2 * Copyright (c) 2002-2004 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
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14 * this software without specific prior written permission.
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29 #ifndef __REMOTE_GDB_HH__
30 #define __REMOTE_GDB_HH__
34 #include "base/kgdb.h"
35 #include "cpu/pc_event.hh"
36 #include "base/pollevent.hh"
37 #include "base/socket.hh"
46 class Event : public PollEvent
52 Event(RemoteGDB *g, int fd, int e);
53 void process(int revent);
61 uint64_t gdbregs[KGDB_NUMREGS];
76 void putbyte(uint8_t b);
78 int recv(char *data, int len);
79 void send(const char *data);
83 bool read(Addr addr, size_t size, char *data);
84 bool write(Addr addr, size_t size, const char *data);
86 template <class T> T read(Addr addr);
87 template <class T> void write(Addr addr, T data);
90 RemoteGDB(System *system, ExecContext *context);
93 void replaceExecContext(ExecContext *xc) { context = xc; }
99 bool acc(Addr addr, size_t len);
100 static int signal(int type);
107 void clearSingleStep();
108 void setSingleStep();
110 PCEventQueue *getPcEventQueue();
113 class HardBreakpoint : public PCEvent
122 HardBreakpoint(RemoteGDB *_gdb, Addr addr);
123 std::string name() { return gdb->name() + ".hwbkpt"; }
125 virtual void process(ExecContext *xc);
127 friend class HardBreakpoint;
129 typedef std::map<Addr, HardBreakpoint *> break_map_t;
130 typedef break_map_t::iterator break_iter_t;
131 break_map_t hardBreakMap;
133 bool insertSoftBreak(Addr addr, size_t len);
134 bool removeSoftBreak(Addr addr, size_t len);
135 bool insertHardBreak(Addr addr, size_t len);
136 bool removeHardBreak(Addr addr, size_t len);
139 struct TempBreakpoint {
140 Addr address; // set here
141 MachInst bkpt_inst; // saved instruction at bkpt
142 int init_count; // number of times to skip bkpt
143 int count; // current count
146 TempBreakpoint notTakenBkpt;
147 TempBreakpoint takenBkpt;
149 void clearTempBreakpoint(TempBreakpoint &bkpt);
150 void setTempBreakpoint(TempBreakpoint &bkpt, Addr addr);
158 RemoteGDB::read(Addr addr)
161 read(addr, sizeof(T), (char *)&temp);
167 RemoteGDB::write(Addr addr, T data)
168 { write(addr, sizeof(T), (const char *)&data); }
173 class Event : public PollEvent
176 GDBListener *listener;
179 Event(GDBListener *l, int fd, int e);
180 void process(int revent);
187 ListenSocket listener;
192 GDBListener(RemoteGDB *g, int p);
200 #endif /* __REMOTE_GDB_H__ */