| 1 | #include "head.h" |
| 2 | #include <a.out.h> |
| 3 | #include "cdefs.h" |
| 4 | #include <stdio.h> |
| 5 | struct user u; |
| 6 | |
| 7 | char * |
| 8 | readline(f) |
| 9 | FILE *f; { |
| 10 | static char buff[128]; |
| 11 | |
| 12 | register char *p; |
| 13 | register int i; |
| 14 | |
| 15 | p = buff; |
| 16 | do { |
| 17 | if ((i = getc(f)) == EOF) { |
| 18 | *p++ = '\004'; |
| 19 | *p = '\n'; |
| 20 | } |
| 21 | else *p = i; |
| 22 | } while (*p++ != '\n'); |
| 23 | |
| 24 | return(buff); |
| 25 | } |
| 26 | |
| 27 | char * |
| 28 | cpname(p, q) |
| 29 | char *p, *q; { |
| 30 | while(varchar(*q) || number(*q)) |
| 31 | *p++ = *q++; |
| 32 | *p = '\0'; |
| 33 | return(q); |
| 34 | } |
| 35 | |
| 36 | char * |
| 37 | cpall(p, q) |
| 38 | char *p, *q; { |
| 39 | while (*q != '\n') |
| 40 | *p++ = *q++; |
| 41 | *p = '\0'; |
| 42 | return(q); |
| 43 | } |
| 44 | |
| 45 | eqany(c, s) |
| 46 | char c, *s; { |
| 47 | while(*s != '\0') |
| 48 | if (c == *s++) return(1); |
| 49 | return(0); |
| 50 | } |
| 51 | |
| 52 | error(s) |
| 53 | char *s; { |
| 54 | printf("%s\n", s); |
| 55 | } |
| 56 | |
| 57 | char * |
| 58 | cpstr(p,q) |
| 59 | char *p, *q; { |
| 60 | do { |
| 61 | *p++ = *q++; |
| 62 | } while (*q != '\0'); |
| 63 | *p = '\0'; |
| 64 | } |
| 65 | L_INT |
| 66 | round(a,b) |
| 67 | REG L_INT a, b; |
| 68 | { |
| 69 | REG L_INT w; |
| 70 | w = (a/b)*b; |
| 71 | IF a!=w THEN w += b; FI |
| 72 | return(w); |
| 73 | } |
| 74 | |
| 75 | /* error handling */ |
| 76 | |
| 77 | chkerr() |
| 78 | { |
| 79 | IF errflg ORF mkfault |
| 80 | THEN error(errflg); |
| 81 | longjmp(env, 0); |
| 82 | FI |
| 83 | } |
| 84 | |
| 85 | eqstr(s1, s2) |
| 86 | REG STRING s1, s2; |
| 87 | { |
| 88 | REG STRING es1; |
| 89 | if (s2 == (STRING) -1) return(0); |
| 90 | es1 = s1+8; |
| 91 | WHILE *s1++ == *s2 |
| 92 | DO IF *s2++ == 0 ORF s1>=es1 |
| 93 | THEN return(1); |
| 94 | FI |
| 95 | OD |
| 96 | return(0); |
| 97 | } |
| 98 | |
| 99 | longseek(f, a) |
| 100 | L_INT a; |
| 101 | { |
| 102 | return(lseek(f,(long) a,0) != -1); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | /* descriptor format to length */ |
| 107 | dtol(d) |
| 108 | char d; { |
| 109 | switch(d) { |
| 110 | |
| 111 | case 'a': |
| 112 | case 's': |
| 113 | return(0); |
| 114 | |
| 115 | case 'b': |
| 116 | case 'c': |
| 117 | return(1); |
| 118 | |
| 119 | case 'h': |
| 120 | return(2); |
| 121 | |
| 122 | case 'l': |
| 123 | case 'f': |
| 124 | return(4); |
| 125 | |
| 126 | case 'g': |
| 127 | return(8); |
| 128 | |
| 129 | default: |
| 130 | return(WORDSIZE); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /* |
| 135 | * checks equality of pattern pat with str, |
| 136 | * assuming str is tructaed at length 8 |
| 137 | */ |
| 138 | eqpat(pat, str) |
| 139 | char *pat, *str; { |
| 140 | return(eqpatr(pat, str, 0)); |
| 141 | } |
| 142 | |
| 143 | eqpatr(pat, str, cnt) |
| 144 | char *pat, *str; { |
| 145 | register int i; |
| 146 | register char p, s; |
| 147 | |
| 148 | p = pat[0]; |
| 149 | s = str[0]; |
| 150 | if (cnt == 8) return(1); |
| 151 | if (p == '?') { |
| 152 | if (s == '\0') return(0); |
| 153 | return(eqpatr(pat+1, str+1, cnt+1)); |
| 154 | } |
| 155 | if (p == '*') { |
| 156 | if (pat[1] == '\0') return(1); |
| 157 | for(i=1; i<8-cnt; i++) { |
| 158 | if (eqpatr(pat+1, str+i, cnt+i)) return(1); |
| 159 | if (str[i] == '\0') return(0); |
| 160 | } |
| 161 | return(0); |
| 162 | } |
| 163 | if ((eqany(p, ".[->") || p == '\0') && s == '\0') return(1); |
| 164 | if (p != s) return(0); |
| 165 | return(eqpatr(pat+1, str+1, cnt+1)); |
| 166 | } |
| 167 | |
| 168 | /* gets indirect address for pointers and subscripts */ |
| 169 | getindir(class, addr, type) |
| 170 | ADDR addr; { |
| 171 | if (ISARY(type)) return(addr); |
| 172 | if (class == N_RSYM) |
| 173 | return(*(ADDR *)(((ADDR) &u) + R0 + (WORDSIZE)*addr)); |
| 174 | return(getval(addr, 'd')); |
| 175 | } |
| 176 | |
| 177 | long |
| 178 | readint(p) |
| 179 | char **p; { |
| 180 | int sign; |
| 181 | |
| 182 | if (**p == '-') { |
| 183 | sign = -1; |
| 184 | (*p)++; |
| 185 | } else { |
| 186 | sign = 1; |
| 187 | } |
| 188 | if (**p == '0') { |
| 189 | (*p)++; |
| 190 | if (**p == 'x' || **p == 'X') { |
| 191 | (*p)++; |
| 192 | return(sign * rint(p, 16, hexdigit, hexconv)); |
| 193 | } |
| 194 | else return(sign * rint(p, 8, octdigit, octconv)); |
| 195 | } |
| 196 | else return(sign * rint(p, 10, decdigit, decconv)); |
| 197 | } |
| 198 | |
| 199 | long |
| 200 | rint(p, base, digit, conv) |
| 201 | char **p; |
| 202 | int (*digit)(), (*conv)(); { |
| 203 | long value; |
| 204 | |
| 205 | value = 0; |
| 206 | while ((*digit)(**p)) value = base*value + (*conv)(*(*p)++); |
| 207 | return(value); |
| 208 | } |
| 209 | |
| 210 | octdigit(c) |
| 211 | char c; { |
| 212 | return(c >= '0' && c <= '7'); |
| 213 | } |
| 214 | |
| 215 | octconv(c) |
| 216 | char c; { |
| 217 | return(c - '0'); |
| 218 | } |
| 219 | |
| 220 | decdigit(c) |
| 221 | char c; { |
| 222 | return(c >= '0' && c <= '9'); |
| 223 | } |
| 224 | |
| 225 | decconv(c) |
| 226 | char c; { |
| 227 | return(c - '0'); |
| 228 | } |
| 229 | |
| 230 | hexdigit(c) |
| 231 | char c; { |
| 232 | return((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || |
| 233 | (c >= 'A' && c <= 'F')); |
| 234 | } |
| 235 | |
| 236 | hexconv(c) |
| 237 | char c; { |
| 238 | if (c >= '0' && c <= '9') return(c - '0'); |
| 239 | if (c >= 'a' && c <= 'f') return(c - 'a' + 10); |
| 240 | if (c >= 'A' && c <= 'F') return(c - 'A' + 10); |
| 241 | error("hex conversion error"); |
| 242 | return(0); |
| 243 | } |
| 244 | |
| 245 | /* decodes number, character or variable */ |
| 246 | long |
| 247 | argvalue(p) |
| 248 | char *p; { |
| 249 | register char ch; |
| 250 | register long value; |
| 251 | register ADDR j; |
| 252 | char var[30]; |
| 253 | |
| 254 | ch = *p; |
| 255 | if (ch == '\'') { |
| 256 | value = *(p+1); |
| 257 | } else if ((ch >= '0' && ch <= '9') || ch == '-') { |
| 258 | value = readint(&p); |
| 259 | } else if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || |
| 260 | ch == '_') { |
| 261 | cpname(var, p); |
| 262 | j = varaddr(curproc()->pname, var); |
| 263 | if (j == -1) { |
| 264 | printf("Unknown variable: %s\n", argsp); |
| 265 | return(-1); |
| 266 | } |
| 267 | value = getval(j, typetodesc(sl_type, 0)[0]); |
| 268 | do { |
| 269 | p++; |
| 270 | } while (varchar(*p) || number(*p)); |
| 271 | } |
| 272 | return(value); |
| 273 | } |