//
//  EXPStackMachine.h
//  StackMachine
//
//  Created by Ashley on 23/04/2007.
//  Copyright 2007 __MyCompanyName__. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "EXPAssemblerConstants.h"
#include <gsl/gsl_errno.h>
#include <gsl/gsl_spline.h>
#import "history_protocol.h"

#define NUMINDEXREGS 16

typedef union
{
	unsigned int i;
	float x;
} intfloat;

struct table_s {
	gsl_interp_accel *acc;
	gsl_spline *spline;
	double xmin;
	double xmax;
	double ymin;
	double ymax;
};
typedef struct table_s tableStructure;

@interface EXPStackMachine : NSObject {
	unsigned short int *memory;
	unsigned int memorySize;
//	double *store;
//	unsigned int storeSize;
	
	int nConstants;
	int nAuxiliaries;
	int nVariables;
	
	tableStructure **tables;
	int nTables;
	
	BOOL echo;
//	'DMA' pointer
	int ptr;

//	Registers.
	unsigned int pc;								// Programme counter
	unsigned int sp;								// Data stack ointer
	unsigned int lp;								// Local variable base pointer
	unsigned int gp;								// Global variable base pointer
	unsigned int rp;								// Return stack pointer
//	unsigned int index[NUMINDEXREGS];				// Index registers
	intfloat acc;										// Acumulator

	id <history, NSObject> _history;
	double _startTime;
	double _stopTime;
	double _time;

}

- (id) initWithMemory:(unsigned int)newMemorySize; //store:(unsigned int)newStoreSize

- (unsigned short int *) memory;
//- (double *) store;

- (int) nConstants;
- (void) setNConstants:(int) newNConstants;
- (int) nAuxiliaries;
- (void) setNAuxiliaries:(int) newNAuxiliaries;
- (int) nVariables;
- (void) setNVariables:(int) newNVariables;

- (void) setTables:(tableStructure **)newTables;
- (tableStructure **)tables;
- (void) setNTables:(int) newNTables;
- (int) nTables;

- (void) setHistory:(id <history, NSObject>)history;
- (id) history;
- (void) setTime:(double)time;
- (void) setStartTime:(double)startTime;
- (double) startTime;
- (void) setStopTime:(double)stopTime;
- (double) stopTime;

- (BOOL) echo;
- (void) setEcho:(BOOL)newEcho;

- (void) putOpcode:(unsigned short int)opcode mode:(unsigned short int)mode;
- (void) putUInt:(unsigned int)val;
- (void) putUShInt:(unsigned short int)val;
- (void) putUInt:(unsigned int)val at:(unsigned int)location;
- (void) putDouble:(double)val;

- (void) runFromPc;

- (unsigned int)ptr;
- (void) setPtr:(unsigned int)newPtr;

- (unsigned int)pc;
- (void) setPc:(unsigned int)newPc;
- (unsigned int)sp;
- (void) setSp:(unsigned int)newSp;
- (unsigned int)gp;
- (void) setGp:(unsigned int)newGp;
- (double)acc_fp;
- (void) setAccFP:(double)newAcc;

- (void) dump:(unsigned int)start to:(unsigned int)stop;

@end