remote_gdb.hh revision 3536:89aa06409e4d
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 { 51 private: 52 friend void debugger(); 53 friend class GDBListener; 54 55 protected: 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: 70 // Machine memory 71 bool write(Addr addr, size_t size, const char *data); 72 73 public: 74 RemoteGDB(System *system, ThreadContext *context); 75 ~RemoteGDB(); 76 77 bool acc(Addr addr, size_t len); 78 79 protected: 80 void getregs(); 81 void setregs(); 82 83 void clearSingleStep(); 84 void setSingleStep(); 85 86 PCEventQueue *getPcEventQueue(); 87 88 protected: 89 class HardBreakpoint : public PCEvent 90 { 91 private: 92 RemoteGDB *gdb; 93 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); 127 }; 128} 129 130#endif /* __ARCH_ALPHA_REMOTE_GDB_H__ */ 131