X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fldmain.c;h=ba2a5923e3e64442366fdaad94c270efc2a0878b;hb=99a4150f8bbe52591984a85bb86b820e85776b38;hp=30baa964a64642902aa824d0b5196579b54f6fc1;hpb=973e421e6705f6428eca3d79047066e39335891f;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/ldmain.c b/ld/ldmain.c index 30baa964a6..ba2a5923e3 100644 --- a/ld/ldmain.c +++ b/ld/ldmain.c @@ -1,4 +1,6 @@ -/* 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. @@ -14,28 +16,29 @@ 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. */ - +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 +#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 "ldemul.h" #include "ldlex.h" #include "ldfile.h" -#include "ldindr.h" -#include "ldwarn.h" #include "ldctor.h" -#include "lderror.h" /* Somewhere above, sys/stat.h got included . . . . */ #if !defined(S_ISDIR) && defined(S_IFDIR) @@ -44,19 +47,19 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #include -static char *get_emulation (); -static void set_scripts_dir (); +#ifdef HAVE_SBRK +#ifdef NEED_DECLARATION_SBRK +extern PTR sbrk (); +#endif +#endif -/* IMPORTS */ -extern boolean lang_has_input_file; -extern boolean force_make_executable; -extern boolean relaxing; -extern boolean had_script; +static char *get_emulation PARAMS ((int, char **)); +static void set_scripts_dir PARAMS ((void)); /* EXPORTS */ char *default_target; -char *output_filename = "a.out"; +const char *output_filename = "a.out"; /* Name this program was invoked by. */ char *program_name; @@ -64,94 +67,179 @@ char *program_name; /* The file that we're creating */ bfd *output_bfd = 0; -/* 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; - /* Nonzero means print names of input files as processed. */ boolean trace_files; /* Nonzero means same, but note open failures, too. */ boolean trace_file_tries; -/* 1 => write load map. */ -boolean write_map; - -#ifdef GNU960 -/* Indicates whether output file will be b.out (default) or coff */ -enum target_flavour output_flavor = BFD_BOUT_FORMAT; -#endif - -/* A count of the total number of local symbols ever seen - by adding - the symbol_count field of each newly read afile.*/ +/* Nonzero means version number was printed, so exit successfully + instead of complaining if no input files are given. */ +boolean version_printed; -unsigned int total_symbols_seen; +/* Nonzero means link in every member of an archive. */ +boolean whole_archive; -/* A count of the number of read files - the same as the number of elements - in file_chain - */ -unsigned int total_files_seen; +/* True if we should demangle symbol names. */ +boolean demangling; args_type command_line; 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; -void +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) - char **argv; int argc; + char **argv; { char *emulation; + long start_time = get_run_time (); + +#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) + setlocale (LC_MESSAGES, ""); +#endif + bindtextdomain (PACKAGE, LOCALEDIR); + textdomain (PACKAGE); program_name = argv[0]; + xmalloc_set_program_name (program_name); + + START_PROGRESS (program_name, 0); bfd_init (); - /* Initialize the data about options. */ + 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); + } - trace_files = trace_file_tries = false; - write_map = false; - config.relocateable_output = false; + /* 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.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"; - 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; - multiple_def_count = 0; - commons_pending = 0; - config.magic_demand_paged = true; config.text_read_only = true; config.make_executable = true; @@ -164,6 +252,30 @@ main (argc, argv) 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 (); @@ -175,32 +287,36 @@ main (argc, argv) char *s = ldemul_get_script (&isfile); if (isfile) + ldfile_open_command_file (s); + else { - /* sizeof counts the terminating NUL. */ - size_t size = strlen (s) + sizeof ("-T "); - char *buf = (char *) ldmalloc(size); - sprintf (buf, "-T %s", s); - parse_line (buf, 0); - free (buf); + 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); } - else - parse_line (s, 1); + parser_input = input_script; + yyparse (); + lex_string = NULL; } - if (config.relocateable_output && command_line.relax) - { - einfo ("%P%F: -relax and -r may not be used together\n"); - } lang_final (); if (lang_has_input_file == false) { - einfo ("%P%F: no input files\n"); + if (version_printed) + xexit (0); + einfo (_("%P%F: no input files\n")); } if (trace_files) { - info_msg ("%P: mode %s\n", emulation); + info_msg (_("%P: mode %s\n"), emulation); } ldemul_after_parse (); @@ -217,7 +333,8 @@ main (argc, argv) config.map_file = fopen (config.map_filename, FOPEN_WT); if (config.map_file == (FILE *) NULL) { - einfo ("%P%F: cannot open map file %s: %E\n", + bfd_set_error (bfd_error_system_call); + einfo (_("%P%F: cannot open map file %s: %E\n"), config.map_filename); } } @@ -241,13 +358,20 @@ main (argc, argv) } } - if (config.relocateable_output) + if (link_info.relocateable) output_bfd->flags &= ~EXEC_P; else output_bfd->flags |= EXEC_P; ldwrite (); + 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?) */ @@ -256,22 +380,85 @@ main (argc, argv) { if (trace_files == true) { - einfo ("%P: link errors found, deleting executable `%s'\n", + einfo (_("%P: link errors found, deleting executable `%s'\n"), output_filename); } - if (output_bfd->iostream) - fclose ((FILE *) (output_bfd->iostream)); + /* The file will be removed by remove_output. */ - unlink (output_filename); - exit (1); + xexit (1); } else { - bfd_close (output_bfd); + if (! bfd_close (output_bfd)) + einfo (_("%F%B: final close failed: %E\n"), output_bfd); + + /* 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. */ + + 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 } - exit (0); + /* Prevent remove_output from doing anything, after a successful link. */ + output_filename = NULL; + + xexit (0); + return 0; } /* We need to find any explicitly given emulation in order to initialize the @@ -285,23 +472,9 @@ get_emulation (argc, argv) char *emulation; int i; -#ifdef GNU960 - 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); + emulation = getenv (EMULATION_ENVIRON); if (emulation == NULL) emulation = DEFAULT_EMULATION; -#endif for (i = 1; i < argc; i++) { @@ -317,12 +490,13 @@ get_emulation (argc, argv) } else { - einfo("%P%F: missing argument to -m\n"); + 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], "-mips3") == 0 + || strcmp (argv[i], "-mips4") == 0) { /* FIXME: The arguments -mips1, -mips2 and -mips3 are passed to the linker by some MIPS compilers. They @@ -332,6 +506,12 @@ get_emulation (argc, argv) 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 */ @@ -358,13 +538,13 @@ check_for_scripts_dir (dir) dirlen = strlen (dir); /* sizeof counts the terminating NUL. */ - buf = (char *) ldmalloc (dirlen + sizeof("/ldscripts")); + 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); + ldfile_add_library_path (dir, false); return res; } @@ -387,22 +567,21 @@ set_scripts_dir () /* Look for "ldscripts" in the dir where our binary is. */ end = strrchr (program_name, '/'); - if (end) - { - dirlen = end - program_name; - /* Make a copy of program_name in dir. - Leave room for later "/../lib". */ - dir = (char *) ldmalloc (dirlen + 8); - strncpy (dir, program_name, dirlen); - dir[dirlen] = '\0'; - } - else + + if (end == NULL) { - dirlen = 1; - dir = (char *) ldmalloc (dirlen + 8); - strcpy (dir, "."); + /* Don't look for ldscripts in the current directory. There is + too much potential for confusion. */ + return; } + 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'; + if (check_for_scripts_dir (dir)) return; /* Don't free dir. */ @@ -415,830 +594,720 @@ set_scripts_dir () } void -read_entry_symbols (desc, entry) - bfd *desc; - struct lang_input_statement_struct *entry; +add_ysym (name) + const char *name; { - if (entry->asymbols == (asymbol **) NULL) + if (link_info.notice_hash == (struct bfd_hash_table *) 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); - } + 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")); } -/* - * turn this item into a reference - */ +/* Record a symbol to be wrapped, from the --wrap option. */ + void -refize (sp, nlist_p) - ldsym_type *sp; - asymbol **nlist_p; +add_wrap (name) + const char *name; { - asymbol *sym = *nlist_p; - - sym->value = 0; - - /* FIXME: Why do we clear the flags here? This used to set the - flags to zero, but we must not clear BSF_WEAK. */ - sym->flags &= BSF_WEAK; - - sym->section = &bfd_und_section; - sym->udata = (PTR) (sp->srefs_chain); - sp->srefs_chain = nlist_p; + if (link_info.wrap_hash == NULL) + { + 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")); } -/* -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. -*/ +/* Handle the -retain-symbols-file option. */ void -enter_global_ref (nlist_p, name) - asymbol ** nlist_p; /* pointer into symbol table from incoming bfd */ - CONST char *name; /* name of symbol in linker table */ +add_keepsyms_file (filename) + const char *filename; { - 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. + FILE *file; + char *buf; + size_t bufsize; + int c; - 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 (link_info.strip == strip_some) + einfo (_("%X%P: error: duplicate retain-symbols-file\n")); + file = fopen (filename, "r"); + if (file == (FILE *) NULL) + { + bfd_set_error (bfd_error_system_call); + einfo ("%X%P: %s: %E\n", filename); + return; + } - if (sym->udata) - return; + 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")); + bufsize = 100; + buf = (char *) xmalloc (bufsize); - if (this_symbol_flags & BSF_CONSTRUCTOR) - { - /* 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 ((sym->flags & BSF_WEAK) != 0 - && (sp->sdefs_chain != NULL || sp->scoms_chain != NULL)) + c = getc (file); + while (c != EOF) { - /* SYM is a weak symbol for which we already have a definition. - Just ignore it. The UnixWare linker is order dependent: if a - global symbol follows a weak symbol it gives an error; if a - weak symbol follows a global symbol it does not. We are - compatible. */ - } - else - { - if (bfd_is_com_section (sym->section)) + while (isspace (c)) + c = getc (file); + + if (c != EOF) { - /* 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 */ - if (config.warn_common) - multiple_warn("%C: warning: common of `%s' overridden by definition\n", - sym, - "%C: warning: defined here\n", - *(sp->sdefs_chain)); - 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 */ - if (config.warn_common) - multiple_warn("%C: warning: common of `%s' overridden by larger common\n", - sym, - "%C: warning: larger common is here\n", - *(sp->scoms_chain)); - refize (sp, nlist_p); - } - else if (sp->scoms_chain != nlist_p) - { - /* other common is smaller, throw that away */ - if (config.warn_common) - { - if ((*(sp->scoms_chain))->value < sym->value) - multiple_warn("%C: warning: common of `%s' overriding smaller common\n", - sym, - "%C: warning: smaller common is here\n", - *(sp->scoms_chain)); - else - multiple_warn("%C: warning: multiple common of `%s'\n", - sym, - "%C: warning: previous common is here\n", - *(sp->scoms_chain)); - } - refize (sp, sp->scoms_chain); - sp->scoms_chain = nlist_p; - } - } - else + size_t len = 0; + + while (! isspace (c) && c != EOF) { - /* 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) + buf[len] = c; + ++len; + if (len >= bufsize) { - /* Turn this into a ref */ - refize (sp, nlist_p); + bufsize *= 2; + buf = xrealloc (buf, bufsize); } - 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_warn("%X%C: multiple definition of `%s'\n", - sym, - "%X%C: first defined here\n", - *(sp->sdefs_chain)); - multiple_def_count++; - } - else - { - sym->udata = (PTR) (sp->sdefs_chain); - sp->sdefs_chain = nlist_p; + c = getc (file); } - /* A definition overrides a common symbol */ - if (sp->scoms_chain != NULL) - { - if (config.warn_common) - multiple_warn("%C: warning: definition of `%s' overriding common\n", - sym, - "%C: warning: common is here\n", - *(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++; - } + buf[len] = '\0'; - refize (sp, nlist_p); + 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")); } } - ASSERT (sp->sdefs_chain == 0 || sp->scoms_chain == 0); - ASSERT (sp->scoms_chain == 0 || (*(sp->scoms_chain))->udata == 0); -} - -static void -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 (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. */ - if (trace_files || trace_file_tries) - { - info_msg ("%I\n", entry); - } +/* This is called when BFD has decided to include an archive member in + a link. */ - total_symbols_seen += entry->symbol_count; - total_files_seen++; - if (entry->symbol_count) +/*ARGSUSED*/ +static boolean +add_archive_element (info, abfd, name) + struct bfd_link_info *info ATTRIBUTE_UNUSED; + bfd *abfd; + const char *name; +{ + 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) { - for (q = entry->asymbols; *q; q++) - { - asymbol *p = *q; + static boolean header_printed; + struct bfd_link_hash_entry *h; + bfd *from; + int len; - 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); - } - } + h = bfd_link_hash_lookup (link_info.hash, name, false, false, true); - if (p->section == &bfd_ind_section - || (p->flags & BSF_INDIRECT) != 0) - { - add_indirect (q); - } - else if (p->flags & BSF_WARNING) - { - add_warning (p); - } - else if (bfd_is_com_section (p->section)) - { - enter_global_ref (q, p->name); - - /* If this is not bfd_com_section, make sure we have a - section of this name in the bfd. We need this - because some targets that use multiple common - sections do not actually put the common section in - the BFD, but we need it there so that a wildcard - specification in the linker script (e.g., - *(.scommon)) will find the section and attach it to - the right output section. When an section is chosed - for the common symbols (in lang_common) that section - must have been correctly given an output section. - For normal common symbols we just use - entry->common_section, initialized above. */ - if (p->section != &bfd_com_section - && p->section->owner != entry->the_bfd) - bfd_make_section (entry->the_bfd, - bfd_get_section_name (p->section->owner, - p->section)); - } - else if (p->section == &bfd_und_section - || (p->flags & BSF_GLOBAL) - || (p->flags & BSF_CONSTRUCTOR) - || (p->flags & BSF_WEAK)) + if (h == NULL) + from = NULL; + else + { + switch (h->type) { - enter_global_ref (q, p->name); + 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; } } - } -} - -/* Searching libraries */ + if (! header_printed) + { + char buf[100]; -struct lang_input_statement_struct *decode_library_subfile (); -void linear_library (), symdef_library (); + sprintf (buf, "%-29s %s\n\n", _("Archive member included"), + _("because of file (symbol)")); + minfo ("%s", buf); + header_printed = true; + } -/* 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. */ + if (bfd_my_archive (abfd) == NULL) + { + minfo ("%s", bfd_get_filename (abfd)); + len = strlen (bfd_get_filename (abfd)); + } + else + { + 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); + } -void -search_library (entry) - struct lang_input_statement_struct *entry; -{ + if (len >= 29) + { + print_nl (); + len = 0; + } + while (len < 30) + { + print_space (); + ++len; + } - /* No need to load a library if no undefined symbols */ - if (!undefined_global_sym_count) - return; + if (from != NULL) + minfo ("%B ", from); + if (h != NULL) + minfo ("(%T)\n", h->root.string); + else + minfo ("(%s)\n", name); + } - if (bfd_has_map (entry->the_bfd)) - symdef_library (entry); - else - linear_library (entry); + if (trace_files || trace_file_tries) + info_msg ("%I\n", input); + return true; } -#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; - } - +/* This is called when BFD has discovered a symbol which is defined + multiple times. */ - return false; +/*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; +{ + /* 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; } -#endif +/* 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. */ -void -ldmain_open_file_read_symbol (entry) - struct lang_input_statement_struct *entry; +/*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; { - if (entry->asymbols == (asymbol **) NULL - && entry->real == true - && entry->filename != (char *) NULL) - { - ldfile_open_file (entry); + if (! config.warn_common) + return true; - -#ifdef GNU960 - if (gnu960_check_format (entry->the_bfd, bfd_object)) -#else - if (bfd_check_format (entry->the_bfd, bfd_object)) -#endif + 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) { - entry->the_bfd->usrdata = (PTR) entry; - - - 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); - - enter_file_symbols (entry); + 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); } -#ifdef GNU960 - else if (gnu960_check_format (entry->the_bfd, bfd_archive)) -#else - else if (bfd_check_format (entry->the_bfd, bfd_archive)) -#endif + else if (nsize > osize) { - entry->the_bfd->usrdata = (PTR) entry; - - entry->subfiles = (lang_input_statement_type *) NULL; - search_library (entry); + 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 ("%F%B: malformed input file (not rel or archive) \n", - entry->the_bfd); + einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); + if (obfd != NULL) + einfo (_("%B: warning: previous common is here\n"), obfd); } } + return true; } -/* 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. */ +/* 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. */ -lang_input_statement_type * -decode_library_subfile (library_entry, subfile_offset) - struct lang_input_statement_struct *library_entry; - bfd *subfile_offset; +/*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 *subentry; + if (config.warn_constructors) + einfo (_("%P: warning: global constructor %s used\n"), + h->root.string); + if (! config.build_constructors) + return true; - /* 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. */ + ldctor_add_set_entry (h, reloc, (const char *) NULL, section, value); - if (subfile_offset->usrdata - && ((struct lang_input_statement_struct *) subfile_offset->usrdata)-> - loaded == true) + if (h->type == bfd_link_hash_new) { - subentry = (struct lang_input_statement_struct *) subfile_offset->usrdata; + 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. */ } - 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; + + return true; } -boolean subfile_wanted_p (); -void -clear_syms (entry, offset) - struct lang_input_statement_struct *entry; - file_ptr offset; +/* 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; { - carsym *car; - unsigned long indx = bfd_get_next_mapent (entry->the_bfd, - BFD_NO_MORE_SYMBOLS, - &car); + 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__"); - while (indx != BFD_NO_MORE_SYMBOLS) + 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) { - if (car->file_offset == offset) - { - car->name = 0; - } - indx = bfd_get_next_mapent (entry->the_bfd, indx, &car); + 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. */ } + ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); + return true; } -/* Search a library that has a map - */ -void -symdef_library (entry) - struct lang_input_statement_struct *entry; +/* A structure used by warning_callback to pass information through + bfd_map_over_sections. */ +struct warning_callback_info { - register struct lang_input_statement_struct *prev = 0; + boolean found; + const char *warning; + const char *symbol; + asymbol **asymbols; +}; - boolean not_finished = true; +/* This is called when there is a reference to a warning symbol. */ - while (not_finished == true) +/*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 { - 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); + lang_input_statement_type *entry; + asymbol **asymbols; + struct warning_callback_info info; - not_finished = false; + /* Look through the relocs to see if we can find a plausible + address. */ - while (idx != BFD_NO_MORE_SYMBOLS && undefined_global_sym_count) + entry = (lang_input_statement_type *) abfd->usrdata; + if (entry != NULL && entry->asymbols != NULL) + asymbols = entry->asymbols; + else { - - if (exported_library_name->name) + 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; + } + } - 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) - { + info.found = false; + info.warning = warning; + info.symbol = symbol; + info.asymbols = asymbols; + bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info); - prev_archive_member_bfd = archive_member_bfd; + if (! info.found) + einfo ("%B: %s\n", abfd, warning); - /* Read the symbol table of the archive member. */ + if (entry == NULL) + free (asymbols); + } - if (archive_member_bfd->usrdata != (PTR) NULL) - { + return true; +} - archive_member_lang_input_statement_struct = (lang_input_statement_type *) archive_member_bfd->usrdata; - } - else - { +/* 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. */ - archive_member_lang_input_statement_struct = - decode_library_subfile (entry, archive_member_bfd); - archive_member_bfd->usrdata = (PTR) archive_member_lang_input_statement_struct; +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; - if (archive_member_lang_input_statement_struct == 0) - { - einfo ("%F%I contains invalid archive member %s\n", - entry, sp->name); - } + 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; - if (archive_member_lang_input_statement_struct->loaded == false) - { + 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); - read_entry_symbols (archive_member_bfd, archive_member_lang_input_statement_struct); - /* Now scan the symbol table and decide whether to load. */ + p = relpp; + pend = p + relcount; + for (; p < pend && *p != NULL; p++) + { + arelent *q = *p; + 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; + } + } - if (subfile_wanted_p (archive_member_lang_input_statement_struct) == true) + free (relpp); +} - { - /* This member is needed; load it. - Since we are loading something on this pass, - we must make another pass through the symdef data. */ +/* This is called when an undefined symbol is found. */ - not_finished = true; +/*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; +{ + static char *error_name; + static unsigned int error_count; - enter_file_symbols (archive_member_lang_input_statement_struct); +#define MAX_ERRORS_IN_A_ROW 5 - if (prev) - prev->chain = archive_member_lang_input_statement_struct; - else - entry->subfiles = archive_member_lang_input_statement_struct; + if (config.warn_once) + { + static struct bfd_hash_table *hash; + /* Only warn once about a particular undefined symbol. */ - prev = 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; - /* 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 (bfd_hash_lookup (hash, name, true, true) == NULL) + einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); } -} - -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) + /* 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 { - if (entry->the_bfd->xvec->flavour != bfd_target_ieee_flavour) + error_count = 0; + if (error_name != (char *) NULL) + free (error_name); + error_name = buystring (name); + } + if (section != NULL) + { + if (error_count < MAX_ERRORS_IN_A_ROW) { - /* 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); + einfo (_("%C: undefined reference to `%T'\n"), + abfd, section, address, name); + if (fatal) + einfo ("%X"); } - entry->complained = true; - + else if (error_count == MAX_ERRORS_IN_A_ROW) + einfo (_("%D: more undefined references to `%T' follow\n"), + abfd, section, address, name); } - while (more_to_do) + else { - - bfd *archive = bfd_openr_next_archived_file (entry->the_bfd, 0); - - more_to_do = false; - while (archive) + if (error_count < MAX_ERRORS_IN_A_ROW) { - /* 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) - { - read_entry_symbols (archive, subentry); - - if (subfile_wanted_p (subentry) == true) - { - 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); - + einfo (_("%B: undefined reference to `%T'\n"), + abfd, name); + if (fatal) + einfo ("%X"); } - + 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 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 */ +/* This is called when a reloc overflows. */ -boolean -subfile_wanted_p (entry) - struct lang_input_statement_struct *entry; +/*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 (entry->symbol_count == 0) - return false; - - for (q = entry->asymbols; *q; q++) - { - asymbol *p = *q; - - /* If the symbol has an interesting definition, we could - potentially want it. */ + 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; +} - if (p->flags & BSF_INDIRECT) - { - /** add_indirect(q);*/ - } +/* This is called when a dangerous relocation is made. */ - if (bfd_is_com_section (p->section) - || (p->flags & BSF_GLOBAL) - || (p->flags & BSF_INDIRECT) - || (p->flags & BSF_WEAK)) - { - register ldsym_type *sp = ldsym_get_soft (p->name); +/*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 this symbol has not been hashed, - we can't be looking for it. */ - if (sp != (ldsym_type *) NULL - && sp->sdefs_chain == (asymbol **) NULL) - { - int check; - - /* A weak symbol is not considered to be a reference - when pulling files out of an archive. An unresolved - weak symbol winds up with a value of zero. See the - SVR4 ABI, p. 4-27. */ - if (sp->scoms_chain != (asymbol **) NULL) - check = 1; - else if (sp->srefs_chain == (asymbol **) NULL) - check = 0; - else - { - asymbol **ptr; +/* This is called when a reloc is being generated attached to a symbol + that is not being output. */ - check = 0; - for (ptr = sp->srefs_chain; - ptr != (asymbol **) NULL; - ptr = (asymbol **) ((*ptr)->udata)) - { - if (((*ptr)->flags & BSF_WEAK) == 0) - { - check = 1; - break; - } - } - } +/*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 (check) - { - /* This is a symbol we are looking for. It is - either common or not yet defined. 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)) - { +/* 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. */ - /* 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_msg ("%I needed due to %s\n", entry, sp->name); - } - return true; - } - } - } - } +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); -void -add_ysym (text) - char *text; -{ - ldsym_type *lookup = ldsym_get (text); - lookup->flags |= SYM_Y; - had_y = 1; + return true; }