mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-22 08:43:33 +08:00
185 lines
6.6 KiB
C
185 lines
6.6 KiB
C
/* Definitions for BFD wrappers used by GDB.
|
||
|
||
Copyright (C) 2011-2020 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"
|
||
#include "gdbsupport/gdb_ref_ptr.h"
|
||
|
||
DECLARE_REGISTRY (bfd);
|
||
|
||
/* If supplied a path starting with this sequence, gdb_bfd_open will
|
||
open BFDs using target fileio operations. */
|
||
|
||
#define TARGET_SYSROOT_PREFIX "target:"
|
||
|
||
/* Returns nonzero if NAME starts with TARGET_SYSROOT_PREFIX, zero
|
||
otherwise. */
|
||
|
||
int is_target_filename (const char *name);
|
||
|
||
/* Returns nonzero if the filename associated with ABFD starts with
|
||
TARGET_SYSROOT_PREFIX, zero otherwise. */
|
||
|
||
int gdb_bfd_has_target_filename (struct bfd *abfd);
|
||
|
||
/* 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);
|
||
|
||
/* A policy class for gdb::ref_ptr for BFD reference counting. */
|
||
struct gdb_bfd_ref_policy
|
||
{
|
||
static void incref (struct bfd *abfd)
|
||
{
|
||
gdb_bfd_ref (abfd);
|
||
}
|
||
|
||
static void decref (struct bfd *abfd)
|
||
{
|
||
gdb_bfd_unref (abfd);
|
||
}
|
||
};
|
||
|
||
/* A gdb::ref_ptr that has been specialized for BFD objects. */
|
||
typedef gdb::ref_ptr<struct bfd, gdb_bfd_ref_policy> gdb_bfd_ref_ptr;
|
||
|
||
/* Open a read-only (FOPEN_RB) BFD given arguments like bfd_fopen.
|
||
If NAME starts with TARGET_SYSROOT_PREFIX then the BFD will be
|
||
opened using target fileio operations if necessary. Returns NULL
|
||
on error. On success, returns a new reference to the BFD. 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.
|
||
If the BFD was not accessed using target fileio operations then the
|
||
filename associated with the BFD and accessible with
|
||
bfd_get_filename will not be exactly NAME but rather NAME with
|
||
TARGET_SYSROOT_PREFIX stripped. */
|
||
|
||
gdb_bfd_ref_ptr gdb_bfd_open (const char *name, const char *target, int fd);
|
||
|
||
/* 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);
|
||
|
||
/* Mark INCLUDEE as being included by INCLUDER.
|
||
This is used to associate the life time of INCLUDEE with INCLUDER.
|
||
For example, with Fission, one file can refer to debug info in another
|
||
file, and internal tables we build for the main file (INCLUDER) may refer
|
||
to data contained in INCLUDEE. Therefore we want to keep INCLUDEE around
|
||
at least as long as INCLUDER exists.
|
||
|
||
Note that this is different than gdb_bfd_mark_parent because in our case
|
||
lifetime tracking is based on the "parent" whereas in gdb_bfd_mark_parent
|
||
lifetime tracking is based on the "child". Plus in our case INCLUDEE could
|
||
have multiple different "parents". */
|
||
|
||
void gdb_bfd_record_inclusion (bfd *includer, bfd *includee);
|
||
|
||
/* 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_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. If there is an error reading the section,
|
||
this issues a warning, sets *SIZE to 0, and returns NULL. */
|
||
|
||
const gdb_byte *gdb_bfd_map_section (asection *section, bfd_size_type *size);
|
||
|
||
/* Compute the CRC for ABFD. The CRC is used to find and verify
|
||
separate debug files. When successful, this fills in *CRC_OUT and
|
||
returns 1. Otherwise, this issues a warning and returns 0. */
|
||
|
||
int gdb_bfd_crc (struct bfd *abfd, unsigned long *crc_out);
|
||
|
||
|
||
|
||
/* A wrapper for bfd_fopen that initializes the gdb-specific reference
|
||
count. */
|
||
|
||
gdb_bfd_ref_ptr gdb_bfd_fopen (const char *, const char *, const char *, int);
|
||
|
||
/* A wrapper for bfd_openr that initializes the gdb-specific reference
|
||
count. */
|
||
|
||
gdb_bfd_ref_ptr gdb_bfd_openr (const char *, const char *);
|
||
|
||
/* A wrapper for bfd_openw that initializes the gdb-specific reference
|
||
count. */
|
||
|
||
gdb_bfd_ref_ptr gdb_bfd_openw (const char *, const char *);
|
||
|
||
/* A wrapper for bfd_openr_iovec that initializes the gdb-specific
|
||
reference count. */
|
||
|
||
gdb_bfd_ref_ptr 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. */
|
||
|
||
gdb_bfd_ref_ptr gdb_bfd_openr_next_archived_file (bfd *archive, bfd *previous);
|
||
|
||
|
||
|
||
|
||
/* Return the index of the BFD section SECTION. Ordinarily this is
|
||
just the section's index, but for some special sections, like
|
||
bfd_com_section_ptr, it will be a synthesized value. */
|
||
|
||
int gdb_bfd_section_index (bfd *abfd, asection *section);
|
||
|
||
|
||
/* Like bfd_count_sections, but include any possible global sections,
|
||
like bfd_com_section_ptr. */
|
||
|
||
int gdb_bfd_count_sections (bfd *abfd);
|
||
|
||
/* Return true if any section requires relocations, false
|
||
otherwise. */
|
||
|
||
int gdb_bfd_requires_relocations (bfd *abfd);
|
||
|
||
#endif /* GDB_BFD_H */
|