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104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/* Very simple "bfd" target, for GDB, the GNU debugger.
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Copyright (C) 2003-2018 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "target.h"
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#include "bfd-target.h"
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#include "exec.h"
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#include "gdb_bfd.h"
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/* The object that is stored in the target_ops->to_data field has this
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type. */
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struct target_bfd_data
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{
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/* The BFD we're wrapping. */
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struct bfd *bfd;
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/* The section table build from the ALLOC sections in BFD. Note
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that we can't rely on extracting the BFD from a random section in
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the table, since the table can be legitimately empty. */
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struct target_section_table table;
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};
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static enum target_xfer_status
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target_bfd_xfer_partial (struct target_ops *ops,
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enum target_object object,
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const char *annex, gdb_byte *readbuf,
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const gdb_byte *writebuf,
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ULONGEST offset, ULONGEST len,
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ULONGEST *xfered_len)
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{
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switch (object)
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{
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case TARGET_OBJECT_MEMORY:
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{
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struct target_bfd_data *data = (struct target_bfd_data *) ops->to_data;
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return section_table_xfer_memory_partial (readbuf, writebuf,
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offset, len, xfered_len,
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data->table.sections,
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data->table.sections_end,
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NULL);
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}
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default:
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return TARGET_XFER_E_IO;
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}
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}
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static struct target_section_table *
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target_bfd_get_section_table (struct target_ops *ops)
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{
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struct target_bfd_data *data = (struct target_bfd_data *) ops->to_data;
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return &data->table;
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}
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static void
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target_bfd_xclose (struct target_ops *t)
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{
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struct target_bfd_data *data = (struct target_bfd_data *) t->to_data;
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gdb_bfd_unref (data->bfd);
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xfree (data->table.sections);
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xfree (data);
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xfree (t);
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}
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struct target_ops *
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target_bfd_reopen (struct bfd *abfd)
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{
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struct target_ops *t;
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struct target_bfd_data *data;
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data = XCNEW (struct target_bfd_data);
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data->bfd = abfd;
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gdb_bfd_ref (abfd);
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build_section_table (abfd, &data->table.sections, &data->table.sections_end);
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t = XCNEW (struct target_ops);
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t->to_shortname = "bfd";
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t->to_longname = _("BFD backed target");
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t->to_doc = _("You should never see this");
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t->to_get_section_table = target_bfd_get_section_table;
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t->to_xfer_partial = target_bfd_xfer_partial;
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t->to_xclose = target_bfd_xclose;
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t->to_data = data;
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t->to_magic = OPS_MAGIC;
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return t;
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}
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