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); | |
f68d3f78 | 565 | if (os != NULL && os->processed) |
e9ee469a | 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); | |
f68d3f78 | 576 | if (os != NULL && os->processed) |
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); | |
5397b1fe AM |
593 | if (os == NULL) |
594 | new_abs (0); | |
f68d3f78 | 595 | else if (os->processed) |
e9ee469a | 596 | new_abs (os->bfd_section->size / opb); |
8c95a62e | 597 | } |
8c95a62e KH |
598 | break; |
599 | ||
3ec57632 NC |
600 | case LENGTH: |
601 | { | |
602 | lang_memory_region_type *mem; | |
603 | ||
604 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
605 | if (mem != NULL) | |
e9ee469a | 606 | new_abs (mem->length); |
3ec57632 | 607 | else |
e9ee469a AM |
608 | einfo (_("%F%S: undefined MEMORY region `%s'" |
609 | " referenced in expression\n"), tree->name.name); | |
3ec57632 NC |
610 | } |
611 | break; | |
612 | ||
613 | case ORIGIN: | |
614 | { | |
615 | lang_memory_region_type *mem; | |
616 | ||
617 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
618 | if (mem != NULL) | |
e9ee469a | 619 | new_abs (mem->origin); |
3ec57632 | 620 | else |
e9ee469a AM |
621 | einfo (_("%F%S: undefined MEMORY region `%s'" |
622 | " referenced in expression\n"), tree->name.name); | |
3ec57632 NC |
623 | } |
624 | break; | |
625 | ||
8c95a62e KH |
626 | default: |
627 | FAIL (); | |
628 | break; | |
629 | } | |
252b5132 | 630 | } |
8c95a62e | 631 | |
e9ee469a AM |
632 | static void |
633 | exp_fold_tree_1 (etree_type *tree) | |
252b5132 | 634 | { |
252b5132 RH |
635 | if (tree == NULL) |
636 | { | |
e9ee469a AM |
637 | memset (&expld.result, 0, sizeof (expld.result)); |
638 | return; | |
252b5132 RH |
639 | } |
640 | ||
4de2d33d | 641 | switch (tree->type.node_class) |
252b5132 RH |
642 | { |
643 | case etree_value: | |
e9ee469a | 644 | new_rel (tree->value.value, tree->value.str, expld.section); |
252b5132 RH |
645 | break; |
646 | ||
647 | case etree_rel: | |
e9ee469a AM |
648 | if (expld.phase != lang_first_phase_enum) |
649 | { | |
650 | asection *output_section = tree->rel.section->output_section; | |
651 | new_rel (tree->rel.value + tree->rel.section->output_offset, | |
652 | NULL, output_section); | |
653 | } | |
252b5132 | 654 | else |
e9ee469a | 655 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
656 | break; |
657 | ||
658 | case etree_assert: | |
e9ee469a | 659 | exp_fold_tree_1 (tree->assert_s.child); |
5397b1fe AM |
660 | if (expld.phase == lang_final_phase_enum && !expld.result.value) |
661 | einfo ("%X%P: %s\n", tree->assert_s.message); | |
252b5132 RH |
662 | break; |
663 | ||
664 | case etree_unary: | |
e9ee469a | 665 | fold_unary (tree); |
252b5132 RH |
666 | break; |
667 | ||
668 | case etree_binary: | |
e9ee469a | 669 | fold_binary (tree); |
252b5132 | 670 | break; |
0ae1cf52 AM |
671 | |
672 | case etree_trinary: | |
e9ee469a | 673 | fold_trinary (tree); |
0ae1cf52 | 674 | break; |
252b5132 RH |
675 | |
676 | case etree_assign: | |
677 | case etree_provide: | |
b46a87b1 | 678 | case etree_provided: |
252b5132 RH |
679 | if (tree->assign.dst[0] == '.' && tree->assign.dst[1] == 0) |
680 | { | |
c7d701b0 | 681 | /* Assignment to dot can only be done during allocation. */ |
b46a87b1 | 682 | if (tree->type.node_class != etree_assign) |
252b5132 | 683 | einfo (_("%F%S can not PROVIDE assignment to location counter\n")); |
e9ee469a AM |
684 | if (expld.phase == lang_mark_phase_enum |
685 | || expld.phase == lang_allocating_phase_enum | |
686 | || (expld.phase == lang_final_phase_enum | |
687 | && expld.section == bfd_abs_section_ptr)) | |
252b5132 | 688 | { |
fbbb9ac5 | 689 | /* Notify the folder that this is an assignment to dot. */ |
e9ee469a AM |
690 | expld.assigning_to_dot = TRUE; |
691 | exp_fold_tree_1 (tree->assign.src); | |
692 | expld.assigning_to_dot = FALSE; | |
693 | ||
694 | if (!expld.result.valid_p) | |
695 | { | |
696 | if (expld.phase != lang_mark_phase_enum) | |
697 | einfo (_("%F%S invalid assignment to location counter\n")); | |
698 | } | |
699 | else if (expld.dotp == NULL) | |
700 | einfo (_("%F%S assignment to location counter" | |
701 | " invalid outside of SECTION\n")); | |
252b5132 RH |
702 | else |
703 | { | |
e9ee469a AM |
704 | bfd_vma nextdot; |
705 | ||
706 | nextdot = expld.result.value + expld.section->vma; | |
707 | if (nextdot < expld.dot | |
708 | && expld.section != bfd_abs_section_ptr) | |
709 | einfo (_("%F%S cannot move location counter backwards" | |
710 | " (from %V to %V)\n"), expld.dot, nextdot); | |
252b5132 RH |
711 | else |
712 | { | |
e9ee469a AM |
713 | expld.dot = nextdot; |
714 | *expld.dotp = nextdot; | |
252b5132 RH |
715 | } |
716 | } | |
717 | } | |
8b3d8fa8 | 718 | else |
e9ee469a | 719 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
720 | } |
721 | else | |
722 | { | |
e9ee469a | 723 | struct bfd_link_hash_entry *h = NULL; |
252b5132 | 724 | |
e9ee469a AM |
725 | if (tree->type.node_class == etree_provide) |
726 | { | |
252b5132 | 727 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
e9ee469a AM |
728 | FALSE, FALSE, TRUE); |
729 | if (h == NULL | |
730 | || (h->type != bfd_link_hash_new | |
731 | && h->type != bfd_link_hash_undefined | |
732 | && h->type != bfd_link_hash_common)) | |
733 | { | |
734 | /* Do nothing. The symbol was never referenced, or was | |
735 | defined by some object. */ | |
736 | break; | |
737 | } | |
738 | } | |
739 | ||
740 | exp_fold_tree_1 (tree->assign.src); | |
741 | if (expld.result.valid_p) | |
742 | { | |
1579bae1 | 743 | if (h == NULL) |
67010b46 | 744 | { |
e9ee469a AM |
745 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
746 | TRUE, FALSE, TRUE); | |
747 | if (h == NULL) | |
67010b46 NC |
748 | einfo (_("%P%F:%s: hash creation failed\n"), |
749 | tree->assign.dst); | |
750 | } | |
e9ee469a AM |
751 | |
752 | /* FIXME: Should we worry if the symbol is already | |
753 | defined? */ | |
754 | lang_update_definedness (tree->assign.dst, h); | |
755 | h->type = bfd_link_hash_defined; | |
756 | h->u.def.value = expld.result.value; | |
757 | h->u.def.section = expld.result.section; | |
758 | if (tree->type.node_class == etree_provide) | |
759 | tree->type.node_class = etree_provided; | |
252b5132 RH |
760 | } |
761 | } | |
762 | break; | |
763 | ||
764 | case etree_name: | |
e9ee469a | 765 | fold_name (tree); |
252b5132 RH |
766 | break; |
767 | ||
768 | default: | |
769 | FAIL (); | |
e9ee469a | 770 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
771 | break; |
772 | } | |
252b5132 RH |
773 | } |
774 | ||
e9ee469a AM |
775 | void |
776 | exp_fold_tree (etree_type *tree, asection *current_section, bfd_vma *dotp) | |
75ff4589 | 777 | { |
e9ee469a AM |
778 | expld.dot = *dotp; |
779 | expld.dotp = dotp; | |
780 | expld.section = current_section; | |
781 | exp_fold_tree_1 (tree); | |
75ff4589 L |
782 | } |
783 | ||
e9ee469a AM |
784 | static void |
785 | exp_fold_tree_no_dot (etree_type *tree) | |
252b5132 | 786 | { |
e9ee469a AM |
787 | expld.dot = 0; |
788 | expld.dotp = NULL; | |
789 | expld.section = bfd_abs_section_ptr; | |
790 | exp_fold_tree_1 (tree); | |
252b5132 RH |
791 | } |
792 | ||
793 | etree_type * | |
1579bae1 | 794 | exp_binop (int code, etree_type *lhs, etree_type *rhs) |
252b5132 RH |
795 | { |
796 | etree_type value, *new; | |
252b5132 RH |
797 | |
798 | value.type.node_code = code; | |
799 | value.binary.lhs = lhs; | |
800 | value.binary.rhs = rhs; | |
801 | value.type.node_class = etree_binary; | |
e9ee469a AM |
802 | exp_fold_tree_no_dot (&value); |
803 | if (expld.result.valid_p) | |
804 | return exp_intop (expld.result.value); | |
805 | ||
1579bae1 AM |
806 | new = stat_alloc (sizeof (new->binary)); |
807 | memcpy (new, &value, sizeof (new->binary)); | |
252b5132 RH |
808 | return new; |
809 | } | |
810 | ||
811 | etree_type * | |
1579bae1 | 812 | exp_trinop (int code, etree_type *cond, etree_type *lhs, etree_type *rhs) |
252b5132 RH |
813 | { |
814 | etree_type value, *new; | |
e9ee469a | 815 | |
252b5132 RH |
816 | value.type.node_code = code; |
817 | value.trinary.lhs = lhs; | |
818 | value.trinary.cond = cond; | |
819 | value.trinary.rhs = rhs; | |
820 | value.type.node_class = etree_trinary; | |
e9ee469a AM |
821 | exp_fold_tree_no_dot (&value); |
822 | if (expld.result.valid_p) | |
823 | return exp_intop (expld.result.value); | |
c7d701b0 | 824 | |
1579bae1 AM |
825 | new = stat_alloc (sizeof (new->trinary)); |
826 | memcpy (new, &value, sizeof (new->trinary)); | |
252b5132 RH |
827 | return new; |
828 | } | |
829 | ||
252b5132 | 830 | etree_type * |
1579bae1 | 831 | exp_unop (int code, etree_type *child) |
252b5132 RH |
832 | { |
833 | etree_type value, *new; | |
834 | ||
252b5132 RH |
835 | value.unary.type.node_code = code; |
836 | value.unary.child = child; | |
837 | value.unary.type.node_class = etree_unary; | |
e9ee469a AM |
838 | exp_fold_tree_no_dot (&value); |
839 | if (expld.result.valid_p) | |
840 | return exp_intop (expld.result.value); | |
c7d701b0 | 841 | |
1579bae1 AM |
842 | new = stat_alloc (sizeof (new->unary)); |
843 | memcpy (new, &value, sizeof (new->unary)); | |
252b5132 RH |
844 | return new; |
845 | } | |
846 | ||
252b5132 | 847 | etree_type * |
1579bae1 | 848 | exp_nameop (int code, const char *name) |
252b5132 RH |
849 | { |
850 | etree_type value, *new; | |
e9ee469a | 851 | |
252b5132 RH |
852 | value.name.type.node_code = code; |
853 | value.name.name = name; | |
854 | value.name.type.node_class = etree_name; | |
855 | ||
e9ee469a AM |
856 | exp_fold_tree_no_dot (&value); |
857 | if (expld.result.valid_p) | |
858 | return exp_intop (expld.result.value); | |
c7d701b0 | 859 | |
1579bae1 AM |
860 | new = stat_alloc (sizeof (new->name)); |
861 | memcpy (new, &value, sizeof (new->name)); | |
252b5132 RH |
862 | return new; |
863 | ||
864 | } | |
865 | ||
252b5132 | 866 | etree_type * |
1579bae1 | 867 | exp_assop (int code, const char *dst, etree_type *src) |
252b5132 | 868 | { |
e9ee469a | 869 | etree_type *new; |
252b5132 | 870 | |
1579bae1 | 871 | new = stat_alloc (sizeof (new->assign)); |
e9ee469a AM |
872 | new->type.node_code = code; |
873 | new->type.node_class = etree_assign; | |
874 | new->assign.src = src; | |
875 | new->assign.dst = dst; | |
252b5132 RH |
876 | return new; |
877 | } | |
878 | ||
879 | /* Handle PROVIDE. */ | |
880 | ||
881 | etree_type * | |
7af8e998 | 882 | exp_provide (const char *dst, etree_type *src, bfd_boolean hidden) |
252b5132 RH |
883 | { |
884 | etree_type *n; | |
885 | ||
1579bae1 | 886 | n = stat_alloc (sizeof (n->assign)); |
252b5132 RH |
887 | n->assign.type.node_code = '='; |
888 | n->assign.type.node_class = etree_provide; | |
889 | n->assign.src = src; | |
890 | n->assign.dst = dst; | |
7af8e998 | 891 | n->assign.hidden = hidden; |
252b5132 RH |
892 | return n; |
893 | } | |
894 | ||
895 | /* Handle ASSERT. */ | |
896 | ||
897 | etree_type * | |
1579bae1 | 898 | exp_assert (etree_type *exp, const char *message) |
252b5132 RH |
899 | { |
900 | etree_type *n; | |
901 | ||
1579bae1 | 902 | n = stat_alloc (sizeof (n->assert_s)); |
252b5132 RH |
903 | n->assert_s.type.node_code = '!'; |
904 | n->assert_s.type.node_class = etree_assert; | |
905 | n->assert_s.child = exp; | |
906 | n->assert_s.message = message; | |
907 | return n; | |
908 | } | |
909 | ||
4de2d33d | 910 | void |
1579bae1 | 911 | exp_print_tree (etree_type *tree) |
252b5132 | 912 | { |
c7d701b0 NC |
913 | if (config.map_file == NULL) |
914 | config.map_file = stderr; | |
b7a26f91 | 915 | |
c7d701b0 NC |
916 | if (tree == NULL) |
917 | { | |
918 | minfo ("NULL TREE\n"); | |
919 | return; | |
920 | } | |
b7a26f91 | 921 | |
8c95a62e KH |
922 | switch (tree->type.node_class) |
923 | { | |
924 | case etree_value: | |
925 | minfo ("0x%v", tree->value.value); | |
926 | return; | |
927 | case etree_rel: | |
928 | if (tree->rel.section->owner != NULL) | |
929 | minfo ("%B:", tree->rel.section->owner); | |
930 | minfo ("%s+0x%v", tree->rel.section->name, tree->rel.value); | |
931 | return; | |
932 | case etree_assign: | |
8c95a62e | 933 | fprintf (config.map_file, "%s", tree->assign.dst); |
b34976b6 | 934 | exp_print_token (tree->type.node_code, TRUE); |
8c95a62e KH |
935 | exp_print_tree (tree->assign.src); |
936 | break; | |
937 | case etree_provide: | |
b46a87b1 | 938 | case etree_provided: |
8c95a62e KH |
939 | fprintf (config.map_file, "PROVIDE (%s, ", tree->assign.dst); |
940 | exp_print_tree (tree->assign.src); | |
941 | fprintf (config.map_file, ")"); | |
942 | break; | |
943 | case etree_binary: | |
944 | fprintf (config.map_file, "("); | |
945 | exp_print_tree (tree->binary.lhs); | |
b34976b6 | 946 | exp_print_token (tree->type.node_code, TRUE); |
8c95a62e KH |
947 | exp_print_tree (tree->binary.rhs); |
948 | fprintf (config.map_file, ")"); | |
949 | break; | |
950 | case etree_trinary: | |
951 | exp_print_tree (tree->trinary.cond); | |
952 | fprintf (config.map_file, "?"); | |
953 | exp_print_tree (tree->trinary.lhs); | |
954 | fprintf (config.map_file, ":"); | |
955 | exp_print_tree (tree->trinary.rhs); | |
956 | break; | |
957 | case etree_unary: | |
b34976b6 | 958 | exp_print_token (tree->unary.type.node_code, FALSE); |
8c95a62e KH |
959 | if (tree->unary.child) |
960 | { | |
7b17f854 | 961 | fprintf (config.map_file, " ("); |
8c95a62e KH |
962 | exp_print_tree (tree->unary.child); |
963 | fprintf (config.map_file, ")"); | |
964 | } | |
965 | break; | |
966 | ||
967 | case etree_assert: | |
968 | fprintf (config.map_file, "ASSERT ("); | |
969 | exp_print_tree (tree->assert_s.child); | |
970 | fprintf (config.map_file, ", %s)", tree->assert_s.message); | |
971 | break; | |
972 | ||
8c95a62e KH |
973 | case etree_name: |
974 | if (tree->type.node_code == NAME) | |
975 | { | |
976 | fprintf (config.map_file, "%s", tree->name.name); | |
977 | } | |
978 | else | |
979 | { | |
b34976b6 | 980 | exp_print_token (tree->type.node_code, FALSE); |
8c95a62e | 981 | if (tree->name.name) |
7b17f854 | 982 | fprintf (config.map_file, " (%s)", tree->name.name); |
8c95a62e KH |
983 | } |
984 | break; | |
985 | default: | |
986 | FAIL (); | |
987 | break; | |
252b5132 | 988 | } |
252b5132 RH |
989 | } |
990 | ||
991 | bfd_vma | |
e9ee469a | 992 | exp_get_vma (etree_type *tree, bfd_vma def, char *name) |
252b5132 | 993 | { |
252b5132 RH |
994 | if (tree != NULL) |
995 | { | |
e9ee469a AM |
996 | exp_fold_tree_no_dot (tree); |
997 | if (expld.result.valid_p) | |
998 | return expld.result.value; | |
999 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
252b5132 | 1000 | einfo (_("%F%S nonconstant expression for %s\n"), name); |
252b5132 | 1001 | } |
e9ee469a | 1002 | return def; |
252b5132 RH |
1003 | } |
1004 | ||
4de2d33d | 1005 | int |
e9ee469a | 1006 | exp_get_value_int (etree_type *tree, int def, char *name) |
252b5132 | 1007 | { |
e9ee469a | 1008 | return exp_get_vma (tree, def, name); |
252b5132 RH |
1009 | } |
1010 | ||
2c382fb6 | 1011 | fill_type * |
e9ee469a | 1012 | exp_get_fill (etree_type *tree, fill_type *def, char *name) |
2c382fb6 AM |
1013 | { |
1014 | fill_type *fill; | |
2c382fb6 AM |
1015 | size_t len; |
1016 | unsigned int val; | |
1017 | ||
1018 | if (tree == NULL) | |
1019 | return def; | |
1020 | ||
e9ee469a AM |
1021 | exp_fold_tree_no_dot (tree); |
1022 | if (!expld.result.valid_p) | |
1023 | { | |
1024 | if (name != NULL && expld.phase != lang_mark_phase_enum) | |
1025 | einfo (_("%F%S nonconstant expression for %s\n"), name); | |
1026 | return def; | |
1027 | } | |
2c382fb6 | 1028 | |
e9ee469a | 1029 | if (expld.result.str != NULL && (len = strlen (expld.result.str)) != 0) |
2c382fb6 AM |
1030 | { |
1031 | unsigned char *dst; | |
1032 | unsigned char *s; | |
1579bae1 | 1033 | fill = xmalloc ((len + 1) / 2 + sizeof (*fill) - 1); |
2c382fb6 AM |
1034 | fill->size = (len + 1) / 2; |
1035 | dst = fill->data; | |
e9ee469a | 1036 | s = (unsigned char *) expld.result.str; |
2c382fb6 AM |
1037 | val = 0; |
1038 | do | |
1039 | { | |
1040 | unsigned int digit; | |
1041 | ||
1042 | digit = *s++ - '0'; | |
1043 | if (digit > 9) | |
1044 | digit = (digit - 'A' + '0' + 10) & 0xf; | |
1045 | val <<= 4; | |
1046 | val += digit; | |
1047 | --len; | |
1048 | if ((len & 1) == 0) | |
1049 | { | |
1050 | *dst++ = val; | |
1051 | val = 0; | |
1052 | } | |
1053 | } | |
1054 | while (len != 0); | |
1055 | } | |
1056 | else | |
1057 | { | |
1579bae1 | 1058 | fill = xmalloc (4 + sizeof (*fill) - 1); |
e9ee469a | 1059 | val = expld.result.value; |
2c382fb6 AM |
1060 | fill->data[0] = (val >> 24) & 0xff; |
1061 | fill->data[1] = (val >> 16) & 0xff; | |
1062 | fill->data[2] = (val >> 8) & 0xff; | |
1063 | fill->data[3] = (val >> 0) & 0xff; | |
1064 | fill->size = 4; | |
1065 | } | |
1066 | return fill; | |
1067 | } | |
1068 | ||
252b5132 | 1069 | bfd_vma |
e9ee469a | 1070 | exp_get_abs_int (etree_type *tree, int def, char *name) |
252b5132 | 1071 | { |
e9ee469a AM |
1072 | if (tree != NULL) |
1073 | { | |
1074 | exp_fold_tree_no_dot (tree); | |
c7d701b0 | 1075 | |
e9ee469a AM |
1076 | if (expld.result.valid_p) |
1077 | { | |
1078 | expld.result.value += expld.result.section->vma; | |
1079 | return expld.result.value; | |
1080 | } | |
1081 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
1082 | einfo (_("%F%S non constant expression for %s\n"), name); | |
1083 | } | |
1084 | return def; | |
252b5132 | 1085 | } |
c553bb91 | 1086 | |
e5caa5e0 AM |
1087 | static bfd_vma |
1088 | align_n (bfd_vma value, bfd_vma align) | |
c553bb91 AM |
1089 | { |
1090 | if (align <= 1) | |
1091 | return value; | |
1092 | ||
1093 | value = (value + align - 1) / align; | |
1094 | return value * align; | |
1095 | } |