binutils-gdb/gdb/gdb_bfd.h

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* dwarf2read.c (try_open_dwo_file): Use gdb_bfd_ref and gdb_bfd_unref. (free_dwo_file): Use gdb_bfd_unref. * cli/cli-dump.c: Include gdb_bfd.h. (bfd_openw_with_cleanup): Use gdb_bfd_ref. (bfd_openr_with_cleanup): Likewise. * windows-nat.c (windows_make_so): Use gdb_bfd_ref, gdb_bfd_unref. * utils.c: Include gdb_bfd.h. (do_bfd_close_cleanup): Use gdb_bfd_unref. * symfile.c: Include gdb_bfd.h. (separate_debug_file_exists): Use gdb_bfd_unref. (bfd_open_maybe_remote): Use gdb_bfd_ref. (symfile_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. (generic_load): Use gdb_bfd_ref. (reread_symbols): Use gdb_bfd_unref. * symfile-mem.c: Include gdb_bfd.h. (symbol_file_add_from_memory): Use make_cleanup_bfd_close. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. * solib.c: Include gdb_bfd.h. (solib_bfd_fopen): Use gdb_bfd_ref. (solib_bfd_open): Use gdb_bfd_unref. (free_so_symbols): Use gdb_bfd_unref. (reload_shared_libraries_1): Use gdb_bfd_unref. * solib-spu.c: Include gdb_bfd.h. (spu_bfd_fopen): Use gdb_bfd_ref, gdb_bfd_unref. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_ref, gdb_bfd_unref. * solib-frv.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-dsbt.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-darwin.c: Include gdb_bfd.h. (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_ref, gdb_bfd_unref. (darwin_bfd_open): Use gdb_bfd_unref. * rs6000-nat.c (add_vmap): Use gdb_bfd_ref, gdb_bfd_unref. * remote-mips.c: Include gdb_bfd.h. (mips_load_srec): Use gdb_bfd_ref. (pmon_load_fast): Use gdb_bfd_ref. * remote-m32r-sdi.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. * record.c: Include gdb_bfd.h. (record_save_cleanups): Use gdb_bfd_unref. (cmd_record_save): Use gdb_bfd_unref. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_ref, gdb_bfd_unref. * objfiles.h (gdb_bfd_close_or_warn): Remove. (gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.h. * objfiles.c: Include gdb_bfd.h. (free_objfile): Use gdb_bfd_unref. (gdb_bfd_close_or_warn, gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.c. * machoread.c (macho_add_oso_symfile): Use gdb_bfd_unref. (macho_symfile_read_all_oso): Use gdb_bfd_ref, gdb_bfd_unref. (macho_check_dsym): Likewise. * m32r-rom.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. (m32r_upload_command): Use gdb_bfd_ref. * jit.c: Include gdb_bfd.h. (jit_bfd_try_read_symtab): Use gdb_bfd_ref, gdb_bfd_unref. * gdb_bfd.h: New file. * gdb_bfd.c: New file. * gcore.c: Include gdb_bfd.h. (create_gcore_bfd): Use gdb_bfd_ref. (do_bfd_delete_cleanup): Use gdb_bfd_unref. (gcore_command): Use gdb_bfd_unref. * exec.c: Include gdb_bfd.h. (exec_close): Use gdb_bfd_unref. (exec_close_1): Use gdb_bfd_unref. (exec_file_attach): Use gdb_bfd_ref. * elfread.c: Include gdb_bfd.h. (build_id_verify): Use gdb_bfd_unref. * dsrec.c: Include gdb_bfd.h. (load_srec): Use gdb_bfd_ref. * corelow.c: Include gdb_bfd.h. (core_close): Use gdb_bfd_unref. (core_open): Use gdb_bfd_ref. * bfd-target.c: Include gdb_bfd.h. (target_bfd_xclose): Use gdb_bfd_unref. (target_bfd_reopen): Use gdb_bfd_ref. * Makefile.in (SFILES): Add gdb_bfd.c. (HFILES_NO_SRCDIR): Add gdb_bfd.h. (COMMON_OBS): Add gdb_bfd.o.
2012-07-19 03:33:34 +08:00
/* Definitions for BFD wrappers used by GDB.
Copyright (C) 2011-2024 Free Software Foundation, Inc.
* dwarf2read.c (try_open_dwo_file): Use gdb_bfd_ref and gdb_bfd_unref. (free_dwo_file): Use gdb_bfd_unref. * cli/cli-dump.c: Include gdb_bfd.h. (bfd_openw_with_cleanup): Use gdb_bfd_ref. (bfd_openr_with_cleanup): Likewise. * windows-nat.c (windows_make_so): Use gdb_bfd_ref, gdb_bfd_unref. * utils.c: Include gdb_bfd.h. (do_bfd_close_cleanup): Use gdb_bfd_unref. * symfile.c: Include gdb_bfd.h. (separate_debug_file_exists): Use gdb_bfd_unref. (bfd_open_maybe_remote): Use gdb_bfd_ref. (symfile_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. (generic_load): Use gdb_bfd_ref. (reread_symbols): Use gdb_bfd_unref. * symfile-mem.c: Include gdb_bfd.h. (symbol_file_add_from_memory): Use make_cleanup_bfd_close. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. * solib.c: Include gdb_bfd.h. (solib_bfd_fopen): Use gdb_bfd_ref. (solib_bfd_open): Use gdb_bfd_unref. (free_so_symbols): Use gdb_bfd_unref. (reload_shared_libraries_1): Use gdb_bfd_unref. * solib-spu.c: Include gdb_bfd.h. (spu_bfd_fopen): Use gdb_bfd_ref, gdb_bfd_unref. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_ref, gdb_bfd_unref. * solib-frv.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-dsbt.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-darwin.c: Include gdb_bfd.h. (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_ref, gdb_bfd_unref. (darwin_bfd_open): Use gdb_bfd_unref. * rs6000-nat.c (add_vmap): Use gdb_bfd_ref, gdb_bfd_unref. * remote-mips.c: Include gdb_bfd.h. (mips_load_srec): Use gdb_bfd_ref. (pmon_load_fast): Use gdb_bfd_ref. * remote-m32r-sdi.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. * record.c: Include gdb_bfd.h. (record_save_cleanups): Use gdb_bfd_unref. (cmd_record_save): Use gdb_bfd_unref. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_ref, gdb_bfd_unref. * objfiles.h (gdb_bfd_close_or_warn): Remove. (gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.h. * objfiles.c: Include gdb_bfd.h. (free_objfile): Use gdb_bfd_unref. (gdb_bfd_close_or_warn, gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.c. * machoread.c (macho_add_oso_symfile): Use gdb_bfd_unref. (macho_symfile_read_all_oso): Use gdb_bfd_ref, gdb_bfd_unref. (macho_check_dsym): Likewise. * m32r-rom.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. (m32r_upload_command): Use gdb_bfd_ref. * jit.c: Include gdb_bfd.h. (jit_bfd_try_read_symtab): Use gdb_bfd_ref, gdb_bfd_unref. * gdb_bfd.h: New file. * gdb_bfd.c: New file. * gcore.c: Include gdb_bfd.h. (create_gcore_bfd): Use gdb_bfd_ref. (do_bfd_delete_cleanup): Use gdb_bfd_unref. (gcore_command): Use gdb_bfd_unref. * exec.c: Include gdb_bfd.h. (exec_close): Use gdb_bfd_unref. (exec_close_1): Use gdb_bfd_unref. (exec_file_attach): Use gdb_bfd_ref. * elfread.c: Include gdb_bfd.h. (build_id_verify): Use gdb_bfd_unref. * dsrec.c: Include gdb_bfd.h. (load_srec): Use gdb_bfd_ref. * corelow.c: Include gdb_bfd.h. (core_close): Use gdb_bfd_unref. (core_open): Use gdb_bfd_ref. * bfd-target.c: Include gdb_bfd.h. (target_bfd_xclose): Use gdb_bfd_unref. (target_bfd_reopen): Use gdb_bfd_ref. * Makefile.in (SFILES): Add gdb_bfd.c. (HFILES_NO_SRCDIR): Add gdb_bfd.h. (COMMON_OBS): Add gdb_bfd.o.
2012-07-19 03:33:34 +08:00
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef GDB_BFD_H
#define GDB_BFD_H
#include "registry.h"
#include "gdbsupport/byte-vector.h"
#include "gdbsupport/function-view.h"
Rename common to gdbsupport This is the next patch in the ongoing series to move gdbsever to the top level. This patch just renames the "common" directory. The idea is to do this move in two parts: first rename the directory (this patch), then move the directory to the top. This approach makes the patches a bit more tractable. I chose the name "gdbsupport" for the directory. However, as this patch was largely written by sed, we could pick a new name without too much difficulty. Tested by the buildbot. gdb/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * contrib/ari/gdb_ari.sh: Change common to gdbsupport. * configure: Rebuild. * configure.ac: Change common to gdbsupport. * gdbsupport: Rename from common. * acinclude.m4: Change common to gdbsupport. * Makefile.in (CONFIG_SRC_SUBDIR, COMMON_SFILES) (HFILES_NO_SRCDIR, stamp-version, ALLDEPFILES): Change common to gdbsupport. * aarch64-tdep.c, ada-lang.c, ada-lang.h, agent.c, alloc.c, amd64-darwin-tdep.c, amd64-dicos-tdep.c, amd64-fbsd-nat.c, amd64-fbsd-tdep.c, amd64-linux-nat.c, amd64-linux-tdep.c, amd64-nbsd-tdep.c, amd64-obsd-tdep.c, amd64-sol2-tdep.c, amd64-tdep.c, amd64-windows-tdep.c, arch-utils.c, arch/aarch64-insn.c, arch/aarch64.c, arch/aarch64.h, arch/amd64.c, arch/amd64.h, arch/arm-get-next-pcs.c, arch/arm-linux.c, arch/arm.c, arch/i386.c, arch/i386.h, arch/ppc-linux-common.c, arch/riscv.c, arch/riscv.h, arch/tic6x.c, arm-tdep.c, auto-load.c, auxv.c, ax-gdb.c, ax-general.c, ax.h, breakpoint.c, breakpoint.h, btrace.c, btrace.h, build-id.c, build-id.h, c-lang.h, charset.c, charset.h, cli/cli-cmds.c, cli/cli-cmds.h, cli/cli-decode.c, cli/cli-dump.c, cli/cli-option.h, cli/cli-script.c, coff-pe-read.c, command.h, compile/compile-c-support.c, compile/compile-c.h, compile/compile-cplus-symbols.c, compile/compile-cplus-types.c, compile/compile-cplus.h, compile/compile-loc2c.c, compile/compile.c, completer.c, completer.h, contrib/ari/gdb_ari.sh, corefile.c, corelow.c, cp-support.c, cp-support.h, cp-valprint.c, csky-tdep.c, ctf.c, darwin-nat.c, debug.c, defs.h, disasm-selftests.c, disasm.c, disasm.h, dtrace-probe.c, dwarf-index-cache.c, dwarf-index-cache.h, dwarf-index-write.c, dwarf2-frame.c, dwarf2expr.c, dwarf2loc.c, dwarf2read.c, event-loop.c, event-top.c, exceptions.c, exec.c, extension.h, fbsd-nat.c, features/aarch64-core.c, features/aarch64-fpu.c, features/aarch64-pauth.c, features/aarch64-sve.c, features/i386/32bit-avx.c, features/i386/32bit-avx512.c, features/i386/32bit-core.c, features/i386/32bit-linux.c, features/i386/32bit-mpx.c, features/i386/32bit-pkeys.c, features/i386/32bit-segments.c, features/i386/32bit-sse.c, features/i386/64bit-avx.c, features/i386/64bit-avx512.c, features/i386/64bit-core.c, features/i386/64bit-linux.c, features/i386/64bit-mpx.c, features/i386/64bit-pkeys.c, features/i386/64bit-segments.c, features/i386/64bit-sse.c, features/i386/x32-core.c, features/riscv/32bit-cpu.c, features/riscv/32bit-csr.c, features/riscv/32bit-fpu.c, features/riscv/64bit-cpu.c, features/riscv/64bit-csr.c, features/riscv/64bit-fpu.c, features/tic6x-c6xp.c, features/tic6x-core.c, features/tic6x-gp.c, filename-seen-cache.h, findcmd.c, findvar.c, fork-child.c, gcore.c, gdb_bfd.c, gdb_bfd.h, gdb_proc_service.h, gdb_regex.c, gdb_select.h, gdb_usleep.c, gdbarch-selftests.c, gdbthread.h, gdbtypes.h, gnu-nat.c, go32-nat.c, guile/guile.c, guile/scm-ports.c, guile/scm-safe-call.c, guile/scm-type.c, i386-fbsd-nat.c, i386-fbsd-tdep.c, i386-go32-tdep.c, i386-linux-nat.c, i386-linux-tdep.c, i386-tdep.c, i387-tdep.c, ia64-libunwind-tdep.c, ia64-linux-nat.c, inf-child.c, inf-ptrace.c, infcall.c, infcall.h, infcmd.c, inferior-iter.h, inferior.c, inferior.h, inflow.c, inflow.h, infrun.c, infrun.h, inline-frame.c, language.h, linespec.c, linux-fork.c, linux-nat.c, linux-tdep.c, linux-thread-db.c, location.c, machoread.c, macrotab.h, main.c, maint.c, maint.h, memattr.c, memrange.h, mi/mi-cmd-break.h, mi/mi-cmd-env.c, mi/mi-cmd-stack.c, mi/mi-cmd-var.c, mi/mi-interp.c, mi/mi-main.c, mi/mi-parse.h, minsyms.c, mips-linux-tdep.c, namespace.h, nat/aarch64-linux-hw-point.c, nat/aarch64-linux-hw-point.h, nat/aarch64-linux.c, nat/aarch64-sve-linux-ptrace.c, nat/amd64-linux-siginfo.c, nat/fork-inferior.c, nat/linux-btrace.c, nat/linux-btrace.h, nat/linux-namespaces.c, nat/linux-nat.h, nat/linux-osdata.c, nat/linux-personality.c, nat/linux-procfs.c, nat/linux-ptrace.c, nat/linux-ptrace.h, nat/linux-waitpid.c, nat/mips-linux-watch.c, nat/mips-linux-watch.h, nat/ppc-linux.c, nat/x86-dregs.c, nat/x86-dregs.h, nat/x86-linux-dregs.c, nat/x86-linux.c, nto-procfs.c, nto-tdep.c, objfile-flags.h, objfiles.c, objfiles.h, obsd-nat.c, observable.h, osdata.c, p-valprint.c, parse.c, parser-defs.h, ppc-linux-nat.c, printcmd.c, probe.c, proc-api.c, procfs.c, producer.c, progspace.h, psymtab.h, python/py-framefilter.c, python/py-inferior.c, python/py-ref.h, python/py-type.c, python/python.c, record-btrace.c, record-full.c, record.c, record.h, regcache-dump.c, regcache.c, regcache.h, remote-fileio.c, remote-fileio.h, remote-sim.c, remote.c, riscv-tdep.c, rs6000-aix-tdep.c, rust-exp.y, s12z-tdep.c, selftest-arch.c, ser-base.c, ser-event.c, ser-pipe.c, ser-tcp.c, ser-unix.c, skip.c, solib-aix.c, solib-target.c, solib.c, source-cache.c, source.c, source.h, sparc-nat.c, spu-linux-nat.c, stack.c, stap-probe.c, symfile-add-flags.h, symfile.c, symfile.h, symtab.c, symtab.h, target-descriptions.c, target-descriptions.h, target-memory.c, target.c, target.h, target/waitstatus.c, target/waitstatus.h, thread-iter.h, thread.c, tilegx-tdep.c, top.c, top.h, tracefile-tfile.c, tracefile.c, tracepoint.c, tracepoint.h, tui/tui-io.c, ui-file.c, ui-out.h, unittests/array-view-selftests.c, unittests/child-path-selftests.c, unittests/cli-utils-selftests.c, unittests/common-utils-selftests.c, unittests/copy_bitwise-selftests.c, unittests/environ-selftests.c, unittests/format_pieces-selftests.c, unittests/function-view-selftests.c, unittests/lookup_name_info-selftests.c, unittests/memory-map-selftests.c, unittests/memrange-selftests.c, unittests/mkdir-recursive-selftests.c, unittests/observable-selftests.c, unittests/offset-type-selftests.c, unittests/optional-selftests.c, unittests/parse-connection-spec-selftests.c, unittests/ptid-selftests.c, unittests/rsp-low-selftests.c, unittests/scoped_fd-selftests.c, unittests/scoped_mmap-selftests.c, unittests/scoped_restore-selftests.c, unittests/string_view-selftests.c, unittests/style-selftests.c, unittests/tracepoint-selftests.c, unittests/unpack-selftests.c, unittests/utils-selftests.c, unittests/xml-utils-selftests.c, utils.c, utils.h, valarith.c, valops.c, valprint.c, value.c, value.h, varobj.c, varobj.h, windows-nat.c, x86-linux-nat.c, xml-support.c, xml-support.h, xml-tdesc.h, xstormy16-tdep.c, xtensa-linux-nat.c, dwarf2read.h: Change common to gdbsupport. gdb/gdbserver/ChangeLog 2019-07-09 Tom Tromey <tom@tromey.com> * configure: Rebuild. * configure.ac: Change common to gdbsupport. * acinclude.m4: Change common to gdbsupport. * Makefile.in (SFILES, OBS, GDBREPLAY_OBS, IPA_OBJS) (version-generated.c, gdbsupport/%-ipa.o, gdbsupport/%.o): Change common to gdbsupport. * ax.c, event-loop.c, fork-child.c, gdb_proc_service.h, gdbreplay.c, gdbthread.h, hostio-errno.c, hostio.c, i387-fp.c, inferiors.c, inferiors.h, linux-aarch64-tdesc-selftest.c, linux-amd64-ipa.c, linux-i386-ipa.c, linux-low.c, linux-tic6x-low.c, linux-x86-low.c, linux-x86-tdesc-selftest.c, linux-x86-tdesc.c, lynx-i386-low.c, lynx-low.c, mem-break.h, nto-x86-low.c, regcache.c, regcache.h, remote-utils.c, server.c, server.h, spu-low.c, symbol.c, target.h, tdesc.c, tdesc.h, thread-db.c, tracepoint.c, win32-i386-low.c, win32-low.c: Change common to gdbsupport.
2019-05-06 10:29:24 +08:00
#include "gdbsupport/gdb_ref_ptr.h"
gdb: introduce iterator_range, remove next_adapter I was always a bit confused by next_adapter, because it kind of mixes the element type and the iterator type. In reality, it is not much more than a class that wraps two iterators (begin and end). However, it assumes that: - you can construct the begin iterator by passing a pointer to the first element of the iterable - you can default-construct iterator to make the end iterator I think that by generalizing it a little bit, we can re-use it at more places. Rename it to "iterator_range". I think it describes a bit better: it's a range made by wrapping a begin and end iterator. Move it to its own file, since it's not related to next_iterator anymore. iterator_range has two constructors. The variadic one, where arguments are forwarded to construct the underlying begin iterator. The end iterator is constructed through default construction. This is a generalization of what we have today. There is another constructor which receives already constructed begin and end iterators, useful if the end iterator can't be obtained by default-construction. Or, if you wanted to make a range that does not end at the end of the container, you could pass any iterator as the "end". This generalization allows removing some "range" classes, like all_inferiors_range. These classes existed only to pass some arguments when constructing the begin iterator. With iterator_range, those same arguments are passed to the iterator_range constructed and then forwarded to the constructed begin iterator. There is a small functional difference in how iterator_range works compared to next_adapter. next_adapter stored the pointer it received as argument and constructeur an iterator in the `begin` method. iterator_range constructs the begin iterator and stores it as a member. Its `begin` method returns a copy of that iterator. With just iterator_range, uses of next_adapter<foo> would be replaced with: using foo_iterator = next_iterator<foo>; using foo_range = iterator_range<foo_iterator>; However, I added a `next_range` wrapper as a direct replacement for next_adapter<foo>. IMO, next_range is a slightly better name than next_adapter. The rest of the changes are applications of this new class. gdbsupport/ChangeLog: * next-iterator.h (class next_adapter): Remove. * iterator-range.h: New. gdb/ChangeLog: * breakpoint.h (bp_locations_range): Remove. (bp_location_range): New. (struct breakpoint) <locations>: Adjust type. (breakpoint_range): Use iterator_range. (tracepoint_range): Use iterator_range. * breakpoint.c (breakpoint::locations): Adjust return type. * gdb_bfd.h (gdb_bfd_section_range): Use iterator_range. * gdbthread.h (all_threads_safe): Pass argument to all_threads_safe_range. * inferior-iter.h (all_inferiors_range): Use iterator_range. (all_inferiors_safe_range): Use iterator_range. (all_non_exited_inferiors_range): Use iterator_range. * inferior.h (all_inferiors, all_non_exited_inferiors): Pass inferior_list as argument. * objfiles.h (struct objfile) <compunits_range>: Remove. <compunits>: Return compunit_symtab_range. * progspace.h (unwrapping_objfile_iterator) <unwrapping_objfile_iterator>: Take parameter by value. (unwrapping_objfile_range): Use iterator_range. (struct program_space) <objfiles_range>: Define with "using". <objfiles>: Adjust. <objfiles_safe_range>: Define with "using". <objfiles_safe>: Adjust. <solibs>: Return so_list_range, define here. * progspace.c (program_space::solibs): Remove. * psymtab.h (class psymtab_storage) <partial_symtab_iterator>: New. <partial_symtab_range>: Use iterator_range. * solist.h (so_list_range): New. * symtab.h (compunit_symtab_range): New. (symtab_range): New. (compunit_filetabs): Change to a function. * thread-iter.h (inf_threads_range, inf_non_exited_threads_range, safe_inf_threads_range, all_threads_safe_range): Use iterator_range. * top.h (ui_range): New. (all_uis): Use ui_range. Change-Id: Ib7a9d2a3547f45f01aa1c6b24536ba159db9b854
2021-06-19 00:00:38 +08:00
#include "gdbsupport/iterator-range.h"
#include "gdbsupport/next-iterator.h"
/* A registry adaptor for BFD. This arranges to store the registry in
gdb's per-BFD data, which is stored as the bfd_usrdata. */
template<>
struct registry_accessor<bfd>
{
static registry<bfd> *get (bfd *abfd);
};
/* If supplied a path starting with this sequence, gdb_bfd_open will
open BFDs using target fileio operations. */
#define TARGET_SYSROOT_PREFIX "target:"
/* Returns nonzero if NAME starts with TARGET_SYSROOT_PREFIX, zero
otherwise. */
int is_target_filename (const char *name);
/* An overload for strings. */
static inline int
is_target_filename (const std::string &name)
{
return is_target_filename (name.c_str ());
}
/* Returns nonzero if the filename associated with ABFD starts with
TARGET_SYSROOT_PREFIX, zero otherwise. */
int gdb_bfd_has_target_filename (struct bfd *abfd);
Use class to manage BFD reference counts This introduces a new specialization of gdb::ref_ptr that can be used to manage BFD reference counts. Then it changes most places in gdb to use this new class, rather than explicit reference-counting or cleanups. This patch removes make_cleanup_bfd_unref. If you look you will see a couple of spots using "release" where a use of gdb_bfd_ref_ptr would be cleaner. These will be fixed in the next patch. I think this patch fixes some latent bugs. For example, it seems to me that previously objfpy_add_separate_debug_file leaked a BFD. I'm not 100% certain that the macho_symfile_read_all_oso change is correct. The existing code here is hard for me to follow. One goal of this sort of automated reference counting, though, is to make it more difficult to make logic errors; so hopefully the code is clear now. 2017-01-10 Tom Tromey <tom@tromey.com> * windows-tdep.c (windows_xfer_shared_library): Update. * windows-nat.c (windows_make_so): Update. * utils.h (make_cleanup_bfd_unref): Remove. * utils.c (do_bfd_close_cleanup, make_cleanup_bfd_unref): Remove. * symfile.h (symfile_bfd_open) (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * symfile.c (read_symbols, symbol_file_add) (separate_debug_file_exists): Update. (symfile_bfd_open): Return gdb_bfd_ref_ptr. (generic_load, reread_symbols): Update. * symfile-mem.c (symbol_file_add_from_memory): Update. * spu-linux-nat.c (spu_bfd_open): Return gdb_bfd_ref_ptr. (spu_symbol_file_add_from_memory): Update. * solist.h (struct target_so_ops) <bfd_open>: Return gdb_bfd_ref_ptr. (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. * solib.c (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. (solib_map_sections, reload_shared_libraries_1): Update. * solib-svr4.c (enable_break): Update. * solib-spu.c (spu_bfd_fopen): Return gdb_bfd_ref_ptr. * solib-frv.c (enable_break2): Update. * solib-dsbt.c (enable_break): Update. * solib-darwin.c (gdb_bfd_mach_o_fat_extract): Return gdb_bfd_ref_ptr. (darwin_solib_get_all_image_info_addr_at_init): Update. (darwin_bfd_open): Return gdb_bfd_ref_ptr. * solib-aix.c (solib_aix_bfd_open): Return gdb_bfd_ref_ptr. * record-full.c (record_full_save): Update. * python/py-objfile.c (objfpy_add_separate_debug_file): Update. * procfs.c (insert_dbx_link_bpt_in_file): Update. * minidebug.c (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * machoread.c (macho_add_oso_symfile): Change abfd to gdb_bfd_ref_ptr. (macho_symfile_read_all_oso): Update. (macho_check_dsym): Return gdb_bfd_ref_ptr. (macho_symfile_read): Update. * jit.c (bfd_open_from_target_memory): Return gdb_bfd_ref_ptr. (jit_bfd_try_read_symtab): Update. * gdb_bfd.h (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. (gdb_bfd_ref_policy): New struct. (gdb_bfd_ref_ptr): New typedef. * gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. * gcore.h (create_gcore_bfd): Return gdb_bfd_ref_ptr. * gcore.c (create_gcore_bfd): Return gdb_bfd_ref_ptr. (gcore_command): Update. * exec.c (exec_file_attach): Update. * elfread.c (elf_symfile_read): Update. * dwarf2read.c (dwarf2_get_dwz_file): Update. (try_open_dwop_file, open_dwo_file): Return gdb_bfd_ref_ptr. (open_and_init_dwo_file): Update. (open_dwp_file): Return gdb_bfd_ref_ptr. (open_and_init_dwp_file): Update. * corelow.c (core_open): Update. * compile/compile-object-load.c (compile_object_load): Update. * common/gdb_ref_ptr.h (ref_ptr::operator->): New operator. * coffread.c (coff_symfile_read): Update. * cli/cli-dump.c (bfd_openr_or_error, bfd_openw_or_error): Return gdb_bfd_ref_ptr. Rename. (dump_bfd_file, restore_command): Update. * build-id.h (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. * build-id.c (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. (find_separate_debug_file_by_buildid): Update.
2016-11-22 02:12:23 +08:00
/* Increment the reference count of ABFD. It is fine for ABFD to be
NULL; in this case the function does nothing. */
void gdb_bfd_ref (struct bfd *abfd);
/* Decrement the reference count of ABFD. If this is the last
reference, ABFD will be freed. If ABFD is NULL, this function does
nothing. */
void gdb_bfd_unref (struct bfd *abfd);
/* A policy class for gdb::ref_ptr for BFD reference counting. */
struct gdb_bfd_ref_policy
{
static void incref (struct bfd *abfd)
{
gdb_bfd_ref (abfd);
}
static void decref (struct bfd *abfd)
{
gdb_bfd_unref (abfd);
}
};
/* A gdb::ref_ptr that has been specialized for BFD objects. */
typedef gdb::ref_ptr<struct bfd, gdb_bfd_ref_policy> gdb_bfd_ref_ptr;
/* Open a read-only (FOPEN_RB) BFD given arguments like bfd_fopen.
If NAME starts with TARGET_SYSROOT_PREFIX then the BFD will be
opened using target fileio operations if necessary. Returns NULL
on error. On success, returns a new reference to the BFD. BFDs
returned by this call are shared among all callers opening the same
file. If FD is not -1, then after this call it is owned by BFD.
If the BFD was not accessed using target fileio operations then the
filename associated with the BFD and accessible with
bfd_get_filename will not be exactly NAME but rather NAME with
Make exec-file-mismatch compare build IDs The patch makes GDB do exec-file-mismatch validation by comparing build IDs instead of the current method of comparing filenames. Currently, the exec-file-mismatch feature simply compares filenames to decide whether the exec file loaded in gdb and the exec file the target reports is running match. This causes false positives when remote debugging, because it'll often be the case that the paths in the host and the target won't match. And of course misses the case of the files having the same name but being actually different files (e.g., different builds). This also broke many testcases when running against gdbserver, causing tests to be skipped like (here native-extended-gdbserver): (gdb) run Starting program: /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink-filelink warning: Mismatch between current exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink-filelink and automatically determined exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink exec-file-mismatch handling is currently "ask" Load new symbol table from "/home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink"? (y or n) UNTESTED: gdb.base/argv0-symlink.exp: could not run to main or to fail like (here native-gdbserver): (gdb) spawn /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/../../gdbserver/gdbserver --once localhost:2346 /home/pedro/gdb/binutils-gdb/build/gdb/te stsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x Process /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x created; pid = 20040 Listening on port 2346 target remote localhost:2346 Remote debugging using localhost:2346 warning: Mismatch between current exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/temp/19968/skip_btrace_tests-19968.x and automatically determined exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x exec-file-mismatch handling is currently "ask" Load new symbol table from "/home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x"? (y or n) Quit (gdb) UNSUPPORTED: gdb.btrace/buffer-size.exp: target does not support record-btrace The former case is about GDB not realizing the two files are the same, because one of the them is a symlink to the other. The latter case is about GDB realizing that one file is a copy of the other. Over the years, the toolchain has settled on build ID matching being the canonical method to match core dumps to executables, and executables with no debug info to their debug info. This patch makes us use build IDs to match the running image of a binary with its version loaded in gdb, which may or may not have debug info. This is very much like the core dump/executable matching. The change to gdb_bfd_open is necessary to get rid of the "transfers from remote targets can be slow" warning when we open the remote file to read its build ID: (gdb) r Starting program: /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/break/break Reading /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink from remote target... warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ warning: Mismatch between current exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/break/break and automatically determined exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink exec-file-mismatch handling is currently "ask" Load new symbol table from "/home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink"? (y or n) While trying this out, I was worried that bfd would read a lot of stuff from the binary in order to extract the build ID, making it potentially slow, but turns out we don't read all that much. Maybe a couple hundred bytes, and most of it seemingly is the read-ahead cache. So I'm not worried about that. Otherwise I'd consider whether a new qXfer:buildid:read would be better. But I'm happy that we seemingly don't need to worry about it. gdb/ChangeLog: 2020-05-19 Pedro Alves <palves@redhat.com> * NEWS (set exec-file-mismatch): Adjust entry. * exec.c: Include "build-id.h". (validate_exec_file): Try to match build IDs instead of filenames. * gdb_bfd.c (struct gdb_bfd_open_closure): New. (gdb_bfd_iovec_fileio_open): Adjust to use gdb_bfd_open_closure and pass down 'warn_if_slow'. (gdb_bfd_open): Add 'warn_if_slow' parameter. Use gdb_bfd_open_closure to pass it down. * gdb_bfd.h (gdb_bfd_open): Add 'warn_if_slow' parameter. gdb/doc/ChangeLog: 2020-05-19 Pedro Alves <palves@redhat.com> * gdb.texinfo (Attach): Update exec-file-mismatch description to mention build IDs. (Separate Debug Files): Add "build id" anchor.
2020-05-20 01:36:24 +08:00
TARGET_SYSROOT_PREFIX stripped. If WARN_IF_SLOW is true, print a
warning message if the file is being accessed over a link that may
be slow. */
gdb_bfd_ref_ptr gdb_bfd_open (const char *name, const char *target,
Make exec-file-mismatch compare build IDs The patch makes GDB do exec-file-mismatch validation by comparing build IDs instead of the current method of comparing filenames. Currently, the exec-file-mismatch feature simply compares filenames to decide whether the exec file loaded in gdb and the exec file the target reports is running match. This causes false positives when remote debugging, because it'll often be the case that the paths in the host and the target won't match. And of course misses the case of the files having the same name but being actually different files (e.g., different builds). This also broke many testcases when running against gdbserver, causing tests to be skipped like (here native-extended-gdbserver): (gdb) run Starting program: /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink-filelink warning: Mismatch between current exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink-filelink and automatically determined exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink exec-file-mismatch handling is currently "ask" Load new symbol table from "/home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink"? (y or n) UNTESTED: gdb.base/argv0-symlink.exp: could not run to main or to fail like (here native-gdbserver): (gdb) spawn /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/../../gdbserver/gdbserver --once localhost:2346 /home/pedro/gdb/binutils-gdb/build/gdb/te stsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x Process /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x created; pid = 20040 Listening on port 2346 target remote localhost:2346 Remote debugging using localhost:2346 warning: Mismatch between current exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/temp/19968/skip_btrace_tests-19968.x and automatically determined exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x exec-file-mismatch handling is currently "ask" Load new symbol table from "/home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.btrace/buffer-size/skip_btrace_tests-19968.x"? (y or n) Quit (gdb) UNSUPPORTED: gdb.btrace/buffer-size.exp: target does not support record-btrace The former case is about GDB not realizing the two files are the same, because one of the them is a symlink to the other. The latter case is about GDB realizing that one file is a copy of the other. Over the years, the toolchain has settled on build ID matching being the canonical method to match core dumps to executables, and executables with no debug info to their debug info. This patch makes us use build IDs to match the running image of a binary with its version loaded in gdb, which may or may not have debug info. This is very much like the core dump/executable matching. The change to gdb_bfd_open is necessary to get rid of the "transfers from remote targets can be slow" warning when we open the remote file to read its build ID: (gdb) r Starting program: /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/break/break Reading /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink from remote target... warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ warning: Mismatch between current exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/break/break and automatically determined exec-file /home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink exec-file-mismatch handling is currently "ask" Load new symbol table from "/home/pedro/gdb/binutils-gdb/build/gdb/testsuite/outputs/gdb.base/argv0-symlink/argv0-symlink"? (y or n) While trying this out, I was worried that bfd would read a lot of stuff from the binary in order to extract the build ID, making it potentially slow, but turns out we don't read all that much. Maybe a couple hundred bytes, and most of it seemingly is the read-ahead cache. So I'm not worried about that. Otherwise I'd consider whether a new qXfer:buildid:read would be better. But I'm happy that we seemingly don't need to worry about it. gdb/ChangeLog: 2020-05-19 Pedro Alves <palves@redhat.com> * NEWS (set exec-file-mismatch): Adjust entry. * exec.c: Include "build-id.h". (validate_exec_file): Try to match build IDs instead of filenames. * gdb_bfd.c (struct gdb_bfd_open_closure): New. (gdb_bfd_iovec_fileio_open): Adjust to use gdb_bfd_open_closure and pass down 'warn_if_slow'. (gdb_bfd_open): Add 'warn_if_slow' parameter. Use gdb_bfd_open_closure to pass it down. * gdb_bfd.h (gdb_bfd_open): Add 'warn_if_slow' parameter. gdb/doc/ChangeLog: 2020-05-19 Pedro Alves <palves@redhat.com> * gdb.texinfo (Attach): Update exec-file-mismatch description to mention build IDs. (Separate Debug Files): Add "build id" anchor.
2020-05-20 01:36:24 +08:00
int fd = -1, bool warn_if_slow = true);
* dwarf2read.c (try_open_dwo_file): Use gdb_bfd_ref and gdb_bfd_unref. (free_dwo_file): Use gdb_bfd_unref. * cli/cli-dump.c: Include gdb_bfd.h. (bfd_openw_with_cleanup): Use gdb_bfd_ref. (bfd_openr_with_cleanup): Likewise. * windows-nat.c (windows_make_so): Use gdb_bfd_ref, gdb_bfd_unref. * utils.c: Include gdb_bfd.h. (do_bfd_close_cleanup): Use gdb_bfd_unref. * symfile.c: Include gdb_bfd.h. (separate_debug_file_exists): Use gdb_bfd_unref. (bfd_open_maybe_remote): Use gdb_bfd_ref. (symfile_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. (generic_load): Use gdb_bfd_ref. (reread_symbols): Use gdb_bfd_unref. * symfile-mem.c: Include gdb_bfd.h. (symbol_file_add_from_memory): Use make_cleanup_bfd_close. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. * solib.c: Include gdb_bfd.h. (solib_bfd_fopen): Use gdb_bfd_ref. (solib_bfd_open): Use gdb_bfd_unref. (free_so_symbols): Use gdb_bfd_unref. (reload_shared_libraries_1): Use gdb_bfd_unref. * solib-spu.c: Include gdb_bfd.h. (spu_bfd_fopen): Use gdb_bfd_ref, gdb_bfd_unref. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_ref, gdb_bfd_unref. * solib-frv.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-dsbt.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-darwin.c: Include gdb_bfd.h. (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_ref, gdb_bfd_unref. (darwin_bfd_open): Use gdb_bfd_unref. * rs6000-nat.c (add_vmap): Use gdb_bfd_ref, gdb_bfd_unref. * remote-mips.c: Include gdb_bfd.h. (mips_load_srec): Use gdb_bfd_ref. (pmon_load_fast): Use gdb_bfd_ref. * remote-m32r-sdi.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. * record.c: Include gdb_bfd.h. (record_save_cleanups): Use gdb_bfd_unref. (cmd_record_save): Use gdb_bfd_unref. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_ref, gdb_bfd_unref. * objfiles.h (gdb_bfd_close_or_warn): Remove. (gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.h. * objfiles.c: Include gdb_bfd.h. (free_objfile): Use gdb_bfd_unref. (gdb_bfd_close_or_warn, gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.c. * machoread.c (macho_add_oso_symfile): Use gdb_bfd_unref. (macho_symfile_read_all_oso): Use gdb_bfd_ref, gdb_bfd_unref. (macho_check_dsym): Likewise. * m32r-rom.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. (m32r_upload_command): Use gdb_bfd_ref. * jit.c: Include gdb_bfd.h. (jit_bfd_try_read_symtab): Use gdb_bfd_ref, gdb_bfd_unref. * gdb_bfd.h: New file. * gdb_bfd.c: New file. * gcore.c: Include gdb_bfd.h. (create_gcore_bfd): Use gdb_bfd_ref. (do_bfd_delete_cleanup): Use gdb_bfd_unref. (gcore_command): Use gdb_bfd_unref. * exec.c: Include gdb_bfd.h. (exec_close): Use gdb_bfd_unref. (exec_close_1): Use gdb_bfd_unref. (exec_file_attach): Use gdb_bfd_ref. * elfread.c: Include gdb_bfd.h. (build_id_verify): Use gdb_bfd_unref. * dsrec.c: Include gdb_bfd.h. (load_srec): Use gdb_bfd_ref. * corelow.c: Include gdb_bfd.h. (core_close): Use gdb_bfd_unref. (core_open): Use gdb_bfd_ref. * bfd-target.c: Include gdb_bfd.h. (target_bfd_xclose): Use gdb_bfd_unref. (target_bfd_reopen): Use gdb_bfd_ref. * Makefile.in (SFILES): Add gdb_bfd.c. (HFILES_NO_SRCDIR): Add gdb_bfd.h. (COMMON_OBS): Add gdb_bfd.o.
2012-07-19 03:33:34 +08:00
/* Mark the CHILD BFD as being a member of PARENT. Also, increment
the reference count of CHILD. Calling this function ensures that
as along as CHILD remains alive, PARENT will as well. Both CHILD
and PARENT must be non-NULL. This can be called more than once
with the same arguments; but it is not allowed to call it for a
single CHILD with different values for PARENT. */
void gdb_bfd_mark_parent (bfd *child, bfd *parent);
/* Mark INCLUDEE as being included by INCLUDER.
This is used to associate the life time of INCLUDEE with INCLUDER.
For example, with Fission, one file can refer to debug info in another
file, and internal tables we build for the main file (INCLUDER) may refer
to data contained in INCLUDEE. Therefore we want to keep INCLUDEE around
at least as long as INCLUDER exists.
Note that this is different than gdb_bfd_mark_parent because in our case
lifetime tracking is based on the "parent" whereas in gdb_bfd_mark_parent
lifetime tracking is based on the "child". Plus in our case INCLUDEE could
have multiple different "parents". */
void gdb_bfd_record_inclusion (bfd *includer, bfd *includee);
Fix gdb segv when objfile can't be opened This fixes PR 16577. This patch changes gdb_bfd_map_section to issue a warning rather than an error if it is unable to read the object file, and sets the size of the section/frame that it attempted to read to 0 on error. The description of gdb_bfd_map_section states that it will try to read or map the contents of the section SECT, and if successful, the section data is returned and *SIZE is set to the size of the section data. This function was throwing an error and leaving *SIZE as-is. Setting the section size to 0 indicates to dwarf2_build_frame_info that there is no data to read, otherwise it will try to read from an invalid frame pointer. Changing the error to a warning allows this to be handled gracefully. Additionally, the error was clobbering the breakpoint output indicating the current frame (function name, arguments, source file, and line number). E.g. Thread 3 "foo" hit Breakpoint 1, BFD: reopening /tmp/jna-1013829440/jna2973250704389291330.tmp: No such file or directory BFD: reopening /tmp/jna-1013829440/jna2973250704389291330.tmp: No such file or directory (gdb) While the "BFD: reopening ..." messages will still appear interspersed in the breakpoint output, the current frame info is now displayed: Thread 3 "foo" hit Breakpoint 1, BFD: reopening /tmp/jna-1013829440/jna1875755897659885075.tmp: No such file or directory BFD: reopening /tmp/jna-1013829440/jna1875755897659885075.tmp: No such file or directory warning: Can't read data for section '.eh_frame' in file '/tmp/jna-1013829440/jna1875755897659885075.tmp' do_something () at file.cpp:80 80 { (gdb)
2017-10-31 06:13:44 +08:00
/* Try to read or map the contents of the section SECT. If successful, the
section data is returned and *SIZE is set to the size of the section data;
bfd_section_* macros This large patch removes the unnecessary bfd parameter from various bfd section macros and functions. The bfd is hardly ever used and if needed for the bfd_set_section_* or bfd_rename_section functions can be found via section->owner except for the com, und, abs, and ind std_section special sections. Those sections shouldn't be modified anyway. The patch also removes various bfd_get_section_<field> macros, replacing their use with bfd_section_<field>, and adds bfd_set_section_lma. I've also fixed a minor bug in gas where compressed section renaming was done directly rather than calling bfd_rename_section. This would have broken bfd_get_section_by_name and similar functions, but that hardly mattered at such a late stage in gas processing. bfd/ * bfd-in.h (bfd_get_section_name, bfd_get_section_vma), (bfd_get_section_lma, bfd_get_section_alignment), (bfd_get_section_size, bfd_get_section_flags), (bfd_get_section_userdata): Delete. (bfd_section_name, bfd_section_size, bfd_section_vma), (bfd_section_lma, bfd_section_alignment): Lose bfd parameter. (bfd_section_flags, bfd_section_userdata): New. (bfd_is_com_section): Rename parameter. * section.c (bfd_set_section_userdata, bfd_set_section_vma), (bfd_set_section_alignment, bfd_set_section_flags, bfd_rename_section), (bfd_set_section_size): Delete bfd parameter, rename section parameter. (bfd_set_section_lma): New. * bfd-in2.h: Regenerate. * mach-o.c (bfd_mach_o_init_section_from_mach_o): Delete bfd param, update callers. * aoutx.h, * bfd.c, * coff-alpha.c, * coff-arm.c, * coff-mips.c, * coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c, * compress.c, * ecoff.c, * elf-eh-frame.c, * elf-hppa.h, * elf-ifunc.c, * elf-m10200.c, * elf-m10300.c, * elf-properties.c, * elf-s390-common.c, * elf-vxworks.c, * elf.c, * elf32-arc.c, * elf32-arm.c, * elf32-avr.c, * elf32-bfin.c, * elf32-cr16.c, * elf32-cr16c.c, * elf32-cris.c, * elf32-crx.c, * elf32-csky.c, * elf32-d10v.c, * elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c, * elf32-ft32.c, * elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c, * elf32-ip2k.c, * elf32-iq2000.c, * elf32-lm32.c, * elf32-m32c.c, * elf32-m32r.c, * elf32-m68hc1x.c, * elf32-m68k.c, * elf32-mcore.c, * elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c, * elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c, * elf32-nios2.c, * elf32-or1k.c, * elf32-ppc.c, * elf32-pru.c, * elf32-rl78.c, * elf32-rx.c, * elf32-s390.c, * elf32-score.c, * elf32-score7.c, * elf32-sh.c, * elf32-spu.c, * elf32-tic6x.c, * elf32-tilepro.c, * elf32-v850.c, * elf32-vax.c, * elf32-visium.c, * elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c, * elf64-bpf.c, * elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mmix.c, * elf64-ppc.c, * elf64-s390.c, * elf64-sparc.c, * elf64-x86-64.c, * elflink.c, * elfnn-aarch64.c, * elfnn-ia64.c, * elfnn-riscv.c, * elfxx-aarch64.c, * elfxx-mips.c, * elfxx-sparc.c, * elfxx-tilegx.c, * elfxx-x86.c, * i386msdos.c, * linker.c, * mach-o.c, * mmo.c, * opncls.c, * pdp11.c, * pei-x86_64.c, * peicode.h, * reloc.c, * section.c, * syms.c, * vms-alpha.c, * xcofflink.c: Update throughout for bfd section macro and function changes. binutils/ * addr2line.c, * bucomm.c, * coffgrok.c, * dlltool.c, * nm.c, * objcopy.c, * objdump.c, * od-elf32_avr.c, * od-macho.c, * od-xcoff.c, * prdbg.c, * rdcoff.c, * rddbg.c, * rescoff.c, * resres.c, * size.c, * srconv.c, * strings.c, * windmc.c: Update throughout for bfd section macro and function changes. gas/ * as.c, * as.h, * dw2gencfi.c, * dwarf2dbg.c, * ecoff.c, * read.c, * stabs.c, * subsegs.c, * subsegs.h, * write.c, * config/obj-coff-seh.c, * config/obj-coff.c, * config/obj-ecoff.c, * config/obj-elf.c, * config/obj-macho.c, * config/obj-som.c, * config/tc-aarch64.c, * config/tc-alpha.c, * config/tc-arc.c, * config/tc-arm.c, * config/tc-avr.c, * config/tc-bfin.c, * config/tc-bpf.c, * config/tc-d10v.c, * config/tc-d30v.c, * config/tc-epiphany.c, * config/tc-fr30.c, * config/tc-frv.c, * config/tc-h8300.c, * config/tc-hppa.c, * config/tc-i386.c, * config/tc-ia64.c, * config/tc-ip2k.c, * config/tc-iq2000.c, * config/tc-lm32.c, * config/tc-m32c.c, * config/tc-m32r.c, * config/tc-m68hc11.c, * config/tc-mep.c, * config/tc-microblaze.c, * config/tc-mips.c, * config/tc-mmix.c, * config/tc-mn10200.c, * config/tc-mn10300.c, * config/tc-msp430.c, * config/tc-mt.c, * config/tc-nds32.c, * config/tc-or1k.c, * config/tc-ppc.c, * config/tc-pru.c, * config/tc-rl78.c, * config/tc-rx.c, * config/tc-s12z.c, * config/tc-s390.c, * config/tc-score.c, * config/tc-score7.c, * config/tc-sh.c, * config/tc-sparc.c, * config/tc-spu.c, * config/tc-tic4x.c, * config/tc-tic54x.c, * config/tc-tic6x.c, * config/tc-tilegx.c, * config/tc-tilepro.c, * config/tc-v850.c, * config/tc-visium.c, * config/tc-wasm32.c, * config/tc-xc16x.c, * config/tc-xgate.c, * config/tc-xstormy16.c, * config/tc-xtensa.c, * config/tc-z8k.c: Update throughout for bfd section macro and function changes. * write.c (compress_debug): Use bfd_rename_section. gdb/ * aarch64-linux-tdep.c, * arm-tdep.c, * auto-load.c, * coff-pe-read.c, * coffread.c, * corelow.c, * dbxread.c, * dicos-tdep.c, * dwarf2-frame.c, * dwarf2read.c, * elfread.c, * exec.c, * fbsd-tdep.c, * gcore.c, * gdb_bfd.c, * gdb_bfd.h, * hppa-tdep.c, * i386-cygwin-tdep.c, * i386-fbsd-tdep.c, * i386-linux-tdep.c, * jit.c, * linux-tdep.c, * machoread.c, * maint.c, * mdebugread.c, * minidebug.c, * mips-linux-tdep.c, * mips-sde-tdep.c, * mips-tdep.c, * mipsread.c, * nto-tdep.c, * objfiles.c, * objfiles.h, * osabi.c, * ppc-linux-tdep.c, * ppc64-tdep.c, * record-btrace.c, * record-full.c, * remote.c, * rs6000-aix-tdep.c, * rs6000-tdep.c, * s390-linux-tdep.c, * s390-tdep.c, * solib-aix.c, * solib-dsbt.c, * solib-frv.c, * solib-spu.c, * solib-svr4.c, * solib-target.c, * spu-linux-nat.c, * spu-tdep.c, * symfile-mem.c, * symfile.c, * symmisc.c, * symtab.c, * target.c, * windows-nat.c, * xcoffread.c, * cli/cli-dump.c, * compile/compile-object-load.c, * mi/mi-interp.c: Update throughout for bfd section macro and function changes. * gcore (gcore_create_callback): Use bfd_set_section_lma. * spu-tdep.c (spu_overlay_new_objfile): Likewise. gprof/ * corefile.c, * symtab.c: Update throughout for bfd section macro and function changes. ld/ * ldcref.c, * ldctor.c, * ldelf.c, * ldlang.c, * pe-dll.c, * emultempl/aarch64elf.em, * emultempl/aix.em, * emultempl/armcoff.em, * emultempl/armelf.em, * emultempl/cr16elf.em, * emultempl/cskyelf.em, * emultempl/m68hc1xelf.em, * emultempl/m68kelf.em, * emultempl/mipself.em, * emultempl/mmix-elfnmmo.em, * emultempl/mmo.em, * emultempl/msp430.em, * emultempl/nios2elf.em, * emultempl/pe.em, * emultempl/pep.em, * emultempl/ppc64elf.em, * emultempl/xtensaelf.em: Update throughout for bfd section macro and function changes. libctf/ * ctf-open-bfd.c: Update throughout for bfd section macro changes. opcodes/ * arc-ext.c: Update throughout for bfd section macro changes. sim/ * common/sim-load.c, * common/sim-utils.c, * cris/sim-if.c, * erc32/func.c, * lm32/sim-if.c, * m32c/load.c, * m32c/trace.c, * m68hc11/interp.c, * ppc/hw_htab.c, * ppc/hw_init.c, * rl78/load.c, * rl78/trace.c, * rx/gdb-if.c, * rx/load.c, * rx/trace.c: Update throughout for bfd section macro changes.
2019-09-16 18:55:17 +08:00
this may not be the same as the size according to bfd_section_size if the
Fix gdb segv when objfile can't be opened This fixes PR 16577. This patch changes gdb_bfd_map_section to issue a warning rather than an error if it is unable to read the object file, and sets the size of the section/frame that it attempted to read to 0 on error. The description of gdb_bfd_map_section states that it will try to read or map the contents of the section SECT, and if successful, the section data is returned and *SIZE is set to the size of the section data. This function was throwing an error and leaving *SIZE as-is. Setting the section size to 0 indicates to dwarf2_build_frame_info that there is no data to read, otherwise it will try to read from an invalid frame pointer. Changing the error to a warning allows this to be handled gracefully. Additionally, the error was clobbering the breakpoint output indicating the current frame (function name, arguments, source file, and line number). E.g. Thread 3 "foo" hit Breakpoint 1, BFD: reopening /tmp/jna-1013829440/jna2973250704389291330.tmp: No such file or directory BFD: reopening /tmp/jna-1013829440/jna2973250704389291330.tmp: No such file or directory (gdb) While the "BFD: reopening ..." messages will still appear interspersed in the breakpoint output, the current frame info is now displayed: Thread 3 "foo" hit Breakpoint 1, BFD: reopening /tmp/jna-1013829440/jna1875755897659885075.tmp: No such file or directory BFD: reopening /tmp/jna-1013829440/jna1875755897659885075.tmp: No such file or directory warning: Can't read data for section '.eh_frame' in file '/tmp/jna-1013829440/jna1875755897659885075.tmp' do_something () at file.cpp:80 80 { (gdb)
2017-10-31 06:13:44 +08:00
section was compressed. The returned section data is associated with the BFD
and will be destroyed when the BFD is destroyed. There is no other way to
free it; for temporary uses of section data, see bfd_malloc_and_get_section.
SECT may not have relocations. If there is an error reading the section,
this issues a warning, sets *SIZE to 0, and returns NULL. */
const gdb_byte *gdb_bfd_map_section (asection *section, bfd_size_type *size);
/* Compute the CRC for ABFD. The CRC is used to find and verify
separate debug files. When successful, this fills in *CRC_OUT and
returns 1. Otherwise, this issues a warning and returns 0. */
int gdb_bfd_crc (struct bfd *abfd, unsigned long *crc_out);
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
/* A wrapper for bfd_fopen that initializes the gdb-specific reference
count. */
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
Use class to manage BFD reference counts This introduces a new specialization of gdb::ref_ptr that can be used to manage BFD reference counts. Then it changes most places in gdb to use this new class, rather than explicit reference-counting or cleanups. This patch removes make_cleanup_bfd_unref. If you look you will see a couple of spots using "release" where a use of gdb_bfd_ref_ptr would be cleaner. These will be fixed in the next patch. I think this patch fixes some latent bugs. For example, it seems to me that previously objfpy_add_separate_debug_file leaked a BFD. I'm not 100% certain that the macho_symfile_read_all_oso change is correct. The existing code here is hard for me to follow. One goal of this sort of automated reference counting, though, is to make it more difficult to make logic errors; so hopefully the code is clear now. 2017-01-10 Tom Tromey <tom@tromey.com> * windows-tdep.c (windows_xfer_shared_library): Update. * windows-nat.c (windows_make_so): Update. * utils.h (make_cleanup_bfd_unref): Remove. * utils.c (do_bfd_close_cleanup, make_cleanup_bfd_unref): Remove. * symfile.h (symfile_bfd_open) (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * symfile.c (read_symbols, symbol_file_add) (separate_debug_file_exists): Update. (symfile_bfd_open): Return gdb_bfd_ref_ptr. (generic_load, reread_symbols): Update. * symfile-mem.c (symbol_file_add_from_memory): Update. * spu-linux-nat.c (spu_bfd_open): Return gdb_bfd_ref_ptr. (spu_symbol_file_add_from_memory): Update. * solist.h (struct target_so_ops) <bfd_open>: Return gdb_bfd_ref_ptr. (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. * solib.c (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. (solib_map_sections, reload_shared_libraries_1): Update. * solib-svr4.c (enable_break): Update. * solib-spu.c (spu_bfd_fopen): Return gdb_bfd_ref_ptr. * solib-frv.c (enable_break2): Update. * solib-dsbt.c (enable_break): Update. * solib-darwin.c (gdb_bfd_mach_o_fat_extract): Return gdb_bfd_ref_ptr. (darwin_solib_get_all_image_info_addr_at_init): Update. (darwin_bfd_open): Return gdb_bfd_ref_ptr. * solib-aix.c (solib_aix_bfd_open): Return gdb_bfd_ref_ptr. * record-full.c (record_full_save): Update. * python/py-objfile.c (objfpy_add_separate_debug_file): Update. * procfs.c (insert_dbx_link_bpt_in_file): Update. * minidebug.c (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * machoread.c (macho_add_oso_symfile): Change abfd to gdb_bfd_ref_ptr. (macho_symfile_read_all_oso): Update. (macho_check_dsym): Return gdb_bfd_ref_ptr. (macho_symfile_read): Update. * jit.c (bfd_open_from_target_memory): Return gdb_bfd_ref_ptr. (jit_bfd_try_read_symtab): Update. * gdb_bfd.h (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. (gdb_bfd_ref_policy): New struct. (gdb_bfd_ref_ptr): New typedef. * gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. * gcore.h (create_gcore_bfd): Return gdb_bfd_ref_ptr. * gcore.c (create_gcore_bfd): Return gdb_bfd_ref_ptr. (gcore_command): Update. * exec.c (exec_file_attach): Update. * elfread.c (elf_symfile_read): Update. * dwarf2read.c (dwarf2_get_dwz_file): Update. (try_open_dwop_file, open_dwo_file): Return gdb_bfd_ref_ptr. (open_and_init_dwo_file): Update. (open_dwp_file): Return gdb_bfd_ref_ptr. (open_and_init_dwp_file): Update. * corelow.c (core_open): Update. * compile/compile-object-load.c (compile_object_load): Update. * common/gdb_ref_ptr.h (ref_ptr::operator->): New operator. * coffread.c (coff_symfile_read): Update. * cli/cli-dump.c (bfd_openr_or_error, bfd_openw_or_error): Return gdb_bfd_ref_ptr. Rename. (dump_bfd_file, restore_command): Update. * build-id.h (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. * build-id.c (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. (find_separate_debug_file_by_buildid): Update.
2016-11-22 02:12:23 +08:00
gdb_bfd_ref_ptr gdb_bfd_fopen (const char *, const char *, const char *, int);
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
/* A wrapper for bfd_openr that initializes the gdb-specific reference
count. */
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
Use class to manage BFD reference counts This introduces a new specialization of gdb::ref_ptr that can be used to manage BFD reference counts. Then it changes most places in gdb to use this new class, rather than explicit reference-counting or cleanups. This patch removes make_cleanup_bfd_unref. If you look you will see a couple of spots using "release" where a use of gdb_bfd_ref_ptr would be cleaner. These will be fixed in the next patch. I think this patch fixes some latent bugs. For example, it seems to me that previously objfpy_add_separate_debug_file leaked a BFD. I'm not 100% certain that the macho_symfile_read_all_oso change is correct. The existing code here is hard for me to follow. One goal of this sort of automated reference counting, though, is to make it more difficult to make logic errors; so hopefully the code is clear now. 2017-01-10 Tom Tromey <tom@tromey.com> * windows-tdep.c (windows_xfer_shared_library): Update. * windows-nat.c (windows_make_so): Update. * utils.h (make_cleanup_bfd_unref): Remove. * utils.c (do_bfd_close_cleanup, make_cleanup_bfd_unref): Remove. * symfile.h (symfile_bfd_open) (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * symfile.c (read_symbols, symbol_file_add) (separate_debug_file_exists): Update. (symfile_bfd_open): Return gdb_bfd_ref_ptr. (generic_load, reread_symbols): Update. * symfile-mem.c (symbol_file_add_from_memory): Update. * spu-linux-nat.c (spu_bfd_open): Return gdb_bfd_ref_ptr. (spu_symbol_file_add_from_memory): Update. * solist.h (struct target_so_ops) <bfd_open>: Return gdb_bfd_ref_ptr. (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. * solib.c (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. (solib_map_sections, reload_shared_libraries_1): Update. * solib-svr4.c (enable_break): Update. * solib-spu.c (spu_bfd_fopen): Return gdb_bfd_ref_ptr. * solib-frv.c (enable_break2): Update. * solib-dsbt.c (enable_break): Update. * solib-darwin.c (gdb_bfd_mach_o_fat_extract): Return gdb_bfd_ref_ptr. (darwin_solib_get_all_image_info_addr_at_init): Update. (darwin_bfd_open): Return gdb_bfd_ref_ptr. * solib-aix.c (solib_aix_bfd_open): Return gdb_bfd_ref_ptr. * record-full.c (record_full_save): Update. * python/py-objfile.c (objfpy_add_separate_debug_file): Update. * procfs.c (insert_dbx_link_bpt_in_file): Update. * minidebug.c (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * machoread.c (macho_add_oso_symfile): Change abfd to gdb_bfd_ref_ptr. (macho_symfile_read_all_oso): Update. (macho_check_dsym): Return gdb_bfd_ref_ptr. (macho_symfile_read): Update. * jit.c (bfd_open_from_target_memory): Return gdb_bfd_ref_ptr. (jit_bfd_try_read_symtab): Update. * gdb_bfd.h (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. (gdb_bfd_ref_policy): New struct. (gdb_bfd_ref_ptr): New typedef. * gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. * gcore.h (create_gcore_bfd): Return gdb_bfd_ref_ptr. * gcore.c (create_gcore_bfd): Return gdb_bfd_ref_ptr. (gcore_command): Update. * exec.c (exec_file_attach): Update. * elfread.c (elf_symfile_read): Update. * dwarf2read.c (dwarf2_get_dwz_file): Update. (try_open_dwop_file, open_dwo_file): Return gdb_bfd_ref_ptr. (open_and_init_dwo_file): Update. (open_dwp_file): Return gdb_bfd_ref_ptr. (open_and_init_dwp_file): Update. * corelow.c (core_open): Update. * compile/compile-object-load.c (compile_object_load): Update. * common/gdb_ref_ptr.h (ref_ptr::operator->): New operator. * coffread.c (coff_symfile_read): Update. * cli/cli-dump.c (bfd_openr_or_error, bfd_openw_or_error): Return gdb_bfd_ref_ptr. Rename. (dump_bfd_file, restore_command): Update. * build-id.h (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. * build-id.c (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. (find_separate_debug_file_by_buildid): Update.
2016-11-22 02:12:23 +08:00
gdb_bfd_ref_ptr gdb_bfd_openr (const char *, const char *);
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
/* A wrapper for bfd_openw that initializes the gdb-specific reference
count. */
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
Use class to manage BFD reference counts This introduces a new specialization of gdb::ref_ptr that can be used to manage BFD reference counts. Then it changes most places in gdb to use this new class, rather than explicit reference-counting or cleanups. This patch removes make_cleanup_bfd_unref. If you look you will see a couple of spots using "release" where a use of gdb_bfd_ref_ptr would be cleaner. These will be fixed in the next patch. I think this patch fixes some latent bugs. For example, it seems to me that previously objfpy_add_separate_debug_file leaked a BFD. I'm not 100% certain that the macho_symfile_read_all_oso change is correct. The existing code here is hard for me to follow. One goal of this sort of automated reference counting, though, is to make it more difficult to make logic errors; so hopefully the code is clear now. 2017-01-10 Tom Tromey <tom@tromey.com> * windows-tdep.c (windows_xfer_shared_library): Update. * windows-nat.c (windows_make_so): Update. * utils.h (make_cleanup_bfd_unref): Remove. * utils.c (do_bfd_close_cleanup, make_cleanup_bfd_unref): Remove. * symfile.h (symfile_bfd_open) (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * symfile.c (read_symbols, symbol_file_add) (separate_debug_file_exists): Update. (symfile_bfd_open): Return gdb_bfd_ref_ptr. (generic_load, reread_symbols): Update. * symfile-mem.c (symbol_file_add_from_memory): Update. * spu-linux-nat.c (spu_bfd_open): Return gdb_bfd_ref_ptr. (spu_symbol_file_add_from_memory): Update. * solist.h (struct target_so_ops) <bfd_open>: Return gdb_bfd_ref_ptr. (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. * solib.c (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. (solib_map_sections, reload_shared_libraries_1): Update. * solib-svr4.c (enable_break): Update. * solib-spu.c (spu_bfd_fopen): Return gdb_bfd_ref_ptr. * solib-frv.c (enable_break2): Update. * solib-dsbt.c (enable_break): Update. * solib-darwin.c (gdb_bfd_mach_o_fat_extract): Return gdb_bfd_ref_ptr. (darwin_solib_get_all_image_info_addr_at_init): Update. (darwin_bfd_open): Return gdb_bfd_ref_ptr. * solib-aix.c (solib_aix_bfd_open): Return gdb_bfd_ref_ptr. * record-full.c (record_full_save): Update. * python/py-objfile.c (objfpy_add_separate_debug_file): Update. * procfs.c (insert_dbx_link_bpt_in_file): Update. * minidebug.c (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * machoread.c (macho_add_oso_symfile): Change abfd to gdb_bfd_ref_ptr. (macho_symfile_read_all_oso): Update. (macho_check_dsym): Return gdb_bfd_ref_ptr. (macho_symfile_read): Update. * jit.c (bfd_open_from_target_memory): Return gdb_bfd_ref_ptr. (jit_bfd_try_read_symtab): Update. * gdb_bfd.h (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. (gdb_bfd_ref_policy): New struct. (gdb_bfd_ref_ptr): New typedef. * gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. * gcore.h (create_gcore_bfd): Return gdb_bfd_ref_ptr. * gcore.c (create_gcore_bfd): Return gdb_bfd_ref_ptr. (gcore_command): Update. * exec.c (exec_file_attach): Update. * elfread.c (elf_symfile_read): Update. * dwarf2read.c (dwarf2_get_dwz_file): Update. (try_open_dwop_file, open_dwo_file): Return gdb_bfd_ref_ptr. (open_and_init_dwo_file): Update. (open_dwp_file): Return gdb_bfd_ref_ptr. (open_and_init_dwp_file): Update. * corelow.c (core_open): Update. * compile/compile-object-load.c (compile_object_load): Update. * common/gdb_ref_ptr.h (ref_ptr::operator->): New operator. * coffread.c (coff_symfile_read): Update. * cli/cli-dump.c (bfd_openr_or_error, bfd_openw_or_error): Return gdb_bfd_ref_ptr. Rename. (dump_bfd_file, restore_command): Update. * build-id.h (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. * build-id.c (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. (find_separate_debug_file_by_buildid): Update.
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gdb_bfd_ref_ptr gdb_bfd_openw (const char *, const char *);
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
/* The base class for BFD "iovec" implementations. This is used by
gdb_bfd_openr_iovec and enables better type safety. */
class gdb_bfd_iovec_base
{
protected:
gdb_bfd_iovec_base () = default;
public:
virtual ~gdb_bfd_iovec_base () = default;
/* The "read" callback. */
virtual file_ptr read (bfd *abfd, void *buffer, file_ptr nbytes,
file_ptr offset) = 0;
/* The "stat" callback. */
virtual int stat (struct bfd *abfd, struct stat *sb) = 0;
};
/* The type of the function used to open a new iovec-based BFD. */
using gdb_iovec_opener_ftype
= gdb::function_view<gdb_bfd_iovec_base * (bfd *)>;
/* A type-safe wrapper for bfd_openr_iovec. */
gdb_bfd_ref_ptr gdb_bfd_openr_iovec (const char *filename, const char *target,
gdb_iovec_opener_ftype open_fn);
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
/* A wrapper for bfd_openr_next_archived_file that initializes the
gdb-specific reference count. */
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
Use class to manage BFD reference counts This introduces a new specialization of gdb::ref_ptr that can be used to manage BFD reference counts. Then it changes most places in gdb to use this new class, rather than explicit reference-counting or cleanups. This patch removes make_cleanup_bfd_unref. If you look you will see a couple of spots using "release" where a use of gdb_bfd_ref_ptr would be cleaner. These will be fixed in the next patch. I think this patch fixes some latent bugs. For example, it seems to me that previously objfpy_add_separate_debug_file leaked a BFD. I'm not 100% certain that the macho_symfile_read_all_oso change is correct. The existing code here is hard for me to follow. One goal of this sort of automated reference counting, though, is to make it more difficult to make logic errors; so hopefully the code is clear now. 2017-01-10 Tom Tromey <tom@tromey.com> * windows-tdep.c (windows_xfer_shared_library): Update. * windows-nat.c (windows_make_so): Update. * utils.h (make_cleanup_bfd_unref): Remove. * utils.c (do_bfd_close_cleanup, make_cleanup_bfd_unref): Remove. * symfile.h (symfile_bfd_open) (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * symfile.c (read_symbols, symbol_file_add) (separate_debug_file_exists): Update. (symfile_bfd_open): Return gdb_bfd_ref_ptr. (generic_load, reread_symbols): Update. * symfile-mem.c (symbol_file_add_from_memory): Update. * spu-linux-nat.c (spu_bfd_open): Return gdb_bfd_ref_ptr. (spu_symbol_file_add_from_memory): Update. * solist.h (struct target_so_ops) <bfd_open>: Return gdb_bfd_ref_ptr. (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. * solib.c (solib_bfd_fopen, solib_bfd_open): Return gdb_bfd_ref_ptr. (solib_map_sections, reload_shared_libraries_1): Update. * solib-svr4.c (enable_break): Update. * solib-spu.c (spu_bfd_fopen): Return gdb_bfd_ref_ptr. * solib-frv.c (enable_break2): Update. * solib-dsbt.c (enable_break): Update. * solib-darwin.c (gdb_bfd_mach_o_fat_extract): Return gdb_bfd_ref_ptr. (darwin_solib_get_all_image_info_addr_at_init): Update. (darwin_bfd_open): Return gdb_bfd_ref_ptr. * solib-aix.c (solib_aix_bfd_open): Return gdb_bfd_ref_ptr. * record-full.c (record_full_save): Update. * python/py-objfile.c (objfpy_add_separate_debug_file): Update. * procfs.c (insert_dbx_link_bpt_in_file): Update. * minidebug.c (find_separate_debug_file_in_section): Return gdb_bfd_ref_ptr. * machoread.c (macho_add_oso_symfile): Change abfd to gdb_bfd_ref_ptr. (macho_symfile_read_all_oso): Update. (macho_check_dsym): Return gdb_bfd_ref_ptr. (macho_symfile_read): Update. * jit.c (bfd_open_from_target_memory): Return gdb_bfd_ref_ptr. (jit_bfd_try_read_symtab): Update. * gdb_bfd.h (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. (gdb_bfd_ref_policy): New struct. (gdb_bfd_ref_ptr): New typedef. * gdb_bfd.c (gdb_bfd_open, gdb_bfd_fopen, gdb_bfd_openr) (gdb_bfd_openw, gdb_bfd_openr_iovec) (gdb_bfd_openr_next_archived_file, gdb_bfd_fdopenr): Return gdb_bfd_ref_ptr. * gcore.h (create_gcore_bfd): Return gdb_bfd_ref_ptr. * gcore.c (create_gcore_bfd): Return gdb_bfd_ref_ptr. (gcore_command): Update. * exec.c (exec_file_attach): Update. * elfread.c (elf_symfile_read): Update. * dwarf2read.c (dwarf2_get_dwz_file): Update. (try_open_dwop_file, open_dwo_file): Return gdb_bfd_ref_ptr. (open_and_init_dwo_file): Update. (open_dwp_file): Return gdb_bfd_ref_ptr. (open_and_init_dwp_file): Update. * corelow.c (core_open): Update. * compile/compile-object-load.c (compile_object_load): Update. * common/gdb_ref_ptr.h (ref_ptr::operator->): New operator. * coffread.c (coff_symfile_read): Update. * cli/cli-dump.c (bfd_openr_or_error, bfd_openw_or_error): Return gdb_bfd_ref_ptr. Rename. (dump_bfd_file, restore_command): Update. * build-id.h (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. * build-id.c (build_id_to_debug_bfd): Return gdb_bfd_ref_ptr. (find_separate_debug_file_by_buildid): Update.
2016-11-22 02:12:23 +08:00
gdb_bfd_ref_ptr gdb_bfd_openr_next_archived_file (bfd *archive, bfd *previous);
* cli/cli-dump.c (bfd_openr_with_cleanup): Use gdb_bfd_openr. (bfd_openw_with_cleanup): Use gdb_bfd_openw. * corelow.c (core_open): Use gdb_bfd_fopen. * dsrec.c (load_srec): Use gdb_bfd_openr. * exec.c (exec_file_attach): Use gdb_bfd_fopen. * gcore.c (gcore_memory_sections): Use gdb_bfd_openw. * gdb_bfd.c (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): New functions. * gdb_bfd.h (gdb_bfd_fopen, gdb_bfd_openr, gdb_bfd_openw) (gdb_bfd_openr_iovec, gdb_bfd_openr_next_archived_file) (gdb_bfd_fdopenr): Declare. * jit.c (bfd_open_from_target_memory): Use gdb_bfd_openr_iovec. * m32-rom.c (m32r_load, m32r_upload_command): Use gdb_bfd_openr. * machoread.c (macho_symfile_read_all_oso): Use gdb_bfd_openr, gdb_bfd_openr_next_archived_file. (macho_check_dsym): Use gdb_bfd_openr. (macho_add_oso_symfile): Don't call gdb_bfd_stash_filename. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_fdopenr. * remote-m32r-sdi.c (m32r_load): Use gdb_bfd_openr. * remote-mips.c (mips_load_srec, pmon_load_fast): Use gdb_bfd_openr. * remote.c (remote_bfd_open): Use gdb_bfd_openr_iovec. * rs6000-nat.c (add_vmap): Use gdb_bfd_openr, gdb_bfd_fdopenr, gdb_bfd_openr_next_archived_file. * solib-darwin.c (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_openr. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_openr. * solib-spu.c (spu_bfd_fopen): Use gdb_bfd_openr_iovec. * solib.c (solib_bfd_fopen): Use gdb_bfd_fopen. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_openr_iovec. * symfile.c (bfd_open_maybe_remote): Use gdb_bfd_openr. (symfile_bfd_open): Use gdb_bfd_fopen. (generic_load): Use gdb_bfd_openr. * windows-nat.c (windows_make_so): Use gdb_bfd_openr.
2012-07-23 22:57:58 +08:00
/* Return the index of the BFD section SECTION. Ordinarily this is
just the section's index, but for some special sections, like
bfd_com_section_ptr, it will be a synthesized value. */
int gdb_bfd_section_index (bfd *abfd, asection *section);
/* Like bfd_count_sections, but include any possible global sections,
like bfd_com_section_ptr. */
int gdb_bfd_count_sections (bfd *abfd);
/* Return true if any section requires relocations, false
otherwise. */
int gdb_bfd_requires_relocations (bfd *abfd);
/* Alternative to bfd_get_full_section_contents that returns the section
contents in *CONTENTS, instead of an allocated buffer.
Return true on success, false otherwise. */
bool gdb_bfd_get_full_section_contents (bfd *abfd, asection *section,
gdb::byte_vector *contents);
/* Create and initialize a BFD handle from a target in-memory range. The
BFD starts at ADDR and is SIZE bytes long. TARGET is the BFD target
name as used in bfd_find_target. */
gdb_bfd_ref_ptr gdb_bfd_open_from_target_memory (CORE_ADDR addr, ULONGEST size,
const char *target);
/* Range adapter for a BFD's sections.
To be used as:
for (asection *sect : gdb_bfd_all_sections (bfd))
... use SECT ...
*/
gdb: introduce iterator_range, remove next_adapter I was always a bit confused by next_adapter, because it kind of mixes the element type and the iterator type. In reality, it is not much more than a class that wraps two iterators (begin and end). However, it assumes that: - you can construct the begin iterator by passing a pointer to the first element of the iterable - you can default-construct iterator to make the end iterator I think that by generalizing it a little bit, we can re-use it at more places. Rename it to "iterator_range". I think it describes a bit better: it's a range made by wrapping a begin and end iterator. Move it to its own file, since it's not related to next_iterator anymore. iterator_range has two constructors. The variadic one, where arguments are forwarded to construct the underlying begin iterator. The end iterator is constructed through default construction. This is a generalization of what we have today. There is another constructor which receives already constructed begin and end iterators, useful if the end iterator can't be obtained by default-construction. Or, if you wanted to make a range that does not end at the end of the container, you could pass any iterator as the "end". This generalization allows removing some "range" classes, like all_inferiors_range. These classes existed only to pass some arguments when constructing the begin iterator. With iterator_range, those same arguments are passed to the iterator_range constructed and then forwarded to the constructed begin iterator. There is a small functional difference in how iterator_range works compared to next_adapter. next_adapter stored the pointer it received as argument and constructeur an iterator in the `begin` method. iterator_range constructs the begin iterator and stores it as a member. Its `begin` method returns a copy of that iterator. With just iterator_range, uses of next_adapter<foo> would be replaced with: using foo_iterator = next_iterator<foo>; using foo_range = iterator_range<foo_iterator>; However, I added a `next_range` wrapper as a direct replacement for next_adapter<foo>. IMO, next_range is a slightly better name than next_adapter. The rest of the changes are applications of this new class. gdbsupport/ChangeLog: * next-iterator.h (class next_adapter): Remove. * iterator-range.h: New. gdb/ChangeLog: * breakpoint.h (bp_locations_range): Remove. (bp_location_range): New. (struct breakpoint) <locations>: Adjust type. (breakpoint_range): Use iterator_range. (tracepoint_range): Use iterator_range. * breakpoint.c (breakpoint::locations): Adjust return type. * gdb_bfd.h (gdb_bfd_section_range): Use iterator_range. * gdbthread.h (all_threads_safe): Pass argument to all_threads_safe_range. * inferior-iter.h (all_inferiors_range): Use iterator_range. (all_inferiors_safe_range): Use iterator_range. (all_non_exited_inferiors_range): Use iterator_range. * inferior.h (all_inferiors, all_non_exited_inferiors): Pass inferior_list as argument. * objfiles.h (struct objfile) <compunits_range>: Remove. <compunits>: Return compunit_symtab_range. * progspace.h (unwrapping_objfile_iterator) <unwrapping_objfile_iterator>: Take parameter by value. (unwrapping_objfile_range): Use iterator_range. (struct program_space) <objfiles_range>: Define with "using". <objfiles>: Adjust. <objfiles_safe_range>: Define with "using". <objfiles_safe>: Adjust. <solibs>: Return so_list_range, define here. * progspace.c (program_space::solibs): Remove. * psymtab.h (class psymtab_storage) <partial_symtab_iterator>: New. <partial_symtab_range>: Use iterator_range. * solist.h (so_list_range): New. * symtab.h (compunit_symtab_range): New. (symtab_range): New. (compunit_filetabs): Change to a function. * thread-iter.h (inf_threads_range, inf_non_exited_threads_range, safe_inf_threads_range, all_threads_safe_range): Use iterator_range. * top.h (ui_range): New. (all_uis): Use ui_range. Change-Id: Ib7a9d2a3547f45f01aa1c6b24536ba159db9b854
2021-06-19 00:00:38 +08:00
using gdb_bfd_section_range = next_range<asection>;
static inline gdb_bfd_section_range
gdb_bfd_sections (bfd *abfd)
{
return gdb_bfd_section_range (abfd->sections);
}
static inline gdb_bfd_section_range
gdb_bfd_sections (const gdb_bfd_ref_ptr &abfd)
{
return gdb_bfd_section_range (abfd->sections);
};
/* A wrapper for bfd_errmsg to produce a more helpful error message
in the case of bfd_error_file_ambiguously recognized.
MATCHING, if non-NULL, is the corresponding argument to
bfd_check_format_matches, and will be freed. */
extern std::string gdb_bfd_errmsg (bfd_error_type error_tag, char **matching);
/* A wrapper for bfd_init that also handles setting up for
multi-threading. */
extern void gdb_bfd_init ();
* dwarf2read.c (try_open_dwo_file): Use gdb_bfd_ref and gdb_bfd_unref. (free_dwo_file): Use gdb_bfd_unref. * cli/cli-dump.c: Include gdb_bfd.h. (bfd_openw_with_cleanup): Use gdb_bfd_ref. (bfd_openr_with_cleanup): Likewise. * windows-nat.c (windows_make_so): Use gdb_bfd_ref, gdb_bfd_unref. * utils.c: Include gdb_bfd.h. (do_bfd_close_cleanup): Use gdb_bfd_unref. * symfile.c: Include gdb_bfd.h. (separate_debug_file_exists): Use gdb_bfd_unref. (bfd_open_maybe_remote): Use gdb_bfd_ref. (symfile_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. (generic_load): Use gdb_bfd_ref. (reread_symbols): Use gdb_bfd_unref. * symfile-mem.c: Include gdb_bfd.h. (symbol_file_add_from_memory): Use make_cleanup_bfd_close. * spu-linux-nat.c (spu_bfd_open): Use gdb_bfd_ref, gdb_bfd_unref. * solib.c: Include gdb_bfd.h. (solib_bfd_fopen): Use gdb_bfd_ref. (solib_bfd_open): Use gdb_bfd_unref. (free_so_symbols): Use gdb_bfd_unref. (reload_shared_libraries_1): Use gdb_bfd_unref. * solib-spu.c: Include gdb_bfd.h. (spu_bfd_fopen): Use gdb_bfd_ref, gdb_bfd_unref. * solib-pa64.c (pa64_solib_create_inferior_hook): Use gdb_bfd_ref, gdb_bfd_unref. * solib-frv.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-dsbt.c: Include gdb_bfd.h. (enable_break2): Use gdb_bfd_unref. * solib-darwin.c: Include gdb_bfd.h. (darwin_solib_get_all_image_info_addr_at_init): Use gdb_bfd_ref, gdb_bfd_unref. (darwin_bfd_open): Use gdb_bfd_unref. * rs6000-nat.c (add_vmap): Use gdb_bfd_ref, gdb_bfd_unref. * remote-mips.c: Include gdb_bfd.h. (mips_load_srec): Use gdb_bfd_ref. (pmon_load_fast): Use gdb_bfd_ref. * remote-m32r-sdi.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. * record.c: Include gdb_bfd.h. (record_save_cleanups): Use gdb_bfd_unref. (cmd_record_save): Use gdb_bfd_unref. * procfs.c (insert_dbx_link_bpt_in_file): Use gdb_bfd_ref, gdb_bfd_unref. * objfiles.h (gdb_bfd_close_or_warn): Remove. (gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.h. * objfiles.c: Include gdb_bfd.h. (free_objfile): Use gdb_bfd_unref. (gdb_bfd_close_or_warn, gdb_bfd_ref, gdb_bfd_unref): Move to gdb_bfd.c. * machoread.c (macho_add_oso_symfile): Use gdb_bfd_unref. (macho_symfile_read_all_oso): Use gdb_bfd_ref, gdb_bfd_unref. (macho_check_dsym): Likewise. * m32r-rom.c: Include gdb_bfd.h. (m32r_load): Use gdb_bfd_ref. (m32r_upload_command): Use gdb_bfd_ref. * jit.c: Include gdb_bfd.h. (jit_bfd_try_read_symtab): Use gdb_bfd_ref, gdb_bfd_unref. * gdb_bfd.h: New file. * gdb_bfd.c: New file. * gcore.c: Include gdb_bfd.h. (create_gcore_bfd): Use gdb_bfd_ref. (do_bfd_delete_cleanup): Use gdb_bfd_unref. (gcore_command): Use gdb_bfd_unref. * exec.c: Include gdb_bfd.h. (exec_close): Use gdb_bfd_unref. (exec_close_1): Use gdb_bfd_unref. (exec_file_attach): Use gdb_bfd_ref. * elfread.c: Include gdb_bfd.h. (build_id_verify): Use gdb_bfd_unref. * dsrec.c: Include gdb_bfd.h. (load_srec): Use gdb_bfd_ref. * corelow.c: Include gdb_bfd.h. (core_close): Use gdb_bfd_unref. (core_open): Use gdb_bfd_ref. * bfd-target.c: Include gdb_bfd.h. (target_bfd_xclose): Use gdb_bfd_unref. (target_bfd_reopen): Use gdb_bfd_ref. * Makefile.in (SFILES): Add gdb_bfd.c. (HFILES_NO_SRCDIR): Add gdb_bfd.h. (COMMON_OBS): Add gdb_bfd.o.
2012-07-19 03:33:34 +08:00
#endif /* GDB_BFD_H */