[binutils.git] / gold / defstd.cc

// defstd.cc -- define standard symbols for gold.

// Copyright 2006, 2007 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <[email protected]>.

// 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
  },
  {
    "__rel_iplt_start",		// name
    ".rel.iplt",		// 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
  },
  {
    "__rel_iplt_end",		// name
    ".rel.iplt",		// 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
  },
  {
    "__rela_iplt_start",	// name
    ".rela.iplt",		// 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
  },
  {
    "__rela_iplt_end",		// name
    ".rela.iplt",		// 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.
Commit	Line	Data
ead1e424 ILT	1	// defstd.cc -- define standard symbols for gold.
ead1e424 ILT	2
6cb15b7f ILT	3	// Copyright 2006, 2007 Free Software Foundation, Inc.
	4	// Written by Ian Lance Taylor <[email protected]>.
	5
	6	// This file is part of gold.
	7
	8	// This program is free software; you can redistribute it and/or modify
	9	// it under the terms of the GNU General Public License as published by
	10	// the Free Software Foundation; either version 3 of the License, or
	11	// (at your option) any later version.
	12
	13	// This program is distributed in the hope that it will be useful,
	14	// but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	// GNU General Public License for more details.
	17
	18	// You should have received a copy of the GNU General Public License
	19	// along with this program; if not, write to the Free Software
	20	// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
	21	// MA 02110-1301, USA.
	22
ead1e424 ILT	23	#include "gold.h"
	24
	25	#include "symtab.h"
a445fddf	26	#include "layout.h"
ead1e424 ILT	27	#include "defstd.h"
	28
	29	// This is a simple file which defines the standard symbols like
	30	// "_end".
	31
	32	namespace
	33	{
	34
	35	using namespace gold;
	36
	37	const Define_symbol_in_section in_section[] =
	38	{
	39	{
	40	"__preinit_array_start", // name
	41	".preinit_array", // output_section
	42	0, // value
	43	0, // size
	44	elfcpp::STT_NOTYPE, // type
	45	elfcpp::STB_GLOBAL, // binding
	46	elfcpp::STV_HIDDEN, // visibility
	47	0, // nonvis
	48	false, // offset_is_from_end
	49	true // only_if_ref
	50	},
	51	{
	52	"__preinit_array_end", // name
	53	".preinit_array", // output_section
	54	0, // value
	55	0, // size
	56	elfcpp::STT_NOTYPE, // type
	57	elfcpp::STB_GLOBAL, // binding
	58	elfcpp::STV_HIDDEN, // visibility
	59	0, // nonvis
	60	true, // offset_is_from_end
	61	true // only_if_ref
	62	},
	63	{
	64	"__init_array_start", // name
	65	".init_array", // output_section
	66	0, // value
	67	0, // size
	68	elfcpp::STT_NOTYPE, // type
	69	elfcpp::STB_GLOBAL, // binding
	70	elfcpp::STV_HIDDEN, // visibility
	71	0, // nonvis
	72	false, // offset_is_from_end
	73	true // only_if_ref
	74	},
	75	{
	76	"__init_array_end", // name
	77	".init_array", // output_section
	78	0, // value
	79	0, // size
	80	elfcpp::STT_NOTYPE, // type
	81	elfcpp::STB_GLOBAL, // binding
	82	elfcpp::STV_HIDDEN, // visibility
	83	0, // nonvis
	84	true, // offset_is_from_end
	85	true // only_if_ref
	86	},
	87	{
	88	"__fini_array_start", // name
	89	".fini_array", // output_section
	90	0, // value
91	0, // size
92	elfcpp::STT_NOTYPE, // type
93	elfcpp::STB_GLOBAL, // binding
94	elfcpp::STV_HIDDEN, // visibility
95	0, // nonvis
96	false, // offset_is_from_end
97	true // only_if_ref
98	},
99	{
100	"__fini_array_end", // name
101	".fini_array", // output_section
102	0, // value
103	0, // size
104	elfcpp::STT_NOTYPE, // type
105	elfcpp::STB_GLOBAL, // binding
106	elfcpp::STV_HIDDEN, // visibility
107	0, // nonvis
108	true, // offset_is_from_end
109	true // only_if_ref
b3d6a3d4 ILT	110	},
	111	{
	112	"__rel_iplt_start", // name
	113	".rel.iplt", // output_section
	114	0, // value
	115	0, // size
	116	elfcpp::STT_NOTYPE, // type
	117	elfcpp::STB_GLOBAL, // binding
	118	elfcpp::STV_HIDDEN, // visibility
	119	0, // nonvis
	120	false, // offset_is_from_end
	121	true // only_if_ref
	122	},
	123	{
	124	"__rel_iplt_end", // name
	125	".rel.iplt", // output_section
	126	0, // value
	127	0, // size
	128	elfcpp::STT_NOTYPE, // type
	129	elfcpp::STB_GLOBAL, // binding
	130	elfcpp::STV_HIDDEN, // visibility
	131	0, // nonvis
	132	true, // offset_is_from_end
	133	true // only_if_ref
	134	},
	135	{
	136	"__rela_iplt_start", // name
	137	".rela.iplt", // output_section
	138	0, // value
	139	0, // size
	140	elfcpp::STT_NOTYPE, // type
	141	elfcpp::STB_GLOBAL, // binding
	142	elfcpp::STV_HIDDEN, // visibility
	143	0, // nonvis
	144	false, // offset_is_from_end
	145	true // only_if_ref
	146	},
	147	{
	148	"__rela_iplt_end", // name
	149	".rela.iplt", // output_section
	150	0, // value
	151	0, // size
	152	elfcpp::STT_NOTYPE, // type
	153	elfcpp::STB_GLOBAL, // binding
	154	elfcpp::STV_HIDDEN, // visibility
	155	0, // nonvis
	156	true, // offset_is_from_end
	157	true // only_if_ref
	158	},
	159	{
	160	"__stack", // name
	161	".stack", // output_section
	162	0, // value
	163	0, // size
	164	elfcpp::STT_NOTYPE, // type
	165	elfcpp::STB_GLOBAL, // binding
	166	elfcpp::STV_DEFAULT, // visibility
	167	0, // nonvis
	168	false, // offset_is_from_end
	169	true // only_if_ref
	170	},
ead1e424 ILT	171	};
	172
	173	const int in_section_count = sizeof in_section / sizeof in_section[0];
	174
	175	const Define_symbol_in_segment in_segment[] =
	176	{
f6ce93d6 ILT	177	{
	178	"__executable_start", // name
	179	elfcpp::PT_LOAD, // segment_type
	180	elfcpp::PF(0), // segment_flags_set
	181	elfcpp::PF(0), // segment_flags_clear
	182	0, // value
	183	0, // size
	184	elfcpp::STT_NOTYPE, // type
	185	elfcpp::STB_GLOBAL, // binding
	186	elfcpp::STV_DEFAULT, // visibility
	187	0, // nonvis
	188	Symbol::SEGMENT_START, // offset_from_base
	189	true // only_if_ref
	190	},
	191	{
	192	"etext", // name
	193	elfcpp::PT_LOAD, // segment_type
	194	elfcpp::PF_X, // segment_flags_set
	195	elfcpp::PF_W, // segment_flags_clear
	196	0, // value
	197	0, // size
	198	elfcpp::STT_NOTYPE, // type
	199	elfcpp::STB_GLOBAL, // binding
	200	elfcpp::STV_DEFAULT, // visibility
	201	0, // nonvis
	202	Symbol::SEGMENT_END, // offset_from_base
	203	true // only_if_ref
	204	},
	205	{
	206	"_etext", // name
	207	elfcpp::PT_LOAD, // segment_type
	208	elfcpp::PF_X, // segment_flags_set
	209	elfcpp::PF_W, // segment_flags_clear
	210	0, // value
	211	0, // size
	212	elfcpp::STT_NOTYPE, // type
	213	elfcpp::STB_GLOBAL, // binding
	214	elfcpp::STV_DEFAULT, // visibility
	215	0, // nonvis
	216	Symbol::SEGMENT_END, // offset_from_base
	217	true // only_if_ref
	218	},
	219	{
	220	"__etext", // name
	221	elfcpp::PT_LOAD, // segment_type
	222	elfcpp::PF_X, // segment_flags_set
	223	elfcpp::PF_W, // segment_flags_clear
	224	0, // value
	225	0, // size
	226	elfcpp::STT_NOTYPE, // type
	227	elfcpp::STB_GLOBAL, // binding
	228	elfcpp::STV_DEFAULT, // visibility
	229	0, // nonvis
	230	Symbol::SEGMENT_END, // offset_from_base
	231	true // only_if_ref
	232	},
	233	{
	234	"_edata", // name
	235	elfcpp::PT_LOAD, // segment_type
04df9a57	236	elfcpp::PF_W, // segment_flags_set
f6ce93d6 ILT	237	elfcpp::PF(0), // segment_flags_clear
	238	0, // value
	239	0, // size
	240	elfcpp::STT_NOTYPE, // type
	241	elfcpp::STB_GLOBAL, // binding
	242	elfcpp::STV_DEFAULT, // visibility
	243	0, // nonvis
	244	Symbol::SEGMENT_BSS, // offset_from_base
	245	false // only_if_ref
	246	},
	247	{
	248	"edata", // name
	249	elfcpp::PT_LOAD, // segment_type
04df9a57	250	elfcpp::PF_W, // segment_flags_set
f6ce93d6 ILT	251	elfcpp::PF(0), // segment_flags_clear
	252	0, // value
	253	0, // size
	254	elfcpp::STT_NOTYPE, // type
	255	elfcpp::STB_GLOBAL, // binding
	256	elfcpp::STV_DEFAULT, // visibility
	257	0, // nonvis
	258	Symbol::SEGMENT_BSS, // offset_from_base
	259	true // only_if_ref
	260	},
	261	{
	262	"__bss_start", // name
	263	elfcpp::PT_LOAD, // segment_type
04df9a57	264	elfcpp::PF_W, // segment_flags_set
f6ce93d6 ILT	265	elfcpp::PF(0), // segment_flags_clear
	266	0, // value
	267	0, // size
	268	elfcpp::STT_NOTYPE, // type
	269	elfcpp::STB_GLOBAL, // binding
	270	elfcpp::STV_DEFAULT, // visibility
	271	0, // nonvis
	272	Symbol::SEGMENT_BSS, // offset_from_base
	273	false // only_if_ref
	274	},
ead1e424 ILT	275	{
	276	"_end", // name
	277	elfcpp::PT_LOAD, // segment_type
04df9a57	278	elfcpp::PF_W, // segment_flags_set
f6ce93d6 ILT	279	elfcpp::PF(0), // segment_flags_clear
	280	0, // value
	281	0, // size
	282	elfcpp::STT_NOTYPE, // type
	283	elfcpp::STB_GLOBAL, // binding
	284	elfcpp::STV_DEFAULT, // visibility
	285	0, // nonvis
04df9a57	286	Symbol::SEGMENT_END, // offset_from_base
f6ce93d6 ILT	287	false // only_if_ref
	288	},
	289	{
	290	"end", // name
	291	elfcpp::PT_LOAD, // segment_type
04df9a57	292	elfcpp::PF_W, // segment_flags_set
ead1e424 ILT	293	elfcpp::PF(0), // segment_flags_clear
	294	0, // value
	295	0, // size
	296	elfcpp::STT_NOTYPE, // type
	297	elfcpp::STB_GLOBAL, // binding
	298	elfcpp::STV_DEFAULT, // visibility
	299	0, // nonvis
04df9a57	300	Symbol::SEGMENT_END, // offset_from_base
e53ad1b5	301	true // only_if_ref
ead1e424 ILT	302	}
	303	};
	304
	305	const int in_segment_count = sizeof in_segment / sizeof in_segment[0];
	306
	307	} // End anonymous namespace.
	308
	309	namespace gold
	310	{
	311
	312	void
9b07f471	313	define_standard_symbols(Symbol_table* symtab, const Layout* layout)
ead1e424	314	{
a445fddf ILT	315	bool saw_sections_clause = layout->script_options()->saw_sections_clause();
	316	symtab->define_symbols(layout, in_section_count, in_section,
	317	saw_sections_clause);
	318	symtab->define_symbols(layout, in_segment_count, in_segment,
	319	saw_sections_clause);
ead1e424 ILT	320	}
	321
	322	} // End namespace gold.