gecko-dev/ef/Debugger/Debugger.h

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef _DEBUGGER_H_
#define _DEBUGGER_H_
#include "nspr.h"
#include "Pool.h"
#include "InterestingEvents.h"
#include "DebuggerChannel.h"
#define MAX_BREAKPOINTS 10
// The BreakPoint class holds the
class NS_EXTERN BreakPoint {
Uint32 pc; // The address of the instruction
Uint64 old_instruction; // Saved copy of the instruction
bool enabled; // Whether it's enabled
public:
void clear() { pc = 0; enabled = false; };
};
class DebuggerChannel;
//
// The debugger object holds the current state of the debugger
class NS_EXTERN DebuggerState {
BreakPoint *breakpoints; // Breakpoints
Int32 nbreakpoints; // number of breakpoints set so far
bool enabled; // Was -debug flag passed ?
Pool &pool; // All memory allocations
PRThread *thread; // The debugger thread
public:
void setBreakPoint(void *pc);
void clearBreakPoint(void *pc);
void clearAllBreakPoints();
// Constructors
DebuggerState(Pool& p);
DebuggerState(Pool&p, bool _enabled);
// Enabled ?
void enable();
bool getEnabled() { return enabled; };
PRThread *getThread() { return thread; };
static void eventHandler(void *arg);
void waitForDebugger();
static void handleAddressToMethod(DebuggerChannel& inChannel);
static void handleMethodToAddress(DebuggerChannel& inChannel);
};
// Takes a pc offset from the beginning of a method and converts it to a
// bytecode offset,
class pcToByteCodeTable {
// A dumb implementation to start with. Space can be saved by storing
// this as a range
Int32 *table;
Int32 nEntries;
public:
pcToByteCodeTable() { table = NULL; nEntries = 0; };
// XXX - memory leak. Need to use a pool.
pcToByteCodeTable(Int32 size) { table = new Int32[size]; nEntries = size; };
void setSize(Int32 size);
Int32 operator [](Int32 pcOffset) const { return table[pcOffset]; };
};
class DebuggerServerChannel :
EventListener
{
DebuggerStream mSync;
DebuggerStream mAsync;
public:
static PRThread* spawnServer();
virtual void listenToMessage(BroadcastEventKind inKind, void* inArgument);
protected:
DebuggerServerChannel(PRFileDesc* inSync, PRFileDesc* inAsync) :
EventListener(gCompileOrLoadBroadcaster),
mSync(inSync),
mAsync(inAsync) { }
void handleRequest(Int32 inRequest);
void handleMethodToAddress();
void handleRequestDebuggerThread();
void handleAddressToMethod();
void handleNotifyOnCompileLoadMethod();
void handleRunClass();
static void serverThread(void*);
void serverLoop();
};
// Platform specific stuff
int SetBreakPoint(void *code);
#ifndef WIN32
void SetupBreakPointHandler();
#endif
inline void
pcToByteCodeTable::setSize(Int32 size)
{
assert(table == NULL);
table = new Int32[size];
nEntries = size;
}
#endif /* _DEBUGGER_H_ */