tracechild.hh revision 8113:5c7c804e0645 
1/*
2 * Copyright (c) 2007 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_AMD64_HH
32#define REGSTATE_AMD64_HH
33
34#include <sys/user.h>
35#include <sys/types.h>
36#include <sys/ptrace.h>
37#include <cassert>
38#include <string>
39
40#include "base/tracechild.hh"
41
42class AMD64TraceChild : public TraceChild
43{
44  public:
45    enum RegNum
46    {
47        //GPRs
48        RAX, RCX, RDX, RBX,
49        //Base pointer and stack pointer
50        RSP, RBP,
51        //Index registers
52        RSI, RDI,
53        //New 64 bit mode registers
54        R8, R9, R10, R11, R12, R13, R14, R15,
55        //Segmentation registers
56        CS, DS, ES, FS, GS, SS, FS_BASE, GS_BASE,
57        //PC
58        RIP,
59        //Flags
60        EFLAGS,
61        //MMX
62        MMX0_0, MMX0_1,
63        MMX1_0, MMX1_1,
64        MMX2_0, MMX2_1,
65        MMX3_0, MMX3_1,
66        MMX4_0, MMX4_1,
67        MMX5_0, MMX5_1,
68        MMX6_0, MMX6_1,
69        MMX7_0, MMX7_1,
70        //XMM
71        XMM0_0,  XMM0_1,  XMM0_2,  XMM0_3,
72        XMM1_0,  XMM1_1,  XMM1_2,  XMM1_3,
73        XMM2_0,  XMM2_1,  XMM2_2,  XMM2_3,
74        XMM3_0,  XMM3_1,  XMM3_2,  XMM3_3,
75        XMM4_0,  XMM4_1,  XMM4_2,  XMM4_3,
76        XMM5_0,  XMM5_1,  XMM5_2,  XMM5_3,
77        XMM6_0,  XMM6_1,  XMM6_2,  XMM6_3,
78        XMM7_0,  XMM7_1,  XMM7_2,  XMM7_3,
79        XMM8_0,  XMM8_1,  XMM8_2,  XMM8_3,
80        XMM9_0,  XMM9_1,  XMM9_2,  XMM9_3,
81        XMM10_0, XMM10_1, XMM10_2, XMM10_3,
82        XMM11_0, XMM11_1, XMM11_2, XMM11_3,
83        XMM12_0, XMM12_1, XMM12_2, XMM12_3,
84        XMM13_0, XMM13_1, XMM13_2, XMM13_3,
85        XMM14_0, XMM14_1, XMM14_2, XMM14_3,
86        XMM15_0, XMM15_1, XMM15_2, XMM15_3,
87        numregs
88    };
89  private:
90    int64_t getRegs(user_regs_struct & myregs,
91            user_fpregs_struct &myfpregs,int num);
92    user_regs_struct regs;
93    user_regs_struct oldregs;
94    user_fpregs_struct fpregs;
95    user_fpregs_struct oldfpregs;
96    bool regDiffSinceUpdate[numregs];
97
98    uint64_t findSyscall();
99
100  protected:
101    bool update(int pid);
102
103  public:
104
105    AMD64TraceChild();
106
107    bool sendState(int socket);
108
109    int64_t getRegVal(int num);
110    int64_t getOldRegVal(int num);
111    uint64_t getPC() {return getRegVal(RIP);}
112    uint64_t getSP() {return getRegVal(RSP);}
113    std::ostream & outputStartState(std::ostream & output);
114
115    bool step();
116};
117
118#endif
119