2003-10-31 Andrew Cagney <cagney@redhat.com>
* defs.h (XZALLOC): Define. * target.h (struct target_ops): Add "to_data"; * bfd-target.h, bfd-target.c: New files. * Makefile.in (SFILES): Add "bfd-target.c". (COMMON_OBS): Add "bfd-target.o". (bfd-target.o): Specify dependencies. (bfd_target_h): Define. * defs.h (XZALLOC): Define.
This commit is contained in:
Andrew Cagney
parent
162cec1b31
commit
bba2d28ded
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@ -1,3 +1,14 @@
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2003-10-31 Andrew Cagney <cagney@redhat.com>
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* defs.h (XZALLOC): Define.
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* target.h (struct target_ops): Add "to_data";
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* bfd-target.h, bfd-target.c: New files.
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* Makefile.in (SFILES): Add "bfd-target.c".
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(COMMON_OBS): Add "bfd-target.o".
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(bfd-target.o): Specify dependencies.
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(bfd_target_h): Define.
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* defs.h (XZALLOC): Define.
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2003-10-31 Andrew Cagney <cagney@redhat.com>
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* rs6000-tdep.c (rs6000_gdbarch_init): For 64-bit ABI, set
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@ -511,7 +511,9 @@ TARGET_FLAGS_TO_PASS = \
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SFILES = ada-exp.y ada-lang.c ada-typeprint.c ada-valprint.c ada-tasks.c \
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ax-general.c ax-gdb.c \
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bcache.c block.c blockframe.c breakpoint.c buildsym.c \
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bcache.c \
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bfd-target.c \
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block.c blockframe.c breakpoint.c buildsym.c \
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c-exp.y c-lang.c c-typeprint.c c-valprint.c \
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charset.c cli-out.c coffread.c coff-pe-read.c \
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complaints.c completer.c corefile.c \
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@ -634,6 +636,7 @@ arm_tdep_h = arm-tdep.h
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ax_gdb_h = ax-gdb.h
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ax_h = ax.h $(doublest_h)
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bcache_h = bcache.h
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bfd_target_h = bfd-target.h
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block_h = block.h
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breakpoint_h = breakpoint.h $(frame_h) $(value_h) $(gdb_events_h)
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buildsym_h = buildsym.h
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@ -867,7 +870,9 @@ TAGFILES_NO_SRCDIR = $(SFILES) $(HFILES_NO_SRCDIR) $(ALLDEPFILES) \
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$(SUBDIR_CLI_SRCS)
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TAGFILES_WITH_SRCDIR = $(HFILES_WITH_SRCDIR)
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COMMON_OBS = version.o blockframe.o breakpoint.o findvar.o regcache.o \
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COMMON_OBS = version.o \
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bfd-target.o \
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blockframe.o breakpoint.o findvar.o regcache.o \
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charset.o disasm.o dummy-frame.o \
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source.o values.o eval.o valops.o valarith.o valprint.o printcmd.o \
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block.o symtab.o symfile.o symmisc.o linespec.o dictionary.o \
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@ -1600,6 +1605,8 @@ ax-gdb.o: ax-gdb.c $(defs_h) $(symtab_h) $(symfile_h) $(gdbtypes_h) \
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$(regcache_h)
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ax-general.o: ax-general.c $(defs_h) $(ax_h) $(value_h) $(gdb_string_h)
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bcache.o: bcache.c $(defs_h) $(gdb_obstack_h) $(bcache_h) $(gdb_string_h)
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bfd-target.o: bfd-target.c $(defs_h) $(target_h) $(bfd_target_h) \
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$(gdb_assert_h) $(gdb_string_h)
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block.o: block.c $(defs_h) $(block_h) $(symtab_h) $(symfile_h) \
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$(gdb_obstack_h) $(cp_support_h)
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blockframe.o: blockframe.c $(defs_h) $(symtab_h) $(bfd_h) $(symfile_h) \
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@ -0,0 +1,131 @@
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/* Very simple "bfd" target, for GDB, the GNU debugger.
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Copyright 2003 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 "gdb_assert.h"
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#include "gdb_string.h"
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/* Locate all mappable sections of a BFD file, filling in a target
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section for each. */
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struct section_closure
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{
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struct section_table *end;
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};
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static void
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add_to_section_table (struct bfd *abfd, struct bfd_section *asect,
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void *closure)
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{
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struct section_closure *pp = closure;
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flagword aflag;
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/* NOTE: cagney/2003-10-22: Is this pruning useful? */
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aflag = bfd_get_section_flags (abfd, asect);
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if (!(aflag & SEC_ALLOC))
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return;
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if (bfd_section_size (abfd, asect) == 0)
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return;
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pp->end->bfd = abfd;
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pp->end->the_bfd_section = asect;
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pp->end->addr = bfd_section_vma (abfd, asect);
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pp->end->endaddr = pp->end->addr + bfd_section_size (abfd, asect);
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pp->end++;
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}
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void
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build_target_sections_from_bfd (struct target_ops *targ, struct bfd *abfd)
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{
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unsigned count;
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struct section_table *start;
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struct section_closure cl;
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count = bfd_count_sections (abfd);
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target_resize_to_sections (targ, count);
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start = targ->to_sections;
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cl.end = targ->to_sections;
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bfd_map_over_sections (abfd, add_to_section_table, &cl);
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gdb_assert (cl.end - start <= count);
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}
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LONGEST
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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, const void *writebuf,
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void *readbuf, ULONGEST offset, LONGEST 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 section_table *s = target_section_by_addr (ops, offset);
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if (s == NULL)
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return -1;
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/* If the length extends beyond the section, truncate it. Be
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careful to not suffer from overflow (wish S contained a
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length). */
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if ((offset - s->addr + len) > (s->endaddr - s->addr))
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len = (s->endaddr - s->addr) - (offset - s->addr);
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if (readbuf != NULL
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&& !bfd_get_section_contents (s->bfd, s->the_bfd_section,
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readbuf, offset - s->addr, len))
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return -1;
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#if 1
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if (writebuf != NULL)
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return -1;
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#else
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/* FIXME: cagney/2003-10-31: The BFD interface doesn't yet
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take a const buffer. */
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if (writebuf != NULL
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&& !bfd_set_section_contents (s->bfd, s->the_bfd_section,
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writebuf, offset - s->addr, len))
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return -1;
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#endif
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return len;
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}
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default:
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return -1;
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}
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}
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void
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target_bfd_xclose (struct target_ops *t, int quitting)
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{
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bfd_close (t->to_data);
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xfree (t->to_sections);
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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 *bfd)
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{
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struct target_ops *t = XZALLOC (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_xfer_partial = target_bfd_xfer_partial;
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t->to_xclose = target_bfd_xclose;
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t->to_data = bfd;
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build_target_sections_from_bfd (t, bfd);
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return t;
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}
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@ -0,0 +1,39 @@
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/* Very simple "bfd" target, for GDB, the GNU debugger.
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Copyright 2003 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef BFD_TARGET_H
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#define BFD_TARGET_H
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struct bfd;
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struct target_ops;
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/* Given an existing BFD, re-open it as a "struct target_ops". On
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close, it will also close the corresponding BFD (which is like
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freopen and fdopen). */
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struct target_ops *target_bfd_reopen (struct bfd *bfd);
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/* Map over ABFD's sections, creating corresponding entries in the
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target's section table. */
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void build_target_sections_from_bfd (struct target_ops *targ,
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struct bfd *abfd);
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#endif
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@ -868,9 +868,10 @@ extern void xmfree (void *md, void *ptr);
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"libiberty.h". */
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extern void xfree (void *);
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/* Utility macros to allocate typed memory. Avoids errors like
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``struct foo *foo = xmalloc (sizeof bar)'' and ``struct foo *foo =
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(struct foo *) xmalloc (sizeof bar)''. */
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/* Utility macros to allocate typed memory. Avoids errors like:
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struct foo *foo = xmalloc (sizeof struct bar); and memset (foo,
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sizeof (struct foo), 0). */
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#define XZALLOC(TYPE) ((TYPE*) memset (xmalloc (sizeof (TYPE)), 0, sizeof (TYPE)))
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#define XMALLOC(TYPE) ((TYPE*) xmalloc (sizeof (TYPE)))
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#define XCALLOC(NMEMB, TYPE) ((TYPE*) xcalloc ((NMEMB), sizeof (TYPE)))
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@ -280,6 +280,8 @@ struct target_ops
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char *to_doc; /* Documentation. Does not include trailing
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newline, and starts with a one-line descrip-
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tion (probably similar to to_longname). */
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/* Per-target scratch pad. */
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void *to_data;
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/* The open routine takes the rest of the parameters from the
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command, and (if successful) pushes a new target onto the
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stack. Targets should supply this routine, if only to provide
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