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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [bfd.c] - Diff between revs 157 and 225

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Line 1... Line 1...
/* Generic BFD library interface and support routines.
/* Generic BFD library interface and support routines.
   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   Free Software Foundation, Inc.
   Free Software Foundation, Inc.
   Written by Cygnus Support.
   Written by Cygnus Support.
 
 
   This file is part of BFD, the Binary File Descriptor library.
   This file is part of BFD, the Binary File Descriptor library.
 
 
Line 33... Line 33...
        contains the major data about the file and pointers
        contains the major data about the file and pointers
        to the rest of the data.
        to the rest of the data.
 
 
CODE_FRAGMENT
CODE_FRAGMENT
.
.
 
.enum bfd_direction
 
.  {
 
.    no_direction = 0,
 
.    read_direction = 1,
 
.    write_direction = 2,
 
.    both_direction = 3
 
.  };
 
.
.struct bfd
.struct bfd
.{
.{
.  {* A unique identifier of the BFD  *}
.  {* A unique identifier of the BFD  *}
.  unsigned int id;
.  unsigned int id;
.
.
Line 49... Line 57...
.  {* The IOSTREAM, and corresponding IO vector that provide access
.  {* The IOSTREAM, and corresponding IO vector that provide access
.     to the file backing the BFD.  *}
.     to the file backing the BFD.  *}
.  void *iostream;
.  void *iostream;
.  const struct bfd_iovec *iovec;
.  const struct bfd_iovec *iovec;
.
.
.  {* Is the file descriptor being cached?  That is, can it be closed as
 
.     needed, and re-opened when accessed later?  *}
 
.  bfd_boolean cacheable;
 
.
 
.  {* Marks whether there was a default target specified when the
 
.     BFD was opened. This is used to select which matching algorithm
 
.     to use to choose the back end.  *}
 
.  bfd_boolean target_defaulted;
 
.
 
.  {* The caching routines use these to maintain a
.  {* The caching routines use these to maintain a
.     least-recently-used list of BFDs.  *}
.     least-recently-used list of BFDs.  *}
.  struct bfd *lru_prev, *lru_next;
.  struct bfd *lru_prev, *lru_next;
.
.
.  {* When a file is closed by the caching routines, BFD retains
.  {* When a file is closed by the caching routines, BFD retains
.     state information on the file here...  *}
.     state information on the file here...  *}
.  ufile_ptr where;
.  ufile_ptr where;
.
.
.  {* ... and here: (``once'' means at least once).  *}
 
.  bfd_boolean opened_once;
 
.
 
.  {* Set if we have a locally maintained mtime value, rather than
 
.     getting it from the file each time.  *}
 
.  bfd_boolean mtime_set;
 
.
 
.  {* File modified time, if mtime_set is TRUE.  *}
.  {* File modified time, if mtime_set is TRUE.  *}
.  long mtime;
.  long mtime;
.
.
.  {* Reserved for an unimplemented file locking extension.  *}
.  {* Reserved for an unimplemented file locking extension.  *}
.  int ifd;
.  int ifd;
.
.
.  {* The format which belongs to the BFD. (object, core, etc.)  *}
.  {* The format which belongs to the BFD. (object, core, etc.)  *}
.  bfd_format format;
.  bfd_format format;
.
.
.  {* The direction with which the BFD was opened.  *}
.  {* The direction with which the BFD was opened.  *}
.  enum bfd_direction
.  enum bfd_direction direction;
.    {
 
.      no_direction = 0,
 
.      read_direction = 1,
 
.      write_direction = 2,
 
.      both_direction = 3
 
.    }
 
.  direction;
 
.
.
.  {* Format_specific flags.  *}
.  {* Format_specific flags.  *}
.  flagword flags;
.  flagword flags;
.
.
 
.  {* Values that may appear in the flags field of a BFD.  These also
 
.     appear in the object_flags field of the bfd_target structure, where
 
.     they indicate the set of flags used by that backend (not all flags
 
.     are meaningful for all object file formats) (FIXME: at the moment,
 
.     the object_flags values have mostly just been copied from backend
 
.     to another, and are not necessarily correct).  *}
 
.
 
.#define BFD_NO_FLAGS   0x00
 
.
 
.  {* BFD contains relocation entries.  *}
 
.#define HAS_RELOC      0x01
 
.
 
.  {* BFD is directly executable.  *}
 
.#define EXEC_P         0x02
 
.
 
.  {* BFD has line number information (basically used for F_LNNO in a
 
.     COFF header).  *}
 
.#define HAS_LINENO     0x04
 
.
 
.  {* BFD has debugging information.  *}
 
.#define HAS_DEBUG      0x08
 
.
 
.  {* BFD has symbols.  *}
 
.#define HAS_SYMS       0x10
 
.
 
.  {* BFD has local symbols (basically used for F_LSYMS in a COFF
 
.     header).  *}
 
.#define HAS_LOCALS     0x20
 
.
 
.  {* BFD is a dynamic object.  *}
 
.#define DYNAMIC        0x40
 
.
 
.  {* Text section is write protected (if D_PAGED is not set, this is
 
.     like an a.out NMAGIC file) (the linker sets this by default, but
 
.     clears it for -r or -N).  *}
 
.#define WP_TEXT        0x80
 
.
 
.  {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
 
.     linker sets this by default, but clears it for -r or -n or -N).  *}
 
.#define D_PAGED        0x100
 
.
 
.  {* BFD is relaxable (this means that bfd_relax_section may be able to
 
.     do something) (sometimes bfd_relax_section can do something even if
 
.     this is not set).  *}
 
.#define BFD_IS_RELAXABLE 0x200
 
.
 
.  {* This may be set before writing out a BFD to request using a
 
.     traditional format.  For example, this is used to request that when
 
.     writing out an a.out object the symbols not be hashed to eliminate
 
.     duplicates.  *}
 
.#define BFD_TRADITIONAL_FORMAT 0x400
 
.
 
.  {* This flag indicates that the BFD contents are actually cached
 
.     in memory.  If this is set, iostream points to a bfd_in_memory
 
.     struct.  *}
 
.#define BFD_IN_MEMORY 0x800
 
.
 
.  {* The sections in this BFD specify a memory page.  *}
 
.#define HAS_LOAD_PAGE 0x1000
 
.
 
.  {* This BFD has been created by the linker and doesn't correspond
 
.     to any input file.  *}
 
.#define BFD_LINKER_CREATED 0x2000
 
.
 
.  {* This may be set before writing out a BFD to request that it
 
.     be written using values for UIDs, GIDs, timestamps, etc. that
 
.     will be consistent from run to run.  *}
 
.#define BFD_DETERMINISTIC_OUTPUT 0x4000
 
.
.  {* Currently my_archive is tested before adding origin to
.  {* Currently my_archive is tested before adding origin to
.     anything. I believe that this can become always an add of
.     anything. I believe that this can become always an add of
.     origin, with origin set to 0 for non archive files.  *}
.     origin, with origin set to 0 for non archive files.  *}
.  ufile_ptr origin;
.  ufile_ptr origin;
.
.
.  {* Remember when output has begun, to stop strange things
.  {* The origin in the archive of the proxy entry.  This will
.     from happening.  *}
.     normally be the same as origin, except for thin archives,
.  bfd_boolean output_has_begun;
.     when it will contain the current offset of the proxy in the
 
.     thin archive rather than the offset of the bfd in its actual
 
.     container.  *}
 
.  ufile_ptr proxy_origin;
.
.
.  {* A hash table for section names.  *}
.  {* A hash table for section names.  *}
.  struct bfd_hash_table section_htab;
.  struct bfd_hash_table section_htab;
.
.
.  {* Pointer to linked list of sections.  *}
.  {* Pointer to linked list of sections.  *}
Line 123... Line 180...
.  bfd_vma start_address;
.  bfd_vma start_address;
.
.
.  {* Used for input and output.  *}
.  {* Used for input and output.  *}
.  unsigned int symcount;
.  unsigned int symcount;
.
.
.  {* Symbol table for output BFD (with symcount entries).  *}
.  {* Symbol table for output BFD (with symcount entries).
 
.     Also used by the linker to cache input BFD symbols.  *}
.  struct bfd_symbol  **outsymbols;
.  struct bfd_symbol  **outsymbols;
.
.
.  {* Used for slurped dynamic symbol tables.  *}
.  {* Used for slurped dynamic symbol tables.  *}
.  unsigned int dynsymcount;
.  unsigned int dynsymcount;
.
.
.  {* Pointer to structure which contains architecture information.  *}
.  {* Pointer to structure which contains architecture information.  *}
.  const struct bfd_arch_info *arch_info;
.  const struct bfd_arch_info *arch_info;
.
.
.  {* Flag set if symbols from this BFD should not be exported.  *}
 
.  bfd_boolean no_export;
 
.
 
.  {* Stuff only useful for archives.  *}
.  {* Stuff only useful for archives.  *}
.  void *arelt_data;
.  void *arelt_data;
.  struct bfd *my_archive;      {* The containing archive BFD.  *}
.  struct bfd *my_archive;      {* The containing archive BFD.  *}
.  struct bfd *archive_next;    {* The next BFD in the archive.  *}
.  struct bfd *archive_next;    {* The next BFD in the archive.  *}
.  struct bfd *archive_head;    {* The first BFD in the archive.  *}
.  struct bfd *archive_head;    {* The first BFD in the archive.  *}
.  bfd_boolean has_armap;
.  struct bfd *nested_archives; {* List of nested archive in a flattened
 
.                                  thin archive.  *}
.
.
.  {* A chain of BFD structures involved in a link.  *}
.  {* A chain of BFD structures involved in a link.  *}
.  struct bfd *link_next;
.  struct bfd *link_next;
.
.
.  {* A field used by _bfd_generic_link_add_archive_symbols.  This will
.  {* A field used by _bfd_generic_link_add_archive_symbols.  This will
Line 163... Line 219...
.      struct xcoff_tdata *xcoff_obj_data;
.      struct xcoff_tdata *xcoff_obj_data;
.      struct ecoff_tdata *ecoff_obj_data;
.      struct ecoff_tdata *ecoff_obj_data;
.      struct ieee_data_struct *ieee_data;
.      struct ieee_data_struct *ieee_data;
.      struct ieee_ar_data_struct *ieee_ar_data;
.      struct ieee_ar_data_struct *ieee_ar_data;
.      struct srec_data_struct *srec_data;
.      struct srec_data_struct *srec_data;
 
.      struct verilog_data_struct *verilog_data;
.      struct ihex_data_struct *ihex_data;
.      struct ihex_data_struct *ihex_data;
.      struct tekhex_data_struct *tekhex_data;
.      struct tekhex_data_struct *tekhex_data;
.      struct elf_obj_tdata *elf_obj_data;
.      struct elf_obj_tdata *elf_obj_data;
.      struct nlm_obj_tdata *nlm_obj_data;
.      struct nlm_obj_tdata *nlm_obj_data;
.      struct bout_data_struct *bout_data;
.      struct bout_data_struct *bout_data;
Line 183... Line 240...
.      struct cisco_core_struct *cisco_core_data;
.      struct cisco_core_struct *cisco_core_data;
.      struct versados_data_struct *versados_data;
.      struct versados_data_struct *versados_data;
.      struct netbsd_core_struct *netbsd_core_data;
.      struct netbsd_core_struct *netbsd_core_data;
.      struct mach_o_data_struct *mach_o_data;
.      struct mach_o_data_struct *mach_o_data;
.      struct mach_o_fat_data_struct *mach_o_fat_data;
.      struct mach_o_fat_data_struct *mach_o_fat_data;
 
.      struct plugin_data_struct *plugin_data;
.      struct bfd_pef_data_struct *pef_data;
.      struct bfd_pef_data_struct *pef_data;
.      struct bfd_pef_xlib_data_struct *pef_xlib_data;
.      struct bfd_pef_xlib_data_struct *pef_xlib_data;
.      struct bfd_sym_data_struct *sym_data;
.      struct bfd_sym_data_struct *sym_data;
.      void *any;
.      void *any;
.    }
.    }
Line 197... Line 255...
.
.
.  {* Where all the allocated stuff under this BFD goes.  This is a
.  {* Where all the allocated stuff under this BFD goes.  This is a
.     struct objalloc *, but we use void * to avoid requiring the inclusion
.     struct objalloc *, but we use void * to avoid requiring the inclusion
.     of objalloc.h.  *}
.     of objalloc.h.  *}
.  void *memory;
.  void *memory;
 
.
 
.  {* Is the file descriptor being cached?  That is, can it be closed as
 
.     needed, and re-opened when accessed later?  *}
 
.  unsigned int cacheable : 1;
 
.
 
.  {* Marks whether there was a default target specified when the
 
.     BFD was opened. This is used to select which matching algorithm
 
.     to use to choose the back end.  *}
 
.  unsigned int target_defaulted : 1;
 
.
 
.  {* ... and here: (``once'' means at least once).  *}
 
.  unsigned int opened_once : 1;
 
.
 
.  {* Set if we have a locally maintained mtime value, rather than
 
.     getting it from the file each time.  *}
 
.  unsigned int mtime_set : 1;
 
.
 
.  {* Flag set if symbols from this BFD should not be exported.  *}
 
.  unsigned int no_export : 1;
 
.
 
.  {* Remember when output has begun, to stop strange things
 
.     from happening.  *}
 
.  unsigned int output_has_begun : 1;
 
.
 
.  {* Have archive map.  *}
 
.  unsigned int has_armap : 1;
 
.
 
.  {* Set if this is a thin archive.  *}
 
.  unsigned int is_thin_archive : 1;
.};
.};
.
.
*/
*/
 
 
#include "sysdep.h"
#include "sysdep.h"
Line 350... Line 437...
         writing an archive, but on one of the input files.  */
         writing an archive, but on one of the input files.  */
      va_list ap;
      va_list ap;
 
 
      va_start (ap, error_tag);
      va_start (ap, error_tag);
      input_bfd = va_arg (ap, bfd *);
      input_bfd = va_arg (ap, bfd *);
      input_error = va_arg (ap, int);
      input_error = (bfd_error_type) va_arg (ap, int);
      if (input_error >= bfd_error_on_input)
      if (input_error >= bfd_error_on_input)
        abort ();
        abort ();
      va_end (ap);
      va_end (ap);
    }
    }
}
}
Line 920... Line 1007...
      || strcmp (name, "pei-x86-64") == 0
      || strcmp (name, "pei-x86-64") == 0
      || strcmp (name, "pe-arm-wince-little") == 0
      || strcmp (name, "pe-arm-wince-little") == 0
      || strcmp (name, "pei-arm-wince-little") == 0)
      || strcmp (name, "pei-arm-wince-little") == 0)
    return 1;
    return 1;
 
 
 
  if (CONST_STRNEQ (name, "mach-o"))
 
    return 0;
 
 
  bfd_set_error (bfd_error_wrong_format);
  bfd_set_error (bfd_error_wrong_format);
  return -1;
  return -1;
}
}
 
 
/*
/*
Line 1357... Line 1447...
  if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
  if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
    return TRUE;
    return TRUE;
 
 
  amt = sizeof (struct elf_segment_map);
  amt = sizeof (struct elf_segment_map);
  amt += ((bfd_size_type) count - 1) * sizeof (asection *);
  amt += ((bfd_size_type) count - 1) * sizeof (asection *);
  m = bfd_zalloc (abfd, amt);
  m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
  if (m == NULL)
  if (m == NULL)
    return FALSE;
    return FALSE;
 
 
  m->p_type = type;
  m->p_type = type;
  m->p_flags = flags;
  m->p_flags = flags;
Line 1391... Line 1481...
    {
    {
      const struct elf_backend_data *bed = get_elf_backend_data (abfd);
      const struct elf_backend_data *bed = get_elf_backend_data (abfd);
      return bed->s->elfclass == ELFCLASS32;
      return bed->s->elfclass == ELFCLASS32;
    }
    }
 
 
  /* For non-ELF, make a guess based on the target name.  */
  /* For non-ELF targets, use architecture information.  */
  return (strstr (bfd_get_target (abfd), "64") == NULL
  return bfd_arch_bits_per_address (abfd) <= 32;
          && strcmp (bfd_get_target (abfd), "mmo") != 0);
 
}
}
#endif
#endif
 
 
/* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
/* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
   target's address size.  */
   target's address size.  */
Line 1613... Line 1702...
DESCRIPTION
DESCRIPTION
        Returns the maximum page size, in bytes, as determined by
        Returns the maximum page size, in bytes, as determined by
        emulation.
        emulation.
 
 
RETURNS
RETURNS
        Returns the maximum page size in bytes for ELF, abort
        Returns the maximum page size in bytes for ELF, 0 otherwise.
        otherwise.
 
*/
*/
 
 
bfd_vma
bfd_vma
bfd_emul_get_maxpagesize (const char *emul)
bfd_emul_get_maxpagesize (const char *emul)
{
{
Line 1627... Line 1715...
  target = bfd_find_target (emul, NULL);
  target = bfd_find_target (emul, NULL);
  if (target != NULL
  if (target != NULL
      && target->flavour == bfd_target_elf_flavour)
      && target->flavour == bfd_target_elf_flavour)
    return xvec_get_elf_backend_data (target)->maxpagesize;
    return xvec_get_elf_backend_data (target)->maxpagesize;
 
 
  abort ();
 
  return 0;
  return 0;
}
}
 
 
static void
static void
bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
Line 1686... Line 1773...
DESCRIPTION
DESCRIPTION
        Returns the common page size, in bytes, as determined by
        Returns the common page size, in bytes, as determined by
        emulation.
        emulation.
 
 
RETURNS
RETURNS
        Returns the common page size in bytes for ELF, abort otherwise.
        Returns the common page size in bytes for ELF, 0 otherwise.
*/
*/
 
 
bfd_vma
bfd_vma
bfd_emul_get_commonpagesize (const char *emul)
bfd_emul_get_commonpagesize (const char *emul)
{
{
Line 1699... Line 1786...
  target = bfd_find_target (emul, NULL);
  target = bfd_find_target (emul, NULL);
  if (target != NULL
  if (target != NULL
      && target->flavour == bfd_target_elf_flavour)
      && target->flavour == bfd_target_elf_flavour)
    return xvec_get_elf_backend_data (target)->commonpagesize;
    return xvec_get_elf_backend_data (target)->commonpagesize;
 
 
  abort ();
 
  return 0;
  return 0;
}
}
 
 
/*
/*
FUNCTION
FUNCTION
Line 1749... Line 1835...
bfd_demangle (bfd *abfd, const char *name, int options)
bfd_demangle (bfd *abfd, const char *name, int options)
{
{
  char *res, *alloc;
  char *res, *alloc;
  const char *pre, *suf;
  const char *pre, *suf;
  size_t pre_len;
  size_t pre_len;
 
  bfd_boolean skip_lead;
 
 
  if (abfd != NULL
  skip_lead = (abfd != NULL
      && *name != '\0'
      && *name != '\0'
      && bfd_get_symbol_leading_char (abfd) == *name)
               && bfd_get_symbol_leading_char (abfd) == *name);
 
  if (skip_lead)
    ++name;
    ++name;
 
 
  /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
  /* This is a hack for better error reporting on XCOFF, PowerPC64-ELF
     or the MS PE format.  These formats have a number of leading '.'s
     or the MS PE format.  These formats have a number of leading '.'s
     on at least some symbols, so we remove all dots to avoid
     on at least some symbols, so we remove all dots to avoid
Line 1769... Line 1857...
  /* Strip off @plt and suchlike too.  */
  /* Strip off @plt and suchlike too.  */
  alloc = NULL;
  alloc = NULL;
  suf = strchr (name, '@');
  suf = strchr (name, '@');
  if (suf != NULL)
  if (suf != NULL)
    {
    {
      alloc = bfd_malloc (suf - name + 1);
      alloc = (char *) bfd_malloc (suf - name + 1);
      if (alloc == NULL)
      if (alloc == NULL)
        return NULL;
        return NULL;
      memcpy (alloc, name, suf - name);
      memcpy (alloc, name, suf - name);
      alloc[suf - name] = '\0';
      alloc[suf - name] = '\0';
      name = alloc;
      name = alloc;
Line 1783... Line 1871...
 
 
  if (alloc != NULL)
  if (alloc != NULL)
    free (alloc);
    free (alloc);
 
 
  if (res == NULL)
  if (res == NULL)
 
    {
 
      if (skip_lead)
 
        {
 
          size_t len = strlen (pre) + 1;
 
          alloc = (char *) bfd_malloc (len);
 
          if (alloc == NULL)
    return NULL;
    return NULL;
 
          memcpy (alloc, pre, len);
 
          return alloc;
 
        }
 
      return NULL;
 
    }
 
 
  /* Put back any prefix or suffix.  */
  /* Put back any prefix or suffix.  */
  if (pre_len != 0 || suf != NULL)
  if (pre_len != 0 || suf != NULL)
    {
    {
      size_t len;
      size_t len;
Line 1796... Line 1895...
 
 
      len = strlen (res);
      len = strlen (res);
      if (suf == NULL)
      if (suf == NULL)
        suf = res + len;
        suf = res + len;
      suf_len = strlen (suf) + 1;
      suf_len = strlen (suf) + 1;
      final = bfd_malloc (pre_len + len + suf_len);
      final = (char *) bfd_malloc (pre_len + len + suf_len);
      if (final != NULL)
      if (final != NULL)
        {
        {
          memcpy (final, pre, pre_len);
          memcpy (final, pre, pre_len);
          memcpy (final + pre_len, res, len);
          memcpy (final + pre_len, res, len);
          memcpy (final + pre_len + len, suf, suf_len);
          memcpy (final + pre_len + len, suf, suf_len);

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