diff options
Diffstat (limited to 'ld/ldlang.c')
| -rw-r--r-- | ld/ldlang.c | 4624 |
1 files changed, 0 insertions, 4624 deletions
diff --git a/ld/ldlang.c b/ld/ldlang.c deleted file mode 100644 index a2c533d7a81..00000000000 --- a/ld/ldlang.c +++ /dev/null @@ -1,4624 +0,0 @@ -/* Linker command language support. - Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999 - Free Software Foundation, Inc. - -This file is part of GLD, the Gnu Linker. - -GLD is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GLD is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GLD; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include "libiberty.h" -#include "obstack.h" -#include "bfdlink.h" - -#include "ld.h" -#include "ldmain.h" -#include "ldgram.h" -#include "ldexp.h" -#include "ldlang.h" -#include "ldemul.h" -#include "ldlex.h" -#include "ldmisc.h" -#include "ldctor.h" -#include "ldfile.h" -#include "fnmatch.h" -#include "demangle.h" - -#include <ctype.h> - -/* FORWARDS */ -static lang_statement_union_type *new_statement PARAMS ((enum statement_enum, - size_t, - lang_statement_list_type*)); - - -/* LOCALS */ -static struct obstack stat_obstack; - -#define obstack_chunk_alloc xmalloc -#define obstack_chunk_free free -static CONST char *startup_file; -static lang_statement_list_type input_file_chain; -static boolean placed_commons = false; -static lang_output_section_statement_type *default_common_section; -static boolean map_option_f; -static bfd_vma print_dot; -static lang_input_statement_type *first_file; -static lang_statement_list_type lang_output_section_statement; -static CONST char *current_target; -static CONST char *output_target; -static lang_statement_list_type statement_list; -static struct lang_phdr *lang_phdr_list; - -static void lang_for_each_statement_worker - PARAMS ((void (*func) (lang_statement_union_type *), - lang_statement_union_type *s)); -static lang_input_statement_type *new_afile - PARAMS ((const char *name, lang_input_file_enum_type file_type, - const char *target, boolean add_to_list)); -static void init_os PARAMS ((lang_output_section_statement_type *s)); -static void exp_init_os PARAMS ((etree_type *)); -static void section_already_linked PARAMS ((bfd *, asection *, PTR)); -static boolean wildcardp PARAMS ((const char *)); -static lang_statement_union_type *wild_sort - PARAMS ((lang_wild_statement_type *, lang_input_statement_type *, - asection *)); -static lang_input_statement_type *lookup_name PARAMS ((const char *name)); -static void load_symbols PARAMS ((lang_input_statement_type *entry, - lang_statement_list_type *)); -static void wild PARAMS ((lang_wild_statement_type *s, - const char *section, const char *file, - const char *target, - lang_output_section_statement_type *output)); -static bfd *open_output PARAMS ((const char *name)); -static void ldlang_open_output PARAMS ((lang_statement_union_type *statement)); -static void open_input_bfds - PARAMS ((lang_statement_union_type *statement, boolean)); -static void lang_reasonable_defaults PARAMS ((void)); -static void lang_place_undefineds PARAMS ((void)); -static void map_input_to_output_sections - PARAMS ((lang_statement_union_type *s, - const char *target, - lang_output_section_statement_type *output_section_statement)); -static void print_output_section_statement - PARAMS ((lang_output_section_statement_type *output_section_statement)); -static void print_assignment - PARAMS ((lang_assignment_statement_type *assignment, - lang_output_section_statement_type *output_section)); -static void print_input_statement PARAMS ((lang_input_statement_type *statm)); -static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR)); -static void print_input_section PARAMS ((lang_input_section_type *in)); -static void print_fill_statement PARAMS ((lang_fill_statement_type *fill)); -static void print_data_statement PARAMS ((lang_data_statement_type *data)); -static void print_address_statement PARAMS ((lang_address_statement_type *)); -static void print_reloc_statement PARAMS ((lang_reloc_statement_type *reloc)); -static void print_padding_statement PARAMS ((lang_padding_statement_type *s)); -static void print_wild_statement - PARAMS ((lang_wild_statement_type *w, - lang_output_section_statement_type *os)); -static void print_group - PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *)); -static void print_statement PARAMS ((lang_statement_union_type *s, - lang_output_section_statement_type *os)); -static void print_statement_list PARAMS ((lang_statement_union_type *s, - lang_output_section_statement_type *os)); -static void print_statements PARAMS ((void)); -static bfd_vma insert_pad PARAMS ((lang_statement_union_type **this_ptr, - fill_type fill, unsigned int power, - asection *output_section_statement, - bfd_vma dot)); -static bfd_vma size_input_section - PARAMS ((lang_statement_union_type **this_ptr, - lang_output_section_statement_type *output_section_statement, - fill_type fill, bfd_vma dot, boolean relax)); -static void lang_finish PARAMS ((void)); -static void ignore_bfd_errors PARAMS ((const char *, ...)); -static void lang_check PARAMS ((void)); -static void lang_common PARAMS ((void)); -static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR)); -static void lang_place_orphans PARAMS ((void)); -static int topower PARAMS ((int)); -static void lang_set_startof PARAMS ((void)); -static void reset_memory_regions PARAMS ((void)); -static void lang_record_phdrs PARAMS ((void)); -static void lang_gc_wild - PARAMS ((lang_wild_statement_type *, const char *, const char *)); -static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *)); -static void lang_gc_sections PARAMS ((void)); -static void lang_do_version_exports_section PARAMS ((void)); -static void lang_check_section_addresses PARAMS ((void)); - -typedef void (*callback_t) PARAMS ((lang_wild_statement_type *, - asection *, lang_input_statement_type *, - void *)); -static void walk_wild_section - PARAMS ((lang_wild_statement_type *, const char *, - lang_input_statement_type *, callback_t, void *)); -static void walk_wild_file - PARAMS ((lang_wild_statement_type *, const char *, - lang_input_statement_type *, callback_t, void *)); - -/* EXPORTS */ -lang_output_section_statement_type *abs_output_section; -lang_statement_list_type *stat_ptr = &statement_list; -lang_statement_list_type file_chain = { 0 }; -const char *entry_symbol = NULL; -boolean entry_from_cmdline; -boolean lang_has_input_file = false; -boolean had_output_filename = false; -boolean lang_float_flag = false; -boolean delete_output_file_on_failure = false; -struct lang_nocrossrefs *nocrossref_list; - -etree_type *base; /* Relocation base - or null */ - - -#if defined(__STDC__) || defined(ALMOST_STDC) -#define cat(a,b) a##b -#else -#define cat(a,b) a/**/b -#endif - -#define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y) - -#define outside_section_address(q) ( (q)->output_offset + (q)->output_section->vma) - -#define outside_symbol_address(q) ((q)->value + outside_section_address(q->section)) - -#define SECTION_NAME_MAP_LENGTH (16) - -PTR -stat_alloc (size) - size_t size; -{ - return obstack_alloc (&stat_obstack, size); -} - -/*---------------------------------------------------------------------- - Generic traversal routines for finding matching sections. -*/ - -static void -walk_wild_section (ptr, section, file, callback, data) - lang_wild_statement_type *ptr; - const char *section; - lang_input_statement_type *file; - callback_t callback; - void *data; -{ - /* Don't process sections from files which were excluded. */ - if (ptr->exclude_filename != NULL) - { - boolean match; - - if (wildcardp (ptr->exclude_filename)) - match = fnmatch (ptr->exclude_filename, file->filename, 0) == 0 ? true : false; - else - match = strcmp (ptr->exclude_filename, file->filename) == 0 ? true : false; - - if (match) - return; - } - - if (file->just_syms_flag == false) - { - register asection *s; - boolean wildcard; - - if (section == NULL) - wildcard = false; - else - wildcard = wildcardp (section); - - for (s = file->the_bfd->sections; s != NULL; s = s->next) - { - boolean match; - - if (section == NULL) - match = true; - else - { - const char *name; - - name = bfd_get_section_name (file->the_bfd, s); - if (wildcard) - match = fnmatch (section, name, 0) == 0 ? true : false; - else - match = strcmp (section, name) == 0 ? true : false; - } - - if (match) - (*callback) (ptr, s, file, data); - } - } -} - -/* Handle a wild statement for a single file F. */ - -static void -walk_wild_file (s, section, f, callback, data) - lang_wild_statement_type *s; - const char *section; - lang_input_statement_type *f; - callback_t callback; - void *data; -{ - if (f->the_bfd == NULL - || ! bfd_check_format (f->the_bfd, bfd_archive)) - walk_wild_section (s, section, f, callback, data); - else - { - bfd *member; - - /* This is an archive file. We must map each member of the - archive separately. */ - member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL); - while (member != NULL) - { - /* When lookup_name is called, it will call the add_symbols - entry point for the archive. For each element of the - archive which is included, BFD will call ldlang_add_file, - which will set the usrdata field of the member to the - lang_input_statement. */ - if (member->usrdata != NULL) - { - walk_wild_section (s, section, - (lang_input_statement_type *) member->usrdata, - callback, data); - } - - member = bfd_openr_next_archived_file (f->the_bfd, member); - } - } -} - -static void -walk_wild (s, section, file, callback, data) - lang_wild_statement_type *s; - const char *section; - const char *file; - callback_t callback; - void *data; -{ - lang_input_statement_type *f; - - if (file == (char *) NULL) - { - /* Perform the iteration over all files in the list. */ - for (f = (lang_input_statement_type *) file_chain.head; - f != (lang_input_statement_type *) NULL; - f = (lang_input_statement_type *) f->next) - { - walk_wild_file (s, section, f, callback, data); - } - } - else if (wildcardp (file)) - { - for (f = (lang_input_statement_type *) file_chain.head; - f != (lang_input_statement_type *) NULL; - f = (lang_input_statement_type *) f->next) - { - if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0) - walk_wild_file (s, section, f, callback, data); - } - } - else - { - /* Perform the iteration over a single file. */ - f = lookup_name (file); - walk_wild_file (s, section, f, callback, data); - } -} - -/*---------------------------------------------------------------------- - lang_for_each_statement walks the parse tree and calls the provided - function for each node -*/ - -static void -lang_for_each_statement_worker (func, s) - void (*func) PARAMS ((lang_statement_union_type *)); - lang_statement_union_type *s; -{ - for (; s != (lang_statement_union_type *) NULL; s = s->next) - { - func (s); - - switch (s->header.type) - { - case lang_constructors_statement_enum: - lang_for_each_statement_worker (func, constructor_list.head); - break; - case lang_output_section_statement_enum: - lang_for_each_statement_worker - (func, - s->output_section_statement.children.head); - break; - case lang_wild_statement_enum: - lang_for_each_statement_worker - (func, - s->wild_statement.children.head); - break; - case lang_group_statement_enum: - lang_for_each_statement_worker (func, - s->group_statement.children.head); - break; - case lang_data_statement_enum: - case lang_reloc_statement_enum: - case lang_object_symbols_statement_enum: - case lang_output_statement_enum: - case lang_target_statement_enum: - case lang_input_section_enum: - case lang_input_statement_enum: - case lang_assignment_statement_enum: - case lang_padding_statement_enum: - case lang_address_statement_enum: - case lang_fill_statement_enum: - break; - default: - FAIL (); - break; - } - } -} - -void -lang_for_each_statement (func) - void (*func) PARAMS ((lang_statement_union_type *)); -{ - lang_for_each_statement_worker (func, - statement_list.head); -} - -/*----------------------------------------------------------------------*/ -void -lang_list_init (list) - lang_statement_list_type *list; -{ - list->head = (lang_statement_union_type *) NULL; - list->tail = &list->head; -} - -/*---------------------------------------------------------------------- - - build a new statement node for the parse tree - - */ - -static -lang_statement_union_type * -new_statement (type, size, list) - enum statement_enum type; - size_t size; - lang_statement_list_type * list; -{ - lang_statement_union_type *new = (lang_statement_union_type *) - stat_alloc (size); - - new->header.type = type; - new->header.next = (lang_statement_union_type *) NULL; - lang_statement_append (list, new, &new->header.next); - return new; -} - -/* - Build a new input file node for the language. There are several ways - in which we treat an input file, eg, we only look at symbols, or - prefix it with a -l etc. - - We can be supplied with requests for input files more than once; - they may, for example be split over serveral lines like foo.o(.text) - foo.o(.data) etc, so when asked for a file we check that we havn't - got it already so we don't duplicate the bfd. - - */ -static lang_input_statement_type * -new_afile (name, file_type, target, add_to_list) - CONST char *name; - lang_input_file_enum_type file_type; - CONST char *target; - boolean add_to_list; -{ - lang_input_statement_type *p; - - if (add_to_list) - p = new_stat (lang_input_statement, stat_ptr); - else - { - p = ((lang_input_statement_type *) - stat_alloc (sizeof (lang_input_statement_type))); - p->header.next = NULL; - } - - lang_has_input_file = true; - p->target = target; - switch (file_type) - { - case lang_input_file_is_symbols_only_enum: - p->filename = name; - p->is_archive = false; - p->real = true; - p->local_sym_name = name; - p->just_syms_flag = true; - p->search_dirs_flag = false; - break; - case lang_input_file_is_fake_enum: - p->filename = name; - p->is_archive = false; - p->real = false; - p->local_sym_name = name; - p->just_syms_flag = false; - p->search_dirs_flag = false; - break; - case lang_input_file_is_l_enum: - p->is_archive = true; - p->filename = name; - p->real = true; - p->local_sym_name = concat ("-l", name, (const char *) NULL); - p->just_syms_flag = false; - p->search_dirs_flag = true; - break; - case lang_input_file_is_marker_enum: - p->filename = name; - p->is_archive = false; - p->real = false; - p->local_sym_name = name; - p->just_syms_flag = false; - p->search_dirs_flag = true; - break; - case lang_input_file_is_search_file_enum: - p->filename = name; - p->is_archive = false; - p->real = true; - p->local_sym_name = name; - p->just_syms_flag = false; - p->search_dirs_flag = true; - break; - case lang_input_file_is_file_enum: - p->filename = name; - p->is_archive = false; - p->real = true; - p->local_sym_name = name; - p->just_syms_flag = false; - p->search_dirs_flag = false; - break; - default: - FAIL (); - } - p->the_bfd = (bfd *) NULL; - p->asymbols = (asymbol **) NULL; - p->next_real_file = (lang_statement_union_type *) NULL; - p->next = (lang_statement_union_type *) NULL; - p->symbol_count = 0; - p->dynamic = config.dynamic_link; - p->whole_archive = whole_archive; - p->loaded = false; - lang_statement_append (&input_file_chain, - (lang_statement_union_type *) p, - &p->next_real_file); - return p; -} - -lang_input_statement_type * -lang_add_input_file (name, file_type, target) - CONST char *name; - lang_input_file_enum_type file_type; - CONST char *target; -{ - lang_has_input_file = true; - return new_afile (name, file_type, target, true); -} - -/* Build enough state so that the parser can build its tree */ -void -lang_init () -{ - obstack_begin (&stat_obstack, 1000); - - stat_ptr = &statement_list; - - lang_list_init (stat_ptr); - - lang_list_init (&input_file_chain); - lang_list_init (&lang_output_section_statement); - lang_list_init (&file_chain); - first_file = lang_add_input_file ((char *) NULL, - lang_input_file_is_marker_enum, - (char *) NULL); - abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME); - - abs_output_section->bfd_section = bfd_abs_section_ptr; - -} - -/*---------------------------------------------------------------------- - A region is an area of memory declared with the - MEMORY { name:org=exp, len=exp ... } - syntax. - - We maintain a list of all the regions here - - If no regions are specified in the script, then the default is used - which is created when looked up to be the entire data space -*/ - -static lang_memory_region_type *lang_memory_region_list; -static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list; - -lang_memory_region_type * -lang_memory_region_lookup (name) - CONST char *CONST name; -{ - lang_memory_region_type *p; - - for (p = lang_memory_region_list; - p != (lang_memory_region_type *) NULL; - p = p->next) - { - if (strcmp (p->name, name) == 0) - { - return p; - } - } - -#if 0 - /* This code used to always use the first region in the list as the - default region. I changed it to instead use a region - encompassing all of memory as the default region. This permits - NOLOAD sections to work reasonably without requiring a region. - People should specify what region they mean, if they really want - a region. */ - if (strcmp (name, "*default*") == 0) - { - if (lang_memory_region_list != (lang_memory_region_type *) NULL) - { - return lang_memory_region_list; - } - } -#endif - - { - lang_memory_region_type *new = - (lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type)); - - new->name = buystring (name); - new->next = (lang_memory_region_type *) NULL; - - *lang_memory_region_list_tail = new; - lang_memory_region_list_tail = &new->next; - new->origin = 0; - new->flags = 0; - new->not_flags = 0; - new->length = ~(bfd_size_type)0; - new->current = 0; - new->had_full_message = false; - - return new; - } -} - - -lang_memory_region_type * -lang_memory_default (section) - asection *section; -{ - lang_memory_region_type *p; - - flagword sec_flags = section->flags; - - /* Override SEC_DATA to mean a writable section. */ - if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC) - sec_flags |= SEC_DATA; - - for (p = lang_memory_region_list; - p != (lang_memory_region_type *) NULL; - p = p->next) - { - if ((p->flags & sec_flags) != 0 - && (p->not_flags & sec_flags) == 0) - { - return p; - } - } - return lang_memory_region_lookup ("*default*"); -} - -lang_output_section_statement_type * -lang_output_section_find (name) - CONST char *CONST name; -{ - lang_statement_union_type *u; - lang_output_section_statement_type *lookup; - - for (u = lang_output_section_statement.head; - u != (lang_statement_union_type *) NULL; - u = lookup->next) - { - lookup = &u->output_section_statement; - if (strcmp (name, lookup->name) == 0) - { - return lookup; - } - } - return (lang_output_section_statement_type *) NULL; -} - -lang_output_section_statement_type * -lang_output_section_statement_lookup (name) - CONST char *CONST name; -{ - lang_output_section_statement_type *lookup; - - lookup = lang_output_section_find (name); - if (lookup == (lang_output_section_statement_type *) NULL) - { - - lookup = (lang_output_section_statement_type *) - new_stat (lang_output_section_statement, stat_ptr); - lookup->region = (lang_memory_region_type *) NULL; - lookup->fill = 0; - lookup->block_value = 1; - lookup->name = name; - - lookup->next = (lang_statement_union_type *) NULL; - lookup->bfd_section = (asection *) NULL; - lookup->processed = false; - lookup->sectype = normal_section; - lookup->addr_tree = (etree_type *) NULL; - lang_list_init (&lookup->children); - - lookup->memspec = (CONST char *) NULL; - lookup->flags = 0; - lookup->subsection_alignment = -1; - lookup->section_alignment = -1; - lookup->load_base = (union etree_union *) NULL; - lookup->phdrs = NULL; - - lang_statement_append (&lang_output_section_statement, - (lang_statement_union_type *) lookup, - &lookup->next); - } - return lookup; -} - -static void -lang_map_flags (flag) - flagword flag; -{ - if (flag & SEC_ALLOC) - minfo ("a"); - - if (flag & SEC_CODE) - minfo ("x"); - - if (flag & SEC_READONLY) - minfo ("r"); - - if (flag & SEC_DATA) - minfo ("w"); - - if (flag & SEC_LOAD) - minfo ("l"); -} - -void -lang_map () -{ - lang_memory_region_type *m; - - minfo (_("\nMemory Configuration\n\n")); - fprintf (config.map_file, "%-16s %-18s %-18s %s\n", - _("Name"), _("Origin"), _("Length"), _("Attributes")); - - for (m = lang_memory_region_list; - m != (lang_memory_region_type *) NULL; - m = m->next) - { - char buf[100]; - int len; - - fprintf (config.map_file, "%-16s ", m->name); - - sprintf_vma (buf, m->origin); - minfo ("0x%s ", buf); - len = strlen (buf); - while (len < 16) - { - print_space (); - ++len; - } - - minfo ("0x%V", m->length); - if (m->flags || m->not_flags) - { -#ifndef BFD64 - minfo (" "); -#endif - if (m->flags) - { - print_space (); - lang_map_flags (m->flags); - } - - if (m->not_flags) - { - minfo (" !"); - lang_map_flags (m->not_flags); - } - } - - print_nl (); - } - - fprintf (config.map_file, _("\nLinker script and memory map\n\n")); - - print_statements (); -} - -/* Initialize an output section. */ - -static void -init_os (s) - lang_output_section_statement_type *s; -{ - section_userdata_type *new; - - if (s->bfd_section != NULL) - return; - - if (strcmp (s->name, DISCARD_SECTION_NAME) == 0) - einfo (_("%P%F: Illegal use of `%s' section"), DISCARD_SECTION_NAME); - - new = ((section_userdata_type *) - stat_alloc (sizeof (section_userdata_type))); - - s->bfd_section = bfd_get_section_by_name (output_bfd, s->name); - if (s->bfd_section == (asection *) NULL) - s->bfd_section = bfd_make_section (output_bfd, s->name); - if (s->bfd_section == (asection *) NULL) - { - einfo (_("%P%F: output format %s cannot represent section called %s\n"), - output_bfd->xvec->name, s->name); - } - s->bfd_section->output_section = s->bfd_section; - - /* We initialize an output sections output offset to minus its own */ - /* vma to allow us to output a section through itself */ - s->bfd_section->output_offset = 0; - get_userdata (s->bfd_section) = (PTR) new; - - /* If there is a base address, make sure that any sections it might - mention are initialized. */ - if (s->addr_tree != NULL) - exp_init_os (s->addr_tree); -} - -/* Make sure that all output sections mentioned in an expression are - initialized. */ - -static void -exp_init_os (exp) - etree_type *exp; -{ - switch (exp->type.node_class) - { - case etree_assign: - exp_init_os (exp->assign.src); - break; - - case etree_binary: - exp_init_os (exp->binary.lhs); - exp_init_os (exp->binary.rhs); - break; - - case etree_trinary: - exp_init_os (exp->trinary.cond); - exp_init_os (exp->trinary.lhs); - exp_init_os (exp->trinary.rhs); - break; - - case etree_unary: - exp_init_os (exp->unary.child); - break; - - case etree_name: - switch (exp->type.node_code) - { - case ADDR: - case LOADADDR: - case SIZEOF: - { - lang_output_section_statement_type *os; - - os = lang_output_section_find (exp->name.name); - if (os != NULL && os->bfd_section == NULL) - init_os (os); - } - } - break; - - default: - break; - } -} - -/* Sections marked with the SEC_LINK_ONCE flag should only be linked - once into the output. This routine checks each sections, and - arranges to discard it if a section of the same name has already - been linked. This code assumes that all relevant sections have the - SEC_LINK_ONCE flag set; that is, it does not depend solely upon the - section name. This is called via bfd_map_over_sections. */ - -/*ARGSUSED*/ -static void -section_already_linked (abfd, sec, data) - bfd *abfd; - asection *sec; - PTR data; -{ - lang_input_statement_type *entry = (lang_input_statement_type *) data; - struct sec_link_once - { - struct sec_link_once *next; - asection *sec; - }; - static struct sec_link_once *sec_link_once_list; - flagword flags; - const char *name; - struct sec_link_once *l; - - /* If we are only reading symbols from this object, then we want to - discard all sections. */ - if (entry->just_syms_flag) - { - sec->output_section = bfd_abs_section_ptr; - sec->output_offset = sec->vma; - return; - } - - flags = bfd_get_section_flags (abfd, sec); - - if ((flags & SEC_LINK_ONCE) == 0) - return; - - name = bfd_get_section_name (abfd, sec); - - for (l = sec_link_once_list; l != NULL; l = l->next) - { - if (strcmp (name, bfd_get_section_name (l->sec->owner, l->sec)) == 0) - { - /* The section has already been linked. See if we should - issue a warning. */ - switch (flags & SEC_LINK_DUPLICATES) - { - default: - abort (); - - case SEC_LINK_DUPLICATES_DISCARD: - break; - - case SEC_LINK_DUPLICATES_ONE_ONLY: - einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"), - abfd, name); - break; - - case SEC_LINK_DUPLICATES_SAME_CONTENTS: - /* FIXME: We should really dig out the contents of both - sections and memcmp them. The COFF/PE spec says that - the Microsoft linker does not implement this - correctly, so I'm not going to bother doing it - either. */ - /* Fall through. */ - case SEC_LINK_DUPLICATES_SAME_SIZE: - if (bfd_section_size (abfd, sec) - != bfd_section_size (l->sec->owner, l->sec)) - einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"), - abfd, name); - break; - } - - /* Set the output_section field so that wild_doit does not - create a lang_input_section structure for this section. */ - sec->output_section = bfd_abs_section_ptr; - - return; - } - } - - /* This is the first section with this name. Record it. */ - - l = (struct sec_link_once *) xmalloc (sizeof *l); - l->sec = sec; - l->next = sec_link_once_list; - sec_link_once_list = l; -} - -/* The wild routines. - - These expand statements like *(.text) and foo.o to a list of - explicit actions, like foo.o(.text), bar.o(.text) and - foo.o(.text, .data). */ - -/* Return true if the PATTERN argument is a wildcard pattern. - Although backslashes are treated specially if a pattern contains - wildcards, we do not consider the mere presence of a backslash to - be enough to cause the the pattern to be treated as a wildcard. - That lets us handle DOS filenames more naturally. */ - -static boolean -wildcardp (pattern) - const char *pattern; -{ - const char *s; - - for (s = pattern; *s != '\0'; ++s) - if (*s == '?' - || *s == '*' - || *s == '[') - return true; - return false; -} - -/* Add SECTION to the output section OUTPUT. Do this by creating a - lang_input_section statement which is placed at PTR. FILE is the - input file which holds SECTION. */ - -void -wild_doit (ptr, section, output, file) - lang_statement_list_type *ptr; - asection *section; - lang_output_section_statement_type *output; - lang_input_statement_type *file; -{ - flagword flags; - boolean discard; - - flags = bfd_get_section_flags (section->owner, section); - - discard = false; - - /* If we are doing a final link, discard sections marked with - SEC_EXCLUDE. */ - if (! link_info.relocateable - && (flags & SEC_EXCLUDE) != 0) - discard = true; - - /* Discard input sections which are assigned to a section named - DISCARD_SECTION_NAME. */ - if (strcmp (output->name, DISCARD_SECTION_NAME) == 0) - discard = true; - - /* Discard debugging sections if we are stripping debugging - information. */ - if ((link_info.strip == strip_debugger || link_info.strip == strip_all) - && (flags & SEC_DEBUGGING) != 0) - discard = true; - - if (discard) - { - if (section->output_section == NULL) - { - /* This prevents future calls from assigning this section. */ - section->output_section = bfd_abs_section_ptr; - } - return; - } - - if (section->output_section == NULL) - { - boolean first; - lang_input_section_type *new; - flagword flags; - - if (output->bfd_section == NULL) - { - init_os (output); - first = true; - } - else - first = false; - - /* Add a section reference to the list */ - new = new_stat (lang_input_section, ptr); - - new->section = section; - new->ifile = file; - section->output_section = output->bfd_section; - - flags = section->flags; - - /* We don't copy the SEC_NEVER_LOAD flag from an input section - to an output section, because we want to be able to include a - SEC_NEVER_LOAD section in the middle of an otherwise loaded - section (I don't know why we want to do this, but we do). - build_link_order in ldwrite.c handles this case by turning - the embedded SEC_NEVER_LOAD section into a fill. */ - - flags &= ~ SEC_NEVER_LOAD; - - /* If final link, don't copy the SEC_LINK_ONCE flags, they've - already been processed. One reason to do this is that on pe - format targets, .text$foo sections go into .text and it's odd - to see .text with SEC_LINK_ONCE set. */ - - if (! link_info.relocateable) - flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES); - - /* If this is not the first input section, and the SEC_READONLY - flag is not currently set, then don't set it just because the - input section has it set. */ - - if (! first && (section->output_section->flags & SEC_READONLY) == 0) - flags &= ~ SEC_READONLY; - - section->output_section->flags |= flags; - - /* If SEC_READONLY is not set in the input section, then clear - it from the output section. */ - if ((section->flags & SEC_READONLY) == 0) - section->output_section->flags &= ~SEC_READONLY; - - switch (output->sectype) - { - case normal_section: - break; - case dsect_section: - case copy_section: - case info_section: - case overlay_section: - output->bfd_section->flags &= ~SEC_ALLOC; - break; - case noload_section: - output->bfd_section->flags &= ~SEC_LOAD; - output->bfd_section->flags |= SEC_NEVER_LOAD; - break; - } - - if (section->alignment_power > output->bfd_section->alignment_power) - output->bfd_section->alignment_power = section->alignment_power; - - /* If supplied an aligment, then force it. */ - if (output->section_alignment != -1) - output->bfd_section->alignment_power = output->section_alignment; - } -} - -/* Handle wildcard sorting. This returns the lang_input_section which - should follow the one we are going to create for SECTION and FILE, - based on the sorting requirements of WILD. It returns NULL if the - new section should just go at the end of the current list. */ - -static lang_statement_union_type * -wild_sort (wild, file, section) - lang_wild_statement_type *wild; - lang_input_statement_type *file; - asection *section; -{ - const char *section_name; - lang_statement_union_type *l; - - if (! wild->filenames_sorted && ! wild->sections_sorted) - return NULL; - - section_name = bfd_get_section_name (file->the_bfd, section); - for (l = wild->children.head; l != NULL; l = l->next) - { - lang_input_section_type *ls; - - if (l->header.type != lang_input_section_enum) - continue; - ls = &l->input_section; - - /* Sorting by filename takes precedence over sorting by section - name. */ - - if (wild->filenames_sorted) - { - const char *fn, *ln; - boolean fa, la; - int i; - - /* The PE support for the .idata section as generated by - dlltool assumes that files will be sorted by the name of - the archive and then the name of the file within the - archive. */ - - if (file->the_bfd != NULL - && bfd_my_archive (file->the_bfd) != NULL) - { - fn = bfd_get_filename (bfd_my_archive (file->the_bfd)); - fa = true; - } - else - { - fn = file->filename; - fa = false; - } - - if (ls->ifile->the_bfd != NULL - && bfd_my_archive (ls->ifile->the_bfd) != NULL) - { - ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd)); - la = true; - } - else - { - ln = ls->ifile->filename; - la = false; - } - - i = strcmp (fn, ln); - if (i > 0) - continue; - else if (i < 0) - break; - - if (fa || la) - { - if (fa) - fn = file->filename; - if (la) - ln = ls->ifile->filename; - - i = strcmp (fn, ln); - if (i > 0) - continue; - else if (i < 0) - break; - } - } - - /* Here either the files are not sorted by name, or we are - looking at the sections for this file. */ - - if (wild->sections_sorted) - { - if (strcmp (section_name, - bfd_get_section_name (ls->ifile->the_bfd, - ls->section)) - < 0) - break; - } - } - - return l; -} - -/* Expand a wild statement for a particular FILE. SECTION may be - NULL, in which case it is a wild card. */ - -static void -output_section_callback (ptr, section, file, output) - lang_wild_statement_type *ptr; - asection *section; - lang_input_statement_type *file; - void *output; -{ - lang_statement_union_type *before; - - /* If the wild pattern was marked KEEP, the member sections - should be as well. */ - if (ptr->keep_sections) - section->flags |= SEC_KEEP; - - before = wild_sort (ptr, file, section); - - /* Here BEFORE points to the lang_input_section which - should follow the one we are about to add. If BEFORE - is NULL, then the section should just go at the end - of the current list. */ - - if (before == NULL) - wild_doit (&ptr->children, section, - (lang_output_section_statement_type *) output, - file); - else - { - lang_statement_list_type list; - lang_statement_union_type **pp; - - lang_list_init (&list); - wild_doit (&list, section, - (lang_output_section_statement_type *) output, - file); - - /* If we are discarding the section, LIST.HEAD will - be NULL. */ - if (list.head != NULL) - { - ASSERT (list.head->next == NULL); - - for (pp = &ptr->children.head; - *pp != before; - pp = &(*pp)->next) - ASSERT (*pp != NULL); - - list.head->next = *pp; - *pp = list.head; - } - } -} - -/* This is passed a file name which must have been seen already and - added to the statement tree. We will see if it has been opened - already and had its symbols read. If not then we'll read it. */ - -static lang_input_statement_type * -lookup_name (name) - const char *name; -{ - lang_input_statement_type *search; - - for (search = (lang_input_statement_type *) input_file_chain.head; - search != (lang_input_statement_type *) NULL; - search = (lang_input_statement_type *) search->next_real_file) - { - if (search->filename == (char *) NULL && name == (char *) NULL) - return search; - if (search->filename != (char *) NULL - && name != (char *) NULL - && strcmp (search->filename, name) == 0) - break; - } - - if (search == (lang_input_statement_type *) NULL) - search = new_afile (name, lang_input_file_is_file_enum, default_target, - false); - - /* If we have already added this file, or this file is not real - (FIXME: can that ever actually happen?) or the name is NULL - (FIXME: can that ever actually happen?) don't add this file. */ - if (search->loaded - || ! search->real - || search->filename == (const char *) NULL) - return search; - - load_symbols (search, (lang_statement_list_type *) NULL); - - return search; -} - -/* Get the symbols for an input file. */ - -static void -load_symbols (entry, place) - lang_input_statement_type *entry; - lang_statement_list_type *place; -{ - char **matching; - - if (entry->loaded) - return; - - ldfile_open_file (entry); - - if (! bfd_check_format (entry->the_bfd, bfd_archive) - && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching)) - { - bfd_error_type err; - lang_statement_list_type *hold; - - err = bfd_get_error (); - if (err == bfd_error_file_ambiguously_recognized) - { - char **p; - - einfo (_("%B: file not recognized: %E\n"), entry->the_bfd); - einfo (_("%B: matching formats:"), entry->the_bfd); - for (p = matching; *p != NULL; p++) - einfo (" %s", *p); - einfo ("%F\n"); - } - else if (err != bfd_error_file_not_recognized - || place == NULL) - einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd); - - bfd_close (entry->the_bfd); - entry->the_bfd = NULL; - - /* See if the emulation has some special knowledge. */ - - if (ldemul_unrecognized_file (entry)) - return; - - /* Try to interpret the file as a linker script. */ - - ldfile_open_command_file (entry->filename); - - hold = stat_ptr; - stat_ptr = place; - - ldfile_assumed_script = true; - parser_input = input_script; - yyparse (); - ldfile_assumed_script = false; - - stat_ptr = hold; - - return; - } - - if (ldemul_recognized_file (entry)) - return; - - /* We don't call ldlang_add_file for an archive. Instead, the - add_symbols entry point will call ldlang_add_file, via the - add_archive_element callback, for each element of the archive - which is used. */ - switch (bfd_get_format (entry->the_bfd)) - { - default: - break; - - case bfd_object: - ldlang_add_file (entry); - if (trace_files || trace_file_tries) - info_msg ("%I\n", entry); - break; - - case bfd_archive: - if (entry->whole_archive) - { - bfd *member = bfd_openr_next_archived_file (entry->the_bfd, - (bfd *) NULL); - while (member != NULL) - { - if (! bfd_check_format (member, bfd_object)) - einfo (_("%F%B: object %B in archive is not object\n"), - entry->the_bfd, member); - if (! ((*link_info.callbacks->add_archive_element) - (&link_info, member, "--whole-archive"))) - abort (); - if (! bfd_link_add_symbols (member, &link_info)) - einfo (_("%F%B: could not read symbols: %E\n"), member); - member = bfd_openr_next_archived_file (entry->the_bfd, - member); - } - - entry->loaded = true; - - return; - } - } - - if (! bfd_link_add_symbols (entry->the_bfd, &link_info)) - einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd); - - entry->loaded = true; -} - - - -/* Handle a wild statement. SECTION or FILE or both may be NULL, - indicating that it is a wildcard. Separate lang_input_section - statements are created for each part of the expansion; they are - added after the wild statement S. OUTPUT is the output section. */ - -static void -wild (s, section, file, target, output) - lang_wild_statement_type *s; - const char *section; - const char *file; - const char *target; - lang_output_section_statement_type *output; -{ - walk_wild (s, section, file, output_section_callback, (void *) output); - - if (section != (char *) NULL - && strcmp (section, "COMMON") == 0 - && default_common_section == NULL) - { - /* Remember the section that common is going to in case we later - get something which doesn't know where to put it. */ - default_common_section = output; - } -} - -/* Open the output file. */ - -static bfd * -open_output (name) - const char *name; -{ - bfd *output; - - if (output_target == (char *) NULL) - { - if (current_target != (char *) NULL) - output_target = current_target; - else - output_target = default_target; - } - output = bfd_openw (name, output_target); - - if (output == (bfd *) NULL) - { - if (bfd_get_error () == bfd_error_invalid_target) - { - einfo (_("%P%F: target %s not found\n"), output_target); - } - einfo (_("%P%F: cannot open output file %s: %E\n"), name); - } - - delete_output_file_on_failure = true; - - /* output->flags |= D_PAGED;*/ - - if (! bfd_set_format (output, bfd_object)) - einfo (_("%P%F:%s: can not make object file: %E\n"), name); - if (! bfd_set_arch_mach (output, - ldfile_output_architecture, - ldfile_output_machine)) - einfo (_("%P%F:%s: can not set architecture: %E\n"), name); - - link_info.hash = bfd_link_hash_table_create (output); - if (link_info.hash == (struct bfd_link_hash_table *) NULL) - einfo (_("%P%F: can not create link hash table: %E\n")); - - bfd_set_gp_size (output, g_switch_value); - return output; -} - - - - -static void -ldlang_open_output (statement) - lang_statement_union_type * statement; -{ - switch (statement->header.type) - { - case lang_output_statement_enum: - ASSERT (output_bfd == (bfd *) NULL); - output_bfd = open_output (statement->output_statement.name); - ldemul_set_output_arch (); - if (config.magic_demand_paged && !link_info.relocateable) - output_bfd->flags |= D_PAGED; - else - output_bfd->flags &= ~D_PAGED; - if (config.text_read_only) - output_bfd->flags |= WP_TEXT; - else - output_bfd->flags &= ~WP_TEXT; - if (link_info.traditional_format) - output_bfd->flags |= BFD_TRADITIONAL_FORMAT; - else - output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT; - break; - - case lang_target_statement_enum: - current_target = statement->target_statement.target; - break; - default: - break; - } -} - -/* Open all the input files. */ - -static void -open_input_bfds (s, force) - lang_statement_union_type *s; - boolean force; -{ - for (; s != (lang_statement_union_type *) NULL; s = s->next) - { - switch (s->header.type) - { - case lang_constructors_statement_enum: - open_input_bfds (constructor_list.head, force); - break; - case lang_output_section_statement_enum: - open_input_bfds (s->output_section_statement.children.head, force); - break; - case lang_wild_statement_enum: - /* Maybe we should load the file's symbols */ - if (s->wild_statement.filename - && ! wildcardp (s->wild_statement.filename)) - (void) lookup_name (s->wild_statement.filename); - open_input_bfds (s->wild_statement.children.head, force); - break; - case lang_group_statement_enum: - { - struct bfd_link_hash_entry *undefs; - - /* We must continually search the entries in the group - until no new symbols are added to the list of undefined - symbols. */ - - do - { - undefs = link_info.hash->undefs_tail; - open_input_bfds (s->group_statement.children.head, true); - } - while (undefs != link_info.hash->undefs_tail); - } - break; - case lang_target_statement_enum: - current_target = s->target_statement.target; - break; - case lang_input_statement_enum: - if (s->input_statement.real == true) - { - lang_statement_list_type add; - - s->input_statement.target = current_target; - - /* If we are being called from within a group, and this - is an archive which has already been searched, then - force it to be researched. */ - if (force - && s->input_statement.loaded - && bfd_check_format (s->input_statement.the_bfd, - bfd_archive)) - s->input_statement.loaded = false; - - lang_list_init (&add); - - load_symbols (&s->input_statement, &add); - - if (add.head != NULL) - { - *add.tail = s->next; - s->next = add.head; - } - } - break; - default: - break; - } - } -} - -/* If there are [COMMONS] statements, put a wild one into the bss section */ - -static void -lang_reasonable_defaults () -{ -#if 0 - lang_output_section_statement_lookup (".text"); - lang_output_section_statement_lookup (".data"); - - default_common_section = - lang_output_section_statement_lookup (".bss"); - - - if (placed_commons == false) - { - lang_wild_statement_type *new = - new_stat (lang_wild_statement, - &default_common_section->children); - - new->section_name = "COMMON"; - new->filename = (char *) NULL; - lang_list_init (&new->children); - } -#endif - -} - -/* - Add the supplied name to the symbol table as an undefined reference. - Remove items from the chain as we open input bfds - */ -typedef struct ldlang_undef_chain_list -{ - struct ldlang_undef_chain_list *next; - char *name; -} ldlang_undef_chain_list_type; - -static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head; - -void -ldlang_add_undef (name) - CONST char *CONST name; -{ - ldlang_undef_chain_list_type *new = - ((ldlang_undef_chain_list_type *) - stat_alloc (sizeof (ldlang_undef_chain_list_type))); - - new->next = ldlang_undef_chain_list_head; - ldlang_undef_chain_list_head = new; - - new->name = buystring (name); -} - -/* Run through the list of undefineds created above and place them - into the linker hash table as undefined symbols belonging to the - script file. -*/ -static void -lang_place_undefineds () -{ - ldlang_undef_chain_list_type *ptr; - - for (ptr = ldlang_undef_chain_list_head; - ptr != (ldlang_undef_chain_list_type *) NULL; - ptr = ptr->next) - { - struct bfd_link_hash_entry *h; - - h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true); - if (h == (struct bfd_link_hash_entry *) NULL) - einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); - if (h->type == bfd_link_hash_new) - { - h->type = bfd_link_hash_undefined; - h->u.undef.abfd = NULL; - bfd_link_add_undef (link_info.hash, h); - } - } -} - -/* Open input files and attatch to output sections */ -static void -map_input_to_output_sections (s, target, output_section_statement) - lang_statement_union_type * s; - CONST char *target; - lang_output_section_statement_type * output_section_statement; -{ - for (; s != (lang_statement_union_type *) NULL; s = s->next) - { - switch (s->header.type) - { - - - case lang_wild_statement_enum: - wild (&s->wild_statement, s->wild_statement.section_name, - s->wild_statement.filename, target, - output_section_statement); - - break; - case lang_constructors_statement_enum: - map_input_to_output_sections (constructor_list.head, - target, - output_section_statement); - break; - case lang_output_section_statement_enum: - map_input_to_output_sections (s->output_section_statement.children.head, - target, - &s->output_section_statement); - break; - case lang_output_statement_enum: - break; - case lang_target_statement_enum: - target = s->target_statement.target; - break; - case lang_group_statement_enum: - map_input_to_output_sections (s->group_statement.children.head, - target, - output_section_statement); - break; - case lang_fill_statement_enum: - case lang_input_section_enum: - case lang_object_symbols_statement_enum: - case lang_data_statement_enum: - case lang_reloc_statement_enum: - case lang_padding_statement_enum: - case lang_input_statement_enum: - if (output_section_statement != NULL - && output_section_statement->bfd_section == NULL) - init_os (output_section_statement); - break; - case lang_assignment_statement_enum: - if (output_section_statement != NULL - && output_section_statement->bfd_section == NULL) - init_os (output_section_statement); - - /* Make sure that any sections mentioned in the assignment - are initialized. */ - exp_init_os (s->assignment_statement.exp); - break; - case lang_afile_asection_pair_statement_enum: - FAIL (); - break; - case lang_address_statement_enum: - /* Mark the specified section with the supplied address */ - { - lang_output_section_statement_type *os = - lang_output_section_statement_lookup - (s->address_statement.section_name); - - if (os->bfd_section == NULL) - init_os (os); - os->addr_tree = s->address_statement.address; - } - break; - } - } -} - -static void -print_output_section_statement (output_section_statement) - lang_output_section_statement_type * output_section_statement; -{ - asection *section = output_section_statement->bfd_section; - int len; - - if (output_section_statement != abs_output_section) - { - minfo ("\n%s", output_section_statement->name); - - if (section != NULL) - { - print_dot = section->vma; - - len = strlen (output_section_statement->name); - if (len >= SECTION_NAME_MAP_LENGTH - 1) - { - print_nl (); - len = 0; - } - while (len < SECTION_NAME_MAP_LENGTH) - { - print_space (); - ++len; - } - - minfo ("0x%V %W", section->vma, section->_raw_size); - - if (output_section_statement->load_base != NULL) - { - bfd_vma addr; - - addr = exp_get_abs_int (output_section_statement->load_base, 0, - "load base", lang_final_phase_enum); - minfo (_(" load address 0x%V"), addr); - } - } - - print_nl (); - } - - print_statement_list (output_section_statement->children.head, - output_section_statement); -} - -static void -print_assignment (assignment, output_section) - lang_assignment_statement_type * assignment; - lang_output_section_statement_type * output_section; -{ - int i; - etree_value_type result; - - for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) - print_space (); - - result = exp_fold_tree (assignment->exp->assign.src, output_section, - lang_final_phase_enum, print_dot, &print_dot); - if (result.valid_p) - minfo ("0x%V", result.value + result.section->bfd_section->vma); - else - { - minfo ("*undef* "); -#ifdef BFD64 - minfo (" "); -#endif - } - - minfo (" "); - - exp_print_tree (assignment->exp); - - print_nl (); -} - -static void -print_input_statement (statm) - lang_input_statement_type * statm; -{ - if (statm->filename != (char *) NULL) - { - fprintf (config.map_file, "LOAD %s\n", statm->filename); - } -} - -/* Print all symbols defined in a particular section. This is called - via bfd_link_hash_traverse. */ - -static boolean -print_one_symbol (hash_entry, ptr) - struct bfd_link_hash_entry *hash_entry; - PTR ptr; -{ - asection *sec = (asection *) ptr; - - if ((hash_entry->type == bfd_link_hash_defined - || hash_entry->type == bfd_link_hash_defweak) - && sec == hash_entry->u.def.section) - { - int i; - - for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) - print_space (); - minfo ("0x%V ", - (hash_entry->u.def.value - + hash_entry->u.def.section->output_offset - + hash_entry->u.def.section->output_section->vma)); - - minfo (" %T\n", hash_entry->root.string); - } - - return true; -} - -/* Print information about an input section to the map file. */ - -static void -print_input_section (in) - lang_input_section_type * in; -{ - asection *i = in->section; - bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size; - - if (size != 0) - { - print_space (); - - minfo ("%s", i->name); - - if (i->output_section != NULL) - { - int len; - - len = 1 + strlen (i->name); - if (len >= SECTION_NAME_MAP_LENGTH - 1) - { - print_nl (); - len = 0; - } - while (len < SECTION_NAME_MAP_LENGTH) - { - print_space (); - ++len; - } - - minfo ("0x%V %W %B\n", - i->output_section->vma + i->output_offset, size, - i->owner); - - if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size) - { - len = SECTION_NAME_MAP_LENGTH + 3; -#ifdef BFD64 - len += 16; -#else - len += 8; -#endif - while (len > 0) - { - print_space (); - --len; - } - - minfo (_("%W (size before relaxing)\n"), i->_raw_size); - } - - bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i); - - print_dot = i->output_section->vma + i->output_offset + size; - } - } -} - -static void -print_fill_statement (fill) - lang_fill_statement_type * fill; -{ - fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill); -} - -static void -print_data_statement (data) - lang_data_statement_type * data; -{ - int i; - bfd_vma addr; - bfd_size_type size; - const char *name; - - for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) - print_space (); - - addr = data->output_vma; - if (data->output_section != NULL) - addr += data->output_section->vma; - - switch (data->type) - { - default: - abort (); - case BYTE: - size = BYTE_SIZE; - name = "BYTE"; - break; - case SHORT: - size = SHORT_SIZE; - name = "SHORT"; - break; - case LONG: - size = LONG_SIZE; - name = "LONG"; - break; - case QUAD: - size = QUAD_SIZE; - name = "QUAD"; - break; - case SQUAD: - size = QUAD_SIZE; - name = "SQUAD"; - break; - } - - minfo ("0x%V %W %s 0x%v", addr, size, name, data->value); - - if (data->exp->type.node_class != etree_value) - { - print_space (); - exp_print_tree (data->exp); - } - - print_nl (); - - print_dot = addr + size; -} - -/* Print an address statement. These are generated by options like - -Ttext. */ - -static void -print_address_statement (address) - lang_address_statement_type *address; -{ - minfo (_("Address of section %s set to "), address->section_name); - exp_print_tree (address->address); - print_nl (); -} - -/* Print a reloc statement. */ - -static void -print_reloc_statement (reloc) - lang_reloc_statement_type *reloc; -{ - int i; - bfd_vma addr; - bfd_size_type size; - - for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++) - print_space (); - - addr = reloc->output_vma; - if (reloc->output_section != NULL) - addr += reloc->output_section->vma; - - size = bfd_get_reloc_size (reloc->howto); - - minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name); - - if (reloc->name != NULL) - minfo ("%s+", reloc->name); - else - minfo ("%s+", reloc->section->name); - - exp_print_tree (reloc->addend_exp); - - print_nl (); - - print_dot = addr + size; -} - -static void -print_padding_statement (s) - lang_padding_statement_type *s; -{ - int len; - bfd_vma addr; - - minfo (" *fill*"); - - len = sizeof " *fill*" - 1; - while (len < SECTION_NAME_MAP_LENGTH) - { - print_space (); - ++len; - } - - addr = s->output_offset; - if (s->output_section != NULL) - addr += s->output_section->vma; - minfo ("0x%V %W", addr, s->size); - - if (s->fill != 0) - minfo (" %u", s->fill); - - print_nl (); - - print_dot = addr + s->size; -} - -static void -print_wild_statement (w, os) - lang_wild_statement_type * w; - lang_output_section_statement_type * os; -{ - print_space (); - - if (w->filenames_sorted) - minfo ("SORT("); - if (w->exclude_filename != NULL) - minfo ("EXCLUDE_FILE ( %s )", w->exclude_filename); - if (w->filename != NULL) - minfo ("%s", w->filename); - else - minfo ("*"); - if (w->filenames_sorted) - minfo (")"); - - minfo ("("); - if (w->sections_sorted) - minfo ("SORT("); - if (w->section_name != NULL) - minfo ("%s", w->section_name); - else - minfo ("*"); - if (w->sections_sorted) - minfo (")"); - minfo (")"); - - print_nl (); - - print_statement_list (w->children.head, os); -} - -/* Print a group statement. */ - -static void -print_group (s, os) - lang_group_statement_type *s; - lang_output_section_statement_type *os; -{ - fprintf (config.map_file, "START GROUP\n"); - print_statement_list (s->children.head, os); - fprintf (config.map_file, "END GROUP\n"); -} - -/* Print the list of statements in S. - This can be called for any statement type. */ - -static void -print_statement_list (s, os) - lang_statement_union_type *s; - lang_output_section_statement_type *os; -{ - while (s != NULL) - { - print_statement (s, os); - s = s->next; - } -} - -/* Print the first statement in statement list S. - This can be called for any statement type. */ - -static void -print_statement (s, os) - lang_statement_union_type *s; - lang_output_section_statement_type *os; -{ - switch (s->header.type) - { - default: - fprintf (config.map_file, _("Fail with %d\n"), s->header.type); - FAIL (); - break; - case lang_constructors_statement_enum: - if (constructor_list.head != NULL) - { - if (constructors_sorted) - minfo (" SORT (CONSTRUCTORS)\n"); - else - minfo (" CONSTRUCTORS\n"); - print_statement_list (constructor_list.head, os); - } - break; - case lang_wild_statement_enum: - print_wild_statement (&s->wild_statement, os); - break; - case lang_address_statement_enum: - print_address_statement (&s->address_statement); - break; - case lang_object_symbols_statement_enum: - minfo (" CREATE_OBJECT_SYMBOLS\n"); - break; - case lang_fill_statement_enum: - print_fill_statement (&s->fill_statement); - break; - case lang_data_statement_enum: - print_data_statement (&s->data_statement); - break; - case lang_reloc_statement_enum: - print_reloc_statement (&s->reloc_statement); - break; - case lang_input_section_enum: - print_input_section (&s->input_section); - break; - case lang_padding_statement_enum: - print_padding_statement (&s->padding_statement); - break; - case lang_output_section_statement_enum: - print_output_section_statement (&s->output_section_statement); - break; - case lang_assignment_statement_enum: - print_assignment (&s->assignment_statement, os); - break; - case lang_target_statement_enum: - fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target); - break; - case lang_output_statement_enum: - minfo ("OUTPUT(%s", s->output_statement.name); - if (output_target != NULL) - minfo (" %s", output_target); - minfo (")\n"); - break; - case lang_input_statement_enum: - print_input_statement (&s->input_statement); - break; - case lang_group_statement_enum: - print_group (&s->group_statement, os); - break; - case lang_afile_asection_pair_statement_enum: - FAIL (); - break; - } -} - -static void -print_statements () -{ - print_statement_list (statement_list.head, abs_output_section); -} - -/* Print the first N statements in statement list S to STDERR. - If N == 0, nothing is printed. - If N < 0, the entire list is printed. - Intended to be called from GDB. */ - -void -dprint_statement (s, n) - lang_statement_union_type * s; - int n; -{ - FILE *map_save = config.map_file; - - config.map_file = stderr; - - if (n < 0) - print_statement_list (s, abs_output_section); - else - { - while (s && --n >= 0) - { - print_statement (s, abs_output_section); - s = s->next; - } - } - - config.map_file = map_save; -} - -static bfd_vma -insert_pad (this_ptr, fill, power, output_section_statement, dot) - lang_statement_union_type ** this_ptr; - fill_type fill; - unsigned int power; - asection * output_section_statement; - bfd_vma dot; -{ - /* Align this section first to the - input sections requirement, then - to the output section's requirement. - If this alignment is > than any seen before, - then record it too. Perform the alignment by - inserting a magic 'padding' statement. - */ - - unsigned int alignment_needed = align_power (dot, power) - dot; - - if (alignment_needed != 0) - { - lang_statement_union_type *new = - ((lang_statement_union_type *) - stat_alloc (sizeof (lang_padding_statement_type))); - - /* Link into existing chain */ - new->header.next = *this_ptr; - *this_ptr = new; - new->header.type = lang_padding_statement_enum; - new->padding_statement.output_section = output_section_statement; - new->padding_statement.output_offset = - dot - output_section_statement->vma; - new->padding_statement.fill = fill; - new->padding_statement.size = alignment_needed; - } - - - /* Remember the most restrictive alignment */ - if (power > output_section_statement->alignment_power) - { - output_section_statement->alignment_power = power; - } - output_section_statement->_raw_size += alignment_needed; - return alignment_needed + dot; - -} - -/* Work out how much this section will move the dot point */ -static bfd_vma -size_input_section (this_ptr, output_section_statement, fill, dot, relax) - lang_statement_union_type ** this_ptr; - lang_output_section_statement_type * output_section_statement; - fill_type fill; - bfd_vma dot; - boolean relax; -{ - lang_input_section_type *is = &((*this_ptr)->input_section); - asection *i = is->section; - - if (is->ifile->just_syms_flag == false) - { - if (output_section_statement->subsection_alignment != -1) - i->alignment_power = - output_section_statement->subsection_alignment; - - dot = insert_pad (this_ptr, fill, i->alignment_power, - output_section_statement->bfd_section, dot); - - /* Remember where in the output section this input section goes */ - - i->output_offset = dot - output_section_statement->bfd_section->vma; - - /* Mark how big the output section must be to contain this now - */ - if (i->_cooked_size != 0) - dot += i->_cooked_size; - else - dot += i->_raw_size; - output_section_statement->bfd_section->_raw_size = dot - output_section_statement->bfd_section->vma; - } - else - { - i->output_offset = i->vma - output_section_statement->bfd_section->vma; - } - - return dot; -} - -/* Check to see if any allocated sections overlap with other allocated - sections. This can happen when the linker script specifically specifies - the output section addresses of the two sections. */ -static void -lang_check_section_addresses () -{ - asection * s; - - /* Scan all sections in the output list. */ - for (s = output_bfd->sections; s != NULL; s = s->next) - /* Ignore sections which are not loaded or which have no contents. */ - if ((bfd_get_section_flags (output_bfd, s) & (SEC_ALLOC | SEC_LOAD)) - && bfd_section_size (output_bfd, s) != 0) - { - asection * os; - - /* Once we reach section 's' stop our seach. This prevents two - warning messages from being produced, one for 'section A overlaps - section B' and one for 'section B overlaps section A'. */ - for (os = output_bfd->sections; os != s; os = os->next) - { - bfd_vma s_start; - bfd_vma s_end; - bfd_vma os_start; - bfd_vma os_end; - - /* Only consider loadable sections with real contents. */ - if (((bfd_get_section_flags (output_bfd, os) - & (SEC_ALLOC | SEC_LOAD)) == 0) - || bfd_section_size (output_bfd, os) == 0) - continue; - - /* We must check the sections' LMA addresses not their - VMA addresses because overlay sections can have - overlapping VMAs but they must have distinct LMAs. */ - s_start = bfd_section_lma (output_bfd, s); - os_start = bfd_section_lma (output_bfd, os); - s_end = s_start + bfd_section_size (output_bfd, s) - 1; - os_end = os_start + bfd_section_size (output_bfd, os) - 1; - - /* Look for an overlap. */ - if ((s_end < os_start) || (s_start > os_end)) - continue; - - einfo ( -_("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"), - s->name, s_start, s_end, os->name, os_start, os_end); - - /* Once we have found one overlap for this section, - stop looking for others. */ - break; - } - } -} - -/* This variable indicates whether bfd_relax_section should be called - again. */ - -static boolean relax_again; - -/* Set the sizes for all the output sections. */ - -bfd_vma -lang_size_sections (s, output_section_statement, prev, fill, dot, relax) - lang_statement_union_type * s; - lang_output_section_statement_type * output_section_statement; - lang_statement_union_type ** prev; - fill_type fill; - bfd_vma dot; - boolean relax; -{ - /* Size up the sections from their constituent parts. */ - for (; s != (lang_statement_union_type *) NULL; s = s->next) - { - switch (s->header.type) - { - case lang_output_section_statement_enum: - { - bfd_vma after; - lang_output_section_statement_type *os = &s->output_section_statement; - - if (os->bfd_section == NULL) - /* This section was never actually created. */ - break; - - /* If this is a COFF shared library section, use the size and - address from the input section. FIXME: This is COFF - specific; it would be cleaner if there were some other way - to do this, but nothing simple comes to mind. */ - if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0) - { - asection * input; - - if (os->children.head == NULL - || os->children.head->next != NULL - || os->children.head->header.type != lang_input_section_enum) - einfo (_("%P%X: Internal error on COFF shared library section %s\n"), - os->name); - - input = os->children.head->input_section.section; - bfd_set_section_vma (os->bfd_section->owner, - os->bfd_section, - bfd_section_vma (input->owner, input)); - os->bfd_section->_raw_size = input->_raw_size; - break; - } - - if (bfd_is_abs_section (os->bfd_section)) - { - /* No matter what happens, an abs section starts at zero. */ - ASSERT (os->bfd_section->vma == 0); - } - else - { - if (os->addr_tree == (etree_type *) NULL) - { - /* No address specified for this section, get one - from the region specification. */ - if (os->region == (lang_memory_region_type *) NULL - || (((bfd_get_section_flags (output_bfd, os->bfd_section) - & (SEC_ALLOC | SEC_LOAD)) != 0) - && os->region->name[0] == '*' - && strcmp (os->region->name, "*default*") == 0)) - { - os->region = lang_memory_default (os->bfd_section); - } - - /* If a loadable section is using the default memory - region, and some non default memory regions were - defined, issue a warning. */ - if ((bfd_get_section_flags (output_bfd, os->bfd_section) - & (SEC_ALLOC | SEC_LOAD)) != 0 - && ! link_info.relocateable - && strcmp (os->region->name, "*default*") == 0 - && lang_memory_region_list != NULL - && (strcmp (lang_memory_region_list->name, "*default*") != 0 - || lang_memory_region_list->next != NULL)) - einfo (_("%P: warning: no memory region specified for section `%s'\n"), - bfd_get_section_name (output_bfd, os->bfd_section)); - - dot = os->region->current; - - if (os->section_alignment == -1) - { - bfd_vma olddot; - - olddot = dot; - dot = align_power (dot, os->bfd_section->alignment_power); - - if (dot != olddot && config.warn_section_align) - einfo (_("%P: warning: changing start of section %s by %u bytes\n"), - os->name, (unsigned int) (dot - olddot)); - } - } - else - { - etree_value_type r; - - r = exp_fold_tree (os->addr_tree, - abs_output_section, - lang_allocating_phase_enum, - dot, &dot); - if (r.valid_p == false) - { - einfo (_("%F%S: non constant address expression for section %s\n"), - os->name); - } - dot = r.value + r.section->bfd_section->vma; - } - - /* The section starts here. - First, align to what the section needs. */ - - if (os->section_alignment != -1) - dot = align_power (dot, os->section_alignment); - - bfd_set_section_vma (0, os->bfd_section, dot); - - os->bfd_section->output_offset = 0; - } - - (void) lang_size_sections (os->children.head, os, &os->children.head, - os->fill, dot, relax); - - /* Ignore the size of the input sections, use the vma and size to - align against. */ - - after = ALIGN_N (os->bfd_section->vma + - os->bfd_section->_raw_size, - /* The coercion here is important, see ld.h. */ - (bfd_vma) os->block_value); - - if (bfd_is_abs_section (os->bfd_section)) - ASSERT (after == os->bfd_section->vma); - else - os->bfd_section->_raw_size = after - os->bfd_section->vma; - dot = os->bfd_section->vma + os->bfd_section->_raw_size; - os->processed = true; - - /* Update dot in the region ? - We only do this if the section is going to be allocated, - since unallocated sections do not contribute to the region's - overall size in memory. */ - if (os->region != (lang_memory_region_type *) NULL - && (bfd_get_section_flags (output_bfd, os->bfd_section) - & (SEC_ALLOC | SEC_LOAD))) - { - os->region->current = dot; - - /* Make sure this isn't silly. */ - if (os->region->current < os->region->origin - || (os->region->current - os->region->origin - > os->region->length)) - { - if (os->addr_tree != (etree_type *) NULL) - { - einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"), - os->region->current, - os->bfd_section->owner, - os->bfd_section->name, - os->region->name); - } - else - { - einfo (_("%X%P: region %s is full (%B section %s)\n"), - os->region->name, - os->bfd_section->owner, - os->bfd_section->name); - } - /* Reset the region pointer. */ - os->region->current = os->region->origin; - } - } - } - break; - - case lang_constructors_statement_enum: - dot = lang_size_sections (constructor_list.head, - output_section_statement, - &s->wild_statement.children.head, - fill, - dot, relax); - break; - - case lang_data_statement_enum: - { - unsigned int size = 0; - - s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma; - s->data_statement.output_section = - output_section_statement->bfd_section; - - switch (s->data_statement.type) - { - case QUAD: - case SQUAD: - size = QUAD_SIZE; - break; - case LONG: - size = LONG_SIZE; - break; - case SHORT: - size = SHORT_SIZE; - break; - case BYTE: - size = BYTE_SIZE; - break; - } - - dot += size; - output_section_statement->bfd_section->_raw_size += size; - /* The output section gets contents, and then we inspect for - any flags set in the input script which override any ALLOC. */ - output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS; - if (!(output_section_statement->flags & SEC_NEVER_LOAD)) { - output_section_statement->bfd_section->flags |= SEC_ALLOC | SEC_LOAD; - } - } - break; - - case lang_reloc_statement_enum: - { - int size; - - s->reloc_statement.output_vma = - dot - output_section_statement->bfd_section->vma; - s->reloc_statement.output_section = - output_section_statement->bfd_section; - size = bfd_get_reloc_size (s->reloc_statement.howto); - dot += size; - output_section_statement->bfd_section->_raw_size += size; - } - break; - - case lang_wild_statement_enum: - - dot = lang_size_sections (s->wild_statement.children.head, - output_section_statement, - &s->wild_statement.children.head, - - fill, dot, relax); - - break; - - case lang_object_symbols_statement_enum: - link_info.create_object_symbols_section = - output_section_statement->bfd_section; - break; - case lang_output_statement_enum: - case lang_target_statement_enum: - break; - case lang_input_section_enum: - { - asection *i; - - i = (*prev)->input_section.section; - if (! relax) - { - if (i->_cooked_size == 0) - i->_cooked_size = i->_raw_size; - } - else - { - boolean again; - - if (! bfd_relax_section (i->owner, i, &link_info, &again)) - einfo (_("%P%F: can't relax section: %E\n")); - if (again) - relax_again = true; - } - dot = size_input_section (prev, - output_section_statement, - output_section_statement->fill, - dot, relax); - } - break; - case lang_input_statement_enum: - break; - case lang_fill_statement_enum: - s->fill_statement.output_section = output_section_statement->bfd_section; - - fill = s->fill_statement.fill; - break; - case lang_assignment_statement_enum: - { - bfd_vma newdot = dot; - - exp_fold_tree (s->assignment_statement.exp, - output_section_statement, - lang_allocating_phase_enum, - dot, - &newdot); - - if (newdot != dot) - { - /* The assignment changed dot. Insert a pad. */ - if (output_section_statement == abs_output_section) - { - /* If we don't have an output section, then just adjust - the default memory address. */ - lang_memory_region_lookup ("*default*")->current = newdot; - } - else if (!relax) - { - lang_statement_union_type *new = - ((lang_statement_union_type *) - stat_alloc (sizeof (lang_padding_statement_type))); - - /* Link into existing chain. */ - new->header.next = *prev; - *prev = new; - new->header.type = lang_padding_statement_enum; - new->padding_statement.output_section = - output_section_statement->bfd_section; - new->padding_statement.output_offset = - dot - output_section_statement->bfd_section->vma; - new->padding_statement.fill = fill; - new->padding_statement.size = newdot - dot; - output_section_statement->bfd_section->_raw_size += - new->padding_statement.size; - } - - dot = newdot; - } - } - break; - - case lang_padding_statement_enum: - /* If we are relaxing, and this is not the first pass, some - padding statements may have been inserted during previous - passes. We may have to move the padding statement to a new - location if dot has a different value at this point in this - pass than it did at this point in the previous pass. */ - s->padding_statement.output_offset = - dot - output_section_statement->bfd_section->vma; - dot += s->padding_statement.size; - output_section_statement->bfd_section->_raw_size += - s->padding_statement.size; - break; - - case lang_group_statement_enum: - dot = lang_size_sections (s->group_statement.children.head, - output_section_statement, - &s->group_statement.children.head, - fill, dot, relax); - break; - - default: - FAIL (); - break; - - /* This can only get here when relaxing is turned on. */ - - case lang_address_statement_enum: - break; - } - prev = &s->header.next; - } - return dot; -} - -bfd_vma -lang_do_assignments (s, output_section_statement, fill, dot) - lang_statement_union_type * s; - lang_output_section_statement_type * output_section_statement; - fill_type fill; - bfd_vma dot; -{ - for (; s != (lang_statement_union_type *) NULL; s = s->next) - { - switch (s->header.type) - { - case lang_constructors_statement_enum: - dot = lang_do_assignments (constructor_list.head, - output_section_statement, - fill, - dot); - break; - - case lang_output_section_statement_enum: - { - lang_output_section_statement_type *os = - &(s->output_section_statement); - - if (os->bfd_section != NULL) - { - dot = os->bfd_section->vma; - (void) lang_do_assignments (os->children.head, os, - os->fill, dot); - dot = os->bfd_section->vma + os->bfd_section->_raw_size; - } - if (os->load_base) - { - /* If nothing has been placed into the output section then - it won't have a bfd_section. */ - if (os->bfd_section) - { - os->bfd_section->lma - = exp_get_abs_int(os->load_base, 0,"load base", lang_final_phase_enum); - } - } - } - break; - case lang_wild_statement_enum: - - dot = lang_do_assignments (s->wild_statement.children.head, - output_section_statement, - fill, dot); - - break; - - case lang_object_symbols_statement_enum: - case lang_output_statement_enum: - case lang_target_statement_enum: -#if 0 - case lang_common_statement_enum: -#endif - break; - case lang_data_statement_enum: - { - etree_value_type value; - - value = exp_fold_tree (s->data_statement.exp, - abs_output_section, - lang_final_phase_enum, dot, &dot); - s->data_statement.value = value.value; - if (value.valid_p == false) - einfo (_("%F%P: invalid data statement\n")); - } - switch (s->data_statement.type) - { - case QUAD: - case SQUAD: - dot += QUAD_SIZE; - break; - case LONG: - dot += LONG_SIZE; - break; - case SHORT: - dot += SHORT_SIZE; - break; - case BYTE: - dot += BYTE_SIZE; - break; - } - break; - - case lang_reloc_statement_enum: - { - etree_value_type value; - - value = exp_fold_tree (s->reloc_statement.addend_exp, - abs_output_section, - lang_final_phase_enum, dot, &dot); - s->reloc_statement.addend_value = value.value; - if (value.valid_p == false) - einfo (_("%F%P: invalid reloc statement\n")); - } - dot += bfd_get_reloc_size (s->reloc_statement.howto); - break; - - case lang_input_section_enum: - { - asection *in = s->input_section.section; - - if (in->_cooked_size != 0) - dot += in->_cooked_size; - else - dot += in->_raw_size; - } - break; - - case lang_input_statement_enum: - break; - case lang_fill_statement_enum: - fill = s->fill_statement.fill; - break; - case lang_assignment_statement_enum: - { - exp_fold_tree (s->assignment_statement.exp, - output_section_statement, - lang_final_phase_enum, - dot, - &dot); - } - - break; - case lang_padding_statement_enum: - dot += s->padding_statement.size; - break; - - case lang_group_statement_enum: - dot = lang_do_assignments (s->group_statement.children.head, - output_section_statement, - fill, dot); - - break; - - default: - FAIL (); - break; - case lang_address_statement_enum: - break; - } - - } - return dot; -} - -/* Fix any .startof. or .sizeof. symbols. When the assemblers see the - operator .startof. (section_name), it produces an undefined symbol - .startof.section_name. Similarly, when it sees - .sizeof. (section_name), it produces an undefined symbol - .sizeof.section_name. For all the output sections, we look for - such symbols, and set them to the correct value. */ - -static void -lang_set_startof () -{ - asection *s; - - if (link_info.relocateable) - return; - - for (s = output_bfd->sections; s != NULL; s = s->next) - { - const char *secname; - char *buf; - struct bfd_link_hash_entry *h; - - secname = bfd_get_section_name (output_bfd, s); - buf = xmalloc (10 + strlen (secname)); - - sprintf (buf, ".startof.%s", secname); - h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); - if (h != NULL && h->type == bfd_link_hash_undefined) - { - h->type = bfd_link_hash_defined; - h->u.def.value = bfd_get_section_vma (output_bfd, s); - h->u.def.section = bfd_abs_section_ptr; - } - - sprintf (buf, ".sizeof.%s", secname); - h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true); - if (h != NULL && h->type == bfd_link_hash_undefined) - { - h->type = bfd_link_hash_defined; - if (s->_cooked_size != 0) - h->u.def.value = s->_cooked_size; - else - h->u.def.value = s->_raw_size; - h->u.def.section = bfd_abs_section_ptr; - } - - free (buf); - } -} - -static void -lang_finish () -{ - struct bfd_link_hash_entry *h; - boolean warn; - - if (link_info.relocateable || link_info.shared) - warn = false; - else - warn = true; - - if (entry_symbol == (char *) NULL) - { - /* No entry has been specified. Look for start, but don't warn - if we don't find it. */ - entry_symbol = "start"; - warn = false; - } - - h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true); - if (h != (struct bfd_link_hash_entry *) NULL - && (h->type == bfd_link_hash_defined - || h->type == bfd_link_hash_defweak) - && h->u.def.section->output_section != NULL) - { - bfd_vma val; - - val = (h->u.def.value - + bfd_get_section_vma (output_bfd, - h->u.def.section->output_section) - + h->u.def.section->output_offset); - if (! bfd_set_start_address (output_bfd, val)) - einfo (_("%P%F:%s: can't set start address\n"), entry_symbol); - } - else - { - bfd_vma val; - CONST char *send; - - /* We couldn't find the entry symbol. Try parsing it as a - number. */ - val = bfd_scan_vma (entry_symbol, &send, 0); - if (*send == '\0') - { - if (! bfd_set_start_address (output_bfd, val)) - einfo (_("%P%F: can't set start address\n")); - } - else - { - asection *ts; - - /* Can't find the entry symbol, and it's not a number. Use - the first address in the text section. */ - ts = bfd_get_section_by_name (output_bfd, ".text"); - if (ts != (asection *) NULL) - { - if (warn) - einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"), - entry_symbol, bfd_get_section_vma (output_bfd, ts)); - if (! bfd_set_start_address (output_bfd, - bfd_get_section_vma (output_bfd, - ts))) - einfo (_("%P%F: can't set start address\n")); - } - else - { - if (warn) - einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"), - entry_symbol); - } - } - } -} - -/* This is a small function used when we want to ignore errors from - BFD. */ - -static void -#ifdef ANSI_PROTOTYPES -ignore_bfd_errors (const char *s, ...) -#else -ignore_bfd_errors (s) - const char *s; -#endif -{ - /* Don't do anything. */ -} - -/* Check that the architecture of all the input files is compatible - with the output file. Also call the backend to let it do any - other checking that is needed. */ - -static void -lang_check () -{ - lang_statement_union_type *file; - bfd *input_bfd; - CONST bfd_arch_info_type *compatible; - - for (file = file_chain.head; - file != (lang_statement_union_type *) NULL; - file = file->input_statement.next) - { - input_bfd = file->input_statement.the_bfd; - compatible = bfd_arch_get_compatible (input_bfd, - output_bfd); - if (compatible == NULL) - { - if (command_line.warn_mismatch) - einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"), - bfd_printable_name (input_bfd), input_bfd, - bfd_printable_name (output_bfd)); - } - else - { - bfd_error_handler_type pfn = NULL; - - /* If we aren't supposed to warn about mismatched input - files, temporarily set the BFD error handler to a - function which will do nothing. We still want to call - bfd_merge_private_bfd_data, since it may set up - information which is needed in the output file. */ - if (! command_line.warn_mismatch) - pfn = bfd_set_error_handler (ignore_bfd_errors); - if (! bfd_merge_private_bfd_data (input_bfd, output_bfd)) - { - if (command_line.warn_mismatch) - einfo (_("%E%X: failed to merge target specific data of file %B\n"), - input_bfd); - } - if (! command_line.warn_mismatch) - bfd_set_error_handler (pfn); - } - } -} - -/* Look through all the global common symbols and attach them to the - correct section. The -sort-common command line switch may be used - to roughly sort the entries by size. */ - -static void -lang_common () -{ - if (link_info.relocateable - && ! command_line.force_common_definition) - return; - - if (! config.sort_common) - bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL); - else - { - int power; - - for (power = 4; power >= 0; power--) - bfd_link_hash_traverse (link_info.hash, lang_one_common, - (PTR) &power); - } -} - -/* Place one common symbol in the correct section. */ - -static boolean -lang_one_common (h, info) - struct bfd_link_hash_entry *h; - PTR info; -{ - unsigned int power_of_two; - bfd_vma size; - asection *section; - - if (h->type != bfd_link_hash_common) - return true; - - size = h->u.c.size; - power_of_two = h->u.c.p->alignment_power; - - if (config.sort_common - && power_of_two < (unsigned int) *(int *) info) - return true; - - section = h->u.c.p->section; - - /* Increase the size of the section. */ - section->_cooked_size = ALIGN_N (section->_cooked_size, - (bfd_size_type) (1 << power_of_two)); - - /* Adjust the alignment if necessary. */ - if (power_of_two > section->alignment_power) - section->alignment_power = power_of_two; - - /* Change the symbol from common to defined. */ - h->type = bfd_link_hash_defined; - h->u.def.section = section; - h->u.def.value = section->_cooked_size; - - /* Increase the size of the section. */ - section->_cooked_size += size; - - /* Make sure the section is allocated in memory, and make sure that - it is no longer a common section. */ - section->flags |= SEC_ALLOC; - section->flags &= ~ SEC_IS_COMMON; - - if (config.map_file != NULL) - { - static boolean header_printed; - int len; - char *name; - char buf[50]; - - if (! header_printed) - { - minfo (_("\nAllocating common symbols\n")); - minfo (_("Common symbol size file\n\n")); - header_printed = true; - } - - name = demangle (h->root.string); - minfo ("%s", name); - len = strlen (name); - free (name); - - if (len >= 19) - { - print_nl (); - len = 0; - } - while (len < 20) - { - print_space (); - ++len; - } - - minfo ("0x"); - if (size <= 0xffffffff) - sprintf (buf, "%lx", (unsigned long) size); - else - sprintf_vma (buf, size); - minfo ("%s", buf); - len = strlen (buf); - - while (len < 16) - { - print_space (); - ++len; - } - - minfo ("%B\n", section->owner); - } - - return true; -} - -/* -run through the input files and ensure that every input -section has somewhere to go. If one is found without -a destination then create an input request and place it -into the statement tree. -*/ - -static void -lang_place_orphans () -{ - lang_input_statement_type *file; - - for (file = (lang_input_statement_type *) file_chain.head; - file != (lang_input_statement_type *) NULL; - file = (lang_input_statement_type *) file->next) - { - asection *s; - - for (s = file->the_bfd->sections; - s != (asection *) NULL; - s = s->next) - { - if (s->output_section == (asection *) NULL) - { - /* This section of the file is not attatched, root - around for a sensible place for it to go */ - - if (file->just_syms_flag) - { - /* We are only retrieving symbol values from this - file. We want the symbols to act as though the - values in the file are absolute. */ - s->output_section = bfd_abs_section_ptr; - s->output_offset = s->vma; - } - else if (strcmp (s->name, "COMMON") == 0) - { - /* This is a lonely common section which must have - come from an archive. We attach to the section - with the wildcard. */ - if (! link_info.relocateable - || command_line.force_common_definition) - { - if (default_common_section == NULL) - { -#if 0 - /* This message happens when using the - svr3.ifile linker script, so I have - disabled it. */ - info_msg (_("%P: no [COMMON] command, defaulting to .bss\n")); -#endif - default_common_section = - lang_output_section_statement_lookup (".bss"); - - } - wild_doit (&default_common_section->children, s, - default_common_section, file); - } - } - else if (ldemul_place_orphan (file, s)) - ; - else - { - lang_output_section_statement_type *os = - lang_output_section_statement_lookup (s->name); - - wild_doit (&os->children, s, os, file); - } - } - } - } -} - - -void -lang_set_flags (ptr, flags) - lang_memory_region_type *ptr; - CONST char *flags; -{ - flagword *ptr_flags = &ptr->flags; - - ptr->flags = ptr->not_flags = 0; - while (*flags) - { - switch (*flags) - { - case '!': - ptr_flags = (ptr_flags == &ptr->flags) ? &ptr->not_flags : &ptr->flags; - break; - - case 'A': case 'a': - *ptr_flags |= SEC_ALLOC; - break; - - case 'R': case 'r': - *ptr_flags |= SEC_READONLY; - break; - - case 'W': case 'w': - *ptr_flags |= SEC_DATA; - break; - - case 'X': case 'x': - *ptr_flags |= SEC_CODE; - break; - - case 'L': case 'l': - case 'I': case 'i': - *ptr_flags |= SEC_LOAD; - break; - - default: - einfo (_("%P%F: invalid syntax in flags\n")); - break; - } - flags++; - } -} - -/* Call a function on each input file. This function will be called - on an archive, but not on the elements. */ - -void -lang_for_each_input_file (func) - void (*func) PARAMS ((lang_input_statement_type *)); -{ - lang_input_statement_type *f; - - for (f = (lang_input_statement_type *) input_file_chain.head; - f != NULL; - f = (lang_input_statement_type *) f->next_real_file) - func (f); -} - -/* Call a function on each file. The function will be called on all - the elements of an archive which are included in the link, but will - not be called on the archive file itself. */ - -void -lang_for_each_file (func) - void (*func) PARAMS ((lang_input_statement_type *)); -{ - lang_input_statement_type *f; - - for (f = (lang_input_statement_type *) file_chain.head; - f != (lang_input_statement_type *) NULL; - f = (lang_input_statement_type *) f->next) - { - func (f); - } -} - -#if 0 - -/* Not used. */ - -void -lang_for_each_input_section (func) - void (*func) PARAMS ((bfd * ab, asection * as)); -{ - lang_input_statement_type *f; - - for (f = (lang_input_statement_type *) file_chain.head; - f != (lang_input_statement_type *) NULL; - f = (lang_input_statement_type *) f->next) - { - asection *s; - - for (s = f->the_bfd->sections; - s != (asection *) NULL; - s = s->next) - { - func (f->the_bfd, s); - } - } -} - -#endif - -void -ldlang_add_file (entry) - lang_input_statement_type * entry; -{ - bfd **pp; - - lang_statement_append (&file_chain, - (lang_statement_union_type *) entry, - &entry->next); - - /* The BFD linker needs to have a list of all input BFDs involved in - a link. */ - ASSERT (entry->the_bfd->link_next == (bfd *) NULL); - ASSERT (entry->the_bfd != output_bfd); - for (pp = &link_info.input_bfds; - *pp != (bfd *) NULL; - pp = &(*pp)->link_next) - ; - *pp = entry->the_bfd; - entry->the_bfd->usrdata = (PTR) entry; - bfd_set_gp_size (entry->the_bfd, g_switch_value); - - /* Look through the sections and check for any which should not be - included in the link. We need to do this now, so that we can - notice when the backend linker tries to report multiple - definition errors for symbols which are in sections we aren't - going to link. FIXME: It might be better to entirely ignore - symbols which are defined in sections which are going to be - discarded. This would require modifying the backend linker for - each backend which might set the SEC_LINK_ONCE flag. If we do - this, we should probably handle SEC_EXCLUDE in the same way. */ - - bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry); -} - -void -lang_add_output (name, from_script) - CONST char *name; - int from_script; -{ - /* Make -o on command line override OUTPUT in script. */ - if (had_output_filename == false || !from_script) - { - output_filename = name; - had_output_filename = true; - } -} - - -static lang_output_section_statement_type *current_section; - -static int -topower (x) - int x; -{ - unsigned int i = 1; - int l; - - if (x < 0) - return -1; - - for (l = 0; l < 32; l++) - { - if (i >= (unsigned int) x) - return l; - i <<= 1; - } - - return 0; -} - -void -lang_enter_output_section_statement (output_section_statement_name, - address_exp, sectype, block_value, - align, subalign, ebase) - const char *output_section_statement_name; - etree_type * address_exp; - enum section_type sectype; - bfd_vma block_value; - etree_type *align; - etree_type *subalign; - etree_type *ebase; -{ - lang_output_section_statement_type *os; - - current_section = - os = - lang_output_section_statement_lookup (output_section_statement_name); - - - - /* Add this statement to tree */ - /* add_statement(lang_output_section_statement_enum, - output_section_statement);*/ - /* Make next things chain into subchain of this */ - - if (os->addr_tree == - (etree_type *) NULL) - { - os->addr_tree = - address_exp; - } - os->sectype = sectype; - if (sectype != noload_section) - os->flags = SEC_NO_FLAGS; - else - os->flags = SEC_NEVER_LOAD; - os->block_value = block_value ? block_value : 1; - stat_ptr = &os->children; - - os->subsection_alignment = topower( - exp_get_value_int(subalign, -1, - "subsection alignment", - 0)); - os->section_alignment = topower( - exp_get_value_int(align, -1, - "section alignment", 0)); - - os->load_base = ebase; -} - - -void -lang_final () -{ - lang_output_statement_type *new = - new_stat (lang_output_statement, stat_ptr); - - new->name = output_filename; -} - -/* Reset the current counters in the regions */ -static void -reset_memory_regions () -{ - lang_memory_region_type *p = lang_memory_region_list; - - for (p = lang_memory_region_list; - p != (lang_memory_region_type *) NULL; - p = p->next) - { - p->old_length = (bfd_size_type) (p->current - p->origin); - p->current = p->origin; - } -} - -/* Expand a wild statement for a particular FILE, marking its sections KEEP - as needed. SECTION may be NULL, in which case it is a wild card. */ - -static void -gc_section_callback (ptr, section, file, data) - lang_wild_statement_type *ptr; - asection *section; - lang_input_statement_type *file; - void *data; -{ - /* If the wild pattern was marked KEEP, the member sections - should be as well. */ - if (ptr->keep_sections) - section->flags |= SEC_KEEP; -} - -/* Handle a wild statement, marking it against GC. SECTION or FILE or both - may be NULL, indicating that it is a wildcard. */ - -static void -lang_gc_wild (s, section, file) - lang_wild_statement_type *s; - const char *section; - const char *file; -{ - walk_wild (s, section, file, gc_section_callback, NULL); -} - -/* Iterate over sections marking them against GC. */ - -static void -lang_gc_sections_1 (s) - lang_statement_union_type * s; -{ - for (; s != (lang_statement_union_type *) NULL; s = s->next) - { - switch (s->header.type) - { - case lang_wild_statement_enum: - lang_gc_wild (&s->wild_statement, - s->wild_statement.section_name, - s->wild_statement.filename); - break; - case lang_constructors_statement_enum: - lang_gc_sections_1 (constructor_list.head); - break; - case lang_output_section_statement_enum: - lang_gc_sections_1 (s->output_section_statement.children.head); - break; - case lang_group_statement_enum: - lang_gc_sections_1 (s->group_statement.children.head); - break; - default: - break; - } - } -} - -static void -lang_gc_sections () -{ - struct bfd_link_hash_entry *h; - ldlang_undef_chain_list_type *ulist, fake_list_start; - - /* Keep all sections so marked in the link script. */ - - lang_gc_sections_1 (statement_list.head); - - /* Keep all sections containing symbols undefined on the command-line. - Handle the entry symbol at the same time. */ - - fake_list_start.next = ldlang_undef_chain_list_head; - if (entry_symbol == NULL) - fake_list_start.name = "start"; - else - fake_list_start.name = (char *) entry_symbol; - - for (ulist = &fake_list_start; ulist; ulist = ulist->next) - { - h = bfd_link_hash_lookup (link_info.hash, ulist->name, - false, false, false); - - if (h != (struct bfd_link_hash_entry *) NULL - && (h->type == bfd_link_hash_defined - || h->type == bfd_link_hash_defweak) - && ! bfd_is_abs_section (h->u.def.section)) - { - h->u.def.section->flags |= SEC_KEEP; - } - } - - bfd_gc_sections (output_bfd, &link_info); -} - -void -lang_process () -{ - lang_reasonable_defaults (); - current_target = default_target; - - lang_for_each_statement (ldlang_open_output); /* Open the output file */ - - ldemul_create_output_section_statements (); - - /* Add to the hash table all undefineds on the command line */ - lang_place_undefineds (); - - /* Create a bfd for each input file */ - current_target = default_target; - open_input_bfds (statement_list.head, false); - - ldemul_after_open (); - - /* Make sure that we're not mixing architectures. We call this - after all the input files have been opened, but before we do any - other processing, so that any operations merge_private_bfd_data - does on the output file will be known during the rest of the - link. */ - lang_check (); - - /* Handle .exports instead of a version script if we're told to do so. */ - if (command_line.version_exports_section) - lang_do_version_exports_section (); - - /* Build all sets based on the information gathered from the input - files. */ - ldctor_build_sets (); - - /* Remove unreferenced sections if asked to. */ - if (command_line.gc_sections) - lang_gc_sections (); - - /* Size up the common data */ - lang_common (); - - /* Run through the contours of the script and attach input sections - to the correct output sections - */ - map_input_to_output_sections (statement_list.head, (char *) NULL, - (lang_output_section_statement_type *) NULL); - - - /* Find any sections not attached explicitly and handle them */ - lang_place_orphans (); - - ldemul_before_allocation (); - - /* We must record the program headers before we try to fix the - section positions, since they will affect SIZEOF_HEADERS. */ - lang_record_phdrs (); - - /* Now run around and relax if we can */ - if (command_line.relax) - { - /* First time round is a trial run to get the 'worst case' - addresses of the objects if there was no relaxing. */ - lang_size_sections (statement_list.head, - abs_output_section, - &(statement_list.head), 0, (bfd_vma) 0, false); - - /* Keep relaxing until bfd_relax_section gives up. */ - do - { - reset_memory_regions (); - - relax_again = false; - - /* Note: pe-dll.c does something like this also. If you find - you need to change this code, you probably need to change - pe-dll.c also. DJ */ - - /* Do all the assignments with our current guesses as to - section sizes. */ - lang_do_assignments (statement_list.head, - abs_output_section, - (fill_type) 0, (bfd_vma) 0); - - /* Perform another relax pass - this time we know where the - globals are, so can make better guess. */ - lang_size_sections (statement_list.head, - abs_output_section, - &(statement_list.head), 0, (bfd_vma) 0, true); - } - while (relax_again); - } - else - { - /* Size up the sections. */ - lang_size_sections (statement_list.head, - abs_output_section, - &(statement_list.head), 0, (bfd_vma) 0, false); - } - - /* See if anything special should be done now we know how big - everything is. */ - ldemul_after_allocation (); - - /* Fix any .startof. or .sizeof. symbols. */ - lang_set_startof (); - - /* Do all the assignments, now that we know the final restingplaces - of all the symbols */ - - lang_do_assignments (statement_list.head, - abs_output_section, - (fill_type) 0, (bfd_vma) 0); - - /* Make sure that the section addresses make sense. */ - if (! link_info.relocateable - && command_line.check_section_addresses) - lang_check_section_addresses (); - - /* Final stuffs */ - - ldemul_finish (); - lang_finish (); -} - -/* EXPORTED TO YACC */ - -void -lang_add_wild (section_name, sections_sorted, filename, filenames_sorted, - keep_sections, exclude_filename) - const char *const section_name; - boolean sections_sorted; - const char *const filename; - boolean filenames_sorted; - boolean keep_sections; - const char *exclude_filename; -{ - lang_wild_statement_type *new = new_stat (lang_wild_statement, - stat_ptr); - - if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0) - { - placed_commons = true; - } - if (filename != NULL && ! wildcardp (filename)) - { - lang_has_input_file = true; - } - new->section_name = section_name; - new->sections_sorted = sections_sorted; - new->filename = filename; - new->filenames_sorted = filenames_sorted; - new->keep_sections = keep_sections; - new->exclude_filename = exclude_filename; - lang_list_init (&new->children); -} - -void -lang_section_start (name, address) - CONST char *name; - etree_type * address; -{ - lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr); - - ad->section_name = name; - ad->address = address; -} - -/* Set the start symbol to NAME. CMDLINE is nonzero if this is called - because of a -e argument on the command line, or zero if this is - called by ENTRY in a linker script. Command line arguments take - precedence. */ - -void -lang_add_entry (name, cmdline) - CONST char *name; - boolean cmdline; -{ - if (entry_symbol == NULL - || cmdline - || ! entry_from_cmdline) - { - entry_symbol = name; - entry_from_cmdline = cmdline; - } -} - -void -lang_add_target (name) - CONST char *name; -{ - lang_target_statement_type *new = new_stat (lang_target_statement, - stat_ptr); - - new->target = name; - -} - -void -lang_add_map (name) - CONST char *name; -{ - while (*name) - { - switch (*name) - { - case 'F': - map_option_f = true; - break; - } - name++; - } -} - -void -lang_add_fill (exp) - int exp; -{ - lang_fill_statement_type *new = new_stat (lang_fill_statement, - stat_ptr); - - new->fill = exp; -} - -void -lang_add_data (type, exp) - int type; - union etree_union *exp; -{ - - lang_data_statement_type *new = new_stat (lang_data_statement, - stat_ptr); - - new->exp = exp; - new->type = type; - -} - -/* Create a new reloc statement. RELOC is the BFD relocation type to - generate. HOWTO is the corresponding howto structure (we could - look this up, but the caller has already done so). SECTION is the - section to generate a reloc against, or NAME is the name of the - symbol to generate a reloc against. Exactly one of SECTION and - NAME must be NULL. ADDEND is an expression for the addend. */ - -void -lang_add_reloc (reloc, howto, section, name, addend) - bfd_reloc_code_real_type reloc; - reloc_howto_type *howto; - asection *section; - const char *name; - union etree_union *addend; -{ - lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr); - - p->reloc = reloc; - p->howto = howto; - p->section = section; - p->name = name; - p->addend_exp = addend; - - p->addend_value = 0; - p->output_section = NULL; - p->output_vma = 0; -} - -lang_assignment_statement_type * -lang_add_assignment (exp) - etree_type * exp; -{ - lang_assignment_statement_type *new = new_stat (lang_assignment_statement, - stat_ptr); - - new->exp = exp; - return new; -} - -void -lang_add_attribute (attribute) - enum statement_enum attribute; -{ - new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr); -} - -void -lang_startup (name) - CONST char *name; -{ - if (startup_file != (char *) NULL) - { - einfo (_("%P%Fmultiple STARTUP files\n")); - } - first_file->filename = name; - first_file->local_sym_name = name; - first_file->real = true; - - startup_file = name; -} - -void -lang_float (maybe) - boolean maybe; -{ - lang_float_flag = maybe; -} - -void -lang_leave_output_section_statement (fill, memspec, phdrs) - bfd_vma fill; - const char *memspec; - struct lang_output_section_phdr_list *phdrs; -{ - current_section->fill = fill; - current_section->region = lang_memory_region_lookup (memspec); - current_section->phdrs = phdrs; - stat_ptr = &statement_list; -} - -/* - Create an absolute symbol with the given name with the value of the - address of first byte of the section named. - - If the symbol already exists, then do nothing. -*/ -void -lang_abs_symbol_at_beginning_of (secname, name) - const char *secname; - const char *name; -{ - struct bfd_link_hash_entry *h; - - h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); - if (h == (struct bfd_link_hash_entry *) NULL) - einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); - - if (h->type == bfd_link_hash_new - || h->type == bfd_link_hash_undefined) - { - asection *sec; - - h->type = bfd_link_hash_defined; - - sec = bfd_get_section_by_name (output_bfd, secname); - if (sec == (asection *) NULL) - h->u.def.value = 0; - else - h->u.def.value = bfd_get_section_vma (output_bfd, sec); - - h->u.def.section = bfd_abs_section_ptr; - } -} - -/* - Create an absolute symbol with the given name with the value of the - address of the first byte after the end of the section named. - - If the symbol already exists, then do nothing. -*/ -void -lang_abs_symbol_at_end_of (secname, name) - const char *secname; - const char *name; -{ - struct bfd_link_hash_entry *h; - - h = bfd_link_hash_lookup (link_info.hash, name, true, true, true); - if (h == (struct bfd_link_hash_entry *) NULL) - einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); - - if (h->type == bfd_link_hash_new - || h->type == bfd_link_hash_undefined) - { - asection *sec; - - h->type = bfd_link_hash_defined; - - sec = bfd_get_section_by_name (output_bfd, secname); - if (sec == (asection *) NULL) - h->u.def.value = 0; - else - h->u.def.value = (bfd_get_section_vma (output_bfd, sec) - + bfd_section_size (output_bfd, sec)); - - h->u.def.section = bfd_abs_section_ptr; - } -} - -void -lang_statement_append (list, element, field) - lang_statement_list_type * list; - lang_statement_union_type * element; - lang_statement_union_type ** field; -{ - *(list->tail) = element; - list->tail = field; -} - -/* Set the output format type. -oformat overrides scripts. */ - -void -lang_add_output_format (format, big, little, from_script) - const char *format; - const char *big; - const char *little; - int from_script; -{ - if (output_target == NULL || !from_script) - { - if (command_line.endian == ENDIAN_BIG - && big != NULL) - format = big; - else if (command_line.endian == ENDIAN_LITTLE - && little != NULL) - format = little; - - output_target = format; - } -} - -/* Enter a group. This creates a new lang_group_statement, and sets - stat_ptr to build new statements within the group. */ - -void -lang_enter_group () -{ - lang_group_statement_type *g; - - g = new_stat (lang_group_statement, stat_ptr); - lang_list_init (&g->children); - stat_ptr = &g->children; -} - -/* Leave a group. This just resets stat_ptr to start writing to the - regular list of statements again. Note that this will not work if - groups can occur inside anything else which can adjust stat_ptr, - but currently they can't. */ - -void -lang_leave_group () -{ - stat_ptr = &statement_list; -} - -/* Add a new program header. This is called for each entry in a PHDRS - command in a linker script. */ - -void -lang_new_phdr (name, type, filehdr, phdrs, at, flags) - const char *name; - etree_type *type; - boolean filehdr; - boolean phdrs; - etree_type *at; - etree_type *flags; -{ - struct lang_phdr *n, **pp; - - n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr)); - n->next = NULL; - n->name = name; - n->type = exp_get_value_int (type, 0, "program header type", - lang_final_phase_enum); - n->filehdr = filehdr; - n->phdrs = phdrs; - n->at = at; - n->flags = flags; - - for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next) - ; - *pp = n; -} - -/* Record the program header information in the output BFD. FIXME: We - should not be calling an ELF specific function here. */ - -static void -lang_record_phdrs () -{ - unsigned int alc; - asection **secs; - struct lang_output_section_phdr_list *last; - struct lang_phdr *l; - lang_statement_union_type *u; - - alc = 10; - secs = (asection **) xmalloc (alc * sizeof (asection *)); - last = NULL; - for (l = lang_phdr_list; l != NULL; l = l->next) - { - unsigned int c; - flagword flags; - bfd_vma at; - - c = 0; - for (u = lang_output_section_statement.head; - u != NULL; - u = u->output_section_statement.next) - { - lang_output_section_statement_type *os; - struct lang_output_section_phdr_list *pl; - - os = &u->output_section_statement; - - pl = os->phdrs; - if (pl != NULL) - last = pl; - else - { - if (os->sectype == noload_section - || os->bfd_section == NULL - || (os->bfd_section->flags & SEC_ALLOC) == 0) - continue; - pl = last; - } - - if (os->bfd_section == NULL) - continue; - - for (; pl != NULL; pl = pl->next) - { - if (strcmp (pl->name, l->name) == 0) - { - if (c >= alc) - { - alc *= 2; - secs = ((asection **) - xrealloc (secs, alc * sizeof (asection *))); - } - secs[c] = os->bfd_section; - ++c; - pl->used = true; - } - } - } - - if (l->flags == NULL) - flags = 0; - else - flags = exp_get_vma (l->flags, 0, "phdr flags", - lang_final_phase_enum); - - if (l->at == NULL) - at = 0; - else - at = exp_get_vma (l->at, 0, "phdr load address", - lang_final_phase_enum); - - if (! bfd_record_phdr (output_bfd, l->type, - l->flags == NULL ? false : true, - flags, - l->at == NULL ? false : true, - at, l->filehdr, l->phdrs, c, secs)) - einfo (_("%F%P: bfd_record_phdr failed: %E\n")); - } - - free (secs); - - /* Make sure all the phdr assignments succeeded. */ - for (u = lang_output_section_statement.head; - u != NULL; - u = u->output_section_statement.next) - { - struct lang_output_section_phdr_list *pl; - - if (u->output_section_statement.bfd_section == NULL) - continue; - - for (pl = u->output_section_statement.phdrs; - pl != NULL; - pl = pl->next) - if (! pl->used && strcmp (pl->name, "NONE") != 0) - einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"), - u->output_section_statement.name, pl->name); - } -} - -/* Record a list of sections which may not be cross referenced. */ - -void -lang_add_nocrossref (l) - struct lang_nocrossref *l; -{ - struct lang_nocrossrefs *n; - - n = (struct lang_nocrossrefs *) xmalloc (sizeof *n); - n->next = nocrossref_list; - n->list = l; - nocrossref_list = n; - - /* Set notice_all so that we get informed about all symbols. */ - link_info.notice_all = true; -} - -/* Overlay handling. We handle overlays with some static variables. */ - -/* The overlay virtual address. */ -static etree_type *overlay_vma; - -/* The overlay load address. */ -static etree_type *overlay_lma; - -/* Whether nocrossrefs is set for this overlay. */ -static int overlay_nocrossrefs; - -/* An expression for the maximum section size seen so far. */ -static etree_type *overlay_max; - -/* A list of all the sections in this overlay. */ - -struct overlay_list -{ - struct overlay_list *next; - lang_output_section_statement_type *os; -}; - -static struct overlay_list *overlay_list; - -/* Start handling an overlay. */ - -void -lang_enter_overlay (vma_expr, lma_expr, nocrossrefs) - etree_type *vma_expr; - etree_type *lma_expr; - int nocrossrefs; -{ - /* The grammar should prevent nested overlays from occurring. */ - ASSERT (overlay_vma == NULL - && overlay_lma == NULL - && overlay_list == NULL - && overlay_max == NULL); - - overlay_vma = vma_expr; - overlay_lma = lma_expr; - overlay_nocrossrefs = nocrossrefs; -} - -/* Start a section in an overlay. We handle this by calling - lang_enter_output_section_statement with the correct VMA and LMA. */ - -void -lang_enter_overlay_section (name) - const char *name; -{ - struct overlay_list *n; - etree_type *size; - - lang_enter_output_section_statement (name, overlay_vma, normal_section, - 0, 0, 0, overlay_lma); - - /* If this is the first section, then base the VMA and LMA of future - sections on this one. This will work correctly even if `.' is - used in the addresses. */ - if (overlay_list == NULL) - { - overlay_vma = exp_nameop (ADDR, name); - overlay_lma = exp_nameop (LOADADDR, name); - } - - /* Remember the section. */ - n = (struct overlay_list *) xmalloc (sizeof *n); - n->os = current_section; - n->next = overlay_list; - overlay_list = n; - - size = exp_nameop (SIZEOF, name); - - /* Adjust the LMA for the next section. */ - overlay_lma = exp_binop ('+', overlay_lma, size); - - /* Arrange to work out the maximum section end address. */ - if (overlay_max == NULL) - overlay_max = size; - else - overlay_max = exp_binop (MAX_K, overlay_max, size); -} - -/* Finish a section in an overlay. There isn't any special to do - here. */ - -void -lang_leave_overlay_section (fill, phdrs) - bfd_vma fill; - struct lang_output_section_phdr_list *phdrs; -{ - const char *name; - char *clean, *s2; - const char *s1; - char *buf; - - name = current_section->name; - - lang_leave_output_section_statement (fill, "*default*", phdrs); - - /* Define the magic symbols. */ - - clean = xmalloc (strlen (name) + 1); - s2 = clean; - for (s1 = name; *s1 != '\0'; s1++) - if (isalnum ((unsigned char) *s1) || *s1 == '_') - *s2++ = *s1; - *s2 = '\0'; - - buf = xmalloc (strlen (clean) + sizeof "__load_start_"); - sprintf (buf, "__load_start_%s", clean); - lang_add_assignment (exp_assop ('=', buf, - exp_nameop (LOADADDR, name))); - - buf = xmalloc (strlen (clean) + sizeof "__load_stop_"); - sprintf (buf, "__load_stop_%s", clean); - lang_add_assignment (exp_assop ('=', buf, - exp_binop ('+', - exp_nameop (LOADADDR, name), - exp_nameop (SIZEOF, name)))); - - free (clean); -} - -/* Finish an overlay. If there are any overlay wide settings, this - looks through all the sections in the overlay and sets them. */ - -void -lang_leave_overlay (fill, memspec, phdrs) - bfd_vma fill; - const char *memspec; - struct lang_output_section_phdr_list *phdrs; -{ - lang_memory_region_type *region; - struct overlay_list *l; - struct lang_nocrossref *nocrossref; - - if (memspec == NULL) - region = NULL; - else - region = lang_memory_region_lookup (memspec); - - nocrossref = NULL; - - l = overlay_list; - while (l != NULL) - { - struct overlay_list *next; - - if (fill != 0 && l->os->fill == 0) - l->os->fill = fill; - if (region != NULL && l->os->region == NULL) - l->os->region = region; - if (phdrs != NULL && l->os->phdrs == NULL) - l->os->phdrs = phdrs; - - if (overlay_nocrossrefs) - { - struct lang_nocrossref *nc; - - nc = (struct lang_nocrossref *) xmalloc (sizeof *nc); - nc->name = l->os->name; - nc->next = nocrossref; - nocrossref = nc; - } - - next = l->next; - free (l); - l = next; - } - - if (nocrossref != NULL) - lang_add_nocrossref (nocrossref); - - /* Update . for the end of the overlay. */ - lang_add_assignment (exp_assop ('=', ".", - exp_binop ('+', overlay_vma, overlay_max))); - - overlay_vma = NULL; - overlay_lma = NULL; - overlay_nocrossrefs = 0; - overlay_list = NULL; - overlay_max = NULL; -} - -/* Version handling. This is only useful for ELF. */ - -/* This global variable holds the version tree that we build. */ - -struct bfd_elf_version_tree *lang_elf_version_info; - -static int -lang_vers_match_lang_c (expr, sym) - struct bfd_elf_version_expr *expr; - const char *sym; -{ - if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') - return 1; - return fnmatch (expr->pattern, sym, 0) == 0; -} - -static int -lang_vers_match_lang_cplusplus (expr, sym) - struct bfd_elf_version_expr *expr; - const char *sym; -{ - char *alt_sym; - int result; - - if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') - return 1; - - alt_sym = cplus_demangle(sym, /* DMGL_NO_TPARAMS */ 0); - if (!alt_sym) - { - /* cplus_demangle (also) returns NULL when it is not a C++ symbol. - Should we early out false in this case? */ - result = fnmatch (expr->pattern, sym, 0) == 0; - } - else - { - result = fnmatch (expr->pattern, alt_sym, 0) == 0; - free (alt_sym); - } - - return result; -} - -static int -lang_vers_match_lang_java (expr, sym) - struct bfd_elf_version_expr *expr; - const char *sym; -{ - char *alt_sym; - int result; - - if (expr->pattern[0] == '*' && expr->pattern[1] == '\0') - return 1; - - alt_sym = cplus_demangle(sym, DMGL_JAVA); - if (!alt_sym) - { - /* cplus_demangle (also) returns NULL when it is not a Java symbol. - Should we early out false in this case? */ - result = fnmatch (expr->pattern, sym, 0) == 0; - } - else - { - result = fnmatch (expr->pattern, alt_sym, 0) == 0; - free (alt_sym); - } - - return result; -} - -/* This is called for each variable name or match expression. */ - -struct bfd_elf_version_expr * -lang_new_vers_regex (orig, new, lang) - struct bfd_elf_version_expr *orig; - const char *new; - const char *lang; -{ - struct bfd_elf_version_expr *ret; - - ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret); - ret->next = orig; - ret->pattern = new; - - if (lang == NULL || strcasecmp (lang, "C") == 0) - ret->match = lang_vers_match_lang_c; - else if (strcasecmp (lang, "C++") == 0) - ret->match = lang_vers_match_lang_cplusplus; - else if (strcasecmp (lang, "Java") == 0) - ret->match = lang_vers_match_lang_java; - else - { - einfo (_("%X%P: unknown language `%s' in version information\n"), - lang); - ret->match = lang_vers_match_lang_c; - } - - return ret; -} - -/* This is called for each set of variable names and match - expressions. */ - -struct bfd_elf_version_tree * -lang_new_vers_node (globals, locals) - struct bfd_elf_version_expr *globals; - struct bfd_elf_version_expr *locals; -{ - struct bfd_elf_version_tree *ret; - - ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret); - ret->next = NULL; - ret->name = NULL; - ret->vernum = 0; - ret->globals = globals; - ret->locals = locals; - ret->deps = NULL; - ret->name_indx = (unsigned int) -1; - ret->used = 0; - return ret; -} - -/* This static variable keeps track of version indices. */ - -static int version_index; - -/* This is called when we know the name and dependencies of the - version. */ - -void -lang_register_vers_node (name, version, deps) - const char *name; - struct bfd_elf_version_tree *version; - struct bfd_elf_version_deps *deps; -{ - struct bfd_elf_version_tree *t, **pp; - struct bfd_elf_version_expr *e1; - - /* Make sure this node has a unique name. */ - for (t = lang_elf_version_info; t != NULL; t = t->next) - if (strcmp (t->name, name) == 0) - einfo (_("%X%P: duplicate version tag `%s'\n"), name); - - /* Check the global and local match names, and make sure there - aren't any duplicates. */ - - for (e1 = version->globals; e1 != NULL; e1 = e1->next) - { - for (t = lang_elf_version_info; t != NULL; t = t->next) - { - struct bfd_elf_version_expr *e2; - - for (e2 = t->locals; e2 != NULL; e2 = e2->next) - if (strcmp (e1->pattern, e2->pattern) == 0) - einfo (_("%X%P: duplicate expression `%s' in version information\n"), - e1->pattern); - } - } - - for (e1 = version->locals; e1 != NULL; e1 = e1->next) - { - for (t = lang_elf_version_info; t != NULL; t = t->next) - { - struct bfd_elf_version_expr *e2; - - for (e2 = t->globals; e2 != NULL; e2 = e2->next) - if (strcmp (e1->pattern, e2->pattern) == 0) - einfo (_("%X%P: duplicate expression `%s' in version information\n"), - e1->pattern); - } - } - - version->deps = deps; - version->name = name; - ++version_index; - version->vernum = version_index; - - for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next) - ; - *pp = version; -} - -/* This is called when we see a version dependency. */ - -struct bfd_elf_version_deps * -lang_add_vers_depend (list, name) - struct bfd_elf_version_deps *list; - const char *name; -{ - struct bfd_elf_version_deps *ret; - struct bfd_elf_version_tree *t; - - ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret); - ret->next = list; - - for (t = lang_elf_version_info; t != NULL; t = t->next) - { - if (strcmp (t->name, name) == 0) - { - ret->version_needed = t; - return ret; - } - } - - einfo (_("%X%P: unable to find version dependency `%s'\n"), name); - - return ret; -} - -static void -lang_do_version_exports_section () -{ - struct bfd_elf_version_expr *greg = NULL, *lreg; - - LANG_FOR_EACH_INPUT_STATEMENT (is) - { - asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports"); - char *contents, *p; - bfd_size_type len; - - if (sec == NULL) - continue; - - len = bfd_section_size (is->the_bfd, sec); - contents = xmalloc (len); - if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len)) - einfo (_("%X%P: unable to read .exports section contents"), sec); - - p = contents; - while (p < contents+len) - { - greg = lang_new_vers_regex (greg, p, NULL); - p = strchr (p, '\0') + 1; - } - - /* Do not free the contents, as we used them creating the regex. */ - - /* Do not include this section in the link. */ - bfd_set_section_flags (is->the_bfd, sec, - bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE); - } - - lreg = lang_new_vers_regex (NULL, "*", NULL); - lang_register_vers_node (command_line.version_exports_section, - lang_new_vers_node (greg, lreg), NULL); -} |