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/* Work with executable files, for GDB, the GNU debugger.
Copyright (C) 2003-2020 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 EXEC_H
#define EXEC_H
#include "target.h"
#include "progspace.h"
#include "memrange.h"
#include "symfile-add-flags.h"
struct target_section;
struct target_ops;
struct bfd;
struct objfile;
#define exec_bfd current_program_space->ebfd
#define exec_bfd_mtime current_program_space->ebfd_mtime
#define exec_filename current_program_space->pspace_exec_filename
/* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
Returns 0 if OK, 1 on error. */
extern int build_section_table (struct bfd *, struct target_section **,
struct target_section **);
/* Remove all entries from TABLE. */
extern void clear_section_table (struct target_section_table *table);
/* The current inferior is a child vforked and its program space is
shared with its parent. This pushes the exec target on the
current/child inferior's target stack if there are sections in the
program space's section table. */
extern void exec_on_vfork ();
/* Read from mappable read-only sections of BFD executable files.
Return TARGET_XFER_OK, if read is successful. Return
TARGET_XFER_EOF if read is done. Return TARGET_XFER_E_IO
otherwise. */
extern enum target_xfer_status
exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset,
ULONGEST len, ULONGEST *xfered_len);
/* Read or write from mappable sections of BFD executable files.
Request to transfer up to LEN 8-bit bytes of the target sections
defined by SECTIONS and SECTIONS_END. The OFFSET specifies the
starting address.
The MATCH_CB predicate is optional; when provided it will be called
for each section under consideration. When MATCH_CB evaluates as
true, the section remains under consideration; a false result
removes it from consideration for performing the memory transfers
noted above. See memory_xfer_partial_1() in target.c for an
example.
Return the number of bytes actually transfered, or zero when no
data is available for the requested range.
This function is intended to be used from target_xfer_partial
implementations. See target_read and target_write for more
information.
One, and only one, of readbuf or writebuf must be non-NULL. */
extern enum target_xfer_status
section_table_xfer_memory_partial (gdb_byte *,
const gdb_byte *,
ULONGEST, ULONGEST, ULONGEST *,
struct target_section *,
struct target_section *,
gdb::function_view<bool
(const struct target_section *)> match_cb
= nullptr);
/* Read from mappable read-only sections of BFD executable files.
Similar to exec_read_partial_read_only, but return
TARGET_XFER_UNAVAILABLE if data is unavailable. */
extern enum target_xfer_status
section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset,
ULONGEST len, ULONGEST *xfered_len);
/* Set the loaded address of a section. */
extern void exec_set_section_address (const char *, int, CORE_ADDR);
/* Remove all target sections owned by OWNER. */
extern void remove_target_sections (void *owner);
/* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the
current set of target sections. */
extern void add_target_sections (void *owner,
struct target_section *sections,
struct target_section *sections_end);
/* Add the sections of OBJFILE to the current set of target sections.
* OBJFILE owns the new target sections. */
extern void add_target_sections_of_objfile (struct objfile *objfile);
/* Prints info about all sections defined in the TABLE. ABFD is
special cased --- it's filename is omitted; if it is the executable
file, its entry point is printed. */
extern void print_section_info (struct target_section_table *table,
bfd *abfd);
extern void exec_close (void);
/* Helper function that attempts to open the symbol file at EXEC_FILE_HOST.
If successful, it proceeds to add the symbol file as the main symbol file.
ADD_FLAGS is passed on to the function adding the symbol file. */
extern void try_open_exec_file (const char *exec_file_host,
struct inferior *inf,
symfile_add_flags add_flags);
#endif
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