/***************************************************************************/
/* omf51.h */
/***************************************************************************/
#include <stdio.h>
#include <stdlib.h>

/***************************************************************************/
#ifndef OMF51_H
#define OMF51_H

#define	BYTE	unsigned char
#define DBYTE	unsigned short

#define REC_TYPE_MHDR	0x02	/* Module Header Record */
#define REC_TYPE_MEND	0x04	/* Module End Record */
#define REC_TYPE_CNT	0x06	/* Content Record */
#define REC_TYPE_FIX	0x08	/* Fixup Record */
#define REC_TYPE_SEG	0x0E	/* Segment Definition Record */
#define REC_TYPE_SCD	0x10	/* Scope Definition Record */
#define REC_TYPE_DBG	0x12	/* Debug Item Record */
#define REC_TYPE_PUB	0x16	/* Public Definition Record */
#define REC_TYPE_EXT	0x18	/* External Definition Record */
#define REC_TYPE_LML	0x26	/* LIB ModLocs Record */
#define REC_TYPE_LMN	0x28	/* LIB ModName Record */
#define REC_TYPE_LDIC	0x2A	/* LIB DICTNRY Record */
#define REC_TYPE_LHDR	0x2C	/* LIB Header Record */

#define MAX_MHDR			8
#define MAX_MEND			8
#define MAX_SEG				255
#define MAX_SEGDEF			255
#define MAX_PUB				255
#define MAX_PUBDEF			255
#define MAX_EXT				255
#define MAX_EXTDEF			255
#define	MAX_SCD				255
#define MAX_DBG				255
#define MAX_DBGINFO			255
#define MAX_CNT				255
#define MAX_FIX				255
#define MAX_FIXDEF			255

#define	MAX_MODULES			255

#define DBG_DEFTYP_LOCAL	0x00
#define DBG_DEFTYP_PUBLIC	0x01
#define DBG_DEFTYP_SEGMENT	0x02
#define DBG_DEFTYP_LINE		0x03

#define SCD_BLKTYP_MOD_BLOCK	0x00
#define SCD_BLKTYP_DO_BLOCK		0x01
#define SCD_BLKTYP_PROC_BLOCK	0x02
#define SCD_BLKTYP_MOD_END		0x03
#define SCD_BLKTYP_DO_END		0x04
#define SCD_BLKTYP_PROC_END		0x05

#define	OBJECT_IS_REL			0
#define	OBJECT_IS_ABS			1

/***************************************************************************/
/* Module Header Record */
typedef struct _sMHDR
{
	char name[41];
	BYTE trnID, nameLen, reserved, chkSum;
	DBYTE len;

} MHDR; 

/* Module End Record */
typedef struct _sMEND
{
	char name[41];
	BYTE regMSK, nameLen, res8, chkSum;
	DBYTE len, res16;
} MEND; 

typedef struct _sSEGDEF
{
	BYTE name[41], nameLen, segID, segINFO, relTYP, res8;
	DBYTE segBASE, segSIZE;
} SEGDEF;

/* Segment Definition Record */
typedef struct _sSEG
{
	BYTE chkSum;
	DBYTE numSegDef, len;
//	SEGDEF segDef[MAX_SEGDEF];
	SEGDEF *segDef;
} SEG;

typedef struct _sPUBDEF
{
	BYTE name[41], nameLen, segID, symINFO, res8;
	DBYTE offset;

} PUBDEF;
typedef struct _sPUB
{
	BYTE chkSum;
	DBYTE numPubDef, len;
//	PUBDEF pubDef[MAX_PUBDEF];
	PUBDEF *pubDef;

} PUB;

typedef struct _sEXTDEF
{
	BYTE name[41], nameLen, idBlk, extID, symINFO, res8;

} EXTDEF;

typedef struct _sEXT
{
	BYTE chkSum;
	DBYTE numExtDef, len;
//	EXTDEF extDef[MAX_EXTDEF];
	EXTDEF *extDef;

} EXT;

typedef struct _sSCD
{
	char name[41];
	BYTE blkTYP, chkSum, nameLen;
	DBYTE len;

} SCD; 

typedef struct _sDBGINFO
{
	BYTE name[41], nameLen, segID, segINFO, symINFO, res8;
	DBYTE offset, lineNumber;

} DBGINFO;

typedef struct _sDBG
{
	BYTE chkSum, defTYP;
	DBYTE numDbgInfo, len;
//	DBGINFO dbgInfo[MAX_DBGINFO];
	DBGINFO *dbgInfo;

} DBG;

typedef struct _sCNT
{
	BYTE chkSum, segID, *pData;
	DBYTE len, offset, size;

} CNT;

typedef struct _sOP
{
	BYTE IDBlk, ID;
	DBYTE offset;
} OP;

typedef struct _sFIXDEF
{
	BYTE refTYP;
	DBYTE refLoc;
	OP operand;

} FIXDEF;

typedef struct _sFIX
{
	BYTE chkSum;
	DBYTE len, numFixDef;
//	FIXDEF fixDef[MAX_FIXDEF];
	FIXDEF *fixDef;
} FIX;

typedef struct _sMODULE
{
	char *pName;
	DBYTE numDbg, numCnt, numFix;
	DBG *ppDbg[MAX_DBG];
	CNT *ppCnt[MAX_CNT];
	FIX *ppFix[MAX_FIX];

} MODULE;

typedef struct _sOBJECT
{
	char *fileName[1024];
	DBYTE numUnknown, numMHDR, numMEND, numCNT, numFIX, numSEG, numSCD;
	DBYTE numDBG, numPUB, numEXT, numLML, numLMN, numLDIC, numLHDR;
	DBYTE numModules;
	FILE *pFile;
	MHDR *mhdr;
	MEND *mend;
	SEG  *seg;
	PUB  *pub;
	EXT  *ext;
	SCD	 *scd;
	DBG  *dbg;
	CNT  *cnt;
	FIX  *fix;
	DBYTE numUnimplemented;
	MODULE *module;
	BYTE allocType;

} OBJECT;

/***************************************************************************/
void OmfInit(struct _sOBJECT *pObj);
int OmfOpen(struct _sOBJECT *pObj, char *pName);
void OmfClose(struct _sOBJECT *pObj);
void OmfRead(struct _sOBJECT *pObj);
void OmfPrint(struct _sOBJECT *pObj);
void Omf2Hex(struct _sOBJECT *pObj);

/***************************************************************************/
#endif /* OMF51_H */