| 1 | #include <signal.h> |
| 2 | #include "head.h" |
| 3 | #include <a.out.h> |
| 4 | |
| 5 | struct user u; |
| 6 | L_INT cntval; |
| 7 | INT signo; |
| 8 | INT adrflg; |
| 9 | long oldaddr = -1; |
| 10 | |
| 11 | docommand() { |
| 12 | register char *p; |
| 13 | register int i; |
| 14 | register ADDR addr, odot; |
| 15 | struct proct *procp; |
| 16 | |
| 17 | if (signo == SIGINT) signo = 0; |
| 18 | cntval = 1; |
| 19 | adrflg = 0; |
| 20 | errflg = 0; |
| 21 | |
| 22 | if (scallf) { |
| 23 | doscall(); |
| 24 | setcur(); |
| 25 | return; |
| 26 | } |
| 27 | |
| 28 | if (reflag) { /* search for regular expression */ |
| 29 | dore(); |
| 30 | return; |
| 31 | } |
| 32 | |
| 33 | if (cmd == '\0') { |
| 34 | if (integ != 0 && var[0] != '\0') { |
| 35 | error("Invalid command (1)"); |
| 36 | return; |
| 37 | } |
| 38 | if (integ != 0) { /* print line number */ |
| 39 | ffind(integ); |
| 40 | fprint(); |
| 41 | return; |
| 42 | } |
| 43 | if (var[0] != 0) { |
| 44 | printf("Unexpected null command\n"); |
| 45 | return; |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | switch (cmd) { |
| 50 | |
| 51 | case 'a': |
| 52 | debug = !debug; |
| 53 | break; |
| 54 | |
| 55 | case 't': |
| 56 | prframe(); |
| 57 | break; |
| 58 | |
| 59 | case 'e': |
| 60 | p = args; |
| 61 | if (*p == '\0') { |
| 62 | printf("%.8s() in \"%s\"\n", curproc()->pname, curfile); |
| 63 | break; |
| 64 | } |
| 65 | |
| 66 | while (*p != '\0') |
| 67 | if (*p++ == '.') goto l1; |
| 68 | /* argument is procedure name */ |
| 69 | procp = findproc(args); |
| 70 | if ((procp->pname[0] != '\0') && (procp->sfptr != badfile)) { |
| 71 | finit(adrtofilep(procp->paddr)->sfilename); |
| 72 | ffind(procp->lineno); |
| 73 | } |
| 74 | else printf("Can't find %s\n", args); |
| 75 | printf("%.8s() in \"%s\"\n", curproc()->pname, curfile); |
| 76 | break; |
| 77 | |
| 78 | l1: /* argument is filename */ |
| 79 | finit(args); |
| 80 | printf("\"%s\"\n", curfile); |
| 81 | break; |
| 82 | |
| 83 | case 'p': |
| 84 | if (integ) ffind(integ); |
| 85 | fprint(); |
| 86 | break; |
| 87 | |
| 88 | case 'q': |
| 89 | exit(0); |
| 90 | |
| 91 | case 'w': |
| 92 | if (integ) ffind(integ); |
| 93 | i = fline; |
| 94 | fback(WINDOW/2); |
| 95 | fprintn(WINDOW); |
| 96 | ffind(i); |
| 97 | break; |
| 98 | |
| 99 | case 'x': |
| 100 | prdebug(); |
| 101 | break; |
| 102 | |
| 103 | case 'z': |
| 104 | if (integ) ffind(integ); |
| 105 | fprintn(WINDOW); |
| 106 | break; |
| 107 | |
| 108 | case '-': |
| 109 | fback(integ ? integ : 1); |
| 110 | fpargs(); |
| 111 | break; |
| 112 | |
| 113 | case '+': |
| 114 | fforward(integ ? integ : 1); |
| 115 | fpargs(); |
| 116 | break; |
| 117 | |
| 118 | case '\n': |
| 119 | fforward(1); |
| 120 | fprint(); |
| 121 | break; |
| 122 | |
| 123 | case '\004': |
| 124 | fforward(1); |
| 125 | printf("\b"); |
| 126 | fprintn(WINDOW); |
| 127 | break; |
| 128 | |
| 129 | case 'r': |
| 130 | if (debug) error("calling subpcs"); |
| 131 | if (integ) cntval = integ; |
| 132 | if (!executing) { |
| 133 | executing = TRUE; |
| 134 | if (integ) cntval = integ; |
| 135 | subpcs('r'); |
| 136 | executing = FALSE; |
| 137 | } |
| 138 | if (debug) error("exiting subpcs"); |
| 139 | /* |
| 140 | setcur(); |
| 141 | break; |
| 142 | */ |
| 143 | |
| 144 | case 'c': |
| 145 | if (debug) error("calling subpcs"); |
| 146 | if (integ) cntval = integ; |
| 147 | subpcs('c'); |
| 148 | if (debug) error("exiting subpcs"); |
| 149 | if (!signo) printf("Breakpoint"); |
| 150 | printf(" at\n"); |
| 151 | setcur(); |
| 152 | break; |
| 153 | |
| 154 | case 's': |
| 155 | singstep(integ ? integ : 1); |
| 156 | if (signo) printf("\n"); |
| 157 | setcur(); |
| 158 | break; |
| 159 | |
| 160 | case 'n': |
| 161 | odot = *(ADDR *) (((ADDR) &u) + PC); |
| 162 | for (i=1; i<100; i++) { |
| 163 | dot = getaddr(adrtoprocp(odot)->pname, adrtolineno(odot)+i); |
| 164 | if (dot != odot || dot == -1) break; |
| 165 | } |
| 166 | if (odot == dot || dot == -1) { |
| 167 | error("Cannot find next line"); |
| 168 | break; |
| 169 | } |
| 170 | if (debug) printf("Setting bkpt with i=%d at %d, odot = %d\n", i, dot, odot); |
| 171 | odot = dot; |
| 172 | subpcs('b'); |
| 173 | subpcs('c'); |
| 174 | if (!signo) printf("Next statement\n"); |
| 175 | else printf(" at\n"); |
| 176 | setcur(); |
| 177 | dot = odot; |
| 178 | subpcs('d'); |
| 179 | break; |
| 180 | |
| 181 | case 'b': |
| 182 | if (proc[0] == '\0' && integ == 0) { |
| 183 | prbkpt(); |
| 184 | } |
| 185 | else { |
| 186 | dot = getaddr(proc,integ); |
| 187 | if (dot == -1) { |
| 188 | error("Cannot set breakpoint"); |
| 189 | break; |
| 190 | } |
| 191 | subpcs('b'); |
| 192 | printf("%.8s:%d b\n",adrtoprocp(dot)->pname, |
| 193 | adrtolineno(dot)); |
| 194 | } |
| 195 | break; |
| 196 | |
| 197 | case 'd': |
| 198 | if (proc[0] == '\0' && integ == 0) { |
| 199 | idbkpt(); |
| 200 | break; |
| 201 | } |
| 202 | dot = getaddr(proc,integ); |
| 203 | if (dot == -1) { |
| 204 | error("Non existent breakpoint"); |
| 205 | break; |
| 206 | } |
| 207 | subpcs('d'); |
| 208 | break; |
| 209 | |
| 210 | case 'm': |
| 211 | addr = varaddr(proc[0] ? proc : curproc()->pname, var); |
| 212 | printf("stopped with value %d\n", monex(addr, 'd')); |
| 213 | setcur(); |
| 214 | break; |
| 215 | |
| 216 | case '/': |
| 217 | if (var[0] == '.' && var[1] == '\0') { |
| 218 | if (integ == 0) integ = oldaddr; |
| 219 | dispf((ADDR) integ, args[0] ? args : odesc, |
| 220 | oclass == N_RSYM ? oclass : N_GSYM, otype, 0); |
| 221 | oldaddr = integ; |
| 222 | break; |
| 223 | } |
| 224 | if (integ) { |
| 225 | dispf((ADDR) integ, args, N_GSYM, 0, 0); |
| 226 | break; |
| 227 | } |
| 228 | oldaddr = dispvar(proc[0] ? proc : curproc()->pname, var, args); |
| 229 | break; |
| 230 | |
| 231 | case '=': |
| 232 | if (var[0] == '\0') |
| 233 | addr = getaddr(proc, integ); |
| 234 | else |
| 235 | addr = varaddr(proc[0] ? proc : curproc()->pname, var); |
| 236 | if (addr == -1) |
| 237 | error("Unknown address"); |
| 238 | else |
| 239 | printf("0x%x\n", addr); |
| 240 | break; |
| 241 | |
| 242 | case '!': |
| 243 | if (var[0] == '\0') |
| 244 | addr = getaddr(proc, integ); |
| 245 | else |
| 246 | addr = varaddr(proc[0] ? proc : curproc()->pname, var); |
| 247 | if (addr == -1) |
| 248 | error("Unknown variable"); |
| 249 | else |
| 250 | if (sl_class == N_RSYM) |
| 251 | putreg(addr,typetodesc(sl_type,subflag)[0],argvalue(args)); |
| 252 | else |
| 253 | putval(addr,typetodesc(sl_type,subflag)[0],argvalue(args)); |
| 254 | break; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | fpargs() { |
| 259 | register int i; |
| 260 | |
| 261 | switch(args[0]) { |
| 262 | case 'p': |
| 263 | case '\0': |
| 264 | fprint(); |
| 265 | break; |
| 266 | case 'w': |
| 267 | i = fline; |
| 268 | fback(WINDOW/2); |
| 269 | fprintn(WINDOW); |
| 270 | ffind(i); |
| 271 | break; |
| 272 | case 'z': |
| 273 | fprintn(WINDOW); |
| 274 | break; |
| 275 | } |
| 276 | } |