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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef SCI_DEBUG_H
#define SCI_DEBUG_H
#include "common/list.h"
#include "sci/engine/vm_types.h" // for StackPtr
namespace Sci {
// These types are used both as identifiers and as elements of bitfields
enum BreakpointType {
/**
* Break when a selector is executed. Data contains (char *) selector name
* (in the format Object::Method)
*/
BREAK_SELECTOREXEC = 1 << 0, // break when a function selector is executed
BREAK_SELECTORREAD = 1 << 1, // break when a variable selector is read
BREAK_SELECTORWRITE = 1 << 2, // break when a variable selector is written
/**
* Break when an exported function is called. Data contains
* script_no << 16 | export_no.
*/
BREAK_EXPORT = 1 << 3,
BREAK_ADDRESS = 1 << 4 // break when pc is at this address
};
struct Breakpoint {
BreakpointType type;
union {
uint32 address; ///< Breakpoints on exports
reg32_t regAddress; ///< Breakpoints on addresses
};
Common::String name; ///< Breakpoints on selector names
};
enum DebugSeeking {
kDebugSeekNothing = 0,
kDebugSeekCallk = 1, // Step forward until callk is found
kDebugSeekLevelRet = 2, // Step forward until returned from this level
kDebugSeekSpecialCallk = 3, // Step forward until a /special/ callk is found
kDebugSeekGlobal = 4, // Step forward until one specified global variable is modified
kDebugSeekStepOver = 5 // Step forward until we reach same stack-level again
};
struct DebugState {
bool debugging;
bool breakpointWasHit;
bool stopOnEvent;
DebugSeeking seeking; // Stepping forward until some special condition is met
int runningStep; // Set to > 0 to allow multiple stepping
int seekLevel; // Used for seekers that want to check their exec stack depth
int seekSpecial; // Used for special seeks
int old_pc_offset;
StackPtr old_sp;
Common::List<Breakpoint> _breakpoints; //< List of breakpoints
int _activeBreakpointTypes; //< Bit mask specifying which types of breakpoints are active
};
// Various global variables used for debugging are declared here
extern int g_debug_sleeptime_factor;
extern int g_debug_simulated_key;
extern bool g_debug_track_mouse_clicks;
} // End of namespace Sci
#endif
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