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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 | * $Id$ | |
7ca04d28 | 22 | |
2fa0b342 DHW |
23 | * |
24 | */ | |
25 | ||
26 | ||
27 | ||
28 | /*SUPPRESS 529*/ | |
29 | /*SUPPRESS 26*/ | |
30 | /*SUPPRESS 29*/ | |
31 | #define LEXDEBUG | |
32 | #include "sysdep.h" | |
33 | #include "bfd.h" | |
34 | ||
35 | #include <ctype.h> | |
36 | #include "ldlex.h" | |
37 | ||
38 | #include "ld.h" | |
39 | #include "ldexp.h" | |
40 | #include "ldgram.tab.h" | |
41 | #include "ldmisc.h" | |
42 | ||
43 | #undef input | |
44 | #undef unput | |
45 | #define input lex_input | |
46 | #define unput lex_unput | |
47 | int debug; | |
7ca04d28 SC |
48 | |
49 | extern boolean ldgram_in_expression; | |
50 | extern boolean ldgram_in_defsym; | |
51 | ||
2fa0b342 DHW |
52 | static char *command_line; |
53 | ||
54 | extern int fgetc(); | |
55 | extern int yyparse(); | |
56 | ||
57 | typedef struct { | |
58 | char *name; | |
59 | int value; | |
60 | } keyword_type; | |
61 | #define RTOKEN(x) { yylval.token = x; return x; } | |
62 | keyword_type keywords[] = | |
63 | { | |
64 | "MEMORY",MEMORY, | |
65 | "ORIGIN",ORIGIN, | |
66 | "BLOCK",BLOCK, | |
67 | "LENGTH",LENGTH, | |
68 | "ALIGN",ALIGN_K, | |
69 | "SUBSECTION_ALIGN",SUBSECTION_ALIGN, | |
70 | "ADDR",ADDR, | |
71 | "ENTRY",ENTRY, | |
72 | "NEXT",NEXT, | |
73 | "MAP",MAP, | |
74 | "SIZEOF",SIZEOF, | |
75 | "TARGET",TARGET_K, | |
76 | "SEARCH_DIR",SEARCH_DIR, | |
77 | "OUTPUT",OUTPUT, | |
78 | "INPUT",INPUT, | |
79 | "DEFINED",DEFINED, | |
80 | "CREATE_OBJECT_SYMBOLS",CREATE_OBJECT_SYMBOLS, | |
81 | "SECTIONS",SECTIONS, | |
82 | "FILL",FILL, | |
83 | "STARTUP",STARTUP, | |
84 | "HLL",HLL, | |
85 | "SYSLIB",SYSLIB, | |
86 | "FLOAT",FLOAT, | |
87 | "LONG", LONG, | |
88 | "SHORT", SHORT, | |
89 | "BYTE", BYTE, | |
90 | "NOFLOAT",NOFLOAT, | |
91 | "o",ORIGIN, | |
92 | "org",ORIGIN, | |
93 | "l", LENGTH, | |
94 | "len", LENGTH, | |
95 | 0,0}; | |
96 | unsigned int lineno; | |
97 | extern boolean hex_mode; | |
98 | FILE *ldlex_input_stack; | |
99 | static unsigned int have_pushback; | |
100 | #define NPUSHBACK 10 | |
101 | int pushback[NPUSHBACK]; | |
102 | int thischar; | |
103 | extern char *ldfile_input_filename; | |
104 | ||
105 | int | |
106 | lex_input() | |
107 | { | |
7ca04d28 | 108 | |
2fa0b342 DHW |
109 | |
110 | if (have_pushback > 0) | |
111 | { | |
112 | have_pushback --; | |
113 | return thischar = pushback[have_pushback]; | |
114 | } | |
115 | if (ldlex_input_stack) { | |
116 | thischar = fgetc(ldlex_input_stack); | |
117 | ||
118 | if (thischar == EOF) { | |
119 | fclose(ldlex_input_stack); | |
120 | ldlex_input_stack = (FILE *)NULL; | |
121 | ldfile_input_filename = (char *)NULL; | |
122 | thischar = lex_input(); | |
123 | ||
124 | } | |
125 | } | |
126 | else if (command_line && *command_line) { | |
127 | thischar = *(command_line++); | |
128 | } | |
129 | else thischar = 0; | |
130 | if(thischar == '\t') thischar = ' '; | |
7ca04d28 | 131 | if (thischar == '\n') { thischar = ' '; lineno++; } |
2fa0b342 DHW |
132 | return thischar ; |
133 | } | |
134 | ||
135 | void | |
136 | lex_unput(c) | |
137 | int c; | |
138 | { | |
139 | if (have_pushback > NPUSHBACK) { | |
140 | info("%F%P Too many pushbacks\n"); | |
141 | } | |
142 | ||
143 | pushback[have_pushback] = c; | |
144 | have_pushback ++; | |
145 | } | |
146 | ||
147 | ||
148 | int | |
149 | yywrap() | |
150 | { return 1; } | |
151 | /*VARARGS*/ | |
152 | ||
153 | void | |
154 | allprint(x) | |
155 | int x; | |
156 | { | |
157 | fprintf(yyout,"%d",x); | |
158 | } | |
159 | ||
160 | void | |
161 | sprint(x) | |
162 | char *x; | |
163 | { | |
164 | fprintf(yyout,"%s",x); | |
165 | } | |
166 | ||
167 | int thischar; | |
168 | ||
169 | void parse_line(arg) | |
170 | char *arg; | |
171 | { | |
172 | command_line = arg; | |
173 | have_pushback = 0; | |
174 | yyparse(); | |
175 | } | |
176 | ||
177 | ||
178 | ||
179 | void | |
180 | parse_args(ac, av) | |
181 | int ac; | |
182 | char **av; | |
183 | { | |
184 | char *p; | |
185 | int i; | |
186 | size_t size = 0; | |
187 | char *dst; | |
188 | debug = 1; | |
189 | for (i= 1; i < ac; i++) { | |
190 | size += strlen(av[i]) + 2; | |
191 | } | |
192 | dst = p = (char *)ldmalloc(size + 2); | |
193 | /* Put a space arount each option */ | |
194 | ||
195 | ||
196 | for (i =1; i < ac; i++) { | |
197 | ||
198 | unsigned int s = strlen(av[i]); | |
199 | *dst++ = ' '; | |
200 | memcpy(dst, av[i], s); | |
201 | dst[s] = ' '; | |
202 | dst += s + 1; | |
203 | } | |
204 | *dst = 0; | |
205 | parse_line(p); | |
206 | ||
207 | free(p); | |
208 | ||
209 | ||
210 | } | |
211 | ||
212 | long number(text, base) | |
213 | char *text; | |
214 | int base; | |
215 | { | |
216 | unsigned long l = 0; | |
217 | char *p; | |
218 | for (p = text; *p != 0; p++) { | |
219 | if (*p == 'K') { | |
220 | l =l * 1024; | |
221 | } | |
222 | else if(*p== 'M') { | |
223 | l =l * 1024 * 1024; | |
224 | } | |
225 | else { | |
226 | l =l * base; | |
227 | if (isdigit(*p)) { | |
228 | l += *p - '0'; | |
229 | } | |
230 | else if (islower(*p)) { | |
231 | l += *p - 'a' + 10; | |
232 | } | |
233 | else { | |
234 | l += *p - 'A' + 10; | |
235 | } | |
236 | } | |
237 | } | |
238 | return l; | |
239 | } | |
240 | %} | |
241 | ||
242 | %a 4000 | |
243 | %o 5000 | |
244 | FILENAMECHAR [a-zA-Z0-9\/\.\-\_\+] | |
245 | FILENAME {FILENAMECHAR}+ | |
246 | ||
247 | ||
248 | WHITE [ \t]+ | |
249 | ||
250 | %% | |
2fa0b342 DHW |
251 | |
252 | ||
253 | "\ -defsym" { return OPTION_defsym; } | |
254 | "\ -noinhibit_exec" { return OPTION_noinhibit_exec; } | |
255 | "\ -format" { return OPTION_format; } | |
256 | "\ -n" { return OPTION_n; } | |
257 | "\ -r" { return OPTION_r; } | |
258 | "\ -Ur" { return OPTION_Ur; } | |
259 | "\ -o" { return OPTION_o; } | |
260 | "\ -g" { return OPTION_g; } | |
261 | "\ -e" { return OPTION_e; } | |
262 | "\ -b" { return OPTION_b; } | |
263 | "\ -dc" { return OPTION_dc; } | |
264 | "\ -dp" { return OPTION_dp; } | |
265 | "\ -d" { return OPTION_d; } | |
266 | "\ -v" { return OPTION_v; } | |
267 | "\ -M" { return OPTION_M; } | |
268 | "\ -t" { return OPTION_t; } | |
269 | "\ -X" { return OPTION_X; } | |
270 | "\ -x" { return OPTION_x; } | |
271 | "\ -c" { return OPTION_c; } | |
272 | "\ -s" { return OPTION_s; } | |
273 | "\ -S" { return OPTION_S; } | |
274 | "\ -l"{FILENAME} { | |
275 | yylval.name = buystring(yytext+3); | |
276 | return OPTION_l; | |
277 | } | |
278 | ||
279 | "\ -L"{FILENAME} { | |
280 | yylval.name = buystring(yytext+3); | |
281 | return OPTION_L; | |
282 | } | |
283 | "\ -Ttext" { | |
284 | yylval.name = ".text"; | |
285 | return OPTION_Texp; | |
286 | } | |
287 | "\ -Tdata" { | |
288 | yylval.name = ".data"; | |
289 | return OPTION_Texp; | |
290 | } | |
291 | "\ -Tbss" { | |
292 | yylval.name = ".bss"; | |
293 | return OPTION_Texp; | |
294 | } | |
295 | ||
296 | "\ -T"{FILENAME} { | |
297 | yylval.name = buystring(yytext+3); | |
298 | return OPTION_Tfile; | |
299 | } | |
300 | "\ -T" { | |
301 | return OPTION_T; | |
302 | } | |
303 | ||
7ca04d28 SC |
304 | "\ -F"{FILENAME} { |
305 | return OPTION_F; | |
306 | } | |
307 | "\ -F" { | |
308 | return OPTION_F; | |
309 | } | |
310 | ||
2fa0b342 DHW |
311 | "\ -A"{FILENAME} { |
312 | yylval.name = buystring(yytext+3); | |
313 | return OPTION_Aarch; | |
314 | } | |
315 | " " { } | |
316 | "<<=" { RTOKEN(LSHIFTEQ);} | |
317 | ">>=" { RTOKEN(RSHIFTEQ);} | |
318 | "||" { RTOKEN(OROR);} | |
319 | "==" { RTOKEN(EQ);} | |
320 | "!=" { RTOKEN(NE);} | |
321 | ">=" { RTOKEN(GE);} | |
322 | "<=" { RTOKEN(LE);} | |
323 | "<<" { RTOKEN(LSHIFT);} | |
324 | ">>" { RTOKEN(RSHIFT);} | |
325 | "+=" { RTOKEN(PLUSEQ);} | |
326 | "-=" { RTOKEN(MINUSEQ);} | |
327 | "*=" { RTOKEN(MULTEQ);} | |
328 | "/=" { RTOKEN(DIVEQ);} | |
329 | "&=" { RTOKEN(ANDEQ);} | |
330 | "|=" { RTOKEN(OREQ);} | |
331 | ||
332 | "&&" { RTOKEN(ANDAND);} | |
333 | ">" { RTOKEN('>');} | |
334 | "," { RTOKEN(',');} | |
335 | "&" { RTOKEN('&');} | |
336 | "|" { RTOKEN('|');} | |
337 | "~" { RTOKEN('~');} | |
338 | "!" { RTOKEN('!');} | |
339 | "?" { RTOKEN('?');} | |
340 | "*" { RTOKEN('*');} | |
341 | "%" { RTOKEN('%');} | |
342 | "<" { RTOKEN('<');} | |
343 | "+" { RTOKEN('+');} | |
344 | ">" { RTOKEN('>');} | |
345 | "}" { RTOKEN('}') ; } | |
346 | "{" { RTOKEN('{'); } | |
347 | ")" { RTOKEN(')');} | |
348 | "(" { RTOKEN('(');} | |
349 | "]" { RTOKEN(']');} | |
350 | "[" { RTOKEN('[');} | |
351 | ":" { RTOKEN(':'); } | |
352 | ";" { RTOKEN(';');} | |
353 | "-" { RTOKEN('-');} | |
354 | "=" { RTOKEN('=');} | |
355 | ||
356 | ||
357 | "/*" { | |
358 | while (1) { | |
359 | int ch; | |
360 | ch = input(); | |
361 | while (ch != '*') { | |
2fa0b342 DHW |
362 | ch = input(); |
363 | } | |
364 | ||
365 | ||
366 | ||
367 | if (input() == '/') { | |
368 | break; | |
369 | } | |
370 | unput(yytext[yyleng-1]); | |
371 | } | |
372 | } | |
373 | ||
374 | "\""[^\"]*"\"" { | |
375 | ||
376 | yylval.name = buystring(yytext+1); | |
377 | yylval.name[yyleng-2] = 0; /* Fry final quote */ | |
378 | return NAME; | |
379 | } | |
380 | [0][0-7KM]* { | |
381 | ||
382 | yylval.integer = number(yytext+1, 8); | |
383 | return INT; | |
384 | } | |
385 | ||
386 | [0-9]+[KM]? { | |
387 | if (hex_mode == true) { | |
388 | yylval.integer = number(yytext, 16); | |
389 | } | |
390 | else { | |
391 | yylval.integer = number(yytext, 10); | |
392 | } | |
393 | return INT; | |
394 | } | |
395 | ||
396 | 0[Xx][0-9a-fA-FKM]+ { | |
397 | ||
398 | yylval.integer = number(yytext+2,16); | |
399 | return INT; | |
400 | } | |
401 | ||
402 | "\#"{WHITE}*{FILENAMECHAR}+ { | |
403 | char *p = yytext+1; | |
404 | while(*p ==' ' || *p == '\t') p++; | |
405 | yylval.name = buystring(p); | |
406 | return NAME; | |
407 | } | |
7ca04d28 | 408 | {FILENAMECHAR} { |
2fa0b342 | 409 | |
7ca04d28 SC |
410 | boolean loop = false; |
411 | /* | |
412 | Tokenize a name, this is really pain, since a name can be a | |
413 | filename or a symbol name. filenames have slashes and stuff whist | |
414 | in an expression those things are seperate tokens. We hack this by | |
415 | setting lang_in_expression when we are expecting a symbol, so that | |
416 | [/+-] get taken to be seperate tokens. An extra gotcha is | |
417 | expressions after defsyms, we only allow +s and -s in a defsym | |
418 | expression, so -defsym foo=bar+9 /file.o is parsed ok. | |
419 | ||
420 | */ | |
421 | int ch; | |
2fa0b342 | 422 | keyword_type *k; |
7ca04d28 SC |
423 | if (ldgram_in_expression) { |
424 | if (yytext[0] != '/' || ldgram_in_defsym == false) { | |
425 | switch (yytext[0]) { | |
426 | case '/': RTOKEN('/'); | |
427 | case '+': RTOKEN('+'); | |
428 | case '-': RTOKEN('-'); | |
429 | } | |
2fa0b342 | 430 | } |
2fa0b342 DHW |
431 | } |
432 | ||
7ca04d28 SC |
433 | ch = input(); |
434 | while (true) | |
435 | { | |
436 | if (isalpha(ch) || isdigit(ch) || ch == '.' || ch == '_') { | |
437 | yytext[yyleng++] = ch; | |
438 | } | |
439 | else if (ch == '+' || ch == '-' || ch == '/') { | |
440 | if (ldgram_in_expression) break; | |
441 | yytext[yyleng++] = ch; | |
442 | } | |
443 | else | |
444 | break; | |
445 | ch = input(); | |
446 | } | |
447 | ||
2fa0b342 DHW |
448 | yytext[yyleng] = 0; |
449 | unput(ch); | |
450 | ||
451 | for(k = keywords; k ->name != (char *)NULL; k++) { | |
452 | ||
453 | if (strcmp(k->name, yytext)==0) { | |
454 | yylval.token = k->value; | |
455 | return k->value; | |
456 | } | |
457 | } | |
458 | yylval.name = buystring(yytext); | |
459 | return NAME; | |
460 | } | |
461 | ||
462 | ||
463 | ||
464 | ||
465 | ||
466 | %% |