//PC
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case EIP: return myregs.eip;
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default:
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assert(0);
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return 0;
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}
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}
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bool I386TraceChild::update(int pid)
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{
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oldregs = regs;
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if(ptrace(PTRACE_GETREGS, pid, 0, ®s) != 0)
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return false;
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for(unsigned int x = 0; x < numregs; x++)
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{
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regDiffSinceUpdate[x] =
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(getRegVal(x) != getOldRegVal(x));
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}
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}
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I386TraceChild::I386TraceChild()
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{
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for(unsigned int x = 0; x < numregs; x++)
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regDiffSinceUpdate[x] = false;
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}
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int64_t I386TraceChild::getRegVal(int num)
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{
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return getRegs(regs, num);
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}
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int64_t I386TraceChild::getOldRegVal(int num)
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{
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return getRegs(oldregs, num);
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}
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char * I386TraceChild::printReg(int num)
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{
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sprintf(printBuffer, "0x%08X", getRegVal(num));
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return printBuffer;
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}
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TraceChild * genTraceChild()
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{
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return new I386TraceChild;
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}
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