1 /* This module handles expression trees.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005
4 Free Software Foundation, Inc.
5 Written by Steve Chamberlain of Cygnus Support <sac@cygnus.com>.
7 This file is part of GLD, the Gnu Linker.
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)
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.
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
21 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
24 /* This module is in charge of working out the contents of expressions.
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
41 #include "libiberty.h"
42 #include "safe-ctype.h"
44 static etree_value_type exp_fold_tree_1
45 (etree_type *, asection *, lang_phase_type, bfd_vma, bfd_vma *, bfd_boolean);
46 static etree_value_type exp_fold_tree_no_dot
47 (etree_type *, asection *, lang_phase_type, bfd_boolean);
48 static bfd_vma align_n
51 struct exp_data_seg exp_data_seg;
53 segment_type *segments;
55 /* Principally used for diagnostics. */
56 static bfd_boolean assigning_to_dot = FALSE;
58 /* Print the string representation of the given token. Surround it
59 with spaces if INFIX_P is TRUE. */
62 exp_print_token (token_code_type code, int infix_p)
96 { SECTIONS, "SECTIONS" },
97 { SIZEOF_HEADERS, "SIZEOF_HEADERS" },
99 { DEFINED, "DEFINED" },
100 { TARGET_K, "TARGET" },
101 { SEARCH_DIR, "SEARCH_DIR" },
105 { SIZEOF, "SIZEOF" },
107 { LOADADDR, "LOADADDR" },
109 { REL, "relocatable" },
110 { DATA_SEGMENT_ALIGN, "DATA_SEGMENT_ALIGN" },
111 { DATA_SEGMENT_RELRO_END, "DATA_SEGMENT_RELRO_END" },
112 { DATA_SEGMENT_END, "DATA_SEGMENT_END" },
113 { ORIGIN, "ORIGIN" },
114 { LENGTH, "LENGTH" },
115 { SEGMENT_START, "SEGMENT_START" }
119 for (idx = 0; idx < ARRAY_SIZE (table); idx++)
120 if (table[idx].code == code)
124 fputc (' ', config.map_file);
126 if (idx < ARRAY_SIZE (table))
127 fputs (table[idx].name, config.map_file);
129 fputc (code, config.map_file);
131 fprintf (config.map_file, "<code %d>", code);
134 fputc (' ', config.map_file);
138 make_abs (etree_value_type *ptr)
140 ptr->value += ptr->section->vma;
141 ptr->section = bfd_abs_section_ptr;
144 static etree_value_type
145 new_abs (bfd_vma value)
147 etree_value_type new;
149 new.section = bfd_abs_section_ptr;
156 exp_intop (bfd_vma value)
158 etree_type *new = stat_alloc (sizeof (new->value));
159 new->type.node_code = INT;
160 new->value.value = value;
161 new->value.str = NULL;
162 new->type.node_class = etree_value;
167 exp_bigintop (bfd_vma value, char *str)
169 etree_type *new = stat_alloc (sizeof (new->value));
170 new->type.node_code = INT;
171 new->value.value = value;
172 new->value.str = str;
173 new->type.node_class = etree_value;
177 /* Build an expression representing an unnamed relocatable value. */
180 exp_relop (asection *section, bfd_vma value)
182 etree_type *new = stat_alloc (sizeof (new->rel));
183 new->type.node_code = REL;
184 new->type.node_class = etree_rel;
185 new->rel.section = section;
186 new->rel.value = value;
190 static etree_value_type
191 new_rel (bfd_vma value,
195 etree_value_type new;
199 new.section = section;
203 static etree_value_type
204 new_rel_from_section (bfd_vma value, asection *section)
206 etree_value_type new;
210 new.section = section;
212 new.value -= section->vma;
217 static etree_value_type
218 fold_unary (etree_type *tree,
219 asection *current_section,
220 lang_phase_type allocation_done,
223 bfd_boolean mark_used)
225 etree_value_type result;
227 result = exp_fold_tree_1 (tree->unary.child,
229 allocation_done, dot, dotp, mark_used);
232 switch (tree->type.node_code)
235 if (allocation_done != lang_first_phase_enum)
236 result = new_rel_from_section (align_n (dot, result.value),
239 result.valid_p = FALSE;
243 if (allocation_done != lang_first_phase_enum)
245 result.value += result.section->vma;
246 result.section = bfd_abs_section_ptr;
249 result.valid_p = FALSE;
254 result.value = ~result.value;
259 result.value = !result.value;
264 result.value = -result.value;
268 /* Return next place aligned to value. */
269 if (allocation_done == lang_allocating_phase_enum)
272 result.value = align_n (dot, result.value);
275 result.valid_p = FALSE;
278 case DATA_SEGMENT_END:
279 if (allocation_done != lang_first_phase_enum
280 && current_section == bfd_abs_section_ptr
281 && (exp_data_seg.phase == exp_dataseg_align_seen
282 || exp_data_seg.phase == exp_dataseg_relro_seen
283 || exp_data_seg.phase == exp_dataseg_adjust
284 || exp_data_seg.phase == exp_dataseg_relro_adjust
285 || allocation_done != lang_allocating_phase_enum))
287 if (exp_data_seg.phase == exp_dataseg_align_seen
288 || exp_data_seg.phase == exp_dataseg_relro_seen)
290 exp_data_seg.phase = exp_dataseg_end_seen;
291 exp_data_seg.end = result.value;
295 result.valid_p = FALSE;
307 static etree_value_type
308 fold_binary (etree_type *tree,
309 asection *current_section,
310 lang_phase_type allocation_done,
313 bfd_boolean mark_used)
315 etree_value_type result;
317 result = exp_fold_tree_1 (tree->binary.lhs, current_section,
318 allocation_done, dot, dotp, mark_used);
320 /* The SEGMENT_START operator is special because its first
321 operand is a string, not the name of a symbol. */
322 if (result.valid_p && tree->type.node_code == SEGMENT_START)
324 const char *segment_name;
326 /* Check to see if the user has overridden the default
328 segment_name = tree->binary.rhs->name.name;
329 for (seg = segments; seg; seg = seg->next)
330 if (strcmp (seg->name, segment_name) == 0)
333 result.value = seg->value;
335 result.section = NULL;
339 else if (result.valid_p)
341 etree_value_type other;
343 other = exp_fold_tree_1 (tree->binary.rhs,
346 dot, dotp, mark_used);
349 /* If the values are from different sections, or this is an
350 absolute expression, make both the source arguments
351 absolute. However, adding or subtracting an absolute
352 value from a relative value is meaningful, and is an
354 if (current_section != bfd_abs_section_ptr
355 && (other.section == bfd_abs_section_ptr
356 || (result.section == bfd_abs_section_ptr
357 && tree->type.node_code == '+'))
358 && (tree->type.node_code == '+'
359 || tree->type.node_code == '-'))
361 if (other.section != bfd_abs_section_ptr)
363 /* Keep the section of the other term. */
364 if (tree->type.node_code == '+')
365 other.value = result.value + other.value;
367 other.value = result.value - other.value;
371 else if (result.section != other.section
372 || current_section == bfd_abs_section_ptr)
378 switch (tree->type.node_code)
381 if (other.value == 0)
382 einfo (_("%F%S %% by zero\n"));
383 result.value = ((bfd_signed_vma) result.value
384 % (bfd_signed_vma) other.value);
388 if (other.value == 0)
389 einfo (_("%F%S / by zero\n"));
390 result.value = ((bfd_signed_vma) result.value
391 / (bfd_signed_vma) other.value);
394 #define BOP(x,y) case x : result.value = result.value y other.value; break;
413 if (result.value < other.value)
418 if (result.value > other.value)
423 result.value = align_n (result.value, other.value);
426 case DATA_SEGMENT_ALIGN:
427 if (allocation_done != lang_first_phase_enum
428 && current_section == bfd_abs_section_ptr
429 && (exp_data_seg.phase == exp_dataseg_none
430 || exp_data_seg.phase == exp_dataseg_adjust
431 || exp_data_seg.phase == exp_dataseg_relro_adjust
432 || allocation_done != lang_allocating_phase_enum))
434 bfd_vma maxpage = result.value;
436 result.value = align_n (dot, maxpage);
437 if (exp_data_seg.phase == exp_dataseg_relro_adjust)
438 result.value = exp_data_seg.base;
439 else if (exp_data_seg.phase != exp_dataseg_adjust)
441 result.value += dot & (maxpage - 1);
442 if (allocation_done == lang_allocating_phase_enum)
444 exp_data_seg.phase = exp_dataseg_align_seen;
445 exp_data_seg.min_base = align_n (dot, maxpage);
446 exp_data_seg.base = result.value;
447 exp_data_seg.pagesize = other.value;
448 exp_data_seg.maxpagesize = maxpage;
449 exp_data_seg.relro_end = 0;
452 else if (other.value < maxpage)
453 result.value += (dot + other.value - 1)
454 & (maxpage - other.value);
457 result.valid_p = FALSE;
460 case DATA_SEGMENT_RELRO_END:
461 if (allocation_done != lang_first_phase_enum
462 && (exp_data_seg.phase == exp_dataseg_align_seen
463 || exp_data_seg.phase == exp_dataseg_adjust
464 || exp_data_seg.phase == exp_dataseg_relro_adjust
465 || allocation_done != lang_allocating_phase_enum))
467 if (exp_data_seg.phase == exp_dataseg_align_seen
468 || exp_data_seg.phase == exp_dataseg_relro_adjust)
469 exp_data_seg.relro_end
470 = result.value + other.value;
471 if (exp_data_seg.phase == exp_dataseg_relro_adjust
472 && (exp_data_seg.relro_end
473 & (exp_data_seg.pagesize - 1)))
475 exp_data_seg.relro_end += exp_data_seg.pagesize - 1;
476 exp_data_seg.relro_end &= ~(exp_data_seg.pagesize - 1);
477 result.value = exp_data_seg.relro_end - other.value;
479 if (exp_data_seg.phase == exp_dataseg_align_seen)
480 exp_data_seg.phase = exp_dataseg_relro_seen;
483 result.valid_p = FALSE;
492 result.valid_p = FALSE;
499 static etree_value_type
500 fold_trinary (etree_type *tree,
501 asection *current_section,
502 lang_phase_type allocation_done,
505 bfd_boolean mark_used)
507 etree_value_type result;
509 result = exp_fold_tree_1 (tree->trinary.cond, current_section,
510 allocation_done, dot, dotp, mark_used);
512 result = exp_fold_tree_1 ((result.value
514 : tree->trinary.rhs),
517 dot, dotp, mark_used);
522 static etree_value_type
523 fold_name (etree_type *tree,
524 asection *current_section,
525 lang_phase_type allocation_done,
527 bfd_boolean mark_used)
529 etree_value_type result;
531 memset (&result, 0, sizeof (result));
533 switch (tree->type.node_code)
536 if (allocation_done != lang_first_phase_enum)
537 result = new_abs (bfd_sizeof_headers (output_bfd,
538 link_info.relocatable));
541 if (allocation_done == lang_first_phase_enum)
542 lang_track_definedness (tree->name.name);
545 struct bfd_link_hash_entry *h;
547 = lang_symbol_definition_iteration (tree->name.name);
549 h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info,
552 result.value = (h != NULL
553 && (h->type == bfd_link_hash_defined
554 || h->type == bfd_link_hash_defweak
555 || h->type == bfd_link_hash_common)
556 && (def_iteration == lang_statement_iteration
557 || def_iteration == -1));
558 result.section = bfd_abs_section_ptr;
559 result.valid_p = TRUE;
563 if (tree->name.name[0] == '.' && tree->name.name[1] == 0)
565 if (allocation_done != lang_first_phase_enum)
566 result = new_rel_from_section (dot, current_section);
568 else if (allocation_done != lang_first_phase_enum)
570 struct bfd_link_hash_entry *h;
572 h = bfd_wrapped_link_hash_lookup (output_bfd, &link_info,
576 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
577 else if (h->type == bfd_link_hash_defined
578 || h->type == bfd_link_hash_defweak)
580 if (bfd_is_abs_section (h->u.def.section))
581 result = new_abs (h->u.def.value);
582 else if (allocation_done == lang_final_phase_enum
583 || allocation_done == lang_allocating_phase_enum)
585 asection *output_section;
587 output_section = h->u.def.section->output_section;
588 if (output_section == NULL)
589 einfo (_("%X%S: unresolvable symbol `%s' referenced in expression\n"),
593 /* FIXME: Is this correct if this section is
594 being linked with -R? */
595 result = new_rel ((h->u.def.value
596 + h->u.def.section->output_offset),
599 output_section->flags |= SEC_KEEP;
603 else if (allocation_done == lang_final_phase_enum
605 einfo (_("%F%S: undefined symbol `%s' referenced in expression\n"),
607 else if (h->type == bfd_link_hash_new)
609 h->type = bfd_link_hash_undefined;
610 h->u.undef.abfd = NULL;
611 if (h->u.undef.next == NULL && h != link_info.hash->undefs_tail)
612 bfd_link_add_undef (link_info.hash, h);
618 if (allocation_done != lang_first_phase_enum)
620 lang_output_section_statement_type *os;
622 os = lang_output_section_find (tree->name.name);
625 os->bfd_section->flags |= SEC_KEEP;
626 if (os->processed > 0)
627 result = new_rel (0, NULL, os->bfd_section);
633 if (allocation_done != lang_first_phase_enum)
635 lang_output_section_statement_type *os;
637 os = lang_output_section_find (tree->name.name);
640 os->bfd_section->flags |= SEC_KEEP;
641 if (os->processed != 0)
643 if (os->load_base == NULL)
644 result = new_rel (0, NULL, os->bfd_section);
646 result = exp_fold_tree_no_dot (os->load_base,
656 if (allocation_done != lang_first_phase_enum)
658 int opb = bfd_octets_per_byte (output_bfd);
659 lang_output_section_statement_type *os;
661 os = lang_output_section_find (tree->name.name);
664 os->bfd_section->flags |= SEC_KEEP;
665 if (os->processed > 0)
666 result = new_abs (os->bfd_section->size / opb);
673 lang_memory_region_type *mem;
675 mem = lang_memory_region_lookup (tree->name.name, FALSE);
677 result = new_abs (mem->length);
679 einfo (_("%F%S: undefined MEMORY region `%s' referenced in expression\n"),
686 lang_memory_region_type *mem;
688 mem = lang_memory_region_lookup (tree->name.name, FALSE);
690 result = new_abs (mem->origin);
692 einfo (_("%F%S: undefined MEMORY region `%s' referenced in expression\n"),
705 static etree_value_type
706 exp_fold_tree_1 (etree_type *tree,
707 asection *current_section,
708 lang_phase_type allocation_done,
711 bfd_boolean mark_used)
713 etree_value_type result;
717 memset (&result, 0, sizeof (result));
721 switch (tree->type.node_class)
724 result = new_rel (tree->value.value, tree->value.str, current_section);
728 if (allocation_done != lang_final_phase_enum)
729 memset (&result, 0, sizeof (result));
731 result = new_rel ((tree->rel.value
732 + tree->rel.section->output_section->vma
733 + tree->rel.section->output_offset),
739 result = exp_fold_tree_1 (tree->assert_s.child,
741 allocation_done, dot, dotp,
746 /* We don't care if assert fails or not when we are just
747 marking if a section is used or not. */
749 else if (!result.value)
750 einfo ("%X%P: %s\n", tree->assert_s.message);
755 result = fold_unary (tree, current_section, allocation_done,
756 dot, dotp, mark_used);
760 result = fold_binary (tree, current_section, allocation_done,
761 dot, dotp, mark_used);
765 result = fold_trinary (tree, current_section, allocation_done,
766 dot, dotp, mark_used);
772 if (tree->assign.dst[0] == '.' && tree->assign.dst[1] == 0)
774 /* Assignment to dot can only be done during allocation. */
775 if (tree->type.node_class != etree_assign)
776 einfo (_("%F%S can not PROVIDE assignment to location counter\n"));
777 if (allocation_done == lang_allocating_phase_enum
778 || (allocation_done == lang_final_phase_enum
779 && current_section == bfd_abs_section_ptr))
781 /* Notify the folder that this is an assignment to dot. */
782 assigning_to_dot = TRUE;
783 result = exp_fold_tree_1 (tree->assign.src,
786 dot, dotp, mark_used);
787 assigning_to_dot = FALSE;
789 if (! result.valid_p)
790 einfo (_("%F%S invalid assignment to location counter\n"));
793 if (current_section == NULL)
794 einfo (_("%F%S assignment to location counter invalid outside of SECTION\n"));
799 nextdot = result.value + current_section->vma;
801 && current_section != bfd_abs_section_ptr)
802 einfo (_("%F%S cannot move location counter backwards (from %V to %V)\n"),
810 memset (&result, 0, sizeof (result));
814 result = exp_fold_tree_1 (tree->assign.src,
815 current_section, allocation_done,
816 dot, dotp, mark_used);
820 struct bfd_link_hash_entry *h;
822 if (tree->type.node_class == etree_assign)
826 h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst,
827 create, FALSE, TRUE);
831 einfo (_("%P%F:%s: hash creation failed\n"),
834 else if (tree->type.node_class == etree_provide
835 && h->type != bfd_link_hash_new
836 && h->type != bfd_link_hash_undefined
837 && h->type != bfd_link_hash_common)
839 /* Do nothing. The symbol was defined by some
844 /* FIXME: Should we worry if the symbol is already
846 lang_update_definedness (tree->assign.dst, h);
847 h->type = bfd_link_hash_defined;
848 h->u.def.value = result.value;
849 h->u.def.section = result.section;
850 if (tree->type.node_class == etree_provide)
851 tree->type.node_class = etree_provided;
858 result = fold_name (tree, current_section, allocation_done, dot,
864 memset (&result, 0, sizeof (result));
872 exp_fold_tree (etree_type *tree,
873 asection *current_section,
874 lang_phase_type allocation_done,
878 return exp_fold_tree_1 (tree, current_section, allocation_done,
882 static etree_value_type
883 exp_fold_tree_no_dot (etree_type *tree,
884 asection *current_section,
885 lang_phase_type allocation_done,
886 bfd_boolean mark_used)
888 return exp_fold_tree_1 (tree, current_section, allocation_done, 0,
893 exp_binop (int code, etree_type *lhs, etree_type *rhs)
895 etree_type value, *new;
898 value.type.node_code = code;
899 value.binary.lhs = lhs;
900 value.binary.rhs = rhs;
901 value.type.node_class = etree_binary;
902 r = exp_fold_tree_no_dot (&value,
904 lang_first_phase_enum, FALSE);
907 return exp_intop (r.value);
909 new = stat_alloc (sizeof (new->binary));
910 memcpy (new, &value, sizeof (new->binary));
915 exp_trinop (int code, etree_type *cond, etree_type *lhs, etree_type *rhs)
917 etree_type value, *new;
919 value.type.node_code = code;
920 value.trinary.lhs = lhs;
921 value.trinary.cond = cond;
922 value.trinary.rhs = rhs;
923 value.type.node_class = etree_trinary;
924 r = exp_fold_tree_no_dot (&value, NULL, lang_first_phase_enum, FALSE);
926 return exp_intop (r.value);
928 new = stat_alloc (sizeof (new->trinary));
929 memcpy (new, &value, sizeof (new->trinary));
934 exp_unop (int code, etree_type *child)
936 etree_type value, *new;
939 value.unary.type.node_code = code;
940 value.unary.child = child;
941 value.unary.type.node_class = etree_unary;
942 r = exp_fold_tree_no_dot (&value, bfd_abs_section_ptr,
943 lang_first_phase_enum, FALSE);
945 return exp_intop (r.value);
947 new = stat_alloc (sizeof (new->unary));
948 memcpy (new, &value, sizeof (new->unary));
953 exp_nameop (int code, const char *name)
955 etree_type value, *new;
957 value.name.type.node_code = code;
958 value.name.name = name;
959 value.name.type.node_class = etree_name;
961 r = exp_fold_tree_no_dot (&value, NULL, lang_first_phase_enum, FALSE);
963 return exp_intop (r.value);
965 new = stat_alloc (sizeof (new->name));
966 memcpy (new, &value, sizeof (new->name));
972 exp_assop (int code, const char *dst, etree_type *src)
974 etree_type value, *new;
976 value.assign.type.node_code = code;
978 value.assign.src = src;
979 value.assign.dst = dst;
980 value.assign.type.node_class = etree_assign;
982 new = stat_alloc (sizeof (new->assign));
983 memcpy (new, &value, sizeof (new->assign));
987 /* Handle PROVIDE. */
990 exp_provide (const char *dst, etree_type *src)
994 n = stat_alloc (sizeof (n->assign));
995 n->assign.type.node_code = '=';
996 n->assign.type.node_class = etree_provide;
1002 /* Handle ASSERT. */
1005 exp_assert (etree_type *exp, const char *message)
1009 n = stat_alloc (sizeof (n->assert_s));
1010 n->assert_s.type.node_code = '!';
1011 n->assert_s.type.node_class = etree_assert;
1012 n->assert_s.child = exp;
1013 n->assert_s.message = message;
1018 exp_print_tree (etree_type *tree)
1020 if (config.map_file == NULL)
1021 config.map_file = stderr;
1025 minfo ("NULL TREE\n");
1029 switch (tree->type.node_class)
1032 minfo ("0x%v", tree->value.value);
1035 if (tree->rel.section->owner != NULL)
1036 minfo ("%B:", tree->rel.section->owner);
1037 minfo ("%s+0x%v", tree->rel.section->name, tree->rel.value);
1040 fprintf (config.map_file, "%s", tree->assign.dst);
1041 exp_print_token (tree->type.node_code, TRUE);
1042 exp_print_tree (tree->assign.src);
1045 case etree_provided:
1046 fprintf (config.map_file, "PROVIDE (%s, ", tree->assign.dst);
1047 exp_print_tree (tree->assign.src);
1048 fprintf (config.map_file, ")");
1051 fprintf (config.map_file, "(");
1052 exp_print_tree (tree->binary.lhs);
1053 exp_print_token (tree->type.node_code, TRUE);
1054 exp_print_tree (tree->binary.rhs);
1055 fprintf (config.map_file, ")");
1058 exp_print_tree (tree->trinary.cond);
1059 fprintf (config.map_file, "?");
1060 exp_print_tree (tree->trinary.lhs);
1061 fprintf (config.map_file, ":");
1062 exp_print_tree (tree->trinary.rhs);
1065 exp_print_token (tree->unary.type.node_code, FALSE);
1066 if (tree->unary.child)
1068 fprintf (config.map_file, " (");
1069 exp_print_tree (tree->unary.child);
1070 fprintf (config.map_file, ")");
1075 fprintf (config.map_file, "ASSERT (");
1076 exp_print_tree (tree->assert_s.child);
1077 fprintf (config.map_file, ", %s)", tree->assert_s.message);
1081 fprintf (config.map_file, "????????");
1084 if (tree->type.node_code == NAME)
1086 fprintf (config.map_file, "%s", tree->name.name);
1090 exp_print_token (tree->type.node_code, FALSE);
1091 if (tree->name.name)
1092 fprintf (config.map_file, " (%s)", tree->name.name);
1102 exp_get_vma (etree_type *tree,
1105 lang_phase_type allocation_done)
1111 r = exp_fold_tree_no_dot (tree, bfd_abs_section_ptr,
1112 allocation_done, FALSE);
1113 if (! r.valid_p && name != NULL)
1114 einfo (_("%F%S nonconstant expression for %s\n"), name);
1122 exp_get_value_int (etree_type *tree,
1125 lang_phase_type allocation_done)
1127 return exp_get_vma (tree, def, name, allocation_done);
1131 exp_get_fill (etree_type *tree,
1134 lang_phase_type allocation_done)
1144 r = exp_fold_tree_no_dot (tree, bfd_abs_section_ptr, allocation_done,
1146 if (! r.valid_p && name != NULL)
1147 einfo (_("%F%S nonconstant expression for %s\n"), name);
1149 if (r.str != NULL && (len = strlen (r.str)) != 0)
1153 fill = xmalloc ((len + 1) / 2 + sizeof (*fill) - 1);
1154 fill->size = (len + 1) / 2;
1156 s = (unsigned char *) r.str;
1164 digit = (digit - 'A' + '0' + 10) & 0xf;
1178 fill = xmalloc (4 + sizeof (*fill) - 1);
1180 fill->data[0] = (val >> 24) & 0xff;
1181 fill->data[1] = (val >> 16) & 0xff;
1182 fill->data[2] = (val >> 8) & 0xff;
1183 fill->data[3] = (val >> 0) & 0xff;
1190 exp_get_abs_int (etree_type *tree,
1191 int def ATTRIBUTE_UNUSED,
1193 lang_phase_type allocation_done)
1195 etree_value_type res;
1196 res = exp_fold_tree_no_dot (tree, bfd_abs_section_ptr, allocation_done,
1200 res.value += res.section->vma;
1202 einfo (_("%F%S non constant expression for %s\n"), name);
1208 align_n (bfd_vma value, bfd_vma align)
1213 value = (value + align - 1) / align;
1214 return value * align;
1218 exp_mark_used_section (etree_type *tree, asection *current_section)
1222 switch (tree->type.node_class)
1237 fold_binary (tree, current_section, lang_allocating_phase_enum,
1246 case etree_provided:
1247 if (tree->assign.dst[0] != '.' || tree->assign.dst[1] != 0)
1249 etree_value_type result;
1250 bfd_boolean create = tree->type.node_class == etree_assign;
1251 struct bfd_link_hash_entry *h;
1253 result = exp_fold_tree_1 (tree->assign.src,
1255 lang_allocating_phase_enum,
1258 /* We mark the current section SEC_KEEP only if the symbol
1261 h = bfd_link_hash_lookup (link_info.hash, tree->assign.dst,
1262 create, FALSE, TRUE);
1267 && current_section != bfd_abs_section_ptr)
1268 current_section->flags |= SEC_KEEP;
1274 h = bfd_link_hash_lookup (link_info.hash,
1275 tree->assign.dst, create,
1280 einfo (_("%P%F:%s: hash creation failed\n"),
1283 else if (tree->type.node_class == etree_provide
1284 && h->type != bfd_link_hash_new
1285 && h->type != bfd_link_hash_undefined
1286 && h->type != bfd_link_hash_common)
1288 /* Do nothing. The symbol was defined by some
1293 /* FIXME: Should we worry if the symbol is already
1295 lang_update_definedness (tree->assign.dst, h);
1296 h->type = bfd_link_hash_defined;
1297 h->u.def.value = result.value;
1298 h->u.def.section = result.section;
1299 if (tree->type.node_class == etree_provide)
1300 tree->type.node_class = etree_provided;
1307 fold_name (tree, current_section, lang_allocating_phase_enum, 0,