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#ifndef GEN_H

#define GEN_H

/*

 *      code generation structures and constants

 */

#define F_REG   1       /* register direct mode allowed */

#define F_BREG  2               /* branch register */

#define F_MEM   4       /* memory alterable modes allowed */

#define F_IMMED 8       /* immediate mode allowed */

#define F_ALT   7       /* alterable modes */

#define F_DALT  5       /* data alterable modes */

#define F_VOL   16      /* need volitile operand */

#define F_IMMED18       64      // 18-bit immediate constant

#define F_IMM0  128             /* immediate value 0 */

#define F_IMM8  256

#define F_IMMED13  512

#define F_FPREG 1024

#define F_IMM6  2048

#define BF_ASSIGN       4096

#define F_VREG  8192

#define F_VMREG 16384

#define F_ALL   (15|1024|F_VREG|F_VMREG)      /* all modes allowed */

#define F_NOVALUE 32768         /* dont need result value */

/*      addressing mode structure       */

/*

typedef AMODE {

        unsigned int mode : 6;

        unsigned int preg : 8;

        unsigned int sreg : 8;

        unsigned int segment : 4;

        unsigned int defseg : 1;

        unsigned int tempflag : 1;

        unsigned int type : 16;

        char FloatSize;

        unsigned int isUnsigned : 1;

        unsigned int lowhigh : 2;

        unsigned int isVolatile : 1;

        unsigned int isPascal : 1;

        unsigned int rshift : 8;

        short int deep;

        short int deep2;

        ENODE *offset;

        int8_t scale;

} AMODE;

*/

/*      output code structure   */

/*

OCODE {

        OCODE *fwd, *back, *comment;

        short opcode;

        short length;

        unsigned int isVolatile : 1;

        unsigned int isReferenced : 1;  // label is referenced by code

        unsigned int remove : 1;

        short pregreg;

        short predop;

        AMODE *oper1, *oper2, *oper3, *oper4;

};

*/

enum e_seg {

        op_ns = 0,

        op_ds = 1 << 8,

        op_ts = 2 << 8,

        op_bs = 3 << 8,

        op_rs = 4 << 8,

        op_es = 5 << 8,

        op_seg6 = 6 << 8,

        op_seg7 = 7 << 8,

        op_seg8 = 8 << 8,

        op_seg9 = 9 << 8,

        op_seg10 = 10 << 8,

        op_seg11 = 11 << 8,

        op_seg12 = 12 << 8,

        op_seg13 = 13 << 8,

        op_ss = 14 << 8,

        op_cs = 15 << 8

};

#define LR              1

#define CLR             11

#define BP              26

#define SP              27

#define DS              0x21

#define BSS             0x23

#define LS              0x29

#define XLS             0x2A

#define SS              0x2E

#define CS              0x2F

#endif