X-Git-Url: https://oss.titaniummirror.com/gitweb?p=msp430-binutils.git;a=blobdiff_plain;f=gold%2Fparameters.h;fp=gold%2Fparameters.h;h=88d8a870323cff9727cac299d7d5ee1476143472;hp=0000000000000000000000000000000000000000;hb=88750007d7869f178f0ba528f41efd3b74c424cf;hpb=6df9443a374e2b81278c61b8afc0a1eef7db280b diff --git a/gold/parameters.h b/gold/parameters.h new file mode 100644 index 0000000..88d8a87 --- /dev/null +++ b/gold/parameters.h @@ -0,0 +1,199 @@ +// parameters.h -- general parameters for a link using gold -*- C++ -*- + +// Copyright 2006, 2007, 2008 Free Software Foundation, Inc. +// Written by Ian Lance Taylor . + +// 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; +class Errors; +class Target; +template +class Sized_target; + +// 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. The parameters class holds three types of data: +// 1) An Errors struct. Any part of the code that wants to log an +// error can use parameters->errors(). +// 2) A const General_options. These are the options as read on +// the commandline. +// 3) Target information, such as size and endian-ness. This is +// available as soon as we've decided on the Target (after +// parsing the first .o file). +// 4) Whether we're doing a static link or not. This is set +// after all inputs have been read and we know if any is a +// dynamic library. + +class Parameters +{ + public: + Parameters() + : errors_(NULL), options_(NULL), target_(NULL), + doing_static_link_valid_(false), doing_static_link_(false), + debug_(0) + { } + + // These should be called as soon as they are known. + void + set_errors(Errors* errors); + + void + set_options(const General_options* options); + + void + set_target(Target* target); + + void + set_doing_static_link(bool doing_static_link); + + // Return the error object. + Errors* + errors() const + { return this->errors_; } + + // Whether the options are valid. This should not normally be + // called, but it is needed by gold_exit. + bool + options_valid() const + { return this->options_ != NULL; } + + // Return the options object. + const General_options& + options() const + { + gold_assert(this->options_valid()); + return *this->options_; + } + + // Return whether the target field has been set. + bool + target_valid() const + { return this->target_ != NULL; } + + // The target of the output file we are generating. + const Target& + target() const + { + gold_assert(this->target_valid()); + return *this->target_; + } + + // The Sized_target of the output file. The caller must request the + // right size and endianness. + template + Sized_target* + sized_target() const + { + gold_assert(this->target_valid()); + return static_cast*>(this->target_); + } + + // Clear the target, for testing. + void + clear_target() + { this->target_ = NULL; } + + // Return true if TARGET is compatible with the current target. + bool + is_compatible_target(const Target*) const; + + bool + doing_static_link() const + { + gold_assert(this->doing_static_link_valid_); + return this->doing_static_link_; + } + + // This is just a copy of options().debug(). We make a copy so we + // don't have to #include options.h in order to inline + // is_debugging_enabled, below. + int + debug() const + { + // This can be called before the options are set up. + if (!this->options_valid()) + return 0; + return debug_; + } + + // A convenience routine for combining size and endianness. It also + // checks the HAVE_TARGET_FOO configure options and dies if the + // current target's size/endianness is not supported according to + // HAVE_TARGET_FOO. Otherwise it returns this enum + enum Target_size_endianness + { TARGET_32_LITTLE, TARGET_32_BIG, TARGET_64_LITTLE, TARGET_64_BIG }; + + Target_size_endianness + size_and_endianness() const; + + + private: + Errors* errors_; + const General_options* options_; + Target* target_; + bool doing_static_link_valid_; + bool doing_static_link_; + int debug_; +}; + +// This is a global variable. +extern const Parameters* parameters; + +// We use free functions for these since they affect a global variable +// that is internal to parameters.cc. + +extern void +set_parameters_errors(Errors* errors); + +extern void +set_parameters_options(const General_options* options); + +extern void +set_parameters_target(Target* target); + +extern void +set_parameters_doing_static_link(bool doing_static_link); + +// Ensure that the target to be valid by using the default target if +// necessary. + +extern void +parameters_force_valid_target(); + +// Clear the current target, for testing. + +extern void +parameters_clear_target(); + +// Return whether we are doing a particular debugging type. The +// argument is one of the flags from debug.h. + +inline bool +is_debugging_enabled(unsigned int type) +{ return (parameters->debug() & type) != 0; } + +} // End namespace gold. + +#endif // !defined(GOLD_PARAMETERS_H)