tracechild.hh revision 8108 
1/*
2 * Copyright (c) 2006 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Gabe Black
29 */
30
31#ifndef REGSTATE_I386_HH
32#define REGSTATE_I386_HH
33
34#include <linux/user.h>
35#include <sys/types.h>
36#include <sys/ptrace.h>
37#include <cassert>
38#include <string>
39
40#include "tracechild.hh"
41
42class I386TraceChild : public TraceChild
43{
44  public:
45    enum RegNum
46    {
47        //GPRs
48        EAX, EBX, ECX, EDX,
49        //Index registers
50        ESI, EDI,
51        //Base pointer and stack pointer
52        EBP, ESP,
53        //Segmentation registers
54        CS, DS, ES, FS, GS, SS,
55        //PC
56        EIP,
57        numregs
58    };
59  private:
60    char printBuffer [256];
61    static char * regNames[numregs];
62    int64_t getRegs(user_regs_struct & myregs, int num);
63    user_regs_struct regs;
64    user_regs_struct oldregs;
65    bool regDiffSinceUpdate[numregs];
66
67  protected:
68    bool update(int pid);
69
70  public:
71
72    I386TraceChild();
73
74    int
75    getNumRegs()
76    {
77        return numregs;
78    }
79
80    bool
81    diffSinceUpdate(int num)
82    {
83        assert(num < numregs && num >= 0);
84        return regDiffSinceUpdate[num];
85    }
86
87    std::string
88    getRegName(int num)
89    {
90        assert(num < numregs && num >= 0);
91        return regNames[num];
92    }
93
94    int64_t getRegVal(int num);
95    int64_t getOldRegVal(int num);
96    uint64_t getPC() {return getRegVal(EIP);}
97    uint64_t getSP() {return getRegVal(ESP);}
98    std::ostream &
99    outputStartState(std::ostream & output)
100    {
101        output << "Printing i386 initial state not yet implemented"
102               << std::endl;
103        return output;
104    }
105
106    char * printReg(int num);
107};
108
109#endif
110