1 /* Very simple "bfd" target, for GDB, the GNU debugger.
3 Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc.
5 This file is part of GDB.
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 2 of the License, or
10 (at your option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
24 #include "bfd-target.h"
25 #include "gdb_assert.h"
26 #include "gdb_string.h"
28 /* Locate all mappable sections of a BFD file, filling in a target
31 struct section_closure
33 struct section_table *end;
37 add_to_section_table (struct bfd *abfd, struct bfd_section *asect,
40 struct section_closure *pp = closure;
43 /* NOTE: cagney/2003-10-22: Is this pruning useful? */
44 aflag = bfd_get_section_flags (abfd, asect);
45 if (!(aflag & SEC_ALLOC))
47 if (bfd_section_size (abfd, asect) == 0)
50 pp->end->the_bfd_section = asect;
51 pp->end->addr = bfd_section_vma (abfd, asect);
52 pp->end->endaddr = pp->end->addr + bfd_section_size (abfd, asect);
57 build_target_sections_from_bfd (struct target_ops *targ, struct bfd *abfd)
60 struct section_table *start;
61 struct section_closure cl;
63 count = bfd_count_sections (abfd);
64 target_resize_to_sections (targ, count);
65 start = targ->to_sections;
66 cl.end = targ->to_sections;
67 bfd_map_over_sections (abfd, add_to_section_table, &cl);
68 gdb_assert (cl.end - start <= count);
72 target_bfd_xfer_partial (struct target_ops *ops,
73 enum target_object object,
74 const char *annex, gdb_byte *readbuf,
75 const gdb_byte *writebuf,
76 ULONGEST offset, LONGEST len)
80 case TARGET_OBJECT_MEMORY:
82 struct section_table *s = target_section_by_addr (ops, offset);
85 /* If the length extends beyond the section, truncate it. Be
86 careful to not suffer from overflow (wish S contained a
88 if ((offset - s->addr + len) > (s->endaddr - s->addr))
89 len = (s->endaddr - s->addr) - (offset - s->addr);
91 && !bfd_get_section_contents (s->bfd, s->the_bfd_section,
92 readbuf, offset - s->addr, len))
98 /* FIXME: cagney/2003-10-31: The BFD interface doesn't yet
99 take a const buffer. */
101 && !bfd_set_section_contents (s->bfd, s->the_bfd_section,
102 writebuf, offset - s->addr, len))
113 target_bfd_xclose (struct target_ops *t, int quitting)
115 bfd_close (t->to_data);
116 xfree (t->to_sections);
121 target_bfd_reopen (struct bfd *bfd)
123 struct target_ops *t = XZALLOC (struct target_ops);
124 t->to_shortname = "bfd";
125 t->to_longname = _("BFD backed target");
126 t->to_doc = _("You should never see this");
127 t->to_xfer_partial = target_bfd_xfer_partial;
128 t->to_xclose = target_bfd_xclose;
130 build_target_sections_from_bfd (t, bfd);