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 inferior_ptid's lwp member is zero, do the single-threaded
493 thing: look for a section named NAME. If inferior_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 inferior_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
;
519 xfree (section_name
);
521 if (ptid_get_lwp (inferior_ptid
))
522 section_name
= xstrprintf ("%s/%ld", name
,
523 ptid_get_lwp (inferior_ptid
));
525 section_name
= xstrdup (name
);
527 section
= bfd_get_section_by_name (core_bfd
, section_name
);
531 warning (_("Couldn't find %s registers in core file."),
536 size
= bfd_section_size (core_bfd
, section
);
539 warning (_("Section `%s' in core file too small."), section_name
);
542 if (size
!= min_size
&& !(regset
->flags
& REGSET_VARIABLE_SIZE
))
544 warning (_("Unexpected size of section `%s' in core file."),
548 contents
= (char *) alloca (size
);
549 if (! bfd_get_section_contents (core_bfd
, section
, contents
,
552 warning (_("Couldn't read %s registers from `%s' section in core file."),
559 regset
->supply_regset (regset
, regcache
, -1, contents
, size
);
563 gdb_assert (core_vec
);
564 core_vec
->core_read_registers (regcache
, contents
, size
, which
,
566 bfd_section_vma (core_bfd
, section
)));
569 /* Callback for get_core_registers that handles a single core file
570 register note section. */
573 get_core_registers_cb (const char *sect_name
, int size
,
574 const struct regset
*regset
,
575 const char *human_name
, void *cb_data
)
577 struct regcache
*regcache
= (struct regcache
*) cb_data
;
580 if (strcmp (sect_name
, ".reg") == 0)
583 if (human_name
== NULL
)
584 human_name
= "general-purpose";
586 else if (strcmp (sect_name
, ".reg2") == 0)
588 if (human_name
== NULL
)
589 human_name
= "floating-point";
592 /* The 'which' parameter is only used when no regset is provided.
593 Thus we just set it to -1. */
594 get_core_register_section (regcache
, regset
, sect_name
,
595 size
, -1, human_name
, required
);
598 /* Get the registers out of a core file. This is the machine-
599 independent part. Fetch_core_registers is the machine-dependent
600 part, typically implemented in the xm-file for each
603 /* We just get all the registers, so we don't use regno. */
606 get_core_registers (struct target_ops
*ops
,
607 struct regcache
*regcache
, int regno
)
610 struct gdbarch
*gdbarch
;
612 if (!(core_gdbarch
&& gdbarch_iterate_over_regset_sections_p (core_gdbarch
))
613 && (core_vec
== NULL
|| core_vec
->core_read_registers
== NULL
))
615 fprintf_filtered (gdb_stderr
,
616 "Can't fetch registers from this type of core file\n");
620 gdbarch
= get_regcache_arch (regcache
);
621 if (gdbarch_iterate_over_regset_sections_p (gdbarch
))
622 gdbarch_iterate_over_regset_sections (gdbarch
,
623 get_core_registers_cb
,
624 (void *) regcache
, NULL
);
627 get_core_register_section (regcache
, NULL
,
628 ".reg", 0, 0, "general-purpose", 1);
629 get_core_register_section (regcache
, NULL
,
630 ".reg2", 0, 2, "floating-point", 0);
633 /* Mark all registers not found in the core as unavailable. */
634 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
635 if (regcache_register_status (regcache
, i
) == REG_UNKNOWN
)
636 regcache_raw_supply (regcache
, i
, NULL
);
640 core_files_info (struct target_ops
*t
)
642 print_section_info (core_data
, core_bfd
);
655 add_to_spuid_list (bfd
*abfd
, asection
*asect
, void *list_p
)
657 struct spuid_list
*list
= (struct spuid_list
*) list_p
;
658 enum bfd_endian byte_order
659 = bfd_big_endian (abfd
) ? BFD_ENDIAN_BIG
: BFD_ENDIAN_LITTLE
;
662 sscanf (bfd_section_name (abfd
, asect
), "SPU/%d/regs%n", &fd
, &pos
);
666 if (list
->pos
>= list
->offset
&& list
->pos
+ 4 <= list
->offset
+ list
->len
)
668 store_unsigned_integer (list
->buf
+ list
->pos
- list
->offset
,
675 /* Read siginfo data from the core, if possible. Returns -1 on
676 failure. Otherwise, returns the number of bytes read. ABFD is the
677 core file's BFD; READBUF, OFFSET, and LEN are all as specified by
678 the to_xfer_partial interface. */
681 get_core_siginfo (bfd
*abfd
, gdb_byte
*readbuf
, ULONGEST offset
, ULONGEST len
)
685 const char *name
= ".note.linuxcore.siginfo";
687 if (ptid_get_lwp (inferior_ptid
))
688 section_name
= xstrprintf ("%s/%ld", name
,
689 ptid_get_lwp (inferior_ptid
));
691 section_name
= xstrdup (name
);
693 section
= bfd_get_section_by_name (abfd
, section_name
);
694 xfree (section_name
);
698 if (!bfd_get_section_contents (abfd
, section
, readbuf
, offset
, len
))
704 static enum target_xfer_status
705 core_xfer_partial (struct target_ops
*ops
, enum target_object object
,
706 const char *annex
, gdb_byte
*readbuf
,
707 const gdb_byte
*writebuf
, ULONGEST offset
,
708 ULONGEST len
, ULONGEST
*xfered_len
)
712 case TARGET_OBJECT_MEMORY
:
713 return section_table_xfer_memory_partial (readbuf
, writebuf
,
714 offset
, len
, xfered_len
,
716 core_data
->sections_end
,
719 case TARGET_OBJECT_AUXV
:
722 /* When the aux vector is stored in core file, BFD
723 represents this with a fake section called ".auxv". */
725 struct bfd_section
*section
;
728 section
= bfd_get_section_by_name (core_bfd
, ".auxv");
730 return TARGET_XFER_E_IO
;
732 size
= bfd_section_size (core_bfd
, section
);
734 return TARGET_XFER_EOF
;
740 return TARGET_XFER_EOF
;
741 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
742 (file_ptr
) offset
, size
))
744 warning (_("Couldn't read NT_AUXV note in core file."));
745 return TARGET_XFER_E_IO
;
748 *xfered_len
= (ULONGEST
) size
;
749 return TARGET_XFER_OK
;
751 return TARGET_XFER_E_IO
;
753 case TARGET_OBJECT_WCOOKIE
:
756 /* When the StackGhost cookie is stored in core file, BFD
757 represents this with a fake section called
760 struct bfd_section
*section
;
763 section
= bfd_get_section_by_name (core_bfd
, ".wcookie");
765 return TARGET_XFER_E_IO
;
767 size
= bfd_section_size (core_bfd
, section
);
769 return TARGET_XFER_EOF
;
775 return TARGET_XFER_EOF
;
776 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
777 (file_ptr
) offset
, size
))
779 warning (_("Couldn't read StackGhost cookie in core file."));
780 return TARGET_XFER_E_IO
;
783 *xfered_len
= (ULONGEST
) size
;
784 return TARGET_XFER_OK
;
787 return TARGET_XFER_E_IO
;
789 case TARGET_OBJECT_LIBRARIES
:
791 && gdbarch_core_xfer_shared_libraries_p (core_gdbarch
))
794 return TARGET_XFER_E_IO
;
797 *xfered_len
= gdbarch_core_xfer_shared_libraries (core_gdbarch
,
801 if (*xfered_len
== 0)
802 return TARGET_XFER_EOF
;
804 return TARGET_XFER_OK
;
809 case TARGET_OBJECT_LIBRARIES_AIX
:
811 && gdbarch_core_xfer_shared_libraries_aix_p (core_gdbarch
))
814 return TARGET_XFER_E_IO
;
818 = gdbarch_core_xfer_shared_libraries_aix (core_gdbarch
,
822 if (*xfered_len
== 0)
823 return TARGET_XFER_EOF
;
825 return TARGET_XFER_OK
;
830 case TARGET_OBJECT_SPU
:
831 if (readbuf
&& annex
)
833 /* When the SPU contexts are stored in a core file, BFD
834 represents this with a fake section called
837 struct bfd_section
*section
;
839 char sectionstr
[100];
841 xsnprintf (sectionstr
, sizeof sectionstr
, "SPU/%s", annex
);
843 section
= bfd_get_section_by_name (core_bfd
, sectionstr
);
845 return TARGET_XFER_E_IO
;
847 size
= bfd_section_size (core_bfd
, section
);
849 return TARGET_XFER_EOF
;
855 return TARGET_XFER_EOF
;
856 if (!bfd_get_section_contents (core_bfd
, section
, readbuf
,
857 (file_ptr
) offset
, size
))
859 warning (_("Couldn't read SPU section in core file."));
860 return TARGET_XFER_E_IO
;
863 *xfered_len
= (ULONGEST
) size
;
864 return TARGET_XFER_OK
;
868 /* NULL annex requests list of all present spuids. */
869 struct spuid_list list
;
872 list
.offset
= offset
;
876 bfd_map_over_sections (core_bfd
, add_to_spuid_list
, &list
);
878 if (list
.written
== 0)
879 return TARGET_XFER_EOF
;
882 *xfered_len
= (ULONGEST
) list
.written
;
883 return TARGET_XFER_OK
;
886 return TARGET_XFER_E_IO
;
888 case TARGET_OBJECT_SIGNAL_INFO
:
891 LONGEST l
= get_core_siginfo (core_bfd
, readbuf
, offset
, len
);
896 return TARGET_XFER_OK
;
899 return TARGET_XFER_E_IO
;
902 return ops
->beneath
->to_xfer_partial (ops
->beneath
, object
,
904 writebuf
, offset
, len
,
910 /* If mourn is being called in all the right places, this could be say
911 `gdb internal error' (since generic_mourn calls
912 breakpoint_init_inferior). */
915 ignore (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
916 struct bp_target_info
*bp_tgt
)
921 /* Implement the to_remove_breakpoint method. */
924 core_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
925 struct bp_target_info
*bp_tgt
,
926 enum remove_bp_reason reason
)
932 /* Okay, let's be honest: threads gleaned from a core file aren't
933 exactly lively, are they? On the other hand, if we don't claim
934 that each & every one is alive, then we don't get any of them
935 to appear in an "info thread" command, which is quite a useful
939 core_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
944 /* Ask the current architecture what it knows about this core file.
945 That will be used, in turn, to pick a better architecture. This
946 wrapper could be avoided if targets got a chance to specialize
949 static const struct target_desc
*
950 core_read_description (struct target_ops
*target
)
952 if (core_gdbarch
&& gdbarch_core_read_description_p (core_gdbarch
))
954 const struct target_desc
*result
;
956 result
= gdbarch_core_read_description (core_gdbarch
,
962 return target
->beneath
->to_read_description (target
->beneath
);
966 core_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
969 struct inferior
*inf
;
972 /* The preferred way is to have a gdbarch/OS specific
975 && gdbarch_core_pid_to_str_p (core_gdbarch
))
976 return gdbarch_core_pid_to_str (core_gdbarch
, ptid
);
978 /* Otherwise, if we don't have one, we'll just fallback to
979 "process", with normal_pid_to_str. */
981 /* Try the LWPID field first. */
982 pid
= ptid_get_lwp (ptid
);
984 return normal_pid_to_str (pid_to_ptid (pid
));
986 /* Otherwise, this isn't a "threaded" core -- use the PID field, but
987 only if it isn't a fake PID. */
988 inf
= find_inferior_ptid (ptid
);
989 if (inf
!= NULL
&& !inf
->fake_pid_p
)
990 return normal_pid_to_str (ptid
);
992 /* No luck. We simply don't have a valid PID to print. */
993 xsnprintf (buf
, sizeof buf
, "<main task>");
998 core_thread_name (struct target_ops
*self
, struct thread_info
*thr
)
1001 && gdbarch_core_thread_name_p (core_gdbarch
))
1002 return gdbarch_core_thread_name (core_gdbarch
, thr
);
1007 core_has_memory (struct target_ops
*ops
)
1009 return (core_bfd
!= NULL
);
1013 core_has_stack (struct target_ops
*ops
)
1015 return (core_bfd
!= NULL
);
1019 core_has_registers (struct target_ops
*ops
)
1021 return (core_bfd
!= NULL
);
1024 /* Implement the to_info_proc method. */
1027 core_info_proc (struct target_ops
*ops
, const char *args
,
1028 enum info_proc_what request
)
1030 struct gdbarch
*gdbarch
= get_current_arch ();
1032 /* Since this is the core file target, call the 'core_info_proc'
1033 method on gdbarch, not 'info_proc'. */
1034 if (gdbarch_core_info_proc_p (gdbarch
))
1035 gdbarch_core_info_proc (gdbarch
, args
, request
);
1038 /* Fill in core_ops with its defined operations and properties. */
1041 init_core_ops (void)
1043 core_ops
.to_shortname
= "core";
1044 core_ops
.to_longname
= "Local core dump file";
1046 "Use a core file as a target. Specify the filename of the core file.";
1047 core_ops
.to_open
= core_open
;
1048 core_ops
.to_close
= core_close
;
1049 core_ops
.to_detach
= core_detach
;
1050 core_ops
.to_fetch_registers
= get_core_registers
;
1051 core_ops
.to_xfer_partial
= core_xfer_partial
;
1052 core_ops
.to_files_info
= core_files_info
;
1053 core_ops
.to_insert_breakpoint
= ignore
;
1054 core_ops
.to_remove_breakpoint
= core_remove_breakpoint
;
1055 core_ops
.to_thread_alive
= core_thread_alive
;
1056 core_ops
.to_read_description
= core_read_description
;
1057 core_ops
.to_pid_to_str
= core_pid_to_str
;
1058 core_ops
.to_thread_name
= core_thread_name
;
1059 core_ops
.to_stratum
= process_stratum
;
1060 core_ops
.to_has_memory
= core_has_memory
;
1061 core_ops
.to_has_stack
= core_has_stack
;
1062 core_ops
.to_has_registers
= core_has_registers
;
1063 core_ops
.to_info_proc
= core_info_proc
;
1064 core_ops
.to_magic
= OPS_MAGIC
;
1067 internal_error (__FILE__
, __LINE__
,
1068 _("init_core_ops: core target already exists (\"%s\")."),
1069 core_target
->to_longname
);
1070 core_target
= &core_ops
;
1074 _initialize_corelow (void)
1078 add_target_with_completer (&core_ops
, filename_completer
);