1 /* Core dump and executable file functions below target vector, for GDB.
3 Copyright (C) 1986-2014 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 (strncmp (bfd_section_name (abfd, asect), ".reg/", 5) != 0)
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;
281 volatile struct gdb_exception except;
284 target_preopen (from_tty);
288 error (_("No core file specified. (Use `detach' "
289 "to stop debugging a core file.)"));
291 error (_("No core file specified."));
294 filename = tilde_expand (arg);
295 if (!IS_ABSOLUTE_PATH (filename))
297 temp = concat (current_directory, "/",
298 filename, (char *) NULL);
303 old_chain = make_cleanup (xfree, filename);
305 flags = O_BINARY | O_LARGEFILE;
310 scratch_chan = gdb_open_cloexec (filename, flags, 0);
311 if (scratch_chan < 0)
312 perror_with_name (filename);
314 temp_bfd = gdb_bfd_fopen (filename, gnutarget,
315 write_files ? FOPEN_RUB : FOPEN_RB,
317 if (temp_bfd == NULL)
318 perror_with_name (filename);
320 if (!bfd_check_format (temp_bfd, bfd_core)
321 && !gdb_check_format (temp_bfd))
323 /* Do it after the err msg */
324 /* FIXME: should be checking for errors from bfd_close (for one
325 thing, on error it does not free all the storage associated
327 make_cleanup_bfd_unref (temp_bfd);
328 error (_("\"%s\" is not a core dump: %s"),
329 filename, bfd_errmsg (bfd_get_error ()));
332 /* Looks semi-reasonable. Toss the old core file and work on the
335 do_cleanups (old_chain);
336 unpush_target (&core_ops);
338 old_chain = make_cleanup (core_close_cleanup, 0 /*ignore*/);
340 core_gdbarch = gdbarch_from_bfd (core_bfd);
342 /* Find a suitable core file handler to munch on core_bfd */
343 core_vec = sniff_core_bfd (core_bfd);
347 core_data = XCNEW (struct target_section_table);
349 /* Find the data section */
350 if (build_section_table (core_bfd,
351 &core_data->sections,
352 &core_data->sections_end))
353 error (_("\"%s\": Can't find sections: %s"),
354 bfd_get_filename (core_bfd), bfd_errmsg (bfd_get_error ()));
356 /* If we have no exec file, try to set the architecture from the
357 core file. We don't do this unconditionally since an exec file
358 typically contains more information that helps us determine the
359 architecture than a core file. */
361 set_gdbarch_from_file (core_bfd);
363 push_target (&core_ops);
364 discard_cleanups (old_chain);
366 /* Do this before acknowledging the inferior, so if
367 post_create_inferior throws (can happen easilly if you're loading
368 a core file with the wrong exec), we aren't left with threads
369 from the previous inferior. */
372 inferior_ptid = null_ptid;
374 /* Need to flush the register cache (and the frame cache) from a
375 previous debug session. If inferior_ptid ends up the same as the
376 last debug session --- e.g., b foo; run; gcore core1; step; gcore
377 core2; core core1; core core2 --- then there's potential for
378 get_current_regcache to return the cached regcache of the
379 previous session, and the frame cache being stale. */
380 registers_changed ();
382 /* Build up thread list from BFD sections, and possibly set the
383 current thread to the .reg/NN section matching the .reg
385 bfd_map_over_sections (core_bfd, add_to_thread_list,
386 bfd_get_section_by_name (core_bfd, ".reg"));
388 if (ptid_equal (inferior_ptid, null_ptid))
390 /* Either we found no .reg/NN section, and hence we have a
391 non-threaded core (single-threaded, from gdb's perspective),
392 or for some reason add_to_thread_list couldn't determine
393 which was the "main" thread. The latter case shouldn't
394 usually happen, but we're dealing with input here, which can
395 always be broken in different ways. */
396 struct thread_info *thread = first_thread_of_process (-1);
400 inferior_appeared (current_inferior (), CORELOW_PID);
401 inferior_ptid = pid_to_ptid (CORELOW_PID);
402 add_thread_silent (inferior_ptid);
405 switch_to_thread (thread->ptid);
408 post_create_inferior (&core_ops, from_tty);
410 /* Now go through the target stack looking for threads since there
411 may be a thread_stratum target loaded on top of target core by
412 now. The layer above should claim threads found in the BFD
414 TRY_CATCH (except, RETURN_MASK_ERROR)
416 target_update_thread_list ();
419 if (except.reason < 0)
420 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);
462 core_detach (struct target_ops *ops, const char *args, int from_tty)
465 error (_("Too many arguments"));
467 reinit_frame_cache ();
469 printf_filtered (_("No core file now.\n"));
472 /* Try to retrieve registers from a section in core_bfd, and supply
473 them to core_vec->core_read_registers, as the register set numbered
476 If inferior_ptid's lwp member is zero, do the single-threaded
477 thing: look for a section named NAME. If inferior_ptid's lwp
478 member is non-zero, do the multi-threaded thing: look for a section
479 named "NAME/LWP", where LWP is the shortest ASCII decimal
480 representation of inferior_ptid's lwp member.
482 HUMAN_NAME is a human-readable name for the kind of registers the
483 NAME section contains, for use in error messages.
485 If REQUIRED is non-zero, print an error if the core file doesn't
486 have a section by the appropriate name. Otherwise, just do
490 get_core_register_section (struct regcache *regcache,
491 const struct regset *regset,
495 const char *human_name,
498 static char *section_name = NULL;
499 struct bfd_section *section;
503 xfree (section_name);
505 if (ptid_get_lwp (inferior_ptid))
506 section_name = xstrprintf ("%s/%ld", name,
507 ptid_get_lwp (inferior_ptid));
509 section_name = xstrdup (name);
511 section = bfd_get_section_by_name (core_bfd, section_name);
515 warning (_("Couldn't find %s registers in core file."),
520 size = bfd_section_size (core_bfd, section);
523 warning (_("Section `%s' in core file too small."), section_name);
527 contents = alloca (size);
528 if (! bfd_get_section_contents (core_bfd, section, contents,
531 warning (_("Couldn't read %s registers from `%s' section in core file."),
538 regset->supply_regset (regset, regcache, -1, contents, size);
542 gdb_assert (core_vec);
543 core_vec->core_read_registers (regcache, contents, size, which,
545 bfd_section_vma (core_bfd, section)));
548 /* Callback for get_core_registers that handles a single core file
549 register note section. */
552 get_core_registers_cb (const char *sect_name, int size,
553 const struct regset *regset,
554 const char *human_name, void *cb_data)
556 struct regcache *regcache = (struct regcache *) cb_data;
559 if (strcmp (sect_name, ".reg") == 0)
562 if (human_name == NULL)
563 human_name = "general-purpose";
565 else if (strcmp (sect_name, ".reg2") == 0)
567 if (human_name == NULL)
568 human_name = "floating-point";
571 /* The 'which' parameter is only used when no regset is provided.
572 Thus we just set it to -1. */
573 get_core_register_section (regcache, regset, sect_name,
574 size, -1, human_name, required);
577 /* Get the registers out of a core file. This is the machine-
578 independent part. Fetch_core_registers is the machine-dependent
579 part, typically implemented in the xm-file for each
582 /* We just get all the registers, so we don't use regno. */
585 get_core_registers (struct target_ops *ops,
586 struct regcache *regcache, int regno)
589 struct gdbarch *gdbarch;
591 if (!(core_gdbarch && gdbarch_iterate_over_regset_sections_p (core_gdbarch))
592 && (core_vec == NULL || core_vec->core_read_registers == NULL))
594 fprintf_filtered (gdb_stderr,
595 "Can't fetch registers from this type of core file\n");
599 gdbarch = get_regcache_arch (regcache);
600 if (gdbarch_iterate_over_regset_sections_p (gdbarch))
601 gdbarch_iterate_over_regset_sections (gdbarch,
602 get_core_registers_cb,
603 (void *) regcache, NULL);
606 get_core_register_section (regcache, NULL,
607 ".reg", 0, 0, "general-purpose", 1);
608 get_core_register_section (regcache, NULL,
609 ".reg2", 0, 2, "floating-point", 0);
612 /* Mark all registers not found in the core as unavailable. */
613 for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
614 if (regcache_register_status (regcache, i) == REG_UNKNOWN)
615 regcache_raw_supply (regcache, i, NULL);
619 core_files_info (struct target_ops *t)
621 print_section_info (core_data, core_bfd);
634 add_to_spuid_list (bfd *abfd, asection *asect, void *list_p)
636 struct spuid_list *list = list_p;
637 enum bfd_endian byte_order
638 = bfd_big_endian (abfd) ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
641 sscanf (bfd_section_name (abfd, asect), "SPU/%d/regs%n", &fd, &pos);
645 if (list->pos >= list->offset && list->pos + 4 <= list->offset + list->len)
647 store_unsigned_integer (list->buf + list->pos - list->offset,
654 /* Read siginfo data from the core, if possible. Returns -1 on
655 failure. Otherwise, returns the number of bytes read. ABFD is the
656 core file's BFD; READBUF, OFFSET, and LEN are all as specified by
657 the to_xfer_partial interface. */
660 get_core_siginfo (bfd *abfd, gdb_byte *readbuf, ULONGEST offset, ULONGEST len)
664 const char *name = ".note.linuxcore.siginfo";
666 if (ptid_get_lwp (inferior_ptid))
667 section_name = xstrprintf ("%s/%ld", name,
668 ptid_get_lwp (inferior_ptid));
670 section_name = xstrdup (name);
672 section = bfd_get_section_by_name (abfd, section_name);
673 xfree (section_name);
677 if (!bfd_get_section_contents (abfd, section, readbuf, offset, len))
683 static enum target_xfer_status
684 core_xfer_partial (struct target_ops *ops, enum target_object object,
685 const char *annex, gdb_byte *readbuf,
686 const gdb_byte *writebuf, ULONGEST offset,
687 ULONGEST len, ULONGEST *xfered_len)
691 case TARGET_OBJECT_MEMORY:
692 return section_table_xfer_memory_partial (readbuf, writebuf,
693 offset, len, xfered_len,
695 core_data->sections_end,
698 case TARGET_OBJECT_AUXV:
701 /* When the aux vector is stored in core file, BFD
702 represents this with a fake section called ".auxv". */
704 struct bfd_section *section;
707 section = bfd_get_section_by_name (core_bfd, ".auxv");
709 return TARGET_XFER_E_IO;
711 size = bfd_section_size (core_bfd, section);
713 return TARGET_XFER_EOF;
719 return TARGET_XFER_EOF;
720 if (!bfd_get_section_contents (core_bfd, section, readbuf,
721 (file_ptr) offset, size))
723 warning (_("Couldn't read NT_AUXV note in core file."));
724 return TARGET_XFER_E_IO;
727 *xfered_len = (ULONGEST) size;
728 return TARGET_XFER_OK;
730 return TARGET_XFER_E_IO;
732 case TARGET_OBJECT_WCOOKIE:
735 /* When the StackGhost cookie is stored in core file, BFD
736 represents this with a fake section called
739 struct bfd_section *section;
742 section = bfd_get_section_by_name (core_bfd, ".wcookie");
744 return TARGET_XFER_E_IO;
746 size = bfd_section_size (core_bfd, section);
748 return TARGET_XFER_EOF;
754 return TARGET_XFER_EOF;
755 if (!bfd_get_section_contents (core_bfd, section, readbuf,
756 (file_ptr) offset, size))
758 warning (_("Couldn't read StackGhost cookie in core file."));
759 return TARGET_XFER_E_IO;
762 *xfered_len = (ULONGEST) size;
763 return TARGET_XFER_OK;
766 return TARGET_XFER_E_IO;
768 case TARGET_OBJECT_LIBRARIES:
770 && gdbarch_core_xfer_shared_libraries_p (core_gdbarch))
773 return TARGET_XFER_E_IO;
776 *xfered_len = gdbarch_core_xfer_shared_libraries (core_gdbarch,
780 if (*xfered_len == 0)
781 return TARGET_XFER_EOF;
783 return TARGET_XFER_OK;
788 case TARGET_OBJECT_LIBRARIES_AIX:
790 && gdbarch_core_xfer_shared_libraries_aix_p (core_gdbarch))
793 return TARGET_XFER_E_IO;
797 = gdbarch_core_xfer_shared_libraries_aix (core_gdbarch,
801 if (*xfered_len == 0)
802 return TARGET_XFER_EOF;
804 return TARGET_XFER_OK;
809 case TARGET_OBJECT_SPU:
810 if (readbuf && annex)
812 /* When the SPU contexts are stored in a core file, BFD
813 represents this with a fake section called
816 struct bfd_section *section;
818 char sectionstr[100];
820 xsnprintf (sectionstr, sizeof sectionstr, "SPU/%s", annex);
822 section = bfd_get_section_by_name (core_bfd, sectionstr);
824 return TARGET_XFER_E_IO;
826 size = bfd_section_size (core_bfd, section);
828 return TARGET_XFER_EOF;
834 return TARGET_XFER_EOF;
835 if (!bfd_get_section_contents (core_bfd, section, readbuf,
836 (file_ptr) offset, size))
838 warning (_("Couldn't read SPU section in core file."));
839 return TARGET_XFER_E_IO;
842 *xfered_len = (ULONGEST) size;
843 return TARGET_XFER_OK;
847 /* NULL annex requests list of all present spuids. */
848 struct spuid_list list;
851 list.offset = offset;
855 bfd_map_over_sections (core_bfd, add_to_spuid_list, &list);
857 if (list.written == 0)
858 return TARGET_XFER_EOF;
861 *xfered_len = (ULONGEST) list.written;
862 return TARGET_XFER_OK;
865 return TARGET_XFER_E_IO;
867 case TARGET_OBJECT_SIGNAL_INFO:
870 LONGEST l = get_core_siginfo (core_bfd, readbuf, offset, len);
875 return TARGET_XFER_OK;
878 return TARGET_XFER_E_IO;
881 return ops->beneath->to_xfer_partial (ops->beneath, object,
883 writebuf, offset, len,
889 /* If mourn is being called in all the right places, this could be say
890 `gdb internal error' (since generic_mourn calls
891 breakpoint_init_inferior). */
894 ignore (struct target_ops *ops, struct gdbarch *gdbarch,
895 struct bp_target_info *bp_tgt)
901 /* Okay, let's be honest: threads gleaned from a core file aren't
902 exactly lively, are they? On the other hand, if we don't claim
903 that each & every one is alive, then we don't get any of them
904 to appear in an "info thread" command, which is quite a useful
908 core_thread_alive (struct target_ops *ops, ptid_t ptid)
913 /* Ask the current architecture what it knows about this core file.
914 That will be used, in turn, to pick a better architecture. This
915 wrapper could be avoided if targets got a chance to specialize
918 static const struct target_desc *
919 core_read_description (struct target_ops *target)
921 if (core_gdbarch && gdbarch_core_read_description_p (core_gdbarch))
923 const struct target_desc *result;
925 result = gdbarch_core_read_description (core_gdbarch,
931 return target->beneath->to_read_description (target->beneath);
935 core_pid_to_str (struct target_ops *ops, ptid_t ptid)
938 struct inferior *inf;
941 /* The preferred way is to have a gdbarch/OS specific
944 && gdbarch_core_pid_to_str_p (core_gdbarch))
945 return gdbarch_core_pid_to_str (core_gdbarch, ptid);
947 /* Otherwise, if we don't have one, we'll just fallback to
948 "process", with normal_pid_to_str. */
950 /* Try the LWPID field first. */
951 pid = ptid_get_lwp (ptid);
953 return normal_pid_to_str (pid_to_ptid (pid));
955 /* Otherwise, this isn't a "threaded" core -- use the PID field, but
956 only if it isn't a fake PID. */
957 inf = find_inferior_pid (ptid_get_pid (ptid));
958 if (inf != NULL && !inf->fake_pid_p)
959 return normal_pid_to_str (ptid);
961 /* No luck. We simply don't have a valid PID to print. */
962 xsnprintf (buf, sizeof buf, "<main task>");
967 core_has_memory (struct target_ops *ops)
969 return (core_bfd != NULL);
973 core_has_stack (struct target_ops *ops)
975 return (core_bfd != NULL);
979 core_has_registers (struct target_ops *ops)
981 return (core_bfd != NULL);
984 /* Implement the to_info_proc method. */
987 core_info_proc (struct target_ops *ops, const char *args,
988 enum info_proc_what request)
990 struct gdbarch *gdbarch = get_current_arch ();
992 /* Since this is the core file target, call the 'core_info_proc'
993 method on gdbarch, not 'info_proc'. */
994 if (gdbarch_core_info_proc_p (gdbarch))
995 gdbarch_core_info_proc (gdbarch, args, request);
998 /* Fill in core_ops with its defined operations and properties. */
1001 init_core_ops (void)
1003 core_ops.to_shortname = "core";
1004 core_ops.to_longname = "Local core dump file";
1006 "Use a core file as a target. Specify the filename of the core file.";
1007 core_ops.to_open = core_open;
1008 core_ops.to_close = core_close;
1009 core_ops.to_detach = core_detach;
1010 core_ops.to_fetch_registers = get_core_registers;
1011 core_ops.to_xfer_partial = core_xfer_partial;
1012 core_ops.to_files_info = core_files_info;
1013 core_ops.to_insert_breakpoint = ignore;
1014 core_ops.to_remove_breakpoint = ignore;
1015 core_ops.to_thread_alive = core_thread_alive;
1016 core_ops.to_read_description = core_read_description;
1017 core_ops.to_pid_to_str = core_pid_to_str;
1018 core_ops.to_stratum = process_stratum;
1019 core_ops.to_has_memory = core_has_memory;
1020 core_ops.to_has_stack = core_has_stack;
1021 core_ops.to_has_registers = core_has_registers;
1022 core_ops.to_info_proc = core_info_proc;
1023 core_ops.to_magic = OPS_MAGIC;
1026 internal_error (__FILE__, __LINE__,
1027 _("init_core_ops: core target already exists (\"%s\")."),
1028 core_target->to_longname);
1029 core_target = &core_ops;
1033 _initialize_corelow (void)
1037 add_target_with_completer (&core_ops, filename_completer);