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- /* Copyright (C) 1991 Free Software Foundation, Inc.
- Written by Steve Chamberlain steve@cygnus.com
-
- 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
- #include "bfd.h"
- #include "sysdep.h"
-
- #include "config.h"
- #include "ld.h"
- #include "ldmain.h"
- #include "ldmisc.h"
- #include "ldwrite.h"
- #include "ldgram.h"
- #include "ldsym.h"
- #include "ldlang.h"
- #include "ldemul.h"
- #include "ldlex.h"
- #include "ldfile.h"
- #include "ldindr.h"
- #include "ldwarn.h"
- #include "ldctor.h"
- #include "lderror.h"
-
- /* IMPORTS */
- extern boolean lang_has_input_file;
- extern boolean trace_files;
-
- /* EXPORTS */
-
- char *default_target;
- char *output_filename = "a.out";
-
- /* Name this program was invoked by. */
- char *program_name;
-
- /* The file that we're creating */
- bfd *output_bfd = 0;
-
- extern boolean option_v;
-
- /* set if -y on the command line */
- int had_y;
-
- /* The local symbol prefix */
- char lprefix = 'L';
-
- /* Set by -G argument, for MIPS ECOFF target. */
- int g_switch_value = 8;
-
- /* Count the number of global symbols multiply defined. */
- int multiple_def_count;
-
- /* Count the number of symbols defined through common declarations.
- This count is referenced in symdef_library, linear_library, and
- modified by enter_global_ref.
-
- It is incremented when a symbol is created as a common, and
- decremented when the common declaration is overridden
-
- Another way of thinking of it is that this is a count of
- all ldsym_types with a ->scoms field */
-
- unsigned int commons_pending;
-
- /* Count the number of global symbols referenced and not defined.
- common symbols are not included in this count. */
-
- unsigned int undefined_global_sym_count;
-
- /* Count the number of warning symbols encountered. */
- int warning_count;
-
- /* have we had a load script ? */
- extern boolean had_script;
-
- /* Nonzero means print names of input files as processed. */
- boolean trace_files;
-
- /* 1 => write load map. */
- boolean write_map;
-
-
- int unix_relocate;
-
- #ifdef GNU960
- /* Indicates whether output file will be b.out (default) or coff */
- enum target_flavour output_flavor = BFD_BOUT_FORMAT;
-
- #endif
-
- /* Force the make_executable to be output, even if there are non-fatal
- errors */
- boolean force_make_executable;
-
- /* A count of the total number of local symbols ever seen - by adding
- the symbol_count field of each newly read afile.*/
-
- unsigned int total_symbols_seen;
-
- /* A count of the number of read files - the same as the number of elements
- in file_chain
- */
- unsigned int total_files_seen;
-
- /* IMPORTS */
- args_type command_line;
- ld_config_type config;
- void
- main (argc, argv)
- char **argv;
- int argc;
- {
- char *emulation;
-
- program_name = argv[0];
- output_filename = "a.out";
-
- bfd_init ();
-
- #ifdef GNU960
- {
- int i;
-
- check_v960 (argc, argv);
- emulation = "gld960";
- for (i = 1; i < argc; i++)
- {
- if (!strcmp (argv[i], "-Fcoff"))
- {
- emulation = "lnk960";
- output_flavor = BFD_COFF_FORMAT;
- break;
- }
- }
- }
- #else
- emulation = (char *) getenv (EMULATION_ENVIRON);
- #endif
-
- /* Initialize the data about options. */
-
-
- trace_files = false;
- write_map = false;
- config.relocateable_output = false;
- unix_relocate = 0;
- command_line.force_common_definition = false;
-
- init_bfd_error_vector ();
- ldsym_init ();
- ldfile_add_arch ("");
-
- config.make_executable = true;
- force_make_executable = false;
-
-
- /* Initialize the cumulative counts of symbols. */
- undefined_global_sym_count = 0;
- warning_count = 0;
- multiple_def_count = 0;
- commons_pending = 0;
-
- config.magic_demand_paged = true;
- config.text_read_only = true;
- config.make_executable = true;
- if (emulation == (char *) NULL)
- {
- emulation = DEFAULT_EMULATION;
- }
-
- ldemul_choose_mode (emulation);
- default_target = ldemul_choose_target ();
- lang_init ();
- ldemul_before_parse ();
- lang_has_input_file = false;
- parse_args (argc, argv);
-
- if (config.relocateable_output && command_line.relax)
- {
- einfo ("%P%F: -relax and -r may not be used together\n");
- }
- lang_final ();
-
- if (trace_files)
- {
- info ("%P: mode %s\n", emulation);
- }
- if (lang_has_input_file == false)
- {
- einfo ("%P%F: No input files\n");
- }
-
- ldemul_after_parse ();
-
-
- if (config.map_filename)
- {
- if (strcmp (config.map_filename, "-") == 0)
- {
- config.map_file = stdout;
- }
- else
- {
- config.map_file = fopen (config.map_filename, FOPEN_WT);
- if (config.map_file == (FILE *) NULL)
- {
- einfo ("%P%F: can't open map file %s\n",
- config.map_filename);
- }
- }
- }
-
-
- lang_process ();
-
- /* Print error messages for any missing symbols, for any warning
- symbols, and possibly multiple definitions */
-
-
- if (config.text_read_only)
- {
- /* Look for a text section and mark the readonly attribute in it */
- asection *found = bfd_get_section_by_name (output_bfd, ".text");
-
- if (found != (asection *) NULL)
- {
- found->flags |= SEC_READONLY;
- }
- }
-
- if (config.relocateable_output)
- output_bfd->flags &= ~EXEC_P;
- else
- output_bfd->flags |= EXEC_P;
-
- ldwrite ();
-
- /* Even if we're producing relocateable output, some non-fatal errors should
- be reported in the exit status. (What non-fatal errors, if any, do we
- want to ignore for relocateable output?) */
-
- if (config.make_executable == false && force_make_executable == false)
- {
- if (trace_files == true)
- {
- einfo ("%P: Link errors found, deleting executable `%s'\n",
- output_filename);
- }
-
- if (output_bfd->iostream)
- fclose ((FILE *) (output_bfd->iostream));
-
- unlink (output_filename);
- exit (1);
- }
- else
- {
- bfd_close (output_bfd);
- }
-
- exit (0);
- } /* main() */
-
- void
- Q_read_entry_symbols (desc, entry)
- bfd *desc;
- struct lang_input_statement_struct *entry;
- {
- if (entry->asymbols == (asymbol **) NULL)
- {
- bfd_size_type table_size = get_symtab_upper_bound (desc);
-
- entry->asymbols = (asymbol **) ldmalloc (table_size);
- entry->symbol_count = bfd_canonicalize_symtab (desc, entry->asymbols);
- }
- }
-
- /*
- * turn this item into a reference
- */
- void
- refize (sp, nlist_p)
- ldsym_type *sp;
- asymbol **nlist_p;
- {
- asymbol *sym = *nlist_p;
-
- sym->value = 0;
- sym->flags = 0;
- sym->section = &bfd_und_section;
- sym->udata = (PTR) (sp->srefs_chain);
- sp->srefs_chain = nlist_p;
- }
-
- /*
- This function is called for each name which is seen which has a global
- scope. It enters the name into the global symbol table in the correct
- symbol on the correct chain. Remember that each ldsym_type has three
- chains attatched, one of all definitions of a symbol, one of all
- references of a symbol and one of all common definitions of a symbol.
-
- When the function is over, the supplied is left connected to the bfd
- to which is was born, with its udata field pointing to the next member
- on the chain in which it has been inserted.
-
- A certain amount of jigery pokery is necessary since commons come
- along and upset things, we only keep one item in the common chain; the
- one with the biggest size seen sofar. When another common comes along
- it either bumps the previous definition into the ref chain, since it
- is bigger, or gets turned into a ref on the spot since the one on the
- common chain is already bigger. If a real definition comes along then
- the common gets bumped off anyway.
-
- Whilst all this is going on we keep a count of the number of multiple
- definitions seen, undefined global symbols and pending commons.
- */
-
- extern boolean relaxing;
-
- void
- DEFUN (Q_enter_global_ref, (nlist_p, name),
- asymbol ** nlist_p AND /* pointer into symbol table from incoming bfd */
- CONST char *name /* name of symbol in linker table */ )
- {
- asymbol *sym = *nlist_p;
- ldsym_type *sp;
-
- /* Lookup the name from the incoming bfd's symbol table in the
- linker's global symbol table */
-
-
- flagword this_symbol_flags = sym->flags;
-
- sp = ldsym_get (name);
-
-
- /* If this symbol already has udata, it means that something strange
- has happened.
-
- The strange thing is that we've had an undefined symbol resolved by
- an alias, but the thing the alias defined wasn't in the file. So
- the symbol got a udata entry, but the file wasn't loaded. Then
- later on the file was loaded, but we don't need to do this
- processing again */
-
-
- if (sym->udata)
- return;
-
-
- if (flag_is_constructor (this_symbol_flags))
- {
- /* Add this constructor to the list we keep */
- ldlang_add_constructor (sp);
- /* Turn any commons into refs */
- if (sp->scoms_chain != (asymbol **) NULL)
- {
- refize (sp, sp->scoms_chain);
- sp->scoms_chain = 0;
- }
-
-
- }
- else
- {
- if (bfd_is_com_section (sym->section))
- {
- /* If we have a definition of this symbol already then
- this common turns into a reference. Also we only
- ever point to the largest common, so if we
- have a common, but it's bigger that the new symbol
- the turn this into a reference too. */
- if (sp->sdefs_chain)
- {
- /* This is a common symbol, but we already have a definition
- for it, so just link it into the ref chain as if
- it were a reference */
- refize (sp, nlist_p);
- }
- else if (sp->scoms_chain)
- {
- /* If we have a previous common, keep only the biggest */
- if ((*(sp->scoms_chain))->value > sym->value)
- {
- /* other common is bigger, throw this one away */
- refize (sp, nlist_p);
- }
- else if (sp->scoms_chain != nlist_p)
- {
- /* other common is smaller, throw that away */
- refize (sp, sp->scoms_chain);
- sp->scoms_chain = nlist_p;
- }
- }
- else
- {
- /* This is the first time we've seen a common, so remember it
- - if it was undefined before, we know it's defined now. If
- the symbol has been marked as really being a constructor,
- then treat this as a ref
- */
- if (sp->flags & SYM_CONSTRUCTOR)
- {
- /* Turn this into a ref */
- refize (sp, nlist_p);
- }
- else
- {
- /* treat like a common */
- if (sp->srefs_chain)
- undefined_global_sym_count--;
-
- commons_pending++;
- sp->scoms_chain = nlist_p;
- }
- }
- }
-
- else if (sym->section != &bfd_und_section)
- {
- /* This is the definition of a symbol, add to def chain */
- if (sp->sdefs_chain && (*(sp->sdefs_chain))->section != sym->section)
- {
- /* Multiple definition */
- asymbol *sy = *(sp->sdefs_chain);
- lang_input_statement_type *stat =
- (lang_input_statement_type *) bfd_asymbol_bfd (sy)->usrdata;
- lang_input_statement_type *stat1 =
- (lang_input_statement_type *) bfd_asymbol_bfd (sym)->usrdata;
- asymbol **stat1_symbols = stat1 ? stat1->asymbols : 0;
- asymbol **stat_symbols = stat ? stat->asymbols : 0;
-
- multiple_def_count++;
- einfo ("%X%C: multiple definition of `%T'\n",
- bfd_asymbol_bfd (sym), sym->section, stat1_symbols, sym->value, sym);
-
- einfo ("%X%C: first seen here\n",
- bfd_asymbol_bfd (sy), sy->section, stat_symbols, sy->value);
- }
- else
- {
- sym->udata = (PTR) (sp->sdefs_chain);
- sp->sdefs_chain = nlist_p;
- }
- /* A definition overrides a common symbol */
- if (sp->scoms_chain)
- {
- refize (sp, sp->scoms_chain);
- sp->scoms_chain = 0;
- commons_pending--;
- }
- else if (sp->srefs_chain && relaxing == false)
- {
- /* If previously was undefined, then remember as defined */
- undefined_global_sym_count--;
- }
- }
- else
- {
- if (sp->scoms_chain == (asymbol **) NULL
- && sp->srefs_chain == (asymbol **) NULL
- && sp->sdefs_chain == (asymbol **) NULL)
- {
- /* And it's the first time we've seen it */
- undefined_global_sym_count++;
-
- }
-
- refize (sp, nlist_p);
- }
- }
-
- ASSERT (sp->sdefs_chain == 0 || sp->scoms_chain == 0);
- ASSERT (sp->scoms_chain == 0 || (*(sp->scoms_chain))->udata == 0);
-
-
- }
-
- static void
- Q_enter_file_symbols (entry)
- lang_input_statement_type *entry;
- {
- asymbol **q;
-
- entry->common_section =
- bfd_make_section_old_way (entry->the_bfd, "COMMON");
- entry->common_section->flags = SEC_NEVER_LOAD;
- ldlang_add_file (entry);
-
-
- if (trace_files || option_v)
- {
- info ("%I\n", entry);
- }
-
- total_symbols_seen += entry->symbol_count;
- total_files_seen++;
- if (entry->symbol_count)
- {
- for (q = entry->asymbols; *q; q++)
- {
- asymbol *p = *q;
-
- if (had_y && p->name)
- {
- /* look up the symbol anyway to see if the trace bit was
- set */
- ldsym_type *s = ldsym_get (p->name);
- if (s->flags & SYM_Y)
- {
- einfo ("%B: %s %T\n", entry->the_bfd,
- p->section == &bfd_und_section ? "reference to" : "definition of ",
- p);
- }
- }
-
- if (p->section == &bfd_ind_section)
- {
- add_indirect (q);
- }
- else if (p->flags & BSF_WARNING)
- {
- add_warning (p);
- }
- else if (p->section == &bfd_und_section
- || (p->flags & BSF_GLOBAL)
- || bfd_is_com_section (p->section)
- || (p->flags & BSF_CONSTRUCTOR))
-
- {
-
- asymbol *p = *q;
-
- if (p->flags & BSF_INDIRECT)
- {
- add_indirect (q);
- }
- else if (p->flags & BSF_WARNING)
- {
- add_warning (p);
- }
- else if (p->section == &bfd_und_section
- || (p->flags & BSF_GLOBAL)
- || bfd_is_com_section (p->section)
- || (p->flags & BSF_CONSTRUCTOR))
- {
- Q_enter_global_ref (q, p->name);
- }
-
- }
-
- }
- }
- }
-
-
- /* Searching libraries */
-
- struct lang_input_statement_struct *decode_library_subfile ();
- void linear_library (), symdef_library ();
-
- /* Search the library ENTRY, already open on descriptor DESC.
- This means deciding which library members to load,
- making a chain of `struct lang_input_statement_struct' for those members,
- and entering their global symbols in the hash table. */
-
- void
- search_library (entry)
- struct lang_input_statement_struct *entry;
- {
-
- /* No need to load a library if no undefined symbols */
- if (!undefined_global_sym_count)
- return;
-
- if (bfd_has_map (entry->the_bfd))
- symdef_library (entry);
- else
- linear_library (entry);
-
- }
-
- #ifdef GNU960
- static
- boolean
- gnu960_check_format (abfd, format)
- bfd *abfd;
- bfd_format format;
- {
- boolean retval;
-
- if ((bfd_check_format (abfd, format) == true)
- && (abfd->xvec->flavour == output_flavor))
- {
- return true;
- }
-
-
- return false;
- }
-
- #endif
-
- void
- ldmain_open_file_read_symbol (entry)
- struct lang_input_statement_struct *entry;
- {
- if (entry->asymbols == (asymbol **) NULL
- && entry->real == true
- && entry->filename != (char *) NULL)
- {
- ldfile_open_file (entry);
-
-
- #ifdef GNU960
- if (gnu960_check_format (entry->the_bfd, bfd_object))
- #else
- if (bfd_check_format (entry->the_bfd, bfd_object))
- #endif
- {
- entry->the_bfd->usrdata = (PTR) entry;
-
-
- Q_read_entry_symbols (entry->the_bfd, entry);
-
- /* look through the sections in the file and see if any of them
- are constructors */
- ldlang_check_for_constructors (entry);
-
- Q_enter_file_symbols (entry);
- }
- #ifdef GNU960
- else if (gnu960_check_format (entry->the_bfd, bfd_archive))
- #else
- else if (bfd_check_format (entry->the_bfd, bfd_archive))
- #endif
- {
- entry->the_bfd->usrdata = (PTR) entry;
-
- entry->subfiles = (lang_input_statement_type *) NULL;
- search_library (entry);
- }
- else
- {
- einfo ("%F%B: malformed input file (not rel or archive) \n",
- entry->the_bfd);
- }
- }
-
- }
-
- /* Construct and return a lang_input_statement_struct for a library member.
- The library's lang_input_statement_struct is library_entry,
- and the library is open on DESC.
- SUBFILE_OFFSET is the byte index in the library of this member's header.
- We store the length of the member into *LENGTH_LOC. */
-
- lang_input_statement_type *
- decode_library_subfile (library_entry, subfile_offset)
- struct lang_input_statement_struct *library_entry;
- bfd *subfile_offset;
- {
- register struct lang_input_statement_struct *subentry;
-
-
- /* First, check if we already have a loaded
- lang_input_statement_struct for this library subfile. If so,
- just return it. Otherwise, allocate some space and build a new one. */
-
- if (subfile_offset->usrdata
- && ((struct lang_input_statement_struct *) subfile_offset->usrdata)->
- loaded == true)
- {
- subentry = (struct lang_input_statement_struct *) subfile_offset->usrdata;
- }
- else
- {
- subentry =
- (struct lang_input_statement_struct *)
- ldmalloc ((bfd_size_type) (sizeof (struct lang_input_statement_struct)));
-
- subentry->filename = subfile_offset->filename;
- subentry->local_sym_name = subfile_offset->filename;
- subentry->asymbols = 0;
- subentry->the_bfd = subfile_offset;
- subentry->subfiles = 0;
- subentry->next = 0;
- subentry->superfile = library_entry;
- subentry->is_archive = false;
-
- subentry->just_syms_flag = false;
- subentry->loaded = false;
- subentry->chain = 0;
- }
- return subentry;
- }
-
- boolean subfile_wanted_p ();
- void
- clear_syms (entry, offset)
- struct lang_input_statement_struct *entry;
- file_ptr offset;
- {
- carsym *car;
- unsigned long indx = bfd_get_next_mapent (entry->the_bfd,
- BFD_NO_MORE_SYMBOLS,
- &car);
-
- while (indx != BFD_NO_MORE_SYMBOLS)
- {
- if (car->file_offset == offset)
- {
- car->name = 0;
- }
- indx = bfd_get_next_mapent (entry->the_bfd, indx, &car);
- }
-
- }
-
- /* Search a library that has a map
- */
- void
- symdef_library (entry)
- struct lang_input_statement_struct *entry;
-
- {
- register struct lang_input_statement_struct *prev = 0;
-
- boolean not_finished = true;
-
- while (not_finished == true)
- {
- carsym *exported_library_name;
- bfd *prev_archive_member_bfd = 0;
-
- int idx = bfd_get_next_mapent (entry->the_bfd,
- BFD_NO_MORE_SYMBOLS,
- &exported_library_name);
-
- not_finished = false;
-
- while (idx != BFD_NO_MORE_SYMBOLS && undefined_global_sym_count)
- {
-
- if (exported_library_name->name)
- {
-
- ldsym_type *sp = ldsym_get_soft (exported_library_name->name);
-
- /* If we find a symbol that appears to be needed, think carefully
- about the archive member that the symbol is in. */
- /* So - if it exists, and is referenced somewhere and is
- undefined or */
- if (sp && sp->srefs_chain && !sp->sdefs_chain)
- {
- bfd *archive_member_bfd = bfd_get_elt_at_index (entry->the_bfd, idx);
- struct lang_input_statement_struct *archive_member_lang_input_statement_struct;
-
- #ifdef GNU960
- if (archive_member_bfd && gnu960_check_format (archive_member_bfd, bfd_object))
- #else
- if (archive_member_bfd && bfd_check_format (archive_member_bfd, bfd_object))
- #endif
- {
-
- /* Don't think carefully about any archive member
- more than once in a given pass. */
- if (prev_archive_member_bfd != archive_member_bfd)
- {
-
- prev_archive_member_bfd = archive_member_bfd;
-
- /* Read the symbol table of the archive member. */
-
- if (archive_member_bfd->usrdata != (PTR) NULL)
- {
-
- archive_member_lang_input_statement_struct = (lang_input_statement_type *) archive_member_bfd->usrdata;
- }
- else
- {
-
- archive_member_lang_input_statement_struct =
- decode_library_subfile (entry, archive_member_bfd);
- archive_member_bfd->usrdata = (PTR) archive_member_lang_input_statement_struct;
-
- }
-
- if (archive_member_lang_input_statement_struct == 0)
- {
- einfo ("%F%I contains invalid archive member %s\n",
- entry, sp->name);
- }
-
- if (archive_member_lang_input_statement_struct->loaded == false)
- {
-
- Q_read_entry_symbols (archive_member_bfd, archive_member_lang_input_statement_struct);
- /* Now scan the symbol table and decide whether to load. */
-
-
- if (subfile_wanted_p (archive_member_lang_input_statement_struct) == true)
-
- {
- /* This member is needed; load it.
- Since we are loading something on this pass,
- we must make another pass through the symdef data. */
-
- not_finished = true;
-
- Q_enter_file_symbols (archive_member_lang_input_statement_struct);
-
- if (prev)
- prev->chain = archive_member_lang_input_statement_struct;
- else
- entry->subfiles = archive_member_lang_input_statement_struct;
-
-
- prev = archive_member_lang_input_statement_struct;
-
-
- /* Clear out this member's symbols from the symdef data
- so that following passes won't waste time on them. */
- clear_syms (entry, exported_library_name->file_offset);
- archive_member_lang_input_statement_struct->loaded = true;
- }
- }
- }
- }
- }
- }
- idx = bfd_get_next_mapent (entry->the_bfd, idx, &exported_library_name);
- }
- }
- }
-
- void
- linear_library (entry)
- struct lang_input_statement_struct *entry;
- {
- boolean more_to_do = true;
- register struct lang_input_statement_struct *prev = 0;
-
- if (entry->complained == false)
- {
- if (entry->the_bfd->xvec->flavour != bfd_target_ieee_flavour)
-
- {
- /* IEEE can use table of contents, so this message is bogus */
- einfo ("%P: library %s has bad table of contents, rerun ranlib\n",
- entry->the_bfd->filename);
- }
- entry->complained = true;
-
- }
- while (more_to_do)
- {
-
- bfd *archive = bfd_openr_next_archived_file (entry->the_bfd, 0);
-
- more_to_do = false;
- while (archive)
- {
- /* Don't check this file if it's already been read in
- once */
-
- if (!archive->usrdata ||
- !((lang_input_statement_type *) (archive->usrdata))->loaded)
- {
- #ifdef GNU960
- if (gnu960_check_format (archive, bfd_object))
- #else
- if (bfd_check_format (archive, bfd_object))
- #endif
- {
- register struct lang_input_statement_struct *subentry;
-
- subentry = decode_library_subfile (entry,
- archive);
-
- archive->usrdata = (PTR) subentry;
- if (!subentry)
- return;
- if (subentry->loaded == false)
- {
- Q_read_entry_symbols (archive, subentry);
-
- if (subfile_wanted_p (subentry) == true)
- {
- Q_enter_file_symbols (subentry);
-
- if (prev)
- prev->chain = subentry;
- else
- entry->subfiles = subentry;
- prev = subentry;
-
- more_to_do = true;
- subentry->loaded = true;
- }
- }
- }
- }
- archive = bfd_openr_next_archived_file (entry->the_bfd, archive);
-
- }
-
- }
- }
-
- /* ENTRY is an entry for a file inside an archive
- Its symbols have been read into core, but not entered into the
- linker ymbol table
- Return nonzero if we ought to load this file */
-
- boolean
- subfile_wanted_p (entry)
- struct lang_input_statement_struct *entry;
- {
- asymbol **q;
-
- for (q = entry->asymbols; *q; q++)
- {
- asymbol *p = *q;
-
- /* If the symbol has an interesting definition, we could
- potentially want it. */
-
- if (p->flags & BSF_INDIRECT)
- {
- /** add_indirect(q);*/
- }
-
- if (bfd_is_com_section (p->section)
- || (p->flags & BSF_GLOBAL)
- || (p->flags & BSF_INDIRECT))
- {
- register ldsym_type *sp = ldsym_get_soft (p->name);
-
- /* If this symbol has not been hashed,
- we can't be looking for it. */
- if (sp != (ldsym_type *) NULL
- && sp->sdefs_chain == (asymbol **) NULL)
- {
- if (sp->srefs_chain != (asymbol **) NULL
- || sp->scoms_chain != (asymbol **) NULL)
- {
- /* This is a symbol we are looking for. It is
- either not yet defined or common. If this is a
- common symbol, then if the symbol in the object
- file is common, we need to combine sizes. But if
- we already have a common symbol, and the symbol
- in the object file is not common, we don't want
- the object file: it is providing a definition for
- a symbol that we already have a definition for
- (this is the else condition below). */
- if (bfd_is_com_section (p->section))
- {
-
- /* If the symbol in the table is a constructor, we won't to
- anything fancy with it */
- if ((sp->flags & SYM_CONSTRUCTOR) == 0)
- {
- /* This libary member has something to
- say about this element. We should
- remember if its a new size */
- /* Move something from the ref list to the com list */
- if (sp->scoms_chain)
- {
- /* Already a common symbol, maybe update it */
- if (p->value > (*(sp->scoms_chain))->value)
- {
- (*(sp->scoms_chain))->value = p->value;
- }
- }
- else
- {
- /* Take a value from the ref chain
- Here we are moving a symbol from the owning bfd
- to another bfd. We must set up the
- common_section portion of the bfd thing */
-
-
-
- sp->scoms_chain = sp->srefs_chain;
- sp->srefs_chain =
- (asymbol **) ((*(sp->srefs_chain))->udata);
- (*(sp->scoms_chain))->udata = (PTR) NULL;
-
- (*(sp->scoms_chain))->section = p->section;
- (*(sp->scoms_chain))->flags = 0;
- /* Remember the size of this item */
- sp->scoms_chain[0]->value = p->value;
- commons_pending++;
- undefined_global_sym_count--;
- }
- {
- asymbol *com = *(sp->scoms_chain);
-
- if (((lang_input_statement_type *)
- (bfd_asymbol_bfd (com)->usrdata))->common_section ==
- (asection *) NULL)
- {
- ((lang_input_statement_type *)
- (bfd_asymbol_bfd (com)->usrdata))->common_section =
- bfd_make_section_old_way (bfd_asymbol_bfd (com), "COMMON");
- }
- }
- }
- ASSERT (p->udata == 0);
- }
- else if (sp->scoms_chain == (asymbol **) NULL)
- {
- if (write_map)
- {
- info ("%I needed due to %s\n", entry, sp->name);
- }
- return true;
- }
- }
- }
- }
- }
-
- return false;
- }
-
- void
- add_ysym (text)
- char *text;
- {
- ldsym_type *lookup = ldsym_get (text);
- lookup->flags |= SYM_Y;
- had_y = 1;
- }
-