mirror of
https://sourceware.org/git/binutils-gdb.git
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dccbb60975
This commit includes gdb_assert.h in common-defs.h and removes all other inclusions. gdb/ 2014-08-07 Gary Benson <gbenson@redhat.com> * common/common-defs.h: Include gdb_assert.h. * aarch64-tdep.c: Do not include gdb_assert.h. * addrmap.c: Likewise. * aix-thread.c: Likewise. * alpha-linux-tdep.c: Likewise. * alpha-mdebug-tdep.c: Likewise. * alphanbsd-tdep.c: Likewise. * amd64-nat.c: Likewise. * amd64-tdep.c: Likewise. * amd64bsd-nat.c: Likewise. * amd64fbsd-nat.c: Likewise. * amd64fbsd-tdep.c: Likewise. * amd64nbsd-nat.c: Likewise. * amd64nbsd-tdep.c: Likewise. * amd64obsd-nat.c: Likewise. * amd64obsd-tdep.c: Likewise. * arch-utils.c: Likewise. * arm-tdep.c: Likewise. * armbsd-tdep.c: Likewise. * auxv.c: Likewise. * bcache.c: Likewise. * bfin-tdep.c: Likewise. * blockframe.c: Likewise. * breakpoint.c: Likewise. * bsd-kvm.c: Likewise. * bsd-uthread.c: Likewise. * buildsym.c: Likewise. * c-exp.y: Likewise. * c-lang.c: Likewise. * charset.c: Likewise. * cleanups.c: Likewise. * cli-out.c: Likewise. * cli/cli-decode.c: Likewise. * cli/cli-dump.c: Likewise. * cli/cli-logging.c: Likewise. * cli/cli-script.c: Likewise. * cli/cli-utils.c: Likewise. * coffread.c: Likewise. * common/common-utils.c: Likewise. * common/queue.h: Likewise. * common/signals.c: Likewise. * common/vec.h: Likewise. * complaints.c: Likewise. * completer.c: Likewise. * corelow.c: Likewise. * cp-abi.c: Likewise. * cp-name-parser.y: Likewise. * cp-namespace.c: Likewise. * cp-support.c: Likewise. * cris-tdep.c: Likewise. * dbxread.c: Likewise. * dictionary.c: Likewise. * doublest.c: Likewise. * dsrec.c: Likewise. * dummy-frame.c: Likewise. * dwarf2-frame-tailcall.c: Likewise. * dwarf2-frame.c: Likewise. * dwarf2expr.c: Likewise. * dwarf2loc.c: Likewise. * dwarf2read.c: Likewise. * eval.c: Likewise. * event-loop.c: Likewise. * exceptions.c: Likewise. * expprint.c: Likewise. * f-valprint.c: Likewise. * fbsd-nat.c: Likewise. * findvar.c: Likewise. * frame-unwind.c: Likewise. * frame.c: Likewise. * frv-tdep.c: Likewise. * gcore.c: Likewise. * gdb-dlfcn.c: Likewise. * gdb_bfd.c: Likewise. * gdbarch.c: Likewise. * gdbarch.sh: Likewise. * gdbtypes.c: Likewise. * gnu-nat.c: Likewise. * gnu-v3-abi.c: Likewise. * go-lang.c: Likewise. * guile/scm-exception.c: Likewise. * guile/scm-gsmob.c: Likewise. * guile/scm-lazy-string.c: Likewise. * guile/scm-math.c: Likewise. * guile/scm-pretty-print.c: Likewise. * guile/scm-safe-call.c: Likewise. * guile/scm-utils.c: Likewise. * guile/scm-value.c: Likewise. * h8300-tdep.c: Likewise. * hppa-hpux-nat.c: Likewise. * hppa-tdep.c: Likewise. * hppanbsd-tdep.c: Likewise. * hppaobsd-tdep.c: Likewise. * i386-darwin-nat.c: Likewise. * i386-darwin-tdep.c: Likewise. * i386-nto-tdep.c: Likewise. * i386-tdep.c: Likewise. * i386bsd-nat.c: Likewise. * i386fbsd-tdep.c: Likewise. * i386gnu-nat.c: Likewise. * i386nbsd-tdep.c: Likewise. * i386obsd-tdep.c: Likewise. * i387-tdep.c: Likewise. * ia64-libunwind-tdep.c: Likewise. * ia64-tdep.c: Likewise. * inf-ptrace.c: Likewise. * inf-ttrace.c: Likewise. * infcall.c: Likewise. * infcmd.c: Likewise. * infrun.c: Likewise. * inline-frame.c: Likewise. * interps.c: Likewise. * jv-lang.c: Likewise. * jv-typeprint.c: Likewise. * linux-fork.c: Likewise. * linux-nat.c: Likewise. * linux-thread-db.c: Likewise. * m32c-tdep.c: Likewise. * m32r-linux-nat.c: Likewise. * m32r-tdep.c: Likewise. * m68k-tdep.c: Likewise. * m68kbsd-nat.c: Likewise. * m68kbsd-tdep.c: Likewise. * m88k-tdep.c: Likewise. * machoread.c: Likewise. * macroexp.c: Likewise. * macrotab.c: Likewise. * maint.c: Likewise. * mdebugread.c: Likewise. * memory-map.c: Likewise. * mep-tdep.c: Likewise. * mi/mi-common.c: Likewise. * microblaze-tdep.c: Likewise. * mingw-hdep.c: Likewise. * mips-linux-nat.c: Likewise. * mips-linux-tdep.c: Likewise. * mips-tdep.c: Likewise. * mips64obsd-tdep.c: Likewise. * mipsnbsd-tdep.c: Likewise. * mn10300-linux-tdep.c: Likewise. * mn10300-tdep.c: Likewise. * moxie-tdep.c: Likewise. * mt-tdep.c: Likewise. * nat/linux-btrace.c: Likewise. * nat/linux-osdata.c: Likewise. * nat/linux-ptrace.c: Likewise. * nat/mips-linux-watch.c: Likewise. * nios2-linux-tdep.c: Likewise. * nios2-tdep.c: Likewise. * objc-lang.c: Likewise. * objfiles.c: Likewise. * obsd-nat.c: Likewise. * opencl-lang.c: Likewise. * osabi.c: Likewise. * parse.c: Likewise. * ppc-linux-nat.c: Likewise. * ppc-sysv-tdep.c: Likewise. * ppcfbsd-nat.c: Likewise. * ppcfbsd-tdep.c: Likewise. * ppcnbsd-nat.c: Likewise. * ppcnbsd-tdep.c: Likewise. * ppcobsd-nat.c: Likewise. * ppcobsd-tdep.c: Likewise. * printcmd.c: Likewise. * procfs.c: Likewise. * prologue-value.c: Likewise. * psymtab.c: Likewise. * python/py-lazy-string.c: Likewise. * python/py-value.c: Likewise. * regcache.c: Likewise. * reggroups.c: Likewise. * registry.c: Likewise. * remote-sim.c: Likewise. * remote.c: Likewise. * rs6000-aix-tdep.c: Likewise. * rs6000-tdep.c: Likewise. * s390-linux-tdep.c: Likewise. * score-tdep.c: Likewise. * ser-base.c: Likewise. * ser-mingw.c: Likewise. * sh-tdep.c: Likewise. * sh64-tdep.c: Likewise. * solib-darwin.c: Likewise. * solib-spu.c: Likewise. * solib-svr4.c: Likewise. * source.c: Likewise. * sparc-nat.c: Likewise. * sparc-sol2-tdep.c: Likewise. * sparc-tdep.c: Likewise. * sparc64-sol2-tdep.c: Likewise. * sparc64-tdep.c: Likewise. * sparc64fbsd-tdep.c: Likewise. * sparc64nbsd-tdep.c: Likewise. * sparc64obsd-tdep.c: Likewise. * sparcnbsd-tdep.c: Likewise. * sparcobsd-tdep.c: Likewise. * spu-multiarch.c: Likewise. * spu-tdep.c: Likewise. * stabsread.c: Likewise. * stack.c: Likewise. * symfile.c: Likewise. * symtab.c: Likewise. * target-descriptions.c: Likewise. * target-memory.c: Likewise. * target.c: Likewise. * tic6x-linux-tdep.c: Likewise. * tic6x-tdep.c: Likewise. * tilegx-linux-nat.c: Likewise. * tilegx-tdep.c: Likewise. * top.c: Likewise. * tramp-frame.c: Likewise. * tui/tui-out.c: Likewise. * tui/tui-winsource.c: Likewise. * ui-out.c: Likewise. * user-regs.c: Likewise. * utils.c: Likewise. * v850-tdep.c: Likewise. * valops.c: Likewise. * value.c: Likewise. * varobj.c: Likewise. * vax-nat.c: Likewise. * xml-syscall.c: Likewise. * xml-tdesc.c: Likewise. * xstormy16-tdep.c: Likewise. * xtensa-linux-nat.c: Likewise. * xtensa-tdep.c: Likewise. gdb/gdbserver/ 2014-08-07 Gary Benson <gbenson@redhat.com> * server.h: Do not include gdb_assert.h.
633 lines
18 KiB
C
633 lines
18 KiB
C
/* Generate a core file for the inferior process.
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Copyright (C) 2001-2014 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "elf-bfd.h"
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#include "infcall.h"
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#include "inferior.h"
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#include "gdbcore.h"
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#include "objfiles.h"
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#include "solib.h"
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#include "symfile.h"
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#include "arch-utils.h"
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#include "completer.h"
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#include "gcore.h"
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#include "cli/cli-decode.h"
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#include <fcntl.h>
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#include "regcache.h"
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#include "regset.h"
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#include "gdb_bfd.h"
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#include "readline/tilde.h"
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/* The largest amount of memory to read from the target at once. We
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must throttle it to limit the amount of memory used by GDB during
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generate-core-file for programs with large resident data. */
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#define MAX_COPY_BYTES (1024 * 1024)
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static const char *default_gcore_target (void);
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static enum bfd_architecture default_gcore_arch (void);
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static unsigned long default_gcore_mach (void);
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static int gcore_memory_sections (bfd *);
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/* create_gcore_bfd -- helper for gcore_command (exported).
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Open a new bfd core file for output, and return the handle. */
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bfd *
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create_gcore_bfd (const char *filename)
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{
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bfd *obfd = gdb_bfd_openw (filename, default_gcore_target ());
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if (!obfd)
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error (_("Failed to open '%s' for output."), filename);
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bfd_set_format (obfd, bfd_core);
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bfd_set_arch_mach (obfd, default_gcore_arch (), default_gcore_mach ());
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return obfd;
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}
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/* write_gcore_file_1 -- do the actual work of write_gcore_file. */
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static void
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write_gcore_file_1 (bfd *obfd)
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{
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struct cleanup *cleanup;
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void *note_data = NULL;
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int note_size = 0;
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asection *note_sec = NULL;
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/* An external target method must build the notes section. */
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/* FIXME: uweigand/2011-10-06: All architectures that support core file
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generation should be converted to gdbarch_make_corefile_notes; at that
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point, the target vector method can be removed. */
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if (!gdbarch_make_corefile_notes_p (target_gdbarch ()))
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note_data = target_make_corefile_notes (obfd, ¬e_size);
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else
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note_data = gdbarch_make_corefile_notes (target_gdbarch (), obfd, ¬e_size);
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cleanup = make_cleanup (xfree, note_data);
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if (note_data == NULL || note_size == 0)
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error (_("Target does not support core file generation."));
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/* Create the note section. */
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note_sec = bfd_make_section_anyway_with_flags (obfd, "note0",
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SEC_HAS_CONTENTS
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| SEC_READONLY
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| SEC_ALLOC);
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if (note_sec == NULL)
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error (_("Failed to create 'note' section for corefile: %s"),
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bfd_errmsg (bfd_get_error ()));
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bfd_set_section_vma (obfd, note_sec, 0);
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bfd_set_section_alignment (obfd, note_sec, 0);
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bfd_set_section_size (obfd, note_sec, note_size);
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/* Now create the memory/load sections. */
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if (gcore_memory_sections (obfd) == 0)
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error (_("gcore: failed to get corefile memory sections from target."));
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/* Write out the contents of the note section. */
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if (!bfd_set_section_contents (obfd, note_sec, note_data, 0, note_size))
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warning (_("writing note section (%s)"), bfd_errmsg (bfd_get_error ()));
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do_cleanups (cleanup);
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}
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/* write_gcore_file -- helper for gcore_command (exported).
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Compose and write the corefile data to the core file. */
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void
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write_gcore_file (bfd *obfd)
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{
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volatile struct gdb_exception except;
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target_prepare_to_generate_core ();
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TRY_CATCH (except, RETURN_MASK_ALL)
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write_gcore_file_1 (obfd);
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target_done_generating_core ();
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if (except.reason < 0)
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throw_exception (except);
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}
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static void
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do_bfd_delete_cleanup (void *arg)
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{
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bfd *obfd = arg;
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const char *filename = obfd->filename;
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gdb_bfd_unref (arg);
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unlink (filename);
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}
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/* gcore_command -- implements the 'gcore' command.
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Generate a core file from the inferior process. */
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static void
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gcore_command (char *args, int from_tty)
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{
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struct cleanup *filename_chain;
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struct cleanup *bfd_chain;
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char *corefilename;
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bfd *obfd;
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/* No use generating a corefile without a target process. */
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if (!target_has_execution)
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noprocess ();
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if (args && *args)
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corefilename = tilde_expand (args);
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else
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{
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/* Default corefile name is "core.PID". */
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corefilename = xstrprintf ("core.%d", ptid_get_pid (inferior_ptid));
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}
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filename_chain = make_cleanup (xfree, corefilename);
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if (info_verbose)
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fprintf_filtered (gdb_stdout,
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"Opening corefile '%s' for output.\n", corefilename);
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/* Open the output file. */
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obfd = create_gcore_bfd (corefilename);
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/* Need a cleanup that will close and delete the file. */
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bfd_chain = make_cleanup (do_bfd_delete_cleanup, obfd);
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/* Call worker function. */
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write_gcore_file (obfd);
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/* Succeeded. */
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discard_cleanups (bfd_chain);
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gdb_bfd_unref (obfd);
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fprintf_filtered (gdb_stdout, "Saved corefile %s\n", corefilename);
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do_cleanups (filename_chain);
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}
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static unsigned long
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default_gcore_mach (void)
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{
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#if 1 /* See if this even matters... */
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return 0;
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#else
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const struct bfd_arch_info *bfdarch = gdbarch_bfd_arch_info (target_gdbarch ());
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if (bfdarch != NULL)
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return bfdarch->mach;
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if (exec_bfd == NULL)
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error (_("Can't find default bfd machine type (need execfile)."));
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return bfd_get_mach (exec_bfd);
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#endif /* 1 */
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}
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static enum bfd_architecture
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default_gcore_arch (void)
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{
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const struct bfd_arch_info *bfdarch = gdbarch_bfd_arch_info (target_gdbarch ());
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if (bfdarch != NULL)
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return bfdarch->arch;
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if (exec_bfd == NULL)
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error (_("Can't find bfd architecture for corefile (need execfile)."));
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return bfd_get_arch (exec_bfd);
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}
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static const char *
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default_gcore_target (void)
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{
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/* The gdbarch may define a target to use for core files. */
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if (gdbarch_gcore_bfd_target_p (target_gdbarch ()))
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return gdbarch_gcore_bfd_target (target_gdbarch ());
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/* Otherwise, try to fall back to the exec_bfd target. This will probably
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not work for non-ELF targets. */
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if (exec_bfd == NULL)
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return NULL;
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else
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return bfd_get_target (exec_bfd);
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}
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/* Derive a reasonable stack segment by unwinding the target stack,
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and store its limits in *BOTTOM and *TOP. Return non-zero if
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successful. */
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static int
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derive_stack_segment (bfd_vma *bottom, bfd_vma *top)
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{
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struct frame_info *fi, *tmp_fi;
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gdb_assert (bottom);
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gdb_assert (top);
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/* Can't succeed without stack and registers. */
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if (!target_has_stack || !target_has_registers)
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return 0;
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/* Can't succeed without current frame. */
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fi = get_current_frame ();
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if (fi == NULL)
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return 0;
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/* Save frame pointer of TOS frame. */
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*top = get_frame_base (fi);
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/* If current stack pointer is more "inner", use that instead. */
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if (gdbarch_inner_than (get_frame_arch (fi), get_frame_sp (fi), *top))
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*top = get_frame_sp (fi);
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/* Find prev-most frame. */
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while ((tmp_fi = get_prev_frame (fi)) != NULL)
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fi = tmp_fi;
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/* Save frame pointer of prev-most frame. */
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*bottom = get_frame_base (fi);
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/* Now canonicalize their order, so that BOTTOM is a lower address
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(as opposed to a lower stack frame). */
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if (*bottom > *top)
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{
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bfd_vma tmp_vma;
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tmp_vma = *top;
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*top = *bottom;
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*bottom = tmp_vma;
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}
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return 1;
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}
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/* call_target_sbrk --
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helper function for derive_heap_segment. */
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static bfd_vma
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call_target_sbrk (int sbrk_arg)
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{
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struct objfile *sbrk_objf;
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struct gdbarch *gdbarch;
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bfd_vma top_of_heap;
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struct value *target_sbrk_arg;
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struct value *sbrk_fn, *ret;
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bfd_vma tmp;
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if (lookup_minimal_symbol ("sbrk", NULL, NULL).minsym != NULL)
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{
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sbrk_fn = find_function_in_inferior ("sbrk", &sbrk_objf);
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if (sbrk_fn == NULL)
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return (bfd_vma) 0;
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}
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else if (lookup_minimal_symbol ("_sbrk", NULL, NULL).minsym != NULL)
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{
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sbrk_fn = find_function_in_inferior ("_sbrk", &sbrk_objf);
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if (sbrk_fn == NULL)
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return (bfd_vma) 0;
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}
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else
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return (bfd_vma) 0;
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gdbarch = get_objfile_arch (sbrk_objf);
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target_sbrk_arg = value_from_longest (builtin_type (gdbarch)->builtin_int,
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sbrk_arg);
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gdb_assert (target_sbrk_arg);
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ret = call_function_by_hand (sbrk_fn, 1, &target_sbrk_arg);
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if (ret == NULL)
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return (bfd_vma) 0;
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tmp = value_as_long (ret);
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if ((LONGEST) tmp <= 0 || (LONGEST) tmp == 0xffffffff)
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return (bfd_vma) 0;
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top_of_heap = tmp;
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return top_of_heap;
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}
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/* Derive a reasonable heap segment for ABFD by looking at sbrk and
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the static data sections. Store its limits in *BOTTOM and *TOP.
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Return non-zero if successful. */
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static int
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derive_heap_segment (bfd *abfd, bfd_vma *bottom, bfd_vma *top)
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{
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bfd_vma top_of_data_memory = 0;
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bfd_vma top_of_heap = 0;
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bfd_size_type sec_size;
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bfd_vma sec_vaddr;
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asection *sec;
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gdb_assert (bottom);
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gdb_assert (top);
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/* This function depends on being able to call a function in the
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inferior. */
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if (!target_has_execution)
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return 0;
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/* The following code assumes that the link map is arranged as
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follows (low to high addresses):
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---------------------------------
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| text sections |
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---------------------------------
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| data sections (including bss) |
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---------------------------------
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| heap |
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--------------------------------- */
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for (sec = abfd->sections; sec; sec = sec->next)
|
|
{
|
|
if (bfd_get_section_flags (abfd, sec) & SEC_DATA
|
|
|| strcmp (".bss", bfd_section_name (abfd, sec)) == 0)
|
|
{
|
|
sec_vaddr = bfd_get_section_vma (abfd, sec);
|
|
sec_size = bfd_get_section_size (sec);
|
|
if (sec_vaddr + sec_size > top_of_data_memory)
|
|
top_of_data_memory = sec_vaddr + sec_size;
|
|
}
|
|
}
|
|
|
|
top_of_heap = call_target_sbrk (0);
|
|
if (top_of_heap == (bfd_vma) 0)
|
|
return 0;
|
|
|
|
/* Return results. */
|
|
if (top_of_heap > top_of_data_memory)
|
|
{
|
|
*bottom = top_of_data_memory;
|
|
*top = top_of_heap;
|
|
return 1;
|
|
}
|
|
|
|
/* No additional heap space needs to be saved. */
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
make_output_phdrs (bfd *obfd, asection *osec, void *ignored)
|
|
{
|
|
int p_flags = 0;
|
|
int p_type = 0;
|
|
|
|
/* FIXME: these constants may only be applicable for ELF. */
|
|
if (strncmp (bfd_section_name (obfd, osec), "load", 4) == 0)
|
|
p_type = PT_LOAD;
|
|
else if (strncmp (bfd_section_name (obfd, osec), "note", 4) == 0)
|
|
p_type = PT_NOTE;
|
|
else
|
|
p_type = PT_NULL;
|
|
|
|
p_flags |= PF_R; /* Segment is readable. */
|
|
if (!(bfd_get_section_flags (obfd, osec) & SEC_READONLY))
|
|
p_flags |= PF_W; /* Segment is writable. */
|
|
if (bfd_get_section_flags (obfd, osec) & SEC_CODE)
|
|
p_flags |= PF_X; /* Segment is executable. */
|
|
|
|
bfd_record_phdr (obfd, p_type, 1, p_flags, 0, 0, 0, 0, 1, &osec);
|
|
}
|
|
|
|
/* find_memory_region_ftype implementation. DATA is 'bfd *' for the core file
|
|
GDB is creating. */
|
|
|
|
static int
|
|
gcore_create_callback (CORE_ADDR vaddr, unsigned long size, int read,
|
|
int write, int exec, int modified, void *data)
|
|
{
|
|
bfd *obfd = data;
|
|
asection *osec;
|
|
flagword flags = SEC_ALLOC | SEC_HAS_CONTENTS | SEC_LOAD;
|
|
|
|
/* If the memory segment has no permissions set, ignore it, otherwise
|
|
when we later try to access it for read/write, we'll get an error
|
|
or jam the kernel. */
|
|
if (read == 0 && write == 0 && exec == 0 && modified == 0)
|
|
{
|
|
if (info_verbose)
|
|
{
|
|
fprintf_filtered (gdb_stdout, "Ignore segment, %s bytes at %s\n",
|
|
plongest (size), paddress (target_gdbarch (), vaddr));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (write == 0 && modified == 0 && !solib_keep_data_in_core (vaddr, size))
|
|
{
|
|
/* See if this region of memory lies inside a known file on disk.
|
|
If so, we can avoid copying its contents by clearing SEC_LOAD. */
|
|
struct objfile *objfile;
|
|
struct obj_section *objsec;
|
|
|
|
ALL_OBJSECTIONS (objfile, objsec)
|
|
{
|
|
bfd *abfd = objfile->obfd;
|
|
asection *asec = objsec->the_bfd_section;
|
|
bfd_vma align = (bfd_vma) 1 << bfd_get_section_alignment (abfd,
|
|
asec);
|
|
bfd_vma start = obj_section_addr (objsec) & -align;
|
|
bfd_vma end = (obj_section_endaddr (objsec) + align - 1) & -align;
|
|
|
|
/* Match if either the entire memory region lies inside the
|
|
section (i.e. a mapping covering some pages of a large
|
|
segment) or the entire section lies inside the memory region
|
|
(i.e. a mapping covering multiple small sections).
|
|
|
|
This BFD was synthesized from reading target memory,
|
|
we don't want to omit that. */
|
|
if (objfile->separate_debug_objfile_backlink == NULL
|
|
&& ((vaddr >= start && vaddr + size <= end)
|
|
|| (start >= vaddr && end <= vaddr + size))
|
|
&& !(bfd_get_file_flags (abfd) & BFD_IN_MEMORY))
|
|
{
|
|
flags &= ~(SEC_LOAD | SEC_HAS_CONTENTS);
|
|
goto keep; /* Break out of two nested for loops. */
|
|
}
|
|
}
|
|
|
|
keep:;
|
|
}
|
|
|
|
if (write == 0)
|
|
flags |= SEC_READONLY;
|
|
|
|
if (exec)
|
|
flags |= SEC_CODE;
|
|
else
|
|
flags |= SEC_DATA;
|
|
|
|
osec = bfd_make_section_anyway_with_flags (obfd, "load", flags);
|
|
if (osec == NULL)
|
|
{
|
|
warning (_("Couldn't make gcore segment: %s"),
|
|
bfd_errmsg (bfd_get_error ()));
|
|
return 1;
|
|
}
|
|
|
|
if (info_verbose)
|
|
{
|
|
fprintf_filtered (gdb_stdout, "Save segment, %s bytes at %s\n",
|
|
plongest (size), paddress (target_gdbarch (), vaddr));
|
|
}
|
|
|
|
bfd_set_section_size (obfd, osec, size);
|
|
bfd_set_section_vma (obfd, osec, vaddr);
|
|
bfd_section_lma (obfd, osec) = 0; /* ??? bfd_set_section_lma? */
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
objfile_find_memory_regions (struct target_ops *self,
|
|
find_memory_region_ftype func, void *obfd)
|
|
{
|
|
/* Use objfile data to create memory sections. */
|
|
struct objfile *objfile;
|
|
struct obj_section *objsec;
|
|
bfd_vma temp_bottom, temp_top;
|
|
|
|
/* Call callback function for each objfile section. */
|
|
ALL_OBJSECTIONS (objfile, objsec)
|
|
{
|
|
bfd *ibfd = objfile->obfd;
|
|
asection *isec = objsec->the_bfd_section;
|
|
flagword flags = bfd_get_section_flags (ibfd, isec);
|
|
|
|
/* Separate debug info files are irrelevant for gcore. */
|
|
if (objfile->separate_debug_objfile_backlink != NULL)
|
|
continue;
|
|
|
|
if ((flags & SEC_ALLOC) || (flags & SEC_LOAD))
|
|
{
|
|
int size = bfd_section_size (ibfd, isec);
|
|
int ret;
|
|
|
|
ret = (*func) (obj_section_addr (objsec), size,
|
|
1, /* All sections will be readable. */
|
|
(flags & SEC_READONLY) == 0, /* Writable. */
|
|
(flags & SEC_CODE) != 0, /* Executable. */
|
|
1, /* MODIFIED is unknown, pass it as true. */
|
|
obfd);
|
|
if (ret != 0)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Make a stack segment. */
|
|
if (derive_stack_segment (&temp_bottom, &temp_top))
|
|
(*func) (temp_bottom, temp_top - temp_bottom,
|
|
1, /* Stack section will be readable. */
|
|
1, /* Stack section will be writable. */
|
|
0, /* Stack section will not be executable. */
|
|
1, /* Stack section will be modified. */
|
|
obfd);
|
|
|
|
/* Make a heap segment. */
|
|
if (derive_heap_segment (exec_bfd, &temp_bottom, &temp_top))
|
|
(*func) (temp_bottom, temp_top - temp_bottom,
|
|
1, /* Heap section will be readable. */
|
|
1, /* Heap section will be writable. */
|
|
0, /* Heap section will not be executable. */
|
|
1, /* Heap section will be modified. */
|
|
obfd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
gcore_copy_callback (bfd *obfd, asection *osec, void *ignored)
|
|
{
|
|
bfd_size_type size, total_size = bfd_section_size (obfd, osec);
|
|
file_ptr offset = 0;
|
|
struct cleanup *old_chain = NULL;
|
|
void *memhunk;
|
|
|
|
/* Read-only sections are marked; we don't have to copy their contents. */
|
|
if ((bfd_get_section_flags (obfd, osec) & SEC_LOAD) == 0)
|
|
return;
|
|
|
|
/* Only interested in "load" sections. */
|
|
if (strncmp ("load", bfd_section_name (obfd, osec), 4) != 0)
|
|
return;
|
|
|
|
size = min (total_size, MAX_COPY_BYTES);
|
|
memhunk = xmalloc (size);
|
|
old_chain = make_cleanup (xfree, memhunk);
|
|
|
|
while (total_size > 0)
|
|
{
|
|
if (size > total_size)
|
|
size = total_size;
|
|
|
|
if (target_read_memory (bfd_section_vma (obfd, osec) + offset,
|
|
memhunk, size) != 0)
|
|
{
|
|
warning (_("Memory read failed for corefile "
|
|
"section, %s bytes at %s."),
|
|
plongest (size),
|
|
paddress (target_gdbarch (), bfd_section_vma (obfd, osec)));
|
|
break;
|
|
}
|
|
if (!bfd_set_section_contents (obfd, osec, memhunk, offset, size))
|
|
{
|
|
warning (_("Failed to write corefile contents (%s)."),
|
|
bfd_errmsg (bfd_get_error ()));
|
|
break;
|
|
}
|
|
|
|
total_size -= size;
|
|
offset += size;
|
|
}
|
|
|
|
do_cleanups (old_chain); /* Frees MEMHUNK. */
|
|
}
|
|
|
|
static int
|
|
gcore_memory_sections (bfd *obfd)
|
|
{
|
|
/* Try gdbarch method first, then fall back to target method. */
|
|
if (!gdbarch_find_memory_regions_p (target_gdbarch ())
|
|
|| gdbarch_find_memory_regions (target_gdbarch (),
|
|
gcore_create_callback, obfd) != 0)
|
|
{
|
|
if (target_find_memory_regions (gcore_create_callback, obfd) != 0)
|
|
return 0; /* FIXME: error return/msg? */
|
|
}
|
|
|
|
/* Record phdrs for section-to-segment mapping. */
|
|
bfd_map_over_sections (obfd, make_output_phdrs, NULL);
|
|
|
|
/* Copy memory region contents. */
|
|
bfd_map_over_sections (obfd, gcore_copy_callback, NULL);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
|
extern initialize_file_ftype _initialize_gcore;
|
|
|
|
void
|
|
_initialize_gcore (void)
|
|
{
|
|
add_com ("generate-core-file", class_files, gcore_command, _("\
|
|
Save a core file with the current state of the debugged process.\n\
|
|
Argument is optional filename. Default filename is 'core.<process_id>'."));
|
|
|
|
add_com_alias ("gcore", "generate-core-file", class_files, 1);
|
|
}
|