gdb/exec.h

   1 /* Work with executable files, for GDB, the GNU debugger.
   2
   3    Copyright (C) 2003-2014 Free Software Foundation, Inc.
   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 EXEC_H
  21 #define EXEC_H
  22
  23 #include "target.h"
  24 #include "progspace.h"
  25 #include "memrange.h"
  26
  27 struct target_section;
  28 struct target_ops;
  29 struct bfd;
  30 struct objfile;
  31
  32 extern struct target_ops exec_ops;
  33
  34 #define exec_bfd current_program_space->ebfd
  35 #define exec_bfd_mtime current_program_space->ebfd_mtime
  36 #define exec_filename current_program_space->pspace_exec_filename
  37
  38 /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
  39    Returns 0 if OK, 1 on error.  */
  40
  41 extern int build_section_table (struct bfd *, struct target_section **,
  42                                 struct target_section **);
  43
  44 /* Remove all entries from TABLE.  */
  45
  46 extern void clear_section_table (struct target_section_table *table);
  47
  48 /* Read from mappable read-only sections of BFD executable files.
  49    Return TARGET_XFER_OK, if read is successful.  Return
  50    TARGET_XFER_EOF if read is done.  Return TARGET_XFER_E_IO
  51    otherwise.  */
  52
  53 extern enum target_xfer_status
  54   exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset,
  55                                ULONGEST len, ULONGEST *xfered_len);
  56
  57 /* Read or write from mappable sections of BFD executable files.
  58
  59    Request to transfer up to LEN 8-bit bytes of the target sections
  60    defined by SECTIONS and SECTIONS_END.  The OFFSET specifies the
  61    starting address.
  62    If SECTION_NAME is not NULL, only access sections with that same
  63    name.
  64
  65    Return the number of bytes actually transfered, or zero when no
  66    data is available for the requested range.
  67
  68    This function is intended to be used from target_xfer_partial
  69    implementations.  See target_read and target_write for more
  70    information.
  71
  72    One, and only one, of readbuf or writebuf must be non-NULL.  */
  73
  74 extern enum target_xfer_status
  75   section_table_xfer_memory_partial (gdb_byte *,
  76                                      const gdb_byte *,
  77                                      ULONGEST, ULONGEST, ULONGEST *,
  78                                      struct target_section *,
  79                                      struct target_section *,
  80                                      const char *);
  81
  82 /* Read from mappable read-only sections of BFD executable files.
  83    Similar to exec_read_partial_read_only, but return
  84    TARGET_XFER_UNAVAILABLE if data is unavailable.  */
  85
  86 extern enum target_xfer_status
  87   section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset,
  88                                        ULONGEST len, ULONGEST *xfered_len);
  89
  90 /* Set the loaded address of a section.  */
  91 extern void exec_set_section_address (const char *, int, CORE_ADDR);
  92
  93 /* Remove all target sections owned by OWNER.  */
  94
  95 extern void remove_target_sections (void *owner);
  96
  97 /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the
  98    current set of target sections.  */
  99
 100 extern void add_target_sections (void *owner,
 101                                  struct target_section *sections,
 102                                  struct target_section *sections_end);
 103
 104 /* Add the sections of OBJFILE to the current set of target sections.
 105  * OBJFILE owns the new target sections.  */
 106
 107 extern void add_target_sections_of_objfile (struct objfile *objfile);
 108
 109 /* Prints info about all sections defined in the TABLE.  ABFD is
 110    special cased --- it's filename is omitted; if it is the executable
 111    file, its entry point is printed.  */
 112
 113 extern void print_section_info (struct target_section_table *table,
 114                                 bfd *abfd);
 115
 116 extern void exec_close (void);
 117
 118 #endif