Commit | Line | Data |
---|---|---|
15df1725 HK |
1 | # |
2 | /* | |
3 | * | |
4 | * UNIX debugger | |
5 | * | |
6 | */ | |
7 | ||
8 | #include "defs.h" | |
9 | ||
10 | ||
11 | MSG NOBKPT; | |
12 | MSG SZBKPT; | |
13 | MSG EXBKPT; | |
14 | MSG NOPCS; | |
15 | MSG BADMOD; | |
16 | ||
17 | /* breakpoints */ | |
18 | BKPTR bkpthead; | |
19 | ||
20 | CHAR lastc; | |
21 | struct user u; | |
22 | ||
23 | INT signo; | |
24 | L_INT dot; | |
25 | INT pid; | |
26 | L_INT cntval; | |
27 | L_INT loopcnt; | |
28 | ||
29 | ||
30 | ||
31 | /* sub process control */ | |
32 | ||
33 | subpcs(modif) | |
34 | { | |
35 | REG INT check; | |
36 | INT execsig,runmode; | |
37 | REG BKPTR bkptr; | |
38 | STRING comptr; | |
39 | execsig=0; loopcnt=cntval; | |
40 | ||
41 | switch (modif) { | |
42 | ||
43 | /* delete breakpoint */ | |
44 | case 'd': case 'D': | |
45 | IF (bkptr=scanbkpt(dot)) | |
46 | THEN bkptr->flag=0; return; | |
47 | ELSE error(NOBKPT); | |
48 | FI | |
49 | ||
50 | /* set breakpoint */ | |
51 | case 'b': case 'B': | |
52 | IF (bkptr=scanbkpt(dot)) | |
53 | THEN bkptr->flag=0; | |
54 | FI | |
55 | FOR bkptr=bkpthead; bkptr; bkptr=bkptr->nxtbkpt | |
56 | DO IF bkptr->flag == 0 | |
57 | THEN break; | |
58 | FI | |
59 | OD | |
60 | IF bkptr==0 | |
61 | THEN IF (bkptr=(BKPTR) sbrk(sizeof *bkptr)) == (BKPTR) -1 | |
62 | THEN error(SZBKPT); | |
63 | ELSE bkptr->nxtbkpt=bkpthead; | |
64 | bkpthead=bkptr; | |
65 | FI | |
66 | FI | |
67 | bkptr->loc = dot; | |
68 | bkptr->initcnt = bkptr->count = cntval; | |
69 | bkptr->flag = BKPTSET; | |
70 | check=MAXCOM-1; comptr=bkptr->comm; /* rdc(); */ | |
71 | REP *comptr++ = readchar(); | |
72 | PER check-- ANDF lastc!=EOR DONE | |
73 | *comptr=0; | |
74 | IF check | |
75 | THEN return; | |
76 | ELSE error(EXBKPT); | |
77 | FI | |
78 | ||
79 | /* exit */ | |
80 | case 'k' :case 'K': | |
81 | IF pid | |
82 | THEN printf("%d: killed", pid); endpcs(); return; | |
83 | FI | |
84 | error(NOPCS); | |
85 | ||
86 | /* run program */ | |
87 | case 'r': case 'R': | |
88 | endpcs(); | |
89 | setup(); runmode=CONTIN; | |
90 | break; | |
91 | ||
92 | /* single step */ | |
93 | case 's': case 'S': | |
94 | IF pid | |
95 | THEN | |
96 | runmode=SINGLE; execsig=getsig(signo); | |
97 | ELSE setup(); loopcnt--; | |
98 | FI | |
99 | break; | |
100 | ||
101 | /* continue with optional signal */ | |
102 | case 'c': case 'C': case 0: | |
103 | IF pid==0 THEN error(NOPCS); FI | |
104 | runmode=CONTIN; execsig=getsig(signo); | |
105 | break; | |
106 | ||
107 | default: error(BADMOD); | |
108 | } | |
109 | ||
110 | runpcs(runmode,execsig); | |
111 | delbp(); | |
112 | } | |
113 |