projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| ca0bf12f | 1 | |
| 7a1812dd ML |
2 | /* Copyright (c) 1982 Regents of the University of California */ |
| 3 | ||
| ca0bf12f | 4 | /* static char sccsid[] = "@(#)process.rep 1.2 1/18/82"; */ |
| 7a1812dd ML |
5 | |
| 6 | /* | |
| 7 | * This file defines the representation of a process. | |
| 8 | * It is MACHINE DEPENDENT. | |
| 9 | */ | |
| 10 | ||
| 11 | #define STOPPED 0177 | |
| 12 | #define FINISHED 0 | |
| 13 | ||
| ca0bf12f | 14 | #ifdef vax |
| 7a1812dd | 15 | #define NREG 12 /* maximum number of saved registers */ |
| ca0bf12f ML |
16 | #else |
| 17 | #define NREG 14 /* maximum number of saved registers */ | |
| 18 | #endif | |
| 7a1812dd ML |
19 | #define CSIZE 101 /* size of instruction cache */ |
| 20 | ||
| 21 | /* | |
| 22 | * Cache-ing of instruction segment is done to reduce the number | |
| 23 | * of calls to ptrace. | |
| 24 | */ | |
| 25 | ||
| 26 | typedef struct { | |
| 27 | WORD addr; | |
| 28 | WORD val; | |
| 29 | } CACHEWORD; | |
| 30 | ||
| 31 | /* | |
| 32 | * This structure holds the information we need from the user structure. | |
| 33 | */ | |
| 34 | ||
| 35 | struct process { | |
| 36 | int pid; /* process being traced */ | |
| 37 | WORD reg[NREG]; /* process's registers */ | |
| 38 | WORD ap, fp, sp, pc; /* special registers */ | |
| 39 | WORD oreg[NREG]; /* registers when process last stopped */ | |
| 40 | WORD oap, ofp, osp, opc;/* special registers when process stopped */ | |
| 41 | int status; /* either STOPPED or FINISHED */ | |
| 42 | int signo; /* signal that stopped process */ | |
| 43 | int exitval; /* return value from exit() */ | |
| 44 | long sigset; /* bit array of traced signals */ | |
| 45 | CACHEWORD word[CSIZE]; /* text segment cache */ | |
| 46 | }; | |
| 47 | ||
| 48 | /* | |
| 49 | * Process manipulation routines local to this module. | |
| 50 | */ | |
| 51 | ||
| 52 | pstart(); /* start up a process */ | |
| 53 | pcont(); /* continue execution */ | |
| 54 | pstep(); /* single step */ | |
| 55 | pio(); /* process memory move */ | |
| 56 | psigtrace(); /* catch/don't catch a signal */ | |
| 57 | unsetsigtraces(); /* don't catch any signals */ | |
| 58 | ||
| 59 | /* | |
| 60 | * These definitions are for the arguments to "pio". | |
| 61 | */ | |
| 62 | ||
| 63 | typedef enum { PREAD, PWRITE } PIO_OP; | |
| 64 | typedef enum { TEXTSEG, DATASEG } PIO_SEG; |