mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-30 23:40:24 +00:00
a9762ec78a
Switch the license of all .h files to GPLv3.
Switch the license of all .cc files to GPLv3.
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/* Very simple "bfd" target, for GDB, the GNU debugger.
|
|
|
|
Copyright (C) 2003, 2005, 2007 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/>. */
|
|
|
|
#include "defs.h"
|
|
#include "target.h"
|
|
#include "bfd-target.h"
|
|
#include "gdb_assert.h"
|
|
#include "gdb_string.h"
|
|
|
|
/* Locate all mappable sections of a BFD file, filling in a target
|
|
section for each. */
|
|
|
|
struct section_closure
|
|
{
|
|
struct section_table *end;
|
|
};
|
|
|
|
static void
|
|
add_to_section_table (struct bfd *abfd, struct bfd_section *asect,
|
|
void *closure)
|
|
{
|
|
struct section_closure *pp = closure;
|
|
flagword aflag;
|
|
|
|
/* NOTE: cagney/2003-10-22: Is this pruning useful? */
|
|
aflag = bfd_get_section_flags (abfd, asect);
|
|
if (!(aflag & SEC_ALLOC))
|
|
return;
|
|
if (bfd_section_size (abfd, asect) == 0)
|
|
return;
|
|
pp->end->bfd = abfd;
|
|
pp->end->the_bfd_section = asect;
|
|
pp->end->addr = bfd_section_vma (abfd, asect);
|
|
pp->end->endaddr = pp->end->addr + bfd_section_size (abfd, asect);
|
|
pp->end++;
|
|
}
|
|
|
|
void
|
|
build_target_sections_from_bfd (struct target_ops *targ, struct bfd *abfd)
|
|
{
|
|
unsigned count;
|
|
struct section_table *start;
|
|
struct section_closure cl;
|
|
|
|
count = bfd_count_sections (abfd);
|
|
target_resize_to_sections (targ, count);
|
|
start = targ->to_sections;
|
|
cl.end = targ->to_sections;
|
|
bfd_map_over_sections (abfd, add_to_section_table, &cl);
|
|
gdb_assert (cl.end - start <= count);
|
|
}
|
|
|
|
LONGEST
|
|
target_bfd_xfer_partial (struct target_ops *ops,
|
|
enum target_object object,
|
|
const char *annex, gdb_byte *readbuf,
|
|
const gdb_byte *writebuf,
|
|
ULONGEST offset, LONGEST len)
|
|
{
|
|
switch (object)
|
|
{
|
|
case TARGET_OBJECT_MEMORY:
|
|
{
|
|
struct section_table *s = target_section_by_addr (ops, offset);
|
|
if (s == NULL)
|
|
return -1;
|
|
/* If the length extends beyond the section, truncate it. Be
|
|
careful to not suffer from overflow (wish S contained a
|
|
length). */
|
|
if ((offset - s->addr + len) > (s->endaddr - s->addr))
|
|
len = (s->endaddr - s->addr) - (offset - s->addr);
|
|
if (readbuf != NULL
|
|
&& !bfd_get_section_contents (s->bfd, s->the_bfd_section,
|
|
readbuf, offset - s->addr, len))
|
|
return -1;
|
|
#if 1
|
|
if (writebuf != NULL)
|
|
return -1;
|
|
#else
|
|
/* FIXME: cagney/2003-10-31: The BFD interface doesn't yet
|
|
take a const buffer. */
|
|
if (writebuf != NULL
|
|
&& !bfd_set_section_contents (s->bfd, s->the_bfd_section,
|
|
writebuf, offset - s->addr, len))
|
|
return -1;
|
|
#endif
|
|
return len;
|
|
}
|
|
default:
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
void
|
|
target_bfd_xclose (struct target_ops *t, int quitting)
|
|
{
|
|
bfd_close (t->to_data);
|
|
xfree (t->to_sections);
|
|
xfree (t);
|
|
}
|
|
|
|
struct target_ops *
|
|
target_bfd_reopen (struct bfd *bfd)
|
|
{
|
|
struct target_ops *t = XZALLOC (struct target_ops);
|
|
t->to_shortname = "bfd";
|
|
t->to_longname = _("BFD backed target");
|
|
t->to_doc = _("You should never see this");
|
|
t->to_xfer_partial = target_bfd_xfer_partial;
|
|
t->to_xclose = target_bfd_xclose;
|
|
t->to_data = bfd;
|
|
build_target_sections_from_bfd (t, bfd);
|
|
return t;
|
|
}
|