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, |
20c2cbe3 | 3 | 2001, 2002, 2003, 2004, 2005 |
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" | |
df2a7313 | 39 | #include <ldgram.h> |
252b5132 | 40 | #include "ldlang.h" |
c7d701b0 | 41 | #include "libiberty.h" |
2c382fb6 | 42 | #include "safe-ctype.h" |
252b5132 | 43 | |
e9ee469a AM |
44 | static void exp_fold_tree_1 (etree_type *); |
45 | static void exp_fold_tree_no_dot (etree_type *); | |
46 | static bfd_vma align_n (bfd_vma, bfd_vma); | |
2d20f7bf | 47 | |
ba916c8a MM |
48 | segment_type *segments; |
49 | ||
e9ee469a | 50 | struct ldexp_control expld; |
fbbb9ac5 | 51 | |
7b17f854 | 52 | /* Print the string representation of the given token. Surround it |
b34976b6 | 53 | with spaces if INFIX_P is TRUE. */ |
7b17f854 | 54 | |
252b5132 | 55 | static void |
1579bae1 | 56 | exp_print_token (token_code_type code, int infix_p) |
252b5132 | 57 | { |
4da711b1 | 58 | static const struct |
c7d701b0 | 59 | { |
8c95a62e | 60 | token_code_type code; |
c7d701b0 NC |
61 | char * name; |
62 | } | |
63 | table[] = | |
64 | { | |
8c95a62e | 65 | { INT, "int" }, |
8c95a62e KH |
66 | { NAME, "NAME" }, |
67 | { PLUSEQ, "+=" }, | |
68 | { MINUSEQ, "-=" }, | |
69 | { MULTEQ, "*=" }, | |
70 | { DIVEQ, "/=" }, | |
71 | { LSHIFTEQ, "<<=" }, | |
72 | { RSHIFTEQ, ">>=" }, | |
73 | { ANDEQ, "&=" }, | |
74 | { OREQ, "|=" }, | |
75 | { OROR, "||" }, | |
76 | { ANDAND, "&&" }, | |
77 | { EQ, "==" }, | |
78 | { NE, "!=" }, | |
79 | { LE, "<=" }, | |
80 | { GE, ">=" }, | |
81 | { LSHIFT, "<<" }, | |
7cecdbff | 82 | { RSHIFT, ">>" }, |
8c95a62e KH |
83 | { ALIGN_K, "ALIGN" }, |
84 | { BLOCK, "BLOCK" }, | |
c7d701b0 NC |
85 | { QUAD, "QUAD" }, |
86 | { SQUAD, "SQUAD" }, | |
87 | { LONG, "LONG" }, | |
88 | { SHORT, "SHORT" }, | |
89 | { BYTE, "BYTE" }, | |
8c95a62e KH |
90 | { SECTIONS, "SECTIONS" }, |
91 | { SIZEOF_HEADERS, "SIZEOF_HEADERS" }, | |
8c95a62e KH |
92 | { MEMORY, "MEMORY" }, |
93 | { DEFINED, "DEFINED" }, | |
94 | { TARGET_K, "TARGET" }, | |
95 | { SEARCH_DIR, "SEARCH_DIR" }, | |
96 | { MAP, "MAP" }, | |
8c95a62e | 97 | { ENTRY, "ENTRY" }, |
c7d701b0 NC |
98 | { NEXT, "NEXT" }, |
99 | { SIZEOF, "SIZEOF" }, | |
100 | { ADDR, "ADDR" }, | |
101 | { LOADADDR, "LOADADDR" }, | |
102 | { MAX_K, "MAX_K" }, | |
1049f94e | 103 | { REL, "relocatable" }, |
2d20f7bf | 104 | { DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" }, |
8c37241b | 105 | { DATA_SEGMENT_RELRO_END, "DATA_SEGMENT_RELRO_END" }, |
ba916c8a | 106 | { DATA_SEGMENT_END, "DATA_SEGMENT_END" }, |
3ec57632 NC |
107 | { ORIGIN, "ORIGIN" }, |
108 | { LENGTH, "LENGTH" }, | |
ba916c8a | 109 | { SEGMENT_START, "SEGMENT_START" } |
8c95a62e | 110 | }; |
252b5132 RH |
111 | unsigned int idx; |
112 | ||
7b17f854 RS |
113 | for (idx = 0; idx < ARRAY_SIZE (table); idx++) |
114 | if (table[idx].code == code) | |
115 | break; | |
c7d701b0 | 116 | |
7b17f854 RS |
117 | if (infix_p) |
118 | fputc (' ', config.map_file); | |
119 | ||
120 | if (idx < ARRAY_SIZE (table)) | |
121 | fputs (table[idx].name, config.map_file); | |
122 | else if (code < 127) | |
123 | fputc (code, config.map_file); | |
c7d701b0 | 124 | else |
7b17f854 RS |
125 | fprintf (config.map_file, "<code %d>", code); |
126 | ||
127 | if (infix_p) | |
128 | fputc (' ', config.map_file); | |
252b5132 RH |
129 | } |
130 | ||
4de2d33d | 131 | static void |
e9ee469a | 132 | make_abs (void) |
252b5132 | 133 | { |
e9ee469a AM |
134 | expld.result.value += expld.result.section->vma; |
135 | expld.result.section = bfd_abs_section_ptr; | |
252b5132 RH |
136 | } |
137 | ||
e9ee469a | 138 | static void |
1579bae1 | 139 | new_abs (bfd_vma value) |
252b5132 | 140 | { |
e9ee469a AM |
141 | expld.result.valid_p = TRUE; |
142 | expld.result.section = bfd_abs_section_ptr; | |
143 | expld.result.value = value; | |
144 | expld.result.str = NULL; | |
252b5132 RH |
145 | } |
146 | ||
252b5132 | 147 | etree_type * |
1579bae1 | 148 | exp_intop (bfd_vma value) |
252b5132 | 149 | { |
1579bae1 | 150 | etree_type *new = stat_alloc (sizeof (new->value)); |
252b5132 RH |
151 | new->type.node_code = INT; |
152 | new->value.value = value; | |
2c382fb6 | 153 | new->value.str = NULL; |
252b5132 RH |
154 | new->type.node_class = etree_value; |
155 | return new; | |
2c382fb6 | 156 | } |
252b5132 | 157 | |
2c382fb6 | 158 | etree_type * |
1579bae1 | 159 | exp_bigintop (bfd_vma value, char *str) |
2c382fb6 | 160 | { |
1579bae1 | 161 | etree_type *new = stat_alloc (sizeof (new->value)); |
2c382fb6 AM |
162 | new->type.node_code = INT; |
163 | new->value.value = value; | |
164 | new->value.str = str; | |
165 | new->type.node_class = etree_value; | |
166 | return new; | |
252b5132 RH |
167 | } |
168 | ||
1049f94e | 169 | /* Build an expression representing an unnamed relocatable value. */ |
252b5132 RH |
170 | |
171 | etree_type * | |
1579bae1 | 172 | exp_relop (asection *section, bfd_vma value) |
252b5132 | 173 | { |
1579bae1 | 174 | etree_type *new = stat_alloc (sizeof (new->rel)); |
252b5132 RH |
175 | new->type.node_code = REL; |
176 | new->type.node_class = etree_rel; | |
177 | new->rel.section = section; | |
178 | new->rel.value = value; | |
179 | return new; | |
180 | } | |
181 | ||
e9ee469a AM |
182 | static void |
183 | new_rel (bfd_vma value, char *str, asection *section) | |
252b5132 | 184 | { |
e9ee469a AM |
185 | expld.result.valid_p = TRUE; |
186 | expld.result.value = value; | |
187 | expld.result.str = str; | |
188 | expld.result.section = section; | |
252b5132 RH |
189 | } |
190 | ||
e9ee469a AM |
191 | static void |
192 | new_rel_from_abs (bfd_vma value) | |
252b5132 | 193 | { |
e9ee469a AM |
194 | expld.result.valid_p = TRUE; |
195 | expld.result.value = value - expld.section->vma; | |
196 | expld.result.str = NULL; | |
197 | expld.result.section = expld.section; | |
252b5132 RH |
198 | } |
199 | ||
e9ee469a AM |
200 | static void |
201 | fold_unary (etree_type *tree) | |
0ae1cf52 | 202 | { |
e9ee469a AM |
203 | exp_fold_tree_1 (tree->unary.child); |
204 | if (expld.result.valid_p) | |
0ae1cf52 AM |
205 | { |
206 | switch (tree->type.node_code) | |
207 | { | |
208 | case ALIGN_K: | |
e9ee469a | 209 | if (expld.phase != lang_first_phase_enum) |
dea2f0a8 | 210 | new_rel_from_abs (align_n (expld.dot, expld.result.value)); |
0ae1cf52 | 211 | else |
e9ee469a | 212 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
213 | break; |
214 | ||
215 | case ABSOLUTE: | |
e9ee469a | 216 | make_abs (); |
0ae1cf52 AM |
217 | break; |
218 | ||
219 | case '~': | |
e9ee469a AM |
220 | make_abs (); |
221 | expld.result.value = ~expld.result.value; | |
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 NEXT: | |
235 | /* Return next place aligned to value. */ | |
e9ee469a | 236 | if (expld.phase != lang_first_phase_enum) |
0ae1cf52 | 237 | { |
e9ee469a AM |
238 | make_abs (); |
239 | expld.result.value = align_n (expld.dot, expld.result.value); | |
0ae1cf52 AM |
240 | } |
241 | else | |
e9ee469a | 242 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
243 | break; |
244 | ||
245 | case DATA_SEGMENT_END: | |
e9ee469a AM |
246 | if (expld.phase != lang_first_phase_enum |
247 | && expld.section == bfd_abs_section_ptr | |
248 | && (expld.dataseg.phase == exp_dataseg_align_seen | |
249 | || expld.dataseg.phase == exp_dataseg_relro_seen | |
250 | || expld.dataseg.phase == exp_dataseg_adjust | |
251 | || expld.dataseg.phase == exp_dataseg_relro_adjust | |
252 | || expld.phase == lang_final_phase_enum)) | |
0ae1cf52 | 253 | { |
e9ee469a AM |
254 | if (expld.dataseg.phase == exp_dataseg_align_seen |
255 | || expld.dataseg.phase == exp_dataseg_relro_seen) | |
0ae1cf52 | 256 | { |
e9ee469a AM |
257 | expld.dataseg.phase = exp_dataseg_end_seen; |
258 | expld.dataseg.end = expld.result.value; | |
0ae1cf52 AM |
259 | } |
260 | } | |
261 | else | |
e9ee469a | 262 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
263 | break; |
264 | ||
265 | default: | |
266 | FAIL (); | |
267 | break; | |
268 | } | |
269 | } | |
0ae1cf52 AM |
270 | } |
271 | ||
e9ee469a AM |
272 | static void |
273 | fold_binary (etree_type *tree) | |
252b5132 | 274 | { |
e9ee469a | 275 | exp_fold_tree_1 (tree->binary.lhs); |
ba916c8a MM |
276 | |
277 | /* The SEGMENT_START operator is special because its first | |
278 | operand is a string, not the name of a symbol. */ | |
e9ee469a | 279 | if (expld.result.valid_p && tree->type.node_code == SEGMENT_START) |
ba916c8a MM |
280 | { |
281 | const char *segment_name; | |
282 | segment_type *seg; | |
283 | /* Check to see if the user has overridden the default | |
284 | value. */ | |
285 | segment_name = tree->binary.rhs->name.name; | |
286 | for (seg = segments; seg; seg = seg->next) | |
287 | if (strcmp (seg->name, segment_name) == 0) | |
288 | { | |
289 | seg->used = TRUE; | |
e9ee469a AM |
290 | expld.result.value = seg->value; |
291 | expld.result.str = NULL; | |
292 | expld.result.section = NULL; | |
ba916c8a MM |
293 | break; |
294 | } | |
295 | } | |
e9ee469a | 296 | else if (expld.result.valid_p) |
252b5132 | 297 | { |
e9ee469a | 298 | etree_value_type lhs = expld.result; |
252b5132 | 299 | |
e9ee469a AM |
300 | exp_fold_tree_1 (tree->binary.rhs); |
301 | if (expld.result.valid_p) | |
252b5132 RH |
302 | { |
303 | /* If the values are from different sections, or this is an | |
304 | absolute expression, make both the source arguments | |
305 | absolute. However, adding or subtracting an absolute | |
306 | value from a relative value is meaningful, and is an | |
307 | exception. */ | |
e9ee469a AM |
308 | if (expld.section != bfd_abs_section_ptr |
309 | && lhs.section == bfd_abs_section_ptr | |
310 | && tree->type.node_code == '+') | |
311 | { | |
312 | /* Keep the section of the rhs term. */ | |
313 | expld.result.value = lhs.value + expld.result.value; | |
314 | return; | |
315 | } | |
316 | else if (expld.section != bfd_abs_section_ptr | |
317 | && expld.result.section == bfd_abs_section_ptr | |
252b5132 RH |
318 | && (tree->type.node_code == '+' |
319 | || tree->type.node_code == '-')) | |
320 | { | |
e9ee469a AM |
321 | /* Keep the section of the lhs term. */ |
322 | expld.result.section = lhs.section; | |
252b5132 | 323 | } |
e9ee469a AM |
324 | else if (expld.result.section != lhs.section |
325 | || expld.section == bfd_abs_section_ptr) | |
252b5132 | 326 | { |
e9ee469a AM |
327 | make_abs (); |
328 | lhs.value += lhs.section->vma; | |
252b5132 RH |
329 | } |
330 | ||
4de2d33d | 331 | switch (tree->type.node_code) |
252b5132 RH |
332 | { |
333 | case '%': | |
e9ee469a AM |
334 | if (expld.result.value != 0) |
335 | expld.result.value = ((bfd_signed_vma) lhs.value | |
336 | % (bfd_signed_vma) expld.result.value); | |
337 | else if (expld.phase != lang_mark_phase_enum) | |
252b5132 | 338 | einfo (_("%F%S %% by zero\n")); |
252b5132 RH |
339 | break; |
340 | ||
341 | case '/': | |
e9ee469a AM |
342 | if (expld.result.value != 0) |
343 | expld.result.value = ((bfd_signed_vma) lhs.value | |
344 | / (bfd_signed_vma) expld.result.value); | |
345 | else if (expld.phase != lang_mark_phase_enum) | |
252b5132 | 346 | einfo (_("%F%S / by zero\n")); |
252b5132 RH |
347 | break; |
348 | ||
e9ee469a AM |
349 | #define BOP(x, y) \ |
350 | case x: \ | |
351 | expld.result.value = lhs.value y expld.result.value; \ | |
352 | break; | |
353 | ||
8c95a62e KH |
354 | BOP ('+', +); |
355 | BOP ('*', *); | |
356 | BOP ('-', -); | |
357 | BOP (LSHIFT, <<); | |
358 | BOP (RSHIFT, >>); | |
359 | BOP (EQ, ==); | |
360 | BOP (NE, !=); | |
361 | BOP ('<', <); | |
362 | BOP ('>', >); | |
363 | BOP (LE, <=); | |
364 | BOP (GE, >=); | |
365 | BOP ('&', &); | |
366 | BOP ('^', ^); | |
367 | BOP ('|', |); | |
368 | BOP (ANDAND, &&); | |
369 | BOP (OROR, ||); | |
252b5132 RH |
370 | |
371 | case MAX_K: | |
e9ee469a AM |
372 | if (lhs.value > expld.result.value) |
373 | expld.result.value = lhs.value; | |
252b5132 RH |
374 | break; |
375 | ||
376 | case MIN_K: | |
e9ee469a AM |
377 | if (lhs.value < expld.result.value) |
378 | expld.result.value = lhs.value; | |
252b5132 RH |
379 | break; |
380 | ||
876f4090 | 381 | case ALIGN_K: |
e9ee469a | 382 | expld.result.value = align_n (lhs.value, expld.result.value); |
876f4090 | 383 | break; |
c468c8bc | 384 | |
2d20f7bf | 385 | case DATA_SEGMENT_ALIGN: |
e9ee469a AM |
386 | if (expld.phase != lang_first_phase_enum |
387 | && expld.section == bfd_abs_section_ptr | |
388 | && (expld.dataseg.phase == exp_dataseg_none | |
389 | || expld.dataseg.phase == exp_dataseg_adjust | |
390 | || expld.dataseg.phase == exp_dataseg_relro_adjust | |
391 | || expld.phase == lang_final_phase_enum)) | |
2d20f7bf | 392 | { |
e9ee469a AM |
393 | bfd_vma maxpage = lhs.value; |
394 | bfd_vma commonpage = expld.result.value; | |
2d20f7bf | 395 | |
e9ee469a AM |
396 | expld.result.value = align_n (expld.dot, maxpage); |
397 | if (expld.dataseg.phase == exp_dataseg_relro_adjust) | |
398 | expld.result.value = expld.dataseg.base; | |
399 | else if (expld.dataseg.phase != exp_dataseg_adjust) | |
2d20f7bf | 400 | { |
e9ee469a AM |
401 | expld.result.value += expld.dot & (maxpage - 1); |
402 | if (expld.phase == lang_allocating_phase_enum) | |
2d20f7bf | 403 | { |
e9ee469a AM |
404 | expld.dataseg.phase = exp_dataseg_align_seen; |
405 | expld.dataseg.min_base = align_n (expld.dot, maxpage); | |
406 | expld.dataseg.base = expld.result.value; | |
407 | expld.dataseg.pagesize = commonpage; | |
408 | expld.dataseg.maxpagesize = maxpage; | |
409 | expld.dataseg.relro_end = 0; | |
2d20f7bf JJ |
410 | } |
411 | } | |
e9ee469a AM |
412 | else if (commonpage < maxpage) |
413 | expld.result.value += ((expld.dot + commonpage - 1) | |
414 | & (maxpage - commonpage)); | |
2d20f7bf JJ |
415 | } |
416 | else | |
e9ee469a | 417 | expld.result.valid_p = FALSE; |
2d20f7bf JJ |
418 | break; |
419 | ||
a4f5ad88 | 420 | case DATA_SEGMENT_RELRO_END: |
e9ee469a AM |
421 | if (expld.phase != lang_first_phase_enum |
422 | && (expld.dataseg.phase == exp_dataseg_align_seen | |
423 | || expld.dataseg.phase == exp_dataseg_adjust | |
424 | || expld.dataseg.phase == exp_dataseg_relro_adjust | |
425 | || expld.phase == lang_final_phase_enum)) | |
a4f5ad88 | 426 | { |
e9ee469a AM |
427 | if (expld.dataseg.phase == exp_dataseg_align_seen |
428 | || expld.dataseg.phase == exp_dataseg_relro_adjust) | |
429 | expld.dataseg.relro_end = lhs.value + expld.result.value; | |
430 | ||
431 | if (expld.dataseg.phase == exp_dataseg_relro_adjust | |
432 | && (expld.dataseg.relro_end | |
433 | & (expld.dataseg.pagesize - 1))) | |
a4f5ad88 | 434 | { |
e9ee469a AM |
435 | expld.dataseg.relro_end += expld.dataseg.pagesize - 1; |
436 | expld.dataseg.relro_end &= ~(expld.dataseg.pagesize - 1); | |
437 | expld.result.value = (expld.dataseg.relro_end | |
438 | - expld.result.value); | |
a4f5ad88 | 439 | } |
e9ee469a AM |
440 | else |
441 | expld.result.value = lhs.value; | |
442 | ||
443 | if (expld.dataseg.phase == exp_dataseg_align_seen) | |
444 | expld.dataseg.phase = exp_dataseg_relro_seen; | |
a4f5ad88 JJ |
445 | } |
446 | else | |
e9ee469a | 447 | expld.result.valid_p = FALSE; |
a4f5ad88 JJ |
448 | break; |
449 | ||
252b5132 | 450 | default: |
8c95a62e | 451 | FAIL (); |
252b5132 RH |
452 | } |
453 | } | |
454 | else | |
e9ee469a | 455 | expld.result.valid_p = FALSE; |
252b5132 | 456 | } |
252b5132 RH |
457 | } |
458 | ||
e9ee469a AM |
459 | static void |
460 | fold_trinary (etree_type *tree) | |
0ae1cf52 | 461 | { |
e9ee469a AM |
462 | exp_fold_tree_1 (tree->trinary.cond); |
463 | if (expld.result.valid_p) | |
464 | exp_fold_tree_1 (expld.result.value | |
465 | ? tree->trinary.lhs | |
466 | : tree->trinary.rhs); | |
0ae1cf52 AM |
467 | } |
468 | ||
e9ee469a AM |
469 | static void |
470 | fold_name (etree_type *tree) | |
252b5132 | 471 | { |
e9ee469a | 472 | memset (&expld.result, 0, sizeof (expld.result)); |
c468c8bc | 473 | |
4de2d33d | 474 | switch (tree->type.node_code) |
8c95a62e KH |
475 | { |
476 | case SIZEOF_HEADERS: | |
e9ee469a AM |
477 | if (expld.phase != lang_first_phase_enum) |
478 | { | |
479 | bfd_vma hdr_size = 0; | |
480 | /* Don't find the real header size if only marking sections; | |
481 | The bfd function may cache incorrect data. */ | |
482 | if (expld.phase != lang_mark_phase_enum) | |
483 | hdr_size = bfd_sizeof_headers (output_bfd, link_info.relocatable); | |
484 | new_abs (hdr_size); | |
485 | } | |
8c95a62e KH |
486 | break; |
487 | case DEFINED: | |
e9ee469a | 488 | if (expld.phase == lang_first_phase_enum) |
1b493742 | 489 | lang_track_definedness (tree->name.name); |
8c95a62e KH |
490 | else |
491 | { | |
492 | struct bfd_link_hash_entry *h; | |
420e579c HPN |
493 | int def_iteration |
494 | = lang_symbol_definition_iteration (tree->name.name); | |
8c95a62e KH |
495 | |
496 | h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info, | |
497 | tree->name.name, | |
b34976b6 | 498 | FALSE, FALSE, TRUE); |
e9ee469a AM |
499 | expld.result.value = (h != NULL |
500 | && (h->type == bfd_link_hash_defined | |
501 | || h->type == bfd_link_hash_defweak | |
502 | || h->type == bfd_link_hash_common) | |
503 | && (def_iteration == lang_statement_iteration | |
504 | || def_iteration == -1)); | |
505 | expld.result.section = bfd_abs_section_ptr; | |
506 | expld.result.valid_p = TRUE; | |
8c95a62e KH |
507 | } |
508 | break; | |
509 | case NAME: | |
e9ee469a AM |
510 | if (expld.phase == lang_first_phase_enum) |
511 | ; | |
512 | else if (tree->name.name[0] == '.' && tree->name.name[1] == 0) | |
513 | new_rel_from_abs (expld.dot); | |
514 | else | |
8c95a62e KH |
515 | { |
516 | struct bfd_link_hash_entry *h; | |
517 | ||
518 | h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info, | |
519 | tree->name.name, | |
1b493742 NS |
520 | TRUE, FALSE, TRUE); |
521 | if (!h) | |
522 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
523 | else if (h->type == bfd_link_hash_defined | |
524 | || h->type == bfd_link_hash_defweak) | |
8c95a62e KH |
525 | { |
526 | if (bfd_is_abs_section (h->u.def.section)) | |
e9ee469a AM |
527 | new_abs (h->u.def.value); |
528 | else | |
8c95a62e KH |
529 | { |
530 | asection *output_section; | |
531 | ||
532 | output_section = h->u.def.section->output_section; | |
533 | if (output_section == NULL) | |
8c95a62e | 534 | { |
e9ee469a AM |
535 | if (expld.phase != lang_mark_phase_enum) |
536 | einfo (_("%X%S: unresolvable symbol `%s'" | |
537 | " referenced in expression\n"), | |
538 | tree->name.name); | |
8c95a62e | 539 | } |
e9ee469a AM |
540 | else |
541 | new_rel (h->u.def.value + h->u.def.section->output_offset, | |
542 | NULL, output_section); | |
8c95a62e KH |
543 | } |
544 | } | |
e9ee469a AM |
545 | else if (expld.phase == lang_final_phase_enum |
546 | || expld.assigning_to_dot) | |
8c95a62e KH |
547 | einfo (_("%F%S: undefined symbol `%s' referenced in expression\n"), |
548 | tree->name.name); | |
1b493742 NS |
549 | else if (h->type == bfd_link_hash_new) |
550 | { | |
551 | h->type = bfd_link_hash_undefined; | |
552 | h->u.undef.abfd = NULL; | |
3eda52aa | 553 | if (h->u.undef.next == NULL && h != link_info.hash->undefs_tail) |
a010d60f | 554 | bfd_link_add_undef (link_info.hash, h); |
1b493742 | 555 | } |
8c95a62e KH |
556 | } |
557 | break; | |
558 | ||
559 | case ADDR: | |
e9ee469a | 560 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
561 | { |
562 | lang_output_section_statement_type *os; | |
563 | ||
564 | os = lang_output_section_find (tree->name.name); | |
e9ee469a AM |
565 | if (os != NULL && os->processed > 0) |
566 | new_rel (0, NULL, os->bfd_section); | |
8c95a62e | 567 | } |
8c95a62e KH |
568 | break; |
569 | ||
570 | case LOADADDR: | |
e9ee469a | 571 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
572 | { |
573 | lang_output_section_statement_type *os; | |
574 | ||
575 | os = lang_output_section_find (tree->name.name); | |
e9ee469a | 576 | if (os != NULL && os->processed > 0) |
1b493742 | 577 | { |
e9ee469a AM |
578 | if (os->load_base == NULL) |
579 | new_rel (0, NULL, os->bfd_section); | |
580 | else | |
581 | exp_fold_tree_1 (os->load_base); | |
1b493742 | 582 | } |
8c95a62e | 583 | } |
8c95a62e KH |
584 | break; |
585 | ||
586 | case SIZEOF: | |
e9ee469a | 587 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
588 | { |
589 | int opb = bfd_octets_per_byte (output_bfd); | |
590 | lang_output_section_statement_type *os; | |
591 | ||
592 | os = lang_output_section_find (tree->name.name); | |
e9ee469a AM |
593 | if (os != NULL && os->processed > 0) |
594 | new_abs (os->bfd_section->size / opb); | |
8c95a62e | 595 | } |
8c95a62e KH |
596 | break; |
597 | ||
3ec57632 NC |
598 | case LENGTH: |
599 | { | |
600 | lang_memory_region_type *mem; | |
601 | ||
602 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
603 | if (mem != NULL) | |
e9ee469a | 604 | new_abs (mem->length); |
3ec57632 | 605 | else |
e9ee469a AM |
606 | einfo (_("%F%S: undefined MEMORY region `%s'" |
607 | " referenced in expression\n"), tree->name.name); | |
3ec57632 NC |
608 | } |
609 | break; | |
610 | ||
611 | case ORIGIN: | |
612 | { | |
613 | lang_memory_region_type *mem; | |
614 | ||
615 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
616 | if (mem != NULL) | |
e9ee469a | 617 | new_abs (mem->origin); |
3ec57632 | 618 | else |
e9ee469a AM |
619 | einfo (_("%F%S: undefined MEMORY region `%s'" |
620 | " referenced in expression\n"), tree->name.name); | |
3ec57632 NC |
621 | } |
622 | break; | |
623 | ||
8c95a62e KH |
624 | default: |
625 | FAIL (); | |
626 | break; | |
627 | } | |
252b5132 | 628 | } |
8c95a62e | 629 | |
e9ee469a AM |
630 | static void |
631 | exp_fold_tree_1 (etree_type *tree) | |
252b5132 | 632 | { |
252b5132 RH |
633 | if (tree == NULL) |
634 | { | |
e9ee469a AM |
635 | memset (&expld.result, 0, sizeof (expld.result)); |
636 | return; | |
252b5132 RH |
637 | } |
638 | ||
4de2d33d | 639 | switch (tree->type.node_class) |
252b5132 RH |
640 | { |
641 | case etree_value: | |
e9ee469a | 642 | new_rel (tree->value.value, tree->value.str, expld.section); |
252b5132 RH |
643 | break; |
644 | ||
645 | case etree_rel: | |
e9ee469a AM |
646 | if (expld.phase != lang_first_phase_enum) |
647 | { | |
648 | asection *output_section = tree->rel.section->output_section; | |
649 | new_rel (tree->rel.value + tree->rel.section->output_offset, | |
650 | NULL, output_section); | |
651 | } | |
252b5132 | 652 | else |
e9ee469a | 653 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
654 | break; |
655 | ||
656 | case etree_assert: | |
e9ee469a AM |
657 | exp_fold_tree_1 (tree->assert_s.child); |
658 | if (expld.result.valid_p) | |
75ff4589 | 659 | { |
e9ee469a | 660 | if (expld.phase == lang_mark_phase_enum) |
75ff4589 L |
661 | /* We don't care if assert fails or not when we are just |
662 | marking if a section is used or not. */ | |
e9ee469a AM |
663 | expld.result.value = 1; |
664 | else if (!expld.result.value) | |
75ff4589 L |
665 | einfo ("%X%P: %s\n", tree->assert_s.message); |
666 | } | |
252b5132 RH |
667 | break; |
668 | ||
669 | case etree_unary: | |
e9ee469a | 670 | fold_unary (tree); |
252b5132 RH |
671 | break; |
672 | ||
673 | case etree_binary: | |
e9ee469a | 674 | fold_binary (tree); |
252b5132 | 675 | break; |
0ae1cf52 AM |
676 | |
677 | case etree_trinary: | |
e9ee469a | 678 | fold_trinary (tree); |
0ae1cf52 | 679 | break; |
252b5132 RH |
680 | |
681 | case etree_assign: | |
682 | case etree_provide: | |
b46a87b1 | 683 | case etree_provided: |
252b5132 RH |
684 | if (tree->assign.dst[0] == '.' && tree->assign.dst[1] == 0) |
685 | { | |
c7d701b0 | 686 | /* Assignment to dot can only be done during allocation. */ |
b46a87b1 | 687 | if (tree->type.node_class != etree_assign) |
252b5132 | 688 | einfo (_("%F%S can not PROVIDE assignment to location counter\n")); |
e9ee469a AM |
689 | if (expld.phase == lang_mark_phase_enum |
690 | || expld.phase == lang_allocating_phase_enum | |
691 | || (expld.phase == lang_final_phase_enum | |
692 | && expld.section == bfd_abs_section_ptr)) | |
252b5132 | 693 | { |
fbbb9ac5 | 694 | /* Notify the folder that this is an assignment to dot. */ |
e9ee469a AM |
695 | expld.assigning_to_dot = TRUE; |
696 | exp_fold_tree_1 (tree->assign.src); | |
697 | expld.assigning_to_dot = FALSE; | |
698 | ||
699 | if (!expld.result.valid_p) | |
700 | { | |
701 | if (expld.phase != lang_mark_phase_enum) | |
702 | einfo (_("%F%S invalid assignment to location counter\n")); | |
703 | } | |
704 | else if (expld.dotp == NULL) | |
705 | einfo (_("%F%S assignment to location counter" | |
706 | " invalid outside of SECTION\n")); | |
252b5132 RH |
707 | else |
708 | { | |
e9ee469a AM |
709 | bfd_vma nextdot; |
710 | ||
711 | nextdot = expld.result.value + expld.section->vma; | |
712 | if (nextdot < expld.dot | |
713 | && expld.section != bfd_abs_section_ptr) | |
714 | einfo (_("%F%S cannot move location counter backwards" | |
715 | " (from %V to %V)\n"), expld.dot, nextdot); | |
252b5132 RH |
716 | else |
717 | { | |
e9ee469a AM |
718 | expld.dot = nextdot; |
719 | *expld.dotp = nextdot; | |
252b5132 RH |
720 | } |
721 | } | |
722 | } | |
8b3d8fa8 | 723 | else |
e9ee469a | 724 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
725 | } |
726 | else | |
727 | { | |
e9ee469a | 728 | struct bfd_link_hash_entry *h = NULL; |
252b5132 | 729 | |
e9ee469a AM |
730 | if (tree->type.node_class == etree_provide) |
731 | { | |
252b5132 | 732 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
e9ee469a AM |
733 | FALSE, FALSE, TRUE); |
734 | if (h == NULL | |
735 | || (h->type != bfd_link_hash_new | |
736 | && h->type != bfd_link_hash_undefined | |
737 | && h->type != bfd_link_hash_common)) | |
738 | { | |
739 | /* Do nothing. The symbol was never referenced, or was | |
740 | defined by some object. */ | |
741 | break; | |
742 | } | |
743 | } | |
744 | ||
745 | exp_fold_tree_1 (tree->assign.src); | |
746 | if (expld.result.valid_p) | |
747 | { | |
1579bae1 | 748 | if (h == NULL) |
67010b46 | 749 | { |
e9ee469a AM |
750 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
751 | TRUE, FALSE, TRUE); | |
752 | if (h == NULL) | |
67010b46 NC |
753 | einfo (_("%P%F:%s: hash creation failed\n"), |
754 | tree->assign.dst); | |
755 | } | |
e9ee469a AM |
756 | |
757 | /* FIXME: Should we worry if the symbol is already | |
758 | defined? */ | |
759 | lang_update_definedness (tree->assign.dst, h); | |
760 | h->type = bfd_link_hash_defined; | |
761 | h->u.def.value = expld.result.value; | |
762 | h->u.def.section = expld.result.section; | |
763 | if (tree->type.node_class == etree_provide) | |
764 | tree->type.node_class = etree_provided; | |
252b5132 RH |
765 | } |
766 | } | |
767 | break; | |
768 | ||
769 | case etree_name: | |
e9ee469a | 770 | fold_name (tree); |
252b5132 RH |
771 | break; |
772 | ||
773 | default: | |
774 | FAIL (); | |
e9ee469a | 775 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
776 | break; |
777 | } | |
252b5132 RH |
778 | } |
779 | ||
e9ee469a AM |
780 | void |
781 | exp_fold_tree (etree_type *tree, asection *current_section, bfd_vma *dotp) | |
75ff4589 | 782 | { |
e9ee469a AM |
783 | expld.dot = *dotp; |
784 | expld.dotp = dotp; | |
785 | expld.section = current_section; | |
786 | exp_fold_tree_1 (tree); | |
75ff4589 L |
787 | } |
788 | ||
e9ee469a AM |
789 | static void |
790 | exp_fold_tree_no_dot (etree_type *tree) | |
252b5132 | 791 | { |
e9ee469a AM |
792 | expld.dot = 0; |
793 | expld.dotp = NULL; | |
794 | expld.section = bfd_abs_section_ptr; | |
795 | exp_fold_tree_1 (tree); | |
252b5132 RH |
796 | } |
797 | ||
798 | etree_type * | |
1579bae1 | 799 | exp_binop (int code, etree_type *lhs, etree_type *rhs) |
252b5132 RH |
800 | { |
801 | etree_type value, *new; | |
252b5132 RH |
802 | |
803 | value.type.node_code = code; | |
804 | value.binary.lhs = lhs; | |
805 | value.binary.rhs = rhs; | |
806 | value.type.node_class = etree_binary; | |
e9ee469a AM |
807 | exp_fold_tree_no_dot (&value); |
808 | if (expld.result.valid_p) | |
809 | return exp_intop (expld.result.value); | |
810 | ||
1579bae1 AM |
811 | new = stat_alloc (sizeof (new->binary)); |
812 | memcpy (new, &value, sizeof (new->binary)); | |
252b5132 RH |
813 | return new; |
814 | } | |
815 | ||
816 | etree_type * | |
1579bae1 | 817 | exp_trinop (int code, etree_type *cond, etree_type *lhs, etree_type *rhs) |
252b5132 RH |
818 | { |
819 | etree_type value, *new; | |
e9ee469a | 820 | |
252b5132 RH |
821 | value.type.node_code = code; |
822 | value.trinary.lhs = lhs; | |
823 | value.trinary.cond = cond; | |
824 | value.trinary.rhs = rhs; | |
825 | value.type.node_class = etree_trinary; | |
e9ee469a AM |
826 | exp_fold_tree_no_dot (&value); |
827 | if (expld.result.valid_p) | |
828 | return exp_intop (expld.result.value); | |
c7d701b0 | 829 | |
1579bae1 AM |
830 | new = stat_alloc (sizeof (new->trinary)); |
831 | memcpy (new, &value, sizeof (new->trinary)); | |
252b5132 RH |
832 | return new; |
833 | } | |
834 | ||
252b5132 | 835 | etree_type * |
1579bae1 | 836 | exp_unop (int code, etree_type *child) |
252b5132 RH |
837 | { |
838 | etree_type value, *new; | |
839 | ||
252b5132 RH |
840 | value.unary.type.node_code = code; |
841 | value.unary.child = child; | |
842 | value.unary.type.node_class = etree_unary; | |
e9ee469a AM |
843 | exp_fold_tree_no_dot (&value); |
844 | if (expld.result.valid_p) | |
845 | return exp_intop (expld.result.value); | |
c7d701b0 | 846 | |
1579bae1 AM |
847 | new = stat_alloc (sizeof (new->unary)); |
848 | memcpy (new, &value, sizeof (new->unary)); | |
252b5132 RH |
849 | return new; |
850 | } | |
851 | ||
252b5132 | 852 | etree_type * |
1579bae1 | 853 | exp_nameop (int code, const char *name) |
252b5132 RH |
854 | { |
855 | etree_type value, *new; | |
e9ee469a | 856 | |
252b5132 RH |
857 | value.name.type.node_code = code; |
858 | value.name.name = name; | |
859 | value.name.type.node_class = etree_name; | |
860 | ||
e9ee469a AM |
861 | exp_fold_tree_no_dot (&value); |
862 | if (expld.result.valid_p) | |
863 | return exp_intop (expld.result.value); | |
c7d701b0 | 864 | |
1579bae1 AM |
865 | new = stat_alloc (sizeof (new->name)); |
866 | memcpy (new, &value, sizeof (new->name)); | |
252b5132 RH |
867 | return new; |
868 | ||
869 | } | |
870 | ||
252b5132 | 871 | etree_type * |
1579bae1 | 872 | exp_assop (int code, const char *dst, etree_type *src) |
252b5132 | 873 | { |
e9ee469a | 874 | etree_type *new; |
252b5132 | 875 | |
1579bae1 | 876 | new = stat_alloc (sizeof (new->assign)); |
e9ee469a AM |
877 | new->type.node_code = code; |
878 | new->type.node_class = etree_assign; | |
879 | new->assign.src = src; | |
880 | new->assign.dst = dst; | |
252b5132 RH |
881 | return new; |
882 | } | |
883 | ||
884 | /* Handle PROVIDE. */ | |
885 | ||
886 | etree_type * | |
1579bae1 | 887 | exp_provide (const char *dst, etree_type *src) |
252b5132 RH |
888 | { |
889 | etree_type *n; | |
890 | ||
1579bae1 | 891 | n = stat_alloc (sizeof (n->assign)); |
252b5132 RH |
892 | n->assign.type.node_code = '='; |
893 | n->assign.type.node_class = etree_provide; | |
894 | n->assign.src = src; | |
895 | n->assign.dst = dst; | |
896 | return n; | |
897 | } | |
898 | ||
899 | /* Handle ASSERT. */ | |
900 | ||
901 | etree_type * | |
1579bae1 | 902 | exp_assert (etree_type *exp, const char *message) |
252b5132 RH |
903 | { |
904 | etree_type *n; | |
905 | ||
1579bae1 | 906 | n = stat_alloc (sizeof (n->assert_s)); |
252b5132 RH |
907 | n->assert_s.type.node_code = '!'; |
908 | n->assert_s.type.node_class = etree_assert; | |
909 | n->assert_s.child = exp; | |
910 | n->assert_s.message = message; | |
911 | return n; | |
912 | } | |
913 | ||
4de2d33d | 914 | void |
1579bae1 | 915 | exp_print_tree (etree_type *tree) |
252b5132 | 916 | { |
c7d701b0 NC |
917 | if (config.map_file == NULL) |
918 | config.map_file = stderr; | |
b7a26f91 | 919 | |
c7d701b0 NC |
920 | if (tree == NULL) |
921 | { | |
922 | minfo ("NULL TREE\n"); | |
923 | return; | |
924 | } | |
b7a26f91 | 925 | |
8c95a62e KH |
926 | switch (tree->type.node_class) |
927 | { | |
928 | case etree_value: | |
929 | minfo ("0x%v", tree->value.value); | |
930 | return; | |
931 | case etree_rel: | |
932 | if (tree->rel.section->owner != NULL) | |
933 | minfo ("%B:", tree->rel.section->owner); | |
934 | minfo ("%s+0x%v", tree->rel.section->name, tree->rel.value); | |
935 | return; | |
936 | case etree_assign: | |
8c95a62e | 937 | fprintf (config.map_file, "%s", tree->assign.dst); |
b34976b6 | 938 | exp_print_token (tree->type.node_code, TRUE); |
8c95a62e KH |
939 | exp_print_tree (tree->assign.src); |
940 | break; | |
941 | case etree_provide: | |
b46a87b1 | 942 | case etree_provided: |
8c95a62e KH |
943 | fprintf (config.map_file, "PROVIDE (%s, ", tree->assign.dst); |
944 | exp_print_tree (tree->assign.src); | |
945 | fprintf (config.map_file, ")"); | |
946 | break; | |
947 | case etree_binary: | |
948 | fprintf (config.map_file, "("); | |
949 | exp_print_tree (tree->binary.lhs); | |
b34976b6 | 950 | exp_print_token (tree->type.node_code, TRUE); |
8c95a62e KH |
951 | exp_print_tree (tree->binary.rhs); |
952 | fprintf (config.map_file, ")"); | |
953 | break; | |
954 | case etree_trinary: | |
955 | exp_print_tree (tree->trinary.cond); | |
956 | fprintf (config.map_file, "?"); | |
957 | exp_print_tree (tree->trinary.lhs); | |
958 | fprintf (config.map_file, ":"); | |
959 | exp_print_tree (tree->trinary.rhs); | |
960 | break; | |
961 | case etree_unary: | |
b34976b6 | 962 | exp_print_token (tree->unary.type.node_code, FALSE); |
8c95a62e KH |
963 | if (tree->unary.child) |
964 | { | |
7b17f854 | 965 | fprintf (config.map_file, " ("); |
8c95a62e KH |
966 | exp_print_tree (tree->unary.child); |
967 | fprintf (config.map_file, ")"); | |
968 | } | |
969 | break; | |
970 | ||
971 | case etree_assert: | |
972 | fprintf (config.map_file, "ASSERT ("); | |
973 | exp_print_tree (tree->assert_s.child); | |
974 | fprintf (config.map_file, ", %s)", tree->assert_s.message); | |
975 | break; | |
976 | ||
8c95a62e KH |
977 | case etree_name: |
978 | if (tree->type.node_code == NAME) | |
979 | { | |
980 | fprintf (config.map_file, "%s", tree->name.name); | |
981 | } | |
982 | else | |
983 | { | |
b34976b6 | 984 | exp_print_token (tree->type.node_code, FALSE); |
8c95a62e | 985 | if (tree->name.name) |
7b17f854 | 986 | fprintf (config.map_file, " (%s)", tree->name.name); |
8c95a62e KH |
987 | } |
988 | break; | |
989 | default: | |
990 | FAIL (); | |
991 | break; | |
252b5132 | 992 | } |
252b5132 RH |
993 | } |
994 | ||
995 | bfd_vma | |
e9ee469a | 996 | exp_get_vma (etree_type *tree, bfd_vma def, char *name) |
252b5132 | 997 | { |
252b5132 RH |
998 | if (tree != NULL) |
999 | { | |
e9ee469a AM |
1000 | exp_fold_tree_no_dot (tree); |
1001 | if (expld.result.valid_p) | |
1002 | return expld.result.value; | |
1003 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
252b5132 | 1004 | einfo (_("%F%S nonconstant expression for %s\n"), name); |
252b5132 | 1005 | } |
e9ee469a | 1006 | return def; |
252b5132 RH |
1007 | } |
1008 | ||
4de2d33d | 1009 | int |
e9ee469a | 1010 | exp_get_value_int (etree_type *tree, int def, char *name) |
252b5132 | 1011 | { |
e9ee469a | 1012 | return exp_get_vma (tree, def, name); |
252b5132 RH |
1013 | } |
1014 | ||
2c382fb6 | 1015 | fill_type * |
e9ee469a | 1016 | exp_get_fill (etree_type *tree, fill_type *def, char *name) |
2c382fb6 AM |
1017 | { |
1018 | fill_type *fill; | |
2c382fb6 AM |
1019 | size_t len; |
1020 | unsigned int val; | |
1021 | ||
1022 | if (tree == NULL) | |
1023 | return def; | |
1024 | ||
e9ee469a AM |
1025 | exp_fold_tree_no_dot (tree); |
1026 | if (!expld.result.valid_p) | |
1027 | { | |
1028 | if (name != NULL && expld.phase != lang_mark_phase_enum) | |
1029 | einfo (_("%F%S nonconstant expression for %s\n"), name); | |
1030 | return def; | |
1031 | } | |
2c382fb6 | 1032 | |
e9ee469a | 1033 | if (expld.result.str != NULL && (len = strlen (expld.result.str)) != 0) |
2c382fb6 AM |
1034 | { |
1035 | unsigned char *dst; | |
1036 | unsigned char *s; | |
1579bae1 | 1037 | fill = xmalloc ((len + 1) / 2 + sizeof (*fill) - 1); |
2c382fb6 AM |
1038 | fill->size = (len + 1) / 2; |
1039 | dst = fill->data; | |
e9ee469a | 1040 | s = (unsigned char *) expld.result.str; |
2c382fb6 AM |
1041 | val = 0; |
1042 | do | |
1043 | { | |
1044 | unsigned int digit; | |
1045 | ||
1046 | digit = *s++ - '0'; | |
1047 | if (digit > 9) | |
1048 | digit = (digit - 'A' + '0' + 10) & 0xf; | |
1049 | val <<= 4; | |
1050 | val += digit; | |
1051 | --len; | |
1052 | if ((len & 1) == 0) | |
1053 | { | |
1054 | *dst++ = val; | |
1055 | val = 0; | |
1056 | } | |
1057 | } | |
1058 | while (len != 0); | |
1059 | } | |
1060 | else | |
1061 | { | |
1579bae1 | 1062 | fill = xmalloc (4 + sizeof (*fill) - 1); |
e9ee469a | 1063 | val = expld.result.value; |
2c382fb6 AM |
1064 | fill->data[0] = (val >> 24) & 0xff; |
1065 | fill->data[1] = (val >> 16) & 0xff; | |
1066 | fill->data[2] = (val >> 8) & 0xff; | |
1067 | fill->data[3] = (val >> 0) & 0xff; | |
1068 | fill->size = 4; | |
1069 | } | |
1070 | return fill; | |
1071 | } | |
1072 | ||
252b5132 | 1073 | bfd_vma |
e9ee469a | 1074 | exp_get_abs_int (etree_type *tree, int def, char *name) |
252b5132 | 1075 | { |
e9ee469a AM |
1076 | if (tree != NULL) |
1077 | { | |
1078 | exp_fold_tree_no_dot (tree); | |
c7d701b0 | 1079 | |
e9ee469a AM |
1080 | if (expld.result.valid_p) |
1081 | { | |
1082 | expld.result.value += expld.result.section->vma; | |
1083 | return expld.result.value; | |
1084 | } | |
1085 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
1086 | einfo (_("%F%S non constant expression for %s\n"), name); | |
1087 | } | |
1088 | return def; | |
252b5132 | 1089 | } |
c553bb91 | 1090 | |
e5caa5e0 AM |
1091 | static bfd_vma |
1092 | align_n (bfd_vma value, bfd_vma align) | |
c553bb91 AM |
1093 | { |
1094 | if (align <= 1) | |
1095 | return value; | |
1096 | ||
1097 | value = (value + align - 1) / align; | |
1098 | return value * align; | |
1099 | } |