Commit | Line | Data |
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252b5132 | 1 | /* This module handles expression trees. |
b90efa5b | 2 | Copyright (C) 1991-2015 Free Software Foundation, Inc. |
8c95a62e | 3 | Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>. |
252b5132 | 4 | |
f96b4a7b | 5 | This file is part of the GNU Binutils. |
252b5132 | 6 | |
f96b4a7b | 7 | This program is free software; you can redistribute it and/or modify |
3ec57632 | 8 | it under the terms of the GNU General Public License as published by |
f96b4a7b NC |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
252b5132 | 11 | |
f96b4a7b | 12 | This program is distributed in the hope that it will be useful, |
3ec57632 NC |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
3ec57632 | 17 | You should have received a copy of the GNU General Public License |
f96b4a7b NC |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
21 | ||
252b5132 | 22 | |
8c95a62e | 23 | /* This module is in charge of working out the contents of expressions. |
252b5132 | 24 | |
8c95a62e KH |
25 | It has to keep track of the relative/absness of a symbol etc. This |
26 | is done by keeping all values in a struct (an etree_value_type) | |
27 | which contains a value, a section to which it is relative and a | |
28 | valid bit. */ | |
252b5132 | 29 | |
252b5132 | 30 | #include "sysdep.h" |
3db64b00 | 31 | #include "bfd.h" |
252b5132 RH |
32 | #include "bfdlink.h" |
33 | ||
34 | #include "ld.h" | |
35 | #include "ldmain.h" | |
36 | #include "ldmisc.h" | |
37 | #include "ldexp.h" | |
f856040a | 38 | #include "ldlex.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 | 44 | static void exp_fold_tree_1 (etree_type *); |
e9ee469a | 45 | static bfd_vma align_n (bfd_vma, bfd_vma); |
2d20f7bf | 46 | |
ba916c8a MM |
47 | segment_type *segments; |
48 | ||
e9ee469a | 49 | struct ldexp_control expld; |
fbbb9ac5 | 50 | |
18d6a79d AM |
51 | /* This structure records symbols for which we need to keep track of |
52 | definedness for use in the DEFINED () test. */ | |
53 | ||
54 | struct definedness_hash_entry | |
55 | { | |
56 | struct bfd_hash_entry root; | |
57 | unsigned int by_object : 1; | |
58 | unsigned int by_script : 1; | |
59 | unsigned int iteration : 1; | |
60 | }; | |
61 | ||
62 | static struct bfd_hash_table definedness_table; | |
63 | ||
7b17f854 | 64 | /* Print the string representation of the given token. Surround it |
b34976b6 | 65 | with spaces if INFIX_P is TRUE. */ |
7b17f854 | 66 | |
252b5132 | 67 | static void |
1579bae1 | 68 | exp_print_token (token_code_type code, int infix_p) |
252b5132 | 69 | { |
4da711b1 | 70 | static const struct |
c7d701b0 | 71 | { |
8c95a62e | 72 | token_code_type code; |
67baf8c4 | 73 | const char * name; |
c7d701b0 NC |
74 | } |
75 | table[] = | |
76 | { | |
8c95a62e | 77 | { INT, "int" }, |
8c95a62e KH |
78 | { NAME, "NAME" }, |
79 | { PLUSEQ, "+=" }, | |
80 | { MINUSEQ, "-=" }, | |
81 | { MULTEQ, "*=" }, | |
82 | { DIVEQ, "/=" }, | |
83 | { LSHIFTEQ, "<<=" }, | |
84 | { RSHIFTEQ, ">>=" }, | |
85 | { ANDEQ, "&=" }, | |
86 | { OREQ, "|=" }, | |
87 | { OROR, "||" }, | |
88 | { ANDAND, "&&" }, | |
89 | { EQ, "==" }, | |
90 | { NE, "!=" }, | |
91 | { LE, "<=" }, | |
92 | { GE, ">=" }, | |
93 | { LSHIFT, "<<" }, | |
7cecdbff | 94 | { RSHIFT, ">>" }, |
2e53f7d6 | 95 | { LOG2CEIL, "LOG2CEIL" }, |
8c95a62e KH |
96 | { ALIGN_K, "ALIGN" }, |
97 | { BLOCK, "BLOCK" }, | |
c7d701b0 NC |
98 | { QUAD, "QUAD" }, |
99 | { SQUAD, "SQUAD" }, | |
100 | { LONG, "LONG" }, | |
101 | { SHORT, "SHORT" }, | |
102 | { BYTE, "BYTE" }, | |
8c95a62e KH |
103 | { SECTIONS, "SECTIONS" }, |
104 | { SIZEOF_HEADERS, "SIZEOF_HEADERS" }, | |
8c95a62e KH |
105 | { MEMORY, "MEMORY" }, |
106 | { DEFINED, "DEFINED" }, | |
107 | { TARGET_K, "TARGET" }, | |
108 | { SEARCH_DIR, "SEARCH_DIR" }, | |
109 | { MAP, "MAP" }, | |
8c95a62e | 110 | { ENTRY, "ENTRY" }, |
c7d701b0 | 111 | { NEXT, "NEXT" }, |
362c1d1a | 112 | { ALIGNOF, "ALIGNOF" }, |
c7d701b0 NC |
113 | { SIZEOF, "SIZEOF" }, |
114 | { ADDR, "ADDR" }, | |
115 | { LOADADDR, "LOADADDR" }, | |
24718e3b | 116 | { CONSTANT, "CONSTANT" }, |
8c0848b5 AM |
117 | { ABSOLUTE, "ABSOLUTE" }, |
118 | { MAX_K, "MAX" }, | |
119 | { MIN_K, "MIN" }, | |
120 | { ASSERT_K, "ASSERT" }, | |
1049f94e | 121 | { REL, "relocatable" }, |
2d20f7bf | 122 | { DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" }, |
8c37241b | 123 | { DATA_SEGMENT_RELRO_END, "DATA_SEGMENT_RELRO_END" }, |
ba916c8a | 124 | { DATA_SEGMENT_END, "DATA_SEGMENT_END" }, |
3ec57632 NC |
125 | { ORIGIN, "ORIGIN" }, |
126 | { LENGTH, "LENGTH" }, | |
ba916c8a | 127 | { SEGMENT_START, "SEGMENT_START" } |
8c95a62e | 128 | }; |
252b5132 RH |
129 | unsigned int idx; |
130 | ||
7b17f854 RS |
131 | for (idx = 0; idx < ARRAY_SIZE (table); idx++) |
132 | if (table[idx].code == code) | |
133 | break; | |
c7d701b0 | 134 | |
7b17f854 RS |
135 | if (infix_p) |
136 | fputc (' ', config.map_file); | |
137 | ||
138 | if (idx < ARRAY_SIZE (table)) | |
139 | fputs (table[idx].name, config.map_file); | |
140 | else if (code < 127) | |
141 | fputc (code, config.map_file); | |
c7d701b0 | 142 | else |
7b17f854 RS |
143 | fprintf (config.map_file, "<code %d>", code); |
144 | ||
145 | if (infix_p) | |
146 | fputc (' ', config.map_file); | |
252b5132 RH |
147 | } |
148 | ||
2e53f7d6 NC |
149 | static void |
150 | make_log2ceil (void) | |
151 | { | |
152 | bfd_vma value = expld.result.value; | |
153 | bfd_vma result = -1; | |
154 | bfd_boolean round_up = FALSE; | |
155 | ||
156 | do | |
157 | { | |
158 | result++; | |
159 | /* If more than one bit is set in the value we will need to round up. */ | |
160 | if ((value > 1) && (value & 1)) | |
161 | round_up = TRUE; | |
162 | } | |
163 | while (value >>= 1); | |
164 | ||
165 | if (round_up) | |
166 | result += 1; | |
167 | expld.result.section = NULL; | |
168 | expld.result.value = result; | |
169 | } | |
170 | ||
4de2d33d | 171 | static void |
e9ee469a | 172 | make_abs (void) |
252b5132 | 173 | { |
7542af2a AM |
174 | if (expld.result.section != NULL) |
175 | expld.result.value += expld.result.section->vma; | |
e9ee469a | 176 | expld.result.section = bfd_abs_section_ptr; |
252b5132 RH |
177 | } |
178 | ||
e9ee469a | 179 | static void |
1579bae1 | 180 | new_abs (bfd_vma value) |
252b5132 | 181 | { |
e9ee469a AM |
182 | expld.result.valid_p = TRUE; |
183 | expld.result.section = bfd_abs_section_ptr; | |
184 | expld.result.value = value; | |
185 | expld.result.str = NULL; | |
252b5132 RH |
186 | } |
187 | ||
252b5132 | 188 | etree_type * |
1579bae1 | 189 | exp_intop (bfd_vma value) |
252b5132 | 190 | { |
d3ce72d0 NC |
191 | etree_type *new_e = (etree_type *) stat_alloc (sizeof (new_e->value)); |
192 | new_e->type.node_code = INT; | |
dab69f68 | 193 | new_e->type.filename = ldlex_filename (); |
d3ce72d0 NC |
194 | new_e->type.lineno = lineno; |
195 | new_e->value.value = value; | |
196 | new_e->value.str = NULL; | |
197 | new_e->type.node_class = etree_value; | |
198 | return new_e; | |
2c382fb6 | 199 | } |
252b5132 | 200 | |
2c382fb6 | 201 | etree_type * |
1579bae1 | 202 | exp_bigintop (bfd_vma value, char *str) |
2c382fb6 | 203 | { |
d3ce72d0 NC |
204 | etree_type *new_e = (etree_type *) stat_alloc (sizeof (new_e->value)); |
205 | new_e->type.node_code = INT; | |
dab69f68 | 206 | new_e->type.filename = ldlex_filename (); |
d3ce72d0 NC |
207 | new_e->type.lineno = lineno; |
208 | new_e->value.value = value; | |
209 | new_e->value.str = str; | |
210 | new_e->type.node_class = etree_value; | |
211 | return new_e; | |
252b5132 RH |
212 | } |
213 | ||
1049f94e | 214 | /* Build an expression representing an unnamed relocatable value. */ |
252b5132 RH |
215 | |
216 | etree_type * | |
1579bae1 | 217 | exp_relop (asection *section, bfd_vma value) |
252b5132 | 218 | { |
d3ce72d0 NC |
219 | etree_type *new_e = (etree_type *) stat_alloc (sizeof (new_e->rel)); |
220 | new_e->type.node_code = REL; | |
dab69f68 | 221 | new_e->type.filename = ldlex_filename (); |
d3ce72d0 NC |
222 | new_e->type.lineno = lineno; |
223 | new_e->type.node_class = etree_rel; | |
224 | new_e->rel.section = section; | |
225 | new_e->rel.value = value; | |
226 | return new_e; | |
252b5132 RH |
227 | } |
228 | ||
7542af2a AM |
229 | static void |
230 | new_number (bfd_vma value) | |
231 | { | |
232 | expld.result.valid_p = TRUE; | |
233 | expld.result.value = value; | |
234 | expld.result.str = NULL; | |
235 | expld.result.section = NULL; | |
236 | } | |
237 | ||
e9ee469a | 238 | static void |
5942515f | 239 | new_rel (bfd_vma value, asection *section) |
252b5132 | 240 | { |
e9ee469a AM |
241 | expld.result.valid_p = TRUE; |
242 | expld.result.value = value; | |
5942515f | 243 | expld.result.str = NULL; |
e9ee469a | 244 | expld.result.section = section; |
252b5132 RH |
245 | } |
246 | ||
e9ee469a AM |
247 | static void |
248 | new_rel_from_abs (bfd_vma value) | |
252b5132 | 249 | { |
d2667025 AM |
250 | asection *s = expld.section; |
251 | ||
252 | if (s == bfd_abs_section_ptr && expld.phase == lang_final_phase_enum) | |
253 | s = section_for_dot (); | |
e9ee469a | 254 | expld.result.valid_p = TRUE; |
d2667025 | 255 | expld.result.value = value - s->vma; |
e9ee469a | 256 | expld.result.str = NULL; |
d2667025 | 257 | expld.result.section = s; |
252b5132 RH |
258 | } |
259 | ||
18d6a79d AM |
260 | /* New-function for the definedness hash table. */ |
261 | ||
262 | static struct bfd_hash_entry * | |
263 | definedness_newfunc (struct bfd_hash_entry *entry, | |
264 | struct bfd_hash_table *table ATTRIBUTE_UNUSED, | |
265 | const char *name ATTRIBUTE_UNUSED) | |
266 | { | |
267 | struct definedness_hash_entry *ret = (struct definedness_hash_entry *) entry; | |
268 | ||
269 | if (ret == NULL) | |
270 | ret = (struct definedness_hash_entry *) | |
271 | bfd_hash_allocate (table, sizeof (struct definedness_hash_entry)); | |
272 | ||
273 | if (ret == NULL) | |
274 | einfo (_("%P%F: bfd_hash_allocate failed creating symbol %s\n"), name); | |
275 | ||
276 | ret->by_object = 0; | |
277 | ret->by_script = 0; | |
278 | ret->iteration = 0; | |
279 | return &ret->root; | |
280 | } | |
281 | ||
282 | /* Called during processing of linker script script expressions. | |
283 | For symbols assigned in a linker script, return a struct describing | |
284 | where the symbol is defined relative to the current expression, | |
285 | otherwise return NULL. */ | |
286 | ||
287 | static struct definedness_hash_entry * | |
288 | symbol_defined (const char *name) | |
289 | { | |
290 | return ((struct definedness_hash_entry *) | |
291 | bfd_hash_lookup (&definedness_table, name, FALSE, FALSE)); | |
292 | } | |
293 | ||
422f1c65 AM |
294 | /* Update the definedness state of NAME. Return FALSE if script symbol |
295 | is multiply defining a strong symbol in an object. */ | |
18d6a79d | 296 | |
422f1c65 | 297 | static bfd_boolean |
18d6a79d AM |
298 | update_definedness (const char *name, struct bfd_link_hash_entry *h) |
299 | { | |
422f1c65 | 300 | bfd_boolean ret; |
18d6a79d AM |
301 | struct definedness_hash_entry *defentry |
302 | = (struct definedness_hash_entry *) | |
303 | bfd_hash_lookup (&definedness_table, name, TRUE, FALSE); | |
304 | ||
305 | if (defentry == NULL) | |
306 | einfo (_("%P%F: bfd_hash_lookup failed creating symbol %s\n"), name); | |
307 | ||
308 | /* If the symbol was already defined, and not by a script, then it | |
cd8e2bcf | 309 | must be defined by an object file or by the linker target code. */ |
422f1c65 | 310 | ret = TRUE; |
18d6a79d | 311 | if (!defentry->by_script |
cd8e2bcf AM |
312 | && (h->type == bfd_link_hash_defined |
313 | || h->type == bfd_link_hash_defweak | |
314 | || h->type == bfd_link_hash_common)) | |
422f1c65 AM |
315 | { |
316 | defentry->by_object = 1; | |
317 | if (h->type == bfd_link_hash_defined | |
318 | && h->u.def.section->output_section != NULL | |
319 | && !h->linker_def) | |
320 | ret = FALSE; | |
321 | } | |
18d6a79d AM |
322 | |
323 | defentry->by_script = 1; | |
324 | defentry->iteration = lang_statement_iteration; | |
422f1c65 | 325 | return ret; |
18d6a79d AM |
326 | } |
327 | ||
e9ee469a AM |
328 | static void |
329 | fold_unary (etree_type *tree) | |
0ae1cf52 | 330 | { |
e9ee469a AM |
331 | exp_fold_tree_1 (tree->unary.child); |
332 | if (expld.result.valid_p) | |
0ae1cf52 AM |
333 | { |
334 | switch (tree->type.node_code) | |
335 | { | |
336 | case ALIGN_K: | |
e9ee469a | 337 | if (expld.phase != lang_first_phase_enum) |
e0a3af22 | 338 | new_rel_from_abs (align_n (expld.dot, expld.result.value)); |
0ae1cf52 | 339 | else |
e9ee469a | 340 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
341 | break; |
342 | ||
343 | case ABSOLUTE: | |
e9ee469a | 344 | make_abs (); |
0ae1cf52 AM |
345 | break; |
346 | ||
2e53f7d6 NC |
347 | case LOG2CEIL: |
348 | make_log2ceil (); | |
349 | break; | |
350 | ||
0ae1cf52 | 351 | case '~': |
e9ee469a | 352 | expld.result.value = ~expld.result.value; |
0ae1cf52 AM |
353 | break; |
354 | ||
355 | case '!': | |
e9ee469a | 356 | expld.result.value = !expld.result.value; |
0ae1cf52 AM |
357 | break; |
358 | ||
359 | case '-': | |
e9ee469a | 360 | expld.result.value = -expld.result.value; |
0ae1cf52 AM |
361 | break; |
362 | ||
363 | case NEXT: | |
364 | /* Return next place aligned to value. */ | |
e9ee469a | 365 | if (expld.phase != lang_first_phase_enum) |
0ae1cf52 | 366 | { |
e9ee469a | 367 | make_abs (); |
e0a3af22 | 368 | expld.result.value = align_n (expld.dot, expld.result.value); |
0ae1cf52 AM |
369 | } |
370 | else | |
e9ee469a | 371 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
372 | break; |
373 | ||
374 | case DATA_SEGMENT_END: | |
ea7c2e6c AM |
375 | if (expld.phase == lang_first_phase_enum |
376 | || expld.section != bfd_abs_section_ptr) | |
0ae1cf52 | 377 | { |
ea7c2e6c AM |
378 | expld.result.valid_p = FALSE; |
379 | } | |
380 | else if (expld.dataseg.phase == exp_dataseg_align_seen | |
381 | || expld.dataseg.phase == exp_dataseg_relro_seen) | |
382 | { | |
383 | expld.dataseg.phase = exp_dataseg_end_seen; | |
384 | expld.dataseg.end = expld.result.value; | |
385 | } | |
386 | else if (expld.dataseg.phase == exp_dataseg_done | |
387 | || expld.dataseg.phase == exp_dataseg_adjust | |
388 | || expld.dataseg.phase == exp_dataseg_relro_adjust) | |
389 | { | |
390 | /* OK. */ | |
0ae1cf52 AM |
391 | } |
392 | else | |
e9ee469a | 393 | expld.result.valid_p = FALSE; |
0ae1cf52 AM |
394 | break; |
395 | ||
396 | default: | |
397 | FAIL (); | |
398 | break; | |
399 | } | |
400 | } | |
0ae1cf52 AM |
401 | } |
402 | ||
e9ee469a AM |
403 | static void |
404 | fold_binary (etree_type *tree) | |
252b5132 | 405 | { |
4ac0c898 | 406 | etree_value_type lhs; |
e9ee469a | 407 | exp_fold_tree_1 (tree->binary.lhs); |
ba916c8a MM |
408 | |
409 | /* The SEGMENT_START operator is special because its first | |
8c0848b5 AM |
410 | operand is a string, not the name of a symbol. Note that the |
411 | operands have been swapped, so binary.lhs is second (default) | |
412 | operand, binary.rhs is first operand. */ | |
e9ee469a | 413 | if (expld.result.valid_p && tree->type.node_code == SEGMENT_START) |
ba916c8a MM |
414 | { |
415 | const char *segment_name; | |
416 | segment_type *seg; | |
7542af2a | 417 | |
ba916c8a MM |
418 | /* Check to see if the user has overridden the default |
419 | value. */ | |
420 | segment_name = tree->binary.rhs->name.name; | |
e4492aa0 | 421 | for (seg = segments; seg; seg = seg->next) |
ba916c8a MM |
422 | if (strcmp (seg->name, segment_name) == 0) |
423 | { | |
c8ce5710 L |
424 | if (!seg->used |
425 | && config.magic_demand_paged | |
426 | && (seg->value % config.maxpagesize) != 0) | |
427 | einfo (_("%P: warning: address of `%s' isn't multiple of maximum page size\n"), | |
428 | segment_name); | |
ba916c8a | 429 | seg->used = TRUE; |
7542af2a | 430 | new_rel_from_abs (seg->value); |
ba916c8a MM |
431 | break; |
432 | } | |
4ac0c898 | 433 | return; |
ba916c8a | 434 | } |
252b5132 | 435 | |
4ac0c898 AM |
436 | lhs = expld.result; |
437 | exp_fold_tree_1 (tree->binary.rhs); | |
438 | expld.result.valid_p &= lhs.valid_p; | |
439 | ||
440 | if (expld.result.valid_p) | |
441 | { | |
7542af2a | 442 | if (lhs.section != expld.result.section) |
252b5132 | 443 | { |
7542af2a AM |
444 | /* If the values are from different sections, and neither is |
445 | just a number, make both the source arguments absolute. */ | |
446 | if (expld.result.section != NULL | |
447 | && lhs.section != NULL) | |
448 | { | |
449 | make_abs (); | |
450 | lhs.value += lhs.section->vma; | |
9bc8bb33 | 451 | lhs.section = bfd_abs_section_ptr; |
7542af2a AM |
452 | } |
453 | ||
454 | /* If the rhs is just a number, keep the lhs section. */ | |
455 | else if (expld.result.section == NULL) | |
9bc8bb33 AM |
456 | { |
457 | expld.result.section = lhs.section; | |
458 | /* Make this NULL so that we know one of the operands | |
459 | was just a number, for later tests. */ | |
460 | lhs.section = NULL; | |
461 | } | |
4ac0c898 | 462 | } |
9bc8bb33 AM |
463 | /* At this point we know that both operands have the same |
464 | section, or at least one of them is a plain number. */ | |
252b5132 | 465 | |
4ac0c898 AM |
466 | switch (tree->type.node_code) |
467 | { | |
9bc8bb33 AM |
468 | /* Arithmetic operators, bitwise AND, bitwise OR and XOR |
469 | keep the section of one of their operands only when the | |
470 | other operand is a plain number. Losing the section when | |
471 | operating on two symbols, ie. a result of a plain number, | |
472 | is required for subtraction and XOR. It's justifiable | |
473 | for the other operations on the grounds that adding, | |
474 | multiplying etc. two section relative values does not | |
475 | really make sense unless they are just treated as | |
476 | numbers. | |
477 | The same argument could be made for many expressions | |
478 | involving one symbol and a number. For example, | |
479 | "1 << x" and "100 / x" probably should not be given the | |
480 | section of x. The trouble is that if we fuss about such | |
481 | things the rules become complex and it is onerous to | |
482 | document ld expression evaluation. */ | |
e9ee469a | 483 | #define BOP(x, y) \ |
7542af2a AM |
484 | case x: \ |
485 | expld.result.value = lhs.value y expld.result.value; \ | |
9bc8bb33 AM |
486 | if (expld.result.section == lhs.section) \ |
487 | expld.result.section = NULL; \ | |
7542af2a AM |
488 | break; |
489 | ||
9bc8bb33 AM |
490 | /* Comparison operators, logical AND, and logical OR always |
491 | return a plain number. */ | |
7542af2a AM |
492 | #define BOPN(x, y) \ |
493 | case x: \ | |
494 | expld.result.value = lhs.value y expld.result.value; \ | |
495 | expld.result.section = NULL; \ | |
496 | break; | |
e9ee469a | 497 | |
4ac0c898 AM |
498 | BOP ('+', +); |
499 | BOP ('*', *); | |
500 | BOP ('-', -); | |
501 | BOP (LSHIFT, <<); | |
502 | BOP (RSHIFT, >>); | |
4ac0c898 AM |
503 | BOP ('&', &); |
504 | BOP ('^', ^); | |
505 | BOP ('|', |); | |
7542af2a AM |
506 | BOPN (EQ, ==); |
507 | BOPN (NE, !=); | |
508 | BOPN ('<', <); | |
509 | BOPN ('>', >); | |
510 | BOPN (LE, <=); | |
511 | BOPN (GE, >=); | |
512 | BOPN (ANDAND, &&); | |
513 | BOPN (OROR, ||); | |
4ac0c898 | 514 | |
9bc8bb33 AM |
515 | case '%': |
516 | if (expld.result.value != 0) | |
517 | expld.result.value = ((bfd_signed_vma) lhs.value | |
518 | % (bfd_signed_vma) expld.result.value); | |
519 | else if (expld.phase != lang_mark_phase_enum) | |
dab69f68 | 520 | einfo (_("%F%S %% by zero\n"), tree->binary.rhs); |
9bc8bb33 AM |
521 | if (expld.result.section == lhs.section) |
522 | expld.result.section = NULL; | |
523 | break; | |
524 | ||
525 | case '/': | |
526 | if (expld.result.value != 0) | |
527 | expld.result.value = ((bfd_signed_vma) lhs.value | |
528 | / (bfd_signed_vma) expld.result.value); | |
529 | else if (expld.phase != lang_mark_phase_enum) | |
dab69f68 | 530 | einfo (_("%F%S / by zero\n"), tree->binary.rhs); |
9bc8bb33 AM |
531 | if (expld.result.section == lhs.section) |
532 | expld.result.section = NULL; | |
533 | break; | |
534 | ||
4ac0c898 AM |
535 | case MAX_K: |
536 | if (lhs.value > expld.result.value) | |
537 | expld.result.value = lhs.value; | |
538 | break; | |
252b5132 | 539 | |
4ac0c898 AM |
540 | case MIN_K: |
541 | if (lhs.value < expld.result.value) | |
542 | expld.result.value = lhs.value; | |
543 | break; | |
252b5132 | 544 | |
4ac0c898 AM |
545 | case ALIGN_K: |
546 | expld.result.value = align_n (lhs.value, expld.result.value); | |
547 | break; | |
c468c8bc | 548 | |
4ac0c898 AM |
549 | case DATA_SEGMENT_ALIGN: |
550 | expld.dataseg.relro = exp_dataseg_relro_start; | |
ea7c2e6c AM |
551 | if (expld.phase == lang_first_phase_enum |
552 | || expld.section != bfd_abs_section_ptr) | |
553 | expld.result.valid_p = FALSE; | |
554 | else | |
4ac0c898 AM |
555 | { |
556 | bfd_vma maxpage = lhs.value; | |
557 | bfd_vma commonpage = expld.result.value; | |
2d20f7bf | 558 | |
4ac0c898 AM |
559 | expld.result.value = align_n (expld.dot, maxpage); |
560 | if (expld.dataseg.phase == exp_dataseg_relro_adjust) | |
561 | expld.result.value = expld.dataseg.base; | |
ea7c2e6c AM |
562 | else if (expld.dataseg.phase == exp_dataseg_adjust) |
563 | { | |
564 | if (commonpage < maxpage) | |
565 | expld.result.value += ((expld.dot + commonpage - 1) | |
566 | & (maxpage - commonpage)); | |
567 | } | |
568 | else | |
4ac0c898 AM |
569 | { |
570 | expld.result.value += expld.dot & (maxpage - 1); | |
ea7c2e6c AM |
571 | if (expld.dataseg.phase == exp_dataseg_done) |
572 | { | |
573 | /* OK. */ | |
574 | } | |
575 | else if (expld.dataseg.phase == exp_dataseg_none) | |
2d20f7bf | 576 | { |
4ac0c898 | 577 | expld.dataseg.phase = exp_dataseg_align_seen; |
4ac0c898 AM |
578 | expld.dataseg.base = expld.result.value; |
579 | expld.dataseg.pagesize = commonpage; | |
580 | expld.dataseg.maxpagesize = maxpage; | |
581 | expld.dataseg.relro_end = 0; | |
2d20f7bf | 582 | } |
ea7c2e6c AM |
583 | else |
584 | expld.result.valid_p = FALSE; | |
2d20f7bf | 585 | } |
4ac0c898 | 586 | } |
4ac0c898 | 587 | break; |
e9ee469a | 588 | |
4ac0c898 | 589 | case DATA_SEGMENT_RELRO_END: |
6c1aca3e AM |
590 | /* Operands swapped! DATA_SEGMENT_RELRO_END(offset,exp) |
591 | has offset in expld.result and exp in lhs. */ | |
4ac0c898 | 592 | expld.dataseg.relro = exp_dataseg_relro_end; |
0e5fabeb | 593 | expld.dataseg.relro_offset = expld.result.value; |
ea7c2e6c AM |
594 | if (expld.phase == lang_first_phase_enum |
595 | || expld.section != bfd_abs_section_ptr) | |
596 | expld.result.valid_p = FALSE; | |
597 | else if (expld.dataseg.phase == exp_dataseg_align_seen | |
598 | || expld.dataseg.phase == exp_dataseg_adjust | |
599 | || expld.dataseg.phase == exp_dataseg_relro_adjust | |
600 | || expld.dataseg.phase == exp_dataseg_done) | |
4ac0c898 AM |
601 | { |
602 | if (expld.dataseg.phase == exp_dataseg_align_seen | |
603 | || expld.dataseg.phase == exp_dataseg_relro_adjust) | |
604 | expld.dataseg.relro_end = lhs.value + expld.result.value; | |
e9ee469a | 605 | |
4ac0c898 AM |
606 | if (expld.dataseg.phase == exp_dataseg_relro_adjust |
607 | && (expld.dataseg.relro_end | |
608 | & (expld.dataseg.pagesize - 1))) | |
609 | { | |
610 | expld.dataseg.relro_end += expld.dataseg.pagesize - 1; | |
611 | expld.dataseg.relro_end &= ~(expld.dataseg.pagesize - 1); | |
612 | expld.result.value = (expld.dataseg.relro_end | |
613 | - expld.result.value); | |
a4f5ad88 JJ |
614 | } |
615 | else | |
4ac0c898 | 616 | expld.result.value = lhs.value; |
a4f5ad88 | 617 | |
4ac0c898 AM |
618 | if (expld.dataseg.phase == exp_dataseg_align_seen) |
619 | expld.dataseg.phase = exp_dataseg_relro_seen; | |
252b5132 | 620 | } |
4ac0c898 AM |
621 | else |
622 | expld.result.valid_p = FALSE; | |
623 | break; | |
624 | ||
625 | default: | |
626 | FAIL (); | |
252b5132 | 627 | } |
252b5132 | 628 | } |
252b5132 RH |
629 | } |
630 | ||
e9ee469a AM |
631 | static void |
632 | fold_trinary (etree_type *tree) | |
0ae1cf52 | 633 | { |
e9ee469a AM |
634 | exp_fold_tree_1 (tree->trinary.cond); |
635 | if (expld.result.valid_p) | |
636 | exp_fold_tree_1 (expld.result.value | |
637 | ? tree->trinary.lhs | |
638 | : tree->trinary.rhs); | |
0ae1cf52 AM |
639 | } |
640 | ||
e9ee469a AM |
641 | static void |
642 | fold_name (etree_type *tree) | |
252b5132 | 643 | { |
e9ee469a | 644 | memset (&expld.result, 0, sizeof (expld.result)); |
c468c8bc | 645 | |
4de2d33d | 646 | switch (tree->type.node_code) |
8c95a62e KH |
647 | { |
648 | case SIZEOF_HEADERS: | |
e9ee469a AM |
649 | if (expld.phase != lang_first_phase_enum) |
650 | { | |
651 | bfd_vma hdr_size = 0; | |
652 | /* Don't find the real header size if only marking sections; | |
653 | The bfd function may cache incorrect data. */ | |
654 | if (expld.phase != lang_mark_phase_enum) | |
f13a99db | 655 | hdr_size = bfd_sizeof_headers (link_info.output_bfd, &link_info); |
7542af2a | 656 | new_number (hdr_size); |
e9ee469a | 657 | } |
8c95a62e | 658 | break; |
67469e1f | 659 | |
8c95a62e | 660 | case DEFINED: |
fa72205c | 661 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
662 | { |
663 | struct bfd_link_hash_entry *h; | |
18d6a79d | 664 | struct definedness_hash_entry *def; |
8c95a62e | 665 | |
f13a99db AM |
666 | h = bfd_wrapped_link_hash_lookup (link_info.output_bfd, |
667 | &link_info, | |
8c95a62e | 668 | tree->name.name, |
b34976b6 | 669 | FALSE, FALSE, TRUE); |
7542af2a AM |
670 | new_number (h != NULL |
671 | && (h->type == bfd_link_hash_defined | |
672 | || h->type == bfd_link_hash_defweak | |
673 | || h->type == bfd_link_hash_common) | |
18d6a79d | 674 | && ((def = symbol_defined (tree->name.name)) == NULL |
fa72205c AM |
675 | || def->by_object |
676 | || def->iteration == (lang_statement_iteration & 1))); | |
8c95a62e KH |
677 | } |
678 | break; | |
67469e1f | 679 | |
8c95a62e | 680 | case NAME: |
4194268f AM |
681 | if (expld.assign_name != NULL |
682 | && strcmp (expld.assign_name, tree->name.name) == 0) | |
fa72205c AM |
683 | { |
684 | /* Self-assignment is only allowed for absolute symbols | |
685 | defined in a linker script. */ | |
686 | struct bfd_link_hash_entry *h; | |
18d6a79d | 687 | struct definedness_hash_entry *def; |
fa72205c AM |
688 | |
689 | h = bfd_wrapped_link_hash_lookup (link_info.output_bfd, | |
690 | &link_info, | |
691 | tree->name.name, | |
692 | FALSE, FALSE, TRUE); | |
693 | if (!(h != NULL | |
694 | && (h->type == bfd_link_hash_defined | |
695 | || h->type == bfd_link_hash_defweak) | |
696 | && h->u.def.section == bfd_abs_section_ptr | |
18d6a79d | 697 | && (def = symbol_defined (tree->name.name)) != NULL |
fa72205c AM |
698 | && def->iteration == (lang_statement_iteration & 1))) |
699 | expld.assign_name = NULL; | |
700 | } | |
e9ee469a AM |
701 | if (expld.phase == lang_first_phase_enum) |
702 | ; | |
703 | else if (tree->name.name[0] == '.' && tree->name.name[1] == 0) | |
704 | new_rel_from_abs (expld.dot); | |
705 | else | |
8c95a62e KH |
706 | { |
707 | struct bfd_link_hash_entry *h; | |
708 | ||
f13a99db AM |
709 | h = bfd_wrapped_link_hash_lookup (link_info.output_bfd, |
710 | &link_info, | |
8c95a62e | 711 | tree->name.name, |
1b493742 NS |
712 | TRUE, FALSE, TRUE); |
713 | if (!h) | |
714 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
715 | else if (h->type == bfd_link_hash_defined | |
716 | || h->type == bfd_link_hash_defweak) | |
8c95a62e | 717 | { |
7542af2a | 718 | asection *output_section; |
8c95a62e | 719 | |
7542af2a AM |
720 | output_section = h->u.def.section->output_section; |
721 | if (output_section == NULL) | |
722 | { | |
2aa9aad9 NC |
723 | if (expld.phase == lang_mark_phase_enum) |
724 | new_rel (h->u.def.value, h->u.def.section); | |
725 | else | |
7542af2a AM |
726 | einfo (_("%X%S: unresolvable symbol `%s'" |
727 | " referenced in expression\n"), | |
dab69f68 | 728 | tree, tree->name.name); |
8c95a62e | 729 | } |
5c3049d2 AM |
730 | else if (output_section == bfd_abs_section_ptr |
731 | && (expld.section != bfd_abs_section_ptr | |
01554a74 | 732 | || config.sane_expr)) |
abf4be64 | 733 | new_number (h->u.def.value + h->u.def.section->output_offset); |
7542af2a AM |
734 | else |
735 | new_rel (h->u.def.value + h->u.def.section->output_offset, | |
736 | output_section); | |
8c95a62e | 737 | } |
e9ee469a | 738 | else if (expld.phase == lang_final_phase_enum |
ec8460b5 AM |
739 | || (expld.phase != lang_mark_phase_enum |
740 | && expld.assigning_to_dot)) | |
dab69f68 AM |
741 | einfo (_("%F%S: undefined symbol `%s'" |
742 | " referenced in expression\n"), | |
743 | tree, tree->name.name); | |
1b493742 NS |
744 | else if (h->type == bfd_link_hash_new) |
745 | { | |
746 | h->type = bfd_link_hash_undefined; | |
747 | h->u.undef.abfd = NULL; | |
3eda52aa | 748 | if (h->u.undef.next == NULL && h != link_info.hash->undefs_tail) |
a010d60f | 749 | bfd_link_add_undef (link_info.hash, h); |
1b493742 | 750 | } |
8c95a62e KH |
751 | } |
752 | break; | |
753 | ||
754 | case ADDR: | |
e9ee469a | 755 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
756 | { |
757 | lang_output_section_statement_type *os; | |
758 | ||
759 | os = lang_output_section_find (tree->name.name); | |
cc3e2771 NS |
760 | if (os == NULL) |
761 | { | |
762 | if (expld.phase == lang_final_phase_enum) | |
dab69f68 AM |
763 | einfo (_("%F%S: undefined section `%s'" |
764 | " referenced in expression\n"), | |
765 | tree, tree->name.name); | |
cc3e2771 NS |
766 | } |
767 | else if (os->processed_vma) | |
5942515f | 768 | new_rel (0, os->bfd_section); |
8c95a62e | 769 | } |
8c95a62e KH |
770 | break; |
771 | ||
772 | case LOADADDR: | |
e9ee469a | 773 | if (expld.phase != lang_first_phase_enum) |
8c95a62e KH |
774 | { |
775 | lang_output_section_statement_type *os; | |
776 | ||
777 | os = lang_output_section_find (tree->name.name); | |
cc3e2771 NS |
778 | if (os == NULL) |
779 | { | |
780 | if (expld.phase == lang_final_phase_enum) | |
dab69f68 AM |
781 | einfo (_("%F%S: undefined section `%s'" |
782 | " referenced in expression\n"), | |
783 | tree, tree->name.name); | |
cc3e2771 NS |
784 | } |
785 | else if (os->processed_lma) | |
1b493742 | 786 | { |
e9ee469a | 787 | if (os->load_base == NULL) |
3e23777d | 788 | new_abs (os->bfd_section->lma); |
e9ee469a | 789 | else |
67469e1f AM |
790 | { |
791 | exp_fold_tree_1 (os->load_base); | |
819da74e AM |
792 | if (expld.result.valid_p) |
793 | make_abs (); | |
67469e1f | 794 | } |
1b493742 | 795 | } |
8c95a62e | 796 | } |
8c95a62e KH |
797 | break; |
798 | ||
799 | case SIZEOF: | |
362c1d1a | 800 | case ALIGNOF: |
e9ee469a | 801 | if (expld.phase != lang_first_phase_enum) |
8c95a62e | 802 | { |
8c95a62e KH |
803 | lang_output_section_statement_type *os; |
804 | ||
805 | os = lang_output_section_find (tree->name.name); | |
5397b1fe | 806 | if (os == NULL) |
cc3e2771 NS |
807 | { |
808 | if (expld.phase == lang_final_phase_enum) | |
dab69f68 AM |
809 | einfo (_("%F%S: undefined section `%s'" |
810 | " referenced in expression\n"), | |
811 | tree, tree->name.name); | |
7542af2a | 812 | new_number (0); |
cc3e2771 | 813 | } |
17d6eea5 | 814 | else if (os->bfd_section != NULL) |
362c1d1a NS |
815 | { |
816 | bfd_vma val; | |
817 | ||
818 | if (tree->type.node_code == SIZEOF) | |
f13a99db AM |
819 | val = (os->bfd_section->size |
820 | / bfd_octets_per_byte (link_info.output_bfd)); | |
362c1d1a NS |
821 | else |
822 | val = (bfd_vma)1 << os->bfd_section->alignment_power; | |
e4492aa0 | 823 | |
7542af2a | 824 | new_number (val); |
362c1d1a | 825 | } |
17d6eea5 L |
826 | else |
827 | new_number (0); | |
8c95a62e | 828 | } |
8c95a62e KH |
829 | break; |
830 | ||
3ec57632 NC |
831 | case LENGTH: |
832 | { | |
cc9ad334 SKS |
833 | if (expld.phase != lang_first_phase_enum) |
834 | { | |
835 | lang_memory_region_type *mem; | |
836 | ||
837 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
838 | if (mem != NULL) | |
839 | new_number (mem->length); | |
840 | else | |
841 | einfo (_("%F%S: undefined MEMORY region `%s'" | |
842 | " referenced in expression\n"), | |
843 | tree, tree->name.name); | |
844 | } | |
3ec57632 NC |
845 | } |
846 | break; | |
847 | ||
848 | case ORIGIN: | |
7542af2a AM |
849 | if (expld.phase != lang_first_phase_enum) |
850 | { | |
851 | lang_memory_region_type *mem; | |
e4492aa0 L |
852 | |
853 | mem = lang_memory_region_lookup (tree->name.name, FALSE); | |
854 | if (mem != NULL) | |
7542af2a | 855 | new_rel_from_abs (mem->origin); |
e4492aa0 | 856 | else |
7542af2a | 857 | einfo (_("%F%S: undefined MEMORY region `%s'" |
dab69f68 AM |
858 | " referenced in expression\n"), |
859 | tree, tree->name.name); | |
7542af2a | 860 | } |
3ec57632 NC |
861 | break; |
862 | ||
24718e3b L |
863 | case CONSTANT: |
864 | if (strcmp (tree->name.name, "MAXPAGESIZE") == 0) | |
7542af2a | 865 | new_number (config.maxpagesize); |
24718e3b | 866 | else if (strcmp (tree->name.name, "COMMONPAGESIZE") == 0) |
7542af2a | 867 | new_number (config.commonpagesize); |
24718e3b L |
868 | else |
869 | einfo (_("%F%S: unknown constant `%s' referenced in expression\n"), | |
dab69f68 | 870 | tree, tree->name.name); |
24718e3b L |
871 | break; |
872 | ||
8c95a62e KH |
873 | default: |
874 | FAIL (); | |
875 | break; | |
876 | } | |
252b5132 | 877 | } |
8c95a62e | 878 | |
2edab91c | 879 | /* Return true if TREE is '.'. */ |
995da1ff | 880 | |
2edab91c AM |
881 | static bfd_boolean |
882 | is_dot (const etree_type *tree) | |
883 | { | |
884 | return (tree->type.node_class == etree_name | |
885 | && tree->type.node_code == NAME | |
886 | && tree->name.name[0] == '.' | |
887 | && tree->name.name[1] == 0); | |
888 | } | |
889 | ||
890 | /* Return true if TREE is a constant equal to VAL. */ | |
891 | ||
892 | static bfd_boolean | |
893 | is_value (const etree_type *tree, bfd_vma val) | |
894 | { | |
895 | return (tree->type.node_class == etree_value | |
896 | && tree->value.value == val); | |
897 | } | |
898 | ||
899 | /* Return true if TREE is an absolute symbol equal to VAL defined in | |
900 | a linker script. */ | |
901 | ||
902 | static bfd_boolean | |
903 | is_sym_value (const etree_type *tree, bfd_vma val) | |
904 | { | |
905 | struct bfd_link_hash_entry *h; | |
18d6a79d | 906 | struct definedness_hash_entry *def; |
2edab91c AM |
907 | |
908 | return (tree->type.node_class == etree_name | |
909 | && tree->type.node_code == NAME | |
18d6a79d | 910 | && (def = symbol_defined (tree->name.name)) != NULL |
2edab91c AM |
911 | && def->by_script |
912 | && def->iteration == (lang_statement_iteration & 1) | |
913 | && (h = bfd_wrapped_link_hash_lookup (link_info.output_bfd, | |
914 | &link_info, | |
915 | tree->name.name, | |
916 | FALSE, FALSE, TRUE)) != NULL | |
917 | && h->type == bfd_link_hash_defined | |
918 | && h->u.def.section == bfd_abs_section_ptr | |
919 | && h->u.def.value == val); | |
920 | } | |
921 | ||
922 | /* Return true if TREE is ". != 0". */ | |
923 | ||
924 | static bfd_boolean | |
925 | is_dot_ne_0 (const etree_type *tree) | |
926 | { | |
927 | return (tree->type.node_class == etree_binary | |
928 | && tree->type.node_code == NE | |
929 | && is_dot (tree->binary.lhs) | |
930 | && is_value (tree->binary.rhs, 0)); | |
931 | } | |
932 | ||
933 | /* Return true if TREE is ". = . + 0" or ". = . + sym" where sym is an | |
934 | absolute constant with value 0 defined in a linker script. */ | |
935 | ||
936 | static bfd_boolean | |
937 | is_dot_plus_0 (const etree_type *tree) | |
938 | { | |
939 | return (tree->type.node_class == etree_binary | |
940 | && tree->type.node_code == '+' | |
941 | && is_dot (tree->binary.lhs) | |
942 | && (is_value (tree->binary.rhs, 0) | |
943 | || is_sym_value (tree->binary.rhs, 0))); | |
944 | } | |
945 | ||
e0a3af22 | 946 | /* Return true if TREE is "ALIGN (. != 0 ? some_expression : 1)". */ |
2edab91c AM |
947 | |
948 | static bfd_boolean | |
949 | is_align_conditional (const etree_type *tree) | |
950 | { | |
e0a3af22 AM |
951 | if (tree->type.node_class == etree_unary |
952 | && tree->type.node_code == ALIGN_K) | |
953 | { | |
954 | tree = tree->unary.child; | |
955 | return (tree->type.node_class == etree_trinary | |
956 | && is_dot_ne_0 (tree->trinary.cond) | |
957 | && is_value (tree->trinary.rhs, 1)); | |
958 | } | |
959 | return 0; | |
2edab91c AM |
960 | } |
961 | ||
e9ee469a AM |
962 | static void |
963 | exp_fold_tree_1 (etree_type *tree) | |
252b5132 | 964 | { |
252b5132 RH |
965 | if (tree == NULL) |
966 | { | |
e9ee469a AM |
967 | memset (&expld.result, 0, sizeof (expld.result)); |
968 | return; | |
252b5132 RH |
969 | } |
970 | ||
4de2d33d | 971 | switch (tree->type.node_class) |
252b5132 RH |
972 | { |
973 | case etree_value: | |
5c3049d2 | 974 | if (expld.section == bfd_abs_section_ptr |
01554a74 | 975 | && !config.sane_expr) |
5c3049d2 AM |
976 | new_abs (tree->value.value); |
977 | else | |
978 | new_number (tree->value.value); | |
5942515f | 979 | expld.result.str = tree->value.str; |
252b5132 RH |
980 | break; |
981 | ||
982 | case etree_rel: | |
e9ee469a AM |
983 | if (expld.phase != lang_first_phase_enum) |
984 | { | |
985 | asection *output_section = tree->rel.section->output_section; | |
986 | new_rel (tree->rel.value + tree->rel.section->output_offset, | |
5942515f | 987 | output_section); |
e9ee469a | 988 | } |
252b5132 | 989 | else |
e9ee469a | 990 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
991 | break; |
992 | ||
993 | case etree_assert: | |
e9ee469a | 994 | exp_fold_tree_1 (tree->assert_s.child); |
5397b1fe AM |
995 | if (expld.phase == lang_final_phase_enum && !expld.result.value) |
996 | einfo ("%X%P: %s\n", tree->assert_s.message); | |
252b5132 RH |
997 | break; |
998 | ||
999 | case etree_unary: | |
e9ee469a | 1000 | fold_unary (tree); |
252b5132 RH |
1001 | break; |
1002 | ||
1003 | case etree_binary: | |
e9ee469a | 1004 | fold_binary (tree); |
252b5132 | 1005 | break; |
0ae1cf52 AM |
1006 | |
1007 | case etree_trinary: | |
e9ee469a | 1008 | fold_trinary (tree); |
0ae1cf52 | 1009 | break; |
252b5132 RH |
1010 | |
1011 | case etree_assign: | |
1012 | case etree_provide: | |
b46a87b1 | 1013 | case etree_provided: |
252b5132 RH |
1014 | if (tree->assign.dst[0] == '.' && tree->assign.dst[1] == 0) |
1015 | { | |
b46a87b1 | 1016 | if (tree->type.node_class != etree_assign) |
dab69f68 AM |
1017 | einfo (_("%F%S can not PROVIDE assignment to" |
1018 | " location counter\n"), tree); | |
ec8460b5 | 1019 | if (expld.phase != lang_first_phase_enum) |
252b5132 | 1020 | { |
fbbb9ac5 | 1021 | /* Notify the folder that this is an assignment to dot. */ |
e9ee469a AM |
1022 | expld.assigning_to_dot = TRUE; |
1023 | exp_fold_tree_1 (tree->assign.src); | |
1024 | expld.assigning_to_dot = FALSE; | |
1025 | ||
e0a3af22 AM |
1026 | /* If we are assigning to dot inside an output section |
1027 | arrange to keep the section, except for certain | |
1028 | expressions that evaluate to zero. We ignore . = 0, | |
1029 | . = . + 0, and . = ALIGN (. != 0 ? expr : 1). | |
1030 | We can't ignore all expressions that evaluate to zero | |
1031 | because an otherwise empty section might have padding | |
1032 | added by an alignment expression that changes with | |
1033 | relaxation. Such a section might have zero size | |
1034 | before relaxation and so be stripped incorrectly. */ | |
1035 | if (expld.phase == lang_mark_phase_enum | |
1036 | && expld.section != bfd_abs_section_ptr | |
1037 | && !(expld.result.valid_p | |
1038 | && expld.result.value == 0 | |
1039 | && (is_value (tree->assign.src, 0) | |
1040 | || is_sym_value (tree->assign.src, 0) | |
1041 | || is_dot_plus_0 (tree->assign.src) | |
1042 | || is_align_conditional (tree->assign.src)))) | |
1043 | expld.section->flags |= SEC_KEEP; | |
1044 | ||
e9ee469a AM |
1045 | if (!expld.result.valid_p) |
1046 | { | |
1047 | if (expld.phase != lang_mark_phase_enum) | |
dab69f68 AM |
1048 | einfo (_("%F%S invalid assignment to" |
1049 | " location counter\n"), tree); | |
e9ee469a AM |
1050 | } |
1051 | else if (expld.dotp == NULL) | |
1052 | einfo (_("%F%S assignment to location counter" | |
ec8460b5 AM |
1053 | " invalid outside of SECTIONS\n"), tree); |
1054 | ||
1055 | /* After allocation, assignment to dot should not be | |
1056 | done inside an output section since allocation adds a | |
1057 | padding statement that effectively duplicates the | |
1058 | assignment. */ | |
1059 | else if (expld.phase <= lang_allocating_phase_enum | |
1060 | || expld.section == bfd_abs_section_ptr) | |
252b5132 | 1061 | { |
e9ee469a AM |
1062 | bfd_vma nextdot; |
1063 | ||
7542af2a AM |
1064 | nextdot = expld.result.value; |
1065 | if (expld.result.section != NULL) | |
1066 | nextdot += expld.result.section->vma; | |
1067 | else | |
1068 | nextdot += expld.section->vma; | |
e9ee469a AM |
1069 | if (nextdot < expld.dot |
1070 | && expld.section != bfd_abs_section_ptr) | |
1071 | einfo (_("%F%S cannot move location counter backwards" | |
dab69f68 AM |
1072 | " (from %V to %V)\n"), |
1073 | tree, expld.dot, nextdot); | |
252b5132 RH |
1074 | else |
1075 | { | |
e9ee469a AM |
1076 | expld.dot = nextdot; |
1077 | *expld.dotp = nextdot; | |
252b5132 RH |
1078 | } |
1079 | } | |
1080 | } | |
8b3d8fa8 | 1081 | else |
e9ee469a | 1082 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
1083 | } |
1084 | else | |
1085 | { | |
e9ee469a | 1086 | struct bfd_link_hash_entry *h = NULL; |
252b5132 | 1087 | |
e9ee469a AM |
1088 | if (tree->type.node_class == etree_provide) |
1089 | { | |
252b5132 | 1090 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
e9ee469a AM |
1091 | FALSE, FALSE, TRUE); |
1092 | if (h == NULL | |
4cc2bf08 AM |
1093 | || !(h->type == bfd_link_hash_new |
1094 | || h->type == bfd_link_hash_undefined | |
12b2843a | 1095 | || h->linker_def)) |
e9ee469a | 1096 | { |
4cc2bf08 AM |
1097 | /* Do nothing. The symbol was never referenced, or |
1098 | was defined in some object file. Undefined weak | |
1099 | symbols stay undefined. */ | |
e9ee469a AM |
1100 | break; |
1101 | } | |
1102 | } | |
1103 | ||
4194268f | 1104 | expld.assign_name = tree->assign.dst; |
e9ee469a | 1105 | exp_fold_tree_1 (tree->assign.src); |
4194268f AM |
1106 | /* expld.assign_name remaining equal to tree->assign.dst |
1107 | below indicates the evaluation of tree->assign.src did | |
1108 | not use the value of tree->assign.dst. We don't allow | |
1109 | self assignment until the final phase for two reasons: | |
1110 | 1) Expressions are evaluated multiple times. With | |
1111 | relaxation, the number of times may vary. | |
1112 | 2) Section relative symbol values cannot be correctly | |
1113 | converted to absolute values, as is required by many | |
1114 | expressions, until final section sizing is complete. */ | |
1115 | if ((expld.result.valid_p | |
1116 | && (expld.phase == lang_final_phase_enum | |
1117 | || expld.assign_name != NULL)) | |
2aa9aad9 | 1118 | || (expld.phase <= lang_mark_phase_enum |
01554a74 | 1119 | && tree->type.node_class == etree_assign |
eb8476a6 | 1120 | && tree->assign.defsym)) |
e9ee469a | 1121 | { |
1579bae1 | 1122 | if (h == NULL) |
67010b46 | 1123 | { |
e9ee469a AM |
1124 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, |
1125 | TRUE, FALSE, TRUE); | |
1126 | if (h == NULL) | |
67010b46 NC |
1127 | einfo (_("%P%F:%s: hash creation failed\n"), |
1128 | tree->assign.dst); | |
1129 | } | |
e9ee469a | 1130 | |
7542af2a AM |
1131 | if (expld.result.section == NULL) |
1132 | expld.result.section = expld.section; | |
422f1c65 AM |
1133 | if (!update_definedness (tree->assign.dst, h) && 0) |
1134 | { | |
1135 | /* Symbol was already defined. For now this error | |
1136 | is disabled because it causes failures in the ld | |
1137 | testsuite: ld-elf/var1, ld-scripts/defined5, and | |
1138 | ld-scripts/pr14962. Some of these no doubt | |
1139 | reflect scripts used in the wild. */ | |
1140 | (*link_info.callbacks->multiple_definition) | |
1141 | (&link_info, h, link_info.output_bfd, | |
1142 | expld.result.section, expld.result.value); | |
1143 | } | |
1144 | h->type = bfd_link_hash_defined; | |
1145 | h->u.def.value = expld.result.value; | |
e9ee469a AM |
1146 | h->u.def.section = expld.result.section; |
1147 | if (tree->type.node_class == etree_provide) | |
1148 | tree->type.node_class = etree_provided; | |
1338dd10 PB |
1149 | |
1150 | /* Copy the symbol type if this is a simple assignment of | |
422f1c65 | 1151 | one symbol to another. This could be more general |
f37a7048 | 1152 | (e.g. a ?: operator with NAMEs in each branch). */ |
1338dd10 PB |
1153 | if (tree->assign.src->type.node_class == etree_name) |
1154 | { | |
1155 | struct bfd_link_hash_entry *hsrc; | |
1156 | ||
1157 | hsrc = bfd_link_hash_lookup (link_info.hash, | |
1158 | tree->assign.src->name.name, | |
1159 | FALSE, FALSE, TRUE); | |
1160 | if (hsrc) | |
1161 | bfd_copy_link_hash_symbol_type (link_info.output_bfd, h, | |
1162 | hsrc); | |
1163 | } | |
252b5132 | 1164 | } |
e092cb30 AM |
1165 | else if (expld.phase == lang_final_phase_enum) |
1166 | { | |
1167 | h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst, | |
1168 | FALSE, FALSE, TRUE); | |
1169 | if (h != NULL | |
1170 | && h->type == bfd_link_hash_new) | |
1171 | h->type = bfd_link_hash_undefined; | |
1172 | } | |
4194268f | 1173 | expld.assign_name = NULL; |
252b5132 RH |
1174 | } |
1175 | break; | |
1176 | ||
1177 | case etree_name: | |
e9ee469a | 1178 | fold_name (tree); |
252b5132 RH |
1179 | break; |
1180 | ||
1181 | default: | |
1182 | FAIL (); | |
e9ee469a | 1183 | memset (&expld.result, 0, sizeof (expld.result)); |
252b5132 RH |
1184 | break; |
1185 | } | |
252b5132 RH |
1186 | } |
1187 | ||
e9ee469a AM |
1188 | void |
1189 | exp_fold_tree (etree_type *tree, asection *current_section, bfd_vma *dotp) | |
75ff4589 | 1190 | { |
e9ee469a AM |
1191 | expld.dot = *dotp; |
1192 | expld.dotp = dotp; | |
1193 | expld.section = current_section; | |
1194 | exp_fold_tree_1 (tree); | |
75ff4589 L |
1195 | } |
1196 | ||
e759c116 | 1197 | void |
e9ee469a | 1198 | exp_fold_tree_no_dot (etree_type *tree) |
252b5132 | 1199 | { |
e9ee469a AM |
1200 | expld.dot = 0; |
1201 | expld.dotp = NULL; | |
1202 | expld.section = bfd_abs_section_ptr; | |
1203 | exp_fold_tree_1 (tree); | |
252b5132 RH |
1204 | } |
1205 | ||
1206 | etree_type * | |
1579bae1 | 1207 | exp_binop (int code, etree_type *lhs, etree_type *rhs) |
252b5132 | 1208 | { |
d3ce72d0 | 1209 | etree_type value, *new_e; |
252b5132 RH |
1210 | |
1211 | value.type.node_code = code; | |
dab69f68 | 1212 | value.type.filename = lhs->type.filename; |
f856040a | 1213 | value.type.lineno = lhs->type.lineno; |
252b5132 RH |
1214 | value.binary.lhs = lhs; |
1215 | value.binary.rhs = rhs; | |
1216 | value.type.node_class = etree_binary; | |
e9ee469a AM |
1217 | exp_fold_tree_no_dot (&value); |
1218 | if (expld.result.valid_p) | |
1219 | return exp_intop (expld.result.value); | |
1220 | ||
d3ce72d0 NC |
1221 | new_e = (etree_type *) stat_alloc (sizeof (new_e->binary)); |
1222 | memcpy (new_e, &value, sizeof (new_e->binary)); | |
1223 | return new_e; | |
252b5132 RH |
1224 | } |
1225 | ||
1226 | etree_type * | |
1579bae1 | 1227 | exp_trinop (int code, etree_type *cond, etree_type *lhs, etree_type *rhs) |
252b5132 | 1228 | { |
d3ce72d0 | 1229 | etree_type value, *new_e; |
e9ee469a | 1230 | |
252b5132 | 1231 | value.type.node_code = code; |
dab69f68 AM |
1232 | value.type.filename = cond->type.filename; |
1233 | value.type.lineno = cond->type.lineno; | |
252b5132 RH |
1234 | value.trinary.lhs = lhs; |
1235 | value.trinary.cond = cond; | |
1236 | value.trinary.rhs = rhs; | |
1237 | value.type.node_class = etree_trinary; | |
e9ee469a AM |
1238 | exp_fold_tree_no_dot (&value); |
1239 | if (expld.result.valid_p) | |
1240 | return exp_intop (expld.result.value); | |
c7d701b0 | 1241 | |
d3ce72d0 NC |
1242 | new_e = (etree_type *) stat_alloc (sizeof (new_e->trinary)); |
1243 | memcpy (new_e, &value, sizeof (new_e->trinary)); | |
1244 | return new_e; | |
252b5132 RH |
1245 | } |
1246 | ||
252b5132 | 1247 | etree_type * |
1579bae1 | 1248 | exp_unop (int code, etree_type *child) |
252b5132 | 1249 | { |
d3ce72d0 | 1250 | etree_type value, *new_e; |
252b5132 | 1251 | |
252b5132 | 1252 | value.unary.type.node_code = code; |
dab69f68 | 1253 | value.unary.type.filename = child->type.filename; |
f856040a | 1254 | value.unary.type.lineno = child->type.lineno; |
252b5132 RH |
1255 | value.unary.child = child; |
1256 | value.unary.type.node_class = etree_unary; | |
e9ee469a AM |
1257 | exp_fold_tree_no_dot (&value); |
1258 | if (expld.result.valid_p) | |
1259 | return exp_intop (expld.result.value); | |
c7d701b0 | 1260 | |
d3ce72d0 NC |
1261 | new_e = (etree_type *) stat_alloc (sizeof (new_e->unary)); |
1262 | memcpy (new_e, &value, sizeof (new_e->unary)); | |
1263 | return new_e; | |
252b5132 RH |
1264 | } |
1265 | ||
252b5132 | 1266 | etree_type * |
1579bae1 | 1267 | exp_nameop (int code, const char *name) |
252b5132 | 1268 | { |
d3ce72d0 | 1269 | etree_type value, *new_e; |
e9ee469a | 1270 | |
252b5132 | 1271 | value.name.type.node_code = code; |
dab69f68 | 1272 | value.name.type.filename = ldlex_filename (); |
f856040a | 1273 | value.name.type.lineno = lineno; |
252b5132 RH |
1274 | value.name.name = name; |
1275 | value.name.type.node_class = etree_name; | |
1276 | ||
e9ee469a AM |
1277 | exp_fold_tree_no_dot (&value); |
1278 | if (expld.result.valid_p) | |
1279 | return exp_intop (expld.result.value); | |
c7d701b0 | 1280 | |
d3ce72d0 NC |
1281 | new_e = (etree_type *) stat_alloc (sizeof (new_e->name)); |
1282 | memcpy (new_e, &value, sizeof (new_e->name)); | |
1283 | return new_e; | |
252b5132 RH |
1284 | |
1285 | } | |
1286 | ||
2e57b2af AM |
1287 | static etree_type * |
1288 | exp_assop (const char *dst, | |
1289 | etree_type *src, | |
1290 | enum node_tree_enum class, | |
eb8476a6 | 1291 | bfd_boolean defsym, |
2e57b2af | 1292 | bfd_boolean hidden) |
252b5132 RH |
1293 | { |
1294 | etree_type *n; | |
1295 | ||
1e9cc1c2 | 1296 | n = (etree_type *) stat_alloc (sizeof (n->assign)); |
252b5132 | 1297 | n->assign.type.node_code = '='; |
dab69f68 | 1298 | n->assign.type.filename = src->type.filename; |
f856040a | 1299 | n->assign.type.lineno = src->type.lineno; |
2e57b2af | 1300 | n->assign.type.node_class = class; |
252b5132 RH |
1301 | n->assign.src = src; |
1302 | n->assign.dst = dst; | |
eb8476a6 | 1303 | n->assign.defsym = defsym; |
7af8e998 | 1304 | n->assign.hidden = hidden; |
252b5132 RH |
1305 | return n; |
1306 | } | |
1307 | ||
eb8476a6 MR |
1308 | /* Handle linker script assignments and HIDDEN. */ |
1309 | ||
2e57b2af | 1310 | etree_type * |
eb8476a6 | 1311 | exp_assign (const char *dst, etree_type *src, bfd_boolean hidden) |
2e57b2af | 1312 | { |
eb8476a6 | 1313 | return exp_assop (dst, src, etree_assign, FALSE, hidden); |
2e57b2af AM |
1314 | } |
1315 | ||
eb8476a6 MR |
1316 | /* Handle --defsym command-line option. */ |
1317 | ||
2e57b2af AM |
1318 | etree_type * |
1319 | exp_defsym (const char *dst, etree_type *src) | |
1320 | { | |
eb8476a6 | 1321 | return exp_assop (dst, src, etree_assign, TRUE, FALSE); |
2e57b2af AM |
1322 | } |
1323 | ||
1324 | /* Handle PROVIDE. */ | |
1325 | ||
1326 | etree_type * | |
1327 | exp_provide (const char *dst, etree_type *src, bfd_boolean hidden) | |
1328 | { | |
eb8476a6 | 1329 | return exp_assop (dst, src, etree_provide, FALSE, hidden); |
2e57b2af AM |
1330 | } |
1331 | ||
252b5132 RH |
1332 | /* Handle ASSERT. */ |
1333 | ||
1334 | etree_type * | |
1579bae1 | 1335 | exp_assert (etree_type *exp, const char *message) |
252b5132 RH |
1336 | { |
1337 | etree_type *n; | |
1338 | ||
1e9cc1c2 | 1339 | n = (etree_type *) stat_alloc (sizeof (n->assert_s)); |
252b5132 | 1340 | n->assert_s.type.node_code = '!'; |
dab69f68 | 1341 | n->assert_s.type.filename = exp->type.filename; |
f856040a | 1342 | n->assert_s.type.lineno = exp->type.lineno; |
252b5132 RH |
1343 | n->assert_s.type.node_class = etree_assert; |
1344 | n->assert_s.child = exp; | |
1345 | n->assert_s.message = message; | |
1346 | return n; | |
1347 | } | |
1348 | ||
4de2d33d | 1349 | void |
1579bae1 | 1350 | exp_print_tree (etree_type *tree) |
252b5132 | 1351 | { |
ae78bbeb AM |
1352 | bfd_boolean function_like; |
1353 | ||
c7d701b0 NC |
1354 | if (config.map_file == NULL) |
1355 | config.map_file = stderr; | |
b7a26f91 | 1356 | |
c7d701b0 NC |
1357 | if (tree == NULL) |
1358 | { | |
1359 | minfo ("NULL TREE\n"); | |
1360 | return; | |
1361 | } | |
b7a26f91 | 1362 | |
8c95a62e KH |
1363 | switch (tree->type.node_class) |
1364 | { | |
1365 | case etree_value: | |
1366 | minfo ("0x%v", tree->value.value); | |
1367 | return; | |
1368 | case etree_rel: | |
1369 | if (tree->rel.section->owner != NULL) | |
1370 | minfo ("%B:", tree->rel.section->owner); | |
1371 | minfo ("%s+0x%v", tree->rel.section->name, tree->rel.value); | |
1372 | return; | |
1373 | case etree_assign: | |
ae78bbeb | 1374 | fputs (tree->assign.dst, config.map_file); |
b34976b6 | 1375 | exp_print_token (tree->type.node_code, TRUE); |
8c95a62e KH |
1376 | exp_print_tree (tree->assign.src); |
1377 | break; | |
1378 | case etree_provide: | |
b46a87b1 | 1379 | case etree_provided: |
8c95a62e KH |
1380 | fprintf (config.map_file, "PROVIDE (%s, ", tree->assign.dst); |
1381 | exp_print_tree (tree->assign.src); | |
ae78bbeb | 1382 | fputc (')', config.map_file); |
8c95a62e KH |
1383 | break; |
1384 | case etree_binary: | |
ae78bbeb AM |
1385 | function_like = FALSE; |
1386 | switch (tree->type.node_code) | |
1387 | { | |
1388 | case MAX_K: | |
1389 | case MIN_K: | |
1390 | case ALIGN_K: | |
1391 | case DATA_SEGMENT_ALIGN: | |
1392 | case DATA_SEGMENT_RELRO_END: | |
1393 | function_like = TRUE; | |
67baf8c4 TG |
1394 | break; |
1395 | case SEGMENT_START: | |
1396 | /* Special handling because arguments are in reverse order and | |
1397 | the segment name is quoted. */ | |
1398 | exp_print_token (tree->type.node_code, FALSE); | |
1399 | fputs (" (\"", config.map_file); | |
1400 | exp_print_tree (tree->binary.rhs); | |
1401 | fputs ("\", ", config.map_file); | |
1402 | exp_print_tree (tree->binary.lhs); | |
1403 | fputc (')', config.map_file); | |
1404 | return; | |
ae78bbeb AM |
1405 | } |
1406 | if (function_like) | |
1407 | { | |
1408 | exp_print_token (tree->type.node_code, FALSE); | |
1409 | fputc (' ', config.map_file); | |
1410 | } | |
1411 | fputc ('(', config.map_file); | |
8c95a62e | 1412 | exp_print_tree (tree->binary.lhs); |
ae78bbeb AM |
1413 | if (function_like) |
1414 | fprintf (config.map_file, ", "); | |
1415 | else | |
1416 | exp_print_token (tree->type.node_code, TRUE); | |
8c95a62e | 1417 | exp_print_tree (tree->binary.rhs); |
ae78bbeb | 1418 | fputc (')', config.map_file); |
8c95a62e KH |
1419 | break; |
1420 | case etree_trinary: | |
1421 | exp_print_tree (tree->trinary.cond); | |
ae78bbeb | 1422 | fputc ('?', config.map_file); |
8c95a62e | 1423 | exp_print_tree (tree->trinary.lhs); |
ae78bbeb | 1424 | fputc (':', config.map_file); |
8c95a62e KH |
1425 | exp_print_tree (tree->trinary.rhs); |
1426 | break; | |
1427 | case etree_unary: | |
b34976b6 | 1428 | exp_print_token (tree->unary.type.node_code, FALSE); |
8c95a62e KH |
1429 | if (tree->unary.child) |
1430 | { | |
7b17f854 | 1431 | fprintf (config.map_file, " ("); |
8c95a62e | 1432 | exp_print_tree (tree->unary.child); |
ae78bbeb | 1433 | fputc (')', config.map_file); |
8c95a62e KH |
1434 | } |
1435 | break; | |
1436 | ||
1437 | case etree_assert: | |
1438 | fprintf (config.map_file, "ASSERT ("); | |
1439 | exp_print_tree (tree->assert_s.child); | |
1440 | fprintf (config.map_file, ", %s)", tree->assert_s.message); | |
1441 | break; | |
1442 | ||
8c95a62e KH |
1443 | case etree_name: |
1444 | if (tree->type.node_code == NAME) | |
ae78bbeb | 1445 | fputs (tree->name.name, config.map_file); |
8c95a62e KH |
1446 | else |
1447 | { | |
b34976b6 | 1448 | exp_print_token (tree->type.node_code, FALSE); |
8c95a62e | 1449 | if (tree->name.name) |
7b17f854 | 1450 | fprintf (config.map_file, " (%s)", tree->name.name); |
8c95a62e KH |
1451 | } |
1452 | break; | |
1453 | default: | |
1454 | FAIL (); | |
1455 | break; | |
252b5132 | 1456 | } |
252b5132 RH |
1457 | } |
1458 | ||
1459 | bfd_vma | |
e9ee469a | 1460 | exp_get_vma (etree_type *tree, bfd_vma def, char *name) |
252b5132 | 1461 | { |
252b5132 RH |
1462 | if (tree != NULL) |
1463 | { | |
e9ee469a AM |
1464 | exp_fold_tree_no_dot (tree); |
1465 | if (expld.result.valid_p) | |
1466 | return expld.result.value; | |
1467 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
dab69f68 AM |
1468 | einfo (_("%F%S: nonconstant expression for %s\n"), |
1469 | tree, name); | |
252b5132 | 1470 | } |
e9ee469a | 1471 | return def; |
252b5132 RH |
1472 | } |
1473 | ||
4de2d33d | 1474 | int |
e9ee469a | 1475 | exp_get_value_int (etree_type *tree, int def, char *name) |
252b5132 | 1476 | { |
e9ee469a | 1477 | return exp_get_vma (tree, def, name); |
252b5132 RH |
1478 | } |
1479 | ||
2c382fb6 | 1480 | fill_type * |
e9ee469a | 1481 | exp_get_fill (etree_type *tree, fill_type *def, char *name) |
2c382fb6 AM |
1482 | { |
1483 | fill_type *fill; | |
2c382fb6 AM |
1484 | size_t len; |
1485 | unsigned int val; | |
1486 | ||
1487 | if (tree == NULL) | |
1488 | return def; | |
1489 | ||
e9ee469a AM |
1490 | exp_fold_tree_no_dot (tree); |
1491 | if (!expld.result.valid_p) | |
1492 | { | |
1493 | if (name != NULL && expld.phase != lang_mark_phase_enum) | |
dab69f68 AM |
1494 | einfo (_("%F%S: nonconstant expression for %s\n"), |
1495 | tree, name); | |
e9ee469a AM |
1496 | return def; |
1497 | } | |
2c382fb6 | 1498 | |
e9ee469a | 1499 | if (expld.result.str != NULL && (len = strlen (expld.result.str)) != 0) |
2c382fb6 AM |
1500 | { |
1501 | unsigned char *dst; | |
1502 | unsigned char *s; | |
1e9cc1c2 | 1503 | fill = (fill_type *) xmalloc ((len + 1) / 2 + sizeof (*fill) - 1); |
2c382fb6 AM |
1504 | fill->size = (len + 1) / 2; |
1505 | dst = fill->data; | |
e9ee469a | 1506 | s = (unsigned char *) expld.result.str; |
2c382fb6 AM |
1507 | val = 0; |
1508 | do | |
1509 | { | |
1510 | unsigned int digit; | |
1511 | ||
1512 | digit = *s++ - '0'; | |
1513 | if (digit > 9) | |
1514 | digit = (digit - 'A' + '0' + 10) & 0xf; | |
1515 | val <<= 4; | |
1516 | val += digit; | |
1517 | --len; | |
1518 | if ((len & 1) == 0) | |
1519 | { | |
1520 | *dst++ = val; | |
1521 | val = 0; | |
1522 | } | |
1523 | } | |
1524 | while (len != 0); | |
1525 | } | |
1526 | else | |
1527 | { | |
1e9cc1c2 | 1528 | fill = (fill_type *) xmalloc (4 + sizeof (*fill) - 1); |
e9ee469a | 1529 | val = expld.result.value; |
2c382fb6 AM |
1530 | fill->data[0] = (val >> 24) & 0xff; |
1531 | fill->data[1] = (val >> 16) & 0xff; | |
1532 | fill->data[2] = (val >> 8) & 0xff; | |
1533 | fill->data[3] = (val >> 0) & 0xff; | |
1534 | fill->size = 4; | |
1535 | } | |
1536 | return fill; | |
1537 | } | |
1538 | ||
252b5132 | 1539 | bfd_vma |
e9ee469a | 1540 | exp_get_abs_int (etree_type *tree, int def, char *name) |
252b5132 | 1541 | { |
e9ee469a AM |
1542 | if (tree != NULL) |
1543 | { | |
1544 | exp_fold_tree_no_dot (tree); | |
c7d701b0 | 1545 | |
e9ee469a AM |
1546 | if (expld.result.valid_p) |
1547 | { | |
7542af2a AM |
1548 | if (expld.result.section != NULL) |
1549 | expld.result.value += expld.result.section->vma; | |
e9ee469a AM |
1550 | return expld.result.value; |
1551 | } | |
1552 | else if (name != NULL && expld.phase != lang_mark_phase_enum) | |
f856040a | 1553 | { |
dab69f68 AM |
1554 | einfo (_("%F%S: nonconstant expression for %s\n"), |
1555 | tree, name); | |
f856040a | 1556 | } |
e9ee469a AM |
1557 | } |
1558 | return def; | |
252b5132 | 1559 | } |
c553bb91 | 1560 | |
e5caa5e0 AM |
1561 | static bfd_vma |
1562 | align_n (bfd_vma value, bfd_vma align) | |
c553bb91 AM |
1563 | { |
1564 | if (align <= 1) | |
1565 | return value; | |
1566 | ||
1567 | value = (value + align - 1) / align; | |
1568 | return value * align; | |
1569 | } | |
18d6a79d AM |
1570 | |
1571 | void | |
1572 | ldexp_init (void) | |
1573 | { | |
1574 | /* The value "13" is ad-hoc, somewhat related to the expected number of | |
1575 | assignments in a linker script. */ | |
1576 | if (!bfd_hash_table_init_n (&definedness_table, | |
1577 | definedness_newfunc, | |
1578 | sizeof (struct definedness_hash_entry), | |
1579 | 13)) | |
1580 | einfo (_("%P%F: can not create hash table: %E\n")); | |
1581 | } | |
1582 | ||
1583 | void | |
1584 | ldexp_finish (void) | |
1585 | { | |
1586 | bfd_hash_table_free (&definedness_table); | |
1587 | } |