Commit | Line | Data |
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d449853c TL |
1 | #include "head.h" |
2 | #include <a.out.h> | |
3 | struct user u; | |
4 | #include <stdio.h> | |
5 | INT signo; | |
6 | INT adrflg; | |
7 | INT pid; | |
8 | L_INT cntval; | |
9 | ||
10 | ||
11 | /* service routines for sub process control */ | |
12 | ||
13 | ||
14 | /* | |
15 | * single step until loc with descriptor format d is modified | |
16 | * return its new value. | |
17 | */ | |
18 | monex(loc, d) | |
19 | ADDR loc; char d; { | |
20 | register ADDR oldval; | |
21 | ||
22 | oldval = getval(loc, d); | |
23 | do { | |
24 | subpcs('s'); | |
25 | } while (oldval == getval(loc, d)); | |
26 | return(getval(loc, d)); | |
27 | } | |
28 | ||
29 | /* single step count source stmts */ | |
30 | singstep(count) { | |
31 | register int thisline, curline; | |
32 | register ADDR dot; | |
33 | register struct proct *thisproc; | |
34 | ||
35 | dot = *(ADDR *) (((ADDR) &u) + PC); | |
36 | thisproc = adrtoprocp(dot); | |
37 | thisline = adrtolineno(dot); | |
38 | if (count == 0) count = 1; | |
39 | for(; count; count--) { | |
40 | do { | |
41 | subpcs('s'); | |
42 | dot = *(ADDR *) (((ADDR) &u) + PC); | |
43 | curline = adrtolineno(dot); | |
44 | } while (!signo && | |
45 | ((thisproc == adrtoprocp(dot) && thisline == curline) || | |
46 | curline == -1)); | |
47 | if (signo) return; | |
48 | } | |
49 | } | |
50 | ||
51 | doscall() { | |
52 | int subargs[NUMARGS]; /* subargs[0] = address, | |
53 | subargs[1] = number of arguments | |
54 | subargs[2:NUMARGS] = actual arguments */ | |
55 | union { | |
56 | struct { | |
57 | int w[128-NUMARGS]; | |
58 | }; | |
59 | struct { | |
60 | char c[4*(128-NUMARGS)]; | |
61 | }; | |
62 | }substr; | |
63 | ||
64 | register int i, numchars, *subargp; | |
65 | register char ch; | |
66 | ADDR straddr, adr, praddr; | |
67 | ADDR j; | |
68 | ||
69 | praddr = extaddr(proc); | |
70 | if (praddr == -1) { | |
71 | printf("Cannot find %s\n", proc); | |
72 | return; | |
73 | } | |
74 | straddr = extaddr("_dbargs"); | |
75 | if (straddr == -1) { | |
76 | error("Program not loaded with -lg"); | |
77 | return; | |
78 | } | |
79 | ||
80 | numchars = 0; | |
81 | subargp = subargs; | |
82 | argsp++; | |
83 | *subargp++ = praddr; | |
84 | subargp++; | |
85 | ||
86 | for (i=0; i<NUMARGS - 2; i++) { /* process an argument */ | |
87 | ch = *argsp; | |
88 | if (ch == '\'') { | |
89 | *subargp++ = *(argsp+1); | |
90 | argsp += 2; | |
91 | } else if (ch == '"') { | |
92 | *subargp++ = straddr + sizeof subargs + numchars; | |
93 | argsp++; | |
94 | for (;;) { | |
95 | substr.c[numchars++] = ch = *argsp++; | |
96 | if (ch == '"') { | |
97 | substr.c[numchars-1] = '\0'; | |
98 | break; | |
99 | } | |
100 | if (ch == '\0') { | |
101 | error("Unterminated string constant"); | |
102 | return; | |
103 | } | |
104 | if (numchars > sizeof substr.c) { | |
105 | error("Too many string constants"); | |
106 | return; | |
107 | } | |
108 | } | |
109 | } else if ((ch >= '0' && ch <= '9') || ch == '-') { | |
110 | *subargp++ = readint(&argsp); | |
111 | } else if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || | |
112 | ch == '_') { | |
113 | cpname(var, argsp); | |
114 | j = varaddr(curproc()->pname, var); | |
115 | if (j == -1) { | |
116 | printf("Unknown variable: %s\n", argsp); | |
117 | return; | |
118 | } | |
119 | *subargp++ = getval(j, typetodesc(sl_type, 0)[0]); | |
120 | do { | |
121 | argsp++; | |
122 | } while (varchar(*argsp) || number(*argsp)); | |
123 | } else if (ch != ')') { | |
124 | printf("Unexpected character %c\n", ch); | |
125 | return; | |
126 | } | |
127 | ||
128 | do { | |
129 | ch = *argsp++; | |
130 | } while(ch == ' '); | |
131 | if (ch == ')') { | |
132 | dot = *(ADDR *)(((ADDR)&u)+PC) = extaddr("_dbsubc"); | |
133 | if (dot == -1) { | |
134 | error("Internal error - cannot find _dbsubc"); | |
135 | return; | |
136 | } | |
137 | adrflg = 1; | |
138 | cntval = 1; | |
139 | if (pid == 0 || signo) subpcs('r'); | |
140 | subargs[1] = (subargp - subargs) - 2; | |
141 | adr = straddr; | |
142 | for (j=0; j<=(subargp-subargs); j++) { | |
143 | put(adr, DSP, subargs[j]); | |
144 | adr += WORDSIZE; | |
145 | } | |
146 | adr = straddr + sizeof subargs; | |
147 | for (j=0; j<(numchars+WORDSIZE-1)/WORDSIZE; j++) { | |
148 | put(adr, DSP, substr.w[j]); | |
149 | adr += WORDSIZE; | |
150 | } | |
151 | errflg = 0; | |
152 | subpcs('c'); | |
153 | dot = *(ADDR *)(((ADDR)&u)+PC); | |
154 | if (dot != extaddr("_dbsubn")) { | |
155 | if (!signo) printf("Breakpoint\n"); | |
156 | else printf(" at\n"); | |
157 | return; | |
158 | } | |
159 | if (*argsp++ == '/') { | |
160 | dispf((ADDR) 0, *argsp ? *argsp : 'd', N_RSYM, 0, 0); | |
161 | } | |
162 | else | |
163 | printf("Procedure returned normally\n"); | |
164 | reset(); | |
165 | } | |
166 | while (*argsp == ' ' || *argsp == ',') | |
167 | argsp++; | |
168 | } | |
169 | ||
170 | error ("Too many arguments"); | |
171 | ||
172 | } |