+2021-02-12 Nick Clifton <nickc@redhat.com>
+
+ * configure.ac (follow-debug-links): Add option to enable or
+ disable the following of debug links by default. Set the
+ default for the option to be 'follow'.
+ * dwarf.c (do_follow_links): Initialise with DEFAULT_FOR_FOLLOW_LINKS.
+ (dwarf_select_sections_by_names): Add no-follow-links option.
+ (dwarf_select_sections_by_letter): Add 'N' option.
+ * objdump.c (usage): Add conditional text describing the
+ follow links option.
+ (slurp_symtab): Ensure that there is a NULL entry at the end
+ of the symbol table.
+ (slurp_dynamic_symtab): Likewise.
+ (dump_bfd): When extending the symbol table, ensure that there
+ is still a NULL entry at the end.
+ * readelf.c (usage): Add conditional text describing the
+ follow links option.
+ * doc/binutils.texi: Update documentation for objcopy and
+ readelf.
+ * doc/debug.options.texi: Update documentation of the
+ follow-links option.
+ * config.in: Regenerate.
+ * configure: Regenerate.
+ * testsuite/binutils-all/compress.exp: Add the -WN option to
+ objdump command lines that are not expecting to follow links.
+ * testsuite/binutils-all/readelf.exp: Add the
+ --debug-dump=no-follow-links option to tests that are not
+ expecting to follow debug links.
+ * NEWS: Mention the new behaviour.
+
2021-02-12 Alan Modra <amodra@gmail.com>
* testsuite/binutils-all/objcopy.exp: Report "unsupported" when
-*- text -*-
+* Readelf and objdump will now follow links to separate debug info files by
+ default. This behaviour can be stopped via the use of the new -wN or
+ --debug-dump=no-follow-links options for readelf and the -WN or
+ --dwarf=no-follow-links options for objdump. Also the old behaviour can be
+ restored by the use of the --enable-follow-debug-links=no configure time
+ option.
+
Changes in 2.36:
* Update elfedit and readelf with LAM_U48 and LAM_U57 support.
/* Should ar and ranlib use -D behavior by default? */
#undef DEFAULT_AR_DETERMINISTIC
+/* Have readelf and objdump follow debug links by default */
+#undef DEFAULT_FOR_FOLLOW_LINKS
+
/* Have nm use F and f for global and local ifunc symbols */
#undef DEFAULT_F_FOR_IFUNC_SYMBOLS
enable_deterministic_archives
enable_default_strings_all
enable_f_for_ifunc_symbols
+enable_follow_debug_links
with_debuginfod
enable_libctf
enable_werror
--enable-f-for-ifunc-symbols
Have nm use F and f for global and local ifunc
symbols
+ --enable-follow-debug-links
+ Have readelf and objdump follow debug links by
+ default
--enable-libctf Handle .ctf type-info sections [default=yes]
--enable-werror treat compile warnings as errors
--enable-build-warnings enable build-time compiler warnings
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11580 "configure"
+#line 11584 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
-#line 11686 "configure"
+#line 11690 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
+# Check whether --enable-follow-debug-links was given.
+if test "${enable_follow_debug_links+set}" = set; then :
+ enableval=$enable_follow_debug_links;
+if test "${enableval}" = no; then
+ default_for_follow_links=0
+else
+ default_for_follow_links=1
+fi
+else
+ default_for_follow_links=1
+fi
+
+
+
+cat >>confdefs.h <<_ACEOF
+#define DEFAULT_FOR_FOLLOW_LINKS $default_for_follow_links
+_ACEOF
+
+
+
+
AC_DEFINE_UNQUOTED(DEFAULT_F_FOR_IFUNC_SYMBOLS, $default_f_for_ifunc,
[Have nm use F and f for global and local ifunc symbols])
+
+AC_ARG_ENABLE(follow-debug-links,
+[AS_HELP_STRING([--enable-follow-debug-links],
+ [Have readelf and objdump follow debug links by default])], [
+if test "${enableval}" = no; then
+ default_for_follow_links=0
+else
+ default_for_follow_links=1
+fi], [default_for_follow_links=1])
+
+AC_DEFINE_UNQUOTED(DEFAULT_FOR_FOLLOW_LINKS, $default_for_follow_links,
+ [Have readelf and objdump follow debug links by default])
+
+
AC_DEBUGINFOD
GCC_ENABLE([libctf], [yes], [], [Handle .ctf type-info sections])
[@option{-r}|@option{--reloc}]
[@option{-R}|@option{--dynamic-reloc}]
[@option{-s}|@option{--full-contents}]
- [@option{-W[lLiaprmfFsoORtUuTgAckK]}|
- @option{--dwarf}[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow-links]]
+ [@option{-W[lLiaprmfFsoORtUuTgAck]}|
+ @option{--dwarf}[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links]]
+ [@option{-WK}|@option{--dwarf=follow-links}]
+ [@option{-WN}|@option{--dwarf=no-follow-links}]
[@option{--ctf=}@var{section}]
[@option{-G}|@option{--stabs}]
[@option{-t}|@option{--syms}]
next symbol is encountered. If there are no matches for @var{symbol}
then nothing will be displayed.
-Note if the @option{--dwarf=follow-links} option has also been enabled
+Note if the @option{--dwarf=follow-links} option is enabled
then any symbol tables in linked debug info files will be read in and
used when disassembling.
of forcing the disassembler to decode pieces of data found in code
sections as if they were instructions.
-Note if the @option{--dwarf=follow-links} option has also been enabled
+Note if the @option{--dwarf=follow-links} option is enabled
then any symbol tables in linked debug info files will be read in and
used when disassembling.
[@option{-R} <number or name>|@option{--relocated-dump=}<number or name>]
[@option{-z}|@option{--decompress}]
[@option{-c}|@option{--archive-index}]
- [@option{-w[lLiaprmfFsoORtUuTgAckK]}|
- @option{--debug-dump}[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow-links]]
+ [@option{-w[lLiaprmfFsoORtUuTgAck]}|
+ @option{--debug-dump}[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links]]
+ [@option{-wK}|@option{--debug-dump=follow-links}]
+ [@option{-wN}|@option{--debug-dump=no-follow-links}]
[@option{--dwarf-depth=@var{n}}]
[@option{--dwarf-start=@var{n}}]
[@option{--ctf=}@var{section}]
references the separate debug info file, then the referenced contents
will also be displayed.
+Note - in some distributions this option is enabled by default. It
+can be disabled via the @option{N} debug option. The default can be
+chosen when configuring the binutils via the
+@option{--enable-follow-debug-links=yes} or
+@option{--enable-follow-debug-links=no} options. If these are not
+used then the default is to enable the following of debug links.
+
+@item N
+@itemx =no-follow-links
+Disables the following of links to separate debug info files.
+
@item l
@itemx =rawline
Displays the contents of the @samp{.debug_line} section in a raw
int do_debug_cu_index;
int do_wide;
int do_debug_links;
-int do_follow_links;
+int do_follow_links = DEFAULT_FOR_FOLLOW_LINKS;
bfd_boolean do_checks;
int dwarf_cutoff_level = -1;
{ "links", & do_debug_links, 1 },
{ "loc", & do_debug_loc, 1 },
{ "macro", & do_debug_macinfo, 1 },
+ { "no-follow-links", & do_follow_links, 0 },
{ "pubnames", & do_debug_pubnames, 1 },
{ "pubtypes", & do_debug_pubtypes, 1 },
/* This entry is for compatibility
if (strncmp (p, entry->option, len) == 0
&& (p[len] == ',' || p[len] == '\0'))
{
- * entry->variable |= entry->val;
+ * entry->variable = entry->val;
/* The --debug-dump=frames-interp option also
enables the --debug-dump=frames option. */
case 'g': do_gdb_index = 1; break;
case 'i': do_debug_info = 1; break;
case 'K': do_follow_links = 1; break;
+ case 'N': do_follow_links = 0; break;
case 'k': do_debug_links = 1; break;
case 'l': do_debug_lines |= FLAG_DEBUG_LINES_RAW; break;
case 'L': do_debug_lines |= FLAG_DEBUG_LINES_DECODED; break;
-g, --debugging Display debug information in object file\n\
-e, --debugging-tags Display debug information using ctags style\n\
-G, --stabs Display (in raw form) any STABS info in the file\n\
- -W[lLiaprmfFsoORtUuTgAckK] or\n\
+ -W[lLiaprmfFsoORtUuTgAck] or\n\
--dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,\n\
=gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
- =addr,=cu_index,=links,=follow-links]\n\
+ =addr,=cu_index,=links]\n\
Display DWARF info in the file\n\
"));
+#if DEFAULT_FOR_FOLLOW_LINKS
+ fprintf (stream, _("\
+ -WK,--dwarf=follow-links Follow links to separate debug info files (default)\n\
+ -WN,--dwarf=no-follow-links Do not follow links to separate debug info files\n\
+"));
+#else
+ fprintf (stream, _("\
+ -WK,--dwarf=follow-links Follow links to separate debug info files\n\
+ -WN,--dwarf=no-follow-links Do not follow links to separate debug info files (default)\n\
+"));
+#endif
#ifdef ENABLE_LIBCTF
fprintf (stream, _("\
--ctf=SECTION Display CTF info from SECTION\n\
non_fatal (_("failed to read symbol table from: %s"), bfd_get_filename (abfd));
bfd_fatal (_("error message was"));
}
- if (storage)
- {
- off_t filesize = bfd_get_file_size (abfd);
-
- /* qv PR 24707. */
- if (filesize > 0
- && filesize < storage
- /* The MMO file format supports its own special compression
- technique, so its sections can be larger than the file size. */
- && bfd_get_flavour (abfd) != bfd_target_mmo_flavour)
- {
- bfd_nonfatal_message (bfd_get_filename (abfd), abfd, NULL,
- _("error: symbol table size (%#lx) is larger than filesize (%#lx)"),
- storage, (long) filesize);
- exit_status = 1;
- symcount = 0;
- return NULL;
- }
+ /* Add an extra entry (at the end) with a NULL pointer. */
+ storage += sizeof (asymbol *);
- sy = (asymbol **) xmalloc (storage);
+ off_t filesize = bfd_get_file_size (abfd);
+
+ /* qv PR 24707. */
+ if (filesize > 0
+ && filesize < storage
+ /* The MMO file format supports its own special compression
+ technique, so its sections can be larger than the file size. */
+ && bfd_get_flavour (abfd) != bfd_target_mmo_flavour)
+ {
+ bfd_nonfatal_message (bfd_get_filename (abfd), abfd, NULL,
+ _("error: symbol table size (%#lx) is larger than filesize (%#lx)"),
+ storage, (long) filesize);
+ exit_status = 1;
+ symcount = 0;
+ return NULL;
}
+ sy = (asymbol **) xmalloc (storage);
symcount = bfd_canonicalize_symtab (abfd, sy);
if (symcount < 0)
bfd_fatal (bfd_get_filename (abfd));
+ /* assert (symcount < (storage / sizeof (asymbol *))) */
+ sy[symcount] = NULL;
return sy;
}
long storage;
storage = bfd_get_dynamic_symtab_upper_bound (abfd);
+ /* Add an extra entry (at the end) with a NULL pointer. */
if (storage < 0)
{
if (!(bfd_get_file_flags (abfd) & DYNAMIC))
bfd_fatal (bfd_get_filename (abfd));
}
- if (storage)
- sy = (asymbol **) xmalloc (storage);
+
+ storage += sizeof (asymbol *);
+ sy = (asymbol **) xmalloc (storage);
dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
if (dynsymcount < 0)
bfd_fatal (bfd_get_filename (abfd));
+ /* assert (symcount < (storage / sizeof (asymbol *))) */
+ sy[dynsymcount] = NULL;
return sy;
}
}
else
{
- syms = xrealloc (syms, (symcount + old_symcount) * sizeof (asymbol *));
+ syms = xrealloc (syms, (symcount + old_symcount + 1) * sizeof (asymbol *));
memcpy (syms + old_symcount,
extra_syms,
symcount * sizeof (asymbol *));
+ /* Preserve the NULL entry at the end of the symbol table. */
+ syms[symcount + old_symcount] = NULL;
}
}
-R --relocated-dump=<number|name>\n\
Dump the contents of section <number|name> as relocated bytes\n\
-z --decompress Decompress section before dumping it\n\
- -w[lLiaprmfFsoORtUuTgAckK] or\n\
+ -w[lLiaprmfFsoORtUuTgAck] or\n\
--debug-dump[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,\n\
=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,\n\
=gdb_index,=trace_info,=trace_abbrev,=trace_aranges,\n\
- =addr,=cu_index,=links,=follow-links]\n\
+ =addr,=cu_index,=links]\n\
Display the contents of DWARF debug sections\n"));
+#if DEFAULT_FOR_FOLLOW_LINKS
+ fprintf (stream, _("\
+ -wK,--debug-dump=follow-links Follow links to separate debug info files (default)\n\
+ -wN,--debug-dump=no-follow-links Do not follow links to separate debug info files\n\
+"));
+#else
+ fprintf (stream, _("\
+ -wK,--debug-dump=follow-links Follow links to separate debug info files\n\
+ -wN,--debug-dump=no-follow-links Do not follow links to separate debug info files (default)\n\
+"));
+#endif
fprintf (stream, _("\
--dwarf-depth=N Do not display DIEs at depth N or greater\n\
--dwarf-start=N Display DIEs starting with N, at the same depth\n\
fail "$test (objcopy link decompress)"
return
}
- set got [remote_exec host "$OBJDUMP -S tmpdir/testprog" "" "/dev/null" "tmpdir/testprog.decompress.dump"]
+ set got [remote_exec host "$OBJDUMP -S -WN tmpdir/testprog" "" "/dev/null" "tmpdir/testprog.decompress.dump"]
if { [lindex $got 0] != 0 || ![string match "" [lindex $got 1]] } then {
fail "$test (objcopy dump decompress)"
return
fail "$test (objcopy link compress)"
return
}
- set got [remote_exec host "$OBJDUMP -S tmpdir/testprog" "" "/dev/null" "tmpdir/testprog.compress.dump"]
+ set got [remote_exec host "$OBJDUMP -S -WN tmpdir/testprog" "" "/dev/null" "tmpdir/testprog.compress.dump"]
if { [lindex $got 0] != 0 || ![string match "" [lindex $got 1]] } then {
fail "$test (objcopy dump compress)"
return
set testfile tmpdir/debuglink.${obj}
}
- set got [remote_exec host "$OBJDUMP $OBJDUMPFLAGS -Wk $testfile" "" "/dev/null" "objdump.out"]
+ set got [remote_exec host "$OBJDUMP $OBJDUMPFLAGS -Wk -WN $testfile" "" "/dev/null" "objdump.out"]
if { [lindex $got 0] != 0 || ![string match "" [lindex $got 1]] } then {
fail "objdump -Wk (reason: unexpected output)"
}
if { [regexp_diff objdump.out $srcdir/$subdir/objdump.Wk] } then {
- fail "objdump -Wk"
+ fail "objdump -Wk (reason: output does not match expectations)"
} else {
pass "objdump -Wk"
}
set tempfile [remote_download host tmpdir/debuglink.o]
}
- readelf_test {--debug-dump=links} $tempfile readelf.k {}
+ readelf_test {--debug-dump=links -wN} $tempfile readelf.k {}
# Check that debug link sections can be followed.
if {![binutils_assemble $srcdir/$subdir/linkdebug.s tmpdir/linkdebug.debug]} then {
set tempfile [remote_download host tmpdir/dwo.o]
}
- readelf_test {--debug-dump=links} $tempfile readelf.k2 {}
+ readelf_test {--debug-dump=links --debug-dump=no-follow-links} $tempfile readelf.k2 {}
}
if {![binutils_assemble $srcdir/$subdir/zero-sec.s tmpdir/zero-sec.o]} then {
if {[catch "system \"bzip2 -dc $test > $tempfile\""] != 0} {
untested "bzip2 -dc ($testname)"
} else {
- readelf_test {--debug-dump=macro} $tempfile pr26112.r {}
+ readelf_test {--debug-dump=macro -wN} $tempfile pr26112.r {}
}
}
+2021-02-12 Nick Clifton <nickc@redhat.com>
+
+ * testsuite/gas/mach-o/sections-1.d: Stop automatic debug link
+ following.
+ * testsuite/gas/xgate/insns-dwarf2.d: Likewise.
+
2021-02-12 Alan Modra <amodra@gmail.com>
* testsuite/gas/all/pr27381.err: Don't match source file name.
-#objdump: -P section
+#objdump: -P section -WN
.*: +file format mach-o.*
#...
Section: __text __TEXT \(bfdname: .text\)
-#objdump: -S
+#objdump: -S -WN
#as: -gdwarf2
#name: Dwarf2 test on insns.s
#source: insns.s
+2021-02-12 Nick Clifton <nickc@redhat.com>
+
+ * testsuite/ld-elf/sec64k.exp: Stop readelf from automatically
+ following debug links.
+
2021-02-11 Alan Modra <amodra@gmail.com>
* NEWS: Mention arm-symbianelf removal.
puts $ofd "#as: -ez80-adl"
}
puts $ofd "#ld: -r"
- puts $ofd "#readelf: -W -Ss"
+ puts $ofd "#readelf: -W -wN -Ss"
puts $ofd "There are 680.. section headers.*:"
puts $ofd "#..."
puts $ofd " \\\[ 0\\\] .* 680\[0-9\]\[0-9\]\[ \]+0\[ \]+0"
if { [istarget "z80-*-*"] } then {
puts $ofd "#as: -ez80-adl"
}
- puts $ofd "#readelf: -W -Ss"
+ puts $ofd "#readelf: -W -wN -Ss"
puts $ofd "There are 660.. section headers.*:"
puts $ofd "#..."
puts $ofd " \\\[ 0\\\] .* 660..\[ \]+0\[ \]+0"
projects / binutils-gdb.git / commitdiff