projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| f31c0eb1 PK |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
| 2 | ||
| 4b9ccde7 | 3 | /* static char sccsid[] = "@(#)pc.h 1.3 4/1/81"; */ |
| f31c0eb1 PK |
4 | |
| 5 | /* | |
| 6 | * random constants for pc | |
| 7 | */ | |
| 8 | ||
| 9 | /* | |
| 10 | * the name of the display. | |
| f31c0eb1 PK |
11 | */ |
| 12 | #define DISPLAYNAME "__disply" | |
| f31c0eb1 PK |
13 | |
| 14 | /* | |
| 15 | * the structure below describes the locals used by the run time system. | |
| 16 | * at function entry, at least this much space is allocated, | |
| 17 | * and the following information is filled in: | |
| 18 | * the address of a routine to close the current frame for unwinding, | |
| 19 | * a pointer to the display entry for the current static level and | |
| 20 | * the previous contents of the display for this static level. | |
| 21 | * the curfile location is used to point to the currently active file, | |
| 22 | * and is filled in as io is initiated. | |
| 23 | * one of these structures is allocated on the (negatively growing) stack. | |
| 24 | * at function entry, fp is set to point to the last field of the struct, | |
| 25 | * thus the offsets of the fields are as indicated below. | |
| 26 | */ | |
| 27 | struct rtlocals { | |
| 28 | struct iorec *curfile; | |
| 29 | struct dispsave dsave; | |
| 30 | struct dispsave *dptr; | |
| 31 | int (*unwind)(); | |
| 32 | } rtlocs; | |
| 33 | #define CURFILEOFFSET ( ( -sizeof rtlocs ) + sizeof rtlocs.unwind ) | |
| 34 | #define DSAVEOFFSET ( CURFILEOFFSET + sizeof rtlocs.curfile ) | |
| 35 | #define DPTROFFSET ( DSAVEOFFSET + sizeof rtlocs.dsave ) | |
| 36 | #define UNWINDOFFSET ( DPTROFFSET + sizeof rtlocs.dptr ) | |
| 37 | #define UNWINDNAME "_UNWIND" | |
| 38 | ||
| 39 | /* | |
| 40 | * the register save mask for saving no registers | |
| 41 | */ | |
| 42 | #define RSAVEMASK ( 0 ) | |
| 43 | ||
| 44 | /* | |
| 45 | * runtime check mask for divide check and integer overflow | |
| 46 | */ | |
| 47 | #define RUNCHECK ( ( 1 << 15 ) | ( 1 << 14 ) ) | |
| 48 | ||
| 49 | /* | |
| 50 | * formats for various names | |
| 51 | * NAMEFORMAT arbitrary length strings. | |
| 52 | * EXTFORMAT for externals, a preceding underscore. | |
| 53 | * PREFIXFORMAT used to print made up names with prefixes. | |
| 54 | * LABELPREFIX with getlab() makes up label names. | |
| 55 | * LLABELPREFIX with getlab() makes up sdb labels. | |
| e641ce92 | 56 | * FORMALPREFIX prefix for EXTFORMAT for formal entry points. |
| f31c0eb1 PK |
57 | * a typical use might be to print out a name with a preceeding underscore |
| 58 | * with putprintf( EXTFORMAT , 0 , name ); | |
| 59 | */ | |
| 60 | #define NAMEFORMAT "%s" | |
| 61 | #define EXTFORMAT "_%s" | |
| 62 | #define PREFIXFORMAT "%s%d" | |
| 63 | #define LABELPREFIX "L" | |
| 64 | #define LLABELPREFIX "LL" | |
| e641ce92 | 65 | #define FORMALPREFIX "__" |
| f31c0eb1 PK |
66 | |
| 67 | /* | |
| 68 | * the name of the statement counter | |
| 69 | */ | |
| 70 | #define STMTCOUNT "__stcnt" | |
| 71 | ||
| 72 | /* | |
| 73 | * the name of the pcp counters | |
| 74 | */ | |
| 75 | #define PCPCOUNT "__pcpcount" | |
| 76 | ||
| 77 | /* | |
| 78 | * a vector of pointer to enclosing functions for fully qualified names. | |
| 79 | */ | |
| 80 | char *enclosing[ DSPLYSZ ]; | |
| 81 | ||
| 82 | /* | |
| 83 | * and of course ... | |
| 84 | */ | |
| 85 | #define BITSPERBYTE 8 | |
| 86 | ||
| 87 | /* | |
| 88 | * error number for case label not found (ECASE) | |
| 89 | * stolen from ~mckusick/px/lib/h01errs.h | |
| 90 | */ | |
| 91 | #define ECASE 5 |