/*
 * as31.h
 *
 * PACKAGE: as31 - 8031/8051 Assembler.
 *
 * DESCRIPTION:
 *      The sole header file for the 8031/8051 assembler package.
 *      It defines several structures used by the yacc stack.
 *      It defines several macros for testing the bitsize of numeric
 *      quantities.
 *
 *      Some macros to extract information from the mode structure.
 *
 * REVISION HISTORY:
 *      Jan. 19, 1990 - Created. (Ken Stauffer)
 *
 * AUTHOR:
 *      All code in this file written by Ken Stauffer (University of Calgary).
 *      January, 1990.
 *
 */

/* ----------------------------------------------------------------------
 * user / keyword symbol structures:
 */

struct opcode {
        char *name;
        int type;
        unsigned char *bytes;
};

struct symbol {
        char *name;
        int type;
        long value;
        struct symbol *next;
};

#define UNDEF   0
#define LABEL   1

/* ----------------------------------------------------------------------
 * addressing mode stuff:
 */

struct mode {
        unsigned char mode;          /* value to index with */
        unsigned char size;          /* # of bytes used */
        unsigned char orval;        /* value OR'd to obcode */
        unsigned char byte1;        /* extra byte 1 */
        unsigned char byte2;        /* extra byte 2 */
};

#define set_md(m,a)     ((m).mode=(a))
#define set_sz(m,a)     ((m).size=(a))
#define set_ov(m,a)     ((m).orval=(a))
#define set_b1(m,a)     ((m).byte1=(a))
#define set_b2(m,a)     ((m).byte2=(a))

#define get_md(m)       ((m).mode)
#define get_sz(m)       ((m).size)
#define get_ov(m)       ((m).orval)
#define get_b1(m)       ((m).byte1)
#define get_b2(m)       ((m).byte2)

/* ----------------------------------------------------------------------
 * yacc stack stuff:
 */

struct value {
        long v;
        unsigned char d;                /* expression defined flag */
};

union ystack {
        long value;
        struct value val;
        struct opcode *op;
        struct symbol *sym;
        struct mode mode;
        char *str;
};

/* ----------------------------------------------------------------------
 * IS_BIT_MAPPED_RAM:
 *      True is the byte 'a' is the byte address of a bit mapped
 *      RAM location.
 */

#define isbmram(a)      (((a)&0xf0)==0x20)

/* ----------------------------------------------------------------------
 * IS_BIT_MAPPED_SFR:
 *      True is the byte 'a' is the byte address of a bit mapped
 *      SPECIAL FUCTION REGISTER.
 */

#define isbmsfr(a)      (((a)&0x80) && !((a) & 0x07))

/* ----------------------------------------------------------------------
 * isbit8, ...
 *      Macros to check the sizes of values and to convert
 *      a value to a certain, size.
 *
 */

#define size8      (~0x00ff)
#define size11    (~0x07ff)
#define size13    (~0x1fff)
#define size16    (~0xffff)

#define size10    (~0x03ff)
#define size12    (~0x0fff)
#define size15    (~0x7fff)

#define isbit8(v)       ( !( ((v)>=0) ? (v)&size8 : -(v)>=128) )
#define isbit11(v)      ( !( ((v)>=0) ? (v)&size11 : (-(v))&size10 ) )
#define isbit13(v)      ( !( ((v)>=0) ? (v)&size13 : (-(v))&size12 ) )
#define isbit16(v)      ( !( ((v)>=0) ? (v)&size16 : (-(v))&size15 ) )

/* ----------------------------------------------------------------------
 * Size of user hash table.
 */

#define HASHTABSIZE          1000

/* ----------------------------------------------------------------------
 * Macros to nicely test which pass we are in.
 */

#define pass1         (!pass)
#define pass2         (pass)

/* -------- TOKENS ------------------------------------------------------
 *
 * This includes the header file generated by yacc -d.
 * NOPE is defined inside of as31.y, which does not
 * need to re-include the tokens twice, thus NOPE prevents this.
 *
 */

#ifdef NOPE
#else
#include "ytab.h"
#endif