345 lines
12 KiB
C
345 lines
12 KiB
C
/* BFD COFF object file private structure.
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Copyright (C) 1990, 91, 92, 93, 94, 1995 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfdlink.h"
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/* Object file tdata; access macros */
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#define coff_data(bfd) ((bfd)->tdata.coff_obj_data)
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#define exec_hdr(bfd) (coff_data(bfd)->hdr)
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#define obj_pe(bfd) (coff_data(bfd)->pe)
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#define obj_symbols(bfd) (coff_data(bfd)->symbols)
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#define obj_sym_filepos(bfd) (coff_data(bfd)->sym_filepos)
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#define obj_relocbase(bfd) (coff_data(bfd)->relocbase)
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#define obj_raw_syments(bfd) (coff_data(bfd)->raw_syments)
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#define obj_raw_syment_count(bfd) (coff_data(bfd)->raw_syment_count)
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#define obj_convert(bfd) (coff_data(bfd)->conversion_table)
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#define obj_conv_table_size(bfd) (coff_data(bfd)->conv_table_size)
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#define obj_coff_external_syms(bfd) (coff_data (bfd)->external_syms)
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#define obj_coff_keep_syms(bfd) (coff_data (bfd)->keep_syms)
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#define obj_coff_strings(bfd) (coff_data (bfd)->strings)
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#define obj_coff_keep_strings(bfd) (coff_data (bfd)->keep_strings)
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#define obj_coff_sym_hashes(bfd) (coff_data (bfd)->sym_hashes)
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#define obj_coff_local_toc_table(bfd) (coff_data(bfd)->local_toc_sym_map)
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/* `Tdata' information kept for COFF files. */
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typedef struct coff_tdata
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{
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struct coff_symbol_struct *symbols; /* symtab for input bfd */
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unsigned int *conversion_table;
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int conv_table_size;
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file_ptr sym_filepos;
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struct coff_ptr_struct *raw_syments;
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unsigned int raw_syment_count;
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/* These are only valid once writing has begun */
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long int relocbase;
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/* These members communicate important constants about the symbol table
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to GDB's symbol-reading code. These `constants' unfortunately vary
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from coff implementation to implementation... */
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unsigned local_n_btmask;
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unsigned local_n_btshft;
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unsigned local_n_tmask;
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unsigned local_n_tshift;
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unsigned local_symesz;
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unsigned local_auxesz;
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unsigned local_linesz;
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/* The unswapped external symbols. May be NULL. Read by
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_bfd_coff_get_external_symbols. */
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PTR external_syms;
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/* If this is true, the external_syms may not be freed. */
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boolean keep_syms;
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/* The string table. May be NULL. Read by
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_bfd_coff_read_string_table. */
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char *strings;
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/* If this is true, the strings may not be freed. */
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boolean keep_strings;
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/* is this a PE format coff file */
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int pe;
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/* Used by the COFF backend linker. */
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struct coff_link_hash_entry **sym_hashes;
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/* used by the pe linker for PowerPC */
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int *local_toc_sym_map;
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struct bfd_link_info *link_info;
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} coff_data_type;
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/* Tdata for pe image files. */
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typedef struct pe_tdata
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{
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coff_data_type coff;
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struct internal_extra_pe_aouthdr pe_opthdr;
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int dll;
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int has_reloc_section;
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boolean (*in_reloc_p) PARAMS((bfd *, reloc_howto_type *));
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flagword real_flags;
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} pe_data_type;
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#define pe_data(bfd) ((bfd)->tdata.pe_obj_data)
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/* Tdata for XCOFF files. */
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struct xcoff_tdata
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{
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/* Basic COFF information. */
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coff_data_type coff;
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/* True if a large a.out header should be generated. */
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boolean full_aouthdr;
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/* TOC value. */
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bfd_vma toc;
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/* Section holding TOC. */
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asection *toc_section;
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/* Section holding entry point. */
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asection *entry_section;
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/* .text alignment from optional header. */
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int text_align_power;
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/* .data alignment from optional header. */
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int data_align_power;
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/* modtype from optional header. */
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short modtype;
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/* cputype from optional header. */
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short cputype;
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/* maxdata from optional header. */
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bfd_size_type maxdata;
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/* maxstack from optional header. */
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bfd_size_type maxstack;
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/* Used by the XCOFF backend linker. */
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asection **csects;
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unsigned long *debug_indices;
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unsigned int import_file_id;
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};
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#define xcoff_data(abfd) ((abfd)->tdata.xcoff_obj_data)
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/* We take the address of the first element of a asymbol to ensure that the
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* macro is only ever applied to an asymbol. */
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#define coffsymbol(asymbol) ((coff_symbol_type *)(&((asymbol)->the_bfd)))
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/* The used_by_bfd field of a section may be set to a pointer to this
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structure. */
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struct coff_section_tdata
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{
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/* The relocs, swapped into COFF internal form. This may be NULL. */
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struct internal_reloc *relocs;
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/* If this is true, the relocs entry may not be freed. */
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boolean keep_relocs;
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/* The section contents. This may be NULL. */
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bfd_byte *contents;
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/* If this is true, the contents entry may not be freed. */
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boolean keep_contents;
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/* Information cached by coff_find_nearest_line. */
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bfd_vma offset;
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unsigned int i;
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const char *function;
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int line_base;
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/* Available for individual backends. */
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PTR tdata;
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};
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/* An accessor macro for the coff_section_tdata structure. */
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#define coff_section_data(abfd, sec) \
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((struct coff_section_tdata *) (sec)->used_by_bfd)
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/* Tdata for sections in XCOFF files. This is used by the linker. */
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struct xcoff_section_tdata
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{
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/* Used for XCOFF csects created by the linker; points to the real
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XCOFF section which contains this csect. */
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asection *enclosing;
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/* The lineno_count field for the enclosing section, because we are
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going to clobber it there. */
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unsigned int lineno_count;
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/* The first and one past the last symbol indices for symbols used
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by this csect. */
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unsigned long first_symndx;
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unsigned long last_symndx;
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};
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/* An accessor macro the xcoff_section_tdata structure. */
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#define xcoff_section_data(abfd, sec) \
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((struct xcoff_section_tdata *) coff_section_data ((abfd), (sec))->tdata)
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/* COFF linker hash table entries. */
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struct coff_link_hash_entry
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{
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struct bfd_link_hash_entry root;
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/* Symbol index in output file. Set to -1 initially. Set to -2 if
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there is a reloc against this symbol. */
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long indx;
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/* Symbol type. */
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unsigned short type;
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/* Symbol class. */
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unsigned char class;
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/* Number of auxiliary entries. */
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char numaux;
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/* BFD to take auxiliary entries from. */
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bfd *auxbfd;
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/* Pointer to array of auxiliary entries, if any. */
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union internal_auxent *aux;
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/* If this symbol requires an entry in the table of contents, the
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processor specific backend uses this field to hold the offset
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into the .toc section. */
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bfd_vma toc_offset;
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};
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/* COFF linker hash table. */
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struct coff_link_hash_table
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{
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struct bfd_link_hash_table root;
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};
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/* Look up an entry in a COFF linker hash table. */
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#define coff_link_hash_lookup(table, string, create, copy, follow) \
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((struct coff_link_hash_entry *) \
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bfd_link_hash_lookup (&(table)->root, (string), (create), \
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(copy), (follow)))
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/* Traverse a COFF linker hash table. */
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#define coff_link_hash_traverse(table, func, info) \
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(bfd_link_hash_traverse \
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(&(table)->root, \
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(boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
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(info)))
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/* Get the COFF linker hash table from a link_info structure. */
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#define coff_hash_table(p) ((struct coff_link_hash_table *) ((p)->hash))
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/* Functions in coffgen.c. */
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extern const bfd_target *coff_object_p PARAMS ((bfd *));
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extern struct sec *coff_section_from_bfd_index PARAMS ((bfd *, int));
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extern long coff_get_symtab_upper_bound PARAMS ((bfd *));
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extern long coff_get_symtab PARAMS ((bfd *, asymbol **));
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extern int coff_count_linenumbers PARAMS ((bfd *));
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extern struct coff_symbol_struct *coff_symbol_from PARAMS ((bfd *, asymbol *));
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extern boolean coff_renumber_symbols PARAMS ((bfd *, int *));
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extern void coff_mangle_symbols PARAMS ((bfd *));
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extern boolean coff_write_symbols PARAMS ((bfd *));
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extern boolean coff_write_linenumbers PARAMS ((bfd *));
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extern alent *coff_get_lineno PARAMS ((bfd *, asymbol *));
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extern asymbol *coff_section_symbol PARAMS ((bfd *, char *));
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extern boolean _bfd_coff_get_external_symbols PARAMS ((bfd *));
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extern const char *_bfd_coff_read_string_table PARAMS ((bfd *));
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extern boolean _bfd_coff_free_symbols PARAMS ((bfd *));
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extern struct coff_ptr_struct *coff_get_normalized_symtab PARAMS ((bfd *));
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extern long coff_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
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extern asymbol *coff_make_empty_symbol PARAMS ((bfd *));
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extern void coff_print_symbol PARAMS ((bfd *, PTR filep, asymbol *,
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bfd_print_symbol_type how));
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extern void coff_get_symbol_info PARAMS ((bfd *, asymbol *,
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symbol_info *ret));
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extern asymbol *coff_bfd_make_debug_symbol PARAMS ((bfd *, PTR,
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unsigned long));
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extern boolean coff_find_nearest_line PARAMS ((bfd *,
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asection *,
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asymbol **,
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bfd_vma offset,
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CONST char **filename_ptr,
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CONST char **functionname_ptr,
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unsigned int *line_ptr));
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extern int coff_sizeof_headers PARAMS ((bfd *, boolean reloc));
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extern boolean bfd_coff_reloc16_relax_section
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PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
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extern bfd_byte *bfd_coff_reloc16_get_relocated_section_contents
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PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
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bfd_byte *, boolean relocateable, asymbol **));
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extern bfd_vma bfd_coff_reloc16_get_value PARAMS ((arelent *,
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struct bfd_link_info *,
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asection *));
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extern void bfd_perform_slip PARAMS ((bfd *abfd, unsigned int slip,
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asection *input_section,
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bfd_vma val));
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/* Functions in cofflink.c. */
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extern struct bfd_hash_entry *_bfd_coff_link_hash_newfunc
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PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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extern boolean _bfd_coff_link_hash_table_init
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PARAMS ((struct coff_link_hash_table *, bfd *,
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struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
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struct bfd_hash_table *,
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const char *)));
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extern struct bfd_link_hash_table *_bfd_coff_link_hash_table_create
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PARAMS ((bfd *));
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extern const char *_bfd_coff_internal_syment_name
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PARAMS ((bfd *, const struct internal_syment *, char *));
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extern boolean _bfd_coff_link_add_symbols
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PARAMS ((bfd *, struct bfd_link_info *));
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extern boolean _bfd_coff_final_link
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PARAMS ((bfd *, struct bfd_link_info *));
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extern struct internal_reloc *_bfd_coff_read_internal_relocs
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PARAMS ((bfd *, asection *, boolean, bfd_byte *, boolean,
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struct internal_reloc *));
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extern boolean _bfd_coff_generic_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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struct internal_reloc *, struct internal_syment *, asection **));
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#define coff_get_section_contents_in_window \
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_bfd_generic_get_section_contents_in_window
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/* Functions in xcofflink.c. */
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extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
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PARAMS ((bfd *));
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extern boolean _bfd_xcoff_bfd_link_add_symbols
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PARAMS ((bfd *, struct bfd_link_info *));
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extern boolean _bfd_xcoff_bfd_final_link
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PARAMS ((bfd *, struct bfd_link_info *));
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extern boolean _bfd_ppc_xcoff_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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struct internal_reloc *, struct internal_syment *, asection **));
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/* And more taken from the source .. */
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