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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [bfd-target.c] - Rev 411
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/* Very simple "bfd" target, for GDB, the GNU debugger. Copyright (C) 2003, 2005, 2007, 2008 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; }
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