111 lines
3.2 KiB
C++
111 lines
3.2 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 <sys/ptrace.h>
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#include <stdint.h>
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#include <cerrno>
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#include <iostream>
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#include "arch/i686/tracechild.hh"
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using namespace std;
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int64_t
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I686TraceChild::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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//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.xcs;
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case DS: return myregs.xds;
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case ES: return myregs.xes;
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case FS: return myregs.xfs;
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case GS: return myregs.xgs;
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case SS: return myregs.xss;
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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
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I686TraceChild::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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regDiffSinceUpdate[x] = (getRegVal(x) != getOldRegVal(x));
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}
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}
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I686TraceChild::I686TraceChild()
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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
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I686TraceChild::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
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I686TraceChild::getOldRegVal(int num)
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{
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return getRegs(oldregs, num);
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}
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bool
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I686TraceChild::sendState(int socket)
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{
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return false;
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}
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TraceChild *
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genTraceChild()
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{
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return new I686TraceChild;
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}
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