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Annotation of 42BSD/ucb/pascal/src/tmps.h, revision 1.1

1.1     ! root        1: /* Copyright (c) 1983 Regents of the University of California */
        !             2: 
        !             3: /* static      char sccsid[] = "@(#)tmps.h 1.1 2/28/83"; */
        !             4: 
        !             5: /*
        !             6:  * The following structure is used
        !             7:  * to keep track of the amount of variable
        !             8:  * storage required by each block.
        !             9:  * "Max" is the high water mark, "off"
        !            10:  * the current need. Temporaries for "for"
        !            11:  * loops and "with" statements are allocated
        !            12:  * in the local variable area and these
        !            13:  * numbers are thereby changed if necessary.
        !            14:  *
        !            15:  * for the compiler,
        !            16:  *     low_water is the lowest number register allocated of its type
        !            17:  *     next_avail is the next available register of its type
        !            18:  */
        !            19: 
        !            20: #ifdef PC
        !            21: #ifdef vax
        !            22:     /*
        !            23:      * the number of register types.
        !            24:      * the details of how many of each kind of register there is
        !            25:      * (and what they are for) is known in tmps.c
        !            26:      */
        !            27: #define        NUMREGTYPES     1
        !            28: #define        REG_GENERAL     0
        !            29: #endif vax
        !            30: 
        !            31: #ifdef mc68000
        !            32:     /*
        !            33:      * the number of register types.
        !            34:      * the details of how many of each kind of register there is
        !            35:      * (and what they are for) is known in tmps.c
        !            36:      */
        !            37: #define        NUMREGTYPES     2
        !            38: #define        REG_DATA        0
        !            39: #define        REG_ADDR        1
        !            40: #endif mc68000
        !            41: #endif PC
        !            42: 
        !            43: struct om {
        !            44:        long    om_max;
        !            45: #ifdef PC
        !            46:        long    low_water[NUMREGTYPES];
        !            47: #endif PC
        !            48:        struct tmps {
        !            49:            long        om_off;
        !            50: #ifdef PC
        !            51:            long        next_avail[NUMREGTYPES];
        !            52: #endif PC
        !            53:        }       curtmps;
        !            54: } sizes[DSPLYSZ];
        !            55: 
        !            56:     /*
        !            57:      * an enumeration for whether a temporary can be a register.  cf. tmps.c
        !            58:      */
        !            59: #define NOREG 0
        !            60: #define REGOK 1

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