// options.h -- handle command line options for gold -*- C++ -*-
-// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
#include <string>
#include <vector>
+#include "elfcpp.h"
+#include "script.h"
+
namespace gold
{
class Command_line;
class Input_file_group;
+class Position_dependent_options;
+class Target;
-namespace options {
+namespace options
+{
class Command_line_options;
struct One_option;
+struct One_z_option;
+struct One_debug_option;
} // End namespace gold::options.
// This is the usual constructor.
Search_directory(const char* name, bool put_in_sysroot)
: name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false)
- { gold_assert(!this->name_.empty()); }
+ {
+ if (this->name_.empty())
+ this->name_ = ".";
+ }
// This is called if we have a sysroot. The sysroot is prefixed to
// any entries for which put_in_sysroot_ is true. is_in_sysroot_ is
class General_options
{
public:
+ enum Object_format
+ {
+ // Ordinary ELF.
+ OBJECT_FORMAT_ELF,
+ // Straight binary format.
+ OBJECT_FORMAT_BINARY
+ };
+
General_options();
+ // -e: set entry address.
+ const char*
+ entry() const
+ { return this->entry_; }
+
// -E: export dynamic symbols.
bool
export_dynamic() const
{ return this->export_dynamic_; }
+ // -h: shared library name.
+ const char*
+ soname() const
+ { return this->soname_; }
+
// -I: dynamic linker name.
const char*
dynamic_linker() const
// -O: optimization level (0: don't try to optimize output size).
int
- optimization_level() const
+ optimize() const
{ return this->optimization_level_; }
// -o: Output file name.
output_file_name() const
{ return this->output_file_name_; }
+ // --oformat: Output format.
+ Object_format
+ oformat() const
+ { return this->oformat_; }
+
+ // Return the default target.
+ Target*
+ default_target() const;
+
// -r: Whether we are doing a relocatable link.
bool
- is_relocatable() const
+ relocatable() const
{ return this->is_relocatable_; }
// -s: Strip all symbols.
strip_debug() const
{ return this->strip_ == STRIP_ALL || this->strip_ == STRIP_DEBUG; }
+ // --strip-debug-gdb: strip only debugging information that's not
+ // used by gdb (at least, for gdb versions <= 6.7).
+ bool
+ strip_debug_gdb() const
+ { return this->strip_debug() || this->strip_ == STRIP_DEBUG_UNUSED_BY_GDB; }
+
+ // --allow-shlib-undefined: do not warn about unresolved symbols in
+ // --shared libraries.
+ bool
+ allow_shlib_undefined() const
+ { return this->allow_shlib_undefined_; }
+
// -Bsymbolic: bind defined symbols locally.
bool
- symbolic() const
+ Bsymbolic() const
{ return this->symbolic_; }
+ // --compress-debug-sections: compress .debug_* sections in the
+ // output file using the given compression method. This is useful
+ // when the tools (such as gdb) support compressed sections.
+ bool
+ compress_debug_sections() const
+ { return this->compress_debug_sections_ != NO_COMPRESSION; }
+
+ bool
+ zlib_compress_debug_sections() const
+ { return this->compress_debug_sections_ == ZLIB_COMPRESSION; }
+
+ // --demangle: demangle C++ symbols in our log messages.
+ bool
+ demangle() const
+ { return this->demangle_; }
+
+ // --detect-odr-violations: Whether to search for One Defn Rule violations.
+ bool
+ detect_odr_violations() const
+ { return this->detect_odr_violations_; }
+
// --eh-frame-hdr: Whether to generate an exception frame header.
bool
- create_eh_frame_hdr() const
+ eh_frame_hdr() const
{ return this->create_eh_frame_hdr_; }
// --rpath: The runtime search path.
// --shared: Whether generating a shared object.
bool
- is_shared() const
+ shared() const
{ return this->is_shared_; }
// --static: Whether doing a static link.
sysroot() const
{ return this->sysroot_; }
+ // -Tbss: The address of the BSS segment
+ uint64_t
+ Tbss() const
+ { return this->bss_segment_address_; }
+
+ // Whether -Tbss was used.
+ bool
+ user_set_Tbss() const
+ { return this->bss_segment_address_ != -1U; }
+
+ // -Tdata: The address of the data segment
+ uint64_t
+ Tdata() const
+ { return this->data_segment_address_; }
+
+ // Whether -Tdata was used.
+ bool
+ user_set_Tdata() const
+ { return this->data_segment_address_ != -1U; }
+
// -Ttext: The address of the .text section
uint64_t
- text_segment_address() const
+ Ttext() const
{ return this->text_segment_address_; }
// Whether -Ttext was used.
bool
- user_set_text_segment_address() const
+ user_set_Ttext() const
{ return this->text_segment_address_ != -1U; }
// --threads: Whether to use threads.
thread_count_final() const
{ return this->thread_count_final_; }
+ // -z execstack, -z noexecstack
+ bool
+ is_execstack_set() const
+ { return this->execstack_ != EXECSTACK_FROM_INPUT; }
+
+ bool
+ is_stack_executable() const
+ { return this->execstack_ == EXECSTACK_YES; }
+
+ // -z max-page-size
+ uint64_t
+ max_page_size() const
+ { return this->max_page_size_; }
+
+ // -z common-page-size
+ uint64_t
+ common_page_size() const
+ { return this->common_page_size_; }
+
+ // --debug
+ unsigned int
+ debug() const
+ { return this->debug_; }
+
private:
// Don't copy this structure.
General_options(const General_options&);
// Strip all symbols.
STRIP_ALL,
// Strip debugging information.
- STRIP_DEBUG
+ STRIP_DEBUG,
+ // Strip debugging information that's not used by gdb (at least <= 6.7)
+ STRIP_DEBUG_UNUSED_BY_GDB
+ };
+
+ // Whether to mark the stack as executable.
+ enum Execstack
+ {
+ // Not set on command line.
+ EXECSTACK_FROM_INPUT,
+ // Mark the stack as executable.
+ EXECSTACK_YES,
+ // Mark the stack as not executable.
+ EXECSTACK_NO
+ };
+
+ // What compression method to use
+ enum CompressionMethod
+ {
+ NO_COMPRESSION,
+ ZLIB_COMPRESSION,
};
void
- set_export_dynamic()
- { this->export_dynamic_ = true; }
+ set_entry(const char* arg)
+ { this->entry_ = arg; }
+
+ void
+ set_export_dynamic(bool value)
+ { this->export_dynamic_ = value; }
+
+ void
+ set_soname(const char* arg)
+ { this->soname_ = arg; }
void
set_dynamic_linker(const char* arg)
{ this->search_path_.push_back(Search_directory(arg, true)); }
void
- set_optimization_level(const char* arg)
- { this->optimization_level_ = atoi(arg); }
+ set_optimize(const char* arg)
+ {
+ char* endptr;
+ this->optimization_level_ = strtol(arg, &endptr, 0);
+ if (*endptr != '\0' || this->optimization_level_ < 0)
+ gold_fatal(_("invalid optimization level: %s"), arg);
+ }
void
- set_output_file_name(const char* arg)
+ set_output(const char* arg)
{ this->output_file_name_ = arg; }
void
- set_relocatable()
- { this->is_relocatable_ = true; }
+ set_oformat(const char*);
void
- set_strip_all()
+ set_relocatable(bool value)
+ { this->is_relocatable_ = value; }
+
+ void
+ set_strip_all(bool)
{ this->strip_ = STRIP_ALL; }
// Note: normalize_options() depends on the fact that this turns off
// STRIP_ALL if it were already set.
void
- set_strip_debug()
+ set_strip_debug(bool)
{ this->strip_ = STRIP_DEBUG; }
void
- set_symbolic()
- { this->symbolic_ = true; }
+ set_strip_debug_gdb(bool)
+ { this->strip_ = STRIP_DEBUG_UNUSED_BY_GDB; }
+
+ void
+ set_allow_shlib_undefined(bool value)
+ { this->allow_shlib_undefined_ = value; }
void
- set_create_eh_frame_hdr()
- { this->create_eh_frame_hdr_ = true; }
+ set_no_allow_shlib_undefined(bool value)
+ { this->set_allow_shlib_undefined(!value); }
+
+ void
+ set_Bsymbolic(bool value)
+ { this->symbolic_ = value; }
+
+ void set_compress_debug_sections(const char* arg)
+ {
+ if (strcmp(arg, "none") == 0)
+ this->compress_debug_sections_ = NO_COMPRESSION;
+#ifdef HAVE_ZLIB_H
+ else if (strcmp(arg, "zlib") == 0)
+ this->compress_debug_sections_ = ZLIB_COMPRESSION;
+#endif
+ else
+ gold_fatal(_("unsupported argument to --compress-debug-sections: %s"),
+ arg);
+ }
+
+ void
+ add_to_defsym(const char* arg);
+
+ void
+ set_demangle(bool value)
+ { this->demangle_ = value; }
+
+ void
+ set_no_demangle(bool value)
+ { this->set_demangle(!value); }
+
+ void
+ set_detect_odr_violations(bool value)
+ { this->detect_odr_violations_ = value; }
+
+ void
+ set_eh_frame_hdr(bool value)
+ { this->create_eh_frame_hdr_ = value; }
void
add_to_rpath(const char* arg)
{ this->rpath_link_.push_back(Search_directory(arg, false)); }
void
- set_shared()
- { this->is_shared_ = true; }
+ set_shared(bool value)
+ { this->is_shared_ = value; }
void
- set_static()
- { this->is_static_ = true; }
+ set_static(bool value)
+ { this->is_static_ = value; }
void
- set_stats()
- { this->print_stats_ = true; }
+ set_stats(bool value)
+ { this->print_stats_ = value; }
void
set_sysroot(const char* arg)
{ this->sysroot_ = arg; }
void
- set_text_segment_address(const char* arg)
+ set_segment_address(const char* name, const char* arg, uint64_t* val)
{
char* endptr;
- this->text_segment_address_ = strtoull(arg, &endptr, 0);
- if (*endptr != '\0'
- || this->text_segment_address_ == -1U)
- {
- fprintf(stderr, _("%s: invalid argument to -Ttext: %s\n"),
- program_name, arg);
- ::exit(1);
- }
+ *val = strtoull(arg, &endptr, 0);
+ if (*endptr != '\0' || *val == -1U)
+ gold_fatal(_("invalid argument to %s: %s"), name, arg);
}
+ void
+ set_Tbss(const char* arg)
+ { this->set_segment_address("-Tbss", arg, &this->bss_segment_address_); }
+
+ void
+ set_Tdata(const char* arg)
+ { this->set_segment_address("-Tdata", arg, &this->data_segment_address_); }
+
+ void
+ set_Ttext(const char* arg)
+ { this->set_segment_address("-Ttext", arg, &this->text_segment_address_); }
+
int
parse_thread_count(const char* arg)
{
char* endptr;
- int count = strtol(arg, &endptr, 0);
+ const int count = strtol(arg, &endptr, 0);
if (*endptr != '\0' || count < 0)
- {
- fprintf(stderr, _("%s: invalid thread count: %s\n"),
- program_name, arg);
- ::exit(1);
- }
+ gold_fatal(_("invalid thread count: %s"), arg);
return count;
}
void
- set_threads()
- { this->threads_ = true; }
+ set_threads(bool value)
+ {
+#ifndef ENABLE_THREADS
+ if (value)
+ gold_fatal(_("--threads not supported"));
+#endif
+ this->threads_ = value;
+ }
void
- clear_threads()
- { this->threads_ = false; }
+ set_no_threads(bool value)
+ { this->set_threads(!value); }
void
set_thread_count(const char* arg)
void
set_thread_count_middle(const char* arg)
- { this->thread_count_initial_ = this->parse_thread_count(arg); }
+ { this->thread_count_middle_ = this->parse_thread_count(arg); }
void
set_thread_count_final(const char* arg)
- { this->thread_count_initial_ = this->parse_thread_count(arg); }
+ { this->thread_count_final_ = this->parse_thread_count(arg); }
void
ignore(const char*)
{ }
+ void
+ set_execstack(bool)
+ { this->execstack_ = EXECSTACK_YES; }
+
+ void
+ set_noexecstack(bool)
+ { this->execstack_ = EXECSTACK_NO; }
+
+ void
+ set_max_page_size(const char* arg)
+ {
+ char* endptr;
+ this->max_page_size_ = strtoull(arg, &endptr, 0);
+ if (*endptr != '\0' || this->max_page_size_ == 0)
+ gold_fatal(_("invalid max-page-size: %s"), arg);
+ }
+
+ void
+ set_common_page_size(const char* arg)
+ {
+ char* endptr;
+ this->common_page_size_ = strtoull(arg, &endptr, 0);
+ if (*endptr != '\0' || this->common_page_size_ == 0)
+ gold_fatal(_("invalid common-page-size: %s"), arg);
+ }
+
+ void
+ set_debug(unsigned int flags)
+ { this->debug_ = flags; }
+
+ // Handle the -z option.
+ void
+ handle_z_option(const char*);
+
+ // Handle the --debug option.
+ void
+ handle_debug_option(const char*);
+
// Apply any sysroot to the directory lists.
void
add_sysroot();
+ const char* entry_;
bool export_dynamic_;
+ const char* soname_;
const char* dynamic_linker_;
Dir_list search_path_;
int optimization_level_;
const char* output_file_name_;
+ Object_format oformat_;
+ const char* oformat_string_;
bool is_relocatable_;
Strip strip_;
+ bool allow_shlib_undefined_;
bool symbolic_;
+ CompressionMethod compress_debug_sections_;
+ bool demangle_;
+ bool detect_odr_violations_;
bool create_eh_frame_hdr_;
Dir_list rpath_;
Dir_list rpath_link_;
bool is_static_;
bool print_stats_;
std::string sysroot_;
+ uint64_t bss_segment_address_;
+ uint64_t data_segment_address_;
uint64_t text_segment_address_;
bool threads_;
int thread_count_initial_;
int thread_count_middle_;
int thread_count_final_;
+ Execstack execstack_;
+ uint64_t max_page_size_;
+ uint64_t common_page_size_;
+ unsigned int debug_;
};
// The current state of the position dependent options.
class Position_dependent_options
{
public:
+ typedef General_options::Object_format Object_format;
+
Position_dependent_options();
// -Bdynamic/-Bstatic: Whether we are searching for a static archive
// -rather than a shared object.
bool
- do_static_search() const
+ Bstatic() const
{ return this->do_static_search_; }
// --as-needed: Whether to add a DT_NEEDED argument only if the
// --whole-archive: Whether to include the entire contents of an
// --archive.
bool
- include_whole_archive() const
+ whole_archive() const
{ return this->include_whole_archive_; }
+ // --format: The format of the input file.
+ Object_format
+ format() const
+ { return this->input_format_; }
+
void
- set_static_search()
- { this->do_static_search_ = true; }
+ set_Bstatic(bool value)
+ { this->do_static_search_ = value; }
void
- set_dynamic_search()
- { this->do_static_search_ = false; }
+ set_Bdynamic(bool value)
+ { this->set_Bstatic(!value); }
void
- set_as_needed()
- { this->as_needed_ = true; }
+ set_as_needed(bool value)
+ { this->as_needed_ = value; }
void
- clear_as_needed()
- { this->as_needed_ = false; }
+ set_no_as_needed(bool value)
+ { this->set_as_needed(!value); }
void
- set_whole_archive()
- { this->include_whole_archive_ = true; }
+ set_whole_archive(bool value)
+ { this->include_whole_archive_ = value; }
void
- clear_whole_archive()
- { this->include_whole_archive_ = false; }
+ set_no_whole_archive(bool value)
+ { this->set_whole_archive(!value); }
+
+ void
+ set_format(const char*);
private:
bool do_static_search_;
bool as_needed_;
bool include_whole_archive_;
+ Object_format input_format_;
};
// A single file or library argument from the command line.
// extra_search_path: an extra directory to look for the file, prior
// to checking the normal library search path. If this is "",
// then no extra directory is added.
+ // just_symbols: whether this file only defines symbols.
// options: The position dependent options at this point in the
// command line, such as --whole-archive.
Input_file_argument()
- : name_(), is_lib_(false), extra_search_path_(""), options_()
+ : name_(), is_lib_(false), extra_search_path_(""), just_symbols_(false),
+ options_()
{ }
Input_file_argument(const char* name, bool is_lib,
const char* extra_search_path,
+ bool just_symbols,
const Position_dependent_options& options)
: name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path),
- options_(options)
+ just_symbols_(just_symbols), options_(options)
{ }
const char*
: this->extra_search_path_.c_str());
}
+ // Return whether we should only read symbols from this file.
+ bool
+ just_symbols() const
+ { return this->just_symbols_; }
+
// Return whether this file may require a search using the -L
// options.
bool
std::string name_;
bool is_lib_;
std::string extra_search_path_;
+ bool just_symbols_;
Position_dependent_options options_;
};
void
process(int argc, char** argv);
+ // Process one command-line option. This takes the index of argv to
+ // process, and returns the index for the next option.
+ int
+ process_one_option(int argc, char** argv, int i, bool* no_more_options);
+
// Handle a -l option.
int
- process_l_option(int, char**, char*);
+ process_l_option(int, char**, char*, bool);
+
+ // Handle a -R option when it means --rpath.
+ void
+ add_to_rpath(const char* arg)
+ { this->options_.add_to_rpath(arg); }
+
+ // Add a file for which we just read the symbols.
+ void
+ add_just_symbols_file(const char* arg)
+ {
+ this->inputs_.add_file(Input_file_argument(arg, false, "", true,
+ this->position_options_));
+ }
// Handle a --start-group option.
void
void
end_group(const char* arg);
+ // Get an option argument--a helper function for special processing.
+ const char*
+ get_special_argument(const char* longname, int argc, char** argv,
+ const char* arg, bool long_option,
+ int *pret);
+
// Get the general options.
const General_options&
options() const
{ return this->options_; }
+ // Get the position dependent options.
+ const Position_dependent_options&
+ position_dependent_options() const
+ { return this->position_options_; }
+
+ // Get the linker-script options.
+ Script_options&
+ script_options()
+ { return this->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
number_of_input_files() const
General_options options_;
Position_dependent_options position_options_;
+ Script_options script_options_;
Input_arguments inputs_;
};
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