binutils-gdb/include/bfd.h

/* A -*- C -*- header file for the bfd library
   Copyright 1990, 1991 Free Software Foundation, Inc.
   Contributed by Cygnus Support.

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., 675 Mass Ave, Cambridge, MA 02139, USA.  */

/* bfd.h -- The only header file required by users of the bfd library 

This file is generated from various .c files, if you change it, your
bits may be lost.

All the prototypes and definitions following the comment "THE FOLLOWING
IS EXTRACTED FROM THE SOURCE" are extracted from the source files for
BFD.  If you change it, someone oneday will extract it from the source
again, and your changes will be lost.  To save yourself from this bind,
change the definitions in the source in the bfd directory.  Type "make
docs" and then "make headers" in that directory, and magically this file
will change to reflect your changes.

If you don't have the tools to perform the extraction, then you are
safe from someone on your system trampling over your header files.
You should still maintain the equivalence between the source and this
file though; every change you make to the .c file should be reflected
here.  */

#ifndef __BFD_H_SEEN__
#define __BFD_H_SEEN__

#include "ansidecl.h"
#include "obstack.h"

/* Make it easier to declare prototypes (puts conditional here) */
#ifndef PROTO
#	if __STDC__
#		define PROTO(type, name, arglist) type name arglist
#	else
#		define PROTO(type, name, arglist) type name ()
#	endif
#endif

#define BFD_VERSION "0.18"

/* forward declaration */
typedef struct _bfd bfd;

/* General rules: functions which are boolean return true on success
   and false on failure (unless they're a predicate).   -- bfd.doc */
/* I'm sure this is going to break something and someone is going to
   force me to change it. */
/* typedef enum boolean {false, true} boolean; */
/* Yup, SVR4 has a "typedef enum boolean" in <sys/types.h>  -fnf */
typedef enum bfd_boolean {false, true} boolean;

/* Try to avoid breaking stuff */
typedef  long int file_ptr;

/* Support for different sizes of target format ints and addresses */

#ifdef	HOST_64_BIT
typedef HOST_64_BIT rawdata_offset;
typedef HOST_64_BIT bfd_vma;
typedef HOST_64_BIT bfd_word;
typedef HOST_64_BIT bfd_offset;
typedef HOST_64_BIT bfd_size_type;
typedef HOST_64_BIT symvalue;
typedef HOST_64_BIT bfd_64_type;
#define fprintf_vma(s,x) \
		fprintf(s,"%08x%08x", uint64_typeHIGH(x), uint64_typeLOW(x))
#else
typedef struct {int a,b;} bfd_64_type;
typedef unsigned long rawdata_offset;
typedef unsigned long bfd_vma;
typedef unsigned long bfd_offset;
typedef unsigned long bfd_word;
typedef unsigned long bfd_size;
typedef unsigned long symvalue;
typedef unsigned long bfd_size_type;
#define fprintf_vma(s,x) fprintf(s, "%08lx", x)
#endif
#define printf_vma(x) fprintf_vma(stdout,x)

typedef unsigned int flagword;	/* 32 bits of flags */

/** File formats */

typedef enum bfd_format {
	      bfd_unknown = 0,	/* file format is unknown */
	      bfd_object,	/* linker/assember/compiler output */
	      bfd_archive,	/* object archive file */
	      bfd_core,		/* core dump */
	      bfd_type_end}	/* marks the end; don't use it! */
         bfd_format;

/* Object file flag values */
#define NO_FLAGS    0
#define HAS_RELOC   001
#define EXEC_P      002
#define HAS_LINENO  004
#define HAS_DEBUG   010
#define HAS_SYMS    020
#define HAS_LOCALS  040
#define DYNAMIC     0100
#define WP_TEXT     0200
#define D_PAGED     0400


/* symbols and relocation */

typedef unsigned long symindex;

#define BFD_NO_MORE_SYMBOLS ((symindex) ~0)

typedef enum bfd_symclass {
	      bfd_symclass_unknown = 0,
	      bfd_symclass_fcommon, /* fortran common symbols */
	      bfd_symclass_global, /* global symbol, what a surprise */
	      bfd_symclass_debugger, /* some debugger symbol */
	      bfd_symclass_undefined /* none known */
	    } symclass;


typedef int symtype;		/* Who knows, yet? */


/* general purpose part of a symbol;
   target specific parts will be found in libcoff.h, liba.out.h etc */


#define bfd_get_section(x) ((x)->section)
#define bfd_get_output_section(x) ((x)->section->output_section)
#define bfd_set_section(x,y) ((x)->section) = (y)
#define bfd_asymbol_base(x) ((x)->section?((x)->section->vma):0)
#define bfd_asymbol_value(x) (bfd_asymbol_base(x) + x->value)
#define bfd_asymbol_name(x) ((x)->name)

/* This is a type pun with struct ranlib on purpose! */
typedef struct carsym {
  char *name;
  file_ptr file_offset;		/* look here to find the file */
} carsym;			/* to make these you call a carsymogen */

  
/* Used in generating armaps.  Perhaps just a forward definition would do? */
struct orl {			/* output ranlib */
  char **name;			/* symbol name */ 
  file_ptr pos;			/* bfd* or file position */
  int namidx;			/* index into string table */
};



/* Linenumber stuff */
typedef struct lineno_cache_entry {
  unsigned int line_number;	/* Linenumber from start of function*/  
  union {
 struct symbol_cache_entry *sym;		/* Function name */
    unsigned long offset;	/* Offset into section */
  } u;
} alent;

/* object and core file sections */


#define	align_power(addr, align)	\
	( ((addr) + ((1<<(align))-1)) & (-1 << (align)))

typedef struct sec *sec_ptr;

#define bfd_section_name(bfd, ptr) ((ptr)->name)
#define bfd_section_size(bfd, ptr) ((ptr)->size)
#define bfd_section_vma(bfd, ptr) ((ptr)->vma)
#define bfd_section_alignment(bfd, ptr) ((ptr)->alignment_power)
#define bfd_get_section_flags(bfd, ptr) ((ptr)->flags)
#define bfd_get_section_userdata(bfd, ptr) ((ptr)->userdata)

#define bfd_set_section_vma(bfd, ptr, val) (((ptr)->vma = (val)), true)
#define bfd_set_section_alignment(bfd, ptr, val) (((ptr)->alignment_power = (val)),true)
#define bfd_set_section_userdata(bfd, ptr, val) (((ptr)->userdata = (val)),true)

typedef struct stat stat_type; 

/** Error handling */

typedef enum bfd_error {
	      no_error = 0, system_call_error, invalid_target,
	      wrong_format, invalid_operation, no_memory,
	      no_symbols, no_relocation_info,
	      no_more_archived_files, malformed_archive,
	      symbol_not_found, file_not_recognized,
	      file_ambiguously_recognized, no_contents,
	      bfd_error_nonrepresentable_section,
	      no_debug_section,
	      invalid_error_code} bfd_ec;

extern bfd_ec bfd_error;

typedef struct bfd_error_vector {
  PROTO(void,(* nonrepresentable_section ),(CONST bfd  *CONST abfd,
					    CONST char *CONST name));
} bfd_error_vector_type;

PROTO (char *, bfd_errmsg, ());
PROTO (void, bfd_perror, (CONST char *message));


typedef enum bfd_print_symbol
{ 
  bfd_print_symbol_name,
  bfd_print_symbol_more,
  bfd_print_symbol_all,
  bfd_print_symbol_nm /* Pretty format suitable for nm program. */
} bfd_print_symbol_type;
    


/* The code that implements targets can initialize a jump table with this
   macro.  It must name all its routines the same way (a prefix plus
   the standard routine suffix), or it must #define the routines that
   are not so named, before calling JUMP_TABLE in the initializer.  */

/* Semi-portable string concatenation in cpp */
#ifndef CAT
#ifdef __STDC__
#define CAT(a,b) a##b
#else
#define CAT(a,b) a/**/b
#endif
#endif

#define JUMP_TABLE(NAME)\
CAT(NAME,_core_file_failing_command),\
CAT(NAME,_core_file_failing_signal),\
CAT(NAME,_core_file_matches_executable_p),\
CAT(NAME,_slurp_armap),\
CAT(NAME,_slurp_extended_name_table),\
CAT(NAME,_truncate_arname),\
CAT(NAME,_write_armap),\
CAT(NAME,_close_and_cleanup),	\
CAT(NAME,_set_section_contents),\
CAT(NAME,_get_section_contents),\
CAT(NAME,_new_section_hook),\
CAT(NAME,_get_symtab_upper_bound),\
CAT(NAME,_get_symtab),\
CAT(NAME,_get_reloc_upper_bound),\
CAT(NAME,_canonicalize_reloc),\
CAT(NAME,_make_empty_symbol),\
CAT(NAME,_print_symbol),\
CAT(NAME,_get_lineno),\
CAT(NAME,_set_arch_mach),\
CAT(NAME,_openr_next_archived_file),\
CAT(NAME,_find_nearest_line),\
CAT(NAME,_generic_stat_arch_elt),\
CAT(NAME,_sizeof_headers),\
CAT(NAME,_bfd_debug_info_start),\
CAT(NAME,_bfd_debug_info_end),\
CAT(NAME,_bfd_debug_info_accumulate)

#define COFF_SWAP_TABLE \
 coff_swap_aux_in, coff_swap_sym_in, coff_swap_lineno_in, \
 coff_swap_aux_out, coff_swap_sym_out, \
 coff_swap_lineno_out, coff_swap_reloc_out, \
 coff_swap_filehdr_out, coff_swap_aouthdr_out, \
 coff_swap_scnhdr_out



/* User program access to BFD facilities */

extern CONST short _bfd_host_big_endian;
#define HOST_BYTE_ORDER_BIG_P	(*(char *)&_bfd_host_big_endian)

/* The bfd itself */

/* Cast from const char * to char * so that caller can assign to
   a char * without a warning.  */
#define bfd_get_filename(abfd) ((char *) (abfd)->filename)
#define bfd_get_format(abfd) ((abfd)->format)
#define bfd_get_target(abfd) ((abfd)->xvec->name)
#define bfd_get_file_flags(abfd) ((abfd)->flags)
#define bfd_applicable_file_flags(abfd) ((abfd)->xvec->object_flags)
#define bfd_applicable_section_flags(abfd) ((abfd)->xvec->section_flags)
#define bfd_my_archive(abfd) ((abfd)->my_archive)
#define bfd_has_map(abfd) ((abfd)->has_armap)
#define bfd_header_twiddle_required(abfd) \
        ((((abfd)->xvec->header_byteorder_big_p)		\
	  != (boolean)HOST_BYTE_ORDER_BIG_P) ? true:false)

#define bfd_valid_reloc_types(abfd) ((abfd)->xvec->valid_reloc_types)
#define bfd_usrdata(abfd) ((abfd)->usrdata)

#define bfd_get_start_address(abfd) ((abfd)->start_address)
#define bfd_get_symcount(abfd) ((abfd)->symcount)
#define bfd_get_outsymbols(abfd) ((abfd)->outsymbols)
#define bfd_count_sections(abfd) ((abfd)->section_count)
#define bfd_get_architecture(abfd) ((abfd)->obj_arch)
#define bfd_get_machine(abfd) ((abfd)->obj_machine)



#define BYTE_SIZE 1
#define SHORT_SIZE 2
#define LONG_SIZE 4



/* ANd more from the source */







void EXFUN(bfd_init, (void));
bfd *EXFUN(bfd_openr, (CONST char *filename, CONST char*target));
bfd *EXFUN(bfd_fdopenr, (CONST char *filename, CONST char *target, int fd));
bfd *EXFUN(bfd_openw, (CONST char *filename, CONST char *target));
boolean EXFUN(bfd_close, (bfd *));
boolean EXFUN(bfd_close_all_done, (bfd *));
bfd_size_type EXFUN(bfd_alloc_size, (bfd *abfd));
bfd *EXFUN(bfd_create, (CONST char *filename, bfd *template));
#define bfd_put_8(abfd, val, ptr) \
                (*((char *)ptr) = (char)val)
#define bfd_get_8(abfd, ptr) \
                (*((char *)ptr))
#define bfd_put_16(abfd, val, ptr) \
                BFD_SEND(abfd, bfd_putx16, (val,ptr))
#define bfd_get_16(abfd, ptr) \
                BFD_SEND(abfd, bfd_getx16, (ptr))
#define bfd_put_32(abfd, val, ptr) \
                BFD_SEND(abfd, bfd_putx32, (val,ptr))
#define bfd_get_32(abfd, ptr) \
                BFD_SEND(abfd, bfd_getx32, (ptr))
#define bfd_put_64(abfd, val, ptr) \
                BFD_SEND(abfd, bfd_putx64, (val, ptr))
#define bfd_get_64(abfd, ptr) \
                BFD_SEND(abfd, bfd_getx64, (ptr))
#define bfd_h_put_8(abfd, val, ptr) \
                (*((char *)ptr) = (char)val)
#define bfd_h_get_8(abfd, ptr) \
                (*((char *)ptr))
#define bfd_h_put_16(abfd, val, ptr) \
                BFD_SEND(abfd, bfd_h_putx16,(val,ptr))
#define bfd_h_get_16(abfd, ptr) \
                BFD_SEND(abfd, bfd_h_getx16,(ptr))
#define bfd_h_put_32(abfd, val, ptr) \
                BFD_SEND(abfd, bfd_h_putx32,(val,ptr))
#define bfd_h_get_32(abfd, ptr) \
                BFD_SEND(abfd, bfd_h_getx32,(ptr))
#define bfd_h_put_64(abfd, val, ptr) \
                BFD_SEND(abfd, bfd_h_putx64,(val, ptr))
#define bfd_h_get_64(abfd, ptr) \
                BFD_SEND(abfd, bfd_h_getx64,(ptr))
typedef struct sec 
{
         /* The name of the section, the name isn't a copy, the pointer is
        the same as that passed to bfd_make_section. */

    CONST char *name;

         /* The next section in the list belonging to the BFD, or NULL. */

    struct sec *next;

         /* The field flags contains attributes of the section. Some of
           flags are read in from the object file, and some are
           synthesized from other information.  */         

    flagword flags;

#define SEC_NO_FLAGS   0x000

         /* Tells the OS to allocate space for this section when loaded.
           This would clear for a section containing debug information
           only. */
          

#define SEC_ALLOC      0x001
         /* Tells the OS to load the section from the file when loading.
           This would be clear for a .bss section */

#define SEC_LOAD       0x002
         /* The section contains data still to be relocated, so there will
           be some relocation information too. */

#define SEC_RELOC      0x004

         /* Obsolete ? */

#define SEC_BALIGN     0x008

         /* A signal to the OS that the section contains read only
          data. */
#define SEC_READONLY   0x010

         /* The section contains code only. */

#define SEC_CODE       0x020

         /* The section contains data only. */

#define SEC_DATA        0x040

         /* The section will reside in ROM. */

#define SEC_ROM        0x080

         /* The section contains constructor information. This section
           type is used by the linker to create lists of constructors and
           destructors used by <<g++>>. When a back end sees a symbol
           which should be used in a constructor list, it creates a new
           section for the type of name (eg <<__CTOR_LIST__>>), attaches
           the symbol to it and builds a relocation. To build the lists
           of constructors, all the linker has to to is catenate all the
           sections called <<__CTOR_LIST__>> and relocte the data
           contained within - exactly the operations it would peform on
           standard data. */

#define SEC_CONSTRUCTOR 0x100

         /* The section is a constuctor, and should be placed at the
          end of the . */


#define SEC_CONSTRUCTOR_TEXT 0x1100

#define SEC_CONSTRUCTOR_DATA 0x2100

#define SEC_CONSTRUCTOR_BSS  0x3100


         /* The section has contents - a bss section could be
           <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>, a debug section could be
           <<SEC_HAS_CONTENTS>> */

#define SEC_HAS_CONTENTS 0x200

         /* An instruction to the linker not to output sections
          containing this flag even if they have information which
          would normally be written. */

#define SEC_NEVER_LOAD 0x400

         /* The base address of the section in the address space of the
          target. */
       
   bfd_vma vma;

         /* The size of the section in bytes of the loaded section. This
           contains a value even if the section has no contents (eg, the
           size of <<.bss>>). */

   bfd_size_type size;    

         /* If this section is going to be output, then this value is the
           offset into the output section of the first byte in the input
           section. Eg, if this was going to start at the 100th byte in
           the output section, this value would be 100. */

   bfd_vma output_offset;

         /* The output section through which to map on output. */

   struct sec *output_section;

         /* The alignment requirement of the section, as an exponent - eg
           3 aligns to 2^3 (or 8) */

   unsigned int alignment_power;

         /* If an input section, a pointer to a vector of relocation
           records for the data in this section. */

   struct reloc_cache_entry *relocation;

         /* If an output section, a pointer to a vector of pointers to
           relocation records for the data in this section. */

   struct reloc_cache_entry **orelocation;

         /* The number of relocation records in one of the above  */

   unsigned reloc_count;

         /* Which section is it 0.nth      */

   int index;                      

         /* Information below is back end specific - and not always used
           or updated 

           File position of section data    */

   file_ptr filepos;      
        
         /* File position of relocation info */

   file_ptr rel_filepos;

         /* File position of line data       */

   file_ptr line_filepos;

         /* Pointer to data for applications */

   PTR userdata;

   struct lang_output_section *otheruserdata;

         /* Attached line number information */

   alent *lineno;
        
         /* Number of line number records   */

   unsigned int lineno_count;

         /* When a section is being output, this value changes as more
           linenumbers are written out */

   file_ptr moving_line_filepos;

         /* what the section number is in the target world  */

   unsigned int target_index;

   PTR used_by_bfd;

         /* If this is a constructor section then here is a list of the
           relocations created to relocate items within it. */

   struct relent_chain *constructor_chain;

         /* The BFD which owns the section. */

   bfd *owner;

} asection ;
asection *EXFUN(bfd_get_section_by_name, (bfd *abfd, CONST char *name));
asection *EXFUN(bfd_make_section_old_way, (bfd *, CONST char *name));
asection * EXFUN(bfd_make_section, (bfd *, CONST char *name));
boolean EXFUN(bfd_set_section_flags, (bfd *, asection *, flagword));
void EXFUN(bfd_map_over_sections, (bfd *abfd, void (*func)(), PTR obj));
boolean EXFUN(bfd_set_section_size, (bfd *, asection *, bfd_size_type val));
boolean EXFUN(bfd_set_section_contents
    , (bfd *abfd,        
    asection *section,
    PTR data,
    file_ptr offset,
    bfd_size_type count));
boolean EXFUN(bfd_get_section_contents 
    , (bfd *abfd, asection *section, PTR location,
    file_ptr offset, bfd_size_type count));
enum bfd_architecture 
{
  bfd_arch_unknown,    /* File arch not known */
  bfd_arch_obscure,    /* Arch known, not one of these */
  bfd_arch_m68k,       /* Motorola 68xxx */
  bfd_arch_vax,        /* DEC Vax */   
  bfd_arch_i960,       /* Intel 960 */
     /* The order of the following is important.
       lower number indicates a machine type that 
       only accepts a subset of the instructions
       available to machines with higher numbers.
       The exception is the "ca", which is
       incompatible with all other machines except 
       "core". */

#define bfd_mach_i960_core      1
#define bfd_mach_i960_ka_sa     2
#define bfd_mach_i960_kb_sb     3
#define bfd_mach_i960_mc        4
#define bfd_mach_i960_xa        5
#define bfd_mach_i960_ca        6

  bfd_arch_a29k,       /* AMD 29000 */
  bfd_arch_sparc,      /* SPARC */
  bfd_arch_mips,       /* MIPS Rxxxx */
  bfd_arch_i386,       /* Intel 386 */
  bfd_arch_ns32k,      /* National Semiconductor 32xxx */
  bfd_arch_tahoe,      /* CCI/Harris Tahoe */
  bfd_arch_i860,       /* Intel 860 */
  bfd_arch_romp,       /* IBM ROMP PC/RT */
  bfd_arch_alliant,    /* Alliant */
  bfd_arch_convex,     /* Convex */
  bfd_arch_m88k,       /* Motorola 88xxx */
  bfd_arch_pyramid,    /* Pyramid Technology */
  bfd_arch_h8300,      /* Hitachi H8/300 */
  bfd_arch_rs6000,     /* IBM RS/6000 */
  bfd_arch_last
  };
typedef int bfd_reloc_code_type;

typedef struct bfd_arch_info 
{
  int bits_per_word;
  int bits_per_address;
  int bits_per_byte;
  enum bfd_architecture arch;
  long mach;
  char *arch_name;
  CONST  char *printable_name;
  /* true if this is the default machine for the architecture */
 unsigned int section_align_power;
  boolean the_default;	
  CONST struct bfd_arch_info * EXFUN((*compatible),
	(CONST struct bfd_arch_info *a,
	 CONST struct bfd_arch_info *b));

  boolean EXFUN((*scan),(CONST struct bfd_arch_info *,CONST char *));
  unsigned int EXFUN((*disassemble),(bfd_vma addr, CONST char *data,
				     PTR stream));
  CONST struct reloc_howto_struct *EXFUN((*reloc_type_lookup),
    (CONST struct bfd_arch_info *,
    bfd_reloc_code_type  code));

  struct bfd_arch_info *next;

} bfd_arch_info_type;
CONST char *EXFUN(bfd_printable_name, (bfd *abfd));
bfd_arch_info_type *EXFUN(bfd_scan_arch, (CONST char *));
CONST bfd_arch_info_type *EXFUN(bfd_arch_get_compatible, (
    CONST bfd *abfd,
    CONST bfd *bbfd));
void EXFUN(bfd_set_arch_info, (bfd *, bfd_arch_info_type *));
enum bfd_architecture EXFUN(bfd_get_arch, (bfd *abfd));
unsigned long EXFUN(bfd_get_mach, (bfd *abfd));
unsigned int EXFUN(bfd_arch_bits_per_byte, (bfd *abfd));
unsigned int EXFUN(bfd_arch_bits_per_address, (bfd *abfd));
bfd_arch_info_type * EXFUN(bfd_get_arch_info, (bfd *));
bfd_arch_info_type *EXFUN(bfd_lookup_arch
    , (enum bfd_architecture
    arch,
    long machine));
CONST char * EXFUN(bfd_printable_arch_mach
    , (enum bfd_architecture arch, unsigned long machine));
typedef enum bfd_reloc_status 
{
        /* No errors detected */
  bfd_reloc_ok,

        /* The relocation was performed, but there was an overflow. */
  bfd_reloc_overflow,

        /* The address to relocate was not within the section supplied*/
  bfd_reloc_outofrange,

        /* Used by special functions */
  bfd_reloc_continue,

        /* Unused */
  bfd_reloc_notsupported,

        /* Unsupported relocation size requested.  */
  bfd_reloc_other,

        /* The symbol to relocate against was undefined.*/
  bfd_reloc_undefined,

        /* The relocation was performed, but may not be ok - presently
          generated only when linking i960 coff files with i960 b.out
          symbols. */
  bfd_reloc_dangerous
 }
 bfd_reloc_status_type;


typedef struct reloc_cache_entry 
{
        /* A pointer into the canonical table of pointers  */
  struct symbol_cache_entry **sym_ptr_ptr;

        /* offset in section */
  rawdata_offset address;

        /* addend for relocation value */
  bfd_vma addend;    

        /* if sym is null this is the section */
  struct sec *section;

        /* Pointer to how to perform the required relocation */
  CONST struct reloc_howto_struct *howto;

} arelent;
typedef CONST struct reloc_howto_struct 
{ 
        /*  The type field has mainly a documetary use - the back end can
           to what it wants with it, though the normally the back end's
           external idea of what a reloc number would be would be stored
           in this field. For example, the a PC relative word relocation
           in a coff environment would have the type 023 - because that's
           what the outside world calls a R_PCRWORD reloc. */
  unsigned int type;

        /*  The value the final relocation is shifted right by. This drops
           unwanted data from the relocation.  */
  unsigned int rightshift;

        /*  The size of the item to be relocated - 0, is one byte, 1 is 2
           bytes, 3 is four bytes. */
  unsigned int size;

        /*  Now obsolete */
  unsigned int bitsize;

        /*  Notes that the relocation is relative to the location in the
           data section of the addend. The relocation function will
           subtract from the relocation value the address of the location
           being relocated. */
  boolean pc_relative;

        /*  Now obsolete */
  unsigned int bitpos;

        /*  Now obsolete */
  boolean absolute;

        /* Causes the relocation routine to return an error if overflow
          is detected when relocating. */
  boolean complain_on_overflow;

        /* If this field is non null, then the supplied function is
          called rather than the normal function. This allows really
          strange relocation methods to be accomodated (eg, i960 callj
          instructions). */
  bfd_reloc_status_type (*special_function)();

        /* The textual name of the relocation type. */
  char *name;

        /* When performing a partial link, some formats must modify the
          relocations rather than the data - this flag signals this.*/
  boolean partial_inplace;

        /* The src_mask is used to select what parts of the read in data
          are to be used in the relocation sum. Eg, if this was an 8 bit
          bit of data which we read and relocated, this would be
          0x000000ff. When we have relocs which have an addend, such as
          sun4 extended relocs, the value in the offset part of a
          relocating field is garbage so we never use it. In this case
          the mask would be 0x00000000. */
  bfd_word src_mask;

        /* The dst_mask is what parts of the instruction are replaced
          into the instruction. In most cases src_mask == dst_mask,
          except in the above special case, where dst_mask would be
          0x000000ff, and src_mask would be 0x00000000.   */
  bfd_word dst_mask;           

        /* When some formats create PC relative instructions, they leave
          the value of the pc of the place being relocated in the offset
          slot of the instruction, so that a PC relative relocation can
          be made just by adding in an ordinary offset (eg sun3 a.out).
          Some formats leave the displacement part of an instruction
          empty (eg m88k bcs), this flag signals the fact.*/
  boolean pcrel_offset;

} reloc_howto_type;
#define HOWTO(C, R,S,B, P, BI, ABS, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
  {(unsigned)C,R,S,B, P, BI, ABS,O,SF,NAME,INPLACE,MASKSRC,MASKDST,PC}
#define NEWHOWTO( FUNCTION, NAME,SIZE,REL,IN) HOWTO(0,0,SIZE,0,REL,0,false,false,FUNCTION, NAME,false,0,0,IN)

#define HOWTO_PREPARE(relocation, symbol)      \
  {                                            \
  if (symbol != (asymbol *)NULL) {             \
    if (symbol->flags & BSF_FORT_COMM) {       \
      relocation = 0;                          \
    }                                          \
    else {                                     \
      relocation = symbol->value;              \
    }                                          \
  }                                            \
  if (symbol->section != (asection *)NULL) {   \
    relocation += symbol->section->output_section->vma +       \
      symbol->section->output_offset;          \
  }                                            \
}                      
typedef unsigned char bfd_byte;

typedef struct relent_chain {
  arelent relent;
  struct   relent_chain *next;
} arelent_chain;
bfd_reloc_status_type
EXFUN(bfd_perform_relocation
    , (bfd * abfd,
    arelent *reloc_entry,
    PTR data,
    asection *input_section,
    bfd *output_bfd));
typedef enum bfd_reloc_code_real 
{
        /* 16 bits wide, simple reloc */
  BFD_RELOC_16,        

        /* 8 bits wide, but used to form an address like 0xffnn */
  BFD_RELOC_8_FFnn,

        /* 8 bits wide, simple */
  BFD_RELOC_8,

        /* 8 bits wide, pc relative */
  BFD_RELOC_8_PCREL,

        /* The type of reloc used to build a contructor table - at the
          moment probably a 32 bit wide abs address, but the cpu can
          choose. */

  BFD_RELOC_CTOR
 } bfd_reloc_code_real_type;
CONST struct reloc_howto_struct *
EXFUN(bfd_reloc_type_lookup
    , (CONST bfd_arch_info_type *arch, bfd_reloc_code_type code));
typedef struct symbol_cache_entry 
{
	 /* A pointer to the BFD which owns the symbol. This information
	   is necessary so that a back end can work out what additional
   	   (invisible to the application writer) information is carried
	   with the symbol.  */

  struct _bfd *the_bfd;

	 /* The text of the symbol. The name is left alone, and not copied - the
	   application may not alter it. */
  CONST char *name;

	 /* The value of the symbol.*/
  symvalue value;

	 /* Attributes of a symbol: */

#define BSF_NO_FLAGS    0x00

	 /* The symbol has local scope; <<static>> in <<C>>. The value
 	   is the offset into the section of the data. */
#define BSF_LOCAL	0x01

	 /* The symbol has global scope; initialized data in <<C>>. The
	   value is the offset into the section of the data. */
#define BSF_GLOBAL	0x02

	 /* Obsolete */
#define BSF_IMPORT	0x04

	 /* The symbol has global scope, and is exported. The value is
	   the offset into the section of the data. */
#define BSF_EXPORT	0x08

	 /* The symbol is undefined. <<extern>> in <<C>>. The value has
	   no meaning. */
#define BSF_UNDEFINED	0x10	

	 /* The symbol is common, initialized to zero; default in
	   <<C>>. The value is the size of the object in bytes. */
#define BSF_FORT_COMM	0x20	

	 /* A normal C symbol would be one of:
	   <<BSF_LOCAL>>, <<BSF_FORT_COMM>>,  <<BSF_UNDEFINED>> or
	   <<BSF_EXPORT|BSD_GLOBAL>> */

	 /* The symbol is a debugging record. The value has an arbitary
	   meaning. */
#define BSF_DEBUGGING	0x40

	 /* The symbol has no section attached, any value is the actual
	   value and is not a relative offset to a section. */
#define BSF_ABSOLUTE	0x80

	 /* Used by the linker */
#define BSF_KEEP        0x10000
#define BSF_KEEP_G      0x80000

	 /* Unused */
#define BSF_WEAK        0x100000
#define BSF_CTOR        0x200000 
#define BSF_FAKE        0x400000 

	 /* The symbol used to be a common symbol, but now it is
	   allocated. */
#define BSF_OLD_COMMON  0x800000  

	 /* The default value for common data. */
#define BFD_FORT_COMM_DEFAULT_VALUE 0

	 /* In some files the type of a symbol sometimes alters its
	   location in an output file - ie in coff a <<ISFCN>> symbol
	   which is also <<C_EXT>> symbol appears where it was
	   declared and not at the end of a section.  This bit is set
  	   by the target BFD part to convey this information. */

#define BSF_NOT_AT_END    0x40000

	 /* Signal that the symbol is the label of constructor section. */
#define BSF_CONSTRUCTOR   0x1000000

	 /* Signal that the symbol is a warning symbol. If the symbol
	   is a warning symbol, then the value field (I know this is
	   tacky) will point to the asymbol which when referenced will
	   cause the warning. */
#define BSF_WARNING       0x2000000

	 /* Signal that the symbol is indirect. The value of the symbol
	   is a pointer to an undefined asymbol which contains the
	   name to use instead. */
#define BSF_INDIRECT     0x4000000

  flagword flags;

	 /* A pointer to the section to which this symbol is relative,
	   or 0 if the symbol is absolute or undefined. Note that it
	   is not sufficient to set this location to 0 to mark a
	   symbol as absolute - the flag <<BSF_ABSOLUTE>> must be set
	   also. */
  struct sec *section;

	 /* Back end special data. This is being phased out in favour
	   of making this a union. */
  PTR udata;	

} asymbol;
#define get_symtab_upper_bound(abfd) \
     BFD_SEND (abfd, _get_symtab_upper_bound, (abfd))
#define bfd_canonicalize_symtab(abfd, location) \
     BFD_SEND (abfd, _bfd_canonicalize_symtab,\
                  (abfd, location))
boolean EXFUN(bfd_set_symtab , (bfd *, asymbol **, unsigned int ));
void EXFUN(bfd_print_symbol_vandf, (PTR file, asymbol *symbol));
#define bfd_make_empty_symbol(abfd) \
     BFD_SEND (abfd, _bfd_make_empty_symbol, (abfd))
int EXFUN(bfd_decode_symclass, (asymbol *symbol));
struct _bfd 
{
     /* The filename the application opened the BFD with.  */
    CONST char *filename;                

     /* A pointer to the target jump table.             */
    struct bfd_target *xvec;

     /* To avoid dragging too many header files into every file that
       includes @file{bfd.h}, IOSTREAM has been declared as a "char
       *", and MTIME as a "long".  Their correct types, to which they
       are cast when used, are "FILE *" and "time_t".    The iostream
       is the result of an fopen on the filename. */
    char *iostream;

     /* Is the file being cached */

    boolean cacheable;

     /* Marks whether there was a default target specified when the
       BFD was opened. This is used to select what matching algorithm
       to use to chose the back end. */

    boolean target_defaulted;

     /* The caching routines use these to maintain a
       least-recently-used list of BFDs */

    struct _bfd *lru_prev, *lru_next;

     /* When a file is closed by the caching routines, BFD retains
       state information on the file here: 
     */

    file_ptr where;              

     /* and here:*/

    boolean opened_once;

     /* Set if we have a locally maintained mtime value, rather than
       getting it from the file each time: */

    boolean mtime_set;

     /* File modified time, if mtime_set is true: */

    long mtime;          

     /* Reserved for an unimplemented file locking extension.*/

    int ifd;

     /* The format which belongs to the BFD.*/

    bfd_format format;

     /* The direction the BFD was opened with*/

    enum bfd_direction {no_direction = 0,
                        read_direction = 1,
                        write_direction = 2,
                        both_direction = 3} direction;

     /* Format_specific flags*/

    flagword flags;              

     /* Currently my_archive is tested before adding origin to
       anything. I believe that this can become always an add of
       origin, with origin set to 0 for non archive files.   */

    file_ptr origin;             

     /* Remember when output has begun, to stop strange things
       happening. */
    boolean output_has_begun;

     /* Pointer to linked list of sections*/
    struct sec  *sections;

     /* The number of sections */
    unsigned int section_count;

     /* Stuff only useful for object files: 
       The start address. */
    bfd_vma start_address;

     /* Used for input and output*/
    unsigned int symcount;

     /* Symbol table for output BFD*/
    struct symbol_cache_entry  **outsymbols;             

     /* Pointer to structure which contains architecture information*/
    struct bfd_arch_info *arch_info;

     /* Stuff only useful for archives:*/
    PTR arelt_data;              
    struct _bfd *my_archive;     
    struct _bfd *next;           
    struct _bfd *archive_head;   
    boolean has_armap;           

     /* Used by the back end to hold private data. */
    PTR tdata;

     /* Used by the application to hold private data*/
    PTR usrdata;

     /* Where all the allocated stuff under this BFD goes */
    struct obstack memory;
};

unsigned int EXFUN(bfd_get_reloc_upper_bound, (bfd *abfd, asection *sect));
unsigned int EXFUN(bfd_canonicalize_reloc
    , (bfd *abfd,
    asection *sec,
    arelent **loc,
    asymbol	**syms));
boolean EXFUN(bfd_set_file_flags, (bfd *abfd, flagword flags));
void EXFUN(bfd_set_reloc
    , (bfd *abfd, asection *sec, arelent **rel, unsigned int count)
    
    );
boolean EXFUN(bfd_set_start_address, (bfd *, bfd_vma));
long EXFUN(bfd_get_mtime, (bfd *));
#define bfd_sizeof_headers(abfd, reloc) \
     BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))

#define bfd_find_nearest_line(abfd, sec, syms, off, file, func, line) \
     BFD_SEND (abfd, _bfd_find_nearest_line,  (abfd, sec, syms, off, file, func, line))

#define bfd_debug_info_start(abfd) \
        BFD_SEND (abfd, _bfd_debug_info_start, (abfd))

#define bfd_debug_info_end(abfd) \
        BFD_SEND (abfd, _bfd_debug_info_end, (abfd))

#define bfd_debug_info_accumulate(abfd, section) \
        BFD_SEND (abfd, _bfd_debug_info_accumulate, (abfd, section))

#define bfd_stat_arch_elt(abfd, stat) \
        BFD_SEND (abfd, _bfd_stat_arch_elt,(abfd, stat))

#define bfd_coff_swap_aux_in(a,e,t,c,i) \
        BFD_SEND (a, _bfd_coff_swap_aux_in, (a,e,t,c,i))

#define bfd_coff_swap_sym_in(a,e,i) \
        BFD_SEND (a, _bfd_coff_swap_sym_in, (a,e,i))

#define bfd_coff_swap_lineno_in(a,e,i) \
        BFD_SEND ( a, _bfd_coff_swap_lineno_in, (a,e,i))

#define bfd_set_arch_mach(abfd, arch, mach)\
        BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))

#define bfd_coff_swap_reloc_out(abfd, i, o) \
        BFD_SEND (abfd, _bfd_coff_swap_reloc_out, (abfd, i, o))

#define bfd_coff_swap_lineno_out(abfd, i, o) \
        BFD_SEND (abfd, _bfd_coff_swap_lineno_out, (abfd, i, o))

#define bfd_coff_swap_aux_out(abfd, i, t,c,o) \
        BFD_SEND (abfd, _bfd_coff_swap_aux_out, (abfd, i,t,c, o))

#define bfd_coff_swap_sym_out(abfd, i,o) \
        BFD_SEND (abfd, _bfd_coff_swap_sym_out, (abfd, i, o))

#define bfd_coff_swap_scnhdr_out(abfd, i,o) \
        BFD_SEND (abfd, _bfd_coff_swap_scnhdr_out, (abfd, i, o))

#define bfd_coff_swap_filehdr_out(abfd, i,o) \
        BFD_SEND (abfd, _bfd_coff_swap_filehdr_out, (abfd, i, o))

#define bfd_coff_swap_aouthdr_out(abfd, i,o) \
        BFD_SEND (abfd, _bfd_coff_swap_aouthdr_out, (abfd, i, o))

symindex EXFUN(bfd_get_next_mapent, (bfd *, symindex, carsym **));
boolean EXFUN(bfd_set_archive_head, (bfd *output, bfd *new_head));
bfd *EXFUN(bfd_get_elt_at_index, (bfd *, int));
bfd* EXFUN(bfd_openr_next_archived_file, (bfd *archive, bfd *previous));
CONST char *EXFUN(bfd_core_file_failing_command, (bfd *));
int EXFUN(bfd_core_file_failing_signal, (bfd *));
boolean EXFUN(core_file_matches_executable_p
    , (bfd *core_bfd, bfd *exec_bfd));
#define SDEF(ret, name, arglist) \
                PROTO(ret,(*name),arglist)
#define SDEF_FMT(ret, name, arglist) \
                PROTO(ret,(*name[bfd_type_end]),arglist)
#define BFD_SEND(bfd, message, arglist) \
               ((*((bfd)->xvec->message)) arglist)
#define BFD_SEND_FMT(bfd, message, arglist) \
            (((bfd)->xvec->message[(int)((bfd)->format)]) arglist)
typedef struct bfd_target
{
  char *name;
  enum target_flavour {
    bfd_target_unknown_flavour,
    bfd_target_aout_flavour,
    bfd_target_coff_flavour,
    bfd_target_elf_flavour,
    bfd_target_ieee_flavour,
    bfd_target_oasys_flavour,
    bfd_target_srec_flavour} flavour;
  boolean byteorder_big_p;
  boolean header_byteorder_big_p;
  flagword object_flags;       
  flagword section_flags;
  char ar_pad_char;            
 unsigned short ar_max_namelen;
  unsigned int align_power_min;
  SDEF (bfd_vma,      bfd_getx64, (bfd_byte *));
  SDEF (void,         bfd_putx64, (bfd_vma, bfd_byte *));
  SDEF (bfd_vma, bfd_getx32, (bfd_byte *));
  SDEF (void,         bfd_putx32, (bfd_vma, bfd_byte *));
  SDEF (bfd_vma, bfd_getx16, (bfd_byte *));
  SDEF (void,         bfd_putx16, (bfd_vma, bfd_byte *));
  SDEF (bfd_vma,   bfd_h_getx64, (bfd_byte *));
  SDEF (void,          bfd_h_putx64, (bfd_vma, bfd_byte *));
  SDEF (bfd_vma,  bfd_h_getx32, (bfd_byte *));
  SDEF (void,          bfd_h_putx32, (bfd_vma, bfd_byte *));
  SDEF (bfd_vma,  bfd_h_getx16, (bfd_byte *));
  SDEF (void,          bfd_h_putx16, (bfd_vma, bfd_byte *));
  SDEF_FMT (struct bfd_target *, _bfd_check_format, (bfd *));
  SDEF_FMT (boolean,            _bfd_set_format, (bfd *));
  SDEF_FMT (boolean,            _bfd_write_contents, (bfd *));
  SDEF (char *, _core_file_failing_command, (bfd *));
  SDEF (int,    _core_file_failing_signal, (bfd *));
  SDEF (boolean, _core_file_matches_executable_p, (bfd *, bfd *));
 SDEF (boolean, _bfd_slurp_armap, (bfd *));
 SDEF (boolean, _bfd_slurp_extended_name_table, (bfd *));
 SDEF (void,   _bfd_truncate_arname, (bfd *, CONST char *, char *));
 SDEF (boolean, write_armap, (bfd *arch, 
                              unsigned int elength,
                              struct orl *map,
                              unsigned int orl_count, 
                              int stridx));
  SDEF (boolean, _close_and_cleanup, (bfd *));
  SDEF (boolean, _bfd_set_section_contents, (bfd *, sec_ptr, PTR,
                                            file_ptr, bfd_size_type));
  SDEF (boolean, _bfd_get_section_contents, (bfd *, sec_ptr, PTR, 
                                            file_ptr, bfd_size_type));
  SDEF (boolean, _new_section_hook, (bfd *, sec_ptr));
  SDEF (unsigned int, _get_symtab_upper_bound, (bfd *));
  SDEF (unsigned int, _bfd_canonicalize_symtab,
           (bfd *, struct symbol_cache_entry **));
  SDEF (unsigned int, _get_reloc_upper_bound, (bfd *, sec_ptr));
  SDEF (unsigned int, _bfd_canonicalize_reloc, (bfd *, sec_ptr, arelent **,
                                               struct symbol_cache_entry**));
  SDEF (struct symbol_cache_entry  *, _bfd_make_empty_symbol, (bfd *));
  SDEF (void,     _bfd_print_symbol, (bfd *, PTR, struct symbol_cache_entry  *,
                                      bfd_print_symbol_type));
#define bfd_print_symbol(b,p,s,e) BFD_SEND(b, _bfd_print_symbol, (b,p,s,e))
  SDEF (alent *,   _get_lineno, (bfd *, struct symbol_cache_entry  *));

  SDEF (boolean,   _bfd_set_arch_mach, (bfd *, enum bfd_architecture,
                                       unsigned long));

  SDEF (bfd *,  openr_next_archived_file, (bfd *arch, bfd *prev));
  SDEF (boolean, _bfd_find_nearest_line,
        (bfd *abfd, struct sec  *section,
         struct symbol_cache_entry  **symbols,bfd_vma offset,
        CONST char **file, CONST char **func, unsigned int *line));
  SDEF (int,    _bfd_stat_arch_elt, (bfd *, struct stat *));

  SDEF (int,    _bfd_sizeof_headers, (bfd *, boolean));

  SDEF (void, _bfd_debug_info_start, (bfd *));
  SDEF (void, _bfd_debug_info_end, (bfd *));
  SDEF (void, _bfd_debug_info_accumulate, (bfd *, struct sec  *));
  SDEF(void, _bfd_coff_swap_aux_in,(
       bfd            *abfd ,
       PTR             ext,
       int             type,
       int             class ,
       PTR             in));

  SDEF(void, _bfd_coff_swap_sym_in,(
       bfd            *abfd ,
       PTR             ext,
       PTR             in));

  SDEF(void, _bfd_coff_swap_lineno_in,  (
       bfd            *abfd,
       PTR            ext,
       PTR             in));

 SDEF(unsigned int, _bfd_coff_swap_aux_out,(
       bfd   	*abfd,
       PTR	in,
       int    	type,
       int    	class,
       PTR    	ext));

 SDEF(unsigned int, _bfd_coff_swap_sym_out,(
      bfd      *abfd,
      PTR	in,
      PTR	ext));

 SDEF(unsigned int, _bfd_coff_swap_lineno_out,(
      	bfd   	*abfd,
      	PTR	in,
	PTR	ext));

 SDEF(unsigned int, _bfd_coff_swap_reloc_out,(
      	bfd     *abfd,
     	PTR	src,
	PTR	dst));

 SDEF(unsigned int, _bfd_coff_swap_filehdr_out,(
      	bfd  	*abfd,
	PTR 	in,
	PTR 	out));

 SDEF(unsigned int, _bfd_coff_swap_aouthdr_out,(
      	bfd 	*abfd,
	PTR 	in,
	PTR	out));

 SDEF(unsigned int, _bfd_coff_swap_scnhdr_out,(
      	bfd  	*abfd,
      	PTR	in,
	PTR	out));

} bfd_target;
bfd_target *EXFUN(bfd_find_target, (CONST char *, bfd *));
CONST char **EXFUN(bfd_target_list, ());
boolean EXFUN(bfd_check_format, (bfd *abfd, bfd_format format));
boolean EXFUN(bfd_set_format, (bfd *, bfd_format));
CONST char *EXFUN(bfd_format_string, (bfd_format));
#endif