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/* Generic symbol-table support for the BFD library.

/* Generic symbol-table support for the BFD library.

   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,

   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,

   2000, 2001, 2002, 2003, 2004, 2007

   2000, 2001, 2002, 2003, 2004, 2007

   Free Software Foundation, Inc.

   Free Software Foundation, Inc.

   Written by Cygnus Support.

   Written by Cygnus Support.

   This file is part of BFD, the Binary File Descriptor library.

   This file is part of BFD, the Binary File Descriptor library.

   This program is free software; you can redistribute it and/or modify

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   along with this program; if not, write to the Free Software

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,

   MA 02110-1301, USA.  */

   MA 02110-1301, USA.  */

/*

/*

SECTION

SECTION

        Symbols

        Symbols

        BFD tries to maintain as much symbol information as it can when

        BFD tries to maintain as much symbol information as it can when

        it moves information from file to file. BFD passes information

        it moves information from file to file. BFD passes information

        to applications though the <<asymbol>> structure. When the

        to applications though the <<asymbol>> structure. When the

        application requests the symbol table, BFD reads the table in

        application requests the symbol table, BFD reads the table in

        the native form and translates parts of it into the internal

        the native form and translates parts of it into the internal

        format. To maintain more than the information passed to

        format. To maintain more than the information passed to

        applications, some targets keep some information ``behind the

        applications, some targets keep some information ``behind the

        scenes'' in a structure only the particular back end knows

        scenes'' in a structure only the particular back end knows

        about. For example, the coff back end keeps the original

        about. For example, the coff back end keeps the original

        symbol table structure as well as the canonical structure when

        symbol table structure as well as the canonical structure when

        a BFD is read in. On output, the coff back end can reconstruct

        a BFD is read in. On output, the coff back end can reconstruct

        the output symbol table so that no information is lost, even

        the output symbol table so that no information is lost, even

        information unique to coff which BFD doesn't know or

        information unique to coff which BFD doesn't know or

        understand. If a coff symbol table were read, but were written

        understand. If a coff symbol table were read, but were written

        through an a.out back end, all the coff specific information

        through an a.out back end, all the coff specific information

        would be lost. The symbol table of a BFD

        would be lost. The symbol table of a BFD

        is not necessarily read in until a canonicalize request is

        is not necessarily read in until a canonicalize request is

        made. Then the BFD back end fills in a table provided by the

        made. Then the BFD back end fills in a table provided by the

        application with pointers to the canonical information.  To

        application with pointers to the canonical information.  To

        output symbols, the application provides BFD with a table of

        output symbols, the application provides BFD with a table of

        pointers to pointers to <<asymbol>>s. This allows applications

        pointers to pointers to <<asymbol>>s. This allows applications

        like the linker to output a symbol as it was read, since the ``behind

        like the linker to output a symbol as it was read, since the ``behind

        the scenes'' information will be still available.

        the scenes'' information will be still available.

@menu

@menu

@* Reading Symbols::

@* Reading Symbols::

@* Writing Symbols::

@* Writing Symbols::

@* Mini Symbols::

@* Mini Symbols::

@* typedef asymbol::

@* typedef asymbol::

@* symbol handling functions::

@* symbol handling functions::

@end menu

@end menu

INODE

INODE

Reading Symbols, Writing Symbols, Symbols, Symbols

Reading Symbols, Writing Symbols, Symbols, Symbols

SUBSECTION

SUBSECTION

        Reading symbols

        Reading symbols

        There are two stages to reading a symbol table from a BFD:

        There are two stages to reading a symbol table from a BFD:

        allocating storage, and the actual reading process. This is an

        allocating storage, and the actual reading process. This is an

        excerpt from an application which reads the symbol table:

        excerpt from an application which reads the symbol table:

|         long storage_needed;

|         long storage_needed;

|         asymbol **symbol_table;

|         asymbol **symbol_table;

|         long number_of_symbols;

|         long number_of_symbols;

|         long i;

|         long i;

|

|

|         storage_needed = bfd_get_symtab_upper_bound (abfd);

|         storage_needed = bfd_get_symtab_upper_bound (abfd);

|

|

|         if (storage_needed < 0)

|         if (storage_needed < 0)

|           FAIL

|           FAIL

|

|

|         if (storage_needed == 0)

|         if (storage_needed == 0)

|           return;

|           return;

|

|

|         symbol_table = xmalloc (storage_needed);

|         symbol_table = xmalloc (storage_needed);

|           ...

|           ...

|         number_of_symbols =

|         number_of_symbols =

|            bfd_canonicalize_symtab (abfd, symbol_table);

|            bfd_canonicalize_symtab (abfd, symbol_table);

|

|

|         if (number_of_symbols < 0)

|         if (number_of_symbols < 0)

|           FAIL

|           FAIL

|

|

|         for (i = 0; i < number_of_symbols; i++)

|         for (i = 0; i < number_of_symbols; i++)

|           process_symbol (symbol_table[i]);

|           process_symbol (symbol_table[i]);

        All storage for the symbols themselves is in an objalloc

        All storage for the symbols themselves is in an objalloc

        connected to the BFD; it is freed when the BFD is closed.

        connected to the BFD; it is freed when the BFD is closed.

INODE

INODE

Writing Symbols, Mini Symbols, Reading Symbols, Symbols

Writing Symbols, Mini Symbols, Reading Symbols, Symbols

SUBSECTION

SUBSECTION

        Writing symbols

        Writing symbols

        Writing of a symbol table is automatic when a BFD open for

        Writing of a symbol table is automatic when a BFD open for

        writing is closed. The application attaches a vector of

        writing is closed. The application attaches a vector of

        pointers to pointers to symbols to the BFD being written, and

        pointers to pointers to symbols to the BFD being written, and

        fills in the symbol count. The close and cleanup code reads

        fills in the symbol count. The close and cleanup code reads

        through the table provided and performs all the necessary

        through the table provided and performs all the necessary

        operations. The BFD output code must always be provided with an

        operations. The BFD output code must always be provided with an

        ``owned'' symbol: one which has come from another BFD, or one

        ``owned'' symbol: one which has come from another BFD, or one

        which has been created using <<bfd_make_empty_symbol>>.  Here is an

        which has been created using <<bfd_make_empty_symbol>>.  Here is an

        example showing the creation of a symbol table with only one element:

        example showing the creation of a symbol table with only one element:

|       #include "bfd.h"

|       #include "bfd.h"

|       int main (void)

|       int main (void)

|       {

|       {

|         bfd *abfd;

|         bfd *abfd;

|         asymbol *ptrs[2];

|         asymbol *ptrs[2];

|         asymbol *new;

|         asymbol *new;

|

|

|         abfd = bfd_openw ("foo","a.out-sunos-big");

|         abfd = bfd_openw ("foo","a.out-sunos-big");

|         bfd_set_format (abfd, bfd_object);

|         bfd_set_format (abfd, bfd_object);

|         new = bfd_make_empty_symbol (abfd);

|         new = bfd_make_empty_symbol (abfd);

|         new->name = "dummy_symbol";

|         new->name = "dummy_symbol";

|         new->section = bfd_make_section_old_way (abfd, ".text");

|         new->section = bfd_make_section_old_way (abfd, ".text");

|         new->flags = BSF_GLOBAL;

|         new->flags = BSF_GLOBAL;

|         new->value = 0x12345;

|         new->value = 0x12345;

|

|

|         ptrs[0] = new;

|         ptrs[0] = new;

|         ptrs[1] = 0;

|         ptrs[1] = 0;

|

|

|         bfd_set_symtab (abfd, ptrs, 1);

|         bfd_set_symtab (abfd, ptrs, 1);

|         bfd_close (abfd);

|         bfd_close (abfd);

|         return 0;

|         return 0;

|       }

|       }

|

|

|       ./makesym

|       ./makesym

|       nm foo

|       nm foo

|       00012345 A dummy_symbol

|       00012345 A dummy_symbol

        Many formats cannot represent arbitrary symbol information; for

        Many formats cannot represent arbitrary symbol information; for

        instance, the <<a.out>> object format does not allow an

        instance, the <<a.out>> object format does not allow an

        arbitrary number of sections. A symbol pointing to a section

        arbitrary number of sections. A symbol pointing to a section

        which is not one  of <<.text>>, <<.data>> or <<.bss>> cannot

        which is not one  of <<.text>>, <<.data>> or <<.bss>> cannot

        be described.

        be described.

INODE

INODE

Mini Symbols, typedef asymbol, Writing Symbols, Symbols

Mini Symbols, typedef asymbol, Writing Symbols, Symbols

SUBSECTION

SUBSECTION

        Mini Symbols

        Mini Symbols

        Mini symbols provide read-only access to the symbol table.

        Mini symbols provide read-only access to the symbol table.

        They use less memory space, but require more time to access.

        They use less memory space, but require more time to access.

        They can be useful for tools like nm or objdump, which may

        They can be useful for tools like nm or objdump, which may

        have to handle symbol tables of extremely large executables.

        have to handle symbol tables of extremely large executables.

        The <<bfd_read_minisymbols>> function will read the symbols

        The <<bfd_read_minisymbols>> function will read the symbols

        into memory in an internal form.  It will return a <<void *>>

        into memory in an internal form.  It will return a <<void *>>

        pointer to a block of memory, a symbol count, and the size of

        pointer to a block of memory, a symbol count, and the size of

        each symbol.  The pointer is allocated using <<malloc>>, and

        each symbol.  The pointer is allocated using <<malloc>>, and

        should be freed by the caller when it is no longer needed.

        should be freed by the caller when it is no longer needed.

        The function <<bfd_minisymbol_to_symbol>> will take a pointer

        The function <<bfd_minisymbol_to_symbol>> will take a pointer

        to a minisymbol, and a pointer to a structure returned by

        to a minisymbol, and a pointer to a structure returned by

        <<bfd_make_empty_symbol>>, and return a <<asymbol>> structure.

        <<bfd_make_empty_symbol>>, and return a <<asymbol>> structure.

        The return value may or may not be the same as the value from

        The return value may or may not be the same as the value from

        <<bfd_make_empty_symbol>> which was passed in.

        <<bfd_make_empty_symbol>> which was passed in.

*/

*/

/*

/*

DOCDD

DOCDD

INODE

INODE

typedef asymbol, symbol handling functions, Mini Symbols, Symbols

typedef asymbol, symbol handling functions, Mini Symbols, Symbols

*/

*/

/*

/*

SUBSECTION

SUBSECTION

        typedef asymbol

        typedef asymbol

        An <<asymbol>> has the form:

        An <<asymbol>> has the form:

*/

*/

/*

/*

CODE_FRAGMENT

CODE_FRAGMENT

.

.

.typedef struct bfd_symbol

.typedef struct bfd_symbol

.{

.{

.  {* A pointer to the BFD which owns the symbol. This information

.  {* A pointer to the BFD which owns the symbol. This information

.     is necessary so that a back end can work out what additional

.     is necessary so that a back end can work out what additional

.     information (invisible to the application writer) is carried

.     information (invisible to the application writer) is carried

.     with the symbol.

.     with the symbol.

.

.

.     This field is *almost* redundant, since you can use section->owner

.     This field is *almost* redundant, since you can use section->owner

.     instead, except that some symbols point to the global sections

.     instead, except that some symbols point to the global sections

.     bfd_{abs,com,und}_section.  This could be fixed by making

.     bfd_{abs,com,und}_section.  This could be fixed by making

.     these globals be per-bfd (or per-target-flavor).  FIXME.  *}

.     these globals be per-bfd (or per-target-flavor).  FIXME.  *}

.  struct bfd *the_bfd; {* Use bfd_asymbol_bfd(sym) to access this field.  *}

.  struct bfd *the_bfd; {* Use bfd_asymbol_bfd(sym) to access this field.  *}

.

.

.  {* The text of the symbol. The name is left alone, and not copied; the

.  {* The text of the symbol. The name is left alone, and not copied; the

.     application may not alter it.  *}

.     application may not alter it.  *}

.  const char *name;

.  const char *name;

.

.

.  {* The value of the symbol.  This really should be a union of a

.  {* The value of the symbol.  This really should be a union of a

.     numeric value with a pointer, since some flags indicate that

.     numeric value with a pointer, since some flags indicate that

.     a pointer to another symbol is stored here.  *}

.     a pointer to another symbol is stored here.  *}

.  symvalue value;

.  symvalue value;

.

.

.  {* Attributes of a symbol.  *}

.  {* Attributes of a symbol.  *}

.#define BSF_NO_FLAGS    0x00

.#define BSF_NO_FLAGS    0x00

.

.

.  {* The symbol has local scope; <<static>> in <<C>>. The value

.  {* The symbol has local scope; <<static>> in <<C>>. The value

.     is the offset into the section of the data.  *}

.     is the offset into the section of the data.  *}

.#define BSF_LOCAL      0x01

.#define BSF_LOCAL      0x01

.

.

.  {* The symbol has global scope; initialized data in <<C>>. The

.  {* The symbol has global scope; initialized data in <<C>>. The

.     value is the offset into the section of the data.  *}

.     value is the offset into the section of the data.  *}

.#define BSF_GLOBAL     0x02

.#define BSF_GLOBAL     0x02

.

.

.  {* The symbol has global scope and is exported. The value is

.  {* The symbol has global scope and is exported. The value is

.     the offset into the section of the data.  *}

.     the offset into the section of the data.  *}

.#define BSF_EXPORT     BSF_GLOBAL {* No real difference.  *}

.#define BSF_EXPORT     BSF_GLOBAL {* No real difference.  *}

.

.

.  {* A normal C symbol would be one of:

.  {* A normal C symbol would be one of:

.     <<BSF_LOCAL>>, <<BSF_FORT_COMM>>,  <<BSF_UNDEFINED>> or

.     <<BSF_LOCAL>>, <<BSF_FORT_COMM>>,  <<BSF_UNDEFINED>> or

.     <<BSF_GLOBAL>>.  *}

.     <<BSF_GLOBAL>>.  *}

.

.

.  {* The symbol is a debugging record. The value has an arbitrary

.  {* The symbol is a debugging record. The value has an arbitrary

.     meaning, unless BSF_DEBUGGING_RELOC is also set.  *}

.     meaning, unless BSF_DEBUGGING_RELOC is also set.  *}

.#define BSF_DEBUGGING  0x08

.#define BSF_DEBUGGING  0x08

.

.

.  {* The symbol denotes a function entry point.  Used in ELF,

.  {* The symbol denotes a function entry point.  Used in ELF,

.     perhaps others someday.  *}

.     perhaps others someday.  *}

.#define BSF_FUNCTION    0x10

.#define BSF_FUNCTION    0x10

.

.

.  {* Used by the linker.  *}

.  {* Used by the linker.  *}

.#define BSF_KEEP        0x20

.#define BSF_KEEP        0x20

.#define BSF_KEEP_G      0x40

.#define BSF_KEEP_G      0x40

.

.

.  {* A weak global symbol, overridable without warnings by

.  {* A weak global symbol, overridable without warnings by

.     a regular global symbol of the same name.  *}

.     a regular global symbol of the same name.  *}

.#define BSF_WEAK        0x80

.#define BSF_WEAK        0x80

.

.

.  {* This symbol was created to point to a section, e.g. ELF's

.  {* This symbol was created to point to a section, e.g. ELF's

.     STT_SECTION symbols.  *}

.     STT_SECTION symbols.  *}

.#define BSF_SECTION_SYM 0x100

.#define BSF_SECTION_SYM 0x100

.

.

.  {* The symbol used to be a common symbol, but now it is

.  {* The symbol used to be a common symbol, but now it is

.     allocated.  *}

.     allocated.  *}

.#define BSF_OLD_COMMON  0x200

.#define BSF_OLD_COMMON  0x200

.

.

.  {* The default value for common data.  *}

.  {* The default value for common data.  *}

.#define BFD_FORT_COMM_DEFAULT_VALUE 0

.#define BFD_FORT_COMM_DEFAULT_VALUE 0

.

.

.  {* In some files the type of a symbol sometimes alters its

.  {* In some files the type of a symbol sometimes alters its

.     location in an output file - ie in coff a <<ISFCN>> symbol

.     location in an output file - ie in coff a <<ISFCN>> symbol

.     which is also <<C_EXT>> symbol appears where it was

.     which is also <<C_EXT>> symbol appears where it was

.     declared and not at the end of a section.  This bit is set

.     declared and not at the end of a section.  This bit is set

.     by the target BFD part to convey this information.  *}

.     by the target BFD part to convey this information.  *}

.#define BSF_NOT_AT_END    0x400

.#define BSF_NOT_AT_END    0x400

.

.

.  {* Signal that the symbol is the label of constructor section.  *}

.  {* Signal that the symbol is the label of constructor section.  *}

.#define BSF_CONSTRUCTOR   0x800

.#define BSF_CONSTRUCTOR   0x800

.

.

.  {* Signal that the symbol is a warning symbol.  The name is a

.  {* Signal that the symbol is a warning symbol.  The name is a

.     warning.  The name of the next symbol is the one to warn about;

.     warning.  The name of the next symbol is the one to warn about;

.     if a reference is made to a symbol with the same name as the next

.     if a reference is made to a symbol with the same name as the next

.     symbol, a warning is issued by the linker.  *}

.     symbol, a warning is issued by the linker.  *}

.#define BSF_WARNING       0x1000

.#define BSF_WARNING       0x1000

.

.

.  {* Signal that the symbol is indirect.  This symbol is an indirect

.  {* Signal that the symbol is indirect.  This symbol is an indirect

.     pointer to the symbol with the same name as the next symbol.  *}

.     pointer to the symbol with the same name as the next symbol.  *}

.#define BSF_INDIRECT      0x2000

.#define BSF_INDIRECT      0x2000

.

.

.  {* BSF_FILE marks symbols that contain a file name.  This is used

.  {* BSF_FILE marks symbols that contain a file name.  This is used

.     for ELF STT_FILE symbols.  *}

.     for ELF STT_FILE symbols.  *}

.#define BSF_FILE          0x4000

.#define BSF_FILE          0x4000

.

.

.  {* Symbol is from dynamic linking information.  *}

.  {* Symbol is from dynamic linking information.  *}

.#define BSF_DYNAMIC       0x8000

.#define BSF_DYNAMIC       0x8000

.

.

.  {* The symbol denotes a data object.  Used in ELF, and perhaps

.  {* The symbol denotes a data object.  Used in ELF, and perhaps

.     others someday.  *}

.     others someday.  *}

.#define BSF_OBJECT        0x10000

.#define BSF_OBJECT        0x10000

.

.

.  {* This symbol is a debugging symbol.  The value is the offset

.  {* This symbol is a debugging symbol.  The value is the offset

.     into the section of the data.  BSF_DEBUGGING should be set

.     into the section of the data.  BSF_DEBUGGING should be set

.     as well.  *}

.     as well.  *}

.#define BSF_DEBUGGING_RELOC 0x20000

.#define BSF_DEBUGGING_RELOC 0x20000

.

.

.  {* This symbol is thread local.  Used in ELF.  *}

.  {* This symbol is thread local.  Used in ELF.  *}

.#define BSF_THREAD_LOCAL  0x40000

.#define BSF_THREAD_LOCAL  0x40000

.

.

.  {* This symbol represents a complex relocation expression,

.  {* This symbol represents a complex relocation expression,

.     with the expression tree serialized in the symbol name.  *}

.     with the expression tree serialized in the symbol name.  *}

.#define BSF_RELC 0x80000

.#define BSF_RELC 0x80000

.

.

.  {* This symbol represents a signed complex relocation expression,

.  {* This symbol represents a signed complex relocation expression,

.     with the expression tree serialized in the symbol name.  *}

.     with the expression tree serialized in the symbol name.  *}

.#define BSF_SRELC 0x100000

.#define BSF_SRELC 0x100000

.

.

.  flagword flags;

.  flagword flags;

.

.

.  {* A pointer to the section to which this symbol is

.  {* A pointer to the section to which this symbol is

.     relative.  This will always be non NULL, there are special

.     relative.  This will always be non NULL, there are special

.     sections for undefined and absolute symbols.  *}

.     sections for undefined and absolute symbols.  *}

.  struct bfd_section *section;

.  struct bfd_section *section;

.

.

.  {* Back end special data.  *}

.  {* Back end special data.  *}

.  union

.  union

.    {

.    {

.      void *p;

.      void *p;

.      bfd_vma i;

.      bfd_vma i;

.    }

.    }

.  udata;

.  udata;

.}

.}

.asymbol;

.asymbol;

.

.

*/

*/

#include "sysdep.h"

#include "sysdep.h"

#include "bfd.h"

#include "bfd.h"

#include "libbfd.h"

#include "libbfd.h"

#include "safe-ctype.h"

#include "safe-ctype.h"

#include "bfdlink.h"

#include "bfdlink.h"

#include "aout/stab_gnu.h"

#include "aout/stab_gnu.h"

/*

/*

DOCDD

DOCDD

INODE

INODE

symbol handling functions,  , typedef asymbol, Symbols

symbol handling functions,  , typedef asymbol, Symbols

SUBSECTION

SUBSECTION

        Symbol handling functions

        Symbol handling functions

*/

*/

/*

/*

FUNCTION

FUNCTION

        bfd_get_symtab_upper_bound

        bfd_get_symtab_upper_bound

DESCRIPTION

DESCRIPTION

        Return the number of bytes required to store a vector of pointers

        Return the number of bytes required to store a vector of pointers

        to <<asymbols>> for all the symbols in the BFD @var{abfd},

        to <<asymbols>> for all the symbols in the BFD @var{abfd},

        including a terminal NULL pointer. If there are no symbols in

        including a terminal NULL pointer. If there are no symbols in

        the BFD, then return 0.  If an error occurs, return -1.

        the BFD, then return 0.  If an error occurs, return -1.

.#define bfd_get_symtab_upper_bound(abfd) \

.#define bfd_get_symtab_upper_bound(abfd) \

.     BFD_SEND (abfd, _bfd_get_symtab_upper_bound, (abfd))

.     BFD_SEND (abfd, _bfd_get_symtab_upper_bound, (abfd))

.

.

*/

*/

/*

/*

FUNCTION

FUNCTION

        bfd_is_local_label

        bfd_is_local_label

SYNOPSIS

SYNOPSIS

        bfd_boolean bfd_is_local_label (bfd *abfd, asymbol *sym);

        bfd_boolean bfd_is_local_label (bfd *abfd, asymbol *sym);

DESCRIPTION

DESCRIPTION

        Return TRUE if the given symbol @var{sym} in the BFD @var{abfd} is

        Return TRUE if the given symbol @var{sym} in the BFD @var{abfd} is

        a compiler generated local label, else return FALSE.

        a compiler generated local label, else return FALSE.

*/

*/

bfd_boolean

bfd_boolean

bfd_is_local_label (bfd *abfd, asymbol *sym)

bfd_is_local_label (bfd *abfd, asymbol *sym)

{

{

  /* The BSF_SECTION_SYM check is needed for IA-64, where every label that

  /* The BSF_SECTION_SYM check is needed for IA-64, where every label that

     starts with '.' is local.  This would accidentally catch section names

     starts with '.' is local.  This would accidentally catch section names

     if we didn't reject them here.  */

     if we didn't reject them here.  */

  if ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_FILE | BSF_SECTION_SYM)) != 0)

  if ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_FILE | BSF_SECTION_SYM)) != 0)

    return FALSE;

    return FALSE;

  if (sym->name == NULL)

  if (sym->name == NULL)

    return FALSE;

    return FALSE;

  return bfd_is_local_label_name (abfd, sym->name);

  return bfd_is_local_label_name (abfd, sym->name);

}

}

/*

/*

FUNCTION

FUNCTION

        bfd_is_local_label_name

        bfd_is_local_label_name

SYNOPSIS

SYNOPSIS

        bfd_boolean bfd_is_local_label_name (bfd *abfd, const char *name);

        bfd_boolean bfd_is_local_label_name (bfd *abfd, const char *name);

DESCRIPTION

DESCRIPTION

        Return TRUE if a symbol with the name @var{name} in the BFD

        Return TRUE if a symbol with the name @var{name} in the BFD

        @var{abfd} is a compiler generated local label, else return

        @var{abfd} is a compiler generated local label, else return

        FALSE.  This just checks whether the name has the form of a

        FALSE.  This just checks whether the name has the form of a

        local label.

        local label.

.#define bfd_is_local_label_name(abfd, name) \

.#define bfd_is_local_label_name(abfd, name) \

.  BFD_SEND (abfd, _bfd_is_local_label_name, (abfd, name))

.  BFD_SEND (abfd, _bfd_is_local_label_name, (abfd, name))

.

.

*/

*/

/*

/*

FUNCTION

FUNCTION

        bfd_is_target_special_symbol

        bfd_is_target_special_symbol

SYNOPSIS

SYNOPSIS

        bfd_boolean bfd_is_target_special_symbol (bfd *abfd, asymbol *sym);

        bfd_boolean bfd_is_target_special_symbol (bfd *abfd, asymbol *sym);

DESCRIPTION

DESCRIPTION

        Return TRUE iff a symbol @var{sym} in the BFD @var{abfd} is something

        Return TRUE iff a symbol @var{sym} in the BFD @var{abfd} is something

        special to the particular target represented by the BFD.  Such symbols

        special to the particular target represented by the BFD.  Such symbols

        should normally not be mentioned to the user.

        should normally not be mentioned to the user.

.#define bfd_is_target_special_symbol(abfd, sym) \

.#define bfd_is_target_special_symbol(abfd, sym) \

.  BFD_SEND (abfd, _bfd_is_target_special_symbol, (abfd, sym))

.  BFD_SEND (abfd, _bfd_is_target_special_symbol, (abfd, sym))

.

.

*/

*/

/*

/*

FUNCTION

FUNCTION

        bfd_canonicalize_symtab

        bfd_canonicalize_symtab

DESCRIPTION

DESCRIPTION

        Read the symbols from the BFD @var{abfd}, and fills in

        Read the symbols from the BFD @var{abfd}, and fills in

        the vector @var{location} with pointers to the symbols and

        the vector @var{location} with pointers to the symbols and

        a trailing NULL.

        a trailing NULL.

        Return the actual number of symbol pointers, not

        Return the actual number of symbol pointers, not

        including the NULL.

        including the NULL.

.#define bfd_canonicalize_symtab(abfd, location) \

.#define bfd_canonicalize_symtab(abfd, location) \

.  BFD_SEND (abfd, _bfd_canonicalize_symtab, (abfd, location))

.  BFD_SEND (abfd, _bfd_canonicalize_symtab, (abfd, location))

.

.

*/

*/

/*

/*

FUNCTION

FUNCTION

        bfd_set_symtab

        bfd_set_symtab

SYNOPSIS

SYNOPSIS

        bfd_boolean bfd_set_symtab

        bfd_boolean bfd_set_symtab

          (bfd *abfd, asymbol **location, unsigned int count);

          (bfd *abfd, asymbol **location, unsigned int count);

DESCRIPTION

DESCRIPTION

        Arrange that when the output BFD @var{abfd} is closed,

        Arrange that when the output BFD @var{abfd} is closed,

        the table @var{location} of @var{count} pointers to symbols

        the table @var{location} of @var{count} pointers to symbols

        will be written.

        will be written.

*/

*/

bfd_boolean

bfd_boolean

bfd_set_symtab (bfd *abfd, asymbol **location, unsigned int symcount)

bfd_set_symtab (bfd *abfd, asymbol **location, unsigned int symcount)

{

{

  if (abfd->format != bfd_object || bfd_read_p (abfd))

  if (abfd->format != bfd_object || bfd_read_p (abfd))

    {

    {

      bfd_set_error (bfd_error_invalid_operation);

      bfd_set_error (bfd_error_invalid_operation);

      return FALSE;

      return FALSE;

    }

    }

  bfd_get_outsymbols (abfd) = location;

  bfd_get_outsymbols (abfd) = location;

  bfd_get_symcount (abfd) = symcount;

  bfd_get_symcount (abfd) = symcount;

  return TRUE;

  return TRUE;

}

}

/*

/*

FUNCTION

FUNCTION

        bfd_print_symbol_vandf

        bfd_print_symbol_vandf

SYNOPSIS

SYNOPSIS

        void bfd_print_symbol_vandf (bfd *abfd, void *file, asymbol *symbol);

        void bfd_print_symbol_vandf (bfd *abfd, void *file, asymbol *symbol);

DESCRIPTION

DESCRIPTION

        Print the value and flags of the @var{symbol} supplied to the

        Print the value and flags of the @var{symbol} supplied to the

        stream @var{file}.

        stream @var{file}.

*/

*/

void

void

bfd_print_symbol_vandf (bfd *abfd, void *arg, asymbol *symbol)

bfd_print_symbol_vandf (bfd *abfd, void *arg, asymbol *symbol)

{

{

  FILE *file = arg;

  FILE *file = arg;

  flagword type = symbol->flags;

  flagword type = symbol->flags;

  if (symbol->section != NULL)

  if (symbol->section != NULL)

    bfd_fprintf_vma (abfd, file, symbol->value + symbol->section->vma);

    bfd_fprintf_vma (abfd, file, symbol->value + symbol->section->vma);

  else

  else

    bfd_fprintf_vma (abfd, file, symbol->value);

    bfd_fprintf_vma (abfd, file, symbol->value);

  /* This presumes that a symbol can not be both BSF_DEBUGGING and

  /* This presumes that a symbol can not be both BSF_DEBUGGING and

     BSF_DYNAMIC, nor more than one of BSF_FUNCTION, BSF_FILE, and

     BSF_DYNAMIC, nor more than one of BSF_FUNCTION, BSF_FILE, and

     BSF_OBJECT.  */

     BSF_OBJECT.  */

  fprintf (file, " %c%c%c%c%c%c%c",

  fprintf (file, " %c%c%c%c%c%c%c",

           ((type & BSF_LOCAL)

           ((type & BSF_LOCAL)

            ? (type & BSF_GLOBAL) ? '!' : 'l'

            ? (type & BSF_GLOBAL) ? '!' : 'l'

            : (type & BSF_GLOBAL) ? 'g' : ' '),

            : (type & BSF_GLOBAL) ? 'g' : ' '),

           (type & BSF_WEAK) ? 'w' : ' ',

           (type & BSF_WEAK) ? 'w' : ' ',

           (type & BSF_CONSTRUCTOR) ? 'C' : ' ',

           (type & BSF_CONSTRUCTOR) ? 'C' : ' ',

           (type & BSF_WARNING) ? 'W' : ' ',

           (type & BSF_WARNING) ? 'W' : ' ',

           (type & BSF_INDIRECT) ? 'I' : ' ',

           (type & BSF_INDIRECT) ? 'I' : ' ',

           (type & BSF_DEBUGGING) ? 'd' : (type & BSF_DYNAMIC) ? 'D' : ' ',

           (type & BSF_DEBUGGING) ? 'd' : (type & BSF_DYNAMIC) ? 'D' : ' ',

           ((type & BSF_FUNCTION)

           ((type & BSF_FUNCTION)

            ? 'F'

            ? 'F'

            : ((type & BSF_FILE)

            : ((type & BSF_FILE)

               ? 'f'

               ? 'f'

               : ((type & BSF_OBJECT) ? 'O' : ' '))));

               : ((type & BSF_OBJECT) ? 'O' : ' '))));

}

}

/*

/*

FUNCTION

FUNCTION

        bfd_make_empty_symbol

        bfd_make_empty_symbol

DESCRIPTION

DESCRIPTION

        Create a new <<asymbol>> structure for the BFD @var{abfd}

        Create a new <<asymbol>> structure for the BFD @var{abfd}

        and return a pointer to it.

        and return a pointer to it.

        This routine is necessary because each back end has private

        This routine is necessary because each back end has private

        information surrounding the <<asymbol>>. Building your own

        information surrounding the <<asymbol>>. Building your own

        <<asymbol>> and pointing to it will not create the private

        <<asymbol>> and pointing to it will not create the private

        information, and will cause problems later on.

        information, and will cause problems later on.

.#define bfd_make_empty_symbol(abfd) \

.#define bfd_make_empty_symbol(abfd) \

.  BFD_SEND (abfd, _bfd_make_empty_symbol, (abfd))

.  BFD_SEND (abfd, _bfd_make_empty_symbol, (abfd))

.

.

*/

*/

/*

/*

FUNCTION

FUNCTION

        _bfd_generic_make_empty_symbol

        _bfd_generic_make_empty_symbol

SYNOPSIS

SYNOPSIS

        asymbol *_bfd_generic_make_empty_symbol (bfd *);

        asymbol *_bfd_generic_make_empty_symbol (bfd *);

DESCRIPTION

DESCRIPTION

        Create a new <<asymbol>> structure for the BFD @var{abfd}

        Create a new <<asymbol>> structure for the BFD @var{abfd}

        and return a pointer to it.  Used by core file routines,

        and return a pointer to it.  Used by core file routines,

        binary back-end and anywhere else where no private info

        binary back-end and anywhere else where no private info

        is needed.

        is needed.

*/

*/

asymbol *

asymbol *

_bfd_generic_make_empty_symbol (bfd *abfd)

_bfd_generic_make_empty_symbol (bfd *abfd)

{

{

  bfd_size_type amt = sizeof (asymbol);

  bfd_size_type amt = sizeof (asymbol);

  asymbol *new = bfd_zalloc (abfd, amt);

  asymbol *new = bfd_zalloc (abfd, amt);

  if (new)

  if (new)

    new->the_bfd = abfd;

    new->the_bfd = abfd;

  return new;

  return new;

}

}

/*

/*

FUNCTION

FUNCTION

        bfd_make_debug_symbol

        bfd_make_debug_symbol

DESCRIPTION

DESCRIPTION

        Create a new <<asymbol>> structure for the BFD @var{abfd},

        Create a new <<asymbol>> structure for the BFD @var{abfd},

        to be used as a debugging symbol.  Further details of its use have

        to be used as a debugging symbol.  Further details of its use have

        yet to be worked out.

        yet to be worked out.

.#define bfd_make_debug_symbol(abfd,ptr,size) \

.#define bfd_make_debug_symbol(abfd,ptr,size) \

.  BFD_SEND (abfd, _bfd_make_debug_symbol, (abfd, ptr, size))

.  BFD_SEND (abfd, _bfd_make_debug_symbol, (abfd, ptr, size))

.

.

*/

*/

struct section_to_type

struct section_to_type

{

{

  const char *section;

  const char *section;

  char type;

  char type;

};

};

/* Map section names to POSIX/BSD single-character symbol types.

/* Map section names to POSIX/BSD single-character symbol types.

   This table is probably incomplete.  It is sorted for convenience of

   This table is probably incomplete.  It is sorted for convenience of

   adding entries.  Since it is so short, a linear search is used.  */

   adding entries.  Since it is so short, a linear search is used.  */

static const struct section_to_type stt[] =

static const struct section_to_type stt[] =

{

{

  {".bss", 'b'},

  {".bss", 'b'},

  {"code", 't'},                /* MRI .text */

  {"code", 't'},                /* MRI .text */

  {".data", 'd'},

  {".data", 'd'},

  {"*DEBUG*", 'N'},

  {"*DEBUG*", 'N'},

  {".debug", 'N'},              /* MSVC's .debug (non-standard debug syms) */

  {".debug", 'N'},              /* MSVC's .debug (non-standard debug syms) */

  {".drectve", 'i'},            /* MSVC's .drective section */

  {".drectve", 'i'},            /* MSVC's .drective section */

  {".edata", 'e'},              /* MSVC's .edata (export) section */

  {".edata", 'e'},              /* MSVC's .edata (export) section */

  {".fini", 't'},               /* ELF fini section */

  {".fini", 't'},               /* ELF fini section */

  {".idata", 'i'},              /* MSVC's .idata (import) section */

  {".idata", 'i'},              /* MSVC's .idata (import) section */

  {".init", 't'},               /* ELF init section */

  {".init", 't'},               /* ELF init section */

  {".pdata", 'p'},              /* MSVC's .pdata (stack unwind) section */

  {".pdata", 'p'},              /* MSVC's .pdata (stack unwind) section */

  {".rdata", 'r'},              /* Read only data.  */

  {".rdata", 'r'},              /* Read only data.  */

  {".rodata", 'r'},             /* Read only data.  */

  {".rodata", 'r'},             /* Read only data.  */

  {".sbss", 's'},               /* Small BSS (uninitialized data).  */

  {".sbss", 's'},               /* Small BSS (uninitialized data).  */

  {".scommon", 'c'},            /* Small common.  */

  {".scommon", 'c'},            /* Small common.  */

  {".sdata", 'g'},              /* Small initialized data.  */

  {".sdata", 'g'},              /* Small initialized data.  */

  {".text", 't'},

  {".text", 't'},

  {"vars", 'd'},                /* MRI .data */

  {"vars", 'd'},                /* MRI .data */

  {"zerovars", 'b'},            /* MRI .bss */

  {"zerovars", 'b'},            /* MRI .bss */

  {0, 0}

  {0, 0}

};

};

/* Return the single-character symbol type corresponding to

/* Return the single-character symbol type corresponding to

   section S, or '?' for an unknown COFF section.

   section S, or '?' for an unknown COFF section.

   Check for any leading string which matches, so .text5 returns

   Check for any leading string which matches, so .text5 returns

   't' as well as .text */

   't' as well as .text */

static char

static char

coff_section_type (const char *s)

coff_section_type (const char *s)

{

{

  const struct section_to_type *t;

  const struct section_to_type *t;

  for (t = &stt[0]; t->section; t++)

  for (t = &stt[0]; t->section; t++)

    if (!strncmp (s, t->section, strlen (t->section)))

    if (!strncmp (s, t->section, strlen (t->section)))

      return t->type;

      return t->type;

  return '?';

  return '?';

}

}

/* Return the single-character symbol type corresponding to section

/* Return the single-character symbol type corresponding to section

   SECTION, or '?' for an unknown section.  This uses section flags to

   SECTION, or '?' for an unknown section.  This uses section flags to

   identify sections.

   identify sections.

   FIXME These types are unhandled: c, i, e, p.  If we handled these also,

   FIXME These types are unhandled: c, i, e, p.  If we handled these also,

   we could perhaps obsolete coff_section_type.  */

   we could perhaps obsolete coff_section_type.  */

static char

static char

decode_section_type (const struct bfd_section *section)

decode_section_type (const struct bfd_section *section)

{

{

  if (section->flags & SEC_CODE)

  if (section->flags & SEC_CODE)

    return 't';

    return 't';

  if (section->flags & SEC_DATA)

  if (section->flags & SEC_DATA)

    {

    {

      if (section->flags & SEC_READONLY)

      if (section->flags & SEC_READONLY)

        return 'r';

        return 'r';

      else if (section->flags & SEC_SMALL_DATA)

      else if (section->flags & SEC_SMALL_DATA)

        return 'g';

        return 'g';

      else

      else

        return 'd';

        return 'd';

    }

    }

  if ((section->flags & SEC_HAS_CONTENTS) == 0)

  if ((section->flags & SEC_HAS_CONTENTS) == 0)

    {

    {

      if (section->flags & SEC_SMALL_DATA)

      if (section->flags & SEC_SMALL_DATA)

        return 's';

        return 's';

      else

      else

        return 'b';

        return 'b';

    }

    }

  if (section->flags & SEC_DEBUGGING)

  if (section->flags & SEC_DEBUGGING)

    return 'N';

    return 'N';

  if ((section->flags & SEC_HAS_CONTENTS) && (section->flags & SEC_READONLY))

  if ((section->flags & SEC_HAS_CONTENTS) && (section->flags & SEC_READONLY))

    return 'n';

    return 'n';

  return '?';

  return '?';

}

}

/*

/*

FUNCTION

FUNCTION

        bfd_decode_symclass

        bfd_decode_symclass

DESCRIPTION

DESCRIPTION

        Return a character corresponding to the symbol

        Return a character corresponding to the symbol

        class of @var{symbol}, or '?' for an unknown class.

        class of @var{symbol}, or '?' for an unknown class.

SYNOPSIS

SYNOPSIS

        int bfd_decode_symclass (asymbol *symbol);

        int bfd_decode_symclass (asymbol *symbol);

*/

*/

int

int

bfd_decode_symclass (asymbol *symbol)

bfd_decode_symclass (asymbol *symbol)

{

{

  char c;

  char c;

  if (symbol->section && bfd_is_com_section (symbol->section))

  if (symbol->section && bfd_is_com_section (symbol->section))

    return 'C';

    return 'C';

  if (bfd_is_und_section (symbol->section))

  if (bfd_is_und_section (symbol->section))

    {

    {

      if (symbol->flags & BSF_WEAK)

      if (symbol->flags & BSF_WEAK)

        {

        {

          /* If weak, determine if it's specifically an object

          /* If weak, determine if it's specifically an object

             or non-object weak.  */

             or non-object weak.  */

          if (symbol->flags & BSF_OBJECT)

          if (symbol->flags & BSF_OBJECT)

            return 'v';

            return 'v';

          else

          else

            return 'w';

            return 'w';

        }

        }

      else

      else

        return 'U';

        return 'U';

    }

    }

  if (bfd_is_ind_section (symbol->section))

  if (bfd_is_ind_section (symbol->section))

    return 'I';

    return 'I';

  if (symbol->flags & BSF_WEAK)

  if (symbol->flags & BSF_WEAK)

    {

    {

      /* If weak, determine if it's specifically an object

      /* If weak, determine if it's specifically an object

         or non-object weak.  */

         or non-object weak.  */

      if (symbol->flags & BSF_OBJECT)

      if (symbol->flags & BSF_OBJECT)

        return 'V';

        return 'V';

      else

      else

        return 'W';

        return 'W';

    }

    }

  if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))

  if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))

    return '?';

    return '?';

  if (bfd_is_abs_section (symbol->section))

  if (bfd_is_abs_section (symbol->section))

    c = 'a';

    c = 'a';

  else if (symbol->section)

  else if (symbol->section)

    {

    {

      c = coff_section_type (symbol->section->name);

      c = coff_section_type (symbol->section->name);

      if (c == '?')

      if (c == '?')

        c = decode_section_type (symbol->section);

        c = decode_section_type (symbol->section);

    }

    }

  else

  else

    return '?';

    return '?';

  if (symbol->flags & BSF_GLOBAL)

  if (symbol->flags & BSF_GLOBAL)

    c = TOUPPER (c);

    c = TOUPPER (c);

  return c;

  return c;

  /* We don't have to handle these cases just yet, but we will soon:

  /* We don't have to handle these cases just yet, but we will soon:

     N_SETV: 'v';

     N_SETV: 'v';

     N_SETA: 'l';

     N_SETA: 'l';

     N_SETT: 'x';

     N_SETT: 'x';

     N_SETD: 'z';

     N_SETD: 'z';

     N_SETB: 's';

     N_SETB: 's';

     N_INDR: 'i';

     N_INDR: 'i';

     */

     */

}

}

/*

/*

FUNCTION

FUNCTION

        bfd_is_undefined_symclass

        bfd_is_undefined_symclass

DESCRIPTION

DESCRIPTION

        Returns non-zero if the class symbol returned by

        Returns non-zero if the class symbol returned by

        bfd_decode_symclass represents an undefined symbol.

        bfd_decode_symclass represents an undefined symbol.

        Returns zero otherwise.

        Returns zero otherwise.

SYNOPSIS

SYNOPSIS

        bfd_boolean bfd_is_undefined_symclass (int symclass);

        bfd_boolean bfd_is_undefined_symclass (int symclass);

*/

*/

bfd_boolean

bfd_boolean

bfd_is_undefined_symclass (int symclass)

bfd_is_undefined_symclass (int symclass)

{

{

  return symclass == 'U' || symclass == 'w' || symclass == 'v';

  return symclass == 'U' || symclass == 'w' || symclass == 'v';

}

}

/*

/*

FUNCTION

FUNCTION

        bfd_symbol_info

        bfd_symbol_info

DESCRIPTION

DESCRIPTION

        Fill in the basic info about symbol that nm needs.

        Fill in the basic info about symbol that nm needs.

        Additional info may be added by the back-ends after

        Additional info may be added by the back-ends after

        calling this function.

        calling this function.