Revert "Add support for the readnever concept"
This reverts commit e2e321740c.
It was mistakenly pushed.
This commit is contained in:
Sergio Durigan Junior
parent
7ef67ba533
commit
7f0f8ac8b1
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@ -14,37 +14,6 @@
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* ada-exp.y (block_lookup): Make sure "syms" gets xfree'ed.
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(write_var_or_type, write_name_assoc): Likewise.
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2017-12-01 Andrew Cagney <cagney@redhat.com>
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Joel Brobecker <brobecker@adacore.com>
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Sergio Durigan Junior <sergiodj@redhat.com>
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* NEWS (Changes since GDB 8.0: Mention new '--readnever'
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feature.
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* coffread.c (coff_symfile_read): Do not map over sections with
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'coff_locate_sections' if readnever is on.
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* dwarf2read.c (dwarf2_has_info): Return 0 if
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readnever is on.
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* elfread.c (elf_symfile_read): Do not map over sections with
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'elf_locate_sections' if readnever is on.
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* main.c (validate_readnow_readnever): New function.
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(captured_main_1): Add support for --readnever.
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(print_gdb_help): Document --readnever.
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* objfile-flags.h (enum objfile_flag) <OBJF_READNEVER>: New
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flag.
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* symfile.c (readnever_symbol_files): New global.
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(symbol_file_add_with_addrs): Set 'OBJF_READNEVER' when
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'READNEVER_SYMBOL_FILES' is set.
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(validate_readnow_readnever): New function.
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(symbol_file_command): Handle '-readnever' option.
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Call 'validate_readnow_readnever'.
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(add_symbol_file_command): Handle '-readnever' option.
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Call 'validate_readnow_readnever'.
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(_initialize_symfile): Document new '-readnever' option for
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both 'symbol-file' and 'add-symbol-file' commands.
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* top.h (readnever_symbol_files): New extern global.
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* xcoffread.c (xcoff_initial_scan): Do not read debug
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information if readnever is on.
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2017-12-01 Tom Tromey <tom@tromey.com>
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* Makefile.in (all_deps_files): New variable.
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6
gdb/NEWS
6
gdb/NEWS
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@ -3,12 +3,6 @@
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*** Changes since GDB 8.0
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* New "--readnever" command line option instructs GDB to not read each
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symbol file's symbolic debug information. This makes startup faster
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but at the expense of not being able to perform symbolic debugging.
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This option is intended for use cases where symbolic debugging will
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not be used, e.g., when you only need to dump the debuggee's core.
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* GDB now uses the GNU MPFR library, if available, to emulate target
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floating-point arithmetic during expression evaluation when the target
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uses different floating-point formats than the host. At least version
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@ -699,8 +699,7 @@ coff_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
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}
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}
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if (!(objfile->flags & OBJF_READNEVER))
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bfd_map_over_sections (abfd, coff_locate_sections, (void *) info);
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bfd_map_over_sections (abfd, coff_locate_sections, (void *) info);
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if (info->stabsects)
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{
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@ -1,11 +1,3 @@
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2017-12-01 Andrew Cagney <cagney@redhat.com>
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Joel Brobecker <brobecker@adacore.com>
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Sergio Durigan Junior <sergiodj@redhat.com>
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* gdb.texinfo (File Options): Document --readnever.
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(Commands to Specify Files): Likewise, for 'symbol-file' and
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'add-symbol-file'.
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2017-11-29 Pedro Alves <palves@redhat.com>
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PR c++/19436
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@ -1037,16 +1037,6 @@ Read each symbol file's entire symbol table immediately, rather than
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the default, which is to read it incrementally as it is needed.
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This makes startup slower, but makes future operations faster.
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@item --readnever
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@anchor{--readnever}
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@cindex @code{--readnever}, command-line option
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Do not read each symbol file's symbolic debug information. This makes
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startup faster but at the expense of not being able to perform
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symbolic debugging. DWARF unwind information is also not read,
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meaning backtraces may become incomplete or inaccurate. One use of
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this is when a user simply wants to do the following sequence: attach,
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dump core, detach. Loading the debugging information in this case is
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an unnecessary cause of delay.
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@end table
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@node Mode Options
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@ -18586,15 +18576,6 @@ tables by using the @samp{-readnow} option with any of the commands that
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load symbol table information, if you want to be sure @value{GDBN} has the
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entire symbol table available.
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@cindex @code{-readnever}, option for symbol-file command
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@cindex never read symbols
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@cindex symbols, never read
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@item symbol-file @r{[} -readnever @r{]} @var{filename}
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@itemx file @r{[} -readnever @r{]} @var{filename}
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You can instruct @value{GDBN} to never read the symbolic information
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contained in @var{filename} by using the @samp{-readnever} option.
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@xref{--readnever}.
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@c FIXME: for now no mention of directories, since this seems to be in
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@c flux. 13mar1992 status is that in theory GDB would look either in
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@c current dir or in same dir as myprog; but issues like competing
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@ -18623,7 +18604,7 @@ the program is running. To do this, use the @code{kill} command
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@kindex add-symbol-file
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@cindex dynamic linking
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@item add-symbol-file @var{filename} @var{address}
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@itemx add-symbol-file @var{filename} @var{address} @r{[} -readnow @r{|} -readnever @r{]}
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@itemx add-symbol-file @var{filename} @var{address} @r{[} -readnow @r{]}
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@itemx add-symbol-file @var{filename} @var{address} -s @var{section} @var{address} @dots{}
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The @code{add-symbol-file} command reads additional symbol table
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information from the file @var{filename}. You would use this command
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@ -2319,9 +2319,6 @@ int
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dwarf2_has_info (struct objfile *objfile,
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const struct dwarf2_debug_sections *names)
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{
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if (objfile->flags & OBJF_READNEVER)
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return 0;
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dwarf2_per_objfile = ((struct dwarf2_per_objfile *)
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objfile_data (objfile, dwarf2_objfile_data_key));
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if (!dwarf2_per_objfile)
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@ -1171,8 +1171,7 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
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struct elfinfo ei;
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memset ((char *) &ei, 0, sizeof (ei));
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if (!(objfile->flags & OBJF_READNEVER))
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bfd_map_over_sections (abfd, elf_locate_sections, (void *) & ei);
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bfd_map_over_sections (abfd, elf_locate_sections, (void *) & ei);
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elf_read_minimal_symbols (objfile, symfile_flags, &ei);
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37
gdb/main.c
37
gdb/main.c
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@ -402,19 +402,6 @@ symbol_file_add_main_adapter (const char *arg, int from_tty)
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symbol_file_add_main (arg, add_flags);
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}
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/* Perform validation of the '--readnow' and '--readnever' flags. */
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static void
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validate_readnow_readnever ()
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{
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if (readnever_symbol_files && readnow_symbol_files)
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{
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error (_("%s: '--readnow' and '--readnever' cannot be "
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"specified simultaneously"),
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gdb_program_name);
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}
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}
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/* Type of this option. */
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enum cmdarg_kind
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{
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@ -592,17 +579,14 @@ captured_main_1 (struct captured_main_args *context)
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OPT_NOWINDOWS,
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OPT_WINDOWS,
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OPT_IX,
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OPT_IEX,
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OPT_READNOW,
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OPT_READNEVER
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OPT_IEX
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};
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static struct option long_options[] =
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{
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{"tui", no_argument, 0, OPT_TUI},
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{"dbx", no_argument, &dbx_commands, 1},
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{"readnow", no_argument, NULL, OPT_READNOW},
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{"readnever", no_argument, NULL, OPT_READNEVER},
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{"r", no_argument, NULL, OPT_READNOW},
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{"readnow", no_argument, &readnow_symbol_files, 1},
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{"r", no_argument, &readnow_symbol_files, 1},
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{"quiet", no_argument, &quiet, 1},
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{"q", no_argument, &quiet, 1},
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{"silent", no_argument, &quiet, 1},
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@ -825,20 +809,6 @@ captured_main_1 (struct captured_main_args *context)
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}
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break;
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case OPT_READNOW:
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{
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readnow_symbol_files = 1;
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validate_readnow_readnever ();
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}
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break;
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case OPT_READNEVER:
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{
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readnever_symbol_files = 1;
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validate_readnow_readnever ();
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}
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break;
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case '?':
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error (_("Use `%s --help' for a complete list of options."),
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gdb_program_name);
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@ -1213,7 +1183,6 @@ Selection of debuggee and its files:\n\n\
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--se=FILE Use FILE as symbol file and executable file.\n\
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--symbols=SYMFILE Read symbols from SYMFILE.\n\
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--readnow Fully read symbol files on first access.\n\
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--readnever Do not read symbol files.\n\
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--write Set writing into executable and core files.\n\n\
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"), stream);
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fputs_unfiltered (_("\
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@ -64,10 +64,6 @@ enum objfile_flag
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unrelated to filesystem names. It can be for example
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"<image in memory>". */
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OBJF_NOT_FILENAME = 1 << 6,
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/* User requested that we do not read this objfile's symbolic
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information. */
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OBJF_READNEVER = 1 << 7,
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};
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DEF_ENUM_FLAGS_TYPE (enum objfile_flag, objfile_flags);
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@ -81,7 +81,6 @@ static void clear_symtab_users_cleanup (void *ignore);
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/* Global variables owned by this file. */
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int readnow_symbol_files; /* Read full symbols immediately. */
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int readnever_symbol_files; /* Never read full symbols. */
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/* Functions this file defines. */
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@ -1132,12 +1131,6 @@ symbol_file_add_with_addrs (bfd *abfd, const char *name,
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flags |= OBJF_READNOW;
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add_flags &= ~SYMFILE_NO_READ;
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}
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else if (readnever_symbol_files
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|| (parent != NULL && (parent->flags & OBJF_READNEVER)))
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{
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flags |= OBJF_READNEVER;
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add_flags |= SYMFILE_NO_READ;
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}
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/* Give user a chance to burp if we'd be
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interactively wiping out any existing symbols. */
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@ -1601,16 +1594,6 @@ find_separate_debug_file_by_debuglink (struct objfile *objfile)
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return debugfile;
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}
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/* Make sure that OBJF_{READNOW,READNEVER} are not set
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simultaneously. */
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static void
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validate_readnow_readnever (objfile_flags flags)
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{
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if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER))
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error (_("-readnow and -readnever cannot be used simultaneously"));
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}
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/* This is the symbol-file command. Read the file, analyze its
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symbols, and add a struct symtab to a symtab list. The syntax of
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the command is rather bizarre:
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@ -1648,20 +1631,17 @@ symbol_file_command (const char *args, int from_tty)
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{
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if (strcmp (arg, "-readnow") == 0)
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flags |= OBJF_READNOW;
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else if (strcmp (arg, "-readnever") == 0)
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flags |= OBJF_READNEVER;
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else if (*arg == '-')
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error (_("unknown option `%s'"), arg);
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else
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name = arg;
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{
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symbol_file_add_main_1 (arg, add_flags, flags);
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name = arg;
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}
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}
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if (name == NULL)
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error (_("no symbol file name was specified"));
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validate_readnow_readnever (flags);
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symbol_file_add_main_1 (name, add_flags, flags);
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}
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}
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@ -2258,8 +2238,6 @@ add_symbol_file_command (const char *args, int from_tty)
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}
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else if (strcmp (arg, "-readnow") == 0)
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flags |= OBJF_READNOW;
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else if (strcmp (arg, "-readnever") == 0)
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flags |= OBJF_READNEVER;
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else if (strcmp (arg, "-s") == 0)
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{
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expecting_sec_name = 1;
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@ -2270,8 +2248,6 @@ add_symbol_file_command (const char *args, int from_tty)
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}
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}
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validate_readnow_readnever (flags);
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/* This command takes at least two arguments. The first one is a
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filename, and the second is the address where this file has been
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loaded. Abort now if this address hasn't been provided by the
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@ -3902,29 +3878,26 @@ _initialize_symfile (void)
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observer_attach_free_objfile (symfile_free_objfile);
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#define READNOW_READNEVER_HELP \
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#define READNOW_HELP \
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"The '-readnow' option will cause GDB to read the entire symbol file\n\
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immediately. This makes the command slower, but may make future operations\n\
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faster.\n\
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The '-readnever' option will prevent GDB from reading the symbol file's\n\
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symbolic debug information."
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faster."
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c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\
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Load symbol table from executable file FILE.\n\
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Usage: symbol-file [-readnow | -readnever] FILE\n\
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Usage: symbol-file [-readnow] FILE\n\
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The `file' command can also load symbol tables, as well as setting the file\n\
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to execute.\n" READNOW_READNEVER_HELP), &cmdlist);
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to execute.\n" READNOW_HELP), &cmdlist);
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set_cmd_completer (c, filename_completer);
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c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\
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Load symbols from FILE, assuming FILE has been dynamically loaded.\n\
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Usage: add-symbol-file FILE ADDR [-readnow | -readnever | \
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-s SECT-NAME SECT-ADDR]...\n\
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Usage: add-symbol-file FILE ADDR [-readnow | -s SECT-NAME SECT-ADDR]...\n\
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ADDR is the starting address of the file's text.\n\
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Each '-s' argument provides a section name and address, and\n\
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should be specified if the data and bss segments are not contiguous\n\
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with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n"
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READNOW_READNEVER_HELP),
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READNOW_HELP),
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&cmdlist);
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set_cmd_completer (c, filename_completer);
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@ -1,9 +1,3 @@
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2017-12-01 Joel Brobecker <brobecker@adacore.com>
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Sergio Durigan Junior <sergiodj@redhat.com>
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Pedro Alves <palves@redhat.com>
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* gdb.base/readnever.c, gdb.base/readnever.exp: New files.
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2017-12-01 Yao Qi <yao.qi@linaro.org>
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* gdb.arch/aarch64-atomic-inst.exp: Replace mail address with
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@ -1,41 +0,0 @@
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/* Copyright 2016-2017 Free Software Foundation, Inc.
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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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static void
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fun_three (int a, char b, void *c)
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{
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/* Do nothing. */
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}
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static void
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fun_two (unsigned int p, const char *y)
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{
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fun_three ((int) p, '1', (void *) y);
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}
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static void
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fun_one (int *x)
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{
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fun_two (10, (const char *) x);
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}
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int
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main (void)
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{
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int a = 10;
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fun_one (&a);
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return 0;
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}
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@ -1,83 +0,0 @@
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# Copyright 2016-2017 Free Software Foundation, Inc.
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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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#
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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
|
||||
# along with this program. If not, see <http://www.gnu.org/licenses/>.
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standard_testfile .c
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if { [build_executable "failed to build" $testfile $srcfile { debug }] == -1 } {
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untested "Couldn't compile ${srcfile}"
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return -1
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}
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save_vars { GDBFLAGS } {
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append GDBFLAGS " --readnever"
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clean_restart ${binfile}
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}
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if ![runto_main] then {
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perror "couldn't run to breakpoint"
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continue
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}
|
||||
|
||||
gdb_test "break fun_three" \
|
||||
"Breakpoint $decimal at $hex"
|
||||
|
||||
gdb_test "continue" \
|
||||
"Breakpoint $decimal, $hex in fun_three \\(\\)"
|
||||
|
||||
gdb_test "backtrace" \
|
||||
[multi_line "#0 $hex in fun_three \\(\\)" \
|
||||
"#1 $hex in fun_two \\(\\)" \
|
||||
"#2 $hex in fun_one \\(\\)" \
|
||||
"#3 $hex in main \\(\\)" ]
|
||||
|
||||
gdb_test_no_output "maint info symtabs" \
|
||||
"maint info symtabs no output for --readnever"
|
||||
gdb_test_no_output "maint info psymtabs" \
|
||||
"maint info psymtabs no output for --readnever"
|
||||
|
||||
# Test invalid combination of flags.
|
||||
save_vars { GDBFLAGS } {
|
||||
append GDBFLAGS " --readnever --readnow"
|
||||
gdb_exit
|
||||
gdb_spawn
|
||||
|
||||
set test "test readnow and readnever at the same time"
|
||||
gdb_test_multiple "" $test {
|
||||
"'--readnow' and '--readnever' cannot be specified simultaneously" {
|
||||
pass $test
|
||||
set test "expect eof after failure"
|
||||
gdb_test_multiple "" $test {
|
||||
eof {
|
||||
pass $test
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
# Test symbol-file's -readnever option.
|
||||
|
||||
# Restart GDB without the --readnever option.
|
||||
gdb_exit
|
||||
gdb_start
|
||||
gdb_test "symbol-file ${binfile}0.o -readnever" \
|
||||
"Reading symbols from ${binfile}0\.o\.\.\.\\\(no debugging symbols found\\\)\.\.\.done\." \
|
||||
"use symbol-file -readnever"
|
||||
|
||||
gdb_test_no_output "maint info symtabs" \
|
||||
"maint info symtabs no output for symbol-file -readnever"
|
||||
gdb_test_no_output "maint info psymtabs" \
|
||||
"maint info psymtabs no output for symbol-file -readnever"
|
||||
|
|
@ -267,7 +267,6 @@ extern int gdb_in_secondary_prompt_p (struct ui *ui);
|
|||
|
||||
/* From random places. */
|
||||
extern int readnow_symbol_files;
|
||||
extern int readnever_symbol_files;
|
||||
|
||||
/* Perform _initialize initialization. */
|
||||
extern void gdb_init (char *);
|
||||
|
|
|
|||
|
|
@ -2975,33 +2975,31 @@ xcoff_initial_scan (struct objfile *objfile, symfile_add_flags symfile_flags)
|
|||
/* Read the string table. */
|
||||
init_stringtab (abfd, stringtab_offset, objfile);
|
||||
|
||||
/* Read the .debug section, if present and if we're not ignoring
|
||||
it. */
|
||||
if (!(objfile->flags & OBJF_READNEVER))
|
||||
{
|
||||
struct bfd_section *secp;
|
||||
bfd_size_type length;
|
||||
bfd_byte *debugsec = NULL;
|
||||
/* Read the .debug section, if present. */
|
||||
{
|
||||
struct bfd_section *secp;
|
||||
bfd_size_type length;
|
||||
bfd_byte *debugsec = NULL;
|
||||
|
||||
secp = bfd_get_section_by_name (abfd, ".debug");
|
||||
if (secp)
|
||||
{
|
||||
length = bfd_section_size (abfd, secp);
|
||||
if (length)
|
||||
{
|
||||
debugsec
|
||||
= (bfd_byte *) obstack_alloc (&objfile->objfile_obstack,
|
||||
length);
|
||||
secp = bfd_get_section_by_name (abfd, ".debug");
|
||||
if (secp)
|
||||
{
|
||||
length = bfd_section_size (abfd, secp);
|
||||
if (length)
|
||||
{
|
||||
debugsec
|
||||
= (bfd_byte *) obstack_alloc (&objfile->objfile_obstack,
|
||||
length);
|
||||
|
||||
if (!bfd_get_full_section_contents (abfd, secp, &debugsec))
|
||||
{
|
||||
error (_("Error reading .debug section of `%s': %s"),
|
||||
name, bfd_errmsg (bfd_get_error ()));
|
||||
}
|
||||
}
|
||||
}
|
||||
info->debugsec = (char *) debugsec;
|
||||
}
|
||||
if (!bfd_get_full_section_contents (abfd, secp, &debugsec))
|
||||
{
|
||||
error (_("Error reading .debug section of `%s': %s"),
|
||||
name, bfd_errmsg (bfd_get_error ()));
|
||||
}
|
||||
}
|
||||
}
|
||||
info->debugsec = (char *) debugsec;
|
||||
}
|
||||
}
|
||||
|
||||
/* Read the symbols. We keep them in core because we will want to
|
||||
|
|
|
|||
Loading…
Reference in New Issue