1 /* Core dump and executable file functions below target vector, for GDB.
3 Copyright (C) 1986-2017 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "arch-utils.h"
24 #ifdef HAVE_SYS_FILE_H
25 #include <sys/file.h> /* needed for F_OK and friends */
27 #include "frame.h" /* required by inferior.h */
35 #include "gdbthread.h"
40 #include "readline/readline.h"
42 #include "filenames.h"
43 #include "progspace.h"
46 #include "completer.h"
47 #include "filestuff.h"
53 /* List of all available core_fns. On gdb startup, each core file
54 register reader calls deprecated_add_core_fns() to register
55 information on each core format it is prepared to read. */
57 static struct core_fns
*core_file_fns
= NULL
;
59 /* The core_fns for a core file handler that is prepared to read the
60 core file currently open on core_bfd. */
62 static struct core_fns
*core_vec
= NULL
;
64 /* FIXME: kettenis/20031023: Eventually this variable should
67 static struct gdbarch
*core_gdbarch
= NULL
;
69 /* Per-core data. Currently, only the section table. Note that these
70 target sections are *not* mapped in the current address spaces' set
71 of target sections --- those should come only from pure executable
72 or shared library bfds. The core bfd sections are an
73 implementation detail of the core target, just like ptrace is for
74 unix child targets. */
75 static struct target_section_table
*core_data
;
77 static void core_files_info (struct target_ops
*);
79 static struct core_fns
*sniff_core_bfd (bfd
*);
81 static int gdb_check_format (bfd
*);
83 static void core_close (struct target_ops
*self
);
85 static void core_close_cleanup (void *ignore
);
87 static void add_to_thread_list (bfd
*, asection
*, void *);
89 static void init_core_ops (void);
91 void _initialize_corelow (void);
93 static struct target_ops core_ops
;
95 /* An arbitrary identifier for the core inferior. */
98 /* Link a new core_fns into the global core_file_fns list. Called on
99 gdb startup by the _initialize routine in each core file register
100 reader, to register information about each format the reader is
101 prepared to handle. */
104 deprecated_add_core_fns (struct core_fns
*cf
)
106 cf
->next
= core_file_fns
;
110 /* The default function that core file handlers can use to examine a
111 core file BFD and decide whether or not to accept the job of
112 reading the core file. */
115 default_core_sniffer (struct core_fns
*our_fns
, bfd
*abfd
)
119 result
= (bfd_get_flavour (abfd
) == our_fns
-> core_flavour
);
123 /* Walk through the list of core functions to find a set that can
124 handle the core file open on ABFD. Returns pointer to set that is
127 static struct core_fns
*
128 sniff_core_bfd (bfd
*abfd
)
131 struct core_fns
*yummy
= NULL
;
134 /* Don't sniff if we have support for register sets in
136 if (core_gdbarch
&& gdbarch_iterate_over_regset_sections_p (core_gdbarch
))
139 for (cf
= core_file_fns
; cf
!= NULL
; cf
= cf
->next
)
141 if (cf
->core_sniffer (cf
, abfd
))
149 warning (_("\"%s\": ambiguous core format, %d handlers match"),
150 bfd_get_filename (abfd
), matches
);
152 else if (matches
== 0)
153 error (_("\"%s\": no core file handler recognizes format"),
154 bfd_get_filename (abfd
));
159 /* The default is to reject every core file format we see. Either
160 BFD has to recognize it, or we have to provide a function in the
161 core file handler that recognizes it. */
164 default_check_format (bfd
*abfd
)
169 /* Attempt to recognize core file formats that BFD rejects. */
172 gdb_check_format (bfd
*abfd
)
176 for (cf
= core_file_fns
; cf
!= NULL
; cf
= cf
->next
)
178 if (cf
->check_format (abfd
))
186 /* Discard all vestiges of any previous core file and mark data and
187 stack spaces as empty. */
190 core_close (struct target_ops
*self
)
194 int pid
= ptid_get_pid (inferior_ptid
);
195 inferior_ptid
= null_ptid
; /* Avoid confusion from thread
198 exit_inferior_silent (pid
);
200 /* Clear out solib state while the bfd is still open. See
201 comments in clear_solib in solib.c. */
206 xfree (core_data
->sections
);
211 gdb_bfd_unref (core_bfd
);
219 core_close_cleanup (void *ignore
)
224 /* Look for sections whose names start with `.reg/' so that we can
225 extract the list of threads in a core file. */
228 add_to_thread_list (bfd
*abfd
, asection
*asect
, void *reg_sect_arg
)
233 asection
*reg_sect
= (asection
*) reg_sect_arg
;
235 struct inferior
*inf
;
237 if (!startswith (bfd_section_name (abfd
, asect
), ".reg/"))
240 core_tid
= atoi (bfd_section_name (abfd
, asect
) + 5);
242 pid
= bfd_core_file_pid (core_bfd
);
251 inf
= current_inferior ();
254 inferior_appeared (inf
, pid
);
255 inf
->fake_pid_p
= fake_pid_p
;
258 ptid
= ptid_build (pid
, lwpid
, 0);
262 /* Warning, Will Robinson, looking at BFD private data! */
265 && asect
->filepos
== reg_sect
->filepos
) /* Did we find .reg? */
266 inferior_ptid
= ptid
; /* Yes, make it current. */
269 /* This routine opens and sets up the core file bfd. */
272 core_open (const char *arg
, int from_tty
)
276 struct cleanup
*old_chain
;
282 target_preopen (from_tty
);
286 error (_("No core file specified. (Use `detach' "
287 "to stop debugging a core file.)"));
289 error (_("No core file specified."));
292 filename
= tilde_expand (arg
);
293 if (!IS_ABSOLUTE_PATH (filename
))
295 temp
= concat (current_directory
, "/",
296 filename
, (char *) NULL
);
301 old_chain
= make_cleanup (xfree
, filename
);
303 flags
= O_BINARY
| O_LARGEFILE
;
308 scratch_chan
= gdb_open_cloexec (filename
, flags
, 0);
309 if (scratch_chan
< 0)
310 perror_with_name (filename
);
312 gdb_bfd_ref_ptr
temp_bfd (gdb_bfd_fopen (filename
, gnutarget
,
313 write_files
? FOPEN_RUB
: FOPEN_RB
,
315 if (temp_bfd
== NULL
)
316 perror_with_name (filename
);
318 if (!bfd_check_format (temp_bfd
.get (), bfd_core
)
319 && !gdb_check_format (temp_bfd
.get ()))
321 /* Do it after the err msg */
322 /* FIXME: should be checking for errors from bfd_close (for one
323 thing, on error it does not free all the storage associated
325 error (_("\"%s\" is not a core dump: %s"),
326 filename
, bfd_errmsg (bfd_get_error ()));
329 /* Looks semi-reasonable. Toss the old core file and work on the
332 do_cleanups (old_chain
);
333 unpush_target (&core_ops
);
334 core_bfd
= temp_bfd
.release ();
335 old_chain
= make_cleanup (core_close_cleanup
, 0 /*ignore*/);
337 core_gdbarch
= gdbarch_from_bfd (core_bfd
);
339 /* Find a suitable core file handler to munch on core_bfd */
340 core_vec
= sniff_core_bfd (core_bfd
);
344 core_data
= XCNEW (struct target_section_table
);
346 /* Find the data section */
347 if (build_section_table (core_bfd
,
348 &core_data
->sections
,
349 &core_data
->sections_end
))
350 error (_("\"%s\": Can't find sections: %s"),
351 bfd_get_filename (core_bfd
), bfd_errmsg (bfd_get_error ()));
353 /* If we have no exec file, try to set the architecture from the
354 core file. We don't do this unconditionally since an exec file
355 typically contains more information that helps us determine the
356 architecture than a core file. */
358 set_gdbarch_from_file (core_bfd
);
360 push_target (&core_ops
);
361 discard_cleanups (old_chain
);
363 /* Do this before acknowledging the inferior, so if
364 post_create_inferior throws (can happen easilly if you're loading
365 a core file with the wrong exec), we aren't left with threads
366 from the previous inferior. */
369 inferior_ptid
= null_ptid
;
371 /* Need to flush the register cache (and the frame cache) from a
372 previous debug session. If inferior_ptid ends up the same as the
373 last debug session --- e.g., b foo; run; gcore core1; step; gcore
374 core2; core core1; core core2 --- then there's potential for
375 get_current_regcache to return the cached regcache of the
376 previous session, and the frame cache being stale. */
377 registers_changed ();
379 /* Build up thread list from BFD sections, and possibly set the
380 current thread to the .reg/NN section matching the .reg
382 bfd_map_over_sections (core_bfd
, add_to_thread_list
,
383 bfd_get_section_by_name (core_bfd
, ".reg"));
385 if (ptid_equal (inferior_ptid
, null_ptid
))
387 /* Either we found no .reg/NN section, and hence we have a
388 non-threaded core (single-threaded, from gdb's perspective),
389 or for some reason add_to_thread_list couldn't determine
390 which was the "main" thread. The latter case shouldn't
391 usually happen, but we're dealing with input here, which can
392 always be broken in different ways. */
393 struct thread_info
*thread
= first_thread_of_process (-1);
397 inferior_appeared (current_inferior (), CORELOW_PID
);
398 inferior_ptid
= pid_to_ptid (CORELOW_PID
);
399 add_thread_silent (inferior_ptid
);
402 switch_to_thread (thread
->ptid
);
405 post_create_inferior (&core_ops
, from_tty
);
407 /* Now go through the target stack looking for threads since there
408 may be a thread_stratum target loaded on top of target core by
409 now. The layer above should claim threads found in the BFD
413 target_update_thread_list ();
416 CATCH (except
, RETURN_MASK_ERROR
)
418 exception_print (gdb_stderr
, except
);
422 p
= bfd_core_file_failing_command (core_bfd
);
424 printf_filtered (_("Core was generated by `%s'.\n"), p
);
426 /* Clearing any previous state of convenience variables. */
427 clear_exit_convenience_vars ();
429 siggy
= bfd_core_file_failing_signal (core_bfd
);
432 /* If we don't have a CORE_GDBARCH to work with, assume a native
433 core (map gdb_signal from host signals). If we do have
434 CORE_GDBARCH to work with, but no gdb_signal_from_target
435 implementation for that gdbarch, as a fallback measure,
436 assume the host signal mapping. It'll be correct for native
437 cores, but most likely incorrect for cross-cores. */
438 enum gdb_signal sig
= (core_gdbarch
!= NULL
439 && gdbarch_gdb_signal_from_target_p (core_gdbarch
)
440 ? gdbarch_gdb_signal_from_target (core_gdbarch
,
442 : gdb_signal_from_host (siggy
));
444 printf_filtered (_("Program terminated with signal %s, %s.\n"),
445 gdb_signal_to_name (sig
), gdb_signal_to_string (sig
));
447 /* Set the value of the internal variable $_exitsignal,
448 which holds the signal uncaught by the inferior. */
449 set_internalvar_integer (lookup_internalvar ("_exitsignal"),
453 /* Fetch all registers from core file. */
454 target_fetch_registers (get_current_regcache (), -1);
456 /* Now, set up the frame cache, and print the top of stack. */
457 reinit_frame_cache ();
458 print_stack_frame (get_selected_frame (NULL
), 1, SRC_AND_LOC
, 1);
460 /* Current thread should be NUM 1 but the user does not know that.
461 If a program is single threaded gdb in general does not mention
462 anything about threads. That is why the test is >= 2. */
463 if (thread_count () >= 2)
467 thread_command (NULL
, from_tty
);
469 CATCH (except
, RETURN_MASK_ERROR
)
471 exception_print (gdb_stderr
, except
);
478 core_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
481 error (_("Too many arguments"));
483 reinit_frame_cache ();
485 printf_filtered (_("No core file now.\n"));
488 /* Try to retrieve registers from a section in core_bfd, and supply
489 them to core_vec->core_read_registers, as the register set numbered
492 If ptid's lwp member is zero, do the single-threaded
493 thing: look for a section named NAME. If ptid's lwp
494 member is non-zero, do the multi-threaded thing: look for a section
495 named "NAME/LWP", where LWP is the shortest ASCII decimal
496 representation of ptid's lwp member.
498 HUMAN_NAME is a human-readable name for the kind of registers the
499 NAME section contains, for use in error messages.
501 If REQUIRED is non-zero, print an error if the core file doesn't
502 have a section by the appropriate name. Otherwise, just do
506 get_core_register_section (struct regcache
*regcache
,
507 const struct regset
*regset
,
511 const char *human_name
,
514 static char *section_name
= NULL
;
515 struct bfd_section
*section
;
518 bool variable_size_section
= (regset
!= NULL
519 && regset
->flags
& REGSET_VARIABLE_SIZE
);
520 ptid_t ptid
= regcache_get_ptid (regcache
);
522 xfree (section_name
);
524 if (ptid_get_lwp (ptid
))
525 section_name
= xstrprintf ("%s/%ld", name
,
526 ptid_get_lwp (ptid
));
528 section_name
= xstrdup (name
);
530 section
= bfd_get_section_by_name (core_bfd
, section_name
);
534 warning (_("Couldn't find %s registers in core file."),
539 size
= bfd_section_size (core_bfd
, section
);
542 warning (_("Section `%s' in core file too small."), section_name
);
545 if (size
!= min_size
&& !variable_size_section
)
547 warning (_("Unexpected size of section `%s' in core file."),
551 contents
= (char *) alloca (size
);
552 if (! bfd_get_section_contents (core_bfd
, section
, contents
,
555 warning (_("Couldn't read %s registers from `%s' section in core file."),
562 regset
->supply_regset (regset
, regcache
, -1, contents
, size
);
566 gdb_assert (core_vec
);
567 core_vec
->core_read_registers (regcache
, contents
, size
, which
,
569 bfd_section_vma (core_bfd
, section
)));
572 /* Callback for get_core_registers that handles a single core file
573 register note section. */
576 get_core_registers_cb (const char *sect_name
, int size
,
577 const struct regset
*regset
,
578 const char *human_name
, void *cb_data
)
580 struct regcache
*regcache
= (struct regcache
*) cb_data
;
583 if (strcmp (sect_name
, ".reg") == 0)
586 if (human_name
== NULL
)
587 human_name
= "general-purpose";
589 else if (strcmp (sect_name
, ".reg2") == 0)
591 if (human_name
== NULL
)
592 human_name
= "floating-point";
595 /* The 'which' parameter is only used when no regset is provided.
596 Thus we just set it to -1. */
597 get_core_register_section (regcache
, regset
, sect_name
,
598 size
, -1, human_name
, required
);
601 /* Get the registers out of a core file. This is the machine-
602 independent part. Fetch_core_registers is the machine-dependent
603 part, typically implemented in the xm-file for each
606 /* We just get all the registers, so we don't use regno. */
609 get_core_registers (struct target_ops
*ops
,
610 struct regcache
*regcache
, int regno
)
613 struct gdbarch
*gdbarch
;
615 if (!(core_gdbarch
&& gdbarch_iterate_over_regset_sections_p (core_gdbarch
))
616 && (core_vec
== NULL
|| core_vec
->core_read_registers
== NULL
))
618 fprintf_filtered (gdb_stderr
,
619 "Can't fetch registers from this type of core file\n");
623 gdbarch
= get_regcache_arch (regcache
);
624 if (gdbarch_iterate_over_regset_sections_p (gdbarch
))
625 gdbarch_iterate_over_regset_sections (gdbarch
,
626 get_core_registers_cb
,
627 (void *) regcache
, NULL
);
630 get_core_register_section (regcache
, NULL
,
631 ".reg", 0, 0, "general-purpose", 1);
632 get_core_register_section (regcache
, NULL
,
633 ".reg2", 0, 2, "floating-point", 0);
636 /* Mark all registers not found in the core as unavailable. */
637 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
638 if (regcache_register_status (regcache
, i
) == REG_UNKNOWN
)
639 regcache_raw_supply (regcache
, i
, NULL
);
643 core_files_info (struct target_ops
*t
)
645 print_section_info (core_data
, core_bfd
);
658 add_to_spuid_list (bfd
*abfd
, asection
*asect
, void *list_p
)
660 struct spuid_list
*list
= (struct spuid_list
*) list_p
;
661 enum bfd_endian byte_order
662 = bfd_big_endian (abfd
) ? BFD_ENDIAN_BIG
: BFD_ENDIAN_LITTLE
;
665 sscanf (bfd_section_name (abfd
, asect
), "SPU/%d/regs%n", &fd
, &pos
);
669 if (list
->pos
>= list
->offset
&& list
->pos
+ 4 <= list
->offset
+ list
->len
)
671 store_unsigned_integer (list
->buf
+ list
->pos
- list
->offset
,
678 /* Read siginfo data from the core, if possible. Returns -1 on
679 failure. Otherwise, returns the number of bytes read. ABFD is the
680 core file's BFD; READBUF, OFFSET, and LEN are all as specified by
681 the to_xfer_partial interface. */
684 get_core_siginfo (bfd
*abfd
, gdb_byte
*readbuf
, ULONGEST offset
, ULONGEST len
)
688 const char *name
= ".note.linuxcore.siginfo";
690 if (ptid_get_lwp (inferior_ptid
))
691 section_name
= xstrprintf ("%s/%ld", name
,
692 ptid_get_lwp (inferior_ptid
));
694 section_name
= xstrdup (name
);
696 section
= bfd_get_section_by_name (abfd
, section_name
);
697 xfree (section_name
);
701 if (!bfd_get_section_contents (abfd
, section
, readbuf
, offset
, len
))
707 static enum target_xfer_status
708 core_xfer_partial (struct target_ops
*ops
, enum target_object object
,
709 const char *annex
, gdb_byte
*readbuf
,
710 const gdb_byte
*writebuf
, ULONGEST offset
,
711 ULONGEST len
, ULONGEST
*xfered_len
)
715 case TARGET_OBJECT_MEMORY
:
716 return section_table_xfer_memory_partial (readbuf
, writebuf
,
717 offset
, len
, xfered_len
,
719 core_data
->sections_end
,
722 case TARGET_OBJECT_AUXV
:
725 /* When the aux vector is stored in core file, BFD
726 represents this with a fake section called ".auxv". */
728 struct bfd_section
*section
;
731 section
= bfd_get_section_by_name (core_bfd
, ".auxv");
733 return TARGET_XFER_E_IO
;
735 size
= bfd_section_size (core_bfd
, section
);
737 return TARGET_XFER_EOF
;
743 return TARGET_XFER_EOF
;
744 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
745 (file_ptr
) offset
, size
))
747 warning (_("Couldn't read NT_AUXV note in core file."));
748 return TARGET_XFER_E_IO
;
751 *xfered_len
= (ULONGEST
) size
;
752 return TARGET_XFER_OK
;
754 return TARGET_XFER_E_IO
;
756 case TARGET_OBJECT_WCOOKIE
:
759 /* When the StackGhost cookie is stored in core file, BFD
760 represents this with a fake section called
763 struct bfd_section
*section
;
766 section
= bfd_get_section_by_name (core_bfd
, ".wcookie");
768 return TARGET_XFER_E_IO
;
770 size
= bfd_section_size (core_bfd
, section
);
772 return TARGET_XFER_EOF
;
778 return TARGET_XFER_EOF
;
779 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
780 (file_ptr
) offset
, size
))
782 warning (_("Couldn't read StackGhost cookie in core file."));
783 return TARGET_XFER_E_IO
;
786 *xfered_len
= (ULONGEST
) size
;
787 return TARGET_XFER_OK
;
790 return TARGET_XFER_E_IO
;
792 case TARGET_OBJECT_LIBRARIES
:
794 && gdbarch_core_xfer_shared_libraries_p (core_gdbarch
))
797 return TARGET_XFER_E_IO
;
800 *xfered_len
= gdbarch_core_xfer_shared_libraries (core_gdbarch
,
804 if (*xfered_len
== 0)
805 return TARGET_XFER_EOF
;
807 return TARGET_XFER_OK
;
812 case TARGET_OBJECT_LIBRARIES_AIX
:
814 && gdbarch_core_xfer_shared_libraries_aix_p (core_gdbarch
))
817 return TARGET_XFER_E_IO
;
821 = gdbarch_core_xfer_shared_libraries_aix (core_gdbarch
,
825 if (*xfered_len
== 0)
826 return TARGET_XFER_EOF
;
828 return TARGET_XFER_OK
;
833 case TARGET_OBJECT_SPU
:
834 if (readbuf
&& annex
)
836 /* When the SPU contexts are stored in a core file, BFD
837 represents this with a fake section called
840 struct bfd_section
*section
;
842 char sectionstr
[100];
844 xsnprintf (sectionstr
, sizeof sectionstr
, "SPU/%s", annex
);
846 section
= bfd_get_section_by_name (core_bfd
, sectionstr
);
848 return TARGET_XFER_E_IO
;
850 size
= bfd_section_size (core_bfd
, section
);
852 return TARGET_XFER_EOF
;
858 return TARGET_XFER_EOF
;
859 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
860 (file_ptr
) offset
, size
))
862 warning (_("Couldn't read SPU section in core file."));
863 return TARGET_XFER_E_IO
;
866 *xfered_len
= (ULONGEST
) size
;
867 return TARGET_XFER_OK
;
871 /* NULL annex requests list of all present spuids. */
872 struct spuid_list list
;
875 list
.offset
= offset
;
879 bfd_map_over_sections (core_bfd
, add_to_spuid_list
, &list
);
881 if (list
.written
== 0)
882 return TARGET_XFER_EOF
;
885 *xfered_len
= (ULONGEST
) list
.written
;
886 return TARGET_XFER_OK
;
889 return TARGET_XFER_E_IO
;
891 case TARGET_OBJECT_SIGNAL_INFO
:
894 LONGEST l
= get_core_siginfo (core_bfd
, readbuf
, offset
, len
);
899 return TARGET_XFER_OK
;
902 return TARGET_XFER_E_IO
;
905 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
,
907 writebuf
, offset
, len
,
913 /* If mourn is being called in all the right places, this could be say
914 `gdb internal error' (since generic_mourn calls
915 breakpoint_init_inferior). */
918 ignore (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
919 struct bp_target_info
*bp_tgt
)
924 /* Implement the to_remove_breakpoint method. */
927 core_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
928 struct bp_target_info
*bp_tgt
,
929 enum remove_bp_reason reason
)
935 /* Okay, let's be honest: threads gleaned from a core file aren't
936 exactly lively, are they? On the other hand, if we don't claim
937 that each & every one is alive, then we don't get any of them
938 to appear in an "info thread" command, which is quite a useful
942 core_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
947 /* Ask the current architecture what it knows about this core file.
948 That will be used, in turn, to pick a better architecture. This
949 wrapper could be avoided if targets got a chance to specialize
952 static const struct target_desc
*
953 core_read_description (struct target_ops
*target
)
955 if (core_gdbarch
&& gdbarch_core_read_description_p (core_gdbarch
))
957 const struct target_desc
*result
;
959 result
= gdbarch_core_read_description (core_gdbarch
,
965 return target
->beneath
->to_read_description (target
->beneath
);
969 core_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
972 struct inferior
*inf
;
975 /* The preferred way is to have a gdbarch/OS specific
978 && gdbarch_core_pid_to_str_p (core_gdbarch
))
979 return gdbarch_core_pid_to_str (core_gdbarch
, ptid
);
981 /* Otherwise, if we don't have one, we'll just fallback to
982 "process", with normal_pid_to_str. */
984 /* Try the LWPID field first. */
985 pid
= ptid_get_lwp (ptid
);
987 return normal_pid_to_str (pid_to_ptid (pid
));
989 /* Otherwise, this isn't a "threaded" core -- use the PID field, but
990 only if it isn't a fake PID. */
991 inf
= find_inferior_ptid (ptid
);
992 if (inf
!= NULL
&& !inf
->fake_pid_p
)
993 return normal_pid_to_str (ptid
);
995 /* No luck. We simply don't have a valid PID to print. */
996 xsnprintf (buf
, sizeof buf
, "<main task>");
1001 core_thread_name (struct target_ops
*self
, struct thread_info
*thr
)
1004 && gdbarch_core_thread_name_p (core_gdbarch
))
1005 return gdbarch_core_thread_name (core_gdbarch
, thr
);
1010 core_has_memory (struct target_ops
*ops
)
1012 return (core_bfd
!= NULL
);
1016 core_has_stack (struct target_ops
*ops
)
1018 return (core_bfd
!= NULL
);
1022 core_has_registers (struct target_ops
*ops
)
1024 return (core_bfd
!= NULL
);
1027 /* Implement the to_info_proc method. */
1030 core_info_proc (struct target_ops
*ops
, const char *args
,
1031 enum info_proc_what request
)
1033 struct gdbarch
*gdbarch
= get_current_arch ();
1035 /* Since this is the core file target, call the 'core_info_proc'
1036 method on gdbarch, not 'info_proc'. */
1037 if (gdbarch_core_info_proc_p (gdbarch
))
1038 gdbarch_core_info_proc (gdbarch
, args
, request
);
1041 /* Fill in core_ops with its defined operations and properties. */
1044 init_core_ops (void)
1046 core_ops
.to_shortname
= "core";
1047 core_ops
.to_longname
= "Local core dump file";
1049 "Use a core file as a target. Specify the filename of the core file.";
1050 core_ops
.to_open
= core_open
;
1051 core_ops
.to_close
= core_close
;
1052 core_ops
.to_detach
= core_detach
;
1053 core_ops
.to_fetch_registers
= get_core_registers
;
1054 core_ops
.to_xfer_partial
= core_xfer_partial
;
1055 core_ops
.to_files_info
= core_files_info
;
1056 core_ops
.to_insert_breakpoint
= ignore
;
1057 core_ops
.to_remove_breakpoint
= core_remove_breakpoint
;
1058 core_ops
.to_thread_alive
= core_thread_alive
;
1059 core_ops
.to_read_description
= core_read_description
;
1060 core_ops
.to_pid_to_str
= core_pid_to_str
;
1061 core_ops
.to_thread_name
= core_thread_name
;
1062 core_ops
.to_stratum
= process_stratum
;
1063 core_ops
.to_has_memory
= core_has_memory
;
1064 core_ops
.to_has_stack
= core_has_stack
;
1065 core_ops
.to_has_registers
= core_has_registers
;
1066 core_ops
.to_info_proc
= core_info_proc
;
1067 core_ops
.to_magic
= OPS_MAGIC
;
1070 internal_error (__FILE__
, __LINE__
,
1071 _("init_core_ops: core target already exists (\"%s\")."),
1072 core_target
->to_longname
);
1073 core_target
= &core_ops
;
1077 _initialize_corelow (void)
1081 add_target_with_completer (&core_ops
, filename_completer
);