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Diffstat (limited to 'binutils-2.25/gold/defstd.cc')
| -rw-r--r-- | binutils-2.25/gold/defstd.cc | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/binutils-2.25/gold/defstd.cc b/binutils-2.25/gold/defstd.cc new file mode 100644 index 00000000..a7a57e44 --- /dev/null +++ b/binutils-2.25/gold/defstd.cc @@ -0,0 +1,274 @@ +// defstd.cc -- define standard symbols for gold. + +// Copyright 2006, 2007, 2008, 2009, 2010 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. + +#include "gold.h" + +#include "symtab.h" +#include "layout.h" +#include "defstd.h" + +// This is a simple file which defines the standard symbols like +// "_end". + +namespace +{ + +using namespace gold; + +const Define_symbol_in_section in_section[] = +{ + { + "__preinit_array_start", // name + ".preinit_array", // output_section + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + false, // offset_is_from_end + true // only_if_ref + }, + { + "__preinit_array_end", // name + ".preinit_array", // output_section + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + true, // offset_is_from_end + true // only_if_ref + }, + { + "__init_array_start", // name + ".init_array", // output_section + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + false, // offset_is_from_end + true // only_if_ref + }, + { + "__init_array_end", // name + ".init_array", // output_section + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + true, // offset_is_from_end + true // only_if_ref + }, + { + "__fini_array_start", // name + ".fini_array", // output_section + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + false, // offset_is_from_end + true // only_if_ref + }, + { + "__fini_array_end", // name + ".fini_array", // output_section + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_HIDDEN, // visibility + 0, // nonvis + true, // offset_is_from_end + true // only_if_ref + }, + { + "__stack", // name + ".stack", // output_section + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + false, // offset_is_from_end + true // only_if_ref + }, +}; + +const int in_section_count = sizeof in_section / sizeof in_section[0]; + +const Define_symbol_in_segment in_segment[] = +{ + { + "__executable_start", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF(0), // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_START, // offset_from_base + true // only_if_ref + }, + { + "etext", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_X, // segment_flags_set + elfcpp::PF_W, // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_END, // offset_from_base + true // only_if_ref + }, + { + "_etext", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_X, // segment_flags_set + elfcpp::PF_W, // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_END, // offset_from_base + true // only_if_ref + }, + { + "__etext", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_X, // segment_flags_set + elfcpp::PF_W, // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_END, // offset_from_base + true // only_if_ref + }, + { + "_edata", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_W, // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_BSS, // offset_from_base + false // only_if_ref + }, + { + "edata", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_W, // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_BSS, // offset_from_base + true // only_if_ref + }, + { + "__bss_start", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_W, // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_BSS, // offset_from_base + false // only_if_ref + }, + { + "_end", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_W, // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_END, // offset_from_base + false // only_if_ref + }, + { + "end", // name + elfcpp::PT_LOAD, // segment_type + elfcpp::PF_W, // segment_flags_set + elfcpp::PF(0), // segment_flags_clear + 0, // value + 0, // size + elfcpp::STT_NOTYPE, // type + elfcpp::STB_GLOBAL, // binding + elfcpp::STV_DEFAULT, // visibility + 0, // nonvis + Symbol::SEGMENT_END, // offset_from_base + true // only_if_ref + } +}; + +const int in_segment_count = sizeof in_segment / sizeof in_segment[0]; + +} // End anonymous namespace. + +namespace gold +{ + +void +define_standard_symbols(Symbol_table* symtab, const Layout* layout) +{ + bool saw_sections_clause = layout->script_options()->saw_sections_clause(); + symtab->define_symbols(layout, in_section_count, in_section, + saw_sections_clause); + symtab->define_symbols(layout, in_segment_count, in_segment, + saw_sections_clause); +} + +} // End namespace gold. |