/* Core dump and executable file functions below target vector, for GDB.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001, 2003, 2004 Free Software Foundation,
+ Inc.
This file is part of GDB.
Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include "arch-utils.h"
#include "gdb_string.h"
#include <errno.h>
#include <signal.h>
#include "gdbcore.h"
#include "gdbthread.h"
#include "regcache.h"
+#include "regset.h"
#include "symfile.h"
-#include <readline/readline.h>
+#include "exec.h"
+#include "readline/readline.h"
+#include "observer.h"
+#include "gdb_assert.h"
#ifndef O_BINARY
#define O_BINARY 0
#endif
-/* List of all available core_fns. On gdb startup, each core file register
- reader calls add_core_fns() to register information on each core format it
- is prepared to read. */
+/* List of all available core_fns. On gdb startup, each core file
+ register reader calls deprecated_add_core_fns() to register
+ information on each core format it is prepared to read. */
static struct core_fns *core_file_fns = NULL;
static struct core_fns *core_vec = NULL;
+/* FIXME: kettenis/20031023: Eventually this variable should
+ disappear. */
+
+struct gdbarch *core_gdbarch = NULL;
+
static void core_files_info (struct target_ops *);
#ifdef SOLIB_ADD
handle. */
void
-add_core_fns (struct core_fns *cf)
+deprecated_add_core_fns (struct core_fns *cf)
{
cf->next = core_file_fns;
core_file_fns = cf;
struct core_fns *yummy = NULL;
int matches = 0;;
+ /* Don't sniff if we have support for register sets in CORE_GDBARCH. */
+ if (core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch))
+ return NULL;
+
for (cf = core_file_fns; cf != NULL; cf = cf->next)
{
if (cf->core_sniffer (cf, abfd))
/* Discard all vestiges of any previous core file and mark data and stack
spaces as empty. */
-/* ARGSUSED */
static void
core_close (int quitting)
{
}
}
core_vec = NULL;
+ core_gdbarch = NULL;
}
static void
core_bfd = temp_bfd;
old_chain = make_cleanup (core_close_cleanup, 0 /*ignore*/);
+ /* FIXME: kettenis/20031023: This is very dangerous. The
+ CORE_GDBARCH that results from this call may very well be
+ different from CURRENT_GDBARCH. However, its methods may only
+ work if it is selected as the current architecture, because they
+ rely on swapped data (see gdbarch.c). We should get rid of that
+ swapped data. */
+ core_gdbarch = gdbarch_from_bfd (core_bfd);
+
/* Find a suitable core file handler to munch on core_bfd */
core_vec = sniff_core_bfd (core_bfd);
ontop = !push_target (&core_ops);
discard_cleanups (old_chain);
+ /* This is done first, before anything has a chance to query the
+ inferior for information such as symbols. */
+ observer_notify_inferior_created (&core_ops, from_tty);
+
p = bfd_core_file_failing_command (core_bfd);
if (p)
printf_filtered ("Core was generated by `%s'.\n", p);
/* Now, set up the frame cache, and print the top of stack. */
flush_cached_frames ();
select_frame (get_current_frame ());
- print_stack_frame (deprecated_selected_frame,
- frame_relative_level (deprecated_selected_frame), 1);
+ print_stack_frame (get_selected_frame (), 1, SRC_AND_LOC);
}
else
{
int required)
{
char section_name[100];
- sec_ptr section;
+ struct bfd_section *section;
bfd_size_type size;
char *contents;
return;
}
- core_vec->core_read_registers (contents, size, which,
+ if (core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch))
+ {
+ const struct regset *regset;
+
+ regset = gdbarch_regset_from_core_section (core_gdbarch, name, size);
+ if (regset == NULL)
+ {
+ if (required)
+ warning ("Couldn't recognize %s registers in core file.\n",
+ human_name);
+ return;
+ }
+
+ regset->supply_regset (regset, current_regcache, -1, contents, size);
+ return;
+ }
+
+ gdb_assert (core_vec);
+ core_vec->core_read_registers (contents, size, which,
((CORE_ADDR)
bfd_section_vma (core_bfd, section)));
}
/* We just get all the registers, so we don't use regno. */
-/* ARGSUSED */
static void
get_core_registers (int regno)
{
int status;
- if (core_vec == NULL
- || core_vec->core_read_registers == NULL)
+ if (!(core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch))
+ && (core_vec == NULL || core_vec->core_read_registers == NULL))
{
fprintf_filtered (gdb_stderr,
"Can't fetch registers from this type of core file\n");
{
print_section_info (t, core_bfd);
}
+\f
+static LONGEST
+core_xfer_partial (struct target_ops *ops, enum target_object object,
+ const char *annex, void *readbuf,
+ const void *writebuf, ULONGEST offset, LONGEST len)
+{
+ switch (object)
+ {
+ case TARGET_OBJECT_MEMORY:
+ if (readbuf)
+ return (*ops->to_xfer_memory) (offset, readbuf, len, 0/*write*/,
+ NULL, ops);
+ if (writebuf)
+ return (*ops->to_xfer_memory) (offset, readbuf, len, 1/*write*/,
+ NULL, ops);
+ return -1;
+
+ case TARGET_OBJECT_AUXV:
+ if (readbuf)
+ {
+ /* When the aux vector is stored in core file, BFD
+ represents this with a fake section called ".auxv". */
+
+ struct bfd_section *section;
+ bfd_size_type size;
+ char *contents;
+
+ section = bfd_get_section_by_name (core_bfd, ".auxv");
+ if (section == NULL)
+ return -1;
+
+ size = bfd_section_size (core_bfd, section);
+ if (offset >= size)
+ return 0;
+ size -= offset;
+ if (size > len)
+ size = len;
+ if (size > 0
+ && !bfd_get_section_contents (core_bfd, section, readbuf,
+ (file_ptr) offset, size))
+ {
+ warning ("Couldn't read NT_AUXV note in core file.");
+ return -1;
+ }
+
+ return size;
+ }
+ return -1;
+
+ case TARGET_OBJECT_WCOOKIE:
+ if (readbuf)
+ {
+ /* When the StackGhost cookie is stored in core file, BFD
+ represents this with a fake section called ".wcookie". */
+
+ struct bfd_section *section;
+ bfd_size_type size;
+ char *contents;
+
+ section = bfd_get_section_by_name (core_bfd, ".wcookie");
+ if (section == NULL)
+ return -1;
+
+ size = bfd_section_size (core_bfd, section);
+ if (offset >= size)
+ return 0;
+ size -= offset;
+ if (size > len)
+ size = len;
+ if (size > 0
+ && !bfd_get_section_contents (core_bfd, section, readbuf,
+ (file_ptr) offset, size))
+ {
+ warning ("Couldn't read StackGhost cookie in core file.");
+ return -1;
+ }
+
+ return size;
+ }
+ return -1;
+
+ default:
+ if (ops->beneath != NULL)
+ return ops->beneath->to_xfer_partial (ops->beneath, object, annex,
+ readbuf, writebuf, offset, len);
+ return -1;
+ }
+}
+
\f
/* If mourn is being called in all the right places, this could be say
`gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */
core_ops.to_attach = find_default_attach;
core_ops.to_detach = core_detach;
core_ops.to_fetch_registers = get_core_registers;
+ core_ops.to_xfer_partial = core_xfer_partial;
core_ops.to_xfer_memory = xfer_memory;
core_ops.to_files_info = core_files_info;
core_ops.to_insert_breakpoint = ignore;
projects / binutils-gdb.git / blobdiff