X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Fldmain.c;h=e7a8dff9d262fe7d44bf3521c2815894593f44e8;hb=c092a4d9154f09e6c67648efb723878d7a74f44f;hp=bc38beaa4c93d3a8be520c1190ac7564719eb727;hpb=89cdebba1358d2b68fe98449be80bbc3338ebda5;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/ldmain.c b/ld/ldmain.c index bc38beaa4c..e7a8dff9d2 100644 --- a/ld/ldmain.c +++ b/ld/ldmain.c @@ -1,29 +1,27 @@ /* Main program of GNU linker. - Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000 - Free Software Foundation, Inc. + Copyright (C) 1991-2016 Free Software Foundation, Inc. Written by Steve Chamberlain steve@cygnus.com -This file is part of GLD, the Gnu Linker. + This file is part of the GNU Binutils. -GLD is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. + This program 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 3 of the License, or + (at your option) any later version. -GLD is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. -You should have received a copy of the GNU General Public License -along with GLD; see the file COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ -#include "bfd.h" #include "sysdep.h" -#include -#include +#include "bfd.h" +#include "safe-ctype.h" #include "libiberty.h" #include "progress.h" #include "bfdlink.h" @@ -33,15 +31,19 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "ldmain.h" #include "ldmisc.h" #include "ldwrite.h" -#include "ldgram.h" #include "ldexp.h" #include "ldlang.h" +#include #include "ldlex.h" #include "ldfile.h" #include "ldemul.h" #include "ldctor.h" +#ifdef ENABLE_PLUGINS +#include "plugin.h" +#include "plugin-api.h" +#endif /* ENABLE_PLUGINS */ -/* Somewhere above, sys/stat.h got included . . . . */ +/* Somewhere above, sys/stat.h got included. */ #if !defined(S_ISDIR) && defined(S_IFDIR) #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) #endif @@ -49,88 +51,95 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include #ifdef HAVE_SBRK -#ifdef NEED_DECLARATION_SBRK -extern PTR sbrk (); +#if !HAVE_DECL_SBRK +extern void *sbrk (); #endif #endif -static char *get_emulation PARAMS ((int, char **)); -static void set_scripts_dir PARAMS ((void)); +#ifndef TARGET_SYSTEM_ROOT +#define TARGET_SYSTEM_ROOT "" +#endif /* EXPORTS */ +FILE *saved_script_handle = NULL; +FILE *previous_script_handle = NULL; +bfd_boolean force_make_executable = FALSE; + char *default_target; const char *output_filename = "a.out"; /* Name this program was invoked by. */ char *program_name; -/* The file that we're creating. */ -bfd *output_bfd = 0; +/* The prefix for system library directories. */ +const char *ld_sysroot; -/* Set by -G argument, for MIPS ECOFF target. */ +/* The canonical representation of ld_sysroot. */ +char *ld_canon_sysroot; +int ld_canon_sysroot_len; + +/* Set by -G argument, for targets like MIPS ELF. */ int g_switch_value = 8; /* Nonzero means print names of input files as processed. */ -boolean trace_files; +bfd_boolean trace_files; -/* Nonzero means same, but note open failures, too. */ -boolean trace_file_tries; +/* Nonzero means report actions taken by the linker, and describe the linker script in use. */ +bfd_boolean verbose; /* Nonzero means version number was printed, so exit successfully instead of complaining if no input files are given. */ -boolean version_printed; - -/* Nonzero means link in every member of an archive. */ -boolean whole_archive; +bfd_boolean version_printed; -/* True if we should demangle symbol names. */ -boolean demangling; +/* TRUE if we should demangle symbol names. */ +bfd_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 = { +sort_type sort_section; + +static const char *get_sysroot + (int, char **); +static char *get_emulation + (int, char **); +static bfd_boolean add_archive_element + (struct bfd_link_info *, bfd *, const char *, bfd **); +static void multiple_definition + (struct bfd_link_info *, struct bfd_link_hash_entry *, + bfd *, asection *, bfd_vma); +static void multiple_common + (struct bfd_link_info *, struct bfd_link_hash_entry *, + bfd *, enum bfd_link_hash_type, bfd_vma); +static void add_to_set + (struct bfd_link_info *, struct bfd_link_hash_entry *, + bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); +static void constructor_callback + (struct bfd_link_info *, bfd_boolean, const char *, bfd *, + asection *, bfd_vma); +static void warning_callback + (struct bfd_link_info *, const char *, const char *, bfd *, + asection *, bfd_vma); +static void warning_find_reloc + (bfd *, asection *, void *); +static void undefined_symbol + (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, + bfd_boolean); +static void reloc_overflow + (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, + const char *, bfd_vma, bfd *, asection *, bfd_vma); +static void reloc_dangerous + (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); +static void unattached_reloc + (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); +static bfd_boolean notice + (struct bfd_link_info *, struct bfd_link_hash_entry *, + struct bfd_link_hash_entry *, bfd *, asection *, bfd_vma, flagword); + +static struct bfd_link_callbacks link_callbacks = +{ add_archive_element, multiple_definition, multiple_common, @@ -141,33 +150,53 @@ static struct bfd_link_callbacks link_callbacks = { reloc_overflow, reloc_dangerous, unattached_reloc, - notice + notice, + einfo, + info_msg, + minfo, + ldlang_override_segment_assignment }; +static bfd_assert_handler_type default_bfd_assert_handler; + struct bfd_link_info link_info; static void -remove_output () +ld_cleanup (void) { - if (output_filename) - { - if (output_bfd && output_bfd->iostream) - fclose ((FILE *) (output_bfd->iostream)); - if (delete_output_file_on_failure) - unlink (output_filename); - } + bfd_cache_close_all (); +#ifdef ENABLE_PLUGINS + plugin_call_cleanup (); +#endif + if (output_filename && delete_output_file_on_failure) + unlink_if_ordinary (output_filename); +} + +/* If there's a BFD assertion, we'll notice and exit with an error + unless otherwise instructed. */ + +static void +ld_bfd_assert_handler (const char *fmt, const char *bfdver, + const char *file, int line) +{ + (*default_bfd_assert_handler) (fmt, bfdver, file, line); + config.make_executable = FALSE; } int -main (argc, argv) - int argc; - char **argv; +main (int argc, char **argv) { char *emulation; long start_time = get_run_time (); +#ifdef HAVE_SBRK + char *start_sbrk = (char *) sbrk (0); +#endif #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) setlocale (LC_MESSAGES, ""); +#endif +#if defined (HAVE_SETLOCALE) + setlocale (LC_CTYPE, ""); #endif bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); @@ -177,35 +206,57 @@ main (argc, argv) START_PROGRESS (program_name, 0); + expandargv (&argc, &argv); + bfd_init (); bfd_set_error_program_name (program_name); - xatexit (remove_output); + /* We want to notice and fail on those nasty BFD assertions which are + likely to signal incorrect output being generated but otherwise may + leave no trace. */ + default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler); + + xatexit (ld_cleanup); + + /* Set up the sysroot directory. */ + ld_sysroot = get_sysroot (argc, argv); + if (*ld_sysroot) + ld_canon_sysroot = lrealpath (ld_sysroot); + if (ld_canon_sysroot) + ld_canon_sysroot_len = strlen (ld_canon_sysroot); + else + ld_canon_sysroot_len = -1; /* 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)) + if (!bfd_set_default_target (TARGET)) { einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); xexit (1); } - /* 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; +#if YYDEBUG + { + extern int yydebug; + yydebug = 1; + } +#endif + + config.build_constructors = TRUE; + config.rpath_separator = ':'; config.split_by_reloc = (unsigned) -1; config.split_by_file = (bfd_size_type) -1; - 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; + config.make_executable = TRUE; + config.magic_demand_paged = TRUE; + config.text_read_only = TRUE; + link_info.disable_target_specific_optimizations = -1; + + command_line.warn_mismatch = TRUE; + command_line.warn_search_mismatch = TRUE; + command_line.check_section_addresses = -1; /* We initialize DEMANGLING based on the environment variable COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the @@ -214,116 +265,132 @@ main (argc, argv) interface by default. */ demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; + link_info.allow_undefined_version = TRUE; + link_info.keep_memory = TRUE; + link_info.combreloc = TRUE; + link_info.strip_discarded = TRUE; + link_info.emit_hash = TRUE; 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; + link_info.input_bfds_tail = &link_info.input_bfds; /* 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"; - link_info.new_dtags = false; - link_info.flags = (bfd_vma) 0; - link_info.flags_1 = (bfd_vma) 0; + link_info.relax_pass = 1; + link_info.extern_protected_data = -1; + link_info.dynamic_undefined_weak = -1; + link_info.pei386_auto_import = -1; + link_info.spare_dynamic_tags = 5; + link_info.path_separator = ':'; +#ifdef DEFAULT_FLAG_COMPRESS_DEBUG + link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB; +#endif 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; - emulation = get_emulation (argc, argv); ldemul_choose_mode (emulation); - default_target = ldemul_choose_target (); + default_target = ldemul_choose_target (argc, argv); + config.maxpagesize = bfd_emul_get_maxpagesize (default_target); + config.commonpagesize = bfd_emul_get_commonpagesize (default_target); lang_init (); + ldexp_init (); ldemul_before_parse (); - lang_has_input_file = false; + lang_has_input_file = FALSE; parse_args (argc, argv); + if (config.hash_table_size != 0) + bfd_hash_set_default_size (config.hash_table_size); + +#ifdef ENABLE_PLUGINS + /* Now all the plugin arguments have been gathered, we can load them. */ + plugin_load_plugins (); +#endif /* ENABLE_PLUGINS */ + ldemul_set_symbols (); - if (link_info.relocateable) + /* If we have not already opened and parsed a linker script, + try the default script from command line first. */ + if (saved_script_handle == NULL + && command_line.default_script != NULL) { - 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")); + ldfile_open_command_file (command_line.default_script); + parser_input = input_script; + yyparse (); } - /* 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) + /* If we have not already opened and parsed a linker script + read the emulation's appropriate default script. */ + if (saved_script_handle == NULL) { - 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); + ldfile_open_default_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); + lex_redirect (s, _("built in linker script"), 1); } parser_input = input_script; yyparse (); lex_string = NULL; } + if (verbose) + { + if (saved_script_handle) + info_msg (_("using external linker script:")); + else + info_msg (_("using internal linker script:")); + info_msg ("\n==================================================\n"); + + if (saved_script_handle) + { + static const int ld_bufsz = 8193; + size_t n; + char *buf = (char *) xmalloc (ld_bufsz); + + rewind (saved_script_handle); + while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) + { + buf[n] = 0; + info_msg (buf); + } + rewind (saved_script_handle); + free (buf); + } + else + { + int isfile; + + info_msg (ldemul_get_script (&isfile)); + } + + info_msg ("\n==================================================\n"); + } + + if (command_line.print_output_format) + info_msg ("%s\n", lang_get_output_target ()); + lang_final (); - if (lang_has_input_file == false) + /* If the only command line argument has been -v or --version or --verbose + then ignore any input files provided by linker scripts and exit now. + We do not want to create an output file when the linker is just invoked + to provide version information. */ + if (argc == 2 && version_printed) + xexit (0); + + if (!lang_has_input_file) { - if (version_printed) + if (version_printed || command_line.print_output_format) 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 (); @@ -349,26 +416,18 @@ main (argc, argv) /* Print error messages for any missing symbols, for any warning symbols, and possibly multiple definitions. */ + if (bfd_link_relocatable (&link_info)) + link_info.output_bfd->flags &= ~EXEC_P; + else + link_info.output_bfd->flags |= EXEC_P; - if (! link_info.relocateable) + if ((link_info.compress_debug & COMPRESS_DEBUG)) { - /* Look for a text section and switch the readonly attribute in it. */ - asection *found = bfd_get_section_by_name (output_bfd, ".text"); - - if (found != (asection *) NULL) - { - if (config.text_read_only) - found->flags |= SEC_READONLY; - else - found->flags &= ~SEC_READONLY; - } + link_info.output_bfd->flags |= BFD_COMPRESS; + if (link_info.compress_debug == COMPRESS_DEBUG_GABI_ZLIB) + link_info.output_bfd->flags |= BFD_COMPRESS_GABI; } - if (link_info.relocateable) - output_bfd->flags &= ~EXEC_P; - else - output_bfd->flags |= EXEC_P; - ldwrite (); if (config.map_file != NULL) @@ -377,34 +436,44 @@ main (argc, argv) output_cref (config.map_file != NULL ? config.map_file : stdout); if (nocrossref_list != NULL) check_nocrossrefs (); + if (command_line.print_memory_usage) + lang_print_memory_usage (); +#if 0 + { + struct bfd_link_hash_entry *h; - /* 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?) */ + h = bfd_link_hash_lookup (link_info.hash, "__image_base__", 0,0,1); + fprintf (stderr, "lookup = %p val %lx\n", h, h ? h->u.def.value : 1); + } +#endif + ldexp_finish (); + lang_finish (); - if (config.make_executable == false && force_make_executable == false) + /* Even if we're producing relocatable output, some non-fatal errors should + be reported in the exit status. (What non-fatal errors, if any, do we + want to ignore for relocatable output?) */ + if (!config.make_executable && !force_make_executable) { - if (trace_files == true) - { - einfo (_("%P: link errors found, deleting executable `%s'\n"), - output_filename); - } - - /* The file will be removed by remove_output. */ + if (trace_files) + einfo (_("%P: link errors found, deleting executable `%s'\n"), + output_filename); + /* The file will be removed by ld_cleanup. */ xexit (1); } else { - if (! bfd_close (output_bfd)) - einfo (_("%F%B: final close failed: %E\n"), output_bfd); + if (!bfd_close (link_info.output_bfd)) + einfo (_("%F%B: final close failed: %E\n"), link_info.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) + if (!bfd_link_relocatable (&link_info) + && 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)) @@ -412,31 +481,32 @@ main (argc, argv) FILE *src; FILE *dst; const int bsize = 4096; - char *buf = xmalloc (bsize); + char *buf = (char *) xmalloc (bsize); int l; - char *dst_name = xmalloc (len + 5); + char *dst_name = (char *) 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); + einfo (_("%P%F: 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); + einfo (_("%P%F: 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); - } + einfo (_("%P: Error writing file `%s'\n"), dst_name); } + fclose (src); if (fclose (dst) == EOF) - { - einfo (_("%P: Error closing file `%s'\n"), dst_name); - } + einfo (_("%P: Error closing file `%s'\n"), dst_name); free (dst_name); free (buf); } @@ -452,28 +522,73 @@ main (argc, argv) #endif long run_time = get_run_time () - start_time; + fflush (stdout); 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)); + (long) (lim - start_sbrk)); #endif + fflush (stderr); } - /* Prevent remove_output from doing anything, after a successful link. */ + /* Prevent ld_cleanup from doing anything, after a successful link. */ output_filename = NULL; xexit (0); return 0; } +/* If the configured sysroot is relocatable, try relocating it based on + default prefix FROM. Return the relocated directory if it exists, + otherwise return null. */ + +static char * +get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) +{ +#ifdef TARGET_SYSTEM_ROOT_RELOCATABLE + char *path; + struct stat s; + + path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); + if (path) + { + if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) + return path; + free (path); + } +#endif + return 0; +} + +/* Return the sysroot directory. Return "" if no sysroot is being used. */ + +static const char * +get_sysroot (int argc, char **argv) +{ + int i; + const char *path; + + for (i = 1; i < argc; i++) + if (CONST_STRNEQ (argv[i], "--sysroot=")) + return argv[i] + strlen ("--sysroot="); + + path = get_relative_sysroot (BINDIR); + if (path) + return path; + + path = get_relative_sysroot (TOOLBINDIR); + if (path) + return path; + + return TARGET_SYSTEM_ROOT; +} + /* 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; +get_emulation (int argc, char **argv) { char *emulation; int i; @@ -484,7 +599,7 @@ get_emulation (argc, argv) for (i = 1; i < argc; i++) { - if (!strncmp (argv[i], "-m", 2)) + if (CONST_STRNEQ (argv[i], "-m")) { if (argv[i][2] == '\0') { @@ -495,16 +610,21 @@ get_emulation (argc, argv) i++; } 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], "-mips4") == 0) + || strcmp (argv[i], "-mips4") == 0 + || strcmp (argv[i], "-mips5") == 0 + || strcmp (argv[i], "-mips32") == 0 + || strcmp (argv[i], "-mips32r2") == 0 + || strcmp (argv[i], "-mips32r6") == 0 + || strcmp (argv[i], "-mips64") == 0 + || strcmp (argv[i], "-mips64r2") == 0 + || strcmp (argv[i], "-mips64r6") == 0) { - /* FIXME: The arguments -mips1, -mips2 and -mips3 are + /* FIXME: The arguments -mips1, -mips2, -mips3, etc. 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 @@ -529,130 +649,65 @@ get_emulation (argc, argv) return emulation; } -/* If directory DIR contains an "ldscripts" subdirectory, - add DIR to the library search path and return true, - else return false. */ - -static boolean -check_for_scripts_dir (dir) - char *dir; -{ - 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) */ - -static void -set_scripts_dir () +void +add_ysym (const char *name) { - char *end, *dir; - size_t dirlen; - - if (check_for_scripts_dir (SCRIPTDIR)) - /* We've been installed normally. */ - return; - - /* Look for "ldscripts" in the dir where our binary is. */ - end = strrchr (program_name, '/'); -#ifdef HAVE_DOS_BASED_FILE_SYSTEM - { - /* We could have \foo\bar, or /foo\bar. */ - char *bslash = strrchr (program_name, '\\'); - if (end == NULL || (bslash != NULL && bslash > end)) - end = bslash; - } -#endif - - if (end == NULL) + if (link_info.notice_hash == NULL) { - /* Don't look for ldscripts in the current directory. There is - too much potential for confusion. */ - return; + 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, + sizeof (struct bfd_hash_entry), + 61)) + einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); } - 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)) - /* Don't free dir. */ - return; - - /* Look for "ldscripts" in /../lib. */ - strcpy (dir + dirlen, "/../lib"); - if (check_for_scripts_dir (dir)) - return; - - /* Well, we tried. */ - free (dir); + if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) + einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); } void -add_ysym (name) - const char *name; +add_ignoresym (struct bfd_link_info *info, const char *name) { - if (link_info.notice_hash == (struct bfd_hash_table *) NULL) + if (info->ignore_hash == 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)) + info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table)); + if (!bfd_hash_table_init_n (info->ignore_hash, + bfd_hash_newfunc, + sizeof (struct bfd_hash_entry), + 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) + if (bfd_hash_lookup (info->ignore_hash, name, TRUE, TRUE) == NULL) einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); } /* Record a symbol to be wrapped, from the --wrap option. */ void -add_wrap (name) - const char *name; +add_wrap (const char *name) { 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)) + 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, + sizeof (struct bfd_hash_entry), + 61)) einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); } - if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) + + 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; +add_keepsyms_file (const char *filename) { FILE *file; char *buf; @@ -663,16 +718,17 @@ add_keepsyms_file (filename) einfo (_("%X%P: error: duplicate retain-symbols-file\n")); file = fopen (filename, "r"); - if (file == (FILE *) NULL) + if (file == NULL) { bfd_set_error (bfd_error_system_call); einfo ("%X%P: %s: %E\n", filename); 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)) + 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, + sizeof (struct bfd_hash_entry))) einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); bufsize = 100; @@ -681,29 +737,28 @@ add_keepsyms_file (filename) c = getc (file); while (c != EOF) { - while (isspace (c)) + while (ISSPACE (c)) c = getc (file); if (c != EOF) { size_t len = 0; - while (! isspace (c) && c != EOF) + while (!ISSPACE (c) && c != EOF) { buf[len] = c; ++len; if (len >= bufsize) { bufsize *= 2; - buf = xrealloc (buf, bufsize); + buf = (char *) xrealloc (buf, bufsize); } c = getc (file); } buf[len] = '\0'; - if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) - == (struct bfd_hash_entry *) NULL) + if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); } } @@ -711,7 +766,9 @@ add_keepsyms_file (filename) if (link_info.strip != strip_none) einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); + free (buf); link_info.strip = strip_some; + fclose (file); } /* Callbacks from the BFD linker routines. */ @@ -719,41 +776,58 @@ add_keepsyms_file (filename) /* This is called when BFD has decided to include an archive member in a link. */ -static boolean -add_archive_element (info, abfd, name) - struct bfd_link_info *info ATTRIBUTE_UNUSED; - bfd *abfd; - const char *name; +static bfd_boolean +add_archive_element (struct bfd_link_info *info, + bfd *abfd, + const char *name, + bfd **subsbfd ATTRIBUTE_UNUSED) { lang_input_statement_type *input; + lang_input_statement_type orig_input; - input = ((lang_input_statement_type *) - xmalloc (sizeof (lang_input_statement_type))); + input = (lang_input_statement_type *) + xcalloc (1, 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. */ + + /* Save the original data for trace files/tries below, as plugins + (if enabled) may possibly alter it to point to a replacement + BFD, but we still want to output the original BFD filename. */ + orig_input = *input; +#ifdef ENABLE_PLUGINS + if (link_info.lto_plugin_active) + { + /* We must offer this archive member to the plugins to claim. */ + plugin_maybe_claim (input); + if (input->flags.claimed) + { + if (no_more_claiming) + { + /* Don't claim new IR symbols after all IR symbols have + been claimed. */ + if (trace_files || verbose) + info_msg ("%I: no new IR symbols to claimi\n", + &orig_input); + input->flags.claimed = 0; + return FALSE; + } + input->flags.claim_archive = TRUE; + *subsbfd = input->the_bfd; + } + } +#endif /* ENABLE_PLUGINS */ ldlang_add_file (input); - if (config.map_file != (FILE *) NULL) + if (config.map_file != NULL) { - static boolean header_printed; + static bfd_boolean header_printed; struct bfd_link_hash_entry *h; bfd *from; int len; - h = bfd_link_hash_lookup (link_info.hash, name, false, false, true); + h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); if (h == NULL) from = NULL; @@ -781,26 +855,27 @@ add_archive_element (info, abfd, name) } } - if (! header_printed) + if (!header_printed) { char buf[100]; - sprintf (buf, "%-29s %s\n\n", _("Archive member included"), - _("because of file (symbol)")); + sprintf (buf, _("Archive member included " + "to satisfy reference by file (symbol)\n\n")); minfo ("%s", buf); - header_printed = true; + header_printed = TRUE; } - if (bfd_my_archive (abfd) == NULL) + if (abfd->my_archive == NULL + || bfd_is_thin_archive (abfd->my_archive)) { minfo ("%s", bfd_get_filename (abfd)); len = strlen (bfd_get_filename (abfd)); } else { - minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), + minfo ("%s(%s)", bfd_get_filename (abfd->my_archive), bfd_get_filename (abfd)); - len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) + len = (strlen (bfd_get_filename (abfd->my_archive)) + strlen (bfd_get_filename (abfd)) + 2); } @@ -824,51 +899,84 @@ add_archive_element (info, abfd, name) minfo ("(%s)\n", name); } - if (trace_files || trace_file_tries) - info_msg ("%I\n", input); - - return true; + if (trace_files || verbose) + info_msg ("%I\n", &orig_input); + return TRUE; } /* This is called when BFD has discovered a symbol which is defined multiple times. */ -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; +static void +multiple_definition (struct bfd_link_info *info, + struct bfd_link_hash_entry *h, + bfd *nbfd, + asection *nsec, + bfd_vma nval) { + const char *name; + bfd *obfd; + asection *osec; + bfd_vma oval; + + if (info->allow_multiple_definition) + return; + + switch (h->type) + { + case bfd_link_hash_defined: + osec = h->u.def.section; + oval = h->u.def.value; + obfd = h->u.def.section->owner; + break; + case bfd_link_hash_indirect: + osec = bfd_ind_section_ptr; + oval = 0; + obfd = NULL; + break; + default: + abort (); + } + + /* Ignore a redefinition of an absolute symbol to the + same value; it's harmless. */ + if (h->type == bfd_link_hash_defined + && bfd_is_abs_section (osec) + && bfd_is_abs_section (nsec) + && nval == oval) + return; + /* 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) && bfd_is_abs_section (osec->output_section)) || (nsec->output_section != NULL - && ! bfd_is_abs_section (nsec) + && !bfd_is_abs_section (nsec) && bfd_is_abs_section (nsec->output_section))) - return true; + return; + name = h->root.string; + if (nbfd == NULL) + { + nbfd = obfd; + nsec = osec; + nval = oval; + obfd = NULL; + } einfo (_("%X%C: multiple definition of `%T'\n"), nbfd, nsec, nval, name); - if (obfd != (bfd *) NULL) + if (obfd != NULL) einfo (_("%D: first defined here\n"), obfd, osec, oval); - if (command_line.relax) + if (RELAXATION_ENABLED_BY_USER) { einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); - command_line.relax = 0; + DISABLE_RELAXATION; } - - return true; } /* This is called when there is a definition of a common symbol, or @@ -876,19 +984,42 @@ multiple_definition (info, name, obfd, osec, oval, nbfd, nsec, nval) or when two common symbols are found. We only do something if -warn-common was used. */ -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; +static void +multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, + struct bfd_link_hash_entry *h, + bfd *nbfd, + enum bfd_link_hash_type ntype, + bfd_vma nsize) { - if (! config.warn_common) - return true; + const char *name; + bfd *obfd; + enum bfd_link_hash_type otype; + bfd_vma osize; + + if (!config.warn_common) + return; + + name = h->root.string; + otype = h->type; + if (otype == bfd_link_hash_common) + { + obfd = h->u.c.p->section->owner; + osize = h->u.c.size; + } + else if (otype == bfd_link_hash_defined + || otype == bfd_link_hash_defweak) + { + obfd = h->u.def.section->owner; + osize = 0; + } + else + { + /* FIXME: It would nice if we could report the BFD which defined + an indirect symbol, but we don't have anywhere to store the + information. */ + obfd = NULL; + osize = 0; + } if (ntype == bfd_link_hash_defined || ntype == bfd_link_hash_defweak @@ -934,31 +1065,28 @@ multiple_common (info, name, obfd, otype, osize, nbfd, ntype, nsize) einfo (_("%B: warning: previous common is here\n"), obfd); } } - - return true; } /* 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. */ -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; +static void +add_to_set (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) { if (config.warn_constructors) einfo (_("%P: warning: global constructor %s used\n"), h->root.string); - if (! config.build_constructors) - return true; + if (!config.build_constructors) + return; - ldctor_add_set_entry (h, reloc, (const char *) NULL, section, value); + ldctor_add_set_entry (h, reloc, NULL, section, value); if (h->type == bfd_link_hash_new) { @@ -968,8 +1096,6 @@ add_to_set (info, h, reloc, abfd, section, value) undefined symbols because we are going to define it ourselves. */ } - - return true; } /* This is called when BFD has discovered a constructor. This is only @@ -977,14 +1103,13 @@ add_to_set (info, h, reloc, abfd, section, value) 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; +static void +constructor_callback (struct bfd_link_info *info, + bfd_boolean constructor, + const char *name, + bfd *abfd, + asection *section, + bfd_vma value) { char *s; struct bfd_link_hash_entry *h; @@ -993,13 +1118,13 @@ constructor_callback (info, constructor, name, abfd, section, value) if (config.warn_constructors) einfo (_("%P: warning: global constructor %s used\n"), name); - if (! config.build_constructors) - return true; + if (!config.build_constructors) + return; /* 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 + if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL + && (bfd_link_relocatable (info) || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); @@ -1011,7 +1136,7 @@ constructor_callback (info, constructor, name, abfd, section, value) else strcpy (s, "__DTOR_LIST__"); - h = bfd_link_hash_lookup (info->hash, set_name, true, true, true); + 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) @@ -1024,87 +1149,69 @@ constructor_callback (info, constructor, name, abfd, section, value) } ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); - return true; } /* A structure used by warning_callback to pass information through bfd_map_over_sections. */ -struct warning_callback_info { - boolean found; +struct warning_callback_info +{ + bfd_boolean found; const char *warning; const char *symbol; asymbol **asymbols; }; +/* Look through the relocs to see if we can find a plausible address + for SYMBOL in ABFD. Return TRUE if found. Otherwise return FALSE. */ + +static bfd_boolean +symbol_warning (const char *warning, const char *symbol, bfd *abfd) +{ + struct warning_callback_info cinfo; + + if (!bfd_generic_link_read_symbols (abfd)) + einfo (_("%B%F: could not read symbols: %E\n"), abfd); + + cinfo.found = FALSE; + cinfo.warning = warning; + cinfo.symbol = symbol; + cinfo.asymbols = bfd_get_outsymbols (abfd); + bfd_map_over_sections (abfd, warning_find_reloc, &cinfo); + return cinfo.found; +} + /* This is called when there is a reference to a warning symbol. */ -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; +static void +warning_callback (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 + if (!config.warn_multiple_gp && strcmp (warning, "using multiple gp values") == 0) - return true; + return; if (section != NULL) - einfo ("%C: %s\n", abfd, section, address, warning); + einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); else if (abfd == NULL) - einfo ("%P: %s\n", warning); + einfo ("%P: %s%s\n", _("warning: "), warning); else if (symbol == NULL) - einfo ("%B: %s\n", abfd, warning); - else + einfo ("%B: %s%s\n", abfd, _("warning: "), warning); + else if (!symbol_warning (warning, symbol, abfd)) { - lang_input_statement_type *entry; - asymbol **asymbols; - struct warning_callback_info info; - - /* Look through the relocs to see if we can find a plausible - address. */ - - 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; - } - } - - info.found = false; - info.warning = warning; - info.symbol = symbol; - info.asymbols = asymbols; - bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info); - - if (! info.found) - einfo ("%B: %s\n", abfd, warning); - - if (entry == NULL) - free (asymbols); + bfd *b; + /* Search all input files for a reference to SYMBOL. */ + for (b = info->input_bfds; b; b = b->link.next) + if (b != abfd && symbol_warning (warning, symbol, b)) + return; + einfo ("%B: %s%s\n", abfd, _("warning: "), warning); } - - return true; } /* This is called by warning_callback for each section. It checks the @@ -1113,10 +1220,7 @@ warning_callback (info, warning, symbol, abfd, section, address) to give an error message with a file and line number. */ static void -warning_find_reloc (abfd, sec, iarg) - bfd *abfd; - asection *sec; - PTR iarg; +warning_find_reloc (bfd *abfd, asection *sec, void *iarg) { struct warning_callback_info *info = (struct warning_callback_info *) iarg; long relsize; @@ -1149,8 +1253,9 @@ warning_find_reloc (abfd, sec, iarg) && 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; + einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), + info->warning); + info->found = TRUE; break; } } @@ -1160,159 +1265,213 @@ warning_find_reloc (abfd, sec, iarg) /* This is called when an undefined symbol is found. */ -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 void +undefined_symbol (struct bfd_link_info *info, + const char *name, + bfd *abfd, + asection *section, + bfd_vma address, + bfd_boolean error) { static char *error_name; static unsigned int error_count; #define MAX_ERRORS_IN_A_ROW 5 + if (info->ignore_hash != NULL + && bfd_hash_lookup (info->ignore_hash, name, FALSE, FALSE) != NULL) + return; + if (config.warn_once) { - static struct bfd_hash_table *hash; - /* Only warn once about a particular undefined symbol. */ - - 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; - - if (bfd_hash_lookup (hash, name, true, true) == NULL) - einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); + add_ignoresym (info, name); } /* We never print more than a reasonable number of errors in a row for a single symbol. */ - if (error_name != (char *) NULL + if (error_name != NULL && strcmp (name, error_name) == 0) ++error_count; else { error_count = 0; - if (error_name != (char *) NULL) + if (error_name != NULL) free (error_name); - error_name = buystring (name); + error_name = xstrdup (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"); + if (error) + einfo (_("%X%C: undefined reference to `%T'\n"), + abfd, section, address, name); + else + einfo (_("%C: warning: undefined reference to `%T'\n"), + abfd, section, address, name); } else if (error_count == MAX_ERRORS_IN_A_ROW) - einfo (_("%D: more undefined references to `%T' follow\n"), - abfd, section, address, name); + { + if (error) + einfo (_("%X%D: more undefined references to `%T' follow\n"), + abfd, section, address, name); + else + einfo (_("%D: warning: more undefined references to `%T' follow\n"), + abfd, section, address, name); + } + else if (error) + einfo ("%X"); } else { if (error_count < MAX_ERRORS_IN_A_ROW) { - einfo (_("%B: undefined reference to `%T'\n"), - abfd, name); - if (fatal) - einfo ("%X"); + if (error) + einfo (_("%X%B: undefined reference to `%T'\n"), + abfd, name); + else + einfo (_("%B: warning: undefined reference to `%T'\n"), + abfd, name); } else if (error_count == MAX_ERRORS_IN_A_ROW) - einfo (_("%B: more undefined references to `%T' follow\n"), - abfd, name); + { + if (error) + einfo (_("%X%B: more undefined references to `%T' follow\n"), + abfd, name); + else + einfo (_("%B: warning: more undefined references to `%T' follow\n"), + abfd, name); + } + else if (error) + einfo ("%X"); } - - return true; } +/* Counter to limit the number of relocation overflow error messages + to print. Errors are printed as it is decremented. When it's + called and the counter is zero, a final message is printed + indicating more relocations were omitted. When it gets to -1, no + such errors are printed. If it's initially set to a value less + than -1, all such errors will be printed (--verbose does this). */ + +int overflow_cutoff_limit = 10; + /* This is called when a reloc overflows. */ -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; +static void +reloc_overflow (struct bfd_link_info *info, + struct bfd_link_hash_entry *entry, + const char *name, + const char *reloc_name, + bfd_vma addend, + bfd *abfd, + asection *section, + bfd_vma address) { - if (abfd == (bfd *) NULL) - einfo (_("%P%X: generated")); + if (overflow_cutoff_limit == -1) + return; + + einfo ("%X%H:", abfd, section, address); + + if (overflow_cutoff_limit >= 0 + && overflow_cutoff_limit-- == 0) + { + einfo (_(" additional relocation overflows omitted from the output\n")); + return; + } + + if (entry) + { + while (entry->type == bfd_link_hash_indirect + || entry->type == bfd_link_hash_warning) + entry = entry->u.i.link; + switch (entry->type) + { + case bfd_link_hash_undefined: + case bfd_link_hash_undefweak: + einfo (_(" relocation truncated to fit: " + "%s against undefined symbol `%T'"), + reloc_name, entry->root.string); + break; + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + einfo (_(" relocation truncated to fit: " + "%s against symbol `%T' defined in %A section in %B"), + reloc_name, entry->root.string, + entry->u.def.section, + entry->u.def.section == bfd_abs_section_ptr + ? info->output_bfd : entry->u.def.section->owner); + break; + default: + abort (); + break; + } + } else - einfo ("%X%C:", abfd, section, address); - einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name); + einfo (_(" relocation truncated to fit: %s against `%T'"), + reloc_name, name); if (addend != 0) einfo ("+%v", addend); einfo ("\n"); - return true; } /* This is called when a dangerous relocation is made. */ -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; +static void +reloc_dangerous (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; + einfo (_("%X%H: dangerous relocation: %s\n"), + abfd, section, address, message); } /* This is called when a reloc is being generated attached to a symbol that is not being output. */ -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; +static void +unattached_reloc (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; + einfo (_("%X%H: reloc refers to symbol `%T' which is not being output\n"), + abfd, section, address, name); } /* 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; + using the -y option, while notice_all is set if the --cref option + has been supplied, or if there are any NOCROSSREFS sections in the + linker script; and if plugins are active, since they need to monitor + all references from non-IR files. */ + +static bfd_boolean +notice (struct bfd_link_info *info, + struct bfd_link_hash_entry *h, + struct bfd_link_hash_entry *inh ATTRIBUTE_UNUSED, + bfd *abfd, + asection *section, + bfd_vma value, + flagword flags ATTRIBUTE_UNUSED) { - if (! info->notice_all - || (info->notice_hash != NULL - && bfd_hash_lookup (info->notice_hash, name, false, false) != NULL)) + const char *name; + + if (h == NULL) + { + if (command_line.cref || nocrossref_list != NULL) + return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); + return TRUE; + } + + name = h->root.string; + if (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); @@ -1323,5 +1482,5 @@ notice (info, name, abfd, section, value) if (command_line.cref || nocrossref_list != NULL) add_cref (name, abfd, section, value); - return true; + return TRUE; }