Commit | Line | Data |
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252b5132 | 1 | /* This module handles expression trees. |
a2b64bed | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
67469e1f | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
87f2a346 | 4 | Free Software Foundation, Inc. |
8c95a62e | 5 | Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>. |
252b5132 | 6 | |
3ec57632 | 7 | This file is part of GLD, the Gnu Linker. |
252b5132 | 8 | |
3ec57632 NC |
9 | GLD is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
252b5132 | 13 | |
3ec57632 NC |
14 | GLD is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
3ec57632 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with GLD; see the file COPYING. If not, write to the Free | |
75be928b NC |
21 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
22 | 02110-1301, USA. */ | |
252b5132 | 23 | |
8c95a62e | 24 | /* This module is in charge of working out the contents of expressions. |
252b5132 | 25 | |
8c95a62e KH |
26 | It has to keep track of the relative/absness of a symbol etc. This |
27 | is done by keeping all values in a struct (an etree_value_type) | |
28 | which contains a value, a section to which it is relative and a | |
29 | valid bit. */ | |
252b5132 | 30 | |
252b5132 RH |
31 | #include "bfd.h" |
32 | #include "sysdep.h" | |
33 | #include "bfdlink.h" | |
34 | ||
35 | #include "ld.h" | |
36 | #include "ldmain.h" | |
37 | #include "ldmisc.h" | |
38 | #include "ldexp.h" | |
f856040a | 39 | #include "ldlex.h" |
df2a7313 | 40 | #include <ldgram.h> |
252b5132 | 41 | #include "ldlang.h" |
c7d701b0 | 42 | #include "libiberty.h" |
2c382fb6 | 43 | #include "safe-ctype.h" |
252b5132 | 44 | |
e9ee469a AM |
45 | static void exp_fold_tree_1 (etree_type *); |
46 | static void exp_fold_tree_no_dot (etree_type *); | |
47 | static bfd_vma align_n (bfd_vma, bfd_vma); | |
2d20f7bf | 48 | |
ba916c8a MM |
49 | segment_type *segments; |
50 | ||
e9ee469a | 51 | struct ldexp_control expld; |
fbbb9ac5 | 52 | |
7b17f854 | 53 | /* Print the string representation of the given token. Surround it |
b34976b6 | 54 | with spaces if INFIX_P is TRUE. */ |
7b17f854 | 55 | |
252b5132 | 56 | static void |
1579bae1 | 57 | exp_print_token (token_code_type code, int infix_p) |
252b5132 | 58 | { |
4da711b1 | 59 | static const struct |
c7d701b0 | 60 | { |
8c95a62e | 61 | token_code_type code; |
c7d701b0 NC |
62 | char * name; |
63 | } | |
64 | table[] = | |
65 | { | |
8c95a62e | 66 | { INT, "int" }, |
8c95a62e KH |
67 | { NAME, "NAME" }, |
68 | { PLUSEQ, "+=" }, | |
69 | { MINUSEQ, "-=" }, | |
70 | { MULTEQ, "*=" }, | |
71 | { DIVEQ, "/=" }, | |
72 | { LSHIFTEQ, "<<=" }, | |
73 | { RSHIFTEQ, ">>=" }, | |
74 | { ANDEQ, "&=" }, | |
75 | { OREQ, "|=" }, | |
76 | { OROR, "||" }, | |
77 | { ANDAND, "&&" }, | |
78 | { EQ, "==" }, | |
79 | { NE, "!=" }, | |
80 | { LE, "<=" }, | |
81 | { GE, ">=" }, | |
82 | { LSHIFT, "<<" }, | |
7cecdbff | 83 | { RSHIFT, ">>" }, |
8c95a62e KH |
84 | { ALIGN_K, "ALIGN" }, |
85 | { BLOCK, "BLOCK" }, | |
c7d701b0 NC |
86 | { QUAD, "QUAD" }, |
87 | { SQUAD, "SQUAD" }, | |
88 | { LONG, "LONG" }, | |
89 | { SHORT, "SHORT" }, | |
90 | { BYTE, "BYTE" }, | |
8c95a62e KH |
91 | { SECTIONS, "SECTIONS" }, |
92 | { SIZEOF_HEADERS, "SIZEOF_HEADERS" }, | |
8c95a62e KH |
93 | { MEMORY, "MEMORY" }, |
94 | { DEFINED, "DEFINED" }, | |
95 | { TARGET_K, "TARGET" }, | |
96 | { SEARCH_DIR, "SEARCH_DIR" }, | |
97 | { MAP, "MAP" }, | |
8c95a62e | 98 | { ENTRY, "ENTRY" }, |
c7d701b0 NC |
99 | { NEXT, "NEXT" }, |
100 | { SIZEOF, "SIZEOF" }, | |
101 | { ADDR, "ADDR" }, | |
102 | { LOADADDR, "LOADADDR" }, | |
24718e3b | 103 | { CONSTANT, "CONSTANT" }, |
c7d701b0 | 104 | { MAX_K, "MAX_K" }, |
1049f94e | 105 | { REL, "relocatable" }, |
2d20f7bf | 106 | { DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" }, |
8c37241b | 107 | { DATA_SEGMENT_RELRO_END, "DATA_SEGMENT_RELRO_END" }, |
ba916c8a | 108 | { DATA_SEGMENT_END, "DATA_SEGMENT_END" }, |
3ec57632 NC |
109 | { ORIGIN, "ORIGIN" }, |
110 | { LENGTH, "LENGTH" }, | |
ba916c8a | 111 | { SEGMENT_START, "SEGMENT_START" } |
8c95a62e | 112 | }; |
252b5132 RH |
113 | unsigned int idx; |
114 | ||
7b17f854 RS |
115 | for (idx = 0; idx < ARRAY_SIZE (table); idx++) |
116 | if (table[idx].code == code) | |
117 | break; | |
c7d701b0 | 118 | |
7b17f854 RS |
119 | if (infix_p) |
120 | fputc (' ', config.map_file); | |
121 | ||
122 | if (idx < ARRAY_SIZE (table)) | |
123 | fputs (table[idx].name, config.map_file); | |
124 | else if (code < 127) | |
125 | fputc (code, config.map_file); | |
c7d701b0 | 126 | else |
7b17f854 RS |
127 | fprintf (config.map_file, "<code %d>", code); |
128 | ||
129 | if (infix_p) | |
130 | fputc (' ', config.map_file); | |
252b5132 RH |
131 | } |
132 | ||
4de2d33d | 133 | static void |
e9ee469a | 134 | make_abs (void) |
252b5132 | 135 | { |
e9ee469a AM |
136 | expld.result.value += expld.result.section->vma; |
137 | expld.result.section = bfd_abs_section_ptr; | |
252b5132 RH |
138 | } |
139 | ||
e9ee469a | 140 | static void |
1579bae1 | 141 | new_abs (bfd_vma value) |
252b5132 | 142 | { |
e9ee469a AM |
143 | expld.result.valid_p = TRUE; |
144 | expld.result.section = bfd_abs_section_ptr; | |
145 | expld.result.value = value; | |
146 | expld.result.str = NULL; | |
252b5132 RH |
147 | } |
148 | ||
252b5132 | 149 | etree_type * |
1579bae1 | 150 | exp_intop (bfd_vma value) |
252b5132 | 151 | { |
1579bae1 | 152 | etree_type *new = stat_alloc (sizeof (new->value)); |
252b5132 | 153 | new->type.node_code = INT; |
f856040a | 154 | new->type.lineno = lineno; |
252b5132 | 155 | new->value.value = value; |
2c382fb6 | 156 | new->value.str = NULL; |
252b5132 RH |
157 | new->type.node_class = etree_value; |
158 | return new; | |
2c382fb6 | 159 | } |
252b5132 | 160 | |
2c382fb6 | 161 | etree_type * |
1579bae1 | 162 | exp_bigintop (bfd_vma value, char *str) |
2c382fb6 | 163 | { |
1579bae1 | 164 | etree_type *new = stat_alloc (sizeof (new->value)); |
2c382fb6 | 165 | new->type.node_code = INT; |
f856040a | 166 | new->type.lineno = lineno; |
2c382fb6 AM |
167 | new->value.value = value; |
168 | new->value.str = str; | |
169 | new->type.node_class = etree_value; | |
170 | return new; | |
252b5132 RH |
171 | } |
172 | ||
1049f94e | 173 | /* Build an expression representing an unnamed relocatable value. */ |
252b5132 RH |
174 | |
175 | etree_type * | |
1579bae1 | 176 | exp_relop (asection *section, bfd_vma value) |
252b5132 | 177 | { |
1579bae1 | 178 | etree_type *new = stat_alloc (sizeof (new->rel)); |
252b5132 | 179 | new->type.node_code = REL; |
f856040a | 180 | new->type.lineno = lineno; |
252b5132 RH |
181 | new->type.node_class = etree_rel; |
182 | new->rel.section = section; | |
183 | new->rel.value = value; | |
184 | return new; | |
185 | } | |
186 | ||
e9ee469a AM |
187 | static void |
188 | new_rel (bfd_vma value, char *str, asection *section) | |
252b5132 | 189 | { |
e9ee469a AM |
190 | expld.result.valid_p = TRUE; |
191 | expld.result.value = value; | |
192 | expld.result.str = str; | |
193 | expld.result.section = section; | |
252b5132 RH |
194 | } |
195 | ||
e9ee469a AM |
196 | static void |
197 | new_rel_from_abs (bfd_vma value) | |
252b5132 | 198 | { |
e9ee469a AM |
199 | expld.result.valid_p = TRUE; |
200 | expld.result.value = value - expld.section->vma; | |
201 | expld.result.str = NULL; | |
202 | expld.result.section = expld.section; | |
252b5132 RH |
203 | } |
204 | ||
e9ee469a AM |
205 | static void |
206 | fold_unary (etree_type *tree) | |
0ae1cf52 | 207 | { |
e9ee469a AM |
208 | exp_fold_tree_1 (tree->unary.child); |
209 | if (expld.result.valid_p) | |
0ae1cf52 AM |
210 | { |
211 | switch (tree->type.node_code) | |
212 | { | |
213 | case ALIGN_K: | |
e9ee469a | 214 | if (expld.phase != lang_first_phase_enum) |
dea2f0a8 | 215 | new_rel_from_abs (align_n (expld.dot, expld.result.value)); |
0ae1cf52 | 216 | else |
e9ee469a | 217 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
218 | break; |
219 | ||
220 | case ABSOLUTE: | |
e9ee469a | 221 | make_abs (); |
0ae1cf52 AM |
222 | break; |
223 | ||
224 | case '~': | |
e9ee469a AM |
225 | make_abs (); |
226 | expld.result.value = ~expld.result.value; | |
0ae1cf52 AM |
227 | break; |
228 | ||
229 | case '!': | |
e9ee469a AM |
230 | make_abs (); |
231 | expld.result.value = !expld.result.value; | |
0ae1cf52 AM |
232 | break; |
233 | ||
234 | case '-': | |
e9ee469a AM |
235 | make_abs (); |
236 | expld.result.value = -expld.result.value; | |
0ae1cf52 AM |
237 | break; |
238 | ||
239 | case NEXT: | |
240 | /* Return next place aligned to value. */ | |
e9ee469a | 241 | if (expld.phase != lang_first_phase_enum) |
0ae1cf52 | 242 | { |
e9ee469a AM |
243 | make_abs (); |
244 | expld.result.value = align_n (expld.dot, expld.result.value); | |
0ae1cf52 AM |
245 | } |
246 | else | |
e9ee469a | 247 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
248 | break; |
249 | ||
250 | case DATA_SEGMENT_END: | |
e9ee469a AM |
251 | if (expld.phase != lang_first_phase_enum |
252 | && expld.section == bfd_abs_section_ptr | |
253 | && (expld.dataseg.phase == exp_dataseg_align_seen | |
254 | || expld.dataseg.phase == exp_dataseg_relro_seen | |
255 | || expld.dataseg.phase == exp_dataseg_adjust | |
256 | || expld.dataseg.phase == exp_dataseg_relro_adjust | |
257 | || expld.phase == lang_final_phase_enum)) | |
0ae1cf52 | 258 | { |
e9ee469a AM |
259 | if (expld.dataseg.phase == exp_dataseg_align_seen |
260 | || expld.dataseg.phase == exp_dataseg_relro_seen) | |
0ae1cf52 | 261 | { |
e9ee469a AM |
262 | expld.dataseg.phase = exp_dataseg_end_seen; |
263 | expld.dataseg.end = expld.result.value; | |
0ae1cf52 AM |
264 | } |
265 | } | |
266 | else | |
e9ee469a | 267 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
268 | break; |
269 | ||
270 | default: | |
271 | FAIL (); | |
272 | break; | |
273 | } | |
274 | } | |
0ae1cf52 AM |
275 | } |
276 | ||
e9ee469a AM |
277 | static void |
278 | fold_binary (etree_type *tree) | |
252b5132 | 279 | { |
e9ee469a | 280 | exp_fold_tree_1 (tree->binary.lhs); |
ba916c8a MM |
281 | |
282 | /* The SEGMENT_START operator is special because its first | |
283 | operand is a string, not the name of a symbol. */ | |
e9ee469a | 284 | if (expld.result.valid_p && tree->type.node_code == SEGMENT_START) |
ba916c8a MM |
285 | { |
286 | const char *segment_name; | |
287 | segment_type *seg; | |
288 | /* Check to see if the user has overridden the default | |
289 | value. */ | |
290 | segment_name = tree->binary.rhs->name.name; | |
291 | for (seg = segments; seg; seg = seg->next) | |
292 | if (strcmp (seg->name, segment_name) == 0) | |
293 | { | |
294 | seg->used = TRUE; | |
e9ee469a AM |
295 | expld.result.value = seg->value; |
296 | expld.result.str = NULL; | |
297 | expld.result.section = NULL; | |
ba916c8a MM |
298 | break; |
299 | } | |
300 | } | |
e9ee469a | 301 | else if (expld.result.valid_p) |
252b5132 | 302 | { |
e9ee469a | 303 | etree_value_type lhs = expld.result; |
252b5132 | 304 | |
e9ee469a AM |
305 | exp_fold_tree_1 (tree->binary.rhs); |
306 | if (expld.result.valid_p) | |
252b5132 RH |
307 | { |
308 | /* If the values are from different sections, or this is an | |
309 | absolute expression, make both the source arguments | |
310 | absolute. However, adding or subtracting an absolute | |
311 | value from a relative value is meaningful, and is an | |
312 | exception. */ | |
e9ee469a AM |
313 | if (expld.section != bfd_abs_section_ptr |
314 | && lhs.section == bfd_abs_section_ptr | |
315 | && tree->type.node_code == '+') | |
316 | { | |
317 | /* Keep the section of the rhs term. */ | |
318 | expld.result.value = lhs.value + expld.result.value; | |
319 | return; | |
320 | } | |
321 | else if (expld.section != bfd_abs_section_ptr | |
322 | && expld.result.section == bfd_abs_section_ptr | |
252b5132 RH |
323 | && (tree->type.node_code == '+' |
324 | || tree->type.node_code == '-')) | |
325 | { | |
e9ee469a AM |
326 | /* Keep the section of the lhs term. */ |
327 | expld.result.section = lhs.section; | |
252b5132 | 328 | } |
e9ee469a AM |
329 | else if (expld.result.section != lhs.section |
330 | || expld.section == bfd_abs_section_ptr) | |
252b5132 | 331 | { |
e9ee469a AM |
332 | make_abs (); |
333 | lhs.value += lhs.section->vma; | |
252b5132 RH |
334 | } |
335 | ||
4de2d33d | 336 | switch (tree->type.node_code) |
252b5132 RH |
337 | { |
338 | case '%': | |
e9ee469a AM |
339 | if (expld.result.value != 0) |
340 | expld.result.value = ((bfd_signed_vma) lhs.value | |
341 | % (bfd_signed_vma) expld.result.value); | |
342 | else if (expld.phase != lang_mark_phase_enum) | |
252b5132 | 343 | einfo (_("%F%S %% by zero\n")); |
252b5132 RH |
344 | break; |
345 | ||
346 | case '/': | |
e9ee469a AM |
347 | if (expld.result.value != 0) |
348 | expld.result.value = ((bfd_signed_vma) lhs.value | |
349 | / (bfd_signed_vma) expld.result.value); | |
350 | else if (expld.phase != lang_mark_phase_enum) | |
252b5132 | 351 | einfo (_("%F%S / by zero\n")); |
252b5132 RH |
352 | break; |
353 | ||
e9ee469a AM |
354 | #define BOP(x, y) \ |
355 | case x: \ | |
356 | expld.result.value = lhs.value y expld.result.value; \ | |
357 | break; | |
358 | ||
8c95a62e KH |
359 | BOP ('+', +); |
360 | BOP ('*', *); | |
361 | BOP ('-', -); | |
362 | BOP (LSHIFT, <<); | |
363 | BOP (RSHIFT, >>); | |
364 | BOP (EQ, ==); | |
365 | BOP (NE, !=); | |
366 | BOP ('<', <); | |
367 | BOP ('>', >); | |
368 | BOP (LE, <=); | |
369 | BOP (GE, >=); | |
370 | BOP ('&', &); | |
371 | BOP ('^', ^); | |
372 | BOP ('|', |); | |
373 | BOP (ANDAND, &&); | |
374 | BOP (OROR, ||); | |
252b5132 RH |
375 | |
376 | case MAX_K: | |
e9ee469a AM |
377 | if (lhs.value > expld.result.value) |
378 | expld.result.value = lhs.value; | |
252b5132 RH |
379 | break; |
380 | ||
381 | case MIN_K: | |
e9ee469a AM |
382 | if (lhs.value < expld.result.value) |
383 | expld.result.value = lhs.value; | |
252b5132 RH |
384 | break; |
385 | ||
876f4090 | 386 | case ALIGN_K: |
e9ee469a | 387 | expld.result.value = align_n (lhs.value, expld.result.value); |
876f4090 | 388 | break; |
c468c8bc | 389 | |
2d20f7bf | 390 | case DATA_SEGMENT_ALIGN: |
e9ee469a AM |
391 | if (expld.phase != lang_first_phase_enum |
392 | && expld.section == bfd_abs_section_ptr | |
393 | && (expld.dataseg.phase == exp_dataseg_none | |
394 | || expld.dataseg.phase == exp_dataseg_adjust | |
395 | || expld.dataseg.phase == exp_dataseg_relro_adjust | |
396 | || expld.phase == lang_final_phase_enum)) | |
2d20f7bf | 397 | { |
e9ee469a AM |
398 | bfd_vma maxpage = lhs.value; |
399 | bfd_vma commonpage = expld.result.value; | |
2d20f7bf | 400 | |
e9ee469a AM |
401 | expld.result.value = align_n (expld.dot, maxpage); |
402 | if (expld.dataseg.phase == exp_dataseg_relro_adjust) | |
403 | expld.result.value = expld.dataseg.base; | |
404 | else if (expld.dataseg.phase != exp_dataseg_adjust) | |
2d20f7bf | 405 | { |
e9ee469a AM |
406 | expld.result.value += expld.dot & (maxpage - 1); |
407 | if (expld.phase == lang_allocating_phase_enum) | |
2d20f7bf | 408 | { |
e9ee469a AM |
409 | expld.dataseg.phase = exp_dataseg_align_seen; |
410 | expld.dataseg.min_base = align_n (expld.dot, maxpage); | |
411 | expld.dataseg.base = expld.result.value; | |
412 | expld.dataseg.pagesize = commonpage; | |
413 | expld.dataseg.maxpagesize = maxpage; | |
414 | expld.dataseg.relro_end = 0; | |
2d20f7bf JJ |
415 | } |
416 | } | |
e9ee469a AM |
417 | else if (commonpage < maxpage) |
418 | expld.result.value += ((expld.dot + commonpage - 1) | |
419 | & (maxpage - commonpage)); | |
2d20f7bf JJ |
420 | } |
421 | else | |
e9ee469a | 422 | expld.result.valid_p = FALSE; |
2d20f7bf JJ |
423 | break; |
424 | ||
a4f5ad88 | 425 | case DATA_SEGMENT_RELRO_END: |
e9ee469a AM |
426 | if (expld.phase != lang_first_phase_enum |
427 | && (expld.dataseg.phase == exp_dataseg_align_seen | |
428 | || expld.dataseg.phase == exp_dataseg_adjust | |
429 | || expld.dataseg.phase == exp_dataseg_relro_adjust | |
430 | || expld.phase == lang_final_phase_enum)) | |
a4f5ad88 | 431 | { |
e9ee469a AM |
432 | if (expld.dataseg.phase == exp_dataseg_align_seen |
433 | || expld.dataseg.phase == exp_dataseg_relro_adjust) | |
434 | expld.dataseg.relro_end = lhs.value + expld.result.value; | |
435 | ||
436 | if (expld.dataseg.phase == exp_dataseg_relro_adjust | |
437 | && (expld.dataseg.relro_end | |
438 | & (expld.dataseg.pagesize - 1))) | |
a4f5ad88 | 439 | { |
e9ee469a AM |
440 | expld.dataseg.relro_end += expld.dataseg.pagesize - 1; |
441 | expld.dataseg.relro_end &= ~(expld.dataseg.pagesize - 1); | |
442 | expld.result.value = (expld.dataseg.relro_end | |
443 | - expld.result.value); | |
a4f5ad88 | 444 | } |
e9ee469a AM |
445 | else |
446 | expld.result.value = lhs.value; | |
447 | ||
448 | if (expld.dataseg.phase == exp_dataseg_align_seen) | |
449 | expld.dataseg.phase = exp_dataseg_relro_seen; | |
a4f5ad88 JJ |
450 | } |
451 | else | |
e9ee469a | 452 | expld.result.valid_p = FALSE; |
a4f5ad88 JJ |
453 | break; |
454 | ||
252b5132 | 455 | default: |
8c95a62e | 456 | FAIL (); |
252b5132 RH |
457 | } |
458 | } | |
459 | else | |
e9ee469a | 460 | expld.result.valid_p = FALSE; |
252b5132 | 461 | } |
252b5132 RH |
462 | } |
463 | ||
e9ee469a AM |
464 | static void |
465 | fold_trinary (etree_type *tree) | |
0ae1cf52 | 466 | { |
e9ee469a AM |
467 | exp_fold_tree_1 (tree->trinary.cond); |
468 | if (expld.result.valid_p) | |
469 | exp_fold_tree_1 (expld.result.value | |
470 | ? tree->trinary.lhs | |
471 | : tree->trinary.rhs); | |
0ae1cf52 AM |
472 | } |
473 | ||
e9ee469a AM |
474 | static void |
475 | fold_name (etree_type *tree) | |
252b5132 | 476 | { |
e9ee469a | 477 | memset (&expld.result, 0, sizeof (expld.result)); |
c468c8bc | 478 | |
4de2d33d | 479 | switch (tree->type.node_code) |
8c95a62e KH |
480 | { |
481 | case SIZEOF_HEADERS: | |
e9ee469a AM |
482 | if (expld.phase != lang_first_phase_enum) |
483 | { | |
484 | bfd_vma hdr_size = 0; | |
485 | /* Don't find the real header size if only marking sections; | |
486 | The bfd function may cache incorrect data. */ | |
487 | if (expld.phase != lang_mark_phase_enum) | |
a6b96beb | 488 | hdr_size = bfd_sizeof_headers (output_bfd, &link_info); |
e9ee469a AM |
489 | new_abs (hdr_size); |
490 | } | |
8c95a62e | 491 | break; |
67469e1f | 492 | |
8c95a62e | 493 | case DEFINED: |
e9ee469a | 494 | if (expld.phase == lang_first_phase_enum) |
1b493742 | 495 | lang_track_definedness (tree->name.name); |
8c95a62e KH |
496 | else |
497 | { | |
498 | struct bfd_link_hash_entry *h; | |
420e579c HPN |
499 | int def_iteration |
500 | = lang_symbol_definition_iteration (tree->name.name); | |
8c95a62e KH |
501 | |
502 | h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info, | |
503 | tree->name.name, | |
b34976b6 | 504 | FALSE, FALSE, TRUE); |
e9ee469a AM |
505 | expld.result.value = (h != NULL |
506 | && (h->type == bfd_link_hash_defined | |
507 | || h->type == bfd_link_hash_defweak | |
508 | || h->type == bfd_link_hash_common) | |
509 | && (def_iteration == lang_statement_iteration | |
510 | || def_iteration == -1)); | |
511 | expld.result.section = bfd_abs_section_ptr; | |
512 | expld.result.valid_p = TRUE; | |
8c95a62e KH |
513 | } |
514 | break; | |
67469e1f | 515 | |
8c95a62e | 516 | case NAME: |
e9ee469a AM |
517 | if (expld.phase == lang_first_phase_enum) |
518 | ; | |
519 | else if (tree->name.name[0] == '.' && tree->name.name[1] == 0) | |
520 | new_rel_from_abs (expld.dot); | |
521 | else | |
8c95a62e KH |
522 | { |
523 | struct bfd_link_hash_entry *h; | |
524 | ||
525 | h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info, | |
526 | tree->name.name, | |
1b493742 NS |
527 | TRUE, FALSE, TRUE); |
528 | if (!h) | |
529 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
530 | else if (h->type == bfd_link_hash_defined | |
531 | || h->type == bfd_link_hash_defweak) | |
8c95a62e KH |
532 | { |
533 | if (bfd_is_abs_section (h->u.def.section)) | |
e9ee469a AM |
534 | new_abs (h->u.def.value); |
535 | else | |
8c95a62e KH |
536 | { |
537 | asection *output_section; | |
538 | ||
539 | output_section = h->u.def.section->output_section; | |
540 | if (output_section == NULL) | |
8c95a62e | 541 | { |
e9ee469a AM |
542 | if (expld.phase != lang_mark_phase_enum) |
543 | einfo (_("%X%S: unresolvable symbol `%s'" | |
544 | " referenced in expression\n"), | |
545 | tree->name.name); | |
8c95a62e | 546 | } |
e9ee469a AM |
547 | else |
548 | new_rel (h->u.def.value + h->u.def.section->output_offset, | |
549 | NULL, output_section); | |
8c95a62e KH |
550 | } |
551 | } | |
e9ee469a AM |
552 | else if (expld.phase == lang_final_phase_enum |
553 | || expld.assigning_to_dot) | |
8c95a62e KH |
554 | einfo (_("%F%S: undefined symbol `%s' referenced in expression\n"), |
555 | tree->name.name); | |
1b493742 NS |
556 | else if (h->type == bfd_link_hash_new) |
557 | { | |
558 | h->type = bfd_link_hash_undefined; | |
559 | h->u.undef.abfd = NULL; | |
3eda52aa | 560 | if (h->u.undef.next == NULL && h != link_info.hash->undefs_tail) |
a010d60f | 561 | bfd_link_add_undef (link_info.hash, h); |
1b493742 | 562 | } |
8c95a62e KH |
563 | } |
564 | break; | |
565 | ||
566 | case ADDR: | |
e9ee469a | 567 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
568 | { |
569 | lang_output_section_statement_type *os; | |
570 | ||
571 | os = lang_output_section_find (tree->name.name); | |
cc3e2771 NS |
572 | if (os == NULL) |
573 | { | |
574 | if (expld.phase == lang_final_phase_enum) | |
575 | einfo (_("%F%S: undefined section `%s' referenced in expression\n"), | |
576 | tree->name.name); | |
577 | } | |
578 | else if (os->processed_vma) | |
e9ee469a | 579 | new_rel (0, NULL, os->bfd_section); |
8c95a62e | 580 | } |
8c95a62e KH |
581 | break; |
582 | ||
583 | case LOADADDR: | |
e9ee469a | 584 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
585 | { |
586 | lang_output_section_statement_type *os; | |
587 | ||
588 | os = lang_output_section_find (tree->name.name); | |
cc3e2771 NS |
589 | if (os == NULL) |
590 | { | |
591 | if (expld.phase == lang_final_phase_enum) | |
592 | einfo (_("%F%S: undefined section `%s' referenced in expression\n"), | |
593 | tree->name.name); | |
594 | } | |
595 | else if (os->processed_lma) | |
1b493742 | 596 | { |
e9ee469a | 597 | if (os->load_base == NULL) |
3e23777d | 598 | new_abs (os->bfd_section->lma); |
e9ee469a | 599 | else |
67469e1f AM |
600 | { |
601 | exp_fold_tree_1 (os->load_base); | |
602 | make_abs (); | |
603 | } | |
1b493742 | 604 | } |
8c95a62e | 605 | } |
8c95a62e KH |
606 | break; |
607 | ||
608 | case SIZEOF: | |
e9ee469a | 609 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
610 | { |
611 | int opb = bfd_octets_per_byte (output_bfd); | |
612 | lang_output_section_statement_type *os; | |
613 | ||
614 | os = lang_output_section_find (tree->name.name); | |
5397b1fe | 615 | if (os == NULL) |
cc3e2771 NS |
616 | { |
617 | if (expld.phase == lang_final_phase_enum) | |
618 | einfo (_("%F%S: undefined section `%s' referenced in expression\n"), | |
619 | tree->name.name); | |
620 | new_abs (0); | |
621 | } | |
cde9e0be | 622 | else if (os->processed_vma) |
e9ee469a | 623 | new_abs (os->bfd_section->size / opb); |
8c95a62e | 624 | } |
8c95a62e KH |
625 | break; |
626 | ||
3ec57632 NC |
627 | case LENGTH: |
628 | { | |
629 | lang_memory_region_type *mem; | |
630 | ||
631 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
632 | if (mem != NULL) | |
e9ee469a | 633 | new_abs (mem->length); |
3ec57632 | 634 | else |
e9ee469a AM |
635 | einfo (_("%F%S: undefined MEMORY region `%s'" |
636 | " referenced in expression\n"), tree->name.name); | |
3ec57632 NC |
637 | } |
638 | break; | |
639 | ||
640 | case ORIGIN: | |
641 | { | |
642 | lang_memory_region_type *mem; | |
643 | ||
644 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
645 | if (mem != NULL) | |
e9ee469a | 646 | new_abs (mem->origin); |
3ec57632 | 647 | else |
e9ee469a AM |
648 | einfo (_("%F%S: undefined MEMORY region `%s'" |
649 | " referenced in expression\n"), tree->name.name); | |
3ec57632 NC |
650 | } |
651 | break; | |
652 | ||
24718e3b L |
653 | case CONSTANT: |
654 | if (strcmp (tree->name.name, "MAXPAGESIZE") == 0) | |
655 | new_abs (bfd_emul_get_maxpagesize (default_target)); | |
656 | else if (strcmp (tree->name.name, "COMMONPAGESIZE") == 0) | |
657 | new_abs (bfd_emul_get_commonpagesize (default_target)); | |
658 | else | |
659 | einfo (_("%F%S: unknown constant `%s' referenced in expression\n"), | |
660 | tree->name.name); | |
661 | break; | |
662 | ||
8c95a62e KH |
663 | default: |
664 | FAIL (); | |
665 | break; | |
666 | } | |
252b5132 | 667 | } |
8c95a62e | 668 | |
e9ee469a AM |
669 | static void |
670 | exp_fold_tree_1 (etree_type *tree) | |
252b5132 | 671 | { |
252b5132 RH |
672 | if (tree == NULL) |
673 | { | |
e9ee469a AM |
674 | memset (&expld.result, 0, sizeof (expld.result)); |
675 | return; | |
252b5132 RH |
676 | } |
677 | ||
4de2d33d | 678 | switch (tree->type.node_class) |
252b5132 RH |
679 | { |
680 | case etree_value: | |
e9ee469a | 681 | new_rel (tree->value.value, tree->value.str, expld.section); |
252b5132 RH |
682 | break; |
683 | ||
684 | case etree_rel: | |
e9ee469a AM |
685 | if (expld.phase != lang_first_phase_enum) |
686 | { | |
687 | asection *output_section = tree->rel.section->output_section; | |
688 | new_rel (tree->rel.value + tree->rel.section->output_offset, | |
689 | NULL, output_section); | |
690 | } | |
252b5132 | 691 | else |
e9ee469a | 692 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
693 | break; |
694 | ||
695 | case etree_assert: | |
e9ee469a | 696 | exp_fold_tree_1 (tree->assert_s.child); |
5397b1fe AM |
697 | if (expld.phase == lang_final_phase_enum && !expld.result.value) |
698 | einfo ("%X%P: %s\n", tree->assert_s.message); | |
252b5132 RH |
699 | break; |
700 | ||
701 | case etree_unary: | |
e9ee469a | 702 | fold_unary (tree); |
252b5132 RH |
703 | break; |
704 | ||
705 | case etree_binary: | |
e9ee469a | 706 | fold_binary (tree); |
252b5132 | 707 | break; |
0ae1cf52 AM |
708 | |
709 | case etree_trinary: | |
e9ee469a | 710 | fold_trinary (tree); |
0ae1cf52 | 711 | break; |
252b5132 RH |
712 | |
713 | case etree_assign: | |
714 | case etree_provide: | |
b46a87b1 | 715 | case etree_provided: |
252b5132 RH |
716 | if (tree->assign.dst[0] == '.' && tree->assign.dst[1] == 0) |
717 | { | |
c7d701b0 | 718 | /* Assignment to dot can only be done during allocation. */ |
b46a87b1 | 719 | if (tree->type.node_class != etree_assign) |
252b5132 | 720 | einfo (_("%F%S can not PROVIDE assignment to location counter\n")); |
e9ee469a AM |
721 | if (expld.phase == lang_mark_phase_enum |
722 | || expld.phase == lang_allocating_phase_enum | |
723 | || (expld.phase == lang_final_phase_enum | |
724 | && expld.section == bfd_abs_section_ptr)) | |
252b5132 | 725 | { |
fbbb9ac5 | 726 | /* Notify the folder that this is an assignment to dot. */ |
e9ee469a AM |
727 | expld.assigning_to_dot = TRUE; |
728 | exp_fold_tree_1 (tree->assign.src); | |
729 | expld.assigning_to_dot = FALSE; | |
730 | ||
731 | if (!expld.result.valid_p) | |
732 | { | |
733 | if (expld.phase != lang_mark_phase_enum) | |
734 | einfo (_("%F%S invalid assignment to location counter\n")); | |
735 | } | |
736 | else if (expld.dotp == NULL) | |
737 | einfo (_("%F%S assignment to location counter" | |
738 | " invalid outside of SECTION\n")); | |
252b5132 RH |
739 | else |
740 | { | |
e9ee469a AM |
741 | bfd_vma nextdot; |
742 | ||
743 | nextdot = expld.result.value + expld.section->vma; | |
744 | if (nextdot < expld.dot | |
745 | && expld.section != bfd_abs_section_ptr) | |
746 | einfo (_("%F%S cannot move location counter backwards" | |
747 | " (from %V to %V)\n"), expld.dot, nextdot); | |
252b5132 RH |
748 | else |
749 | { | |
e9ee469a AM |
750 | expld.dot = nextdot; |
751 | *expld.dotp = nextdot; | |
252b5132 RH |
752 | } |
753 | } | |
754 | } | |
8b3d8fa8 | 755 | else |
e9ee469a | 756 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
757 | } |
758 | else | |
759 | { | |
e9ee469a | 760 | struct bfd_link_hash_entry *h = NULL; |
252b5132 | 761 | |
e9ee469a AM |
762 | if (tree->type.node_class == etree_provide) |
763 | { | |
252b5132 | 764 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
e9ee469a AM |
765 | FALSE, FALSE, TRUE); |
766 | if (h == NULL | |
767 | || (h->type != bfd_link_hash_new | |
768 | && h->type != bfd_link_hash_undefined | |
769 | && h->type != bfd_link_hash_common)) | |
770 | { | |
771 | /* Do nothing. The symbol was never referenced, or was | |
772 | defined by some object. */ | |
773 | break; | |
774 | } | |
775 | } | |
776 | ||
777 | exp_fold_tree_1 (tree->assign.src); | |
778 | if (expld.result.valid_p) | |
779 | { | |
1579bae1 | 780 | if (h == NULL) |
67010b46 | 781 | { |
e9ee469a AM |
782 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
783 | TRUE, FALSE, TRUE); | |
784 | if (h == NULL) | |
67010b46 NC |
785 | einfo (_("%P%F:%s: hash creation failed\n"), |
786 | tree->assign.dst); | |
787 | } | |
e9ee469a AM |
788 | |
789 | /* FIXME: Should we worry if the symbol is already | |
790 | defined? */ | |
791 | lang_update_definedness (tree->assign.dst, h); | |
792 | h->type = bfd_link_hash_defined; | |
793 | h->u.def.value = expld.result.value; | |
794 | h->u.def.section = expld.result.section; | |
795 | if (tree->type.node_class == etree_provide) | |
796 | tree->type.node_class = etree_provided; | |
252b5132 RH |
797 | } |
798 | } | |
799 | break; | |
800 | ||
801 | case etree_name: | |
e9ee469a | 802 | fold_name (tree); |
252b5132 RH |
803 | break; |
804 | ||
805 | default: | |
806 | FAIL (); | |
e9ee469a | 807 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
808 | break; |
809 | } | |
252b5132 RH |
810 | } |
811 | ||
e9ee469a AM |
812 | void |
813 | exp_fold_tree (etree_type *tree, asection *current_section, bfd_vma *dotp) | |
75ff4589 | 814 | { |
e9ee469a AM |
815 | expld.dot = *dotp; |
816 | expld.dotp = dotp; | |
817 | expld.section = current_section; | |
818 | exp_fold_tree_1 (tree); | |
75ff4589 L |
819 | } |
820 | ||
e9ee469a AM |
821 | static void |
822 | exp_fold_tree_no_dot (etree_type *tree) | |
252b5132 | 823 | { |
e9ee469a AM |
824 | expld.dot = 0; |
825 | expld.dotp = NULL; | |
826 | expld.section = bfd_abs_section_ptr; | |
827 | exp_fold_tree_1 (tree); | |
252b5132 RH |
828 | } |
829 | ||
830 | etree_type * | |
1579bae1 | 831 | exp_binop (int code, etree_type *lhs, etree_type *rhs) |
252b5132 RH |
832 | { |
833 | etree_type value, *new; | |
252b5132 RH |
834 | |
835 | value.type.node_code = code; | |
f856040a | 836 | value.type.lineno = lhs->type.lineno; |
252b5132 RH |
837 | value.binary.lhs = lhs; |
838 | value.binary.rhs = rhs; | |
839 | value.type.node_class = etree_binary; | |
e9ee469a AM |
840 | exp_fold_tree_no_dot (&value); |
841 | if (expld.result.valid_p) | |
842 | return exp_intop (expld.result.value); | |
843 | ||
1579bae1 AM |
844 | new = stat_alloc (sizeof (new->binary)); |
845 | memcpy (new, &value, sizeof (new->binary)); | |
252b5132 RH |
846 | return new; |
847 | } | |
848 | ||
849 | etree_type * | |
1579bae1 | 850 | exp_trinop (int code, etree_type *cond, etree_type *lhs, etree_type *rhs) |
252b5132 RH |
851 | { |
852 | etree_type value, *new; | |
e9ee469a | 853 | |
252b5132 | 854 | value.type.node_code = code; |
f856040a | 855 | value.type.lineno = lhs->type.lineno; |
252b5132 RH |
856 | value.trinary.lhs = lhs; |
857 | value.trinary.cond = cond; | |
858 | value.trinary.rhs = rhs; | |
859 | value.type.node_class = etree_trinary; | |
e9ee469a AM |
860 | exp_fold_tree_no_dot (&value); |
861 | if (expld.result.valid_p) | |
862 | return exp_intop (expld.result.value); | |
c7d701b0 | 863 | |
1579bae1 AM |
864 | new = stat_alloc (sizeof (new->trinary)); |
865 | memcpy (new, &value, sizeof (new->trinary)); | |
252b5132 RH |
866 | return new; |
867 | } | |
868 | ||
252b5132 | 869 | etree_type * |
1579bae1 | 870 | exp_unop (int code, etree_type *child) |
252b5132 RH |
871 | { |
872 | etree_type value, *new; | |
873 | ||
252b5132 | 874 | value.unary.type.node_code = code; |
f856040a | 875 | value.unary.type.lineno = child->type.lineno; |
252b5132 RH |
876 | value.unary.child = child; |
877 | value.unary.type.node_class = etree_unary; | |
e9ee469a AM |
878 | exp_fold_tree_no_dot (&value); |
879 | if (expld.result.valid_p) | |
880 | return exp_intop (expld.result.value); | |
c7d701b0 | 881 | |
1579bae1 AM |
882 | new = stat_alloc (sizeof (new->unary)); |
883 | memcpy (new, &value, sizeof (new->unary)); | |
252b5132 RH |
884 | return new; |
885 | } | |
886 | ||
252b5132 | 887 | etree_type * |
1579bae1 | 888 | exp_nameop (int code, const char *name) |
252b5132 RH |
889 | { |
890 | etree_type value, *new; | |
e9ee469a | 891 | |
252b5132 | 892 | value.name.type.node_code = code; |
f856040a | 893 | value.name.type.lineno = lineno; |
252b5132 RH |
894 | value.name.name = name; |
895 | value.name.type.node_class = etree_name; | |
896 | ||
e9ee469a AM |
897 | exp_fold_tree_no_dot (&value); |
898 | if (expld.result.valid_p) | |
899 | return exp_intop (expld.result.value); | |
c7d701b0 | 900 | |
1579bae1 AM |
901 | new = stat_alloc (sizeof (new->name)); |
902 | memcpy (new, &value, sizeof (new->name)); | |
252b5132 RH |
903 | return new; |
904 | ||
905 | } | |
906 | ||
252b5132 | 907 | etree_type * |
1579bae1 | 908 | exp_assop (int code, const char *dst, etree_type *src) |
252b5132 | 909 | { |
e9ee469a | 910 | etree_type *new; |
252b5132 | 911 | |
1579bae1 | 912 | new = stat_alloc (sizeof (new->assign)); |
e9ee469a | 913 | new->type.node_code = code; |
f856040a | 914 | new->type.lineno = src->type.lineno; |
e9ee469a AM |
915 | new->type.node_class = etree_assign; |
916 | new->assign.src = src; | |
917 | new->assign.dst = dst; | |
252b5132 RH |
918 | return new; |
919 | } | |
920 | ||
921 | /* Handle PROVIDE. */ | |
922 | ||
923 | etree_type * | |
7af8e998 | 924 | exp_provide (const char *dst, etree_type *src, bfd_boolean hidden) |
252b5132 RH |
925 | { |
926 | etree_type *n; | |
927 | ||
1579bae1 | 928 | n = stat_alloc (sizeof (n->assign)); |
252b5132 | 929 | n->assign.type.node_code = '='; |
f856040a | 930 | n->assign.type.lineno = src->type.lineno; |
252b5132 RH |
931 | n->assign.type.node_class = etree_provide; |
932 | n->assign.src = src; | |
933 | n->assign.dst = dst; | |
7af8e998 | 934 | n->assign.hidden = hidden; |
252b5132 RH |
935 | return n; |
936 | } | |
937 | ||
938 | /* Handle ASSERT. */ | |
939 | ||
940 | etree_type * | |
1579bae1 | 941 | exp_assert (etree_type *exp, const char *message) |
252b5132 RH |
942 | { |
943 | etree_type *n; | |
944 | ||
1579bae1 | 945 | n = stat_alloc (sizeof (n->assert_s)); |
252b5132 | 946 | n->assert_s.type.node_code = '!'; |
f856040a | 947 | n->assert_s.type.lineno = exp->type.lineno; |
252b5132 RH |
948 | n->assert_s.type.node_class = etree_assert; |
949 | n->assert_s.child = exp; | |
950 | n->assert_s.message = message; | |
951 | return n; | |
952 | } | |
953 | ||
4de2d33d | 954 | void |
1579bae1 | 955 | exp_print_tree (etree_type *tree) |
252b5132 | 956 | { |
c7d701b0 NC |
957 | if (config.map_file == NULL) |
958 | config.map_file = stderr; | |
b7a26f91 | 959 | |
c7d701b0 NC |
960 | if (tree == NULL) |
961 | { | |
962 | minfo ("NULL TREE\n"); | |
963 | return; | |
964 | } | |
b7a26f91 | 965 | |
8c95a62e KH |
966 | switch (tree->type.node_class) |
967 | { | |
968 | case etree_value: | |
969 | minfo ("0x%v", tree->value.value); | |
970 | return; | |
971 | case etree_rel: | |
972 | if (tree->rel.section->owner != NULL) | |
973 | minfo ("%B:", tree->rel.section->owner); | |
974 | minfo ("%s+0x%v", tree->rel.section->name, tree->rel.value); | |
975 | return; | |
976 | case etree_assign: | |
8c95a62e | 977 | fprintf (config.map_file, "%s", tree->assign.dst); |
b34976b6 | 978 | exp_print_token (tree->type.node_code, TRUE); |
8c95a62e KH |
979 | exp_print_tree (tree->assign.src); |
980 | break; | |
981 | case etree_provide: | |
b46a87b1 | 982 | case etree_provided: |
8c95a62e KH |
983 | fprintf (config.map_file, "PROVIDE (%s, ", tree->assign.dst); |
984 | exp_print_tree (tree->assign.src); | |
985 | fprintf (config.map_file, ")"); | |
986 | break; | |
987 | case etree_binary: | |
988 | fprintf (config.map_file, "("); | |
989 | exp_print_tree (tree->binary.lhs); | |
b34976b6 | 990 | exp_print_token (tree->type.node_code, TRUE); |
8c95a62e KH |
991 | exp_print_tree (tree->binary.rhs); |
992 | fprintf (config.map_file, ")"); | |
993 | break; | |
994 | case etree_trinary: | |
995 | exp_print_tree (tree->trinary.cond); | |
996 | fprintf (config.map_file, "?"); | |
997 | exp_print_tree (tree->trinary.lhs); | |
998 | fprintf (config.map_file, ":"); | |
999 | exp_print_tree (tree->trinary.rhs); | |
1000 | break; | |
1001 | case etree_unary: | |
b34976b6 | 1002 | exp_print_token (tree->unary.type.node_code, FALSE); |
8c95a62e KH |
1003 | if (tree->unary.child) |
1004 | { | |
7b17f854 | 1005 | fprintf (config.map_file, " ("); |
8c95a62e KH |
1006 | exp_print_tree (tree->unary.child); |
1007 | fprintf (config.map_file, ")"); | |
1008 | } | |
1009 | break; | |
1010 | ||
1011 | case etree_assert: | |
1012 | fprintf (config.map_file, "ASSERT ("); | |
1013 | exp_print_tree (tree->assert_s.child); | |
1014 | fprintf (config.map_file, ", %s)", tree->assert_s.message); | |
1015 | break; | |
1016 | ||
8c95a62e KH |
1017 | case etree_name: |
1018 | if (tree->type.node_code == NAME) | |
1019 | { | |
1020 | fprintf (config.map_file, "%s", tree->name.name); | |
1021 | } | |
1022 | else | |
1023 | { | |
b34976b6 | 1024 | exp_print_token (tree->type.node_code, FALSE); |
8c95a62e | 1025 | if (tree->name.name) |
7b17f854 | 1026 | fprintf (config.map_file, " (%s)", tree->name.name); |
8c95a62e KH |
1027 | } |
1028 | break; | |
1029 | default: | |
1030 | FAIL (); | |
1031 | break; | |
252b5132 | 1032 | } |
252b5132 RH |
1033 | } |
1034 | ||
1035 | bfd_vma | |
e9ee469a | 1036 | exp_get_vma (etree_type *tree, bfd_vma def, char *name) |
252b5132 | 1037 | { |
252b5132 RH |
1038 | if (tree != NULL) |
1039 | { | |
e9ee469a AM |
1040 | exp_fold_tree_no_dot (tree); |
1041 | if (expld.result.valid_p) | |
1042 | return expld.result.value; | |
1043 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
252b5132 | 1044 | einfo (_("%F%S nonconstant expression for %s\n"), name); |
252b5132 | 1045 | } |
e9ee469a | 1046 | return def; |
252b5132 RH |
1047 | } |
1048 | ||
4de2d33d | 1049 | int |
e9ee469a | 1050 | exp_get_value_int (etree_type *tree, int def, char *name) |
252b5132 | 1051 | { |
e9ee469a | 1052 | return exp_get_vma (tree, def, name); |
252b5132 RH |
1053 | } |
1054 | ||
2c382fb6 | 1055 | fill_type * |
e9ee469a | 1056 | exp_get_fill (etree_type *tree, fill_type *def, char *name) |
2c382fb6 AM |
1057 | { |
1058 | fill_type *fill; | |
2c382fb6 AM |
1059 | size_t len; |
1060 | unsigned int val; | |
1061 | ||
1062 | if (tree == NULL) | |
1063 | return def; | |
1064 | ||
e9ee469a AM |
1065 | exp_fold_tree_no_dot (tree); |
1066 | if (!expld.result.valid_p) | |
1067 | { | |
1068 | if (name != NULL && expld.phase != lang_mark_phase_enum) | |
1069 | einfo (_("%F%S nonconstant expression for %s\n"), name); | |
1070 | return def; | |
1071 | } | |
2c382fb6 | 1072 | |
e9ee469a | 1073 | if (expld.result.str != NULL && (len = strlen (expld.result.str)) != 0) |
2c382fb6 AM |
1074 | { |
1075 | unsigned char *dst; | |
1076 | unsigned char *s; | |
1579bae1 | 1077 | fill = xmalloc ((len + 1) / 2 + sizeof (*fill) - 1); |
2c382fb6 AM |
1078 | fill->size = (len + 1) / 2; |
1079 | dst = fill->data; | |
e9ee469a | 1080 | s = (unsigned char *) expld.result.str; |
2c382fb6 AM |
1081 | val = 0; |
1082 | do | |
1083 | { | |
1084 | unsigned int digit; | |
1085 | ||
1086 | digit = *s++ - '0'; | |
1087 | if (digit > 9) | |
1088 | digit = (digit - 'A' + '0' + 10) & 0xf; | |
1089 | val <<= 4; | |
1090 | val += digit; | |
1091 | --len; | |
1092 | if ((len & 1) == 0) | |
1093 | { | |
1094 | *dst++ = val; | |
1095 | val = 0; | |
1096 | } | |
1097 | } | |
1098 | while (len != 0); | |
1099 | } | |
1100 | else | |
1101 | { | |
1579bae1 | 1102 | fill = xmalloc (4 + sizeof (*fill) - 1); |
e9ee469a | 1103 | val = expld.result.value; |
2c382fb6 AM |
1104 | fill->data[0] = (val >> 24) & 0xff; |
1105 | fill->data[1] = (val >> 16) & 0xff; | |
1106 | fill->data[2] = (val >> 8) & 0xff; | |
1107 | fill->data[3] = (val >> 0) & 0xff; | |
1108 | fill->size = 4; | |
1109 | } | |
1110 | return fill; | |
1111 | } | |
1112 | ||
252b5132 | 1113 | bfd_vma |
e9ee469a | 1114 | exp_get_abs_int (etree_type *tree, int def, char *name) |
252b5132 | 1115 | { |
e9ee469a AM |
1116 | if (tree != NULL) |
1117 | { | |
1118 | exp_fold_tree_no_dot (tree); | |
c7d701b0 | 1119 | |
e9ee469a AM |
1120 | if (expld.result.valid_p) |
1121 | { | |
1122 | expld.result.value += expld.result.section->vma; | |
1123 | return expld.result.value; | |
1124 | } | |
1125 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
f856040a L |
1126 | { |
1127 | lineno = tree->type.lineno; | |
1128 | einfo (_("%F%S: nonconstant expression for %s\n"), name); | |
1129 | } | |
e9ee469a AM |
1130 | } |
1131 | return def; | |
252b5132 | 1132 | } |
c553bb91 | 1133 | |
e5caa5e0 AM |
1134 | static bfd_vma |
1135 | align_n (bfd_vma value, bfd_vma align) | |
c553bb91 AM |
1136 | { |
1137 | if (align <= 1) | |
1138 | return value; | |
1139 | ||
1140 | value = (value + align - 1) / align; | |
1141 | return value * align; | |
1142 | } |