[deliverable/binutils-gdb.git] / gdb / gdb_bfd.h

/* Definitions for BFD wrappers used by GDB.

   Copyright (C) 2011-2013 Free Software Foundation, Inc.

   This file is part of GDB.

   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.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#ifndef GDB_BFD_H
#define GDB_BFD_H

#include "registry.h"

DECLARE_REGISTRY (bfd);

/* Make a copy ABFD's filename using bfd_alloc, and reassign it to the
   BFD.  This ensures that the BFD's filename has the same lifetime as
   the BFD itself.  */

void gdb_bfd_stash_filename (struct bfd *abfd);

/* Open a read-only (FOPEN_RB) BFD given arguments like bfd_fopen.
   Returns NULL on error.  On success, returns a new reference to the
   BFD, which must be freed with gdb_bfd_unref.  BFDs returned by this
   call are shared among all callers opening the same file.  If FD is
   not -1, then after this call it is owned by BFD.  */

struct bfd *gdb_bfd_open (const char *name, const char *target, int fd);

/* Increment the reference count of ABFD.  It is fine for ABFD to be
   NULL; in this case the function does nothing.  */

void gdb_bfd_ref (struct bfd *abfd);

/* Decrement the reference count of ABFD.  If this is the last
   reference, ABFD will be freed.  If ABFD is NULL, this function does
   nothing.  */

void gdb_bfd_unref (struct bfd *abfd);

/* Mark the CHILD BFD as being a member of PARENT.  Also, increment
   the reference count of CHILD.  Calling this function ensures that
   as along as CHILD remains alive, PARENT will as well.  Both CHILD
   and PARENT must be non-NULL.  This can be called more than once
   with the same arguments; but it is not allowed to call it for a
   single CHILD with different values for PARENT.  */

void gdb_bfd_mark_parent (bfd *child, bfd *parent);

/* Try to read or map the contents of the section SECT.  If
   successful, the section data is returned and *SIZE is set to the
   size of the section data; this may not be the same as the size
   according to bfd_get_section_size if the section was compressed.
   The returned section data is associated with the BFD and will be
   destroyed when the BFD is destroyed.  There is no other way to free
   it; for temporary uses of section data, see
   bfd_malloc_and_get_section.  SECT may not have relocations.  This
   function will throw on error.  */

const gdb_byte *gdb_bfd_map_section (asection *section, bfd_size_type *size);

\f

/* A wrapper for bfd_fopen that initializes the gdb-specific reference
   count and calls gdb_bfd_stash_filename.  */

bfd *gdb_bfd_fopen (const char *, const char *, const char *, int);

/* A wrapper for bfd_openr that initializes the gdb-specific reference
   count and calls gdb_bfd_stash_filename.  */

bfd *gdb_bfd_openr (const char *, const char *);

/* A wrapper for bfd_openw that initializes the gdb-specific reference
   count and calls gdb_bfd_stash_filename.  */

bfd *gdb_bfd_openw (const char *, const char *);

/* A wrapper for bfd_openr_iovec that initializes the gdb-specific
   reference count and calls gdb_bfd_stash_filename.  */

bfd *gdb_bfd_openr_iovec (const char *filename, const char *target,
			  void *(*open_func) (struct bfd *nbfd,
					      void *open_closure),
			  void *open_closure,
			  file_ptr (*pread_func) (struct bfd *nbfd,
						  void *stream,
						  void *buf,
						  file_ptr nbytes,
						  file_ptr offset),
			  int (*close_func) (struct bfd *nbfd,
					     void *stream),
			  int (*stat_func) (struct bfd *abfd,
					    void *stream,
					    struct stat *sb));

/* A wrapper for bfd_openr_next_archived_file that initializes the
   gdb-specific reference count and calls gdb_bfd_stash_filename.  */

bfd *gdb_bfd_openr_next_archived_file (bfd *archive, bfd *previous);

/* A wrapper for bfd_fdopenr that initializes the gdb-specific
   reference count and calls gdb_bfd_stash_filename.  */

bfd *gdb_bfd_fdopenr (const char *filename, const char *target, int fd);

#endif /* GDB_BFD_H */
Commit	Line	Data
cbb099e8 TT	1	/* Definitions for BFD wrappers used by GDB.
cbb099e8 TT	2
28e7fd62	3	Copyright (C) 2011-2013 Free Software Foundation, Inc.
cbb099e8 TT	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	19
	20	#ifndef GDB_BFD_H
	21	#define GDB_BFD_H
	22
e992eda4 TT	23	#include "registry.h"
	24
	25	DECLARE_REGISTRY (bfd);
	26
a4453b7e TT	27	/* Make a copy ABFD's filename using bfd_alloc, and reassign it to the
	28	BFD. This ensures that the BFD's filename has the same lifetime as
	29	the BFD itself. */
	30
	31	void gdb_bfd_stash_filename (struct bfd *abfd);
	32
6ec53d05 TT	33	/* Open a read-only (FOPEN_RB) BFD given arguments like bfd_fopen.
	34	Returns NULL on error. On success, returns a new reference to the
	35	BFD, which must be freed with gdb_bfd_unref. BFDs returned by this
	36	call are shared among all callers opening the same file. If FD is
	37	not -1, then after this call it is owned by BFD. */
	38
	39	struct bfd gdb_bfd_open (const char name, const char *target, int fd);
	40
520b0001 TT	41	/* Increment the reference count of ABFD. It is fine for ABFD to be
520b0001 TT	42	NULL; in this case the function does nothing. */
cbb099e8	43
520b0001	44	void gdb_bfd_ref (struct bfd *abfd);
cbb099e8	45
520b0001 TT	46	/* Decrement the reference count of ABFD. If this is the last
	47	reference, ABFD will be freed. If ABFD is NULL, this function does
	48	nothing. */
cbb099e8 TT	49
	50	void gdb_bfd_unref (struct bfd *abfd);
	51
0cd61f44 TT	52	/* Mark the CHILD BFD as being a member of PARENT. Also, increment
	53	the reference count of CHILD. Calling this function ensures that
	54	as along as CHILD remains alive, PARENT will as well. Both CHILD
	55	and PARENT must be non-NULL. This can be called more than once
	56	with the same arguments; but it is not allowed to call it for a
	57	single CHILD with different values for PARENT. */
	58
	59	void gdb_bfd_mark_parent (bfd child, bfd parent);
	60
4bf44c1c TT	61	/* Try to read or map the contents of the section SECT. If
	62	successful, the section data is returned and *SIZE is set to the
	63	size of the section data; this may not be the same as the size
	64	according to bfd_get_section_size if the section was compressed.
	65	The returned section data is associated with the BFD and will be
	66	destroyed when the BFD is destroyed. There is no other way to free
	67	it; for temporary uses of section data, see
	68	bfd_malloc_and_get_section. SECT may not have relocations. This
	69	function will throw on error. */
	70
	71	const gdb_byte gdb_bfd_map_section (asection section, bfd_size_type *size);
	72
64c31149 TT	73	\f
	74
	75	/* A wrapper for bfd_fopen that initializes the gdb-specific reference
	76	count and calls gdb_bfd_stash_filename. */
	77
	78	bfd gdb_bfd_fopen (const char , const char , const char , int);
	79
	80	/* A wrapper for bfd_openr that initializes the gdb-specific reference
	81	count and calls gdb_bfd_stash_filename. */
	82
	83	bfd gdb_bfd_openr (const char , const char *);
	84
	85	/* A wrapper for bfd_openw that initializes the gdb-specific reference
	86	count and calls gdb_bfd_stash_filename. */
	87
	88	bfd gdb_bfd_openw (const char , const char *);
	89
	90	/* A wrapper for bfd_openr_iovec that initializes the gdb-specific
	91	reference count and calls gdb_bfd_stash_filename. */
	92
	93	bfd gdb_bfd_openr_iovec (const char filename, const char *target,
	94	void (open_func) (struct bfd *nbfd,
	95	void *open_closure),
	96	void *open_closure,
	97	file_ptr (pread_func) (struct bfd nbfd,
	98	void *stream,
	99	void *buf,
	100	file_ptr nbytes,
	101	file_ptr offset),
	102	int (close_func) (struct bfd nbfd,
	103	void *stream),
	104	int (stat_func) (struct bfd abfd,
	105	void *stream,
	106	struct stat *sb));
	107
	108	/* A wrapper for bfd_openr_next_archived_file that initializes the
	109	gdb-specific reference count and calls gdb_bfd_stash_filename. */
	110
	111	bfd gdb_bfd_openr_next_archived_file (bfd archive, bfd *previous);
	112
	113	/* A wrapper for bfd_fdopenr that initializes the gdb-specific
	114	reference count and calls gdb_bfd_stash_filename. */
	115
	116	bfd gdb_bfd_fdopenr (const char filename, const char *target, int fd);
	117
cbb099e8	118	#endif /* GDB_BFD_H */