/* Generic BFD library interface and support routines.
- Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1990-2016 Free Software Foundation, Inc.
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.
-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 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 3 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 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. */
+ 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
/*
+INODE
+typedef bfd, Error reporting, BFD front end, BFD front end
+
SECTION
<<typedef bfd>>
CODE_FRAGMENT
.
-.struct _bfd
+.enum bfd_direction
+. {
+. no_direction = 0,
+. read_direction = 1,
+. write_direction = 2,
+. both_direction = 3
+. };
+.
+.enum bfd_plugin_format
+. {
+. bfd_plugin_unknown = 0,
+. bfd_plugin_yes = 1,
+. bfd_plugin_no = 2
+. };
+.
+.struct bfd_build_id
+. {
+. bfd_size_type size;
+. bfd_byte data[1];
+. };
+.
+.struct bfd
.{
-. {* The filename the application opened the BFD with. *}
-. CONST char *filename;
+. {* The filename the application opened the BFD with. *}
+. const char *filename;
+.
+. {* A pointer to the target jump table. *}
+. const struct bfd_target *xvec;
+.
+. {* The IOSTREAM, and corresponding IO vector that provide access
+. to the file backing the BFD. *}
+. void *iostream;
+. const struct bfd_iovec *iovec;
+.
+. {* 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;
+.
+. {* File modified time, if mtime_set is TRUE. *}
+. long mtime;
+.
+. {* A unique identifier of the BFD *}
+. unsigned int id;
+.
+. {* The format which belongs to the BFD. (object, core, etc.) *}
+. ENUM_BITFIELD (bfd_format) format : 3;
+.
+. {* The direction with which the BFD was opened. *}
+. ENUM_BITFIELD (bfd_direction) direction : 2;
+.
+. {* Format_specific flags. *}
+. flagword flags : 20;
+.
+. {* 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
.
-. {* A pointer to the target jump table. *}
-. struct bfd_target *xvec;
+. {* BFD is directly executable. *}
+.#define EXEC_P 0x02
.
-. {* 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. *}
-. char *iostream;
+. {* BFD has line number information (basically used for F_LNNO in a
+. COFF header). *}
+.#define HAS_LINENO 0x04
.
-. {* Is the file descriptor being cached? That is, can it be closed as
-. needed, and re-opened when accessed later? *}
+. {* BFD has debugging information. *}
+.#define HAS_DEBUG 0x08
.
-. boolean cacheable;
+. {* BFD has symbols. *}
+.#define HAS_SYMS 0x10
.
-. {* 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 has local symbols (basically used for F_LSYMS in a COFF
+. header). *}
+.#define HAS_LOCALS 0x20
.
-. boolean target_defaulted;
+. {* BFD is a dynamic object. *}
+.#define DYNAMIC 0x40
.
-. {* The caching routines use these to maintain a
-. least-recently-used list of BFDs *}
+. {* 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
.
-. struct _bfd *lru_prev, *lru_next;
+. {* 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
.
-. {* When a file is closed by the caching routines, BFD retains
-. state information on the file here: *}
+. {* 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
.
-. file_ptr where;
+. {* 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
.
-. {* and here: (``once'' means at least once) *}
+. {* 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
.
-. boolean opened_once;
+. {* This BFD has been created by the linker and doesn't correspond
+. to any input file. *}
+.#define BFD_LINKER_CREATED 0x1000
.
-. {* Set if we have a locally maintained mtime value, rather than
-. getting it from the file each time: *}
+. {* 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 0x2000
.
-. boolean mtime_set;
+. {* Compress sections in this BFD. *}
+.#define BFD_COMPRESS 0x4000
.
-. {* File modified time, if mtime_set is true: *}
+. {* Decompress sections in this BFD. *}
+.#define BFD_DECOMPRESS 0x8000
.
-. long mtime;
+. {* BFD is a dummy, for plugins. *}
+.#define BFD_PLUGIN 0x10000
.
-. {* Reserved for an unimplemented file locking extension.*}
+. {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *}
+.#define BFD_COMPRESS_GABI 0x20000
.
-. int ifd;
+. {* Convert ELF common symbol type to STT_COMMON or STT_OBJECT in this
+. BFD. *}
+.#define BFD_CONVERT_ELF_COMMON 0x40000
.
-. {* The format which belongs to the BFD. (object, core, etc.) *}
+. {* Use the ELF STT_COMMON type in this BFD. *}
+.#define BFD_USE_ELF_STT_COMMON 0x80000
.
-. bfd_format format;
+. {* Flags bits to be saved in bfd_preserve_save. *}
+.#define BFD_FLAGS_SAVED \
+. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_PLUGIN \
+. | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
.
-. {* The direction the BFD was opened with*}
+. {* Flags bits which are for BFD use only. *}
+.#define BFD_FLAGS_FOR_BFD_USE_MASK \
+. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
+. | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
+. | BFD_COMPRESS_GABI | BFD_CONVERT_ELF_COMMON | BFD_USE_ELF_STT_COMMON)
.
-. enum bfd_direction {no_direction = 0,
-. read_direction = 1,
-. write_direction = 2,
-. both_direction = 3} direction;
+. {* Is the file descriptor being cached? That is, can it be closed as
+. needed, and re-opened when accessed later? *}
+. unsigned int cacheable : 1;
.
-. {* Format_specific flags*}
+. {* 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;
.
-. flagword flags;
+. {* ... and here: (``once'' means at least once). *}
+. unsigned int opened_once : 1;
.
-. {* 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. *}
+. {* Set if we have a locally maintained mtime value, rather than
+. getting it from the file each time. *}
+. unsigned int mtime_set : 1;
.
-. file_ptr origin;
+. {* 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. *}
-. boolean output_has_begun;
+. {* Remember when output has begun, to stop strange things
+. from happening. *}
+. unsigned int output_has_begun : 1;
.
-. {* Pointer to linked list of sections*}
-. struct sec *sections;
+. {* Have archive map. *}
+. unsigned int has_armap : 1;
.
-. {* The number of sections *}
-. unsigned int section_count;
+. {* Set if this is a thin archive. *}
+. unsigned int is_thin_archive : 1;
.
-. {* Stuff only useful for object files:
-. The start address. *}
-. bfd_vma start_address;
+. {* Set if only required symbols should be added in the link hash table for
+. this object. Used by VMS linkers. *}
+. unsigned int selective_search : 1;
.
-. {* Used for input and output*}
-. unsigned int symcount;
+. {* Set if this is the linker output BFD. *}
+. unsigned int is_linker_output : 1;
.
-. {* Symbol table for output BFD (with symcount entries) *}
-. struct symbol_cache_entry **outsymbols;
+. {* Set if this is the linker input BFD. *}
+. unsigned int is_linker_input : 1;
.
-. {* Pointer to structure which contains architecture information*}
-. struct bfd_arch_info *arch_info;
+. {* If this is an input for a compiler plug-in library. *}
+. ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
.
-. {* 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. *}
-. boolean has_armap;
+. {* Set if this is a plugin output file. *}
+. unsigned int lto_output : 1;
.
-. {* A chain of BFD structures involved in a link. *}
-. struct _bfd *link_next;
+. {* Set to dummy BFD created when claimed by a compiler plug-in
+. library. *}
+. bfd *plugin_dummy_bfd;
.
-. {* A field used by _bfd_generic_link_add_archive_symbols. This will
-. be used only for archive elements. *}
-. int archive_pass;
+. {* 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;
.
-. {* Used by the back end to hold private data. *}
+. {* The origin in the archive of the proxy entry. This will
+. normally be the same as origin, except for thin archives,
+. 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;
.
-. union
-. {
+. {* A hash table for section names. *}
+. struct bfd_hash_table section_htab;
+.
+. {* Pointer to linked list of sections. *}
+. struct bfd_section *sections;
+.
+. {* The last section on the section list. *}
+. struct bfd_section *section_last;
+.
+. {* The number of sections. *}
+. unsigned int section_count;
+.
+. {* A field used by _bfd_generic_link_add_archive_symbols. This will
+. be used only for archive elements. *}
+. int archive_pass;
+.
+. {* Stuff only useful for object files:
+. The start address. *}
+. bfd_vma start_address;
+.
+. {* Symbol table for output BFD (with symcount entries).
+. Also used by the linker to cache input BFD symbols. *}
+. struct bfd_symbol **outsymbols;
+.
+. {* Used for input and output. *}
+. unsigned int symcount;
+.
+. {* 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. *}
+. void *arelt_data;
+. struct bfd *my_archive; {* The containing archive BFD. *}
+. struct bfd *archive_next; {* The next BFD in the archive. *}
+. struct bfd *archive_head; {* The first BFD in the archive. *}
+. struct bfd *nested_archives; {* List of nested archive in a flattened
+. thin archive. *}
+.
+. union {
+. {* For input BFDs, a chain of BFDs involved in a link. *}
+. struct bfd *next;
+. {* For output BFD, the linker hash table. *}
+. struct bfd_link_hash_table *hash;
+. } link;
+.
+. {* 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 verilog_data_struct *verilog_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 sgi_core_struct *sgi_core_data;
. struct lynx_core_struct *lynx_core_data;
. struct osf_core_struct *osf_core_data;
-. PTR any;
-. } tdata;
-.
-. {* Used by the application to hold private data*}
-. PTR usrdata;
-.
-. {* Where all the allocated stuff under this BFD goes *}
-. struct obstack memory;
+. 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 plugin_data_struct *plugin_data;
+. struct bfd_pef_data_struct *pef_data;
+. struct bfd_pef_xlib_data_struct *pef_xlib_data;
+. struct bfd_sym_data_struct *sym_data;
+. void *any;
+. }
+. tdata;
+.
+. {* Used by the application to hold private data. *}
+. void *usrdata;
+.
+. {* Where all the allocated stuff under this BFD goes. This is a
+. struct objalloc *, but we use void * to avoid requiring the inclusion
+. of objalloc.h. *}
+. void *memory;
+.
+. {* For input BFDs, the build ID, if the object has one. *}
+. const struct bfd_build_id *build_id;
.};
.
+.{* See note beside bfd_set_section_userdata. *}
+.static inline bfd_boolean
+.bfd_set_cacheable (bfd * abfd, bfd_boolean val)
+.{
+. abfd->cacheable = val;
+. return TRUE;
+.}
+.
*/
-#include "bfd.h"
#include "sysdep.h"
+#include <stdarg.h>
+#include "bfd.h"
+#include "bfdver.h"
+#include "libiberty.h"
+#include "demangle.h"
+#include "safe-ctype.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "coff/internal.h"
#include "libcoff.h"
#include "libecoff.h"
#undef obj_symbols
-#include "libelf.h"
-
-#undef strerror
-extern char *strerror();
-
-/** 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;
-
-CONST char *CONST bfd_errmsgs[] = {
- "No error",
- "System call error",
- "Invalid bfd target",
- "File in wrong format",
- "Invalid operation",
- "Memory exhausted",
- "No symbols",
- "No more archived files",
- "Malformed archive",
- "File format not recognized",
- "File format is ambiguous",
- "Section has no contents",
- "Nonrepresentable section on output",
- "Symbol needs debug section which does not exist",
- "Bad value",
- "File truncated",
- "#<Invalid error code>"
- };
-
-CONST char *
-bfd_errmsg (error_tag)
- bfd_ec error_tag;
+#include "elf-bfd.h"
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif
+
+\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
+/*
+INODE
+Error reporting, Miscellaneous, typedef bfd, BFD front end
+
+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_missing_dso,
+. 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_on_input,
+. bfd_error_invalid_error_code
+.}
+.bfd_error_type;
+.
+*/
+
+static bfd_error_type bfd_error = bfd_error_no_error;
+static bfd *input_bfd = NULL;
+static bfd_error_type input_error = bfd_error_no_error;
+
+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_("DSO missing from command line"),
+ 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_("Error reading %s: %s"),
+ 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 (void)
+{
+ return bfd_error;
+}
+
+/*
+FUNCTION
+ bfd_set_error
+
+SYNOPSIS
+ void bfd_set_error (bfd_error_type error_tag, ...);
+
+DESCRIPTION
+ Set the BFD error condition to be @var{error_tag}.
+ If @var{error_tag} is bfd_error_on_input, then this function
+ takes two more parameters, the input bfd where the error
+ occurred, and the bfd_error_type error.
+*/
+
+void
+bfd_set_error (bfd_error_type error_tag, ...)
+{
+ bfd_error = error_tag;
+ if (error_tag == bfd_error_on_input)
+ {
+ /* This is an error that occurred during bfd_close when
+ writing an archive, but on one of the input files. */
+ va_list ap;
+
+ va_start (ap, error_tag);
+ input_bfd = va_arg (ap, bfd *);
+ input_error = (bfd_error_type) va_arg (ap, int);
+ if (input_error >= bfd_error_on_input)
+ abort ();
+ va_end (ap);
+ }
+}
+
+/*
+FUNCTION
+ bfd_errmsg
+
+SYNOPSIS
+ const char *bfd_errmsg (bfd_error_type error_tag);
+
+DESCRIPTION
+ Return a string describing the error @var{error_tag}, or
+ the system error if @var{error_tag} is <<bfd_error_system_call>>.
+*/
+
+const char *
+bfd_errmsg (bfd_error_type error_tag)
{
#ifndef errno
extern int errno;
#endif
- if (error_tag == system_call_error)
- return strerror (errno);
+ if (error_tag == bfd_error_on_input)
+ {
+ char *buf;
+ const char *msg = bfd_errmsg (input_error);
+
+ if (asprintf (&buf, _(bfd_errmsgs [error_tag]), input_bfd->filename, msg)
+ != -1)
+ return buf;
+
+ /* Ick, what to do on out of memory? */
+ return msg;
+ }
+
+ if (error_tag == bfd_error_system_call)
+ return xstrerror (errno);
+
+ if (error_tag > bfd_error_invalid_error_code)
+ error_tag = bfd_error_invalid_error_code; /* sanity check */
+
+ return _(bfd_errmsgs [error_tag]);
+}
+
+/*
+FUNCTION
+ bfd_perror
+
+SYNOPSIS
+ void bfd_perror (const char *message);
+
+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.
+*/
+
+void
+bfd_perror (const char *message)
+{
+ fflush (stdout);
+ 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 ()));
+ fflush (stderr);
+}
+
+/*
+SUBSECTION
+ BFD error handler
+
+ Some BFD functions want to print messages describing the
+ problem. They call a BFD error handler function. This
+ function may be overridden by the program.
+
+ The BFD error handler acts like printf.
+
+CODE_FRAGMENT
+.
+.typedef void (*bfd_error_handler_type) (const char *, ...);
+.
+*/
+
+/* The program name used when printing BFD error messages. */
+
+static const char *_bfd_error_program_name;
+
+/* This is the default routine to handle BFD error messages.
+ Like fprintf (stderr, ...), but also handles some extra format specifiers.
+
+ %A section name from section. For group components, print group name too.
+ %B file name from bfd. For archive components, prints archive too.
+
+ Note - because these two extra format specifiers require special handling
+ they are scanned for and processed in this function, before calling
+ vfprintf. This means that the *arguments* for these format specifiers
+ must be the first ones in the variable argument list, regardless of where
+ the specifiers appear in the format string. Thus for example calling
+ this function with a format string of:
+
+ "blah %s blah %A blah %d blah %B"
+
+ would involve passing the arguments as:
+
+ "blah %s blah %A blah %d blah %B",
+ asection_for_the_%A,
+ bfd_for_the_%B,
+ string_for_the_%s,
+ integer_for_the_%d);
+ */
+
+void
+_bfd_default_error_handler (const char *fmt, ...)
+{
+ va_list ap;
+ char *bufp;
+ const char *new_fmt, *p;
+ size_t avail = 1000;
+ char buf[1000];
+
+ /* PR 4992: Don't interrupt output being sent to stdout. */
+ fflush (stdout);
+
+ if (_bfd_error_program_name != NULL)
+ fprintf (stderr, "%s: ", _bfd_error_program_name);
+ else
+ fprintf (stderr, "BFD: ");
+
+ va_start (ap, fmt);
+ new_fmt = fmt;
+ bufp = buf;
+
+ /* Reserve enough space for the existing format string. */
+ avail -= strlen (fmt) + 1;
+ if (avail > 1000)
+ _exit (EXIT_FAILURE);
+
+ p = fmt;
+ while (1)
+ {
+ char *q;
+ size_t len, extra, trim;
+
+ p = strchr (p, '%');
+ if (p == NULL || p[1] == '\0')
+ {
+ if (new_fmt == buf)
+ {
+ len = strlen (fmt);
+ memcpy (bufp, fmt, len + 1);
+ }
+ break;
+ }
+
+ if (p[1] == 'A' || p[1] == 'B')
+ {
+ len = p - fmt;
+ memcpy (bufp, fmt, len);
+ bufp += len;
+ fmt = p + 2;
+ new_fmt = buf;
+
+ /* If we run out of space, tough, you lose your ridiculously
+ long file or section name. It's not safe to try to alloc
+ memory here; We might be printing an out of memory message. */
+ if (avail == 0)
+ {
+ *bufp++ = '*';
+ *bufp++ = '*';
+ *bufp = '\0';
+ }
+ else
+ {
+ if (p[1] == 'B')
+ {
+ bfd *abfd = va_arg (ap, bfd *);
+
+ if (abfd == NULL)
+ /* Invoking %B with a null bfd pointer is an internal error. */
+ abort ();
+ else if (abfd->my_archive
+ && !bfd_is_thin_archive (abfd->my_archive))
+ snprintf (bufp, avail, "%s(%s)",
+ abfd->my_archive->filename, abfd->filename);
+ else
+ snprintf (bufp, avail, "%s", abfd->filename);
+ }
+ else
+ {
+ asection *sec = va_arg (ap, asection *);
+ bfd *abfd;
+ const char *group = NULL;
+ struct coff_comdat_info *ci;
+
+ if (sec == NULL)
+ /* Invoking %A with a null section pointer is an internal error. */
+ abort ();
+ abfd = sec->owner;
+ if (abfd != NULL
+ && bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && elf_next_in_group (sec) != NULL
+ && (sec->flags & SEC_GROUP) == 0)
+ group = elf_group_name (sec);
+ else if (abfd != NULL
+ && bfd_get_flavour (abfd) == bfd_target_coff_flavour
+ && (ci = bfd_coff_get_comdat_section (sec->owner,
+ sec)) != NULL)
+ group = ci->name;
+ if (group != NULL)
+ snprintf (bufp, avail, "%s[%s]", sec->name, group);
+ else
+ snprintf (bufp, avail, "%s", sec->name);
+ }
+ len = strlen (bufp);
+ avail = avail - len + 2;
+
+ /* We need to replace any '%' we printed by "%%".
+ First count how many. */
+ q = bufp;
+ bufp += len;
+ extra = 0;
+ while ((q = strchr (q, '%')) != NULL)
+ {
+ ++q;
+ ++extra;
+ }
+
+ /* If there isn't room, trim off the end of the string. */
+ q = bufp;
+ bufp += extra;
+ if (extra > avail)
+ {
+ trim = extra - avail;
+ bufp -= trim;
+ do
+ {
+ if (*--q == '%')
+ --extra;
+ }
+ while (--trim != 0);
+ *q = '\0';
+ avail = extra;
+ }
+ avail -= extra;
+
+ /* Now double all '%' chars, shuffling the string as we go. */
+ while (extra != 0)
+ {
+ while ((q[extra] = *q) != '%')
+ --q;
+ q[--extra] = '%';
+ --q;
+ }
+ }
+ }
+ p = p + 2;
+ }
+
+ vfprintf (stderr, new_fmt, ap);
+ va_end (ap);
+
+ /* On AIX, putc is implemented as a macro that triggers a -Wunused-value
+ warning, so use the fputc function to avoid it. */
+ fputc ('\n', stderr);
+ fflush (stderr);
+}
+
+/* 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. */
+
+bfd_error_handler_type _bfd_error_handler = _bfd_default_error_handler;
+
+/*
+FUNCTION
+ bfd_set_error_handler
+
+SYNOPSIS
+ bfd_error_handler_type bfd_set_error_handler (bfd_error_handler_type);
+
+DESCRIPTION
+ Set the BFD error handler function. Returns the previous
+ function.
+*/
- if ((((int)error_tag <(int) no_error) ||
- ((int)error_tag > (int)invalid_error_code)))
- error_tag = invalid_error_code;/* sanity check */
+bfd_error_handler_type
+bfd_set_error_handler (bfd_error_handler_type pnew)
+{
+ bfd_error_handler_type pold;
- return bfd_errmsgs [(int)error_tag];
+ pold = _bfd_error_handler;
+ _bfd_error_handler = pnew;
+ return pold;
}
+/*
+FUNCTION
+ bfd_set_error_program_name
+
+SYNOPSIS
+ void bfd_set_error_program_name (const char *);
+
+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.
+*/
+
void
-DEFUN(bfd_perror,(message),
- CONST char *message)
+bfd_set_error_program_name (const char *name)
+{
+ _bfd_error_program_name = name;
+}
+
+/*
+FUNCTION
+ bfd_get_error_handler
+
+SYNOPSIS
+ bfd_error_handler_type bfd_get_error_handler (void);
+
+DESCRIPTION
+ Return the BFD error handler function.
+*/
+
+bfd_error_handler_type
+bfd_get_error_handler (void)
+{
+ return _bfd_error_handler;
+}
+
+/*
+SUBSECTION
+ BFD assert handler
+
+ If BFD finds an internal inconsistency, the bfd assert
+ handler is called with information on the BFD version, BFD
+ source file and line. If this happens, most programs linked
+ against BFD are expected to want to exit with an error, or mark
+ the current BFD operation as failed, so it is recommended to
+ override the default handler, which just calls
+ _bfd_error_handler and continues.
+
+CODE_FRAGMENT
+.
+.typedef void (*bfd_assert_handler_type) (const char *bfd_formatmsg,
+. const char *bfd_version,
+. const char *bfd_file,
+. int bfd_line);
+.
+*/
+
+/* Note the use of bfd_ prefix on the parameter names above: we want to
+ show which one is the message and which is the version by naming the
+ parameters, but avoid polluting the program-using-bfd namespace as
+ the typedef is visible in the exported headers that the program
+ includes. Below, it's just for consistency. */
+
+static void
+_bfd_default_assert_handler (const char *bfd_formatmsg,
+ const char *bfd_version,
+ const char *bfd_file,
+ int bfd_line)
+
+{
+ (*_bfd_error_handler) (bfd_formatmsg, bfd_version, bfd_file, bfd_line);
+}
+
+/* Similar to _bfd_error_handler, a program can decide to exit on an
+ internal BFD error. We use a non-variadic type to simplify passing
+ on parameters to other functions, e.g. _bfd_error_handler. */
+
+bfd_assert_handler_type _bfd_assert_handler = _bfd_default_assert_handler;
+
+/*
+FUNCTION
+ bfd_set_assert_handler
+
+SYNOPSIS
+ bfd_assert_handler_type bfd_set_assert_handler (bfd_assert_handler_type);
+
+DESCRIPTION
+ Set the BFD assert handler function. Returns the previous
+ function.
+*/
+
+bfd_assert_handler_type
+bfd_set_assert_handler (bfd_assert_handler_type pnew)
+{
+ bfd_assert_handler_type pold;
+
+ pold = _bfd_assert_handler;
+ _bfd_assert_handler = pnew;
+ return pold;
+}
+
+/*
+FUNCTION
+ bfd_get_assert_handler
+
+SYNOPSIS
+ bfd_assert_handler_type bfd_get_assert_handler (void);
+
+DESCRIPTION
+ Return the BFD assert handler function.
+*/
+
+bfd_assert_handler_type
+bfd_get_assert_handler (void)
{
- 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));
- }
+ return _bfd_assert_handler;
}
+\f
+/*
+INODE
+Miscellaneous, Memory Usage, Error reporting, BFD front end
- \f
-/** Symbols */
+SECTION
+ Miscellaneous
+SUBSECTION
+ Miscellaneous functions
+*/
/*
FUNCTION
bfd_get_reloc_upper_bound
SYNOPSIS
- unsigned int bfd_get_reloc_upper_bound(bfd *abfd, asection *sect);
+ long bfd_get_reloc_upper_bound (bfd *abfd, asection *sect);
DESCRIPTION
Return the number of bytes required to store the
relocation information associated with section @var{sect}
- attached to bfd @var{abfd}.
+ attached to bfd @var{abfd}. If an error occurs, return -1.
*/
-
-unsigned int
-DEFUN(bfd_get_reloc_upper_bound,(abfd, asect),
- bfd *abfd AND
- sec_ptr asect)
+long
+bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
{
- if (abfd->format != bfd_object) {
- bfd_error = invalid_operation;
- return 0;
- }
+ if (abfd->format != bfd_object)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return -1;
+ }
return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
}
bfd_canonicalize_reloc
SYNOPSIS
- unsigned int bfd_canonicalize_reloc
- (bfd *abfd,
- asection *sec,
- arelent **loc,
- asymbol **syms);
+ long bfd_canonicalize_reloc
+ (bfd *abfd, asection *sec, arelent **loc, asymbol **syms);
DESCRIPTION
Call the back end associated with the open BFD
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>>.
+ <<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.
-
*/
-unsigned int
-DEFUN(bfd_canonicalize_reloc,(abfd, asect, location, symbols),
- bfd *abfd AND
- sec_ptr asect AND
- arelent **location AND
- asymbol **symbols)
-{
- if (abfd->format != bfd_object) {
- bfd_error = invalid_operation;
- return 0;
- }
+long
+bfd_canonicalize_reloc (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));
}
SYNOPSIS
void bfd_set_reloc
- (bfd *abfd, asection *sec, arelent **rel, unsigned int count)
+ (bfd *abfd, asection *sec, arelent **rel, unsigned int count);
DESCRIPTION
Set the relocation pointer and count within
The argument @var{abfd} is ignored.
*/
-/*ARGSUSED*/
+
void
-bfd_set_reloc (ignore_abfd, asect, location, count)
- bfd *ignore_abfd;
- sec_ptr asect;
- arelent **location;
- unsigned int count;
+bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED,
+ sec_ptr asect,
+ arelent **location,
+ unsigned int count)
{
- asect->orelocation = location;
+ asect->orelocation = location;
asect->reloc_count = count;
}
bfd_set_file_flags
SYNOPSIS
- boolean bfd_set_file_flags(bfd *abfd, flagword flags);
+ bfd_boolean bfd_set_file_flags (bfd *abfd, flagword flags);
DESCRIPTION
Set the flag word in the BFD @var{abfd} to the value @var{flags}.
Possible errors are:
- o <<wrong_format>> - The target bfd was not of object format.
- o <<invalid_operation>> - The target bfd was open for reading.
- o <<invalid_operation>> -
+ 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.
*/
-boolean
-bfd_set_file_flags (abfd, flags)
- bfd *abfd;
- flagword flags;
+bfd_boolean
+bfd_set_file_flags (bfd *abfd, flagword flags)
{
- if (abfd->format != bfd_object) {
- bfd_error = wrong_format;
- return false;
- }
+ if (abfd->format != bfd_object)
+ {
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
+ }
- if (bfd_read_p (abfd)) {
- bfd_error = invalid_operation;
- return false;
- }
+ if (bfd_read_p (abfd))
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
bfd_get_file_flags (abfd) = flags;
- if ((flags & bfd_applicable_file_flags (abfd)) != flags) {
- bfd_error = invalid_operation;
- return false;
- }
+ if ((flags & bfd_applicable_file_flags (abfd)) != flags)
+ {
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
-return true;
+ return TRUE;
}
void
-bfd_assert(file, line)
-char *file;
-int line;
+bfd_assert (const char *file, int line)
{
- fprintf(stderr, "bfd assertion fail %s:%d\n",file,line);
+ (*_bfd_assert_handler) (_("BFD %s assertion fail %s:%d"),
+ BFD_VERSION_STRING, file, line);
}
+/* A more or less friendly abort message. In libbfd.h abort is
+ defined to call this function. */
+
+void
+_bfd_abort (const char *file, int line, const char *fn)
+{
+ if (fn != NULL)
+ (*_bfd_error_handler)
+ (_("BFD %s internal error, aborting at %s:%d in %s\n"),
+ BFD_VERSION_STRING, file, line, fn);
+ else
+ (*_bfd_error_handler)
+ (_("BFD %s internal error, aborting at %s:%d\n"),
+ BFD_VERSION_STRING, file, line);
+ (*_bfd_error_handler) (_("Please report this bug.\n"));
+ _exit (EXIT_FAILURE);
+}
/*
FUNCTION
- bfd_set_start_address
+ bfd_get_arch_size
SYNOPSIS
- boolean bfd_set_start_address(bfd *abfd, bfd_vma vma);
+ int bfd_get_arch_size (bfd *abfd);
DESCRIPTION
- Make @var{vma} the entry point of output BFD @var{abfd}.
+ Returns the normalized architecture address size, in bits, as
+ determined by the object file's format. By normalized, we mean
+ either 32 or 64. For ELF, this information is included in the
+ header. Use bfd_arch_bits_per_address for number of bits in
+ the architecture address.
RETURNS
- Returns <<true>> on success, <<false>> otherwise.
+ Returns the arch size in bits if known, <<-1>> otherwise.
*/
-boolean
-bfd_set_start_address(abfd, vma)
-bfd *abfd;
-bfd_vma vma;
+int
+bfd_get_arch_size (bfd *abfd)
{
- abfd->start_address = vma;
- return true;
-}
+ if (abfd->xvec->flavour == bfd_target_elf_flavour)
+ return get_elf_backend_data (abfd)->s->arch_size;
+ return bfd_arch_bits_per_address (abfd) > 32 ? 64 : 32;
+}
/*
FUNCTION
- bfd_get_mtime
+ bfd_get_sign_extend_vma
SYNOPSIS
- long bfd_get_mtime(bfd *abfd);
+ int bfd_get_sign_extend_vma (bfd *abfd);
DESCRIPTION
- Return the file modification time (as read from the file system, or
- from the archive header for archive members).
+ 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.
*/
-long
-bfd_get_mtime (abfd)
- bfd *abfd;
+int
+bfd_get_sign_extend_vma (bfd *abfd)
{
- FILE *fp;
- struct stat buf;
-
- if (abfd->mtime_set)
- return abfd->mtime;
-
- fp = bfd_cache_lookup (abfd);
- if (0 != fstat (fileno (fp), &buf))
+ char *name;
+
+ 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 & PE COFF.
+ 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 (CONST_STRNEQ (name, "coff-go32")
+ || strcmp (name, "pe-i386") == 0
+ || strcmp (name, "pei-i386") == 0
+ || strcmp (name, "pe-x86-64") == 0
+ || strcmp (name, "pei-x86-64") == 0
+ || strcmp (name, "pe-arm-wince-little") == 0
+ || strcmp (name, "pei-arm-wince-little") == 0
+ || strcmp (name, "aixcoff-rs6000") == 0)
+ return 1;
+
+ if (CONST_STRNEQ (name, "mach-o"))
return 0;
- abfd->mtime = buf.st_mtime; /* Save value in case anyone wants it */
- return buf.st_mtime;
+ bfd_set_error (bfd_error_wrong_format);
+ return -1;
}
/*
FUNCTION
- bfd_get_size
+ bfd_set_start_address
SYNOPSIS
- long bfd_get_size(bfd *abfd);
+ bfd_boolean bfd_set_start_address (bfd *abfd, bfd_vma vma);
DESCRIPTION
- Return the file size (as read from file system) for the file
- associated with BFD @var{abfd}.
-
- The initial motivation for, and use of, this routine is not
- so we can get the exact size of the object the BFD applies to, since
- that might not be generally possible (archive members for example).
- It would be ideal if someone could eventually modify
- it so that such results were guaranteed.
+ Make @var{vma} the entry point of output BFD @var{abfd}.
- Instead, we want to ask questions like "is this NNN byte sized
- object I'm about to try read from file offset YYY reasonable?"
- As as example of where we might do this, some object formats
- use string tables for which the first <<sizeof(long)>> bytes of the
- table contain the size of the table itself, including the size bytes.
- If an application tries to read what it thinks is one of these
- string tables, without some way to validate the size, and for
- some reason the size is wrong (byte swapping error, wrong location
- for the string table, etc.), the only clue is likely to be a read
- error when it tries to read the table, or a "virtual memory
- exhausted" error when it tries to allocate 15 bazillon bytes
- of space for the 15 bazillon byte table it is about to read.
- This function at least allows us to answer the quesion, "is the
- size reasonable?".
+RETURNS
+ Returns <<TRUE>> on success, <<FALSE>> otherwise.
*/
-long
-bfd_get_size (abfd)
- bfd *abfd;
+bfd_boolean
+bfd_set_start_address (bfd *abfd, bfd_vma vma)
{
- FILE *fp;
- struct stat buf;
-
- fp = bfd_cache_lookup (abfd);
- if (0 != fstat (fileno (fp), &buf))
- return 0;
-
- return buf.st_size;
+ abfd->start_address = vma;
+ return TRUE;
}
/*
bfd_get_gp_size
SYNOPSIS
- int bfd_get_gp_size(bfd *abfd);
+ unsigned int bfd_get_gp_size (bfd *abfd);
DESCRIPTION
Return the maximum size of objects to be optimized using the GP
argument to the compiler, assembler or linker.
*/
-int
-bfd_get_gp_size (abfd)
- bfd *abfd;
+unsigned int
+bfd_get_gp_size (bfd *abfd)
{
- 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);
+ 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;
}
bfd_set_gp_size
SYNOPSIS
- void bfd_set_gp_size(bfd *abfd, int i);
+ void bfd_set_gp_size (bfd *abfd, unsigned int i);
DESCRIPTION
Set the maximum size of objects to be optimized using the GP
*/
void
-bfd_set_gp_size (abfd, i)
- bfd *abfd;
- int i;
+bfd_set_gp_size (bfd *abfd, unsigned int i)
{
+ /* 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;
}
+/* 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 (bfd *abfd)
+{
+ if (! abfd)
+ return 0;
+ 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. */
+
+void
+_bfd_set_gp_value (bfd *abfd, bfd_vma v)
+{
+ if (! abfd)
+ abort ();
+ if (abfd->format != bfd_object)
+ return;
+
+ 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;
+}
+
/*
FUNCTION
bfd_scan_vma
SYNOPSIS
- bfd_vma bfd_scan_vma(CONST char *string, CONST char **end, int base);
+ bfd_vma bfd_scan_vma (const char *string, const char **end, int base);
DESCRIPTION
Convert, like <<strtoul>>, a numerical expression
in hex if a leading "0x" or "0X" is found, otherwise
in octal if a leading zero is found, otherwise in decimal.
- Overflow is not detected.
+ If the value would overflow, the maximum <<bfd_vma>> value is
+ returned.
*/
bfd_vma
-DEFUN(bfd_scan_vma,(string, end, base),
- CONST char *string AND
- CONST char **end AND
- int base)
+bfd_scan_vma (const char *string, const char **end, int base)
{
bfd_vma value;
- int digit;
+ 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, 0, base);
+ if (sizeof (bfd_vma) <= sizeof (unsigned long))
+ return strtoul (string, (char **) end, base);
- /* A negative base makes no sense, and we only need to go as high as hex. */
- if ((base < 0) || (base > 16))
- return (bfd_vma) 0;
+#ifdef HAVE_STRTOULL
+ if (sizeof (bfd_vma) <= sizeof (unsigned long long))
+ return strtoull (string, (char **) end, base);
+#endif
if (base == 0)
{
{
if ((string[1] == 'x') || (string[1] == 'X'))
base = 16;
- /* XXX should we also allow "0b" or "0B" to set base to 2? */
else
base = 8;
}
- else
- base = 10;
}
- if ((base == 16) &&
- (string[0] == '0') && ((string[1] == 'x') || (string[1] == 'X')))
- string += 2;
- /* XXX should we also skip over "0b" or "0B" if base is 2? */
-
-/* Speed could be improved with a table like hex_value[] in gas. */
-#define HEX_VALUE(c) \
- (isxdigit(c) ? \
- (isdigit(c) ? \
- (c - '0') : \
- (10 + c - (islower(c) ? 'a' : 'A'))) : \
- 42)
-
- for (value = 0; (digit = HEX_VALUE(*string)) < base; string++)
+
+ 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 (end)
+ if (overflow)
+ value = ~ (bfd_vma) 0;
+
+ if (end != NULL)
*end = string;
return value;
/*
FUNCTION
- stuff
+ bfd_copy_private_header_data
+
+SYNOPSIS
+ bfd_boolean bfd_copy_private_header_data (bfd *ibfd, bfd *obfd);
+
+DESCRIPTION
+ Copy private BFD header information from the BFD @var{ibfd} to the
+ the BFD @var{obfd}. This copies information that may require
+ sections to exist, but does not require symbol tables. 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_copy_private_header_data(ibfd, obfd) \
+. BFD_SEND (obfd, _bfd_copy_private_header_data, \
+. (ibfd, obfd))
+
+*/
+
+/*
+FUNCTION
+ bfd_copy_private_bfd_data
+
+SYNOPSIS
+ bfd_boolean bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd);
+
+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:
+
+ 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))
+
+*/
+
+/*
+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
- Stuff which should be documented:
+ 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_sizeof_headers(abfd, info) \
+. BFD_SEND (abfd, _bfd_sizeof_headers, (abfd, info))
.
.#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))
+. BFD_SEND (abfd, _bfd_find_nearest_line, \
+. (abfd, syms, sec, off, file, func, line, NULL))
+.
+.#define bfd_find_nearest_line_discriminator(abfd, sec, syms, off, file, func, \
+. line, disc) \
+. BFD_SEND (abfd, _bfd_find_nearest_line, \
+. (abfd, syms, sec, off, file, func, line, disc))
+.
+.#define bfd_find_line(abfd, syms, sym, file, line) \
+. BFD_SEND (abfd, _bfd_find_line, \
+. (abfd, syms, sym, file, line))
+.
+.#define bfd_find_inliner_info(abfd, file, func, line) \
+. BFD_SEND (abfd, _bfd_find_inliner_info, \
+. (abfd, file, func, line))
.
-. {* Do these three do anything useful at all, for any back end? *}
.#define bfd_debug_info_start(abfd) \
-. BFD_SEND (abfd, _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))
+. BFD_SEND (abfd, _bfd_debug_info_end, (abfd))
.
.#define bfd_debug_info_accumulate(abfd, section) \
-. BFD_SEND (abfd, _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_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))
+. 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_get_relocated_section_contents(abfd, link_info, link_order, data, relocateable, symbols) \
-. BFD_SEND (abfd, _bfd_get_relocated_section_contents, \
-. (abfd, link_info, link_order, data, relocateable, symbols))
-.
-.#define bfd_relax_section(abfd, section, link_info, symbols) \
-. BFD_SEND (abfd, _bfd_relax_section, \
-. (abfd, section, link_info, symbols))
+.#define bfd_lookup_section_flags(link_info, flag_info, section) \
+. BFD_SEND (abfd, _bfd_lookup_section_flags, (link_info, flag_info, section))
+.
+.#define bfd_merge_sections(abfd, link_info) \
+. BFD_SEND (abfd, _bfd_merge_sections, (abfd, link_info))
+.
+.#define bfd_is_group_section(abfd, sec) \
+. BFD_SEND (abfd, _bfd_is_group_section, (abfd, sec))
+.
+.#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_add_symbols(abfd, info) \
. BFD_SEND (abfd, _bfd_link_add_symbols, (abfd, info))
.
+.#define bfd_link_just_syms(abfd, 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_synthetic_symtab(abfd, count, syms, dyncount, dynsyms, ret) \
+. BFD_SEND (abfd, _bfd_get_synthetic_symtab, (abfd, count, syms, \
+. dyncount, dynsyms, ret))
+.
+.#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
+. (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
+. bfd_boolean, asymbol **);
+.
+
+*/
+
+bfd_byte *
+bfd_get_relocated_section_contents (bfd *abfd,
+ struct bfd_link_info *link_info,
+ struct bfd_link_order *link_order,
+ bfd_byte *data,
+ bfd_boolean relocatable,
+ asymbol **symbols)
+{
+ bfd *abfd2;
+ bfd_byte *(*fn) (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, relocatable, symbols);
+}
+
+/* Record information about an ELF program header. */
+
+bfd_boolean
+bfd_record_phdr (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_zalloc (abfd, amt);
+ if (m == NULL)
+ return FALSE;
+
+ m->p_type = type;
+ m->p_flags = flags;
+ m->p_paddr = at;
+ m->p_flags_valid = flags_valid;
+ m->p_paddr_valid = at_valid;
+ m->includes_filehdr = includes_filehdr;
+ m->includes_phdrs = includes_phdrs;
+ m->count = count;
+ if (count > 0)
+ memcpy (m->sections, secs, count * sizeof (asection *));
+
+ for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next)
+ ;
+ *pm = m;
+
+ return TRUE;
+}
+
+#ifdef BFD64
+/* Return true iff this target is 32-bit. */
+
+static bfd_boolean
+is32bit (bfd *abfd)
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ {
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ return bed->s->elfclass == ELFCLASS32;
+ }
+
+ /* For non-ELF targets, use architecture information. */
+ return bfd_arch_bits_per_address (abfd) <= 32;
+}
+#endif
+
+/* bfd_sprintf_vma and bfd_fprintf_vma display an address in the
+ target's address size. */
+
+void
+bfd_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value)
+{
+#ifdef BFD64
+ if (is32bit (abfd))
+ {
+ sprintf (buf, "%08lx", (unsigned long) value & 0xffffffff);
+ return;
+ }
+#endif
+ sprintf_vma (buf, value);
+}
+
+void
+bfd_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value)
+{
+#ifdef BFD64
+ if (is32bit (abfd))
+ {
+ fprintf ((FILE *) stream, "%08lx", (unsigned long) value & 0xffffffff);
+ return;
+ }
+#endif
+ 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 (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;
+}
+
+/*
+FUNCTION
+ bfd_emul_get_maxpagesize
+
+SYNOPSIS
+ bfd_vma bfd_emul_get_maxpagesize (const char *);
+
+DESCRIPTION
+ Returns the maximum page size, in bytes, as determined by
+ emulation.
+
+RETURNS
+ Returns the maximum page size in bytes for ELF, 0 otherwise.
+*/
+
+bfd_vma
+bfd_emul_get_maxpagesize (const char *emul)
+{
+ const bfd_target *target;
+
+ target = bfd_find_target (emul, NULL);
+ if (target != NULL
+ && target->flavour == bfd_target_elf_flavour)
+ return xvec_get_elf_backend_data (target)->maxpagesize;
+
+ return 0;
+}
+
+static void
+bfd_elf_set_pagesize (const bfd_target *target, bfd_vma size,
+ int offset, const bfd_target *orig_target)
+{
+ if (target->flavour == bfd_target_elf_flavour)
+ {
+ const struct elf_backend_data *bed;
+
+ bed = xvec_get_elf_backend_data (target);
+ *((bfd_vma *) ((char *) bed + offset)) = size;
+ }
+
+ if (target->alternative_target
+ && target->alternative_target != orig_target)
+ bfd_elf_set_pagesize (target->alternative_target, size, offset,
+ orig_target);
+}
+
+/*
+FUNCTION
+ bfd_emul_set_maxpagesize
+
+SYNOPSIS
+ void bfd_emul_set_maxpagesize (const char *, bfd_vma);
+
+DESCRIPTION
+ For ELF, set the maximum page size for the emulation. It is
+ a no-op for other formats.
+
+*/
+
+void
+bfd_emul_set_maxpagesize (const char *emul, bfd_vma size)
+{
+ const bfd_target *target;
+
+ target = bfd_find_target (emul, NULL);
+ if (target)
+ bfd_elf_set_pagesize (target, size,
+ offsetof (struct elf_backend_data,
+ maxpagesize), target);
+}
+
+/*
+FUNCTION
+ bfd_emul_get_commonpagesize
+
+SYNOPSIS
+ bfd_vma bfd_emul_get_commonpagesize (const char *);
+
+DESCRIPTION
+ Returns the common page size, in bytes, as determined by
+ emulation.
+
+RETURNS
+ Returns the common page size in bytes for ELF, 0 otherwise.
+*/
+
+bfd_vma
+bfd_emul_get_commonpagesize (const char *emul)
+{
+ const bfd_target *target;
+
+ target = bfd_find_target (emul, NULL);
+ if (target != NULL
+ && target->flavour == bfd_target_elf_flavour)
+ return xvec_get_elf_backend_data (target)->commonpagesize;
+
+ return 0;
+}
+
+/*
+FUNCTION
+ bfd_emul_set_commonpagesize
+
+SYNOPSIS
+ void bfd_emul_set_commonpagesize (const char *, bfd_vma);
+
+DESCRIPTION
+ For ELF, set the common page size for the emulation. It is
+ a no-op for other formats.
+
+*/
+
+void
+bfd_emul_set_commonpagesize (const char *emul, bfd_vma size)
+{
+ const bfd_target *target;
+
+ target = bfd_find_target (emul, NULL);
+ if (target)
+ bfd_elf_set_pagesize (target, size,
+ offsetof (struct elf_backend_data,
+ commonpagesize), target);
+}
+
+/*
+FUNCTION
+ bfd_demangle
+
+SYNOPSIS
+ char *bfd_demangle (bfd *, const char *, int);
+
+DESCRIPTION
+ Wrapper around cplus_demangle. Strips leading underscores and
+ other such chars that would otherwise confuse the demangler.
+ If passed a g++ v3 ABI mangled name, returns a buffer allocated
+ with malloc holding the demangled name. Returns NULL otherwise
+ and on memory alloc failure.
+*/
+
+char *
+bfd_demangle (bfd *abfd, const char *name, int options)
+{
+ char *res, *alloc;
+ const char *pre, *suf;
+ size_t pre_len;
+ bfd_boolean skip_lead;
+
+ skip_lead = (abfd != NULL
+ && *name != '\0'
+ && bfd_get_symbol_leading_char (abfd) == *name);
+ if (skip_lead)
+ ++name;
+
+ /* 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
+ on at least some symbols, so we remove all dots to avoid
+ confusing the demangler. */
+ pre = name;
+ while (*name == '.' || *name == '$')
+ ++name;
+ pre_len = name - pre;
+
+ /* Strip off @plt and suchlike too. */
+ alloc = NULL;
+ suf = strchr (name, '@');
+ if (suf != NULL)
+ {
+ alloc = (char *) bfd_malloc (suf - name + 1);
+ if (alloc == NULL)
+ return NULL;
+ memcpy (alloc, name, suf - name);
+ alloc[suf - name] = '\0';
+ name = alloc;
+ }
+
+ res = cplus_demangle (name, options);
+
+ if (alloc != NULL)
+ free (alloc);
+
+ if (res == NULL)
+ {
+ if (skip_lead)
+ {
+ size_t len = strlen (pre) + 1;
+ alloc = (char *) bfd_malloc (len);
+ if (alloc == NULL)
+ return NULL;
+ memcpy (alloc, pre, len);
+ return alloc;
+ }
+ return NULL;
+ }
+
+ /* Put back any prefix or suffix. */
+ if (pre_len != 0 || suf != NULL)
+ {
+ size_t len;
+ size_t suf_len;
+ char *final;
+
+ len = strlen (res);
+ if (suf == NULL)
+ suf = res + len;
+ suf_len = strlen (suf) + 1;
+ final = (char *) bfd_malloc (pre_len + len + suf_len);
+ if (final != NULL)
+ {
+ memcpy (final, pre, pre_len);
+ memcpy (final + pre_len, res, len);
+ memcpy (final + pre_len + len, suf, suf_len);
+ }
+ free (res);
+ res = final;
+ }
+
+ return res;
+}
+
+/*
+FUNCTION
+ bfd_update_compression_header
+
+SYNOPSIS
+ void bfd_update_compression_header
+ (bfd *abfd, bfd_byte *contents, asection *sec);
+DESCRIPTION
+ Set the compression header at CONTENTS of SEC in ABFD and update
+ elf_section_flags for compression.
*/
+
+void
+bfd_update_compression_header (bfd *abfd, bfd_byte *contents,
+ asection *sec)
+{
+ if ((abfd->flags & BFD_COMPRESS) != 0)
+ {
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ {
+ if ((abfd->flags & BFD_COMPRESS_GABI) != 0)
+ {
+ const struct elf_backend_data *bed
+ = get_elf_backend_data (abfd);
+
+ /* Set the SHF_COMPRESSED bit. */
+ elf_section_flags (sec) |= SHF_COMPRESSED;
+
+ if (bed->s->elfclass == ELFCLASS32)
+ {
+ Elf32_External_Chdr *echdr
+ = (Elf32_External_Chdr *) contents;
+ bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
+ bfd_put_32 (abfd, sec->size, &echdr->ch_size);
+ bfd_put_32 (abfd, 1 << sec->alignment_power,
+ &echdr->ch_addralign);
+ }
+ else
+ {
+ Elf64_External_Chdr *echdr
+ = (Elf64_External_Chdr *) contents;
+ bfd_put_32 (abfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
+ bfd_put_32 (abfd, 0, &echdr->ch_reserved);
+ bfd_put_64 (abfd, sec->size, &echdr->ch_size);
+ bfd_put_64 (abfd, 1 << sec->alignment_power,
+ &echdr->ch_addralign);
+ }
+ }
+ else
+ {
+ /* Clear the SHF_COMPRESSED bit. */
+ elf_section_flags (sec) &= ~SHF_COMPRESSED;
+
+ /* Write the zlib header. It should be "ZLIB" followed by
+ the uncompressed section size, 8 bytes in big-endian
+ order. */
+ memcpy (contents, "ZLIB", 4);
+ bfd_putb64 (sec->size, contents + 4);
+ }
+ }
+ }
+ else
+ abort ();
+}
+
+/*
+ FUNCTION
+ bfd_check_compression_header
+
+ SYNOPSIS
+ bfd_boolean bfd_check_compression_header
+ (bfd *abfd, bfd_byte *contents, asection *sec,
+ bfd_size_type *uncompressed_size);
+
+DESCRIPTION
+ Check the compression header at CONTENTS of SEC in ABFD and
+ store the uncompressed size in UNCOMPRESSED_SIZE if the
+ compression header is valid.
+
+RETURNS
+ Return TRUE if the compression header is valid.
+*/
+
+bfd_boolean
+bfd_check_compression_header (bfd *abfd, bfd_byte *contents,
+ asection *sec,
+ bfd_size_type *uncompressed_size)
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && (elf_section_flags (sec) & SHF_COMPRESSED) != 0)
+ {
+ Elf_Internal_Chdr chdr;
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ if (bed->s->elfclass == ELFCLASS32)
+ {
+ Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
+ chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
+ chdr.ch_size = bfd_get_32 (abfd, &echdr->ch_size);
+ chdr.ch_addralign = bfd_get_32 (abfd, &echdr->ch_addralign);
+ }
+ else
+ {
+ Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
+ chdr.ch_type = bfd_get_32 (abfd, &echdr->ch_type);
+ chdr.ch_size = bfd_get_64 (abfd, &echdr->ch_size);
+ chdr.ch_addralign = bfd_get_64 (abfd, &echdr->ch_addralign);
+ }
+ if (chdr.ch_type == ELFCOMPRESS_ZLIB
+ && chdr.ch_addralign == 1U << sec->alignment_power)
+ {
+ *uncompressed_size = chdr.ch_size;
+ return TRUE;
+ }
+ }
+
+ return FALSE;
+}
+
+/*
+FUNCTION
+ bfd_get_compression_header_size
+
+SYNOPSIS
+ int bfd_get_compression_header_size (bfd *abfd, asection *sec);
+
+DESCRIPTION
+ Return the size of the compression header of SEC in ABFD.
+
+RETURNS
+ Return the size of the compression header in bytes.
+*/
+
+int
+bfd_get_compression_header_size (bfd *abfd, asection *sec)
+{
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
+ {
+ if (sec == NULL)
+ {
+ if (!(abfd->flags & BFD_COMPRESS_GABI))
+ return 0;
+ }
+ else if (!(elf_section_flags (sec) & SHF_COMPRESSED))
+ return 0;
+
+ if (get_elf_backend_data (abfd)->s->elfclass == ELFCLASS32)
+ return sizeof (Elf32_External_Chdr);
+ else
+ return sizeof (Elf64_External_Chdr);
+ }
+
+ return 0;
+}
+
+/*
+FUNCTION
+ bfd_convert_section_size
+
+SYNOPSIS
+ bfd_size_type bfd_convert_section_size
+ (bfd *ibfd, asection *isec, bfd *obfd, bfd_size_type size);
+
+DESCRIPTION
+ Convert the size @var{size} of the section @var{isec} in input
+ BFD @var{ibfd} to the section size in output BFD @var{obfd}.
+*/
+
+bfd_size_type
+bfd_convert_section_size (bfd *ibfd, sec_ptr isec, bfd *obfd,
+ bfd_size_type size)
+{
+ bfd_size_type hdr_size;
+
+ /* Do nothing if input file will be decompressed. */
+ if ((ibfd->flags & BFD_DECOMPRESS))
+ return size;
+
+ /* Do nothing if either input or output aren't ELF. */
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return size;
+
+ /* Do nothing if ELF classes of input and output are the same. */
+ if (get_elf_backend_data (ibfd)->s->elfclass
+ == get_elf_backend_data (obfd)->s->elfclass)
+ return size;
+
+ /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
+ hdr_size = bfd_get_compression_header_size (ibfd, isec);
+ if (hdr_size == 0)
+ return size;
+
+ /* Adjust the size of the output SHF_COMPRESSED section. */
+ if (hdr_size == sizeof (Elf32_External_Chdr))
+ return (size - sizeof (Elf32_External_Chdr)
+ + sizeof (Elf64_External_Chdr));
+ else
+ return (size - sizeof (Elf64_External_Chdr)
+ + sizeof (Elf32_External_Chdr));
+}
+
+/*
+FUNCTION
+ bfd_convert_section_contents
+
+SYNOPSIS
+ bfd_boolean bfd_convert_section_contents
+ (bfd *ibfd, asection *isec, bfd *obfd,
+ bfd_byte **ptr, bfd_size_type *ptr_size);
+
+DESCRIPTION
+ Convert the contents, stored in @var{*ptr}, of the section
+ @var{isec} in input BFD @var{ibfd} to output BFD @var{obfd}
+ if needed. The original buffer pointed to by @var{*ptr} may
+ be freed and @var{*ptr} is returned with memory malloc'd by this
+ function, and the new size written to @var{ptr_size}.
+*/
+
+bfd_boolean
+bfd_convert_section_contents (bfd *ibfd, sec_ptr isec, bfd *obfd,
+ bfd_byte **ptr, bfd_size_type *ptr_size)
+{
+ bfd_byte *contents;
+ bfd_size_type ihdr_size, ohdr_size, size;
+ Elf_Internal_Chdr chdr;
+ bfd_boolean use_memmove;
+
+ /* Do nothing if input file will be decompressed. */
+ if ((ibfd->flags & BFD_DECOMPRESS))
+ return TRUE;
+
+ /* Do nothing if either input or output aren't ELF. */
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ /* Do nothing if ELF classes of input and output are the same. */
+ if (get_elf_backend_data (ibfd)->s->elfclass
+ == get_elf_backend_data (obfd)->s->elfclass)
+ return TRUE;
+
+ /* Do nothing if the input section isn't a SHF_COMPRESSED section. */
+ ihdr_size = bfd_get_compression_header_size (ibfd, isec);
+ if (ihdr_size == 0)
+ return TRUE;
+
+ contents = *ptr;
+
+ /* Convert the contents of the input SHF_COMPRESSED section to
+ output. Get the input compression header and the size of the
+ output compression header. */
+ if (ihdr_size == sizeof (Elf32_External_Chdr))
+ {
+ Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
+ chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
+ chdr.ch_size = bfd_get_32 (ibfd, &echdr->ch_size);
+ chdr.ch_addralign = bfd_get_32 (ibfd, &echdr->ch_addralign);
+
+ ohdr_size = sizeof (Elf64_External_Chdr);
+
+ use_memmove = FALSE;
+ }
+ else
+ {
+ Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
+ chdr.ch_type = bfd_get_32 (ibfd, &echdr->ch_type);
+ chdr.ch_size = bfd_get_64 (ibfd, &echdr->ch_size);
+ chdr.ch_addralign = bfd_get_64 (ibfd, &echdr->ch_addralign);
+
+ ohdr_size = sizeof (Elf32_External_Chdr);
+ use_memmove = TRUE;
+ }
+
+ size = bfd_get_section_size (isec) - ihdr_size + ohdr_size;
+ if (!use_memmove)
+ {
+ contents = (bfd_byte *) bfd_malloc (size);
+ if (contents == NULL)
+ return FALSE;
+ }
+
+ /* Write out the output compression header. */
+ if (ohdr_size == sizeof (Elf32_External_Chdr))
+ {
+ Elf32_External_Chdr *echdr = (Elf32_External_Chdr *) contents;
+ bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
+ bfd_put_32 (obfd, chdr.ch_size, &echdr->ch_size);
+ bfd_put_32 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
+ }
+ else
+ {
+ Elf64_External_Chdr *echdr = (Elf64_External_Chdr *) contents;
+ bfd_put_32 (obfd, ELFCOMPRESS_ZLIB, &echdr->ch_type);
+ bfd_put_32 (obfd, 0, &echdr->ch_reserved);
+ bfd_put_64 (obfd, chdr.ch_size, &echdr->ch_size);
+ bfd_put_64 (obfd, chdr.ch_addralign, &echdr->ch_addralign);
+ }
+
+ /* Copy the compressed contents. */
+ if (use_memmove)
+ memmove (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);
+ else
+ {
+ memcpy (contents + ohdr_size, *ptr + ihdr_size, size - ohdr_size);
+ free (*ptr);
+ *ptr = contents;
+ }
+
+ *ptr_size = size;
+ return TRUE;
+}
projects / deliverable / binutils-gdb.git / blobdiff