mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-09 04:21:49 +08:00
2e702c99c5
* configure: Regenerate. gold/ * nacl.cc: New file. * nacl.h: New file. * Makefile.am (CCFILES, HFILES): Add them. * Makefile.in: Regenerate. * i386.cc (Output_data_plt_i386_nacl): New class. (Output_data_plt_i386_nacl_exec): New class. (Output_data_plt_i386_nacl_dyn): New class. (Target_i386_nacl): New class. (Target_selector_i386_nacl): New class. (target_selector_i386): Use it instead of Target_selector_i386. * x86_64.cc (Output_data_plt_x86_64_nacl): New class. (Target_x86_64_nacl): New class. (Target_selector_x86_64_nacl): New class. (target_selector_x86_64, target_selector_x32): Use it instead of Target_selector_x86_64. * arm.cc (Output_data_plt_arm_nacl): New class. (Target_arm_nacl): New class. (Target_selector_arm_nacl): New class. (target_selector_arm, target_selector_armbe): Use it instead of Target_selector_arm. * target-select.cc (select_target): Take new Input_file* and off_t arguments, pass them on to recognize method of selector. * object.cc (make_elf_sized_object): Update caller. * parameters.cc (parameters_force_valid_target): Likewise. * incremental.cc (make_sized_incremental_binary): Likewise. * target-select.h: Update decl. (Target_selector::recognize): Take new Input_file* argument, pass it on to do_recognize. (Target_selector::do_recognize): Take new Input_file* argument. * freebsd.h (Target_selector_freebsd::do_recognize): Likewise. * powerpc.cc (Target_selector_powerpc::do_recognize): Likewise. * sparc.cc (Target_selector_sparc::do_recognize): Likewise. * testsuite/testfile.cc (Target_selector::do_recognize): Likewise. * target.h (Target::Target_info): New members isolate_execinstr and rosegment_gap. (Target::isolate_execinstr, Target::rosegment_gap): New methods. * arm.cc (Target_arm::arm_info): Update initializer. * i386.cc (Target_i386::i386_info): Likewise. * powerpc.cc (Target_powerpc::powerpc_info): Likewise. * sparc.cc (Target_sparc::sparc_info): Likewise. * x86_64.cc (Target_x86_64::x86_64_info): Likewise. * testsuite/testfile.cc (Target_test::test_target_info): Likewise. * layout.cc (Layout::attach_allocated_section_to_segment): Take new const Target* argument. If target->isolate_execinstr(), act like --rosegment. (Layout::find_first_load_seg): Take new const Target* argument; if target->isolate_execinstr(), reject PF_X segments. (Layout::relaxation_loop_body): Update caller. (Layout::set_segment_offsets): If target->isolate_execinstr(), reset file offset to zero when we hit LOAD_SEG, and then do a second loop over the segments before LOAD_SEG to reassign offsets after addresses have been determined. Handle target->rosegment_gap(). (Layout::attach_section_to_segment): Take new const Target* argument; pass it to attach_allocated_section_to_segment. (Layout::make_output_section): Update caller. (Layout::attach_sections_to_segments): Take new const Target* argument; pass it to attach_section_to_segment. * gold.cc (queue_middle_tasks): Update caller. * layout.h (Layout): Update method decls with new arguments. * arm.cc (Target_arm::Target_arm): Take optional argument for the Target_info pointer to use. (Target_arm::do_make_data_plt): New virtual method. (Target_arm::make_data_plt): New method that calls it. (Target_arm::make_plt_entry): Use it. (Output_data_plt_arm::Output_data_plt_arm): Take additional argument for the section alignment. (Output_data_plt_arm::do_first_plt_entry_offset): New abstract virtual method. (Output_data_plt_arm::first_plt_entry_offset): Call it. (Output_data_plt_arm::do_get_plt_entry_size): New abstract virtual method. (Output_data_plt_arm::get_plt_entry_size): Call it. (Output_data_plt_arm::do_fill_plt_entry): New abstract virtual method. (Output_data_plt_arm::fill_plt_entry): New method that calls it. (Output_data_plt_arm::do_fill_first_plt_entry): New abstract virtual method. (Output_data_plt_arm::fill_first_plt_entry): New method that calls it. (Output_data_plt_arm::set_final_data_size): Use get_plt_entry_size method instead of sizeof(plt_entry). (Output_data_plt_arm::add_entry): Likewise. Use first_plt_entry_offset method instead of sizeof(first_plt_entry). (Target_arm::first_plt_entry_offset): Call method on this->plt_ rather than static method. (Target_arm::plt_entry_size): Likewise. (Output_data_plt_arm::first_plt_entry, Output_data_plt_arm::plt_entry): Move to ... (Output_data_plt_arm_standard): ... here, new class. (Output_data_plt_arm::do_write): Move guts of PLT filling to... (Output_data_plt_arm_standard::do_fill_first_plt_entry): ... here ... (Output_data_plt_arm_standard::do_fill_plt_entry): ... and here. * x86_64.cc (Output_data_plt_x86_64::Output_data_plt_x86_64): Take additional argument for the PLT entry size. (Output_data_plt_x86_64::get_tlsdesc_plt_offset): Use get_plt_entry_size method rather than plt_entry_size variable. (Output_data_plt_x86_64::reserve_slot): Likewise. (Output_data_plt_x86_64::do_adjust_output_section): Likewise. (Output_data_plt_x86_64::add_entry): Likewise. (Output_data_plt_x86_64::add_local_ifunc_entry): Likewise. (Output_data_plt_x86_64::address_for_global): Likewise. (Output_data_plt_x86_64::address_for_local): Likewise. (Output_data_plt_x86_64::set_final_data_size): Likewise. (Output_data_plt_x86_64::first_plt_entry_offset): Likewise. Make method non-static. (Output_data_plt_x86_64::do_get_plt_entry_size): New abstract virtual method. (Output_data_plt_x86_64::get_plt_entry_size): Just call that. (Output_data_plt_x86_64::do_add_eh_frame): New abstract virtual method. (Output_data_plt_x86_64::add_eh_frame): New method to call it. (Output_data_plt_x86_64::do_fill_first_plt_entry): New abstract virtual method. (Output_data_plt_x86_64::fill_first_plt_entry): New method to call it. (Output_data_plt_x86_64::do_fill_plt_entry): New abstract virtual method. (Output_data_plt_x86_64::fill_plt_entry): New method to call it. (Output_data_plt_x86_64::do_fill_tlsdesc_entry): New abstract virtual method. (Output_data_plt_x86_64::fill_tlsdesc_entry): New method to call it. (Output_data_plt_x86_64::plt_entry_size) (Output_data_plt_x86_64::first_plt_entry) (Output_data_plt_x86_64::plt_entry) (Output_data_plt_x86_64::tlsdesc_plt_entry) (Output_data_plt_x86_64::plt_eh_frame_fde_size) (Output_data_plt_x86_64::plt_eh_frame_fde): Move to ... (Output_data_plt_x86_64_standard): ... here, new class. (Target_x86_64::Target_x86_64): Take optional argument for the Target_info pointer to use. (Target_x86_64::do_make_data_plt): New virtual method. (Target_x86_64::make_data_plt): New method to call it. (Target_x86_64::init_got_plt_for_update): Use that. Call this->plt_->add_eh_frame method here. (Output_data_plt_x86_64::init): Don't do add_eh_frame_for_plt here. (Target_x86_64::first_plt_entry_offset): Call method on this->plt_ rather than static method. (Target_x86_64::plt_entry_size): Likewise. (Output_data_plt_x86_64::do_write): Use get_plt_entry_size method rather than plt_entry_size variable. Move guts of PLT filling to... (Output_data_plt_x86_64_standard::do_fill_first_plt_entry): ... here ... (Output_data_plt_x86_64_standard::do_fill_plt_entry): ... and here ... (Output_data_plt_x86_64_standard::do_fill_tlsdesc_entry): ... and here. * i386.cc (Output_data_plt_i386::Output_data_plt_i386): Take additional argument for the section alignment. Don't do add_eh_frame_for_plt here. (Output_data_plt_i386::first_plt_entry_offset): Make the method non-static. Use get_plt_entry_size method rather than plt_entry_size variable. (Output_data_plt_i386::do_get_plt_entry_size): New abstract virtual method. (Output_data_plt_i386::get_plt_entry_size): Call it. (Output_data_plt_i386::do_add_eh_frame): New abstract virtual method. (Output_data_plt_i386::add_eh_frame): New method to call it. (Output_data_plt_i386::do_fill_first_plt_entry): New abstract virtual method. (Output_data_plt_i386::fill_first_plt_entry): New method to call it. (Output_data_plt_i386::do_fill_plt_entry): New abstract virtual method. (Output_data_plt_i386::fill_plt_entry): New method to call it. (Output_data_plt_i386::set_final_data_size): Use get_plt_entry_size method instead of plt_entry_size. (Output_data_plt_i386::plt_entry_size) (Output_data_plt_i386::plt_eh_frame_fde_size) (Output_data_plt_i386::plt_eh_frame_fde): Move to ... (Output_data_plt_i386_standard): ... here, new class. (Output_data_plt_i386_exec): New class. (Output_data_plt_i386::exec_first_plt_entry): Move to ... (Output_data_plt_i386_exec::first_plt_entry): ... here. (Output_data_plt_i386::exec_plt_entry): Move to ... (Output_data_plt_i386_exec::plt_entry): ... here. (Output_data_plt_i386_dyn): New class. (Output_data_plt_i386::first_plt_entry): Move to ... (Output_data_plt_i386_dyn::first_plt_entry): ... here. (Output_data_plt_i386::dyn_plt_entry): Move to ... (Output_data_plt_i386_dyn::plt_entry): ... here. (Target_i386::Target_i386): Take optional argument for the Target_info pointer to use. (Target_i386::do_make_data_plt): New virtual method. (Target_i386::make_data_plt): New method to call it. (Target_i386::make_plt_section): Use that. Call this->plt_->add_eh_frame method here. (Output_data_plt_i386::add_entry): Use get_plt_entry_size method rather than plt_entry_size variable. (Output_data_plt_i386::add_local_ifunc_entry): Likewise. (Output_data_plt_i386::address_for_local): Likewise. (Output_data_plt_i386::do_write): Likewise. Move guts of PLT filling to... (Output_data_plt_i386_exec::do_fill_first_plt_entry): ... here ... (Output_data_plt_i386_exec::do_fill_plt_entry): ... and here ... (Output_data_plt_i386_dyn::do_fill_first_plt_entry): ... and here ... (Output_data_plt_i386_dyn::do_fill_plt_entry): ... and here. Change-Id: Id24b95600489835ff5e860a39c147203d4380c2b
280 lines
8.5 KiB
C++
280 lines
8.5 KiB
C++
// target-select.h -- select a target for an object file -*- C++ -*-
|
|
|
|
// Copyright 2006, 2007, 2008, 2009, 2010, 2011, 2012
|
|
// 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_TARGET_SELECT_H
|
|
#define GOLD_TARGET_SELECT_H
|
|
|
|
#include <vector>
|
|
|
|
#include "gold-threads.h"
|
|
|
|
namespace gold
|
|
{
|
|
|
|
class Input_file;
|
|
class Target;
|
|
class Target_selector;
|
|
|
|
// Used to set the target only once.
|
|
|
|
class Set_target_once : public Once
|
|
{
|
|
public:
|
|
Set_target_once(Target_selector* target_selector)
|
|
: target_selector_(target_selector)
|
|
{ }
|
|
|
|
protected:
|
|
void
|
|
do_run_once(void*);
|
|
|
|
private:
|
|
Target_selector* target_selector_;
|
|
};
|
|
|
|
// We want to avoid a master list of targets, which implies using a
|
|
// global constructor. And we also want the program to start up as
|
|
// quickly as possible, which implies avoiding global constructors.
|
|
// We compromise on a very simple global constructor. We use a target
|
|
// selector, which specifies an ELF machine number and a recognition
|
|
// function. We use global constructors to build a linked list of
|
|
// target selectors--a simple pointer list, not a std::list.
|
|
|
|
class Target_selector
|
|
{
|
|
public:
|
|
// Create a target selector for a specific machine number, size (32
|
|
// or 64), and endianness. The machine number can be EM_NONE to
|
|
// test for any machine number. BFD_NAME is the name of the target
|
|
// used by the GNU linker, for backward compatibility; it may be
|
|
// NULL. EMULATION is the name of the emulation used by the GNU
|
|
// linker; it is similar to BFD_NAME.
|
|
Target_selector(int machine, int size, bool is_big_endian,
|
|
const char* bfd_name, const char* emulation);
|
|
|
|
virtual ~Target_selector()
|
|
{ }
|
|
|
|
// If we can handle this target, return a pointer to a target
|
|
// structure. The size and endianness are known.
|
|
Target*
|
|
recognize(Input_file* input_file, off_t offset,
|
|
int machine, int osabi, int abiversion)
|
|
{ return this->do_recognize(input_file, offset, machine, osabi, abiversion); }
|
|
|
|
// If NAME matches the target, return a pointer to a target
|
|
// structure.
|
|
Target*
|
|
recognize_by_bfd_name(const char* name)
|
|
{ return this->do_recognize_by_bfd_name(name); }
|
|
|
|
// Push all supported BFD names onto the vector. This is only used
|
|
// for help output.
|
|
void
|
|
supported_bfd_names(std::vector<const char*>* names)
|
|
{ this->do_supported_bfd_names(names); }
|
|
|
|
// If NAME matches the target emulation, return a pointer to a
|
|
// target structure.
|
|
Target*
|
|
recognize_by_emulation(const char* name)
|
|
{ return this->do_recognize_by_emulation(name); }
|
|
|
|
// Push all supported emulations onto the vector. This is only used
|
|
// for help output.
|
|
void
|
|
supported_emulations(std::vector<const char*>* names)
|
|
{ this->do_supported_emulations(names); }
|
|
|
|
// Return the next Target_selector in the linked list.
|
|
Target_selector*
|
|
next() const
|
|
{ return this->next_; }
|
|
|
|
// Return the machine number this selector is looking for. This can
|
|
// be EM_NONE to match any machine number, in which case the
|
|
// do_recognize hook will be responsible for matching the machine
|
|
// number.
|
|
int
|
|
machine() const
|
|
{ return this->machine_; }
|
|
|
|
// Return the size this is looking for (32 or 64).
|
|
int
|
|
get_size() const
|
|
{ return this->size_; }
|
|
|
|
// Return the endianness this is looking for.
|
|
bool
|
|
is_big_endian() const
|
|
{ return this->is_big_endian_; }
|
|
|
|
// Return the BFD name. This may return NULL, in which case the
|
|
// do_recognize_by_bfd_name hook will be responsible for matching
|
|
// the BFD name.
|
|
const char*
|
|
bfd_name() const
|
|
{ return this->bfd_name_; }
|
|
|
|
// Return the emulation. This may return NULL, in which case the
|
|
// do_recognize_by_emulation hook will be responsible for matching
|
|
// the emulation.
|
|
const char*
|
|
emulation() const
|
|
{ return this->emulation_; }
|
|
|
|
// The reverse mapping, for --print-output-format: if we
|
|
// instantiated TARGET, return our BFD_NAME. If we did not
|
|
// instantiate it, return NULL.
|
|
const char*
|
|
target_bfd_name(const Target* target)
|
|
{ return this->do_target_bfd_name(target); }
|
|
|
|
protected:
|
|
// Return an instance of the real target. This must be implemented
|
|
// by the child class.
|
|
virtual Target*
|
|
do_instantiate_target() = 0;
|
|
|
|
// Recognize an object file given a machine code, OSABI code, and
|
|
// ELF version value. When this is called we already know that they
|
|
// match the machine_, size_, and is_big_endian_ fields. The child
|
|
// class may implement a different version of this to do additional
|
|
// checks, or to check for multiple machine codes if the machine_
|
|
// field is EM_NONE.
|
|
virtual Target*
|
|
do_recognize(Input_file*, off_t, int, int, int)
|
|
{ return this->instantiate_target(); }
|
|
|
|
// Recognize a target by name. When this is called we already know
|
|
// that the name matches (or that the bfd_name_ field is NULL). The
|
|
// child class may implement a different version of this to
|
|
// recognize more than one name.
|
|
virtual Target*
|
|
do_recognize_by_bfd_name(const char*)
|
|
{ return this->instantiate_target(); }
|
|
|
|
// Return a list of supported BFD names. The child class may
|
|
// implement a different version of this to handle more than one
|
|
// name.
|
|
virtual void
|
|
do_supported_bfd_names(std::vector<const char*>* names)
|
|
{
|
|
gold_assert(this->bfd_name_ != NULL);
|
|
names->push_back(this->bfd_name_);
|
|
}
|
|
|
|
// Recognize a target by emulation. When this is called we already
|
|
// know that the name matches (or that the emulation_ field is
|
|
// NULL). The child class may implement a different version of this
|
|
// to recognize more than one emulation.
|
|
virtual Target*
|
|
do_recognize_by_emulation(const char*)
|
|
{ return this->instantiate_target(); }
|
|
|
|
// Return a list of supported emulations. The child class may
|
|
// implement a different version of this to handle more than one
|
|
// emulation.
|
|
virtual void
|
|
do_supported_emulations(std::vector<const char*>* emulations)
|
|
{
|
|
gold_assert(this->emulation_ != NULL);
|
|
emulations->push_back(this->emulation_);
|
|
}
|
|
|
|
// Map from target to BFD name.
|
|
virtual const char*
|
|
do_target_bfd_name(const Target*);
|
|
|
|
// Instantiate the target and return it.
|
|
Target*
|
|
instantiate_target();
|
|
|
|
// Return whether TARGET is the target we instantiated.
|
|
bool
|
|
is_our_target(const Target* target)
|
|
{ return target == this->instantiated_target_; }
|
|
|
|
private:
|
|
// Set the target.
|
|
void
|
|
set_target();
|
|
|
|
friend class Set_target_once;
|
|
|
|
// ELF machine code.
|
|
const int machine_;
|
|
// Target size--32 or 64.
|
|
const int size_;
|
|
// Whether the target is big endian.
|
|
const bool is_big_endian_;
|
|
// BFD name of target, for compatibility.
|
|
const char* const bfd_name_;
|
|
// GNU linker emulation for this target, for compatibility.
|
|
const char* const emulation_;
|
|
// Next entry in list built at global constructor time.
|
|
Target_selector* next_;
|
|
// The singleton Target structure--this points to an instance of the
|
|
// real implementation.
|
|
Target* instantiated_target_;
|
|
// Used to set the target only once.
|
|
Set_target_once set_target_once_;
|
|
};
|
|
|
|
// Select the target for an ELF file.
|
|
|
|
extern Target*
|
|
select_target(Input_file*, off_t,
|
|
int machine, int size, bool big_endian, int osabi,
|
|
int abiversion);
|
|
|
|
// Select a target using a BFD name.
|
|
|
|
extern Target*
|
|
select_target_by_bfd_name(const char* name);
|
|
|
|
// Select a target using a GNU linker emulation.
|
|
|
|
extern Target*
|
|
select_target_by_emulation(const char* name);
|
|
|
|
// Fill in a vector with the list of supported targets. This returns
|
|
// a list of BFD names.
|
|
|
|
extern void
|
|
supported_target_names(std::vector<const char*>*);
|
|
|
|
// Fill in a vector with the list of supported emulations.
|
|
|
|
extern void
|
|
supported_emulation_names(std::vector<const char*>*);
|
|
|
|
// Print the output format, for the --print-output-format option.
|
|
|
|
extern void
|
|
print_output_format();
|
|
|
|
} // End namespace gold.
|
|
|
|
#endif // !defined(GOLD_TARGET_SELECT_H)
|