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2018-03-03Add a new debug knob for the FreeBSD native target.John Baldwin2-0/+10
For now this just logs information about the state of the current LWP for each STOPPED event in fbsd_wait(). gdb/ChangeLog: * NEWS (Changes since GDB 8.1): Add "set/show debug fbsd-nat". * fbsd-nat.c (debug_fbsd_nat): New variable. (show_fbsd_nat_debug): New function. (fbsd_wait): Log LWP info if "debug_fbsd_nat" is enabled. (_initialize_fbsd_nat): Add "fbsd-nat" debug boolean command. gdb/doc/ChangeLog: * gdb.texinfo (Debugging Output): Document "set/show debug fbsd-nat".
2018-02-19gdb/doc: Additional information about 'info line'Andrew Burgess2-6/+18
Extend the documentation of 'info line' command to: 1. Make 'info line' with no argument more obvious, and make it clearer what this does. 2. Cover what happens when a secod 'info line' with no argument is issued. 3. Extend the example output for 'info line ...' to include symbolic addresses. gdb/doc/ChangeLog: * gdb.texinfo (Machine Code): Additional information about "info line" command.
2018-01-31(Ada) Add gdb-mi support for stopping at start of exception handler.Xavier Roirand1-0/+44
Following my previous commit which add support for stopping at start of exception handler, this commit adds required gdb-mi support for this feature. gdb/ChangeLog: * mi/mi-cmd-catch.c (mi_cmd_catch_handlers): New function. * mi/mi-cmds.c (mi_cmds): Add catch-handlers command. * mi/mi-cmds.h (mi_cmd_catch_handlers): Add external declaration. * NEWS: Document "-catch-handlers" command. gdb/doc/ChangeLog: * gdb.texinfo (Ada Exception gdb/mi Catchpoints): Add documentation for new "-catch-handlers" command. gdb/testsuite/ChangeLog: * gdb.ada/mi_catch_ex_hand.exp: New testcase. * gdb.ada/mi_catch_ex_hand/foo.adb: New file. Tested on x86_64-linux.
2018-01-15Fix gdb.texinfo moreSzabolcs Nagy2-0/+5
Add incorrectly removed @pindex back. gdb/doc/ChangeLog: * gdb.texinfo (gdb-add-index man): Add pindex.
2018-01-15Fix gdb.texinfo for old makeinfo (again)Szabolcs Nagy2-4/+8
With old makeinfo (version 4.13) the changes introduced in commit ba643918cf869fa0d064d733f69b453b6fe642ea Author: Sergio Durigan Junior <sergiodj@redhat.com> Install and generate docs for gdb-add-index fail to build with gdb/doc/gdb.texinfo:2498: warning: `.' or `,' must follow @xref, not `@'. gdb/doc/gdb.texinfo:2517: warning: `.' or `,' must follow @xref, not `@'. gdb/doc/gdb.texinfo:43443: Node `gdb-add-index man' requires a sectioning command (e.g., @unnumberedsubsec). gdb/doc/gdb.texinfo:43443: `gdb-add-index man' has no Up field (perhaps incorrect sectioning?). gdb/doc/gdb.texinfo:43350: Next field of node `gdbinit man' not pointed to (perhaps incorrect sectioning?). gdb/doc/gdb.texinfo:43443: This node (gdb-add-index man) has the bad Prev. This patch fixes the warnings too. gdb/doc/ChangeLog: * gdb.texinfo (set cwd): Add period. (gdb-add-index man): Move anchor.
2018-01-12Install and generate docs for gdb-add-indexSergio Durigan Junior3-1/+86
The "gdb-add-index" script has been resurrected on: commit caf26be91a584ef141ac5d3cb31007731af8b8e3 Author: Samuel Bronson <naesten@gmail.com> Date: Fri Nov 15 16:09:33 2013 -0500 Resurrect gdb-add-index as a contrib script However, for some reason (I couldn't find it in the archives), only the script has been checked-in; the Makefile parts responsible for installing it in the system were left out. This commit fixes that, by also resurrecting the Makefile and documentation bits. This commit is part of our effort to upstream the local Fedora GDB changes. With this commit, we'll only carry a very small Fedora-specific modification to the script. gdb/ChangeLog: 2017-01-12 Tom Tromey <tom@tromey.com> Sergio Durigan Junior <sergiodj@redhat.com> * Makefile.in (install-only): Install gdb-add-index. gdb/doc/ChangeLog: 2017-01-12 Tom Tromey <tom@tromey.com> Sergio Durigan Junior <sergiodj@redhat.com> * gdb.texinfo (Index Files): Mention gdb-add-index. (gdb-add-index man): New section. * Makefile.in (gdb-add-index.1): New rule to generate manpage from gdb.texinfo.
2018-01-11Fix gdb.texinfo for old makeinfoSzabolcs Nagy2-1/+5
With old makeinfo (version 4.13) the changes introduced in commit 2d97a5d9d33aea87c3bd02fd1fa417f5d4e1fa05 Author: John Baldwin <jhb@FreeBSD.org> Document support for 'info proc' on FreeBSD. fail to build. gdb/doc/ChangeLog: * gdb.texinfo (pwd): Fix whitespace.
2018-01-09Document support for 'info proc' on FreeBSD.John Baldwin2-32/+53
Since the 'info proc' support on FreeBSD does not use /proc, reword the documentation for 'info proc' to not assume /proc. This includes renaming the node to 'Process Information' and suggesting that additional process information can be queried via different OS-specific interfaces. This is also cleans up the description of 'info proc' support for core files a bit as /proc is not used for core file support on any current platform. gdb/ChangeLog: * NEWS: Document that 'info proc' now works on FreeBSD. gdb/doc/ChangeLog: * gdb.texinfo (pwd): Update cross-reference for Process Information node and remove explicit /proc reference. (Native): Rename subsection from SVR4 Process Information to Process Information. (Process Information): Reword introduction to be less /proc centric. Document support for "info proc" on FreeBSD.
2018-01-03(Ada) New command to stop at start of exception handler.Xavier Roirand2-0/+25
When using gdb for debugging Ada source code, there are several catchpoint types you can define in order to stop upon certain conditions. Let's use this small example: procedure Foo is begin begin raise Constraint_Error; exception when Program_Error => null; when Constraint_Error => null; when others => null; end; end Foo; One can stop when the exception is being raised by using the exception catchpoint like below: (gdb) catch exception Catchpoint 1: all Ada exceptions (gdb) In that case, when running Foo, gdb will stop at the line where the exception was raised: begin >>> raise Constraint_Error; exception This patch introduces new type of catchpoint, when the user wants to stop at the location of the exception handling. Imagine we want to stop on any exception handled by the program, we can do: (gdb) catch handlers Catchpoint 1: all Ada exceptions handlers (gdb) r Starting program: /tmp/foo By doing so, when running Foo, gdb will stop here: Catchpoint 1, exception at 0x000000000040255a in foo () at foo.adb:25 25 when Constraint_Error => (gdb) It is also possible to stop when the Constraint_Error exception is being handled in this program. With this patch, we can use: (gdb) catch handlers Constraint_Error Catchpoint 1: `Constraint_Error' Ada exception handlers (gdb) Like for other catchpoint, you can set a condition when adding a catchpoint on exception handlers. Here the handlers catchpoint checks Global_Var: (gdb) catch handlers Constraint_Error if Global_Var /= 0 gdb/ChangeLog: * ada-lang.h (ada_exception_catchpoint_kind) <ada_catch_handlers>: Add field. * ada-lang.c (struct exception_support_info) <catch_handlers_sym>: Add field. (default_exception_support_info) <catch_handlers_sym>: Add field. (exception_support_info_fallback) <catch_handlers_sym>: Add field. (ada_exception_name_addr_1): Add "catch handlers" handling. (ada_exception_catchpoint_cond_string) <ex>: New parameter. Update all callers. (create_excep_cond_exprs) <ex>: Add parameter. (re_set_exception): Update create_excep_cond_exprs call. (print_it_exception, print_one_exception, print_mention_exception) (print_recreate_exception): Add "catch handler" handling. (allocate_location_catch_handlers, re_set_catch_handlers) (check_status_catch_handlers, print_it_catch_handlers) (print_one_catch_handlers, print_mention_catch_handlers) (print_recreate_catch_handlers): New function. (catch_handlers_breakpoint_ops): New variable. (catch_ada_exception_command_split) <is_catch_handlers_cmd>: Add parameter. Add "catch handler" handling. (ada_exception_sym_name, ada_exception_breakpoint_ops): Add "catch handler" handling. (ada_exception_catchpoint_cond_string): Add "catch handler" handling. (create_ada_exception_catchpoint): Update create_excep_cond_exprs call. (catch_ada_handlers_command): New function. (initialize_ada_catchpoint_ops): Initialize "catch handlers" operations structure. (_initialize_ada_language): Add "catch handlers" command entry. * NEWS: Document "catch handlers" feature. gdb/doc/ChangeLog: * gdb.texinfo (Set Catchpoints): Add documentation for new "catch handlers" action. gdb/testsuite/ChangeLog: * gdb.ada/excep_handle.exp: New testcase. * gdb.ada/excep_handle/foo.adb: New file. * gdb.ada/excep_handle/pck.ads: New file. Tested on x86_64-linux.
2018-01-02Update copyright year range in all GDB filesJoel Brobecker15-19/+19
gdb/ChangeLog: Update copyright year range in all GDB files
2017-12-27tdesc: handle arbitrary strings in tdesc_register_in_reggroup_pStafford Horne2-4/+12
tdesc_register_in_reggroup_p in now able to handle arbitrary groups. This is useful when groups are created while the target descriptor file is received from the remote. This can be the case of a soft core target processor where registers/groups can change. gdb/ChangeLog: yyyy-mm-dd Franck Jullien <franck.jullien@gmail.com> Stafford Horne <shorne@gmail.com> * target-descriptions.c (tdesc_register_in_reggroup_p): Support arbitrary strings. (tdesc_use_registers): Add logic to register new reggroups. (tdesc_reg::group): Update comment to indicate we allow arbitrary strings. * NEWS (Changes since GDB 8.0): Announce that GDB supports arbitrary reggroups. gdb/testsuite/ChangeLog: yyyy-mm-dd Stafford Horne <shorne@gmail.com> * gdb.xml/extra-regs.xml: Add example foo reggroup. * gdb.xml/tdesc-regs.exp: Add test to check for foo reggroup. gdb/doc/ChangeLog: yyyy-mm-dd Stafford Horne <shorne@gmail.com> * gdb.texinfo (Target Description Format): Explain that arbitrary strings are now allowed for register groups.
2017-12-27reggroups: Add test and docs for `info reg $reggroup` featureStafford Horne2-0/+9
Until now this feature has existed but was not documented. Adding docs and tests. gdb/ChangeLog: yyyy-mm-dd Stafford Horne <shorne@gmail.com> * infcmd.c (_initialize_infcmd): Add help for info reg $reggroup and info all-registers $reggroup feature. gdb/doc/ChangeLog: yyyy-mm-dd Stafford Horne <shorne@gmail.com> * gdb.texinfo (Registers): Document info reg $reggroup feature. gdb/testsuite/ChangeLog: yyyy-mm-dd Stafford Horne <shorne@gmail.com> * gdb.base/reggroups.c: New file. * gdb.base/reggroups.exp: New file.
2017-12-15Implement pahole-like 'ptype /o' optionSergio Durigan Junior2-0/+129
This commit implements the pahole-like '/o' option for 'ptype', which prints the offsets and sizes of struct fields, reporting whenever there is a hole found. The output is heavily based on pahole(1), with a few modifications here and there to adjust it to our reality. Here's an example: /* offset | size */ type = struct wer : public tuv { public: /* 32 | 24 */ struct tyu { /* 32:31 | 4 */ int a1 : 1; /* 32:28 | 4 */ int a2 : 3; /* 32: 5 | 4 */ int a3 : 23; /* 35: 3 | 1 */ char a4 : 2; /* XXX 3-bit hole */ /* XXX 4-byte hole */ /* 40 | 8 */ int64_t a5; /* 48:27 | 4 */ int a6 : 5; /* 48:56 | 8 */ int64_t a7 : 3; /* total size (bytes): 24 */ } a1; /* total size (bytes): 56 */ } A big part of this patch handles the formatting logic of 'ptype', which is a bit messy. The code to handle bitfield offsets, however, took some time to craft. My thanks to Pedro Alves for figuring things out and pointing me to the right direction, as well as coming up with a way to inspect the layout of structs with bitfields (see testcase for comments). After many discussions both on IRC and at the mailing list, I tried to implement printing vtables and inherited classes. Unfortunately the code grew too complex and there were still a few corner cases failing so I had to drop the attempt. This should be implemented in a future patch. This patch is the start of a long-term work I'll do to flush the local patches we carry for Fedora GDB. In this specific case, I'm aiming at upstreaming the feature implemented by the 'pahole.py' script that is shipped with Fedora GDB: <https://src.fedoraproject.org/rpms/gdb/blob/master/f/gdb-archer.patch#_311> This has been regression-tested on the BuildBot. There's a new testcase for it, along with an update to the documentation. I also thought it was worth mentioning this feature in the NEWS file. gdb/ChangeLog: 2017-12-15 Sergio Durigan Junior <sergiodj@redhat.com> Pedro Alves <palves@redhat.com> PR cli/16224 * NEWS (Changes since GDB 8.0): Mention new '/o' flag. * c-typeprint.c (OFFSET_SPC_LEN): New define. (c_type_print_varspec_prefix): New argument 'struct print_offset_data *'. (c_type_print_base_1): New function and prototype. (c_print_type_1): New function, with code from 'c_print_type'. (c_print_type): Use 'c_print_type_1'. (c_type_print_varspec_prefix): New argument 'struct print_offset_data *'. Use it. Call 'c_type_print_base_1' instead of 'c_print_type_base'. (print_spaces_filtered_with_print_options): New function. (output_access_specifier): Take new argument FLAGS. Modify function to call 'print_spaces_filtered_with_print_options'. (c_print_type_vtable_offset_marker): New function. (c_print_type_union_field_offset): New function. (c_print_type_struct_field_offset): New function. (c_print_type_no_offsets): New function. (c_type_print_base_struct_union): New argument 'struct print_offset_data *'. Print offsets and sizes for struct/union/class fields. * typeprint.c (const struct type_print_options type_print_raw_options): Initialize 'print_offsets'. (static struct type_print_options default_ptype_flags): Likewise. (struct print_offset_data print_offset_default_data): New variable. (whatis_exp): Handle '/o' option. (_initialize_typeprint): Add '/o' flag to ptype's help. * typeprint.h (struct print_offset_data): New struct. (struct type_print_options) <print_offsets>: New field. gdb/testsuite/ChangeLog: 2017-12-15 Sergio Durigan Junior <sergiodj@redhat.com> PR cli/16224 * gdb.base/ptype-offsets.cc: New file. * gdb.base/ptype-offsets.exp: New file. gdb/doc/ChangeLog: 2017-12-15 Sergio Durigan Junior <sergiodj@redhat.com> PR cli/16224 * gdb.texinfo (ptype): Add documentation for new flag '/o'.
2017-12-13python: Add qualified parameter to gdb.BreakpointSimon Marchi2-3/+15
This patch adds the possibility to pass a qualified=True|False parameter when creating a breakpoint in Python. It is equivalent to using -qualified in a linespec. The parameter actually accepts any Python value, and converts it to boolean using Python's standard rules for that (https://docs.python.org/3/library/stdtypes.html#truth). Unlike the -source/-line/-function/-label parameters, it is possible to use -qualified with a "normal" (non-explicit) linespec. Therefore, it is possible (unlike these other parameters) to use this new parameter along with the spec parameter. I updated the py-breakpoint.exp test. To be able to test multiple locations using a namespace, I had to switch the test case to compile as C++. If we really wanted to, we could run it as both C and C++, but omit the C++-specific parts when running it as C. gdb/ChangeLog: * location.h (string_to_event_location): Add match_type parameter. * location.c (string_to_event_location): Likewise. * python/py-breakpoint.c (bppy_init): Handle qualified parameter. gdb/doc/ChangeLog: * python.texi (Manipulating breakpoints using Python): Document qualified parameter to gdb.Breakpoint. gdb/testsuite/ChangeLog: * gdb.python/py-breakpoint.c (foo_ns::multiply): New function. * gdb.python/py-breakpoint.exp: Compile the test case as c++, call test_bkpt_qualified. (test_bkpt_qualified): New proc.
2017-12-13python doc: Rework Breakpoint.__init__ docSimon Marchi2-24/+48
I find the documentation of the gdb.Breakpoint constructor hard to read and not very informative, especially since we have added the new linespec parameters. There are multiple problems (some are subjective): - It's not clear that you should use either the spec string or the explicit arguments, not both. - It's not clear what combination of parameters you can use. - The big block of text describing the arguments is hard to read. - Currently, it seems like the "spec" argument is mandatory, even though it is not (if you use explicit linespec). - The square bracket nesting [arg1 [, arg2[, arg3]]] makes it seems like if you specify arg3, you must specify arg1 and arg2 (it's not the case here). This patch tries to address these problems. gdb/doc/ChangeLog: * python.texi (Manipulating breakpoints using Python): Split doc of Breakpoint.__init__ in two, split text in multiple paragraphs, don't nest parameter square brackets.
2017-12-12gdb: Add OpenRISC or1k and or1knd target supportFranck Jullien2-0/+54
This patch prepares the current GDB port of the OpenRISC processor from https://github.com/openrisc/binutils-gdb for upstream merging. Testing has been done with a cgen sim provided in a separate patch. This has been tested with 2 toolchains. GCC [1] 5.4.0 from the OpenRISC project with Newlib [2] and GCC 5.4.0 with Musl [3] 1.1.4. It supports or1knd (no delay slot target). The default target is or1k (with delay slot). You can change the target arch with: (gdb) set architecture or1knd The target architecture is assumed to be or1knd [1] https://github.com/openrisc/or1k-gcc [2] https://github.com/openrisc/newlib [3] https://github.com/openrisc/musl-cross gdb/doc/ChangeLog: 2017-12-12 Stafford Horne <shorne@gmail.com> Stefan Wallentowitz <stefan@wallentowitz.de> Franck Jullien <franck.jullien@gmail.com> Jeremy Bennett <jeremy.bennett@embecosm.com> * gdb.texinfo: Add OpenRISC documentation. gdb/ChangeLog: 2017-12-12 Stafford Horne <shorne@gmail.com> Stefan Wallentowitz <stefan@wallentowitz.de> Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Franck Jullien <franck.jullien@gmail.com> Jeremy Bennett <jeremy.bennett@embecosm.com> * configure.tgt: Add targets for or1k and or1knd. * or1k-tdep.c: New file. * or1k-tdep.h: New file. * features/Makefile: Add or1k.xml to build. * features/or1k.xml: New file. * features/or1k-core.xml: New file. * features/or1k.c: Generated.
2017-12-08DWARF-5: .debug_names index producerJan Kratochvil2-5/+23
This adds a new "-dwarf-5" switch to "save gdb-index" that makes it generate index files with DWARF-5 .debug_names/.debug_str sections instead of GDB's own .gdb_index. We should probably add a command line option to contrib/gdb-add-index.sh (incl. cc-with-tweaks.sh) for the new -dwarf-5 GDB option, and a new target board to make it more convenient to exercise this. To be done later. gdb/ChangeLog 2017-12-08 Jan Kratochvil <jan.kratochvil@redhat.com> Pedro Alves <palves@redhat.com> * contrib/gdb-add-index.sh (index): Rename to ... (index4): ... here. (index5, debugstr, debugstrmerge, debugstrerr): New variables. Support also .debug_names and .debug_str. * dwarf2read.c: Include cmath, set, list. (INDEX_SUFFIX): Rename to ... (INDEX4_SUFFIX): ... here. (INDEX5_SUFFIX, DEBUG_STR_SUFFIX): New. (file_write(FILE *, const void *, size_t)): New. (file_write(FILE *, const std::vector<Elem, Alloc> &)): New. (data_buf::append_unsigned_leb128, data_buf::empty): New. (data_buf::file_write): Use ::file_write. (data_buf::c_str, dwarf5_djb_hash, debug_names) (check_dwarf64_offsets): New. (psyms_seen_size, write_gdbindex): New from write_psymtabs_to_index code. (dwarf5_gdb_augmentation, write_debug_names, assert_file_size) (enum dw_index_kind): New. (write_psymtabs_to_index): New parameter index_kind. Support filename_str and out_file_str. Move code to write_gdbindex, possibly call write_debug_names. (save_gdb_index_command): New parameter -dwarf-5. (_initialize_dwarf2_read): Document the new parameter -dwarf-5. gdb/doc/ChangeLog 2017-12-08 Jan Kratochvil <jan.kratochvil@redhat.com> * gdb.texinfo (Index Files): Document .debug_names and -dwarf-5. -- gdb/contrib/gdb-add-index.sh | 53 ++ gdb/doc/gdb.texinfo | 24 + gdb/dwarf2read.c | 919 ++++++++++++++++++++++++++++++++++++++++-- 3 files changed, 935 insertions(+), 61 deletions(-)
2017-12-07Record nested typesKeith Seitz2-0/+18
GDB currently does not track types defined in classes. Consider: class A { public: class B { public: class C { }; }; }; (gdb) ptype A type = class A { <no data fields> } This patch changes this behavior so that GDB records these nested types and displays them to the user when he has set the (new) "print type" option "nested-type-limit." Example: (gdb) set print type nested-type-limit 1 (gdb) ptype A type = class A { <no data fields> class A::B { <no data fields> }; } (gdb) set print type nested-type-limit 2 type = class A { <no data fields> class A::B { <no data fields> class A::B::C { <no data fields> }; }; } By default, the code maintains the status quo, that is, it will not print any nested type definitions at all. Testing is carried out via cp_ptype_class which required quite a bit of modification to permit recursive calling (for the nested types). This was most easily facilitated by turning the ptype command output into a queue. Upshot: the test suite now has stack and queue data structures that may be used by test writers. gdb/ChangeLog * NEWS (New commands): Mention set/show print type nested-type-limit. * c-typeprint.c (c_type_print_base): Print out nested types. * dwarf2read.c (struct typedef_field_list): Rename to ... (struct decl_field_list): ... this. Change all uses. (struct field_info) <nested_types_list, nested_types_list_count>: New fields. (add_partial_symbol): Look for nested type definitions in C++, too. (dwarf2_add_typedef): Rename to ... (dwarf2_add_type_defn): ... this. (type_can_define_types): New function. Update assertion to use type_can_define_types. Permit NULL for a field's name. (process_structure_scope): Handle child DIEs of types that can define types. Copy the list of nested types into the type struct. * gdbtypes.h (struct typedef_field): Rename to ... (struct decl_field): ... this. Change all uses. [is_protected, is_private]: New fields. (struct cplus_struct_type) <nested_types, nested_types_count>: New fields. (TYPE_NESTED_TYPES_ARRAY, TYPE_NESTED_TYPES_FIELD) (TYPE_NESTED_TYPES_FIELD_NAME, TYPE_NESTED_TYPES_FIELD_TYPE) (TYPE_NESTED_TYPES_COUNT, TYPE_NESTED_TYPES_FIELD_PROTECTED) (TYPE_NESTED_TYPES_FIELD_PRIVATE): New macros. * typeprint.c (type_print_raw_options, default_ptype_flags): Add default value for print_nested_type_limit. (print_nested_type_limit): New static variable. (set_print_type_nested_types, show_print_type_nested_types): New functions. (_initialize_typeprint): Register new commands for set/show `print-nested-type-limit'. * typeprint.h (struct type_print_options) [print_nested_type_limit]: New field. gdb/testsuite/ChangeLog * gdb.cp/nested-types.cc: New file. * gdb.cp/nested-types.exp: New file. * lib/cp-support.exp: Load data-structures.exp library. (debug_cp_test_ptype_class): New global. (cp_ptype_class_verbose, next_line): New procedures. (cp_test_ptype_class): Add and document new parameter `recursive_qid'. Add and document new return value. Switch the list of lines to a queue. Add support for new `type' key for nested type definitions. Add debugging/troubleshooting messages. * lib/data-structures.exp: New file. gdb/doc/ChangeLog * gdb.texinfo (Symbols): Document "set print type nested-type-limit" and "show print type nested-type-limit".
2017-12-07Implement explicit locations for Python breakpoints.Phil Muldoon2-19/+27
This introduces several new keywords to the bppy_init constructor. The spec parameter is now optional but mutually exclusive to the explicit keywords source, label, function and line. gdb/ChangeLog 2017-12-07 Phil Muldoon <pmuldoon@redhat.com> * python/py-breakpoint.c (bppy_init): Use string_to_event_location over basic location code. Implement explicit location keywords. (bppy_init_validate_args): New function. * NEWS: Document Python explicit breakpoint locations. doc/ChangeLog 2017-12-07 Phil Muldoon <pmuldoon@redhat.com> * python.texi (Breakpoints In Python): Add text relating to allowed explicit locations and keywords in gdb.Breakpoints. testsuite/ChangeLog 2017-12-07 Phil Muldoon <pmuldoon@redhat.com> * gdb.python/py-breakpoint.exp (test_bkpt_explicit_loc): Add new tests for explicit locations.
2017-12-04Document the new "-a" command line option for gcoreSergio Lopez1-1/+8
gdb/ChangeLog: 2017-11-29 Sergio Lopez <slp@redhat.com> * NEWS (Changes since GDB 8.0): Announce new "-a" command line option for gcore. gdb/doc/ChangeLog: 2017-11-29 Sergio Lopez <slp@redhat.com> * gdb.texinfo (gcore man): Document new "-a" command line option.
2017-12-04Document new {set,show} dump-excluded-mappings commands.Sergio Lopez1-1/+13
gdb/ChangeLog: 2017-11-29 Sergio Lopez <slp@redhat.com> * NEWS (Changes since GDB 8.0): Announce {set,show} dump_excluded_mappings commands. gdb/doc/ChangeLog: 2017-11-29 Sergio Lopez <slp@redhat.com> * gdb.texinfo (gcore): Mention new {set,show} dump-excluded-mappings commands. (set dump-excluded-mappings): Document new command.
2017-12-04Update manual for Rust changeTom Tromey2-3/+4
I realized today that a recent change to the Rust support required an update to the manual; and so I updated NEWS as well. 2017-12-04 Tom Tromey <tom@tromey.com> * NEWS: Mention Rust trait object inspection. 2017-12-04 Tom Tromey <tom@tromey.com> * gdb.texinfo (Rust): Update trait object status
2017-12-01Add support for the readnever conceptSergio Durigan Junior2-1/+28
The purpose of this concept is to turn the load of debugging information off, either globally (via the '--readnever' option), or objfile-specific. The implementation proposed here is an extension of the patch distributed with Fedora GDB; looking at the Fedora patch itself and the history, one can see some reasons why it was never resubmitted: - The patch appears to have been introduced as a workaround, at least initially; - The patch is far from perfect, as it simply shunts the load of DWARF debugging information, without really worrying about the other debug format. - Who really does non-symbolic debugging anyways? One use of this feature is when a user simply wants to do the following sequence: attach, dump core, detach. Loading the debugging information in this case is an unnecessary cause of delay. This patch expands the version shipped with Fedora GDB in order to make the feature available for all the debuginfo backends, not only for DWARF. It also implements a per-objfile flag which can be activated by using the "-readnever" command when using the 'add-symbol-file' or 'symbol-file' commands. It's also worth mentioning that this patch tests whether GDB correctly fails to initialize if both '--readnow' and '--readnever' options are passed. Tested on the BuildBot. gdb/ChangeLog: 2017-12-01 Andrew Cagney <cagney@redhat.com> Joel Brobecker <brobecker@adacore.com> Sergio Durigan Junior <sergiodj@redhat.com> * NEWS (Changes since GDB 8.0: Mention new '--readnever' feature. * coffread.c (coff_symfile_read): Do not map over sections with 'coff_locate_sections' if readnever is on. * dwarf2read.c (dwarf2_has_info): Return 0 if readnever is on. * elfread.c (elf_symfile_read): Do not map over sections with 'elf_locate_sections' if readnever is on. * main.c (validate_readnow_readnever): New function. (captured_main_1): Add support for --readnever. (print_gdb_help): Document --readnever. * objfile-flags.h (enum objfile_flag) <OBJF_READNEVER>: New flag. * symfile.c (readnever_symbol_files): New global. (symbol_file_add_with_addrs): Set 'OBJF_READNEVER' when 'READNEVER_SYMBOL_FILES' is set. (validate_readnow_readnever): New function. (symbol_file_command): Handle '-readnever' option. Call 'validate_readnow_readnever'. (add_symbol_file_command): Handle '-readnever' option. Call 'validate_readnow_readnever'. (_initialize_symfile): Document new '-readnever' option for both 'symbol-file' and 'add-symbol-file' commands. * top.h (readnever_symbol_files): New extern global. * xcoffread.c (xcoff_initial_scan): Do not read debug information if readnever is on. gdb/doc/ChangeLog: 2017-12-01 Andrew Cagney <cagney@redhat.com> Joel Brobecker <brobecker@adacore.com> Sergio Durigan Junior <sergiodj@redhat.com> * gdb.texinfo (File Options): Document --readnever. (Commands to Specify Files): Likewise, for 'symbol-file' and 'add-symbol-file'. gdb/testsuite/ChangeLog: 2017-12-01 Joel Brobecker <brobecker@adacore.com> Sergio Durigan Junior <sergiodj@redhat.com> Pedro Alves <palves@redhat.com> * gdb.base/readnever.c, gdb.base/readnever.exp: New files.
2017-12-01Revert "Add support for the readnever concept"Sergio Durigan Junior2-28/+1
This reverts commit e2e321740ce2e36a97be2a410cd56eebaa2304aa. It was mistakenly pushed.
2017-12-01Add support for the readnever conceptSergio Durigan Junior2-1/+28
The purpose of this concept is to turn the load of debugging information off, either globally (via the '--readnever' option), or objfile-specific. The implementation proposed here is an extension of the patch distributed with Fedora GDB; looking at the Fedora patch itself and the history, one can see some reasons why it was never resubmitted: - The patch appears to have been introduced as a workaround, at least initially; - The patch is far from perfect, as it simply shunts the load of DWARF debugging information, without really worrying about the other debug format. - Who really does non-symbolic debugging anyways? One use of this feature is when a user simply wants to do the following sequence: attach, dump core, detach. Loading the debugging information in this case is an unnecessary cause of delay. This patch expands the version shipped with Fedora GDB in order to make the feature available for all the debuginfo backends, not only for DWARF. It also implements a per-objfile flag which can be activated by using the "-readnever" command when using the 'add-symbol-file' or 'symbol-file' commands. It's also worth mentioning that this patch tests whether GDB correctly fails to initialize if both '--readnow' and '--readnever' options are passed. Tested on the BuildBot. gdb/ChangeLog: 2017-12-01 Andrew Cagney <cagney@redhat.com> Joel Brobecker <brobecker@adacore.com> Sergio Durigan Junior <sergiodj@redhat.com> * NEWS (Changes since GDB 8.0: Mention new '--readnever' feature. * coffread.c (coff_symfile_read): Do not map over sections with 'coff_locate_sections' if readnever is on. * dwarf2read.c (dwarf2_has_info): Return 0 if readnever is on. * elfread.c (elf_symfile_read): Do not map over sections with 'elf_locate_sections' if readnever is on. * main.c (validate_readnow_readnever): New function. (captured_main_1): Add support for --readnever. (print_gdb_help): Document --readnever. * objfile-flags.h (enum objfile_flag) <OBJF_READNEVER>: New flag. * symfile.c (readnever_symbol_files): New global. (symbol_file_add_with_addrs): Set 'OBJF_READNEVER' when 'READNEVER_SYMBOL_FILES' is set. (validate_readnow_readnever): New function. (symbol_file_command): Handle '-readnever' option. Call 'validate_readnow_readnever'. (add_symbol_file_command): Handle '-readnever' option. Call 'validate_readnow_readnever'. (_initialize_symfile): Document new '-readnever' option for both 'symbol-file' and 'add-symbol-file' commands. * top.h (readnever_symbol_files): New extern global. * xcoffread.c (xcoff_initial_scan): Do not read debug information if readnever is on. gdb/doc/ChangeLog: 2017-12-01 Andrew Cagney <cagney@redhat.com> Joel Brobecker <brobecker@adacore.com> Sergio Durigan Junior <sergiodj@redhat.com> * gdb.texinfo (File Options): Document --readnever. (Commands to Specify Files): Likewise, for 'symbol-file' and 'add-symbol-file'. gdb/testsuite/ChangeLog: 2017-12-01 Joel Brobecker <brobecker@adacore.com> Sergio Durigan Junior <sergiodj@redhat.com> Pedro Alves <palves@redhat.com> * gdb.base/readnever.c, gdb.base/readnever.exp: New files.
2017-11-29Breakpoints in symbols with ABI tags (PR c++/19436)Pedro Alves2-0/+49
Trying to set a breakpoint in a function with an ABI tag does not work currently. E.g., debugging gdb itself, we see this with the "string_printf" function: (top-gdb) b string_print [TAB] (top-gdb) b string_printf[abi:cxx11](char const*, ...) [RET] No source file named string_printf[abi. Make breakpoint pending on future shared library load? (y or [n]) Quoting doesn't help: (top-gdb) b 'string_printf[abi:cxx11]'(char const*, ...) malformed linespec error: unexpected string, "(char const*, ...)" (top-gdb) b 'string_printf[abi:cxx11](char const*, ...)' No source file named string_printf[abi. Make breakpoint pending on future shared library load? (y or [n]) n This patch fixes this, and takes it a bit further. The actual symbol name as demangled by libiberty's demangler is really string_printf[abi:cxx11](char const*, ...) however, this patch makes it possible to set the breakpoint with string_printf(char const*, ...) too. I.e., ignoring the ABI tag. And to match, it teaches the completer to complete the symbol name without the ABI tag, i.e., "string_pri<TAB>" -> "string_printf(char const*, ...)" If however, you really want to break on a symbol with the tag, then you simply start writing the tag, and GDB will preserve it, like: "string_printf[a<TAB>" -> "string_printf[abi:cxx11](char const*, ...)" Grows the gdb.linespec/ tests like this: -# of expected passes 8977 +# of expected passes 9176 gdb/ChangeLog: 2017-11-29 Pedro Alves <palves@redhat.com> PR c++/19436 * NEWS: Mention setting breakpoints on functions with C++ ABI tags. * completer.h (completion_match_for_lcd) <match, mark_ignored_range>: New methods. <finish>: Consider ignored ranges. <clear>: Clear ignored ranges. <m_ignored_ranges, m_finished_storage>: New fields. * cp-support.c (cp_search_name_hash): Ignore ABI tags. (cp_symbol_name_matches_1, cp_fq_symbol_name_matches): Pass the completion_match_for_lcd pointer to strncmp_iw_with_mode. (test_cp_symbol_name_cmp): Add [abi:...] tags unit tests. * language.c (default_symbol_name_matcher): Pass the completion_match_for_lcd pointer to strncmp_iw_with_mode. * linespec.c (linespec_lexer_lex_string): Don't tokenize ABI tags. * utils.c (skip_abi_tag): New function. (strncmp_iw_with_mode): Add completion_match_for_lcd parameter. Handle ABI tags. * utils.h (strncmp_iw_with_mode): Add completion_match_for_lcd parameter. gdb/testsuite/ChangeLog: 2017-11-29 Pedro Alves <palves@redhat.com> PR c++/19436 * gdb.linespec/cpls-abi-tag.cc: New file. * gdb.linespec/cpls-abi-tag.exp: New file. gdb/doc/ChangeLog: 2017-11-29 Pedro Alves <palves@redhat.com> PR c++/19436 * gdb.texinfo (Debugging C Plus Plus): Document setting breakpoints in functions with ABI tags.
2017-11-29Make "break foo" find "A::foo", A::B::foo", etc. [C++ and wild matching]Pedro Alves2-1/+49
This patch teaches GDB about setting breakpoints in all scopes (namespaces and classes) by default. Here's a contrived example: (gdb) b func<tab> (anonymous namespace)::A::function() Bn::(anonymous namespace)::B::function() function(int, int) (anonymous namespace)::B::function() Bn::(anonymous namespace)::function() gdb::(anonymous namespace)::A::function() (anonymous namespace)::B::function() const Bn::(anonymous namespace)::function(int, int) gdb::(anonymous namespace)::function() (anonymous namespace)::function() Bn::B::func() gdb::(anonymous namespace)::function(int, int) (anonymous namespace)::function(int, int) Bn::B::function() gdb::A::func() A::func() Bn::func() gdb::A::function() A::function() Bn::function() gdb::func() B::func() Bn::function(int, int) gdb::function() B::function() Bn::function(long) gdb::function(int, int) B::function() const func() gdb::function(long) B::function_const() const function() (gdb) b function Breakpoint 1 at 0x4005ce: function. (26 locations) (gdb) b B::function<tab> (anonymous namespace)::B::function() B::function() const Bn::B::function() (anonymous namespace)::B::function() const B::function_const() const B::function() Bn::(anonymous namespace)::B::function() (gdb) b B::function Breakpoint 1 at 0x40072c: B::function. (6 locations) To get back the original behavior of interpreting the function name as a fully-qualified name, you can use the new "-qualified" (or "-q") option/flag (added by this commit). For example: (gdb) b B::function (anonymous namespace)::B::function() B::function() const Bn::B::function() (anonymous namespace)::B::function() const B::function_const() const B::function() Bn::(anonymous namespace)::B::function() vs: (gdb) b -qualified B::function B::function() B::function() const B::function_const() const I've chosen "-qualified" / "-q" because "-f" (for "full" or "fully-qualified") is already taken for "-function". Note: the "-qualified" option works with both linespecs and explicit locations. I.e., these are equivalent: (gdb) b -q func (gdb) b -q -f func and so are these: (gdb) b -q filename.cc:func (gdb) b -q -s filename.cc -f func (gdb) b -s filename.cc -q -f func (gdb) b -s filename.cc -f func -q To better understand why I consider wild matching the better default, consider what happens when we get to the point when _all_ of GDB is wrapped under "namespace gdb {}". I have a patch series that does that, and when I started debugging that GDB, I immediately became frustrated. You'd have to write "b gdb::internal_error", "b gdb::foo", "b gdb::bar", etc. etc., which gets annoying pretty quickly. OTOH, consider how this makes it very easy to set breakpoints in classes wrapped in anonymous namespaces. You just don't think of them, GDB finds the symbols for you automatically. (At the Cauldron a couple months ago, several people told me that they run into a similar issue when debugging other C++ projects. One example was when debugging LLVM, which puts all its code under the "llvm" namespace.) Implementation-wise, what the patch does is: - makes C++ symbol name hashing only consider the last component of a symbol name. (so that we can look up symbol names by last-component name only). - adds a C++ symbol name matcher for symbol_name_match_type::WILD, which ignores missing leading specifiers / components. - adjusts a few preexisting testsuite tests to use "-qualified" when they mean it. - adds new testsuite tests. - adds unit tests. Grows the gdb.linespec/ tests like this: -# of expected passes 7823 +# of expected passes 8977 gdb/ChangeLog: 2017-11-29 Pedro Alves <palves@redhat.com> * NEWS: Mention that breakpoints on C++ functions are now set on on all namespaces/classes by default, and mention "break -qualified". * ax-gdb.c (agent_command_1): Adjust to pass a symbol_name_match_type to new_linespec_location. * breakpoint.c (parse_breakpoint_sals): Adjust to get_linespec_location's return type change. (strace_marker_create_sals_from_location): Adjust to pass a symbol_name_match_type to new_linespec_location. (strace_marker_decode_location): Adjust to get_linespec_location's return type change. (strace_command): Adjust to pass a symbol_name_match_type to new_linespec_location. (LOCATION_HELP_STRING): Add paragraph about wildmatching, and mention "-qualified". * c-lang.c (cplus_language_defn): Install cp_search_name_hash. * completer.c (explicit_location_match_type::MATCH_QUALIFIED): New enumerator. (complete_address_and_linespec_locations): New parameter 'match_type'. Pass it down. (explicit_options): Add "-qualified". (collect_explicit_location_matches): Pass the requested match type to the linespec completers. Handle MATCH_QUALIFIED. (location_completer): Handle "-qualified" combined with linespecs. * cp-support.c (cp_search_name_hash): New. (cp_symbol_name_matches_1): Implement wild matching for C++. (cp_fq_symbol_name_matches): Reimplement. (cp_get_symbol_name_matcher): Return different matchers depending on the lookup name's match type. (selftests::test_cp_symbol_name_matches): Add wild matching tests. * cp-support.h (cp_search_name_hash): New declaration. * dwarf2read.c (selftests::dw2_expand_symtabs_matching::test_symbols): Add symbols. (test_dw2_expand_symtabs_matching_symbol): Add wild matching tests. * guile/scm-breakpoint.c (gdbscm_register_breakpoint_x): Adjust to pass a symbol_name_match_type to new_linespec_location. * linespec.c (linespec_parse_basic): Lookup function symbols using the parser's symbol name match type. (convert_explicit_location_to_linespec): New symbol_name_match_type parameter. Pass it down to find_linespec_symbols. (convert_explicit_location_to_sals): Pass the location's name match type to convert_explicit_location_to_linespec. (parse_linespec): New match_type parameter. Save it in the parser. (linespec_parser_new): Default to symbol_name_match_type::WILD. (linespec_complete_function): New symbol_name_match_type parameter. Use it. (complete_linespec_component): Pass down the parser's recorded name match type. (linespec_complete_label): New symbol_name_match_type parameter. Use it. (linespec_complete): New symbol_name_match_type parameter. Save it in the parser and pass it down. Adjust to get_linespec_location's prototype change. (find_function_symbols, find_linespec_symbols): New symbol_name_match_type parameter. Pass it down instead of assuming symbol_name_match_type::WILD. * linespec.h (linespec_complete, linespec_complete_function) (linespec_complete_label): New symbol_name_match_type parameter. * location.c (event_location::linespec_location): Now a struct linespec_location. (EL_LINESPEC): Adjust. (initialize_explicit_location): Default to symbol_name_match_type::WILD. (new_linespec_location): New symbol_name_match_type parameter. Record it in the location. (get_linespec_location): Now returns a struct linespec_location. (new_explicit_location): Also copy func_name_match_type. (explicit_to_string_internal) (string_to_explicit_location): Handle "-qualified". (copy_event_location): Adjust to LINESPEC_LOCATION type change. Copy symbol_name_match_type fields. (event_location_deleter::operator()): Adjust to LINESPEC_LOCATION type change. (event_location_to_string): Adjust to LINESPEC_LOCATION type change. Handle "-qualfied". (string_to_explicit_location): Handle "-qualified". (string_to_event_location_basic): New symbol_name_match_type parameter. Pass it down. (string_to_event_location): Handle "-qualified". * location.h (struct linespec_location): New. (explicit_location::func_name_match_type): New field. (new_linespec_location): Now returns a const linespec_location *. (string_to_event_location_basic): New symbol_name_match_type parameter. (explicit_completion_info::saw_explicit_location_option): New field. * mi/mi-cmd-break.c (mi_cmd_break_insert_1): Adjust to pass a symbol_name_match_type to new_linespec_location. * python/py-breakpoint.c (bppy_init): Likewise. * python/python.c (gdbpy_decode_line): Likewise. gdb/testsuite/ChangeLog: 2017-11-29 Pedro Alves <palves@redhat.com> * gdb.base/langs.exp: Use -qualified. * gdb.cp/meth-typedefs.exp: Use -qualified, and add tests without it. * gdb.cp/namespace.exp: Use -qualified. * gdb.linespec/cpcompletion.exp (overload-2, fqn, fqn-2) (overload-3, template-overload, template-ret-type, const-overload) (const-overload-quoted, anon-ns, ambiguous-prefix): New procedures. (test_driver): Call them. * gdb.cp/save-bp-qualified.cc: New. * gdb.cp/save-bp-qualified.exp: New. * gdb.linespec/explicit.exp: Test -qualified. * lib/completion-support.exp (completion::explicit_opts_list): Add "-qualified". * lib/gdb.exp (gdb_breakpoint): Handle "qualified". gdb/doc/ChangeLog: 2017-11-29 Pedro Alves <palves@redhat.com> * gdb.texinfo (Linespec Locations): Document how "function" is interpreted in C++ and Ada. Document "-qualified". (Explicit Locations): Document how "-function" is interpreted in C++ and Ada. Document "-qualified".
2017-11-26Update find command help and search memory docsDominik Czarnota2-1/+13
This patch updates the `find` command help and docs description to show how to search for not null terminated strings when current language's strings includes it. gdb/ChangeLog: PR gdb/21945 * findcmd.c (_initialize_mem_search): Update find command help text. gdb/doc/ChangeLog: PR gdb/21945 * gdb.texinfo (Search Memory): Update description and example about how to search a string without NULL terminator.
2017-11-24(Ada) provide the exception message when hitting an exception catchpointJoel Brobecker2-2/+8
This patch enhances the debugger to print the exception message, when available, as part of an exception catchpoint hit notification (both GDB/CLI and GDB/MI). For instance, with the following code... procedure A is begin raise Constraint_Error with "hello world"; end A; ... instead of printing... Catchpoint 1, CONSTRAINT_ERROR at 0x000000000040245c in a () at a.adb:3 ... it now prints: Catchpoint 1, CONSTRAINT_ERROR (hello world) at 0x000000000040245c in a () ^^^^^^^^^^^^^ This enhancement requires runtime support. If not present, the debugger just behaves as before. In GDB/MI mode, if the exception message is available, it is provided as an extra field named "exception-message" in the catchpoint notification: *stopped,bkptno="1",[...],exception-name="CONSTRAINT_ERROR", exception-message="hello world",[...] gdb/ChangeLog: * ada-lang.c (ada_exception_message_1, ada_exception_message): New functions. (print_it_exception): If available, display the exception message as well. * NEWS: Document new feature. gdb/doc/ChangeLog: * gdb.texinfo (GDB/MI Ada Exception Information): Document new "exception-message" field. gdb/testsuite/ChangeLog: * gdb.ada/catch_ex.exp, gdb.ada/mi_catch_ex.exp, gdb.ada/mi_ex_cond.exp: Accept optional exception message in when hitting an exception catchpoint.
2017-11-24Fix issues with gdb-memory-map.dtdSimon Marchi2-6/+9
While writing a unit test for parse_memory_map, I tried to validate my test input against gdb-memory-map.dtd, and found a few problems with it. This doesn't influence how gdb parses it (AFAIK it doesn't use the linked dtd), but if you edit the xml file in an editor that supports dtds, you'll get plenty of errors. - The <memory-map> element accepts exactly one <memory> OR <property> as a child. This is a problem because you can't have multiple <memory> elements and you shouldn't be able to have <property> elements as direct children of <memory-map>. - The <memory> element wants exactly one <property> child. This is wrong, since you could have zero or more (even though we only support one kind of property currently). - I have no idea wht the device attribute of <memory> is, GDB doesn't read that. I searched back in time a bit but couldn't find a trace of it. I took the opportunity to tighten what is accepted as a value of the memory type and property name attributes. We currently accept any string, but we can restrict them to the values GDB really accepts (and which are documented). AFAIK, this "file" only exists in the documentation, in gdb.texinfo, so this is what I modified. However, it's also available at http://sourceware.org/gdb/gdb-memory-map.dtd. This one should be updated too, but I don't know how that should be done. gdb/doc/ChangeLog: * gdb.texinfo (Memory Map Format): Update gdb-memory-map.dtd.
2017-11-24Document linespec/explicit locations & completion improvements (manual + NEWS)Pedro Alves2-22/+46
gdb/ChangeLog: 2017-11-24 Pedro Alves <palves@redhat.com> * NEWS: Mention linespecs and explicit locations, and completion improvements. gdb/doc/ChangeLog: 2017-11-24 Pedro Alves <palves@redhat.com> * gdb.texinfo (Completion): Update need-quoting examples. Remove false claim that GDB inserts quoting automatically. (Symbols): Add anchor.
2017-11-22Target FP: Make use of MPFR if availableUlrich Weigand2-0/+20
This second patch introduces mfpr_float_ops, an new implementation of target_float_ops. This implements precise emulation of target floating-point formats using the MPFR library. This is then used to perform operations on types that do not match any host type. Note that use of MPFR is still not required. The patch adds a configure option --with-mpfr similar to --with-expat. If use of MPFR is disabled via the option or MPFR is not available, code will fall back to current behavior. This means that operations on types that do not match any host type will be implemented on the host long double type instead. A new test case verifies that we can correctly print the largest __float128 value now. gdb/ChangeLog: 2017-11-22 Ulrich Weigand <uweigand@de.ibm.com> * NEWS: Document use of GNU MPFR. * README: Likewise. * Makefile.in (LIBMPFR): Add define. (CLIBS): Add $(LIBMPFR). * configure.ac: Add --with-mpfr configure option. * configure: Regenerate. * config.in: Regenerate. * target-float.c [HAVE_LIBMPFR]: Include <mpfr.h>. (class mpfr_float_ops): New type. (mpfr_float_ops::from_target): Two new overloaded functions. (mpfr_float_ops::to_target): Likewise. (mpfr_float_ops::to_string): New function. (mpfr_float_ops::from_string): Likewise. (mpfr_float_ops::to_longest): Likewise. (mpfr_float_ops::from_longest): Likewise. (mpfr_float_ops::from_ulongest): Likewise. (mpfr_float_ops::to_host_double): Likewise. (mpfr_float_ops::from_host_double): Likewise. (mpfr_float_ops::convert): Likewise. (mpfr_float_ops::binop): Likewise. (mpfr_float_ops::compare): Likewise. (get_target_float_ops): Use mpfr_float_ops if available. gdb/doc/ChangeLog: 2017-11-22 Ulrich Weigand <uweigand@de.ibm.com> * gdb.texinfo (Requirements): Document use of GNU MPFR. gdb/testsuite/ChangeLog: 2017-11-22 Ulrich Weigand <uweigand@de.ibm.com> * gdb.base/float128.c (large128): New variable. * gdb.base/float128.exp: Add test to print largest __float128 value.
2017-11-16Add Python rbreak command.Phil Muldoon2-0/+21
gdb/Changelog 2017-11-16 Phil Muldoon <pmuldoon@redhat.com> * python/python.c (gdbpy_rbreak): New function. * NEWS: Document Python rbreak feature. testsuite/Changelog 2017-11-16 Phil Muldoon <pmuldoon@redhat.com> * gdb.python/py-rbreak.exp: New file. * gdb.python/py-rbreak.c: New file. * gdb.python/py-rbreak-func2.c: New file. doc/Changelog 2017-11-16 Phil Muldoon <pmuldoon@redhat.com> * python.texi (Basic Python): Add rbreak documentation.
2017-11-07Allow enabling/disabling breakpoint location rangesXavier Roirand2-8/+16
When a breakpoint has multiple locations, like e.g.: Num Type Disp Enb Address What 1 breakpoint keep y <MULTIPLE> 1.1 y 0x080486a2 in void foo<int>()... 1.2 y 0x080486ca in void foo<double>()... [....] 1.5 y 0x080487fa in void foo<long>()... it's possible to enable/disable the individual locations using the '<breakpoint_number>.<location_number>' syntax, like e.g.: (gdb) disable 1.2 1.3 1.4 1.5 That's inconvenient when you have a long list of locations to disable, however. This patch adds shorthand for the above, by making it possible to specify a range of locations with the following syntax (similar to thread id ranges): <breakpoint_number>.<first_location_number>-<last_location_number> For example, the command above can now be simplified to: (gdb) disable 1.2-5 gdb/ChangeLog: 2017-11-07 Xavier Roirand <roirand@adacore.com> Pedro Alves <palves@redhat.com> * breakpoint.c (map_breakpoint_number_range): New, factored out from ... (map_breakpoint_numbers): ... here. (find_location_by_number): Change parameters from string to breakpoint number and location. (extract_bp_number_and_location): New function. (enable_disable_bp_num_loc) (enable_disable_breakpoint_location_range) (enable_disable_command): New functions, factored out ... (enable_command, disable_command): ... these functions, and adjusted to support ranges. * NEWS: Document enable/disable breakpoint location range feature. gdb/doc/ChangeLog: 2017-11-07 Xavier Roirand <roirand@adacore.com> Pedro Alves <palves@redhat.com> * gdb.texinfo (Set Breaks): Document support for breakpoint location ranges in the enable/disable commands. gdb/testsuite/ChangeLog: 2017-11-07 Xavier Roirand <roirand@adacore.com> Pedro Alves <palves@redhat.com> * gdb.base/ena-dis-br.exp: Add reference to gdb.cp/ena-dis-br-range.exp. * gdb.cp/ena-dis-br-range.exp: New file. * gdb.cp/ena-dis-br-range.cc: New file.
2017-10-04Extend "set cwd" to work on gdbserverSergio Durigan Junior2-3/+44
This is the "natural" extension necessary for the "set cwd" command (and the whole "set the inferior's cwd" logic) to work on gdbserver. The idea here is to have a new remote packet, QSetWorkingDir (name adopted from LLDB's extension to the RSP, as can be seen at <https://raw.githubusercontent.com/llvm-mirror/lldb/master/docs/lldb-gdb-remote.txt>), which sends an hex-encoded string representing the working directory that the remote inferior will use. There is a slight difference from the packet proposed by LLDB: GDB's version will accept empty arguments, meaning that the user wants to clear the previously set working directory for the inferior (i.e., "set cwd" without arguments on GDB). For UNIX-like targets this feature is already implemented on nat/fork-inferior.c, and all gdbserver has to do is to basically implement "set_inferior_cwd" and call it whenever such packet arrives. For other targets, like Windows, it is possible to use the existing "get_inferior_cwd" function and do the necessary steps to make sure that the inferior will use the specified working directory. Aside from that, the patch consists basically of updates to the testcase (making it available on remote targets) and the documentation. No regressions found. gdb/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * NEWS (Changes since GDB 8.0): Add entry about new 'set-cwd-on-gdbserver' feature. (New remote packets): Add entry for QSetWorkingDir. * common/common-inferior.h (set_inferior_cwd): New prototype. * infcmd.c (set_inferior_cwd): Remove "static". (show_cwd_command): Expand text to include remote debugging. * remote.c: Add PACKET_QSetWorkingDir. (remote_protocol_features) <QSetWorkingDir>: New entry for PACKET_QSetWorkingDir. (extended_remote_set_inferior_cwd): New function. (extended_remote_create_inferior): Call "extended_remote_set_inferior_cwd". (_initialize_remote): Call "add_packet_config_cmd" for QSetWorkingDir. gdb/gdbserver/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * inferiors.c (set_inferior_cwd): New function. * server.c (handle_general_set): Handle QSetWorkingDir packet. (handle_query): Inform that QSetWorkingDir is supported. * win32-low.c (create_process): Pass the inferior's cwd to CreateProcess. gdb/testsuite/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * gdb.base/set-cwd.exp: Make it available on native-extended-gdbserver. gdb/doc/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * gdb.texinfo (Starting your Program) <The working directory.>: Mention remote debugging. (Working Directory) <Your Program's Working Directory>: Likewise. (Connecting) <Remote Packet>: Add "set-working-dir" and "QSetWorkingDir" to the table. (Remote Protocol) <QSetWorkingDir>: New item, explaining the packet.
2017-10-04Implement "set cwd" command on GDBSergio Durigan Junior2-13/+50
This commit adds new "set/show cwd" commands, which are used to set/show the current working directory of the inferior that will be started. The idea here is that "set cwd" will become the de facto way of setting the inferior's cwd. Currently, the user can use "cd" for that, but there are side effects: with "cd", GDB also switches to another directory, and that can impact the loading of scripts and other files. With "set cwd", we separate the logic into a new command. To maintain backward compatibility, if the user issues a "cd" command but doesn't use "set cwd", then the inferior's cwd will still be changed according to what the user specified. However, "set cwd" has precedence over "cd", so it can always be used to override it. "set cwd" works in the following way: - If the user sets the inferior's cwd by using "set cwd", then this directory is saved into current_inferior ()->cwd and is used when the inferior is started (see below). - If the user doesn't set the inferior's cwd by using "set cwd", but rather use the "cd" command as before, then this directory is inherited by the inferior because GDB will have chdir'd into it. On Unix-like hosts, the way the directory is changed before the inferior execution is by expanding the user set directory before the fork, and then "chdir" after the call to fork/vfork on "fork_inferior", but before the actual execution. On Windows, the inferior cwd set by the user is passed directly to the CreateProcess call, which takes care of the actual chdir for us. This way, we'll make sure that GDB's cwd is not affected by the user set cwd. gdb/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * NEWS (New commands): Mention "set/show cwd". * cli/cli-cmds.c (_initialize_cli_cmds): Mention "set cwd" on "cd" command's help text. * common/common-inferior.h (get_inferior_cwd): New prototype. * infcmd.c (inferior_cwd_scratch): New global variable. (set_inferior_cwd): New function. (get_inferior_cwd): Likewise. (set_cwd_command): Likewise. (show_cwd_command): Likewise. (_initialize_infcmd): Add "set/show cwd" commands. * inferior.h (class inferior) <cwd>: New field. * nat/fork-inferior.c: Include "gdb_tilde_expand.h". (fork_inferior): Change inferior's cwd before its execution. * windows-nat.c (windows_create_inferior): Pass inferior's cwd to CreateProcess. gdb/gdbserver/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * inferiors.c (current_inferior_cwd): New global variable. (get_inferior_cwd): New function. * inferiors.h (struct process_info) <cwd>: New field. gdb/doc/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * gdb.texinfo (Starting your Program) <The working directory.>: Mention new "set cwd" command. (Working Directory) <Your Program's Working Directory>: Rephrase to explain that "set cwd" exists and is the default way to change the inferior's cwd. gdb/testsuite/ChangeLog: 2017-10-04 Sergio Durigan Junior <sergiodj@redhat.com> * gdb.base/set-cwd.c: New file. * gdb.base/set-cwd.exp: Likewise.
2017-09-25S390: Document guarded-storage register supportAndreas Arnez2-0/+13
This documents the newly added support for guarded-storage registers on IBM z. gdb/ChangeLog: * NEWS: Advertise support for guarded-storage registers on IBM z. gdb/doc/ChangeLog: * gdb.texinfo (S/390 and System z Features): Document the new features org.gnu.gdb.s390.gs and org.gnu.gdb.s390.gsbc.
2017-09-21Documentation for qXfer:threads:read handle attributeKevin Buettner2-1/+8
gdb/doc/ChangeLog: * gdb.texinfo (qXfer:threads:read): Add documentation for handle attribute.
2017-09-21Documentation for Inferior.thread_from_thread_handleKevin Buettner2-0/+12
gdb/doc/ChangeLog: * python.texi (Inferiors In Python): Add description for method Inferior.thread_from_thread_handle.
2017-09-19Add a 'starti' command.John Baldwin2-4/+20
This works like 'start' but it stops at the first instruction rather than the first line in main(). This is useful if one wants to single step through runtime linker startup. While here, introduce a RUN_ARGS_HELP macro for shared help text between run, start, and starti. This includes expanding the help for start and starti to include details from run's help text. gdb/ChangeLog: * NEWS (Changes since GDB 8.0): Add starti. * infcmd.c (enum run_break): New. (run_command_1): Queue pending event for RUN_STOP_AT_FIRST_INSN case. (run_command): Use enum run_how. (start_command): Likewise. (starti_command): New function. (RUN_ARGS_HELP): New macro. (_initialize_infcmd): Use RUN_ARGS_HELP for run and start commands. Add starti command. gdb/doc/ChangeLog: * gdb.texinfo (Starting your Program): Add description of starti command. Mention starti command as an alternative for debugging the elaboration phase. gdb/testsuite/ChangeLog: * gdb.base/starti.c: New file. * gdb.base/starti.exp: New file. * lib/gdb.exp (gdb_starti_cmd): New procedure.
2017-09-16Add selftests run filteringSimon Marchi2-0/+13
With the growing number of selftests, I think it would be useful to be able to run only a subset of the tests. This patch associates a name to each registered selftest. It then allows doing something like: (gdb) maintenance selftest aarch64 Running self-tests. Running selftest aarch64-analyze-prologue. Running selftest aarch64-process-record. Ran 2 unit tests, 0 failed or with gdbserver: ./gdbserver --selftest=aarch64 In both cases, only the tests that contain "aarch64" in their name are ran. To help validate that the tests you want to run were actually ran, it also prints a message with the test name before running each test. Right now, all the arch-dependent tests are registered as a single test of the selftests. To be able to filter those too, I made them "first-class citizen" selftests. The selftest type is an interface, with different implementations for "simple selftests" and "arch selftests". The run_tests function simply iterates on that an invokes operator() on each test. I changed the tests data structure from a vector to a map, because - it allows iterating in a stable (alphabetical) order - it allows to easily verify if a test with a given name has been registered, to avoid duplicates There's also a new command "maintenance info selftests" that lists the registered selftests. gdb/ChangeLog: * common/selftest.h (selftest): New struct/interface. (register_test): Add name parameter, add new overload. (run_tests): Add filter parameter. (for_each_selftest_ftype): New typedef. (for_each_selftest): New declaration. * common/selftest.c (tests): Change type to map<string, unique_ptr<selftest>>. (simple_selftest): New struct. (register_test): New function. (register_test): Add name parameter and use it. (run_tests): Add filter parameter and use it. Add prints. Adjust to vector -> map change. * aarch64-tdep.c (_initialize_aarch64_tdep): Add names when registering selftests. * arm-tdep.c (_initialize_arm_tdep): Likewise. * disasm-selftests.c (_initialize_disasm_selftests): Likewise. * dwarf2-frame.c (_initialize_dwarf2_frame): Likewise. * dwarf2loc.c (_initialize_dwarf2loc): Likewise. * findvar.c (_initialize_findvar): Likewise. * gdbarch-selftests.c (_initialize_gdbarch_selftests): Likewise. * maint.c (maintenance_selftest): Update call to run_tests. (maintenance_info_selftests): New function. (_initialize_maint_cmds): Register "maintenance info selftests" command. Update "maintenance selftest" doc. * regcache.c (_initialize_regcache): Add names when registering selftests. * rust-exp.y (_initialize_rust_exp): Likewise. * selftest-arch.c (gdbarch_selftest): New struct. (gdbarch_tests): Remove. (register_test_foreach_arch): Add name parameter. Call register_test. (tests_with_arch): Remove, move most content to gdbarch_selftest::operator(). (_initialize_selftests_foreach_arch): Remove. * selftest-arch.h (register_test_foreach_arch): Add name parameter. (run_tests_with_arch): New declaration. * utils-selftests.c (_initialize_utils_selftests): Add names when registering selftests. * utils.c (_initialize_utils): Likewise. * unittests/array-view-selftests.c (_initialize_array_view_selftests): Likewise. * unittests/environ-selftests.c (_initialize_environ_selftests): Likewise. * unittests/function-view-selftests.c (_initialize_function_view_selftests): Likewise. * unittests/offset-type-selftests.c (_initialize_offset_type_selftests): Likewise. * unittests/optional-selftests.c (_initialize_optional_selftests): Likewise. * unittests/scoped_restore-selftests.c (_initialize_scoped_restore_selftests): Likewise. * NEWS: Document "maintenance selftest" and "maint info selftests". gdb/gdbserver/ChangeLog: * server.c (captured_main): Accept argument for --selftest. Update run_tests call. * linux-x86-tdesc-selftest.c (initialize_low_tdesc): Add names when registering selftests. gdb/doc/ChangeLog: * gdb.texinfo (Maintenance Commands): Document filter parameter of "maint selftest". Document "maint info selftests" command.
2017-09-11Add new_inferior, inferior_deleted, and new_thread eventsTom Tromey2-0/+37
This adds a few new events to gdb's Python layer: new_inferior, inferior_deleted, and new_thread. I wanted to be able to add a combined inferior/thread display window to my GUI, and I needed a few events to make this work. This is PR python/15622. ChangeLog 2017-09-11 Tom Tromey <tom@tromey.com> PR python/15622: * NEWS: Add entry. * python/python.c (do_start_initialization): Initialize new event types. * python/python-internal.h (gdbpy_initialize_new_inferior_event) (gdbpy_initialize_inferior_deleted_event) (gdbpy_initialize_new_thread_event): Declare. * python/py-threadevent.c (create_thread_event_object): Add option "thread" parameter. * python/py-inferior.c (new_thread_event_object_type) (new_inferior_event_object_type) (inferior_deleted_event_object_type): Declare. (python_new_inferior, python_inferior_deleted): New functions. (add_thread_object): Emit new_thread event. (gdbpy_initialize_inferior): Attach new functions to corresponding observers. (new_thread, new_inferior, inferior_deleted): Define new event types. * python/py-evts.c (gdbpy_initialize_py_events): Add new registries. * python/py-events.h (events_object) <new_inferior, inferior_deleted, new_thread>: New fields. * python/py-event.h (create_thread_event_breakpoint): Add optional "thread" parameter. doc/ChangeLog 2017-09-11 Tom Tromey <tom@tromey.com> * python.texi (Events In Python): Document new events. testsuite/ChangeLog 2017-09-11 Tom Tromey <tom@tromey.com> * gdb.python/py-infthread.exp: Add tests for new_thread event. * gdb.python/py-inferior.exp: Add tests for new inferior events.
2017-09-04Document "no debug info debugging" improvementsPedro Alves2-10/+113
Here's the documentation bits for all the improvements done in previous commits. Note that the original "weak alias functions" paragraph ends up disappearing, because this patch, which I'm considering kind of part of this series, makes the alias case Just Work: https://sourceware.org/ml/gdb-patches/2017-07/msg00018.html gdb/ChangeLog: 2017-09-04 Pedro Alves <palves@redhat.com> * NEWS (Safer support for debugging with no debug info): New. gdb/doc/ChangeLog: 2017-09-04 Pedro Alves <palves@redhat.com> * gdb.texinfo (Variables) <Program Variables>: Document inspecting no-debug-info variables. (Symbols) <Examining the Symbol Table>: Document inspecting no-debug-info types. (Calling) <Calling functions with no debug info>: New subsection, documenting calling no-debug-info functions. (Non-debug DLL Symbols) <Working with Minimal Symbols>: Update.
2017-08-31Implement the ability to set/unset environment variables to GDBserver when ↵Sergio Durigan Junior2-0/+127
starting the inferior This patch implements the ability to set/unset environment variables on the remote target, mimicking what GDB already offers to the user. There are two features present here: user-set and user-unset environment variables. User-set environment variables are only the variables that are explicitly set by the user, using the 'set environment' command. This means that variables that were already present in the environment when starting GDB/GDBserver are not transmitted/considered by this feature. User-unset environment variables are variables that are explicitly unset by the user, using the 'unset environment' command. The idea behind this patch is to store user-set and user-unset environment variables in two separate sets, both part of gdb_environ. Then, when extended_remote_create_inferior is preparing to start the inferior, it will iterate over the two sets and set/unset variables accordingly. Three new packets are introduced: - QEnvironmentHexEncoded, which is used to set environment variables, and contains an hex-encoded string in the format "VAR=VALUE" (VALUE can be empty if the user set a variable with a null value, by doing 'set environment VAR='). - QEnvironmentUnset, which is used to unset environment variables, and contains an hex-encoded string in the format "VAR". - QEnvironmentReset, which is always the first packet to be transmitted, and is used to reset the environment, i.e., discard any changes made by the user on previous runs. The QEnvironmentHexEncoded packet is inspired on LLDB's extensions to the RSP. Details about it can be seen here: <https://raw.githubusercontent.com/llvm-mirror/lldb/master/docs/lldb-gdb-remote.txt> I decided not to implement the QEnvironment packet because it is considered deprecated by LLDB. This packet, on LLDB, serves the same purpose of QEnvironmentHexEncoded, but sends the information using a plain text, non-hex-encoded string. The other two packets are new. This patch also includes updates to the documentation, testsuite, and unit tests, without introducing regressions. gdb/ChangeLog: 2017-08-31 Sergio Durigan Junior <sergiodj@redhat.com> * NEWS (Changes since GDB 8.0): Add entry mentioning new support for setting/unsetting environment variables on the remote target. (New remote packets): Add entries for QEnvironmentHexEncoded, QEnvironmentUnset and QEnvironmentReset. * common/environ.c (gdb_environ::operator=): Extend method to handle m_user_set_env_list and m_user_unset_env_list. (gdb_environ::clear): Likewise. (match_var_in_string): Change type of first parameter from 'char *' to 'const char *'. (gdb_environ::set): Extend method to handle m_user_set_env_list and m_user_unset_env_list. (gdb_environ::unset): Likewise. (gdb_environ::clear_user_set_env): New method. (gdb_environ::user_set_envp): Likewise. (gdb_environ::user_unset_envp): Likewise. * common/environ.h (gdb_environ): Handle m_user_set_env_list and m_user_unset_env_list on move constructor/assignment. (unset): Add new default parameter 'update_unset_list = true'. (clear_user_set_env): New method. (user_set_envp): Likewise. (user_unset_envp): Likewise. (m_user_set_env_list): New std::set. (m_user_unset_env_list): Likewise. * common/rsp-low.c (hex2str): New function. (bin2hex): New overload for bin2hex function. * common/rsp-low.c (hex2str): New prototype. (str2hex): New overload prototype. * remote.c: Include "environ.h". Add QEnvironmentHexEncoded, QEnvironmentUnset and QEnvironmentReset. (remote_protocol_features): Add QEnvironmentHexEncoded, QEnvironmentUnset and QEnvironmentReset packets. (send_environment_packet): New function. (extended_remote_environment_support): Likewise. (extended_remote_create_inferior): Call extended_remote_environment_support. (_initialize_remote): Add QEnvironmentHexEncoded, QEnvironmentUnset and QEnvironmentReset packet configs. * unittests/environ-selftests.c (gdb_selftest_env_var): New variable. (test_vector_initialization): New function. (test_init_from_host_environ): Likewise. (test_reinit_from_host_environ): Likewise. (test_set_A_unset_B_unset_A_cannot_find_A_can_find_B): Likewise. (test_unset_set_empty_vector): Likewise. (test_vector_clear): Likewise. (test_std_move): Likewise. (test_move_constructor): (test_self_move): Likewise. (test_set_unset_reset): Likewise. (run_tests): Rewrite in terms of the functions above. gdb/gdbserver/ChangeLog: 2017-08-31 Sergio Durigan Junior <sergiodj@redhat.com> * server.c (handle_general_set): Handle QEnvironmentHexEncoded, QEnvironmentUnset and QEnvironmentReset packets. (handle_query): Inform remote that QEnvironmentHexEncoded, QEnvironmentUnset and QEnvironmentReset are supported. gdb/doc/ChangeLog: 2017-08-31 Sergio Durigan Junior <sergiodj@redhat.com> * gdb.texinfo (set environment): Add @anchor. Explain that environment variables set by the user are sent to GDBserver. (unset environment): Likewise, but for unsetting variables. (Connecting) <Remote Packet>: Add "environment-hex-encoded", "QEnvironmentHexEncoded", "environment-unset", "QEnvironmentUnset", "environment-reset" and "QEnvironmentReset" to the table. (Remote Protocol) <QEnvironmentHexEncoded, QEnvironmentUnset, QEnvironmentReset>: New item, explaining the packet. gdb/testsuite/ChangeLog: 2017-08-31 Sergio Durigan Junior <sergiodj@redhat.com> * gdb.base/share-env-with-gdbserver.c: New file. * gdb.base/share-env-with-gdbserver.exp: Likewise.
2017-08-23compile: Add 'set compile-gcc'Jan Kratochvil2-6/+36
As discussed in How to use compile & execute function in GDB https://sourceware.org/ml/gdb/2015-04/msg00026.html GDB currently searches for compilers on /usr/bin/ARCH-OS-gcc and chooses a match from there. However, it is not currently possible for the user to override which compiler to use. This is what this patch implements. It is also a sync between GCC's and GDB's interfaces. gdb/ChangeLog 2017-08-23 Jan Kratochvil <jan.kratochvil@redhat.com> * NEWS (Changes since GDB 7.9): Add set compile-gcc and show compile-gcc. * compile/compile.c (compile_gcc, show_compile_gcc): New. (compile_to_object): Implement compile_gcc. (_initialize_compile): Install "set compile-gcc". Initialize compile_gcc. gdb/doc/ChangeLog 2017-08-23 Jan Kratochvil <jan.kratochvil@redhat.com> * gdb.texinfo (Compiling and Injecting Code): Add to subsection "Compiler search for the compile command" descriptions of set compile-gcc and show compile-gcc. include/ChangeLog 2017-08-23 Jan Kratochvil <jan.kratochvil@redhat.com> * gcc-interface.h (enum gcc_base_api_version): Update comment for GCC_FE_VERSION_1. (struct gcc_base_vtable): Rename set_arguments to set_arguments_v0. Add set_arguments, set_triplet_regexp and set_driver_filename.
2017-08-23gdb: SPARC ADI supportWeimin Pan2-0/+79
The M7 processor supports an Application Data Integrity (ADI) feature that detects invalid data accesses. When software allocates data, it chooses a 4-bit version number, sets the version in the upper 4 bits of the 64-bit pointer to that data, and stores the 4-bit version in every cacheline of the object. Hardware saves the latter in spare bits in the cache and memory hierarchy. On each load and store, the processor compares the upper 4 VA (virtual address) bits to the cacheline's version. If there is a mismatch, the processor generates a version mismatch trap which can be either precise or disrupting. The trap is an error condition which the kernel delivers to the process as a SIGSEGV signal. The upper 4 bits of the VA represent a version and are not part of the true address. The processor clears these bits and sign extends bit 59 to generate the true address. Note that 32-bit applications cannot use ADI. This patch adds ADI support in gdb which allows the user to examine current version tags and assign new version tags in the program. It also catches and reports precise or disrupting memory corruption traps. gdb/ChangeLog: 2017-08-07 Weimin Pan <weimin.pan@oracle.com> * sparc64-tdep.h: (adi_normalize_address): New export. * sparc-nat.h: (open_adi_tag_fd): New export. * sparc64-linux-nat.c: (open_adi_tag_fd): New function. * sparc64-linux-tdep.c: (SEGV_ACCADI, SEGV_ADIDERR, SEGV_ADIPERR) New defines. (sparc64_linux_handle_segmentation_fault): New function. (sparc64_linux_init_abi): Register sparc64_linux_handle_segmentation_fault * sparc64-tdep.c: Include cli-utils.h,gdbcmd.h,auxv.h. (sparc64_addr_bits_remove): New function. (sparc64_init_abi): Register sparc64_addr_bits_remove. (MAX_PROC_NAME_SIZE): New macro. (AT_ADI_BLKSZ, AT_ADI_NBITS, AT_ADI_UEONADI) New defines. (sparc64adilist): New variable. (adi_proc_list): New variable. (find_adi_info): New function. (add_adi_info): New function. (get_adi_info_proc): New function. (get_adi_info): New function. (info_adi_command): New function. (read_maps_entry): New function. (adi_available): New function. (adi_normalize_address): New function. (adi_align_address): New function. (adi_convert_byte_count): New function. (adi_tag_fd): New function. (adi_is_addr_mapped): New function. (adi_read_versions): New function. (adi_write_versions): New function. (adi_print_versions): New function. (do_examine): New function. (do_assign): New function. (adi_examine_command): New function. (adi_assign_command): New function. (_initialize_sparc64_adi_tdep): New function. gdb/doc/ChangeLog: 2017-08-07 Weimin Pan <weimin.pan@oracle.com> * gdb.texinfo (Architectures): Add new Sparc64 section to document ADI support. * NEWS: Add "adi examine" and "adi assign" commands. gdb/testsuite/ChangeLog: 2017-08-07 Weimin Pan <weimin.pan@oracle.com> * gdb.arch/sparc64-adi.exp: New file. * gdb.arch/sparc64-adi.c: New file.
2017-08-18GDBserver self testsYao Qi2-0/+13
This patch uses GDB self test in GDBserver. The self tests are run if GDBserver is started with option --selftest. gdb: 2017-08-18 Yao Qi <yao.qi@linaro.org> * NEWS: Mention GDBserver's new option "--selftest". * Makefile.in (SFILES): Remove selftest.c, add common/selftest.c. * selftest.c: Move it to common/selftest.c. * selftest.h: Move it to common/selftest.h. * selftest-arch.c (reset): New function. (tests_with_arch): Call reset. gdb/gdbserver: 2017-08-18 Yao Qi <yao.qi@linaro.org> * Makefile.in (OBS): Add selftest.o. * configure.ac: AC_DEFINE GDB_SELF_TEST if $development. * configure, config.in: Re-generated. * server.c: Include common/sefltest.h. (captured_main): Handle option --selftest. gdb/testsuite: 2017-08-18 Yao Qi <yao.qi@linaro.org> * gdb.server/unittest.exp: New. gdb/doc: 2017-08-18 Yao Qi <yao.qi@linaro.org> * gdb.texinfo (Server): Document "--selftest".
2017-08-16Add shortcuts for "nexti" and "stepi" commands in Single-Key modeRuslan Kabatsayev2-0/+13
Currently, "layout asm" is not so useful as "layout src" with Single-Key mode: you have to use multi-key commands like "ni" and "si" to do single-stepping. This patch adds, in addition to "next" and "step" commands, corresponding assembly-level ones - "nexti" and "stepi" - to Single-Key mode, with the shortcuts of "o" (from "step Over") and "i" (from "Step Into") respectively. gdb/ChangeLog: * tui/tui.c (tui_commands): Add "nexti" and "stepi" to the Single-Key mode command list. gdb/doc/ChangeLog: * gdb.texinfo (TUI Single Key Mode): Document the new shortcuts in Single-Key mode.
2017-08-12Fix typo on documentation ("show set startup-with-shell")Sergio Durigan Junior2-1/+7
The documentation was erroneously saying that there is a command named "show set startup-with-shell", while the correct version is "show startup-with-shell". This commit fixes obvious mistake. gdb/doc/ChangeLog: 2017-08-12 Sergio Durigan Junior <sergiodj@redhat.com> PR gdb/21925 * gdb.texinfo (Starting) <startup-with-shell>: Fix typo ("show set...").
2017-08-09doc: Fix copy-pasto in Z0 packet documentationSimon Marchi2-1/+6
The documentation for the cmd_list field of the Z0 packet refers to its content as a conditional expression, which seems like a copy-paste error from the cond_list field. gdb/doc/ChangeLog: * gdb.texinfo (Packets): Fix Z0 cmd_list doc referring to conditional expression.