+void
+One_option::register_option()
+{
+ if (!ready_to_register)
+ return;
+
+ registered_options.push_back(this);
+
+ // We can't make long_options a static Option_map because we can't
+ // guarantee that will be initialized before register_option() is
+ // first called.
+ if (long_options == NULL)
+ long_options = new Option_map;
+
+ // TWO_DASHES means that two dashes are preferred, but one is ok too.
+ if (!this->longname.empty())
+ (*long_options)[this->longname] = this;
+
+ const int shortname_as_int = static_cast<int>(this->shortname);
+ gold_assert(shortname_as_int >= 0 && shortname_as_int < 128);
+ if (this->shortname != '\0')
+ {
+ gold_assert(short_options[shortname_as_int] == NULL);
+ short_options[shortname_as_int] = this;
+ }
+}
+
+void
+One_option::print() const
+{
+ bool comma = false;
+ printf(" ");
+ int len = 2;
+ if (this->shortname != '\0')
+ {
+ len += printf("-%c", this->shortname);
+ if (this->helparg)
+ {
+ // -z takes long-names only.
+ gold_assert(this->dashes != DASH_Z);
+ len += printf(" %s", gettext(this->helparg));
+ }
+ comma = true;
+ }
+ if (!this->longname.empty()
+ && !(this->longname[0] == this->shortname
+ && this->longname[1] == '\0'))
+ {
+ if (comma)
+ len += printf(", ");
+ switch (this->dashes)
+ {
+ case options::ONE_DASH: case options::EXACTLY_ONE_DASH:
+ len += printf("-");
+ break;
+ case options::TWO_DASHES: case options::EXACTLY_TWO_DASHES:
+ len += printf("--");
+ break;
+ case options::DASH_Z:
+ len += printf("-z ");
+ break;
+ default:
+ gold_unreachable();
+ }
+ len += printf("%s", this->longname.c_str());
+ if (this->helparg)
+ {
+ // For most options, we print "--frob FOO". But for -z
+ // we print "-z frob=FOO".
+ len += printf("%c%s", this->dashes == options::DASH_Z ? '=' : ' ',
+ gettext(this->helparg));
+ }
+ }
+
+ if (len >= 30)
+ {
+ printf("\n");
+ len = 0;
+ }
+ for (; len < 30; ++len)
+ std::putchar(' ');
+
+ printf("%s", gettext(this->helpstring));
+ if (this->is_default)
+ printf(" (%s)", _("default"));
+ printf("\n");
+}
+
+void
+help()
+{
+ printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name);
+
+ std::vector<const One_option*>::const_iterator it;
+ for (it = registered_options.begin(); it != registered_options.end(); ++it)
+ (*it)->print();
+
+ // config.guess and libtool.m4 look in ld --help output for the
+ // string "supported targets".
+ printf(_("%s: supported targets:"), gold::program_name);
+ std::vector<const char*> supported_names;
+ gold::supported_target_names(&supported_names);
+ for (std::vector<const char*>::const_iterator p = supported_names.begin();
+ p != supported_names.end();
+ ++p)
+ printf(" %s", *p);
+ printf("\n");
+
+ printf(_("%s: supported emulations:"), gold::program_name);
+ supported_names.clear();
+ gold::supported_emulation_names(&supported_names);
+ for (std::vector<const char*>::const_iterator p = supported_names.begin();
+ p != supported_names.end();
+ ++p)
+ printf(" %s", *p);
+ printf("\n");
+
+ // REPORT_BUGS_TO is defined in bfd/bfdver.h.
+ const char* report = REPORT_BUGS_TO;
+ if (*report != '\0')
+ printf(_("Report bugs to %s\n"), report);
+}
+
+// For bool, arg will be NULL (boolean options take no argument);
+// we always just set to true.
+void
+parse_bool(const char*, const char*, bool* retval)
+{
+ *retval = true;
+}
+
+void
+parse_uint(const char* option_name, const char* arg, int* retval)
+{
+ char* endptr;
+ *retval = strtol(arg, &endptr, 0);
+ if (*endptr != '\0' || *retval < 0)
+ gold_fatal(_("%s: invalid option value (expected an integer): %s"),
+ option_name, arg);
+}
+
+void
+parse_int(const char* option_name, const char* arg, int* retval)
+{
+ char* endptr;
+ *retval = strtol(arg, &endptr, 0);
+ if (*endptr != '\0')
+ gold_fatal(_("%s: invalid option value (expected an integer): %s"),
+ option_name, arg);
+}
+
+void
+parse_uint64(const char* option_name, const char* arg, uint64_t* retval)
+{
+ char* endptr;
+ *retval = strtoull(arg, &endptr, 0);
+ if (*endptr != '\0')
+ gold_fatal(_("%s: invalid option value (expected an integer): %s"),
+ option_name, arg);
+}
+
+void
+parse_double(const char* option_name, const char* arg, double* retval)
+{
+ char* endptr;
+ *retval = strtod(arg, &endptr);
+ if (*endptr != '\0')
+ gold_fatal(_("%s: invalid option value "
+ "(expected a floating point number): %s"),
+ option_name, arg);
+}
+
+void
+parse_percent(const char* option_name, const char* arg, double* retval)
+{
+ char* endptr;
+ *retval = strtod(arg, &endptr) / 100.0;
+ if (*endptr != '\0')
+ gold_fatal(_("%s: invalid option value "
+ "(expected a floating point number): %s"),
+ option_name, arg);
+}
+
+void
+parse_string(const char* option_name, const char* arg, const char** retval)
+{
+ if (*arg == '\0')
+ gold_fatal(_("%s: must take a non-empty argument"), option_name);
+ *retval = arg;
+}
+
+void
+parse_optional_string(const char*, const char* arg, const char** retval)
+{
+ *retval = arg;
+}
+
+void
+parse_dirlist(const char*, const char* arg, Dir_list* retval)
+{
+ retval->push_back(Search_directory(arg, false));
+}
+
+void
+parse_set(const char*, const char* arg, String_set* retval)
+{
+ retval->insert(std::string(arg));
+}
+
+void
+parse_choices(const char* option_name, const char* arg, const char** retval,
+ const char* choices[], int num_choices)
+{
+ for (int i = 0; i < num_choices; i++)
+ if (strcmp(choices[i], arg) == 0)
+ {
+ *retval = arg;
+ return;
+ }
+
+ // If we get here, the user did not enter a valid choice, so we die.
+ std::string choices_list;
+ for (int i = 0; i < num_choices; i++)
+ {
+ choices_list += choices[i];
+ if (i != num_choices - 1)
+ choices_list += ", ";
+ }
+ gold_fatal(_("%s: must take one of the following arguments: %s"),
+ option_name, choices_list.c_str());
+}
+
+} // End namespace options.
+
+// Define the handler for "special" options (set via DEFINE_special).
+
+void
+General_options::parse_help(const char*, const char*, Command_line*)
+{
+ options::help();
+ ::exit(EXIT_SUCCESS);
+}
+
+void
+General_options::parse_version(const char* opt, const char*, Command_line*)
+{
+ bool print_short = (opt[0] == '-' && opt[1] == 'v');
+ gold::print_version(print_short);
+ this->printed_version_ = true;
+ if (!print_short)
+ ::exit(EXIT_SUCCESS);
+}
+
+void
+General_options::parse_V(const char*, const char*, Command_line*)
+{
+ gold::print_version(true);
+ this->printed_version_ = true;
+
+ printf(_(" Supported targets:\n"));
+ std::vector<const char*> supported_names;
+ gold::supported_target_names(&supported_names);
+ for (std::vector<const char*>::const_iterator p = supported_names.begin();
+ p != supported_names.end();
+ ++p)
+ printf(" %s\n", *p);
+
+ printf(_(" Supported emulations:\n"));
+ supported_names.clear();
+ gold::supported_emulation_names(&supported_names);
+ for (std::vector<const char*>::const_iterator p = supported_names.begin();
+ p != supported_names.end();
+ ++p)
+ printf(" %s\n", *p);
+}
+
+void
+General_options::parse_defsym(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ cmdline->script_options().define_symbol(arg);
+}
+
+void
+General_options::parse_discard_all(const char*, const char*,
+ Command_line*)
+{
+ this->discard_locals_ = DISCARD_ALL;
+}
+
+void
+General_options::parse_discard_locals(const char*, const char*,
+ Command_line*)
+{
+ this->discard_locals_ = DISCARD_LOCALS;
+}
+
+void
+General_options::parse_discard_none(const char*, const char*,
+ Command_line*)
+{
+ this->discard_locals_ = DISCARD_NONE;
+}
+
+void
+General_options::parse_incremental(const char*, const char*,
+ Command_line*)
+{
+ this->incremental_mode_ = INCREMENTAL_AUTO;
+}
+
+void
+General_options::parse_no_incremental(const char*, const char*,
+ Command_line*)
+{
+ this->incremental_mode_ = INCREMENTAL_OFF;
+}
+
+void
+General_options::parse_incremental_full(const char*, const char*,
+ Command_line*)
+{
+ this->incremental_mode_ = INCREMENTAL_FULL;
+}
+
+void
+General_options::parse_incremental_update(const char*, const char*,
+ Command_line*)
+{
+ this->incremental_mode_ = INCREMENTAL_UPDATE;
+}
+
+void
+General_options::parse_incremental_changed(const char*, const char*,
+ Command_line*)
+{
+ this->implicit_incremental_ = true;
+ this->incremental_disposition_ = INCREMENTAL_CHANGED;
+}
+
+void
+General_options::parse_incremental_unchanged(const char*, const char*,
+ Command_line*)
+{
+ this->implicit_incremental_ = true;
+ this->incremental_disposition_ = INCREMENTAL_UNCHANGED;
+}
+
+void
+General_options::parse_incremental_unknown(const char*, const char*,
+ Command_line*)
+{
+ this->implicit_incremental_ = true;
+ this->incremental_disposition_ = INCREMENTAL_CHECK;
+}
+
+void
+General_options::parse_incremental_startup_unchanged(const char*, const char*,
+ Command_line*)
+{
+ this->implicit_incremental_ = true;
+ this->incremental_startup_disposition_ = INCREMENTAL_UNCHANGED;
+}
+
+void
+General_options::parse_library(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ Input_file_argument::Input_file_type type;
+ const char* name;
+ if (arg[0] == ':')
+ {
+ type = Input_file_argument::INPUT_FILE_TYPE_SEARCHED_FILE;
+ name = arg + 1;
+ }
+ else
+ {
+ type = Input_file_argument::INPUT_FILE_TYPE_LIBRARY;
+ name = arg;
+ }
+ Input_file_argument file(name, type, "", false, *this);
+ cmdline->inputs().add_file(file);
+}
+
+#ifdef ENABLE_PLUGINS
+void
+General_options::parse_plugin(const char*, const char* arg,
+ Command_line*)
+{
+ this->add_plugin(arg);
+}
+
+// Parse --plugin-opt.
+
+void
+General_options::parse_plugin_opt(const char*, const char* arg,
+ Command_line*)
+{
+ this->add_plugin_option(arg);
+}
+#endif // ENABLE_PLUGINS
+
+void
+General_options::parse_R(const char* option, const char* arg,
+ Command_line* cmdline)
+{
+ struct stat s;
+ if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode))
+ this->add_to_rpath(arg);
+ else
+ this->parse_just_symbols(option, arg, cmdline);
+}
+
+void
+General_options::parse_just_symbols(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ Input_file_argument file(arg, Input_file_argument::INPUT_FILE_TYPE_FILE,
+ "", true, *this);
+ cmdline->inputs().add_file(file);
+}
+
+// Handle --section-start.
+
+void
+General_options::parse_section_start(const char*, const char* arg,
+ Command_line*)
+{
+ const char* eq = strchr(arg, '=');
+ if (eq == NULL)
+ {
+ gold_error(_("invalid argument to --section-start; "
+ "must be SECTION=ADDRESS"));
+ return;
+ }
+
+ std::string section_name(arg, eq - arg);
+
+ ++eq;
+ const char* val_start = eq;
+ if (eq[0] == '0' && (eq[1] == 'x' || eq[1] == 'X'))
+ eq += 2;
+ if (*eq == '\0')
+ {
+ gold_error(_("--section-start address missing"));
+ return;
+ }
+ uint64_t addr = 0;
+ hex_init();
+ for (; *eq != '\0'; ++eq)
+ {
+ if (!hex_p(*eq))
+ {
+ gold_error(_("--section-start argument %s is not a valid hex number"),
+ val_start);
+ return;
+ }
+ addr <<= 4;
+ addr += hex_value(*eq);
+ }
+
+ this->section_starts_[section_name] = addr;
+}
+
+// Look up a --section-start value.
+
+bool
+General_options::section_start(const char* secname, uint64_t* paddr) const
+{
+ if (this->section_starts_.empty())
+ return false;
+ std::map<std::string, uint64_t>::const_iterator p =
+ this->section_starts_.find(secname);
+ if (p == this->section_starts_.end())
+ return false;
+ *paddr = p->second;
+ return true;
+}
+
+void
+General_options::parse_static(const char*, const char*, Command_line*)
+{
+ this->set_static(true);
+}
+
+void
+General_options::parse_script(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ if (!read_commandline_script(arg, cmdline))
+ gold::gold_fatal(_("unable to parse script file %s"), arg);
+}
+
+void
+General_options::parse_version_script(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ if (!read_version_script(arg, cmdline))
+ gold::gold_fatal(_("unable to parse version script file %s"), arg);
+}
+
+void
+General_options::parse_dynamic_list(const char*, const char* arg,
+ Command_line* cmdline)
+{
+ if (!read_dynamic_list(arg, cmdline, &this->dynamic_list_))
+ gold::gold_fatal(_("unable to parse dynamic-list script file %s"), arg);
+ this->have_dynamic_list_ = true;
+}
+
+void
+General_options::parse_start_group(const char*, const char*,
+ Command_line* cmdline)
+{
+ cmdline->inputs().start_group();
+}
+
+void
+General_options::parse_end_group(const char*, const char*,
+ Command_line* cmdline)
+{
+ cmdline->inputs().end_group();
+}
+
+void
+General_options::parse_start_lib(const char*, const char*,
+ Command_line* cmdline)
+{
+ cmdline->inputs().start_lib(cmdline->position_dependent_options());
+}
+
+void
+General_options::parse_end_lib(const char*, const char*,
+ Command_line* cmdline)
+{
+ cmdline->inputs().end_lib();
+}
+
+// The function add_excluded_libs() in ld/ldlang.c of GNU ld breaks up a list
+// of names separated by commas or colons and puts them in a linked list.
+// We implement the same parsing of names here but store names in an unordered
+// map to speed up searching of names.
+
+void
+General_options::parse_exclude_libs(const char*, const char* arg,
+ Command_line*)
+{
+ const char* p = arg;
+
+ while (*p != '\0')
+ {
+ size_t length = strcspn(p, ",:");
+ this->excluded_libs_.insert(std::string(p, length));
+ p += (p[length] ? length + 1 : length);
+ }
+}
+
+// The checking logic is based on the function check_excluded_libs() in
+// ld/ldlang.c of GNU ld but our implementation is different because we use
+// an unordered map instead of a linked list, which is what GNU ld uses. GNU
+// ld searches sequentially in the excluded libs list. For a given archive,
+// a match is found if the archive's name matches exactly one of the list
+// entry or if the archive's name is of the form FOO.a and FOO matches exactly
+// one of the list entry. An entry "ALL" in the list is considered as a
+// wild-card and matches any given name.
+
+bool
+General_options::check_excluded_libs(const std::string &name) const
+{
+ Unordered_set<std::string>::const_iterator p;
+
+ // Exit early for the most common case.
+ if (excluded_libs_.empty())
+ return false;
+
+ // If we see "ALL", all archives are excluded from automatic export.
+ p = excluded_libs_.find(std::string("ALL"));
+ if (p != excluded_libs_.end())
+ return true;
+
+ // First strip off any directories in name.
+ const char* basename = lbasename(name.c_str());
+
+ // Try finding an exact match.
+ p = excluded_libs_.find(std::string(basename));
+ if (p != excluded_libs_.end())
+ return true;
+
+ // Try matching NAME without ".a" at the end.
+ size_t length = strlen(basename);
+ if ((length >= 2)
+ && (basename[length - 2] == '.')
+ && (basename[length - 1] == 'a'))
+ {
+ p = excluded_libs_.find(std::string(basename, length - 2));
+ if (p != excluded_libs_.end())
+ return true;
+ }
+
+ return false;
+}
+
+// Recognize input and output target names. The GNU linker accepts
+// these with --format and --oformat. This code is intended to be
+// minimally compatible. In practice for an ELF target this would be
+// the same target as the input files; that name always start with
+// "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex",
+// "binary", "ihex".
+
+General_options::Object_format
+General_options::string_to_object_format(const char* arg)
+{
+ if (strncmp(arg, "elf", 3) == 0 || strcmp(arg, "default") == 0)
+ return gold::General_options::OBJECT_FORMAT_ELF;
+ else if (strcmp(arg, "binary") == 0)
+ return gold::General_options::OBJECT_FORMAT_BINARY;
+ else
+ {
+ gold::gold_error(_("format '%s' not supported; treating as elf "
+ "(supported formats: elf, binary)"),
+ arg);
+ return gold::General_options::OBJECT_FORMAT_ELF;
+ }
+}
+
+const char*
+General_options::object_format_to_string(General_options::Object_format fmt)
+{
+ switch (fmt)
+ {
+ case General_options::OBJECT_FORMAT_ELF:
+ return "elf";
+ case General_options::OBJECT_FORMAT_BINARY:
+ return "binary";
+ default:
+ gold_unreachable();
+ }
+}
+
+void
+General_options::parse_fix_v4bx(const char*, const char*,
+ Command_line*)
+{
+ this->fix_v4bx_ = FIX_V4BX_REPLACE;
+}
+
+void
+General_options::parse_fix_v4bx_interworking(const char*, const char*,
+ Command_line*)
+{
+ this->fix_v4bx_ = FIX_V4BX_INTERWORKING;
+}
+
+void
+General_options::parse_EB(const char*, const char*, Command_line*)
+{
+ this->endianness_ = ENDIANNESS_BIG;
+}
+
+void
+General_options::parse_EL(const char*, const char*, Command_line*)
+{
+ this->endianness_ = ENDIANNESS_LITTLE;
+}
+
+void
+General_options::copy_from_posdep_options(
+ const Position_dependent_options& posdep)
+{
+ this->set_as_needed(posdep.as_needed());
+ this->set_Bdynamic(posdep.Bdynamic());
+ this->set_format(
+ General_options::object_format_to_string(posdep.format_enum()));
+ this->set_whole_archive(posdep.whole_archive());
+ this->set_incremental_disposition(posdep.incremental_disposition());
+}
+
+void
+General_options::parse_push_state(const char*, const char*, Command_line*)
+{
+ Position_dependent_options* posdep = new Position_dependent_options(*this);
+ this->options_stack_.push_back(posdep);
+}
+
+void
+General_options::parse_pop_state(const char*, const char*, Command_line*)
+{
+ if (this->options_stack_.empty())
+ {
+ gold::gold_error(_("unbalanced --push-state/--pop-state"));
+ return;
+ }
+ Position_dependent_options* posdep = this->options_stack_.back();
+ this->options_stack_.pop_back();
+ this->copy_from_posdep_options(*posdep);
+ delete posdep;
+}
+
+} // End namespace gold.
+
+namespace
+{
+
+void
+usage()
+{
+ fprintf(stderr,
+ _("%s: use the --help option for usage information\n"),
+ gold::program_name);
+ ::exit(EXIT_FAILURE);
+}
+
+void
+usage(const char* msg, const char* opt)
+{
+ fprintf(stderr,
+ _("%s: %s: %s\n"),
+ gold::program_name, opt, msg);
+ usage();
+}
+
+// If the default sysroot is relocatable, try relocating it based on
+// the prefix FROM.
+
+static char*
+get_relative_sysroot(const char* from)
+{
+ char* path = make_relative_prefix(gold::program_name, from,
+ TARGET_SYSTEM_ROOT);
+ if (path != NULL)
+ {
+ struct stat s;
+ if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode))
+ return path;
+ free(path);
+ }
+
+ return NULL;
+}
+
+// Return the default sysroot. This is set by the --with-sysroot
+// option to configure. Note we do not free the return value of
+// get_relative_sysroot, which is a small memory leak, but is
+// necessary since we store this pointer directly in General_options.
+
+static const char*
+get_default_sysroot()
+{
+ const char* sysroot = TARGET_SYSTEM_ROOT;
+ if (*sysroot == '\0')
+ return NULL;
+
+ if (TARGET_SYSTEM_ROOT_RELOCATABLE)
+ {
+ char* path = get_relative_sysroot(BINDIR);
+ if (path == NULL)
+ path = get_relative_sysroot(TOOLBINDIR);
+ if (path != NULL)
+ return path;
+ }
+
+ return sysroot;
+}
+
+// Parse a long option. Such options have the form
+// <-|--><option>[=arg]. If "=arg" is not present but the option
+// takes an argument, the next word is taken to the be the argument.
+// If equals_only is set, then only the <option>=<arg> form is
+// accepted, not the <option><space><arg> form. Returns a One_option
+// struct or NULL if argv[i] cannot be parsed as a long option. In
+// the not-NULL case, *arg is set to the option's argument (NULL if
+// the option takes no argument), and *i is advanced past this option.
+// NOTE: it is safe for argv and arg to point to the same place.
+gold::options::One_option*
+parse_long_option(int argc, const char** argv, bool equals_only,
+ const char** arg, int* i)
+{
+ const char* const this_argv = argv[*i];
+
+ const char* equals = strchr(this_argv, '=');
+ const char* option_start = this_argv + strspn(this_argv, "-");
+ std::string option(option_start,
+ equals ? equals - option_start : strlen(option_start));
+
+ gold::options::Option_map::iterator it
+ = gold::options::long_options->find(option);
+ if (it == gold::options::long_options->end())
+ return NULL;
+
+ gold::options::One_option* retval = it->second;
+
+ // If the dash-count doesn't match, we fail.
+ if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>"
+ {
+ if (retval->dashes != gold::options::DASH_Z)
+ return NULL;
+ }
+ else if (this_argv[1] != '-') // one dash
+ {
+ if (retval->dashes != gold::options::ONE_DASH
+ && retval->dashes != gold::options::EXACTLY_ONE_DASH
+ && retval->dashes != gold::options::TWO_DASHES)
+ return NULL;
+ }
+ else // two dashes (or more!)