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https://sourceware.org/git/binutils-gdb.git
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268a13a5a3
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.
206 lines
5.6 KiB
C
206 lines
5.6 KiB
C
/* build-id-related functions.
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "bfd.h"
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#include "gdb_bfd.h"
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#include "build-id.h"
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#include "gdbsupport/gdb_vecs.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "filenames.h"
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#include "gdbcore.h"
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/* See build-id.h. */
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const struct bfd_build_id *
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build_id_bfd_get (bfd *abfd)
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{
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if (!bfd_check_format (abfd, bfd_object))
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return NULL;
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if (abfd->build_id != NULL)
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return abfd->build_id;
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/* No build-id */
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return NULL;
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}
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/* See build-id.h. */
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int
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build_id_verify (bfd *abfd, size_t check_len, const bfd_byte *check)
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{
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const struct bfd_build_id *found;
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int retval = 0;
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found = build_id_bfd_get (abfd);
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if (found == NULL)
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warning (_("File \"%s\" has no build-id, file skipped"),
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bfd_get_filename (abfd));
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else if (found->size != check_len
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|| memcmp (found->data, check, found->size) != 0)
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warning (_("File \"%s\" has a different build-id, file skipped"),
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bfd_get_filename (abfd));
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else
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retval = 1;
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return retval;
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}
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/* Helper for build_id_to_debug_bfd. LINK is a path to a potential
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build-id-based separate debug file, potentially a symlink to the real file.
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If the file exists and matches BUILD_ID, return a BFD reference to it. */
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static gdb_bfd_ref_ptr
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build_id_to_debug_bfd_1 (const std::string &link, size_t build_id_len,
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const bfd_byte *build_id)
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{
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if (separate_debug_file_debug)
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{
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printf_unfiltered (_(" Trying %s..."), link.c_str ());
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gdb_flush (gdb_stdout);
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}
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/* lrealpath() is expensive even for the usually non-existent files. */
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gdb::unique_xmalloc_ptr<char> filename;
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if (access (link.c_str (), F_OK) == 0)
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filename.reset (lrealpath (link.c_str ()));
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if (filename == NULL)
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{
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if (separate_debug_file_debug)
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printf_unfiltered (_(" no, unable to compute real path\n"));
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return {};
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}
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/* We expect to be silent on the non-existing files. */
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gdb_bfd_ref_ptr debug_bfd = gdb_bfd_open (filename.get (), gnutarget, -1);
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if (debug_bfd == NULL)
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{
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if (separate_debug_file_debug)
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printf_unfiltered (_(" no, unable to open.\n"));
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return {};
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}
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if (!build_id_verify (debug_bfd.get(), build_id_len, build_id))
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{
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if (separate_debug_file_debug)
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printf_unfiltered (_(" no, build-id does not match.\n"));
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return {};
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}
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if (separate_debug_file_debug)
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printf_unfiltered (_(" yes!\n"));
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return debug_bfd;
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}
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/* See build-id.h. */
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gdb_bfd_ref_ptr
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build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id)
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{
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/* Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
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cause "/.build-id/..." lookups. */
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std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec
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= dirnames_to_char_ptr_vec (debug_file_directory);
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for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec)
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{
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const gdb_byte *data = build_id;
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size_t size = build_id_len;
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/* Compute where the file named after the build-id would be.
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If debugdir is "/usr/lib/debug" and the build-id is abcdef, this will
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give "/usr/lib/debug/.build-id/ab/cdef.debug". */
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std::string link = debugdir.get ();
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link += "/.build-id/";
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if (size > 0)
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{
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size--;
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string_appendf (link, "%02x/", (unsigned) *data++);
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}
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while (size-- > 0)
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string_appendf (link, "%02x", (unsigned) *data++);
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link += ".debug";
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gdb_bfd_ref_ptr debug_bfd
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= build_id_to_debug_bfd_1 (link, build_id_len, build_id);
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if (debug_bfd != NULL)
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return debug_bfd;
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/* Try to look under the sysroot as well. If the sysroot is
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"/the/sysroot", it will give
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"/the/sysroot/usr/lib/debug/.build-id/ab/cdef.debug".
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Don't do it if the sysroot is the target system ("target:"). It
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could work in theory, but the lrealpath in build_id_to_debug_bfd_1
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only works with local paths. */
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if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) != 0)
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{
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link = gdb_sysroot + link;
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debug_bfd = build_id_to_debug_bfd_1 (link, build_id_len, build_id);
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if (debug_bfd != NULL)
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return debug_bfd;
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}
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}
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return {};
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}
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/* See build-id.h. */
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std::string
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find_separate_debug_file_by_buildid (struct objfile *objfile)
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{
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const struct bfd_build_id *build_id;
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build_id = build_id_bfd_get (objfile->obfd);
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if (build_id != NULL)
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{
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if (separate_debug_file_debug)
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printf_unfiltered (_("\nLooking for separate debug info (build-id) for "
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"%s\n"), objfile_name (objfile));
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gdb_bfd_ref_ptr abfd (build_id_to_debug_bfd (build_id->size,
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build_id->data));
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/* Prevent looping on a stripped .debug file. */
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if (abfd != NULL
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&& filename_cmp (bfd_get_filename (abfd.get ()),
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objfile_name (objfile)) == 0)
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warning (_("\"%s\": separate debug info file has no debug info"),
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bfd_get_filename (abfd.get ()));
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else if (abfd != NULL)
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return std::string (bfd_get_filename (abfd.get ()));
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}
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return std::string ();
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}
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