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author | Andrew Hsieh <andrewhsieh@google.com> | 2014-06-13 12:38:00 -0700 |
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committer | Andrew Hsieh <andrewhsieh@google.com> | 2014-06-13 12:38:00 -0700 |
commit | 54f1b3cf509cd889905287cb8ce6c5ae33911a21 (patch) | |
tree | e39b1a7fa04db86a8215b7f9d4656d74e394aec0 /binutils-2.25/gold/parameters.h | |
parent | 2a6558a8ecfb81d75215b4ec7dc61113e12cfd5f (diff) | |
download | toolchain_binutils-54f1b3cf509cd889905287cb8ce6c5ae33911a21.zip toolchain_binutils-54f1b3cf509cd889905287cb8ce6c5ae33911a21.tar.gz toolchain_binutils-54f1b3cf509cd889905287cb8ce6c5ae33911a21.tar.bz2 |
Add upstream binutils-2.25 snapshot 4/4 2014
For MIPS -mmsa support
Change-Id: I08c4f002fa7b33dec85ed75956e6ab551bb03c96
Diffstat (limited to 'binutils-2.25/gold/parameters.h')
-rw-r--r-- | binutils-2.25/gold/parameters.h | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/binutils-2.25/gold/parameters.h b/binutils-2.25/gold/parameters.h new file mode 100644 index 0000000..8d1ec2e --- /dev/null +++ b/binutils-2.25/gold/parameters.h @@ -0,0 +1,246 @@ +// parameters.h -- general parameters for a link using gold -*- C++ -*- + +// Copyright 2006, 2007, 2008, 2009, 2010, 2013 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; +class Errors; +class Timer; +class Target; +template<int size, bool big_endian> +class Sized_target; +class Set_parameters_target_once; + +// 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(); + + // These should be called as soon as they are known. + void + set_errors(Errors* errors); + + void + set_timer(Timer* timer); + + 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_; } + + // Return the timer object. + Timer* + timer() const + { return this->timer_; } + + // 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<int size, bool big_endian> + Sized_target<size, big_endian>* + sized_target() const + { + gold_assert(this->target_valid()); + return static_cast<Sized_target<size, big_endian>*>(this->target_); + } + + // Clear the target, for testing. + void + clear_target(); + + // 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_; + } + + // Return the name of the entry symbol. + const char* + entry() const; + + // 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; + + // Set the incremental linking mode to INCREMENTAL_FULL. Used when + // the linker determines that an incremental update is not possible. + // Returns false if the incremental mode was INCREMENTAL_UPDATE, + // indicating that the linker should exit if an update is not possible. + bool + set_incremental_full(); + + // Return true if we need to prepare incremental linking information. + bool + incremental() const; + + // Return true if we are doing a full incremental link. + bool + incremental_full() const; + + // Return true if we are doing an incremental update. + bool + incremental_update() const; + + private: + void + set_target_once(Target*); + + void + check_target_endianness(); + + void + check_rodata_segment(); + + friend class Set_parameters_target_once; + + Errors* errors_; + Timer* timer_; + const General_options* options_; + Target* target_; + bool doing_static_link_valid_; + bool doing_static_link_; + int debug_; + int incremental_mode_; + Set_parameters_target_once* set_parameters_target_once_; +}; + +// 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_timer(Timer* timer); + +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); + +extern bool +set_parameters_incremental_full(); + +// 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) |