projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 505bf312 KB |
1 | /*- |
| 2 | * Copyright (c) 1982 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * %sccs.include.redist.c% | |
| 023ccbaf | 6 | * |
| 505bf312 | 7 | * @(#)process.rep 5.5 (Berkeley) %G% |
| 50ad1403 | 8 | */ |
| ca0bf12f | 9 | |
| 7a1812dd ML |
10 | /* |
| 11 | * This file defines the representation of a process. | |
| 12 | * It is MACHINE DEPENDENT. | |
| 13 | */ | |
| 14 | ||
| 15 | #define STOPPED 0177 | |
| 16 | #define FINISHED 0 | |
| 17 | ||
| ca0bf12f | 18 | #ifdef vax |
| 7a1812dd | 19 | #define NREG 12 /* maximum number of saved registers */ |
| 82d3cd01 KM |
20 | #endif |
| 21 | #ifdef tahoe | |
| 22 | #define NREG 13 | |
| 23 | #endif | |
| 24 | #ifdef mc68000 | |
| ca0bf12f ML |
25 | #define NREG 14 /* maximum number of saved registers */ |
| 26 | #endif | |
| 7a1812dd ML |
27 | #define CSIZE 101 /* size of instruction cache */ |
| 28 | ||
| 29 | /* | |
| 30 | * Cache-ing of instruction segment is done to reduce the number | |
| 31 | * of calls to ptrace. | |
| 32 | */ | |
| 33 | ||
| 34 | typedef struct { | |
| 35 | WORD addr; | |
| 36 | WORD val; | |
| 37 | } CACHEWORD; | |
| 38 | ||
| 39 | /* | |
| 40 | * This structure holds the information we need from the user structure. | |
| 41 | */ | |
| 42 | ||
| 43 | struct process { | |
| 44 | int pid; /* process being traced */ | |
| 45 | WORD reg[NREG]; /* process's registers */ | |
| 82d3cd01 KM |
46 | #ifdef tahoe |
| 47 | WORD fp, sp, pc; /* special registers */ | |
| 48 | #else | |
| 7a1812dd | 49 | WORD ap, fp, sp, pc; /* special registers */ |
| 82d3cd01 | 50 | #endif |
| 7a1812dd ML |
51 | WORD oreg[NREG]; /* registers when process last stopped */ |
| 52 | WORD oap, ofp, osp, opc;/* special registers when process stopped */ | |
| 53 | int status; /* either STOPPED or FINISHED */ | |
| 54 | int signo; /* signal that stopped process */ | |
| 55 | int exitval; /* return value from exit() */ | |
| 56 | long sigset; /* bit array of traced signals */ | |
| 57 | CACHEWORD word[CSIZE]; /* text segment cache */ | |
| 58 | }; | |
| 59 | ||
| 60 | /* | |
| 61 | * Process manipulation routines local to this module. | |
| 62 | */ | |
| 63 | ||
| 7d4de299 KB |
64 | int pstart(); /* start up a process */ |
| 65 | int pcont(); /* continue execution */ | |
| 66 | int pstep(); /* single step */ | |
| 67 | int pio(); /* process memory move */ | |
| 68 | int psigtrace(); /* catch/don't catch a signal */ | |
| 69 | int unsetsigtraces(); /* don't catch any signals */ | |
| 7a1812dd ML |
70 | |
| 71 | /* | |
| 72 | * These definitions are for the arguments to "pio". | |
| 73 | */ | |
| 74 | ||
| 75 | typedef enum { PREAD, PWRITE } PIO_OP; | |
| 76 | typedef enum { TEXTSEG, DATASEG } PIO_SEG; | |
| 82d3cd01 KM |
77 | |
| 78 | /* macros for things that used to be functions */ | |
| 79 | ||
| 80 | #define iread(buf, addr, nbytes) dread(buf, addr+ENDOFF, nbytes) | |
| 81 | #define iwrite(buf, addr, nbytes) dwrite(buf, addr+ENDOFF, nbytes) | |
| 7d4de299 KB |
82 | #define dread(buf, addr, nbytes) drdwr(PREAD, buf, addr, nbytes) |
| 83 | #define dwrite(buf, addr, nbytes) drdwr(PWRITE, buf, addr, nbytes) |