2273 lines
58 KiB
C
2273 lines
58 KiB
C
/* Generic BFD library interface and support routines.
|
||
Copyright (C) 1990-2015 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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||
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/*
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INODE
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typedef bfd, Error reporting, BFD front end, BFD front end
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SECTION
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<<typedef bfd>>
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A BFD has type <<bfd>>; objects of this type are the
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cornerstone of any application using BFD. Using BFD
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consists of making references though the BFD and to data in the BFD.
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Here is the structure that defines the type <<bfd>>. It
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contains the major data about the file and pointers
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to the rest of the data.
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CODE_FRAGMENT
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.
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.enum bfd_direction
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. {
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. no_direction = 0,
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. read_direction = 1,
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. write_direction = 2,
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. both_direction = 3
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. };
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.
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.enum bfd_plugin_format
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. {
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. bfd_plugin_uknown = 0,
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. bfd_plugin_yes = 1,
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. bfd_plugin_no = 2
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. };
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.
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.struct bfd_build_id
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. {
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. bfd_size_type size;
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. bfd_byte data[1];
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. };
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.
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.struct bfd
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.{
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. {* The filename the application opened the BFD with. *}
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. const char *filename;
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.
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. {* A pointer to the target jump table. *}
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. const struct bfd_target *xvec;
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.
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. {* The IOSTREAM, and corresponding IO vector that provide access
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. to the file backing the BFD. *}
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. void *iostream;
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. const struct bfd_iovec *iovec;
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.
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. {* The caching routines use these to maintain a
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. least-recently-used list of BFDs. *}
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. struct bfd *lru_prev, *lru_next;
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.
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. {* When a file is closed by the caching routines, BFD retains
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. state information on the file here... *}
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. ufile_ptr where;
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.
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. {* File modified time, if mtime_set is TRUE. *}
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. long mtime;
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.
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. {* A unique identifier of the BFD *}
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. unsigned int id;
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.
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. {* The format which belongs to the BFD. (object, core, etc.) *}
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. ENUM_BITFIELD (bfd_format) format : 3;
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.
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. {* The direction with which the BFD was opened. *}
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. ENUM_BITFIELD (bfd_direction) direction : 2;
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.
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. {* Format_specific flags. *}
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. flagword flags : 18;
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.
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. {* Values that may appear in the flags field of a BFD. These also
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. appear in the object_flags field of the bfd_target structure, where
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. they indicate the set of flags used by that backend (not all flags
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. are meaningful for all object file formats) (FIXME: at the moment,
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. the object_flags values have mostly just been copied from backend
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. to another, and are not necessarily correct). *}
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.
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.#define BFD_NO_FLAGS 0x00
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.
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. {* BFD contains relocation entries. *}
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.#define HAS_RELOC 0x01
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.
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. {* BFD is directly executable. *}
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.#define EXEC_P 0x02
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.
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. {* BFD has line number information (basically used for F_LNNO in a
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. COFF header). *}
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.#define HAS_LINENO 0x04
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.
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. {* BFD has debugging information. *}
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.#define HAS_DEBUG 0x08
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.
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. {* BFD has symbols. *}
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.#define HAS_SYMS 0x10
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.
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. {* BFD has local symbols (basically used for F_LSYMS in a COFF
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. header). *}
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.#define HAS_LOCALS 0x20
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.
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. {* BFD is a dynamic object. *}
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.#define DYNAMIC 0x40
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.
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. {* Text section is write protected (if D_PAGED is not set, this is
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. like an a.out NMAGIC file) (the linker sets this by default, but
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. clears it for -r or -N). *}
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.#define WP_TEXT 0x80
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.
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. {* BFD is dynamically paged (this is like an a.out ZMAGIC file) (the
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. linker sets this by default, but clears it for -r or -n or -N). *}
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.#define D_PAGED 0x100
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.
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. {* BFD is relaxable (this means that bfd_relax_section may be able to
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. do something) (sometimes bfd_relax_section can do something even if
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. this is not set). *}
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.#define BFD_IS_RELAXABLE 0x200
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.
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. {* This may be set before writing out a BFD to request using a
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. traditional format. For example, this is used to request that when
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. writing out an a.out object the symbols not be hashed to eliminate
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. duplicates. *}
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.#define BFD_TRADITIONAL_FORMAT 0x400
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.
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. {* This flag indicates that the BFD contents are actually cached
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. in memory. If this is set, iostream points to a bfd_in_memory
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. struct. *}
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.#define BFD_IN_MEMORY 0x800
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.
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. {* This BFD has been created by the linker and doesn't correspond
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. to any input file. *}
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.#define BFD_LINKER_CREATED 0x1000
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.
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. {* This may be set before writing out a BFD to request that it
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. be written using values for UIDs, GIDs, timestamps, etc. that
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. will be consistent from run to run. *}
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.#define BFD_DETERMINISTIC_OUTPUT 0x2000
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.
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. {* Compress sections in this BFD. *}
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.#define BFD_COMPRESS 0x4000
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.
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. {* Decompress sections in this BFD. *}
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.#define BFD_DECOMPRESS 0x8000
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.
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. {* BFD is a dummy, for plugins. *}
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.#define BFD_PLUGIN 0x10000
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.
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. {* Compress sections in this BFD with SHF_COMPRESSED from gABI. *}
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.#define BFD_COMPRESS_GABI 0x20000
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.
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. {* Flags bits to be saved in bfd_preserve_save. *}
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.#define BFD_FLAGS_SAVED \
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. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_PLUGIN \
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. | BFD_COMPRESS_GABI)
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.
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. {* Flags bits which are for BFD use only. *}
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.#define BFD_FLAGS_FOR_BFD_USE_MASK \
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. (BFD_IN_MEMORY | BFD_COMPRESS | BFD_DECOMPRESS | BFD_LINKER_CREATED \
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. | BFD_PLUGIN | BFD_TRADITIONAL_FORMAT | BFD_DETERMINISTIC_OUTPUT \
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. | BFD_COMPRESS_GABI)
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.
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. {* Is the file descriptor being cached? That is, can it be closed as
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. needed, and re-opened when accessed later? *}
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. unsigned int cacheable : 1;
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.
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. {* Marks whether there was a default target specified when the
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. BFD was opened. This is used to select which matching algorithm
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. to use to choose the back end. *}
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. unsigned int target_defaulted : 1;
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.
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. {* ... and here: (``once'' means at least once). *}
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. unsigned int opened_once : 1;
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.
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. {* Set if we have a locally maintained mtime value, rather than
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. getting it from the file each time. *}
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. unsigned int mtime_set : 1;
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.
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. {* Flag set if symbols from this BFD should not be exported. *}
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. unsigned int no_export : 1;
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.
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. {* Remember when output has begun, to stop strange things
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. from happening. *}
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. unsigned int output_has_begun : 1;
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.
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. {* Have archive map. *}
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. unsigned int has_armap : 1;
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.
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. {* Set if this is a thin archive. *}
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. unsigned int is_thin_archive : 1;
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.
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. {* Set if only required symbols should be added in the link hash table for
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. this object. Used by VMS linkers. *}
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. unsigned int selective_search : 1;
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.
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. {* Set if this is the linker output BFD. *}
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. unsigned int is_linker_output : 1;
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.
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. {* Set if this is the linker input BFD. *}
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. unsigned int is_linker_input : 1;
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.
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. {* If this is an input for a compiler plug-in library. *}
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. ENUM_BITFIELD (bfd_plugin_format) plugin_format : 2;
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.
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. {* Set if this is a plugin output file. *}
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. unsigned int lto_output : 1;
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.
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. {* Set to dummy BFD created when claimed by a compiler plug-in
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. library. *}
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. bfd *plugin_dummy_bfd;
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.
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. {* Currently my_archive is tested before adding origin to
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. anything. I believe that this can become always an add of
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. origin, with origin set to 0 for non archive files. *}
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. ufile_ptr origin;
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.
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. {* The origin in the archive of the proxy entry. This will
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. normally be the same as origin, except for thin archives,
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. when it will contain the current offset of the proxy in the
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. thin archive rather than the offset of the bfd in its actual
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. container. *}
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. ufile_ptr proxy_origin;
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.
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. {* A hash table for section names. *}
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. struct bfd_hash_table section_htab;
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.
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. {* Pointer to linked list of sections. *}
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. struct bfd_section *sections;
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.
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. {* The last section on the section list. *}
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. struct bfd_section *section_last;
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.
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. {* The number of sections. *}
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. unsigned int section_count;
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.
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. {* A field used by _bfd_generic_link_add_archive_symbols. This will
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. be used only for archive elements. *}
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. int archive_pass;
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.
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. {* Stuff only useful for object files:
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. The start address. *}
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. bfd_vma start_address;
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.
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. {* Symbol table for output BFD (with symcount entries).
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. Also used by the linker to cache input BFD symbols. *}
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. struct bfd_symbol **outsymbols;
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.
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. {* Used for input and output. *}
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. unsigned int symcount;
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.
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. {* Used for slurped dynamic symbol tables. *}
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. unsigned int dynsymcount;
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.
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. {* Pointer to structure which contains architecture information. *}
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. const struct bfd_arch_info *arch_info;
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.
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. {* Stuff only useful for archives. *}
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. void *arelt_data;
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. struct bfd *my_archive; {* The containing archive BFD. *}
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. struct bfd *archive_next; {* The next BFD in the archive. *}
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. struct bfd *archive_head; {* The first BFD in the archive. *}
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. struct bfd *nested_archives; {* List of nested archive in a flattened
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. thin archive. *}
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.
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. union {
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. {* For input BFDs, a chain of BFDs involved in a link. *}
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. struct bfd *next;
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. {* For output BFD, the linker hash table. *}
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. struct bfd_link_hash_table *hash;
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. } link;
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.
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. {* Used by the back end to hold private data. *}
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. union
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. {
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. struct aout_data_struct *aout_data;
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. struct artdata *aout_ar_data;
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. struct _oasys_data *oasys_obj_data;
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. struct _oasys_ar_data *oasys_ar_data;
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. struct coff_tdata *coff_obj_data;
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. struct pe_tdata *pe_obj_data;
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. struct xcoff_tdata *xcoff_obj_data;
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. struct ecoff_tdata *ecoff_obj_data;
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. struct ieee_data_struct *ieee_data;
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. struct ieee_ar_data_struct *ieee_ar_data;
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. struct srec_data_struct *srec_data;
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. struct verilog_data_struct *verilog_data;
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. struct ihex_data_struct *ihex_data;
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. struct tekhex_data_struct *tekhex_data;
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. struct elf_obj_tdata *elf_obj_data;
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. struct nlm_obj_tdata *nlm_obj_data;
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. struct bout_data_struct *bout_data;
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. struct mmo_data_struct *mmo_data;
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. struct sun_core_struct *sun_core_data;
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. struct sco5_core_struct *sco5_core_data;
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. struct trad_core_struct *trad_core_data;
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. struct som_data_struct *som_data;
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. struct hpux_core_struct *hpux_core_data;
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. struct hppabsd_core_struct *hppabsd_core_data;
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. struct sgi_core_struct *sgi_core_data;
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. struct lynx_core_struct *lynx_core_data;
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. struct osf_core_struct *osf_core_data;
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. struct cisco_core_struct *cisco_core_data;
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. struct versados_data_struct *versados_data;
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. struct netbsd_core_struct *netbsd_core_data;
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. struct mach_o_data_struct *mach_o_data;
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. struct mach_o_fat_data_struct *mach_o_fat_data;
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. struct plugin_data_struct *plugin_data;
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. struct bfd_pef_data_struct *pef_data;
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. struct bfd_pef_xlib_data_struct *pef_xlib_data;
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||
. struct bfd_sym_data_struct *sym_data;
|
||
. void *any;
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||
. }
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||
. tdata;
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||
.
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||
. {* Used by the application to hold private data. *}
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||
. void *usrdata;
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.
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. {* Where all the allocated stuff under this BFD goes. This is a
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. struct objalloc *, but we use void * to avoid requiring the inclusion
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. of objalloc.h. *}
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. void *memory;
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.
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. {* For input BFDs, the build ID, if the object has one. *}
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||
. const struct bfd_build_id *build_id;
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||
.};
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||
.
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.{* See note beside bfd_set_section_userdata. *}
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||
.static inline bfd_boolean
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.bfd_set_cacheable (bfd * abfd, bfd_boolean val)
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.{
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||
. abfd->cacheable = val;
|
||
. return TRUE;
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||
.}
|
||
.
|
||
*/
|
||
|
||
#include "sysdep.h"
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||
#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 "coff/sym.h"
|
||
#include "libcoff.h"
|
||
#include "libecoff.h"
|
||
#undef obj_symbols
|
||
#include "elf-bfd.h"
|
||
|
||
#ifndef EXIT_FAILURE
|
||
#define EXIT_FAILURE 1
|
||
#endif
|
||
|
||
|
||
/* 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 */
|
||
|
||
/*
|
||
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 == 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)
|
||
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.
|
||
*/
|
||
|
||
bfd_error_handler_type
|
||
bfd_set_error_handler (bfd_error_handler_type pnew)
|
||
{
|
||
bfd_error_handler_type pold;
|
||
|
||
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
|
||
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)
|
||
{
|
||
return _bfd_assert_handler;
|
||
}
|
||
|
||
/*
|
||
INODE
|
||
Miscellaneous, Memory Usage, Error reporting, BFD front end
|
||
|
||
SECTION
|
||
Miscellaneous
|
||
|
||
SUBSECTION
|
||
Miscellaneous functions
|
||
*/
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_get_reloc_upper_bound
|
||
|
||
SYNOPSIS
|
||
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}. If an error occurs, return -1.
|
||
|
||
*/
|
||
|
||
long
|
||
bfd_get_reloc_upper_bound (bfd *abfd, sec_ptr asect)
|
||
{
|
||
if (abfd->format != bfd_object)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return -1;
|
||
}
|
||
|
||
return BFD_SEND (abfd, _get_reloc_upper_bound, (abfd, asect));
|
||
}
|
||
|
||
/*
|
||
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.
|
||
|
||
*/
|
||
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));
|
||
}
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_set_reloc
|
||
|
||
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.
|
||
|
||
*/
|
||
|
||
void
|
||
bfd_set_reloc (bfd *ignore_abfd ATTRIBUTE_UNUSED,
|
||
sec_ptr asect,
|
||
arelent **location,
|
||
unsigned int count)
|
||
{
|
||
asect->orelocation = location;
|
||
asect->reloc_count = count;
|
||
}
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_set_file_flags
|
||
|
||
SYNOPSIS
|
||
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 <<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.
|
||
|
||
*/
|
||
|
||
bfd_boolean
|
||
bfd_set_file_flags (bfd *abfd, flagword flags)
|
||
{
|
||
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;
|
||
}
|
||
|
||
bfd_get_file_flags (abfd) = flags;
|
||
if ((flags & bfd_applicable_file_flags (abfd)) != flags)
|
||
{
|
||
bfd_set_error (bfd_error_invalid_operation);
|
||
return FALSE;
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
void
|
||
bfd_assert (const char *file, int 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_get_arch_size
|
||
|
||
SYNOPSIS
|
||
int bfd_get_arch_size (bfd *abfd);
|
||
|
||
DESCRIPTION
|
||
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 the arch size in bits if known, <<-1>> otherwise.
|
||
*/
|
||
|
||
int
|
||
bfd_get_arch_size (bfd *abfd)
|
||
{
|
||
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_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 (bfd *abfd)
|
||
{
|
||
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;
|
||
|
||
bfd_set_error (bfd_error_wrong_format);
|
||
return -1;
|
||
}
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_set_start_address
|
||
|
||
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 (bfd *abfd, bfd_vma vma)
|
||
{
|
||
abfd->start_address = vma;
|
||
return TRUE;
|
||
}
|
||
|
||
/*
|
||
FUNCTION
|
||
bfd_get_gp_size
|
||
|
||
SYNOPSIS
|
||
unsigned int bfd_get_gp_size (bfd *abfd);
|
||
|
||
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 (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_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);
|
||
|
||
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.
|
||
*/
|
||
|
||
bfd_vma
|
||
bfd_scan_vma (const char *string, const char **end, int base)
|
||
{
|
||
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 strtoul (string, (char **) end, base);
|
||
|
||
#ifdef HAVE_STRTOULL
|
||
if (sizeof (bfd_vma) <= sizeof (unsigned long long))
|
||
return strtoull (string, (char **) end, base);
|
||
#endif
|
||
|
||
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_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
|
||
The following functions exist but have not yet been documented.
|
||
|
||
.#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, 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))
|
||
.
|
||
.#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_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;
|
||
}
|