/* 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 (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#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"
-
-#ifndef O_BINARY
-#define O_BINARY 0
+#include "exec.h"
+#include "readline/readline.h"
+#include "gdb_assert.h"
+#include "exceptions.h"
+#include "solib.h"
+#include "filenames.h"
+#include "progspace.h"
+#include "objfiles.h"
+
+
+#ifndef O_LARGEFILE
+#define O_LARGEFILE 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;
-/* The core_fns for a core file handler that is prepared to read the core
- file currently open on core_bfd. */
+/* The core_fns for a core file handler that is prepared to read the
+ core file currently open on core_bfd. */
static struct core_fns *core_vec = NULL;
-static void core_files_info (struct target_ops *);
+/* FIXME: kettenis/20031023: Eventually this variable should
+ disappear. */
-#ifdef SOLIB_ADD
-static int solib_add_stub (PTR);
-#endif
+struct gdbarch *core_gdbarch = NULL;
+
+/* Per-core data. Currently, only the section table. Note that these
+ target sections are *not* mapped in the current address spaces' set
+ of target sections --- those should come only from pure executable
+ or shared library bfds. The core bfd sections are an
+ implementation detail of the core target, just like ptrace is for
+ unix child targets. */
+static struct target_section_table *core_data;
+
+/* True if we needed to fake the pid of the loaded core inferior. */
+static int core_has_fake_pid = 0;
+
+static void core_files_info (struct target_ops *);
static struct core_fns *sniff_core_bfd (bfd *);
-static boolean gdb_check_format (bfd *);
+static int gdb_check_format (bfd *);
static void core_open (char *, int);
-static void core_detach (char *, int);
+static void core_detach (struct target_ops *ops, char *, int);
static void core_close (int);
static void core_close_cleanup (void *ignore);
-static void get_core_registers (int);
-
-static void add_to_thread_list (bfd *, asection *, PTR);
-
-static int ignore (CORE_ADDR, char *);
-
-static int core_file_thread_alive (ptid_t tid);
+static void add_to_thread_list (bfd *, asection *, void *);
static void init_core_ops (void);
void _initialize_corelow (void);
-struct target_ops core_ops;
+static struct target_ops core_ops;
+
+/* An arbitrary identifier for the core inferior. */
+#define CORELOW_PID 1
-/* Link a new core_fns into the global core_file_fns list. Called on gdb
- startup by the _initialize routine in each core file register reader, to
- register information about each format the the reader is prepared to
- handle. */
+/* Link a new core_fns into the global core_file_fns list. Called on
+ gdb startup by the _initialize routine in each core file register
+ reader, to register information about each format the the reader is
+ prepared to 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;
/* The default function that core file handlers can use to examine a
core file BFD and decide whether or not to accept the job of
- reading the core file. */
+ reading the core file. */
int
default_core_sniffer (struct core_fns *our_fns, bfd *abfd)
/* Walk through the list of core functions to find a set that can
handle the core file open on ABFD. Default to the first one in the
list if nothing matches. Returns pointer to set that is
- selected. */
+ selected. */
static struct core_fns *
sniff_core_bfd (bfd *abfd)
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))
}
if (matches > 1)
{
- warning ("\"%s\": ambiguous core format, %d handlers match",
+ warning (_("\"%s\": ambiguous core format, %d handlers match"),
bfd_get_filename (abfd), matches);
}
else if (matches == 0)
{
- warning ("\"%s\": no core file handler recognizes format, using default",
+ warning (_("\"%s\": no core file handler "
+ "recognizes format, using default"),
bfd_get_filename (abfd));
}
if (yummy == NULL)
/* The default is to reject every core file format we see. Either
BFD has to recognize it, or we have to provide a function in the
- core file handler that recognizes it. */
+ core file handler that recognizes it. */
int
default_check_format (bfd *abfd)
return (0);
}
-/* Attempt to recognize core file formats that BFD rejects. */
+/* Attempt to recognize core file formats that BFD rejects. */
-static boolean
+static int
gdb_check_format (bfd *abfd)
{
struct core_fns *cf;
return (0);
}
-/* Discard all vestiges of any previous core file and mark data and stack
- spaces as empty. */
+/* Discard all vestiges of any previous core file and mark data and
+ stack spaces as empty. */
-/* ARGSUSED */
static void
core_close (int quitting)
{
if (core_bfd)
{
- inferior_ptid = null_ptid; /* Avoid confusion from thread stuff */
+ int pid = ptid_get_pid (inferior_ptid);
+ inferior_ptid = null_ptid; /* Avoid confusion from thread
+ stuff. */
+ exit_inferior_silent (pid);
- /* Clear out solib state while the bfd is still open. See
- comments in clear_solib in solib.c. */
-#ifdef CLEAR_SOLIB
- CLEAR_SOLIB ();
-#endif
+ /* Clear out solib state while the bfd is still open. See
+ comments in clear_solib in solib.c. */
+ clear_solib ();
+
+ xfree (core_data->sections);
+ xfree (core_data);
+ core_data = NULL;
+ core_has_fake_pid = 0;
name = bfd_get_filename (core_bfd);
- if (!bfd_close (core_bfd))
- warning ("cannot close \"%s\": %s",
- name, bfd_errmsg (bfd_get_error ()));
+ gdb_bfd_close_or_warn (core_bfd);
xfree (name);
core_bfd = NULL;
- if (core_ops.to_sections)
- {
- xfree (core_ops.to_sections);
- core_ops.to_sections = NULL;
- core_ops.to_sections_end = NULL;
- }
}
core_vec = NULL;
+ core_gdbarch = NULL;
}
static void
core_close (0/*ignored*/);
}
-#ifdef SOLIB_ADD
-/* Stub function for catch_errors around shared library hacking. FROM_TTYP
- is really an int * which points to from_tty. */
-
-static int
-solib_add_stub (PTR from_ttyp)
-{
- SOLIB_ADD (NULL, *(int *) from_ttyp, ¤t_target, auto_solib_add);
- re_enable_breakpoints_in_shlibs ();
- return 0;
-}
-#endif /* SOLIB_ADD */
-
-/* Look for sections whose names start with `.reg/' so that we can extract the
- list of threads in a core file. */
+/* Look for sections whose names start with `.reg/' so that we can
+ extract the list of threads in a core file. */
static void
-add_to_thread_list (bfd *abfd, asection *asect, PTR reg_sect_arg)
+add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg)
{
- int thread_id;
+ ptid_t ptid;
+ int core_tid;
+ int pid, lwpid;
asection *reg_sect = (asection *) reg_sect_arg;
if (strncmp (bfd_section_name (abfd, asect), ".reg/", 5) != 0)
return;
- thread_id = atoi (bfd_section_name (abfd, asect) + 5);
+ core_tid = atoi (bfd_section_name (abfd, asect) + 5);
- add_thread (pid_to_ptid (thread_id));
+ pid = bfd_core_file_pid (core_bfd);
+ if (pid == 0)
+ {
+ core_has_fake_pid = 1;
+ pid = CORELOW_PID;
+ }
+
+ lwpid = core_tid;
+
+ if (current_inferior ()->pid == 0)
+ inferior_appeared (current_inferior (), pid);
+
+ ptid = ptid_build (pid, lwpid, 0);
+
+ add_thread (ptid);
/* Warning, Will Robinson, looking at BFD private data! */
if (reg_sect != NULL
- && asect->filepos == reg_sect->filepos) /* Did we find .reg? */
- inferior_ptid = pid_to_ptid (thread_id); /* Yes, make it current */
+ && asect->filepos == reg_sect->filepos) /* Did we find .reg? */
+ inferior_ptid = ptid; /* Yes, make it current. */
}
/* This routine opens and sets up the core file bfd. */
struct cleanup *old_chain;
char *temp;
bfd *temp_bfd;
- int ontop;
int scratch_chan;
+ int flags;
target_preopen (from_tty);
if (!filename)
{
- error (core_bfd ?
- "No core file specified. (Use `detach' to stop debugging a core file.)"
- : "No core file specified.");
+ if (core_bfd)
+ error (_("No core file specified. (Use `detach' "
+ "to stop debugging a core file.)"));
+ else
+ error (_("No core file specified."));
}
filename = tilde_expand (filename);
- if (filename[0] != '/')
+ if (!IS_ABSOLUTE_PATH (filename))
{
- temp = concat (current_directory, "/", filename, NULL);
+ temp = concat (current_directory, "/",
+ filename, (char *) NULL);
xfree (filename);
filename = temp;
}
old_chain = make_cleanup (xfree, filename);
- scratch_chan = open (filename, O_BINARY | ( write_files ? O_RDWR : O_RDONLY ), 0);
+ flags = O_BINARY | O_LARGEFILE;
+ if (write_files)
+ flags |= O_RDWR;
+ else
+ flags |= O_RDONLY;
+ scratch_chan = open (filename, flags, 0);
if (scratch_chan < 0)
perror_with_name (filename);
- temp_bfd = bfd_fdopenr (filename, gnutarget, scratch_chan);
+ temp_bfd = bfd_fopen (filename, gnutarget,
+ write_files ? FOPEN_RUB : FOPEN_RB,
+ scratch_chan);
if (temp_bfd == NULL)
perror_with_name (filename);
- if (!bfd_check_format (temp_bfd, bfd_core) &&
- !gdb_check_format (temp_bfd))
+ if (!bfd_check_format (temp_bfd, bfd_core)
+ && !gdb_check_format (temp_bfd))
{
/* Do it after the err msg */
- /* 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). */
+ /* 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);
- error ("\"%s\" is not a core dump: %s",
+ 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. */
+ /* Looks semi-reasonable. Toss the old core file and work on the
+ new. */
discard_cleanups (old_chain); /* Don't free filename any more */
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 */
core_vec = sniff_core_bfd (core_bfd);
validate_files ();
+ core_data = XZALLOC (struct target_section_table);
+
/* Find the data section */
- if (build_section_table (core_bfd, &core_ops.to_sections,
- &core_ops.to_sections_end))
- error ("\"%s\": Can't find sections: %s",
+ if (build_section_table (core_bfd,
+ &core_data->sections,
+ &core_data->sections_end))
+ error (_("\"%s\": Can't find sections: %s"),
bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
- set_gdbarch_from_file (core_bfd);
+ /* If we have no exec file, try to set the architecture from the
+ core file. We don't do this unconditionally since an exec file
+ typically contains more information that helps us determine the
+ architecture than a core file. */
+ if (!exec_bfd)
+ set_gdbarch_from_file (core_bfd);
- ontop = !push_target (&core_ops);
+ push_target (&core_ops);
discard_cleanups (old_chain);
- p = bfd_core_file_failing_command (core_bfd);
- if (p)
- printf_filtered ("Core was generated by `%s'.\n", p);
+ /* Do this before acknowledging the inferior, so if
+ post_create_inferior throws (can happen easilly if you're loading
+ a core file with the wrong exec), we aren't left with threads
+ from the previous inferior. */
+ init_thread_list ();
- siggy = bfd_core_file_failing_signal (core_bfd);
- if (siggy > 0)
- /* NOTE: target_signal_from_host() converts a target signal value
- into gdb's internal signal value. Unfortunately gdb's internal
- value is called ``target_signal'' and this function got the
- name ..._from_host(). */
- printf_filtered ("Program terminated with signal %d, %s.\n", siggy,
- target_signal_to_string (target_signal_from_host (siggy)));
+ inferior_ptid = null_ptid;
+ core_has_fake_pid = 0;
- /* Build up thread list from BFD sections. */
+ /* Need to flush the register cache (and the frame cache) from a
+ previous debug session. If inferior_ptid ends up the same as the
+ last debug session --- e.g., b foo; run; gcore core1; step; gcore
+ core2; core core1; core core2 --- then there's potential for
+ get_current_regcache to return the cached regcache of the
+ previous session, and the frame cache being stale. */
+ registers_changed ();
- init_thread_list ();
+ /* Build up thread list from BFD sections, and possibly set the
+ current thread to the .reg/NN section matching the .reg
+ section. */
bfd_map_over_sections (core_bfd, add_to_thread_list,
bfd_get_section_by_name (core_bfd, ".reg"));
- if (ontop)
+ if (ptid_equal (inferior_ptid, null_ptid))
{
- /* Fetch all registers from core file. */
- target_fetch_registers (-1);
+ /* Either we found no .reg/NN section, and hence we have a
+ non-threaded core (single-threaded, from gdb's perspective),
+ or for some reason add_to_thread_list couldn't determine
+ which was the "main" thread. The latter case shouldn't
+ usually happen, but we're dealing with input here, which can
+ always be broken in different ways. */
+ struct thread_info *thread = first_thread_of_process (-1);
+
+ if (thread == NULL)
+ {
+ inferior_appeared (current_inferior (), CORELOW_PID);
+ inferior_ptid = pid_to_ptid (CORELOW_PID);
+ add_thread_silent (inferior_ptid);
+ }
+ else
+ switch_to_thread (thread->ptid);
+ }
- /* Add symbols and section mappings for any shared libraries. */
-#ifdef SOLIB_ADD
- catch_errors (solib_add_stub, &from_tty, (char *) 0,
- RETURN_MASK_ALL);
-#endif
+ post_create_inferior (&core_ops, from_tty);
- /* Now, set up the frame cache, and print the top of stack. */
- flush_cached_frames ();
- select_frame (get_current_frame (), 0);
- print_stack_frame (selected_frame,
- frame_relative_level (selected_frame), 1);
- }
- else
+ /* Now go through the target stack looking for threads since there
+ may be a thread_stratum target loaded on top of target core by
+ now. The layer above should claim threads found in the BFD
+ sections. */
+ target_find_new_threads ();
+
+ p = bfd_core_file_failing_command (core_bfd);
+ if (p)
+ printf_filtered (_("Core was generated by `%s'.\n"), p);
+
+ siggy = bfd_core_file_failing_signal (core_bfd);
+ if (siggy > 0)
{
- warning (
- "you won't be able to access this core file until you terminate\n\
-your %s; do ``info files''", target_longname);
+ /* NOTE: target_signal_from_host() converts a target signal
+ value into gdb's internal signal value. Unfortunately gdb's
+ internal value is called ``target_signal'' and this function
+ got the name ..._from_host(). */
+ enum target_signal sig = (core_gdbarch != NULL
+ ? gdbarch_target_signal_from_host (core_gdbarch,
+ siggy)
+ : target_signal_from_host (siggy));
+
+ printf_filtered (_("Program terminated with signal %d, %s.\n"),
+ siggy, target_signal_to_string (sig));
}
+
+ /* Fetch all registers from core file. */
+ target_fetch_registers (get_current_regcache (), -1);
+
+ /* Now, set up the frame cache, and print the top of stack. */
+ reinit_frame_cache ();
+ print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC);
}
static void
-core_detach (char *args, int from_tty)
+core_detach (struct target_ops *ops, char *args, int from_tty)
{
if (args)
- error ("Too many arguments");
- unpush_target (&core_ops);
+ error (_("Too many arguments"));
+ unpush_target (ops);
reinit_frame_cache ();
if (from_tty)
- printf_filtered ("No core file now.\n");
+ 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.
- If inferior_ptid is zero, do the single-threaded thing: look for a
- section named NAME. If inferior_ptid is non-zero, do the
- multi-threaded thing: look for a section named "NAME/PID", where
- PID is the shortest ASCII decimal representation of inferior_ptid.
+ If inferior_ptid's lwp member is zero, do the single-threaded
+ thing: look for a section named NAME. If inferior_ptid's lwp
+ member is non-zero, do the multi-threaded thing: look for a section
+ named "NAME/LWP", where LWP is the shortest ASCII decimal
+ representation of inferior_ptid's lwp member.
HUMAN_NAME is a human-readable name for the kind of registers the
NAME section contains, for use in error messages.
If REQUIRED is non-zero, print an error if the core file doesn't
- have a section by the appropriate name. Otherwise, just do nothing. */
+ have a section by the appropriate name. Otherwise, just do
+ nothing. */
static void
-get_core_register_section (char *name,
+get_core_register_section (struct regcache *regcache,
+ const char *name,
int which,
- char *human_name,
+ const char *human_name,
int required)
{
- char section_name[100];
- sec_ptr section;
+ static char *section_name = NULL;
+ struct bfd_section *section;
bfd_size_type size;
char *contents;
- if (PIDGET (inferior_ptid))
- sprintf (section_name, "%s/%d", name, PIDGET (inferior_ptid));
+ xfree (section_name);
+
+ if (ptid_get_lwp (inferior_ptid))
+ section_name = xstrprintf ("%s/%ld", name,
+ ptid_get_lwp (inferior_ptid));
else
- strcpy (section_name, name);
+ section_name = xstrdup (name);
section = bfd_get_section_by_name (core_bfd, section_name);
if (! section)
{
if (required)
- warning ("Couldn't find %s registers in core file.\n", human_name);
+ warning (_("Couldn't find %s registers in core file."),
+ human_name);
return;
}
if (! bfd_get_section_contents (core_bfd, section, contents,
(file_ptr) 0, size))
{
- warning ("Couldn't read %s registers from `%s' section in core file.\n",
+ warning (_("Couldn't read %s registers from `%s' section in core file."),
human_name, name);
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."),
+ human_name);
+ return;
+ }
+
+ regset->supply_regset (regset, regcache, -1, contents, size);
+ return;
+ }
+
+ gdb_assert (core_vec);
+ core_vec->core_read_registers (regcache, contents, size, which,
((CORE_ADDR)
bfd_section_vma (core_bfd, section)));
}
/* Get the registers out of a core file. This is the machine-
independent part. Fetch_core_registers is the machine-dependent
- part, typically implemented in the xm-file for each architecture. */
+ part, typically implemented in the xm-file for each
+ architecture. */
/* We just get all the registers, so we don't use regno. */
-/* ARGSUSED */
static void
-get_core_registers (int regno)
+get_core_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
- int status;
+ struct core_regset_section *sect_list;
+ int i;
- 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");
return;
}
- get_core_register_section (".reg", 0, "general-purpose", 1);
- get_core_register_section (".reg2", 2, "floating-point", 0);
- get_core_register_section (".reg-xfp", 3, "extended floating-point", 0);
+ sect_list = gdbarch_core_regset_sections (get_regcache_arch (regcache));
+ if (sect_list)
+ while (sect_list->sect_name != NULL)
+ {
+ if (strcmp (sect_list->sect_name, ".reg") == 0)
+ get_core_register_section (regcache, sect_list->sect_name,
+ 0, sect_list->human_name, 1);
+ else if (strcmp (sect_list->sect_name, ".reg2") == 0)
+ get_core_register_section (regcache, sect_list->sect_name,
+ 2, sect_list->human_name, 0);
+ else
+ get_core_register_section (regcache, sect_list->sect_name,
+ 3, sect_list->human_name, 0);
+
+ sect_list++;
+ }
+
+ else
+ {
+ get_core_register_section (regcache,
+ ".reg", 0, "general-purpose", 1);
+ get_core_register_section (regcache,
+ ".reg2", 2, "floating-point", 0);
+ }
- registers_fetched ();
+ /* Supply dummy value for all registers not found in the core. */
+ for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
+ if (!regcache_valid_p (regcache, i))
+ regcache_raw_supply (regcache, i, NULL);
}
static void
core_files_info (struct target_ops *t)
{
- print_section_info (t, core_bfd);
+ print_section_info (core_data, core_bfd);
}
+\f
+struct spuid_list
+{
+ gdb_byte *buf;
+ ULONGEST offset;
+ LONGEST len;
+ ULONGEST pos;
+ ULONGEST written;
+};
+
+static void
+add_to_spuid_list (bfd *abfd, asection *asect, void *list_p)
+{
+ struct spuid_list *list = list_p;
+ enum bfd_endian byte_order
+ = bfd_big_endian (abfd) ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
+ int fd, pos = 0;
+
+ sscanf (bfd_section_name (abfd, asect), "SPU/%d/regs%n", &fd, &pos);
+ if (pos == 0)
+ return;
+
+ if (list->pos >= list->offset && list->pos + 4 <= list->offset + list->len)
+ {
+ store_unsigned_integer (list->buf + list->pos - list->offset,
+ 4, byte_order, fd);
+ list->written += 4;
+ }
+ list->pos += 4;
+}
+
+static LONGEST
+core_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:
+ return section_table_xfer_memory_partial (readbuf, writebuf,
+ offset, len,
+ core_data->sections,
+ core_data->sections_end,
+ NULL);
+
+ 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;
+
+ 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;
+
+ 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;
+
+ case TARGET_OBJECT_LIBRARIES:
+ if (core_gdbarch
+ && gdbarch_core_xfer_shared_libraries_p (core_gdbarch))
+ {
+ if (writebuf)
+ return -1;
+ return
+ gdbarch_core_xfer_shared_libraries (core_gdbarch,
+ readbuf, offset, len);
+ }
+ /* FALL THROUGH */
+
+ case TARGET_OBJECT_SPU:
+ if (readbuf && annex)
+ {
+ /* When the SPU contexts are stored in a core file, BFD
+ represents this with a fake section called
+ "SPU/<annex>". */
+
+ struct bfd_section *section;
+ bfd_size_type size;
+ char sectionstr[100];
+
+ xsnprintf (sectionstr, sizeof sectionstr, "SPU/%s", annex);
+
+ section = bfd_get_section_by_name (core_bfd, sectionstr);
+ 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 SPU section in core file."));
+ return -1;
+ }
+
+ return size;
+ }
+ else if (readbuf)
+ {
+ /* NULL annex requests list of all present spuids. */
+ struct spuid_list list;
+
+ list.buf = readbuf;
+ list.offset = offset;
+ list.len = len;
+ list.pos = 0;
+ list.written = 0;
+ bfd_map_over_sections (core_bfd, add_to_spuid_list, &list);
+ return list.written;
+ }
+ 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). */
+ `gdb internal error' (since generic_mourn calls
+ breakpoint_init_inferior). */
static int
-ignore (CORE_ADDR addr, char *contents)
+ignore (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt)
{
return 0;
}
behaviour.
*/
static int
-core_file_thread_alive (ptid_t tid)
+core_thread_alive (struct target_ops *ops, ptid_t ptid)
{
return 1;
}
+/* Ask the current architecture what it knows about this core file.
+ That will be used, in turn, to pick a better architecture. This
+ wrapper could be avoided if targets got a chance to specialize
+ core_ops. */
+
+static const struct target_desc *
+core_read_description (struct target_ops *target)
+{
+ if (core_gdbarch && gdbarch_core_read_description_p (core_gdbarch))
+ return gdbarch_core_read_description (core_gdbarch,
+ target, core_bfd);
+
+ return NULL;
+}
+
+static char *
+core_pid_to_str (struct target_ops *ops, ptid_t ptid)
+{
+ static char buf[64];
+ int pid;
+
+ /* The preferred way is to have a gdbarch/OS specific
+ implementation. */
+ if (core_gdbarch
+ && gdbarch_core_pid_to_str_p (core_gdbarch))
+ return gdbarch_core_pid_to_str (core_gdbarch, ptid);
+
+ /* Otherwise, if we don't have one, we'll just fallback to
+ "process", with normal_pid_to_str. */
+
+ /* Try the LWPID field first. */
+ pid = ptid_get_lwp (ptid);
+ if (pid != 0)
+ return normal_pid_to_str (pid_to_ptid (pid));
+
+ /* Otherwise, this isn't a "threaded" core -- use the PID field, but
+ only if it isn't a fake PID. */
+ if (!core_has_fake_pid)
+ return normal_pid_to_str (ptid);
+
+ /* No luck. We simply don't have a valid PID to print. */
+ xsnprintf (buf, sizeof buf, "<main task>");
+ return buf;
+}
+
+static int
+core_has_memory (struct target_ops *ops)
+{
+ return (core_bfd != NULL);
+}
+
+static int
+core_has_stack (struct target_ops *ops)
+{
+ return (core_bfd != NULL);
+}
+
+static int
+core_has_registers (struct target_ops *ops)
+{
+ return (core_bfd != NULL);
+}
+
/* Fill in core_ops with its defined operations and properties. */
static void
core_ops.to_open = core_open;
core_ops.to_close = core_close;
core_ops.to_attach = find_default_attach;
- core_ops.to_require_attach = find_default_require_attach;
core_ops.to_detach = core_detach;
- core_ops.to_require_detach = find_default_require_detach;
core_ops.to_fetch_registers = get_core_registers;
- core_ops.to_xfer_memory = xfer_memory;
+ core_ops.to_xfer_partial = core_xfer_partial;
core_ops.to_files_info = core_files_info;
core_ops.to_insert_breakpoint = ignore;
core_ops.to_remove_breakpoint = ignore;
core_ops.to_create_inferior = find_default_create_inferior;
- core_ops.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior;
- core_ops.to_thread_alive = core_file_thread_alive;
- core_ops.to_stratum = core_stratum;
- core_ops.to_has_memory = 1;
- core_ops.to_has_stack = 1;
- core_ops.to_has_registers = 1;
+ core_ops.to_thread_alive = core_thread_alive;
+ core_ops.to_read_description = core_read_description;
+ core_ops.to_pid_to_str = core_pid_to_str;
+ core_ops.to_stratum = process_stratum;
+ 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_magic = OPS_MAGIC;
-}
-/* non-zero if we should not do the add_target call in
- _initialize_corelow; not initialized (i.e., bss) so that
- the target can initialize it (i.e., data) if appropriate.
- This needs to be set at compile time because we don't know
- for sure whether the target's initialize routine is called
- before us or after us. */
-int coreops_suppress_target;
+ if (core_target)
+ internal_error (__FILE__, __LINE__,
+ _("init_core_ops: core target already exists (\"%s\")."),
+ core_target->to_longname);
+ core_target = &core_ops;
+}
void
_initialize_corelow (void)
{
init_core_ops ();
- if (!coreops_suppress_target)
- add_target (&core_ops);
+ add_target (&core_ops);
}
projects / deliverable / binutils-gdb.git / blobdiff