| 1 | /* Very simple "bfd" target, for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 2003-2015 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 enum target_xfer_status |
| 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, ULONGEST len, |
| 45 | ULONGEST *xfered_len) |
| 46 | { |
| 47 | switch (object) |
| 48 | { |
| 49 | case TARGET_OBJECT_MEMORY: |
| 50 | { |
| 51 | struct target_bfd_data *data = ops->to_data; |
| 52 | return section_table_xfer_memory_partial (readbuf, writebuf, |
| 53 | offset, len, xfered_len, |
| 54 | data->table.sections, |
| 55 | data->table.sections_end, |
| 56 | NULL); |
| 57 | } |
| 58 | default: |
| 59 | return TARGET_XFER_E_IO; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | static struct target_section_table * |
| 64 | target_bfd_get_section_table (struct target_ops *ops) |
| 65 | { |
| 66 | struct target_bfd_data *data = ops->to_data; |
| 67 | return &data->table; |
| 68 | } |
| 69 | |
| 70 | static void |
| 71 | target_bfd_xclose (struct target_ops *t) |
| 72 | { |
| 73 | struct target_bfd_data *data = t->to_data; |
| 74 | |
| 75 | gdb_bfd_unref (data->bfd); |
| 76 | xfree (data->table.sections); |
| 77 | xfree (data); |
| 78 | xfree (t); |
| 79 | } |
| 80 | |
| 81 | struct target_ops * |
| 82 | target_bfd_reopen (struct bfd *abfd) |
| 83 | { |
| 84 | struct target_ops *t; |
| 85 | struct target_bfd_data *data; |
| 86 | |
| 87 | data = XCNEW (struct target_bfd_data); |
| 88 | data->bfd = abfd; |
| 89 | gdb_bfd_ref (abfd); |
| 90 | build_section_table (abfd, &data->table.sections, &data->table.sections_end); |
| 91 | |
| 92 | t = XCNEW (struct target_ops); |
| 93 | t->to_shortname = "bfd"; |
| 94 | t->to_longname = _("BFD backed target"); |
| 95 | t->to_doc = _("You should never see this"); |
| 96 | t->to_get_section_table = target_bfd_get_section_table; |
| 97 | t->to_xfer_partial = target_bfd_xfer_partial; |
| 98 | t->to_xclose = target_bfd_xclose; |
| 99 | t->to_data = data; |
| 100 | t->to_magic = OPS_MAGIC; |
| 101 | |
| 102 | return t; |
| 103 | } |