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-rw-r--r--gold/nacl.h243
1 files changed, 0 insertions, 243 deletions
diff --git a/gold/nacl.h b/gold/nacl.h
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index 4357500..0000000
--- a/gold/nacl.h
+++ /dev/null
@@ -1,243 +0,0 @@
-// nacl.h -- Native Client support for gold -*- C++ -*-
-
-// Copyright (C) 2012-2025 Free Software Foundation, Inc.
-
-// 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 "elfcpp_file.h"
-#include "fileread.h"
-#include "layout.h"
-#include "target-select.h"
-#include "target.h"
-
-#ifndef GOLD_NACL_H
-#define GOLD_NACL_H
-
-namespace gold
-{
-
-class Sniff_file
-{
- public:
- Sniff_file(Input_file* input_file, off_t offset)
- : file_(input_file->file()), offset_(offset)
- { }
-
- class Location
- {
- public:
- Location(off_t file_offset, off_t data_size)
- : offset_(file_offset), size_(data_size)
- { }
-
- inline off_t offset() const
- { return this->offset_; }
-
- inline section_size_type size() const
- { return this->size_; }
-
- private:
- off_t offset_;
- section_size_type size_;
- };
-
- class View
- {
- public:
- View(File_read& file, off_t file_offset, off_t data_size)
- : data_(file.get_view(file_offset, 0, data_size, true, false))
- { }
-
- const unsigned char* data()
- { return this->data_; }
-
- private:
- const unsigned char* data_;
- };
-
- View view(off_t file_offset, off_t data_size)
- {
- return View(this->file_, this->offset_ + file_offset, data_size);
- }
-
- View view(Location loc)
- {
- return this->view(loc.offset(), loc.size());
- }
-
- // Report an error.
- void
- error(const char* format, ...) const ATTRIBUTE_PRINTF_2;
-
- private:
- File_read& file_;
- off_t offset_;
-};
-
-
-template<class base_selector, class nacl_target>
-class Target_selector_nacl : public base_selector
-{
- public:
- Target_selector_nacl(const char* nacl_abi_name,
- const char* bfd_name, const char* emulation)
- : base_selector(), is_nacl_(false), nacl_abi_name_(nacl_abi_name),
- bfd_name_(bfd_name), emulation_(emulation)
- { }
-
- protected:
- virtual Target*
- do_instantiate_target()
- {
- if (this->is_nacl_)
- return new nacl_target();
- return this->base_selector::do_instantiate_target();
- }
-
- virtual Target*
- do_recognize(Input_file* file, off_t offset,
- int machine, int osabi, int abiversion)
- {
- this->is_nacl_ = file != NULL && this->recognize_nacl_file(file, offset);
- if (this->is_nacl_)
- return this->instantiate_target();
- return this->base_selector::do_recognize(file, offset,
- machine, osabi, abiversion);
- }
-
- virtual Target*
- do_recognize_by_bfd_name(const char* name)
- {
- gold_assert(this->bfd_name_ != NULL);
- this->is_nacl_ = strcmp(name, this->bfd_name_) == 0;
- if (this->is_nacl_)
- return this->instantiate_target();
- return this->base_selector::do_recognize_by_bfd_name(name);
- }
-
- virtual void
- do_supported_bfd_names(std::vector<const char*>* names)
- {
- gold_assert(this->bfd_name_ != NULL);
- this->base_selector::do_supported_bfd_names(names);
- names->push_back(this->bfd_name_);
- }
-
- virtual void
- do_supported_emulations(std::vector<const char*>* emulations)
- {
- gold_assert(this->emulation_ != NULL);
- this->base_selector::do_supported_emulations(emulations);
- emulations->push_back(this->emulation_);
- }
-
- virtual const char*
- do_target_bfd_name(const Target* target)
- {
- return (!this->is_our_target(target)
- ? NULL
- : (this->is_nacl_
- ? this->bfd_name_
- : base_selector::do_target_bfd_name(target)));
- }
-
- private:
- bool
- recognize_nacl_file(Input_file* input_file, off_t offset)
- {
- if (this->is_big_endian())
- {
-#if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG)
-# ifdef HAVE_TARGET_32_BIG
- if (this->get_size() == 32)
- return do_recognize_nacl_file<32, true>(input_file, offset);
-# endif
-# ifdef HAVE_TARGET_64_BIG
- if (this->get_size() == 64)
- return do_recognize_nacl_file<64, true>(input_file, offset);
-# endif
-#endif
- gold_unreachable();
- }
- else
- {
-#if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE)
-# ifdef HAVE_TARGET_32_LITTLE
- if (this->get_size() == 32)
- return do_recognize_nacl_file<32, false>(input_file, offset);
-# endif
-# ifdef HAVE_TARGET_64_LITTLE
- if (this->get_size() == 64)
- return do_recognize_nacl_file<64, false>(input_file, offset);
-# endif
-#endif
- gold_unreachable();
- }
- }
-
- template<int size, bool big_endian>
- bool
- do_recognize_nacl_file(Input_file* input_file, off_t offset)
- {
- Sniff_file file(input_file, offset);
- elfcpp::Elf_file<size, big_endian, Sniff_file> elf_file(&file);
- const unsigned int shnum = elf_file.shnum();
- for (unsigned int shndx = 1; shndx < shnum; ++shndx)
- {
- if (elf_file.section_type(shndx) == elfcpp::SHT_NOTE)
- {
- Sniff_file::Location loc = elf_file.section_contents(shndx);
- if (loc.size() < (3 * 4
- + align_address(sizeof "NaCl", 4)
- + align_address(nacl_abi_name_.size() + 1, 4)))
- continue;
- Sniff_file::View view(file.view(loc));
- const unsigned char* note_data = view.data();
- if ((elfcpp::Swap<32, big_endian>::readval(note_data + 0)
- == sizeof "NaCl")
- && (elfcpp::Swap<32, big_endian>::readval(note_data + 4)
- == nacl_abi_name_.size() + 1)
- && (elfcpp::Swap<32, big_endian>::readval(note_data + 8)
- == elfcpp::NT_VERSION))
- {
- const unsigned char* name = note_data + 12;
- const unsigned char* desc = (name
- + align_address(sizeof "NaCl", 4));
- if (memcmp(name, "NaCl", sizeof "NaCl") == 0
- && memcmp(desc, nacl_abi_name_.c_str(),
- nacl_abi_name_.size() + 1) == 0)
- return true;
- }
- }
- }
- return false;
- }
-
- // Whether we decided this was the NaCl target variant.
- bool is_nacl_;
- // The string found in the NaCl ABI note.
- std::string nacl_abi_name_;
- // BFD name of NaCl target, for compatibility.
- const char* const bfd_name_;
- // GNU linker emulation for this NaCl target, for compatibility.
- const char* const emulation_;
-};
-
-} // end namespace gold
-
-#endif // !defined(GOLD_NACL_H)
generated by cgit v1.1 at 2025-07-31 02:03:58 +0000