2012-03-26 19:18:29 +00:00
|
|
|
/* ELF object file format
|
2022-10-27 18:45:45 +00:00
|
|
|
Copyright (C) 1992-2022 Free Software Foundation, Inc.
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
This file is part of GAS, the GNU Assembler.
|
|
|
|
|
|
|
|
GAS 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,
|
|
|
|
or (at your option) any later version.
|
|
|
|
|
|
|
|
GAS 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 GAS; see the file COPYING. If not, write to the Free
|
|
|
|
Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
|
|
|
|
02110-1301, USA. */
|
|
|
|
|
|
|
|
#define OBJ_HEADER "obj-elf.h"
|
|
|
|
#include "as.h"
|
|
|
|
#include "safe-ctype.h"
|
|
|
|
#include "subsegs.h"
|
|
|
|
#include "obstack.h"
|
|
|
|
#include "dwarf2dbg.h"
|
|
|
|
|
|
|
|
#ifndef ECOFF_DEBUGGING
|
|
|
|
#define ECOFF_DEBUGGING 0
|
|
|
|
#else
|
|
|
|
#define NEED_ECOFF_DEBUG
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
#include "ecoff.h"
|
2022-10-27 18:45:45 +00:00
|
|
|
#include "bfd/ecoff-bfd.h"
|
2012-03-26 19:18:29 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef TC_ALPHA
|
|
|
|
#include "elf/alpha.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef TC_MIPS
|
|
|
|
#include "elf/mips.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef TC_PPC
|
|
|
|
#include "elf/ppc.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef TC_I386
|
|
|
|
#include "elf/x86-64.h"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef TC_MEP
|
|
|
|
#include "elf/mep.h"
|
|
|
|
#endif
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
#ifdef TC_NIOS2
|
|
|
|
#include "elf/nios2.h"
|
|
|
|
#endif
|
|
|
|
|
2017-10-07 00:16:47 +00:00
|
|
|
#ifdef TC_PRU
|
|
|
|
#include "elf/pru.h"
|
|
|
|
#endif
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
static void obj_elf_line (int);
|
|
|
|
static void obj_elf_size (int);
|
|
|
|
static void obj_elf_type (int);
|
|
|
|
static void obj_elf_ident (int);
|
|
|
|
static void obj_elf_weak (int);
|
|
|
|
static void obj_elf_local (int);
|
|
|
|
static void obj_elf_visibility (int);
|
|
|
|
static void obj_elf_symver (int);
|
|
|
|
static void obj_elf_subsection (int);
|
|
|
|
static void obj_elf_popsection (int);
|
2014-09-12 22:14:23 +00:00
|
|
|
static void obj_elf_gnu_attribute (int);
|
2012-03-26 19:18:29 +00:00
|
|
|
static void obj_elf_tls_common (int);
|
|
|
|
static void obj_elf_lcomm (int);
|
|
|
|
static void obj_elf_struct (int);
|
2022-10-27 18:45:45 +00:00
|
|
|
static void obj_elf_attach_to_group (int);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
static const pseudo_typeS elf_pseudo_table[] =
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
{"attach_to_group", obj_elf_attach_to_group, 0},
|
2012-03-26 19:18:29 +00:00
|
|
|
{"comm", obj_elf_common, 0},
|
|
|
|
{"common", obj_elf_common, 1},
|
|
|
|
{"ident", obj_elf_ident, 0},
|
|
|
|
{"lcomm", obj_elf_lcomm, 0},
|
|
|
|
{"local", obj_elf_local, 0},
|
|
|
|
{"previous", obj_elf_previous, 0},
|
|
|
|
{"section", obj_elf_section, 0},
|
|
|
|
{"section.s", obj_elf_section, 0},
|
|
|
|
{"sect", obj_elf_section, 0},
|
|
|
|
{"sect.s", obj_elf_section, 0},
|
|
|
|
{"pushsection", obj_elf_section, 1},
|
|
|
|
{"popsection", obj_elf_popsection, 0},
|
|
|
|
{"size", obj_elf_size, 0},
|
|
|
|
{"type", obj_elf_type, 0},
|
|
|
|
{"version", obj_elf_version, 0},
|
|
|
|
{"weak", obj_elf_weak, 0},
|
|
|
|
|
|
|
|
/* These define symbol visibility. */
|
|
|
|
{"internal", obj_elf_visibility, STV_INTERNAL},
|
|
|
|
{"hidden", obj_elf_visibility, STV_HIDDEN},
|
|
|
|
{"protected", obj_elf_visibility, STV_PROTECTED},
|
|
|
|
|
|
|
|
/* These are used for stabs-in-elf configurations. */
|
|
|
|
{"line", obj_elf_line, 0},
|
|
|
|
|
|
|
|
/* This is a GNU extension to handle symbol versions. */
|
|
|
|
{"symver", obj_elf_symver, 0},
|
|
|
|
|
|
|
|
/* A GNU extension to change subsection only. */
|
|
|
|
{"subsection", obj_elf_subsection, 0},
|
|
|
|
|
|
|
|
/* These are GNU extensions to aid in garbage collecting C++ vtables. */
|
2018-12-28 15:25:28 +00:00
|
|
|
{"vtable_inherit", obj_elf_vtable_inherit, 0},
|
|
|
|
{"vtable_entry", obj_elf_vtable_entry, 0},
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
/* A GNU extension for object attributes. */
|
|
|
|
{"gnu_attribute", obj_elf_gnu_attribute, 0},
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
/* These are used for dwarf2. */
|
2018-12-28 15:25:28 +00:00
|
|
|
{ "file", dwarf2_directive_file, 0 },
|
2012-03-26 19:18:29 +00:00
|
|
|
{ "loc", dwarf2_directive_loc, 0 },
|
|
|
|
{ "loc_mark_labels", dwarf2_directive_loc_mark_labels, 0 },
|
|
|
|
|
|
|
|
/* We need to trap the section changing calls to handle .previous. */
|
|
|
|
{"data", obj_elf_data, 0},
|
|
|
|
{"offset", obj_elf_struct, 0},
|
|
|
|
{"struct", obj_elf_struct, 0},
|
|
|
|
{"text", obj_elf_text, 0},
|
2022-10-27 18:45:45 +00:00
|
|
|
{"bss", obj_elf_bss, 0},
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
{"tls_common", obj_elf_tls_common, 0},
|
|
|
|
|
|
|
|
/* End sentinel. */
|
|
|
|
{NULL, NULL, 0},
|
|
|
|
};
|
|
|
|
|
|
|
|
static const pseudo_typeS ecoff_debug_pseudo_table[] =
|
|
|
|
{
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
/* COFF style debugging information for ECOFF. .ln is not used; .loc
|
|
|
|
is used instead. */
|
|
|
|
{ "def", ecoff_directive_def, 0 },
|
|
|
|
{ "dim", ecoff_directive_dim, 0 },
|
|
|
|
{ "endef", ecoff_directive_endef, 0 },
|
|
|
|
{ "file", ecoff_directive_file, 0 },
|
|
|
|
{ "scl", ecoff_directive_scl, 0 },
|
|
|
|
{ "tag", ecoff_directive_tag, 0 },
|
|
|
|
{ "val", ecoff_directive_val, 0 },
|
|
|
|
|
|
|
|
/* COFF debugging requires pseudo-ops .size and .type, but ELF
|
|
|
|
already has meanings for those. We use .esize and .etype
|
|
|
|
instead. These are only generated by gcc anyhow. */
|
|
|
|
{ "esize", ecoff_directive_size, 0 },
|
|
|
|
{ "etype", ecoff_directive_type, 0 },
|
|
|
|
|
|
|
|
/* ECOFF specific debugging information. */
|
2017-10-07 00:16:47 +00:00
|
|
|
{ "aent", ecoff_directive_ent, 1 },
|
2012-03-26 19:18:29 +00:00
|
|
|
{ "begin", ecoff_directive_begin, 0 },
|
|
|
|
{ "bend", ecoff_directive_bend, 0 },
|
|
|
|
{ "end", ecoff_directive_end, 0 },
|
|
|
|
{ "ent", ecoff_directive_ent, 0 },
|
|
|
|
{ "fmask", ecoff_directive_fmask, 0 },
|
|
|
|
{ "frame", ecoff_directive_frame, 0 },
|
|
|
|
{ "loc", ecoff_directive_loc, 0 },
|
|
|
|
{ "mask", ecoff_directive_mask, 0 },
|
|
|
|
|
|
|
|
/* Other ECOFF directives. */
|
|
|
|
{ "extern", ecoff_directive_extern, 0 },
|
|
|
|
|
|
|
|
/* These are used on Irix. I don't know how to implement them. */
|
|
|
|
{ "alias", s_ignore, 0 },
|
|
|
|
{ "bgnb", s_ignore, 0 },
|
|
|
|
{ "endb", s_ignore, 0 },
|
|
|
|
{ "lab", s_ignore, 0 },
|
|
|
|
{ "noalias", s_ignore, 0 },
|
|
|
|
{ "verstamp", s_ignore, 0 },
|
|
|
|
{ "vreg", s_ignore, 0 },
|
|
|
|
#endif
|
|
|
|
|
|
|
|
{NULL, NULL, 0} /* end sentinel */
|
|
|
|
};
|
|
|
|
|
|
|
|
#undef NO_RELOC
|
|
|
|
#include "aout/aout64.h"
|
|
|
|
|
|
|
|
/* This is called when the assembler starts. */
|
|
|
|
|
|
|
|
asection *elf_com_section_ptr;
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_begin (void)
|
|
|
|
{
|
|
|
|
asection *s;
|
|
|
|
|
|
|
|
/* Add symbols for the known sections to the symbol table. */
|
|
|
|
s = bfd_get_section_by_name (stdoutput, TEXT_SECTION_NAME);
|
|
|
|
symbol_table_insert (section_symbol (s));
|
|
|
|
s = bfd_get_section_by_name (stdoutput, DATA_SECTION_NAME);
|
|
|
|
symbol_table_insert (section_symbol (s));
|
|
|
|
s = bfd_get_section_by_name (stdoutput, BSS_SECTION_NAME);
|
|
|
|
symbol_table_insert (section_symbol (s));
|
|
|
|
elf_com_section_ptr = bfd_com_section_ptr;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_pop_insert (void)
|
|
|
|
{
|
|
|
|
pop_insert (elf_pseudo_table);
|
|
|
|
if (ECOFF_DEBUGGING)
|
|
|
|
pop_insert (ecoff_debug_pseudo_table);
|
|
|
|
}
|
|
|
|
|
|
|
|
static bfd_vma
|
|
|
|
elf_s_get_size (symbolS *sym)
|
|
|
|
{
|
|
|
|
return S_GET_SIZE (sym);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
elf_s_set_size (symbolS *sym, bfd_vma sz)
|
|
|
|
{
|
|
|
|
S_SET_SIZE (sym, sz);
|
|
|
|
}
|
|
|
|
|
|
|
|
static bfd_vma
|
|
|
|
elf_s_get_align (symbolS *sym)
|
|
|
|
{
|
|
|
|
return S_GET_ALIGN (sym);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
elf_s_set_align (symbolS *sym, bfd_vma align)
|
|
|
|
{
|
|
|
|
S_SET_ALIGN (sym, align);
|
|
|
|
}
|
|
|
|
|
|
|
|
int
|
|
|
|
elf_s_get_other (symbolS *sym)
|
|
|
|
{
|
|
|
|
return elf_symbol (symbol_get_bfdsym (sym))->internal_elf_sym.st_other;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
elf_s_set_other (symbolS *sym, int other)
|
|
|
|
{
|
|
|
|
S_SET_OTHER (sym, other);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
elf_sec_sym_ok_for_reloc (asection *sec)
|
|
|
|
{
|
|
|
|
return obj_sec_sym_ok_for_reloc (sec);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2022-10-27 18:45:45 +00:00
|
|
|
elf_file_symbol (const char *s)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
asymbol *bsym;
|
|
|
|
symbolS *sym = symbol_new (s, absolute_section, &zero_address_frag, 0);
|
|
|
|
size_t name_length = strlen (s);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (name_length > strlen (S_GET_NAME (sym)))
|
|
|
|
{
|
|
|
|
obstack_grow (¬es, s, name_length + 1);
|
|
|
|
S_SET_NAME (sym, (const char *) obstack_finish (¬es));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
strcpy ((char *) S_GET_NAME (sym), s);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
symbol_get_bfdsym (sym)->flags |= BSF_FILE;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (symbol_rootP != sym
|
|
|
|
&& ((bsym = symbol_get_bfdsym (symbol_rootP)) == NULL
|
|
|
|
|| (bsym->flags & BSF_FILE) == 0))
|
|
|
|
{
|
|
|
|
symbol_remove (sym, &symbol_rootP, &symbol_lastP);
|
|
|
|
symbol_insert (sym, symbol_rootP, &symbol_rootP, &symbol_lastP);
|
|
|
|
}
|
2017-04-10 11:32:00 +00:00
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
#ifdef DEBUG
|
2022-10-27 18:45:45 +00:00
|
|
|
verify_symbol_chain (symbol_rootP, symbol_lastP);
|
2012-03-26 19:18:29 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
2022-10-27 18:45:45 +00:00
|
|
|
ecoff_new_file (s);
|
2012-03-26 19:18:29 +00:00
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Called from read.c:s_comm after we've parsed .comm symbol, size.
|
|
|
|
Parse a possible alignment value. */
|
|
|
|
|
|
|
|
symbolS *
|
|
|
|
elf_common_parse (int ignore ATTRIBUTE_UNUSED, symbolS *symbolP, addressT size)
|
|
|
|
{
|
|
|
|
addressT align = 0;
|
|
|
|
int is_local = symbol_get_obj (symbolP)->local;
|
|
|
|
|
|
|
|
if (*input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
char *save = input_line_pointer;
|
|
|
|
|
|
|
|
input_line_pointer++;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
|
|
|
|
if (*input_line_pointer == '"')
|
|
|
|
{
|
|
|
|
/* For sparc. Accept .common symbol, length, "bss" */
|
|
|
|
input_line_pointer++;
|
|
|
|
/* Some use the dot, some don't. */
|
|
|
|
if (*input_line_pointer == '.')
|
|
|
|
input_line_pointer++;
|
|
|
|
/* Some say data, some say bss. */
|
2022-10-27 18:45:45 +00:00
|
|
|
if (startswith (input_line_pointer, "bss\""))
|
2012-03-26 19:18:29 +00:00
|
|
|
input_line_pointer += 4;
|
2022-10-27 18:45:45 +00:00
|
|
|
else if (startswith (input_line_pointer, "data\""))
|
2012-03-26 19:18:29 +00:00
|
|
|
input_line_pointer += 5;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
char *p = input_line_pointer;
|
|
|
|
char c;
|
|
|
|
|
|
|
|
while (*--p != '"')
|
|
|
|
;
|
|
|
|
while (!is_end_of_line[(unsigned char) *input_line_pointer])
|
|
|
|
if (*input_line_pointer++ == '"')
|
|
|
|
break;
|
|
|
|
c = *input_line_pointer;
|
|
|
|
*input_line_pointer = '\0';
|
|
|
|
as_bad (_("bad .common segment %s"), p);
|
|
|
|
*input_line_pointer = c;
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
/* ??? Don't ask me why these are always global. */
|
|
|
|
is_local = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
input_line_pointer = save;
|
|
|
|
align = parse_align (is_local);
|
|
|
|
if (align == (addressT) -1)
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (is_local)
|
|
|
|
{
|
|
|
|
bss_alloc (symbolP, size, align);
|
|
|
|
S_CLEAR_EXTERNAL (symbolP);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
S_SET_VALUE (symbolP, size);
|
|
|
|
S_SET_ALIGN (symbolP, align);
|
|
|
|
S_SET_EXTERNAL (symbolP);
|
|
|
|
S_SET_SEGMENT (symbolP, elf_com_section_ptr);
|
|
|
|
}
|
|
|
|
|
|
|
|
symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
|
|
|
|
|
|
|
|
return symbolP;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_common (int is_common)
|
|
|
|
{
|
|
|
|
if (flag_mri && is_common)
|
|
|
|
s_mri_common (0);
|
|
|
|
else
|
|
|
|
s_comm_internal (0, elf_common_parse);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_tls_common (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
symbolS *symbolP = s_comm_internal (0, elf_common_parse);
|
|
|
|
|
|
|
|
if (symbolP)
|
|
|
|
symbol_get_bfdsym (symbolP)->flags |= BSF_THREAD_LOCAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_lcomm (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
symbolS *symbolP = s_comm_internal (0, s_lcomm_internal);
|
|
|
|
|
|
|
|
if (symbolP)
|
|
|
|
symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
|
|
|
|
}
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
static symbolS *
|
|
|
|
get_sym_from_input_line_and_check (void)
|
|
|
|
{
|
|
|
|
char *name;
|
|
|
|
char c;
|
|
|
|
symbolS *sym;
|
|
|
|
|
2017-04-10 11:32:00 +00:00
|
|
|
c = get_symbol_name (& name);
|
2014-09-12 22:14:23 +00:00
|
|
|
sym = symbol_find_or_make (name);
|
|
|
|
*input_line_pointer = c;
|
2017-04-10 11:32:00 +00:00
|
|
|
SKIP_WHITESPACE_AFTER_NAME ();
|
2014-09-12 22:14:23 +00:00
|
|
|
|
|
|
|
/* There is no symbol name if input_line_pointer has not moved. */
|
|
|
|
if (name == input_line_pointer)
|
|
|
|
as_bad (_("Missing symbol name in directive"));
|
|
|
|
return sym;
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
static void
|
|
|
|
obj_elf_local (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
int c;
|
|
|
|
symbolS *symbolP;
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
2014-09-12 22:14:23 +00:00
|
|
|
symbolP = get_sym_from_input_line_and_check ();
|
|
|
|
c = *input_line_pointer;
|
2012-03-26 19:18:29 +00:00
|
|
|
S_CLEAR_EXTERNAL (symbolP);
|
|
|
|
symbol_get_obj (symbolP)->local = 1;
|
|
|
|
if (c == ',')
|
|
|
|
{
|
|
|
|
input_line_pointer++;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (*input_line_pointer == '\n')
|
|
|
|
c = '\n';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
while (c == ',');
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_weak (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
int c;
|
|
|
|
symbolS *symbolP;
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
2014-09-12 22:14:23 +00:00
|
|
|
symbolP = get_sym_from_input_line_and_check ();
|
|
|
|
c = *input_line_pointer;
|
2012-03-26 19:18:29 +00:00
|
|
|
S_SET_WEAK (symbolP);
|
|
|
|
if (c == ',')
|
|
|
|
{
|
|
|
|
input_line_pointer++;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (*input_line_pointer == '\n')
|
|
|
|
c = '\n';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
while (c == ',');
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_visibility (int visibility)
|
|
|
|
{
|
|
|
|
int c;
|
|
|
|
symbolS *symbolP;
|
|
|
|
asymbol *bfdsym;
|
|
|
|
elf_symbol_type *elfsym;
|
|
|
|
|
|
|
|
do
|
|
|
|
{
|
2014-09-12 22:14:23 +00:00
|
|
|
symbolP = get_sym_from_input_line_and_check ();
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
bfdsym = symbol_get_bfdsym (symbolP);
|
2022-10-27 18:45:45 +00:00
|
|
|
elfsym = elf_symbol_from (bfdsym);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
gas_assert (elfsym);
|
|
|
|
|
|
|
|
elfsym->internal_elf_sym.st_other &= ~3;
|
|
|
|
elfsym->internal_elf_sym.st_other |= visibility;
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
c = *input_line_pointer;
|
2012-03-26 19:18:29 +00:00
|
|
|
if (c == ',')
|
|
|
|
{
|
|
|
|
input_line_pointer ++;
|
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
|
|
|
|
if (*input_line_pointer == '\n')
|
|
|
|
c = '\n';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
while (c == ',');
|
|
|
|
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
|
|
|
static segT previous_section;
|
|
|
|
static int previous_subsection;
|
|
|
|
|
|
|
|
struct section_stack
|
|
|
|
{
|
|
|
|
struct section_stack *next;
|
|
|
|
segT seg, prev_seg;
|
|
|
|
int subseg, prev_subseg;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct section_stack *section_stack;
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
/* ELF section flags for unique sections. */
|
|
|
|
#define SEC_ASSEMBLER_SHF_MASK SHF_GNU_RETAIN
|
2022-10-27 18:43:13 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Return TRUE iff SEC matches the section info INF. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
get_section_by_match (bfd *abfd ATTRIBUTE_UNUSED, asection *sec, void *inf)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
struct elf_section_match *match = (struct elf_section_match *) inf;
|
2017-10-07 00:16:47 +00:00
|
|
|
const char *gname = match->group_name;
|
2012-03-26 19:18:29 +00:00
|
|
|
const char *group_name = elf_group_name (sec);
|
2022-10-27 18:45:45 +00:00
|
|
|
const char *linked_to_symbol_name
|
|
|
|
= sec->map_head.linked_to_symbol_name;
|
|
|
|
unsigned int sh_info = elf_section_data (sec)->this_hdr.sh_info;
|
|
|
|
bfd_vma sh_flags = (elf_section_data (sec)->this_hdr.sh_flags
|
|
|
|
& SEC_ASSEMBLER_SHF_MASK);
|
|
|
|
|
|
|
|
return (sh_info == match->sh_info
|
|
|
|
&& sh_flags == match->sh_flags
|
|
|
|
&& ((bfd_section_flags (sec) & SEC_ASSEMBLER_SECTION_ID)
|
|
|
|
== (match->flags & SEC_ASSEMBLER_SECTION_ID))
|
|
|
|
&& sec->section_id == match->section_id
|
2017-10-07 00:16:47 +00:00
|
|
|
&& (group_name == gname
|
|
|
|
|| (group_name != NULL
|
|
|
|
&& gname != NULL
|
2022-10-27 18:45:45 +00:00
|
|
|
&& strcmp (group_name, gname) == 0))
|
|
|
|
&& (linked_to_symbol_name == match->linked_to_symbol_name
|
|
|
|
|| (linked_to_symbol_name != NULL
|
|
|
|
&& match->linked_to_symbol_name != NULL
|
|
|
|
&& strcmp (linked_to_symbol_name,
|
|
|
|
match->linked_to_symbol_name) == 0)));
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Handle the .section pseudo-op. This code supports two different
|
|
|
|
syntaxes.
|
|
|
|
|
|
|
|
The first is found on Solaris, and looks like
|
|
|
|
.section ".sec1",#alloc,#execinstr,#write
|
|
|
|
Here the names after '#' are the SHF_* flags to turn on for the
|
|
|
|
section. I'm not sure how it determines the SHT_* type (BFD
|
|
|
|
doesn't really give us control over the type, anyhow).
|
|
|
|
|
|
|
|
The second format is found on UnixWare, and probably most SVR4
|
|
|
|
machines, and looks like
|
|
|
|
.section .sec1,"a",@progbits
|
|
|
|
The quoted string may contain any combination of a, w, x, and
|
|
|
|
represents the SHF_* flags to turn on for the section. The string
|
|
|
|
beginning with '@' can be progbits or nobits. There should be
|
|
|
|
other possibilities, but I don't know what they are. In any case,
|
|
|
|
BFD doesn't really let us set the section type. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_change_section (const char *name,
|
2017-04-10 11:32:00 +00:00
|
|
|
unsigned int type,
|
2012-03-26 19:18:29 +00:00
|
|
|
bfd_vma attr,
|
|
|
|
int entsize,
|
2022-10-27 18:45:45 +00:00
|
|
|
struct elf_section_match *match_p,
|
2012-03-26 19:18:29 +00:00
|
|
|
int linkonce,
|
|
|
|
int push)
|
|
|
|
{
|
|
|
|
asection *old_sec;
|
|
|
|
segT sec;
|
|
|
|
flagword flags;
|
|
|
|
const struct elf_backend_data *bed;
|
|
|
|
const struct bfd_elf_special_section *ssect;
|
2022-10-27 18:45:45 +00:00
|
|
|
|
|
|
|
if (match_p == NULL)
|
|
|
|
{
|
|
|
|
static struct elf_section_match unused_match;
|
|
|
|
match_p = &unused_match;
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Switch to the section, creating it if necessary. */
|
|
|
|
if (push)
|
|
|
|
{
|
|
|
|
struct section_stack *elt;
|
2017-04-10 11:32:00 +00:00
|
|
|
elt = XNEW (struct section_stack);
|
2012-03-26 19:18:29 +00:00
|
|
|
elt->next = section_stack;
|
|
|
|
elt->seg = now_seg;
|
|
|
|
elt->prev_seg = previous_section;
|
|
|
|
elt->subseg = now_subseg;
|
|
|
|
elt->prev_subseg = previous_subsection;
|
|
|
|
section_stack = elt;
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_change_hook ();
|
|
|
|
|
|
|
|
old_sec = bfd_get_section_by_name_if (stdoutput, name, get_section_by_match,
|
|
|
|
(void *) match_p);
|
2012-03-26 19:18:29 +00:00
|
|
|
if (old_sec)
|
|
|
|
{
|
|
|
|
sec = old_sec;
|
|
|
|
subseg_set (sec, 0);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
sec = subseg_force_new (name, 0);
|
|
|
|
|
|
|
|
bed = get_elf_backend_data (stdoutput);
|
|
|
|
ssect = (*bed->get_sec_type_attr) (stdoutput, sec);
|
|
|
|
|
|
|
|
if (ssect != NULL)
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
bool override = false;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
if (type == SHT_NULL)
|
|
|
|
type = ssect->type;
|
|
|
|
else if (type != ssect->type)
|
|
|
|
{
|
|
|
|
if (old_sec == NULL
|
2014-09-12 22:14:23 +00:00
|
|
|
/* Some older versions of gcc will emit
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
.section .init_array,"aw",@progbits
|
|
|
|
|
|
|
|
for __attribute__ ((section (".init_array"))).
|
|
|
|
"@progbits" is incorrect. Also for x86-64 large bss
|
2014-09-12 22:14:23 +00:00
|
|
|
sections, some older versions of gcc will emit
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
.section .lbss,"aw",@progbits
|
|
|
|
|
|
|
|
"@progbits" is incorrect. */
|
|
|
|
#ifdef TC_I386
|
|
|
|
&& (bed->s->arch_size != 64
|
|
|
|
|| !(ssect->attr & SHF_X86_64_LARGE))
|
|
|
|
#endif
|
|
|
|
&& ssect->type != SHT_INIT_ARRAY
|
|
|
|
&& ssect->type != SHT_FINI_ARRAY
|
|
|
|
&& ssect->type != SHT_PREINIT_ARRAY)
|
|
|
|
{
|
|
|
|
/* We allow to specify any type for a .note section. */
|
2017-04-10 11:32:00 +00:00
|
|
|
if (ssect->type != SHT_NOTE
|
|
|
|
/* Processor and application defined types are allowed too. */
|
|
|
|
&& type < SHT_LOPROC)
|
2012-03-26 19:18:29 +00:00
|
|
|
as_warn (_("setting incorrect section type for %s"),
|
|
|
|
name);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_warn (_("ignoring incorrect section type for %s"),
|
|
|
|
name);
|
|
|
|
type = ssect->type;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (old_sec == NULL && ((attr & ~(SHF_LINK_ORDER
|
|
|
|
| SHF_MASKOS
|
|
|
|
| SHF_MASKPROC))
|
2017-04-10 11:32:00 +00:00
|
|
|
& ~ssect->attr) != 0)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Strip SHF_GNU_RETAIN. */
|
|
|
|
bfd_vma generic_attr = attr;
|
|
|
|
if (elf_tdata (stdoutput)->has_gnu_osabi)
|
|
|
|
generic_attr &= ~SHF_GNU_RETAIN;
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
/* As a GNU extension, we permit a .note section to be
|
|
|
|
allocatable. If the linker sees an allocatable .note
|
|
|
|
section, it will create a PT_NOTE segment in the output
|
|
|
|
file. We also allow "x" for .note.GNU-stack. */
|
|
|
|
if (ssect->type == SHT_NOTE
|
2022-10-27 18:45:45 +00:00
|
|
|
&& (generic_attr == SHF_ALLOC
|
|
|
|
|| generic_attr == SHF_EXECINSTR))
|
2012-03-26 19:18:29 +00:00
|
|
|
;
|
|
|
|
/* Allow different SHF_MERGE and SHF_STRINGS if we have
|
|
|
|
something like .rodata.str. */
|
|
|
|
else if (ssect->suffix_length == -2
|
|
|
|
&& name[ssect->prefix_length] == '.'
|
2022-10-27 18:45:45 +00:00
|
|
|
&& (generic_attr
|
2012-03-26 19:18:29 +00:00
|
|
|
& ~ssect->attr
|
|
|
|
& ~SHF_MERGE
|
|
|
|
& ~SHF_STRINGS) == 0)
|
|
|
|
;
|
|
|
|
/* .interp, .strtab and .symtab can have SHF_ALLOC. */
|
2022-10-27 18:45:45 +00:00
|
|
|
else if (generic_attr == SHF_ALLOC
|
2012-03-26 19:18:29 +00:00
|
|
|
&& (strcmp (name, ".interp") == 0
|
|
|
|
|| strcmp (name, ".strtab") == 0
|
|
|
|
|| strcmp (name, ".symtab") == 0))
|
2022-10-27 18:45:45 +00:00
|
|
|
override = true;
|
2012-03-26 19:18:29 +00:00
|
|
|
/* .note.GNU-stack can have SHF_EXECINSTR. */
|
2022-10-27 18:45:45 +00:00
|
|
|
else if (generic_attr == SHF_EXECINSTR
|
2012-03-26 19:18:29 +00:00
|
|
|
&& strcmp (name, ".note.GNU-stack") == 0)
|
2022-10-27 18:45:45 +00:00
|
|
|
override = true;
|
2012-03-26 19:18:29 +00:00
|
|
|
#ifdef TC_ALPHA
|
|
|
|
/* A section on Alpha may have SHF_ALPHA_GPREL. */
|
2022-10-27 18:45:45 +00:00
|
|
|
else if ((generic_attr & ~ssect->attr) == SHF_ALPHA_GPREL)
|
|
|
|
override = true;
|
2014-09-12 22:14:23 +00:00
|
|
|
#endif
|
|
|
|
#ifdef TC_RX
|
2022-10-27 18:45:45 +00:00
|
|
|
else if (generic_attr == (SHF_EXECINSTR | SHF_WRITE | SHF_ALLOC)
|
2014-09-12 22:14:23 +00:00
|
|
|
&& (ssect->type == SHT_INIT_ARRAY
|
|
|
|
|| ssect->type == SHT_FINI_ARRAY
|
|
|
|
|| ssect->type == SHT_PREINIT_ARRAY))
|
|
|
|
/* RX init/fini arrays can and should have the "awx" attributes set. */
|
|
|
|
;
|
2012-03-26 19:18:29 +00:00
|
|
|
#endif
|
|
|
|
else
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
if (match_p->group_name == NULL)
|
2012-03-26 19:18:29 +00:00
|
|
|
as_warn (_("setting incorrect section attributes for %s"),
|
|
|
|
name);
|
2022-10-27 18:45:45 +00:00
|
|
|
override = true;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
}
|
2017-04-10 11:32:00 +00:00
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
if (!override && old_sec == NULL)
|
|
|
|
attr |= ssect->attr;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Convert ELF type and flags to BFD flags. */
|
|
|
|
flags = (SEC_RELOC
|
|
|
|
| ((attr & SHF_WRITE) ? 0 : SEC_READONLY)
|
|
|
|
| ((attr & SHF_ALLOC) ? SEC_ALLOC : 0)
|
|
|
|
| (((attr & SHF_ALLOC) && type != SHT_NOBITS) ? SEC_LOAD : 0)
|
|
|
|
| ((attr & SHF_EXECINSTR) ? SEC_CODE : 0)
|
|
|
|
| ((attr & SHF_MERGE) ? SEC_MERGE : 0)
|
|
|
|
| ((attr & SHF_STRINGS) ? SEC_STRINGS : 0)
|
2014-09-12 22:14:23 +00:00
|
|
|
| ((attr & SHF_EXCLUDE) ? SEC_EXCLUDE: 0)
|
2012-03-26 19:18:29 +00:00
|
|
|
| ((attr & SHF_TLS) ? SEC_THREAD_LOCAL : 0));
|
|
|
|
#ifdef md_elf_section_flags
|
|
|
|
flags = md_elf_section_flags (flags, attr, type);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (linkonce)
|
|
|
|
flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
/* PR 28054: Set the SEC_ELF_OCTETS flag for debugging sections.
|
|
|
|
Based on the code in bfd/elf.c:_bfd_elf_make_section_from_shdr().
|
|
|
|
|
|
|
|
FIXME: We do not set the SEC_DEBUGGING flag because that causes
|
|
|
|
problems for the FT32 and MSP430 targets. Investigate and fix. */
|
|
|
|
if ((flags & SEC_ALLOC) == 0 && name [0] == '.')
|
|
|
|
{
|
|
|
|
if ( startswith (name, ".debug")
|
|
|
|
|| startswith (name, ".zdebug")
|
|
|
|
|| startswith (name, ".gnu.debuglto_.debug_")
|
|
|
|
|| startswith (name, ".gnu.linkonce.wi.")
|
|
|
|
|| startswith (name, GNU_BUILD_ATTRS_SECTION_NAME)
|
|
|
|
|| startswith (name, ".note.gnu"))
|
|
|
|
flags |= SEC_ELF_OCTETS;
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
if (old_sec == NULL)
|
|
|
|
{
|
|
|
|
symbolS *secsym;
|
|
|
|
|
|
|
|
if (type == SHT_NULL)
|
|
|
|
type = bfd_elf_get_default_section_type (flags);
|
|
|
|
elf_section_type (sec) = type;
|
|
|
|
elf_section_flags (sec) = attr;
|
2022-10-27 18:45:45 +00:00
|
|
|
elf_section_data (sec)->this_hdr.sh_info = match_p->sh_info;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
/* Prevent SEC_HAS_CONTENTS from being inadvertently set. */
|
|
|
|
if (type == SHT_NOBITS)
|
|
|
|
seg_info (sec)->bss = 1;
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Set the section ID and flags. */
|
|
|
|
sec->section_id = match_p->section_id;
|
|
|
|
flags |= match_p->flags;
|
|
|
|
|
|
|
|
/* Set the linked-to symbol name. */
|
|
|
|
sec->map_head.linked_to_symbol_name
|
|
|
|
= match_p->linked_to_symbol_name;
|
|
|
|
|
|
|
|
bfd_set_section_flags (sec, flags);
|
2012-03-26 19:18:29 +00:00
|
|
|
if (flags & SEC_MERGE)
|
|
|
|
sec->entsize = entsize;
|
2022-10-27 18:45:45 +00:00
|
|
|
elf_group_name (sec) = match_p->group_name;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
/* Add a symbol for this section to the symbol table. */
|
|
|
|
secsym = symbol_find (name);
|
|
|
|
if (secsym != NULL)
|
2022-10-27 18:45:45 +00:00
|
|
|
{
|
|
|
|
/* We could be repurposing an undefined symbol here: make sure we
|
|
|
|
reset sy_value to look like other section symbols in order to avoid
|
|
|
|
trying to incorrectly resolve this section symbol later on. */
|
|
|
|
static const expressionS exp = { .X_op = O_constant };
|
|
|
|
symbol_set_value_expression (secsym, &exp);
|
|
|
|
symbol_set_bfdsym (secsym, sec->symbol);
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
else
|
|
|
|
symbol_table_insert (section_symbol (sec));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (type != SHT_NULL
|
|
|
|
&& (unsigned) type != elf_section_type (old_sec))
|
2022-10-27 18:45:45 +00:00
|
|
|
{
|
|
|
|
if (ssect != NULL)
|
|
|
|
/* This is a special section with known type. User
|
|
|
|
assembly might get the section type wrong; Even high
|
|
|
|
profile projects like glibc have done so in the past.
|
|
|
|
So don't error in this case. */
|
|
|
|
as_warn (_("ignoring changed section type for %s"), name);
|
|
|
|
else
|
|
|
|
/* Do error when assembly isn't self-consistent. */
|
|
|
|
as_bad (_("changed section type for %s"), name);
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
if (attr != 0)
|
|
|
|
{
|
|
|
|
/* If section attributes are specified the second time we see a
|
|
|
|
particular section, then check that they are the same as we
|
|
|
|
saw the first time. */
|
|
|
|
if (((old_sec->flags ^ flags)
|
|
|
|
& (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE
|
|
|
|
| SEC_EXCLUDE | SEC_SORT_ENTRIES | SEC_MERGE | SEC_STRINGS
|
|
|
|
| SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD
|
|
|
|
| SEC_THREAD_LOCAL)))
|
2022-10-27 18:45:45 +00:00
|
|
|
{
|
|
|
|
if (ssect != NULL)
|
|
|
|
as_warn (_("ignoring changed section attributes for %s"), name);
|
|
|
|
else
|
|
|
|
as_bad (_("changed section attributes for %s"), name);
|
|
|
|
}
|
2017-04-10 11:32:00 +00:00
|
|
|
else
|
|
|
|
/* FIXME: Maybe we should consider removing a previously set
|
2022-10-27 18:45:45 +00:00
|
|
|
processor or application specific attribute as suspicious? */
|
2017-04-10 11:32:00 +00:00
|
|
|
elf_section_flags (sec) = attr;
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
if ((flags & SEC_MERGE) && old_sec->entsize != (unsigned) entsize)
|
2022-10-27 18:45:45 +00:00
|
|
|
as_bad (_("changed section entity size for %s"), name);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
static bfd_vma
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_parse_section_letters (char *str, size_t len,
|
|
|
|
bool *is_clone, bfd_vma *gnu_attr)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
bfd_vma attr = 0;
|
2022-10-27 18:45:45 +00:00
|
|
|
*is_clone = false;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
while (len > 0)
|
|
|
|
{
|
|
|
|
switch (*str)
|
|
|
|
{
|
|
|
|
case 'a':
|
|
|
|
attr |= SHF_ALLOC;
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Compatibility. */
|
|
|
|
if (len > 1 && str[1] == 'm')
|
|
|
|
{
|
|
|
|
attr |= SHF_MERGE;
|
|
|
|
str++, len--;
|
|
|
|
if (len > 1 && str[1] == 's')
|
|
|
|
{
|
|
|
|
attr |= SHF_STRINGS;
|
|
|
|
str++, len--;
|
|
|
|
}
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
break;
|
2014-09-12 22:14:23 +00:00
|
|
|
case 'e':
|
|
|
|
attr |= SHF_EXCLUDE;
|
|
|
|
break;
|
2022-10-27 18:45:45 +00:00
|
|
|
case 'o':
|
|
|
|
attr |= SHF_LINK_ORDER;
|
|
|
|
break;
|
2012-03-26 19:18:29 +00:00
|
|
|
case 'w':
|
|
|
|
attr |= SHF_WRITE;
|
|
|
|
break;
|
|
|
|
case 'x':
|
|
|
|
attr |= SHF_EXECINSTR;
|
|
|
|
break;
|
|
|
|
case 'M':
|
|
|
|
attr |= SHF_MERGE;
|
|
|
|
break;
|
|
|
|
case 'S':
|
|
|
|
attr |= SHF_STRINGS;
|
|
|
|
break;
|
|
|
|
case 'G':
|
|
|
|
attr |= SHF_GROUP;
|
|
|
|
break;
|
|
|
|
case 'T':
|
|
|
|
attr |= SHF_TLS;
|
|
|
|
break;
|
2017-10-07 00:16:47 +00:00
|
|
|
case 'd':
|
2022-10-27 18:45:45 +00:00
|
|
|
*gnu_attr |= SHF_GNU_MBIND;
|
|
|
|
break;
|
|
|
|
case 'R':
|
|
|
|
*gnu_attr |= SHF_GNU_RETAIN;
|
2017-10-07 00:16:47 +00:00
|
|
|
break;
|
2014-09-12 22:14:23 +00:00
|
|
|
case '?':
|
2022-10-27 18:45:45 +00:00
|
|
|
*is_clone = true;
|
2014-09-12 22:14:23 +00:00
|
|
|
break;
|
2012-03-26 19:18:29 +00:00
|
|
|
default:
|
|
|
|
{
|
2017-04-10 11:32:00 +00:00
|
|
|
const char *bad_msg = _("unrecognized .section attribute:"
|
2022-10-27 18:45:45 +00:00
|
|
|
" want a,e,o,w,x,M,S,G,T or number");
|
2012-03-26 19:18:29 +00:00
|
|
|
#ifdef md_elf_section_letter
|
|
|
|
bfd_vma md_attr = md_elf_section_letter (*str, &bad_msg);
|
2014-09-12 22:14:23 +00:00
|
|
|
if (md_attr != (bfd_vma) -1)
|
2012-03-26 19:18:29 +00:00
|
|
|
attr |= md_attr;
|
|
|
|
else
|
|
|
|
#endif
|
2017-04-10 11:32:00 +00:00
|
|
|
if (ISDIGIT (*str))
|
|
|
|
{
|
|
|
|
char * end;
|
2022-10-27 18:45:45 +00:00
|
|
|
struct elf_backend_data *bed;
|
|
|
|
bfd_vma numeric_flags = strtoul (str, &end, 0);
|
|
|
|
|
|
|
|
attr |= numeric_flags;
|
|
|
|
|
|
|
|
bed = (struct elf_backend_data *)
|
|
|
|
get_elf_backend_data (stdoutput);
|
|
|
|
|
|
|
|
if (bed->elf_osabi == ELFOSABI_NONE
|
|
|
|
|| bed->elf_osabi == ELFOSABI_STANDALONE
|
|
|
|
|| bed->elf_osabi == ELFOSABI_GNU
|
|
|
|
|| bed->elf_osabi == ELFOSABI_FREEBSD)
|
|
|
|
{
|
|
|
|
/* Add flags in the SHF_MASKOS range to gnu_attr for
|
|
|
|
OSABIs that support those flags.
|
|
|
|
Also adding the flags for ELFOSABI_{NONE,STANDALONE}
|
|
|
|
allows them to be validated later in obj_elf_section.
|
|
|
|
We can't just always set these bits in gnu_attr for
|
|
|
|
all OSABIs, since Binutils does not recognize all
|
|
|
|
SHF_MASKOS bits for non-GNU OSABIs. It's therefore
|
|
|
|
possible that numeric flags are being used to set bits
|
|
|
|
in the SHF_MASKOS range for those targets, and we
|
|
|
|
don't want assembly to fail in those situations. */
|
|
|
|
*gnu_attr |= (numeric_flags & SHF_MASKOS);
|
|
|
|
}
|
2017-04-10 11:32:00 +00:00
|
|
|
|
|
|
|
/* Update str and len, allowing for the fact that
|
|
|
|
we will execute str++ and len-- below. */
|
|
|
|
end --;
|
|
|
|
len -= (end - str);
|
|
|
|
str = end;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
as_fatal ("%s", bad_msg);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
str++, len--;
|
|
|
|
}
|
|
|
|
|
|
|
|
return attr;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_type (char *str, size_t len, bool warn)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 8 && startswith (str, "progbits"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHT_PROGBITS;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 6 && startswith (str, "nobits"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHT_NOBITS;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 4 && startswith (str, "note"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHT_NOTE;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 10 && startswith (str, "init_array"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHT_INIT_ARRAY;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 10 && startswith (str, "fini_array"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHT_FINI_ARRAY;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 13 && startswith (str, "preinit_array"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHT_PREINIT_ARRAY;
|
|
|
|
|
|
|
|
#ifdef md_elf_section_type
|
|
|
|
{
|
|
|
|
int md_type = md_elf_section_type (str, len);
|
|
|
|
if (md_type >= 0)
|
|
|
|
return md_type;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2017-04-10 11:32:00 +00:00
|
|
|
if (ISDIGIT (*str))
|
|
|
|
{
|
|
|
|
char * end;
|
|
|
|
int type = strtoul (str, & end, 0);
|
|
|
|
|
|
|
|
if (warn && (size_t) (end - str) != len)
|
|
|
|
as_warn (_("extraneous characters at end of numeric section type"));
|
|
|
|
|
|
|
|
return type;
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
if (warn)
|
|
|
|
as_warn (_("unrecognized section type"));
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bfd_vma
|
|
|
|
obj_elf_section_word (char *str, size_t len, int *type)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 5 && startswith (str, "write"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHF_WRITE;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 5 && startswith (str, "alloc"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHF_ALLOC;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 9 && startswith (str, "execinstr"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHF_EXECINSTR;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 7 && startswith (str, "exclude"))
|
2014-09-12 22:14:23 +00:00
|
|
|
return SHF_EXCLUDE;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (len == 3 && startswith (str, "tls"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return SHF_TLS;
|
|
|
|
|
|
|
|
#ifdef md_elf_section_word
|
|
|
|
{
|
|
|
|
bfd_vma md_attr = md_elf_section_word (str, len);
|
|
|
|
if (md_attr > 0)
|
|
|
|
return md_attr;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
ret = obj_elf_section_type (str, len, false);
|
2012-03-26 19:18:29 +00:00
|
|
|
if (ret != 0)
|
|
|
|
*type = ret;
|
|
|
|
else
|
|
|
|
as_warn (_("unrecognized section attribute"));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get name of section. */
|
2017-04-10 11:32:00 +00:00
|
|
|
const char *
|
2012-03-26 19:18:29 +00:00
|
|
|
obj_elf_section_name (void)
|
|
|
|
{
|
|
|
|
char *name;
|
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (*input_line_pointer == '"')
|
|
|
|
{
|
|
|
|
int dummy;
|
|
|
|
|
|
|
|
name = demand_copy_C_string (&dummy);
|
|
|
|
if (name == NULL)
|
|
|
|
{
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
char *end = input_line_pointer;
|
|
|
|
|
|
|
|
while (0 == strchr ("\n\t,; ", *end))
|
|
|
|
end++;
|
|
|
|
if (end == input_line_pointer)
|
|
|
|
{
|
|
|
|
as_bad (_("missing name"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obstack_grow0 (¬es, input_line_pointer, end - input_line_pointer);
|
|
|
|
name = obstack_base (¬es);
|
2017-04-10 11:32:00 +00:00
|
|
|
|
|
|
|
while (flag_sectname_subst)
|
|
|
|
{
|
|
|
|
char *subst = strchr (name, '%');
|
|
|
|
if (subst && subst[1] == 'S')
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
size_t head = subst - name;
|
|
|
|
size_t tail = strlen (subst + 2) + 1;
|
|
|
|
size_t slen = strlen (now_seg->name);
|
|
|
|
|
|
|
|
if (slen > 2)
|
|
|
|
{
|
|
|
|
obstack_blank (¬es, slen - 2);
|
|
|
|
name = obstack_base (¬es);
|
|
|
|
}
|
|
|
|
memmove (name + head + slen, name + head + 2, tail);
|
|
|
|
memcpy (name + head, now_seg->name, slen);
|
2017-04-10 11:32:00 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obstack_finish (¬es);
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
#ifdef tc_canonicalize_section_name
|
|
|
|
name = tc_canonicalize_section_name (name);
|
|
|
|
#endif
|
|
|
|
input_line_pointer = end;
|
|
|
|
}
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
return name;
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
static void
|
|
|
|
obj_elf_attach_to_group (int dummy ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
const char * gname = obj_elf_section_name ();
|
|
|
|
|
|
|
|
if (gname == NULL)
|
|
|
|
{
|
|
|
|
as_warn (_("group name not parseable"));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (elf_group_name (now_seg))
|
|
|
|
{
|
|
|
|
as_warn (_("section %s already has a group (%s)"),
|
|
|
|
bfd_section_name (now_seg), elf_group_name (now_seg));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
elf_group_name (now_seg) = gname;
|
|
|
|
elf_section_flags (now_seg) |= SHF_GROUP;
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
void
|
|
|
|
obj_elf_section (int push)
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
const char *name;
|
2017-04-10 11:32:00 +00:00
|
|
|
char *beg;
|
2012-03-26 19:18:29 +00:00
|
|
|
int type, dummy;
|
|
|
|
bfd_vma attr;
|
2022-10-27 18:45:45 +00:00
|
|
|
bfd_vma gnu_attr;
|
2012-03-26 19:18:29 +00:00
|
|
|
int entsize;
|
|
|
|
int linkonce;
|
|
|
|
subsegT new_subsection = -1;
|
2022-10-27 18:45:45 +00:00
|
|
|
struct elf_section_match match;
|
|
|
|
unsigned long linked_to_section_index = -1UL;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
if (flag_mri)
|
|
|
|
{
|
|
|
|
char mri_type;
|
|
|
|
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_change_hook ();
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
s_mri_sect (&mri_type);
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
name = obj_elf_section_name ();
|
|
|
|
if (name == NULL)
|
|
|
|
return;
|
2022-10-27 18:45:45 +00:00
|
|
|
|
|
|
|
memset (&match, 0, sizeof (match));
|
|
|
|
|
|
|
|
symbolS * sym;
|
|
|
|
if ((sym = symbol_find (name)) != NULL
|
|
|
|
&& ! symbol_section_p (sym)
|
|
|
|
&& S_IS_DEFINED (sym)
|
|
|
|
&& ! S_IS_VOLATILE (sym)
|
|
|
|
&& ! S_CAN_BE_REDEFINED (sym))
|
|
|
|
{
|
|
|
|
as_bad (_("section name '%s' already defined as another symbol"), name);
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
type = SHT_NULL;
|
|
|
|
attr = 0;
|
2022-10-27 18:45:45 +00:00
|
|
|
gnu_attr = 0;
|
2012-03-26 19:18:29 +00:00
|
|
|
entsize = 0;
|
|
|
|
linkonce = 0;
|
|
|
|
|
|
|
|
if (*input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
/* Skip the comma. */
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
|
|
|
|
if (push && ISDIGIT (*input_line_pointer))
|
|
|
|
{
|
|
|
|
/* .pushsection has an optional subsection. */
|
|
|
|
new_subsection = (subsegT) get_absolute_expression ();
|
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
|
|
|
|
/* Stop if we don't see a comma. */
|
|
|
|
if (*input_line_pointer != ',')
|
|
|
|
goto done;
|
|
|
|
|
|
|
|
/* Skip the comma. */
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
}
|
|
|
|
|
|
|
|
if (*input_line_pointer == '"')
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
bool is_clone;
|
2014-09-12 22:14:23 +00:00
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
beg = demand_copy_C_string (&dummy);
|
|
|
|
if (beg == NULL)
|
|
|
|
{
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
attr |= obj_elf_parse_section_letters (beg, strlen (beg),
|
|
|
|
&is_clone, &gnu_attr);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (*input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
char c;
|
|
|
|
char *save = input_line_pointer;
|
|
|
|
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
c = *input_line_pointer;
|
|
|
|
if (c == '"')
|
|
|
|
{
|
|
|
|
beg = demand_copy_C_string (&dummy);
|
|
|
|
if (beg == NULL)
|
|
|
|
{
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
type = obj_elf_section_type (beg, strlen (beg), true);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
else if (c == '@' || c == '%')
|
|
|
|
{
|
2017-04-10 11:32:00 +00:00
|
|
|
++input_line_pointer;
|
|
|
|
|
|
|
|
if (ISDIGIT (* input_line_pointer))
|
2022-10-27 18:45:45 +00:00
|
|
|
type = strtoul (input_line_pointer, &input_line_pointer, 0);
|
2017-04-10 11:32:00 +00:00
|
|
|
else
|
|
|
|
{
|
|
|
|
c = get_symbol_name (& beg);
|
|
|
|
(void) restore_line_pointer (c);
|
2022-10-27 18:45:45 +00:00
|
|
|
type = obj_elf_section_type (beg,
|
|
|
|
input_line_pointer - beg,
|
|
|
|
true);
|
2017-04-10 11:32:00 +00:00
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
input_line_pointer = save;
|
|
|
|
}
|
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if ((attr & SHF_MERGE) != 0 && *input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
entsize = get_absolute_expression ();
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (entsize < 0)
|
|
|
|
{
|
|
|
|
as_warn (_("invalid merge entity size"));
|
|
|
|
attr &= ~SHF_MERGE;
|
|
|
|
entsize = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if ((attr & SHF_MERGE) != 0)
|
|
|
|
{
|
|
|
|
as_warn (_("entity size for SHF_MERGE not specified"));
|
|
|
|
attr &= ~SHF_MERGE;
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if ((attr & SHF_LINK_ORDER) != 0 && *input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
/* Check for a numeric section index, rather than a symbol name. */
|
|
|
|
if (ISDIGIT (* input_line_pointer))
|
|
|
|
{
|
|
|
|
linked_to_section_index = strtoul (input_line_pointer, & input_line_pointer, 0);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
char c;
|
|
|
|
unsigned int length;
|
|
|
|
|
|
|
|
c = get_symbol_name (& beg);
|
|
|
|
(void) restore_line_pointer (c);
|
|
|
|
length = input_line_pointer - beg;
|
|
|
|
if (length)
|
|
|
|
match.linked_to_symbol_name = xmemdup0 (beg, length);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
if ((attr & SHF_GROUP) != 0 && is_clone)
|
|
|
|
{
|
|
|
|
as_warn (_("? section flag ignored with G present"));
|
2022-10-27 18:45:45 +00:00
|
|
|
is_clone = false;
|
2014-09-12 22:14:23 +00:00
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
if ((attr & SHF_GROUP) != 0 && *input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
++input_line_pointer;
|
2022-10-27 18:45:45 +00:00
|
|
|
match.group_name = obj_elf_section_name ();
|
|
|
|
if (match.group_name == NULL)
|
2012-03-26 19:18:29 +00:00
|
|
|
attr &= ~SHF_GROUP;
|
2014-09-12 22:14:23 +00:00
|
|
|
else if (*input_line_pointer == ',')
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2014-09-12 22:14:23 +00:00
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
2022-10-27 18:45:45 +00:00
|
|
|
if (startswith (input_line_pointer, "comdat"))
|
2014-09-12 22:14:23 +00:00
|
|
|
{
|
|
|
|
input_line_pointer += 6;
|
|
|
|
linkonce = 1;
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
else if (startswith (name, ".gnu.linkonce"))
|
2012-03-26 19:18:29 +00:00
|
|
|
linkonce = 1;
|
|
|
|
}
|
|
|
|
else if ((attr & SHF_GROUP) != 0)
|
|
|
|
{
|
|
|
|
as_warn (_("group name for SHF_GROUP not specified"));
|
|
|
|
attr &= ~SHF_GROUP;
|
|
|
|
}
|
2014-09-12 22:14:23 +00:00
|
|
|
|
|
|
|
if (is_clone)
|
|
|
|
{
|
|
|
|
const char *now_group = elf_group_name (now_seg);
|
|
|
|
if (now_group != NULL)
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
match.group_name = now_group;
|
2014-09-12 22:14:23 +00:00
|
|
|
linkonce = (now_seg->flags & SEC_LINK_ONCE) != 0;
|
|
|
|
}
|
|
|
|
}
|
2017-10-07 00:16:47 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if ((gnu_attr & SHF_GNU_MBIND) != 0 && *input_line_pointer == ',')
|
2017-10-07 00:16:47 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
char *save = input_line_pointer;
|
2017-10-07 00:16:47 +00:00
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (ISDIGIT (* input_line_pointer))
|
|
|
|
{
|
|
|
|
char *t = input_line_pointer;
|
2022-10-27 18:45:45 +00:00
|
|
|
match.sh_info = strtoul (input_line_pointer,
|
|
|
|
&input_line_pointer, 0);
|
|
|
|
if (match.sh_info == (unsigned int) -1)
|
2017-10-07 00:16:47 +00:00
|
|
|
{
|
|
|
|
as_warn (_("unsupported mbind section info: %s"), t);
|
2022-10-27 18:45:45 +00:00
|
|
|
match.sh_info = 0;
|
2017-10-07 00:16:47 +00:00
|
|
|
}
|
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
else
|
|
|
|
input_line_pointer = save;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((gnu_attr & SHF_GNU_RETAIN) != 0)
|
|
|
|
match.sh_flags |= SHF_GNU_RETAIN;
|
|
|
|
|
|
|
|
if (*input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
char *save = input_line_pointer;
|
|
|
|
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (startswith (input_line_pointer, "unique"))
|
|
|
|
{
|
|
|
|
input_line_pointer += 6;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (*input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (ISDIGIT (* input_line_pointer))
|
|
|
|
{
|
|
|
|
bfd_vma id;
|
|
|
|
bool overflow;
|
|
|
|
char *t = input_line_pointer;
|
|
|
|
if (sizeof (bfd_vma) <= sizeof (unsigned long))
|
|
|
|
{
|
|
|
|
errno = 0;
|
|
|
|
id = strtoul (input_line_pointer,
|
|
|
|
&input_line_pointer, 0);
|
|
|
|
overflow = (id == (unsigned long) -1
|
|
|
|
&& errno == ERANGE);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
id = bfd_scan_vma
|
|
|
|
(input_line_pointer,
|
|
|
|
(const char **) &input_line_pointer, 0);
|
|
|
|
overflow = id == ~(bfd_vma) 0;
|
|
|
|
}
|
|
|
|
if (overflow || id > (unsigned int) -1)
|
|
|
|
{
|
|
|
|
char *linefeed, saved_char = 0;
|
|
|
|
if ((linefeed = strchr (t, '\n')) != NULL)
|
|
|
|
{
|
|
|
|
saved_char = *linefeed;
|
|
|
|
*linefeed = '\0';
|
|
|
|
}
|
|
|
|
as_bad (_("unsupported section id: %s"), t);
|
|
|
|
if (saved_char)
|
|
|
|
*linefeed = saved_char;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
match.section_id = id;
|
|
|
|
match.flags |= SEC_ASSEMBLER_SECTION_ID;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
input_line_pointer = save;
|
2017-10-07 00:16:47 +00:00
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
do
|
|
|
|
{
|
|
|
|
char c;
|
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (*input_line_pointer != '#')
|
|
|
|
{
|
|
|
|
as_bad (_("character following name is not '#'"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
2017-04-10 11:32:00 +00:00
|
|
|
++input_line_pointer;
|
|
|
|
c = get_symbol_name (& beg);
|
|
|
|
(void) restore_line_pointer (c);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
attr |= obj_elf_section_word (beg, input_line_pointer - beg,
|
|
|
|
&type);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
}
|
|
|
|
while (*input_line_pointer++ == ',');
|
|
|
|
--input_line_pointer;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
done:
|
2012-03-26 19:18:29 +00:00
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if ((gnu_attr & (SHF_GNU_MBIND | SHF_GNU_RETAIN)) != 0)
|
|
|
|
{
|
|
|
|
const struct elf_backend_data *bed;
|
|
|
|
bool mbind_p = (gnu_attr & SHF_GNU_MBIND) != 0;
|
|
|
|
|
|
|
|
if (mbind_p && (attr & SHF_ALLOC) == 0)
|
|
|
|
as_bad (_("SHF_ALLOC isn't set for GNU_MBIND section: %s"), name);
|
|
|
|
|
|
|
|
bed = get_elf_backend_data (stdoutput);
|
|
|
|
|
|
|
|
if (bed->elf_osabi != ELFOSABI_GNU
|
|
|
|
&& bed->elf_osabi != ELFOSABI_FREEBSD
|
|
|
|
&& bed->elf_osabi != ELFOSABI_NONE)
|
|
|
|
as_bad (_("%s section is supported only by GNU and FreeBSD targets"),
|
|
|
|
mbind_p ? "GNU_MBIND" : "GNU_RETAIN");
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (mbind_p)
|
|
|
|
elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_mbind;
|
|
|
|
if ((gnu_attr & SHF_GNU_RETAIN) != 0)
|
|
|
|
elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_retain;
|
|
|
|
|
|
|
|
attr |= gnu_attr;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
obj_elf_change_section (name, type, attr, entsize, &match, linkonce,
|
|
|
|
push);
|
|
|
|
|
|
|
|
if (linked_to_section_index != -1UL)
|
|
|
|
{
|
|
|
|
elf_section_flags (now_seg) |= SHF_LINK_ORDER;
|
|
|
|
elf_section_data (now_seg)->this_hdr.sh_link = linked_to_section_index;
|
|
|
|
/* FIXME: Should we perform some sanity checking on the section index ? */
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
if (push && new_subsection != -1)
|
|
|
|
subseg_set (now_seg, new_subsection);
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Change to the .bss section. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_bss (int i ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
int temp;
|
|
|
|
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
|
|
|
obj_elf_section_change_hook ();
|
|
|
|
|
|
|
|
temp = get_absolute_expression ();
|
|
|
|
subseg_set (bss_section, (subsegT) temp);
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
/* Change to the .data section. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_data (int i)
|
|
|
|
{
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_change_hook ();
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
s_data (i);
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Change to the .text section. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_text (int i)
|
|
|
|
{
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_change_hook ();
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
s_text (i);
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Change to the *ABS* section. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_struct (int i)
|
|
|
|
{
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_change_hook ();
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
s_struct (i);
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_subsection (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
int temp;
|
|
|
|
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_change_hook ();
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
temp = get_absolute_expression ();
|
|
|
|
subseg_set (now_seg, (subsegT) temp);
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This can be called from the processor backends if they change
|
|
|
|
sections. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_section_change_hook (void)
|
|
|
|
{
|
|
|
|
previous_section = now_seg;
|
|
|
|
previous_subsection = now_subseg;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_previous (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
segT new_section;
|
|
|
|
int new_subsection;
|
|
|
|
|
|
|
|
if (previous_section == 0)
|
|
|
|
{
|
|
|
|
as_warn (_(".previous without corresponding .section; ignored"));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
|
|
|
new_section = previous_section;
|
|
|
|
new_subsection = previous_subsection;
|
2022-10-27 18:45:45 +00:00
|
|
|
obj_elf_section_change_hook ();
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
subseg_set (new_section, new_subsection);
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_popsection (int xxx ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
struct section_stack *top = section_stack;
|
|
|
|
|
|
|
|
if (top == NULL)
|
|
|
|
{
|
|
|
|
as_warn (_(".popsection without corresponding .pushsection; ignored"));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
|
|
|
section_stack = top->next;
|
|
|
|
previous_section = top->prev_seg;
|
|
|
|
previous_subsection = top->prev_subseg;
|
|
|
|
subseg_set (top->seg, top->subseg);
|
|
|
|
free (top);
|
|
|
|
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_line (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
/* Assume delimiter is part of expression. BSD4.2 as fails with
|
|
|
|
delightful bug, so we are not being incompatible here. */
|
|
|
|
new_logical_line (NULL, get_absolute_expression ());
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
static struct elf_versioned_name_list *
|
|
|
|
obj_elf_find_and_add_versioned_name (const char *version_name,
|
|
|
|
const char *sym_name,
|
|
|
|
const char *ver,
|
|
|
|
struct elf_obj_sy *sy_obj)
|
|
|
|
{
|
|
|
|
struct elf_versioned_name_list *versioned_name;
|
|
|
|
const char *p;
|
|
|
|
|
|
|
|
for (p = ver + 1; *p == ELF_VER_CHR; p++)
|
|
|
|
;
|
|
|
|
|
|
|
|
/* NB: Since some tests in ld/testsuite/ld-elfvers have no version
|
|
|
|
names, we have to disable this. */
|
|
|
|
if (0 && *p == '\0')
|
|
|
|
{
|
|
|
|
as_bad (_("missing version name in `%s' for symbol `%s'"),
|
|
|
|
version_name, sym_name);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
versioned_name = sy_obj->versioned_name;
|
|
|
|
|
|
|
|
switch (p - ver)
|
|
|
|
{
|
|
|
|
case 1:
|
|
|
|
case 2:
|
|
|
|
break;
|
|
|
|
case 3:
|
|
|
|
if (sy_obj->rename)
|
|
|
|
{
|
|
|
|
if (strcmp (versioned_name->name, version_name) == 0)
|
|
|
|
return versioned_name;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
as_bad (_("only one version name with `@@@' is allowed "
|
|
|
|
"for symbol `%s'"), sym_name);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
sy_obj->rename = true;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
as_bad (_("invalid version name '%s' for symbol `%s'"),
|
|
|
|
version_name, sym_name);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (;
|
|
|
|
versioned_name != NULL;
|
|
|
|
versioned_name = versioned_name->next)
|
|
|
|
if (strcmp (versioned_name->name, version_name) == 0)
|
|
|
|
return versioned_name;
|
|
|
|
|
|
|
|
/* Add this versioned name to the head of the list, */
|
|
|
|
versioned_name = (struct elf_versioned_name_list *)
|
|
|
|
xmalloc (sizeof (*versioned_name));
|
|
|
|
versioned_name->name = xstrdup (version_name);
|
|
|
|
versioned_name->next = sy_obj->versioned_name;
|
|
|
|
sy_obj->versioned_name = versioned_name;
|
|
|
|
|
|
|
|
return versioned_name;
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
/* This handles the .symver pseudo-op, which is used to specify a
|
|
|
|
symbol version. The syntax is ``.symver NAME,SYMVERNAME''.
|
|
|
|
SYMVERNAME may contain ELF_VER_CHR ('@') characters. This
|
|
|
|
pseudo-op causes the assembler to emit a symbol named SYMVERNAME
|
|
|
|
with the same value as the symbol NAME. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_symver (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
char *name;
|
2022-10-27 18:45:45 +00:00
|
|
|
const char *sym_name;
|
2012-03-26 19:18:29 +00:00
|
|
|
char c;
|
|
|
|
char old_lexat;
|
|
|
|
symbolS *sym;
|
2022-10-27 18:45:45 +00:00
|
|
|
struct elf_obj_sy *sy_obj;
|
|
|
|
char *p;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
sym = get_sym_from_input_line_and_check ();
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
if (*input_line_pointer != ',')
|
|
|
|
{
|
|
|
|
as_bad (_("expected comma after name in .symver"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
|
|
|
|
/* Temporarily include '@' in symbol names. */
|
|
|
|
old_lexat = lex_type[(unsigned char) '@'];
|
|
|
|
lex_type[(unsigned char) '@'] |= LEX_NAME;
|
2017-04-10 11:32:00 +00:00
|
|
|
c = get_symbol_name (& name);
|
2012-03-26 19:18:29 +00:00
|
|
|
lex_type[(unsigned char) '@'] = old_lexat;
|
2022-10-27 18:45:45 +00:00
|
|
|
sym_name = S_GET_NAME (sym);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2017-10-07 00:16:47 +00:00
|
|
|
if (S_IS_COMMON (sym))
|
|
|
|
{
|
|
|
|
as_bad (_("`%s' can't be versioned to common symbol '%s'"),
|
2022-10-27 18:45:45 +00:00
|
|
|
name, sym_name);
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
p = strchr (name, ELF_VER_CHR);
|
|
|
|
if (p == NULL)
|
|
|
|
{
|
|
|
|
as_bad (_("missing version name in `%s' for symbol `%s'"),
|
|
|
|
name, sym_name);
|
2017-10-07 00:16:47 +00:00
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
sy_obj = symbol_get_obj (sym);
|
|
|
|
if (obj_elf_find_and_add_versioned_name (name, sym_name,
|
|
|
|
p, sy_obj) == NULL)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
sy_obj->bad_version = true;
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
(void) restore_line_pointer (c);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (*input_line_pointer == ',')
|
|
|
|
{
|
|
|
|
char *save = input_line_pointer;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (startswith (input_line_pointer, "local"))
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
input_line_pointer += 5;
|
|
|
|
sy_obj->visibility = visibility_local;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
else if (startswith (input_line_pointer, "hidden"))
|
2021-03-21 00:09:18 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
input_line_pointer += 6;
|
|
|
|
sy_obj->visibility = visibility_hidden;
|
2021-03-21 00:09:18 +00:00
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
else if (startswith (input_line_pointer, "remove"))
|
|
|
|
{
|
|
|
|
input_line_pointer += 6;
|
|
|
|
sy_obj->visibility = visibility_remove;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
input_line_pointer = save;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This handles the .vtable_inherit pseudo-op, which is used to indicate
|
|
|
|
to the linker the hierarchy in which a particular table resides. The
|
|
|
|
syntax is ".vtable_inherit CHILDNAME, PARENTNAME". */
|
|
|
|
|
|
|
|
struct fix *
|
2018-12-28 15:25:28 +00:00
|
|
|
obj_elf_get_vtable_inherit (void)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
char *cname, *pname;
|
|
|
|
symbolS *csym, *psym;
|
|
|
|
char c, bad = 0;
|
|
|
|
|
|
|
|
if (*input_line_pointer == '#')
|
|
|
|
++input_line_pointer;
|
|
|
|
|
2017-04-10 11:32:00 +00:00
|
|
|
c = get_symbol_name (& cname);
|
2012-03-26 19:18:29 +00:00
|
|
|
csym = symbol_find (cname);
|
|
|
|
|
|
|
|
/* GCFIXME: should check that we don't have two .vtable_inherits for
|
|
|
|
the same child symbol. Also, we can currently only do this if the
|
|
|
|
child symbol is already exists and is placed in a fragment. */
|
|
|
|
|
|
|
|
if (csym == NULL || symbol_get_frag (csym) == NULL)
|
|
|
|
{
|
|
|
|
as_bad (_("expected `%s' to have already been set for .vtable_inherit"),
|
|
|
|
cname);
|
|
|
|
bad = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
*input_line_pointer = c;
|
|
|
|
|
2017-04-10 11:32:00 +00:00
|
|
|
SKIP_WHITESPACE_AFTER_NAME ();
|
2012-03-26 19:18:29 +00:00
|
|
|
if (*input_line_pointer != ',')
|
|
|
|
{
|
|
|
|
as_bad (_("expected comma after name in .vtable_inherit"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
++input_line_pointer;
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
|
|
|
|
if (*input_line_pointer == '#')
|
|
|
|
++input_line_pointer;
|
|
|
|
|
|
|
|
if (input_line_pointer[0] == '0'
|
|
|
|
&& (input_line_pointer[1] == '\0'
|
|
|
|
|| ISSPACE (input_line_pointer[1])))
|
|
|
|
{
|
|
|
|
psym = section_symbol (absolute_section);
|
|
|
|
++input_line_pointer;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2017-04-10 11:32:00 +00:00
|
|
|
c = get_symbol_name (& pname);
|
2012-03-26 19:18:29 +00:00
|
|
|
psym = symbol_find_or_make (pname);
|
2017-04-10 11:32:00 +00:00
|
|
|
restore_line_pointer (c);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
|
|
|
|
if (bad)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
gas_assert (symbol_get_value_expression (csym)->X_op == O_constant);
|
|
|
|
return fix_new (symbol_get_frag (csym),
|
|
|
|
symbol_get_value_expression (csym)->X_add_number,
|
|
|
|
0, psym, 0, 0, BFD_RELOC_VTABLE_INHERIT);
|
|
|
|
}
|
|
|
|
|
2018-12-28 15:25:28 +00:00
|
|
|
/* This is a version of obj_elf_get_vtable_inherit() that is
|
|
|
|
suitable for use in struct _pseudo_type tables. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_vtable_inherit (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
(void) obj_elf_get_vtable_inherit ();
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
/* This handles the .vtable_entry pseudo-op, which is used to indicate
|
|
|
|
to the linker that a vtable slot was used. The syntax is
|
|
|
|
".vtable_entry tablename, offset". */
|
|
|
|
|
|
|
|
struct fix *
|
2018-12-28 15:25:28 +00:00
|
|
|
obj_elf_get_vtable_entry (void)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
symbolS *sym;
|
|
|
|
offsetT offset;
|
|
|
|
|
|
|
|
if (*input_line_pointer == '#')
|
|
|
|
++input_line_pointer;
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
sym = get_sym_from_input_line_and_check ();
|
2012-03-26 19:18:29 +00:00
|
|
|
if (*input_line_pointer != ',')
|
|
|
|
{
|
|
|
|
as_bad (_("expected comma after name in .vtable_entry"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
++input_line_pointer;
|
|
|
|
if (*input_line_pointer == '#')
|
|
|
|
++input_line_pointer;
|
|
|
|
|
|
|
|
offset = get_absolute_expression ();
|
|
|
|
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
|
|
|
|
return fix_new (frag_now, frag_now_fix (), 0, sym, offset, 0,
|
|
|
|
BFD_RELOC_VTABLE_ENTRY);
|
|
|
|
}
|
|
|
|
|
2018-12-28 15:25:28 +00:00
|
|
|
/* This is a version of obj_elf_get_vtable_entry() that is
|
|
|
|
suitable for use in struct _pseudo_type tables. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_vtable_entry (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
(void) obj_elf_get_vtable_entry ();
|
|
|
|
}
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
#define skip_whitespace(str) do { if (*(str) == ' ') ++(str); } while (0)
|
|
|
|
|
|
|
|
static inline int
|
|
|
|
skip_past_char (char ** str, char c)
|
|
|
|
{
|
|
|
|
if (**str == c)
|
|
|
|
{
|
|
|
|
(*str)++;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
#define skip_past_comma(str) skip_past_char (str, ',')
|
|
|
|
|
2015-08-28 15:32:19 +00:00
|
|
|
/* A list of attributes that have been explicitly set by the assembly code.
|
|
|
|
VENDOR is the vendor id, BASE is the tag shifted right by the number
|
|
|
|
of bits in MASK, and bit N of MASK is set if tag BASE+N has been set. */
|
|
|
|
struct recorded_attribute_info {
|
|
|
|
struct recorded_attribute_info *next;
|
|
|
|
int vendor;
|
|
|
|
unsigned int base;
|
|
|
|
unsigned long mask;
|
|
|
|
};
|
|
|
|
static struct recorded_attribute_info *recorded_attributes;
|
|
|
|
|
|
|
|
/* Record that we have seen an explicit specification of attribute TAG
|
|
|
|
for vendor VENDOR. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
record_attribute (int vendor, unsigned int tag)
|
|
|
|
{
|
|
|
|
unsigned int base;
|
|
|
|
unsigned long mask;
|
|
|
|
struct recorded_attribute_info *rai;
|
|
|
|
|
|
|
|
base = tag / (8 * sizeof (rai->mask));
|
|
|
|
mask = 1UL << (tag % (8 * sizeof (rai->mask)));
|
|
|
|
for (rai = recorded_attributes; rai; rai = rai->next)
|
|
|
|
if (rai->vendor == vendor && rai->base == base)
|
|
|
|
{
|
|
|
|
rai->mask |= mask;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
rai = XNEW (struct recorded_attribute_info);
|
|
|
|
rai->next = recorded_attributes;
|
|
|
|
rai->vendor = vendor;
|
|
|
|
rai->base = base;
|
|
|
|
rai->mask = mask;
|
|
|
|
recorded_attributes = rai;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Return true if we have seen an explicit specification of attribute TAG
|
|
|
|
for vendor VENDOR. */
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
bool
|
2015-08-28 15:32:19 +00:00
|
|
|
obj_elf_seen_attribute (int vendor, unsigned int tag)
|
|
|
|
{
|
|
|
|
unsigned int base;
|
|
|
|
unsigned long mask;
|
|
|
|
struct recorded_attribute_info *rai;
|
|
|
|
|
|
|
|
base = tag / (8 * sizeof (rai->mask));
|
|
|
|
mask = 1UL << (tag % (8 * sizeof (rai->mask)));
|
|
|
|
for (rai = recorded_attributes; rai; rai = rai->next)
|
|
|
|
if (rai->vendor == vendor && rai->base == base)
|
|
|
|
return (rai->mask & mask) != 0;
|
2022-10-27 18:45:45 +00:00
|
|
|
return false;
|
2015-08-28 15:32:19 +00:00
|
|
|
}
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
/* Parse an attribute directive for VENDOR.
|
|
|
|
Returns the attribute number read, or zero on error. */
|
|
|
|
|
|
|
|
int
|
|
|
|
obj_elf_vendor_attribute (int vendor)
|
|
|
|
{
|
|
|
|
expressionS exp;
|
|
|
|
int type;
|
|
|
|
int tag;
|
|
|
|
unsigned int i = 0;
|
|
|
|
char *s = NULL;
|
|
|
|
|
|
|
|
/* Read the first number or name. */
|
|
|
|
skip_whitespace (input_line_pointer);
|
|
|
|
s = input_line_pointer;
|
|
|
|
if (ISDIGIT (*input_line_pointer))
|
|
|
|
{
|
|
|
|
expression (& exp);
|
|
|
|
if (exp.X_op != O_constant)
|
|
|
|
goto bad;
|
|
|
|
tag = exp.X_add_number;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
char *name;
|
|
|
|
|
|
|
|
/* A name may contain '_', but no other punctuation. */
|
|
|
|
for (; ISALNUM (*input_line_pointer) || *input_line_pointer == '_';
|
|
|
|
++input_line_pointer)
|
|
|
|
i++;
|
|
|
|
if (i == 0)
|
|
|
|
goto bad;
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
name = xmemdup0 (s, i);
|
2014-09-12 22:14:23 +00:00
|
|
|
|
|
|
|
#ifndef CONVERT_SYMBOLIC_ATTRIBUTE
|
|
|
|
#define CONVERT_SYMBOLIC_ATTRIBUTE(a) -1
|
|
|
|
#endif
|
|
|
|
|
|
|
|
tag = CONVERT_SYMBOLIC_ATTRIBUTE (name);
|
|
|
|
if (tag == -1)
|
|
|
|
{
|
|
|
|
as_bad (_("Attribute name not recognised: %s"), name);
|
|
|
|
ignore_rest_of_line ();
|
2017-04-10 11:32:00 +00:00
|
|
|
free (name);
|
2014-09-12 22:14:23 +00:00
|
|
|
return 0;
|
|
|
|
}
|
2017-04-10 11:32:00 +00:00
|
|
|
free (name);
|
2014-09-12 22:14:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
type = _bfd_elf_obj_attrs_arg_type (stdoutput, vendor, tag);
|
|
|
|
|
|
|
|
if (skip_past_comma (&input_line_pointer) == -1)
|
|
|
|
goto bad;
|
|
|
|
if (type & 1)
|
|
|
|
{
|
|
|
|
expression (& exp);
|
|
|
|
if (exp.X_op != O_constant)
|
|
|
|
{
|
|
|
|
as_bad (_("expected numeric constant"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
i = exp.X_add_number;
|
|
|
|
}
|
|
|
|
if ((type & 3) == 3
|
|
|
|
&& skip_past_comma (&input_line_pointer) == -1)
|
|
|
|
{
|
|
|
|
as_bad (_("expected comma"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (type & 2)
|
|
|
|
{
|
|
|
|
int len;
|
|
|
|
|
|
|
|
skip_whitespace (input_line_pointer);
|
|
|
|
if (*input_line_pointer != '"')
|
|
|
|
goto bad_string;
|
|
|
|
s = demand_copy_C_string (&len);
|
|
|
|
}
|
|
|
|
|
2015-08-28 15:32:19 +00:00
|
|
|
record_attribute (vendor, tag);
|
2014-09-12 22:14:23 +00:00
|
|
|
switch (type & 3)
|
|
|
|
{
|
|
|
|
case 3:
|
|
|
|
bfd_elf_add_obj_attr_int_string (stdoutput, vendor, tag, i, s);
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
bfd_elf_add_obj_attr_string (stdoutput, vendor, tag, s);
|
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
bfd_elf_add_obj_attr_int (stdoutput, vendor, tag, i);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
abort ();
|
|
|
|
}
|
|
|
|
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
return tag;
|
2022-10-27 18:45:45 +00:00
|
|
|
bad_string:
|
2014-09-12 22:14:23 +00:00
|
|
|
as_bad (_("bad string constant"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return 0;
|
2022-10-27 18:45:45 +00:00
|
|
|
bad:
|
2014-09-12 22:14:23 +00:00
|
|
|
as_bad (_("expected <tag> , <value>"));
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Parse a .gnu_attribute directive. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_gnu_attribute (int ignored ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
obj_elf_vendor_attribute (OBJ_ATTR_GNU);
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
void
|
|
|
|
elf_obj_read_begin_hook (void)
|
|
|
|
{
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
if (ECOFF_DEBUGGING)
|
|
|
|
ecoff_read_begin_hook ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_obj_symbol_new_hook (symbolS *symbolP)
|
|
|
|
{
|
|
|
|
struct elf_obj_sy *sy_obj;
|
|
|
|
|
|
|
|
sy_obj = symbol_get_obj (symbolP);
|
|
|
|
sy_obj->size = NULL;
|
|
|
|
sy_obj->versioned_name = NULL;
|
|
|
|
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
if (ECOFF_DEBUGGING)
|
|
|
|
ecoff_symbol_new_hook (symbolP);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Deduplicate size expressions. We might get into trouble with
|
|
|
|
multiple freeing or use after free if we leave them pointing to the
|
|
|
|
same expressionS. */
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_obj_symbol_clone_hook (symbolS *newsym, symbolS *orgsym ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
struct elf_obj_sy *newelf = symbol_get_obj (newsym);
|
|
|
|
if (newelf->size)
|
|
|
|
{
|
|
|
|
expressionS *exp = XNEW (expressionS);
|
|
|
|
*exp = *newelf->size;
|
|
|
|
newelf->size = exp;
|
|
|
|
}
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
void
|
|
|
|
elf_copy_symbol_attributes (symbolS *dest, symbolS *src)
|
|
|
|
{
|
|
|
|
struct elf_obj_sy *srcelf = symbol_get_obj (src);
|
|
|
|
struct elf_obj_sy *destelf = symbol_get_obj (dest);
|
2022-10-27 18:45:45 +00:00
|
|
|
/* If size is unset, copy size from src. Because we don't track whether
|
|
|
|
.size has been used, we can't differentiate .size dest, 0 from the case
|
|
|
|
where dest's size is unset. */
|
|
|
|
if (!destelf->size && S_GET_SIZE (dest) == 0)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
if (srcelf->size)
|
|
|
|
{
|
|
|
|
destelf->size = XNEW (expressionS);
|
|
|
|
*destelf->size = *srcelf->size;
|
|
|
|
}
|
|
|
|
S_SET_SIZE (dest, S_GET_SIZE (src));
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
/* Don't copy visibility. */
|
|
|
|
S_SET_OTHER (dest, (ELF_ST_VISIBILITY (S_GET_OTHER (dest))
|
|
|
|
| (S_GET_OTHER (src) & ~ELF_ST_VISIBILITY (-1))));
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_version (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
char *name;
|
|
|
|
unsigned int c;
|
|
|
|
char *p;
|
|
|
|
asection *seg = now_seg;
|
|
|
|
subsegT subseg = now_subseg;
|
|
|
|
Elf_Internal_Note i_note;
|
|
|
|
Elf_External_Note e_note;
|
|
|
|
asection *note_secp = NULL;
|
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if (*input_line_pointer == '\"')
|
|
|
|
{
|
|
|
|
unsigned int len;
|
|
|
|
|
|
|
|
++input_line_pointer; /* -> 1st char of string. */
|
|
|
|
name = input_line_pointer;
|
|
|
|
|
|
|
|
while (is_a_char (c = next_char_of_string ()))
|
|
|
|
;
|
|
|
|
c = *input_line_pointer;
|
|
|
|
*input_line_pointer = '\0';
|
|
|
|
*(input_line_pointer - 1) = '\0';
|
|
|
|
*input_line_pointer = c;
|
|
|
|
|
|
|
|
/* Create the .note section. */
|
|
|
|
note_secp = subseg_new (".note", 0);
|
2022-10-27 18:45:45 +00:00
|
|
|
bfd_set_section_flags (note_secp, SEC_HAS_CONTENTS | SEC_READONLY);
|
2018-12-28 15:25:28 +00:00
|
|
|
record_alignment (note_secp, 2);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
/* Process the version string. */
|
|
|
|
len = strlen (name) + 1;
|
|
|
|
|
|
|
|
/* PR 3456: Although the name field is padded out to an 4-byte
|
|
|
|
boundary, the namesz field should not be adjusted. */
|
|
|
|
i_note.namesz = len;
|
|
|
|
i_note.descsz = 0; /* No description. */
|
|
|
|
i_note.type = NT_VERSION;
|
|
|
|
p = frag_more (sizeof (e_note.namesz));
|
|
|
|
md_number_to_chars (p, i_note.namesz, sizeof (e_note.namesz));
|
|
|
|
p = frag_more (sizeof (e_note.descsz));
|
|
|
|
md_number_to_chars (p, i_note.descsz, sizeof (e_note.descsz));
|
|
|
|
p = frag_more (sizeof (e_note.type));
|
|
|
|
md_number_to_chars (p, i_note.type, sizeof (e_note.type));
|
|
|
|
p = frag_more (len);
|
|
|
|
memcpy (p, name, len);
|
|
|
|
|
|
|
|
frag_align (2, 0, 0);
|
|
|
|
|
|
|
|
subseg_set (seg, subseg);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
as_bad (_("expected quoted string"));
|
|
|
|
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_size (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
2017-04-10 11:32:00 +00:00
|
|
|
char *name;
|
|
|
|
char c = get_symbol_name (&name);
|
2012-03-26 19:18:29 +00:00
|
|
|
char *p;
|
|
|
|
expressionS exp;
|
|
|
|
symbolS *sym;
|
|
|
|
|
|
|
|
p = input_line_pointer;
|
|
|
|
*p = c;
|
2017-04-10 11:32:00 +00:00
|
|
|
SKIP_WHITESPACE_AFTER_NAME ();
|
2012-03-26 19:18:29 +00:00
|
|
|
if (*input_line_pointer != ',')
|
|
|
|
{
|
|
|
|
*p = 0;
|
|
|
|
as_bad (_("expected comma after name `%s' in .size directive"), name);
|
|
|
|
*p = c;
|
|
|
|
ignore_rest_of_line ();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
input_line_pointer++;
|
|
|
|
expression (&exp);
|
|
|
|
if (exp.X_op == O_absent)
|
|
|
|
{
|
|
|
|
as_bad (_("missing expression in .size directive"));
|
|
|
|
exp.X_op = O_constant;
|
|
|
|
exp.X_add_number = 0;
|
|
|
|
}
|
|
|
|
*p = 0;
|
|
|
|
sym = symbol_find_or_make (name);
|
|
|
|
*p = c;
|
|
|
|
if (exp.X_op == O_constant)
|
|
|
|
{
|
|
|
|
S_SET_SIZE (sym, exp.X_add_number);
|
2022-10-27 18:45:45 +00:00
|
|
|
xfree (symbol_get_obj (sym)->size);
|
|
|
|
symbol_get_obj (sym)->size = NULL;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2017-04-10 11:32:00 +00:00
|
|
|
symbol_get_obj (sym)->size = XNEW (expressionS);
|
2012-03-26 19:18:29 +00:00
|
|
|
*symbol_get_obj (sym)->size = exp;
|
|
|
|
}
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Handle the ELF .type pseudo-op. This sets the type of a symbol.
|
|
|
|
There are six syntaxes:
|
|
|
|
|
|
|
|
The first (used on Solaris) is
|
|
|
|
.type SYM,#function
|
|
|
|
The second (used on UnixWare) is
|
|
|
|
.type SYM,@function
|
|
|
|
The third (reportedly to be used on Irix 6.0) is
|
|
|
|
.type SYM STT_FUNC
|
|
|
|
The fourth (used on NetBSD/Arm and Linux/ARM) is
|
|
|
|
.type SYM,%function
|
|
|
|
The fifth (used on SVR4/860) is
|
|
|
|
.type SYM,"function"
|
|
|
|
The sixth (emitted by recent SunPRO under Solaris) is
|
|
|
|
.type SYM,[0-9]
|
|
|
|
where the integer is the STT_* value.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static char *
|
|
|
|
obj_elf_type_name (char *cp)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
|
|
|
|
p = input_line_pointer;
|
|
|
|
if (*input_line_pointer >= '0'
|
|
|
|
&& *input_line_pointer <= '9')
|
|
|
|
{
|
|
|
|
while (*input_line_pointer >= '0'
|
|
|
|
&& *input_line_pointer <= '9')
|
|
|
|
++input_line_pointer;
|
|
|
|
*cp = *input_line_pointer;
|
|
|
|
*input_line_pointer = '\0';
|
|
|
|
}
|
|
|
|
else
|
2017-04-10 11:32:00 +00:00
|
|
|
*cp = get_symbol_name (&p);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
return p;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_type (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
char c;
|
|
|
|
int type;
|
|
|
|
const char *type_name;
|
|
|
|
symbolS *sym;
|
|
|
|
elf_symbol_type *elfsym;
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
sym = get_sym_from_input_line_and_check ();
|
|
|
|
c = *input_line_pointer;
|
2012-03-26 19:18:29 +00:00
|
|
|
elfsym = (elf_symbol_type *) symbol_get_bfdsym (sym);
|
|
|
|
|
|
|
|
if (*input_line_pointer == ',')
|
|
|
|
++input_line_pointer;
|
|
|
|
|
|
|
|
SKIP_WHITESPACE ();
|
|
|
|
if ( *input_line_pointer == '#'
|
|
|
|
|| *input_line_pointer == '@'
|
|
|
|
|| *input_line_pointer == '"'
|
|
|
|
|| *input_line_pointer == '%')
|
|
|
|
++input_line_pointer;
|
|
|
|
|
|
|
|
type_name = obj_elf_type_name (& c);
|
|
|
|
|
|
|
|
type = 0;
|
|
|
|
if (strcmp (type_name, "function") == 0
|
|
|
|
|| strcmp (type_name, "2") == 0
|
|
|
|
|| strcmp (type_name, "STT_FUNC") == 0)
|
|
|
|
type = BSF_FUNCTION;
|
|
|
|
else if (strcmp (type_name, "object") == 0
|
|
|
|
|| strcmp (type_name, "1") == 0
|
|
|
|
|| strcmp (type_name, "STT_OBJECT") == 0)
|
|
|
|
type = BSF_OBJECT;
|
|
|
|
else if (strcmp (type_name, "tls_object") == 0
|
|
|
|
|| strcmp (type_name, "6") == 0
|
|
|
|
|| strcmp (type_name, "STT_TLS") == 0)
|
|
|
|
type = BSF_OBJECT | BSF_THREAD_LOCAL;
|
|
|
|
else if (strcmp (type_name, "notype") == 0
|
|
|
|
|| strcmp (type_name, "0") == 0
|
|
|
|
|| strcmp (type_name, "STT_NOTYPE") == 0)
|
|
|
|
;
|
|
|
|
else if (strcmp (type_name, "common") == 0
|
|
|
|
|| strcmp (type_name, "5") == 0
|
|
|
|
|| strcmp (type_name, "STT_COMMON") == 0)
|
|
|
|
{
|
|
|
|
type = BSF_OBJECT;
|
|
|
|
|
|
|
|
if (! S_IS_COMMON (sym))
|
|
|
|
{
|
|
|
|
if (S_IS_VOLATILE (sym))
|
|
|
|
{
|
|
|
|
sym = symbol_clone (sym, 1);
|
|
|
|
S_SET_SEGMENT (sym, bfd_com_section_ptr);
|
|
|
|
S_SET_VALUE (sym, 0);
|
|
|
|
S_SET_EXTERNAL (sym);
|
|
|
|
symbol_set_frag (sym, &zero_address_frag);
|
|
|
|
S_CLEAR_VOLATILE (sym);
|
|
|
|
}
|
|
|
|
else if (S_IS_DEFINED (sym) || symbol_equated_p (sym))
|
|
|
|
as_bad (_("symbol '%s' is already defined"), S_GET_NAME (sym));
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* FIXME: Is it safe to just change the section ? */
|
|
|
|
S_SET_SEGMENT (sym, bfd_com_section_ptr);
|
|
|
|
S_SET_VALUE (sym, 0);
|
|
|
|
S_SET_EXTERNAL (sym);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (strcmp (type_name, "gnu_indirect_function") == 0
|
|
|
|
|| strcmp (type_name, "10") == 0
|
|
|
|
|| strcmp (type_name, "STT_GNU_IFUNC") == 0)
|
|
|
|
{
|
2022-10-27 18:43:13 +00:00
|
|
|
const struct elf_backend_data *bed;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:43:13 +00:00
|
|
|
bed = get_elf_backend_data (stdoutput);
|
2022-10-27 18:45:45 +00:00
|
|
|
if (bed->elf_osabi != ELFOSABI_NONE
|
|
|
|
&& bed->elf_osabi != ELFOSABI_GNU
|
|
|
|
&& bed->elf_osabi != ELFOSABI_FREEBSD)
|
|
|
|
as_bad (_("symbol type \"%s\" is supported only by GNU "
|
|
|
|
"and FreeBSD targets"), type_name);
|
|
|
|
/* MIPS targets do not support IFUNCS. */
|
|
|
|
else if (bed->target_id == MIPS_ELF_DATA)
|
|
|
|
as_bad (_("symbol type \"%s\" is not supported by "
|
|
|
|
"MIPS targets"), type_name);
|
|
|
|
elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_ifunc;
|
2012-03-26 19:18:29 +00:00
|
|
|
type = BSF_FUNCTION | BSF_GNU_INDIRECT_FUNCTION;
|
|
|
|
}
|
|
|
|
else if (strcmp (type_name, "gnu_unique_object") == 0)
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
const struct elf_backend_data *bed;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
bed = get_elf_backend_data (stdoutput);
|
|
|
|
if (bed->elf_osabi != ELFOSABI_NONE
|
|
|
|
&& bed->elf_osabi != ELFOSABI_GNU)
|
2012-03-26 19:18:29 +00:00
|
|
|
as_bad (_("symbol type \"%s\" is supported only by GNU targets"),
|
|
|
|
type_name);
|
2022-10-27 18:45:45 +00:00
|
|
|
elf_tdata (stdoutput)->has_gnu_osabi |= elf_gnu_osabi_unique;
|
2012-03-26 19:18:29 +00:00
|
|
|
type = BSF_OBJECT | BSF_GNU_UNIQUE;
|
|
|
|
}
|
|
|
|
#ifdef md_elf_symbol_type
|
|
|
|
else if ((type = md_elf_symbol_type (type_name, sym, elfsym)) != -1)
|
|
|
|
;
|
|
|
|
#endif
|
|
|
|
else
|
|
|
|
as_bad (_("unrecognized symbol type \"%s\""), type_name);
|
|
|
|
|
|
|
|
*input_line_pointer = c;
|
|
|
|
|
|
|
|
if (*input_line_pointer == '"')
|
|
|
|
++input_line_pointer;
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
#ifdef md_elf_symbol_type_change
|
|
|
|
if (!md_elf_symbol_type_change (sym, elfsym, type))
|
|
|
|
#endif
|
|
|
|
{
|
|
|
|
flagword mask = BSF_FUNCTION | BSF_OBJECT;
|
|
|
|
|
|
|
|
if (type != BSF_FUNCTION)
|
|
|
|
mask |= BSF_GNU_INDIRECT_FUNCTION;
|
|
|
|
if (type != BSF_OBJECT)
|
|
|
|
{
|
|
|
|
mask |= BSF_GNU_UNIQUE | BSF_THREAD_LOCAL;
|
|
|
|
|
|
|
|
if (S_IS_COMMON (sym))
|
|
|
|
{
|
|
|
|
as_bad (_("cannot change type of common symbol '%s'"),
|
|
|
|
S_GET_NAME (sym));
|
|
|
|
mask = type = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Don't warn when changing to STT_NOTYPE. */
|
|
|
|
if (type)
|
|
|
|
{
|
|
|
|
flagword new = (elfsym->symbol.flags & ~mask) | type;
|
|
|
|
|
|
|
|
if (new != (elfsym->symbol.flags | type))
|
|
|
|
as_warn (_("symbol '%s' already has its type set"), S_GET_NAME (sym));
|
|
|
|
elfsym->symbol.flags = new;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
elfsym->symbol.flags &= ~mask;
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
demand_empty_rest_of_line ();
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
obj_elf_ident (int ignore ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
static segT comment_section;
|
|
|
|
segT old_section = now_seg;
|
|
|
|
int old_subsection = now_subseg;
|
|
|
|
|
|
|
|
#ifdef md_flush_pending_output
|
|
|
|
md_flush_pending_output ();
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (!comment_section)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
comment_section = subseg_new (".comment", 0);
|
2022-10-27 18:45:45 +00:00
|
|
|
bfd_set_section_flags (comment_section, (SEC_READONLY | SEC_HAS_CONTENTS
|
|
|
|
| SEC_MERGE | SEC_STRINGS));
|
2012-03-26 19:18:29 +00:00
|
|
|
comment_section->entsize = 1;
|
|
|
|
#ifdef md_elf_section_change_hook
|
|
|
|
md_elf_section_change_hook ();
|
|
|
|
#endif
|
|
|
|
p = frag_more (1);
|
|
|
|
*p = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
subseg_set (comment_section, 0);
|
|
|
|
stringer (8 + 1);
|
|
|
|
subseg_set (old_section, old_subsection);
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef INIT_STAB_SECTION
|
|
|
|
|
|
|
|
/* The first entry in a .stabs section is special. */
|
|
|
|
|
|
|
|
void
|
|
|
|
obj_elf_init_stab_section (segT seg)
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
char *file;
|
2012-03-26 19:18:29 +00:00
|
|
|
char *p;
|
|
|
|
char *stabstr_name;
|
|
|
|
unsigned int stroff;
|
|
|
|
|
|
|
|
/* Force the section to align to a longword boundary. Without this,
|
|
|
|
UnixWare ar crashes. */
|
2022-10-27 18:45:45 +00:00
|
|
|
bfd_set_section_alignment (seg, 2);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
/* Make space for this first symbol. */
|
|
|
|
p = frag_more (12);
|
|
|
|
/* Zero it out. */
|
|
|
|
memset (p, 0, 12);
|
2022-10-27 18:45:45 +00:00
|
|
|
file = remap_debug_filename (as_where (NULL));
|
2017-04-10 11:32:00 +00:00
|
|
|
stabstr_name = concat (segment_name (seg), "str", (char *) NULL);
|
2022-10-27 18:45:45 +00:00
|
|
|
stroff = get_stab_string_offset (file, stabstr_name, true);
|
2014-09-12 22:14:23 +00:00
|
|
|
know (stroff == 1 || (stroff == 0 && file[0] == '\0'));
|
2012-03-26 19:18:29 +00:00
|
|
|
md_number_to_chars (p, stroff, 4);
|
|
|
|
seg_info (seg)->stabu.p = p;
|
2022-10-27 18:45:45 +00:00
|
|
|
free (file);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Fill in the counts in the first entry in a .stabs section. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
adjust_stab_sections (bfd *abfd, asection *sec, void *xxx ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
char *name;
|
|
|
|
asection *strsec;
|
|
|
|
char *p;
|
|
|
|
int strsz, nsyms;
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (!startswith (sec->name, ".stab"))
|
2012-03-26 19:18:29 +00:00
|
|
|
return;
|
|
|
|
if (!strcmp ("str", sec->name + strlen (sec->name) - 3))
|
|
|
|
return;
|
|
|
|
|
2017-04-10 11:32:00 +00:00
|
|
|
name = concat (sec->name, "str", NULL);
|
2012-03-26 19:18:29 +00:00
|
|
|
strsec = bfd_get_section_by_name (abfd, name);
|
|
|
|
if (strsec)
|
2022-10-27 18:45:45 +00:00
|
|
|
strsz = bfd_section_size (strsec);
|
2012-03-26 19:18:29 +00:00
|
|
|
else
|
|
|
|
strsz = 0;
|
2022-10-27 18:45:45 +00:00
|
|
|
nsyms = bfd_section_size (sec) / 12 - 1;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
p = seg_info (sec)->stabu.p;
|
|
|
|
gas_assert (p != 0);
|
|
|
|
|
|
|
|
bfd_h_put_16 (abfd, nsyms, p + 6);
|
|
|
|
bfd_h_put_32 (abfd, strsz, p + 8);
|
2017-04-10 11:32:00 +00:00
|
|
|
free (name);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
|
|
|
|
/* This function is called by the ECOFF code. It is supposed to
|
|
|
|
record the external symbol information so that the backend can
|
|
|
|
write it out correctly. The ELF backend doesn't actually handle
|
|
|
|
this at the moment, so we do it ourselves. We save the information
|
|
|
|
in the symbol. */
|
|
|
|
|
|
|
|
#ifdef OBJ_MAYBE_ELF
|
|
|
|
static
|
|
|
|
#endif
|
|
|
|
void
|
|
|
|
elf_ecoff_set_ext (symbolS *sym, struct ecoff_extr *ext)
|
|
|
|
{
|
|
|
|
symbol_get_bfdsym (sym)->udata.p = ext;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This function is called by bfd_ecoff_debug_externals. It is
|
|
|
|
supposed to *EXT to the external symbol information, and return
|
|
|
|
whether the symbol should be used at all. */
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
static bool
|
2012-03-26 19:18:29 +00:00
|
|
|
elf_get_extr (asymbol *sym, EXTR *ext)
|
|
|
|
{
|
|
|
|
if (sym->udata.p == NULL)
|
2022-10-27 18:45:45 +00:00
|
|
|
return false;
|
2012-03-26 19:18:29 +00:00
|
|
|
*ext = *(EXTR *) sym->udata.p;
|
2022-10-27 18:45:45 +00:00
|
|
|
return true;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* This function is called by bfd_ecoff_debug_externals. It has
|
|
|
|
nothing to do for ELF. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
elf_set_index (asymbol *sym ATTRIBUTE_UNUSED,
|
|
|
|
bfd_size_type indx ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* NEED_ECOFF_DEBUG */
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_frob_symbol (symbolS *symp, int *puntp)
|
|
|
|
{
|
|
|
|
struct elf_obj_sy *sy_obj;
|
2014-09-12 22:14:23 +00:00
|
|
|
expressionS *size;
|
2022-10-27 18:45:45 +00:00
|
|
|
struct elf_versioned_name_list *versioned_name;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
if (ECOFF_DEBUGGING)
|
|
|
|
ecoff_frob_symbol (symp);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
sy_obj = symbol_get_obj (symp);
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
size = sy_obj->size;
|
|
|
|
if (size != NULL)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2014-09-12 22:14:23 +00:00
|
|
|
if (resolve_expression (size)
|
|
|
|
&& size->X_op == O_constant)
|
|
|
|
S_SET_SIZE (symp, size->X_add_number);
|
|
|
|
else
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2017-04-10 11:32:00 +00:00
|
|
|
if (!flag_allow_nonconst_size)
|
2014-09-12 22:14:23 +00:00
|
|
|
as_bad (_(".size expression for %s "
|
|
|
|
"does not evaluate to a constant"), S_GET_NAME (symp));
|
|
|
|
else
|
|
|
|
as_warn (_(".size expression for %s "
|
|
|
|
"does not evaluate to a constant"), S_GET_NAME (symp));
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
free (sy_obj->size);
|
|
|
|
sy_obj->size = NULL;
|
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
versioned_name = sy_obj->versioned_name;
|
|
|
|
if (versioned_name)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
/* This symbol was given a new name with the .symver directive.
|
|
|
|
If this is an external reference, just rename the symbol to
|
|
|
|
include the version string. This will make the relocs be
|
2022-10-27 18:45:45 +00:00
|
|
|
against the correct versioned symbol. */
|
|
|
|
|
|
|
|
/* We will have already reported an version error. */
|
|
|
|
if (sy_obj->bad_version)
|
|
|
|
*puntp = true;
|
|
|
|
/* elf_frob_file_before_adjust only allows one version symbol for
|
|
|
|
renamed symbol. */
|
|
|
|
else if (sy_obj->rename)
|
|
|
|
S_SET_NAME (symp, versioned_name->name);
|
|
|
|
else if (S_IS_COMMON (symp))
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
as_bad (_("`%s' can't be versioned to common symbol '%s'"),
|
|
|
|
versioned_name->name, S_GET_NAME (symp));
|
|
|
|
*puntp = true;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
asymbol *bfdsym;
|
|
|
|
elf_symbol_type *elfsym;
|
|
|
|
|
|
|
|
/* This is a definition. Add an alias for each version.
|
|
|
|
FIXME: Using an alias will permit the debugging information
|
|
|
|
to refer to the right symbol. However, it's not clear
|
|
|
|
whether it is the best approach. */
|
|
|
|
|
|
|
|
/* FIXME: Creating a new symbol here is risky. We're
|
|
|
|
in the final loop over the symbol table. We can
|
|
|
|
get away with it only because the symbol goes to
|
|
|
|
the end of the list, where the loop will still see
|
|
|
|
it. It would probably be better to do this in
|
|
|
|
obj_frob_file_before_adjust. */
|
|
|
|
for (; versioned_name != NULL;
|
|
|
|
versioned_name = versioned_name->next)
|
2022-10-27 18:43:13 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
symbolS *symp2 = symbol_find_or_make (versioned_name->name);
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
S_SET_SEGMENT (symp2, S_GET_SEGMENT (symp));
|
|
|
|
|
|
|
|
/* Subtracting out the frag address here is a hack
|
|
|
|
because we are in the middle of the final loop. */
|
|
|
|
S_SET_VALUE (symp2,
|
|
|
|
(S_GET_VALUE (symp)
|
2022-10-27 18:45:45 +00:00
|
|
|
- (symbol_get_frag (symp)->fr_address
|
|
|
|
/ OCTETS_PER_BYTE)));
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
symbol_set_frag (symp2, symbol_get_frag (symp));
|
|
|
|
|
|
|
|
/* This will copy over the size information. */
|
|
|
|
copy_symbol_attributes (symp2, symp);
|
|
|
|
|
|
|
|
S_SET_OTHER (symp2, S_GET_OTHER (symp));
|
|
|
|
|
|
|
|
if (S_IS_WEAK (symp))
|
|
|
|
S_SET_WEAK (symp2);
|
|
|
|
|
|
|
|
if (S_IS_EXTERNAL (symp))
|
|
|
|
S_SET_EXTERNAL (symp2);
|
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
|
|
|
|
switch (sy_obj->visibility)
|
|
|
|
{
|
|
|
|
case visibility_unchanged:
|
|
|
|
break;
|
|
|
|
case visibility_hidden:
|
|
|
|
bfdsym = symbol_get_bfdsym (symp);
|
|
|
|
elfsym = elf_symbol_from (bfdsym);
|
|
|
|
elfsym->internal_elf_sym.st_other &= ~3;
|
|
|
|
elfsym->internal_elf_sym.st_other |= STV_HIDDEN;
|
|
|
|
break;
|
|
|
|
case visibility_remove:
|
|
|
|
/* Don't remove the symbol if it is used in relocation.
|
|
|
|
Instead, mark it as to be removed and issue an error
|
|
|
|
if the symbol has more than one versioned name. */
|
|
|
|
if (symbol_used_in_reloc_p (symp))
|
|
|
|
{
|
|
|
|
if (sy_obj->versioned_name->next != NULL)
|
|
|
|
as_bad (_("symbol '%s' with multiple versions cannot be used in relocation"),
|
|
|
|
S_GET_NAME (symp));
|
|
|
|
symbol_mark_removed (symp);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
|
|
|
break;
|
|
|
|
case visibility_local:
|
|
|
|
S_CLEAR_EXTERNAL (symp);
|
|
|
|
break;
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Double check weak symbols. */
|
|
|
|
if (S_IS_WEAK (symp))
|
|
|
|
{
|
|
|
|
if (S_IS_COMMON (symp))
|
|
|
|
as_bad (_("symbol `%s' can not be both weak and common"),
|
|
|
|
S_GET_NAME (symp));
|
|
|
|
}
|
2022-10-27 18:45:45 +00:00
|
|
|
}
|
2022-10-27 18:43:13 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Fix up SYMPP which has been marked to be removed by .symver. */
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_fixup_removed_symbol (symbolS **sympp)
|
|
|
|
{
|
|
|
|
symbolS *symp = *sympp;
|
|
|
|
struct elf_obj_sy *sy_obj = symbol_get_obj (symp);
|
|
|
|
|
|
|
|
/* Replace the removed symbol with the versioned symbol. */
|
|
|
|
symp = symbol_find (sy_obj->versioned_name->name);
|
|
|
|
*sympp = symp;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct group_list
|
|
|
|
{
|
|
|
|
asection **head; /* Section lists. */
|
|
|
|
unsigned int num_group; /* Number of lists. */
|
2022-10-27 18:45:45 +00:00
|
|
|
htab_t indexes; /* Maps group name to index in head array. */
|
2012-03-26 19:18:29 +00:00
|
|
|
};
|
|
|
|
|
2018-12-28 15:25:28 +00:00
|
|
|
static struct group_list groups;
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
/* Called via bfd_map_over_sections. If SEC is a member of a group,
|
|
|
|
add it to a list of sections belonging to the group. INF is a
|
|
|
|
pointer to a struct group_list, which is where we store the head of
|
2022-10-27 18:45:45 +00:00
|
|
|
each list. If its link_to_symbol_name isn't NULL, set up its
|
|
|
|
linked-to section. */
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
static void
|
2022-10-27 18:45:45 +00:00
|
|
|
build_additional_section_info (bfd *abfd ATTRIBUTE_UNUSED,
|
|
|
|
asection *sec, void *inf)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
struct group_list *list = (struct group_list *) inf;
|
|
|
|
const char *group_name = elf_group_name (sec);
|
|
|
|
unsigned int i;
|
2014-09-12 22:14:23 +00:00
|
|
|
unsigned int *elem_idx;
|
|
|
|
unsigned int *idx_ptr;
|
2012-03-26 19:18:29 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (sec->map_head.linked_to_symbol_name)
|
|
|
|
{
|
|
|
|
symbolS *linked_to_sym;
|
|
|
|
linked_to_sym = symbol_find (sec->map_head.linked_to_symbol_name);
|
|
|
|
if (!linked_to_sym || !S_IS_DEFINED (linked_to_sym))
|
|
|
|
as_bad (_("undefined linked-to symbol `%s' on section `%s'"),
|
|
|
|
sec->map_head.linked_to_symbol_name,
|
|
|
|
bfd_section_name (sec));
|
|
|
|
else
|
|
|
|
elf_linked_to_section (sec) = S_GET_SEGMENT (linked_to_sym);
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
if (group_name == NULL)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* If this group already has a list, add the section to the head of
|
|
|
|
the list. */
|
2022-10-27 18:45:45 +00:00
|
|
|
elem_idx = (unsigned int *) str_hash_find (list->indexes, group_name);
|
2014-09-12 22:14:23 +00:00
|
|
|
if (elem_idx != NULL)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2014-09-12 22:14:23 +00:00
|
|
|
elf_next_in_group (sec) = list->head[*elem_idx];
|
|
|
|
list->head[*elem_idx] = sec;
|
|
|
|
return;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* New group. Make the arrays bigger in chunks to minimize calls to
|
|
|
|
realloc. */
|
|
|
|
i = list->num_group;
|
|
|
|
if ((i & 127) == 0)
|
|
|
|
{
|
|
|
|
unsigned int newsize = i + 128;
|
2017-04-10 11:32:00 +00:00
|
|
|
list->head = XRESIZEVEC (asection *, list->head, newsize);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
list->head[i] = sec;
|
|
|
|
list->num_group += 1;
|
2014-09-12 22:14:23 +00:00
|
|
|
|
|
|
|
/* Add index to hash. */
|
2017-04-10 11:32:00 +00:00
|
|
|
idx_ptr = XNEW (unsigned int);
|
2014-09-12 22:14:23 +00:00
|
|
|
*idx_ptr = i;
|
2022-10-27 18:45:45 +00:00
|
|
|
str_hash_insert (list->indexes, group_name, idx_ptr, 0);
|
2014-09-12 22:14:23 +00:00
|
|
|
}
|
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
static int
|
|
|
|
free_section_idx (void **slot, void *arg ATTRIBUTE_UNUSED)
|
2014-09-12 22:14:23 +00:00
|
|
|
{
|
2022-10-27 18:45:45 +00:00
|
|
|
string_tuple_t *tuple = *((string_tuple_t **) slot);
|
|
|
|
free ((char *)tuple->value);
|
|
|
|
return 1;
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
|
2018-12-28 15:25:28 +00:00
|
|
|
/* Create symbols for group signature. */
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
void
|
2014-09-12 22:14:23 +00:00
|
|
|
elf_adjust_symtab (void)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
/* Go find section groups. */
|
2018-12-28 15:25:28 +00:00
|
|
|
groups.num_group = 0;
|
|
|
|
groups.head = NULL;
|
2022-10-27 18:45:45 +00:00
|
|
|
groups.indexes = str_htab_create ();
|
|
|
|
bfd_map_over_sections (stdoutput, build_additional_section_info,
|
|
|
|
&groups);
|
2017-04-10 11:32:00 +00:00
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
/* Make the SHT_GROUP sections that describe each section group. We
|
|
|
|
can't set up the section contents here yet, because elf section
|
|
|
|
indices have yet to be calculated. elf.c:set_group_contents does
|
|
|
|
the rest of the work. */
|
2018-12-28 15:25:28 +00:00
|
|
|
for (i = 0; i < groups.num_group; i++)
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
2018-12-28 15:25:28 +00:00
|
|
|
const char *group_name = elf_group_name (groups.head[i]);
|
2012-03-26 19:18:29 +00:00
|
|
|
const char *sec_name;
|
|
|
|
asection *s;
|
|
|
|
flagword flags;
|
|
|
|
struct symbol *sy;
|
|
|
|
|
|
|
|
flags = SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_GROUP;
|
2018-12-28 15:25:28 +00:00
|
|
|
for (s = groups.head[i]; s != NULL; s = elf_next_in_group (s))
|
2012-03-26 19:18:29 +00:00
|
|
|
if ((s->flags ^ flags) & SEC_LINK_ONCE)
|
|
|
|
{
|
|
|
|
flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
|
2018-12-28 15:25:28 +00:00
|
|
|
if (s != groups.head[i])
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
as_warn (_("assuming all members of group `%s' are COMDAT"),
|
|
|
|
group_name);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
sec_name = ".group";
|
2012-03-26 19:18:29 +00:00
|
|
|
s = subseg_force_new (sec_name, 0);
|
|
|
|
if (s == NULL
|
2022-10-27 18:45:45 +00:00
|
|
|
|| !bfd_set_section_flags (s, flags)
|
|
|
|
|| !bfd_set_section_alignment (s, 2))
|
2012-03-26 19:18:29 +00:00
|
|
|
{
|
|
|
|
as_fatal (_("can't create group: %s"),
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
|
|
|
}
|
|
|
|
elf_section_type (s) = SHT_GROUP;
|
|
|
|
|
|
|
|
/* Pass a pointer to the first section in this group. */
|
2018-12-28 15:25:28 +00:00
|
|
|
elf_next_in_group (s) = groups.head[i];
|
|
|
|
elf_sec_group (groups.head[i]) = s;
|
2014-09-12 22:14:23 +00:00
|
|
|
/* Make sure that the signature symbol for the group has the
|
|
|
|
name of the group. */
|
|
|
|
sy = symbol_find_exact (group_name);
|
2022-10-27 18:45:45 +00:00
|
|
|
if (!sy || !symbol_on_chain (sy, symbol_rootP, symbol_lastP))
|
2014-09-12 22:14:23 +00:00
|
|
|
{
|
|
|
|
/* Create the symbol now. */
|
2022-10-27 18:45:45 +00:00
|
|
|
sy = symbol_new (group_name, now_seg, frag_now, 0);
|
2014-09-12 22:14:23 +00:00
|
|
|
#ifdef TE_SOLARIS
|
|
|
|
/* Before Solaris 11 build 154, Sun ld rejects local group
|
|
|
|
signature symbols, so make them weak hidden instead. */
|
|
|
|
symbol_get_bfdsym (sy)->flags |= BSF_WEAK;
|
|
|
|
S_SET_OTHER (sy, STV_HIDDEN);
|
|
|
|
#else
|
|
|
|
symbol_get_obj (sy)->local = 1;
|
|
|
|
#endif
|
|
|
|
symbol_table_insert (sy);
|
|
|
|
}
|
|
|
|
elf_group_id (s) = symbol_get_bfdsym (sy);
|
2022-10-27 18:45:45 +00:00
|
|
|
/* Mark the group signature symbol as used so that it will be
|
|
|
|
included in the symbol table. */
|
|
|
|
symbol_mark_used_in_reloc (sy);
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
2014-09-12 22:14:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_frob_file (void)
|
|
|
|
{
|
|
|
|
bfd_map_over_sections (stdoutput, adjust_stab_sections, NULL);
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
#ifdef elf_tc_final_processing
|
|
|
|
elf_tc_final_processing ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* It removes any unneeded versioned symbols from the symbol table. */
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_frob_file_before_adjust (void)
|
|
|
|
{
|
|
|
|
if (symbol_rootP)
|
|
|
|
{
|
|
|
|
symbolS *symp;
|
|
|
|
|
|
|
|
for (symp = symbol_rootP; symp; symp = symbol_next (symp))
|
2022-10-27 18:45:45 +00:00
|
|
|
{
|
|
|
|
struct elf_obj_sy *sy_obj = symbol_get_obj (symp);
|
|
|
|
int is_defined = !!S_IS_DEFINED (symp);
|
2021-03-21 00:09:18 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (sy_obj->versioned_name)
|
|
|
|
{
|
|
|
|
char *p = strchr (sy_obj->versioned_name->name,
|
|
|
|
ELF_VER_CHR);
|
2021-03-21 00:09:18 +00:00
|
|
|
|
2022-10-27 18:45:45 +00:00
|
|
|
if (sy_obj->rename)
|
|
|
|
{
|
|
|
|
/* The @@@ syntax is a special case. If the symbol is
|
|
|
|
not defined, 2 `@'s will be removed from the
|
|
|
|
versioned_name. Otherwise, 1 `@' will be removed. */
|
|
|
|
size_t l = strlen (&p[3]) + 1;
|
|
|
|
memmove (&p[1 + is_defined], &p[3], l);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!is_defined)
|
|
|
|
{
|
|
|
|
/* Verify that the name isn't using the @@ syntax--this
|
|
|
|
is reserved for definitions of the default version
|
|
|
|
to link against. */
|
|
|
|
if (!sy_obj->rename && p[1] == ELF_VER_CHR)
|
|
|
|
{
|
|
|
|
as_bad (_("invalid attempt to declare external "
|
|
|
|
"version name as default in symbol `%s'"),
|
|
|
|
sy_obj->versioned_name->name);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Only one version symbol is allowed for undefined
|
|
|
|
symbol. */
|
|
|
|
if (sy_obj->versioned_name->next)
|
|
|
|
{
|
|
|
|
as_bad (_("multiple versions [`%s'|`%s'] for "
|
|
|
|
"symbol `%s'"),
|
|
|
|
sy_obj->versioned_name->name,
|
|
|
|
sy_obj->versioned_name->next->name,
|
|
|
|
S_GET_NAME (symp));
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
sy_obj->rename = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If there was .symver or .weak, but symbol was neither
|
|
|
|
defined nor used anywhere, remove it. */
|
|
|
|
if (!is_defined
|
|
|
|
&& (sy_obj->versioned_name || S_IS_WEAK (symp))
|
|
|
|
&& symbol_used_p (symp) == 0
|
|
|
|
&& symbol_used_in_reloc_p (symp) == 0)
|
|
|
|
symbol_remove (symp, &symbol_rootP, &symbol_lastP);
|
|
|
|
}
|
2012-03-26 19:18:29 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* It is required that we let write_relocs have the opportunity to
|
|
|
|
optimize away fixups before output has begun, since it is possible
|
|
|
|
to eliminate all fixups for a section and thus we never should
|
|
|
|
have generated the relocation section. */
|
|
|
|
|
|
|
|
void
|
|
|
|
elf_frob_file_after_relocs (void)
|
|
|
|
{
|
2018-12-28 15:25:28 +00:00
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
/* Set SHT_GROUP section size. */
|
|
|
|
for (i = 0; i < groups.num_group; i++)
|
|
|
|
{
|
|
|
|
asection *s, *head, *group;
|
|
|
|
bfd_size_type size;
|
|
|
|
|
|
|
|
head = groups.head[i];
|
|
|
|
size = 4;
|
|
|
|
for (s = head; s != NULL; s = elf_next_in_group (s))
|
|
|
|
size += (s->flags & SEC_RELOC) != 0 ? 8 : 4;
|
|
|
|
|
|
|
|
group = elf_sec_group (head);
|
|
|
|
subseg_set (group, 0);
|
2022-10-27 18:45:45 +00:00
|
|
|
bfd_set_section_size (group, size);
|
2018-12-28 15:25:28 +00:00
|
|
|
group->contents = (unsigned char *) frag_more (size);
|
|
|
|
frag_now->fr_fix = frag_now_fix_octets ();
|
|
|
|
frag_wane (frag_now);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Cleanup hash. */
|
2022-10-27 18:45:45 +00:00
|
|
|
htab_traverse (groups.indexes, free_section_idx, NULL);
|
|
|
|
htab_delete (groups.indexes);
|
2018-12-28 15:25:28 +00:00
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
if (ECOFF_DEBUGGING)
|
|
|
|
/* Generate the ECOFF debugging information. */
|
|
|
|
{
|
|
|
|
const struct ecoff_debug_swap *debug_swap;
|
|
|
|
struct ecoff_debug_info debug;
|
|
|
|
char *buf;
|
|
|
|
asection *sec;
|
|
|
|
|
|
|
|
debug_swap
|
|
|
|
= get_elf_backend_data (stdoutput)->elf_backend_ecoff_debug_swap;
|
|
|
|
know (debug_swap != NULL);
|
|
|
|
ecoff_build_debug (&debug.symbolic_header, &buf, debug_swap);
|
|
|
|
|
|
|
|
/* Set up the pointers in debug. */
|
|
|
|
#define SET(ptr, offset, type) \
|
|
|
|
debug.ptr = (type) (buf + debug.symbolic_header.offset)
|
|
|
|
|
|
|
|
SET (line, cbLineOffset, unsigned char *);
|
|
|
|
SET (external_dnr, cbDnOffset, void *);
|
|
|
|
SET (external_pdr, cbPdOffset, void *);
|
|
|
|
SET (external_sym, cbSymOffset, void *);
|
|
|
|
SET (external_opt, cbOptOffset, void *);
|
|
|
|
SET (external_aux, cbAuxOffset, union aux_ext *);
|
|
|
|
SET (ss, cbSsOffset, char *);
|
|
|
|
SET (external_fdr, cbFdOffset, void *);
|
|
|
|
SET (external_rfd, cbRfdOffset, void *);
|
|
|
|
/* ssext and external_ext are set up just below. */
|
|
|
|
|
|
|
|
#undef SET
|
|
|
|
|
|
|
|
/* Set up the external symbols. */
|
|
|
|
debug.ssext = debug.ssext_end = NULL;
|
|
|
|
debug.external_ext = debug.external_ext_end = NULL;
|
2022-10-27 18:45:45 +00:00
|
|
|
if (! bfd_ecoff_debug_externals (stdoutput, &debug, debug_swap, true,
|
2012-03-26 19:18:29 +00:00
|
|
|
elf_get_extr, elf_set_index))
|
|
|
|
as_fatal (_("failed to set up debugging information: %s"),
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
|
|
|
|
|
|
|
sec = bfd_get_section_by_name (stdoutput, ".mdebug");
|
|
|
|
gas_assert (sec != NULL);
|
|
|
|
|
|
|
|
know (!stdoutput->output_has_begun);
|
|
|
|
|
|
|
|
/* We set the size of the section, call bfd_set_section_contents
|
|
|
|
to force the ELF backend to allocate a file position, and then
|
|
|
|
write out the data. FIXME: Is this really the best way to do
|
|
|
|
this? */
|
2022-10-27 18:45:45 +00:00
|
|
|
bfd_set_section_size (sec, bfd_ecoff_debug_size (stdoutput, &debug,
|
|
|
|
debug_swap));
|
2012-03-26 19:18:29 +00:00
|
|
|
|
|
|
|
/* Pass BUF to bfd_set_section_contents because this will
|
|
|
|
eventually become a call to fwrite, and ISO C prohibits
|
|
|
|
passing a NULL pointer to a stdio function even if the
|
|
|
|
pointer will not be used. */
|
|
|
|
if (! bfd_set_section_contents (stdoutput, sec, buf, 0, 0))
|
|
|
|
as_fatal (_("can't start writing .mdebug section: %s"),
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
|
|
|
|
|
|
|
know (stdoutput->output_has_begun);
|
|
|
|
know (sec->filepos != 0);
|
|
|
|
|
|
|
|
if (! bfd_ecoff_write_debug (stdoutput, &debug, debug_swap,
|
|
|
|
sec->filepos))
|
|
|
|
as_fatal (_("could not write .mdebug section: %s"),
|
|
|
|
bfd_errmsg (bfd_get_error ()));
|
|
|
|
}
|
|
|
|
#endif /* NEED_ECOFF_DEBUG */
|
|
|
|
}
|
|
|
|
|
2014-09-12 22:14:23 +00:00
|
|
|
static void
|
|
|
|
elf_generate_asm_lineno (void)
|
|
|
|
{
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
if (ECOFF_DEBUGGING)
|
|
|
|
ecoff_generate_asm_lineno ();
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
elf_process_stab (segT sec ATTRIBUTE_UNUSED,
|
|
|
|
int what ATTRIBUTE_UNUSED,
|
|
|
|
const char *string ATTRIBUTE_UNUSED,
|
|
|
|
int type ATTRIBUTE_UNUSED,
|
|
|
|
int other ATTRIBUTE_UNUSED,
|
|
|
|
int desc ATTRIBUTE_UNUSED)
|
|
|
|
{
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
if (ECOFF_DEBUGGING)
|
|
|
|
ecoff_stab (sec, what, string, type, other, desc);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2012-03-26 19:18:29 +00:00
|
|
|
static int
|
|
|
|
elf_separate_stab_sections (void)
|
|
|
|
{
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
return (!ECOFF_DEBUGGING);
|
|
|
|
#else
|
|
|
|
return 1;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
elf_init_stab_section (segT seg)
|
|
|
|
{
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
if (!ECOFF_DEBUGGING)
|
|
|
|
#endif
|
|
|
|
obj_elf_init_stab_section (seg);
|
|
|
|
}
|
|
|
|
|
|
|
|
const struct format_ops elf_format_ops =
|
|
|
|
{
|
|
|
|
bfd_target_elf_flavour,
|
|
|
|
0, /* dfl_leading_underscore */
|
|
|
|
1, /* emit_section_symbols */
|
|
|
|
elf_begin,
|
|
|
|
elf_file_symbol,
|
|
|
|
elf_frob_symbol,
|
|
|
|
elf_frob_file,
|
|
|
|
elf_frob_file_before_adjust,
|
|
|
|
0, /* obj_frob_file_before_fix */
|
|
|
|
elf_frob_file_after_relocs,
|
|
|
|
elf_s_get_size, elf_s_set_size,
|
|
|
|
elf_s_get_align, elf_s_set_align,
|
|
|
|
elf_s_get_other,
|
|
|
|
elf_s_set_other,
|
|
|
|
0, /* s_get_desc */
|
|
|
|
0, /* s_set_desc */
|
|
|
|
0, /* s_get_type */
|
|
|
|
0, /* s_set_type */
|
|
|
|
elf_copy_symbol_attributes,
|
2014-09-12 22:14:23 +00:00
|
|
|
elf_generate_asm_lineno,
|
|
|
|
elf_process_stab,
|
2012-03-26 19:18:29 +00:00
|
|
|
elf_separate_stab_sections,
|
|
|
|
elf_init_stab_section,
|
|
|
|
elf_sec_sym_ok_for_reloc,
|
|
|
|
elf_pop_insert,
|
|
|
|
#ifdef NEED_ECOFF_DEBUG
|
|
|
|
elf_ecoff_set_ext,
|
|
|
|
#else
|
|
|
|
0, /* ecoff_set_ext */
|
|
|
|
#endif
|
|
|
|
elf_obj_read_begin_hook,
|
2014-09-12 22:14:23 +00:00
|
|
|
elf_obj_symbol_new_hook,
|
2022-10-27 18:45:45 +00:00
|
|
|
elf_obj_symbol_clone_hook,
|
2014-09-12 22:14:23 +00:00
|
|
|
elf_adjust_symtab
|
2012-03-26 19:18:29 +00:00
|
|
|
};
|