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2fa0b342 DHW |
1 | %{ |
2 | /* Copyright (C) 1991 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GLD, the Gnu Linker. | |
5 | ||
6 | GLD is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GLD is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GLD; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* | |
21 | * $Id$ | |
22 | * | |
23 | * $Log$ | |
24 | * Revision 1.1 1991/03/21 21:28:50 gumby | |
25 | * Initial revision | |
26 | * | |
27 | * Revision 1.3 1991/03/16 22:27:24 rich | |
28 | * fish | |
29 | * | |
30 | * Revision 1.2 1991/03/15 18:45:55 rich | |
31 | * foo | |
32 | * | |
33 | * Revision 1.1 1991/03/13 00:48:27 chrisb | |
34 | * Initial revision | |
35 | * | |
36 | * Revision 1.6 1991/03/10 09:31:32 rich | |
37 | * Modified Files: | |
38 | * Makefile config.h ld-emul.c ld-emul.h ld-gld.c ld-gld960.c | |
39 | * ld-lnk960.c ld.h lddigest.c ldexp.c ldexp.h ldfile.c ldfile.h | |
40 | * ldgram.y ldinfo.h ldlang.c ldlang.h ldlex.h ldlex.l ldmain.c | |
41 | * ldmain.h ldmisc.c ldmisc.h ldsym.c ldsym.h ldversion.c | |
42 | * ldversion.h ldwarn.h ldwrite.c ldwrite.h y.tab.h | |
43 | * | |
44 | * As of this round of changes, ld now builds on all hosts of (Intel960) | |
45 | * interest and copy passes my copy test on big endian hosts again. | |
46 | * | |
47 | * Revision 1.5 1991/03/09 03:25:49 sac | |
48 | * Can now parse the -Ur flag | |
49 | * | |
50 | * Revision 1.4 1991/03/06 02:26:04 sac | |
51 | * Added support for constructor sections. | |
52 | * Remove parsing ambiguity. | |
53 | * Lint | |
54 | * | |
55 | * Revision 1.3 1991/02/22 17:15:14 sac | |
56 | * Added RCS keywords and copyrights | |
57 | * | |
58 | */ | |
59 | ||
60 | ||
61 | ||
62 | /*SUPPRESS 529*/ | |
63 | /*SUPPRESS 26*/ | |
64 | /*SUPPRESS 29*/ | |
65 | #define LEXDEBUG | |
66 | #include "sysdep.h" | |
67 | #include "bfd.h" | |
68 | ||
69 | #include <ctype.h> | |
70 | #include "ldlex.h" | |
71 | ||
72 | #include "ld.h" | |
73 | #include "ldexp.h" | |
74 | #include "ldgram.tab.h" | |
75 | #include "ldmisc.h" | |
76 | ||
77 | #undef input | |
78 | #undef unput | |
79 | #define input lex_input | |
80 | #define unput lex_unput | |
81 | int debug; | |
82 | extern boolean ldgram_want_filename; | |
83 | extern boolean ldgram_mustbe_filename; | |
84 | extern boolean ldgram_mustbe_symbolname; | |
85 | static char *command_line; | |
86 | ||
87 | extern int fgetc(); | |
88 | extern int yyparse(); | |
89 | ||
90 | typedef struct { | |
91 | char *name; | |
92 | int value; | |
93 | } keyword_type; | |
94 | #define RTOKEN(x) { yylval.token = x; return x; } | |
95 | keyword_type keywords[] = | |
96 | { | |
97 | "MEMORY",MEMORY, | |
98 | "ORIGIN",ORIGIN, | |
99 | "BLOCK",BLOCK, | |
100 | "LENGTH",LENGTH, | |
101 | "ALIGN",ALIGN_K, | |
102 | "SUBSECTION_ALIGN",SUBSECTION_ALIGN, | |
103 | "ADDR",ADDR, | |
104 | "ENTRY",ENTRY, | |
105 | "NEXT",NEXT, | |
106 | "MAP",MAP, | |
107 | "SIZEOF",SIZEOF, | |
108 | "TARGET",TARGET_K, | |
109 | "SEARCH_DIR",SEARCH_DIR, | |
110 | "OUTPUT",OUTPUT, | |
111 | "INPUT",INPUT, | |
112 | "DEFINED",DEFINED, | |
113 | "CREATE_OBJECT_SYMBOLS",CREATE_OBJECT_SYMBOLS, | |
114 | "SECTIONS",SECTIONS, | |
115 | "FILL",FILL, | |
116 | "STARTUP",STARTUP, | |
117 | "HLL",HLL, | |
118 | "SYSLIB",SYSLIB, | |
119 | "FLOAT",FLOAT, | |
120 | "LONG", LONG, | |
121 | "SHORT", SHORT, | |
122 | "BYTE", BYTE, | |
123 | "NOFLOAT",NOFLOAT, | |
124 | "o",ORIGIN, | |
125 | "org",ORIGIN, | |
126 | "l", LENGTH, | |
127 | "len", LENGTH, | |
128 | 0,0}; | |
129 | unsigned int lineno; | |
130 | extern boolean hex_mode; | |
131 | FILE *ldlex_input_stack; | |
132 | static unsigned int have_pushback; | |
133 | #define NPUSHBACK 10 | |
134 | int pushback[NPUSHBACK]; | |
135 | int thischar; | |
136 | extern char *ldfile_input_filename; | |
137 | ||
138 | int | |
139 | lex_input() | |
140 | { | |
141 | /* | |
142 | When we know that the next token must be a filename we force the | |
143 | input routine to return a '#' character, which will cause the special | |
144 | filname regexp to match the following chars even if they don't look | |
145 | much like a filename to any sane person. | |
146 | */ | |
147 | if (ldgram_mustbe_filename) { | |
148 | ldgram_mustbe_filename = false; | |
149 | return '#'; | |
150 | } | |
151 | ||
152 | if (have_pushback > 0) | |
153 | { | |
154 | have_pushback --; | |
155 | return thischar = pushback[have_pushback]; | |
156 | } | |
157 | if (ldlex_input_stack) { | |
158 | thischar = fgetc(ldlex_input_stack); | |
159 | ||
160 | if (thischar == EOF) { | |
161 | fclose(ldlex_input_stack); | |
162 | ldlex_input_stack = (FILE *)NULL; | |
163 | ldfile_input_filename = (char *)NULL; | |
164 | thischar = lex_input(); | |
165 | ||
166 | } | |
167 | } | |
168 | else if (command_line && *command_line) { | |
169 | thischar = *(command_line++); | |
170 | } | |
171 | else thischar = 0; | |
172 | if(thischar == '\t') thischar = ' '; | |
173 | return thischar ; | |
174 | } | |
175 | ||
176 | void | |
177 | lex_unput(c) | |
178 | int c; | |
179 | { | |
180 | if (have_pushback > NPUSHBACK) { | |
181 | info("%F%P Too many pushbacks\n"); | |
182 | } | |
183 | ||
184 | pushback[have_pushback] = c; | |
185 | have_pushback ++; | |
186 | } | |
187 | ||
188 | ||
189 | int | |
190 | yywrap() | |
191 | { return 1; } | |
192 | /*VARARGS*/ | |
193 | ||
194 | void | |
195 | allprint(x) | |
196 | int x; | |
197 | { | |
198 | fprintf(yyout,"%d",x); | |
199 | } | |
200 | ||
201 | void | |
202 | sprint(x) | |
203 | char *x; | |
204 | { | |
205 | fprintf(yyout,"%s",x); | |
206 | } | |
207 | ||
208 | int thischar; | |
209 | ||
210 | void parse_line(arg) | |
211 | char *arg; | |
212 | { | |
213 | command_line = arg; | |
214 | have_pushback = 0; | |
215 | yyparse(); | |
216 | } | |
217 | ||
218 | ||
219 | ||
220 | void | |
221 | parse_args(ac, av) | |
222 | int ac; | |
223 | char **av; | |
224 | { | |
225 | char *p; | |
226 | int i; | |
227 | size_t size = 0; | |
228 | char *dst; | |
229 | debug = 1; | |
230 | for (i= 1; i < ac; i++) { | |
231 | size += strlen(av[i]) + 2; | |
232 | } | |
233 | dst = p = (char *)ldmalloc(size + 2); | |
234 | /* Put a space arount each option */ | |
235 | ||
236 | ||
237 | for (i =1; i < ac; i++) { | |
238 | ||
239 | unsigned int s = strlen(av[i]); | |
240 | *dst++ = ' '; | |
241 | memcpy(dst, av[i], s); | |
242 | dst[s] = ' '; | |
243 | dst += s + 1; | |
244 | } | |
245 | *dst = 0; | |
246 | parse_line(p); | |
247 | ||
248 | free(p); | |
249 | ||
250 | ||
251 | } | |
252 | ||
253 | long number(text, base) | |
254 | char *text; | |
255 | int base; | |
256 | { | |
257 | unsigned long l = 0; | |
258 | char *p; | |
259 | for (p = text; *p != 0; p++) { | |
260 | if (*p == 'K') { | |
261 | l =l * 1024; | |
262 | } | |
263 | else if(*p== 'M') { | |
264 | l =l * 1024 * 1024; | |
265 | } | |
266 | else { | |
267 | l =l * base; | |
268 | if (isdigit(*p)) { | |
269 | l += *p - '0'; | |
270 | } | |
271 | else if (islower(*p)) { | |
272 | l += *p - 'a' + 10; | |
273 | } | |
274 | else { | |
275 | l += *p - 'A' + 10; | |
276 | } | |
277 | } | |
278 | } | |
279 | return l; | |
280 | } | |
281 | %} | |
282 | ||
283 | %a 4000 | |
284 | %o 5000 | |
285 | FILENAMECHAR [a-zA-Z0-9\/\.\-\_\+] | |
286 | FILENAME {FILENAMECHAR}+ | |
287 | ||
288 | ||
289 | WHITE [ \t]+ | |
290 | ||
291 | %% | |
292 | "\n" { lineno++; } | |
293 | ||
294 | ||
295 | "\ -defsym" { return OPTION_defsym; } | |
296 | "\ -noinhibit_exec" { return OPTION_noinhibit_exec; } | |
297 | "\ -format" { return OPTION_format; } | |
298 | "\ -n" { return OPTION_n; } | |
299 | "\ -r" { return OPTION_r; } | |
300 | "\ -Ur" { return OPTION_Ur; } | |
301 | "\ -o" { return OPTION_o; } | |
302 | "\ -g" { return OPTION_g; } | |
303 | "\ -e" { return OPTION_e; } | |
304 | "\ -b" { return OPTION_b; } | |
305 | "\ -dc" { return OPTION_dc; } | |
306 | "\ -dp" { return OPTION_dp; } | |
307 | "\ -d" { return OPTION_d; } | |
308 | "\ -v" { return OPTION_v; } | |
309 | "\ -M" { return OPTION_M; } | |
310 | "\ -t" { return OPTION_t; } | |
311 | "\ -X" { return OPTION_X; } | |
312 | "\ -x" { return OPTION_x; } | |
313 | "\ -c" { return OPTION_c; } | |
314 | "\ -s" { return OPTION_s; } | |
315 | "\ -S" { return OPTION_S; } | |
316 | "\ -l"{FILENAME} { | |
317 | yylval.name = buystring(yytext+3); | |
318 | return OPTION_l; | |
319 | } | |
320 | ||
321 | "\ -L"{FILENAME} { | |
322 | yylval.name = buystring(yytext+3); | |
323 | return OPTION_L; | |
324 | } | |
325 | "\ -Ttext" { | |
326 | yylval.name = ".text"; | |
327 | return OPTION_Texp; | |
328 | } | |
329 | "\ -Tdata" { | |
330 | yylval.name = ".data"; | |
331 | return OPTION_Texp; | |
332 | } | |
333 | "\ -Tbss" { | |
334 | yylval.name = ".bss"; | |
335 | return OPTION_Texp; | |
336 | } | |
337 | ||
338 | "\ -T"{FILENAME} { | |
339 | yylval.name = buystring(yytext+3); | |
340 | return OPTION_Tfile; | |
341 | } | |
342 | "\ -T" { | |
343 | return OPTION_T; | |
344 | } | |
345 | ||
346 | "\ -A"{FILENAME} { | |
347 | yylval.name = buystring(yytext+3); | |
348 | return OPTION_Aarch; | |
349 | } | |
350 | " " { } | |
351 | "<<=" { RTOKEN(LSHIFTEQ);} | |
352 | ">>=" { RTOKEN(RSHIFTEQ);} | |
353 | "||" { RTOKEN(OROR);} | |
354 | "==" { RTOKEN(EQ);} | |
355 | "!=" { RTOKEN(NE);} | |
356 | ">=" { RTOKEN(GE);} | |
357 | "<=" { RTOKEN(LE);} | |
358 | "<<" { RTOKEN(LSHIFT);} | |
359 | ">>" { RTOKEN(RSHIFT);} | |
360 | "+=" { RTOKEN(PLUSEQ);} | |
361 | "-=" { RTOKEN(MINUSEQ);} | |
362 | "*=" { RTOKEN(MULTEQ);} | |
363 | "/=" { RTOKEN(DIVEQ);} | |
364 | "&=" { RTOKEN(ANDEQ);} | |
365 | "|=" { RTOKEN(OREQ);} | |
366 | ||
367 | "&&" { RTOKEN(ANDAND);} | |
368 | ">" { RTOKEN('>');} | |
369 | "," { RTOKEN(',');} | |
370 | "&" { RTOKEN('&');} | |
371 | "|" { RTOKEN('|');} | |
372 | "~" { RTOKEN('~');} | |
373 | "!" { RTOKEN('!');} | |
374 | "?" { RTOKEN('?');} | |
375 | "*" { RTOKEN('*');} | |
376 | "%" { RTOKEN('%');} | |
377 | "<" { RTOKEN('<');} | |
378 | "+" { RTOKEN('+');} | |
379 | ">" { RTOKEN('>');} | |
380 | "}" { RTOKEN('}') ; } | |
381 | "{" { RTOKEN('{'); } | |
382 | ")" { RTOKEN(')');} | |
383 | "(" { RTOKEN('(');} | |
384 | "]" { RTOKEN(']');} | |
385 | "[" { RTOKEN('[');} | |
386 | ":" { RTOKEN(':'); } | |
387 | ";" { RTOKEN(';');} | |
388 | "-" { RTOKEN('-');} | |
389 | "=" { RTOKEN('=');} | |
390 | ||
391 | ||
392 | "/*" { | |
393 | while (1) { | |
394 | int ch; | |
395 | ch = input(); | |
396 | while (ch != '*') { | |
397 | if (ch == '\n') {lineno++; } | |
398 | ch = input(); | |
399 | } | |
400 | ||
401 | ||
402 | ||
403 | if (input() == '/') { | |
404 | break; | |
405 | } | |
406 | unput(yytext[yyleng-1]); | |
407 | } | |
408 | } | |
409 | ||
410 | "\""[^\"]*"\"" { | |
411 | ||
412 | yylval.name = buystring(yytext+1); | |
413 | yylval.name[yyleng-2] = 0; /* Fry final quote */ | |
414 | return NAME; | |
415 | } | |
416 | [0][0-7KM]* { | |
417 | ||
418 | yylval.integer = number(yytext+1, 8); | |
419 | return INT; | |
420 | } | |
421 | ||
422 | [0-9]+[KM]? { | |
423 | if (hex_mode == true) { | |
424 | yylval.integer = number(yytext, 16); | |
425 | } | |
426 | else { | |
427 | yylval.integer = number(yytext, 10); | |
428 | } | |
429 | return INT; | |
430 | } | |
431 | ||
432 | 0[Xx][0-9a-fA-FKM]+ { | |
433 | ||
434 | yylval.integer = number(yytext+2,16); | |
435 | return INT; | |
436 | } | |
437 | ||
438 | "\#"{WHITE}*{FILENAMECHAR}+ { | |
439 | char *p = yytext+1; | |
440 | while(*p ==' ' || *p == '\t') p++; | |
441 | yylval.name = buystring(p); | |
442 | return NAME; | |
443 | } | |
444 | ||
445 | ||
446 | {FILENAMECHAR} { | |
447 | ||
448 | int ch; | |
449 | keyword_type *k; | |
450 | if (yytext[0] == '/' && ldgram_mustbe_symbolname) | |
451 | { RTOKEN('/');} | |
452 | ch = input(); | |
453 | while (true) { | |
454 | if (isalpha(ch) || isdigit(ch) || ch == '.' || ch == '_') { | |
455 | yytext[yyleng++] = ch; | |
456 | } | |
457 | else if (ch == '-' && ldgram_want_filename == true) { | |
458 | yytext[yyleng++] = ch; | |
459 | } | |
460 | else if (ch == '+' && ldgram_want_filename == true) { | |
461 | yytext[yyleng++] = ch; | |
462 | } | |
463 | ||
464 | else if (ch == '/' && ldgram_want_filename == true) { | |
465 | yytext[yyleng++] = ch; | |
466 | } | |
467 | ||
468 | else break; | |
469 | ch = input(); | |
470 | } | |
471 | ||
472 | yytext[yyleng] = 0; | |
473 | unput(ch); | |
474 | ||
475 | for(k = keywords; k ->name != (char *)NULL; k++) { | |
476 | ||
477 | if (strcmp(k->name, yytext)==0) { | |
478 | yylval.token = k->value; | |
479 | return k->value; | |
480 | } | |
481 | } | |
482 | yylval.name = buystring(yytext); | |
483 | return NAME; | |
484 | } | |
485 | ||
486 | ||
487 | ||
488 | ||
489 | ||
490 | %% |