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2018-01-09x86-64: Add tests for -z separate-code -z max-page-size=0x1000users/hjl/pr22393/relroH.J. Lu5-0/+103
PR ld/22393 * testsuite/ld-x86-64/pr22393-3a.c: New file. * testsuite/ld-x86-64/pr22393-3a.rd: Likewise. * testsuite/ld-x86-64/pr22393-3b.c: Likewise. * testsuite/ld-x86-64/pr22393-3b.rd: Likewise. * testsuite/ld-x86-64/x86-64.exp: Run tests for -z separate-code -z max-page-size=0x1000.
2018-01-09ld: Add tests for -z separate-code and -z noseparate-codeH.J. Lu13-1/+179
Verify that -z separate-code works and -z noseparate-code doesn't disable -z relro. PR ld/22393 * testsuite/ld-elf/pr16322.d: Add -z noseparate-code. * testsuite/ld-elf/pr22393-1.s: New file. * testsuite/ld-elf/pr22393-1a.d: Likewise. * testsuite/ld-elf/pr22393-1b.d: Likewise. * testsuite/ld-elf/pr22393-1c.d: Likewise. * testsuite/ld-elf/pr22393-1d.d: Likewise. * testsuite/ld-elf/pr22393-1e.d: Likewise. * testsuite/ld-elf/pr22393-1f.d: Likewise. * testsuite/ld-elf/pr22393-2a.c: Likewise. * testsuite/ld-elf/pr22393-2a.rd: Likewise. * testsuite/ld-elf/pr22393-2b.c: Likewise. * testsuite/ld-elf/pr22393-2b.rd: Likewise. * testsuite/ld-elf/shared.exp: Run tests for -z separate-code.
2018-01-09ld/ppc/spu: Also set expld.textseg.phase to exp_seg_noneH.J. Lu3-0/+3
* emultempl/ppc32elf.em (ppc_before_allocation): Also set expld.textseg.phase to exp_seg_none. * emultempl/ppc64elf.em (prelim_size_sections): Likewise. * emultempl/spuelf.em (spu_before_allocation): Likewise.
2018-01-09ld: Create a new LOAD segment for separate code-only LOAD segmentH.J. Lu1-7/+25
When generating separate code and read-only data LOAD segments, create a new LOAD segment if the previous section contains text and the current section doesn't or vice versa: Elf file type is DYN (Shared object file) Entry point 0x200ff0 There are 7 program headers, starting at offset 52 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align LOAD 0x000000 0x00000000 0x00000000 0x00200 0x00200 R 0x200000 LOAD 0x000fd0 0x00200fd0 0x00200fd0 0x0002b 0x0002b R E 0x200000 LOAD 0x001000 0x00201000 0x00201000 0x00058 0x00058 R 0x200000 LOAD 0x200f80 0x00400f80 0x00400f80 0x000a0 0x000a0 RW 0x200000 DYNAMIC 0x200f80 0x00400f80 0x00400f80 0x00080 0x00080 RW 0x4 GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RW 0x10 GNU_RELRO 0x200f80 0x00400f80 0x00400f80 0x00080 0x00080 R 0x1 Section to Segment mapping: Segment Sections... 00 .hash .gnu.hash .dynsym .dynstr .rela.plt 01 .plt .text 02 .rodata .eh_frame 03 .dynamic .got.plt 04 .dynamic 05 06 .dynamic This is to prevent executing data in read-only sections as instructions. Also don't put a writable section in a read-only segment if there is a RELRO segment. Since there are more than 2 LOAD segments, the minimum file size is bigger than the maximum page size which is 2MB (0x200000): -rwxr-xr-x 1 hjl hjl 2104892 Nov 12 11:53 libfoo.so "-z max-page-size=0x1000" can be used to reduce the maximum page size to 4KB (0x1000): -rwxr-xr-x 1 hjl hjl 11836 Nov 12 13:22 libfoo.so Elf file type is DYN (Shared object file) Entry point 0x1ff0 There are 7 program headers, starting at offset 52 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flg Align LOAD 0x000000 0x00000000 0x00000000 0x00200 0x00200 R 0x1000 LOAD 0x000fd0 0x00001fd0 0x00001fd0 0x0002b 0x0002b R E 0x1000 LOAD 0x001000 0x00002000 0x00002000 0x00058 0x00058 R 0x1000 LOAD 0x001f80 0x00002f80 0x00002f80 0x000a0 0x000a0 RW 0x1000 DYNAMIC 0x001f80 0x00002f80 0x00002f80 0x00080 0x00080 RW 0x4 GNU_STACK 0x000000 0x00000000 0x00000000 0x00000 0x00000 RW 0x10 GNU_RELRO 0x001f80 0x00002f80 0x00002f80 0x00080 0x00080 R 0x1 Section to Segment mapping: Segment Sections... 00 .hash .gnu.hash .dynsym .dynstr .rela.plt 01 .plt .text 02 .rodata .eh_frame 03 .dynamic .got.plt 04 .dynamic 05 06 .dynamic PR ld/22393 * elf.c (_bfd_elf_map_sections_to_segments): When generating separate code and read-only data LOAD segments, create a new LOAD segment if the previous section contains text and the current section doesn't or vice versa. Don't put a writable section in a read-only segment if there is a RELRO segment.
2018-01-09ld: Add TEXT_SEGMENT_ALIGN/TEXT_SEGMENT_{RELRO_}ENDH.J. Lu7-29/+135
Text-only LOAD segment has the same requirement for segment alignment and page sizes as GNU_RELRO segment. But for GNU_RELRO segment, the segment may not end at the same address of the end of data segment. But text-only LOAD segment is exactly the same as text LOAD segment. This patch adds TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END, which mimic DATA_SEGMENT_ALIGN, DATA_SEGMENT_RELRO_END and DATA_SEGMENT_END. They work on text segment, instead of data segment. TEXT_SEGMENT_ALIGN is placed at the start of text sections. Both TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END are placed at the end of text sections. TEXT_SEGMENT_ALIGN is created from DATA_SEGMENT_ALIGN by replacing DATA_SEGMENT_ALIGN with TEXT_SEGMENT_ALIGN. It simply sets text_start and text_end from TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END the same way as relro_start and relro_end are set from DATA_SEGMENT_ALIGN, DATA_SEGMENT_RELRO_END and DATA_SEGMENT_END. include/ PR ld/22393 * bfdlink.h (bfd_link_info): Add text_start and text_end. ld/ PR ld/22393 * ldexp.c (exp_print_token): Add TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END. (fold_unary): Handle TEXT_SEGMENT_END. (fold_binary): Handle TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END. (exp_unop): Also check TEXT_SEGMENT_END. * ldexp.h (ldexp_control): Add textseg. * ldgram.y: Handle TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END. * ldlang.c (strip_excluded_output_sections): Also set expld.textseg.phase to exp_seg_none. (lang_size_sections_1): Also call ldlang_check_relro_region with &expld.textseg. (lang_size_relro_segment): Also handle expld.textseg. (lang_size_sections): Also handle expld.textseg. Set link_info.text_start and link_info.text_end for -z textonly. (lang_find_relro_sections): Also check expld.textseg. * ldlex.l: Add TEXT_SEGMENT_ALIGN, TEXT_SEGMENT_RELRO_END and TEXT_SEGMENT_END. * scripttempl/elf.sc (TEXT_SEGMENT_ALIGN): New. (TEXT_SEGMENT_RELRO_END): Likewise. (TEXT_SEGMENT_END): Likewise. Add ${TEXT_SEGMENT_ALIGN} before text sections and add ${TEXT_SEGMENT_RELRO_END}/${TEXT_SEGMENT_END} after text sections for non-relocatable link.
2018-01-09ld: Add "-z separate-code" option to ELF linkerH.J. Lu6-23/+187
Code-only LOAD segment has the same requirement for segment alignment and page sizes as GNU_RELRO segment. But for GNU_RELRO segment, the segment may not end at the same address of the end of data segment. But for code-only LOAD segment, it is exactly the same as code LOAD segment. The new "-z separate-code" option will turn on both separate code read-only data LOAD segments and GNU_RELRO segment. The new "-z noseparate-code" option will turn off only separate code and read-only data LOAD segments. "-z relro" is updated not to turn off separate code and read-only data LOAD segments. "-z norelro" is updated to turn off both GNU_RELRO segment as well as separate code and read-only data LOAD segments. include/ PR ld/22393 * bfdlink.h (bfd_link_info): Change the relro field to 2 bits. ld/ PR ld/22393 * NEWS: Mention "-z separate-code". * emultempl/elf32.em (gld${EMULATION_NAME}_get_script): Get builtin linker scripts and return linker scripts from disk for "-z separate-code". (gld${EMULATION_NAME}_handle_option): Set the first bit of link_info.relro for "-z relro". Clear link_info.relro for "-z norelro". Set link_info.relro to 2 for "-z separate-code". Keep only the first bit of link_info.relro for "notextonly". * genscripts.sh: Generate linker scripts for "-z separate-code". (LD_FLAG): Set to *textonly for "-z separate-code". * lexsup.c (elf_shlib_list_options): Update linker help messsages for "-z relro" and "-z norelro". Add linker help messsages for "-z separate-code" and "-z noseparate-code". * ld.texinfo: Update "-z norelro". Document "-z separate-code".
2018-01-09[Arm] Add CSDB instructionJames Greenhalgh8-0/+55
CSDB is a new instruction which Arm has defined. As it shares the encoding space with NOP instructions, it is available from Armv3 in Arm mode, and Armv6T2 in Thumb mode. OK? If so, please commit on my behalf as I don't have commit rights over here. Thanks, James --- opcodes/ 2018-01-09 James Greenhalgh <james.greenhalgh@arm.com> * arm-dis.c (arm_opcodes): Add csdb. (thumb32_opcodes): Add csdb. gas/ 2018-01-09 James Greenhalgh <james.greenhalgh@arm.com> * config/tc-arm.c (insns): Add csdb, enable for Armv3 and above in Arm execution state, and Armv6T2 and above in Thumb execution state. * testsuite/gas/arm/csdb.s: New. * testsuite/gas/arm/csdb.d: New. * testsuite/gas/arm/thumb2_it_bad.l: Add csdb. * testsuite/gas/arm/thumb2_it_bad.s: Add csdb.
2018-01-09Add support for the AArch64's CSDB instruction.James Greenhalgh7-1013/+1028
CSDB is a new instruction which Arm has defined. It has the same encoding as HINT #0x14 and is available at all architecture levels. opcodes * aarch64-tbl.h (aarch64_opcode_table): Add "csdb". * aarch64-asm-2.c: Regenerate. * aarch64-dis-2.c: Regenerate. * aarch64-opc-2.c: Regenerate. gas * testsuite/gas/aarch64/system.d: Update expected results to expect CSDB.
2018-01-09Fix breakpoint add on inlined function using function name.Xavier Roirand7-8/+188
Using this Ada example: package B is procedure Read_Small with Inline_Always; end B; package body B is Total : Natural := 0; procedure Read_Small is begin Total := Total + 1; end Read_Small; end B; and with B; procedure M is begin B.Read_Small; end M; % gnatmake -g -O0 -m m.adb -cargs -gnatn % gdb m Inserting a breakpoint on Read_Small inlined function does not work: (gdb) b read_small Breakpoint 1 at 0x40250e: file b.adb, line 5. (gdb) info b Num Type Disp Enb Address What 1 breakpoint keep y 0x000000000040250e in b.doit at b.adb:5 (gdb) In this exemple we should have two breakpoints set, one in package B and the other one in the inlined instance inside procedure M), like below: (gdb) b read_small Breakpoint 1 at 0x40250e: b.adb:5. (2 locations) (gdb) info b Num Type Disp Enb Address What 1 breakpoint keep y <MULTIPLE> 1.1 y 0x000000000040250e in b.doit at b.adb:5 1.2 y 0x0000000000402540 in m at b.adb:5 (gdb) Looking at the DWARF info for inlined instance of Read_Small: <1><1526>: Abbrev Number: 2 (DW_TAG_subprogram) <1527> DW_AT_name : ([...], offset: 0x1e82): b__read_small <152b> DW_AT_decl_file : 2 <152c> DW_AT_decl_line : 3 <152d> DW_AT_inline : 3 (declared as inline and inlined) [...] <2><1547>: Abbrev Number: 4 (DW_TAG_inlined_subroutine) <1548> DW_AT_abstract_origin: <0x1526> <154c> DW_AT_low_pc : 0x402552 <1554> DW_AT_high_pc : 0x2b <155c> DW_AT_call_file : 1 <155d> DW_AT_call_line : 5 <2><155e>: Abbrev Number: 0 During the parsing of DWARF info in order to produce partial DIE linked list, the DW_TAG_inlined_subroutine were skipped thus not present in the final partial dies. Taking DW_TAG_inlined_subroutine in account during the parsing process fixes the problem. gdb/ChangeLog: * dwarf2read.c (scan_partial_symbols, add_partial_symbol) (add_partial_subprogram, load_partial_dies): Add DW_TAG_inlined_subroutine handling. gdb/testsuite/ChangeLog: * gdb.ada/bp_inlined_func: New testcase.
2018-01-09PR22662, nds32: Fix a typographical error.Kuan-Lin Chen2-1/+6
2018-01-08RISC-V: Fix accidental embedded -shared regressions.Jim Wilson4-3/+18
ld/ * testsuite/ld-riscv-elf/c-lui.d: Don't use -shared. Check for _start instead of .text. * testsuite/ld-riscv-elf/c-lui.s: Add _start label. * testsuite/ld-riscv-elf/ld-riscv-elf.exp: Before __global_pointer$ tests, add call to check_shared_lib_support.
2018-01-09Automatic date update in version.inGDB Administrator1-1/+1
2018-01-08hurd: Add enough auxv support for AT_ENTRY for PIE binariesSamuel Thibault2-0/+65
Add PIE support for hurd, by faking an AT_ENTRY auxv entry. That value is expected to be read by svr4_exec_displacement, which will propagate the executable displacement. gdb/ChangeLog: * gdb/gnu-nat.c: Include <elf.h> and <link.h>. (gnu_xfer_auxv): New function. (gnu_xfer_partial): Call gnu_xfer_auxv when `object' is TARGET_OBJECT_AUXV.
2018-01-08x86: Properly encode vmovd with 64-bit memeoryH.J. Lu8-42/+158
For historical reason, we allow movd/vmovd with 64-bit register and memeory operands. But for vmovd, we failed to handle 64-bit memeory operand. This has been gone unnoticed since AT&T syntax always treats memory operand as 32-bit memory. This patch properly encodes vmovd with 64-bit memeory operands. It also removes AVX512 vmovd with 64-bit operands since GCC has case TYPE_SSEMOV: switch (get_attr_mode (insn)) { case MODE_DI: /* Handle broken assemblers that require movd instead of movq. */ if (!HAVE_AS_IX86_INTERUNIT_MOVQ && (GENERAL_REG_P (operands[0]) || GENERAL_REG_P (operands[1]))) return "%vmovd\t{%1, %0|%0, %1}"; return "%vmovq\t{%1, %0|%0, %1}"; and all AVX512 GNU assemblers set HAVE_AS_IX86_INTERUNIT_MOVQ, GCC won't generate AVX512 vmovd with 64-bit operand. gas/ PR gas/22681 * testsuite/gas/i386/i386.exp: Run x86-64-movd and x86-64-movd-intel. * testsuite/gas/i386/x86-64-movd-intel.d: New file. * testsuite/gas/i386/x86-64-movd.d: Likewise. * testsuite/gas/i386/x86-64-movd.s: Likewise. opcodes/ PR gas/22681 * i386-opc.tbl: Properly encode vmovd with Qword memeory operand. Remove AVX512 vmovd with 64-bit operands. * i386-tbl.h: Regenerated.
2018-01-08Fix GDBserver build failure when $development is falseYao Qi7-6/+37
When we set bfd/development.sh:$development to false, GDBserver failed to build, selftest.o: In function `selftests::run_tests(char const*)': binutils-gdb/gdb/gdbserver/../common/selftest.c:97:undefined reference to `selftests::reset()' collect2: error: ld returned 1 exit status selftest.o shouldn't be compiled and linked when $development is false. With this patch, in release mode, GDBserver doesn't nothing with option --selftest, $ ./gdbserver --selftest=foo Selftests are not available in a non-development build. $ ./gdbserver --selftest Selftests are not available in a non-development build. gdb/gdbserver: 2018-01-08 Yao Qi <yao.qi@linaro.org> Simon Marchi <simon.marchi@ericsson.com> * Makefile.in (OBS): Remove selftest.o. * configure.ac: Set srv_selftest_objs if $development is true. (GDBSERVER_DEPFILES): Append $srv_selftest_objs. * configure: Re-generated. * server.c (captured_main): Wrap variable selftest_filter with GDB_SELF_TEST. gdb/testsuite: 2018-01-08 Simon Marchi <simon.marchi@ericsson.com> * gdb.server/unittest.exp: Match the output in non-development mode.
2018-01-08Fix GDB build failure when $development is falseYao Qi7-8/+43
We don't build GDB selftests bits when $development is false. However, if we turn bfd/development.sh:$development to false, common/selftest.c is compiled which is not expected. It causes the build failure, selftest.o: In function `selftests::run_tests(char const*)': binutils-gdb/gdb/common/selftest.c:97: undefined reference to `selftests::reset()' collect2: error: ld returned 1 exit status I fix this issue by putting selftest.o selftest-arch.o into CONFIG_OBS only when $development is true. After this is fixed, there are other build failures in maint.c, this patch fixes them as well. In the release mode, the output of these commands are: (gdb) maintenance selftest Selftests are not available in a non-development build. (gdb) maintenance selftest foo Selftests are not available in a non-development build. (gdb) maintenance info selftests Selftests are not available in a non-development build. gdb: 2018-01-08 Yao Qi <yao.qi@linaro.org> Simon Marchi <simon.marchi@ericsson.com> * Makefile.in (COMMON_SFILES): Remove selftest-arch.c and common/selftest.c. (COMMON_OBS): Remove selftest.o. * configure.ac: Append selftest-arch.c and common/selftest.c to CONFIG_SRCS. Append selftest-arch.o and selftest.o to COMMON_OBS. * configure: Re-generated. * maint.c (maintenance_selftest): Wrap selftests::run_tests with GDB_SELF_TEST. (maintenance_info_selftests): Likewise. gdb/testsuite: 2018-01-08 Simon Marchi <simon.marchi@ericsson.com> * gdb.gdb/unittest.exp: Match output in non-development mode.
2018-01-08Fix second-to-last gdb/testsuite/ChangeLog entry.Joel Brobecker1-2/+2
2018-01-08Relax expected output in gdb.ada/access_tagged_param.exp testJoel Brobecker2-1/+7
One of the tests in gdb.ada/access_tagged_param.exp verifies the value of the parameters being printed by GDB when stopping at a breakpoint inside procedure Pck.Inspect. In particular, one of these parameters is actually generated internally by the compiler, and does only indirectly depend on the user-level code. A recent change in AdaCore's compiler caused the code expansion to change a little bit, and as a result, the value of that parameter has changed from 2 to 3. This can be evindenced by looking at the code post expansion, using the -gnatDG command-line switch to generate the .dg files: $ gnatmake -g -gnatDG foo.adb $ vi foo.adb.dg We can see that the call to pck.inspect used to be: pck__inspect (P8b, objL => 2); With a recent version of GNAT Pro, it is now: pck__inspect (P9b, objL => 3); This change causes a spurious FAIL when running this testcase. The objL parameter being, at heart, a simple counter of the nesting level, this commit relaxes the expected output to accept any single- digit number. We could accept any decimal, but given the example program, I dout that number will reach double-digit level. If it does, we'll double-check that this is normal, and relax the expected output further. gdb/testsuite/ChangeLog: * gdb.ada/access_tagged_param.exp: Relax expected output for value of "ObjL" in "continue" to pck.inspect breakpoint test. Tested on x86_64-linux.
2018-01-08Add a description of the X86_64 assembler's .largcomm pseudo-op.Nick Clifton2-1/+16
PR 22553 * doc/c-i386.texi (i386-Directives): Document the .largecomm directive.
2018-01-07(Ada) Fix print of array using non-contiguous enumeration indexesXavier Roirand5-0/+102
Consider the following code: type Index is (Index1, Index2); Size : constant Integer := 10; for Index use (Index1 => 1, Index2 => Size); type Array_Index_Enum is array (Index) of Integer; my_table : Array_Index_Enum :=(others => 42); When compiling the code above with a compiler where the GNAT encodings are turned off (which can be temporarily emulated by using the compiler switch -fgnat-encodings=minimal), printing this table in gdb leads to: (gdb) p my_table $1 = (42, 42, 4203344, 10, -8320, 32767, 4203465, 0, 0, 0) The displayed content is wrong since the handling part believes that the length of the array is max index value (10) minus the first index value (1) i+ 1 = 10 which is wrong since index are not contiguous in this case. The right behavior is to detect that the array is using enumeration index hence parse the enumeration values in order to get the number of indexes in this array (2 indexes here). This patch fixes this issue and changes the output as follow: (gdb) p my_table $1 = (42, 42) gdb/ChangeLog: * ada-valprint.c (val_print_packed_array_elements): Use proper number of elements when printing an array indexed by an enumeration type. gdb/testsuite/ChangeLog (Joel Brobecker <brobecker@adacore.com>): * gdb.ada/arr_enum_idx_w_gap.exp * gdb.ada/arr_enum_idx_w_gap/foo_q418_043.adb Tested on x86_64-linux.
2018-01-08Automatic date update in version.inGDB Administrator1-1/+1
2018-01-07Remove dwarf2_cu::dwarf2_per_objfileSimon Marchi2-107/+237
This patch removes the dwarf2_per_objfile field of dwarf2_cu. It is redundant, since we can access dwarf2_per_objfile through dwarf2_per_objfile, which is guaranteed to be set. gdb/ChangeLog: * dwarf2read.c (struct dwarf2_cu) <dwarf2_per_objfile>: Remove. (dw2_get_file_names_reader): Adjust. (lookup_dwo_signatured_type): Adjust. (lookup_dwp_signatured_type): Adjust. (lookup_signatured_type): Adjust. (create_type_unit_group): Adjust. (get_type_unit_group): Adjust. (process_psymtab_comp_unit_reader): Adjust. (build_type_psymtabs_reader): Adjust. (scan_partial_symbols): Adjust. (add_partial_symbol): Adjust. (add_partial_subprogram): Adjust. (peek_die_abbrev): Adjust. (fixup_go_packaging): Adjust. (process_imported_unit_die): Adjust. (dwarf2_compute_name): Adjust. (dwarf2_physname): Adjust. (read_import_statement): Adjust. (handle_DW_AT_stmt_list): Adjust. (read_file_scope): Adjust. (read_func_scope): Adjust. (read_lexical_block_scope): Adjust. (read_call_site_scope): Adjust. (read_variable): Adjust. (dwarf2_rnglists_process): Adjust. (dwarf2_ranges_process): Adjust. (dwarf2_ranges_read): Adjust. (dwarf2_get_pc_bounds): Adjust. (dwarf2_record_block_ranges): Adjust. (dwarf2_add_field): Adjust. (dwarf2_add_member_fn): Adjust. (read_structure_type): Adjust. (process_structure_scope): Adjust. (read_enumeration_type): Adjust. (read_array_type): Adjust. (mark_common_block_symbol_computed): Adjust. (read_common_block): Adjust. (read_namespace_type): Adjust. (read_namespace): Adjust. (read_module_type): Adjust. (read_tag_pointer_type): Adjust. (read_tag_ptr_to_member_type): Adjust. (read_tag_string_type): Adjust. (read_subroutine_type): Adjust. (read_typedef): Adjust. (read_base_type): Adjust. (attr_to_dynamic_prop): Adjust. (read_subrange_type): Adjust. (read_unspecified_type): Adjust. (dwarf2_read_abbrevs): Adjust. (load_partial_dies): Adjust. (read_partial_die): Adjust. (find_partial_die): Adjust. (guess_partial_die_structure_name): Adjust. (fixup_partial_die): Adjust. (read_attribute_value): Adjust. (read_addr_index): Adjust. (read_addr_index_from_leb128): Adjust. (read_str_index): Adjust. (dwarf2_string_attr): Adjust. (get_debug_line_section): Adjust. (dwarf_decode_line_header): Adjust. (lnp_state_machine::check_line_address): Adjust. (dwarf_decode_lines_1): Adjust. (dwarf_decode_lines): Adjust. (dwarf2_start_symtab): Adjust. (var_decode_location): Adjust. (new_symbol_full): Adjust. (dwarf2_const_value_data): Adjust. (dwarf2_const_value_attr): Adjust. (dwarf2_const_value): Adjust. (die_type): Adjust. (die_containing_type): Adjust. (build_error_marker_type): Adjust. (lookup_die_type): Adjust. (guess_full_die_structure_name): Adjust. (anonymous_struct_prefix): Adjust. (determine_prefix): Adjust. (dwarf2_name): Adjust. (follow_die_ref_or_sig): Adjust. (follow_die_offset): Adjust. (follow_die_ref): Adjust. (follow_die_sig_1): Adjust. (follow_die_sig): Adjust. (get_signatured_type): Adjust. (get_DW_AT_signature_type): Adjust. (decode_locdesc): Adjust. (dwarf_decode_macros): Adjust. (cu_debug_loc_section): Adjust. (fill_in_loclist_baton): Adjust. (dwarf2_symbol_mark_computed): Adjust. (init_one_comp_unit): Don't assign dwarf2_cu::dwarf2_per_objfile. (set_die_type): Adjust.
2018-01-07Remove dwarf2_per_objfile globalSimon Marchi2-410/+836
This patch removes the global variable dwarf2_per_objfile. This global variable is set at the various entry points of dwarf2read.c (using dw2_setup), and is referred to throughout the file. Instead of passing data between functions in global variables like this one, it would be better if the functions that depend on it either received it as argument or got it from the existing arguments they receive. For example, a function receiving a reference to a dwarf2_per_cu_data can access it from dwarf2_per_cu_data::dwarf2_per_objfile. This patch has been tested on the buildbot. gdb/ChangeLog: * dwarf2read.c (struct mapped_debug_names): Add constructor. <dwarf2_per_objfile>: New field. (dwarf2_per_objfile): Remove global. (get_dwarf2_per_objfile): New function. (set_dwarf2_per_objfile): New function. (dwarf2_build_psymtabs_hard): Change objfile parameter to dwarf2_per_objfile. (abbrev_table_read_table): Add dwarf2_per_objfile parameter. (read_abbrev_offset): Likewise. (read_indirect_string): Likewise. (read_indirect_line_string): Likewise. (read_indirect_string_at_offset): Likewise. (read_indirect_string_from_dwz): Likewise. (dwarf2_find_containing_comp_unit): Change objfile parameter to dwarf2_per_objfile. (age_cached_comp_units): Add dwarf2_per_objfile parameter. (create_all_comp_units): Change objfile parameter to dwarf2_per_objfile. (create_all_type_units): Likewise. (process_queue): Add dwarf2_per_objfile parameter. (read_and_check_comp_unit_head): Likewise. (lookup_dwo_unit_in_dwp): Likewise. (get_dwp_file): Likewise. (process_cu_includes): Likewise. (struct free_dwo_file_cleanup_data): New struct. (dwarf2_has_info): Use get_dwarf2_per_objfile and set_dwarf2_per_objfile. (dwarf2_get_dwz_file): Add dwarf2_per_objfile parameter. (dw2_do_instantiate_symtab): Get dwarf2_per_objfile from context, adjust calls. (dw2_instantiate_symtab): Likewise. (dw2_get_cutu): Add dwarf2_per_objfile parameter. (dw2_get_cu): Likewise. (create_cu_from_index_list): Change objfile parameter to dwarf2_per_objfile. (create_cus_from_index_list): Get dwarf2_per_objfile from context, adjust calls. (create_cus_from_index): Likewise. (create_signatured_type_table_from_index): Change objfile parameter to dwarf2_per_objfile. (create_signatured_type_table_from_debug_names): Change objfile parameter to dwarf2_per_objfile. (create_addrmap_from_index): Likewise. (create_addrmap_from_aranges): Likewise. (dwarf2_read_index): Use get_dwarf2_per_objfile, adjust calls. (dw2_setup): Remove. (dw2_get_file_names_reader): Get dwarf2_per_objfile from context. (dw2_find_last_source_symtab): Get dwarf2_per_objfile using get_dwarf2_per_objfile. (dw2_forget_cached_source_info): Likewise. (dw2_map_symtabs_matching_filename): Likewise. (struct dw2_symtab_iterator) <index>: Remove. <dwarf2_per_objfile>: New field. (dw2_symtab_iter_init): Replace index parameter with dwarf2_per_objfile. (dw2_symtab_iter_next): Use dwarf2_per_objfile from iter. (dw2_lookup_symbol): Use get_dwarf2_per_objfile and adjust. (dw2_print_stats): Likewise. (dw2_dump): Likewise. (dw2_expand_symtabs_for_function): Likewise. (dw2_expand_all_symtabs): Likewise. (dw2_expand_symtabs_with_fullname): Likewise. (dw2_expand_marked_cus): Replace index and objfile parameters with dwarf2_per_objfile. (dw_expand_symtabs_matching_file_matcher): Add dwarf2_per_objfile parameter and adjust calls. (dw2_expand_symtabs_matching): Use get_dwarf2_per_objfile and adjust calls. (dw2_find_pc_sect_compunit_symtab): Don't call dw2_setup. (dw2_map_symbol_filenames): Use get_dwarf2_per_objfile and adjust calls. (create_cus_from_debug_names_list): Replace objfile parameter with dwarf2_per_objfile and adjust calls. (create_cus_from_debug_names): Likewise. (dwarf2_read_debug_names): Likewise. (mapped_debug_names::namei_to_name): Adjust call. (dw2_debug_names_iterator::next): Likewise. (dw2_debug_names_iterator::find_vec_in_debug_names): Likewise. (dw2_debug_names_lookup_symbol): Use get_dwarf2_per_objfile. (dw2_debug_names_dump): Likewise. (dw2_debug_names_expand_symtabs_for_function): Likewise. (dw2_debug_names_expand_symtabs_matching): Likewise. (dwarf2_initialize_objfile): Likewise. (dwarf2_build_psymtabs): Likewise. (get_abbrev_section_for_cu): Get dwarf2_per_objfile from this_cu. (error_check_comp_unit_head): Add dwarf2_per_objfile parameter. (read_and_check_comp_unit_head): Likewise. (read_abbrev_offset): Likewise. (create_debug_type_hash_table): Likewise. (create_debug_types_hash_table): Likewise. (create_all_type_units): Replace objfile parameter with dwarf2_per_objfile. (add_type_unit): Add dwarf2_per_objfile parameter. (fill_in_sig_entry_from_dwo_entry): Replace objfile parameter with dwarf2_per_objfile. (lookup_dwo_signatured_type): Get dwarf2_per_objfile from cu. (lookup_dwp_signatured_type): Likewise. (lookup_signatured_type): Likewise. (read_cutu_die_from_dwo): Likewise. (init_tu_and_read_dwo_dies): Likewise. (init_cutu_and_read_dies): Likewise. (init_cutu_and_read_dies_no_follow): Likewise. (allocate_type_unit_groups_table): Add objfile parameter. (create_type_unit_group): Use dwarf2_per_objfile from cu. (get_type_unit_group): Likewise. (process_psymtab_comp_unit): Update call. (build_type_psymtabs_reader): Use dwarf2_per_objfile from cu. (build_type_psymtabs_1): Add dwarf2_per_objfile parameter. (print_tu_stats): Likewise. (build_type_psymtab_dependencies): Use dwarf2_per_objfile passed in void* parameter. (build_type_psymtabs): Change objfile parameter to dwarf2_per_objfile. (process_skeletonless_type_unit): Use dwarf2_per_objfile passed in void* parameter. (process_skeletonless_type_units): Change objfile parameter to dwarf2_per_objfile. (set_partial_user): Likewise. (dwarf2_build_psymtabs_hard): Likewise. (read_comp_units_from_section): Likewise. (create_all_comp_units): Likewise. (scan_partial_symbols): Update calls. (add_partial_symbol): Likewise. (dwarf2_read_symtab): Use get_dwarf2_per_objfile. (maybe_queue_comp_unit): Use dwarf2_read_symtab from cu. (process_queue): Add dwarf2_per_objfile parameter. (get_compunit_symtab): Use dwarf2_per_objfile from cu. (compute_compunit_symtab_includes): Likewise. (process_cu_includes): Add dwarf2_per_objfile parameter. (process_full_comp_unit): Use dwarf2_per_objfile from cu. (process_full_type_unit): Likewise. (process_imported_unit_die): Update call. (handle_DW_AT_stmt_list): Use dwarf2_per_objfile from cu. (read_file_scope): Likewise. (allocate_dwo_file_hash_table): Add objfile parameter. (lookup_dwo_file_slot): Add dwarf2_per_objfile parameter. (create_cus_hash_table): Likewise. (create_dwp_hash_table): Likewise. (create_dwo_unit_in_dwp_v1): Likewise. (create_dwp_v2_section): Likewise. (create_dwo_unit_in_dwp_v2): Likewise. (lookup_dwo_unit_in_dwp): Likewise. (try_open_dwop_file): Likewise. (open_dwo_file): Likewise. Use dwarf2_per_objfile from cu. (open_and_init_dwo_file): Use dwarf2_per_objfile from cu, update cleanup to include a reference to dwarf2_per_objfile. (open_dwp_file): Add dwarf2_per_objfile parameter. (open_and_init_dwp_file): Likewise. (get_dwp_file): Likewise. (lookup_dwo_cutu): Use dwarf2_per_objfile from cu. (queue_and_load_all_dwo_tus): Update call. (free_dwo_file_cleanup): Use dwarf2_per_objfile from cleanup data. (dwarf2_rnglists_process): Use dwarf2_per_objfile from cu. (dwarf2_ranges_process): Likewise. (dwarf2_get_pc_bounds): Likewise. (mark_common_block_symbol_computed): Likewise. (abbrev_table_read_table): Add dwarf2_per_objfile parameter. (dwarf2_read_abbrevs): Update call. (read_partial_die): Use dwarf2_per_objfile from cu. (find_partial_die): Likewise. (fixup_partial_die): Likewise. (read_attribute_value): Likewise. (read_indirect_string_at_offset_from): Add objfile parameter. (read_indirect_string_at_offset): Add dwarf2_per_objfile parameter. (read_indirect_string_from_dwz): Add objfile parameter. (read_indirect_string): Add objfile parameter. (read_addr_index_1): Add dwarf2_per_objfile parameter. (read_addr_index): Use dwarf2_per_objfile from cu. (dwarf2_read_addr_index): Use dwarf2_per_objfile from cu, don't call dw2_setup. (read_str_index): Use dwarf2_per_objfile from cu. (get_debug_line_section): Likewise. (read_formatted_entries): Add dwarf2_per_objfile parameter. (dwarf_decode_line_header): Use dwarf2_per_objfile from cu. (new_symbol_full): Use dwarf2_per_objfile from cu. (build_error_marker_type): Likewise. (lookup_die_type): Likewise. (determine_prefix): Likewise. (follow_die_offset): Likewise. (dwarf2_fetch_die_loc_sect_off): Use get_dwarf2_per_objfile. (dwarf2_fetch_constant_bytes): Don't call dw2_setup. (dwarf2_fetch_die_type_sect_off): Likewise. (dwarf2_get_die_type): Likewise. (follow_die_sig_1): Use dwarf2_per_objfile from cu. (get_signatured_type): Likewise. (get_DW_AT_signature_type): Likewise. (dwarf_decode_macro_bytes): Add dwarf2_per_objfile parameter. (dwarf_decode_macros): Use dwarf2_per_objfile from cu. (cu_debug_loc_section): Likewise. (fill_in_loclist_baton): Likewise. (dwarf2_symbol_mark_computed): Likewise. (dwarf2_find_containing_comp_unit): Change objfile parameter to dwarf2_per_objfile. (free_cached_comp_units): Use dwarf2_per_objfile passed in void* parameter. (age_cached_comp_units): Add dwarf2_per_objfile parameter. (free_one_cached_comp_unit): Use dwarf2_per_objfile from cu. (dwarf2_free_objfile): Use get_dwarf2_per_objfile. (set_die_type): Use dwarf2_free_objfile from cu. (get_die_type_at_offset): Likewise. (dwarf2_per_objfile_free): Don't assign global variable. (debug_names) <constructor>: Add dwarf2_per_objfile parameter, update m_debugstrlookup construction. (debug_names::debug_str_lookup): Add dwarf2_per_objfile parameter. <m_dwarf2_per_objfile>: New field. <lookup>: Use m_dwarf2_per_objfile. (check_dwarf64_offsets): Add dwarf2_per_objfile parameter. (psyms_seen_size): Likewise. (write_gdbindex): Replace objfile parameter with dwarf2_per_objfile. (write_debug_names): Likewise. (write_psymtabs_to_index): Likewise. (save_gdb_index_command): Use get_dwarf2_per_objfile, update calls.
2018-01-07Replace objfile field in dwarf2_cu and dwarf2_per_cu_data with ↵Simon Marchi2-111/+220
dwarf2_per_objfile The next patch aims to remove the dwarf2_per_objfile global. In many functions, we need to find a way to get a reference to the current dwarf2_per_objfile through the objects passed in parameters. Often, we have access to a dwarf2_cu or a dwarf2_per_cu_data. These objects have a reference to the objfile, through which we can get the dwarf2_per_objfile: dwarf2_per_objfile = ((struct dwarf2_per_objfile *) objfile_data (objfile, dwarf2_objfile_data_key)); However, this is a bit cumbersome to do all over the place. It would be more logical if the dwarf2_cu and dwarf2_per_cu_data had a reference to their dwarf2_per_objfile, which would then have a reference to the objfile. It would be more in line with the object hierarchy, where dwarf2_per_objfile owns the dwarf2_per_cu_data instances. We could even remove the reference dwarf2_cu has to dwarf2_per_objfile, since we can access dwarf2_per_objfile through dwarf2_cu::per_cu. In a graphical way, references would look like this after the current patch: objfile <--- dwarf2_per_objfile <--- dwarf2_per_cu_data | ^ | | `- dwarf2_cu This patch has been tested on the buildbot. gdb/ChangeLog: * dwarf2read.c (struct dwarf2_cu) <objfile>: Remove. <dwarf2_per_objfile>: New field. (struct dwarf2_per_cu_data) <objfile>: Remove. <dwarf2_per_objfile>: New field. (create_cu_from_index_list): Assign dwarf2_per_objfile instead of objfile. (create_signatured_type_table_from_index): Likewise. (create_debug_type_hash_table): Likewise. (fill_in_sig_entry_from_dwo_entry): Likewise. (lookup_dwo_unit): Access objfile through dwarf2_per_objfile. (create_type_unit_group): Assign dwarf2_per_objfile instead of objfile. (create_partial_symtab): Access objfile through dwarf2_per_objfile. (process_psymtab_comp_unit_reader): Likewise. (read_comp_units_from_section): Likewise. (scan_partial_symbols): Likewise. (add_partial_symbol): Likewise. (add_partial_subprogram): Likewise. (peek_die_abbrev): Likewise. (fixup_go_packaging): Likewise. (process_full_comp_unit): Likewise. (process_full_type_unit): Likewise. (process_imported_unit_die): Likewise. (dwarf2_compute_name): Likewise. (dwarf2_physname): Likewise. (read_import_statement): Likewise. (create_cus_hash_table): Assign dwarf2_physname instead of objfile. (read_func_scope): Access objfile through dwarf2_per_objfile. (read_lexical_block_scope): Likewise. (read_call_site_scope): Likewise. (read_variable): Likewise. (dwarf2_rnglists_process): Likewise. (dwarf2_ranges_process): Likewise. (dwarf2_ranges_read): Likewise. (dwarf2_record_block_ranges): Likewise. (dwarf2_add_field): Likewise. (dwarf2_add_member_fn): Likewise. (read_structure_type): Likewise. (process_structure_scope): Likewise. (read_enumeration_type): Likewise. (read_array_type): Likewise. (read_common_block): Likewise. (read_namespace_type): Likewise. (read_namespace): Likewise. (read_module_type): Likewise. (read_tag_pointer_type): Likewise. (read_tag_ptr_to_member_type): Likewise. (read_tag_string_type): Likewise. (read_subroutine_type): Likewise. (read_typedef): Likewise. (read_base_type): Likewise. (attr_to_dynamic_prop): Likewise. (read_subrange_type): Likewise. (read_unspecified_type): Likewise. (load_partial_dies): Likewise. (read_partial_die): Likewise. (find_partial_die): Likewise. (guess_partial_die_structure_name): Likewise. (fixup_partial_die): Likewise. (read_attribute_value): Likewise. (read_addr_index_from_leb128): Likewise. (dwarf2_read_addr_index): Likewise. (dwarf2_string_attr): Likewise. (lnp_state_machine::check_line_address): Likewise. (dwarf_decode_lines_1): Likewise. (dwarf_decode_lines): Likewise. (dwarf2_start_symtab): Likewise. (var_decode_location): Likewise. (new_symbol_full): Likewise. (dwarf2_const_value_data): Likewise. (dwarf2_const_value_attr): Likewise. (dwarf2_const_value): Likewise. (die_type): Likewise. (die_containing_type): Likewise. (lookup_die_type): Likewise. (guess_full_die_structure_name): Likewise. (anonymous_struct_prefix): Likewise. (dwarf2_name): Likewise. (follow_die_ref_or_sig): Likewise. (follow_die_offset): Likewise. (follow_die_ref): Likewise. (dwarf2_fetch_die_loc_sect_off): Likewise. (dwarf2_fetch_constant_bytes): Likewise. (dwarf2_fetch_die_type_sect_off): Likewise. (dwarf2_get_die_type): Likewise. (follow_die_sig): Likewise. (decode_locdesc): Likewise. (dwarf2_per_cu_objfile): Likewise. (dwarf2_per_cu_text_offset): Likewise. (init_one_comp_unit): Assign dwarf2_per_objfile instead of objfile. (set_die_type): Access objfile through dwarf2_per_objfile.
2018-01-07Make parse_debug_format_options return an std::stringSimon Marchi2-11/+15
This avoid having to manually free the return value. gdb/gdbserver/ChangeLog: * server.c (parse_debug_format_options): Return std::string. (handle_monitor_command, captured_main): Adjust.
2018-01-07Replace VEC(converted_character_d) with std::vectorSimon Marchi2-19/+18
This patch changes the usage of VEC(converted_character_d) to use an std::vector instead. This allows getting rid of a cleanup. gdb/ChangeLog: * valprint.c (converted_character_d): Remove typedef. (DEF_VEC_O (converted_character_d)): Remove. (count_next_character): Use std::vector. (print_converted_chars_to_obstack): Likewise. (generic_printstr): Likewise.
2018-01-07Replace VEC(gdb_xml_value_s) with std::vectorSimon Marchi13-154/+203
This patch replaces VEC(gdb_xml_value_s), which is passed to XML visitors, with an std::vector. In order to be able to remove the cleanup in gdb_xml_parser::start_element, the gdb_xml_parser structure is made to own the value with a gdb::unique_xmalloc_ptr. This patch has been tested on the buildbot. gdb/ChangeLog: * xml-support.h (struct gdb_xml_value): Add constructor. <value>: Change type to unique_xmalloc_ptr. (gdb_xml_value_s): Remove typedef. (DEF_VEC_O (gdb_xml_value_s)): Remove. (gdb_xml_element_start_handler): Change parameter type to std::vector. (xml_find_attribute): Likewise. * xml-support.c (xml_find_attribute): Change parameter type to std::vector and adjust. (gdb_xml_values_cleanup): Remove. (gdb_xml_parser::start_element): Adjust to std::vector. (xinclude_start_include): Change paraeter type to std::vector and adjust. * btrace.c (check_xml_btrace_version): Likewise. (parse_xml_btrace_block): Likewise. (parse_xml_btrace_pt_config_cpu): Likewise. (parse_xml_btrace_pt): Likewise. (parse_xml_btrace_conf_bts): Likewise. (parse_xml_btrace_conf_pt): Likewise. * memory-map.c (memory_map_start_memory): Likewise. (memory_map_start_property): Likewise. * osdata.c (osdata_start_osdata): Likewise. (osdata_start_item): Likewise. (osdata_start_column): Likewise. * remote.c (start_thread): Likewise. * solib-aix.c (library_list_start_library): Likewise. (library_list_start_list): Likewise. * solib-svr4.c (library_list_start_library): Likewise. (svr4_library_list_start_list): Likewise. * solib-target.c (library_list_start_segment): Likewise. (library_list_start_section): Likewise. (library_list_start_library): Likewise. (library_list_start_list): Likewise. * tracepoint.c (traceframe_info_start_memory): Likewise. (traceframe_info_start_tvar): Likewise. * xml-syscall.c (syscall_start_syscall): Likewise. * xml-tdesc.c (tdesc_start_target): Likewise. (tdesc_start_feature): Likewise. (tdesc_start_reg): Likewise. (tdesc_start_union): Likewise. (tdesc_start_struct): Likewise. (tdesc_start_flags): Likewise. (tdesc_start_enum): Likewise. (tdesc_start_field): Likewise. (tdesc_start_enum_value): Likewise. (tdesc_start_vector): Likewise.
2018-01-07Remove xmethod_worker::cloneSimon Marchi4-25/+10
I think that the clone method of xmethod_worker can be removed. It is only used in find_overload_match, to clone an xmethod we want to keep. Instead, we can just std::move it out of the vector and into value_from_xmethod. value_from_xmethod creates a value that will own the xmethod_worker from that point. Other xmethod_workers left in the vector will get destroyed when the vector gets destroyed, but the chosen one will keep living inside the value struct. gdb/ChangeLog: * extension.h (struct xmethod_worker) <clone>: Remove. * python/py-xmethods.c (struct python_xmethod_worker) <clone>: Remove. (python_xmethod_worker::clone): Remove. * valops.c (find_overload_match): Use std::move instead of clone.
2018-01-07C++ify xmethod_worker, get rid of VEC(xmethod_worker_ptr)Simon Marchi10-402/+292
The initial goal of this patch was to remove the usage of VEC(xmethod_worker_ptr) and corresponding cleanups. I ended up having to C++ify the xmethod_worker code, to be able to have xmethod_workers free their data in destructors, and therefore be able to use vectors of xmethod_worker unique_ptr. The operations in extension_language_ops that act on one instance of xmethod_worker (get result type, get args type, invoke) are transformed to methods of xmethod_worker. xmethod_worker becomes an abstract base class with virtual pure methods which python_xmethod_worker implements. The only xmethod-related operation left in extension_language_ops is get_matching_xmethod_workers, which returns a list of xmethod_workers. The changes are relatively straightforward, but here are some notes on things that may raise eyebrows: - I was not really comfortable with the value_of_xmethod function. At first it looks like a simple getter, so I considered making it a method of xmethod_worker. But actually it creates a value and transfers the ownership of the xmethod_worker to it. It would be a bit weird and error-prone if calling a method on an object silently removed the ownership of the object from the caller. To reflect the behavior more accurately, I renamed it to value_from_xmethod and made it accept an rvalue-reference (so the caller knows it gives away the ownership). I noticed the backlink from xmethod_worker to its owning value was not used, so I removed it. - Some code, like get_matching_xmethod_workers, made each callee fill a new vector, which was then merged in the result vector. I think it's safe if we always pass the same vector around, and each implementation just appends to it. - The clone operation does not seem particularly useful, it is removed in the following patch. gdb/ChangeLog: * extension-priv.h (enum ext_lang_rc): Remove, move to extension.h. (struct extension_language_ops) <clone_xmethod_worker_data>: Remove. <free_xmethod_worker_data>: Remove. <get_matching_xmethod_workers>: Chance VEC to std::vector. <get_xmethod_arg_types>: Remove. <get_xmethod_result_type>: Remove. <invoke_xmethod>: Remove. * extension.c (new_xmethod_worker): Remove. (clone_xmethod_worker): Remove. (get_matching_xmethod_workers): Return void, pass std::vector by pointer. (get_xmethod_arg_types): Rename to... (xmethod_worker::get_arg_types): ... this, and adjust. (get_xmethod_result_type): Rename to... (xmethod_worker::get_result_type): ... this, and adjust. (invoke_xmethod): Remove. (free_xmethod_worker): Remove. (free_xmethod_worker_vec): Remove. * extension.h (enum ext_lang_rc): Move here from extension-priv.h. (struct xmethod_worker): Add constructor and destructor. <data>: Remove. <value>: Remove. <invoke, clone, do_get_result_type, do_get_arg_types>: New virtual pure methods. <get_arg_types, get_result_type>: New methods. (xmethod_worker_ptr): Remove typedef. (DEF_VEC_P (xmethod_worker_ptr)): Remove. (xmethod_worker_vec): Remove typedef. (xmethod_worker_up): New typedef. (invoke_xmethod): Remove. (clone_xmethod_worker): Remove. (free_xmethod_worker): Remove. (free_xmethod_worker_vec): Remove. (get_xmethod_arg_types): Remove. (get_xmethod_result_type): Remove. * valops.c (find_method_list): Use std::vector, don't use intermediate vector. (value_find_oload_method_list): Use std::vector. (find_overload_match): Use std::vector. (find_oload_champ): Use std::vector. * value.c (value_free): Use operator delete. (value_of_xmethod): Rename to... (value_from_xmethod): ... this. Don't assign xmethod_worker::value, take rvalue-reference. (result_type_of_xmethod): Adjust. (call_xmethod): Adjust. * value.h: Include extension.h. (struct xmethod_worker): Don't forward-declare. (value_of_xmethod): Rename to... (value_from_xmethod): ... this, take rvalue-reference. * python/py-xmethods.c (struct gdbpy_worker_data): Rename to... (struct python_xmethod_worker): ... this, add constructor and destructor. <invoke, clone, do_get_arg_types, do_get_result_type>: Implement. (gdbpy_free_xmethod_worker_data): Rename to... (python_xmethod_worker::~python_xmethod_worker): ... this and adjust. (gdbpy_clone_xmethod_worker_data): Rename to... (python_xmethod_worker::clone): ... this and adjust. (gdbpy_get_matching_xmethod_workers): Use std::vector, don't use temporary vector. (gdbpy_get_xmethod_arg_types): Rename to... (python_xmethod_worker::do_get_arg_types): ... this and adjust. (gdbpy_get_xmethod_result_type): Rename to... (python_xmethod_worker::do_get_result_type): ... this and adjust. (gdbpy_invoke_xmethod): Rename to... (python_xmethod_worker::invoke): ... this and adjust. (new_python_xmethod_worker): Rename to... (python_xmethod_worker::python_xmethod_worker): ... this and adjust. * python/python-internal.h (gdbpy_clone_xmethod_worker_data): Remove. (gdbpy_free_xmethod_worker_data): Remove. (gdbpy_get_matching_xmethod_workers): Use std::vector. (gdbpy_get_xmethod_arg_types): Remove. (gdbpy_get_xmethod_result_type): Remove. (gdbpy_invoke_xmethod): Remove. * python/python.c (python_extension_ops): Remove obsolete callbacks.
2018-01-07Automatic date update in version.inGDB Administrator1-1/+1
2018-01-05RISC-V: Print symbol address for jalr w/ zero offset.Jim Wilson6-0/+30
ld/ * testsuite/ld-riscv-elf/disas-jalr.d: New. * testsuite/ld-riscv-elf/disas-jalr.s: New. * testsuite/ld-riscv-elf/ld-riscv-elf.exp: Run new testcase. opcodes/ * riscv-dis.c (print_insn_args) <'s'>: Call maybe_print_address for a jalr.
2018-01-06Automatic date update in version.inGDB Administrator1-1/+1
2018-01-05RISC-V: Disable shared library support for embedded elf.Jim Wilson2-2/+15
ld/ * emulparams/elf32lriscv-defs.sh (GENERATE_SHLIB_SCRIPT): Move inside case on $target, and don't set for riscv*-elf targets. (GENERATE_PIE_SCRIPT): Likewise.
2018-01-05Fix regression: cannot start with LD_PRELOAD=libSegFault.so (PR gdb/18653#c7)Pedro Alves8-8/+141
At https://sourceware.org/bugzilla/show_bug.cgi?id=18653#c7, Andrew reports that the fix for PR gdb/18653 made GDB useless if you preload libSegFault.so, because GDB internal-errors on startup: $ LD_PRELOAD=libSegFault.so gdb src/gdb/common/signals-state-save-restore.c:64: internal-error: unexpected signal handler A problem internal to GDB has been detected, further debugging may prove unreliable. Aborted (core dumped) $ The internal error comes from the code saving the signal dispositions inherited from gdb's parent: (top-gdb) bt #0 0x000000000056b001 in internal_error(char const*, int, char const*, ...) (file=0xaf5f38 "src/gdb/common/signals-state-save-restore.c", line=64, fmt=0xaf5f18 "unexpected signal handler") at src/gdb/common/errors.c:54 #1 0x00000000005752c9 in save_original_signals_state() () at src/gdb/common/signals-state-save-restore.c:64 #2 0x00000000007425de in captured_main_1(captured_main_args*) (context=0x7fffffffd860) at src/gdb/main.c:509 #3 0x0000000000743622 in captured_main(void*) (data=0x7fffffffd860) at src/gdb/main.c:1145 During symbol reading, cannot get low and high bounds for subprogram DIE at 24065. #4 0x00000000007436f9 in gdb_main(captured_main_args*) (args=0x7fffffffd860) at src/gdb/main.c:1171 #5 0x0000000000413acd in main(int, char**) (argc=1, argv=0x7fffffffd968) at src/gdb/gdb.c:32 This commit downgrades the internal error to a warning. You'll get instead: ~~~ $ LD_PRELOAD=libSegFault.so gdb warning: Found custom handler for signal 11 (Segmentation fault) preinstalled. Some signal dispositions inherited from the environment (SIG_DFL/SIG_IGN) won't be propagated to spawned programs. GNU gdb (GDB) 8.0.50.20171213-git Copyright (C) 2017 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... (gdb) ~~~ This also moves the location where save_original_signals_state is called a bit further below (to after option processing), so that "-q" disables the warning: ~~~ $ LD_PRELOAD=libSegFault.so gdb -q (gdb) ~~~ New testcase included. gdb/ChangeLog: 2018-01-05 Pedro Alves <palves@redhat.com> PR gdb/18653 * common/signals-state-save-restore.c (save_original_signals_state): New parameter 'quiet'. Warn if we find a custom handler preinstalled, instead of internal erroring. But only warn if !quiet. * common/signals-state-save-restore.h (save_original_signals_state): New parameter 'quiet'. * main.c (captured_main_1): Move save_original_signals_state call after option handling, and pass QUIET. gdb/gdbserver/ChangeLog: 2018-01-05 Pedro Alves <palves@redhat.com> PR gdb/18653 * server.c (captured_main): Pass quiet=false to save_original_signals_state. gdb/testsuite/ChangeLog: 2018-01-05 Pedro Alves <palves@redhat.com> PR gdb/18653 * gdb.base/libsegfault.exp: New.
2018-01-05Fix gdb/spu-tdep.c build breakagePedro Alves2-1/+8
Commit de63c46b549d ("Fix regresssion(internal-error) printing subprogram argument (PR gdb/22670)") missed updating spu-tdep.c for the block_lookup_symbol interface change, resulting in: ../../binutils-gdb/gdb/spu-tdep.c: In function void spu_catch_start(objfile*): ../../binutils-gdb/gdb/spu-tdep.c:1969:59: error: cannot convert domain_enum_tag to symbol_name_match_type for argument 3 to symbol* block_lookup_symbol(const block*, const char*, symbol_name_match_type, domain_enum) sym = block_lookup_symbol (block, "main", VAR_DOMAIN); ^ gdb/ChangeLog: 2018-01-05 Pedro Alves <palves@redhat.com> * spu-tdep.c (spu_catch_start): Pass symbol_name_match_type::SEARCH_NAME to block_lookup_symbol.
2018-01-05Fix regresssion(internal-error) printing subprogram argument (PR gdb/22670)Pedro Alves19-31/+271
At <https://sourceware.org/ml/gdb-patches/2017-12/msg00298.html>, Joel wrote: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Consider the following code which first declares a tagged type (the equivalent of a class in Ada), and then a procedure which takes a pointer (access) to this type's 'Class. package Pck is type Top_T is tagged record N : Integer := 1; end record; procedure Inspect (Obj: access Top_T'Class); end Pck; Putting a breakpoint in that procedure and then running to it triggers an internal error: (gdb) break inspect (gdb) continue Breakpoint 1, pck.inspect (obj=0x63e010 /[...]/gdb/stack.c:621: internal-error: void print_frame_args(symbol*, frame_info*, int, ui_file*): Assertion `nsym != NULL' failed. What's special about this subprogram is that it takes an access to what we call a 'Class type, and for implementation reasons, the compiler adds an extra argument named "objL". If you are curious why, it allows the compiler for perform dynamic accessibility checks that are mandated by the language. If we look at the location where we get the internal error (in stack.c), we find that we are looping over the symbol of each parameter, and for each parameter, we do: /* We have to look up the symbol because arguments can have two entries (one a parameter, one a local) and the one we want is the local, which lookup_symbol will find for us. [...] nsym = lookup_symbol (SYMBOL_LINKAGE_NAME (sym), b, VAR_DOMAIN, NULL).symbol; gdb_assert (nsym != NULL); The lookup_symbol goes through the lookup structure, which means the symbol's linkage name ("objL") gets transformed into a lookup_name_info object (in block_lookup_symbol), before it gets fed to the block symbol dictionary iterators. This, in turn, triggers the symbol matching by comparing the "lookup" name which, for Ada, means among other things, lowercasing the given name to "objl". It is this transformation that causes the lookup find no matches, and therefore trip this assertion. Going back to the "offending" call to lookup_symbol in stack.c, what we are trying to do, here, is do a lookup by linkage name. So, I think what we mean to be doing is a completely literal symbol lookup, so maybe not even strcmp_iw, but actually just plain strcmp??? In the past, in practice, you could get that effect by doing a lookup using the C language. But that doesn't work, because we still end up somehow using Ada's lookup_name routine which transforms "objL". So, ideally, as I hinted before, I think what we need is a way to perform a literal lookup so that searches by linkage names like the above can be performed. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This commit fixes the problem by implementing something similar to Joel's literal idea, but with some important differences. I considered adding a symbol_name_match_type::LINKAGE and supporting searching by linkage name for any language, but the problem with that is that the dictionaries only work with SYMBOL_SEARCH_NAME, because that's what is used for hashing. We'd need separate dictionaries for hashed linkage names. So with the current symbol tables infrastructure, it's not literal linkage names that we want to pass down, but instead literal _search_ names (SYMBOL_SEARCH_NAME, etc.). However, psymbols have no overload/function parameter info in C++, so a straight strcmp doesn't work properly for C++ name matching. So what we do is be a little less aggressive then and add a new symbol_name_match_type::SEARCH_SYMBOL instead that takes as input a non-user-input search symbol, and then we skip any decoding/demangling steps and make: - Ada treat that as a verbatim match, - other languages treat it as symbol_name_match_type::FULL. This also fixes the new '"maint check-psymtabs" for Ada' testcase for me (gdb.ada/maint_with_ada.exp). I've not removed the kfail yet because Joel still sees that testcase failing with this patch. That'll be fixed in follow up patches. gdb/ChangeLog: 2018-01-05 Pedro Alves <palves@redhat.com> PR gdb/22670 * ada-lang.c (literal_symbol_name_matcher): New function. (ada_get_symbol_name_matcher): Use it for symbol_name_match_type::SEARCH_NAME. * block.c (block_lookup_symbol): New parameter 'match_type'. Pass it down instead of assuming symbol_name_match_type::FULL. * block.h (block_lookup_symbol): New parameter 'match_type'. * c-valprint.c (print_unpacked_pointer): Use lookup_symbol_search_name instead of lookup_symbol. * compile/compile-object-load.c (get_out_value_type): Pass down symbol_name_match_type::SEARCH_NAME. * cp-namespace.c (cp_basic_lookup_symbol): Pass down symbol_name_match_type::FULL. * cp-support.c (cp_get_symbol_name_matcher): Handle symbol_name_match_type::SEARCH_NAME. * infrun.c (insert_exception_resume_breakpoint): Use lookup_symbol_search_name. * p-valprint.c (pascal_val_print): Use lookup_symbol_search_name. * psymtab.c (maintenance_check_psymtabs): Use symbol_name_match_type::SEARCH_NAME and SYMBOL_SEARCH_NAME. * stack.c (print_frame_args): Use lookup_symbol_search_name and SYMBOL_SEARCH_NAME. * symtab.c (lookup_local_symbol): Don't demangle the lookup name if symbol_name_match_type::SEARCH_NAME. (lookup_symbol_in_language): Pass down symbol_name_match_type::FULL. (lookup_symbol_search_name): New. (lookup_language_this): Pass down symbol_name_match_type::SEARCH_NAME. (lookup_symbol_aux, lookup_local_symbol): New parameter 'match_type'. Pass it down. * symtab.h (symbol_name_match_type::SEARCH_NAME): New enumerator. (lookup_symbol_search_name): New declaration. (lookup_symbol_in_block): New 'match_type' parameter. gdb/testsuite/ChangeLog: 2018-01-05 Joel Brobecker <brobecker@adacore.com> PR gdb/22670 * gdb.ada/access_tagged_param.exp: New file. * gdb.ada/access_tagged_param/foo.adb: New file.
2018-01-05Fix gdb.ada/info_addr_mixed_case.exp (PR gdb/22670)Pedro Alves4-32/+42
The comments about mixed case in the testcase are actually a red herring. The problem here is that we'd get to ada_lookup_encoded_symbol with "my_table", which wraps the looked up name in "<>"s to force a verbatim match, and that in turn disables wild matching. Fix this by swapping around the internals of ada_lookup_encoded_symbol and ada_lookup_symbol, thus avoiding the encoding and verbatim-wrapping in the ada_lookup_symbol case, the case that starts with a user-provided lookup name. Ada encoding is still done of course, in the ada_lookup_name_info ctor. This could be also seen as avoiding the double-encoding problem in a different way. gdb/ChangeLog: 2018-01-05 Pedro Alves <palves@redhat.com> PR gdb/22670 * ada-lang.c (ada_lookup_encoded_symbol): Reimplement in terms of ada_lookup_symbol. (ada_lookup_symbol): Reimplement in terms of ada_lookup_symbol_list, bits factored out from ada_lookup_encoded_symbol. gdb/testsuite/ChangeLog: 2018-01-05 Pedro Alves <palves@redhat.com> PR gdb/22670 * gdb.ada/info_addr_mixed_case.exp: Remove kfail. Extend test to exercise lower case too, and to exercise both full matching and wild matching.
2018-01-05(Ada) problem printing renaming which references a subprogram parameterJoel Brobecker9-2/+169
Consider the following code, which creates a local variable B which is a renaming whose expression references a subprogram parameter: procedure Flip (Bits : in out Bits_Type; I : Natural) is begin declare B : Boolean renames Bits (I); begin B := not B; -- BREAK end; end Flip; Trying to print the value of B when at the "BREAK" line currently does not work: (gdb) p b Could not find i What happens is the following: For the renaming, GNAT generates a variable whose name is encoded as follow: b___XR_bits___XEXSi GDB properly detects that variable, determines that, to compute the variable's value, we start from the symbol "Bits", which we then have to subscript (XS) using 'i' as the index. The error occurs while trying to find 'i'. This is because we forgot to pass the block in the call to ada_lookup_encoded_symbol, which this patch fixes. gdb/ChangeLog: * ada-exp.y (write_object_renaming): When subscripting an array using a symbol as the index, pass the block in call to ada_lookup_encoded_symbol when looking that symbol up. gdb/testsuite/ChangeLog: * gdb.ada/rename_subscript_param: New testcase. Tested on x86_64-linux. Note: This requires the following GCC patch: | 2017-04-25 Pierre-Marie de Rodat <derodat@adacore.com> | | * exp_dbug.adb: In Debug_Renaming_Declaration, | when dealing with indexed component, accept to produce a renaming | symbol when the index is an IN parameter or when it is a name | defined in an outer scope.
2018-01-05(Ada) Fix Length attribute on array accessJerome Guitton7-1/+166
Consider the following variable "Indexed_By_Enum", declared as an access to an array whose index type is an enumerated type whose underlying values have "gaps": type Enum_With_Gaps is (LIT0, LIT1, LIT2, LIT3, LIT4); for Enum_With_Gaps use (LIT0 => 3, LIT1 => 5, LIT2 => 8, LIT3 => 13, LIT4 => 21); for Enum_With_Gaps'size use 16; type MyWord is range 0 .. 16#FFFF# ; for MyWord'Size use 16; type AR is array (Enum_With_Gaps range <>) of MyWord; type AR_Access is access AR; Indexed_By_Enum : AR_Access := new AR'(LIT1 => 1, LIT2 => 43, LIT3 => 42, LIT4 => 41); Trying to print the length (number of elements) of this array using the 'Length attribute does not work: (gdb) print indexed_by_enum'length 'POS only defined on discrete types The problem occurs while trying to get the array's index type. It was using TYPE_INDEX_TYPE for that. It does not work for Ada arrays in general; use ada_index_type instead. gdb/ChangeLog: * ada-lang.c (ada_array_length): Use ada_index_type instead of TYPE_INDEX_TYPE. gdb/testsuite/ChangeLog: * gdb.ada/arr_acc_idx_w_gap: New testcase. Tested on x86_64-linux.
2018-01-05memory error printing component of record from convenience variableJoel Brobecker7-2/+126
Consider the following situation Ada code: type Kind_T is (One, Two, Three); type Time_Set_T is array (Kind_T) of Integer; type T is record Started : Time_Set_T; end record; Null_T : constant T := (Started => (others => 0)); My_Item : Pck.T := Pck.Null_T; Trying to print the value of My_Item.Started is no problem: (gdb) p item.started $1 = (0, 0, 0) However, if you save My_Item into a convenience variable first, and then try to print a component of that record, you get an unexpected memory error, instead of getting the same result. For instance: (gdb) set variable $item := item (gdb) p $item.started Cannot access memory at address 0x0 The issue occurs when, after we extracted the component from the convenience variable, we next try to "fix" it (which is ada-lang speak for resolving the type into a static type). This is done in ada_to_fixed_value, which delegates to ada_to_fixed_value_create via: val = ada_to_fixed_value_create (value_type (val), value_address (val), val); And looking at ada_to_fixed_value_create, we see that: struct type *type = ada_to_fixed_type (type0, 0, address, NULL, 1); if (type == type0 && val0 != NULL) return val0; else return value_from_contents_and_address (type, 0, address); The part that interests us, in this case, is the "else" branch, where we obviously make the implicit assumption that our object has an address, which is not true, in this case, because we are actually dealing with a convenience variable. This patch plugs that hole by adding special handing for situations where val does not live in memory. In that case, we just create a not_lval value using val's contents. gdb/ChangeLog: * ada-lang.c (ada_to_fixed_value_create): Add handling of the case where VALUE_LVAL (val0) is not lval_memory. gdb/testsuite/ChangeLog: * gdb.ada/convvar_comp: New testcase. Tested on x86_64-linux.
2018-01-05fix date of latest gdb/ChangeLog entryJoel Brobecker1-1/+1
2018-01-04Fix email address in latest gdb/testsuite/ChangeLog entryJoel Brobecker1-1/+1
2018-01-04(Ada) Remove printing of array's first index when unneededXavier Roirand5-0/+20
Consider the following code: type Table is array (Character) of Natural; My_Table : Table := (others => 4874); Printing this table in gdb leads to: (gdb) p my_table $1 = ('["00"]' => 4874 <repeats 256 times>) In this case, the index of the first element in this array is also the first element of the index type (character type). Similar to what we do we enumeration types, we do not need to print the index of the first element when printing the array. This patch fixes this issue and changes the output as follow: (gdb) p my_table $1 = (4874 <repeats 256 times>) gdb/ChangeLog: * ada-valprint.c (print_optional_low_bound): Handle character-indexed array printing like boolean-indexed array printing. gdb/testuite/ChangeLog: * testsuite/gdb.ada/array_char_idx/pck.ads (Table): New type. (My_Table): New global variable. * testsuite/gdb.ada/array_char_idx.exp: Add test. Tested on x86_64-linux.
2018-01-05Update NEWS post GDB 8.1 branch creation.Joel Brobecker2-1/+9
gdb/ChangeLog: * NEWS: Create a new section for the next release branch. Rename the section of the current branch, now that it has been cut.
2018-01-05Bump version to 8.1.50.DATE-git.Joel Brobecker2-1/+6
Now that the GDB 8.1 branch has been created, we can bump the version number. gdb/ChangeLog: GDB 8.1 branch created (5219ac6237c272b938c28517bf371429260c71e7): * version.in: Bump version to 8.1.50.DATE-git.
2018-01-05Automatic date update in version.ingdb-8.1-branchpointGDB Administrator1-1/+1
2018-01-04RISC-V: Add 2 missing privileged registers.Jim Wilson5-28/+48
gas/ * testsuite/gas/riscv/priv-reg.s: Add missing stval and mtval. * testsuite/gas/riscv/priv-reg.d: Likewise. include/ * opcode/riscv-opc.h (CSR_SBADADDR): Rename to CSR_STVAL. Rename DECLARE_CSR entry. Add alias to map sbadaddr to CSR_STVAL. (CSR_MBADADDR): Rename to CSR_MTVAL. Rename DECLARE_CSR entry. Add alias to map mbadaddr to CSR_MTVAL.
2018-01-04gdb.ada/maint_with_ada.exp: New testcaseJoel Brobecker5-0/+125
This commit adds a new testcase testing the "check-psymtabs" and "check-symtabs" maintenance commands. The "maintenance check-psymtabs" commands is currently known to produce some errors. While the situation was admetedly made worse by the following patch... commit b5ec771e60c1a0863e51eb491c85c674097e9e13 Date: Wed Nov 8 14:22:32 2017 +0000 Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching ... hence the reference to PR gdb/22670, the command was already spotting one inconsistency prior to it: (gdb) maintenance check-psymtabs Global symbol `interfaces__cS' only found in /[...]/b~var_arr_typedef.adb psymtab For now, the "check-psymtab" test is KFAIL-ed. gdb/testsuite/ChangeLog: PR gdb/22670 * gdb.ada/maint_with_ada: New testcase. Tested on x86_64-linux.
2018-01-04Add new gdb.ada/bp_c_mixed_case testcase for PR gdb/22670Joel Brobecker4-0/+99
This patch adds a new testcase to demonstrate a regression introduced by: commit b5ec771e60c1a0863e51eb491c85c674097e9e13 Date: Wed Nov 8 14:22:32 2017 +0000 Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching The purpose of the testcase is to verify that a user can insert a breakpoint on a C function while debugging Ada, even if the name of the function includes uppercase letters, requiring us to use Ada's "<...>" notation to tell the GDB that the symbol name should be looked up verbatim. As of the commit above, GDB is no longer finding the function: (gdb) break <MixedCaseFunc> Function "<MixedCaseFunc>" not defined. Make breakpoint pending on future shared library load? (y or [n]) Before the patch, the breakpoint was inserted without problem. gdb/testsuite/ChangeLog: PR gdb/22670 * gdb.ada/bp_c_mixed_case: New testcase. Tested on x86_64-linux; generates a KPASS before the regression was introduced, and now generates a KFAIL.
2018-01-04Add "complete break ada" test to gdb.ada/complete.expJoel Brobecker2-0/+26
This patch adds a new test to demonstrate a regression introduced by: commit b5ec771e60c1a0863e51eb491c85c674097e9e13 Date: Wed Nov 8 14:22:32 2017 +0000 Subject: Introduce lookup_name_info and generalize Ada's FULL/WILD name matching The original purpose of the new test is to exercise the "complete" command with an expression for which a large number of matches are returned and to verify that each match returned is a plausible match. In this particular case, the commit above causes GDB to generate additional matches which should in fact not appear in the list (internally generated symbols, or symbols that should be enclosed between "<...>"). These extraneous entries are easy to spot, because they have uppercase characters, such as: break ada__stringsS break ada__strings__R11s [etc] For now, the new test is KFAIL'ed, to avoid generating a new FAIL while we work on fixing that regression. gdb/testsuite/ChangeLog: PR gdb/22670 * gdb.ada/complete.exp: Add "complete break ada" test. Tested on x86_64-linux with GDB built before and after the patch that caused the regression (b5ec771e60c1a0863e51eb491c85c674097e9e13). The test passes before the regression, and generates a KFAIL after.
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