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// parameters.h -- general parameters for a link using gold -*- C++ -*-
// Copyright 2006, 2007 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.
#ifndef GOLD_PARAMETERS_H
#define GOLD_PARAMETERS_H
namespace gold
{
class General_options;
// Here we define the Parameters class which simply holds simple
// general parameters which apply to the entire link. We use a global
// variable for this. This is in contrast to the General_options
// class, which holds the complete state of position independent
// command line options. The hope is that Parameters will stay fairly
// simple, so that if this turns into a library it will be clear how
// these parameters should be set.
class Parameters
{
public:
Parameters(const General_options*);
// Whether we are generating a regular executable.
bool
output_is_executable() const
{ return this->output_file_type_ == OUTPUT_EXECUTABLE; }
// Whether we are generating a shared library.
bool
output_is_shared() const
{ return this->output_file_type_ == OUTPUT_SHARED; }
// Whether we are generating an object file.
bool
output_is_object() const
{ return this->output_file_type_ == OUTPUT_OBJECT; }
// The target system root directory. This is NULL if there isn't
// one.
const std::string&
sysroot() const
{ return this->sysroot_; }
// Whether to strip all symbols.
bool
strip_all() const
{ return this->strip_ == STRIP_ALL; }
// Whether to strip debugging information.
bool
strip_debug() const
{ return this->strip_ == STRIP_ALL || this->strip_ == STRIP_DEBUG; }
// Whether we are doing a static link--a link in which none of the
// input files are shared libraries. This is only known after we
// have seen all the input files.
bool
doing_static_link() const
{
gold_assert(this->is_doing_static_link_valid_);
return this->doing_static_link_;
}
// The size of the output file we are generating. This should
// return 32 or 64.
int
get_size() const
{
gold_assert(this->is_size_and_endian_valid_);
return this->size_;
}
// Whether the output is big endian.
bool
is_big_endian() const
{
gold_assert(this->is_size_and_endian_valid_);
return this->is_big_endian_;
}
// The general linker optimization level.
int
optimization_level() const
{ return this->optimization_level_; }
// Set whether we are doing a static link.
void
set_doing_static_link(bool doing_static_link);
// Set the size and endianness.
void
set_size_and_endianness(int size, bool is_big_endian);
private:
// The types of output files.
enum Output_file_type
{
// Generating executable.
OUTPUT_EXECUTABLE,
// Generating shared library.
OUTPUT_SHARED,
// Generating object file.
OUTPUT_OBJECT
};
// Which symbols to strip.
enum Strip
{
// Don't strip any symbols.
STRIP_NONE,
// Strip all symbols.
STRIP_ALL,
// Strip debugging information.
STRIP_DEBUG
};
// The type of the output file.
Output_file_type output_file_type_;
// The target system root directory.
std::string sysroot_;
// Which symbols to strip.
Strip strip_;
// Whether the doing_static_link_ field is valid.
bool is_doing_static_link_valid_;
// Whether we are doing a static link.
bool doing_static_link_;
// Whether the size_ and is_big_endian_ fields are valid.
bool is_size_and_endian_valid_;
// The size of the output file--32 or 64.
int size_;
// Whether the output file is big endian.
bool is_big_endian_;
// The optimization level.
int optimization_level_;
};
// This is a global variable.
extern const Parameters* parameters;
// Initialize the global variable.
extern void initialize_parameters(const General_options*);
// Set the size and endianness of the global parameters variable.
extern void set_parameters_size_and_endianness(int size, bool is_big_endian);
// Set whether we are doing a static link.
extern void set_parameters_doing_static_link(bool doing_static_link);
} // End namespace gold.
#endif // !defined(GOLD_PARAMETERS_H)
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