From a5dc07065554d074ae0452b388cd9c80b2bc6504 Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Tue, 26 Feb 2008 22:48:08 +0000 Subject: From Craig Silverstein: rework handling of Script_options. --- gold/dynobj.cc | 8 ++++---- gold/dynobj.h | 5 ++--- gold/layout.cc | 5 +++-- gold/main.cc | 12 ++++-------- gold/options.cc | 39 +++++++++++++++++++++----------------- gold/options.h | 40 +++++++++++++-------------------------- gold/script.cc | 13 +++++++++---- gold/script.h | 14 ++++---------- gold/testsuite/binary_unittest.cc | 3 +-- 9 files changed, 62 insertions(+), 77 deletions(-) (limited to 'gold') diff --git a/gold/dynobj.cc b/gold/dynobj.cc index 780e0c9..a33707b 100644 --- a/gold/dynobj.cc +++ b/gold/dynobj.cc @@ -27,7 +27,6 @@ #include "elfcpp.h" #include "parameters.h" -#include "options.h" #include "script.h" #include "symtab.h" #include "dynobj.h" @@ -1229,9 +1228,10 @@ Verneed::write(const Stringpool* dynpool, bool is_last, // Versions methods. -Versions::Versions(const General_options& options, Stringpool* dynpool) +Versions::Versions(const Version_script_info& version_script, + Stringpool* dynpool) : defs_(), needs_(), version_table_(), - is_finalized_(false), version_script_(options.version_script()) + is_finalized_(false), version_script_(version_script) { // We always need a base version, so define that first. Nothing // explicitly declares itself as part of base, so it doesn't need to @@ -1260,7 +1260,7 @@ Versions::Versions(const General_options& options, Stringpool* dynpool) true, &version_key); Verdef* const vd = new Verdef( version, - options.version_script().get_dependencies(version), + this->version_script_.get_dependencies(version), false, false, false); this->defs_.push_back(vd); Key key(version_key, 0); diff --git a/gold/dynobj.h b/gold/dynobj.h index d61df16..cdfa9ce 100644 --- a/gold/dynobj.h +++ b/gold/dynobj.h @@ -31,7 +31,6 @@ namespace gold { -class General_options; class Version_script_info; // A dynamic object (ET_DYN). This is an abstract base class itself. @@ -476,7 +475,7 @@ class Verneed class Versions { public: - Versions(const General_options&, Stringpool*); + Versions(const Version_script_info&, Stringpool*); ~Versions(); @@ -531,7 +530,7 @@ class Versions const Version_script_info& version_script() const { return this->version_script_; } - + private: Versions(const Versions&); Versions& operator=(const Versions&); diff --git a/gold/layout.cc b/gold/layout.cc index 98cafc5..6685156 100644 --- a/gold/layout.cc +++ b/gold/layout.cc @@ -925,7 +925,8 @@ Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab, Output_section* dynstr; std::vector dynamic_symbols; unsigned int local_dynamic_count; - Versions versions(this->options_, &this->dynpool_); + Versions versions(*this->script_options()->version_script_info(), + &this->dynpool_); this->create_dynamic_symtab(input_objects, symtab, &dynstr, &local_dynamic_count, &dynamic_symbols, &versions); @@ -980,7 +981,7 @@ Layout::finalize(const Input_objects* input_objects, Symbol_table* symtab, // Lay out the file header. Output_file_header* file_header; file_header = new Output_file_header(target, symtab, segment_headers, - this->script_options_->entry()); + this->options_.entry()); if (load_seg != NULL) load_seg->add_initial_output_data(file_header); diff --git a/gold/main.cc b/gold/main.cc index 6e35658..678bd03 100644 --- a/gold/main.cc +++ b/gold/main.cc @@ -147,12 +147,8 @@ main(int argc, char** argv) // errors object. initialize_parameters(&errors); - // Options which may be set by the command line or by linker - // scripts. - Script_options script_options; - // Handle the command line options. - Command_line command_line(&script_options); + Command_line command_line; command_line.process(argc - 1, argv + 1); long start_time = 0; @@ -174,7 +170,7 @@ main(int argc, char** argv) // permit some linker optimizations. Perhaps we need yet another // option to control this. FIXME. if (parameters->output_is_object()) - command_line.script_options()->version_script_info()->clear(); + command_line.script_options().version_script_info()->clear(); // The work queue. Workqueue workqueue(command_line.options()); @@ -187,10 +183,10 @@ main(int argc, char** argv) // this is off, it means at worst we don't quite optimize hashtable // resizing as well as we could have (perhap using more memory). Symbol_table symtab(command_line.number_of_input_files() * 1024, - command_line.options().version_script()); + command_line.version_script()); // The layout object. - Layout layout(command_line.options(), &script_options); + Layout layout(command_line.options(), &command_line.script_options()); // Get the search path from the -L options. Dirsearch search_path; diff --git a/gold/options.cc b/gold/options.cc index 8b607af..2dbfad8 100644 --- a/gold/options.cc +++ b/gold/options.cc @@ -169,6 +169,19 @@ string_to_object_format(const char* arg) } } +// Handle the special -defsym option, which defines a symbol. + +int +add_to_defsym(int argc, char** argv, char* arg, bool long_option, + gold::Command_line* cmdline) +{ + int ret; + const char* val = cmdline->get_special_argument("defsym", argc, argv, arg, + long_option, &ret); + cmdline->script_options().define_symbol(val); + return ret; +} + // Handle the special -l option, which adds an input file. int @@ -476,9 +489,9 @@ options::Command_line_options::options[] = N_("--compress-debug-sections=[none" ZLIB_STR "]"), TWO_DASHES, &General_options::set_compress_debug_sections), - GENERAL_ARG('\0', "defsym", N_("Define a symbol"), - N_("--defsym SYMBOL=EXPRESSION"), TWO_DASHES, - &General_options::add_to_defsym), + SPECIAL('\0', "defsym", N_("Define a symbol"), + N_("--defsym SYMBOL=EXPRESSION"), TWO_DASHES, + &add_to_defsym), GENERAL_NOARG('\0', "demangle", N_("Demangle C++ symbols in log messages"), NULL, TWO_DASHES, &General_options::set_demangle), GENERAL_NOARG('\0', "no-demangle", @@ -649,8 +662,9 @@ const int options::Command_line_options::debug_options_size = // The default values for the general options. -General_options::General_options(Script_options* script_options) - : export_dynamic_(false), +General_options::General_options() + : entry_(NULL), + export_dynamic_(false), soname_(NULL), dynamic_linker_(NULL), search_path_(), @@ -681,8 +695,7 @@ General_options::General_options(Script_options* script_options) execstack_(EXECSTACK_FROM_INPUT), max_page_size_(0), common_page_size_(0), - debug_(0), - script_options_(script_options) + debug_(0) { // We initialize demangle_ based on the environment variable // COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the @@ -692,14 +705,6 @@ General_options::General_options(Script_options* script_options) this->demangle_ = getenv("COLLECT_NO_DEMANGLE") == NULL; } -// Handle the --defsym option. - -void -General_options::add_to_defsym(const char* arg) -{ - this->script_options_->define_symbol(arg); -} - // Handle the --oformat option. void @@ -920,8 +925,8 @@ Input_arguments::end_group() // Command_line options. -Command_line::Command_line(Script_options* script_options) - : options_(script_options), position_options_(), inputs_() +Command_line::Command_line() + : options_(), position_options_(), script_options_(), inputs_() { } diff --git a/gold/options.h b/gold/options.h index d7dc06c..14e1629 100644 --- a/gold/options.h +++ b/gold/options.h @@ -119,12 +119,12 @@ class General_options OBJECT_FORMAT_BINARY }; - General_options(Script_options*); + General_options(); // -e: set entry address. const char* entry() const - { return this->script_options_->entry(); } + { return this->entry_; } // -E: export dynamic symbols. bool @@ -255,11 +255,6 @@ class General_options sysroot() const { return this->sysroot_; } - // --version-script: The version script to apply if --shared is true. - const Version_script_info& - version_script() const - { return *this->script_options_->version_script_info(); } - // -Tbss: The address of the BSS segment uint64_t Tbss() const @@ -334,15 +329,6 @@ class General_options debug() const { return this->debug_; } - // Return the options which may be set from a linker script. - Script_options* - script_options() - { return this->script_options_; } - - const Script_options* - script_options() const - { return this->script_options_; } - private: // Don't copy this structure. General_options(const General_options&); @@ -384,7 +370,7 @@ class General_options void set_entry(const char* arg) - { this->script_options_->set_entry(arg, strlen(arg)); } + { this->entry_ = arg; } void set_export_dynamic(bool value) @@ -620,6 +606,7 @@ class General_options void add_sysroot(); + const char* entry_; bool export_dynamic_; const char* soname_; const char* dynamic_linker_; @@ -653,9 +640,6 @@ class General_options uint64_t max_page_size_; uint64_t common_page_size_; unsigned int debug_; - // Some options can also be set from linker scripts. Those are - // stored here. - Script_options* script_options_; }; // The current state of the position dependent options. @@ -940,7 +924,7 @@ class Command_line public: typedef Input_arguments::const_iterator const_iterator; - Command_line(Script_options*); + Command_line(); // Process the command line options. This will exit with an // appropriate error message if an unrecognized option is seen. @@ -993,14 +977,15 @@ class Command_line position_dependent_options() const { return this->position_options_; } - // Get the options which may be set from a linker script. - Script_options* + // Get the linker-script options. + Script_options& script_options() - { return this->options_.script_options(); } + { return this->script_options_; } - const Script_options* - script_options() const - { return this->options_.script_options(); } + // Get the version-script options: a convenience routine. + const Version_script_info& + version_script() const + { return *this->script_options_.version_script_info(); } // The number of input files. int @@ -1044,6 +1029,7 @@ class Command_line General_options options_; Position_dependent_options position_options_; + Script_options script_options_; Input_arguments inputs_; }; diff --git a/gold/script.cc b/gold/script.cc index faa1cda..c7b26ef 100644 --- a/gold/script.cc +++ b/gold/script.cc @@ -1437,7 +1437,7 @@ read_script_file(const char* filename, Command_line* cmdline, false, input_file.is_in_sysroot(), cmdline, - cmdline->script_options(), + &cmdline->script_options(), &lex); if (yyparse(&closure) != 0) { @@ -2111,8 +2111,11 @@ script_end_as_needed(void* closurev) extern "C" void script_set_entry(void* closurev, const char* entry, size_t length) { - Parser_closure* closure = static_cast(closurev); - closure->script_options()->set_entry(entry, length); + // We'll parse this exactly the same as --entry=ENTRY on the commandline + // TODO(csilvers): FIXME -- call set_entry directly. + std::string arg("entry="); + arg.append(entry, length); + script_parse_option(closurev, arg.c_str(), arg.size()); } // Called by the bison parser to define a symbol. @@ -2161,7 +2164,9 @@ script_parse_option(void* closurev, const char* option, size_t length) gold_assert(mutable_option != NULL); closure->command_line()->process_one_option(1, &mutable_option, 0, &past_a_double_dash_option); - free(mutable_option); + // The General_options class will quite possibly store a pointer + // into mutable_option, so we can't free it. In cases the class + // does not store such a pointer, this is a memory leak. Alas. :( } } diff --git a/gold/script.h b/gold/script.h index 64d7fd6..b212227 100644 --- a/gold/script.h +++ b/gold/script.h @@ -294,16 +294,6 @@ class Script_options public: Script_options(); - // The entry address. - const char* - entry() const - { return this->entry_.empty() ? NULL : this->entry_.c_str(); } - - // Set the entry address. - void - set_entry(const char* entry, size_t length) - { this->entry_.assign(entry, length); } - // Add a symbol to be defined. void add_symbol_assignment(const char* name, size_t length, Expression* value, @@ -331,6 +321,10 @@ class Script_options version_script_info() { return &this->version_script_info_; } + const Version_script_info* + version_script_info() const + { return &this->version_script_info_; } + // A SECTIONS clause parsed from a linker script. Everything else // has a pointer to this object. Script_sections* diff --git a/gold/testsuite/binary_unittest.cc b/gold/testsuite/binary_unittest.cc index ea2535b..6a3956a 100644 --- a/gold/testsuite/binary_unittest.cc +++ b/gold/testsuite/binary_unittest.cc @@ -113,8 +113,7 @@ Binary_test(Test_report*) Errors errors(gold::program_name); initialize_parameters(&errors); - Script_options script_options; - General_options options(&script_options); + General_options options; set_parameters_from_options(&options); int fail = 0; -- cgit v1.1