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721 Commits

Author SHA1 Message Date
Simon Marchi
0c1bcd2327 gdb: convert obj_section macros to methods 
Convert these three macros to methods of obj_section.  The problem fixed
by the following patch is caused by an out of bound access of the
objfile::section_offsets vector.  Since this is deep in macros, we don't
get a clear backtrace and it's difficult to debug.  Changing that to
methods means we can step in them and break on them.

Because their implementation requires knowing about struct objfile, move
struct obj_section below struct objfile in objfiles.h.

The obj_section_offset was used in one place as an lvalue to set
offsets, in machoread.c.  Replace that with a set_offset method.

Add the objfile::section_offset and objfile::set_section_offset methods
to improve encapsulation (reduce other objects poking into struct
objfile's internals).

gdb/ChangeLog:

	* objfiles.h (struct obj_section): Move down.
	<offset, set_offset, addr, endaddr>: New.
	(obj_section_offset, obj_section_addr, obj_section_endaddr),
	replace all users to use obj_section methods.
	(struct objfile) <section_offset, set_section_offset>: New.

Change-Id: I97e8fcae93ab2353fbdadcb4a5ec10d7949a7334
 2021-06-28 15:28:26 -04:00
Simon Marchi
24b21115f5 gdb: fix tab after space indentation issues 
I spotted some indentation issues where we had some spaces followed by
tabs at beginning of line, that I wanted to fix.  So while at it, I did
a quick grep to find and fix all I could find.

gdb/ChangeLog:

	* Fix tab after space indentation issues throughout.

Change-Id: I1acb414dd9c593b474ae2b8667496584df4316fd
 2021-05-27 15:18:49 -04:00
Simon Marchi
3947f654ea gdb: make add_com_alias accept target as a cmd_list_element 
The alias creation functions currently accept a name to specify the
target command.  They pass this to add_alias_cmd, which needs to lookup
the target command by name.

Given that:

 - We don't support creating an alias for a command before that command
   exists.
 - We always use add_info_alias just after creating that target command,
   and therefore have access to the target command's cmd_list_element.

... change add_com_alias to accept the target command as a
cmd_list_element (other functions are done in subsequent patches).  This
ensures we don't create the alias before the target command, because you
need to get the cmd_list_element from somewhere when you call the alias
creation function.  And it avoids an unecessary command lookup.  So it
seems better to me in every aspect.

gdb/ChangeLog:

	* command.h (add_com_alias): Accept target as
	cmd_list_element.  Update callers.

Change-Id: I24bed7da57221cc77606034de3023fedac015150
 2021-05-27 14:00:07 -04:00
Marco Barisione
2f822da535 gdb: generate the prefix name for prefix commands on demand 
Previously, the prefixname field of struct cmd_list_element was manually
set for prefix commands.  This seems verbose and error prone as it
required every single call to functions adding prefix commands to
specify the prefix name while the same information can be easily
generated.

Historically, this was not possible as the prefix field was null for
many commands, but this was fixed in commit
3f4d92ebdf by Philippe Waroquiers, so
we can rely on the prefix field being set when generating the prefix
name.

This commit also fixes a use after free in this scenario:
* A command gets created via Python (using the gdb.Command class).
  The prefix name member is dynamically allocated.
* An alias to the new command is created. The alias's prefixname is set
  to point to the prefixname for the original command with a direct
  assignment.
* A new command with the same name as the Python command is created.
* The object for the original Python command gets freed and its
  prefixname gets freed as well.
* The alias is updated to point to the new command, but its prefixname
  is not updated so it keeps pointing to the freed one.

gdb/ChangeLog:

	* command.h (add_prefix_cmd): Remove the prefixname argument as
	it can now be generated automatically.  Update all callers.
	(add_basic_prefix_cmd): Ditto.
	(add_show_prefix_cmd): Ditto.
	(add_prefix_cmd_suppress_notification): Ditto.
	(add_abbrev_prefix_cmd): Ditto.
	* cli/cli-decode.c (add_prefix_cmd): Ditto.
	(add_basic_prefix_cmd): Ditto.
	(add_show_prefix_cmd): Ditto.
	(add_prefix_cmd_suppress_notification): Ditto.
	(add_prefix_cmd_suppress_notification): Ditto.
	(add_abbrev_prefix_cmd): Ditto.
	* cli/cli-decode.h (struct cmd_list_element): Replace the
	prefixname member variable with a method which generates the
	prefix name at runtime.  Update all code reading the prefix
	name to use the method, and remove all code setting it.
	* python/py-cmd.c (cmdpy_destroyer): Remove code to free the
	prefixname member as it's now a method.
	(cmdpy_function): Determine if the command is a prefix by
	looking at prefixlist, not prefixname.
 2021-05-12 11:19:22 +01:00
Simon Marchi
c90e7d6352 gdbsupport, gdb: give names to observers 
Give a name to each observer, this will help produce more meaningful
debug message.

gdbsupport/ChangeLog:

	* observable.h (class observable) <struct observer> <observer>:
	Add name parameter.
	<name>: New field.
	<attach>: Add name parameter, update all callers.

Change-Id: Ie0cc4664925215b8d2b09e026011b7803549fba0
 2021-04-24 19:26:41 -04:00
Tom Tromey
3bfa51a75f Add 'domain' parameter to expand_symtabs_matching 
Currently, expand_symtabs_matching only accepts a search_domain
parameter.  However, lookup_symbol uses a domain_enum instead, and the
two, confusingly, do quite different things -- one cannot emulate the
other.  So, this patch adds a domain_enum parameter to
expand_symtabs_matching, with UNDEF_DOMAIN used as a wildcard.

This is another step toward replacing lookup_symbol with
expand_symtabs_matching.

gdb/ChangeLog
2021-04-17  Tom Tromey  <tom@tromey.com>

	* symtab.c (global_symbol_searcher::expand_symtabs): Update.
	* symmisc.c (maintenance_expand_symtabs): Update.
	* symfile.c (expand_symtabs_matching): Update.
	* symfile-debug.c (objfile::expand_symtabs_matching): Add 'domain'
	parameter.
	* quick-symbol.h (struct quick_symbol_functions)
	<expand_symtabs_matching>: Add 'domain' parameter.
	* psymtab.c (recursively_search_psymtabs)
	(psymbol_functions::expand_symtabs_matching): Add 'domain'
	parameter.
	* psympriv.h (struct psymbol_functions) <expand_symtabs_matching>:
	Add 'domain' parameter.
	* objfiles.h (struct objfile) <expand_symtabs_matching>: Add
	'domain' parameter.
	* linespec.c (iterate_over_all_matching_symtabs): Update.
	* dwarf2/read.c (struct dwarf2_gdb_index)
	<expand_symtabs_matching>: Add 'domain' parameter.
	(struct dwarf2_debug_names_index) <expand_symtabs_matching>: Add
	'domain' parameter.
	(dw2_expand_symtabs_matching)
	(dwarf2_gdb_index::expand_symtabs_matching)
	(dw2_debug_names_iterator)
	(dwarf2_debug_names_index::expand_symtabs_matching): Add 'domain'
	parameter.
 2021-04-17 09:35:05 -06:00
Tom Tromey
03a8ea51c3 Add search_flags to expand_symtabs_matching 
This adds a block search flags parameter to expand_symtabs_matching.
All callers are updated to search both the static and global blocks,
as that was the implied behavior before this patch.

This is a step toward replacing lookup_symbol with
expand_symtabs_matching.

gdb/ChangeLog
2021-04-17  Tom Tromey  <tom@tromey.com>

	* symtab.c (global_symbol_searcher::expand_symtabs)
	(default_collect_symbol_completion_matches_break_on): Update.
	* symmisc.c (maintenance_expand_symtabs): Update.
	* symfile.h (expand_symtabs_matching): Add search_flags
	parameter.
	* symfile.c (expand_symtabs_matching): Add search_flags
	parameter.
	* symfile-debug.c (objfile::expand_symtabs_matching): Add
	search_flags parameter.
	* quick-symbol.h (struct quick_symbol_functions)
	<expand_symtabs_matching>: Add search_flags parameter.
	* python/py-symbol.c (gdbpy_lookup_static_symbols): Update.
	* psymtab.c (recursively_search_psymtabs)
	(psymbol_functions::expand_symtabs_matching): Add search_flags
	parameter.
	* psympriv.h (struct psymbol_functions) <expand_symtabs_matching>:
	Add search_flags parameter.
	* objfiles.h (struct objfile) <expand_symtabs_matching>: Add
	search_flags parameter.
	* linespec.c (iterate_over_all_matching_symtabs): Update.
	* dwarf2/read.c (struct dwarf2_gdb_index)
	<expand_symtabs_matching>: Add search_flags parameter.
	(struct dwarf2_debug_names_index) <expand_symtabs_matching>: Add
	search_flags parameter.
	(dw2_map_matching_symbols): Update.
	(dw2_expand_marked_cus, dw2_expand_symtabs_matching)
	(dwarf2_gdb_index::expand_symtabs_matching): Add search_flags
	parameter.
	(dw2_debug_names_iterator): Change block_index to search flags.
	<m_block_index>: Likewise.
	(dw2_debug_names_iterator::next)
	(dwarf2_debug_names_index::lookup_symbol)
	(dwarf2_debug_names_index::expand_symtabs_for_function)
	(dwarf2_debug_names_index::map_matching_symbols)
	(dwarf2_debug_names_index::map_matching_symbols): Update.
	(dwarf2_debug_names_index::expand_symtabs_matching): Add
	search_flags parameter.
	* ada-lang.c (ada_add_global_exceptions)
	(collect_symbol_completion_matches): Update.
 2021-04-17 09:35:05 -06:00
Tom Tromey
df35e6262d Let expand_symtabs_matching short-circuit 
This changes expand_symtabs_exp_notify_ftype to return bool, and
updates all the uses.  Now, if the notification function returns
false, the call is short-circuited and stops examining symtabs.  This
is a step toward replacing map_symtabs_matching_filename with
expand_symtabs_matching.

gdb/ChangeLog
2021-04-17  Tom Tromey  <tom@tromey.com>

	* symtab.c (default_collect_symbol_completion_matches_break_on):
	Update.
	* symfile.h (expand_symtabs_matching): Return bool.
	* symfile.c (expand_symtabs_matching): Return bool.
	* symfile-debug.c (objfile::expand_symtabs_matching): Return
	bool.
	* quick-symbol.h (expand_symtabs_exp_notify_ftype): Return bool.
	(struct quick_symbol_functions) <expand_symtabs_matching>: Return
	bool.
	* psymtab.c (psymbol_functions::expand_symtabs_matching): Return
	bool.
	* psympriv.h (struct psymbol_functions)
	<expand_symtabs_matching>: Return bool.
	* objfiles.h (struct objfile) <expand_symtabs_matching>: Return
	bool.
	* dwarf2/read.c (struct dwarf2_gdb_index)
	<expand_symtabs_matching>: Return bool.
	(struct dwarf2_debug_names_index) <expand_symtabs_matching>:
	Return bool.
	(dw2_expand_symtabs_matching_symbol): Return bool.
	(dw2_expand_symtabs_matching_one, dw2_expand_marked_cus)
	(dw2_expand_symtabs_matching)
	(dwarf2_gdb_index::expand_symtabs_matching)
	(dwarf2_debug_names_index::expand_symtabs_matching)
	(dwarf2_debug_names_index::expand_symtabs_matching): Return bool.
 2021-04-17 09:35:05 -06:00
Simon Marchi
9984dd9994 gdb: use std::string in partial_symtab::partial_symtab / allocate_symtab 
This simplifies the code a bit.

gdb/ChangeLog:

	* psymtab.c (partial_symtab::partial_symtab): Change
	last_objfile_name to be an std::string.
	* symfile.c (allocate_symtab): Likewise.

Change-Id: I3dfe217233ed9346c2abc04a9b1be0df69a90af8
 2021-04-02 11:39:55 -04:00
Tom Tromey
f4655dee77 Use function view in quick_symbol_functions::map_symbol_filenames 
This changes quick_symbol_functions::map_symbol_filenames to use a
function_view, and updates all the uses.  It also changes the final
parameter to 'bool'.  A couple of spots are further updated to use
operator() rather than a lambda.

gdb/ChangeLog
2021-03-26  Tom Tromey  <tom@tromey.com>

	* symtab.c (struct output_source_filename_data): Add 'output'
	method and operator().
	(output_source_filename_data::output): Rename from
	output_source_filename.
	(output_partial_symbol_filename): Remove.
	(info_sources_command): Update.
	(struct add_partial_filename_data): Add operator().
	(add_partial_filename_data::operator()): Rename from
	maybe_add_partial_symtab_filename.
	(make_source_files_completion_list): Update.
	* symfile.c (quick_symbol_functions): Update.
	* symfile-debug.c (objfile::map_symbol_filenames): Update.
	* quick-symbol.h (symbol_filename_ftype): Change type of 'fun' and
	'need_fullname'.  Remove 'data' parameter.
	(struct quick_symbol_functions) <map_symbol_filenames>: Likewise.
	* psymtab.c (psymbol_functions::map_symbol_filenames): Update.
	* psympriv.h (struct psymbol_functions) <map_symbol_filenames>:
	Change type of 'fun' and 'need_fullname'.  Remove 'data'
	parameter.
	* objfiles.h (struct objfile) <map_symbol_filenames>: Change type
	of 'fun' and 'need_fullname'.  Remove 'data' parameter.
	* mi/mi-cmd-file.c (print_partial_file_name): Remove 'ignore'
	parameter.
	(mi_cmd_file_list_exec_source_files): Update.
	* dwarf2/read.c
	(dwarf2_base_index_functions::map_symbol_filenames): Update.
 2021-03-26 13:44:24 -06:00
Simon Marchi
328d42d87e gdb: remove current_top_target function 
The current_top_target function is a hidden dependency on the current
inferior.  Since I'd like to slowly move towards reducing our dependency
on the global current state, remove this function and make callers use

  current_inferior ()->top_target ()

There is no expected change in behavior, but this one step towards
making those callers use the inferior from their context, rather than
refer to the global current inferior.

gdb/ChangeLog:

	* target.h (current_top_target): Remove, make callers use the
	current inferior instead.
	* target.c (current_top_target): Remove.

Change-Id: Iccd457036f84466cdaa3865aa3f9339a24ea001d
 2021-03-24 18:08:24 -04:00
Tom Tromey
eb36a3eb2f Allow multiple partial symbol readers per objfile 
This patch finally changes gdb so that an objfile can have multiple
sources of partial symbols (or mixed partial symbols and other kinds
of indices).

This is done by having each symbol reader create its own
psymbol_functions object and add it to the 'qf' list in the objfile.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* xcoffread.c (xcoff_initial_scan): Create partial symtabs.
	* symfile.c (syms_from_objfile_1, reread_symbols): Update.
	* psymtab.h (make_psymbol_functions): Don't declare.
	* psymtab.c (make_psymbol_functions): Remove.
	(maintenance_print_psymbols): Update.
	* psympriv.h (struct psymbol_functions): Add no-argument
	constructor.
	* objfiles.h (struct objfile) <reset_psymtabs>: Remove.
	<partial_symtabs>: Remove.
	* mdebugread.c (mdebug_build_psymtabs): Create partial symtabs.
	* elfread.c (read_partial_symbols): Update.
	(elf_symfile_read): Remove check for existing partial symbols.
	Don't clear "qf".
	* dwarf2/read.c (dwarf2_has_info): Remove check for existing
	partial symbols.
	(dwarf2_build_psymtabs): Add psymbol_functions parameter.  Create
	partial symtabs.
	* dwarf2/public.h (dwarf2_build_psymtabs): Add psymbol_functions
	parameter.
	* dbxread.c (dbx_symfile_read): Create partial symtabs.
	* ctfread.c (elfctf_build_psymtabs): Create partial symtabs.
 2021-03-20 17:23:46 -06:00
Tom Tromey
e11145903f Switch objfile to hold a list of psymbol readers 
This changes objfile::qf to be a forward_list, and then updates all
the uses to iterate over the list.  Note that there is still only ever
a single element in the list; this is handled by clearing the list
whenever an object is added.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* dwarf2/read.c (dwarf2_build_psymtabs): Update.
	* symfile.c (syms_from_objfile_1, reread_symbols): Update.
	* symfile-debug.c (objfile::has_partial_symbols)
	(objfile::find_last_source_symtab)
	(objfile::forget_cached_source_info)
	(objfile::map_symtabs_matching_filename, objfile::lookup_symbol)
	(objfile::print_stats, objfile::dump)
	(objfile::expand_symtabs_for_function)
	(objfile::expand_all_symtabs)
	(objfile::expand_symtabs_with_fullname)
	(objfile::map_matching_symbols)
	(objfile::expand_symtabs_matching)
	(objfile::find_pc_sect_compunit_symtab)
	(objfile::map_symbol_filenames)
	(objfile::find_compunit_symtab_by_address)
	(objfile::lookup_global_symbol_language)
	(objfile::require_partial_symbols): Update.
	* psymtab.c (maintenance_print_psymbols)
	(maintenance_info_psymtabs, maintenance_check_psymtabs): Update.
	* objfiles.h (struct objfile) <qf>: Now a forward_list.
	* objfiles.c (objfile_relocate1): Update.
	* elfread.c (elf_symfile_read): Update.
 2021-03-20 17:23:45 -06:00
Tom Tromey
d1eef86d12 Introduce objfile::require_partial_symbols 
This adds a new method, objfile::require_partial_symbols.  This reuses
most of the code from the old function in psymtab.c.  That function is
now made static, and simplified.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* symfile.c (read_symbols): Use objfile method.
	* symfile-debug.c (objfile::require_partial_symbols): New method.
	* psymtab.h (require_partial_symbols): Don't declare.
	* psymtab.c (require_partial_symbols): Use objfile method.  Now
	static.
	(psymbol_functions::map_symtabs_matching_filename, OBJFILE)
	(psymbol_functions::lookup_symbol)
	(psymbol_functions::lookup_global_symbol_language)
	(psymbol_functions::find_last_source_symtab)
	(psymbol_functions::forget_cached_source_info)
	(psymbol_functions::print_stats)
	(psymbol_functions::expand_symtabs_for_function)
	(psymbol_functions::expand_all_symtabs)
	(psymbol_functions::expand_symtabs_with_fullname)
	(psymbol_functions::map_symbol_filenames)
	(psymbol_functions::map_matching_symbols)
	(psymbol_functions::expand_symtabs_matching)
	(psymbol_functions::find_compunit_symtab_by_address)
	(maintenance_print_psymbols, maintenance_info_psymtabs)
	(maintenance_check_psymtabs): Update.
	* objfiles.h (struct objfile) <require_partial_symbols>: Declare
	new method.
 2021-03-20 17:23:44 -06:00
Tom Tromey
b29b98cf84 Rearrange psymtab_storage construction 
This changes objfile so that it doesn't construct a psymtab_storage
object until the psymtab functions are installed.  It also applies a
similar treatment to reread_symbols.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* symfile.c (syms_from_objfile_1): Call reset_psymtabs.
	(reread_symbols): Move reset_psymtabs call later.
	* objfiles.c (objfile::objfile): Don't initialize
	partial_symtabs.
 2021-03-20 17:23:44 -06:00
Tom Tromey
17d66340eb Attach partial symtab storage to psymbol_functions 
Currently, the storage for partial symtabs is attached to the objfile.
Ultimately, though, this direct assocation will be removed, and the
storage will be owned by the psymbol_functions object.

This patch is a step toward this goal.  The storage is already managed
as a shared_ptr, to enable cross-objfile sharing, so this adds a
reference from the psymbol_functions, and changes some code in
psymtab.c to use this reference instead.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* dwarf2/read.c (dwarf2_build_psymtabs): Call
	set_partial_symtabs.
	* symfile.c (syms_from_objfile_1, reread_symbols): Update.
	* psymtab.h (make_psymbol_functions): Add partial_symtabs
	parameter.
	* psymtab.c (find_pc_sect_psymtab): Add partial_symtabs
	parameter.
	(psymbol_functions::find_pc_sect_compunit_symtab)
	(psymbol_functions::print_stats, psymbol_functions::dump)
	(psymbol_functions::has_symbols): Update.
	(make_psymbol_functions, dump_psymtab_addrmap): Add
	partial_symtabs parameter.
	(maintenance_print_psymbols): Update.
	(psymbol_functions::expand_symtabs_matching): Update.
	* psympriv.h (struct psymbol_functions): Add constructor.
	<m_partial_symtabs>: New member.
	<set_partial_symtabs>: New method.
 2021-03-20 17:23:44 -06:00
Tom Tromey
39298a5d97 Convert quick_symbol_functions to use methods 
This changes quick_symbol_functions to be a base class with pure
virtual methods, rather than a struct holding function pointers.
Then, objfile is changed to hold a unique_ptr to an instance of this
class.

struct psymbol_functions is put into psympriv.h, and not psymtab.c,
because that is convenient later in the series.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* psympriv.h (struct psymbol_functions): New.
	* symfile.c (syms_from_objfile_1, reread_symbols): Update.
	* symfile-debug.c (objfile::find_compunit_symtab_by_address)
	(objfile::lookup_global_symbol_language): Update.
	* quick-symbol.h (struct quick_symbol_functions): Convert function
	pointers to methods.  Add virtual destructor.
	(quick_symbol_functions_up): New typedef.
	* psymtab.h (psym_functions, dwarf2_gdb_index_functions)
	(dwarf2_debug_names_functions): Don't declare.
	(make_psymbol_functions): Declare.
	* psymtab.c (psymbol_functions::map_symtabs_matching_filename)
	(psymbol_functions::find_pc_sect_compunit_symtab)
	(psymbol_functions::lookup_symbol)
	(psymbol_functions::lookup_global_symbol_language)
	(psymbol_functions::find_last_source_symtab)
	(psymbol_functions::forget_cached_source_info)
	(psymbol_functions::print_stats, psymbol_functions::dump)
	(psymbol_functions::expand_symtabs_for_function)
	(psymbol_functions::expand_all_symtabs)
	(psymbol_functions::expand_symtabs_with_fullname)
	(psymbol_functions::map_symbol_filenames)
	(psymbol_functions::map_matching_symbols)
	(psymbol_functions::expand_symtabs_matching)
	(psymbol_functions::has_symbols)
	(psymbol_functions::find_compunit_symtab_by_address): Rename.
	(psym_functions): Remove.
	(make_psymbol_functions): New function.
	* objfiles.h (struct objfile) <qf>: Change type.
	* elfread.c (elf_symfile_read): Update.
	* dwarf2/read.c (struct dwarf2_base_index_functions)
	(struct dwarf2_gdb_index, struct dwarf2_debug_names_index): New.
	(make_dwarf_gdb_index, make_dwarf_debug_names): New functions.
	(dwarf2_base_index_functions::find_last_source_symtab)
	(dwarf2_base_index_functions::forget_cached_source_info)
	(dwarf2_base_index_functions::map_symtabs_matching_filename)
	(dwarf2_gdb_index::lookup_symbol)
	(dwarf2_base_index_functions::print_stats)
	(dwarf2_gdb_index::dump)
	(dwarf2_gdb_index::expand_symtabs_for_function)
	(dwarf2_base_index_functions::expand_all_symtabs)
	(dwarf2_base_index_functions::expand_symtabs_with_fullname):
	Rename.
	(dwarf2_gdb_index::map_matching_symbols): New method.
	(dwarf2_gdb_index::expand_symtabs_matching): New method.
	(dwarf2_base_index_functions::find_pc_sect_compunit_symtab)
	(dwarf2_base_index_functions::map_symbol_filenames)
	(dwarf2_base_index_functions::has_symbols): Rename.
	(dwarf2_gdb_index_functions): Remove.
	(dwarf2_debug_names_index::lookup_symbol)
	(dwarf2_debug_names_index::dump)
	(dwarf2_debug_names_index::expand_symtabs_for_function)
	(dwarf2_debug_names_index::map_matching_symbols)
	(dwarf2_debug_names_index::expand_symtabs_matching): Rename.
	(dwarf2_debug_names_functions): Remove.
	* dwarf2/public.h (make_dwarf_gdb_index, make_dwarf_debug_names):
	Declare.
 2021-03-20 17:23:42 -06:00
Tom Tromey
5c3f1e5bfc Move sym_fns::qf to objfile 
Currently the "partial" symbol reader is attached to the objfile's
symbol functions.  However, in order to allow multiple separate
partial symbol readers, this association must be changed.  This patch
moves the "qf" member out of sym_fns as a step toward that goal.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* psymtab.c (require_partial_symbols): Check that 'sf' is not
	null.
	* xcoffread.c (xcoff_sym_fns): Update.
	* symfile.h (struct sym_fns) <qf>: Remove.
	* symfile.c (syms_from_objfile_1, reread_symbols): Update.
	* symfile-debug.c (objfile::has_partial_symbols)
	(objfile::find_last_source_symtab)
	(objfile::forget_cached_source_info)
	(objfile::map_symtabs_matching_filename, objfile::lookup_symbol)
	(objfile::print_stats, objfile::dump)
	(objfile::expand_symtabs_for_function)
	(objfile::expand_all_symtabs)
	(objfile::expand_symtabs_with_fullname)
	(objfile::map_matching_symbols)
	(objfile::expand_symtabs_matching)
	(objfile::find_pc_sect_compunit_symtab)
	(objfile::map_symbol_filenames)
	(objfile::find_compunit_symtab_by_address)
	(objfile::lookup_global_symbol_language, debug_sym_fns)
	(install_symfile_debug_logging): Update.
	* objfiles.h (struct objfile) <qf>: New member.
	* mipsread.c (ecoff_sym_fns): Update.
	* machoread.c (macho_sym_fns): Update.
	* elfread.c (elf_sym_fns_gdb_index, elf_sym_fns_debug_names):
	Don't declare.
	(elf_symfile_read, elf_sym_fns, elf_sym_fns_lazy_psyms): Update.
	* dbxread.c (aout_sym_fns): Update.
	* coffread.c (coff_sym_fns): Update.
 2021-03-20 17:23:41 -06:00
Tom Tromey
4d080b4687 Introduce method wrappers for quick_symbol_functions 
This introduces wrappers for each function in quick_symbol_functions.
The wrappers are methods on objfile, and are defined in
symfile-debug.c, so that they can use the symfile_debug variable.
Places that call the quick functions are all updated to call these new
wrapper methods.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* symtab.c (iterate_over_symtabs, expand_symtab_containing_pc)
	(lookup_symbol_via_quick_fns, find_quick_global_symbol_language)
	(basic_lookup_transparent_type_quick)
	(find_pc_sect_compunit_symtab, find_symbol_at_address)
	(find_line_symtab, global_symbol_searcher::expand_symtabs):
	Update.
	* symmisc.c (print_objfile_statistics, dump_objfile)
	(maintenance_expand_symtabs): Update.
	* symfile.c (symbol_file_add_with_addrs)
	(expand_symtabs_matching, map_symbol_filenames): Update.
	* symfile-debug.c (objfile::has_partial_symbols)
	(objfile::find_last_source_symtab)
	(objfile::forget_cached_source_info)
	(objfile::map_symtabs_matching_filename, objfile::lookup_symbol)
	(objfile::print_stats, objfile::dump)
	(objfile::expand_symtabs_for_function)
	(objfile::expand_all_symtabs)
	(objfile::expand_symtabs_with_fullname)
	(objfile::map_matching_symbols)
	(objfile::expand_symtabs_matching)
	(objfile::find_pc_sect_compunit_symtab)
	(objfile::map_symbol_filenames)
	(objfile::find_compunit_symtab_by_address)
	(objfile::lookup_global_symbol_language): New methods.
	(debug_sym_quick_functions): Remove.
	(debug_sym_fns, install_symfile_debug_logging): Update.
	* source.c (forget_cached_source_info_for_objfile)
	(select_source_symtab): Update.
	* objfiles.h (struct objfile): Add methods corresponding to
	quick_symbol_functions.
	* objfiles.c (objfile::has_partial_symbols): Move to
	symfile-debug.c.
	* linespec.c (iterate_over_all_matching_symtabs): Update.
	* cp-support.c (add_symbol_overload_list_qualified): Update.
	* ada-lang.c (add_nonlocal_symbols): Update.
 2021-03-20 17:23:41 -06:00
Tom Tromey
a8ad4f3c17 Change objfile_has_partial_symbols to a method 
This changes objfile_has_partial_symbols to be a method on objfile.

There are some other functions that could benefit from this sort of
change, but this was the only one that was relevant to this series.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* symfile.c (read_symbols): Update.
	* objfiles.h (struct objfile) <has_partial_symbols>: New method.
	(objfile_has_partial_symbols): Don't declare.
	* objfiles.c (objfile::has_partial_symbols): Rename from
	objfile_has_partial_symbols.
	(objfile_has_symbols, have_partial_symbols): Update.
	* elfread.c (elf_symfile_read): Update.
	* dwarf2/read.c (dwarf2_has_info): Update.
	* coffread.c (coff_symfile_read): Update.
 2021-03-20 17:23:41 -06:00
Simon Marchi
fe7a351a8e gdb: move read{now,never}_symbol_files declarations to symfile.h 
... since they are defined in symfile.c.

gdb/ChangeLog:

	* top.h (readnow_symbol_files, readnever_symbol_files): Move
	declarations to ...
	* symfile.h: ... here.
	* symfile.c: Update doc.

Change-Id: Ie35a80d236bea70947bc496f66f62c8c621670b4
 2021-01-12 14:19:49 -05:00
Joel Brobecker
3666a04883 Update copyright year range in all GDB files 
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...

gdb/ChangeLog

        Update copyright year range in copyright header of all GDB files.
 2021-01-01 12:12:21 +04:00
Simon Marchi
dda83cd783 gdb, gdbserver, gdbsupport: fix leading space vs tabs issues 
Many spots incorrectly use only spaces for indentation (for example,
there are a lot of spots in ada-lang.c).  I've always found it awkward
when I needed to edit one of these spots: do I keep the original wrong
indentation, or do I fix it?  What if the lines around it are also
wrong, do I fix them too?  I probably don't want to fix them in the same
patch, to avoid adding noise to my patch.

So I propose to fix as much as possible once and for all (hopefully).

One typical counter argument for this is that it makes code archeology
more difficult, because git-blame will show this commit as the last
change for these lines.  My counter counter argument is: when
git-blaming, you often need to do "blame the file at the parent commit"
anyway, to go past some other refactor that touched the line you are
interested in, but is not the change you are looking for.  So you
already need a somewhat efficient way to do this.

Using some interactive tool, rather than plain git-blame, makes this
trivial.  For example, I use "tig blame <file>", where going back past
the commit that changed the currently selected line is one keystroke.
It looks like Magit in Emacs does it too (though I've never used it).
Web viewers of Github and Gitlab do it too.  My point is that it won't
really make archeology more difficult.

The other typical counter argument is that it will cause conflicts with
existing patches.  That's true... but it's a one time cost, and those
are not conflicts that are difficult to resolve.  I have also tried "git
rebase --ignore-whitespace", it seems to work well.  Although that will
re-introduce the faulty indentation, so one needs to take care of fixing
the indentation in the patch after that (which is easy).

gdb/ChangeLog:

	* aarch64-linux-tdep.c: Fix indentation.
	* aarch64-ravenscar-thread.c: Fix indentation.
	* aarch64-tdep.c: Fix indentation.
	* aarch64-tdep.h: Fix indentation.
	* ada-lang.c: Fix indentation.
	* ada-lang.h: Fix indentation.
	* ada-tasks.c: Fix indentation.
	* ada-typeprint.c: Fix indentation.
	* ada-valprint.c: Fix indentation.
	* ada-varobj.c: Fix indentation.
	* addrmap.c: Fix indentation.
	* addrmap.h: Fix indentation.
	* agent.c: Fix indentation.
	* aix-thread.c: Fix indentation.
	* alpha-bsd-nat.c: Fix indentation.
	* alpha-linux-tdep.c: Fix indentation.
	* alpha-mdebug-tdep.c: Fix indentation.
	* alpha-nbsd-tdep.c: Fix indentation.
	* alpha-obsd-tdep.c: Fix indentation.
	* alpha-tdep.c: Fix indentation.
	* amd64-bsd-nat.c: Fix indentation.
	* amd64-darwin-tdep.c: Fix indentation.
	* amd64-linux-nat.c: Fix indentation.
	* amd64-linux-tdep.c: Fix indentation.
	* amd64-nat.c: Fix indentation.
	* amd64-obsd-tdep.c: Fix indentation.
	* amd64-tdep.c: Fix indentation.
	* amd64-windows-tdep.c: Fix indentation.
	* annotate.c: Fix indentation.
	* arc-tdep.c: Fix indentation.
	* arch-utils.c: Fix indentation.
	* arch/arm-get-next-pcs.c: Fix indentation.
	* arch/arm.c: Fix indentation.
	* arm-linux-nat.c: Fix indentation.
	* arm-linux-tdep.c: Fix indentation.
	* arm-nbsd-tdep.c: Fix indentation.
	* arm-pikeos-tdep.c: Fix indentation.
	* arm-tdep.c: Fix indentation.
	* arm-tdep.h: Fix indentation.
	* arm-wince-tdep.c: Fix indentation.
	* auto-load.c: Fix indentation.
	* auxv.c: Fix indentation.
	* avr-tdep.c: Fix indentation.
	* ax-gdb.c: Fix indentation.
	* ax-general.c: Fix indentation.
	* bfin-linux-tdep.c: Fix indentation.
	* block.c: Fix indentation.
	* block.h: Fix indentation.
	* blockframe.c: Fix indentation.
	* bpf-tdep.c: Fix indentation.
	* break-catch-sig.c: Fix indentation.
	* break-catch-syscall.c: Fix indentation.
	* break-catch-throw.c: Fix indentation.
	* breakpoint.c: Fix indentation.
	* breakpoint.h: Fix indentation.
	* bsd-uthread.c: Fix indentation.
	* btrace.c: Fix indentation.
	* build-id.c: Fix indentation.
	* buildsym-legacy.h: Fix indentation.
	* buildsym.c: Fix indentation.
	* c-typeprint.c: Fix indentation.
	* c-valprint.c: Fix indentation.
	* c-varobj.c: Fix indentation.
	* charset.c: Fix indentation.
	* cli/cli-cmds.c: Fix indentation.
	* cli/cli-decode.c: Fix indentation.
	* cli/cli-decode.h: Fix indentation.
	* cli/cli-script.c: Fix indentation.
	* cli/cli-setshow.c: Fix indentation.
	* coff-pe-read.c: Fix indentation.
	* coffread.c: Fix indentation.
	* compile/compile-cplus-types.c: Fix indentation.
	* compile/compile-object-load.c: Fix indentation.
	* compile/compile-object-run.c: Fix indentation.
	* completer.c: Fix indentation.
	* corefile.c: Fix indentation.
	* corelow.c: Fix indentation.
	* cp-abi.h: Fix indentation.
	* cp-namespace.c: Fix indentation.
	* cp-support.c: Fix indentation.
	* cp-valprint.c: Fix indentation.
	* cris-linux-tdep.c: Fix indentation.
	* cris-tdep.c: Fix indentation.
	* darwin-nat-info.c: Fix indentation.
	* darwin-nat.c: Fix indentation.
	* darwin-nat.h: Fix indentation.
	* dbxread.c: Fix indentation.
	* dcache.c: Fix indentation.
	* disasm.c: Fix indentation.
	* dtrace-probe.c: Fix indentation.
	* dwarf2/abbrev.c: Fix indentation.
	* dwarf2/attribute.c: Fix indentation.
	* dwarf2/expr.c: Fix indentation.
	* dwarf2/frame.c: Fix indentation.
	* dwarf2/index-cache.c: Fix indentation.
	* dwarf2/index-write.c: Fix indentation.
	* dwarf2/line-header.c: Fix indentation.
	* dwarf2/loc.c: Fix indentation.
	* dwarf2/macro.c: Fix indentation.
	* dwarf2/read.c: Fix indentation.
	* dwarf2/read.h: Fix indentation.
	* elfread.c: Fix indentation.
	* eval.c: Fix indentation.
	* event-top.c: Fix indentation.
	* exec.c: Fix indentation.
	* exec.h: Fix indentation.
	* expprint.c: Fix indentation.
	* f-lang.c: Fix indentation.
	* f-typeprint.c: Fix indentation.
	* f-valprint.c: Fix indentation.
	* fbsd-nat.c: Fix indentation.
	* fbsd-tdep.c: Fix indentation.
	* findvar.c: Fix indentation.
	* fork-child.c: Fix indentation.
	* frame-unwind.c: Fix indentation.
	* frame-unwind.h: Fix indentation.
	* frame.c: Fix indentation.
	* frv-linux-tdep.c: Fix indentation.
	* frv-tdep.c: Fix indentation.
	* frv-tdep.h: Fix indentation.
	* ft32-tdep.c: Fix indentation.
	* gcore.c: Fix indentation.
	* gdb_bfd.c: Fix indentation.
	* gdbarch.sh: Fix indentation.
	* gdbarch.c: Re-generate
	* gdbarch.h: Re-generate.
	* gdbcore.h: Fix indentation.
	* gdbthread.h: Fix indentation.
	* gdbtypes.c: Fix indentation.
	* gdbtypes.h: Fix indentation.
	* glibc-tdep.c: Fix indentation.
	* gnu-nat.c: Fix indentation.
	* gnu-nat.h: Fix indentation.
	* gnu-v2-abi.c: Fix indentation.
	* gnu-v3-abi.c: Fix indentation.
	* go32-nat.c: Fix indentation.
	* guile/guile-internal.h: Fix indentation.
	* guile/scm-cmd.c: Fix indentation.
	* guile/scm-frame.c: Fix indentation.
	* guile/scm-iterator.c: Fix indentation.
	* guile/scm-math.c: Fix indentation.
	* guile/scm-ports.c: Fix indentation.
	* guile/scm-pretty-print.c: Fix indentation.
	* guile/scm-value.c: Fix indentation.
	* h8300-tdep.c: Fix indentation.
	* hppa-linux-nat.c: Fix indentation.
	* hppa-linux-tdep.c: Fix indentation.
	* hppa-nbsd-nat.c: Fix indentation.
	* hppa-nbsd-tdep.c: Fix indentation.
	* hppa-obsd-nat.c: Fix indentation.
	* hppa-tdep.c: Fix indentation.
	* hppa-tdep.h: Fix indentation.
	* i386-bsd-nat.c: Fix indentation.
	* i386-darwin-nat.c: Fix indentation.
	* i386-darwin-tdep.c: Fix indentation.
	* i386-dicos-tdep.c: Fix indentation.
	* i386-gnu-nat.c: Fix indentation.
	* i386-linux-nat.c: Fix indentation.
	* i386-linux-tdep.c: Fix indentation.
	* i386-nto-tdep.c: Fix indentation.
	* i386-obsd-tdep.c: Fix indentation.
	* i386-sol2-nat.c: Fix indentation.
	* i386-tdep.c: Fix indentation.
	* i386-tdep.h: Fix indentation.
	* i386-windows-tdep.c: Fix indentation.
	* i387-tdep.c: Fix indentation.
	* i387-tdep.h: Fix indentation.
	* ia64-libunwind-tdep.c: Fix indentation.
	* ia64-libunwind-tdep.h: Fix indentation.
	* ia64-linux-nat.c: Fix indentation.
	* ia64-linux-tdep.c: Fix indentation.
	* ia64-tdep.c: Fix indentation.
	* ia64-tdep.h: Fix indentation.
	* ia64-vms-tdep.c: Fix indentation.
	* infcall.c: Fix indentation.
	* infcmd.c: Fix indentation.
	* inferior.c: Fix indentation.
	* infrun.c: Fix indentation.
	* iq2000-tdep.c: Fix indentation.
	* language.c: Fix indentation.
	* linespec.c: Fix indentation.
	* linux-fork.c: Fix indentation.
	* linux-nat.c: Fix indentation.
	* linux-tdep.c: Fix indentation.
	* linux-thread-db.c: Fix indentation.
	* lm32-tdep.c: Fix indentation.
	* m2-lang.c: Fix indentation.
	* m2-typeprint.c: Fix indentation.
	* m2-valprint.c: Fix indentation.
	* m32c-tdep.c: Fix indentation.
	* m32r-linux-tdep.c: Fix indentation.
	* m32r-tdep.c: Fix indentation.
	* m68hc11-tdep.c: Fix indentation.
	* m68k-bsd-nat.c: Fix indentation.
	* m68k-linux-nat.c: Fix indentation.
	* m68k-linux-tdep.c: Fix indentation.
	* m68k-tdep.c: Fix indentation.
	* machoread.c: Fix indentation.
	* macrocmd.c: Fix indentation.
	* macroexp.c: Fix indentation.
	* macroscope.c: Fix indentation.
	* macrotab.c: Fix indentation.
	* macrotab.h: Fix indentation.
	* main.c: Fix indentation.
	* mdebugread.c: Fix indentation.
	* mep-tdep.c: Fix indentation.
	* mi/mi-cmd-catch.c: Fix indentation.
	* mi/mi-cmd-disas.c: Fix indentation.
	* mi/mi-cmd-env.c: Fix indentation.
	* mi/mi-cmd-stack.c: Fix indentation.
	* mi/mi-cmd-var.c: Fix indentation.
	* mi/mi-cmds.c: Fix indentation.
	* mi/mi-main.c: Fix indentation.
	* mi/mi-parse.c: Fix indentation.
	* microblaze-tdep.c: Fix indentation.
	* minidebug.c: Fix indentation.
	* minsyms.c: Fix indentation.
	* mips-linux-nat.c: Fix indentation.
	* mips-linux-tdep.c: Fix indentation.
	* mips-nbsd-tdep.c: Fix indentation.
	* mips-tdep.c: Fix indentation.
	* mn10300-linux-tdep.c: Fix indentation.
	* mn10300-tdep.c: Fix indentation.
	* moxie-tdep.c: Fix indentation.
	* msp430-tdep.c: Fix indentation.
	* namespace.h: Fix indentation.
	* nat/fork-inferior.c: Fix indentation.
	* nat/gdb_ptrace.h: Fix indentation.
	* nat/linux-namespaces.c: Fix indentation.
	* nat/linux-osdata.c: Fix indentation.
	* nat/netbsd-nat.c: Fix indentation.
	* nat/x86-dregs.c: Fix indentation.
	* nbsd-nat.c: Fix indentation.
	* nbsd-tdep.c: Fix indentation.
	* nios2-linux-tdep.c: Fix indentation.
	* nios2-tdep.c: Fix indentation.
	* nto-procfs.c: Fix indentation.
	* nto-tdep.c: Fix indentation.
	* objfiles.c: Fix indentation.
	* objfiles.h: Fix indentation.
	* opencl-lang.c: Fix indentation.
	* or1k-tdep.c: Fix indentation.
	* osabi.c: Fix indentation.
	* osabi.h: Fix indentation.
	* osdata.c: Fix indentation.
	* p-lang.c: Fix indentation.
	* p-typeprint.c: Fix indentation.
	* p-valprint.c: Fix indentation.
	* parse.c: Fix indentation.
	* ppc-linux-nat.c: Fix indentation.
	* ppc-linux-tdep.c: Fix indentation.
	* ppc-nbsd-nat.c: Fix indentation.
	* ppc-nbsd-tdep.c: Fix indentation.
	* ppc-obsd-nat.c: Fix indentation.
	* ppc-ravenscar-thread.c: Fix indentation.
	* ppc-sysv-tdep.c: Fix indentation.
	* ppc64-tdep.c: Fix indentation.
	* printcmd.c: Fix indentation.
	* proc-api.c: Fix indentation.
	* producer.c: Fix indentation.
	* producer.h: Fix indentation.
	* prologue-value.c: Fix indentation.
	* prologue-value.h: Fix indentation.
	* psymtab.c: Fix indentation.
	* python/py-arch.c: Fix indentation.
	* python/py-bpevent.c: Fix indentation.
	* python/py-event.c: Fix indentation.
	* python/py-event.h: Fix indentation.
	* python/py-finishbreakpoint.c: Fix indentation.
	* python/py-frame.c: Fix indentation.
	* python/py-framefilter.c: Fix indentation.
	* python/py-inferior.c: Fix indentation.
	* python/py-infthread.c: Fix indentation.
	* python/py-objfile.c: Fix indentation.
	* python/py-prettyprint.c: Fix indentation.
	* python/py-registers.c: Fix indentation.
	* python/py-signalevent.c: Fix indentation.
	* python/py-stopevent.c: Fix indentation.
	* python/py-stopevent.h: Fix indentation.
	* python/py-threadevent.c: Fix indentation.
	* python/py-tui.c: Fix indentation.
	* python/py-unwind.c: Fix indentation.
	* python/py-value.c: Fix indentation.
	* python/py-xmethods.c: Fix indentation.
	* python/python-internal.h: Fix indentation.
	* python/python.c: Fix indentation.
	* ravenscar-thread.c: Fix indentation.
	* record-btrace.c: Fix indentation.
	* record-full.c: Fix indentation.
	* record.c: Fix indentation.
	* reggroups.c: Fix indentation.
	* regset.h: Fix indentation.
	* remote-fileio.c: Fix indentation.
	* remote.c: Fix indentation.
	* reverse.c: Fix indentation.
	* riscv-linux-tdep.c: Fix indentation.
	* riscv-ravenscar-thread.c: Fix indentation.
	* riscv-tdep.c: Fix indentation.
	* rl78-tdep.c: Fix indentation.
	* rs6000-aix-tdep.c: Fix indentation.
	* rs6000-lynx178-tdep.c: Fix indentation.
	* rs6000-nat.c: Fix indentation.
	* rs6000-tdep.c: Fix indentation.
	* rust-lang.c: Fix indentation.
	* rx-tdep.c: Fix indentation.
	* s12z-tdep.c: Fix indentation.
	* s390-linux-tdep.c: Fix indentation.
	* score-tdep.c: Fix indentation.
	* ser-base.c: Fix indentation.
	* ser-mingw.c: Fix indentation.
	* ser-uds.c: Fix indentation.
	* ser-unix.c: Fix indentation.
	* serial.c: Fix indentation.
	* sh-linux-tdep.c: Fix indentation.
	* sh-nbsd-tdep.c: Fix indentation.
	* sh-tdep.c: Fix indentation.
	* skip.c: Fix indentation.
	* sol-thread.c: Fix indentation.
	* solib-aix.c: Fix indentation.
	* solib-darwin.c: Fix indentation.
	* solib-frv.c: Fix indentation.
	* solib-svr4.c: Fix indentation.
	* solib.c: Fix indentation.
	* source.c: Fix indentation.
	* sparc-linux-tdep.c: Fix indentation.
	* sparc-nbsd-tdep.c: Fix indentation.
	* sparc-obsd-tdep.c: Fix indentation.
	* sparc-ravenscar-thread.c: Fix indentation.
	* sparc-tdep.c: Fix indentation.
	* sparc64-linux-tdep.c: Fix indentation.
	* sparc64-nbsd-tdep.c: Fix indentation.
	* sparc64-obsd-tdep.c: Fix indentation.
	* sparc64-tdep.c: Fix indentation.
	* stabsread.c: Fix indentation.
	* stack.c: Fix indentation.
	* stap-probe.c: Fix indentation.
	* stubs/ia64vms-stub.c: Fix indentation.
	* stubs/m32r-stub.c: Fix indentation.
	* stubs/m68k-stub.c: Fix indentation.
	* stubs/sh-stub.c: Fix indentation.
	* stubs/sparc-stub.c: Fix indentation.
	* symfile-mem.c: Fix indentation.
	* symfile.c: Fix indentation.
	* symfile.h: Fix indentation.
	* symmisc.c: Fix indentation.
	* symtab.c: Fix indentation.
	* symtab.h: Fix indentation.
	* target-float.c: Fix indentation.
	* target.c: Fix indentation.
	* target.h: Fix indentation.
	* tic6x-tdep.c: Fix indentation.
	* tilegx-linux-tdep.c: Fix indentation.
	* tilegx-tdep.c: Fix indentation.
	* top.c: Fix indentation.
	* tracefile-tfile.c: Fix indentation.
	* tracepoint.c: Fix indentation.
	* tui/tui-disasm.c: Fix indentation.
	* tui/tui-io.c: Fix indentation.
	* tui/tui-regs.c: Fix indentation.
	* tui/tui-stack.c: Fix indentation.
	* tui/tui-win.c: Fix indentation.
	* tui/tui-winsource.c: Fix indentation.
	* tui/tui.c: Fix indentation.
	* typeprint.c: Fix indentation.
	* ui-out.h: Fix indentation.
	* unittests/copy_bitwise-selftests.c: Fix indentation.
	* unittests/memory-map-selftests.c: Fix indentation.
	* utils.c: Fix indentation.
	* v850-tdep.c: Fix indentation.
	* valarith.c: Fix indentation.
	* valops.c: Fix indentation.
	* valprint.c: Fix indentation.
	* valprint.h: Fix indentation.
	* value.c: Fix indentation.
	* value.h: Fix indentation.
	* varobj.c: Fix indentation.
	* vax-tdep.c: Fix indentation.
	* windows-nat.c: Fix indentation.
	* windows-tdep.c: Fix indentation.
	* xcoffread.c: Fix indentation.
	* xml-syscall.c: Fix indentation.
	* xml-tdesc.c: Fix indentation.
	* xstormy16-tdep.c: Fix indentation.
	* xtensa-config.c: Fix indentation.
	* xtensa-linux-nat.c: Fix indentation.
	* xtensa-linux-tdep.c: Fix indentation.
	* xtensa-tdep.c: Fix indentation.

gdbserver/ChangeLog:

	* ax.cc: Fix indentation.
	* dll.cc: Fix indentation.
	* inferiors.h: Fix indentation.
	* linux-low.cc: Fix indentation.
	* linux-nios2-low.cc: Fix indentation.
	* linux-ppc-ipa.cc: Fix indentation.
	* linux-ppc-low.cc: Fix indentation.
	* linux-x86-low.cc: Fix indentation.
	* linux-xtensa-low.cc: Fix indentation.
	* regcache.cc: Fix indentation.
	* server.cc: Fix indentation.
	* tracepoint.cc: Fix indentation.

gdbsupport/ChangeLog:

	* common-exceptions.h: Fix indentation.
	* event-loop.cc: Fix indentation.
	* fileio.cc: Fix indentation.
	* filestuff.cc: Fix indentation.
	* gdb-dlfcn.cc: Fix indentation.
	* gdb_string_view.h: Fix indentation.
	* job-control.cc: Fix indentation.
	* signals.cc: Fix indentation.

Change-Id: I4bad7ae6be0fbe14168b8ebafb98ffe14964a695
 2020-11-02 10:28:45 -05:00
Tom Tromey
d9eebde018 Change add_target_sections_of_objfile to method on program_space 
This changes add_target_sections_of_objfile to be a method on
program_space.  It is renamed to be another overload of
add_target_sections, because they are semantically equivalent in a
sense.

gdb/ChangeLog
2020-10-29  Tom Tromey  <tom@tromey.com>

	* symfile.c (add_symbol_file_command): Update.
	* exec.c (program_space::add_target_sections): Rename.
	* symfile-mem.c (symbol_file_add_from_memory): Update.
	* progspace.h (struct program_space) <add_target_sections>:
	Declare new overload.
	* exec.h (add_target_sections_of_objfile): Don't declare.
 2020-10-29 15:04:40 -06:00
Tom Tromey
2a3f84af53 Change remove_target_sections to method on program_space 
This changes remove_target_sections to be a method on program_space.
This makes sense because this function manipulates data that is
attached to the program space.

gdb/ChangeLog
2020-10-29  Tom Tromey  <tom@tromey.com>

	* progspace.h (struct program_space) <remove_target_sections>:
	Declare.
	* exec.c (program_space::remove_target_sections): Now a method.
	* exec.h (remove_target_sections): Don't declare.
 2020-10-29 15:04:39 -06:00
Tom Tromey
a42d7dd873 Remove symfile_objfile macro 
This removes the symfile_objfile macro, in favor of just spelling out
the member access.

gdb/ChangeLog
2020-10-29  Tom Tromey  <tom@tromey.com>

	* windows-tdep.c (windows_solib_create_inferior_hook): Update.
	* target.c (info_target_command): Update.
	* symfile.c (syms_from_objfile_1, finish_new_objfile)
	(symbol_file_clear, reread_symbols): Update.
	* symfile-mem.c (add_symbol_file_from_memory_command): Update.
	* stabsread.c (scan_file_globals): Update.
	* solib.c (update_solib_list): Update.
	* solib-svr4.c (elf_locate_base, open_symbol_file_object)
	(svr4_fetch_objfile_link_map, enable_break)
	(svr4_relocate_main_executable)
	(svr4_iterate_over_objfiles_in_search_order): Update.
	* solib-frv.c (lm_base, enable_break)
	(frv_relocate_main_executable): Update.
	(main_got, frv_fdpic_find_canonical_descriptor): Update.
	(frv_fetch_objfile_link_map): Update.
	* solib-dsbt.c (lm_base, dsbt_relocate_main_executable): Update.
	* solib-darwin.c (darwin_solib_create_inferior_hook): Update.
	* solib-aix.c (solib_aix_solib_create_inferior_hook): Update.
	* remote.c (remote_target::get_offsets): Update.
	(remote_target::start_remote)
	(extended_remote_target::post_attach): Update.
	* objfiles.c (entry_point_address_query): Update.
	* nto-procfs.c (nto_procfs_target::create_inferior): Update.
	* minsyms.c (get_symbol_leading_char): Update.
	* frame.c (inside_main_func): Update.
	* progspace.h (symfile_objfile): Remove macro.
 2020-10-29 15:04:37 -06:00
Tom Tromey
7e10abd146 Remove the exec_bfd macro 
This removes the exec_bfd macro, in favor of new accessors on
program_space.  In one spot the accessor can't be used; but this is
still a big improvement over the macro, IMO.

gdb/ChangeLog
2020-10-29  Tom Tromey  <tom@tromey.com>

	* windows-tdep.c (windows_solib_create_inferior_hook): Update.
	* symfile.c (reread_symbols): Update.
	* symfile-mem.c (add_symbol_file_from_memory_command)
	(add_vsyscall_page): Update.
	* source-cache.c (source_cache::get_plain_source_lines): Update.
	* solib-svr4.c (find_program_interpreter, elf_locate_base)
	(svr4_current_sos_direct, svr4_exec_displacement)
	(svr4_relocate_main_executable): Update.
	(svr4_iterate_over_objfiles_in_search_order): Update.
	* solib-frv.c (enable_break2, enable_break): Update.
	* solib-dsbt.c (lm_base, enable_break): Update.
	* solib-darwin.c (find_program_interpreter)
	(darwin_solib_create_inferior_hook): Update.
	* sol-thread.c (rw_common, ps_pdmodel): Update.
	* rs6000-nat.c (rs6000_nat_target::create_inferior): Update.
	* remote.c (compare_sections_command)
	(remote_target::trace_set_readonly_regions): Update.
	* remote-sim.c (get_sim_inferior_data)
	(gdbsim_target::create_inferior, gdbsim_target::create_inferior): Update.
	(gdbsim_target_open, gdbsim_target::files_info): Update.
	* exec.h (exec_bfd): Remove macro.
	* progspace.c (initialize_progspace): Update.
	* proc-service.c (ps_addr_to_core_addr, core_addr_to_ps_addr):
	Update.
	* nto-procfs.c (nto_procfs_target::post_attach)
	(nto_procfs_target::create_inferior): Update.
	* maint.c (maintenance_info_sections): Update.
	* linux-thread-db.c (thread_db_target::get_thread_local_address):
	Update.
	* infcmd.c (post_create_inferior): Update.
	* gcore.c (default_gcore_arch, default_gcore_target): Update.
	(objfile_find_memory_regions): Update.
	* exec.c (validate_exec_file, exec_file_attach)
	(exec_read_partial_read_only, print_section_info): Update.
	* corelow.c (core_target_open): Update.
	* corefile.c (reopen_exec_file, validate_files): Update.
	* arm-tdep.c (gdb_print_insn_arm): Update.
	* arch-utils.c (gdbarch_update_p, default_print_insn): Update.
	* progspace.h (struct program_space) <exec_bfd, set_exec_bfd>: New
	methods.
 2020-10-29 15:04:36 -06:00
Tom Tromey
d7a78e5c41 Change target_section_table to std::vector alias 
Because target_section_table only holds a vector, and because it is
used in an "open" way, this patch makes it just be an alias for the
std::vector specialization.  This makes the code less wordy.  If we do
ever want to add more specialized behavior to this type, it's simple
enough to convert it back to a struct with the few needed methods
implied by this change.

gdb/ChangeLog
2020-10-12  Tom Tromey  <tom@tromey.com>

	* target.h (struct target_ops) <get_section_table>: Update.
	(target_get_section_table): Update.
	* target.c (target_get_section_table, target_section_by_addr)
	(memory_xfer_partial_1): Update.
	* target-section.h (target_section_table): Now an alias.
	* target-delegates.c: Rebuild.
	* target-debug.h (target_debug_print_target_section_table_p):
	Rename from target_debug_print_struct_target_section_table_p.
	* symfile.c (build_section_addr_info_from_section_table): Update.
	* solib.c (solib_map_sections, solib_contains_address_p): Update.
	* solib-svr4.c (scan_dyntag): Update.
	* solib-dsbt.c (scan_dyntag): Update.
	* remote.c (remote_target::remote_xfer_live_readonly_partial):
	Update.
	* record-full.c (record_full_core_target::xfer_partial): Update.
	* progspace.h (struct program_space) <target_sections>: Update.
	* exec.h (print_section_info): Update.
	* exec.c (exec_target::close, build_section_table)
	(add_target_sections, add_target_sections_of_objfile)
	(remove_target_sections, exec_on_vfork)
	(section_table_available_memory)
	(section_table_xfer_memory_partial)
	(exec_target::get_section_table, exec_target::xfer_partial)
	(print_section_info, set_section_command)
	(exec_set_section_address, exec_target::has_memory): Update.
	* corelow.c (core_target::build_file_mappings)
	(core_target::xfer_partial, core_target::info_proc_mappings)
	(core_target::info_proc_mappings): Update.
	* bfd-target.c (class target_bfd): Update
 2020-10-12 20:18:48 -06:00
Tom Tromey
bb2a67773c Use a std::vector in target_section_table 
This changes target_section_table to wrap a std::vector.  This
simplifies some code, and also enables the simplifications coming in
the subsequent patches.

Note that for solib, I chose to have it use a pointer to a
target_section_table.  This is more convoluted than would be ideal,
but I didn't want to convert solib to new/delete as a prerequisite for
this series.

gdb/ChangeLog
2020-10-12  Tom Tromey  <tom@tromey.com>

	* target.c (target_section_by_addr, memory_xfer_partial_1):
	Update.
	* target-section.h (struct target_section_table): Use
	std::vector.
	* symfile.h (build_section_addr_info_from_section_table): Take a
	target_section_table.
	* symfile.c (build_section_addr_info_from_section_table): Take a
	target_section_table.
	* solist.h (struct so_list) <sections>: Change type.
	<sections_end>: Remove.
	* solib.c (solib_map_sections, clear_so, solib_read_symbols)
	(solib_contains_address_p): Update.
	* solib-svr4.c (scan_dyntag): Update.
	* solib-dsbt.c (scan_dyntag): Update.
	* remote.c (remote_target::remote_xfer_live_readonly_partial):
	Update.
	* record-full.c (record_full_core_start, record_full_core_end):
	Remove.
	(record_full_core_sections): New global.
	(record_full_core_open_1, record_full_core_target::xfer_partial):
	Update.
	* exec.h (build_section_table, section_table_xfer_memory_partial)
	(add_target_sections): Take a target_section_table.
	* exec.c (exec_file_attach, clear_section_table): Update.
	(resize_section_table): Remove.
	(build_section_table, add_target_sections): Take a
	target_section_table.
	(add_target_sections_of_objfile, remove_target_sections)
	(exec_on_vfork): Update.
	(section_table_available_memory): Take a target_section_table.
	(section_table_read_available_memory): Update.
	(section_table_xfer_memory_partial): Take a target_section_table.
	(print_section_info, set_section_command)
	(exec_set_section_address, exec_target::has_memory): Update.
	* corelow.c (class core_target) <m_core_section_table,
	m_core_file_mappings>: Remove braces.
	<~core_target>: Remove.
	(core_target::core_target): Update.
	(core_target::~core_target): Remove.
	(core_target::build_file_mappings)
	(core_target::xfer_memory_via_mappings)
	(core_target::xfer_partial, core_target::info_proc_mappings):
	Update.
	* bfd-target.c (target_bfd::xfer_partial): Update.
	(target_bfd::target_bfd): Update.
	(target_bfd::~target_bfd): Remove.
 2020-10-12 20:18:47 -06:00
Tom Tromey
5486c51748 Use gdb_bfd_sections in generic_load 
This changes generic_load to avoid bfd_map_over_sections, in favor of
iteration.

gdb/ChangeLog
2020-09-19  Tom Tromey  <tom@tromey.com>

	* symfile.c (add_section_size_callback): Remove.
	(load_one_section): Rename from load_section_callback.  Change
	parameters.
	(generic_load): Use foreach.
 2020-09-19 11:54:55 -06:00
Tom Tromey
ad7277dab9 Use gdb_bfd_sections in symfile.c 
This changes some functions in symfile.c to avoid
bfd_map_over_sections, in favor of iteration.  Some helper types can
also be removed due to this change.

gdb/ChangeLog
2020-09-19  Tom Tromey  <tom@tromey.com>

	* symfile.h: (find_lowest_section): Don't declare.
	* symfile.c (find_lowest_section): Now static.  Change
	parameters.
	(struct place_section_arg): Remove.
	(place_section): Change parameters.
	(addr_info_make_relative): Use foreach.
	(symfile_dummy_outputs): Remove.
	(default_symfile_relocate): Use foreach.
 2020-09-19 11:54:51 -06:00
Andrew Burgess
e171d6f15e gdb: Convert la_filename_extensions to a method 
Convert language_data::la_filename_extensions member variable to a
virtual method language_defn::filename_extensions.

The new method returns a vector of filename extensions, which means
that where previously we needed a NULL marker on the end of the list,
we can now discard this.

All of the old arrays that contained the extensions now become static
data within each languages filename_extensions method.

I've updated the single use of the filename_extensions method to make
use of this method returning a vector.  And, just in case anyone
accidentally adds a NULL marked into a languages extensions list, I've
added a new assert in add_filename_language (symtab.c) to catch this.

gdb/ChangeLog:

	* ada-lang.c (ada_extensions): Delete, moved into
	ada_language::filename_extensions.
	(ada_language_data): Remove la_filename_extensions initializer.
	(ada_language::filename_extensions): New member function.
	* c-lang.c (c_extensions): Delete, moved into
	c_language::filename_extensions.
	(c_language_data): Remove la_filename_extensions initializer.
	(c_language::filename_extensions): New member function.
	(cplus_extensions): Delete, moved into
	cplus_language::filename_extensions.
	(cplus_language_data): Remove la_filename_extensions initializer.
	(cplus_language::filename_extensions): New member function.
	(asm_extensions): Delete, moved into
	asm_language::filename_extensions.
	(asm_language_data): Remove la_filename_extensions initializer.
	(asm_language::filename_extensions): New member function.
	(minimal_language_data): Remove la_filename_extensions
	initializer.
	* d-lang.c (d_extensions): Delete, moved into
	d_language::filename_extensions.
	(d_language_data): Remove la_filename_extensions initializer.
	(d_language::filename_extensions): New member function.
	* f-lang.c (f_extensions): Delete, moved into
	f_language::filename_extensions.
	(f_language_data): Remove la_filename_extensions initializer.
	(f_language::filename_extensions): New member function.
	* go-lang.c (go_language_data): Remove la_filename_extensions
	initializer.
	* language.c (add_set_language_command): Update now that
	filename_extensions returns a vector.
	(unknown_language_data): Remove la_filename_extensions
	initializer.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove la_filename_extensions field.
	(language_defn::filename_extensions): New member function.
	* m2-lang.c (m2_language_data): Remove la_filename_extensions
	initializer.
	* objc-lang.c (objc_extensions): Delete, moved into
	objc_language::filename_extensions.
	(objc_language_data): Remove la_filename_extensions initializer.
	(objc_language::filename_extensions): New member function.
	* opencl-lang.c (opencl_language_data): Remove
	la_filename_extensions initializer.
	* p-lang.c (pascal_extensions): Delete, moved into
	pascal_language::filename_extensions.
	(pascal_language_data): Remove la_filename_extensions initializer.
	(pascal_language::filename_extensions): New member function.
	* rust-lang.c (rust_extensions): Delete, moved into
	rust_language::filename_extensions.
	(rust_language_data): Remove la_filename_extensions initializer.
	(rust_language::filename_extensions): New member function.
	* symfile.c (add_filename_language): Add new assert.
 2020-09-16 10:16:46 +01:00
Philippe Waroquiers
a8654e7d78 Fixes PR 25475: ensure exec-file-mismatch "ask" always asks in case of mismatch. 
As explained in https://sourceware.org/bugzilla/show_bug.cgi?id=25475,
when the currently loaded file has no debug symbol,
symbol_file_add_with_addrs does not ask a confirmation to the user
before loading the new symbol file.  The behaviour is not consistent
when symbol_file_add_with_addrs is called due to exec-file-mismatch "ask"
setting.

The PR discusses several solutions/approaches.
The preferred approach (suggested by Joel) is to ensure that GDB always asks
a confirmation when it loads a new symbol file due to exec-file-mismatch,
using a new SYMFILE add-flag.

I tested this manually.  If OK, we can remove the bypass introduced by Tom
in 6b9374f1, in order to always answer to the 'load' question.

gdb/ChangeLog
2020-06-24  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* symfile-add-flags.h: New flag SYMFILE_ALWAYS_CONFIRM.
	* exec.c (validate_exec_file): If from_tty, set both
	SYMFILE_VERBOSE (== from_tty) and SYMFILE_ALWAYS_CONFIRM.
	* symfile.c (symbol_file_add_with_addrs): if always_confirm
	and from_tty, unconditionally ask a confirmation.
 2020-06-24 22:21:07 +02:00
Simon Marchi
84d53fa9d2 gdb: remove unnecessary NULL checks before xfree 
I was inspired by a series of patches merged by Alan Modra in the other
projects, so I did the same in GDB with a bit of Coccinelle and grep.

This patch removes the unnecessary NULL checks before calls to xfree.
They are unnecessary because xfree already does a NULL check.  Since
free is supposed to handle NULL values correctly, the NULL check in
xfree itself is also questionable, but I've left it there for now.

gdb/ChangeLog:

	* coffread.c (patch_type): Remove NULL check before xfree.
	* corefile.c (set_gnutarget): Likewise.
	* cp-abi.c (set_cp_abi_as_auto_default): Likewise.
	* exec.c (build_section_table): Likewise.
	* remote.c (remote_target::pass_signals): Likewise.
	* utils.c (n_spaces): Likewise.
	* cli/cli-script.c (document_command): Likewise.
	* i386-windows-tdep.c (core_process_module_section): Likewise.
	* linux-fork.c (struct fork_info) <~fork_info>: Likewise.
 2020-05-21 13:12:29 -04:00
Simon Marchi
9d428aae67 gdb: reset/recompute objfile section offsets in reread_symbols 
This patch started as an investigation of this bug, where the program is
re-compiled between two "start" runs:

    $ ./gdb -nx --data-directory=data-directory -q a.out
    Reading symbols from a.out...
    (gdb) start
    Temporary breakpoint 1 at 0x1131: file test.c, line 1.
    Starting program: /home/smarchi/build/wt/test/gdb/a.out

    Temporary breakpoint 1, main () at test.c:1
    1       int main() { return 0; }

    *** re-compile a.out ***

    (gdb) start
    The program being debugged has been started already.
    Start it from the beginning? (y or n) y
    `/home/smarchi/build/wt/test/gdb/a.out' has changed; re-reading symbols.
    Temporary breakpoint 2 at 0x555555555129: file test.c, line 1.
    Starting program: /home/smarchi/build/wt/test/gdb/a.out
    warning: Probes-based dynamic linker interface failed.
    Reverting to original interface.

    Temporary breakpoint 2, main () at test.c:1
    1       int main() { return 0; }
    (gdb)

To reproduce the bug, a.out needs to be a position-independent
executable (PIE).

Here's what happens:

1) We first read the symbols of a.out.  The section offsets in the
   objfile are all 0, so the symbols are created unrelocated.
2) The breakpoint on main is created, as you can see the breakpoint
   address (derived from the `main` symbol with value 0x1129) is still
   unrelocated (0x1131).  Since the program is not yet started, we don't
   know at which base address the executable is going to end at.
   Everything good so far.
3) The execution starts, GDB finds out the executable's base address,
   fills the objfile's section_offsets vector with a bunch of offsets,
   and relocates the symbols with those offsets.  The latter modifies
   the symbol values (the `main` symbol is changed from 0x1129 to
   0x555555555129).
4) We `start` again, we detect that `a.out` has changed, the
   `reread_symbols` function kicks in.  It tries to reset everything
   in the `struct objfile` corresponding to `a.out`, except that it
   leaves the `section_offsets` vector there.
5) `reread_symbols` reads the debug info (calls `read_symbols`).  As the
   DWARF info is read, symbols are created using the old offsets still
   in `section_offsets`.  For example, the `main` symbol is created with
   the value 0x555555555129.  Even though at this point there is no
   process, so that address is bogus.  There's probably more that
   depends on section_offsets that is not done correctly.
6) Something in the SVR4 solib handling goes wrong, probably because
   of something that went wrong in (5).  I can't quite explain it (if
   somebody would like to provide a more complete analysis, please go
   ahead).  But this is where it takes a wrong turn:

    #0  elf_locate_base () at /home/smarchi/src/wt/test/gdb/solib-svr4.c:799
    #1  0x000055f0a5bee6d5 in locate_base (info=<optimized out>) at /home/smarchi/src/wt/test/gdb/solib-svr4.c:848
    #2  0x000055f0a5bf1771 in svr4_handle_solib_event () at /home/smarchi/src/wt/test/gdb/solib-svr4.c:1955
    #3  0x000055f0a5c0ff92 in handle_solib_event () at /home/smarchi/src/wt/test/gdb/solib.c:1258

   In the non-working case (without this patch), elf_locate_base returns
   0, whereas in the working case (with this patch) it returns a valid
   address, as we should expect.

This patch fixes this by making reread_symbols clear the
`section_offsets` vector, and re-create it by calling `sym_offsets`.
This is analogous to what syms_from_objfile_1 does.  I didn't seem
absolutely necessary, but I also made it clear the various
`sect_index_*` fields, since their values no longer make sense (they
describe the old executable, and are indices in the now cleared
sections/section_offsets arrays).

I don't really like the approach taken by reread_symbols, trying to
reset everything manually on the objfile object, instead of, for
example, creating a new one from scratch.  But I don't know enough yet
to propose a better solution.

One more reason I think this patch is needed is that the number of
sections of the new executable could be different from the number of
sections of the old executable.  So if we don't re-create the
section_offsets array, not only we'll have wrong offsets, but we could
make accesses past the array.

Something else that silently fails (but doesn't seem to have
consequences) is the prologue analysis when we try to create the
breakpoint on `main`.  Since the `main` symbol has the wrong value
0x555555555129, we try to access memory in that area, which fails.  This
can be observed by debugging gdb and using `catch throw`.  Before the
process is started, we need to access the memory at its unrelocated
address, 0x1129, which will read memory from the ELF file.  This is now
what happens, with this patch applied.

It silently fails, probably because commit 46a62268b, "Catch exceptions
thrown from gdbarch_skip_prologue", papered over the problem and added
an empty catch clause.  I'm quite sure that the root cause then was the
one fixed by this patch.

This fixes tests gdb.ada/exec_changed.exp and gdb.base/reread.exp for
me.

gdb/ChangeLog:

	* symfile.c (reread_symbols): Clear objfile's section_offsets
	vector and section indices, re-compute them by calling
	sym_offsets.
 2020-05-20 15:45:03 -04:00
Alan Modra
c7e9767920 Use bfd_get_filename throughout gdb 
This patch makes gdb use the inline accessor for all bfd->filename
read accesses.

	* coff-pe-read.c (read_pe_exported_syms): Use bfd_get_filename
	rather than accessing bfd->filename directly.
	* dtrace-probe.c (dtrace_static_probe_ops::get_probes): Likewise,
	and use bfd_section_name.
	* dwarf2/frame.c (decode_frame_entry): Likewise.
	* exec.c (exec_set_section_address): Likewise.
	* solib-aix.c (solib_aix_bfd_open): Likewise.
	* stap-probe.c (get_stap_base_address): Likewise.
	* symfile.c (reread_symbols): Likewise.
 2020-05-20 07:59:00 +09:30
Pedro Alves
ad80db5b9f Default gdb_bfd_open's fd parameter to -1 
A following patch will add one more defaulted parameter.

gdb/ChangeLog:
2020-05-19  Pedro Alves  <palves@redhat.com>

	* gdb_bfd.h: (gdb_bfd_open): Default to 'fd' parameter to -1.
	Adjust all callers.
 2020-05-19 18:36:24 +01:00
Simon Marchi
9005fbbb00 gdb: make symfile_segment_data::segment_info an std::vector 
Change the symfile_segment_data::segment_info array to be an
std::vector.  No functional changes are expected.

gdb/ChangeLog:

	* symfile.h (struct symfile_segment_data)
	<~symfile_segment_data>: Remove.
	<segment_info>: Change to std::vector.
	* symfile.c (default_symfile_segments): Update.
	* elfread.c (elf_symfile_segments): Update.
 2020-05-19 12:18:36 -04:00
Simon Marchi
68b888fff3 gdb: use std::vector to store segments in symfile_segment_data 
Instead of maintaining two vectors, I added a small `segment` class
which holds both the base address and size of one segment and replaced
the two `segment_bases` and `segment_sizes` arrays with a single vector.

The rest of the changes are straightforward, no behavior changes are
expected.

gdb/ChangeLog:

	* symfile.h (struct symfile_segment_data) <struct segment>: New.
	<segments>: New.
	<segment_bases, segment_sizes>: Remove.
	* symfile.c (default_symfile_segments): Update.
	* elfread.c (elf_symfile_segments): Update.
	* remote.c (remote_target::get_offsets): Update.
	* solib-target.c (solib_target_relocate_section_addresses):
	Update.
 2020-05-19 12:18:36 -04:00
Simon Marchi
62982abdee gdb: allocate symfile_segment_data with new 
- Allocate this structure with new instead of XNEW, use a unique pointer
  to manage its lifetime.
- Change a few functions to return a unique   pointer instead of a
  plain pointer.
- Change free_symfile_segment_data to be symfile_segment_data's
  destructor.

gdb/ChangeLog:

	* symfile.h (struct symfile_segment_data): Initialize fields.
	<~symfile_segment_data>: Add.
	(symfile_segment_data_up): New.
	(struct sym_fns) <sym_segments>: Return a
	symfile_segment_data_up.
	(default_symfile_segments): Return a symfile_segment_data_up.
	(free_symfile_segment_data): Remove.
	(get_symfile_segment_data): Return a symfile_segment_data_up.
	* symfile.c (default_symfile_segments): Likewise.
	(get_symfile_segment_data): Likewise.
	(free_symfile_segment_data): Remove.
	(symfile_find_segment_sections): Update.
	* elfread.c (elf_symfile_segments): Return a
	symfile_segment_data_up.
	* remote.c (remote_target::get_offsets): Update.
	* solib-target.c (solib_target_relocate_section_addresses):
	Update.
	* symfile-debug.c (debug_sym_segments): Return a
	symfile_segment_data_up.
 2020-05-19 12:18:36 -04:00
Philippe Waroquiers
57b4f16e49 Ensure class_alias is only used for user-defined aliases. 
This commit finally does the (small) change that started this patch
series.

It ensures that the class_alias is only used for user-defined aliases.
So, the few GDB pre-defined aliases that were using the 'class_alias'
class are now using a real help class, typically the class of
the aliased command.

gdb/ChangeLog

2020-05-15  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* command.h (enum command_class): Improve comments, document
	that class_alias is for user-defined aliases, give the class
	name for each class, remove unused class_xdb.
	* cli/cli-decode.c (add_com_alias): Document THECLASS intended usage.
	* breakpoint.c (_initialize_breakpoint): Replace class_alias
	by a precise class.
	* infcmd.c (_initialize_infcmd): Likewise.
	* reverse.c (_initialize_reverse): Likewise.
	* stack.c (_initialize_stack): Likewise.
	* symfile.c (_initialize_symfile): Likewise.
	* tracepoint.c (_initialize_tracepoint): Likewise.

gdb/testsuite/ChangeLog

2020-05-15  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* gdb.base/alias.exp: Verify 'help aliases' shows user defined aliases.
 2020-05-15 22:17:46 +02:00
Tom Tromey
08feed99cb Change get_objfile_arch to a method on objfile 
This changes get_objfile_arch to be a new inline method,
objfile::arch.

To my surprise, this function came up while profiling DWARF psymbol
reading.  Making this change improved performance from 1.986 seconds
to 1.869 seconds.  Both measurements were done by taking the mean of
10 runs on a fixed copy of the gdb executable.

gdb/ChangeLog
2020-04-18  Tom Tromey  <tom@tromey.com>

	* xcoffread.c (enter_line_range, scan_xcoff_symtab): Update.
	* value.c (value_fn_field): Update.
	* valops.c (find_function_in_inferior)
	(value_allocate_space_in_inferior): Update.
	* tui/tui-winsource.c (tui_update_source_windows_with_line):
	Update.
	* tui/tui-source.c (tui_source_window::set_contents): Update.
	* symtab.c (lookup_global_or_static_symbol)
	(find_function_start_sal_1, skip_prologue_sal)
	(print_msymbol_info, find_gnu_ifunc, symbol_arch): Update.
	* symmisc.c (dump_msymbols, dump_symtab_1)
	(maintenance_print_one_line_table): Update.
	* symfile.c (init_entry_point_info, section_is_mapped)
	(list_overlays_command, simple_read_overlay_table)
	(simple_overlay_update_1): Update.
	* stap-probe.c (handle_stap_probe): Update.
	* stabsread.c (dbx_init_float_type, define_symbol)
	(read_one_struct_field, read_enum_type, read_range_type): Update.
	* source.c (info_line_command): Update.
	* python/python.c (gdbpy_source_objfile_script)
	(gdbpy_execute_objfile_script): Update.
	* python/py-type.c (save_objfile_types): Update.
	* python/py-objfile.c (py_free_objfile): Update.
	* python/py-inferior.c (python_new_objfile): Update.
	* psymtab.c (psym_find_pc_sect_compunit_symtab, dump_psymtab)
	(dump_psymtab_addrmap_1, maintenance_info_psymtabs)
	(maintenance_check_psymtabs): Update.
	* printcmd.c (info_address_command): Update.
	* objfiles.h (struct objfile) <arch>: New method, from
	get_objfile_arch.
	(get_objfile_arch): Don't declare.
	* objfiles.c (get_objfile_arch): Remove.
	(filter_overlapping_sections): Update.
	* minsyms.c (msymbol_is_function): Update.
	* mi/mi-symbol-cmds.c (mi_cmd_symbol_list_lines)
	(output_nondebug_symbol): Update.
	* mdebugread.c (parse_symbol, basic_type, parse_partial_symbols)
	(mdebug_expand_psymtab): Update.
	* machoread.c (macho_add_oso_symfile): Update.
	* linux-tdep.c (linux_infcall_mmap, linux_infcall_munmap):
	Update.
	* linux-fork.c (checkpoint_command): Update.
	* linespec.c (convert_linespec_to_sals): Update.
	* jit.c (finalize_symtab): Update.
	* infrun.c (insert_exception_resume_from_probe): Update.
	* ia64-tdep.c (ia64_find_unwind_table): Update.
	* hppa-tdep.c (internalize_unwinds): Update.
	* gdbtypes.c (get_type_arch, init_float_type, objfile_type):
	Update.
	* gcore.c (call_target_sbrk): Update.
	* elfread.c (record_minimal_symbol, elf_symtab_read)
	(elf_rel_plt_read, elf_gnu_ifunc_record_cache)
	(elf_gnu_ifunc_resolve_by_got): Update.
	* dwarf2/read.c (create_addrmap_from_index)
	(create_addrmap_from_aranges, dw2_find_pc_sect_compunit_symtab)
	(read_debug_names_from_section)
	(process_psymtab_comp_unit_reader, add_partial_symbol)
	(add_partial_subprogram, process_full_comp_unit)
	(read_file_scope, read_func_scope, read_lexical_block_scope)
	(read_call_site_scope, dwarf2_ranges_read)
	(dwarf2_record_block_ranges, dwarf2_add_field)
	(mark_common_block_symbol_computed, read_tag_pointer_type)
	(read_tag_string_type, dwarf2_init_float_type)
	(dwarf2_init_complex_target_type, read_base_type)
	(partial_die_info::read, partial_die_info::read)
	(read_attribute_value, dwarf_decode_lines_1, new_symbol)
	(dwarf2_fetch_die_loc_sect_off): Update.
	* dwarf2/loc.c (dwarf2_find_location_expression)
	(class dwarf_evaluate_loc_desc, rw_pieced_value)
	(dwarf2_evaluate_loc_desc_full, dwarf2_locexpr_baton_eval)
	(dwarf2_loc_desc_get_symbol_read_needs)
	(locexpr_describe_location_piece, locexpr_describe_location_1)
	(loclist_describe_location): Update.
	* dwarf2/index-write.c (write_debug_names): Update.
	* dwarf2/frame.c (dwarf2_build_frame_info): Update.
	* dtrace-probe.c (dtrace_process_dof): Update.
	* dbxread.c (read_dbx_symtab, dbx_end_psymtab)
	(process_one_symbol): Update.
	* ctfread.c (ctf_init_float_type, read_base_type): Update.
	* coffread.c (coff_symtab_read, enter_linenos, decode_base_type)
	(coff_read_enum_type): Update.
	* cli/cli-cmds.c (edit_command, list_command): Update.
	* buildsym.c (buildsym_compunit::finish_block_internal): Update.
	* breakpoint.c (create_overlay_event_breakpoint)
	(create_longjmp_master_breakpoint)
	(create_std_terminate_master_breakpoint)
	(create_exception_master_breakpoint, get_sal_arch): Update.
	* block.c (block_gdbarch): Update.
	* annotate.c (annotate_source_line): Update.
 2020-04-18 08:35:04 -06:00
Tom Tromey
0743fc83c0 Replace most calls to help_list and cmd_show_list 
Currently there are many prefix commands that do nothing but call
either help_list or cmd_show_list.  I happened to notice that one such
call, for "set print type", used the wrong command list parameter,
causing incorrect output.

Rather than fix this bug in isolation, I decided to eliminate this
possibility by adding two new ways to add prefix commands, which
simply route the call to help_list or cmd_show_list, as appropriate.
This makes it impossible for a mismatch to occur.

In some cases, a bit of output was removed; however, I don't think
this output in general was very useful.  It seemed redundant with
what's already printed by help_list.  A representative example is this
hunk, removed from ada-lang.c:

-  printf_unfiltered (_(\
-"\"set ada\" must be followed by the name of a setting.\n"));

This simplified the CLI style set/show commands quite a bit, and
allowed the deletion of a macro.

This also cleans up some unusual code in windows-tdep.c.

Tested on x86-64 Fedora 30.  Note that I have no way to build the
go32-nat.c change.

gdb/ChangeLog
2020-04-17  Tom Tromey  <tromey@adacore.com>

	* auto-load.c (show_auto_load_cmd): Remove.
	(auto_load_show_cmdlist_get): Use add_show_prefix_cmd.
	* arc-tdep.c (_initialize_arc_tdep): Use add_show_prefix_cmd.
	(maintenance_print_arc_command): Remove.
	* tui/tui-win.c (tui_command): Remove.
	(tui_get_cmd_list): Use add_basic_prefix_cmd.
	* tui/tui-layout.c (tui_layout_command): Remove.
	(_initialize_tui_layout): Use add_basic_prefix_cmd.
	* python/python.c (user_set_python, user_show_python): Remove.
	(_initialize_python): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* guile/guile.c (set_guile_command, show_guile_command): Remove.
	(install_gdb_commands): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(info_guile_command): Remove.
	* dwarf2/read.c (set_dwarf_cmd, show_dwarf_cmd): Remove.
	(_initialize_dwarf2_read): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* cli/cli-style.h (class cli_style_option) <add_setshow_commands>:
	Remove do_set and do_show parameters.
	* cli/cli-style.c (set_style, show_style): Remove.
	(_initialize_cli_style): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(cli_style_option::add_setshow_commands): Remove do_set and
	do_show parameters.
	(cli_style_option::add_setshow_commands): Use
	add_basic_prefix_cmd, add_show_prefix_cmd.
	(STYLE_ADD_SETSHOW_COMMANDS): Remove macro.
	(set_style_name): Remove.
	* cli/cli-dump.c (dump_command, append_command): Remove.
	(srec_dump_command, ihex_dump_command, verilog_dump_command)
	(tekhex_dump_command, binary_dump_command)
	(binary_append_command): Remove.
	(_initialize_cli_dump): Use add_basic_prefix_cmd.
	* windows-tdep.c (w32_prefix_command_valid): Remove global.
	(init_w32_command_list): Remove; move into ...
	(_initialize_windows_tdep): ... here.  Use add_basic_prefix_cmd.
	* valprint.c (set_print, show_print, set_print_raw)
	(show_print_raw): Remove.
	(_initialize_valprint): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* typeprint.c (set_print_type, show_print_type): Remove.
	(_initialize_typeprint): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* record.c (set_record_command, show_record_command): Remove.
	(_initialize_record): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* cli/cli-cmds.c (_initialize_cli_cmds): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(info_command, show_command, set_debug, show_debug): Remove.
	* top.h (set_history, show_history): Don't declare.
	* top.c (set_history, show_history): Remove.
	* target-descriptions.c (set_tdesc_cmd, show_tdesc_cmd)
	(unset_tdesc_cmd): Remove.
	(_initialize_target_descriptions): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* symtab.c (info_module_command): Remove.
	(_initialize_symtab): Use add_basic_prefix_cmd.
	* symfile.c (overlay_command): Remove.
	(_initialize_symfile): Use add_basic_prefix_cmd.
	* sparc64-tdep.c (info_adi_command): Remove.
	(_initialize_sparc64_adi_tdep): Use add_basic_prefix_cmd.
	* sh-tdep.c (show_sh_command, set_sh_command): Remove.
	(_initialize_sh_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* serial.c (serial_set_cmd, serial_show_cmd): Remove.
	(_initialize_serial): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* ser-tcp.c (set_tcp_cmd, show_tcp_cmd): Remove.
	(_initialize_ser_tcp): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* rs6000-tdep.c (set_powerpc_command, show_powerpc_command)
	(_initialize_rs6000_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* riscv-tdep.c (show_riscv_command, set_riscv_command)
	(show_debug_riscv_command, set_debug_riscv_command): Remove.
	(_initialize_riscv_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* remote.c (remote_command, set_remote_cmd): Remove.
	(_initialize_remote): Use add_basic_prefix_cmd.
	* record-full.c (set_record_full_command)
	(show_record_full_command): Remove.
	(_initialize_record_full): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* record-btrace.c (cmd_set_record_btrace)
	(cmd_show_record_btrace, cmd_set_record_btrace_bts)
	(cmd_show_record_btrace_bts, cmd_set_record_btrace_pt)
	(cmd_show_record_btrace_pt): Remove.
	(_initialize_record_btrace): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* ravenscar-thread.c (set_ravenscar_command)
	(show_ravenscar_command): Remove.
	(_initialize_ravenscar): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* mips-tdep.c (show_mips_command, set_mips_command)
	(_initialize_mips_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* maint.c (maintenance_command, maintenance_info_command)
	(maintenance_check_command, maintenance_print_command)
	(maintenance_set_cmd, maintenance_show_cmd): Remove.
	(_initialize_maint_cmds): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	(show_per_command_cmd): Remove.
	* maint-test-settings.c (maintenance_set_test_settings_cmd):
	Remove.
	(maintenance_show_test_settings_cmd): Remove.
	(_initialize_maint_test_settings): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* maint-test-options.c (maintenance_test_options_command):
	Remove.
	(_initialize_maint_test_options): Use add_basic_prefix_cmd.
	* macrocmd.c (macro_command): Remove
	(_initialize_macrocmd): Use add_basic_prefix_cmd.
	* language.c (set_check, show_check): Remove.
	(_initialize_language): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* infcmd.c (unset_command): Remove.
	(_initialize_infcmd): Use add_basic_prefix_cmd.
	* i386-tdep.c (set_mpx_cmd, show_mpx_cmd): Remove.
	(_initialize_i386_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* go32-nat.c (go32_info_dos_command): Remove.
	(_initialize_go32_nat): Use add_basic_prefix_cmd.
	* cli/cli-decode.c (do_prefix_cmd, add_basic_prefix_cmd)
	(do_show_prefix_cmd, add_show_prefix_cmd): New functions.
	* frame.c (set_backtrace_cmd, show_backtrace_cmd): Remove.
	(_initialize_frame): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* dcache.c (set_dcache_command, show_dcache_command): Remove.
	(_initialize_dcache): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* cp-support.c (maint_cplus_command): Remove.
	(_initialize_cp_support): Use add_basic_prefix_cmd.
	* btrace.c (maint_btrace_cmd, maint_btrace_set_cmd)
	(maint_btrace_show_cmd, maint_btrace_pt_set_cmd)
	(maint_btrace_pt_show_cmd, _initialize_btrace): Use
	add_basic_prefix_cmd, add_show_prefix_cmd.
	* breakpoint.c (save_command): Remove.
	(_initialize_breakpoint): Use add_basic_prefix_cmd.
	* arm-tdep.c (set_arm_command, show_arm_command): Remove.
	(_initialize_arm_tdep): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* ada-lang.c (maint_set_ada_cmd, maint_show_ada_cmd)
	(set_ada_command, show_ada_command): Remove.
	(_initialize_ada_language): Use add_basic_prefix_cmd,
	add_show_prefix_cmd.
	* command.h (add_basic_prefix_cmd, add_show_prefix_cmd): Declare.

gdb/testsuite/ChangeLog
2020-04-17  Tom Tromey  <tromey@adacore.com>

	* gdb.cp/maint.exp (test_help): Simplify multiple_help_body.
	Update tests.
	* gdb.btrace/cpu.exp: Update tests.
	* gdb.base/maint.exp: Update tests.
	* gdb.base/default.exp: Update tests.
	* gdb.base/completion.exp: Update tests.
 2020-04-17 15:13:41 -06:00
Tom de Vries
c1a66c0629 [gdb] Expand symbolless symtabs using maint expand-symtabs 
Consider this test-case, consisting of header file hello.h:
...
inline static const char*
foo (void)
{
  return "foo";
}
...
and source file hello.c:
...
int
main (void)
{
  printf ("hello: %s\n", foo ());
  return 0;
}
...
compiled with -g:
...
$ gcc hello.c -g
...

When trying to expand the partial symtab for hello.h:
...
$ gdb -batch \
  -iex "set language c" \
  a.out \
  -ex "maint expand-symtabs hello.h" \
  -ex "maint info psymtabs"
...
we in fact find that the partial symtab for hello.h (and corresponding
includer partial symtab hello.c) have not been expanded:
...
  { psymtab hello.h ((struct partial_symtab *) 0x27cf070)
    readin no
  ...
  { psymtab hello.c ((struct partial_symtab *) 0x2cf09e0)
    readin no
...

This is due to the recursively_search_psymtabs call in
psym_expand_symtabs_matching:
...
      if (recursively_search_psymtabs (ps, objfile, domain,
                                      lookup_name, symbol_matcher))
...
which always returns false for symbolless partial symtabs.

The same problem occurs with CUs where the dwarf is generated by gas
--gdwarf-2 for a foo.S: if we read such a test-case with -readnow, we'll have
a symbolless symtab for foo.S.  But if we read the test-case with partial
symtabs, and expand those using "maint expand-symtabs", the foo.S psymtab
remains unexpanded.

Fix this by passing a NULL symbol_matcher and lookup_name to
expand_symtabs_matching in maintenance_expand_symtabs, and skipping the call
to recursively_search_psymtabs if symbol_matcher == NULL and
lookup_name == NULL.

Build and tested on x86_64-linux, with native.

In addition, tested test-case with target boards cc-with-gdb-index.exp,
cc-with-debug-names.exp and readnow.exp.

gdb/ChangeLog:

2020-04-14  Tom de Vries  <tdevries@suse.de>

	PR symtab/25720
	* symmisc.c (maintenance_expand_symtabs): Call expand_symtabs_matching
	with NULL symbol_matcher and lookup_name.
	* psymtab.c (psym_expand_symtabs_matching): Handle NULL symbol_matcher
	and lookup_name.
	* dwarf2/read.c (dw2_expand_symtabs_matching)
	(dw2_debug_names_expand_symtabs_matching): Same.
	* symfile.h (struct quick_symbol_functions::expand_symtabs_matching):
	Make lookup_name a pointer.  Update comment.
	* symtab.c (global_symbol_searcher::expand_symtabs): Handle
	lookup_name being a pointer.
	* symfile.c (expand_symtabs_matching): Same.
	* symfile-debug.c (debug_qf_expand_symtabs_matching): Same.
	* linespec.c (iterate_over_all_matching_symtabs): Same.

gdb/testsuite/ChangeLog:

2020-04-14  Tom de Vries  <tdevries@suse.de>

	PR symtab/25720
	* gdb.base/maint-expand-symbols-header-file.c: New test.
	* gdb.base/maint-expand-symbols-header-file.exp: New file.
	* gdb.base/maint-expand-symbols-header-file.h: New test.
 2020-04-14 15:08:42 +02:00
Tom Tromey
0c4311ab90 Avoid infinite recursion in get_msymbol_address 
Sometimes, get_msymbol_address can cause infinite recursion, leading
to a crash.  This was reported previously here:

https://sourceware.org/pipermail/gdb-patches/2019-November/162154.html

A user on irc reported this as well, and with his help and the help of
a friend of his, we found that the problem occurred because, when
reloading a separate debug objfile, the objfile would lose the
OBJF_MAINLINE flag.  This would cause some symbols from this separate
debug objfile to be marked "maybe_copied" -- but then
get_msymbol_address could find the same symbol and fail as reported.

This patch fixes the bug by preserving OBJF_MAINLINE.

No test case, unfortunately, because I could not successfully make
one.

gdb/ChangeLog
2020-04-10  Tom Tromey  <tromey@adacore.com>

	* symfile.c (symbol_file_add_separate): Preserve OBJF_MAINLINE.
 2020-04-10 07:21:16 -06:00
Tom de Vries
d321419811 [gdb] Use partial symbol table to find language for main 
When language is set to auto, part of loading an executable is to update the
language accordingly.  This is implemented by set_initial_language.

The implementation of set_initial_language works as follows:
- check if any objfile in the progspace has name_of_main/language_of_main
  set, and if so, use the first one found. [ This is what you get f.i. when
  using dwarf with DW_AT_main_subprogram. ]
- otherwise, check for known names in the minimal symbols, and either:
- use the associated language if any (f.i. for ada), or
- lookup the symbol in the symtab for the name and use the symbol language
  (f.i. for c/c++).

The symbol lookup can be slow though.

In the case of the cc1 binary from PR23710 comment 1, getting to the initial
prompt takes ~8s:
...
$ time.sh gdb cc1 -batch -ex "show language"
The current source language is "auto; currently c++".
maxmem: 1272260
real: 8.05
user: 7.73
system: 0.38
...
but if we skip guessing the initial language by setting it instead, it takes
only ~4s:
...
$ time.sh gdb -iex "set language c++" cc1 -batch -ex "show language"
The current source language is "c++".
maxmem: 498272
real: 3.99
user: 3.90
system: 0.15
...

In both cases, we load the partial symbols for the executable, but in the
first case only we also do a lookup of main, which causes the corresponding
partial symtab to be expanded into a full symtab.

Ideally, we'd like to get the language of the symbol without triggering
expansion into a full symtab, and get the speedup without having to set the
language manually.

There's a related fixme in the header comment of set_initial_language:
...
/* Set the initial language.

   FIXME: A better solution would be to record the language in the
   psymtab when reading partial symbols, and then use it (if known) to
   set the language.  This would be a win for formats that encode the
   language in an easily discoverable place, such as DWARF.  For
   stabs, we can jump through hoops looking for specially named
   symbols or try to intuit the language from the specific type of
   stabs we find, but we can't do that until later when we read in
   full symbols.  */

void
set_initial_language (void)
...

Since we're already tracking the language of partial symbols, use this to set
the language for the main symbol.

Note that this search in partial symbol tables is not guaranteed to yield the
same result as the lookup_symbol_in_language call currently done in
set_initial_language.

Build and reg-tested on x86_64-linux.

gdb/ChangeLog:

2020-04-02  Tom de Vries  <tdevries@suse.de>

	* dwarf2/read.c (dwarf2_gdb_index_functions,
	dwarf2_debug_names_functions): Init lookup_global_symbol_language with
	NULL.
	* psymtab.c (psym_lookup_global_symbol_language): New function.
	(psym_functions): Init psym_lookup_global_symbol_language with
	psym_lookup_global_symbol_language.
	* symfile-debug.c (debug_sym_quick_functions): Init
	lookup_global_symbol_language with NULL.
	* symfile.c (set_initial_language): Remove fixme comment.
	* symfile.h (struct quick_symbol_functions): Add
	lookup_global_symbol_language.
	* symtab.c (find_quick_global_symbol_language): New function.
	(find_main_name): Use find_quick_global_symbol_language.

gdb/testsuite/ChangeLog:

2020-04-02  Tom de Vries  <tdevries@suse.de>

	* gdb.base/main-psymtab.exp: New file.
 2020-04-02 08:47:49 +02:00
Tom Tromey
be1e3d3eab Introduce objfile::intern 
This introduces a string cache on the per-BFD object, replacing the
macro and filename caches.  Both of these caches just store strings,
so this consolidation by itself saves a little memory (about the size
of a bcache per objfile).

Then this patch switches some allocations on the objfile obstack to
use this bcache instead.  This saves more space; and turns out to be a
bit faster as well.

Here are the before and after "maint time" + "maint space" results of
"file ./gdb":

    Command execution time: 4.664021 (cpu), 4.728518 (wall)
    Space used: 39190528 (+29212672 for this command)

    Command execution time: 4.216209 (cpu), 4.107023 (wall)
    Space used: 36667392 (+26689536 for this command)

The main interface to the string cache is a new pair of overloaded
methods, objfile::intern.

gdb/ChangeLog
2020-03-04  Tom Tromey  <tom@tromey.com>

	* symmisc.c (print_symbol_bcache_statistics)
	(print_objfile_statistics): Update.
	* symfile.c (allocate_symtab): Use intern.
	* psymtab.c (partial_symtab::partial_symtab): Use intern.
	* objfiles.h (struct objfile_per_bfd_storage) <filename_cache,
	macro_cache>: Remove.
	<string_cache>: New member.
	(struct objfile) <intern>: New methods.
	* elfread.c (elf_symtab_read): Use intern.
	* dwarf2/read.c (fixup_go_packaging): Intern package name.
	(dwarf2_compute_name, dwarf2_physname)
	(create_dwo_unit_in_dwp_v1, create_dwo_unit_in_dwp_v2): Intern
	names.
	(guess_partial_die_structure_name): Update.
	(partial_die_info::fixup): Intern name.
	(dwarf2_canonicalize_name): Change parameter to objfile.  Intern
	name.
	(dwarf2_name): Intern name.  Update.
	* buildsym.c (buildsym_compunit::get_macro_table): Use
	string_cache.
 2020-03-04 16:34:49 -07:00
Tom de Vries
658dadf0b0 [gdb] Don't set initial language using previous language 
When language is set to auto, part of loading an executable is to update the
language accordingly.  This is implemented by set_initial_language.

In case of a c++ executable without DW_AT_main_subprogram,
set_initial_language finds "main" in the minimal symbols, and does a lookup of
"main" in the symbol tables to determine the language of the symbol, and uses
that as initial language.

The symbol lookup is done using lookup_symbol which is a wrapper around
lookup_symbol_in_language, using the current language.

So, consider two c++ executables a.out and b.out, which we'll load one after
another.  If we track the resulting lookup_symbol_in_language calls:
...
$ gdb -batch \
    -ex "b lookup_symbol_in_language" \
    -ex r -ex c -ex c \
    --args gdb
...
we find that indeed lookup_symbol_in_language is called once using language_c, and
once using language_c_plus:
...
(gdb) file a.out
Reading symbols from a.out...

Breakpoint 1, lookup_symbol_in_language (name=0x5555568c2050 "main", \
  block=0x0, domain=VAR_DOMAIN, lang=language_c, is_a_field_of_this=0x0) \
  at ../../gdb/symtab.c:1905
1905    {
(gdb) file b.out
Load new symbol table from "b.out"? (y or n) y
Reading symbols from b.out...

Breakpoint 1, lookup_symbol_in_language (name=0x5555568c2030 "main", \
  block=0x0, domain=VAR_DOMAIN, lang=language_cplus, is_a_field_of_this=0x0) \
  at ../../gdb/symtab.c:1905
1905    {
(gdb)
...

It seems like a bad idea to have the previous language play a role
in determining the executable language.

Fix this by using lookup_symbol_in_language in set_initial_language with the
default language c as argument.

Tested on x86_64-linux.

gdb/ChangeLog:

2020-02-28  Tom de Vries  <tdevries@suse.de>

	* symfile.c (set_initial_language): Use default language for lookup.
 2020-02-28 16:14:53 +01:00
Tom de Vries
0dce428051 [gdb] Don't set initial language if set manually 
Initially, gdb sets the language to auto/c:
...
$ gdb -q
(gdb) show language
The current source language is "auto; currently c".
...

And after loading a c++ executable, that changes to auto/c++:
...
(gdb) file a.out
Reading symbols from a.out...
(gdb) show language
The current source language is "auto; currently c++".
...

Now consider setting the language manually to c:
...
$ gdb -q
(gdb) show language
The current source language is "auto; currently c".
(gdb) set language c
(gdb) show language
The current source language is "c".
...
The resulting language is manual/c.

Surprisingly, a subsequent load of the c++ executable:
...
(gdb) file a.out
Reading symbols from a.out...
(gdb) show language
The current source language is "c++".
...
gets us language manual/c++.

Loading the file should get us either:
- auto/c++, or
- manual/c.
That is, either the manual setting should be reset by loading, or the manual
setting should persist.

Fix this in the manual/c fashion. [ Though we could make some gdb setting to
choose one or the other. ]

Build and reg-tested on x86_64-linux.

[ Note: In PR23710 comment 1 a cc1 binary is attached for which gdb is slow when
loading and settting a breakpoint on do_rpo_vn:
...
$ time.sh gdb cc1 -batch -ex "b do_rpo_vn"
Breakpoint 1 at 0xd40e30: do_rpo_vn. (2 locations)
maxmem: 1463496
real: 8.88
user: 8.59
system: 0.35
...

This fix enables a speedup by manually setting the language before
loading, reducing executing time with ~17%, due to not having to load the full
symtab containing main:
...
$ time.sh gdb -iex "set language c++" cc1 -batch -ex "b do_rpo_vn"
Breakpoint 1 at 0xd40e30: do_rpo_vn. (2 locations)
maxmem: 1067308
real: 7.36
user: 7.14
system: 0.28
... ]

gdb/ChangeLog:

2020-02-26  Tom de Vries  <tdevries@suse.de>

	PR gdb/25603
	* symfile.c (set_initial_language): Exit-early if
	language_mode == language_mode_manual.

gdb/testsuite/ChangeLog:

2020-02-26  Tom de Vries  <tdevries@suse.de>

	PR gdb/25603
	* gdb.base/persistent-lang.cc: New test.
	* gdb.base/persistent-lang.exp: New file.
 2020-02-26 14:52:00 +01:00
Simon Marchi
6c2659886f gdb: add back declarations for _initialize functions 
I'd like to enable the -Wmissing-declarations warning.  However, it
warns for every _initialize function, for example:

      CXX    dcache.o
    /home/smarchi/src/binutils-gdb/gdb/dcache.c: In function ‘void _initialize_dcache()’:
    /home/smarchi/src/binutils-gdb/gdb/dcache.c:688:1: error: no previous declaration for ‘void _initialize_dcache()’ [-Werror=missing-declarations]
     _initialize_dcache (void)
     ^~~~~~~~~~~~~~~~~~

The only practical way forward I found is to add back the declarations,
which were removed by this commit:

    commit 481695ed5f
    Author: John Baldwin <jhb@FreeBSD.org>
    Date:   Sat Sep 9 11:02:37 2017 -0700

        Remove unnecessary function prototypes.

I don't think it's a big problem to have the declarations for these
functions, but if anybody has a better solution for this, I'll be happy
to use it.

gdb/ChangeLog:

	* aarch64-fbsd-nat.c (_initialize_aarch64_fbsd_nat): Add declaration.
	* aarch64-fbsd-tdep.c (_initialize_aarch64_fbsd_tdep): Add declaration.
	* aarch64-linux-nat.c (_initialize_aarch64_linux_nat): Add declaration.
	* aarch64-linux-tdep.c (_initialize_aarch64_linux_tdep): Add declaration.
	* aarch64-newlib-tdep.c (_initialize_aarch64_newlib_tdep): Add declaration.
	* aarch64-tdep.c (_initialize_aarch64_tdep): Add declaration.
	* ada-exp.y (_initialize_ada_exp): Add declaration.
	* ada-lang.c (_initialize_ada_language): Add declaration.
	* ada-tasks.c (_initialize_tasks): Add declaration.
	* agent.c (_initialize_agent): Add declaration.
	* aix-thread.c (_initialize_aix_thread): Add declaration.
	* alpha-bsd-nat.c (_initialize_alphabsd_nat): Add declaration.
	* alpha-linux-nat.c (_initialize_alpha_linux_nat): Add declaration.
	* alpha-linux-tdep.c (_initialize_alpha_linux_tdep): Add declaration.
	* alpha-nbsd-tdep.c (_initialize_alphanbsd_tdep): Add declaration.
	* alpha-obsd-tdep.c (_initialize_alphaobsd_tdep): Add declaration.
	* alpha-tdep.c (_initialize_alpha_tdep): Add declaration.
	* amd64-darwin-tdep.c (_initialize_amd64_darwin_tdep): Add declaration.
	* amd64-dicos-tdep.c (_initialize_amd64_dicos_tdep): Add declaration.
	* amd64-fbsd-nat.c (_initialize_amd64fbsd_nat): Add declaration.
	* amd64-fbsd-tdep.c (_initialize_amd64fbsd_tdep): Add declaration.
	* amd64-linux-nat.c (_initialize_amd64_linux_nat): Add declaration.
	* amd64-linux-tdep.c (_initialize_amd64_linux_tdep): Add declaration.
	* amd64-nbsd-nat.c (_initialize_amd64nbsd_nat): Add declaration.
	* amd64-nbsd-tdep.c (_initialize_amd64nbsd_tdep): Add declaration.
	* amd64-obsd-nat.c (_initialize_amd64obsd_nat): Add declaration.
	* amd64-obsd-tdep.c (_initialize_amd64obsd_tdep): Add declaration.
	* amd64-sol2-tdep.c (_initialize_amd64_sol2_tdep): Add declaration.
	* amd64-tdep.c (_initialize_amd64_tdep): Add declaration.
	* amd64-windows-nat.c (_initialize_amd64_windows_nat): Add declaration.
	* amd64-windows-tdep.c (_initialize_amd64_windows_tdep): Add declaration.
	* annotate.c (_initialize_annotate): Add declaration.
	* arc-newlib-tdep.c (_initialize_arc_newlib_tdep): Add declaration.
	* arc-tdep.c (_initialize_arc_tdep): Add declaration.
	* arch-utils.c (_initialize_gdbarch_utils): Add declaration.
	* arm-fbsd-nat.c (_initialize_arm_fbsd_nat): Add declaration.
	* arm-fbsd-tdep.c (_initialize_arm_fbsd_tdep): Add declaration.
	* arm-linux-nat.c (_initialize_arm_linux_nat): Add declaration.
	* arm-linux-tdep.c (_initialize_arm_linux_tdep): Add declaration.
	* arm-nbsd-nat.c (_initialize_arm_netbsd_nat): Add declaration.
	* arm-nbsd-tdep.c (_initialize_arm_netbsd_tdep): Add declaration.
	* arm-obsd-tdep.c (_initialize_armobsd_tdep): Add declaration.
	* arm-pikeos-tdep.c (_initialize_arm_pikeos_tdep): Add declaration.
	* arm-symbian-tdep.c (_initialize_arm_symbian_tdep): Add declaration.
	* arm-tdep.c (_initialize_arm_tdep): Add declaration.
	* arm-wince-tdep.c (_initialize_arm_wince_tdep): Add declaration.
	* auto-load.c (_initialize_auto_load): Add declaration.
	* auxv.c (_initialize_auxv): Add declaration.
	* avr-tdep.c (_initialize_avr_tdep): Add declaration.
	* ax-gdb.c (_initialize_ax_gdb): Add declaration.
	* bfin-linux-tdep.c (_initialize_bfin_linux_tdep): Add declaration.
	* bfin-tdep.c (_initialize_bfin_tdep): Add declaration.
	* break-catch-sig.c (_initialize_break_catch_sig): Add declaration.
	* break-catch-syscall.c (_initialize_break_catch_syscall): Add declaration.
	* break-catch-throw.c (_initialize_break_catch_throw): Add declaration.
	* breakpoint.c (_initialize_breakpoint): Add declaration.
	* bsd-uthread.c (_initialize_bsd_uthread): Add declaration.
	* btrace.c (_initialize_btrace): Add declaration.
	* charset.c (_initialize_charset): Add declaration.
	* cli/cli-cmds.c (_initialize_cli_cmds): Add declaration.
	* cli/cli-dump.c (_initialize_cli_dump): Add declaration.
	* cli/cli-interp.c (_initialize_cli_interp): Add declaration.
	* cli/cli-logging.c (_initialize_cli_logging): Add declaration.
	* cli/cli-script.c (_initialize_cli_script): Add declaration.
	* cli/cli-style.c (_initialize_cli_style): Add declaration.
	* coff-pe-read.c (_initialize_coff_pe_read): Add declaration.
	* coffread.c (_initialize_coffread): Add declaration.
	* compile/compile-cplus-types.c (_initialize_compile_cplus_types): Add declaration.
	* compile/compile.c (_initialize_compile): Add declaration.
	* complaints.c (_initialize_complaints): Add declaration.
	* completer.c (_initialize_completer): Add declaration.
	* copying.c (_initialize_copying): Add declaration.
	* corefile.c (_initialize_core): Add declaration.
	* corelow.c (_initialize_corelow): Add declaration.
	* cp-abi.c (_initialize_cp_abi): Add declaration.
	* cp-namespace.c (_initialize_cp_namespace): Add declaration.
	* cp-support.c (_initialize_cp_support): Add declaration.
	* cp-valprint.c (_initialize_cp_valprint): Add declaration.
	* cris-linux-tdep.c (_initialize_cris_linux_tdep): Add declaration.
	* cris-tdep.c (_initialize_cris_tdep): Add declaration.
	* csky-linux-tdep.c (_initialize_csky_linux_tdep): Add declaration.
	* csky-tdep.c (_initialize_csky_tdep): Add declaration.
	* ctfread.c (_initialize_ctfread): Add declaration.
	* d-lang.c (_initialize_d_language): Add declaration.
	* darwin-nat-info.c (_initialize_darwin_info_commands): Add declaration.
	* darwin-nat.c (_initialize_darwin_nat): Add declaration.
	* dbxread.c (_initialize_dbxread): Add declaration.
	* dcache.c (_initialize_dcache): Add declaration.
	* disasm-selftests.c (_initialize_disasm_selftests): Add declaration.
	* disasm.c (_initialize_disasm): Add declaration.
	* dtrace-probe.c (_initialize_dtrace_probe): Add declaration.
	* dummy-frame.c (_initialize_dummy_frame): Add declaration.
	* dwarf-index-cache.c (_initialize_index_cache): Add declaration.
	* dwarf-index-write.c (_initialize_dwarf_index_write): Add declaration.
	* dwarf2-frame-tailcall.c (_initialize_tailcall_frame): Add declaration.
	* dwarf2-frame.c (_initialize_dwarf2_frame): Add declaration.
	* dwarf2expr.c (_initialize_dwarf2expr): Add declaration.
	* dwarf2loc.c (_initialize_dwarf2loc): Add declaration.
	* dwarf2read.c (_initialize_dwarf2_read): Add declaration.
	* elfread.c (_initialize_elfread): Add declaration.
	* exec.c (_initialize_exec): Add declaration.
	* extension.c (_initialize_extension): Add declaration.
	* f-lang.c (_initialize_f_language): Add declaration.
	* f-valprint.c (_initialize_f_valprint): Add declaration.
	* fbsd-nat.c (_initialize_fbsd_nat): Add declaration.
	* fbsd-tdep.c (_initialize_fbsd_tdep): Add declaration.
	* filesystem.c (_initialize_filesystem): Add declaration.
	* findcmd.c (_initialize_mem_search): Add declaration.
	* findvar.c (_initialize_findvar): Add declaration.
	* fork-child.c (_initialize_fork_child): Add declaration.
	* frame-base.c (_initialize_frame_base): Add declaration.
	* frame-unwind.c (_initialize_frame_unwind): Add declaration.
	* frame.c (_initialize_frame): Add declaration.
	* frv-linux-tdep.c (_initialize_frv_linux_tdep): Add declaration.
	* frv-tdep.c (_initialize_frv_tdep): Add declaration.
	* ft32-tdep.c (_initialize_ft32_tdep): Add declaration.
	* gcore.c (_initialize_gcore): Add declaration.
	* gdb-demangle.c (_initialize_gdb_demangle): Add declaration.
	* gdb_bfd.c (_initialize_gdb_bfd): Add declaration.
	* gdbarch-selftests.c (_initialize_gdbarch_selftests): Add declaration.
	* gdbarch.c (_initialize_gdbarch): Add declaration.
	* gdbtypes.c (_initialize_gdbtypes): Add declaration.
	* gnu-nat.c (_initialize_gnu_nat): Add declaration.
	* gnu-v2-abi.c (_initialize_gnu_v2_abi): Add declaration.
	* gnu-v3-abi.c (_initialize_gnu_v3_abi): Add declaration.
	* go-lang.c (_initialize_go_language): Add declaration.
	* go32-nat.c (_initialize_go32_nat): Add declaration.
	* guile/guile.c (_initialize_guile): Add declaration.
	* h8300-tdep.c (_initialize_h8300_tdep): Add declaration.
	* hppa-linux-nat.c (_initialize_hppa_linux_nat): Add declaration.
	* hppa-linux-tdep.c (_initialize_hppa_linux_tdep): Add declaration.
	* hppa-nbsd-nat.c (_initialize_hppanbsd_nat): Add declaration.
	* hppa-nbsd-tdep.c (_initialize_hppanbsd_tdep): Add declaration.
	* hppa-obsd-nat.c (_initialize_hppaobsd_nat): Add declaration.
	* hppa-obsd-tdep.c (_initialize_hppabsd_tdep): Add declaration.
	* hppa-tdep.c (_initialize_hppa_tdep): Add declaration.
	* i386-bsd-nat.c (_initialize_i386bsd_nat): Add declaration.
	* i386-cygwin-tdep.c (_initialize_i386_cygwin_tdep): Add declaration.
	* i386-darwin-nat.c (_initialize_i386_darwin_nat): Add declaration.
	* i386-darwin-tdep.c (_initialize_i386_darwin_tdep): Add declaration.
	* i386-dicos-tdep.c (_initialize_i386_dicos_tdep): Add declaration.
	* i386-fbsd-nat.c (_initialize_i386fbsd_nat): Add declaration.
	* i386-fbsd-tdep.c (_initialize_i386fbsd_tdep): Add declaration.
	* i386-gnu-nat.c (_initialize_i386gnu_nat): Add declaration.
	* i386-gnu-tdep.c (_initialize_i386gnu_tdep): Add declaration.
	* i386-go32-tdep.c (_initialize_i386_go32_tdep): Add declaration.
	* i386-linux-nat.c (_initialize_i386_linux_nat): Add declaration.
	* i386-linux-tdep.c (_initialize_i386_linux_tdep): Add declaration.
	* i386-nbsd-nat.c (_initialize_i386nbsd_nat): Add declaration.
	* i386-nbsd-tdep.c (_initialize_i386nbsd_tdep): Add declaration.
	* i386-nto-tdep.c (_initialize_i386nto_tdep): Add declaration.
	* i386-obsd-nat.c (_initialize_i386obsd_nat): Add declaration.
	* i386-obsd-tdep.c (_initialize_i386obsd_tdep): Add declaration.
	* i386-sol2-nat.c (_initialize_amd64_sol2_nat): Add declaration.
	* i386-sol2-tdep.c (_initialize_i386_sol2_tdep): Add declaration.
	* i386-tdep.c (_initialize_i386_tdep): Add declaration.
	* i386-windows-nat.c (_initialize_i386_windows_nat): Add declaration.
	* ia64-libunwind-tdep.c (_initialize_libunwind_frame): Add declaration.
	* ia64-linux-nat.c (_initialize_ia64_linux_nat): Add declaration.
	* ia64-linux-tdep.c (_initialize_ia64_linux_tdep): Add declaration.
	* ia64-tdep.c (_initialize_ia64_tdep): Add declaration.
	* ia64-vms-tdep.c (_initialize_ia64_vms_tdep): Add declaration.
	* infcall.c (_initialize_infcall): Add declaration.
	* infcmd.c (_initialize_infcmd): Add declaration.
	* inflow.c (_initialize_inflow): Add declaration.
	* infrun.c (_initialize_infrun): Add declaration.
	* interps.c (_initialize_interpreter): Add declaration.
	* iq2000-tdep.c (_initialize_iq2000_tdep): Add declaration.
	* jit.c (_initialize_jit): Add declaration.
	* language.c (_initialize_language): Add declaration.
	* linux-fork.c (_initialize_linux_fork): Add declaration.
	* linux-nat.c (_initialize_linux_nat): Add declaration.
	* linux-tdep.c (_initialize_linux_tdep): Add declaration.
	* linux-thread-db.c (_initialize_thread_db): Add declaration.
	* lm32-tdep.c (_initialize_lm32_tdep): Add declaration.
	* m2-lang.c (_initialize_m2_language): Add declaration.
	* m32c-tdep.c (_initialize_m32c_tdep): Add declaration.
	* m32r-linux-nat.c (_initialize_m32r_linux_nat): Add declaration.
	* m32r-linux-tdep.c (_initialize_m32r_linux_tdep): Add declaration.
	* m32r-tdep.c (_initialize_m32r_tdep): Add declaration.
	* m68hc11-tdep.c (_initialize_m68hc11_tdep): Add declaration.
	* m68k-bsd-nat.c (_initialize_m68kbsd_nat): Add declaration.
	* m68k-bsd-tdep.c (_initialize_m68kbsd_tdep): Add declaration.
	* m68k-linux-nat.c (_initialize_m68k_linux_nat): Add declaration.
	* m68k-linux-tdep.c (_initialize_m68k_linux_tdep): Add declaration.
	* m68k-tdep.c (_initialize_m68k_tdep): Add declaration.
	* machoread.c (_initialize_machoread): Add declaration.
	* macrocmd.c (_initialize_macrocmd): Add declaration.
	* macroscope.c (_initialize_macroscope): Add declaration.
	* maint-test-options.c (_initialize_maint_test_options): Add declaration.
	* maint-test-settings.c (_initialize_maint_test_settings): Add declaration.
	* maint.c (_initialize_maint_cmds): Add declaration.
	* mdebugread.c (_initialize_mdebugread): Add declaration.
	* memattr.c (_initialize_mem): Add declaration.
	* mep-tdep.c (_initialize_mep_tdep): Add declaration.
	* mi/mi-cmd-env.c (_initialize_mi_cmd_env): Add declaration.
	* mi/mi-cmds.c (_initialize_mi_cmds): Add declaration.
	* mi/mi-interp.c (_initialize_mi_interp): Add declaration.
	* mi/mi-main.c (_initialize_mi_main): Add declaration.
	* microblaze-linux-tdep.c (_initialize_microblaze_linux_tdep): Add declaration.
	* microblaze-tdep.c (_initialize_microblaze_tdep): Add declaration.
	* mips-fbsd-nat.c (_initialize_mips_fbsd_nat): Add declaration.
	* mips-fbsd-tdep.c (_initialize_mips_fbsd_tdep): Add declaration.
	* mips-linux-nat.c (_initialize_mips_linux_nat): Add declaration.
	* mips-linux-tdep.c (_initialize_mips_linux_tdep): Add declaration.
	* mips-nbsd-nat.c (_initialize_mipsnbsd_nat): Add declaration.
	* mips-nbsd-tdep.c (_initialize_mipsnbsd_tdep): Add declaration.
	* mips-sde-tdep.c (_initialize_mips_sde_tdep): Add declaration.
	* mips-tdep.c (_initialize_mips_tdep): Add declaration.
	* mips64-obsd-nat.c (_initialize_mips64obsd_nat): Add declaration.
	* mips64-obsd-tdep.c (_initialize_mips64obsd_tdep): Add declaration.
	* mipsread.c (_initialize_mipsread): Add declaration.
	* mn10300-linux-tdep.c (_initialize_mn10300_linux_tdep): Add declaration.
	* mn10300-tdep.c (_initialize_mn10300_tdep): Add declaration.
	* moxie-tdep.c (_initialize_moxie_tdep): Add declaration.
	* msp430-tdep.c (_initialize_msp430_tdep): Add declaration.
	* nds32-tdep.c (_initialize_nds32_tdep): Add declaration.
	* nios2-linux-tdep.c (_initialize_nios2_linux_tdep): Add declaration.
	* nios2-tdep.c (_initialize_nios2_tdep): Add declaration.
	* nto-procfs.c (_initialize_procfs): Add declaration.
	* objc-lang.c (_initialize_objc_language): Add declaration.
	* observable.c (_initialize_observer): Add declaration.
	* opencl-lang.c (_initialize_opencl_language): Add declaration.
	* or1k-linux-tdep.c (_initialize_or1k_linux_tdep): Add declaration.
	* or1k-tdep.c (_initialize_or1k_tdep): Add declaration.
	* osabi.c (_initialize_gdb_osabi): Add declaration.
	* osdata.c (_initialize_osdata): Add declaration.
	* p-valprint.c (_initialize_pascal_valprint): Add declaration.
	* parse.c (_initialize_parse): Add declaration.
	* ppc-fbsd-nat.c (_initialize_ppcfbsd_nat): Add declaration.
	* ppc-fbsd-tdep.c (_initialize_ppcfbsd_tdep): Add declaration.
	* ppc-linux-nat.c (_initialize_ppc_linux_nat): Add declaration.
	* ppc-linux-tdep.c (_initialize_ppc_linux_tdep): Add declaration.
	* ppc-nbsd-nat.c (_initialize_ppcnbsd_nat): Add declaration.
	* ppc-nbsd-tdep.c (_initialize_ppcnbsd_tdep): Add declaration.
	* ppc-obsd-nat.c (_initialize_ppcobsd_nat): Add declaration.
	* ppc-obsd-tdep.c (_initialize_ppcobsd_tdep): Add declaration.
	* printcmd.c (_initialize_printcmd): Add declaration.
	* probe.c (_initialize_probe): Add declaration.
	* proc-api.c (_initialize_proc_api): Add declaration.
	* proc-events.c (_initialize_proc_events): Add declaration.
	* proc-service.c (_initialize_proc_service): Add declaration.
	* procfs.c (_initialize_procfs): Add declaration.
	* producer.c (_initialize_producer): Add declaration.
	* psymtab.c (_initialize_psymtab): Add declaration.
	* python/python.c (_initialize_python): Add declaration.
	* ravenscar-thread.c (_initialize_ravenscar): Add declaration.
	* record-btrace.c (_initialize_record_btrace): Add declaration.
	* record-full.c (_initialize_record_full): Add declaration.
	* record.c (_initialize_record): Add declaration.
	* regcache-dump.c (_initialize_regcache_dump): Add declaration.
	* regcache.c (_initialize_regcache): Add declaration.
	* reggroups.c (_initialize_reggroup): Add declaration.
	* remote-notif.c (_initialize_notif): Add declaration.
	* remote-sim.c (_initialize_remote_sim): Add declaration.
	* remote.c (_initialize_remote): Add declaration.
	* reverse.c (_initialize_reverse): Add declaration.
	* riscv-fbsd-nat.c (_initialize_riscv_fbsd_nat): Add declaration.
	* riscv-fbsd-tdep.c (_initialize_riscv_fbsd_tdep): Add declaration.
	* riscv-linux-nat.c (_initialize_riscv_linux_nat): Add declaration.
	* riscv-linux-tdep.c (_initialize_riscv_linux_tdep): Add declaration.
	* riscv-tdep.c (_initialize_riscv_tdep): Add declaration.
	* rl78-tdep.c (_initialize_rl78_tdep): Add declaration.
	* rs6000-aix-tdep.c (_initialize_rs6000_aix_tdep): Add declaration.
	* rs6000-lynx178-tdep.c (_initialize_rs6000_lynx178_tdep):
	Add declaration.
	* rs6000-nat.c (_initialize_rs6000_nat): Add declaration.
	* rs6000-tdep.c (_initialize_rs6000_tdep): Add declaration.
	* run-on-main-thread.c (_initialize_run_on_main_thread): Add declaration.
	* rust-exp.y (_initialize_rust_exp): Add declaration.
	* rx-tdep.c (_initialize_rx_tdep): Add declaration.
	* s12z-tdep.c (_initialize_s12z_tdep): Add declaration.
	* s390-linux-nat.c (_initialize_s390_nat): Add declaration.
	* s390-linux-tdep.c (_initialize_s390_linux_tdep): Add declaration.
	* s390-tdep.c (_initialize_s390_tdep): Add declaration.
	* score-tdep.c (_initialize_score_tdep): Add declaration.
	* ser-go32.c (_initialize_ser_dos): Add declaration.
	* ser-mingw.c (_initialize_ser_windows): Add declaration.
	* ser-pipe.c (_initialize_ser_pipe): Add declaration.
	* ser-tcp.c (_initialize_ser_tcp): Add declaration.
	* ser-uds.c (_initialize_ser_socket): Add declaration.
	* ser-unix.c (_initialize_ser_hardwire): Add declaration.
	* serial.c (_initialize_serial): Add declaration.
	* sh-linux-tdep.c (_initialize_sh_linux_tdep): Add declaration.
	* sh-nbsd-nat.c (_initialize_shnbsd_nat): Add declaration.
	* sh-nbsd-tdep.c (_initialize_shnbsd_tdep): Add declaration.
	* sh-tdep.c (_initialize_sh_tdep): Add declaration.
	* skip.c (_initialize_step_skip): Add declaration.
	* sol-thread.c (_initialize_sol_thread): Add declaration.
	* solib-aix.c (_initialize_solib_aix): Add declaration.
	* solib-darwin.c (_initialize_darwin_solib): Add declaration.
	* solib-dsbt.c (_initialize_dsbt_solib): Add declaration.
	* solib-frv.c (_initialize_frv_solib): Add declaration.
	* solib-svr4.c (_initialize_svr4_solib): Add declaration.
	* solib-target.c (_initialize_solib_target): Add declaration.
	* solib.c (_initialize_solib): Add declaration.
	* source-cache.c (_initialize_source_cache): Add declaration.
	* source.c (_initialize_source): Add declaration.
	* sparc-linux-nat.c (_initialize_sparc_linux_nat): Add declaration.
	* sparc-linux-tdep.c (_initialize_sparc_linux_tdep): Add declaration.
	* sparc-nat.c (_initialize_sparc_nat): Add declaration.
	* sparc-nbsd-nat.c (_initialize_sparcnbsd_nat): Add declaration.
	* sparc-nbsd-tdep.c (_initialize_sparcnbsd_tdep): Add declaration.
	* sparc-obsd-tdep.c (_initialize_sparc32obsd_tdep): Add declaration.
	* sparc-sol2-tdep.c (_initialize_sparc_sol2_tdep): Add declaration.
	* sparc-tdep.c (_initialize_sparc_tdep): Add declaration.
	* sparc64-fbsd-nat.c (_initialize_sparc64fbsd_nat): Add declaration.
	* sparc64-fbsd-tdep.c (_initialize_sparc64fbsd_tdep): Add declaration.
	* sparc64-linux-nat.c (_initialize_sparc64_linux_nat): Add declaration.
	* sparc64-linux-tdep.c (_initialize_sparc64_linux_tdep): Add declaration.
	* sparc64-nat.c (_initialize_sparc64_nat): Add declaration.
	* sparc64-nbsd-nat.c (_initialize_sparc64nbsd_nat): Add declaration.
	* sparc64-nbsd-tdep.c (_initialize_sparc64nbsd_tdep): Add declaration.
	* sparc64-obsd-nat.c (_initialize_sparc64obsd_nat): Add declaration.
	* sparc64-obsd-tdep.c (_initialize_sparc64obsd_tdep): Add declaration.
	* sparc64-sol2-tdep.c (_initialize_sparc64_sol2_tdep): Add declaration.
	* sparc64-tdep.c (_initialize_sparc64_adi_tdep): Add declaration.
	* stabsread.c (_initialize_stabsread): Add declaration.
	* stack.c (_initialize_stack): Add declaration.
	* stap-probe.c (_initialize_stap_probe): Add declaration.
	* std-regs.c (_initialize_frame_reg): Add declaration.
	* symfile-debug.c (_initialize_symfile_debug): Add declaration.
	* symfile-mem.c (_initialize_symfile_mem): Add declaration.
	* symfile.c (_initialize_symfile): Add declaration.
	* symmisc.c (_initialize_symmisc): Add declaration.
	* symtab.c (_initialize_symtab): Add declaration.
	* target.c (_initialize_target): Add declaration.
	* target-connection.c (_initialize_target_connection): Add
	declaration.
	* target-dcache.c (_initialize_target_dcache): Add declaration.
	* target-descriptions.c (_initialize_target_descriptions): Add declaration.
	* thread.c (_initialize_thread): Add declaration.
	* tic6x-linux-tdep.c (_initialize_tic6x_linux_tdep): Add declaration.
	* tic6x-tdep.c (_initialize_tic6x_tdep): Add declaration.
	* tilegx-linux-nat.c (_initialize_tile_linux_nat): Add declaration.
	* tilegx-linux-tdep.c (_initialize_tilegx_linux_tdep): Add declaration.
	* tilegx-tdep.c (_initialize_tilegx_tdep): Add declaration.
	* tracectf.c (_initialize_ctf): Add declaration.
	* tracefile-tfile.c (_initialize_tracefile_tfile): Add declaration.
	* tracefile.c (_initialize_tracefile): Add declaration.
	* tracepoint.c (_initialize_tracepoint): Add declaration.
	* tui/tui-hooks.c (_initialize_tui_hooks): Add declaration.
	* tui/tui-interp.c (_initialize_tui_interp): Add declaration.
	* tui/tui-layout.c (_initialize_tui_layout): Add declaration.
	* tui/tui-regs.c (_initialize_tui_regs): Add declaration.
	* tui/tui-stack.c (_initialize_tui_stack): Add declaration.
	* tui/tui-win.c (_initialize_tui_win): Add declaration.
	* tui/tui.c (_initialize_tui): Add declaration.
	* typeprint.c (_initialize_typeprint): Add declaration.
	* ui-style.c (_initialize_ui_style): Add declaration.
	* unittests/array-view-selftests.c (_initialize_array_view_selftests): Add declaration.
	* unittests/child-path-selftests.c (_initialize_child_path_selftests): Add declaration.
	* unittests/cli-utils-selftests.c (_initialize_cli_utils_selftests): Add declaration.
	* unittests/common-utils-selftests.c (_initialize_common_utils_selftests): Add declaration.
	* unittests/copy_bitwise-selftests.c (_initialize_copy_bitwise_utils_selftests): Add declaration.
	* unittests/environ-selftests.c (_initialize_environ_selftests): Add declaration.
	* unittests/filtered_iterator-selftests.c
	(_initialize_filtered_iterator_selftests): Add declaration.
	* unittests/format_pieces-selftests.c (_initialize_format_pieces_selftests): Add declaration.
	* unittests/function-view-selftests.c (_initialize_function_view_selftests): Add declaration.
	* unittests/help-doc-selftests.c (_initialize_help_doc_selftests): Add declaration.
	* unittests/lookup_name_info-selftests.c (_initialize_lookup_name_info_selftests): Add declaration.
	* unittests/main-thread-selftests.c
	(_initialize_main_thread_selftests): Add declaration.
	* unittests/memory-map-selftests.c (_initialize_memory_map_selftests): Add declaration.
	* unittests/memrange-selftests.c (_initialize_memrange_selftests): Add declaration.
	* unittests/mkdir-recursive-selftests.c (_initialize_mkdir_recursive_selftests): Add declaration.
	* unittests/observable-selftests.c (_initialize_observer_selftest): Add declaration.
	* unittests/offset-type-selftests.c (_initialize_offset_type_selftests): Add declaration.
	* unittests/optional-selftests.c (_initialize_optional_selftests): Add declaration.
	* unittests/parse-connection-spec-selftests.c (_initialize_parse_connection_spec_selftests): Add declaration.
	* unittests/rsp-low-selftests.c (_initialize_rsp_low_selftests): Add declaration.
	* unittests/scoped_fd-selftests.c (_initialize_scoped_fd_selftests): Add declaration.
	* unittests/scoped_mmap-selftests.c (_initialize_scoped_mmap_selftests): Add declaration.
	* unittests/scoped_restore-selftests.c (_initialize_scoped_restore_selftests): Add declaration.
	* unittests/string_view-selftests.c (_initialize_string_view_selftests): Add declaration.
	* unittests/style-selftests.c (_initialize_style_selftest): Add declaration.
	* unittests/tracepoint-selftests.c (_initialize_tracepoint_selftests): Add declaration.
	* unittests/tui-selftests.c (_initialize_tui_selftest): Add
	declaration.
	* unittests/unpack-selftests.c (_initialize_unpack_selftests): Add declaration.
	* unittests/utils-selftests.c (_initialize_utils_selftests): Add declaration.
	* unittests/vec-utils-selftests.c (_initialize_vec_utils_selftests): Add declaration.
	* unittests/xml-utils-selftests.c (_initialize_xml_utils): Add declaration.
	* user-regs.c (_initialize_user_regs): Add declaration.
	* utils.c (_initialize_utils): Add declaration.
	* v850-tdep.c (_initialize_v850_tdep): Add declaration.
	* valops.c (_initialize_valops): Add declaration.
	* valprint.c (_initialize_valprint): Add declaration.
	* value.c (_initialize_values): Add declaration.
	* varobj.c (_initialize_varobj): Add declaration.
	* vax-bsd-nat.c (_initialize_vaxbsd_nat): Add declaration.
	* vax-nbsd-tdep.c (_initialize_vaxnbsd_tdep): Add declaration.
	* vax-tdep.c (_initialize_vax_tdep): Add declaration.
	* windows-nat.c (_initialize_windows_nat): Add declaration.
	(_initialize_check_for_gdb_ini): Add declaration.
	(_initialize_loadable): Add declaration.
	* windows-tdep.c (_initialize_windows_tdep): Add declaration.
	* x86-bsd-nat.c (_initialize_x86_bsd_nat): Add declaration.
	* x86-linux-nat.c (_initialize_x86_linux_nat): Add declaration.
	* xcoffread.c (_initialize_xcoffread): Add declaration.
	* xml-support.c (_initialize_xml_support): Add declaration.
	* xstormy16-tdep.c (_initialize_xstormy16_tdep): Add declaration.
	* xtensa-linux-nat.c (_initialize_xtensa_linux_nat): Add declaration.
	* xtensa-linux-tdep.c (_initialize_xtensa_linux_tdep): Add declaration.
	* xtensa-tdep.c (_initialize_xtensa_tdep): Add declaration.

Change-Id: I13eec7e0ed2b3c427377a7bdb055cf46da64def9
 2020-01-13 14:01:38 -05:00