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/* BFD COFF object file private structure.

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

   2000, 2001

   Free Software Foundation, Inc.

   Written by Cygnus Support.

** NOTE: libcoff.h is a GENERATED file.  Don't change it; instead,

** change libcoff-in.h or coffcode.h.

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

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

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

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

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

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

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

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

Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfdlink.h"

/* Object file tdata; access macros */

#define coff_data(bfd)          ((bfd)->tdata.coff_obj_data)

#define exec_hdr(bfd)           (coff_data(bfd)->hdr)

#define obj_pe(bfd)             (coff_data(bfd)->pe)

#define obj_symbols(bfd)        (coff_data(bfd)->symbols)

#define obj_sym_filepos(bfd)    (coff_data(bfd)->sym_filepos)

#define obj_relocbase(bfd)      (coff_data(bfd)->relocbase)

#define obj_raw_syments(bfd)    (coff_data(bfd)->raw_syments)

#define obj_raw_syment_count(bfd)       (coff_data(bfd)->raw_syment_count)

#define obj_convert(bfd)        (coff_data(bfd)->conversion_table)

#define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)

#define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)

#define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)

#define obj_coff_strings(bfd)   (coff_data (bfd)->strings)

#define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)

#define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)

#define obj_coff_strings_written(bfd) (coff_data (bfd)->strings_written)

#define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)

/* `Tdata' information kept for COFF files.  */

typedef struct coff_tdata

{

  struct   coff_symbol_struct *symbols; /* symtab for input bfd */

  unsigned int *conversion_table;

  int conv_table_size;

  file_ptr sym_filepos;

  struct coff_ptr_struct *raw_syments;

  unsigned long raw_syment_count;

  /* These are only valid once writing has begun */

  long int relocbase;

  /* These members communicate important constants about the symbol table

     to GDB's symbol-reading code.  These `constants' unfortunately vary

     from coff implementation to implementation...  */

  unsigned local_n_btmask;

  unsigned local_n_btshft;

  unsigned local_n_tmask;

  unsigned local_n_tshift;

  unsigned local_symesz;

  unsigned local_auxesz;

  unsigned local_linesz;

  /* The unswapped external symbols.  May be NULL.  Read by

     _bfd_coff_get_external_symbols.  */

  PTR external_syms;

  /* If this is true, the external_syms may not be freed.  */

  boolean keep_syms;

  /* The string table.  May be NULL.  Read by

     _bfd_coff_read_string_table.  */

  char *strings;

  /* If this is true, the strings may not be freed.  */

  boolean keep_strings;

  /* If this is true, the strings have been written out already.  */

  boolean strings_written;

  /* is this a PE format coff file */

  int pe;

  /* Used by the COFF backend linker.  */

  struct coff_link_hash_entry **sym_hashes;

  /* used by the pe linker for PowerPC */

  int *local_toc_sym_map;

  struct bfd_link_info *link_info;

  /* Used by coff_find_nearest_line.  */

  PTR line_info;

  /* A place to stash dwarf2 info for this bfd. */

  PTR dwarf2_find_line_info;

  /* The timestamp from the COFF file header.  */

  long timestamp;

  /* Copy of some of the f_flags bits in the COFF filehdr structure,

     used by ARM code.  */

  flagword flags;

} coff_data_type;

/* Tdata for pe image files. */

typedef struct pe_tdata

{

  coff_data_type coff;

  struct internal_extra_pe_aouthdr pe_opthdr;

  int dll;

  int has_reloc_section;

  boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));

  flagword real_flags;

  int target_subsystem;

  boolean force_minimum_alignment;

} pe_data_type;

#define pe_data(bfd)            ((bfd)->tdata.pe_obj_data)

/* Tdata for XCOFF files.  */

struct xcoff_tdata

{

  /* Basic COFF information.  */

  coff_data_type coff;

  /* True if this is an XCOFF64 file. */

  boolean xcoff64;

  /* True if a large a.out header should be generated.  */

  boolean full_aouthdr;

  /* TOC value.  */

  bfd_vma toc;

  /* Index of section holding TOC.  */

  int sntoc;

  /* Index of section holding entry point.  */

  int snentry;

  /* .text alignment from optional header.  */

  int text_align_power;

  /* .data alignment from optional header.  */

  int data_align_power;

  /* modtype from optional header.  */

  short modtype;

  /* cputype from optional header.  */

  short cputype;

  /* maxdata from optional header.  */

  bfd_vma maxdata;

  /* maxstack from optional header.  */

  bfd_vma maxstack;

  /* Used by the XCOFF backend linker.  */

  asection **csects;

  unsigned long *debug_indices;

  unsigned int import_file_id;

};

#define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)

/* We take the address of the first element of a asymbol to ensure that the

 * macro is only ever applied to an asymbol.  */

#define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))

/* The used_by_bfd field of a section may be set to a pointer to this

   structure.  */

struct coff_section_tdata

{

  /* The relocs, swapped into COFF internal form.  This may be NULL.  */

  struct internal_reloc *relocs;

  /* If this is true, the relocs entry may not be freed.  */

  boolean keep_relocs;

  /* The section contents.  This may be NULL.  */

  bfd_byte *contents;

  /* If this is true, the contents entry may not be freed.  */

  boolean keep_contents;

  /* Information cached by coff_find_nearest_line.  */

  bfd_vma offset;

  unsigned int i;

  const char *function;

  int line_base;

  /* A pointer used for .stab linking optimizations.  */

  PTR stab_info;

  /* Available for individual backends.  */

  PTR tdata;

};

/* An accessor macro for the coff_section_tdata structure.  */

#define coff_section_data(abfd, sec) \

  ((struct coff_section_tdata *) (sec)->used_by_bfd)

/* Tdata for sections in XCOFF files.  This is used by the linker.  */

struct xcoff_section_tdata

{

  /* Used for XCOFF csects created by the linker; points to the real

     XCOFF section which contains this csect.  */

  asection *enclosing;

  /* The lineno_count field for the enclosing section, because we are

     going to clobber it there.  */

  unsigned int lineno_count;

  /* The first and one past the last symbol indices for symbols used

     by this csect.  */

  unsigned long first_symndx;

  unsigned long last_symndx;

};

/* An accessor macro the xcoff_section_tdata structure.  */

#define xcoff_section_data(abfd, sec) \

  ((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)

/* Tdata for sections in PE files.  */

struct pei_section_tdata

{

  /* The virtual size of the section.  */

  bfd_size_type virt_size;

  /* The PE section flags.  */

  long pe_flags;

};

/* An accessor macro for the pei_section_tdata structure.  */

#define pei_section_data(abfd, sec) \

  ((struct pei_section_tdata *) coff_section_data ((abfd), (sec))->tdata)

/* COFF linker hash table entries.  */

struct coff_link_hash_entry

{

  struct bfd_link_hash_entry root;

  /* Symbol index in output file.  Set to -1 initially.  Set to -2 if

     there is a reloc against this symbol.  */

  long indx;

  /* Symbol type.  */

  unsigned short type;

  /* Symbol class.  */

  unsigned char class;

  /* Number of auxiliary entries.  */

  char numaux;

  /* BFD to take auxiliary entries from.  */

  bfd *auxbfd;

  /* Pointer to array of auxiliary entries, if any.  */

  union internal_auxent *aux;

  /* Flag word; legal values follow.  */

  unsigned short coff_link_hash_flags;

  /* Symbol is a PE section symbol.  */

#define COFF_LINK_HASH_PE_SECTION_SYMBOL (01)

};

/* COFF linker hash table.  */

struct coff_link_hash_table

{

  struct bfd_link_hash_table root;

  /* A pointer to information used to link stabs in sections.  */

  PTR stab_info;

};

/* Look up an entry in a COFF linker hash table.  */

#define coff_link_hash_lookup(table, string, create, copy, follow)      \

  ((struct coff_link_hash_entry *)                                      \

   bfd_link_hash_lookup (&(table)->root, (string), (create),            \

                         (copy), (follow)))

/* Traverse a COFF linker hash table.  */

#define coff_link_hash_traverse(table, func, info)                      \

  (bfd_link_hash_traverse                                               \

   (&(table)->root,                                                     \

    (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \

    (info)))

/* Get the COFF linker hash table from a link_info structure.  */

#define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))

/* Functions in coffgen.c.  */

extern const bfd_target *coff_object_p PARAMS ((bfd *));

extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));

extern long coff_get_symtab_upper_bound PARAMS ((bfd *));

extern long coff_get_symtab PARAMS ((bfd *, asymbol **));

extern int coff_count_linenumbers PARAMS ((bfd *));

extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));

extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));

extern void coff_mangle_symbols PARAMS ((bfd *));

extern boolean coff_write_symbols PARAMS ((bfd *));

extern boolean coff_write_linenumbers PARAMS ((bfd *));

extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));

extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));

extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));

extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));

extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));

extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));

extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));

extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));

extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,

                                       bfd_print_symbol_type how));

extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,

                                          symbol_info *ret));

extern boolean _bfd_coff_is_local_label_name PARAMS ((bfd *, const char *));

extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,

                                                    unsigned long));

extern boolean coff_find_nearest_line PARAMS ((bfd *,

                                               asection *,

                                               asymbol **,

                                               bfd_vma offset,

                                               CONST char **filename_ptr,

                                               CONST char **functionname_ptr,

                                               unsigned int *line_ptr));

extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));

extern boolean bfd_coff_reloc16_relax_section

  PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));

extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents

  PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,

           bfd_byte *, boolean relocateable, asymbol **));

extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,

                                                   struct bfd_link_info *,

                                                   asection *));

extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,

                                      asection *input_section,

                                      bfd_vma val));

/* Functions and types in cofflink.c.  */

#define STRING_SIZE_SIZE (4)

/* We use a hash table to merge identical enum, struct, and union

   definitions in the linker.  */

/* Information we keep for a single element (an enum value, a

   structure or union field) in the debug merge hash table.  */

struct coff_debug_merge_element

{

  /* Next element.  */

  struct coff_debug_merge_element *next;

  /* Name.  */

  const char *name;

  /* Type.  */

  unsigned int type;

  /* Symbol index for complex type.  */

  long tagndx;

};

/* A linked list of debug merge entries for a given name.  */

struct coff_debug_merge_type

{

  /* Next type with the same name.  */

  struct coff_debug_merge_type *next;

  /* Class of type.  */

  int class;

  /* Symbol index where this type is defined.  */

  long indx;

  /* List of elements.  */

  struct coff_debug_merge_element *elements;

};

/* Information we store in the debug merge hash table.  */

struct coff_debug_merge_hash_entry

{

  struct bfd_hash_entry root;

  /* A list of types with this name.  */

  struct coff_debug_merge_type *types;

};

/* The debug merge hash table.  */

struct coff_debug_merge_hash_table

{

  struct bfd_hash_table root;

};

/* Initialize a COFF debug merge hash table.  */

#define coff_debug_merge_hash_table_init(table) \

  (bfd_hash_table_init (&(table)->root, _bfd_coff_debug_merge_hash_newfunc))

/* Free a COFF debug merge hash table.  */

#define coff_debug_merge_hash_table_free(table) \

  (bfd_hash_table_free (&(table)->root))

/* Look up an entry in a COFF debug merge hash table.  */

#define coff_debug_merge_hash_lookup(table, string, create, copy) \

  ((struct coff_debug_merge_hash_entry *) \

   bfd_hash_lookup (&(table)->root, (string), (create), (copy)))

/* Information we keep for each section in the output file when doing

   a relocateable link.  */

struct coff_link_section_info

{

  /* The relocs to be output.  */

  struct internal_reloc *relocs;

  /* For each reloc against a global symbol whose index was not known

     when the reloc was handled, the global hash table entry.  */

  struct coff_link_hash_entry **rel_hashes;

};

/* Information that we pass around while doing the final link step.  */

struct coff_final_link_info

{

  /* General link information.  */

  struct bfd_link_info *info;

  /* Output BFD.  */

  bfd *output_bfd;

  /* Used to indicate failure in traversal routine.  */

  boolean failed;

  /* If doing "task linking" set only during the time when we want the

     global symbol writer to convert the storage class of defined global

     symbols from global to static. */

  boolean global_to_static;

  /* Hash table for long symbol names.  */

  struct bfd_strtab_hash *strtab;

  /* When doing a relocateable link, an array of information kept for

     each output section, indexed by the target_index field.  */

  struct coff_link_section_info *section_info;

  /* Symbol index of last C_FILE symbol (-1 if none).  */

  long last_file_index;

  /* Contents of last C_FILE symbol.  */

  struct internal_syment last_file;

  /* Symbol index of first aux entry of last .bf symbol with an empty

     endndx field (-1 if none).  */

  long last_bf_index;

  /* Contents of last_bf_index aux entry.  */

  union internal_auxent last_bf;

  /* Hash table used to merge debug information.  */

  struct coff_debug_merge_hash_table debug_merge;

  /* Buffer large enough to hold swapped symbols of any input file.  */

  struct internal_syment *internal_syms;

  /* Buffer large enough to hold sections of symbols of any input file.  */

  asection **sec_ptrs;

  /* Buffer large enough to hold output indices of symbols of any

     input file.  */

  long *sym_indices;

  /* Buffer large enough to hold output symbols for any input file.  */

  bfd_byte *outsyms;

  /* Buffer large enough to hold external line numbers for any input

     section.  */

  bfd_byte *linenos;

  /* Buffer large enough to hold any input section.  */

  bfd_byte *contents;

  /* Buffer large enough to hold external relocs of any input section.  */

  bfd_byte *external_relocs;

  /* Buffer large enough to hold swapped relocs of any input section.  */

  struct internal_reloc *internal_relocs;

};

/* Most COFF variants have no way to record the alignment of a

   section.  This struct is used to set a specific alignment based on

   the name of the section.  */

struct coff_section_alignment_entry

{

  /* The section name.  */

  const char *name;

  /* This is either (unsigned int) -1, indicating that the section

     name must match exactly, or it is the number of letters which

     must match at the start of the name.  */

  unsigned int comparison_length;

  /* These macros may be used to fill in the first two fields in a

     structure initialization.  */

#define COFF_SECTION_NAME_EXACT_MATCH(name) (name), ((unsigned int) -1)

#define COFF_SECTION_NAME_PARTIAL_MATCH(name) (name), (sizeof (name) - 1)

  /* Only use this entry if the default section alignment for this

     target is at least that much (as a power of two).  If this field

     is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */

  unsigned int default_alignment_min;

  /* Only use this entry if the default section alignment for this

     target is no greater than this (as a power of two).  If this

     field is COFF_ALIGNMENT_FIELD_EMPTY, it should be ignored.  */

  unsigned int default_alignment_max;

#define COFF_ALIGNMENT_FIELD_EMPTY ((unsigned int) -1)

  /* The desired alignment for this section (as a power of two).  */

  unsigned int alignment_power;

};

extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc

  PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));

extern boolean _bfd_coff_link_hash_table_init

  PARAMS ((struct coff_link_hash_table *, bfd *,

           struct bfd_hash_entry *(*) (struct bfd_hash_entry *,

                                       struct bfd_hash_table *,

                                       const char *)));

extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create

  PARAMS ((bfd *));

extern const char *_bfd_coff_internal_syment_name

  PARAMS ((bfd *, const struct internal_syment *, char *));

extern boolean _bfd_coff_link_add_symbols

  PARAMS ((bfd *, struct bfd_link_info *));

extern boolean _bfd_coff_final_link

  PARAMS ((bfd *, struct bfd_link_info *));

extern struct internal_reloc *_bfd_coff_read_internal_relocs

  PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,

           struct internal_reloc *));

extern boolean _bfd_coff_generic_relocate_section

  PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,

           struct internal_reloc *, struct internal_syment *, asection **));

extern struct bfd_hash_entry *_bfd_coff_debug_merge_hash_newfunc

  PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));

extern boolean _bfd_coff_write_global_sym

  PARAMS ((struct coff_link_hash_entry *, PTR));

extern boolean _bfd_coff_write_task_globals

  PARAMS ((struct coff_link_hash_entry *, PTR));

extern boolean _bfd_coff_link_input_bfd

  PARAMS ((struct coff_final_link_info *, bfd *));

extern boolean _bfd_coff_reloc_link_order

  PARAMS ((bfd *, struct coff_final_link_info *, asection *,

           struct bfd_link_order *));

#define coff_get_section_contents_in_window \

  _bfd_generic_get_section_contents_in_window

/* Functions in xcofflink.c.  */

extern long _bfd_xcoff_get_dynamic_symtab_upper_bound PARAMS ((bfd *));

extern long _bfd_xcoff_canonicalize_dynamic_symtab

  PARAMS ((bfd *, asymbol **));

extern long _bfd_xcoff_get_dynamic_reloc_upper_bound PARAMS ((bfd *));

extern long _bfd_xcoff_canonicalize_dynamic_reloc

  PARAMS ((bfd *, arelent **, asymbol **));

extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create

  PARAMS ((bfd *));

extern boolean _bfd_xcoff_bfd_link_add_symbols

  PARAMS ((bfd *, struct bfd_link_info *));

extern boolean _bfd_xcoff_bfd_final_link

  PARAMS ((bfd *, struct bfd_link_info *));

extern boolean _bfd_ppc_xcoff_relocate_section

  PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,

           struct internal_reloc *, struct internal_syment *, asection **));

/* Functions in coff-ppc.c.  FIXME: These are called be pe.em in the

   linker, and so should start with bfd and be declared in bfd.h.  */

extern boolean ppc_allocate_toc_section PARAMS ((struct bfd_link_info *));

extern boolean ppc_process_before_allocation

  PARAMS ((bfd *, struct bfd_link_info *));

/* And more taken from the source .. */