/* Core dump and executable file functions below target vector, for GDB.
- Copyright 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995
+ Free Software Foundation, Inc.
This file is part of GDB.
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include "gdb_string.h"
#include <errno.h>
#include <signal.h>
#include <fcntl.h>
#include "bfd.h"
#include "target.h"
#include "gdbcore.h"
+#include "gdbthread.h"
-static void
-core_files_info PARAMS ((struct target_ops *));
+/* 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. */
+
+static struct core_fns *core_file_fns = NULL;
+
+static void core_files_info PARAMS ((struct target_ops *));
#ifdef SOLIB_ADD
-static int
-solib_add_stub PARAMS ((char *));
+static int solib_add_stub PARAMS ((char *));
#endif
-static void
-core_close PARAMS ((int));
+static void core_open PARAMS ((char *, int));
-static void
-get_core_registers PARAMS ((int));
+static void core_detach PARAMS ((char *, int));
+
+static void core_close PARAMS ((int));
+
+static void get_core_registers PARAMS ((int));
+
+/* 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;
+{
+ cf -> next = core_file_fns;
+ core_file_fns = cf;
+}
-/* 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 (quitting)
int quitting;
{
+ char *name;
+
inferior_pid = 0; /* Avoid confusion from thread stuff */
- if (core_bfd) {
- free (bfd_get_filename (core_bfd));
- bfd_close (core_bfd);
- core_bfd = NULL;
+ if (core_bfd)
+ {
+ name = bfd_get_filename (core_bfd);
+ if (!bfd_close (core_bfd))
+ warning ("cannot close \"%s\": %s",
+ name, bfd_errmsg (bfd_get_error ()));
+ free (name);
+ core_bfd = NULL;
#ifdef CLEAR_SOLIB
- CLEAR_SOLIB ();
+ CLEAR_SOLIB ();
#endif
- if (core_ops.to_sections) {
- free ((PTR)core_ops.to_sections);
- core_ops.to_sections = NULL;
- core_ops.to_sections_end = NULL;
+ if (core_ops.to_sections)
+ {
+ free ((PTR)core_ops.to_sections);
+ core_ops.to_sections = NULL;
+ core_ops.to_sections_end = NULL;
+ }
}
- }
}
#ifdef SOLIB_ADD
-/* Stub function for catch_errors around shared library hacking. */
+/* 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_tty)
- char *from_tty;
+solib_add_stub (from_ttyp)
+ char *from_ttyp;
{
- SOLIB_ADD (NULL, (int)from_tty, &core_ops);
- return 0;
+ SOLIB_ADD (NULL, *(int *)from_ttyp, ¤t_target);
+ re_enable_breakpoints_in_shlibs ();
+ return 0;
}
#endif /* SOLIB_ADD */
/* Warning, Will Robinson, looking at BFD private data! */
- if (asect->filepos == reg_sect->filepos) /* Did we find .reg? */
+ if (reg_sect != NULL
+ && asect->filepos == reg_sect->filepos) /* Did we find .reg? */
inferior_pid = thread_id; /* Yes, make it current */
}
-/* This routine opens and sets up the core file bfd */
+/* This routine opens and sets up the core file bfd. */
-void
+static void
core_open (filename, from_tty)
char *filename;
int from_tty;
target_preopen (from_tty);
if (!filename)
{
- error (core_bfd?
+ error (core_bfd ?
"No core file specified. (Use `detach' to stop debugging a core file.)"
: "No core file specified.");
}
filename = tilde_expand (filename);
- if (filename[0] != '/') {
- temp = concat (current_directory, "/", filename, NULL);
- free (filename);
- filename = temp;
- }
+ if (filename[0] != '/')
+ {
+ temp = concat (current_directory, "/", filename, NULL);
+ free (filename);
+ filename = temp;
+ }
old_chain = make_cleanup (free, filename);
- scratch_chan = open (filename, write_files? O_RDWR: O_RDONLY, 0);
+ scratch_chan = open (filename, write_files ? O_RDWR : O_RDONLY, 0);
if (scratch_chan < 0)
perror_with_name (filename);
temp_bfd = bfd_fdopenr (filename, gnutarget, scratch_chan);
if (temp_bfd == NULL)
- {
- perror_with_name (filename);
- }
+ perror_with_name (filename);
if (!bfd_check_format (temp_bfd, bfd_core))
{
/* 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 (bfd_close, temp_bfd);
- error ("\"%s\" is not a core dump: %s", filename, bfd_errmsg(bfd_error));
+ 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. */
/* Find the data section */
if (build_section_table (core_bfd, &core_ops.to_sections,
&core_ops.to_sections_end))
- error ("Can't find sections in `%s': %s", bfd_get_filename(core_bfd),
- bfd_errmsg (bfd_error));
+ error ("\"%s\": Can't find sections: %s",
+ bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
ontop = !push_target (&core_ops);
discard_cleanups (old_chain);
siggy = bfd_core_file_failing_signal (core_bfd);
if (siggy > 0)
printf_filtered ("Program terminated with signal %d, %s.\n", siggy,
- safe_strsignal (siggy));
+ safe_strsignal (siggy));
/* Build up thread list from BFD sections. */
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);
+ if (ontop)
+ {
+ /* Fetch all registers from core file. */
+ target_fetch_registers (-1);
- /* Add symbols and section mappings for any shared libraries */
+ /* Add symbols and section mappings for any shared libraries. */
#ifdef SOLIB_ADD
- catch_errors (solib_add_stub, (char *)from_tty, (char *)0,
- RETURN_MASK_ALL);
+ catch_errors (solib_add_stub, &from_tty, (char *)0,
+ RETURN_MASK_ALL);
#endif
- /* Now, set up the frame cache, and print the top of stack */
- set_current_frame (create_new_frame (read_fp (),
- read_pc ()));
- select_frame (get_current_frame (), 0);
- print_stack_frame (selected_frame, selected_frame_level, 1);
- } else {
- warning (
+ /* 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''", current_target->to_longname);
- }
+your %s; do ``info files''", target_longname);
+ }
}
-void
+static void
core_detach (args, from_tty)
char *args;
int from_tty;
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 (regno)
unsigned size;
char *the_regs;
char secname[10];
+ enum bfd_flavour our_flavour = bfd_get_flavour (core_bfd);
+ struct core_fns *cf;
+
+ if (core_file_fns == NULL)
+ {
+ fprintf_filtered (gdb_stderr,
+ "Can't fetch registers from this type of core file\n");
+ return;
+ }
/* 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
strcpy (secname, ".reg");
reg_sec = bfd_get_section_by_name (core_bfd, secname);
- if (!reg_sec) goto cant;
+ if (!reg_sec)
+ goto cant;
size = bfd_section_size (core_bfd, reg_sec);
the_regs = alloca (size);
- if (bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr)0, 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)
{
- fetch_core_registers (the_regs, size, 0,
- (unsigned) bfd_section_vma (abfd,reg_sec));
+ (cf -> core_read_registers (the_regs, size, 0,
+ (unsigned) bfd_section_vma (abfd,reg_sec)));
}
else
{
cant:
- fprintf_filtered (stderr, "Couldn't fetch registers from core file: %s\n",
- bfd_errmsg (bfd_error));
+ fprintf_filtered (gdb_stderr,
+ "Couldn't fetch registers from core file: %s\n",
+ bfd_errmsg (bfd_get_error ()));
}
/* Now do it again for the float registers, if they exist. */
reg_sec = bfd_get_section_by_name (core_bfd, ".reg2");
- if (reg_sec) {
- size = bfd_section_size (core_bfd, reg_sec);
- the_regs = alloca (size);
- if (bfd_get_section_contents (core_bfd, reg_sec, the_regs, (file_ptr)0,
- size))
- {
- fetch_core_registers (the_regs, size, 2,
- (unsigned) bfd_section_vma (abfd,reg_sec));
- }
- else
- {
- fprintf_filtered (stderr, "Couldn't fetch register set 2 from core file: %s\n",
- bfd_errmsg (bfd_error));
- }
- }
- registers_fetched();
+ if (reg_sec)
+ {
+ 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
+ {
+ fprintf_filtered (gdb_stderr,
+ "Couldn't fetch register set 2 from core file: %s\n",
+ bfd_errmsg (bfd_get_error ()));
+ }
+ }
+ registers_fetched ();
}
static void
CORE_ADDR addr;
char *contents;
{
+ return 0;
}
struct target_ops core_ops = {
- "core", "Local core dump file",
- "Use a core file as a target. Specify the filename of the core file.",
- core_open, core_close,
- find_default_attach, core_detach, 0, 0, /* resume, wait */
- get_core_registers,
- 0, 0, /* store_regs, prepare_to_store */
- xfer_memory, core_files_info,
- ignore, ignore, /* core_insert_breakpoint, core_remove_breakpoint, */
- 0, 0, 0, 0, 0, /* terminal stuff */
- 0, 0, 0, /* kill, load, lookup sym */
- find_default_create_inferior, 0, /* mourn_inferior */
- 0, /* can_run */
- 0, /* notice_signals */
- core_stratum, 0, /* next */
- 0, 1, 1, 1, 0, /* all mem, mem, stack, regs, exec */
- 0, 0, /* section pointers */
- OPS_MAGIC, /* Always the last thing */
+ "core", /* to_shortname */
+ "Local core dump file", /* to_longname */
+ "Use a core file as a target. Specify the filename of the core file.", /* to_doc */
+ core_open, /* to_open */
+ core_close, /* to_close */
+ find_default_attach, /* to_attach */
+ core_detach, /* to_detach */
+ 0, /* to_resume */
+ 0, /* to_wait */
+ get_core_registers, /* to_fetch_registers */
+ 0, /* to_store_registers */
+ 0, /* to_prepare_to_store */
+ xfer_memory, /* to_xfer_memory */
+ core_files_info, /* to_files_info */
+ ignore, /* to_insert_breakpoint */
+ ignore, /* to_remove_breakpoint */
+ 0, /* to_terminal_init */
+ 0, /* to_terminal_inferior */
+ 0, /* to_terminal_ours_for_output */
+ 0, /* to_terminal_ours */
+ 0, /* to_terminal_info */
+ 0, /* to_kill */
+ 0, /* to_load */
+ 0, /* to_lookup_symbol */
+ find_default_create_inferior, /* to_create_inferior */
+ 0, /* to_mourn_inferior */
+ 0, /* to_can_run */
+ 0, /* to_notice_signals */
+ 0, /* to_thread_alive */
+ 0, /* to_stop */
+ core_stratum, /* to_stratum */
+ 0, /* to_next */
+ 0, /* to_has_all_memory */
+ 1, /* to_has_memory */
+ 1, /* to_has_stack */
+ 1, /* to_has_registers */
+ 0, /* to_has_execution */
+ 0, /* to_sections */
+ 0, /* to_sections_end */
+ OPS_MAGIC, /* to_magic */
};
void
projects / binutils.git / blobdiff