projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| ebcb7e71 BJ |
1 | # |
| 2 | /* | |
| 3 | * | |
| 4 | * UNIX debugger | |
| 5 | * | |
| 6 | */ | |
| 7 | ||
| 8 | #include "defs.h" | |
| 9 | SCCSID (@(#)format.c 2.4); | |
| 10 | ||
| 11 | ||
| 12 | MSG BADMOD; | |
| 13 | MSG NOFORK; | |
| 14 | MSG ADWRAP; | |
| 15 | ||
| 16 | SYMTAB symbol; | |
| 17 | ||
| 18 | INT mkfault; | |
| 19 | CHAR *lp; | |
| 20 | L_INT maxoff; | |
| 21 | ADDR sigint; | |
| 22 | ADDR sigqit; | |
| 23 | STRING errflg; | |
| 24 | CHAR lastc,peekc; | |
| 25 | L_INT dot; | |
| 26 | INT dotinc; | |
| 27 | L_INT expv; | |
| 28 | L_INT var[]; | |
| 29 | ||
| 30 | ||
| 31 | STRING fphack; | |
| 32 | rdfp() | |
| 33 | { | |
| 34 | return(lastc= *fphack++); | |
| 35 | } | |
| 36 | ||
| 37 | scanform(icount,ifp,itype,ptype) | |
| 38 | L_INT icount; | |
| 39 | STRING ifp; | |
| 40 | { | |
| 41 | STRING fp; | |
| 42 | CHAR modifier; | |
| 43 | INT fcount, init=1; | |
| 44 | L_INT savdot; | |
| 45 | BOOL exact; | |
| 46 | ||
| 47 | WHILE icount | |
| 48 | DO fp=ifp; | |
| 49 | savdot=dot; init=0; | |
| 50 | ||
| 51 | IF init==0 ANDF (exact=(findsym(dot,ptype)==0)) ANDF maxoff | |
| 52 | THEN printf("\n%.8s:%16t",symbol.symc); | |
| 53 | FI | |
| 54 | ||
| 55 | /*now loop over format*/ | |
| 56 | WHILE *fp ANDF errflg==0 | |
| 57 | DO IF (fphack=fp, getnum(rdfp)) | |
| 58 | THEN fcount=expv; fp= --fphack; peekc=0; | |
| 59 | ELSE fcount=1; | |
| 60 | FI | |
| 61 | ||
| 62 | IF *fp==0 THEN break; FI | |
| 63 | IF exact ANDF dot==savdot ANDF itype==ISP ANDF symbol.symc[0]=='_' ANDF *fp=='i' | |
| 64 | THEN exform(1,"x",itype,ptype); fp++; printc(EOR); /* entry mask */ | |
| 65 | ELSE fp=exform(fcount,fp,itype,ptype); | |
| 66 | FI | |
| 67 | OD | |
| 68 | dotinc=dot-savdot; | |
| 69 | dot=savdot; | |
| 70 | ||
| 71 | IF errflg | |
| 72 | THEN IF icount<0 | |
| 73 | THEN errflg=0; break; | |
| 74 | ELSE error(errflg); | |
| 75 | FI | |
| 76 | FI | |
| 77 | IF --icount | |
| 78 | THEN dot=inkdot(dotinc); | |
| 79 | FI | |
| 80 | IF mkfault THEN error(0); FI | |
| 81 | OD | |
| 82 | } | |
| 83 | ||
| 84 | STRING | |
| 85 | exform(fcount,ifp,itype,ptype) | |
| 86 | INT fcount; | |
| 87 | STRING ifp; | |
| 88 | { | |
| 89 | /* execute single format item `fcount' times | |
| 90 | * sets `dotinc' and moves `dot' | |
| 91 | * returns address of next format item | |
| 92 | */ | |
| 93 | POS w; | |
| 94 | L_INT savdot, wx; | |
| 95 | STRING fp; | |
| 96 | CHAR c, modifier, longpr; | |
| 97 | L_REAL fw; | |
| 98 | struct{ | |
| 99 | L_INT sa; | |
| 100 | INT sb,sc; | |
| 101 | }; | |
| 102 | ||
| 103 | WHILE fcount>0 | |
| 104 | DO fp = ifp; c = *fp; | |
| 105 | longpr=(c>='A')&(c<='Z')|(c=='f')|(c=='4'); | |
| 106 | IF itype==NSP ORF *fp=='a' | |
| 107 | THEN wx=dot; w=dot; | |
| 108 | ELSE w=get(dot,itype); | |
| 109 | IF longpr | |
| 110 | THEN wx=itol(get(inkdot(2),itype),w); | |
| 111 | ELSE wx=w; | |
| 112 | FI | |
| 113 | FI | |
| 114 | IF c=='F' | |
| 115 | THEN fw.sb=get(inkdot(4),itype); | |
| 116 | fw.sc=get(inkdot(6),itype); | |
| 117 | FI | |
| 118 | IF errflg THEN return(fp); FI | |
| 119 | IF mkfault THEN error(0); FI | |
| 120 | var[0]=wx; | |
| 121 | modifier = *fp++; | |
| 122 | dotinc=(longpr?4:2);; | |
| 123 | ||
| 124 | IF charpos()==0 ANDF modifier!='a' THEN printf("%16m"); FI | |
| 125 | ||
| 126 | switch(modifier) { | |
| 127 | ||
| 128 | case SP: case TB: | |
| 129 | break; | |
| 130 | ||
| 131 | case 't': case 'T': | |
| 132 | printf("%T",fcount); return(fp); | |
| 133 | ||
| 134 | case 'r': case 'R': | |
| 135 | printf("%M",fcount); return(fp); | |
| 136 | ||
| 137 | case 'a': | |
| 138 | psymoff(dot,ptype,":%16t"); dotinc=0; break; | |
| 139 | ||
| 140 | case 'p': | |
| 141 | psymoff(var[0],ptype,"%16t"); break; | |
| 142 | ||
| 143 | case 'u': | |
| 144 | printf("%-8u",w); break; | |
| 145 | ||
| 146 | case 'U': | |
| 147 | printf("%-16U",wx); break; | |
| 148 | ||
| 149 | case 'c': case 'C': | |
| 150 | IF modifier=='C' | |
| 151 | THEN printesc(w&LOBYTE); | |
| 152 | ELSE printc(w&LOBYTE); | |
| 153 | FI | |
| 154 | dotinc=1; break; | |
| 155 | ||
| 156 | case 'b': case 'B': | |
| 157 | printf("%-8o", w&LOBYTE); dotinc=1; break; | |
| 158 | ||
| 159 | case '1': | |
| 160 | printf("%-8r", w&LOBYTE); dotinc=1; break; | |
| 161 | ||
| 162 | case '2': | |
| 163 | case 'w': | |
| 164 | printf("%-8r", w); break; | |
| 165 | ||
| 166 | case '4': | |
| 167 | case 'W': | |
| 168 | printf("%-16R", wx); break; | |
| 169 | ||
| 170 | case 's': case 'S': | |
| 171 | savdot=dot; dotinc=1; | |
| 172 | WHILE (c=get(dot,itype)&LOBYTE) ANDF errflg==0 | |
| 173 | DO dot=inkdot(1); | |
| 174 | IF modifier == 'S' | |
| 175 | THEN printesc(c); | |
| 176 | ELSE printc(c); | |
| 177 | FI | |
| 178 | endline(); | |
| 179 | OD | |
| 180 | dotinc=dot-savdot+1; dot=savdot; break; | |
| 181 | ||
| 182 | case 'x': | |
| 183 | printf("%-8x",w); break; | |
| 184 | ||
| 185 | case 'X': | |
| 186 | printf("%-16X", wx); break; | |
| 187 | ||
| 188 | case 'Y': | |
| 189 | printf("%-24Y", wx); break; | |
| 190 | ||
| 191 | case 'q': | |
| 192 | printf("%-8q", w); break; | |
| 193 | ||
| 194 | case 'Q': | |
| 195 | printf("%-16Q", wx); break; | |
| 196 | ||
| 197 | case 'o': | |
| 198 | printf("%-8o", w); break; | |
| 199 | ||
| 200 | case 'O': | |
| 201 | printf("%-16O", wx); break; | |
| 202 | ||
| 203 | case 'i': | |
| 204 | printins(0,itype,w); printc(EOR); break; | |
| 205 | ||
| 206 | case 'd': | |
| 207 | printf("%-8d", w); break; | |
| 208 | ||
| 209 | case 'D': | |
| 210 | printf("%-16D", wx); break; | |
| 211 | ||
| 212 | case 'f': | |
| 213 | fw = 0; | |
| 214 | fw.sa = wx; | |
| 215 | printf("%-16.9f", fw); | |
| 216 | dotinc=4; break; | |
| 217 | ||
| 218 | case 'F': | |
| 219 | fw.sa = wx; | |
| 220 | printf("%-32.18F", fw); | |
| 221 | dotinc=8; break; | |
| 222 | ||
| 223 | case 'n': case 'N': | |
| 224 | printc('\n'); dotinc=0; break; | |
| 225 | ||
| 226 | case '"': | |
| 227 | dotinc=0; | |
| 228 | WHILE *fp != '"' ANDF *fp | |
| 229 | DO printc(*fp++); OD | |
| 230 | IF *fp THEN fp++; FI | |
| 231 | break; | |
| 232 | ||
| 233 | case '^': | |
| 234 | dot=inkdot(-dotinc*fcount); return(fp); | |
| 235 | ||
| 236 | case '+': | |
| 237 | dot=inkdot(fcount); return(fp); | |
| 238 | ||
| 239 | case '-': | |
| 240 | dot=inkdot(-fcount); return(fp); | |
| 241 | ||
| 242 | default: error(BADMOD); | |
| 243 | } | |
| 244 | IF itype!=NSP | |
| 245 | THEN dot=inkdot(dotinc); | |
| 246 | FI | |
| 247 | fcount--; endline(); | |
| 248 | OD | |
| 249 | ||
| 250 | return(fp); | |
| 251 | } | |
| 252 | ||
| 253 | shell() | |
| 254 | { | |
| 255 | #ifndef EDDT | |
| 256 | INT rc, status, unixpid; | |
| 257 | STRING argp = lp; | |
| 258 | STRING getenv(), shell = getenv("SHELL"); | |
| 259 | #ifdef VFORK | |
| 260 | char oldstlp; | |
| 261 | #endif | |
| 262 | ||
| 263 | if (shell == 0) | |
| 264 | shell = "/bin/sh"; | |
| 265 | WHILE lastc!=EOR DO rdc(); OD | |
| 266 | #ifndef VFORK | |
| 267 | IF (unixpid=fork())==0 | |
| 268 | #else | |
| 269 | oldstlp = *lp; | |
| 270 | IF (unixpid=vfork())==0 | |
| 271 | #endif | |
| 272 | THEN signal(SIGINT,sigint); signal(SIGQUIT,sigqit); | |
| 273 | *lp=0; execl(shell, "sh", "-c", argp, 0); | |
| 274 | _exit(16); | |
| 275 | #ifndef VFORK | |
| 276 | ELIF unixpid == -1 | |
| 277 | #else | |
| 278 | ELIF *lp = oldstlp, unixpid == -1 | |
| 279 | #endif | |
| 280 | THEN error(NOFORK); | |
| 281 | ELSE signal(SIGINT,1); | |
| 282 | WHILE (rc = wait(&status)) != unixpid ANDF rc != -1 DONE | |
| 283 | signal(SIGINT,sigint); | |
| 284 | prints("!"); lp--; | |
| 285 | FI | |
| 286 | #endif | |
| 287 | } | |
| 288 | ||
| 289 | ||
| 290 | printesc(c) | |
| 291 | { | |
| 292 | c &= STRIP; | |
| 293 | IF c<SP ORF c>'~' ORF c=='@' | |
| 294 | THEN printf("@%c",(c=='@' ? '@' : c^0140)); | |
| 295 | ELSE printc(c); | |
| 296 | FI | |
| 297 | } | |
| 298 | ||
| 299 | L_INT inkdot(incr) | |
| 300 | { | |
| 301 | L_INT newdot; | |
| 302 | ||
| 303 | newdot=dot+incr; | |
| 304 | IF (dot NEQ newdot) >> 24 THEN error(ADWRAP); FI | |
| 305 | return(newdot); | |
| 306 | } |