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