projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0fc6e47b KB |
1 | /*- |
| 2 | * Copyright (c) 1980 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * %sccs.include.redist.c% | |
| 252367af | 6 | * |
| 0fc6e47b | 7 | * @(#)tmps.h 5.3 (Berkeley) %G% |
| 252367af | 8 | */ |
| 3ee769d9 PK |
9 | |
| 10 | /* | |
| 11 | * The following structure is used | |
| 12 | * to keep track of the amount of variable | |
| 13 | * storage required by each block. | |
| 14 | * "Max" is the high water mark, "off" | |
| 15 | * the current need. Temporaries for "for" | |
| 16 | * loops and "with" statements are allocated | |
| 17 | * in the local variable area and these | |
| 18 | * numbers are thereby changed if necessary. | |
| 19 | * | |
| 20 | * for the compiler, | |
| 21 | * low_water is the lowest number register allocated of its type | |
| 22 | * next_avail is the next available register of its type | |
| 23 | */ | |
| 24 | ||
| 25 | #ifdef PC | |
| 26 | #ifdef vax | |
| 27 | /* | |
| 28 | * the number of register types. | |
| 29 | * the details of how many of each kind of register there is | |
| 30 | * (and what they are for) is known in tmps.c | |
| 31 | */ | |
| 32 | #define NUMREGTYPES 1 | |
| 33 | #define REG_GENERAL 0 | |
| 34 | #endif vax | |
| 35 | ||
| fe8ff1f7 KM |
36 | #ifdef tahoe |
| 37 | /* | |
| 38 | * the number of register types. | |
| 39 | * the details of how many of each kind of register there is | |
| 40 | * (and what they are for) is known in tmps.c | |
| 41 | */ | |
| 42 | #define NUMREGTYPES 1 | |
| 43 | #define REG_GENERAL 0 | |
| 44 | #endif tahoe | |
| 45 | ||
| 3ee769d9 PK |
46 | #ifdef mc68000 |
| 47 | /* | |
| 48 | * the number of register types. | |
| 49 | * the details of how many of each kind of register there is | |
| 50 | * (and what they are for) is known in tmps.c | |
| 51 | */ | |
| 52 | #define NUMREGTYPES 2 | |
| 53 | #define REG_DATA 0 | |
| 54 | #define REG_ADDR 1 | |
| 55 | #endif mc68000 | |
| 56 | #endif PC | |
| 57 | ||
| 58 | struct om { | |
| 59 | long om_max; | |
| 60 | #ifdef PC | |
| 61 | long low_water[NUMREGTYPES]; | |
| 62 | #endif PC | |
| 63 | struct tmps { | |
| 64 | long om_off; | |
| 65 | #ifdef PC | |
| 66 | long next_avail[NUMREGTYPES]; | |
| 67 | #endif PC | |
| 68 | } curtmps; | |
| 69 | } sizes[DSPLYSZ]; | |
| 70 | ||
| 71 | /* | |
| 72 | * an enumeration for whether a temporary can be a register. cf. tmps.c | |
| 73 | */ | |
| 74 | #define NOREG 0 | |
| 75 | #define REGOK 1 |