/* Generic BFD library interface and support routines.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
+ 2000, 2001, 2002, 2003
+ Free Software Foundation, Inc.
Written 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.
+ 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. */
+
+/*
+SECTION
+ <<typedef bfd>>
+
+ A BFD has type <<bfd>>; objects of this type are the
+ cornerstone of any application using BFD. Using BFD
+ consists of making references though the BFD and to data in the BFD.
+
+ Here is the structure that defines the type <<bfd>>. It
+ contains the major data about the file and pointers
+ to the rest of the data.
+
+CODE_FRAGMENT
+.
+.struct bfd
+.{
+. {* A unique identifier of the BFD *}
+. unsigned int id;
+.
+. {* The filename the application opened the BFD with. *}
+. const char *filename;
+.
+. {* A pointer to the target jump table. *}
+. const struct bfd_target *xvec;
+.
+. {* To avoid dragging too many header files into every file that
+. includes `<<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. However, if the
+. BFD_IN_MEMORY flag is set, then iostream is actually a pointer
+. to a bfd_in_memory struct. *}
+. PTR iostream;
+.
+. {* 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
+. 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... *}
+. 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. *}
+. long mtime;
+.
+. {* Reserved for an unimplemented file locking extension. *}
+. int ifd;
+.
+. {* The format which belongs to the BFD. (object, core, etc.) *}
+. bfd_format format;
+.
+. {* The direction with which the BFD was opened. *}
+. 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. *}
+. ufile_ptr origin;
+.
+. {* Remember when output has begun, to stop strange things
+. from happening. *}
+. bfd_boolean output_has_begun;
+.
+. {* A hash table for section names. *}
+. struct bfd_hash_table section_htab;
+.
+. {* Pointer to linked list of sections. *}
+. struct sec *sections;
+.
+. {* The place where we add to the section list. *}
+. struct sec **section_tail;
+.
+. {* 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 (with symcount entries). *}
+. struct symbol_cache_entry **outsymbols;
+.
+. {* Used for slurped dynamic symbol tables. *}
+. unsigned int dynsymcount;
+.
+. {* Pointer to structure which contains architecture information. *}
+. const struct bfd_arch_info *arch_info;
+.
+. {* Stuff only useful for archives. *}
+. PTR arelt_data;
+. struct bfd *my_archive; {* The containing archive BFD. *}
+. struct bfd *next; {* The next BFD in the archive. *}
+. struct bfd *archive_head; {* The first BFD in the archive. *}
+. bfd_boolean has_armap;
+.
+. {* A chain of BFD structures involved in a link. *}
+. struct bfd *link_next;
+.
+. {* A field used by _bfd_generic_link_add_archive_symbols. This will
+. be used only for archive elements. *}
+. int archive_pass;
+.
+. {* Used by the back end to hold private data. *}
+. union
+. {
+. struct aout_data_struct *aout_data;
+. struct artdata *aout_ar_data;
+. struct _oasys_data *oasys_obj_data;
+. struct _oasys_ar_data *oasys_ar_data;
+. struct coff_tdata *coff_obj_data;
+. struct pe_tdata *pe_obj_data;
+. struct xcoff_tdata *xcoff_obj_data;
+. struct ecoff_tdata *ecoff_obj_data;
+. struct ieee_data_struct *ieee_data;
+. struct ieee_ar_data_struct *ieee_ar_data;
+. struct srec_data_struct *srec_data;
+. struct ihex_data_struct *ihex_data;
+. struct tekhex_data_struct *tekhex_data;
+. struct elf_obj_tdata *elf_obj_data;
+. struct nlm_obj_tdata *nlm_obj_data;
+. struct bout_data_struct *bout_data;
+. struct mmo_data_struct *mmo_data;
+. struct sun_core_struct *sun_core_data;
+. struct sco5_core_struct *sco5_core_data;
+. struct trad_core_struct *trad_core_data;
+. struct som_data_struct *som_data;
+. struct hpux_core_struct *hpux_core_data;
+. struct hppabsd_core_struct *hppabsd_core_data;
+. struct sgi_core_struct *sgi_core_data;
+. struct lynx_core_struct *lynx_core_data;
+. struct osf_core_struct *osf_core_data;
+. struct cisco_core_struct *cisco_core_data;
+. struct versados_data_struct *versados_data;
+. struct netbsd_core_struct *netbsd_core_data;
+. struct mach_o_data_struct *mach_o_data;
+. struct mach_o_fat_data_struct *mach_o_fat_data;
+. struct bfd_pef_data_struct *pef_data;
+. struct bfd_pef_xlib_data_struct *pef_xlib_data;
+. struct bfd_sym_data_struct *sym_data;
+. PTR any;
+. }
+. tdata;
+.
+. {* Used by the application to hold private data. *}
+. PTR usrdata;
+.
+. {* Where all the allocated stuff under this BFD goes. This is a
+. struct objalloc *, but we use PTR to avoid requiring the inclusion of
+. objalloc.h. *}
+. PTR memory;
+.};
+.
+*/
-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. */
+#include "bfd.h"
+#include "bfdver.h"
+#include "sysdep.h"
-/* $Id$ */
+#ifdef ANSI_PROTOTYPES
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
-/*proto*
-@section @code{typedef bfd}
+#include "libiberty.h"
+#include "safe-ctype.h"
+#include "bfdlink.h"
+#include "libbfd.h"
+#include "coff/internal.h"
+#include "coff/sym.h"
+#include "libcoff.h"
+#include "libecoff.h"
+#undef obj_symbols
+#include "elf-bfd.h"
+\f
+/* provide storage for subsystem, stack and heap data which may have been
+ passed in on the command line. Ld puts this data into a bfd_link_info
+ struct which ultimately gets passed in to the bfd. When it arrives, copy
+ it to the following struct so that the data will be available in coffcode.h
+ where it is needed. The typedef's used are defined in bfd.h */
+\f
+/*
+SECTION
+ Error reporting
+
+ Most BFD functions return nonzero on success (check their
+ individual documentation for precise semantics). On an error,
+ they call <<bfd_set_error>> to set an error condition that callers
+ can check by calling <<bfd_get_error>>.
+ If that returns <<bfd_error_system_call>>, then check
+ <<errno>>.
+
+ The easiest way to report a BFD error to the user is to
+ use <<bfd_perror>>.
+
+SUBSECTION
+ Type <<bfd_error_type>>
+
+ The values returned by <<bfd_get_error>> are defined by the
+ enumerated type <<bfd_error_type>>.
+
+CODE_FRAGMENT
+.
+.typedef enum bfd_error
+.{
+. bfd_error_no_error = 0,
+. bfd_error_system_call,
+. bfd_error_invalid_target,
+. bfd_error_wrong_format,
+. bfd_error_wrong_object_format,
+. bfd_error_invalid_operation,
+. bfd_error_no_memory,
+. bfd_error_no_symbols,
+. bfd_error_no_armap,
+. bfd_error_no_more_archived_files,
+. bfd_error_malformed_archive,
+. bfd_error_file_not_recognized,
+. bfd_error_file_ambiguously_recognized,
+. bfd_error_no_contents,
+. bfd_error_nonrepresentable_section,
+. bfd_error_no_debug_section,
+. bfd_error_bad_value,
+. bfd_error_file_truncated,
+. bfd_error_file_too_big,
+. bfd_error_invalid_error_code
+.}
+.bfd_error_type;
+.
+*/
-A BFD is has type @code{bfd}; objects of this type are the cornerstone
-of any application using @code{libbfd}. References though the BFD and
-to data in the BFD give the entire BFD functionality.
+static bfd_error_type bfd_error = bfd_error_no_error;
-Here is the struct used to define the type @code{bfd}. This contains
-the major data about the file, and contains pointers to the rest of
-the data.
+const char *const bfd_errmsgs[] =
+{
+ N_("No error"),
+ N_("System call error"),
+ N_("Invalid bfd target"),
+ N_("File in wrong format"),
+ N_("Archive object file in wrong format"),
+ N_("Invalid operation"),
+ N_("Memory exhausted"),
+ N_("No symbols"),
+ N_("Archive has no index; run ranlib to add one"),
+ N_("No more archived files"),
+ N_("Malformed archive"),
+ N_("File format not recognized"),
+ N_("File format is ambiguous"),
+ N_("Section has no contents"),
+ N_("Nonrepresentable section on output"),
+ N_("Symbol needs debug section which does not exist"),
+ N_("Bad value"),
+ N_("File truncated"),
+ N_("File too big"),
+ N_("#<Invalid error code>")
+};
+
+/*
+FUNCTION
+ bfd_get_error
+
+SYNOPSIS
+ bfd_error_type bfd_get_error (void);
+
+DESCRIPTION
+ Return the current BFD error condition.
+*/
-*+++
+bfd_error_type
+bfd_get_error ()
+{
+ return bfd_error;
+}
-$struct _bfd
-${
- The filename the application opened the BFD with.
+/*
+FUNCTION
+ bfd_set_error
-$ CONST char *filename;
+SYNOPSIS
+ void bfd_set_error (bfd_error_type error_tag);
-A pointer to the target jump table.
+DESCRIPTION
+ Set the BFD error condition to be @var{error_tag}.
+*/
-$ struct bfd_target *xvec;
+void
+bfd_set_error (error_tag)
+ bfd_error_type error_tag;
+{
+ bfd_error = error_tag;
+}
+/*
+FUNCTION
+ bfd_errmsg
-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".
+SYNOPSIS
+ const char *bfd_errmsg (bfd_error_type error_tag);
-The iostream is the result of an fopen on the filename.
+DESCRIPTION
+ Return a string describing the error @var{error_tag}, or
+ the system error if @var{error_tag} is <<bfd_error_system_call>>.
+*/
-$ char *iostream;
+const char *
+bfd_errmsg (error_tag)
+ bfd_error_type error_tag;
+{
+#ifndef errno
+ extern int errno;
+#endif
+ if (error_tag == bfd_error_system_call)
+ return xstrerror (errno);
-Is the file being cached @xref{File Caching}.
+ if ((((int) error_tag < (int) bfd_error_no_error) ||
+ ((int) error_tag > (int) bfd_error_invalid_error_code)))
+ error_tag = bfd_error_invalid_error_code;/* sanity check */
-$ boolean cacheable;
+ return _(bfd_errmsgs [(int)error_tag]);
+}
-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.
+/*
+FUNCTION
+ bfd_perror
-$ boolean target_defaulted;
+SYNOPSIS
+ void bfd_perror (const char *message);
-The caching routines use these to maintain a least-recently-used list of
-BFDs (@pxref{File Caching}).
+DESCRIPTION
+ Print to the standard error stream a string describing the
+ last BFD error that occurred, or the last system error if
+ the last BFD error was a system call failure. If @var{message}
+ is non-NULL and non-empty, the error string printed is preceded
+ by @var{message}, a colon, and a space. It is followed by a newline.
+*/
-$ struct _bfd *lru_prev, *lru_next;
+void
+bfd_perror (message)
+ const char *message;
+{
+ if (bfd_get_error () == bfd_error_system_call)
+ /* Must be a system error then. */
+ perror ((char *)message);
+ else
+ {
+ if (message == NULL || *message == '\0')
+ fprintf (stderr, "%s\n", bfd_errmsg (bfd_get_error ()));
+ else
+ fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_get_error ()));
+ }
+}
-When a file is closed by the caching routines, BFD retains state
-information on the file here:
+/*
+SUBSECTION
+ BFD error handler
-$ file_ptr where;
+ Some BFD functions want to print messages describing the
+ problem. They call a BFD error handler function. This
+ function may be overriden by the program.
-and here:
+ The BFD error handler acts like printf.
-$ boolean opened_once;
+CODE_FRAGMENT
+.
+.typedef void (*bfd_error_handler_type) PARAMS ((const char *, ...));
+.
+*/
-$ boolean mtime_set;
-File modified time
+/* The program name used when printing BFD error messages. */
-$ long mtime;
+static const char *_bfd_error_program_name;
-Reserved for an unimplemented file locking extension.
+/* This is the default routine to handle BFD error messages. */
-$int ifd;
+static void _bfd_default_error_handler PARAMS ((const char *s, ...));
-The format which belongs to the BFD.
+static void
+_bfd_default_error_handler VPARAMS ((const char *s, ...))
+{
+ if (_bfd_error_program_name != NULL)
+ fprintf (stderr, "%s: ", _bfd_error_program_name);
+ else
+ fprintf (stderr, "BFD: ");
-$ bfd_format format;
+ VA_OPEN (p, s);
+ VA_FIXEDARG (p, const char *, s);
+ vfprintf (stderr, s, p);
+ VA_CLOSE (p);
-The direction the BFD was opened with
+ fprintf (stderr, "\n");
+}
-$ enum bfd_direction {no_direction = 0,
-$ read_direction = 1,
-$ write_direction = 2,
-$ both_direction = 3} direction;
+/* This is a function pointer to the routine which should handle BFD
+ error messages. It is called when a BFD routine encounters an
+ error for which it wants to print a message. Going through a
+ function pointer permits a program linked against BFD to intercept
+ the messages and deal with them itself. */
-Format_specific flags
+bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;
-$ flagword flags;
+/*
+FUNCTION
+ bfd_set_error_handler
-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.
+SYNOPSIS
+ bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
-$ file_ptr origin;
+DESCRIPTION
+ Set the BFD error handler function. Returns the previous
+ function.
+*/
-Remember when output has begun, to stop strange things happening.
+bfd_error_handler_type
+bfd_set_error_handler (pnew)
+ bfd_error_handler_type pnew;
+{
+ bfd_error_handler_type pold;
-$ boolean output_has_begun;
+ pold = _bfd_error_handler;
+ _bfd_error_handler = pnew;
+ return pold;
+}
-Pointer to linked list of sections
+/*
+FUNCTION
+ bfd_set_error_program_name
-$ struct sec *sections;
+SYNOPSIS
+ void bfd_set_error_program_name (const char *);
-The number of sections
+DESCRIPTION
+ Set the program name to use when printing a BFD error. This
+ is printed before the error message followed by a colon and
+ space. The string must not be changed after it is passed to
+ this function.
+*/
-$ unsigned int section_count;
+void
+bfd_set_error_program_name (name)
+ const char *name;
+{
+ _bfd_error_program_name = name;
+}
-Stuff only useful for object files:
-The start address.
+/*
+FUNCTION
+ bfd_get_error_handler
-$ bfd_vma start_address;
-Used for input and output
+SYNOPSIS
+ bfd_error_handler_type bfd_get_error_handler (void);
-$ unsigned int symcount;
-Symbol table for output BFD
+DESCRIPTION
+ Return the BFD error handler function.
+*/
-$ struct symbol_cache_entry **outsymbols;
+bfd_error_handler_type
+bfd_get_error_handler ()
+{
+ return _bfd_error_handler;
+}
-Architecture of object machine, eg m68k
+/*
+FUNCTION
+ bfd_archive_filename
-$ enum bfd_architecture obj_arch;
+SYNOPSIS
+ const char *bfd_archive_filename (bfd *);
-Particular machine within arch, e.g. 68010
+DESCRIPTION
+ For a BFD that is a component of an archive, returns a string
+ with both the archive name and file name. For other BFDs, just
+ returns the file name.
+*/
-$ unsigned long obj_machine;
+const char *
+bfd_archive_filename (abfd)
+ bfd *abfd;
+{
+ if (abfd->my_archive)
+ {
+ static size_t curr = 0;
+ static char *buf;
+ size_t needed;
+
+ needed = (strlen (bfd_get_filename (abfd->my_archive))
+ + strlen (bfd_get_filename (abfd)) + 3);
+ if (needed > curr)
+ {
+ if (curr)
+ free (buf);
+ curr = needed + (needed >> 1);
+ buf = bfd_malloc ((bfd_size_type) curr);
+ /* If we can't malloc, fail safe by returning just the file
+ name. This function is only used when building error
+ messages. */
+ if (!buf)
+ {
+ curr = 0;
+ return bfd_get_filename (abfd);
+ }
+ }
+ sprintf (buf, "%s(%s)", bfd_get_filename (abfd->my_archive),
+ bfd_get_filename (abfd));
+ return buf;
+ }
+ else
+ return bfd_get_filename (abfd);
+}
+\f
+/*
+SECTION
+ Symbols
+*/
-Stuff only useful for archives:
+/*
+FUNCTION
+ bfd_get_reloc_upper_bound
-$ PTR arelt_data;
-$ struct _bfd *my_archive;
-$ struct _bfd *next;
-$ struct _bfd *archive_head;
-$ boolean has_armap;
+SYNOPSIS
+ long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
-Used by the back end to hold private data.
+DESCRIPTION
+ Return the number of bytes required to store the
+ relocation information associated with section @var{sect}
+ attached to bfd @var{abfd}. If an error occurs, return -1.
-$ PTR tdata;
+*/
-Used by the application to hold private data
+long
+bfd_get_reloc_upper_bound (abfd, asect)
+ bfd *abfd;
+ sec_ptr asect;
+{
+ if (abfd->format != bfd_object)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
-$ PTR usrdata;
+ return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
+}
-Where all the allocated stuff under this BFD goes (@pxref{Memory Usage}).
+/*
+FUNCTION
+ bfd_canonicalize_reloc
+
+SYNOPSIS
+ long bfd_canonicalize_reloc
+ (bfd *abfd,
+ asection *sec,
+ arelent **loc,
+ asymbol **syms);
+
+DESCRIPTION
+ Call the back end associated with the open BFD
+ @var{abfd} and translate the external form of the relocation
+ information attached to @var{sec} into the internal canonical
+ form. Place the table into memory at @var{loc}, which has
+ been preallocated, usually by a call to
+ <<bfd_get_reloc_upper_bound>>. Returns the number of relocs, or
+ -1 on error.
+
+ The @var{syms} table is also needed for horrible internal magic
+ reasons.
-$ struct obstack memory;
-$};
+*/
+long
+bfd_canonicalize_reloc (abfd, asect, location, symbols)
+ bfd *abfd;
+ sec_ptr asect;
+ arelent **location;
+ asymbol **symbols;
+{
+ if (abfd->format != bfd_object)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
+
+ return BFD_SEND (abfd, _bfd_canonicalize_reloc,
+ (abfd, asect, location, symbols));
+}
-*---
+/*
+FUNCTION
+ bfd_set_reloc
-*/
-#include <sysdep.h>
-#include "bfd.h"
-#include "libbfd.h"
+SYNOPSIS
+ void bfd_set_reloc
+ (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
+DESCRIPTION
+ Set the relocation pointer and count within
+ section @var{sec} to the values @var{rel} and @var{count}.
+ The argument @var{abfd} is ignored.
-short _bfd_host_big_endian = 0x0100;
- /* Accessing the above as (*(char*)&_bfd_host_big_endian), will
- return 1 if the host is big-endian, 0 otherwise.
- (assuming that a short is two bytes long!!! FIXME)
- (See HOST_IS_BIG_ENDIAN_P in bfd.h.) */
-\f
-/** Error handling
- o - Most functions return nonzero on success (check doc for
- precise semantics); 0 or NULL on error.
- o - Internal errors are documented by the value of bfd_error.
- If that is system_call_error then check errno.
- o - The easiest way to report this to the user is to use bfd_perror.
*/
-bfd_ec bfd_error = no_error;
-
-char *bfd_errmsgs[] = { "No error",
- "System call error",
- "Invalid target",
- "File in wrong format",
- "Invalid operation",
- "Memory exhausted",
- "No symbols",
- "No relocation info",
- "No more archived files",
- "Malformed archive",
- "Symbol not found",
- "File format not recognized",
- "File format is ambiguous",
- "Section has no contents",
- "Nonrepresentable section on output",
- "#<Invalid error code>"
- };
-
-static
-void
-DEFUN(bfd_nonrepresentable_section,(abfd, name),
- CONST bfd * CONST abfd AND
- CONST char * CONST name)
-{
- printf("bfd error writing file %s, format %s can't represent section %s\n",
- abfd->filename,
- abfd->xvec->name,
- name);
- exit(1);
+void
+bfd_set_reloc (ignore_abfd, asect, location, count)
+ bfd *ignore_abfd ATTRIBUTE_UNUSED;
+ sec_ptr asect;
+ arelent **location;
+ unsigned int count;
+{
+ asect->orelocation = location;
+ asect->reloc_count = count;
}
-bfd_error_vector_type bfd_error_vector =
- {
- bfd_nonrepresentable_section
- };
+/*
+FUNCTION
+ bfd_set_file_flags
-#if !defined(ANSI_LIBRARIES) && !defined(__STDC__) || HOST_SYS==SUN4_SYS
-char *
-strerror (code)
- int code;
-{
- extern int sys_nerr;
- extern char *sys_errlist[];
+SYNOPSIS
+ bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
- return (((code < 0) || (code >= sys_nerr)) ? "(unknown error)" :
- sys_errlist [code]);
-}
-#endif /* not ANSI_LIBRARIES */
+DESCRIPTION
+ Set the flag word in the BFD @var{abfd} to the value @var{flags}.
+ Possible errors are:
+ o <<bfd_error_wrong_format>> - The target bfd was not of object format.
+ o <<bfd_error_invalid_operation>> - The target bfd was open for reading.
+ o <<bfd_error_invalid_operation>> -
+ The flag word contained a bit which was not applicable to the
+ type of file. E.g., an attempt was made to set the <<D_PAGED>> bit
+ on a BFD format which does not support demand paging.
-char *
-bfd_errmsg (error_tag)
- bfd_ec error_tag;
+*/
+
+bfd_boolean
+bfd_set_file_flags (abfd, flags)
+ bfd *abfd;
+ flagword flags;
{
-#ifndef errno
- extern int errno;
-#endif
- if (error_tag == system_call_error)
- return strerror (errno);
+ if (abfd->format != bfd_object)
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
+ }
+
+ if (bfd_read_p (abfd))
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
- if ((((int)error_tag <(int) no_error) ||
- ((int)error_tag > (int)invalid_error_code)))
- error_tag = invalid_error_code;/* sanity check */
+ bfd_get_file_flags (abfd) = flags;
+ if ((flags & bfd_applicable_file_flags (abfd)) != flags)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
- return bfd_errmsgs [(int)error_tag];
+ return TRUE;
}
-
-void bfd_default_error_trap(error_tag)
-bfd_ec error_tag;
+void
+bfd_assert (file, line)
+ const char *file;
+ int line;
{
- printf("bfd assert fail (%s)\n", bfd_errmsg(error_tag));
+ (*_bfd_error_handler) (_("BFD %s assertion fail %s:%d"),
+ BFD_VERSION_STRING, file, line);
}
-void (*bfd_error_trap)() = bfd_default_error_trap;
-void (*bfd_error_nonrepresentabltrap)() = bfd_default_error_trap;
+/* A more or less friendly abort message. In libbfd.h abort is
+ defined to call this function. */
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
void
-DEFUN(bfd_perror,(message),
- CONST char *message)
-{
- if (bfd_error == system_call_error)
- perror((char *)message); /* must be system error then... */
- else {
- if (message == NULL || *message == '\0')
- fprintf (stderr, "%s\n", bfd_errmsg (bfd_error));
- else
- fprintf (stderr, "%s: %s\n", message, bfd_errmsg (bfd_error));
- }
+_bfd_abort (file, line, fn)
+ const char *file;
+ int line;
+ const char *fn;
+{
+ if (fn != NULL)
+ (*_bfd_error_handler)
+ (_("BFD %s internal error, aborting at %s line %d in %s\n"),
+ BFD_VERSION_STRING, file, line, fn);
+ else
+ (*_bfd_error_handler)
+ (_("BFD %s internal error, aborting at %s line %d\n"),
+ BFD_VERSION_STRING, file, line);
+ (*_bfd_error_handler) (_("Please report this bug.\n"));
+ xexit (EXIT_FAILURE);
}
- \f
-/** Symbols */
+/*
+FUNCTION
+ bfd_get_arch_size
-/* returns the number of octets of storage required */
+SYNOPSIS
+ int bfd_get_arch_size (bfd *abfd);
-unsigned int
-get_reloc_upper_bound (abfd, asect)
+DESCRIPTION
+ Returns the architecture address size, in bits, as determined
+ by the object file's format. For ELF, this information is
+ included in the header.
+
+RETURNS
+ Returns the arch size in bits if known, <<-1>> otherwise.
+*/
+
+int
+bfd_get_arch_size (abfd)
bfd *abfd;
- sec_ptr asect;
{
- if (abfd->format != bfd_object) {
- bfd_error = invalid_operation;
- return 0;
- }
+ if (abfd->xvec->flavour == bfd_target_elf_flavour)
+ return (get_elf_backend_data (abfd))->s->arch_size;
- return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
+ return -1;
}
-unsigned int
-bfd_canonicalize_reloc (abfd, asect, location, symbols)
+/*
+FUNCTION
+ bfd_get_sign_extend_vma
+
+SYNOPSIS
+ int bfd_get_sign_extend_vma (bfd *abfd);
+
+DESCRIPTION
+ Indicates if the target architecture "naturally" sign extends
+ an address. Some architectures implicitly sign extend address
+ values when they are converted to types larger than the size
+ of an address. For instance, bfd_get_start_address() will
+ return an address sign extended to fill a bfd_vma when this is
+ the case.
+
+RETURNS
+ Returns <<1>> if the target architecture is known to sign
+ extend addresses, <<0>> if the target architecture is known to
+ not sign extend addresses, and <<-1>> otherwise.
+*/
+
+int
+bfd_get_sign_extend_vma (abfd)
bfd *abfd;
- sec_ptr asect;
- arelent **location;
- asymbol **symbols;
{
- if (abfd->format != bfd_object) {
- bfd_error = invalid_operation;
- return 0;
- }
+ char *name;
- return BFD_SEND (abfd, _bfd_canonicalize_reloc, (abfd, asect, location, symbols));
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ return (get_elf_backend_data (abfd)->sign_extend_vma);
+
+ name = bfd_get_target (abfd);
+
+ /* Return a proper value for DJGPP COFF (an x86 COFF variant).
+ This function is required for DWARF2 support, but there is
+ no place to store this information in the COFF back end.
+ Should enough other COFF targets add support for DWARF2,
+ a place will have to be found. Until then, this hack will do. */
+ if (strncmp (name, "coff-go32", sizeof ("coff-go32") - 1) == 0)
+ return 1;
+
+ bfd_set_error (bfd_error_wrong_format);
+ return -1;
}
+/*
+FUNCTION
+ bfd_set_start_address
-boolean
-bfd_set_file_flags (abfd, flags)
+SYNOPSIS
+ bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
+
+DESCRIPTION
+ Make @var{vma} the entry point of output BFD @var{abfd}.
+
+RETURNS
+ Returns <<TRUE>> on success, <<FALSE>> otherwise.
+*/
+
+bfd_boolean
+bfd_set_start_address (abfd, vma)
bfd *abfd;
- flagword flags;
+ bfd_vma vma;
{
- if (abfd->format != bfd_object) {
- bfd_error = wrong_format;
- return false;
- }
+ abfd->start_address = vma;
+ return TRUE;
+}
- if (bfd_read_p (abfd)) {
- bfd_error = invalid_operation;
- return false;
- }
+/*
+FUNCTION
+ bfd_get_gp_size
- if ((flags & bfd_applicable_file_flags (abfd)) != flags) {
- bfd_error = invalid_operation;
- return false;
- }
+SYNOPSIS
+ unsigned int bfd_get_gp_size (bfd *abfd);
- bfd_get_file_flags (abfd) = flags;
-return true;
+DESCRIPTION
+ Return the maximum size of objects to be optimized using the GP
+ register under MIPS ECOFF. This is typically set by the <<-G>>
+ argument to the compiler, assembler or linker.
+*/
+
+unsigned int
+bfd_get_gp_size (abfd)
+ bfd *abfd;
+{
+ if (abfd->format == bfd_object)
+ {
+ if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
+ return ecoff_data (abfd)->gp_size;
+ else if (abfd->xvec->flavour == bfd_target_elf_flavour)
+ return elf_gp_size (abfd);
+ }
+ return 0;
}
+/*
+FUNCTION
+ bfd_set_gp_size
+
+SYNOPSIS
+ void bfd_set_gp_size (bfd *abfd, unsigned int i);
+
+DESCRIPTION
+ Set the maximum size of objects to be optimized using the GP
+ register under ECOFF or MIPS ELF. This is typically set by
+ the <<-G>> argument to the compiler, assembler or linker.
+*/
void
-bfd_set_reloc (ignore_abfd, asect, location, count)
- bfd *ignore_abfd;
- sec_ptr asect;
- arelent **location;
- unsigned int count;
+bfd_set_gp_size (abfd, i)
+ bfd *abfd;
+ unsigned int i;
{
- asect->orelocation = location;
- asect->reloc_count = count;
+ /* Don't try to set GP size on an archive or core file! */
+ if (abfd->format != bfd_object)
+ return;
+
+ if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
+ ecoff_data (abfd)->gp_size = i;
+ else if (abfd->xvec->flavour == bfd_target_elf_flavour)
+ elf_gp_size (abfd) = i;
}
-void
-bfd_assert(file, line)
-char *file;
-int line;
+/* Get the GP value. This is an internal function used by some of the
+ relocation special_function routines on targets which support a GP
+ register. */
+
+bfd_vma
+_bfd_get_gp_value (abfd)
+ bfd *abfd;
{
- printf("bfd assertion fail %s:%d\n",file,line);
+ if (abfd->format != bfd_object)
+ return 0;
+
+ if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
+ return ecoff_data (abfd)->gp;
+ else if (abfd->xvec->flavour == bfd_target_elf_flavour)
+ return elf_gp (abfd);
+
+ return 0;
}
+/* Set the GP value. */
-/*proto* bfd_set_start_address
+void
+_bfd_set_gp_value (abfd, v)
+ bfd *abfd;
+ bfd_vma v;
+{
+ if (abfd->format != bfd_object)
+ return;
-Marks the entry point of an output BFD. Returns @code{true} on
-success, @code{false} otherwise.
+ if (abfd->xvec->flavour == bfd_target_ecoff_flavour)
+ ecoff_data (abfd)->gp = v;
+ else if (abfd->xvec->flavour == bfd_target_elf_flavour)
+ elf_gp (abfd) = v;
+}
-*; PROTO(boolean, bfd_set_start_address,(bfd *, bfd_vma));
+/*
+FUNCTION
+ bfd_scan_vma
+
+SYNOPSIS
+ bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
+
+DESCRIPTION
+ Convert, like <<strtoul>>, a numerical expression
+ @var{string} into a <<bfd_vma>> integer, and return that integer.
+ (Though without as many bells and whistles as <<strtoul>>.)
+ The expression is assumed to be unsigned (i.e., positive).
+ If given a @var{base}, it is used as the base for conversion.
+ A base of 0 causes the function to interpret the string
+ in hex if a leading "0x" or "0X" is found, otherwise
+ in octal if a leading zero is found, otherwise in decimal.
+
+ If the value would overflow, the maximum <<bfd_vma>> value is
+ returned.
*/
-boolean
-bfd_set_start_address(abfd, vma)
-bfd *abfd;
-bfd_vma vma;
+bfd_vma
+bfd_scan_vma (string, end, base)
+ const char *string;
+ const char **end;
+ int base;
{
- abfd->start_address = vma;
- return true;
+ bfd_vma value;
+ bfd_vma cutoff;
+ unsigned int cutlim;
+ int overflow;
+
+ /* Let the host do it if possible. */
+ if (sizeof (bfd_vma) <= sizeof (unsigned long))
+ return (bfd_vma) strtoul (string, (char **) end, base);
+
+ if (base == 0)
+ {
+ if (string[0] == '0')
+ {
+ if ((string[1] == 'x') || (string[1] == 'X'))
+ base = 16;
+ else
+ base = 8;
+ }
+ }
+
+ if ((base < 2) || (base > 36))
+ base = 10;
+
+ if (base == 16
+ && string[0] == '0'
+ && (string[1] == 'x' || string[1] == 'X')
+ && ISXDIGIT (string[2]))
+ {
+ string += 2;
+ }
+
+ cutoff = (~ (bfd_vma) 0) / (bfd_vma) base;
+ cutlim = (~ (bfd_vma) 0) % (bfd_vma) base;
+ value = 0;
+ overflow = 0;
+ while (1)
+ {
+ unsigned int digit;
+
+ digit = *string;
+ if (ISDIGIT (digit))
+ digit = digit - '0';
+ else if (ISALPHA (digit))
+ digit = TOUPPER (digit) - 'A' + 10;
+ else
+ break;
+ if (digit >= (unsigned int) base)
+ break;
+ if (value > cutoff || (value == cutoff && digit > cutlim))
+ overflow = 1;
+ value = value * base + digit;
+ ++string;
+ }
+
+ if (overflow)
+ value = ~ (bfd_vma) 0;
+
+ if (end != NULL)
+ *end = string;
+
+ return value;
}
+/*
+FUNCTION
+ bfd_copy_private_bfd_data
-/*proto* bfd_get_mtime
+SYNOPSIS
+ bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
-Return cached file modification time (e.g. as read from archive header
-for archive members, or from file system if we have been called
-before); else determine modify time, cache it, and return it.
+DESCRIPTION
+ Copy private BFD information from the BFD @var{ibfd} to the
+ the BFD @var{obfd}. Return <<TRUE>> on success, <<FALSE>> on error.
+ Possible error returns are:
-*; PROTO(long, bfd_get_mtime, (bfd *));
+ o <<bfd_error_no_memory>> -
+ Not enough memory exists to create private data for @var{obfd}.
+
+.#define bfd_copy_private_bfd_data(ibfd, obfd) \
+. BFD_SEND (obfd, _bfd_copy_private_bfd_data, \
+. (ibfd, obfd))
*/
-long
-bfd_get_mtime (abfd)
+/*
+FUNCTION
+ bfd_merge_private_bfd_data
+
+SYNOPSIS
+ bfd_boolean bfd_merge_private_bfd_data (bfd *ibfd, bfd *obfd);
+
+DESCRIPTION
+ Merge private BFD information from the BFD @var{ibfd} to the
+ the output file BFD @var{obfd} when linking. Return <<TRUE>>
+ on success, <<FALSE>> on error. Possible error returns are:
+
+ o <<bfd_error_no_memory>> -
+ Not enough memory exists to create private data for @var{obfd}.
+
+.#define bfd_merge_private_bfd_data(ibfd, obfd) \
+. BFD_SEND (obfd, _bfd_merge_private_bfd_data, \
+. (ibfd, obfd))
+
+*/
+
+/*
+FUNCTION
+ bfd_set_private_flags
+
+SYNOPSIS
+ bfd_boolean bfd_set_private_flags (bfd *abfd, flagword flags);
+
+DESCRIPTION
+ Set private BFD flag information in the BFD @var{abfd}.
+ Return <<TRUE>> on success, <<FALSE>> on error. Possible error
+ returns are:
+
+ o <<bfd_error_no_memory>> -
+ Not enough memory exists to create private data for @var{obfd}.
+
+.#define bfd_set_private_flags(abfd, flags) \
+. BFD_SEND (abfd, _bfd_set_private_flags, (abfd, flags))
+
+*/
+
+/*
+FUNCTION
+ Other functions
+
+DESCRIPTION
+ The following functions exist but have not yet been documented.
+
+.#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_update_armap_timestamp(abfd) \
+. BFD_SEND (abfd, _bfd_update_armap_timestamp, (abfd))
+.
+.#define bfd_set_arch_mach(abfd, arch, mach)\
+. BFD_SEND ( abfd, _bfd_set_arch_mach, (abfd, arch, mach))
+.
+.#define bfd_relax_section(abfd, section, link_info, again) \
+. BFD_SEND (abfd, _bfd_relax_section, (abfd, section, link_info, again))
+.
+.#define bfd_gc_sections(abfd, link_info) \
+. BFD_SEND (abfd, _bfd_gc_sections, (abfd, link_info))
+.
+.#define bfd_merge_sections(abfd, link_info) \
+. BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
+.
+.#define bfd_discard_group(abfd, sec) \
+. BFD_SEND (abfd, _bfd_discard_group, (abfd, sec))
+.
+.#define bfd_link_hash_table_create(abfd) \
+. BFD_SEND (abfd, _bfd_link_hash_table_create, (abfd))
+.
+.#define bfd_link_hash_table_free(abfd, hash) \
+. BFD_SEND (abfd, _bfd_link_hash_table_free, (hash))
+.
+.#define bfd_link_add_symbols(abfd, info) \
+. BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
+.
+.#define bfd_link_just_syms(sec, info) \
+. BFD_SEND (abfd, _bfd_link_just_syms, (sec, info))
+.
+.#define bfd_final_link(abfd, info) \
+. BFD_SEND (abfd, _bfd_final_link, (abfd, info))
+.
+.#define bfd_free_cached_info(abfd) \
+. BFD_SEND (abfd, _bfd_free_cached_info, (abfd))
+.
+.#define bfd_get_dynamic_symtab_upper_bound(abfd) \
+. BFD_SEND (abfd, _bfd_get_dynamic_symtab_upper_bound, (abfd))
+.
+.#define bfd_print_private_bfd_data(abfd, file)\
+. BFD_SEND (abfd, _bfd_print_private_bfd_data, (abfd, file))
+.
+.#define bfd_canonicalize_dynamic_symtab(abfd, asymbols) \
+. BFD_SEND (abfd, _bfd_canonicalize_dynamic_symtab, (abfd, asymbols))
+.
+.#define bfd_get_dynamic_reloc_upper_bound(abfd) \
+. BFD_SEND (abfd, _bfd_get_dynamic_reloc_upper_bound, (abfd))
+.
+.#define bfd_canonicalize_dynamic_reloc(abfd, arels, asyms) \
+. BFD_SEND (abfd, _bfd_canonicalize_dynamic_reloc, (abfd, arels, asyms))
+.
+.extern bfd_byte *bfd_get_relocated_section_contents
+. PARAMS ((bfd *, struct bfd_link_info *,
+. struct bfd_link_order *, bfd_byte *,
+. bfd_boolean, asymbol **));
+.
+
+*/
+
+bfd_byte *
+bfd_get_relocated_section_contents (abfd, link_info, link_order, data,
+ relocateable, symbols)
bfd *abfd;
+ struct bfd_link_info *link_info;
+ struct bfd_link_order *link_order;
+ bfd_byte *data;
+ bfd_boolean relocateable;
+ asymbol **symbols;
{
- FILE *fp;
- struct stat buf;
+ bfd *abfd2;
+ bfd_byte *(*fn) PARAMS ((bfd *, struct bfd_link_info *,
+ struct bfd_link_order *, bfd_byte *, bfd_boolean,
+ asymbol **));
+
+ if (link_order->type == bfd_indirect_link_order)
+ {
+ abfd2 = link_order->u.indirect.section->owner;
+ if (abfd2 == NULL)
+ abfd2 = abfd;
+ }
+ else
+ abfd2 = abfd;
+
+ fn = abfd2->xvec->_bfd_get_relocated_section_contents;
+
+ return (*fn) (abfd, link_info, link_order, data, relocateable, symbols);
+}
- if (abfd->mtime_set)
- return abfd->mtime;
+/* Record information about an ELF program header. */
- fp = bfd_cache_lookup (abfd);
- if (0 != fstat (fileno (fp), &buf))
- return 0;
+bfd_boolean
+bfd_record_phdr (abfd, type, flags_valid, flags, at_valid, at,
+ includes_filehdr, includes_phdrs, count, secs)
+ bfd *abfd;
+ unsigned long type;
+ bfd_boolean flags_valid;
+ flagword flags;
+ bfd_boolean at_valid;
+ bfd_vma at;
+ bfd_boolean includes_filehdr;
+ bfd_boolean includes_phdrs;
+ unsigned int count;
+ asection **secs;
+{
+ struct elf_segment_map *m, **pm;
+ bfd_size_type amt;
+
+ if (bfd_get_flavour (abfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ amt = sizeof (struct elf_segment_map);
+ amt += ((bfd_size_type) count - 1) * sizeof (asection *);
+ m = (struct elf_segment_map *) bfd_alloc (abfd, amt);
+ if (m == NULL)
+ return FALSE;
+
+ m->next = NULL;
+ m->p_type = type;
+ m->p_flags = flags;
+ m->p_paddr = at;
+ m->p_flags_valid = (unsigned int) flags_valid;
+ m->p_paddr_valid = (unsigned int) at_valid;
+ m->includes_filehdr = (unsigned int) includes_filehdr;
+ m->includes_phdrs = (unsigned int) includes_phdrs;
+ m->count = count;
+ if (count > 0)
+ memcpy (m->sections, secs, count * sizeof (asection *));
+
+ for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
+ ;
+ *pm = m;
+
+ return TRUE;
+}
- abfd->mtime_set = true;
- abfd->mtime = buf.st_mtime;
- return abfd->mtime;
+void
+bfd_sprintf_vma (abfd, buf, value)
+ bfd *abfd;
+ char *buf;
+ bfd_vma value;
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ get_elf_backend_data (abfd)->elf_backend_sprintf_vma (abfd, buf, value);
+ else
+ sprintf_vma (buf, value);
}
-/*proto* stuff
+void
+bfd_fprintf_vma (abfd, stream, value)
+ bfd *abfd;
+ PTR stream;
+ bfd_vma value;
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ get_elf_backend_data (abfd)->elf_backend_fprintf_vma (abfd, stream, value);
+ else
+ fprintf_vma ((FILE *) stream, value);
+}
+
+/*
+FUNCTION
+ bfd_alt_mach_code
+
+SYNOPSIS
+ bfd_boolean bfd_alt_mach_code (bfd *abfd, int alternative);
+
+DESCRIPTION
-*+
+ When more than one machine code number is available for the
+ same machine type, this function can be used to switch between
+ the preferred one (alternative == 0) and any others. Currently,
+ only ELF supports this feature, with up to two alternate
+ machine codes.
+*/
+
+bfd_boolean
+bfd_alt_mach_code (abfd, alternative)
+ bfd *abfd;
+ int alternative;
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ {
+ int code;
+
+ switch (alternative)
+ {
+ case 0:
+ code = get_elf_backend_data (abfd)->elf_machine_code;
+ break;
+
+ case 1:
+ code = get_elf_backend_data (abfd)->elf_machine_alt1;
+ if (code == 0)
+ return FALSE;
+ break;
+
+ case 2:
+ code = get_elf_backend_data (abfd)->elf_machine_alt2;
+ if (code == 0)
+ return FALSE;
+ break;
+
+ default:
+ return FALSE;
+ }
+
+ elf_elfheader (abfd)->e_machine = code;
+
+ return TRUE;
+ }
+
+ return FALSE;
+}
-#define bfd_sizeof_headers(abfd, reloc) \
- BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, reloc))
+/*
+CODE_FRAGMENT
+
+.struct bfd_preserve
+.{
+. PTR marker;
+. PTR tdata;
+. flagword flags;
+. const struct bfd_arch_info *arch_info;
+. struct sec *sections;
+. struct sec **section_tail;
+. unsigned int section_count;
+. struct bfd_hash_table section_htab;
+.};
+.
+*/
-#define bfd_find_nearest_line(abfd, section, symbols, offset, filename_ptr, func, line_ptr) \
- BFD_SEND (abfd, _bfd_find_nearest_line, (abfd, section, symbols, offset, filename_ptr, func, line_ptr))
+/*
+FUNCTION
+ bfd_preserve_save
-#define bfd_debug_info_start(abfd) \
- BFD_SEND (abfd, _bfd_debug_info_start, (abfd))
+SYNOPSIS
+ bfd_boolean bfd_preserve_save (bfd *, struct bfd_preserve *);
-#define bfd_debug_info_end(abfd) \
- BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
+DESCRIPTION
+ When testing an object for compatibility with a particular
+ target back-end, the back-end object_p function needs to set
+ up certain fields in the bfd on successfully recognizing the
+ object. This typically happens in a piecemeal fashion, with
+ failures possible at many points. On failure, the bfd is
+ supposed to be restored to its initial state, which is
+ virtually impossible. However, restoring a subset of the bfd
+ state works in practice. This function stores the subset and
+ reinitializes the bfd.
-#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))
+bfd_boolean
+bfd_preserve_save (abfd, preserve)
+ bfd *abfd;
+ struct bfd_preserve *preserve;
+{
+ preserve->tdata = abfd->tdata.any;
+ preserve->arch_info = abfd->arch_info;
+ preserve->flags = abfd->flags;
+ preserve->sections = abfd->sections;
+ preserve->section_tail = abfd->section_tail;
+ preserve->section_count = abfd->section_count;
+ preserve->section_htab = abfd->section_htab;
+
+ if (! bfd_hash_table_init (&abfd->section_htab, bfd_section_hash_newfunc))
+ return FALSE;
+
+ abfd->tdata.any = NULL;
+ abfd->arch_info = &bfd_default_arch_struct;
+ abfd->flags &= BFD_IN_MEMORY;
+ abfd->sections = NULL;
+ abfd->section_tail = &abfd->sections;
+ abfd->section_count = 0;
+
+ return TRUE;
+}
-#define bfd_coff_swap_aux_in(a,e,t,c,i) \
- BFD_SEND (a, _bfd_coff_swap_aux_in, (a,e,t,c,i))
+/*
+FUNCTION
+ bfd_preserve_restore
-#define bfd_coff_swap_sym_in(a,e,i) \
- BFD_SEND (a, _bfd_coff_swap_sym_in, (a,e,i))
+SYNOPSIS
+ void bfd_preserve_restore (bfd *, struct bfd_preserve *);
-#define bfd_coff_swap_lineno_in(a,e,i) \
- BFD_SEND ( a, _bfd_coff_swap_lineno_in, (a,e,i))
-*-
+DESCRIPTION
+ This function restores bfd state saved by bfd_preserve_save.
+ If MARKER is non-NULL in struct bfd_preserve then that block
+ and all subsequently bfd_alloc'd memory is freed.
*/
+void
+bfd_preserve_restore (abfd, preserve)
+ bfd *abfd;
+ struct bfd_preserve *preserve;
+{
+ bfd_hash_table_free (&abfd->section_htab);
+
+ abfd->tdata.any = preserve->tdata;
+ abfd->arch_info = preserve->arch_info;
+ abfd->flags = preserve->flags;
+ abfd->section_htab = preserve->section_htab;
+ abfd->sections = preserve->sections;
+ abfd->section_tail = preserve->section_tail;
+ abfd->section_count = preserve->section_count;
+
+ /* bfd_release frees all memory more recently bfd_alloc'd than
+ its arg, as well as its arg. */
+ if (preserve->marker != NULL)
+ {
+ bfd_release (abfd, preserve->marker);
+ preserve->marker = NULL;
+ }
+}
+/*
+FUNCTION
+ bfd_preserve_finish
+SYNOPSIS
+ void bfd_preserve_finish (bfd *, struct bfd_preserve *);
+DESCRIPTION
+ This function should be called when the bfd state saved by
+ bfd_preserve_save is no longer needed. ie. when the back-end
+ object_p function returns with success.
+*/
+void
+bfd_preserve_finish (abfd, preserve)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ struct bfd_preserve *preserve;
+{
+ /* It would be nice to be able to free more memory here, eg. old
+ tdata, but that's not possible since these blocks are sitting
+ inside bfd_alloc'd memory. The section hash is on a separate
+ objalloc. */
+ bfd_hash_table_free (&preserve->section_htab);
+}
projects / binutils.git / blobdiff