2 * Copyright (c) 2002-2005 The Regents of The University of Michigan
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.
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.
28 * Authors: Nathan Binkert
31 #ifndef __REMOTE_GDB_HH__
32 #define __REMOTE_GDB_HH__
36 #include "base/kgdb.h"
37 #include "cpu/pc_event.hh"
38 #include "base/pollevent.hh"
39 #include "base/socket.hh"
49 typedef TheISA::MachInst MachInst;
51 friend void debugger();
52 friend class GDBListener;
55 class Event : public PollEvent
61 Event(RemoteGDB *g, int fd, int e);
62 void process(int revent);
67 GDBListener *listener;
72 uint64_t gdbregs[KGDB_NUMREGS];
87 void putbyte(uint8_t b);
89 int recv(char *data, int len);
90 void send(const char *data);
94 bool read(Addr addr, size_t size, char *data);
95 bool write(Addr addr, size_t size, const char *data);
97 template <class T> T read(Addr addr);
98 template <class T> void write(Addr addr, T data);
101 RemoteGDB(System *system, ExecContext *context);
104 void replaceExecContext(ExecContext *xc) { context = xc; }
110 bool acc(Addr addr, size_t len);
111 static int signal(int type);
118 void clearSingleStep();
119 void setSingleStep();
121 PCEventQueue *getPcEventQueue();
124 class HardBreakpoint : public PCEvent
133 HardBreakpoint(RemoteGDB *_gdb, Addr addr);
134 std::string name() { return gdb->name() + ".hwbkpt"; }
136 virtual void process(ExecContext *xc);
138 friend class HardBreakpoint;
140 typedef std::map<Addr, HardBreakpoint *> break_map_t;
141 typedef break_map_t::iterator break_iter_t;
142 break_map_t hardBreakMap;
144 bool insertSoftBreak(Addr addr, size_t len);
145 bool removeSoftBreak(Addr addr, size_t len);
146 bool insertHardBreak(Addr addr, size_t len);
147 bool removeHardBreak(Addr addr, size_t len);
150 struct TempBreakpoint {
151 Addr address; // set here
152 MachInst bkpt_inst; // saved instruction at bkpt
153 int init_count; // number of times to skip bkpt
154 int count; // current count
157 TempBreakpoint notTakenBkpt;
158 TempBreakpoint takenBkpt;
160 void clearTempBreakpoint(TempBreakpoint &bkpt);
161 void setTempBreakpoint(TempBreakpoint &bkpt, Addr addr);
169 RemoteGDB::read(Addr addr)
172 read(addr, sizeof(T), (char *)&temp);
178 RemoteGDB::write(Addr addr, T data)
179 { write(addr, sizeof(T), (const char *)&data); }
184 class Event : public PollEvent
187 GDBListener *listener;
190 Event(GDBListener *l, int fd, int e);
191 void process(int revent);
198 ListenSocket listener;
203 GDBListener(RemoteGDB *g, int p);
211 #endif /* __REMOTE_GDB_H__ */