/* BFD COFF object file private structure. Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 1998 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_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 int 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; /* 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; /* 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; } 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 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_size_type maxdata; /* maxstack from optional header. */ bfd_size_type 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 PEI image files. */ struct pei_section_tdata { /* The virtual size of the section. */ bfd_size_type virt_size; }; /* 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; }; 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 .. */