X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fldmain.c;h=cfdbdd7a808f177eb1aa5bb628e5fb37f0c0f07b;hb=a712da2085bdea09bc56b3a59eb31cf2ab024e00;hp=168a7364fa4b7c87c50f9f7f21116b6ffdcc454c;hpb=1418c83b393c2a5d08cc56b306272aab660fbd9d;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/ldmain.c b/ld/ldmain.c index 168a7364fa..cfdbdd7a80 100644 --- a/ld/ldmain.c +++ b/ld/ldmain.c @@ -1,10 +1,13 @@ -/* Copyright (C) 1991 Free Software Foundation, Inc. - +/* Main program of GNU linker. + Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999 + 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 1, or (at your option) +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, @@ -13,767 +16,1299 @@ 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. */ - -/* - * Written by Steve Chamberlain steve@cygnus.com - * - * $Id$ - * - * - */ - +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 "sysdep.h" #include "bfd.h" +#include "sysdep.h" +#include +#include +#include "libiberty.h" +#include "progress.h" +#include "bfdlink.h" -#include "config.h" #include "ld.h" #include "ldmain.h" #include "ldmisc.h" #include "ldwrite.h" #include "ldgram.h" -#include "ldsym.h" +#include "ldexp.h" #include "ldlang.h" -#include "ld-emul.h" +#include "ldemul.h" #include "ldlex.h" #include "ldfile.h" +#include "ldctor.h" + +/* Somewhere above, sys/stat.h got included . . . . */ +#if !defined(S_ISDIR) && defined(S_IFDIR) +#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) +#endif + +#include + +#ifdef HAVE_SBRK +#ifdef NEED_DECLARATION_SBRK +extern PTR sbrk (); +#endif +#endif + +static char *get_emulation PARAMS ((int, char **)); +static void set_scripts_dir PARAMS ((void)); -/* IMPORTS */ -extern boolean lang_has_input_file; -extern boolean trace_files; /* EXPORTS */ char *default_target; -char *output_filename = "a.out"; +const char *output_filename = "a.out"; + /* Name this program was invoked by. */ char *program_name; /* The file that we're creating */ -bfd *output_bfd; - -extern boolean option_v; - -/* The local symbol prefix */ -char lprefix = 'L'; +bfd *output_bfd = 0; -/* Count the number of global symbols multiply defined. */ -int multiple_def_count; +/* Set by -G argument, for MIPS ECOFF target. */ +int g_switch_value = 8; +/* Nonzero means print names of input files as processed. */ +boolean trace_files; -/* Count the number of symbols defined through common declarations. - This count is referenced in symdef_library, linear_library, and - modified by enter_global_ref. +/* Nonzero means same, but note open failures, too. */ +boolean trace_file_tries; - It is incremented when a symbol is created as a common, and - decremented when the common declaration is overridden +/* Nonzero means version number was printed, so exit successfully + instead of complaining if no input files are given. */ +boolean version_printed; - Another way of thinking of it is that this is a count of - all ldsym_types with a ->scoms field -*/ -unsigned int commons_pending; +/* Nonzero means link in every member of an archive. */ +boolean whole_archive; +/* True if we should demangle symbol names. */ +boolean demangling; -/* Count the number of global symbols referenced and not defined. - common symbols are not included in this count. - */ +args_type command_line; -unsigned int undefined_global_sym_count; +ld_config_type config; +static void remove_output PARAMS ((void)); +static boolean check_for_scripts_dir PARAMS ((char *dir)); +static boolean add_archive_element PARAMS ((struct bfd_link_info *, bfd *, + const char *)); +static boolean multiple_definition PARAMS ((struct bfd_link_info *, + const char *, + bfd *, asection *, bfd_vma, + bfd *, asection *, bfd_vma)); +static boolean multiple_common PARAMS ((struct bfd_link_info *, + const char *, bfd *, + enum bfd_link_hash_type, bfd_vma, + bfd *, enum bfd_link_hash_type, + bfd_vma)); +static boolean add_to_set PARAMS ((struct bfd_link_info *, + struct bfd_link_hash_entry *, + bfd_reloc_code_real_type, + bfd *, asection *, bfd_vma)); +static boolean constructor_callback PARAMS ((struct bfd_link_info *, + boolean constructor, + const char *name, + bfd *, asection *, bfd_vma)); +static boolean warning_callback PARAMS ((struct bfd_link_info *, + const char *, const char *, bfd *, + asection *, bfd_vma)); +static void warning_find_reloc PARAMS ((bfd *, asection *, PTR)); +static boolean undefined_symbol PARAMS ((struct bfd_link_info *, + const char *, bfd *, + asection *, bfd_vma, boolean)); +static boolean reloc_overflow PARAMS ((struct bfd_link_info *, const char *, + const char *, bfd_vma, + bfd *, asection *, bfd_vma)); +static boolean reloc_dangerous PARAMS ((struct bfd_link_info *, const char *, + bfd *, asection *, bfd_vma)); +static boolean unattached_reloc PARAMS ((struct bfd_link_info *, + const char *, bfd *, asection *, + bfd_vma)); +static boolean notice PARAMS ((struct bfd_link_info *, const char *, + bfd *, asection *, bfd_vma)); + +static struct bfd_link_callbacks link_callbacks = +{ + add_archive_element, + multiple_definition, + multiple_common, + add_to_set, + constructor_callback, + warning_callback, + undefined_symbol, + reloc_overflow, + reloc_dangerous, + unattached_reloc, + notice +}; + +struct bfd_link_info link_info; + +static void +remove_output () +{ + if (output_filename) + { + if (output_bfd && output_bfd->iostream) + fclose((FILE *)(output_bfd->iostream)); + if (delete_output_file_on_failure) + unlink (output_filename); + } +} +int +main (argc, argv) + int argc; + char **argv; +{ + char *emulation; + long start_time = get_run_time (); -/* Count the number of warning symbols encountered. */ -int warning_count; +#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) + setlocale (LC_MESSAGES, ""); +#endif + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); -/* have we had a load script ? */ -extern boolean had_script; + program_name = argv[0]; + xmalloc_set_program_name (program_name); + START_PROGRESS (program_name, 0); + bfd_init (); -/* Nonzero means print names of input files as processed. */ -boolean trace_files; + bfd_set_error_program_name (program_name); + xatexit (remove_output); + /* Set the default BFD target based on the configured target. Doing + this permits the linker to be configured for a particular target, + and linked against a shared BFD library which was configured for + a different target. The macro TARGET is defined by Makefile. */ + if (! bfd_set_default_target (TARGET)) + { + einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); + xexit (1); + } -/* 1 => write load map. */ -boolean write_map; + /* Initialize the data about options. */ + trace_files = trace_file_tries = version_printed = false; + whole_archive = false; + config.build_constructors = true; + config.dynamic_link = false; + config.has_shared = false; + command_line.force_common_definition = false; + command_line.interpreter = NULL; + command_line.rpath = NULL; + command_line.warn_mismatch = true; + command_line.check_section_addresses = true; + + /* We initialize DEMANGLING based on the environment variable + COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the + output of the linker, unless COLLECT_NO_DEMANGLE is set in the + environment. Acting the same way here lets us provide the same + interface by default. */ + demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; + + link_info.callbacks = &link_callbacks; + link_info.relocateable = false; + link_info.emitrelocations = false; + link_info.shared = false; + link_info.symbolic = false; + link_info.static_link = false; + link_info.traditional_format = false; + link_info.optimize = false; + link_info.no_undefined = false; + link_info.strip = strip_none; + link_info.discard = discard_none; + link_info.keep_memory = true; + link_info.input_bfds = NULL; + link_info.create_object_symbols_section = NULL; + link_info.hash = NULL; + link_info.keep_hash = NULL; + link_info.notice_all = false; + link_info.notice_hash = NULL; + link_info.wrap_hash = NULL; + link_info.mpc860c0 = 0; + /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init + and _fini symbols. We are compatible. */ + link_info.init_function = "_init"; + link_info.fini_function = "_fini"; + + ldfile_add_arch (""); + config.make_executable = true; + force_make_executable = false; + config.magic_demand_paged = true; + config.text_read_only = true; + config.make_executable = true; -int unix_relocate; + emulation = get_emulation (argc, argv); + ldemul_choose_mode (emulation); + default_target = ldemul_choose_target (); + lang_init (); + ldemul_before_parse (); + lang_has_input_file = false; + parse_args (argc, argv); + ldemul_set_symbols (); + if (link_info.relocateable) + { + if (command_line.gc_sections) + einfo ("%P%F: --gc-sections and -r may not be used together\n"); + if (link_info.mpc860c0) + einfo (_("%P%F: -r and --mpc860c0 may not be used together\n")); + else if (command_line.relax) + einfo (_("%P%F: --relax and -r may not be used together\n")); + if (link_info.shared) + einfo (_("%P%F: -r and -shared may not be used together\n")); + } + /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I + don't see how else this can be handled, since in this case we + must preserve all externally visible symbols. */ + if (link_info.relocateable && link_info.strip == strip_all) + { + link_info.strip = strip_debugger; + if (link_info.discard == discard_none) + link_info.discard = discard_all; + } + /* This essentially adds another -L directory so this must be done after + the -L's in argv have been processed. */ + set_scripts_dir (); + if (had_script == false) + { + /* Read the emulation's appropriate default script. */ + int isfile; + char *s = ldemul_get_script (&isfile); + if (isfile) + ldfile_open_command_file (s); + else + { + if (trace_file_tries) + { + info_msg (_("using internal linker script:\n")); + info_msg ("==================================================\n"); + info_msg (s); + info_msg ("\n==================================================\n"); + } + lex_string = s; + lex_redirect (s); + } + parser_input = input_script; + yyparse (); + lex_string = NULL; + } + lang_final (); -/* Force the make_executable to be output, even if there are non-fatal - errors */ -boolean force_make_executable; + if (lang_has_input_file == false) + { + if (version_printed) + xexit (0); + einfo (_("%P%F: no input files\n")); + } + if (trace_files) + { + info_msg (_("%P: mode %s\n"), emulation); + } -/* A count of the total number of local symbols ever seen - by adding - the symbol_count field of each newly read afile.*/ + ldemul_after_parse (); -unsigned int total_symbols_seen; + 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) + { + bfd_set_error (bfd_error_system_call); + einfo (_("%P%F: cannot open map file %s: %E\n"), + config.map_filename); + } + } + } -/* A count of the number of read files - the same as the number of elements - in file_chain - */ -unsigned int total_files_seen; + lang_process (); -/* IMPORTS */ -args_type command_line; -ld_config_type config; -int -main (argc, argv) - char **argv; - int argc; -{ - char *emulation; - program_name = argv[0]; - output_filename = "a.out"; - emulation = getenv(EMULATION_ENVIRON); - - /* Initialize the data about options. */ - strip_symbols = STRIP_NONE; - trace_files = false; - discard_locals = DISCARD_NONE; + /* Print error messages for any missing symbols, for any warning + symbols, and possibly multiple definitions */ - write_map = false; - config.relocateable_output = false; - unix_relocate = 0; - command_line.force_common_definition = false; - ldfile_add_arch(""); - ldfile_add_library_path("./"); - config.make_executable = true; - force_make_executable = false; + 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; + } + } - /* Initialize the cumulative counts of symbols. */ - undefined_global_sym_count = 0; - warning_count = 0; - multiple_def_count = 0; - commons_pending = 0; + if (link_info.relocateable) + output_bfd->flags &= ~EXEC_P; + else + output_bfd->flags |= EXEC_P; - config.magic_demand_paged = true ; - config.make_executable = true; + ldwrite (); - if (emulation == (char *)NULL) { - emulation= DEFAULT_EMULATION; - } + if (config.map_file != NULL) + lang_map (); + if (command_line.cref) + output_cref (config.map_file != NULL ? config.map_file : stdout); + if (nocrossref_list != NULL) + check_nocrossrefs (); + /* 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?) */ - ldemul_choose_mode(emulation); + if (config.make_executable == false && force_make_executable == false) + { + if (trace_files == true) + { + einfo (_("%P: link errors found, deleting executable `%s'\n"), + output_filename); + } - default_target = ldemul_choose_target(); + /* The file will be removed by remove_output. */ - lang_init(); - ldemul_before_parse(); - lang_has_input_file = false; - parse_args(argc, argv); - lang_final(); - if (trace_files) { - info("%P: mode %s\n", emulation); - } - if (lang_has_input_file == false) { - info("%P%F: No input files\n"); - } + xexit (1); + } + else + { + if (! bfd_close (output_bfd)) + einfo (_("%F%B: final close failed: %E\n"), output_bfd); - ldemul_after_parse(); + /* If the --force-exe-suffix is enabled, and we're making an + executable file and it doesn't end in .exe, copy it to one which does. */ - lang_process(); + if (! link_info.relocateable && command_line.force_exe_suffix) + { + int len = strlen (output_filename); + if (len < 4 + || (strcasecmp (output_filename + len - 4, ".exe") != 0 + && strcasecmp (output_filename + len - 4, ".dll") != 0)) + { + FILE *src; + FILE *dst; + const int bsize = 4096; + char *buf = xmalloc (bsize); + int l; + char *dst_name = xmalloc (len + 5); + strcpy (dst_name, output_filename); + strcat (dst_name, ".exe"); + src = fopen (output_filename, FOPEN_RB); + dst = fopen (dst_name, FOPEN_WB); + + if (!src) + einfo (_("%X%P: unable to open for source of copy `%s'\n"), output_filename); + if (!dst) + einfo (_("%X%P: unable to open for destination of copy `%s'\n"), dst_name); + while ((l = fread (buf, 1, bsize, src)) > 0) + { + int done = fwrite (buf, 1, l, dst); + if (done != l) + { + einfo (_("%P: Error writing file `%s'\n"), dst_name); + } + } + fclose (src); + if (fclose (dst) == EOF) + { + einfo (_("%P: Error closing file `%s'\n"), dst_name); + } + free (dst_name); + free (buf); + } + } + } + END_PROGRESS (program_name); + if (config.stats) + { +#ifdef HAVE_SBRK + char *lim = (char *) sbrk (0); +#endif + long run_time = get_run_time () - start_time; + + fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), + program_name, run_time / 1000000, run_time % 1000000); +#ifdef HAVE_SBRK + fprintf (stderr, _("%s: data size %ld\n"), program_name, + (long) (lim - (char *) &environ)); +#endif + } + /* Prevent remove_output from doing anything, after a successful link. */ + output_filename = NULL; - /* Print error messages for any missing symbols, for any warning - symbols, and possibly multiple definitions */ - - /* Print a map, if requested. */ + xexit (0); + return 0; +} - if (write_map) { - ldsym_print_symbol_table (); - lang_map(stdout); - } +/* We need to find any explicitly given emulation in order to initialize the + state that's needed by the lex&yacc argument parser (parse_args). */ +static char * +get_emulation (argc, argv) + int argc; + char **argv; +{ + char *emulation; + int i; - if (config.relocateable_output) { - output_bfd->flags &= ~( D_PAGED); - output_bfd->flags |= EXEC_P; - ldwrite(); - bfd_close(output_bfd); - } - else { - output_bfd->flags |= EXEC_P; + emulation = getenv (EMULATION_ENVIRON); + if (emulation == NULL) + emulation = DEFAULT_EMULATION; - ldwrite(); - bfd_close(output_bfd); - if (config.make_executable == false && force_make_executable == false) { - unlink(output_filename); + for (i = 1; i < argc; i++) + { + if (!strncmp (argv[i], "-m", 2)) + { + if (argv[i][2] == '\0') + { + /* -m EMUL */ + if (i < argc - 1) + { + emulation = argv[i + 1]; + i++; + } + else + { + einfo(_("%P%F: missing argument to -m\n")); + } + } + else if (strcmp (argv[i], "-mips1") == 0 + || strcmp (argv[i], "-mips2") == 0 + || strcmp (argv[i], "-mips3") == 0 + || strcmp (argv[i], "-mips4") == 0) + { + /* FIXME: The arguments -mips1, -mips2 and -mips3 are + passed to the linker by some MIPS compilers. They + generally tell the linker to use a slightly different + library path. Perhaps someday these should be + implemented as emulations; until then, we just ignore + the arguments and hope that nobody ever creates + emulations named ips1, ips2 or ips3. */ + } + else if (strcmp (argv[i], "-m486") == 0) + { + /* FIXME: The argument -m486 is passed to the linker on + some Linux systems. Hope that nobody creates an + emulation named 486. */ + } + else + { + /* -mEMUL */ + emulation = &argv[i][2]; + } + } } - return (!config.make_executable); - } - return(0); -} /* main() */ + return emulation; +} +/* If directory DIR contains an "ldscripts" subdirectory, + add DIR to the library search path and return true, + else return false. */ -void -Q_read_entry_symbols (desc, entry) - bfd *desc; - struct lang_input_statement_struct *entry; +static boolean +check_for_scripts_dir (dir) + char *dir; { - if (entry->asymbols == (asymbol **)NULL) { - size_t table_size = get_symtab_upper_bound(desc); - entry->asymbols = (asymbol **)ldmalloc(table_size); - - entry->symbol_count = bfd_canonicalize_symtab(desc, entry->asymbols) ; - } + size_t dirlen; + char *buf; + struct stat s; + boolean res; + + dirlen = strlen (dir); + /* sizeof counts the terminating NUL. */ + buf = (char *) xmalloc (dirlen + sizeof("/ldscripts")); + sprintf (buf, "%s/ldscripts", dir); + + res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); + free (buf); + if (res) + ldfile_add_library_path (dir, false); + return res; } +/* Set the default directory for finding script files. + Libraries will be searched for here too, but that's ok. + We look for the "ldscripts" directory in: + + SCRIPTDIR (passed from Makefile) + the dir where this program is (for using it from the build tree) + the dir where this program is/../lib (for installing the tool suite elsewhere) */ -/* - * turn this item into a reference - */ static void -refize(sp, nlist_p) -ldsym_type *sp; -asymbol **nlist_p; +set_scripts_dir () { - asymbol *sym = *nlist_p; - sym->value = 0; - sym->flags = BSF_UNDEFINED; - sym->section = (asection *)NULL; - sym->udata =(void *)( 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. -*/ - + char *end, *dir; + size_t dirlen; -void -Q_enter_global_ref (nlist_p) - asymbol **nlist_p; + if (check_for_scripts_dir (SCRIPTDIR)) + return; /* We've been installed normally. */ -{ - asymbol *sym = *nlist_p; - char *name = sym->name; - ldsym_type *sp = ldsym_get (name); - - flagword this_symbol_flags = sym->flags; - - - ASSERT(sym->udata == 0); - - /* Just place onto correct chain */ - if (flag_is_common(this_symbol_flags)) { - /* 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 (sp->srefs_chain) - undefined_global_sym_count--; - - commons_pending++; - sp->scoms_chain = nlist_p; - } - } - - else if (flag_is_defined(this_symbol_flags)) { - /* 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 *) sy->the_bfd->usrdata; - lang_input_statement_type *stat1 = (lang_input_statement_type *) sym->the_bfd->usrdata; - asymbol ** stat1_symbols = stat1 ? stat1->asymbols: 0; - asymbol ** stat_symbols = stat ? stat->asymbols:0; - - multiple_def_count++; - info("%C: multiple definition of `%T'\n", - sym->the_bfd, - sym->section, - stat1_symbols, - sym->value, - sym); - - info("%C: first seen here\n", - sy->the_bfd, - sy->section, - stat_symbols, - sy->value); - } - else { - sym->udata =(void *)( 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) { - /* 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++; + /* Look for "ldscripts" in the dir where our binary is. */ + end = strrchr (program_name, '/'); + if (end == NULL) + { + /* Don't look for ldscripts in the current directory. There is + too much potential for confusion. */ + return; } - refize(sp, nlist_p); - } + dirlen = end - program_name; + /* Make a copy of program_name in dir. + Leave room for later "/../lib". */ + dir = (char *) xmalloc (dirlen + 8); + strncpy (dir, program_name, dirlen); + dir[dirlen] = '\0'; - ASSERT(sp->sdefs_chain == 0 || sp->scoms_chain == 0); - ASSERT(sp->scoms_chain ==0 || (*(sp->scoms_chain))->udata == 0); + if (check_for_scripts_dir (dir)) + return; /* Don't free dir. */ + /* Look for "ldscripts" in /../lib. */ + strcpy (dir + dirlen, "/../lib"); + if (check_for_scripts_dir (dir)) + return; + free (dir); /* Well, we tried. */ } -static void -Q_enter_file_symbols (entry) -lang_input_statement_type *entry; +void +add_ysym (name) + const char *name; { - asymbol **q ; - entry->common_section = - bfd_make_section(entry->the_bfd, "COMMON"); - - ldlang_add_file(entry); - + if (link_info.notice_hash == (struct bfd_hash_table *) NULL) + { + link_info.notice_hash = ((struct bfd_hash_table *) + xmalloc (sizeof (struct bfd_hash_table))); + if (! bfd_hash_table_init_n (link_info.notice_hash, + bfd_hash_newfunc, + 61)) + einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); + } + + if (bfd_hash_lookup (link_info.notice_hash, name, true, true) + == (struct bfd_hash_entry *) NULL) + einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); +} - if (trace_files || option_v) { - info("%I\n", entry); - } +/* Record a symbol to be wrapped, from the --wrap option. */ - total_symbols_seen += entry->symbol_count; - total_files_seen ++; - for (q = entry->asymbols; *q; q++) +void +add_wrap (name) + const char *name; +{ + if (link_info.wrap_hash == NULL) { - asymbol *p = *q; - - if (flag_is_undefined_or_global_or_common(p->flags)) - { - Q_enter_global_ref(q); - } - ASSERT(p->flags != 0); + link_info.wrap_hash = ((struct bfd_hash_table *) + xmalloc (sizeof (struct bfd_hash_table))); + if (! bfd_hash_table_init_n (link_info.wrap_hash, + bfd_hash_newfunc, + 61)) + einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); } + if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) + einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); } +/* Handle the -retain-symbols-file option. */ +void +add_keepsyms_file (filename) + const char *filename; +{ + FILE *file; + char *buf; + size_t bufsize; + int c; -/* Searching libraries */ + if (link_info.strip == strip_some) + einfo (_("%X%P: error: duplicate retain-symbols-file\n")); -struct lang_input_statement_struct *decode_library_subfile (); -void linear_library (), symdef_library (); + file = fopen (filename, "r"); + if (file == (FILE *) NULL) + { + bfd_set_error (bfd_error_system_call); + einfo ("%X%P: %s: %E\n", filename); + return; + } -/* 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. */ + link_info.keep_hash = ((struct bfd_hash_table *) + xmalloc (sizeof (struct bfd_hash_table))); + if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) + einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); -void -search_library (entry) - struct lang_input_statement_struct *entry; -{ + bufsize = 100; + buf = (char *) xmalloc (bufsize); - /* No need to load a library if no undefined symbols */ - if (!undefined_global_sym_count) return; + c = getc (file); + while (c != EOF) + { + while (isspace (c)) + c = getc (file); - if (bfd_has_map(entry->the_bfd)) - symdef_library (entry); - else - linear_library (entry); + if (c != EOF) + { + size_t len = 0; -} + while (! isspace (c) && c != EOF) + { + buf[len] = c; + ++len; + if (len >= bufsize) + { + bufsize *= 2; + buf = xrealloc (buf, bufsize); + } + c = getc (file); + } + buf[len] = '\0'; -void -ldmain_open_file_read_symbol (entry) -struct lang_input_statement_struct *entry; + if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) + == (struct bfd_hash_entry *) NULL) + einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); + } + } + + if (link_info.strip != strip_none) + einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); + + link_info.strip = strip_some; +} + +/* Callbacks from the BFD linker routines. */ + +/* This is called when BFD has decided to include an archive member in + a link. */ + +/*ARGSUSED*/ +static boolean +add_archive_element (info, abfd, name) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + bfd *abfd; + const char *name; { - if (entry->asymbols == (asymbol **)NULL - &&entry->real == true - && entry->filename != (char *)NULL) + lang_input_statement_type *input; + + input = ((lang_input_statement_type *) + xmalloc (sizeof (lang_input_statement_type))); + input->filename = abfd->filename; + input->local_sym_name = abfd->filename; + input->the_bfd = abfd; + input->asymbols = NULL; + input->next = NULL; + input->just_syms_flag = false; + input->loaded = false; + input->search_dirs_flag = false; + + /* FIXME: The following fields are not set: header.next, + header.type, closed, passive_position, symbol_count, + next_real_file, is_archive, target, real. This bit of code is + from the old decode_library_subfile function. I don't know + whether any of those fields matters. */ + + ldlang_add_file (input); + + if (config.map_file != (FILE *) NULL) { - ldfile_open_file (entry); + static boolean header_printed; + struct bfd_link_hash_entry *h; + bfd *from; + int len; - if (bfd_check_format(entry->the_bfd, bfd_object)) + h = bfd_link_hash_lookup (link_info.hash, name, false, false, true); + + if (h == NULL) + from = NULL; + else { - entry->the_bfd->usrdata = (void*)entry; + switch (h->type) + { + default: + from = NULL; + break; + + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + from = h->u.def.section->owner; + break; + + case bfd_link_hash_undefined: + case bfd_link_hash_undefweak: + from = h->u.undef.abfd; + break; + + case bfd_link_hash_common: + from = h->u.c.p->section->owner; + break; + } + } + if (! header_printed) + { + char buf[100]; - Q_read_entry_symbols (entry->the_bfd, entry); - Q_enter_file_symbols (entry); + sprintf (buf, "%-29s %s\n\n", _("Archive member included"), + _("because of file (symbol)")); + minfo ("%s", buf); + header_printed = true; } - else if (bfd_check_format(entry->the_bfd, bfd_archive)) + + if (bfd_my_archive (abfd) == NULL) + { + minfo ("%s", bfd_get_filename (abfd)); + len = strlen (bfd_get_filename (abfd)); + } + else { - entry->the_bfd->usrdata = (void *)entry; + minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), + bfd_get_filename (abfd)); + len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) + + strlen (bfd_get_filename (abfd)) + + 2); + } - entry->subfiles = (lang_input_statement_type *)NULL; - search_library (entry); + if (len >= 29) + { + print_nl (); + len = 0; } - else + while (len < 30) { - info("%F%I: malformed input file (not rel or archive) \n", entry); + print_space (); + ++len; } - } -} + if (from != NULL) + minfo ("%B ", from); + if (h != NULL) + minfo ("(%T)\n", h->root.string); + else + minfo ("(%s)\n", name); + } + if (trace_files || trace_file_tries) + info_msg ("%I\n", input); -/* 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. */ + return true; +} -lang_input_statement_type * -decode_library_subfile (library_entry, subfile_offset) - struct lang_input_statement_struct *library_entry; - bfd *subfile_offset; +/* This is called when BFD has discovered a symbol which is defined + multiple times. */ + +/*ARGSUSED*/ +static boolean +multiple_definition (info, name, obfd, osec, oval, nbfd, nsec, nval) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const char *name; + bfd *obfd; + asection *osec; + bfd_vma oval; + bfd *nbfd; + asection *nsec; + bfd_vma nval; { - register struct lang_input_statement_struct *subentry; - subentry = (struct lang_input_statement_struct *) ldmalloc (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; + /* If either section has the output_section field set to + bfd_abs_section_ptr, it means that the section is being + discarded, and this is not really a multiple definition at all. + FIXME: It would be cleaner to somehow ignore symbols defined in + sections which are being discarded. */ + if ((osec->output_section != NULL + && ! bfd_is_abs_section (osec) + && bfd_is_abs_section (osec->output_section)) + || (nsec->output_section != NULL + && ! bfd_is_abs_section (nsec) + && bfd_is_abs_section (nsec->output_section))) + return true; + + einfo (_("%X%C: multiple definition of `%T'\n"), + nbfd, nsec, nval, name); + if (obfd != (bfd *) NULL) + einfo (_("%D: first defined here\n"), obfd, osec, oval); + return true; } -boolean subfile_wanted_p (); -void -clear_syms(entry, offset) -struct lang_input_statement_struct *entry; -file_ptr offset; +/* This is called when there is a definition of a common symbol, or + when a common symbol is found for a symbol that is already defined, + or when two common symbols are found. We only do something if + -warn-common was used. */ + +/*ARGSUSED*/ +static boolean +multiple_common (info, name, obfd, otype, osize, nbfd, ntype, nsize) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const char *name; + bfd *obfd; + enum bfd_link_hash_type otype; + bfd_vma osize; + bfd *nbfd; + enum bfd_link_hash_type ntype; + bfd_vma nsize; { - 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; + if (! config.warn_common) + return true; + + if (ntype == bfd_link_hash_defined + || ntype == bfd_link_hash_defweak + || ntype == bfd_link_hash_indirect) + { + ASSERT (otype == bfd_link_hash_common); + einfo (_("%B: warning: definition of `%T' overriding common\n"), + nbfd, name); + if (obfd != NULL) + einfo (_("%B: warning: common is here\n"), obfd); + } + else if (otype == bfd_link_hash_defined + || otype == bfd_link_hash_defweak + || otype == bfd_link_hash_indirect) + { + ASSERT (ntype == bfd_link_hash_common); + einfo (_("%B: warning: common of `%T' overridden by definition\n"), + nbfd, name); + if (obfd != NULL) + einfo (_("%B: warning: defined here\n"), obfd); + } + else + { + ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); + if (osize > nsize) + { + einfo (_("%B: warning: common of `%T' overridden by larger common\n"), + nbfd, name); + if (obfd != NULL) + einfo (_("%B: warning: larger common is here\n"), obfd); + } + else if (nsize > osize) + { + einfo (_("%B: warning: common of `%T' overriding smaller common\n"), + nbfd, name); + if (obfd != NULL) + einfo (_("%B: warning: smaller common is here\n"), obfd); + } + else + { + einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); + if (obfd != NULL) + einfo (_("%B: warning: previous common is here\n"), obfd); + } } - indx = bfd_get_next_mapent(entry->the_bfd, indx, &car); - } + return true; } -/* Search a library that has a map - */ -void -symdef_library (entry) - struct lang_input_statement_struct *entry; - +/* This is called when BFD has discovered a set element. H is the + entry in the linker hash table for the set. SECTION and VALUE + represent a value which should be added to the set. */ + +/*ARGSUSED*/ +static boolean +add_to_set (info, h, reloc, abfd, section, value) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + struct bfd_link_hash_entry *h; + bfd_reloc_code_real_type reloc; + bfd *abfd; + asection *section; + bfd_vma value; { - register struct lang_input_statement_struct *prev = 0; + if (config.warn_constructors) + einfo (_("%P: warning: global constructor %s used\n"), + h->root.string); - boolean not_finished = true; + if (! config.build_constructors) + return true; + ldctor_add_set_entry (h, reloc, (const char *) NULL, section, value); - while (not_finished == true) + if (h->type == bfd_link_hash_new) { - 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; + h->type = bfd_link_hash_undefined; + h->u.undef.abfd = abfd; + /* We don't call bfd_link_add_undef to add this to the list of + undefined symbols because we are going to define it + ourselves. */ + } - while (idx != BFD_NO_MORE_SYMBOLS && undefined_global_sym_count) - { + return true; +} - if (exported_library_name->name) - { +/* This is called when BFD has discovered a constructor. This is only + called for some object file formats--those which do not handle + constructors in some more clever fashion. This is similar to + adding an element to a set, but less general. */ + +static boolean +constructor_callback (info, constructor, name, abfd, section, value) + struct bfd_link_info *info; + boolean constructor; + const char *name; + bfd *abfd; + asection *section; + bfd_vma value; +{ + char *s; + struct bfd_link_hash_entry *h; + char set_name[1 + sizeof "__CTOR_LIST__"]; + + if (config.warn_constructors) + einfo (_("%P: warning: global constructor %s used\n"), name); + + if (! config.build_constructors) + return true; + + /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a + useful error message. */ + if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL + && (link_info.relocateable + || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) + einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); + + s = set_name; + if (bfd_get_symbol_leading_char (abfd) != '\0') + *s++ = bfd_get_symbol_leading_char (abfd); + if (constructor) + strcpy (s, "__CTOR_LIST__"); + else + strcpy (s, "__DTOR_LIST__"); - ldsym_type *sp = ldsym_get_soft (exported_library_name->name); + h = bfd_link_hash_lookup (info->hash, set_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; + h->u.undef.abfd = abfd; + /* We don't call bfd_link_add_undef to add this to the list of + undefined symbols because we are going to define it + ourselves. */ + } - /* 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; + ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); + return true; +} - if (archive_member_bfd && bfd_check_format(archive_member_bfd, bfd_object)) - { +/* A structure used by warning_callback to pass information through + bfd_map_over_sections. */ - /* Don't think carefully about any archive member - more than once in a given pass. */ - if (prev_archive_member_bfd != archive_member_bfd) - { +struct warning_callback_info +{ + boolean found; + const char *warning; + const char *symbol; + asymbol **asymbols; +}; + +/* This is called when there is a reference to a warning symbol. */ + +/*ARGSUSED*/ +static boolean +warning_callback (info, warning, symbol, abfd, section, address) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const char *warning; + const char *symbol; + bfd *abfd; + asection *section; + bfd_vma address; +{ + /* This is a hack to support warn_multiple_gp. FIXME: This should + have a cleaner interface, but what? */ + if (! config.warn_multiple_gp + && strcmp (warning, "using multiple gp values") == 0) + return true; + + if (section != NULL) + einfo ("%C: %s\n", abfd, section, address, warning); + else if (abfd == NULL) + einfo ("%P: %s\n", warning); + else if (symbol == NULL) + einfo ("%B: %s\n", abfd, warning); + else + { + lang_input_statement_type *entry; + asymbol **asymbols; + struct warning_callback_info info; - prev_archive_member_bfd = archive_member_bfd; + /* Look through the relocs to see if we can find a plausible + address. */ - /* Read the symbol table of the archive member. */ + entry = (lang_input_statement_type *) abfd->usrdata; + if (entry != NULL && entry->asymbols != NULL) + asymbols = entry->asymbols; + else + { + long symsize; + long symbol_count; + + symsize = bfd_get_symtab_upper_bound (abfd); + if (symsize < 0) + einfo (_("%B%F: could not read symbols: %E\n"), abfd); + asymbols = (asymbol **) xmalloc (symsize); + symbol_count = bfd_canonicalize_symtab (abfd, asymbols); + if (symbol_count < 0) + einfo (_("%B%F: could not read symbols: %E\n"), abfd); + if (entry != NULL) + { + entry->asymbols = asymbols; + entry->symbol_count = symbol_count; + } + } - if (archive_member_bfd->usrdata != (void *)NULL) { + info.found = false; + info.warning = warning; + info.symbol = symbol; + info.asymbols = asymbols; + bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info); - archive_member_lang_input_statement_struct =(lang_input_statement_type *) archive_member_bfd->usrdata; - } - else { + if (! info.found) + einfo ("%B: %s\n", abfd, warning); - archive_member_lang_input_statement_struct = - decode_library_subfile (entry, archive_member_bfd); - archive_member_bfd->usrdata = (void *) archive_member_lang_input_statement_struct; + if (entry == NULL) + free (asymbols); + } - } + return true; +} - if (archive_member_lang_input_statement_struct == 0) { - info ("%F%I contains invalid archive member %s\n", - entry, - sp->name); - } +/* This is called by warning_callback for each section. It checks the + relocs of the section to see if it can find a reference to the + symbol which triggered the warning. If it can, it uses the reloc + to give an error message with a file and line number. */ - if (archive_member_lang_input_statement_struct->loaded == false) - { +static void +warning_find_reloc (abfd, sec, iarg) + bfd *abfd; + asection *sec; + PTR iarg; +{ + struct warning_callback_info *info = (struct warning_callback_info *) iarg; + long relsize; + arelent **relpp; + long relcount; + arelent **p, **pend; + + if (info->found) + return; + + relsize = bfd_get_reloc_upper_bound (abfd, sec); + if (relsize < 0) + einfo (_("%B%F: could not read relocs: %E\n"), abfd); + if (relsize == 0) + return; + + relpp = (arelent **) xmalloc (relsize); + relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); + if (relcount < 0) + einfo (_("%B%F: could not read relocs: %E\n"), abfd); + + p = relpp; + pend = p + relcount; + for (; p < pend && *p != NULL; p++) + { + arelent *q = *p; - Q_read_entry_symbols (archive_member_bfd, archive_member_lang_input_statement_struct); - /* Now scan the symbol table and decide whether to load. */ + if (q->sym_ptr_ptr != NULL + && *q->sym_ptr_ptr != NULL + && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) + { + /* We found a reloc for the symbol we are looking for. */ + einfo ("%C: %s\n", abfd, sec, q->address, info->warning); + info->found = true; + break; + } + } + free (relpp); +} - if (subfile_wanted_p (archive_member_lang_input_statement_struct) == true) +/* This is called when an undefined symbol is found. */ + +/*ARGSUSED*/ +static boolean +undefined_symbol (info, name, abfd, section, address, fatal) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const char *name; + bfd *abfd; + asection *section; + bfd_vma address; + boolean fatal ATTRIBUTE_UNUSED; +{ + static char *error_name; + static unsigned int error_count; - { - /* This member is needed; load it. - Since we are loading something on this pass, - we must make another pass through the symdef data. */ +#define MAX_ERRORS_IN_A_ROW 5 - not_finished = true; + if (config.warn_once) + { + static struct bfd_hash_table *hash; - Q_enter_file_symbols (archive_member_lang_input_statement_struct); + /* Only warn once about a particular undefined symbol. */ - if (prev) - prev->chain = archive_member_lang_input_statement_struct; - else - entry->subfiles = archive_member_lang_input_statement_struct; + if (hash == NULL) + { + hash = ((struct bfd_hash_table *) + xmalloc (sizeof (struct bfd_hash_table))); + if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) + einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); + } + if (bfd_hash_lookup (hash, name, false, false) != NULL) + return true; - prev = archive_member_lang_input_statement_struct; + if (bfd_hash_lookup (hash, name, true, true) == NULL) + einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); + } + /* We never print more than a reasonable number of errors in a row + for a single symbol. */ + if (error_name != (char *) NULL + && strcmp (name, error_name) == 0) + ++error_count; + else + { + error_count = 0; + if (error_name != (char *) NULL) + free (error_name); + error_name = buystring (name); + } - /* 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); + if (section != NULL) + { + if (error_count < MAX_ERRORS_IN_A_ROW) + { + einfo (_("%C: undefined reference to `%T'\n"), + abfd, section, address, name); + if (fatal) + einfo ("%X"); } + else if (error_count == MAX_ERRORS_IN_A_ROW) + einfo (_("%D: more undefined references to `%T' follow\n"), + abfd, section, address, name); } -} - -void -linear_library (entry) -struct lang_input_statement_struct *entry; -{ - boolean more_to_do = true; - register struct lang_input_statement_struct *prev = 0; - - while (more_to_do) { - - bfd * archive = bfd_openr_next_archived_file(entry->the_bfd,0); - - more_to_do = false; - while (archive) { - if (bfd_check_format(archive, bfd_object)) + else + { + if (error_count < MAX_ERRORS_IN_A_ROW) { - register struct lang_input_statement_struct *subentry; - - subentry = decode_library_subfile (entry, - archive); - - archive->usrdata = (void *) 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; - } - } + einfo (_("%B: undefined reference to `%T'\n"), + abfd, name); + if (fatal) + einfo ("%X"); } - archive = bfd_openr_next_archived_file(entry->the_bfd,archive); - + else if (error_count == MAX_ERRORS_IN_A_ROW) + einfo (_("%B: more undefined references to `%T' follow\n"), + abfd, name); } - } + return true; } - /* ENTRY is an entry for a library member. - Its symbols have been read into core, but not entered. - Return nonzero if we ought to load this member. */ - -boolean -subfile_wanted_p (entry) -struct lang_input_statement_struct *entry; +/* This is called when a reloc overflows. */ + +/*ARGSUSED*/ +static boolean +reloc_overflow (info, name, reloc_name, addend, abfd, section, address) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const char *name; + const char *reloc_name; + bfd_vma addend; + bfd *abfd; + asection *section; + bfd_vma address; { - asymbol **q; + if (abfd == (bfd *) NULL) + einfo (_("%P%X: generated")); + else + einfo ("%X%C:", abfd, section, address); + einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name); + if (addend != 0) + einfo ("+%v", addend); + einfo ("\n"); + return true; +} - for (q = entry->asymbols; *q; q++) - { - asymbol *p = *q; +/* This is called when a dangerous relocation is made. */ + +/*ARGSUSED*/ +static boolean +reloc_dangerous (info, message, abfd, section, address) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const char *message; + bfd *abfd; + asection *section; + bfd_vma address; +{ + if (abfd == (bfd *) NULL) + einfo (_("%P%X: generated")); + else + einfo ("%X%C:", abfd, section, address); + einfo (_("dangerous relocation: %s\n"), message); + return true; +} - /* If the symbol has an interesting definition, we could - potentially want it. */ +/* This is called when a reloc is being generated attached to a symbol + that is not being output. */ + +/*ARGSUSED*/ +static boolean +unattached_reloc (info, name, abfd, section, address) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const char *name; + bfd *abfd; + asection *section; + bfd_vma address; +{ + if (abfd == (bfd *) NULL) + einfo (_("%P%X: generated")); + else + einfo ("%X%C:", abfd, section, address); + einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); + return true; +} - if (p->flags & BSF_FORT_COMM - || p->flags & BSF_GLOBAL) - { - 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 (flag_is_common(p->flags)) - { - /* 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 = (void*)NULL; - - (*( sp->scoms_chain))->flags = BSF_FORT_COMM; - /* 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 *) - (com->the_bfd->usrdata))->common_section == - (asection *)NULL) { - ((lang_input_statement_type *) - (com->the_bfd->usrdata))->common_section = - bfd_make_section(com->the_bfd, "COMMON"); - } - } - ASSERT(p->udata == 0); - } - - else { - if (write_map) - { - info("%I needed due to %s\n",entry, sp->name); - } - return true; - } - } - } - } +/* This is called if link_info.notice_all is set, or when a symbol in + link_info.notice_hash is found. Symbols are put in notice_hash + using the -y option. */ + +static boolean +notice (info, name, abfd, section, value) + struct bfd_link_info *info; + const char *name; + bfd *abfd; + asection *section; + bfd_vma value; +{ + if (! info->notice_all + || (info->notice_hash != NULL + && bfd_hash_lookup (info->notice_hash, name, false, false) != NULL)) + { + if (bfd_is_und_section (section)) + einfo ("%B: reference to %s\n", abfd, name); + else + einfo ("%B: definition of %s\n", abfd, name); } - return false; -} + if (command_line.cref || nocrossref_list != NULL) + add_cref (name, abfd, section, value); + return true; +}