1 files changed, 189 insertions, 0 deletions
diff --git a/base/remote_gdb.hh b/base/remote_gdb.hh
new file mode 100644
index 000000000..315860ead
--- /dev/null
+++ b/base/remote_gdb.hh
@@ -0,0 +1,189 @@
+/*
+ * Copyright (c) 2003 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.
+ */
+
+#ifndef __REMOTE_GDB_HH__
+#define __REMOTE_GDB_HH__
+
+#include "kgdb.h"
+#include "pc_event.hh"
+#include "pollevent.hh"
+#include "socket.hh"
+
+class System;
+class ExecContext;
+class PhysicalMemory;
+
+class RemoteGDB
+{
+  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:
+    int fd;
+    uint64_t gdbregs[KGDB_NUMREGS];
+
+  protected:
+#ifdef notyet
+    label_t recover;
+#endif
+    bool active;
+    bool attached;
+
+    System *system;
+    PhysicalMemory *pmem;
+    ExecContext *context;
+
+  protected:
+    uint8_t getbyte();
+    void putbyte(uint8_t b);
+
+    int recv(char *data, int len);
+    void send(const char *data);
+
+  protected:
+    // Machine memory
+    bool read(Addr addr, size_t size, char *data);
+    bool write(Addr addr, size_t size, const char *data);
+
+    template <class T> T read(Addr addr);
+    template <class T> void write(Addr addr, T data);
+
+  public:
+    RemoteGDB(System *system, ExecContext *context);
+    ~RemoteGDB();
+
+    void attach(int fd);
+    void detach();
+    bool isattached();
+
+    bool acc(Addr addr, size_t len);
+    static int signal(int type);
+    bool trap(int type);
+
+  protected:
+    void getregs();
+    void setregs();
+
+    void clearSingleStep();
+    void setSingleStep();
+
+    PCEventQueue *getPcEventQueue();
+
+  protected:
+    class HardBreakpoint : public PCEvent
+    {
+      private:
+        RemoteGDB *gdb;
+
+      public:
+        HardBreakpoint(RemoteGDB *_gdb, Addr addr);
+
+        int refcount;
+        virtual void process(ExecContext *xc);
+    };
+    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);
+};
+
+template <class T>
+inline T
+RemoteGDB::read(Addr addr)
+{
+    T temp;
+    read(addr, sizeof(T), (char *)&temp);
+    return temp;
+}
+
+template <class T>
+inline void
+RemoteGDB::write(Addr addr, T data)
+{ write(addr, sizeof(T), (const char *)&data); }
+
+class GDBListener
+{
+  protected:
+    class Event : public PollEvent
+    {
+      protected:
+        GDBListener *listener;
+
+      public:
+        Event(GDBListener *l, int fd, int e);
+        void process(int revent);
+    };
+
+    friend class Event;
+    Event *event;
+
+  protected:
+    ListenSocket listener;
+    RemoteGDB *gdb;
+    int port;
+
+  public:
+    GDBListener(RemoteGDB *g, int p);
+    ~GDBListener();
+
+    void accept();
+    void listen();
+};
+
+#endif /* __REMOTE_GDB_H__ */