/* Core dump and executable file functions below target vector, for GDB.
- Copyright (C) 1986-1987, 1989, 1991-2001, 2003-2012 Free Software
- Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include "filenames.h"
#include "progspace.h"
#include "objfiles.h"
+#include "gdb_bfd.h"
+#include "completer.h"
+#include "filestuff.h"
#ifndef O_LARGEFILE
#define O_LARGEFILE 0
static void core_detach (struct target_ops *ops, char *, int);
-static void core_close (int);
+static void core_close (void);
static void core_close_cleanup (void *ignore);
stack spaces as empty. */
static void
-core_close (int quitting)
+core_close (void)
{
- char *name;
-
if (core_bfd)
{
int pid = ptid_get_pid (inferior_ptid);
core_data = NULL;
}
- name = bfd_get_filename (core_bfd);
- gdb_bfd_close_or_warn (core_bfd);
- xfree (name);
+ gdb_bfd_unref (core_bfd);
core_bfd = NULL;
}
core_vec = NULL;
static void
core_close_cleanup (void *ignore)
{
- core_close (0/*ignored*/);
+ core_close ();
}
/* Look for sections whose names start with `.reg/' so that we can
flags |= O_RDWR;
else
flags |= O_RDONLY;
- scratch_chan = open (filename, flags, 0);
+ scratch_chan = gdb_open_cloexec (filename, flags, 0);
if (scratch_chan < 0)
perror_with_name (filename);
- temp_bfd = bfd_fopen (filename, gnutarget,
- write_files ? FOPEN_RUB : FOPEN_RB,
- scratch_chan);
+ temp_bfd = gdb_bfd_fopen (filename, gnutarget,
+ write_files ? FOPEN_RUB : FOPEN_RB,
+ scratch_chan);
if (temp_bfd == NULL)
perror_with_name (filename);
/* FIXME: should be checking for errors from bfd_close (for one
thing, on error it does not free all the storage associated
with the bfd). */
- make_cleanup_bfd_close (temp_bfd);
+ make_cleanup_bfd_unref (temp_bfd);
error (_("\"%s\" is not a core dump: %s"),
filename, bfd_errmsg (bfd_get_error ()));
}
/* Looks semi-reasonable. Toss the old core file and work on the
new. */
- discard_cleanups (old_chain); /* Don't free filename any more */
+ do_cleanups (old_chain);
unpush_target (&core_ops);
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 */
siggy = bfd_core_file_failing_signal (core_bfd);
if (siggy > 0)
{
- /* NOTE: gdb_signal_from_host() converts a target signal
- value into gdb's internal signal value. Unfortunately gdb's
- internal value is called ``gdb_signal'' and this function
- got the name ..._from_host(). */
+ /* If we don't have a CORE_GDBARCH to work with, assume a native
+ core (map gdb_signal from host signals). If we do have
+ CORE_GDBARCH to work with, but no gdb_signal_from_target
+ implementation for that gdbarch, as a fallback measure,
+ assume the host signal mapping. It'll be correct for native
+ cores, but most likely incorrect for cross-cores. */
enum gdb_signal sig = (core_gdbarch != NULL
- ? gdbarch_gdb_signal_from_host (core_gdbarch,
- siggy)
- : gdb_signal_from_host (siggy));
+ && gdbarch_gdb_signal_from_target_p (core_gdbarch)
+ ? gdbarch_gdb_signal_from_target (core_gdbarch,
+ siggy)
+ : gdb_signal_from_host (siggy));
printf_filtered (_("Program terminated with signal %d, %s.\n"),
siggy, gdb_signal_to_string (sig));
printf_filtered (_("No core file now.\n"));
}
-#ifdef DEPRECATED_IBM6000_TARGET
-
-/* Resize the core memory's section table, by NUM_ADDED. Returns a
- pointer into the first new slot. This will not be necessary when
- the rs6000 target is converted to use the standard solib
- framework. */
-
-struct target_section *
-deprecated_core_resize_section_table (int num_added)
-{
- int old_count;
-
- old_count = resize_section_table (core_data, num_added);
- return core_data->sections + old_count;
-}
-
-#endif
-
/* Try to retrieve registers from a section in core_bfd, and supply
them to core_vec->core_read_registers, as the register set numbered
WHICH.
list->pos += 4;
}
+/* Read siginfo data from the core, if possible. Returns -1 on
+ failure. Otherwise, returns the number of bytes read. ABFD is the
+ core file's BFD; READBUF, OFFSET, and LEN are all as specified by
+ the to_xfer_partial interface. */
+
+static LONGEST
+get_core_siginfo (bfd *abfd, gdb_byte *readbuf, ULONGEST offset, LONGEST len)
+{
+ asection *section;
+ char *section_name;
+ const char *name = ".note.linuxcore.siginfo";
+
+ if (ptid_get_lwp (inferior_ptid))
+ section_name = xstrprintf ("%s/%ld", name,
+ ptid_get_lwp (inferior_ptid));
+ else
+ section_name = xstrdup (name);
+
+ section = bfd_get_section_by_name (abfd, section_name);
+ xfree (section_name);
+ if (section == NULL)
+ return -1;
+
+ if (!bfd_get_section_contents (abfd, section, readbuf, offset, len))
+ return -1;
+
+ return len;
+}
+
static LONGEST
core_xfer_partial (struct target_ops *ops, enum target_object object,
const char *annex, gdb_byte *readbuf,
}
/* FALL THROUGH */
+ case TARGET_OBJECT_LIBRARIES_AIX:
+ if (core_gdbarch
+ && gdbarch_core_xfer_shared_libraries_aix_p (core_gdbarch))
+ {
+ if (writebuf)
+ return -1;
+ return
+ gdbarch_core_xfer_shared_libraries_aix (core_gdbarch,
+ readbuf, offset, len);
+ }
+ /* FALL THROUGH */
+
case TARGET_OBJECT_SPU:
if (readbuf && annex)
{
}
return -1;
+ case TARGET_OBJECT_SIGNAL_INFO:
+ if (readbuf)
+ return get_core_siginfo (core_bfd, readbuf, offset, len);
+ return -1;
+
default:
if (ops->beneath != NULL)
return ops->beneath->to_xfer_partial (ops->beneath, object,
return (core_bfd != NULL);
}
+/* Implement the to_info_proc method. */
+
+static void
+core_info_proc (struct target_ops *ops, char *args, enum info_proc_what request)
+{
+ struct gdbarch *gdbarch = get_current_arch ();
+
+ /* Since this is the core file target, call the 'core_info_proc'
+ method on gdbarch, not 'info_proc'. */
+ if (gdbarch_core_info_proc_p (gdbarch))
+ gdbarch_core_info_proc (gdbarch, args, request);
+}
+
/* Fill in core_ops with its defined operations and properties. */
static void
core_ops.to_has_memory = core_has_memory;
core_ops.to_has_stack = core_has_stack;
core_ops.to_has_registers = core_has_registers;
+ core_ops.to_info_proc = core_info_proc;
core_ops.to_magic = OPS_MAGIC;
if (core_target)
{
init_core_ops ();
- add_target (&core_ops);
+ add_target_with_completer (&core_ops, filename_completer);
}
projects / deliverable / binutils-gdb.git / blobdiff