Commit | Line | Data |
---|---|---|
d94e2462 M |
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 *lp; | |
21 | CHAR lastc; | |
22 | POS corhdr[512]; | |
23 | POS *endhdr; | |
24 | ||
25 | INT signo; | |
26 | L_INT dot; | |
27 | INT pid; | |
28 | L_INT cntval; | |
29 | L_INT loopcnt; | |
30 | ||
31 | ||
32 | ||
33 | /* sub process control */ | |
34 | ||
35 | subpcs(modif) | |
36 | { | |
37 | REG INT check; | |
38 | INT execsig; | |
39 | INT runmode; | |
40 | REG BKPTR bkptr; | |
41 | STRING comptr; | |
42 | execsig=0; loopcnt=cntval; | |
43 | ||
44 | switch(modif) { | |
45 | ||
46 | /* delete breakpoint */ | |
47 | case 'd': case 'D': | |
48 | IF (bkptr=scanbkpt(shorten(dot))) | |
49 | THEN bkptr->flag=0; return; | |
50 | ELSE error(NOBKPT); | |
51 | FI | |
52 | ||
53 | /* set breakpoint */ | |
54 | case 'b': case 'B': | |
55 | IF (bkptr=scanbkpt(shorten(dot))) | |
56 | THEN bkptr->flag=0; | |
57 | FI | |
58 | FOR bkptr=bkpthead; bkptr; bkptr=bkptr->nxtbkpt | |
59 | DO IF bkptr->flag == 0 | |
60 | THEN break; | |
61 | FI | |
62 | OD | |
63 | IF bkptr==0 | |
64 | THEN IF (bkptr=sbrk(sizeof *bkptr)) == -1 | |
65 | THEN error(SZBKPT); | |
66 | ELSE bkptr->nxtbkpt=bkpthead; | |
67 | bkpthead=bkptr; | |
68 | FI | |
69 | FI | |
70 | bkptr->loc = dot; | |
71 | bkptr->initcnt = bkptr->count = cntval; | |
72 | bkptr->flag = BKPTSET; | |
73 | check=MAXCOM-1; comptr=bkptr->comm; rdc(); lp--; | |
74 | REP *comptr++ = readchar(); | |
75 | PER check-- ANDF lastc!=EOR DONE | |
76 | *comptr=0; lp--; | |
77 | IF check | |
78 | THEN return; | |
79 | ELSE error(EXBKPT); | |
80 | FI | |
81 | ||
82 | /* exit */ | |
83 | case 'k' :case 'K': | |
84 | IF pid | |
85 | THEN printf("%d: killed", pid); endpcs(); return; | |
86 | FI | |
87 | error(NOPCS); | |
88 | ||
89 | /* run program */ | |
90 | case 'r': case 'R': | |
91 | endpcs(); | |
92 | setup(); | |
93 | runmode=CONTIN; | |
94 | break; | |
95 | ||
96 | /* single step */ | |
97 | case 's': case 'S': | |
98 | runmode=SINGLE; | |
99 | IF pid | |
100 | THEN execsig=getsig(signo); | |
101 | ELSE setup(); loopcnt--; | |
102 | FI | |
103 | break; | |
104 | ||
105 | /* continue with optional signal */ | |
106 | case 'c': case 'C': case 0: | |
107 | IF pid==0 THEN error(NOPCS); FI | |
108 | runmode=CONTIN; | |
109 | execsig=getsig(signo); | |
110 | break; | |
111 | ||
112 | default: error(BADMOD); | |
113 | } | |
114 | ||
115 | IF loopcnt>0 ANDF runpcs(runmode, execsig) | |
116 | THEN printf("breakpoint%16t"); | |
117 | ELSE printf("stopped at%16t"); | |
118 | FI | |
119 | delbp(); | |
120 | printpc(); | |
121 | } | |
122 |