1 /* Very simple "bfd" target, for GDB, the GNU debugger. 2 3 Copyright (C) 2003-2013 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 #include "defs.h" 21 #include "target.h" 22 #include "bfd-target.h" 23 #include "exec.h" 24 #include "gdb_bfd.h" 25 26 /* The object that is stored in the target_ops->to_data field has this 27 type. */ 28 struct target_bfd_data 29 { 30 /* The BFD we're wrapping. */ 31 struct bfd *bfd; 32 33 /* The section table build from the ALLOC sections in BFD. Note 34 that we can't rely on extracting the BFD from a random section in 35 the table, since the table can be legitimately empty. */ 36 struct target_section_table table; 37 }; 38 39 static LONGEST 40 target_bfd_xfer_partial (struct target_ops *ops, 41 enum target_object object, 42 const char *annex, gdb_byte *readbuf, 43 const gdb_byte *writebuf, 44 ULONGEST offset, LONGEST len) 45 { 46 switch (object) 47 { 48 case TARGET_OBJECT_MEMORY: 49 { 50 struct target_bfd_data *data = ops->to_data; 51 return section_table_xfer_memory_partial (readbuf, writebuf, 52 offset, len, 53 data->table.sections, 54 data->table.sections_end, 55 NULL); 56 } 57 default: 58 return -1; 59 } 60 } 61 62 static struct target_section_table * 63 target_bfd_get_section_table (struct target_ops *ops) 64 { 65 struct target_bfd_data *data = ops->to_data; 66 return &data->table; 67 } 68 69 static void 70 target_bfd_xclose (struct target_ops *t, int quitting) 71 { 72 struct target_bfd_data *data = t->to_data; 73 74 gdb_bfd_unref (data->bfd); 75 xfree (data->table.sections); 76 xfree (data); 77 xfree (t); 78 } 79 80 struct target_ops * 81 target_bfd_reopen (struct bfd *abfd) 82 { 83 struct target_ops *t; 84 struct target_bfd_data *data; 85 86 data = XZALLOC (struct target_bfd_data); 87 data->bfd = abfd; 88 gdb_bfd_ref (abfd); 89 build_section_table (abfd, &data->table.sections, &data->table.sections_end); 90 91 t = XZALLOC (struct target_ops); 92 t->to_shortname = "bfd"; 93 t->to_longname = _("BFD backed target"); 94 t->to_doc = _("You should never see this"); 95 t->to_get_section_table = target_bfd_get_section_table; 96 t->to_xfer_partial = target_bfd_xfer_partial; 97 t->to_xclose = target_bfd_xclose; 98 t->to_data = data; 99 100 return t; 101 } 102