/* Core dump and executable file functions below target vector, for GDB.
- Copyright 1986, 87, 89, 91, 92, 93, 94, 95, 96, 97, 1998
+
+ Copyright (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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 <fcntl.h>
-#include <unistd.h>
+#ifdef HAVE_SYS_FILE_H
+#include <sys/file.h> /* needed for F_OK and friends */
+#endif
#include "frame.h" /* required by inferior.h */
#include "inferior.h"
#include "symtab.h"
#include "target.h"
#include "gdbcore.h"
#include "gdbthread.h"
+#include "regcache.h"
+#include "regset.h"
+#include "symfile.h"
+#include "exec.h"
+#include "readline/readline.h"
+#include "gdb_assert.h"
+#include "exceptions.h"
+#include "solib.h"
+#include "filenames.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;
-static void core_files_info PARAMS ((struct target_ops *));
+/* The core_fns for a core file handler that is prepared to read the core
+ file currently open on core_bfd. */
-#ifdef SOLIB_ADD
-static int solib_add_stub PARAMS ((PTR));
-#endif
+static struct core_fns *core_vec = NULL;
+
+/* FIXME: kettenis/20031023: Eventually this variable should
+ disappear. */
+
+struct gdbarch *core_gdbarch = NULL;
-static void core_open PARAMS ((char *, int));
+static void core_files_info (struct target_ops *);
-static void core_detach PARAMS ((char *, int));
+static struct core_fns *sniff_core_bfd (bfd *);
-static void core_close PARAMS ((int));
+static int gdb_check_format (bfd *);
-static void get_core_registers PARAMS ((int));
+static void core_open (char *, int);
-static void add_to_thread_list PARAMS ((bfd *, asection *, PTR));
+static void core_detach (struct target_ops *ops, char *, int);
-static int ignore PARAMS ((CORE_ADDR, char *));
+static void core_close (int);
-static char *core_file_to_sym_file PARAMS ((char *));
+static void core_close_cleanup (void *ignore);
-static int core_file_thread_alive PARAMS ((int tid));
+static void get_core_registers (struct regcache *, int);
-static void init_core_ops PARAMS ((void));
+static void add_to_thread_list (bfd *, asection *, void *);
-void _initialize_corelow PARAMS ((void));
+static int core_file_thread_alive (ptid_t tid);
+
+static void init_core_ops (void);
+
+void _initialize_corelow (void);
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. */
void
-add_core_fns (cf)
- 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. */
+
+int
+default_core_sniffer (struct core_fns *our_fns, bfd *abfd)
+{
+ int result;
+
+ result = (bfd_get_flavour (abfd) == our_fns -> core_flavour);
+ return (result);
+}
+
+/* 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. */
+
+static struct core_fns *
+sniff_core_bfd (bfd *abfd)
+{
+ struct core_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))
+ {
+ yummy = cf;
+ matches++;
+ }
+ }
+ if (matches > 1)
+ {
+ 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"),
+ bfd_get_filename (abfd));
+ }
+ if (yummy == NULL)
+ {
+ yummy = core_file_fns;
+ }
+ return (yummy);
+}
+
+/* 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. */
+
+int
+default_check_format (bfd *abfd)
+{
+ return (0);
+}
+
+/* Attempt to recognize core file formats that BFD rejects. */
+
+static int
+gdb_check_format (bfd *abfd)
+{
+ struct core_fns *cf;
+
+ for (cf = core_file_fns; cf != NULL; cf = cf->next)
+ {
+ if (cf->check_format (abfd))
+ {
+ return (1);
+ }
+ }
+ return (0);
+}
/* Discard all vestiges of any previous core file and mark data and stack
spaces as empty. */
-/* ARGSUSED */
static void
-core_close (quitting)
- int quitting;
+core_close (int quitting)
{
char *name;
if (core_bfd)
{
- inferior_pid = 0; /* Avoid confusion from thread stuff */
+ inferior_ptid = null_ptid; /* Avoid confusion from thread stuff */
+ delete_inferior_silent (CORELOW_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_solib ();
name = bfd_get_filename (core_bfd);
if (!bfd_close (core_bfd))
- warning ("cannot close \"%s\": %s",
+ warning (_("cannot close \"%s\": %s"),
name, bfd_errmsg (bfd_get_error ()));
- free (name);
+ xfree (name);
core_bfd = NULL;
if (core_ops.to_sections)
{
- free ((PTR) 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;
}
-#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 (from_ttyp)
- PTR from_ttyp;
+static void
+core_close_cleanup (void *ignore)
{
- SOLIB_ADD (NULL, *(int *) from_ttyp, ¤t_target);
- re_enable_breakpoints_in_shlibs ();
- return 0;
+ core_close (0/*ignored*/);
}
-#endif /* SOLIB_ADD */
/* 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 (abfd, asect, reg_sect_arg)
- bfd *abfd;
- asection *asect;
- PTR reg_sect_arg;
+add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg)
{
+ ptid_t ptid;
int thread_id;
asection *reg_sect = (asection *) reg_sect_arg;
thread_id = atoi (bfd_section_name (abfd, asect) + 5);
- add_thread (thread_id);
+ ptid = ptid_build (ptid_get_pid (inferior_ptid), thread_id, 0);
+
+ if (ptid_get_lwp (inferior_ptid) == 0)
+ /* The main thread has already been added before getting here, and
+ this is the first time we hear about a thread id. Assume this
+ is the main thread. */
+ thread_change_ptid (inferior_ptid, ptid);
+ else
+ /* Nope, really a new thread. */
+ 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_pid = thread_id; /* Yes, make it current */
+ inferior_ptid = ptid; /* Yes, make it current */
}
/* This routine opens and sets up the core file bfd. */
static void
-core_open (filename, from_tty)
- char *filename;
- int from_tty;
+core_open (char *filename, int from_tty)
{
const char *p;
int siggy;
struct cleanup *old_chain;
char *temp;
bfd *temp_bfd;
- int ontop;
int scratch_chan;
+ int flags;
+ int corelow_pid = CORELOW_PID;
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);
- free (filename);
+ temp = concat (current_directory, "/", filename, (char *)NULL);
+ xfree (filename);
filename = temp;
}
- old_chain = make_cleanup (free, filename);
+ old_chain = make_cleanup (xfree, filename);
- scratch_chan = open (filename, 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))
+ 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). */
- make_cleanup ((make_cleanup_func) bfd_close, temp_bfd);
- error ("\"%s\" is not a core dump: %s",
+ make_cleanup_bfd_close (temp_bfd);
+ error (_("\"%s\" is not a core dump: %s"),
filename, bfd_errmsg (bfd_get_error ()));
}
discard_cleanups (old_chain); /* Don't free filename any more */
unpush_target (&core_ops);
core_bfd = temp_bfd;
- old_chain = make_cleanup ((make_cleanup_func) core_close, core_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 ();
/* 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",
+ error (_("\"%s\": Can't find sections: %s"),
bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
- ontop = !push_target (&core_ops);
+ /* 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);
+
+ 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);
+ add_inferior_silent (corelow_pid);
- siggy = bfd_core_file_failing_signal (core_bfd);
- if (siggy > 0)
- printf_filtered ("Program terminated with signal %d, %s.\n", siggy,
- safe_strsignal (siggy));
+ /* 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 ();
- /* Build up thread list from BFD sections. */
+ /* Set INFERIOR_PTID early, so an upper layer can rely on it being
+ set while in the target_find_new_threads call below. */
+ inferior_ptid = pid_to_ptid (corelow_pid);
- init_thread_list ();
+ /* Assume ST --- Add a main task. We'll later detect when we go
+ from ST to MT. */
+ add_thread_silent (inferior_ptid);
+
+ /* This is done first, before anything has a chance to query the
+ inferior for information such as symbols. */
+ post_create_inferior (&core_ops, from_tty);
+
+ /* 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)
- {
- /* Fetch all registers from core file. */
- target_fetch_registers (-1);
+ /* 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 ();
- /* 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
+ 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 (), 0);
- print_stack_frame (selected_frame, selected_frame_level, 1);
- }
- else
- {
- warning (
- "you won't be able to access this core file until you terminate\n\
-your %s; do ``info files''", target_longname);
- }
+ 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 (
+ gdbarch_target_signal_from_host (core_gdbarch, siggy)));
+
+ /* 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 (args, from_tty)
- 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"));
}
-/* 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. */
-/* We just get all the registers, so we don't use regno. */
+/* 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.
-/* ARGSUSED */
-static void
-get_core_registers (regno)
- int regno;
-{
- sec_ptr reg_sec;
- unsigned size;
- char *the_regs;
- char secname[30];
- enum bfd_flavour our_flavour = bfd_get_flavour (core_bfd);
- struct core_fns *cf = NULL;
-
- if (core_file_fns == NULL)
- {
- fprintf_filtered (gdb_stderr,
- "Can't fetch registers from this type of core file\n");
- return;
- }
+ 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.
- /* Thread support. If inferior_pid is non-zero, then we have found a core
- file with threads (or multiple processes). In that case, we need to
- use the appropriate register section, else we just use `.reg'. */
+ HUMAN_NAME is a human-readable name for the kind of registers the
+ NAME section contains, for use in error messages.
- /* XXX - same thing needs to be done for floating-point (.reg2) sections. */
+ 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. */
- if (inferior_pid)
- sprintf (secname, ".reg/%d", inferior_pid);
+static void
+get_core_register_section (struct regcache *regcache,
+ char *name,
+ int which,
+ char *human_name,
+ int required)
+{
+ static char *section_name = NULL;
+ struct bfd_section *section;
+ bfd_size_type size;
+ char *contents;
+
+ xfree (section_name);
+ if (ptid_get_lwp (inferior_ptid))
+ section_name = xstrprintf ("%s/%ld", name, ptid_get_lwp (inferior_ptid));
else
- strcpy (secname, ".reg");
-
- reg_sec = bfd_get_section_by_name (core_bfd, secname);
- if (!reg_sec)
- goto cant;
- size = bfd_section_size (core_bfd, reg_sec);
- the_regs = alloca (size);
- /* Look for the core functions that match this flavor. Default to the
- first one if nothing matches. */
- for (cf = core_file_fns; cf != NULL; cf = cf->next)
- {
- if (our_flavour == cf->core_flavour)
- {
- break;
- }
- }
- if (cf == NULL)
- {
- cf = core_file_fns;
- }
- if (cf != NULL &&
- bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr) 0, size) &&
- cf->core_read_registers != NULL)
+ section_name = xstrdup (name);
+
+ section = bfd_get_section_by_name (core_bfd, section_name);
+ if (! section)
{
- (cf->core_read_registers (the_regs, size, 0,
- (unsigned) bfd_section_vma (abfd, reg_sec)));
+ if (required)
+ warning (_("Couldn't find %s registers in core file."), human_name);
+ return;
}
- else
+
+ size = bfd_section_size (core_bfd, section);
+ contents = alloca (size);
+ if (! bfd_get_section_contents (core_bfd, section, contents,
+ (file_ptr) 0, size))
{
- cant:
- fprintf_filtered (gdb_stderr,
- "Couldn't fetch registers from core file: %s\n",
- bfd_errmsg (bfd_get_error ()));
+ warning (_("Couldn't read %s registers from `%s' section in core file."),
+ human_name, name);
+ return;
}
- /* Now do it again for the float registers, if they exist. */
- reg_sec = bfd_get_section_by_name (core_bfd, ".reg2");
- if (reg_sec)
+ if (core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch))
{
- size = bfd_section_size (core_bfd, reg_sec);
- the_regs = alloca (size);
- if (cf != NULL &&
- bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr) 0, size) &&
- cf->core_read_registers != NULL)
- {
- (cf->core_read_registers (the_regs, size, 2,
- (unsigned) bfd_section_vma (abfd, reg_sec)));
- }
- else
+ const struct regset *regset;
+
+ regset = gdbarch_regset_from_core_section (core_gdbarch, name, size);
+ if (regset == NULL)
{
- fprintf_filtered (gdb_stderr,
- "Couldn't fetch register set 2 from core file: %s\n",
- bfd_errmsg (bfd_get_error ()));
+ if (required)
+ warning (_("Couldn't recognize %s registers in core file."),
+ human_name);
+ return;
}
+
+ regset->supply_regset (regset, regcache, -1, contents, size);
+ return;
}
- registers_fetched ();
-}
-static char *
-core_file_to_sym_file (core)
- char *core;
-{
- CONST char *failing_command;
- char *p;
- char *temp;
- bfd *temp_bfd;
- int scratch_chan;
+ gdb_assert (core_vec);
+ core_vec->core_read_registers (regcache, contents, size, which,
+ ((CORE_ADDR)
+ bfd_section_vma (core_bfd, section)));
+}
- if (!core)
- error ("No core file specified.");
- core = tilde_expand (core);
- if (core[0] != '/')
- {
- temp = concat (current_directory, "/", core, NULL);
- core = temp;
- }
+/* 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. */
- scratch_chan = open (core, write_files ? O_RDWR : O_RDONLY, 0);
- if (scratch_chan < 0)
- perror_with_name (core);
+/* We just get all the registers, so we don't use regno. */
- temp_bfd = bfd_fdopenr (core, gnutarget, scratch_chan);
- if (temp_bfd == NULL)
- perror_with_name (core);
+static void
+get_core_registers (struct regcache *regcache, int regno)
+{
+ int i;
- if (!bfd_check_format (temp_bfd, bfd_core))
+ if (!(core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch))
+ && (core_vec == NULL || core_vec->core_read_registers == NULL))
{
- /* 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). */
- make_cleanup ((make_cleanup_func) bfd_close, temp_bfd);
- error ("\"%s\" is not a core dump: %s",
- core, bfd_errmsg (bfd_get_error ()));
+ fprintf_filtered (gdb_stderr,
+ "Can't fetch registers from this type of core file\n");
+ return;
}
- /* Find the data section */
- if (build_section_table (temp_bfd, &core_ops.to_sections,
- &core_ops.to_sections_end))
- error ("\"%s\": Can't find sections: %s",
- bfd_get_filename (temp_bfd), bfd_errmsg (bfd_get_error ()));
-
- failing_command = bfd_core_file_failing_command (temp_bfd);
-
- bfd_close (temp_bfd);
-
- /* If we found a filename, remember that it is probably saved
- relative to the executable that created it. If working directory
- isn't there now, we may not be able to find the executable. Rather
- than trying to be sauve about finding it, just check if the file
- exists where we are now. If not, then punt and tell our client
- we couldn't find the sym file.
- */
- p = (char *) failing_command;
- if ((p != NULL) && (access (p, F_OK) != 0))
- p = NULL;
-
- return p;
+ get_core_register_section (regcache,
+ ".reg", 0, "general-purpose", 1);
+ get_core_register_section (regcache,
+ ".reg2", 2, "floating-point", 0);
+ get_core_register_section (regcache,
+ ".reg-xfp", 3, "extended floating-point", 0);
+ get_core_register_section (regcache,
+ ".reg-ppc-vmx", 3, "ppc Altivec", 0);
+ get_core_register_section (regcache,
+ ".reg-ppc-vsx", 4, "POWER7 VSX", 0);
+
+ /* 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 (t)
- struct target_ops *t;
+core_files_info (struct target_ops *t)
{
print_section_info (t, core_bfd);
}
+\f
+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:
+ if (readbuf)
+ return (*ops->deprecated_xfer_memory) (offset, readbuf,
+ len, 0/*read*/, NULL, ops);
+ if (writebuf)
+ return (*ops->deprecated_xfer_memory) (offset, (gdb_byte *) writebuf,
+ 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;
+
+ 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 */
+
+ 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). */
static int
-ignore (addr, contents)
- CORE_ADDR addr;
- char *contents;
+ignore (struct bp_target_info *bp_tgt)
{
return 0;
}
behaviour.
*/
static int
-core_file_thread_alive (tid)
- int tid;
+core_file_thread_alive (ptid_t tid)
{
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 (gdbarch_core_read_description_p (current_gdbarch))
+ return gdbarch_core_read_description (current_gdbarch, target, core_bfd);
+
+ return NULL;
+}
+
+static char *
+core_pid_to_str (ptid_t ptid)
+{
+ static char buf[64];
+
+ if (ptid_get_lwp (ptid) == 0)
+ xsnprintf (buf, sizeof buf, "<main task>");
+ else
+ xsnprintf (buf, sizeof buf, "Thread %ld", ptid_get_lwp (ptid));
+
+ return buf;
+}
+
/* Fill in core_ops with its defined operations and properties. */
static void
-init_core_ops ()
+init_core_ops (void)
{
core_ops.to_shortname = "core";
core_ops.to_longname = "Local core dump file";
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.deprecated_xfer_memory = xfer_memory;
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_core_file_to_sym_file = core_file_to_sym_file;
+ core_ops.to_read_description = core_read_description;
+ core_ops.to_pid_to_str = core_pid_to_str;
core_ops.to_stratum = core_stratum;
core_ops.to_has_memory = 1;
core_ops.to_has_stack = 1;
int coreops_suppress_target;
void
-_initialize_corelow ()
+_initialize_corelow (void)
{
init_core_ops ();
projects / binutils-gdb.git / blobdiff