Commit graph

841 commits

Author SHA1 Message Date
Tom Tromey
cf608cc40c C++-ify Ada component interval handling
The Ada component interval handling code, used for aggregate
assignments, does a pre-pass over the sub-expressions so that it can
size an array.  For my expression rewrite, it was handy to C++-ify
this.

gdb/ChangeLog
2020-12-15  Tom Tromey  <tom@tromey.com>

	* ada-lang.c (num_component_specs): Remove.
	(assign_aggregate): Update.
	(aggregate_assign_positional, aggregate_assign_from_choices)
	(aggregate_assign_others, add_component_interval): Change
	arguments.
2020-12-15 17:41:29 -07:00
Tom Tromey
86b442599b Handle block-local names for Ada
GNAT can generate a mangled name with "B_N" (where N is a number) in
the middle, like "hello__B_1__fourth.0".  This is used for names local
to a block.  Multiple levels of block-local name can also occur, a
possibility that was neglected by v1 of this patch.  This patch
changes gdb to handle these names.

The wild name matcher is updated a straightforward way.  The full
matcher is rewritten.  The hash function is updated to ensure that
this works.

This version does not seem to have the performance problems that
affected v1.  In particular, the previously-slow "bt" problem has been
fixed.

gdb/ChangeLog
2020-12-14  Tom Tromey  <tromey@adacore.com>

	* dictionary.c (language_defn::search_name_hash): Ignore "B".
	* ada-lang.c (advance_wild_match): Ignore "B".
	(full_match): Remove.
	(do_full_match): Rewrite.

gdb/testsuite/ChangeLog
2020-12-14  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/nested.exp: Add new tests.
	* gdb.ada/nested/hello.adb (Fourth, Fifth): New procedures.
2020-12-14 08:14:06 -07:00
Tom Tromey
25a1127be7 Use exact match in get_var_value
get_var_value is only used when an exact match is needed.  This
changes this function to ensure this sort of matching is done.

gdb/ChangeLog
2020-12-14  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (get_var_value): Only consider exact matches.
2020-12-14 08:14:06 -07:00
Tom Tromey
b6433ede07 Make bp_location derive from refcounted_object
This changes bp_location to derive from refcounted_object, introduces
a ref_ptr specialization for this type, and then changes
bpstats::bp_location_at to use that specialization.  This removes some
manual reference counting and simplifies the code.

gdb/ChangeLog
2020-12-11  Tom Tromey  <tom@tromey.com>

	* inline-frame.c (stopped_by_user_bp_inline_frame): Update.
	* ada-lang.c (check_status_exception): Update.
	* breakpoint.c (free_bp_location): Remove.
	(decref_bp_location): Use bp_location_ref_policy.
	(bpstats::bpstats): Don't call incref_bp_location.
	(bpstats::~bpstats): Remove.
	(bpstats::bpstats): Update.
	(bpstat_check_watchpoint, bpstat_check_breakpoint_conditions)
	(bp_location::bp_location): Update.
	(incref_bp_location): Remove.
	(bkpt_print_it): Update.
	* breakpoint.h (class bp_location): Derive from
	refcounted_object.
	(struct bpstats): Remove destructor.
	<bp_location_at>: Now a bp_location_ref_ptr.
	<refc>: Remove.
	(bp_location_ref_ptr): New typedef.
	(struct bp_location_ref_policy): New.
2020-12-11 09:21:55 -07:00
Kevin Buettner
2ccee230f8 Fix off-by-one error in ada_fold_name
I'm seeing a libstdc++ assertion failure when running GDB's "maint selftest"
command when GDB is configured with the following CFLAGS and CXXFLAGS as
part of the configure line:

  CFLAGS='-D_GLIBCXX_DEBUG -g3 -O0' CXXFLAGS='-D_GLIBCXX_DEBUG -g3 -O0'

This is what I see when running the self tests:

(gdb) maint selftest
Running selftest aarch64-analyze-prologue.
Running selftest aarch64-process-record.
Running selftest arm-record.
Running selftest arm_analyze_prologue.
Running selftest array_view.
Running selftest child_path.
Running selftest cli_utils.
Running selftest command_structure_invariants.
Running selftest copy_bitwise.
Running selftest copy_integer_to_size.
Running selftest cp_remove_params.
Running selftest cp_symbol_name_matches.
Running selftest dw2_expand_symtabs_matching.
/usr/include/c++/11/string_view:211: constexpr const value_type& std::basic_string_view<_CharT, _Traits>::operator[](std::basic_string_view<_CharT, _Traits>::size_type) const [with _CharT = char; _Traits = std::char_traits<char>; std::basic_string_view<_CharT, _Traits>::const_reference = const char&; std::basic_string_view<_CharT, _Traits>::size_type = long unsigned int]: Assertion '__pos < this->_M_len' failed.
Aborted (core dumped)

Here's a partial stack trace:

  #0  0x00007ffff6ef6262 in raise () from /lib64/libc.so.6
  #1  0x00007ffff6edf8a4 in abort () from /lib64/libc.so.6
  #2  0x00000000004249bf in std::__replacement_assert (
      __file=0xef7480 "/usr/include/c++/11/string_view", __line=211,
      __function=0xef7328 "constexpr const value_type& std::basic_string_view<_CharT, _Traits>::operator[](std::basic_string_view<_CharT, _Traits>::size_type) const [with _CharT = char; _Traits = std::char_traits<char>; std::ba"...,
      __condition=0xef7311 "__pos < this->_M_len")
      at /usr/include/c++/11/x86_64-redhat-linux/bits/c++config.h:2624
  #3  0x0000000000451737 in std::basic_string_view<char, std::char_traits<char> >::operator[] (this=0x7fffffffc200, __pos=8)
      at /usr/include/c++/11/string_view:211
  #4  0x00000000004329f5 in ada_fold_name (name="function")
      at /ironwood1/sourceware-git/rawhide-master/bld/../../worktree-master/gdb/ada-lang.c:988

And, looking at frame #4...

(top-gdb) up 4
    at /ironwood1/sourceware-git/rawhide-master/bld/../../worktree-master/gdb/ada-lang.c:988
988		fold_buffer[i] = tolower (name[i]);
(top-gdb) p i
$1 = 8
(top-gdb) p name.size()
$2 = 8

My patch adjusts the comparison to only copy name.size() characters
from the string.  I've added a separate statement for NUL character
termination of fold_buffer[].

gdb/ChangeLog:

	* ada-lang.c (ada_fold_name): Fix off-by-one error.
2020-12-10 14:21:31 -07:00
Tom Tromey
12932e2ca1 Use add_angle_brackets in ada_lookup_encoded_symbol
Joel recently pointed out add_angle_brackets to me.  This patch
changes one spot in ada-lang.c to use this function rather than doing
it on its own.

gdb/ChangeLog
2020-12-09  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (ada_lookup_encoded_symbol): Use add_angle_brackets.
2020-12-09 14:17:15 -07:00
Simon Marchi
1f8d288117 gdb: make get_discrete_bounds return bool
get_discrete_bounds currently has three possible return values (see its
current doc for details).  It appears that for all callers, it would be
sufficient to have a boolean "worked" / "didn't work" return value.

Change the return type of get_discrete_bounds to bool and adjust all
callers.  Doing so simplifies the following patch.

gdb/ChangeLog:

	* gdbtypes.h (get_discrete_bounds): Return bool, adjust all
	callers.
	* gdbtypes.c (get_discrete_bounds): Return bool.

Change-Id: Ie51feee23c75f0cd7939742604282d745db59172
2020-12-09 13:51:57 -05:00
Simon Marchi
6244c1196a gdb: make discrete_position return optional
Instead of returning a boolean status and returning the value through a
pointer, return an optional that does both jobs.  This helps in the
following patches, and I think it is an improvement in general.

gdb/ChangeLog:

	* ada-lang.c (ada_value_slice_from_ptr): Adjust.
	(ada_value_slice): Adjust.
	(pos_atr): Adjust.
	* gdbtypes.c (get_discrete_bounds): Adjust.
	(discrete_position): Return optional.
	* gdbtypes.h (discrete_position): Return optional.

Change-Id: I758dbd8858b296ee472ed39ec35db1dbd624a5ae
2020-12-09 13:51:45 -05:00
Tom de Vries
f51f9f1d03 [gdb/ada] Handle shrink resize in replace_operator_with_call
In replace_operator_with_call, we resize the elts array like this:
...
  exp->nelts = exp->nelts + 7 - oplen;
  exp->resize (exp->nelts);
...

Although all the current callers ensure that the new size is bigger, it could
also be smaller, in which case the following memmove possibly reads out of
bounds:
...
   memmove (exp->elts + pc + 7, exp->elts + pc + oplen,
           EXP_ELEM_TO_BYTES (save_nelts - pc - oplen));
...

Fix this by doing the resize after the memmove in case the new size is
smaller.

Tested on x86_64-linux.

gdb/ChangeLog:

2020-12-07  Tom de Vries  <tdevries@suse.de>

	* ada-lang.c (replace_operator_with_call): Handle shrink resize.
2020-12-07 09:07:32 +01:00
Tom Tromey
00158a68d1 Fix struct expression regression
The patch to change struct expression to use new introduced a
regression -- there is a spot that reallocates expressions that I
failed to update.

This patch rewrites this code to follow the new approach.  Now the
rewriting is done in place.

gdb/ChangeLog
2020-12-06  Tom Tromey  <tom@tromey.com>

	PR ada/26999
	* ada-lang.c (replace_operator_with_call): Rewrite.
2020-12-06 21:34:25 -07:00
Tom Tromey
88b91969e1 Remove per-language op_name functions
enum exp_opcode is created from all the .def files, but then each
language is required to implement its own op_name function to turn an
enum value to a string.  This seemed over-complicated to me, and this
patch removes the per-language functions in favor of simply using the
.def names for all languages.  Note that op_name is only used for
dumping expressions, which is a maintainer/debug feature.
Furthermore, I don't think there was any case where the .def name and
the string name differed.

gdb/ChangeLog
2020-11-30  Tom Tromey  <tom@tromey.com>

	* rust-lang.c (rust_op_name): Remove.
	(exp_descriptor_rust): Update.
	* parser-defs.h (op_name_standard): Don't declare.
	(struct exp_descriptor) <op_name>: Remove.
	* parse.c (exp_descriptor_standard): Update.
	* opencl-lang.c (exp_descriptor_opencl): Update.
	* m2-lang.c (m2_language::exp_descriptor_modula2): Update.
	* f-lang.c (op_name_f): Remove.
	(f_language::exp_descriptor_tab): Update.
	* expression.h (op_name): Update.
	* expprint.c (op_name): Rewrite.
	(op_name_standard): Remove.
	(dump_raw_expression, dump_subexp): Update.
	* c-lang.c (exp_descriptor_c): Update.
	* ax-gdb.c (gen_expr): Update.
	* ada-lang.c (ada_op_name): Remove.
	(ada_exp_descriptor): Update.
2020-11-30 01:37:10 -07:00
Andrew Burgess
7bea47f001 gdb: rewrite how per language primitive types are managed
Consider the following GDB session:

  $ gdb
  (gdb) set language c
  (gdb) ptype void
  type = void
  (gdb) set language fortran
  (gdb) ptype void
  No symbol table is loaded.  Use the "file" command.
  (gdb)

With no symbol file loaded GDB and the language set to C GDB knows
about the type void, while when the language is set to Fortran GDB
doesn't know about the void, why is that?

In f-lang.c, f_language::language_arch_info, we do have this line:

  lai->primitive_type_vector [f_primitive_type_void]
    = builtin->builtin_void;

where we add the void type to the list of primitive types that GDB
should always know about, so what's going wrong?

It turns out that the primitive types are stored in a C style array,
indexed by an enum, so Fortran uses `enum f_primitive_types'.  The
array is allocated and populated in each languages language_arch_info
member function.  The array is allocated with an extra entry at the
end which is left as a NULL value, and this indicates the end of the
array of types.

Unfortunately for Fortran, a type is not assigned for each element in
the enum.  As a result the final populated array has gaps in it, gaps
which are initialised to NULL, and so every time we iterate over the
list (for Fortran) we stop early, and never reach the void type.

This has been the case since 2007 when this functionality was added to
GDB in commit cad351d11d.

Obviously I could just fix Fortran by ensuring that either the enum is
trimmed, or we create types for the missing types.  However, I think a
better approach would be to move to C++ data structures and removed
the fixed enum indexing into the array approach.

After this commit the primitive types are pushed into a vector, and
GDB just iterates over the vector in the obvious way when it needs to
hunt for a type.  After this commit all the currently defined
primitive types can be found when the language is set to Fortran, for
example:

  $ gdb
  (gdb) set language fortran
  (gdb) ptype void
  type = void
  (gdb)

A new test checks this functionality.

I didn't see any other languages with similar issues, but I could have
missed something.

gdb/ChangeLog:

	* ada-exp.y (find_primitive_type): Make parameter const.
	* ada-lang.c (enum ada_primitive_types): Delete.
	(ada_language::language_arch_info): Update.
	* c-lang.c (enum c_primitive_types): Delete.
	(c_language_arch_info): Update.
	(enum cplus_primitive_types): Delete.
	(cplus_language::language_arch_info): Update.
	* d-lang.c (enum d_primitive_types): Delete.
	(d_language::language_arch_info): Update.
	* f-lang.c (enum f_primitive_types): Delete.
	(f_language::language_arch_info): Update.
	* go-lang.c (enum go_primitive_types): Delete.
	(go_language::language_arch_info): Update.
	* language.c (auto_or_unknown_language::language_arch_info):
	Update.
	(language_gdbarch_post_init): Use obstack_new, use array indexing.
	(language_string_char_type): Add header comment, call function in
	language_arch_info.
	(language_bool_type): Likewise
	(language_arch_info::bool_type): Define.
	(language_lookup_primitive_type_1): Delete.
	(language_lookup_primitive_type): Rewrite as a templated function
	to call function in language_arch_info, then instantiate twice.
	(language_arch_info::type_and_symbol::alloc_type_symbol): Define.
	(language_arch_info::lookup_primitive_type_and_symbol): Define.
	(language_arch_info::lookup_primitive_type): Define twice with
	different signatures.
	(language_arch_info::lookup_primitive_type_as_symbol): Define.
	(language_lookup_primitive_type_as_symbol): Rewrite to call a
	member function in language_arch_info.
	* language.h (language_arch_info): Complete rewrite.
	(language_lookup_primitive_type): Make templated.
	* m2-lang.c (enum m2_primitive_types): Delete.
	(m2_language::language_arch_info): Update.
	* opencl-lang.c (OCL_P_TYPE): Delete.
	(enum opencl_primitive_types): Delete.
	(opencl_type_data): Delete.
	(builtin_opencl_type): Delete.
	(lookup_opencl_vector_type): Update.
	(opencl_language::language_arch_info): Update, lots of content
	moved from...
	(build_opencl_types): ...here.  This function is now deleted.
	(_initialize_opencl_language): Delete.
	* p-lang.c (enum pascal_primitive_types): Delete.
	(pascal_language::language_arch_info): Update.
	* rust-lang.c (enum rust_primitive_types): Delete.
	(rust_language::language_arch_info): Update.

gdb/testsuite/ChangeLog:

	* gdb.fortran/types.exp: Add more tests.
2020-11-12 23:36:25 +00:00
Tom Tromey
7ff5b9370f Use bit stride when taking slice of array
Testing with -fgnat-encodings=minimal showed that the Ada code failed
to use the bit stride of an array when taking a slice.  This patch
fixes the oversight.

gdb/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (ada_value_slice_from_ptr): Use bit size.

gdb/testsuite/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/array_of_variant.exp: New file.
	* gdb.ada/array_of_variant/p.adb: New file.
	* gdb.ada/array_of_variant/pck.ads: New file.
	* gdb.ada/array_of_variant/pck.adb: New file.
2020-11-04 08:49:19 -07:00
Tom Tromey
24aa1b0282 Resolve dynamic type in ada_value_struct_elt
An internal AdaCore test case showed that gdb mishandled a case of
assigning to an array element in a packed array inside a variant
record.  This problem can only be seen with -fgnat-encodings=minimal,
which isn't yet widely used.  This patch fixes the bug, and also
updates an existing test to check this case.

gdb/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (ada_value_struct_elt): Resolve dynamic type.

gdb/testsuite/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/set_pckd_arr_elt.exp: Also test
	-fgnat-encodings=minimal.  Add tests.
	* gdb.ada/set_pckd_arr_elt/foo.adb (Foo): Add VA variable.
	Call Update_Small a second time.
	* gdb.ada/set_pckd_arr_elt/pck.adb (New_Variant): New function.
	* gdb.ada/set_pckd_arr_elt/pck.ads (Buffer, Variant)
	(Variant_Access): New types.
	(New_Variant): Declare.
2020-11-04 08:49:18 -07:00
Tom Tromey
c9a28cbed6 Reject slicing a packed array
In Ada mode, gdb rejects slicing a packed array.  However, with
-fgnat-encodings=minimal, gdb will instead print incorrect results.
This patch changes gdb to also reject slicing a packed array in this
mode.

FWIW I believe that this rejection is a gdb limitation.  Removing it
looked complicated, though, and meanwhile my main goal for the time
being is to bring the DWARF encodings up to par with Gnat encodings.

gdb/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (ada_is_any_packed_array_type): New function.
	(ada_evaluate_subexp) <case TERNOP_SLICE>: Use it.

gdb/testsuite/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/mod_from_name.exp: Test printing slice.
2020-11-04 08:49:17 -07:00
Tom Tromey
575673752c Synthesize array descriptors with -fgnat-encodings=minimal
When -fgnat-encodings=minimal, the compiler will avoid the special
GNAT-specific "encodings" format, and instead emit ordinary DWARF as
much as possible.

When emitting DWARF for thick pointers to arrays, the compiler emits
something like:

   <1><11db>: Abbrev Number: 7 (DW_TAG_array_type)
      <11dc>   DW_AT_name        : (indirect string, offset: 0x1bb8): string
      <11e0>   DW_AT_data_location: 2 byte block: 97 6
	  (DW_OP_push_object_address; DW_OP_deref)
      <11e3>   DW_AT_type        : <0x1173>
      <11e7>   DW_AT_sibling     : <0x1201>
   <2><11eb>: Abbrev Number: 8 (DW_TAG_subrange_type)
      <11ec>   DW_AT_type        : <0x1206>
      <11f0>   DW_AT_lower_bound : 6 byte block: 97 23 8 6 94 4
	  (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref;
	   DW_OP_deref_size: 4)
      <11f7>   DW_AT_upper_bound : 8 byte block: 97 23 8 6 23 4 94 4
	  (DW_OP_push_object_address; DW_OP_plus_uconst: 8; DW_OP_deref;
	   DW_OP_plus_uconst: 4; DW_OP_deref_size: 4)

If you read between the lines, the "array" is actually a structure
with two elements.  One element is a pointer to the array data, and
the other structure describes the bounds of the array.  However, the
compiler doesn't emit this explicitly, but instead hides it behind
these location expressions.

gdb can print such objects, but currently there is no way to construct
one.  So, this patch adds some code to the DWARF reader to recognize
this construct, and then synthesize an array descriptor.  This
descriptor is then handled by the existing Ada code.

Internally, we've modified GCC to emit the structure type explicitly
(we will of course be sending this upstream).  In this case, the array
still has the DW_AT_data_location, though.  This patch also modifies
gdb to ignore the data location in this case -- this is preferred
because the location only serves to confuse the Ada code that already
knows where to find the data.  In the future I hope to move some of
this handling to the gdb core, so that Ada-specific hacks are not
needed; however I have not yet done this.

Because parallel types are not emitted with -fgnat-encodings=minimal,
some changes to the Ada code were also required.

The change ina ada-valprint.c was needed to avoid infinite recursion
when trying to print a constrained packed array.  And, there didn't
seem to be any need for a recursive call here -- the value could
simply be returned instead.

Finally, gdb.ada/frame_arg_lang.exp no longer works in C mode, because
we drop back to the structure approach now.  As mentioned earlier,
future work should probably fix this again; meanwhile, this doesn't
seem to be a big problem, because it is what is currently done (users
as a rule don't use -fgnat-encodings=minimal -- which is what I am
ultimately trying to fix).

Note that a couple of tests have an added KFAIL.  Some
-fgnat-encodings=minimal changes have landed in GNAT, and you need
something very recent to pass all the tests.  I'm using git gcc to
accomplish this.

gdb/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* dwarf2/read.c (recognize_bound_expression)
	(quirk_ada_thick_pointer): New functions.
	(read_array_type): Call quirk_ada_thick_pointer.
	(set_die_type): Add "skip_data_location" parameter.
	(quirk_ada_thick_pointer): New function.
	(process_structure_scope): Call quirk_ada_thick_pointer.
	* ada-lang.c (ada_is_unconstrained_packed_array_type)
	(decode_packed_array_bitsize): Handle thick pointers without
	parallel types.
	(ada_is_gnat_encoded_packed_array_type): Rename from
	ada_is_packed_array_type.
	(ada_is_constrained_packed_array_type): Update.
	* ada-valprint.c (ada_val_print_gnat_array): Remove.
	(ada_value_print_1): Use ada_get_decoded_value.

gdb/testsuite/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/O2_float_param.exp: Test different -fgnat-encodings
	values.
	* gdb.ada/access_to_unbounded_array.exp: Test different
	-fgnat-encodings values.
	* gdb.ada/big_packed_array.exp: Test different -fgnat-encodings
	values.
	* gdb.ada/arr_enum_idx_w_gap.exp: Test different -fgnat-encodings
	values.
	* gdb.ada/array_ptr_renaming.exp: Test different -fgnat-encodings
	values.
	* gdb.ada/array_of_variable_length.exp: Test different
	-fgnat-encodings values.
	* gdb.ada/arrayparam.exp: Test different -fgnat-encodings values.
	* gdb.ada/arrayptr.exp: Test different -fgnat-encodings values.
	* gdb.ada/frame_arg_lang.exp: Revert -fgnat-encodings=minimal
	change.
	* gdb.ada/mi_string_access.exp: Test different -fgnat-encodings
	values.
	* gdb.ada/mod_from_name.exp: Test different -fgnat-encodings values.
	* gdb.ada/out_of_line_in_inlined.exp: Test different
	-fgnat-encodings values.
	* gdb.ada/packed_array.exp: Test different -fgnat-encodings
	values.
	* gdb.ada/pckd_arr_ren.exp: Test different -fgnat-encodings
	values.
	* gdb.ada/unc_arr_ptr_in_var_rec.exp: Test different
	-fgnat-encodings values.
	* gdb.ada/variant_record_packed_array.exp: Test different
	-fgnat-encodings values.
2020-11-04 08:49:17 -07:00
Tom Tromey
a7400e443c Fix decoding of multi-dimensional constrained packed arrays
Printing a multi-dimensional constrained packed array in Ada would not
show the correct values.  The bug here is that, when decoding the type
of such an array, only the innermost dimension's element bitsize would
be correct.  For outer dimensions, the bitsize must account for the
size of each sub-array, but this was not done.

This patch fixes the problem by arranging to compute these sizes after
decoding the array type.  I've included a bit more test case than is
strictly necessary -- the current test here was derived from an
internal test, and this patch brings the two into sync.

gdb/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (recursively_update_array_bitsize): New function.
	(decode_constrained_packed_array_type): Call it.

gdb/testsuite/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* gdb.ada/enum_idx_packed.exp: Add tests.
	* gdb.ada/enum_idx_packed/foo.adb: Add variables.
	* gdb.ada/enum_idx_packed/pck.adb: Add functions.
	* gdb.ada/enum_idx_packed/pck.ads: Add types, function
	declarations.
2020-11-04 08:49:17 -07:00
Tom Tromey
75fd6a26f8 Avoid crash in ada-lang.c:to_fixed_array_type
When debugging Ada programs compiled by certain versions of GNAT with
-fgnat-encodings=minimal, gdb can crash.  These crashes occur when
running the gdb test suite, once some of the later patches in this
series have been applied.

This patch works around the bug by throwing an exception in the
failing case.  I did not implement a full fix because GNAT has been
changed to emit better DWARF, and so in the near future this will stop
being a problem.  (Currently, users don't generally use
-fgnat-encodings=minimal, and the GNAT default will only be changed in
a fully-patched compiler.)

gdb/ChangeLog
2020-11-04  Tom Tromey  <tromey@adacore.com>

	* ada-lang.c (to_fixed_array_type): Error if
	decode_constrained_packed_array_type returns NULL.
2020-11-04 08:49:16 -07:00
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
Joel Brobecker
60bd1d53a0 ada-lang.c: Rename gnat_encoded_fixed_type_info
This commit renames gnat_encoded_fixed_type_info into
gnat_encoded_fixed_point_type_info, so as to be more consistent
with the naming used for the other associated routines (i.e.
use "fixed_point" rather than just "fixed").

gdb/ChangeLog:

        * ada-lang.c (gnat_encoded_fixed_point_type_info): Renames
        gnat_encoded_fixed_type_info.  Update all callers.
2020-11-01 03:46:10 -05:00
Joel Brobecker
db99d0d055 ada-lang.c: fix line too long in cast_from_gnat_encoded_fixed_point_type
One of the lines got too long after a renaming done in a previous
commit. This fixes that.

gdb/ChangeLog:

        * ada-lang.c (cast_from_gnat_encoded_fixed_point_type): Split
        line too long.
2020-11-01 03:46:05 -05:00
Joel Brobecker
75f24e86ba ada-lang.c: Renaming some fixed-point-related routines
This patch renames some of the fixed-point-related subprograms in ada-lang.c
so as to make it obvious that those routines only handle the case where
the types are encoded using the GNAT encoding.

No function change; this patch is preparation work for adding support
for fixed-point types purely based on standard DWARF debug info.

gdb/ChangeLog:

        * ada-lang.c (cast_from_gnat_encoded_fixed_point_type): Renames
        cast_from_fixed.  Update all callers.
        (cast_to_gnat_encoded_fixed_point_type): Renames cast_to_fixed.
        Update all callers.
        (gnat_encoded_fixed_point_scaling_factor): Renames ada_scaling_factor.
        Update all callers.
        * ada-lang.h (gnat_encoded_fixed_point_scaling_factor): Renames
        ada_scaling_factor.
        * ada-typeprint.c: Replace call to ada_scaling_factor by call
        to print_gnat_encoded_fixed_point_type.
        * ada-valprint.c: Likewise.
2020-11-01 02:29:27 -05:00
Tankut Baris Aktemur
733d554a46 gdb/breakpoint: add flags to 'condition' and 'break' commands to force condition
The previous patch made it possible to define a condition if it's
valid at some locations.  If the condition is invalid at all of the
locations, it's rejected.  However, there may be cases where the user
knows the condition *will* be valid at a location in the future,
e.g. due to a shared library load.

To make it possible that such condition can be defined, this patch
adds an optional '-force' flag to the 'condition' command, and,
respectively, a '-force-condition' flag to the 'break'command.  When
the force flag is passed, the condition is not rejected even when it
is invalid for all the current locations (note that all the locations
would be internally disabled in this case).

For instance:

  (gdb) break test.c:5
  Breakpoint 1 at 0x1155: file test.c, line 5.
  (gdb) cond 1 foo == 42
  No symbol "foo" in current context.

Defining the condition was not possible because 'foo' is not
available.  The user can override this behavior with the '-force'
flag:

  (gdb) cond -force 1 foo == 42
  warning: failed to validate condition at location 1.1, disabling:
    No symbol "foo" in current context.
  (gdb) info breakpoints
  Num     Type           Disp Enb Address            What
  1       breakpoint     keep y   <MULTIPLE>
          stop only if foo == 42
  1.1                         N   0x0000000000001155 in main at test.c:5

Now the condition is accepted, but the location is automatically
disabled.  If a future location has a context in which 'foo' is
available, that location would be enabled.

For the 'break' command, -force-condition has the same result:

  (gdb) break test.c:5 -force-condition if foo == 42
  warning: failed to validate condition at location 0x1169, disabling:
    No symbol "foo" in current context.
  Breakpoint 1 at 0x1169: file test.c, line 5.

gdb/ChangeLog:
2020-10-27  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* breakpoint.h (set_breakpoint_condition): Add a new bool parameter.
	* breakpoint.c: Update the help text of the 'condition' and 'break'
	commands.
	(set_breakpoint_condition): Take a new bool parameter
	to control whether condition definition should be forced even when
	the condition expression is invalid in all of the current locations.
	(condition_command): Update the call to 'set_breakpoint_condition'.
	(find_condition_and_thread): Take the "-force-condition" flag into
	account.
        * linespec.c (linespec_keywords): Add "-force-condition" as an
	element.
        (FORCE_KEYWORD_INDEX): New #define.
        (linespec_lexer_lex_keyword): Update to consider "-force-condition"
	as a keyword.
	* ada-lang.c (create_ada_exception_catchpoint): Ditto.
	* guile/scm-breakpoint.c (gdbscm_set_breakpoint_condition_x): Ditto.
	* python/py-breakpoint.c (bppy_set_condition): Ditto.
	* NEWS: Mention the changes to the 'break' and 'condition' commands.

gdb/testsuite/ChangeLog:
2020-10-27  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* gdb.base/condbreak-multi-context.exp: Expand to test forcing
	the condition.
	* gdb.linespec/cpcompletion.exp: Update to consider the
	'-force-condition' keyword.
	* gdb.linespec/explicit.exp: Ditto.
	* lib/completion-support.exp: Ditto.

gdb/doc/ChangeLog:
2020-10-27  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* gdb.texinfo (Set Breaks): Document the '-force-condition' flag
	of the 'break'command.
	* gdb.texinfo (Conditions): Document the '-force' flag of the
	'condition' command.
2020-10-27 11:00:57 +01:00
Andrew Burgess
5399db93c5 gdb: Rename language_defn::demangle
GDB already has a global symbol `demangle` (a boolean), having a
language method called `demangle` is not a good idea as we often want
to reference `demangle` the control variable inside `demangle` the
member function.

This commit renames `demangle` the member function to
`demangle_symbol`.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language::demangle): Rename to...
	(ada_language::demangle_symbol): ...this.
	* c-lang.c (cplus_language::demangle): Rename to...
	(cplus_language::demangle_symbol): ...this.
	* d-lang.c (d_language::demangle): Rename to...
	(d_language::demangle_symbol): ...this.
	* f-lang.c (f_language::demangle): Rename to...
	(f_language::demangle_symbol): ...this.
	* go-lang.c (go_language::demangle): Rename to...
	(go_language::demangle_symbol): ...this.
	* language.c (language_demangle): Update call to demangle_symbol.
	(auto_or_unknown_language::demangle): Rename to...
	(auto_or_unknown_language::demangle_symbol): ...this.
	* language.h (language_defn::demangle): Rename to...
	(language_defn::demangle_symbol): ...this.
	* objc-lang.c (objc_language::demangle): Rename to...
	(objc_language::demangle_symbol): ...this.
	* rust-lang.c (rust_language::demangle): Rename to...
	(rust_language::demangle_symbol): ...this.
2020-10-23 10:57:14 +01:00
Andrew Burgess
00c696a6e2 gdb: remove LA_VALUE_PRINT macro
Remove the LA_VALUE_PRINT macro, and replace its uses with direct
calls to the value_print member function on an appropriate language.

In the global 'value_print' function, we call the value_print method
on the current_language, this is a direct inline replacement of the
old LA_VALUE_PRINT macro.

However, in ada-lang.c, and language.c the macro was being used
within the print_array_index member function of a language class.  In
these cases we now call the value_print member function of the current
language class.

In theory, when we are inside (for example) the
ada_language::print_array_index function the current_language should
always be set to Ada, so this change should have no effect.  However,
if we ever could get into ada_language::print_array_index with the
current language set to something else (which I think would have been
a bug) then we would now see a change in behaviour.  I couldn't find
any cases where this happened though.

There should be no user visible changes after this commit, but it is
not impossible in some edge cases.

gdb/ChangeLog:

	* ada-lang.c (ada_language::print_array_index): Call value_print
	directly.
	* language.c (language_defn::print_array_index): Likewise.
	* language.h (LA_VALUE_PRINT): Delete.
	* valprint.c (value_print): Call value_print on the
	current_language directly.
2020-10-23 10:57:14 +01:00
Joel Brobecker
59c8a30b81 ada-lang.c::advance_wild_match improve doc and parameter+temporaries types
This commit fixes the type of one of the parameters as well as a couple
of temporaries.

While at it, the function's description is slightly rewritten to make it
a little clearer what the function does.

gdb/ChangeLog:

        * ada-lang.c (advance_wild_match): Rewrite the function's
        description.  Change the type of target0, t0 and t1 to char.
2020-10-09 13:31:07 -07:00
Tom Tromey
5c4258f4c0 Return std::string from ada_encode
This changes ada_encode to return a std::string.  This simplifies it
somewhat, removes a use of GROW_VECT, and is also simpler for callers
to use.

gdb/ChangeLog
2020-10-09  Tom Tromey  <tromey@adacore.com>

	* ada-lang.h (ada_encode): Return std::string.
	* ada-lang.c (ada_encode_1): Return std::string.
	(ada_encode): Likewise.
	(type_from_tag, ada_lookup_name_info::ada_lookup_name_info):
	Update.
	* ada-exp.y (block_lookup, write_var_or_type): Update.
2020-10-09 08:27:30 -06:00
Andrew Burgess
0e25e76727 gdb: Remove language_data struct
The language_data type, from which language_defn inherits, is now
empty, and this commit removes it.

Each language is updated to no longer create and use a language_data
struct.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Delete.
	(ada_language): Remove references to ada_language_data.
	* c-lang.c (c_language_data): Delete.
	(c_language): Remove references to c_language_data.
	(cplus_language_data): Delete.
	(cplus_language): Remove references to cplus_language_data.
	(asm_language_data): Delete.
	(asm_language): Remove references to asm_language_data.
	(minimal_language_data): Delete.
	(minimal_language): Remove references to minimal_language_data.
	* d-lang.c (d_language_data): Delete.
	(d_language): Remove references to d_language_data.
	* f-lang.c (f_language_data): Delete.
	(f_language): Remove references to f_language_data.
	* go-lang.c (go_language_data): Delete.
	(go_language): Remove references to go_language_data.
	* language.c (unknown_language_data): Delete.
	(unknown_language): Remove references to unknown_language_data.
	(auto_language_data): Delete.
	(auto_language): Remove references to auto_language_data.
	* language.h (language_data): Delete struct.
	(language_defn): No longer inherit from language_data.
	* m2-lang.c (m2_language_data): Delete.
	(m2_language): Remove references to m2_language_data.
	* objc-lang.c (objc_language_data): Delete.
	(objc_language): Remove references to objc_language_data.
	* opencl-lang.c (opencl_language_data): Delete.
	(opencl_language): Remove references to opencl_language_data.
	* p-lang.c (pascal_language_data): Delete.
	(pascal_language): Remove references to pascal_language_data.
	* rust-lang.c (rust_language_data): Delete.
	(rust_language): Remove references to rust_language_data.
2020-09-16 11:04:04 +01:00
Andrew Burgess
b7c6e27dbb gdb: Convert language_data::la_op_print_tab to a method
Convert language_data::la_op_print_tab member variable to a virtual
method language_defn::opcode_print_table.  I changed the name in order
to make it clearer (I hope) what the method does.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_op_print_tab
	initializer.
	(ada_language::opcode_print_table): New member function.
	* c-lang.c (c_language_data): Remove la_op_print_tab initializer.
	(c_language::opcode_print_table): New member function.
	(cplus_language_data): Remove la_op_print_tab initializer.
	(cplus_language::opcode_print_table): New member function.
	(asm_language_data): Remove la_op_print_tab initializer.
	(asm_language::opcode_print_table): New member function.
	(minimal_language_data): Remove la_op_print_tab initializer.
	(minimal_language::opcode_print_table): New member function.
	* d-lang.c (d_language_data): Remove la_op_print_tab initializer.
	(d_language::opcode_print_table): New member function.
	* expprint.c (print_subexp_standard): Update call to
	opcode_print_table.
	(op_string): Likewise.
	* f-lang.c (f_language_data): Remove la_op_print_tab initializer.
	(f_language::opcode_print_table): New member function.
	* go-lang.c (go_language_data): Remove la_op_print_tab
	initializer.
	(go_language::opcode_print_table): New member function.
	* language.c (unknown_language_data): Remove la_op_print_tab
	initializer.
	(unknown_language::opcode_print_table): New member function.
	(auto_language_data): Remove la_op_print_tab initializer.
	(auto_language::opcode_print_table): New member function.
	* language.h (language_data): Remove la_op_print_tab field.
	(language_defn::opcode_print_table): Declare new member function.
	* m2-lang.c (m2_language_data): Remove la_op_print_tab
	initializer.
	(m2_language::opcode_print_table): New member function.
	* objc-lang.c (objc_language_data): Remove la_op_print_tab
	initializer.
	(objc_language::opcode_print_table): New member function.
	* opencl-lang.c (opencl_language_data): Remove la_op_print_tab
	initializer.
	(opencl_language::opcode_print_table): New member function.
	* p-lang.c (pascal_language_data): Remove la_op_print_tab
	initializer.
	(pascal_language::opcode_print_table): New member function.
	* rust-lang.c (rust_language_data): Remove la_op_print_tab
	initializer.
	(rust_language::opcode_print_table): New member function.
2020-09-16 11:04:04 +01:00
Andrew Burgess
5aba6ebefb gdb: Convert language_data::la_exp_desc to a method
Convert language_data::la_exp_desc member variable to a virtual
method language_defn::expression_ops.  The change of names brings this
method more into line with the existing varobj_ops method, that also
returns a table of function pointers.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_exp_desc initializer.
	(ada_language::expression_ops): New member function.
	* c-lang.c (c_language_data): Remove la_exp_desc initializer.
	(c_language::expression_ops): New member function.
	(cplus_language_data): Remove la_exp_desc initializer.
	(cplus_language::expression_ops): New member function.
	(asm_language_data): Remove la_exp_desc initializer.
	(asm_language::expression_ops): New member function.
	(minimal_language_data): Remove la_exp_desc initializer.
	(minimal_language::expression_ops): New member function.
	* d-lang.c (d_language_data): Remove la_exp_desc initializer.
	(d_language::expression_ops): New member function.
	* eval.c (evaluate_subexp): Update call to expression_ops.
	* expprint.c (print_subexp): Likewise.
	(op_name): Likewise.
	(dump_subexp_body): Likewise.
	* f-lang.c (f_language_data): Remove la_exp_desc initializer.
	(f_language::expression_ops): New member function.
	* go-lang.c (go_language_data): Remove la_exp_desc initializer.
	(go_language::expression_ops): New member function.
	* language.c (language_defn::expression_ops): New function.
	(unknown_language_data): Remove la_exp_desc initializer.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove la_exp_desc field.
	(language_defn::expression_ops): Declare new member function.
	* m2-lang.c (m2_language_data): Remove la_exp_desc initializer.
	(m2_language::expression_ops): New member function.
	* objc-lang.c (objc_language_data): Remove la_exp_desc
	initializer.
	* opencl-lang.c (opencl_language_data): Remove la_exp_desc
	initializer.
	(opencl_language::expression_ops): New member function.
	* p-lang.c (pascal_language_data): Remove la_exp_desc initializer.
	* parse.c (operator_length): Update call to expression_ops.
	(exp_iterate): Likewise.
	* rust-lang.c (rust_language_data): Remove la_exp_desc
	initializer.
	(ruse_language::expression_ops): New member function.
2020-09-16 11:04:04 +01:00
Andrew Burgess
b63a3f3fc4 gdb: Convert language_data::la_varobj_ops to a method
Convert language_data::la_varobj_ops member variable to a virtual
method language_defn::varobj_ops.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_varobj_ops
	initializer.
	(ada_language::varobj_ops): New member function.
	* c-lang.c (c_language_data): Remove la_varobj_ops
	initializer.
	(cplus_language_data): Likewise.
	(cplus_language::varobj_ops): New member function.
	(asm_language_data): Remove la_varobj_ops initializer.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	* f-lang.c (f_language_data): Likewise.
	* go-lang.c (go_language_data): Likewise.
	* language.c (language_defn::varobj_ops): New function.
	(unknown_language_data): Remove la_varobj_ops
	initializer.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove la_varobj_ops field.
	(language_defn::varobj_ops): Declare new member function.
	* m2-lang.c (m2_language_data): Remove la_varobj_ops initializer.
	* objc-lang.c (objc_language_data): Likewise.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
	* varobj.c (varobj_create): Update call to varobj_ops.
	* varobj.h (default_varobj_ops): Delete define.
2020-09-16 11:04:03 +01:00
Andrew Burgess
1ac14a0402 gdb: Convert language_data::la_macro_expansion to a method
Convert language_data::la_macro_expansion member variable to a virtual
method language_defn::macro_expansion.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_macro_expansion
	initializer.
	* c-lang.c (c_language_data): Likewise.
	(c_language::macro_expansion): New member function.
	(cplus_language_data): Likewise.
	(cplus_language::macro_expansion): New member function.
	(asm_language_data): Likewise.
	(asm_language::macro_expansion): New member function.
	(minimal_language_data): Likewise.
	(minimal_language::macro_expansion): New member function.
	* d-lang.c (d_language_data): Remove la_macro_expansion
	initializer.
	* f-lang.c (f_language_data): Likewise.
	* go-lang.c (go_language_data): Likewise.
	* language.c (unknown_language_data): Likewise.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove la_macro_expansion field.
	(language_defn::macro_expansion): New member function.
	* m2-lang.c (m2_language_data): Remove la_macro_expansion
	initializer.
	* objc-lang.c (objc_language_data): Likewise.
	(objc_language::macro_expansion): New member function.
	* opencl-lang.c (opencl_language_data): Likewise.
	(opencl_language::macro_expansion): New member function.
	* p-lang.c (pascal_language_data): Remove la_macro_expansion
	initializer.
	* rust-lang.c (rust_language_data): Likewise.
	* symtab.c (default_collect_symbol_completion_matches_break_on):
	Update call to macro_expansion.
2020-09-16 11:04:03 +01:00
Andrew Burgess
3a3440fb8b gdb: Convert language_data::la_array_ordering to a method
Convert language_data::la_array_ordering member variable to a virtual
method language_defn::array_ordering.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_array_ordering
	initializer.
	* c-lang.c (c_language_data): Likewise.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	* dwarf2/read.c (read_array_order): Update for call to
	array_ordering.
	* f-lang.c (f_language_data): Remove la_array_ordering
	initializer.
	(f_language::array_ordering): New member function.
	* go-lang.c (go_language_data): Remove la_array_ordering
	initializer.
	* language.c (unknown_language_data): Likewise.
	(auto_language_data): Likewise.
	* language.h (language_data): Delete la_array_ordering field.
	(language_defn::array_ordering): New member function.
	* m2-lang.c (m2_language_data): Remove la_array_ordering
	initializer.
	* objc-lang.c (objc_language_data): Likewise.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
2020-09-16 11:04:03 +01:00
Andrew Burgess
0d201fa460 gdb: Convert language_data::la_case_sensitivity to a method
Convert language_data::la_case_sensitivity member variable to a virtual
method language_defn::case_sensitivity.

This is mostly straight forward.  The only slight problem is that I
ended up deleting this comment from ada-lang.c:

  /* Yes, Ada is case-insensitive, but that's not quite what this
     means.  */

However, as the comment (which has existed since Ada support was first
added to GDB) doesn't explain _why_ Ada sets case sensitivity to on
despite being a generally case insensitive language, this doesn't
really help me much.

If I understood _why_ the setting doesn't quite mean what it seems to
mean (at least as far as Ada is concerned) then I would extend the
comment on language_defn::case_sensitivity (in language.h) to include
the detail, and note how this impacts Ada.  But as it stands I've just
deleted the comment for now.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_case_sensitivity
	initializer.
	* c-lang.c (c_language_data): Likewise.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	* f-lang.c (f_language_data): Likewise.
	(f_language::case_sensitivity): New member function.
	* go-lang.c (go_language_data): Remove la_case_sensitivity
	initializer.
	* language.c (enum case_mode): Moved here from language.h.
	(case_mode): Make static.
	(show_case_command): Update for case_sensitivity being a method.
	(set_case_command): Likewise.
	(set_range_case): Likewise.
	(unknown_language_data): Remove la_case_sensitivity initializer.
	(auto_language_data): Likewise.
	* language.h (case_mode): Delete, move enum declaration to
	language.c.
	(language_data): Delete la_case_sensitivity field.
	(language_defn::case_sensitivity): New member function.
	* m2-lang.c (m2_language_data): Remove la_case_sensitivity
	initializer.
	* objc-lang.c (objc_language_data): Likewise.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
2020-09-16 11:04:03 +01:00
Andrew Burgess
efdf6a733d gdb: Convert language_data::la_range_check to a method
Convert language_data::la_range_check member variable to a virtual
method language_defn::range_checking_on_by_default.

Where the previous member variable was of type 'enum range_check', the
new member function returns a boolean that selects between range
checking being on or off.  This removes the possibility of a language
having its default be the third enum state, range_check_warn, which
no language currently used.

This all makes sense I think, the language's true/false provides the
default when the global 'set check range' is set to 'auto'.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_range_check
	initializer.
	* c-lang.c (c_language_data): Likewise.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	* f-lang.c (f_language_data): Likewise.
	(f_language::range_checking_on_by_default): New member function.
	* go-lang.c (go_language_data): Remove la_range_check initializer.
	* language.c (enum range_mode): Moved here from language.h.
	(range_mode): Made static.
	(show_range_command): Update to use
	range_checking_on_by_default.
	(set_range_command): Likewise.
	(set_range_case): Likewise.
	(unknown_language_data): Remove la_range_check initializer.
	(auto_language_data): Likewise.
	* language.h (range_mode): Delete.  Enum definition moved to
	language.c.
	(language_data): Remove la_range_check field.
	(language_defn::range_checking_on_by_default): New member
	function.
	* m2-lang.c (m2_language_data): Remove la_range_check initializer.
	(m2_language::range_checking_on_by_default): New member function.
	* objc-lang.c (objc_language_data): Remove la_range_check
	initializer.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	(pascal_language::range_checking_on_by_default): New member
	function.
	* rust-lang.c (rust_language_data): Remove la_range_check
	initializer.
	(rust_language::range_checking_on_by_default): New member
	function.
2020-09-16 11:01:24 +01:00
Andrew Burgess
d3355e4dec gdb: Convert la_store_sym_names_in_linkage_form_p to a method
Convert language_data::la_store_sym_names_in_linkage_form_p member
variable to language_defn::store_sym_names_in_linkage_form_p virtual
function.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	(ada_language::store_sym_names_in_linkage_form_p): New member
	function.
	* c-lang.c (c_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	(c_language::store_sym_names_in_linkage_form_p): New member
	function.
	(cplus_language_data): Remove la_store_sym_names_in_linkage_form_p
	initializer.
	(asm_language_data): Likewise.
	(asm_language::store_sym_names_in_linkage_form_p): New member
	function.
	(minimal_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	(minimal_language::store_sym_names_in_linkage_form_p): New member
	function.
	* d-lang.c (d_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	* dwarf2/read.c (dwarf2_physname): Update call to
	store_sym_names_in_linkage_form_p.
	* f-lang.c (f_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	* go-lang.c (go_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	* language.c (unknown_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	(unknown_language::store_sym_names_in_linkage_form_p): New member
	function.
	(auto_language_data): Remove la_store_sym_names_in_linkage_form_p
	initializer.
	(auto_language::store_sym_names_in_linkage_form_p): New member
	function.
	* language.h (language_data): Remove
	la_store_sym_names_in_linkage_form_p member variable.
	(language_defn::store_sym_names_in_linkage_form_p): New member
	function.
	* m2-lang.c (m2_language_data): Remove
	la_store_sym_names_in_linkage_form_p initializer.
	* objc-lang.c (objc_language_data): Likewise.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
2020-09-16 10:16:48 +01:00
Andrew Burgess
22c12a6c70 gdb: Convert language_data::string_lower_bound to a method
Convert language_data::string_lower_bound member variable to a virtual
method language_defn::string_lower_bound.

Over all of the languages we currently support there are currently
only two values for the lower bound, 0 or 1.  I noticed that in all
cases, if a language has C style arrays then the lower bound is 0,
otherwise the lower bound is 1.  So the default for the virtual method
in language.h makes use of this, which means languages don't have to
worry about providing a string_lower_bound method at all.

Except for Modula2.  This language is defined to not have C style
arrays, but has a string_lower_bound index of 0, this behaviour is
maintained after this commit by having Modula2 be the only language
that overrides the string_lower_bound method.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove string_lower_bound
	initializer.
	* c-lang.c (c_language_data): Likewise.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	* f-lang.c (f_language_data): Likewise.
	* go-lang.c (go_language_data): Likewise.
	* language.c (unknown_language_data): Likewise.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove string_lower_bound field.
	(language_defn::string_lower_bound): New member function.
	* m2-lang.c (m2_language_data): Remove string_lower_bound
	initializer.
	(m2_language::string_lower_bound): New member function.
	* objc-lang.c (objc_language_data): Remove string_lower_bound
	initializer.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
	* valops.c (value_cstring): Update call to string_lower_bound.
	(value_string): Likewise.
	* value.c (allocate_repeated_value): Likewise.
2020-09-16 10:16:48 +01:00
Andrew Burgess
67bd3fd5e4 gdb: Convert language_data::c_style_arrays to a method
Convert language_data::c_style_arrays member variable to a virtual
method language_defn::c_style_arrays_p.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove c_style_arrays
	initializer.
	(ada_language::c_style_arrays_p): New member fuction.
	* c-lang.c (c_language_data): Remove c_style_arrays
	initializer.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	* eval.c (ptrmath_type_p): Update call to c_style_arrays_p.
	* f-lang.c (f_language_data): Remove c_style_arrays initializer.
	(f_language::c_style_arrays_p): New member function.
	* go-lang.c (go_language_data): Remove c_style_arrays initializer.
	* infcall.c (value_arg_coerce): Update call to c_style_arrays_p.
	* language.c (unknown_language_data): Remove c_style_arrays
	initializer.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove c_style_arrays field.
	(language_defn::c_style_arrays_p): New member function.
	* m2-lang.c (m2_language_data): Remove c_style_arrays initializer.
	(m2_language::c_style_arrays_p): New member function.
	* objc-lang.c (objc_language_data): Remove c_style_arrays
	initializer.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
	* valarith.c (value_subscript): Update call to c_style_arrays_p,
	and update local variable to a bool.
	* valops.c (value_cast): Update call to c_style_arrays_p.
	(value_array): Likewise.
	* value.c (coerce_array): Likewise.
2020-09-16 10:16:47 +01:00
Andrew Burgess
85967615df gdb: Move la_language into the language_defn class
Move the language_data::la_language member variable into the
langage_defn class.

I have not made the la_language member variable a method of
langage_defn simply because of the large number of places that
la_language is referenced throughout GDB.  I have made the new member
variable constant though, so this should prevent accidental
assignment.

In the future we might consider converting la_language to a method,
but right now my goal is to remove the langage_data class, so I'm
happy to leave la_language as a constant member variable.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_language initializer.
	* c-lang.c (c_language_data): Likewise.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	* f-lang.c (f_language_data): Likewise.
	* go-lang.c (go_language_data): Likewise.
	* language.c (unknown_language_data): Likewise.
	(auto_language_data): Likewise.
	* language.h (language_data): Remove la_language field.
	(language_defn::language_defn): Initialise la_language field.
	(language_defn::la_language): New member variable.
	* m2-lang.c (m2_language_data): Remove la_language field.
	* objc-lang.c (objc_language_data): Likewise.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
2020-09-16 10:16:46 +01:00
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
Andrew Burgess
6f7664a9c3 gdb: Convert la_name and la_natural_name to methods
Convert the two language_data member variables la_name and
la_natural_name to virtual methods in language_defn struct called name
and natural_name respectively.

The virtual methods in the language_defn base class are pure virtual,
as every language must implement these, and as every language has a
unique name there's no sensible default here.

Given that every language must implement these methods I did wonder
about making this data passed into the base class constructor, but in
the end I went with the virtual method approach.  I'm open to changing
this approach if people prefer the constructor approach.

During updating the calls to language_defn::name I found in
add_set_language_command a place where we took la_name and then
capitalised the first letter to create a language name that could be
used in the documentation string.  I replaced this with a use of
natural_name instead as this seemed a better choice, in most cases
this will make no difference, as for most languages the natural_name
is just the name with the first character in upper case, but for some
languages, for example 'Open-CL' and 'Objective-C' this is not the
case.

In the case of asm_language the name is 'asm', while the natural_name
was previously 'assembly'.  I changed the natural name to 'Assembly',
this makes the documentation string case above cleaner, however, this
will change the MI output for -var-info-expression, where the 'lang'
field will change from 'assembly' to 'Assembly'.  It is possible this
could be a breaking change if a front-end is relying on the existing
name.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_name and
	la_natural_name initializers.
	(ada_language::name): New member function.
	(ada_language::natural_name): New member function.
	* c-lang.c (c_language_data): Remove la_name and
	la_natural_name initializers.
	(c_language::name): New member function.
	(c_language::natural_name): New member function.
	(cplus_language_data): Remove la_name and
	la_natural_name initializers.
	(cplus_language::name): New member function.
	(cplus_language::natural_name): New member function.
	(asm_language_data): Remove la_name and
	la_natural_name initializers.
	(asm_language::name): New member function.
	(asm_language::natural_name): New member function.
	(minimal_language_data): Remove la_name and
	la_natural_name initializers.
	(minimal_language::name): New member function.
	(minimal_language::natural_name): New member function.
	* compile/compile.c (compile_to_object): Update call to
	lanugage_defn::name.
	* d-lang.c (d_language_data): Remove la_name and
	la_natural_name initializers.
	(d_language::name): New member function.
	(d_language::natural_name): New member function.
	* expprint.c (print_subexp_standard): Update call to
	language_defn::name.
	(dump_raw_expression): Likewise
	(dump_prefix_expression): Likewise.
	* f-lang.c (f_language_data): Remove la_name and
	la_natural_name initializers.
	(f_language::name): New member function.
	(f_language::natural_name): New member function.
	* go-lang.c (go_language_data): Remove la_name and
	la_natural_name initializers.
	(go_language::name): New member function.
	(go_language::natural_name): New member function.
	* language.c (show_language_command): Update call to
	language_defn::name.
	(set_language_command): Likewise.
	(language_enum): Likewise.
	(language_str): Likewise.
	(add_set_language_command): Likewise, use
	language_defn::natural_name in the doc string.
	(unknown_language_data): Remove la_name and
	la_natural_name initializers.
	(unknown_language::name): New member function.
	(unknown_language::natural_name): New member function.
	(auto_language_data): Remove la_name and
	la_natural_name initializers.
	(auto_language::name): New member function.
	(auto_language::natural_name): New member function.
	(language_lookup_primitive_type_as_symbol): Update call to
	language_defn::name.
	* language.h (language_data): Remove la_name and la_natural_name
	member variables.
	(language_defn::name): New member function.
	(language_defn::natural_name): New member function.
	* m2-lang.c (m2_language_data): Remove la_name and
	la_natural_name initializers.
	(m2_language::name): New member function.
	(m2_language::natural_name): New member function.
	* mi/mi-cmd-var.c (mi_cmd_var_info_expression): Update call to
	language_defn::natural_name.
	* objc-lang.c (objc_language_data): Remove la_name and
	la_natural_name initializers.
	(objc_language::name): New member function.
	(objc_language::natural_name): New member function.
	* opencl-lang.c (opencl_language_data): Remove la_name and
	la_natural_name initializers.
	(opencl_language::name): New member function.
	(opencl_language::natural_name): New member function.
	* p-lang.c (pascal_language_data): Remove la_name and
	la_natural_name initializers.
	(pascal_language::name): New member function.
	(pascal_language::natural_name): New member function.
	* rust-lang.c (rust_language_data): Remove la_name and
	la_natural_name initializers.
	(rust_language::name): New member function.
	(rust_language::natural_name): New member function.
	* symtab.c (lookup_language_this): Update call to
	language_defn::name.
2020-09-16 10:16:45 +01:00
Andrew Burgess
5bae7c4e04 gdb: Convert la_name_of_this to a method
Convert language_data::la_name_of_this member variable to a virtual
method language_defn::name_of_this.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove la_name_of_this
	initializer.
	* ax-gdb.c (gen_expr): Update call to name_of_this.
	* c-exp.y (classify_name): Likewise.
	* c-lang.c (c_language_data): Remove la_name_of_this initializer.
	(cplus_language_data): Likewise.
	(cplus_language::name_of_this): New member function.
	(asm_language_data): Remove la_name_of_this initializer.
	(minimal_language_data): Likewise.
	* d-lang.c (d_language_data): Likewise.
	(d_language::name_of_this): New member function.
	* expprint.c (print_subexp_standard): Update call to name_of_this.
	* f-lang.c (f_language_data): Remove la_name_of_this initializer.
	* go-lang.c (go_language_data): Likewise.
	* language.c (unknown_language_data): Likewise.
	(unknown_language::name_of_this): New member function.
	(auto_language_data): Remove la_name_of_this initializer.
	(auto_language::name_of_this): New member function.
	* language.h (language_data): Delete la_name_of_this member
	variable.
	(language_defn::name_of_this): New member function.
	* m2-lang.c (m2_language_data): Remove la_name_of_this
	initializer.
	* objc-lang.c (objc_language_data): Likewise.
	(objc_language::name_of_this): New member function.
	* opencl-lang.c (opencl_language_data): Remove la_name_of_this
	initializer.
	* p-lang.c (pascal_language_data): Likewise.
	(pascal_language::name_of_this): New member function.
	* rust-lang.c (rust_language_data): Remove la_name_of_this
	initializer.
	* symtab.c (lookup_language_this): Update call to name_of_this.
	(lookup_symbol_aux): Likewise.
	* valops.c (value_of_this): Likewise.
2020-09-16 10:16:45 +01:00
Andrew Burgess
22e3f3ed5c gdb: Convert la_struct_too_deep_ellipsis to a method
Convert language_data::la_struct_too_deep_ellipsis member variable to
a method in language_defn.

There should be no user visible changes after this commit.

gdb/ChangeLog:

	* ada-lang.c (ada_language_data): Remove
	la_struct_too_deep_ellipsis initializer.
	(ada_language::struct_too_deep_ellipsis): New member function.
	* c-lang.c (c_language_data): Remove la_struct_too_deep_ellipsis
	initializer.
	(cplus_language_data): Likewise.
	(asm_language_data): Likewise.
	(minimal_language_data): Likewise.
	* cp-valprint.c (cp_print_value): Update call to
	struct_too_deep_ellipsis.
	* d-lang.c (d_language_data): Remove la_struct_too_deep_ellipsis
	initializer.
	* f-lang.c (f_language_data): Likewise.
	(f_language::struct_too_deep_ellipsis): New member function.
	* go-lang.c (go_language_data): Remove la_struct_too_deep_ellipsis
	initializer.
	* language.c (unknown_language_data): Likewise.
	(auto_language_data): Likewise.
	* language.h (language_data): Delete la_struct_too_deep_ellipsis
	member variable.
	(language_defn::struct_too_deep_ellipsis): New member function.
	* m2-lang.c (m2_language_data): Remove la_struct_too_deep_ellipsis
	initializer.Q
	* objc-lang.c (objc_language_data): Likewise.
	* opencl-lang.c (opencl_language_data): Likewise.
	* p-lang.c (pascal_language_data): Likewise.
	* rust-lang.c (rust_language_data): Likewise.
	* valprint.c (val_print_check_max_depth): Update call to
	struct_too_deep_ellipsis.
2020-09-16 10:16:44 +01:00
Tom Tromey
27087b7f6c Apply 'const' in more places
Many global arrays in gdb could be marked "const" but are not.  This
patch changes some of them.  (There may be other arrays that could
benefit from this treatment.  I only examined arrays of strings.)

This lets the linker move some symbols to the readonly data section.
For example, previously:

0000000000000000 d _ZL18can_use_agent_enum

is now:

0000000000000030 r _ZL18can_use_agent_enum

2020-09-14  Tom Tromey  <tromey@adacore.com>

	* x86-tdep.h (x86_in_indirect_branch_thunk): Update.
	* x86-tdep.c (x86_is_thunk_register_name)
	(x86_in_indirect_branch_thunk): Update.
	* sparc64-tdep.c (sparc64_fpu_register_names)
	(sparc64_cp0_register_names, sparc64_register_names)
	(sparc64_pseudo_register_names): Now const.
	* sparc-tdep.h (struct gdbarch_tdep) <fpu_register_names,
	cp0_registers_num>: Now const.
	* sparc-tdep.c (sparc_core_register_names)
	(sparc32_fpu_register_names, sparc32_cp0_register_names)
	(sparc32_pseudo_register_names): Now const.
	(validate_tdesc_registers): Update.
	* rust-lang.c (rust_extensions): Now const.
	* p-lang.c (p_extensions): Now const.
	* objc-lang.c (objc_extensions): Now const.
	* nto-tdep.c (nto_thread_state_str): Now const.
	* moxie-tdep.c (moxie_register_names): Now const.
	* mips-tdep.h (struct gdbarch_tdep) <mips_processor_reg_names>:
	Now const.
	* mips-tdep.c (mips_generic_reg_names, mips_tx39_reg_names)
	(mips_linux_reg_names): Now const.
	(mips_gdbarch_init): Update.
	* microblaze-tdep.c (microblaze_register_names): Now const.
	* m68k-tdep.c (m68k_register_names): Now const.
	* m32r-tdep.c (m32r_register_names): Now const.
	* ia64-tdep.c (ia64_register_names): Now const.
	* i386-tdep.h (struct gdbarch_tdep) <register_names,
	ymmh_register_names, ymm16h_regnum, mpx_register_names,
	k_register_names, zmmh_register_names, xmm_avx512_register_names,
	ymm_avx512_register_names, pkeys_register_names>: Now const.
	* i386-tdep.c (i386_register_names, i386_zmm_names)
	(i386_zmmh_names, i386_k_names, i386_ymm_names, i386_ymmh_names)
	(i386_mpx_names, i386_pkeys_names, i386_bnd_names)
	(i386_mmx_names, i386_byte_names, i386_word_names): Now const.
	* f-lang.c (f_extensions): Now const.
	* d-lang.c (d_extensions): Now const.
	* csky-tdep.c (csky_register_names): Now const.
	* charset.c (default_charset_names, charset_enum): Now const.
	(_initialize_charset): Update.
	* c-lang.c (c_extensions, cplus_extensions, asm_extensions): Now
	const.
	* bsd-uthread.c (bsd_uthread_solib_names): Now const.
	(bsd_uthread_solib_loaded): Update.
	(bsd_uthread_state): Now const.
	* amd64-tdep.c (amd64_register_names, amd64_ymm_names)
	(amd64_ymm_avx512_names, amd64_ymmh_names)
	(amd64_ymmh_avx512_names, amd64_mpx_names, amd64_k_names)
	(amd64_zmmh_names, amd64_zmm_names, amd64_xmm_avx512_names)
	(amd64_pkeys_names, amd64_byte_names, amd64_word_names)
	(amd64_dword_names): Now const.
	* agent.c (can_use_agent_enum): Now const.
	* ada-tasks.c (task_states, long_task_states): Now const.
	* ada-lang.c (known_runtime_file_name_patterns)
	(known_auxiliary_function_name_patterns, attribute_names)
	(standard_exc, ada_extensions): Now const.

gdbserver/ChangeLog
2020-09-14  Tom Tromey  <tromey@adacore.com>

	* tracepoint.cc (eval_result_names): Now const.
	* ax.cc (gdb_agent_op_names): Now const.
2020-09-14 13:31:01 -06:00
Simon Marchi
22c4c60c86 gdb: remove TYPE_FIXED_INSTANCE
gdb/ChangeLog:

	* gdbtypes.h (TYPE_FIXED_INSTANCE): Remove, replace all
	uses with type::is_fixed_instance.

Change-Id: I57731b5ab44aac7d8896a32b9c7481891baea51a
2020-09-14 11:08:07 -04:00
Simon Marchi
9cdd0d12cc gdb: add type::is_fixed_instance / type::set_is_fixed_instance
Add the `is_fixed_instance` and `set_is_fixed_instance` methods on `struct
type`, in order to remove the `TYPE_FIXED_INSTANCE` macro.  In this patch, the
macro is changed to use the getter, so all the call sites of the macro that are
used as a setter are changed to use the setter method directly.  The next patch
will remove the macro completely.

gdb/ChangeLog:

	* gdbtypes.h (struct type) <is_fixed_instance,
	set_is_fixed_instance>: New methods.
	(TYPE_FIXED_INSTANCE): Use type::is_fixed_instance, change all
	write call sites to use type::set_is_fixed_instance.

Change-Id: I4401d81512fab9eab4232bbea48ce6c7d586b94c
2020-09-14 11:08:06 -04:00
Simon Marchi
e46d3488de gdb: remove TYPE_STUB
gdb/ChangeLog:

	* gdbtypes.h (TYPE_STUB): Remove, replace all
	uses with type::is_stub.

Change-Id: Iec25b50449a0d10a38f815209e478c343e98632c
2020-09-14 11:07:59 -04:00
Simon Marchi
b4b7375953 gdb: add type::is_stub / type::set_is_stub
Add the `is_stub` and `set_is_stub` methods on `struct type`, in order
to remove the `TYPE_STUB` macro.  In this patch, the macro is changed to
use the getter, so all the call sites of the macro that are used as a
setter are changed to use the setter method directly.  The next patch
will remove the macro completely.

gdb/ChangeLog:

	* gdbtypes.h (struct type) <is_stub, set_is_stub>: New methods.
	(TYPE_STUB): Use type::is_stub, change all write call sites to
	use type::set_is_stub.

Change-Id: Ie935e8fe72c908afd8718411e83f4ff00c386bf3
2020-09-14 11:07:58 -04:00
Simon Marchi
c6d940a956 gdb: remove TYPE_UNSIGNED
gdb/ChangeLog:

	* gdbtypes.h (TYPE_UNSIGNED): Remove, replace all uses with
	type::is_unsigned.

Change-Id: I84f76f5cd44ff7294e421d317376a9e476bc8666
2020-09-14 11:07:57 -04:00
Tom Tromey
1b788fb6e9 Fix latent bug in ada-lang.c:remove_extra_symbols
I believe ada-lang.c:remove_extra_symbols has a latent bug.  This
function loops over a vector of symbols, removing duplicates according
to some criteria.

At the end of the loop it does:

      if (remove_p)
	syms->erase (syms->begin () + i);
      i += 1;

However, this seems wrong to me -- when removing the i'th element,
this code still increments "i", thus skipping an element.

At first I thought this was a regression from the patches to remove
cleanups from ada-lang.c (this was when std::vector was introduced);
but I found that instead the bug seems to be older:

       if (remove_p)
         {
           for (j = i + 1; j < nsyms; j += 1)
             syms[j - 1] = syms[j];
           nsyms -= 1;
         }

       i += 1;

No test, as I don't know how to write one.

As this is Ada-specific, and was already reviewed internally by Joel,
I am checking it in.

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

	* ada-lang.c (remove_extra_symbols): Do not increment when
	removing an element
2020-09-09 12:48:27 -06:00