X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=ld%2Flexsup.c;h=aa6c3cdfdefd1851558e2adcabd53cfd612d026c;hb=ce9c0ca18fe50e1e5a87b135032e4aeba415e2ab;hp=b992fca37ab13cdb9ddf4be677304b5777035ad2;hpb=20f3d0d667e035dcb12a142a86fd4b68360fd328;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/lexsup.c b/ld/lexsup.c index b992fca37a..aa6c3cdfde 100644 --- a/ld/lexsup.c +++ b/ld/lexsup.c @@ -1,7 +1,5 @@ /* Parse options for the GNU linker. - Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 - Free Software Foundation, Inc. + Copyright (C) 1991-2015 Free Software Foundation, Inc. This file is part of the GNU Binutils. @@ -40,6 +38,9 @@ #include "ldver.h" #include "ldemul.h" #include "demangle.h" +#ifdef ENABLE_PLUGINS +#include "plugin.h" +#endif /* ENABLE_PLUGINS */ #ifndef PATH_SEPARATOR #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__)) @@ -59,117 +60,6 @@ static void set_section_start (char *, char *); static void set_segment_start (const char *, char *); static void help (void); -/* Non-zero if we are processing a --defsym from the command line. */ -int parsing_defsym = 0; - -/* Codes used for the long options with no short synonyms. 150 isn't - special; it's just an arbitrary non-ASCII char value. */ -enum option_values -{ - OPTION_ASSERT = 150, - OPTION_CALL_SHARED, - OPTION_CREF, - OPTION_DEFSYM, - OPTION_DEMANGLE, - OPTION_DYNAMIC_LINKER, - OPTION_SYSROOT, - OPTION_EB, - OPTION_EL, - OPTION_EMBEDDED_RELOCS, - OPTION_EXPORT_DYNAMIC, - OPTION_NO_EXPORT_DYNAMIC, - OPTION_HELP, - OPTION_IGNORE, - OPTION_MAP, - OPTION_NO_DEMANGLE, - OPTION_NO_KEEP_MEMORY, - OPTION_NO_WARN_MISMATCH, - OPTION_NO_WARN_SEARCH_MISMATCH, - OPTION_NOINHIBIT_EXEC, - OPTION_NON_SHARED, - OPTION_NO_WHOLE_ARCHIVE, - OPTION_OFORMAT, - OPTION_RELAX, - OPTION_NO_RELAX, - OPTION_RETAIN_SYMBOLS_FILE, - OPTION_RPATH, - OPTION_RPATH_LINK, - OPTION_SHARED, - OPTION_SONAME, - OPTION_SORT_COMMON, - OPTION_SORT_SECTION, - OPTION_STATS, - OPTION_SYMBOLIC, - OPTION_SYMBOLIC_FUNCTIONS, - OPTION_TASK_LINK, - OPTION_TBSS, - OPTION_TDATA, - OPTION_TTEXT, - OPTION_TTEXT_SEGMENT, - OPTION_TRADITIONAL_FORMAT, - OPTION_UR, - OPTION_VERBOSE, - OPTION_VERSION, - OPTION_VERSION_SCRIPT, - OPTION_VERSION_EXPORTS_SECTION, - OPTION_DYNAMIC_LIST, - OPTION_DYNAMIC_LIST_CPP_NEW, - OPTION_DYNAMIC_LIST_CPP_TYPEINFO, - OPTION_DYNAMIC_LIST_DATA, - OPTION_WARN_COMMON, - OPTION_WARN_CONSTRUCTORS, - OPTION_WARN_FATAL, - OPTION_NO_WARN_FATAL, - OPTION_WARN_MULTIPLE_GP, - OPTION_WARN_ONCE, - OPTION_WARN_SECTION_ALIGN, - OPTION_SPLIT_BY_RELOC, - OPTION_SPLIT_BY_FILE , - OPTION_WHOLE_ARCHIVE, - OPTION_ADD_DT_NEEDED_FOR_DYNAMIC, - OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC, - OPTION_ADD_DT_NEEDED_FOR_REGULAR, - OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR, - OPTION_WRAP, - OPTION_FORCE_EXE_SUFFIX, - OPTION_GC_SECTIONS, - OPTION_NO_GC_SECTIONS, - OPTION_PRINT_GC_SECTIONS, - OPTION_NO_PRINT_GC_SECTIONS, - OPTION_HASH_SIZE, - OPTION_CHECK_SECTIONS, - OPTION_NO_CHECK_SECTIONS, - OPTION_NO_UNDEFINED, - OPTION_INIT, - OPTION_FINI, - OPTION_SECTION_START, - OPTION_UNIQUE, - OPTION_TARGET_HELP, - OPTION_ALLOW_SHLIB_UNDEFINED, - OPTION_NO_ALLOW_SHLIB_UNDEFINED, - OPTION_ALLOW_MULTIPLE_DEFINITION, - OPTION_NO_UNDEFINED_VERSION, - OPTION_DEFAULT_SYMVER, - OPTION_DEFAULT_IMPORTED_SYMVER, - OPTION_DISCARD_NONE, - OPTION_SPARE_DYNAMIC_TAGS, - OPTION_NO_DEFINE_COMMON, - OPTION_NOSTDLIB, - OPTION_NO_OMAGIC, - OPTION_STRIP_DISCARDED, - OPTION_NO_STRIP_DISCARDED, - OPTION_ACCEPT_UNKNOWN_INPUT_ARCH, - OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH, - OPTION_PIE, - OPTION_UNRESOLVED_SYMBOLS, - OPTION_WARN_UNRESOLVED_SYMBOLS, - OPTION_ERROR_UNRESOLVED_SYMBOLS, - OPTION_WARN_SHARED_TEXTREL, - OPTION_WARN_ALTERNATE_EM, - OPTION_REDUCE_MEMORY_OVERHEADS, - OPTION_DEFAULT_SCRIPT -}; - /* The long options. This structure is used for both the option parsing and the help text. */ @@ -271,6 +161,27 @@ static const struct ld_option ld_options[] = 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, { {NULL, required_argument, NULL, '\0'}, 'O', NULL, N_("Optimize output file"), ONE_DASH }, +#ifdef ENABLE_PLUGINS + { {"plugin", required_argument, NULL, OPTION_PLUGIN}, + '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH }, + { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT}, + '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH }, + { {"flto", optional_argument, NULL, OPTION_IGNORE}, + '\0', NULL, N_("Ignored for GCC LTO option compatibility"), + ONE_DASH }, + { {"flto-partition=", required_argument, NULL, OPTION_IGNORE}, + '\0', NULL, N_("Ignored for GCC LTO option compatibility"), + ONE_DASH }, +#endif /* ENABLE_PLUGINS */ + { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE}, + '\0', NULL, N_("Ignored for GCC linker option compatibility"), + ONE_DASH }, + { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, + '\0', NULL, N_("Ignored for gold option compatibility"), + TWO_DASHES }, + { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, + '\0', NULL, N_("Ignored for gold option compatibility"), + TWO_DASHES }, { {"Qy", no_argument, NULL, OPTION_IGNORE}, '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, { {"emit-relocs", no_argument, NULL, 'q'}, @@ -337,8 +248,7 @@ static const struct ld_option ld_options[] = /* The next two options are deprecated because of their similarity to --as-needed and --no-as-needed. They have been replaced by - --resolve-implicit-dynamic-symbols and - --no-resolve-implicit-dynamic-symbols. */ + --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, '\0', NULL, NULL, NO_HELP }, { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, @@ -436,7 +346,7 @@ static const struct ld_option ld_options[] = '\0', NULL, N_("Do not allow unresolved references in object files"), TWO_DASHES }, { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED}, - '\0', NULL, N_("Allow unresolved references in shared libaries"), + '\0', NULL, N_("Allow unresolved references in shared libraries"), TWO_DASHES }, { {"no-allow-shlib-undefined", no_argument, NULL, OPTION_NO_ALLOW_SHLIB_UNDEFINED}, @@ -473,6 +383,10 @@ static const struct ld_option ld_options[] = { {"oformat", required_argument, NULL, OPTION_OFORMAT}, '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES }, + { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT}, + '\0', NULL, N_("Print default output format"), TWO_DASHES }, + { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT}, + '\0', NULL, N_("Print current sysroot"), TWO_DASHES }, { {"qmagic", no_argument, NULL, OPTION_IGNORE}, '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, { {"reduce-memory-overheads", no_argument, NULL, @@ -500,13 +414,13 @@ static const struct ld_option ld_options[] = { {"pic-executable", no_argument, NULL, OPTION_PIE}, '\0', NULL, NULL, TWO_DASHES }, { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON}, - '\0', N_("[=ascending|descending]"), - N_("Sort common symbols by alignment [in specified order]"), + '\0', N_("[=ascending|descending]"), + N_("Sort common symbols by alignment [in specified order]"), TWO_DASHES }, { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, '\0', NULL, NULL, NO_HELP }, { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION}, - '\0', N_("name|alignment"), + '\0', N_("name|alignment"), N_("Sort sections by name or maximum alignment"), TWO_DASHES }, { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS}, '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"), @@ -536,14 +450,19 @@ static const struct ld_option ld_options[] = '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH }, { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT}, '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, + { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, + '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, + { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT}, + '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH }, { {"unresolved-symbols=", required_argument, NULL, OPTION_UNRESOLVED_SYMBOLS}, '\0', NULL, N_("How to handle unresolved symbols. is:\n" " ignore-all, report-all, ignore-in-object-files,\n" " ignore-in-shared-libs"), TWO_DASHES }, - { {"verbose", no_argument, NULL, OPTION_VERBOSE}, - '\0', NULL, N_("Output lots of information during link"), TWO_DASHES }, + { {"verbose", optional_argument, NULL, OPTION_VERBOSE}, + '\0', N_("[=NUMBER]"), + N_("Output lots of information during link"), TWO_DASHES }, { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */ '\0', NULL, NULL, NO_HELP }, { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT }, @@ -590,6 +509,16 @@ static const struct ld_option ld_options[] = TWO_DASHES }, { {"wrap", required_argument, NULL, OPTION_WRAP}, '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES }, + { {"ignore-unresolved-symbol", required_argument, NULL, + OPTION_IGNORE_UNRESOLVED_SYMBOL}, + '\0', N_("SYMBOL"), + N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES }, + { {"push-state", no_argument, NULL, OPTION_PUSH_STATE}, + '\0', NULL, N_("Push state of flags governing input file handling"), + TWO_DASHES }, + { {"pop-state", no_argument, NULL, OPTION_POP_STATE}, + '\0', NULL, N_("Pop state of flags governing input file handling"), + TWO_DASHES }, }; #define OPTION_COUNT ARRAY_SIZE (ld_options) @@ -707,6 +636,7 @@ parse_args (unsigned argc, char **argv) { int longind; int optc; + static unsigned int defsym_count; /* Using last_optind lets us avoid calling ldemul_parse_args multiple times on a single option, which would lead to @@ -755,10 +685,10 @@ parse_args (unsigned argc, char **argv) ``use only shared libraries'' but, then, we don't currently support shared libraries on HP/UX anyhow. */ if (strcmp (optarg, "archive") == 0) - config.dynamic_link = FALSE; + input_flags.dynamic = FALSE; else if (strcmp (optarg, "shared") == 0 || strcmp (optarg, "default") == 0) - config.dynamic_link = TRUE; + input_flags.dynamic = TRUE; else einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg); break; @@ -787,10 +717,10 @@ parse_args (unsigned argc, char **argv) yyparse (); break; case OPTION_CALL_SHARED: - config.dynamic_link = TRUE; + input_flags.dynamic = TRUE; break; case OPTION_NON_SHARED: - config.dynamic_link = FALSE; + input_flags.dynamic = FALSE; break; case OPTION_CREF: command_line.cref = TRUE; @@ -801,11 +731,9 @@ parse_args (unsigned argc, char **argv) break; case OPTION_DEFSYM: lex_string = optarg; - lex_redirect (optarg); + lex_redirect (optarg, "--defsym", ++defsym_count); parser_input = input_defsym; - parsing_defsym = 1; yyparse (); - parsing_defsym = 0; lex_string = NULL; break; case OPTION_DEMANGLE: @@ -816,7 +744,7 @@ parse_args (unsigned argc, char **argv) style = cplus_demangle_name_to_style (optarg); if (style == unknown_demangling) - einfo (_("%F%P: unknown demangling style `%s'"), + einfo (_("%F%P: unknown demangling style `%s'\n"), optarg); cplus_demangle_set_style (style); @@ -916,17 +844,17 @@ parse_args (unsigned argc, char **argv) case 'N': config.text_read_only = FALSE; config.magic_demand_paged = FALSE; - config.dynamic_link = FALSE; + input_flags.dynamic = FALSE; break; case OPTION_NO_OMAGIC: config.text_read_only = TRUE; config.magic_demand_paged = TRUE; - /* NB/ Does not set dynamic_link to TRUE. + /* NB/ Does not set input_flags.dynamic to TRUE. Use --call-shared or -Bdynamic for this. */ break; case 'n': config.magic_demand_paged = FALSE; - config.dynamic_link = FALSE; + input_flags.dynamic = FALSE; break; case OPTION_NO_DEFINE_COMMON: command_line.inhibit_common_definition = TRUE; @@ -1022,7 +950,7 @@ parse_args (unsigned argc, char **argv) config.only_cmd_line_lib_dirs = TRUE; break; case OPTION_NO_WHOLE_ARCHIVE: - whole_archive = FALSE; + input_flags.whole_archive = FALSE; break; case 'O': /* FIXME "-O " used to set the address of @@ -1040,6 +968,23 @@ parse_args (unsigned argc, char **argv) case OPTION_OFORMAT: lang_add_output_format (optarg, NULL, NULL, 0); break; + case OPTION_PRINT_SYSROOT: + if (*ld_sysroot) + puts (ld_sysroot); + xexit (0); + break; + case OPTION_PRINT_OUTPUT_FORMAT: + command_line.print_output_format = TRUE; + break; +#ifdef ENABLE_PLUGINS + case OPTION_PLUGIN: + plugin_opt_plugin (optarg); + break; + case OPTION_PLUGIN_OPT: + if (plugin_opt_plugin_arg (optarg)) + einfo(_("%P%F: bad -plugin-opt option\n")); + break; +#endif /* ENABLE_PLUGINS */ case 'q': link_info.emitrelocations = TRUE; break; @@ -1054,13 +999,13 @@ parse_args (unsigned argc, char **argv) an error message here. We cannot just make this a warning, increment optind, and continue because getopt is too confused and will seg-fault the next time around. */ - einfo(_("%P%F: bad -rpath option\n")); + einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]); link_info.relocatable = TRUE; config.build_constructors = FALSE; config.magic_demand_paged = FALSE; config.text_read_only = FALSE; - config.dynamic_link = FALSE; + input_flags.dynamic = FALSE; break; case 'R': /* The GNU linker traditionally uses -R to mean to include @@ -1181,7 +1126,11 @@ parse_args (unsigned argc, char **argv) break; case 'h': /* Used on Solaris. */ case OPTION_SONAME: - command_line.soname = optarg; + if (optarg[0] == '\0' && command_line.soname + && command_line.soname[0]) + einfo (_("%P: SONAME must not be empty string; keeping previous one\n")); + else + command_line.soname = optarg; break; case OPTION_SORT_COMMON: if (optarg == NULL @@ -1270,6 +1219,12 @@ parse_args (unsigned argc, char **argv) case OPTION_TTEXT_SEGMENT: set_segment_start (".text-segment", optarg); break; + case OPTION_TRODATA_SEGMENT: + set_segment_start (".rodata-segment", optarg); + break; + case OPTION_TLDATA_SEGMENT: + set_segment_start (".ldata-segment", optarg); + break; case OPTION_TRADITIONAL_FORMAT: link_info.traditional_format = TRUE; break; @@ -1281,10 +1236,10 @@ parse_args (unsigned argc, char **argv) config.build_constructors = TRUE; config.magic_demand_paged = FALSE; config.text_read_only = FALSE; - config.dynamic_link = FALSE; + input_flags.dynamic = FALSE; break; case 'u': - ldlang_add_undef (optarg); + ldlang_add_undef (optarg, TRUE); break; case OPTION_UNIQUE: if (optarg != NULL) @@ -1295,8 +1250,18 @@ parse_args (unsigned argc, char **argv) case OPTION_VERBOSE: ldversion (1); version_printed = TRUE; - trace_file_tries = TRUE; + verbose = TRUE; overflow_cutoff_limit = -2; + if (optarg != NULL) + { + char *end; + int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); + if (*end) + einfo (_("%P%F: invalid number `%s'\n"), optarg); +#ifdef ENABLE_PLUGINS + report_plugin_symbols = level > 1; +#endif /* ENABLE_PLUGINS */ + } break; case 'v': ldversion (0); @@ -1395,23 +1360,26 @@ parse_args (unsigned argc, char **argv) link_info.warn_alternate_em = TRUE; break; case OPTION_WHOLE_ARCHIVE: - whole_archive = TRUE; + input_flags.whole_archive = TRUE; break; case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC: - add_DT_NEEDED_for_dynamic = TRUE; + input_flags.add_DT_NEEDED_for_dynamic = TRUE; break; case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC: - add_DT_NEEDED_for_dynamic = FALSE; + input_flags.add_DT_NEEDED_for_dynamic = FALSE; break; case OPTION_ADD_DT_NEEDED_FOR_REGULAR: - add_DT_NEEDED_for_regular = TRUE; + input_flags.add_DT_NEEDED_for_regular = TRUE; break; case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR: - add_DT_NEEDED_for_regular = FALSE; + input_flags.add_DT_NEEDED_for_regular = FALSE; break; case OPTION_WRAP: add_wrap (optarg); break; + case OPTION_IGNORE_UNRESOLVED_SYMBOL: + add_ignoresym (&link_info, optarg); + break; case OPTION_DISCARD_NONE: link_info.discard = discard_none; break; @@ -1495,9 +1463,32 @@ parse_args (unsigned argc, char **argv) einfo (_("%P%X: --hash-size needs a numeric argument\n")); } break; + + case OPTION_PUSH_STATE: + input_flags.pushed = xmemdup (&input_flags, + sizeof (input_flags), + sizeof (input_flags)); + break; + + case OPTION_POP_STATE: + if (input_flags.pushed == NULL) + einfo (_("%P%F: no state pushed before popping\n")); + else + { + struct lang_input_statement_flags *oldp = input_flags.pushed; + memcpy (&input_flags, oldp, sizeof (input_flags)); + free (oldp); + } + break; } } + if (command_line.soname && command_line.soname[0] == '\0') + { + einfo (_("%P: SONAME must not be empty string; ignored\n")); + command_line.soname = NULL; + } + while (ingroup) { lang_leave_group (); @@ -1517,6 +1508,72 @@ parse_args (unsigned argc, char **argv) if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET) /* FIXME: Should we allow emulations a chance to set this ? */ link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols; + + if (link_info.relocatable) + { + if (command_line.check_section_addresses < 0) + command_line.check_section_addresses = 0; + if (link_info.shared) + einfo (_("%P%F: -r and -shared may not be used together\n")); + } + + /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, + --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and + --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are + for shared libraries. -Bsymbolic overrides all others and vice + versa. */ + switch (command_line.symbolic) + { + case symbolic_unset: + break; + case symbolic: + /* -Bsymbolic is for shared library only. */ + if (link_info.shared) + { + link_info.symbolic = TRUE; + /* Should we free the unused memory? */ + link_info.dynamic_list = NULL; + command_line.dynamic_list = dynamic_list_unset; + } + break; + case symbolic_functions: + /* -Bsymbolic-functions is for shared library only. */ + if (link_info.shared) + command_line.dynamic_list = dynamic_list_data; + break; + } + + switch (command_line.dynamic_list) + { + case dynamic_list_unset: + break; + case dynamic_list_data: + link_info.dynamic_data = TRUE; + case dynamic_list: + link_info.dynamic = TRUE; + break; + } + + if (! link_info.shared) + { + if (command_line.filter_shlib) + einfo (_("%P%F: -F may not be used without -shared\n")); + if (command_line.auxiliary_filters) + einfo (_("%P%F: -f may not be used without -shared\n")); + } + + if (! link_info.shared || link_info.pie) + link_info.executable = TRUE; + + /* 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.relocatable && link_info.strip == strip_all) + { + link_info.strip = strip_debugger; + if (link_info.discard == discard_sec_merge) + link_info.discard = discard_all; + } } /* Add the (colon-separated) elements of DIRLIST_PTR to the