1/*
2 * Copyright (c) 2002-2005 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: Nathan Binkert
29 */
30
31#ifndef __ARCH_ALPHA_REMOTE_GDB_HH__
32#define __ARCH_ALPHA_REMOTE_GDB_HH__
33
34#include <map>
35
36#include "arch/types.hh"
37#include "base/remote_gdb.hh"
38#include "cpu/pc_event.hh"
39#include "base/pollevent.hh"
40
41class System;
42class ThreadContext;
43class PhysicalMemory;
44
45namespace SparcISA
46{
47 class RemoteGDB : public BaseRemoteGDB
48 {
49 private:
50 friend void debugger();
51 friend class GDBListener;
52
53 protected:
54 class Event : public PollEvent
55 {
56 protected:
57 RemoteGDB *gdb;
58
59 public:
60 Event(RemoteGDB *g, int fd, int e);
61 void process(int revent);
62 };
63
64 friend class Event;
65 Event *event;
66
67 protected:
68 // Machine memory
69 bool write(Addr addr, size_t size, const char *data);
70
71 public:
72 RemoteGDB(System *system, ThreadContext *context);
73 ~RemoteGDB();
74
75 bool acc(Addr addr, size_t len);
76 int signal(int type);
77
78 protected:
79 void getregs();
80 void setregs();
81
82 void clearSingleStep();
83 void setSingleStep();
84
85 PCEventQueue *getPcEventQueue();
86
87 protected:
88 class HardBreakpoint : public PCEvent
89 {
90 private:
91 RemoteGDB *gdb;
92
93 public:
94 int refcount;
95
96 public:
97 HardBreakpoint(RemoteGDB *_gdb, Addr addr);
98 std::string name() { return gdb->name() + ".hwbkpt"; }
99
100 virtual void process(ThreadContext *tc);
101 };
102 friend class HardBreakpoint;
103
104 typedef std::map<Addr, HardBreakpoint *> break_map_t;
105 typedef break_map_t::iterator break_iter_t;
106 break_map_t hardBreakMap;
107
108 bool insertSoftBreak(Addr addr, size_t len);
109 bool removeSoftBreak(Addr addr, size_t len);
110 bool insertHardBreak(Addr addr, size_t len);
111 bool removeHardBreak(Addr addr, size_t len);
112
113 protected:
114 struct TempBreakpoint {
115 Addr address; // set here
116 MachInst bkpt_inst; // saved instruction at bkpt
117 int init_count; // number of times to skip bkpt
118 int count; // current count
119 };
120
121 TempBreakpoint notTakenBkpt;
122 TempBreakpoint takenBkpt;
123
124 void clearTempBreakpoint(TempBreakpoint &bkpt);
125 void setTempBreakpoint(TempBreakpoint &bkpt, Addr addr);
126 };
127}
128
129#endif /* __ARCH_ALPHA_REMOTE_GDB_H__ */