ccdd87058c5c40688a0cf16e6d4ce4fb7c508044
[gem5.git] / util / statetrace / arch / tracechild_i386.hh
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
42 class 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