remote_gdb.hh revision 10804:df2aa91dba5b 
1/*
2 * Copyright 2014 Google, Inc.
3 * Copyright (c) 2007 The Hewlett-Packard Development Company
4 * All rights reserved.
5 *
6 * The license below extends only to copyright in the software and shall
7 * not be construed as granting a license to any other intellectual
8 * property including but not limited to intellectual property relating
9 * to a hardware implementation of the functionality of the software
10 * licensed hereunder.  You may use the software subject to the license
11 * terms below provided that you ensure that this notice is replicated
12 * unmodified and in its entirety in all distributions of the software,
13 * modified or unmodified, in source code or in binary form.
14 *
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions are
17 * met: redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer;
19 * redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution;
22 * neither the name of the copyright holders nor the names of its
23 * contributors may be used to endorse or promote products derived from
24 * this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
37 *
38 * Authors: Gabe Black
39 */
40
41#ifndef __ARCH_X86_REMOTEGDB_HH__
42#define __ARCH_X86_REMOTEGDB_HH__
43
44#include <algorithm>
45
46#include "arch/x86/types.hh"
47#include "base/remote_gdb.hh"
48
49class System;
50class ThreadContext;
51
52namespace X86ISA
53{
54class RemoteGDB : public BaseRemoteGDB
55{
56  public:
57    enum
58    {
59        GDB32_EAX,
60        GDB32_ECX,
61        GDB32_EDX,
62        GDB32_EBX,
63        GDB32_ESP,
64        GDB32_EBP,
65        GDB32_ESI,
66        GDB32_EDI,
67        GDB32_EIP,
68        GDB32_EFLAGS,
69        GDB32_CS,
70        GDB32_SS,
71        GDB32_DS,
72        GDB32_ES,
73        GDB32_FS,
74        GDB32_GS,
75
76        GDB32_NUMREGS
77    };
78
79    enum
80    {
81        GDB64_RAX,
82        GDB64_RBX,
83        GDB64_RCX,
84        GDB64_RDX,
85        GDB64_RSI,
86        GDB64_RDI,
87        GDB64_RBP,
88        GDB64_RSP,
89        GDB64_R8,
90        GDB64_R9,
91        GDB64_R10,
92        GDB64_R11,
93        GDB64_R12,
94        GDB64_R13,
95        GDB64_R14,
96        GDB64_R15,
97        GDB64_RIP,
98        // These indices index into the reg cache treated as an array of 32
99        // bit integers. The next index is one beyond the previous, and then
100        // scaled up from an index into an array of 64 bit integers.
101        GDB64_RFLAGS_32 = (GDB64_RIP + 1) * 2,
102        GDB64_CS_32,
103        GDB64_SS_32,
104        GDB64_DS_32,
105        GDB64_ES_32,
106        GDB64_FS_32,
107        GDB64_GS_32,
108
109        // Scale the end index count back down (rounded up) to be for an
110        // array of 64 bit integers.
111        GDB64_NUMREGS = (GDB64_GS_32 + 1) / 2 + 1
112    };
113
114    RemoteGDB(System *system, ThreadContext *context);
115
116    bool acc(Addr addr, size_t len);
117
118  protected:
119    void getregs();
120    void setregs();
121
122    bool checkBpLen(size_t len) { return len == 1; }
123};
124
125const int GDB_REG_BYTES M5_VAR_USED =
126    std::max(RemoteGDB::GDB32_NUMREGS * sizeof(uint32_t),
127             RemoteGDB::GDB64_NUMREGS * sizeof(uint64_t));
128
129}
130
131#endif // __ARCH_X86_REMOTEGDB_HH__
132