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+/*
+ * Copyright (c) 2002-2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Nathan Binkert
+ */
+
+#ifndef __ARCH_ALPHA_REMOTE_GDB_HH__
+#define __ARCH_ALPHA_REMOTE_GDB_HH__
+
+#include <map>
+
+#include "arch/types.hh"
+#include "base/remote_gdb.hh"
+#include "cpu/pc_event.hh"
+#include "base/pollevent.hh"
+
+class System;
+class ThreadContext;
+class PhysicalMemory;
+
+namespace SparcISA
+{
+ class RemoteGDB : public BaseRemoteGDB
+ {
+ private:
+ friend void debugger();
+ friend class GDBListener;
+
+ protected:
+ class Event : public PollEvent
+ {
+ protected:
+ RemoteGDB *gdb;
+
+ public:
+ Event(RemoteGDB *g, int fd, int e);
+ void process(int revent);
+ };
+
+ friend class Event;
+ Event *event;
+
+ protected:
+ // Machine memory
+ bool write(Addr addr, size_t size, const char *data);
+
+ public:
+ RemoteGDB(System *system, ThreadContext *context);
+ ~RemoteGDB();
+
+ bool acc(Addr addr, size_t len);
+ int signal(int type);
+
+ protected:
+ void getregs();
+ void setregs();
+
+ void clearSingleStep();
+ void setSingleStep();
+
+ PCEventQueue *getPcEventQueue();
+
+ protected:
+ class HardBreakpoint : public PCEvent
+ {
+ private:
+ RemoteGDB *gdb;
+
+ public:
+ int refcount;
+
+ public:
+ HardBreakpoint(RemoteGDB *_gdb, Addr addr);
+ std::string name() { return gdb->name() + ".hwbkpt"; }
+
+ virtual void process(ThreadContext *tc);
+ };
+ friend class HardBreakpoint;
+
+ typedef std::map<Addr, HardBreakpoint *> break_map_t;
+ typedef break_map_t::iterator break_iter_t;
+ break_map_t hardBreakMap;
+
+ bool insertSoftBreak(Addr addr, size_t len);
+ bool removeSoftBreak(Addr addr, size_t len);
+ bool insertHardBreak(Addr addr, size_t len);
+ bool removeHardBreak(Addr addr, size_t len);
+
+ protected:
+ struct TempBreakpoint {
+ Addr address; // set here
+ MachInst bkpt_inst; // saved instruction at bkpt
+ int init_count; // number of times to skip bkpt
+ int count; // current count
+ };
+
+ TempBreakpoint notTakenBkpt;
+ TempBreakpoint takenBkpt;
+
+ void clearTempBreakpoint(TempBreakpoint &bkpt);
+ void setTempBreakpoint(TempBreakpoint &bkpt, Addr addr);
+ };
+}
+
+#endif /* __ARCH_ALPHA_REMOTE_GDB_H__ */