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gdb/ChangeLog:
* ada-lang.c (ada_lookup_simple_minsym): Remove trailing spaces
in function documentation.
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gdb/ChangeLog:
-Wshadow warning fix.
* ada-lang.c (ada_lookup_simple_minsym): Rename wild_match local
variable into wild_match_p. Adjust code accordingly.
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gdb/ChangeLog:
* ada-valprint.c (ada_val_print_1): Move the code handling
TYPE_CODE_ENUM inside its own lexical block. Declare
variables len and val there, instead of in the function's
top level block. Avoid declaring deref_val again in a way
that shadows another variable of the same name declared
in one of the up-level blocks. Just re-use the up-level
variable instead.
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This makes ada_lookup_encoded_symbol more consistent with other functions
such as ada_lookup_symbol_list, and also makes it clearer in the code
using that function that symbol and block are related.
gdb/ChangeLog:
* ada-lang.c (ada_lookup_encoded_symbol): Now returns void.
Replace block_found argument by symbol_info. Adjust
implementation accordingly. Add function documentation.
(ada_lookup_symbol): Adjust to new ada_lookup_encoded_symbol.
Fix documentation.
* ada-lang.h (ada_lookup_encoded_symbol): Update declaration.
* ada-exp.y (write_object_renaming): Adjust to new
ada_lookup_encoded_symbol API.
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gdb/ChangeLog:
* ada-lang.h (struct ada_symbol_info): Reformat. Improve
documentation.
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Rathish C <Rathish.C@kpitcummins.com>.
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gdb/ChangeLog:
* NEWS: Add entry for Ada varobj support.
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This patch introduces a new language-specific callback for varobj
objects, allowing us to move the language-specific bits of the
varobj_value_is_changeable_p routine to language-specific functions.
This is more elegant than testing for the varobj's language...
gdb/ChangeLog:
* varobj.c (default_value_is_changeable_p): New function,
extracted from varobj_value_is_changeable_p. Add declaration.
(ada_value_is_changeable_p): New function, extracted from
varobj_value_is_changeable_p. Add declaration.
(struct language_specific): New field "value_is_changeable_p".
(languages): Add entries for new field.
(varobj_create): Set language before calling install_new_value.
(varobj_value_is_changeable_p): Reimplement to call the varobj's
"value_is_changeable_p" language callback.
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This patch adds varobj support for Ada variables. Most of the code
is implemented in a separate Ada-specific file called ada-varobj.c.
The only bits in varobj.c are the functions used as the hooks in
the language-specific varobj's vector.
gdb/ChangeLog:
* ada-varobj.h, ada-varobj.c: New files.
* Makefile.in (SFILES): Add ada-varobj.c.
(HFILES_NO_SRCDIR): Add ada-varobj.h.
(COMMON_OBS): Add ada-varobj.o.
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This patch introduces the framework necessary to support type mutations.
The only language that currently provides a language-specific hook for
that feature is Ada, but the hook remain unimplemented for now. The
actual implementation is tied to the rest of the varobj code for Ada,
and thus will be provided then.
gdb/ChangeLog:
* varobj.c (ada_value_has_mutated): Add declaration. New function.
(struct language_specific): New field "value_has_mutated".
(languages): Set field "value_has_mutated" in each entry of array.
(varobj_value_has_mutated): New function.
(varobj_udpdate): Add handling of type mutation.
(value_of_root): Add handling of type mutation.
(ada_value_has_mutated): New function.
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* ia64-linux-nat.c (supply_fpregset, ia64_linux_fetch_register):
Always supply $fr0 as 0.0 and $fr1 as 1.0.
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explicitly free 'buffer' on exit paths. Decref 'membuf_object'
before returning.
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* ia64-linux-nat.c (u_offsets): Map IA64_EC_REGNUM to PT_AR_EC.
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On ia64-linux, GDB sometimes prints the following error when trying
to switch to a different task:
(gdb) task 3
Register 0 is not available
This is a random failure that sometimes happens, sometimes does not.
The error comes from the fact that the libunwind library is requesting
the value of register 0 (zero): This eventually leads us to
ia64-linux-nat.c:ia64_linux_fetch_register.
This function relies on ia64_cannot_fetch_register to determine
whether or not we have access to the register's value. The ptrace
interface does not provide the r0 value, and so we end up telling
the regcache that this register's value is not available. And yet,
for r0, we do not need to ask ptrace for its value, since it is
always zero.
So, the fix was to add a special rule for supplying a nul value
when regnum == IA64_GR0_REGNUM.
gdb/ChangeLog:
* ia64-linux-nat.c (ia64_linux_fetch_register): Add special
handling for r0.
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Eliminate struct ui_stream.
* ui-out.h (struct ui_stream): Delete.
(ui_out_field_stream): Adjust prototype.
(ui_out_stream_new, ui_out_stream_delete)
(make_cleanup_ui_out_stream_delete): Delete declarations.
* ui-out.c (ui_out_field_stream): Change prototype to take a
ui_file instead of a ui_stream. Adjust.
(ui_out_stream_new, ui_out_stream_delete, do_stream_delete)
(make_cleanup_ui_out_stream_delete): Delete.
* breakpoint.c (print_breakpoint_location)
(print_one_detail_ranged_breakpoint, print_it_watchpoint): Use
ui_file/mem_fileopen instead of ui_stream/ui_out_stream_new.
* disasm.c (dump_insns): Ditto.
(do_mixed_source_and_assembly, do_assembly_only): Adjust
prototype.
(gdb_disassembly): Use ui_file/mem_fileopen instead of
ui_stream/ui_out_stream_new.
* infcmd.c (print_return_value): Ditto.
* osdata.c (info_osdata_command): Don't allocate a local
ui_stream.
* stack.c (print_frame_arg, print_frame_args, print_frame): Use
ui_file/mem_fileopen instead of ui_stream/ui_out_stream_new.
* tracepoint.c (print_one_static_tracepoint_marker): Don't
allocate a local ui_stream.
* mi/mi-cmd-stack.c (list_arg_or_local): Use ui_file/mem_fileopen
instead of ui_stream/ui_out_stream_new.
(list_args_or_locals): Don't allocate a local ui_stream.
* mi/mi-main.c (get_register, mi_cmd_data_evaluate_expression)
(mi_cmd_data_read_memory): Use ui_file/mem_fileopen instead of
ui_stream/ui_out_stream_new.
* cli/cli-setshow.c (do_setshow_command): Ditto.
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set_gdbarch_process_record.
Initialize `arm_swi_record' field.
* arm-tdep.c (arm_process_record): New function.
(deallocate_reg_mem): New function.
(decode_insn): New function.
(thumb_record_branch): New function.
(thumb_record_ldm_stm_swi(): New function.
(thumb_record_misc): New function.
(thumb_record_ld_st_stack): New function.
(thumb_record_ld_st_imm_offset): New function.
(thumb_record_ld_st_reg_offset(): New function.
(thumb_record_add_sub_cmp_mov): New function.
(thumb_record_shift_add_sub): New function.
(arm_record_coproc_data_proc): New function.
(arm_record_coproc): New function.
(arm_record_b_bl): New function.
(arm_record_ld_st_multiple): New function.
(arm_record_ld_st_reg_offset): New function.
(arm_record_ld_st_imm_offset): New function.
(arm_record_data_proc_imm): New function.
(arm_record_data_proc_misc_ld_str): New function.
(arm_record_extension_space): New function.
(arm_record_strx): New function.
(sbo_sbz): New function.
(struct insn_decode_record): New structure for arm insn record.
(REG_ALLOC): New macro for reg allocations.
(MEM_ALLOC): New macro for memory allocations.
* arm-tdep.h (struct gdbarch_tdep): New field 'arm_swi_record'
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(store_register): Likewise.
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* NEWS (set breakpoint condition-evaluation): Change "gdb" to "host".
Describe also the option "auto".
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* sparc-nat.c (sparc_xfer_wcookie): Make static.
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int64_t member before computing entry_size.
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Python scripting: Add new method Value.referenced_value to
gdb.Value which can dereference pointer as well as reference
values.
* NEWS: Add entry under 'Python scripting' about the new method
Value.referenced_value on gdb.Value objects.
* python/py-value.c (valpy_referenced_value): New function
defining a new method on gdb.Value objects which can dereference
pointer and reference values.
* testsuite/gdb.python/py-value.cc: Add test case for
testing the methodology exposing C++ values to Python.
* testsuite/gdb.python/py-value-cc.exp: Add tests testing the
methodology exposing C++ values to Python.
* testsuite/gdb.python/Makefile.in: Add py-value-cc to
EXECUTABLES.
* docs/gdb.texinfo (Python API/Values From Inferior): Add
description about the new method Value.referenced_value. Add
description on how Value.dereference is different (and similar)
to Value.referenced_value.
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* MAINTAINERS (Write After Approval): Add myself to the list.
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in addition to "main".
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To reproduce the problem, simply try the following with any program:
(gdb) maintenance agent-eval 1.0
Critical error handler: process [...] terminated due to access violation
(this is on Windows; on GNU/Linux, the libc copes better)
The problem is quite simple: gen_expr is given an expression that
contains an unrecognized operator (OP_DOUBLE in this case). When that
happens, it tries to report an error with a string image of the operator
in the error message. Conversion of the opcode into a string is done
using op_string which, despite its name, probably is not what the author
was looking for. This function returns NULL for a lot of the opcodes,
thus triggering the crash.
There is a function that corresponds to what we are looking for:
expprint.c:op_name. It was static, though, so I made it non-static,
and used it from ax-gdb.c:gen_expr.
gdb/ChangeLog:
* expression.h (op_name): Add declaration.
* expprint.c (op_name): Remove declaration. Make non-static.
* ax-gdb.c (gen_expr): Use op_name instead of op_string.
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gdb/
* amd64-linux-nat.c (amd64_linux_siginfo_fixup): Use siginfo_t instead
of struct siginfo.
* arm-linux-nat.c (arm_linux_stopped_data_address): Likewise.
* ia64-linux-nat.c (ia64_linux_stopped_data_address): Likewise.
* linux-nat.c (linux_nat_siginfo_fixup, siginfo_fixup)
(linux_xfer_siginfo, linux_nat_set_siginfo_fixup)
(linux_nat_get_siginfo): Likewise.
* linux-nat.h (struct lwp_info, linux_nat_set_siginfo_fixup)
(linux_nat_get_siginfo): Likewise.
* linux-tdep.c (linux_get_siginfo_type): Likewise.
* ppc-linux-nat.c (ppc_linux_stopped_data_address): Likewise.
* procfs.c (gdb_siginfo_t): Likewise.
gdbserver/
* linux-arm-low.c (arm_stopped_by_watchpoint): Use siginfo_t instead of
struct siginfo.
* linux-low.c (siginfo_fixup, linux_xfer_siginfo): Likewise.
* linux-x86-low.c (x86_siginfo_fixup): Likewise.
* linux-low.h: Include <signal.h>.
(struct siginfo): Remove forward declaration.
(struct linux_target_ops) <siginfo_fixup>: Use siginfo_t instead of
struct siginfo.
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* remote.c (remote_start_remote): Clear `rs->starting_up' on early
returns.
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* amd64-tdep.c (amd64_displaced_step_copy_insn): Complete missing "}" in
comment.
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Code cleanupp: Use cu_offset and sect_offset compile time type checking.
* dwarf2expr.c (add_piece, dwarf_get_base_type, execute_stack_op)
(ctx_no_dwarf_call, ctx_no_get_base_type): Use cu_offset and
sect_offset.
* dwarf2expr.h (cu_offset, sect_offset): New types.
(struct dwarf_expr_context_funcs) <dwarf_call>
(struct dwarf_expr_context_funcs) <get_base_type>: Use cu_offset and
sect_offset.
(struct dwarf_expr_context) <len>: Improve the comment.
(struct dwarf_expr_piece, ctx_no_dwarf_call, ctx_no_get_base_type): Use
cu_offset and sect_offset.
* dwarf2loc.c (per_cu_dwarf_call, dwarf_expr_dwarf_call)
(dwarf_expr_get_base_type, needs_frame_dwarf_call)
(dwarf2_compile_expr_to_ax, disassemble_dwarf_expression): Likewise.
* dwarf2loc.h: Include dwarf2expr.h.
(dwarf2_fetch_die_location_block, dwarf2_get_die_type): Use cu_offset
and sect_offset.
* dwarf2read.c (struct dwarf2_per_objfile) <debug_types_type_hash>:
Improve the comment.
(struct comp_unit_head, struct dwarf2_cu, struct dwarf2_per_cu_data)
(struct signatured_type, struct line_header, struct partial_die_info)
(struct die_info, find_partial_die, dwarf2_get_ref_die_offset)
(lookup_signatured_type_at_offset, dwarf2_find_containing_comp_unit)
(get_die_type_at_offset, create_cus_from_index)
(create_signatured_type_table_from_index, dw2_get_file_names)
(offset_in_cu_p, read_comp_unit_head, error_check_comp_unit_head)
(read_and_check_comp_unit_head, read_and_check_type_unit_head)
(create_debug_types_hash_table, process_psymtab_comp_unit)
(load_partial_comp_unit, create_all_comp_units)
(partial_die_parent_scope, partial_die_full_name, skip_one_die)
(load_full_comp_unit, dwarf2_physname, read_import_statement)
(inherit_abstract_dies, read_func_scope, read_call_site_scope)
(dwarf2_add_member_fn, process_enumeration_scope, read_module_type)
(read_typedef, die_hash, die_eq, read_full_die, dwarf2_read_abbrevs)
(load_partial_dies, read_partial_die, find_partial_die_in_comp_unit)
(find_partial_die, read_attribute_value, lookup_die_type)
(dump_die_shallow, store_in_ref_table): Use cu_offset and sect_offset.
(is_ref_attr): New function comment.
(dwarf2_get_ref_die_offset): New function comment, new variable retval.
Use cu_offset and sect_offset.
(follow_die_offset, follow_die_ref, dwarf2_fetch_die_location_block)
(dwarf2_get_die_type, follow_die_sig, lookup_signatured_type_at_offset)
(load_full_type_unit, read_signatured_type, per_cu_header_read_in)
(dwarf2_find_containing_comp_unit, struct dwarf2_offset_and_type)
(offset_and_type_hash, offset_and_type_eq, set_die_type)
(get_die_type_at_offset, partial_die_hash, partial_die_eq)
(write_one_signatured_type, write_psymtabs_to_index): Use cu_offset and
sect_offset.
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Code cleanup.
* python/py-auto-load.c (source_section_scripts): New variable back_to.
Turn fclose and xfree calls into make_cleanup_fclose and make_cleanup
with xfree.
(auto_load_objfile_script): Turn fclose into make_cleanup_fclose.
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* NEWS: Describe new options --init-command=FILE, -ix and
--init-eval-command=COMMAND, -iex.
* main.c (struct cmdarg): New enum items CMDARG_INIT_FILE and
CMDARG_INIT_COMMAND.
(captured_main): New enum items OPT_IX and OPT_IEX. Add
"init-command", "init-eval-command", "ix" and "iex" to the variable
long_options. Handle OPT_IX and OPT_IEX. Process them from CMDARG_VEC.
New comment for CMDARG_FILE and CMDARG_COMMAND processing.
(print_gdb_help): Describe --init-command=FILE, -ix and
--init-eval-command=COMMAND, -iex.
gdb/doc/
* gdb.texinfo (File Options): Describe --init-command=FILE, -ix and
--init-eval-command=COMMAND, -iex.
(Startup): Describe -iex and -ix. Simplify the example
for "set auto-load-scripts off".
gdb/testsuite/
* gdb.gdb/selftest.exp (do_steps_and_nexts): New entry
for cmdarg_vec = NULL. Remove entries for cmdsize = 1, cmdarg = and
ncmd = 0. New entry for VEC_cleanup cmdarg_s.
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Code cleanup.
* main.c (struct cmdarg): Move it here from main. Add more comments.
(cmdarg_s, VEC (cmdarg_s)): New.
(main): Move struct cmdarg from here. New variables cmdarg_vec and
cmdarg_p. Remove variables cmdsize and ncmd and their initialization.
Install cleanup for cmdarg_vec. Update filling for options 'x' and
'X'. Replace cmdarg processing by cmdarg_vec processing. Remove xfree
of CMDARG.
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PR symtab/13777
* dwarf2read.c (process_full_comp_unit): Set LOCATIONS_VALID only for
GCC >=4.5.
gdb/testsuite/
PR symtab/13777
* gdb.dwarf2/dw2-skip-prologue.S (DW_AT_producer): Set it to 4.5.0.
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* tui-tui.win.c (tui_resize_all): Use erase and clearok instead
of clear.
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* source.c (add_path): Use memmove instead of strcpy because the
strings overlap.
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Consider the following declaration:
type Small is new Integer range 0 .. 2 ** 4 - 1;
type Simple_Array is array (1 .. 4) of Small;
pragma Pack (Simple_Array);
SA : Simple_Array := (1, 2, 3, 4);
Trying to change the value of one of the elements in the packed array
causes the debugger to crash:
(gdb) set sa(3) := 9
[1] 4880 segmentation fault gdb -q foo
The circumstances leading to the crash are as follow:
. ada_evaluate_subexp creates a value corresponding to "sa(3)".
. ada_evaluate_subexp then tries to assign 9 to this value, and
for this calls value_assign (via ada_value_assign).
. Because the array is packed, the destination value is 3 bits long,
and as a result, value_assign uses the parent to determine that
element byte address and offset:
| if (value_bitsize (toval))
| {
| struct value *parent = value_parent (toval);
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| changed_addr = value_address (parent) + value_offset (toval);
The destination value (corresponding to "sa(3)") was incorrectly created
by ada-lang.c:ada_value_primitive_packed_val, because the "parent" was
left as NULL. So, when we try to dereference it to get the parent address,
GDB crashed.
The first part of the fix therefore consists in setting that field.
This required the addition of a new "setter" in value.[hc]. It fixes
the crash, but is still not sufficient for the assignment to actually
work.
The second part of the problem came from the fact that value_assign
seems to expect the "child"'s address to be equal to the parent's address,
with the difference being the offset. Unfortunately, this requirement was
not followed by ada_value_primitive_packed_val, so the second part of
the fix consisted in fixing that.
Still, this was not sufficient, because it caused a regression when
trying to perform an aggregate assignment of a packed array of packed
record. The key element here is the nesting of packed entities.
Looking at the way ada_value_primitive_packed_val creates the value
of each sub-component, one can see that the value's offset is set
to the offset compared to the start of the parent. This was meant to
match what value_primitive_field does as well.
So, with our array of records, if the record offset was 2, and if
the field we're interested in that record is at offset 1, the record
value's offset would be set to 2, and the field value's offset would
be set to 1. But the address for both values would be left to the
array's address. This is where things start breaking down, because
the value_address function for our field value would return the
address of the array + 1, instead of + 3.
This is what causes the final issue, here, because ada-lang.c's
value_assign_to_component needs to compute the offset of the
subcomponent compared to the top-level aggregate's start address
(the array in our case). And it does so by subtracting the array's
address from the sub-component's address. When you have two levels
of packed components, and the mid-level component is at an offset of
the top-level component, things didn't work, because the component's
address was miscomputed (the parent's offset is missing).
The fix consists is fixing value_address to match the work done by
value_primitive_field (where we ignore the parent's offset).
gdb/ChangeLog:
* value.h (set_value_parent): Add declaration.
* value.c (set_value_parent): New function.
(value_address): If VALUE->PARENT is not NULL, then use it as
the base address instead of VALUE->LOCATION.address.
* ada-lang.c (ada_value_primitive_packed_val): Keep V's address
the same as OBJ's address. Adjust V's offset accordingly.
Set V's parent.
gdb/testsuite/ChangeLog:
* gdb.ada/set_pckd_arr_elt: New testcase.
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PR breakpoints/10738
* dwarf2read.c (use_deprecated_index_sections): New global.
(struct partial_die_info): New member may_be_inlined.
(read_partial_die): Set may_be_inlined where appropriate.
(add_partial_subprogram): Add partial symbols for partial
DIEs that may be inlined.
(new_symbol_full): Add inlined subroutines to the current
scope.
(write_psymtabs_to_index): Bump version number.
(dwarf2_read_index): Read only version 6 indices unless
use_deprecated_index_sections is set.
* linespec.c (symbol_and_data_callback): New structure.
(iterate_inline_only): New function.
(iterate_over_all_matching_symtabs): New argument
"include_inline". If nonzero, also call the callback for
symbols representing inlined subroutines.
(lookup_prefix_sym): Pass extra argument to the above.
(find_function_symbols): Likewise.
(add_matching_symbols_to_info): Likewise.
* NEWS: Mention that GDB can now set breakpoints on inlined
functions.
gdb/doc:
PR breakpoints/10738
* gdb.texinfo (Inline Functions): Remove the now-unnecessary @item
stating that GDB cannot set breakpoints on inlined functions.
(Mode Options): Document --use-deprecated-index-sections.
(Index Section Format): Document new index section version format.
gdb/testsuite:
PR breakpoints/10738
* gdb.opt/inline-break.exp: New file.
* gdb.opt/inline-break.c: Likewise.
* gdb.dwarf2/inline-break.exp: Likewise.
* gdb.dwarf2/inline-break.S: Likewise.
* gdb.base/annota1.exp: Cope with old .gdb_index warnings.
* gdb.base/async-shell.exp: Likewise.
* lib/mi-support.exp (library_loaded_re): Likewise.
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Fix display of parameter of methods.
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Add missing prototype.
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Fix false compilation warning.
* gnu-v3-abi.c (print_one_vtable): Initialize ADDR.
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(arm_register_g_packet_guesses): New function.
(arm_gdbarch_init): Don't force a target description with
registers when the executable is detected as M-profile. Instead
set gdbarch->tdep->is_m. Register `g' packet guesses.
(_initialize_arm_tdep): Initialize the new target description.
* features/arm-with-m-fpa-layout.xml: New description.
* features/arm-with-m-fpa-layout.c: New, generated.
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When debugging on Windows with GDBserver, the debugger starts
failing after hitting a breakpoint. For instance:
(gdb) b foo
Breakpoint 1 at 0x40177e: file foo.adb, line 5.
(gdb) cont
Continuing.
Breakpoint 1, foo () at foo.adb:5
5 Put_Line ("Hello World."); -- STOP
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x00401782 in foo () at foo.adb:5
5 Put_Line ("Hello World."); -- STOP
There are two issues:
1. While trying to re-insert a breakpoint that is still inserted
in memory, insert_bp_location wipes out the breakpoint location's
shadow_contents. As a consequence, we cannot restore the proper
instruction when removing the breakpoint anymore. That's why
the inferior's behavior changes when trying to resume after
the breakpoint was hit.
2. mem-break.c:default_memory_insert_breakpoint passes a breakpoint
location's shadow_contents as the buffer for a memory read.
This reveals a limitation of the various memory-read target
functions. This patch documents this limitation and adjust
the two calls that seem to hit that limitation.
gdb/ChangeLog:
* breakpoint.c (breakpoint_xfer_memory): Add assertion.
Update function description.
(insert_bp_location): Do not wipe bl->target_info out.
* mem-break.c: #include "gdb_string.h".
(default_memory_insert_breakpoint): Do not call target_read_memory
with a pointer to the breakpoint's shadow_contents buffer. Use
a local buffer instead.
* m32r-tdep.c (m32r_memory_insert_breakpoint): Ditto.
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* cp-support.c (info_vtbl_command): Fix comment.
(_initialize_cp_support): Fix text.
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print_function_pointer_address for vtable slot.
gdb/testsuite
* gdb.cp/virtfunc2.exp: Update expected output.
* gdb.cp/pr9631.exp: Update expected output.
* gdb.cp/member-ptr.exp: Update expected output.
* gdb.cp/inherit.exp (test_print_mvi_classes): Update expected
output.
* gdb.cp/casts.exp: Update expected output.
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(hash_value_and_voffset, eq_value_and_voffset)
(compare_value_and_voffset, compute_vtable_size)
(print_one_vtable, gnuv3_print_vtable): New functions.
(init_gnuv3_ops): Initialize 'print_vtable' field.
* cp-support.c (info_vtbl_command): New function.
(_initialize_cp_support): Add "info vtbl".
* cp-abi.h (cplus_print_vtable): Declare.
(struct cp_abi_ops) <print_vtable>: New field.
* cp-abi.c (cplus_print_vtable): New function.
* NEWS: Update.
gdb/testsuite
* gdb.cp/virtfunc.exp (make_one_vtable_result): New proc.
(test_info_vtbl): Likewise.
(do_tests): Call test_info_vtbl.
* gdb.cp/virtfunc.cc (va): New global.
gdb/doc
* gdb.texinfo (Debugging C Plus Plus): Document "info vtbl".
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