binutils-gdb/gold/target-select.cc

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// target-select.cc -- select a target for an object file
PR gold/12934 * target-select.cc (Target_selector::Target_selector): Add emulation parameter. Change all callers. (select_target_by_bfd_name): Rename from select_target_by_name. Change all callers. (select_target_by_emulation): New function. (supported_emulation_names): New function. * target-select.h (class Target_selector): Add emulation_ field. Update declarations. (Target_selector::recognize_by_bfd_name): Rename from recognize_by_name. Change all callers. (Target_selector::supported_bfd_names): Rename from supported_names. Change all callers. (Target_selector::recognize_by_emulation): New function. (Target_selector::supported_emulations): New function. (Target_selector::emulation): New function. (Target_selector::do_recognize_by_bfd_name): Rename from do_recognize_by_name. Change all callers. (Target_selector::do_supported_bfd_names): Rename from do_supported_names. Change all callers. (Target_selector::do_recognize_by_emulation): New function. (Target_selector::do_supported_emulations): New function. (select_target_by_bfd_name): Change name in declaration. (select_target_by_emulation): Declare. (supported_emulation_names): Declare. * parameters.cc (parameters_force_valid_target): Try to find target based on emulation from -m option. * options.h (class General_options): Change doc string for -m. * options.cc (help): Print emulations. (General_options::parse_V): Likewise. * freebsd.h (Target_selector_freebsd::Target_selector_freebsd): Add emulation parameter. Change all callers.
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// Copyright 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
// 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.
// 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 this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
#include "gold.h"
#include <cstring>
#include "elfcpp.h"
#include "target-select.h"
namespace
{
// The start of the list of target selectors.
gold::Target_selector* target_selectors;
} // End anonymous namespace.
namespace gold
{
* gold-threads.h (class Once): Define. (class Initialize_lock): Rewrite as child of Once. * gold-threads.cc (class Once_initialize): Define. (once_pointer_control): New static variable. (once_pointer, once_arg): New static variables. (c_run_once): New static function. (Once::Once, Once::run_once, Once::internal_run): New functions. (class Initialize_lock_once): Remove. (initialize_lock_control): Remove. (initialize_lock_pointer): Remove. (initialize_lock_once): Remove. (Initialize_lock::Initialize_lock): Move to gold-threads.h. (Initialize_lock::initialize): Rewrite. (Initialize_lock::do_run_once): New function. * archive.cc (Archive::interpret_header): Only clear name if it is not already empty. * fileread.cc: Include "gold-threads.h" (file_counts_lock): New static variable. (file_counts_initialize_lock): Likewise. (File_read::release): Only increment counts when using --stats. Use a lock around the increment. * parameters.cc (class Set_parameters_target_once): Define. (set_parameters_target_once): New static variable. (Parameters::Parameters): Move here from parameters.h. (Parameters::set_target): Rewrite. (Parameters::set_target_once): New function. (Parameters::clear_target): Move here and rewrite. * parameters.h (class Parameters): Update declarations. Add set_parameters_target_once_ field. (Parameters::Parameters): Move to parameters.cc. (Parameters::clear_target): Likewise. * readsyms.cc (Read_symbols::do_group): Create a Start_group task. (Start_group::~Start_group): New function. (Start_group::is_runnable): New function. (Start_group::locks, Start_group::run): New functions. (Finish_group::run): Change saw_undefined to size_t. * readsyms.h (class Start_group): Define. (class Finish_group): Change saw_undefined_ field to size_t. (Finish_group::Finish_group): Remove saw_undefined and this_blocker parameters. Change all callers. (Finish_group::set_saw_undefined): New function. (Finish_group::set_blocker): New function. * symtab.h (class Symbol_table): Change saw_undefined to return size_t. Change saw_undefined_ field to size_t. * target-select.cc (Set_target_once::do_run_once): New function. (Target_selector::Target_selector): Initialize set_target_once_ field. Don't initialize lock_ and initialize_lock_ fields. (Target_selector::instantiate_target): Rewrite. (Target_selector::set_target): New function. * target-select.h (class Set_target_once): Define. (class Target_selector): Update declarations. Make Set_target_once a friend. Remove lock_ and initialize_lock_ fields. Add set_target_once_ field.
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// Class Set_target_once.
void
Set_target_once::do_run_once(void*)
{
this->target_selector_->set_target();
}
// Construct a Target_selector, which means adding it to the linked
// list. This runs at global constructor time, so we want it to be
// fast.
Target_selector::Target_selector(int machine, int size, bool is_big_endian,
PR gold/12934 * target-select.cc (Target_selector::Target_selector): Add emulation parameter. Change all callers. (select_target_by_bfd_name): Rename from select_target_by_name. Change all callers. (select_target_by_emulation): New function. (supported_emulation_names): New function. * target-select.h (class Target_selector): Add emulation_ field. Update declarations. (Target_selector::recognize_by_bfd_name): Rename from recognize_by_name. Change all callers. (Target_selector::supported_bfd_names): Rename from supported_names. Change all callers. (Target_selector::recognize_by_emulation): New function. (Target_selector::supported_emulations): New function. (Target_selector::emulation): New function. (Target_selector::do_recognize_by_bfd_name): Rename from do_recognize_by_name. Change all callers. (Target_selector::do_supported_bfd_names): Rename from do_supported_names. Change all callers. (Target_selector::do_recognize_by_emulation): New function. (Target_selector::do_supported_emulations): New function. (select_target_by_bfd_name): Change name in declaration. (select_target_by_emulation): Declare. (supported_emulation_names): Declare. * parameters.cc (parameters_force_valid_target): Try to find target based on emulation from -m option. * options.h (class General_options): Change doc string for -m. * options.cc (help): Print emulations. (General_options::parse_V): Likewise. * freebsd.h (Target_selector_freebsd::Target_selector_freebsd): Add emulation parameter. Change all callers.
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const char* bfd_name, const char* emulation)
: machine_(machine), size_(size), is_big_endian_(is_big_endian),
PR gold/12934 * target-select.cc (Target_selector::Target_selector): Add emulation parameter. Change all callers. (select_target_by_bfd_name): Rename from select_target_by_name. Change all callers. (select_target_by_emulation): New function. (supported_emulation_names): New function. * target-select.h (class Target_selector): Add emulation_ field. Update declarations. (Target_selector::recognize_by_bfd_name): Rename from recognize_by_name. Change all callers. (Target_selector::supported_bfd_names): Rename from supported_names. Change all callers. (Target_selector::recognize_by_emulation): New function. (Target_selector::supported_emulations): New function. (Target_selector::emulation): New function. (Target_selector::do_recognize_by_bfd_name): Rename from do_recognize_by_name. Change all callers. (Target_selector::do_supported_bfd_names): Rename from do_supported_names. Change all callers. (Target_selector::do_recognize_by_emulation): New function. (Target_selector::do_supported_emulations): New function. (select_target_by_bfd_name): Change name in declaration. (select_target_by_emulation): Declare. (supported_emulation_names): Declare. * parameters.cc (parameters_force_valid_target): Try to find target based on emulation from -m option. * options.h (class General_options): Change doc string for -m. * options.cc (help): Print emulations. (General_options::parse_V): Likewise. * freebsd.h (Target_selector_freebsd::Target_selector_freebsd): Add emulation parameter. Change all callers.
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bfd_name_(bfd_name), emulation_(emulation), instantiated_target_(NULL),
set_target_once_(this)
{
this->next_ = target_selectors;
target_selectors = this;
}
* gold-threads.h (class Once): Define. (class Initialize_lock): Rewrite as child of Once. * gold-threads.cc (class Once_initialize): Define. (once_pointer_control): New static variable. (once_pointer, once_arg): New static variables. (c_run_once): New static function. (Once::Once, Once::run_once, Once::internal_run): New functions. (class Initialize_lock_once): Remove. (initialize_lock_control): Remove. (initialize_lock_pointer): Remove. (initialize_lock_once): Remove. (Initialize_lock::Initialize_lock): Move to gold-threads.h. (Initialize_lock::initialize): Rewrite. (Initialize_lock::do_run_once): New function. * archive.cc (Archive::interpret_header): Only clear name if it is not already empty. * fileread.cc: Include "gold-threads.h" (file_counts_lock): New static variable. (file_counts_initialize_lock): Likewise. (File_read::release): Only increment counts when using --stats. Use a lock around the increment. * parameters.cc (class Set_parameters_target_once): Define. (set_parameters_target_once): New static variable. (Parameters::Parameters): Move here from parameters.h. (Parameters::set_target): Rewrite. (Parameters::set_target_once): New function. (Parameters::clear_target): Move here and rewrite. * parameters.h (class Parameters): Update declarations. Add set_parameters_target_once_ field. (Parameters::Parameters): Move to parameters.cc. (Parameters::clear_target): Likewise. * readsyms.cc (Read_symbols::do_group): Create a Start_group task. (Start_group::~Start_group): New function. (Start_group::is_runnable): New function. (Start_group::locks, Start_group::run): New functions. (Finish_group::run): Change saw_undefined to size_t. * readsyms.h (class Start_group): Define. (class Finish_group): Change saw_undefined_ field to size_t. (Finish_group::Finish_group): Remove saw_undefined and this_blocker parameters. Change all callers. (Finish_group::set_saw_undefined): New function. (Finish_group::set_blocker): New function. * symtab.h (class Symbol_table): Change saw_undefined to return size_t. Change saw_undefined_ field to size_t. * target-select.cc (Set_target_once::do_run_once): New function. (Target_selector::Target_selector): Initialize set_target_once_ field. Don't initialize lock_ and initialize_lock_ fields. (Target_selector::instantiate_target): Rewrite. (Target_selector::set_target): New function. * target-select.h (class Set_target_once): Define. (class Target_selector): Update declarations. Make Set_target_once a friend. Remove lock_ and initialize_lock_ fields. Add set_target_once_ field.
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// Instantiate the target and return it. Use SET_TARGET_ONCE_ to
// avoid instantiating two instances of the same target.
Target*
Target_selector::instantiate_target()
{
* gold-threads.h (class Once): Define. (class Initialize_lock): Rewrite as child of Once. * gold-threads.cc (class Once_initialize): Define. (once_pointer_control): New static variable. (once_pointer, once_arg): New static variables. (c_run_once): New static function. (Once::Once, Once::run_once, Once::internal_run): New functions. (class Initialize_lock_once): Remove. (initialize_lock_control): Remove. (initialize_lock_pointer): Remove. (initialize_lock_once): Remove. (Initialize_lock::Initialize_lock): Move to gold-threads.h. (Initialize_lock::initialize): Rewrite. (Initialize_lock::do_run_once): New function. * archive.cc (Archive::interpret_header): Only clear name if it is not already empty. * fileread.cc: Include "gold-threads.h" (file_counts_lock): New static variable. (file_counts_initialize_lock): Likewise. (File_read::release): Only increment counts when using --stats. Use a lock around the increment. * parameters.cc (class Set_parameters_target_once): Define. (set_parameters_target_once): New static variable. (Parameters::Parameters): Move here from parameters.h. (Parameters::set_target): Rewrite. (Parameters::set_target_once): New function. (Parameters::clear_target): Move here and rewrite. * parameters.h (class Parameters): Update declarations. Add set_parameters_target_once_ field. (Parameters::Parameters): Move to parameters.cc. (Parameters::clear_target): Likewise. * readsyms.cc (Read_symbols::do_group): Create a Start_group task. (Start_group::~Start_group): New function. (Start_group::is_runnable): New function. (Start_group::locks, Start_group::run): New functions. (Finish_group::run): Change saw_undefined to size_t. * readsyms.h (class Start_group): Define. (class Finish_group): Change saw_undefined_ field to size_t. (Finish_group::Finish_group): Remove saw_undefined and this_blocker parameters. Change all callers. (Finish_group::set_saw_undefined): New function. (Finish_group::set_blocker): New function. * symtab.h (class Symbol_table): Change saw_undefined to return size_t. Change saw_undefined_ field to size_t. * target-select.cc (Set_target_once::do_run_once): New function. (Target_selector::Target_selector): Initialize set_target_once_ field. Don't initialize lock_ and initialize_lock_ fields. (Target_selector::instantiate_target): Rewrite. (Target_selector::set_target): New function. * target-select.h (class Set_target_once): Define. (class Target_selector): Update declarations. Make Set_target_once a friend. Remove lock_ and initialize_lock_ fields. Add set_target_once_ field.
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this->set_target_once_.run_once(NULL);
return this->instantiated_target_;
}
* gold-threads.h (class Once): Define. (class Initialize_lock): Rewrite as child of Once. * gold-threads.cc (class Once_initialize): Define. (once_pointer_control): New static variable. (once_pointer, once_arg): New static variables. (c_run_once): New static function. (Once::Once, Once::run_once, Once::internal_run): New functions. (class Initialize_lock_once): Remove. (initialize_lock_control): Remove. (initialize_lock_pointer): Remove. (initialize_lock_once): Remove. (Initialize_lock::Initialize_lock): Move to gold-threads.h. (Initialize_lock::initialize): Rewrite. (Initialize_lock::do_run_once): New function. * archive.cc (Archive::interpret_header): Only clear name if it is not already empty. * fileread.cc: Include "gold-threads.h" (file_counts_lock): New static variable. (file_counts_initialize_lock): Likewise. (File_read::release): Only increment counts when using --stats. Use a lock around the increment. * parameters.cc (class Set_parameters_target_once): Define. (set_parameters_target_once): New static variable. (Parameters::Parameters): Move here from parameters.h. (Parameters::set_target): Rewrite. (Parameters::set_target_once): New function. (Parameters::clear_target): Move here and rewrite. * parameters.h (class Parameters): Update declarations. Add set_parameters_target_once_ field. (Parameters::Parameters): Move to parameters.cc. (Parameters::clear_target): Likewise. * readsyms.cc (Read_symbols::do_group): Create a Start_group task. (Start_group::~Start_group): New function. (Start_group::is_runnable): New function. (Start_group::locks, Start_group::run): New functions. (Finish_group::run): Change saw_undefined to size_t. * readsyms.h (class Start_group): Define. (class Finish_group): Change saw_undefined_ field to size_t. (Finish_group::Finish_group): Remove saw_undefined and this_blocker parameters. Change all callers. (Finish_group::set_saw_undefined): New function. (Finish_group::set_blocker): New function. * symtab.h (class Symbol_table): Change saw_undefined to return size_t. Change saw_undefined_ field to size_t. * target-select.cc (Set_target_once::do_run_once): New function. (Target_selector::Target_selector): Initialize set_target_once_ field. Don't initialize lock_ and initialize_lock_ fields. (Target_selector::instantiate_target): Rewrite. (Target_selector::set_target): New function. * target-select.h (class Set_target_once): Define. (class Target_selector): Update declarations. Make Set_target_once a friend. Remove lock_ and initialize_lock_ fields. Add set_target_once_ field.
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// Instantiate the target. This is called at most once.
void
Target_selector::set_target()
{
gold_assert(this->instantiated_target_ == NULL);
this->instantiated_target_ = this->do_instantiate_target();
}
// Find the target for an ELF file.
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Target*
select_target(int machine, int size, bool is_big_endian, int osabi,
int abiversion)
{
for (Target_selector* p = target_selectors; p != NULL; p = p->next())
{
int pmach = p->machine();
if ((pmach == machine || pmach == elfcpp::EM_NONE)
&& p->get_size() == size
&& (p->is_big_endian() ? is_big_endian : !is_big_endian))
{
Target* ret = p->recognize(machine, osabi, abiversion);
if (ret != NULL)
return ret;
}
}
return NULL;
}
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// Find a target using a BFD name. This is used to support the
// --oformat option.
Target*
PR gold/12934 * target-select.cc (Target_selector::Target_selector): Add emulation parameter. Change all callers. (select_target_by_bfd_name): Rename from select_target_by_name. Change all callers. (select_target_by_emulation): New function. (supported_emulation_names): New function. * target-select.h (class Target_selector): Add emulation_ field. Update declarations. (Target_selector::recognize_by_bfd_name): Rename from recognize_by_name. Change all callers. (Target_selector::supported_bfd_names): Rename from supported_names. Change all callers. (Target_selector::recognize_by_emulation): New function. (Target_selector::supported_emulations): New function. (Target_selector::emulation): New function. (Target_selector::do_recognize_by_bfd_name): Rename from do_recognize_by_name. Change all callers. (Target_selector::do_supported_bfd_names): Rename from do_supported_names. Change all callers. (Target_selector::do_recognize_by_emulation): New function. (Target_selector::do_supported_emulations): New function. (select_target_by_bfd_name): Change name in declaration. (select_target_by_emulation): Declare. (supported_emulation_names): Declare. * parameters.cc (parameters_force_valid_target): Try to find target based on emulation from -m option. * options.h (class General_options): Change doc string for -m. * options.cc (help): Print emulations. (General_options::parse_V): Likewise. * freebsd.h (Target_selector_freebsd::Target_selector_freebsd): Add emulation parameter. Change all callers.
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select_target_by_bfd_name(const char* name)
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{
for (Target_selector* p = target_selectors; p != NULL; p = p->next())
{
const char* pname = p->bfd_name();
if (pname == NULL || strcmp(pname, name) == 0)
{
PR gold/12934 * target-select.cc (Target_selector::Target_selector): Add emulation parameter. Change all callers. (select_target_by_bfd_name): Rename from select_target_by_name. Change all callers. (select_target_by_emulation): New function. (supported_emulation_names): New function. * target-select.h (class Target_selector): Add emulation_ field. Update declarations. (Target_selector::recognize_by_bfd_name): Rename from recognize_by_name. Change all callers. (Target_selector::supported_bfd_names): Rename from supported_names. Change all callers. (Target_selector::recognize_by_emulation): New function. (Target_selector::supported_emulations): New function. (Target_selector::emulation): New function. (Target_selector::do_recognize_by_bfd_name): Rename from do_recognize_by_name. Change all callers. (Target_selector::do_supported_bfd_names): Rename from do_supported_names. Change all callers. (Target_selector::do_recognize_by_emulation): New function. (Target_selector::do_supported_emulations): New function. (select_target_by_bfd_name): Change name in declaration. (select_target_by_emulation): Declare. (supported_emulation_names): Declare. * parameters.cc (parameters_force_valid_target): Try to find target based on emulation from -m option. * options.h (class General_options): Change doc string for -m. * options.cc (help): Print emulations. (General_options::parse_V): Likewise. * freebsd.h (Target_selector_freebsd::Target_selector_freebsd): Add emulation parameter. Change all callers.
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Target* ret = p->recognize_by_bfd_name(name);
if (ret != NULL)
return ret;
}
}
return NULL;
}
// Find a target using a GNU linker emulation. This is used to
// support the -m option.
Target*
select_target_by_emulation(const char* name)
{
for (Target_selector* p = target_selectors; p != NULL; p = p->next())
{
const char* pname = p->emulation();
if (pname == NULL || strcmp(pname, name) == 0)
{
Target* ret = p->recognize_by_emulation(name);
if (ret != NULL)
return ret;
}
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}
return NULL;
}
// Push all the supported BFD names onto a vector.
void
supported_target_names(std::vector<const char*>* names)
{
for (Target_selector* p = target_selectors; p != NULL; p = p->next())
PR gold/12934 * target-select.cc (Target_selector::Target_selector): Add emulation parameter. Change all callers. (select_target_by_bfd_name): Rename from select_target_by_name. Change all callers. (select_target_by_emulation): New function. (supported_emulation_names): New function. * target-select.h (class Target_selector): Add emulation_ field. Update declarations. (Target_selector::recognize_by_bfd_name): Rename from recognize_by_name. Change all callers. (Target_selector::supported_bfd_names): Rename from supported_names. Change all callers. (Target_selector::recognize_by_emulation): New function. (Target_selector::supported_emulations): New function. (Target_selector::emulation): New function. (Target_selector::do_recognize_by_bfd_name): Rename from do_recognize_by_name. Change all callers. (Target_selector::do_supported_bfd_names): Rename from do_supported_names. Change all callers. (Target_selector::do_recognize_by_emulation): New function. (Target_selector::do_supported_emulations): New function. (select_target_by_bfd_name): Change name in declaration. (select_target_by_emulation): Declare. (supported_emulation_names): Declare. * parameters.cc (parameters_force_valid_target): Try to find target based on emulation from -m option. * options.h (class General_options): Change doc string for -m. * options.cc (help): Print emulations. (General_options::parse_V): Likewise. * freebsd.h (Target_selector_freebsd::Target_selector_freebsd): Add emulation parameter. Change all callers.
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p->supported_bfd_names(names);
}
// Push all the supported emulations onto a vector.
void
supported_emulation_names(std::vector<const char*>* names)
{
for (Target_selector* p = target_selectors; p != NULL; p = p->next())
p->supported_emulations(names);
}
} // End namespace gold.