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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gold/] [defstd.cc] - Blame information for rev 190

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1 27 khays
// defstd.cc -- define standard symbols for gold.
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// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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// Written by Ian Lance Taylor <iant@google.com>.
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// This file is part of gold.
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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// MA 02110-1301, USA.
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#include "gold.h"
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#include "symtab.h"
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#include "layout.h"
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#include "defstd.h"
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// This is a simple file which defines the standard symbols like
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// "_end".
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namespace
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{
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using namespace gold;
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const Define_symbol_in_section in_section[] =
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{
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  {
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    "__preinit_array_start",    // name
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    ".preinit_array",           // output_section
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_HIDDEN,         // visibility
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    0,                           // nonvis
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    false,                      // offset_is_from_end
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    true                        // only_if_ref
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  },
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  {
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    "__preinit_array_end",      // name
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    ".preinit_array",           // output_section
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_HIDDEN,         // visibility
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    0,                           // nonvis
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    true,                       // offset_is_from_end
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    true                        // only_if_ref
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  },
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  {
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    "__init_array_start",       // name
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    ".init_array",              // output_section
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_HIDDEN,         // visibility
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    0,                           // nonvis
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    false,                      // offset_is_from_end
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    true                        // only_if_ref
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  },
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  {
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    "__init_array_end",         // name
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    ".init_array",              // output_section
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_HIDDEN,         // visibility
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    0,                           // nonvis
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    true,                       // offset_is_from_end
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    true                        // only_if_ref
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  },
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  {
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    "__fini_array_start",       // name
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    ".fini_array",              // output_section
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_HIDDEN,         // visibility
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    0,                           // nonvis
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    false,                      // offset_is_from_end
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    true                        // only_if_ref
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  },
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  {
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    "__fini_array_end",         // name
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    ".fini_array",              // output_section
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_HIDDEN,         // visibility
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    0,                           // nonvis
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    true,                       // offset_is_from_end
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    true                        // only_if_ref
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  },
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  {
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    "__stack",                  // name
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    ".stack",                   // output_section
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    false,                      // offset_is_from_end
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    true                        // only_if_ref
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  },
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};
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const int in_section_count = sizeof in_section / sizeof in_section[0];
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const Define_symbol_in_segment in_segment[] =
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{
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  {
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    "__executable_start",       // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF(0),               // segment_flags_set
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    elfcpp::PF(0),               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_START,      // offset_from_base
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    true                        // only_if_ref
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  },
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  {
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    "etext",                    // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_X,               // segment_flags_set
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    elfcpp::PF_W,               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_END,        // offset_from_base
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    true                        // only_if_ref
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  },
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  {
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    "_etext",                   // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_X,               // segment_flags_set
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    elfcpp::PF_W,               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_END,        // offset_from_base
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    true                        // only_if_ref
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  },
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  {
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    "__etext",                  // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_X,               // segment_flags_set
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    elfcpp::PF_W,               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_END,        // offset_from_base
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    true                        // only_if_ref
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  },
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  {
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    "_edata",                   // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_W,               // segment_flags_set
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    elfcpp::PF(0),               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_BSS,        // offset_from_base
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    false                       // only_if_ref
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  },
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  {
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    "edata",                    // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_W,               // segment_flags_set
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    elfcpp::PF(0),               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_BSS,        // offset_from_base
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    true                        // only_if_ref
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  },
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  {
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    "__bss_start",              // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_W,               // segment_flags_set
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    elfcpp::PF(0),               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_BSS,        // offset_from_base
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    false                       // only_if_ref
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  },
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  {
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    "_end",                     // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_W,               // segment_flags_set
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    elfcpp::PF(0),               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_END,        // offset_from_base
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    false                       // only_if_ref
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  },
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  {
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    "end",                      // name
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    elfcpp::PT_LOAD,            // segment_type
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    elfcpp::PF_W,               // segment_flags_set
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    elfcpp::PF(0),               // segment_flags_clear
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    0,                           // value
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    0,                           // size
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    elfcpp::STT_NOTYPE,         // type
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    elfcpp::STB_GLOBAL,         // binding
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    elfcpp::STV_DEFAULT,        // visibility
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    0,                           // nonvis
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    Symbol::SEGMENT_END,        // offset_from_base
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    true                        // only_if_ref
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  }
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};
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const int in_segment_count = sizeof in_segment / sizeof in_segment[0];
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} // End anonymous namespace.
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namespace gold
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{
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void
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define_standard_symbols(Symbol_table* symtab, const Layout* layout)
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{
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  bool saw_sections_clause = layout->script_options()->saw_sections_clause();
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  symtab->define_symbols(layout, in_section_count, in_section,
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                         saw_sections_clause);
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  symtab->define_symbols(layout, in_segment_count, in_segment,
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                         saw_sections_clause);
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}
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} // End namespace gold.

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