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binutils-gdb/gdb/break-catch-throw.c

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* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
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/* Everything about catch/throw catchpoints, for GDB.
GDB copyright headers update after running GDB's copyright.py script. gdb/ChangeLog: Update year range in copyright notice of all files.
2016-01-01 05:33:14 +01:00
Copyright (C) 1986-2016 Free Software Foundation, Inc.
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
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This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "arch-utils.h"
#include <ctype.h>
#include "breakpoint.h"
#include "gdbcmd.h"
#include "inferior.h"
#include "annotate.h"
#include "valprint.h"
#include "cli/cli-utils.h"
#include "completer.h"
#include "gdb_obstack.h"
#include "mi/mi-common.h"
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
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#include "linespec.h"
* break-catch-throw.c (struct exception_names): New. (exception_functions): Change type. (re_set_exception_catchpoint): Look for SDT probes.
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#include "probe.h"
PR c++/15176: * NEWS: Update. * break-catch-throw.c (compute_exception): New function. (exception_funcs): New global. (_initialize_break_catch_throw): Create $_exception. * cp-abi.c (cplus_type_from_type_info): New function. * cp-abi.h (cplus_type_from_type_info): Declare. (struct cp_abi_ops) <get_type_from_type_info>: New field. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info) (gnuv3_get_type_from_type_info): New functions. (init_gnuv3_ops): Set get_type_from_type_info ABI field. gdb/doc * gdb.texinfo (Set Catchpoints): Document $_exception. (Convenience Vars): Mention $_exception. gdb/testsuite * gdb.base/default.exp: Update for $_exception. * gdb.cp/exceptprint.cc: New file. * gdb.cp/exceptprint.exp: New file. * lib/gdb.exp (skip_libstdcxx_probe_tests): New proc.
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#include "objfiles.h"
#include "cp-abi.h"
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
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#include "gdb_regex.h"
#include "cp-support.h"
Explicit locations: use new location API This patch converts the code base to use the new struct event_location API being introduced. This patch preserves the current functionality and adds no new features. The "big picture" API usage introduced by this patch may be illustrated with a simple exmaple. Where previously developers would write: void my_command (char *arg, int from_tty) { create_breakpoint (..., arg, ...); ... } one now uses: void my_command (char *arg, int from_tty) { struct event_locaiton *location; struct cleanup *back_to; location = string_to_event_locaiton (&arg, ...); back_to = make_cleanup_delete_event_location (location); create_breakpoint (..., location, ...); do_cleanups (back_to); } Linespec-decoding functions (now called location-decoding) such as decode_line_full no longer skip argument pointers over processed input. That functionality has been moved into string_to_event_location as demonstrated above. gdb/ChangeLog * ax-gdb.c: Include location.h. (agent_command_1) Use linespec location instead of address string. * break-catch-throw.c: Include location.h. (re_set_exception_catchpoint): Use linespec locations instead of address strings. * breakpoint.c: Include location.h. (create_overlay_event_breakpoint, create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_breakpoints_after_exec): Use linespec location instead of address string. (print_breakpoint_location): Use locations and event_location_to_string. Print extra_string for pending locations for non-MI streams. (print_one_breakpoint_location): Use locations and event_location_to_string. (init_raw_breakpoint_without_location): Initialize b->location. (create_thread_event_breakpoint): Use linespec location instead of address string. (init_breakpoint_sal): Likewise. Only save extra_string if it is non-NULL and not the empty string. Use event_location_to_string instead of `addr_string'. Constify `p' and `endp'. Use skip_spaces_const/skip_space_const instead of non-const versions. Copy the location into the breakpoint. If LOCATION is NULL, save the breakpoint address as a linespec location instead of an address string. (create_breakpoint_sal): Change `addr_string' parameter to a struct event_location. All uses updated. (create_breakpoints_sal): Likewise for local variable `addr_string'. (parse_breakpoint_sals): Use locations instead of address strings. Remove check for empty linespec with conditional. Refactor. (decode_static_tracepoint_spec): Make argument const and update function. (create_breakpoint): Change `arg' to a struct event_location and rename. Remove `copy_arg' and `addr_start'. If EXTRA_STRING is empty, set it to NULL. Don't populate `canonical' for pending breakpoints. Pass `extra_string' to find_condition_and_thread. Clear `extra_string' if `rest' was NULL. Do not error with "garbage after location" if setting a dprintf breakpoint. Copy the location into the breakpoint instead of an address string. (break_command_1): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Check against `arg_cp' for a probe linespec. (dprintf_command): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Throw an exception if no format string was specified. (print_recreate_ranged_breakpoint): Use event_location_to_string instead of address strings. (break_range_command, until_break_command) (init_ada_exception_breakpoint): Use locations instead of address strings. (say_where): Print out extra_string for pending locations. (base_breakpoint_dtor): Delete `location' and `location_range_end' of the breakpoint. (base_breakpoint_create_sals_from_location): Use struct event_location instead of address string. Remove `addr_start' and `copy_arg' parameters. (base_breakpoint_decode_location): Use struct event_location instead of address string. (bkpt_re_set): Use locations instead of address strings. Use event_location_empty_p to check for unset location. (bkpt_print_recreate): Use event_location_to_string instead of an address string. Print out extra_string for pending locations. (bkpt_create_sals_from_location, bkpt_decode_location) (bkpt_probe_create_sals_from_location): Use struct event_location instead of address string. (bkpt_probe_decode_location): Use struct event_location instead of address string. (tracepoint_print_recreate): Use event_location_to_string to recreate the tracepoint. (tracepoint_create_sals_from_location, tracepoint_decode_location) (tracepoint_probe_create_sals_from_location) (tracepoint_probe_decode_location): Use struct event_location instead of address string. (dprintf_print_recreate): Use event_location_to_string to recreate the dprintf. (dprintf_re_set): Remove check for valid/missing format string. (strace_marker_create_sals_from_location) (strace_marker_create_breakpoints_sal, strace_marker_decode_location) (update_static_tracepoint): Use struct event_location instead of address string. (location_to_sals): Likewise. Pass `extra_string' to find_condition_and_thread. For newly resolved pending breakpoint locations, clear the location's string representation. Assert that the breakpoint's condition string is NULL when condition_not_parsed. (breakpoint_re_set_default, create_sals_from_location_default) (decode_location_default, trace_command, ftrace_command) (strace_command, create_tracepoint_from_upload): Use locations instead of address strings. * breakpoint.h (struct breakpoint_ops) <create_sals_from_location>: Use struct event_location instead of address string. Update all uses. <decode_location>: Likewise. (struct breakpoint) <addr_string>: Change to struct event_location and rename `location'. <addr_string_range_end>: Change to struct event_location and rename `location_range_end'. (create_breakpoint): Use struct event_location instead of address string. * cli/cli-cmds.c: Include location.h. (edit_command, list_command): Use locations instead of address strings. * elfread.c: Include location.h. (elf_gnu_ifunc_resolver_return_stop): Use event_location_to_string. * guile/scm-breakpoint.c: Include location.h. (bpscm_print_breakpoint_smob): Use event_location_to_string. (gdbscm_register_breakpoint): Use locations instead of address strings. * linespec.c: Include location.h. (struct ls_parser) <stream>: Change to const char *. (PARSER_STREAM): Update. (lionespec_lexer_lex_keyword): According to find_condition_and_thread, keywords must be followed by whitespace. (canonicalize_linespec): Save a linespec location into `canonical'. Save a canonical linespec into `canonical'. (parse_linespec): Change `argptr' to const char * and rename `arg'. All uses updated. Update function description. (linespec_parser_new): Initialize `parser'. Update initialization of parsing stream. (event_location_to_sals): New function. (decode_line_full): Change `argptr' to a struct event_location and rename it `location'. Use locations instead of address strings. Call event_location_to_sals instead of parse_linespec. (decode_line_1): Likewise. (decode_line_with_current_source, decode_line_with_last_displayed) Use locations instead of address strings. (decode_objc): Likewise. Change `argptr' to const char * and rename `arg'. (destroy_linespec_result): Delete the linespec result's location instead of freeing the address string. * linespec.h (struct linespec_result) <addr_string>: Change to struct event_location and rename to ... <location>: ... this. (decode_line_1, decode_line_full): Change `argptr' to struct event_location. All callers updated. * mi/mi-cmd-break.c: Include language.h, location.h, and linespec.h. (mi_cmd_break_insert_1): Use locations instead of address strings. Throw an error if there was "garbage" at the end of the specified linespec. * probe.c: Include location.h. (parse_probes): Change `argptr' to struct event_location. Use event locations instead of address strings. * probe.h (parse_probes): Change `argptr' to struct event_location. * python/py-breakpoint.c: Include location.h. (bppy_get_location): Constify local variable `str'. Use event_location_to_string. (bppy_init): Use locations instead of address strings. * python/py-finishbreakpoint.c: Include location.h. (bpfinishpy_init): Remove local variable `addr_str'. Use locations instead of address strings. * python/python.c: Include location.h. (gdbpy_decode_line): Use locations instead of address strings. * remote.c: Include location.h. (remote_download_tracepoint): Use locations instead of address strings. * spu-tdep.c: Include location.h. (spu_catch_start): Remove local variable `buf'. Use locations instead of address strings. * tracepoint.c: Include location.h. (scope_info): Use locations instead of address strings. (encode_source_string): Constify parameter `src'. * tracepoint.h (encode_source_string): Likewise. gdb/testsuite/ChangeLog * gdb.base/dprintf-pending.exp: Update dprintf "without format" test. Add tests for missing ",FMT" and ",".
2015-08-12 02:09:35 +02:00
#include "location.h"
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
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/* Enums for exception-handling support. */
enum exception_event_kind
{
EX_EVENT_THROW,
EX_EVENT_RETHROW,
EX_EVENT_CATCH
};
* break-catch-throw.c (struct exception_names): New. (exception_functions): Change type. (re_set_exception_catchpoint): Look for SDT probes.
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/* Each spot where we may place an exception-related catchpoint has
two names: the SDT probe point and the function name. This
structure holds both. */
struct exception_names
{
/* The name of the probe point to try, in the form accepted by
'parse_probes'. */
const char *probe;
/* The name of the corresponding function. */
const char *function;
};
/* Names of the probe points and functions on which to break. This is
indexed by exception_event_kind. */
static const struct exception_names exception_functions[] =
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
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{
* break-catch-throw.c (struct exception_names): New. (exception_functions): Change type. (re_set_exception_catchpoint): Look for SDT probes.
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{ "-probe-stap libstdcxx:throw", "__cxa_throw" },
{ "-probe-stap libstdcxx:rethrow", "__cxa_rethrow" },
{ "-probe-stap libstdcxx:catch", "__cxa_begin_catch" }
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
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};
static struct breakpoint_ops gnu_v3_exception_catchpoint_ops;
/* The type of an exception catchpoint. */
struct exception_catchpoint
{
/* The base class. */
struct breakpoint base;
/* The kind of exception catchpoint. */
enum exception_event_kind kind;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
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/* If non-NULL, an xmalloc'd string holding the source form of the
regular expression to match against. */
char *exception_rx;
/* If non-NULL, an xmalloc'd, compiled regular expression which is
used to determine which exceptions to stop on. */
regex_t *pattern;
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
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};
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
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/* A helper function that fetches exception probe arguments. This
fills in *ARG0 (if non-NULL) and *ARG1 (which must be non-NULL).
It will throw an exception on any kind of failure. */
static void
fetch_probe_arguments (struct value **arg0, struct value **arg1)
{
struct frame_info *frame = get_selected_frame (_("No frame selected"));
CORE_ADDR pc = get_frame_pc (frame);
change probes to be program-space-independent This changes the probes to be independent of the program space. After this, when a probe's address is needed, it is determined by applying offsets at the point of use. This introduces a bound_probe object, similar to bound minimal symbols. Objects of this type are used when it's necessary to pass a probe and its corresponding objfile. This removes the backlink from probe to objfile, which was primarily used to fetch the architecture to use. This adds a get_probe_address function which calls a probe method to compute the probe's relocated address. Similarly, it adds an objfile parameter to the semaphore methods so they can do the relocation properly as well. 2014-03-03 Tom Tromey <tromey@redhat.com> * break-catch-throw.c (fetch_probe_arguments): Use bound probes. * breakpoint.c (create_longjmp_master_breakpoint): Use get_probe_address. (add_location_to_breakpoint, bkpt_probe_insert_location) (bkpt_probe_remove_location): Update. * breakpoint.h (struct bp_location) <probe>: Now a bound_probe. * elfread.c (elf_symfile_relocate_probe): Remove. (elf_probe_fns): Update. (insert_exception_resume_breakpoint): Change type of "probe" parameter to bound_probe. (check_exception_resume): Update. * objfiles.c (objfile_relocate1): Don't relocate probes. * probe.c (bound_probe_s): New typedef. (parse_probes): Use get_probe_address. Set sal's objfile. (find_probe_by_pc): Return a bound_probe. (collect_probes): Return a VEC(bound_probe_s). (compare_probes): Update. (gen_ui_out_table_header_info): Change type of "probes" parameter. Update. (info_probes_for_ops): Update. (get_probe_address): New function. (probe_safe_evaluate_at_pc): Update. * probe.h (struct probe_ops) <get_probe_address>: New field. <set_semaphore, clear_semaphore>: Add objfile parameter. (struct probe) <objfile>: Remove field. <arch>: New field. <address>: Update comment. (struct bound_probe): New. (find_probe_by_pc): Return a bound_probe. (get_probe_address): Declare. * solib-svr4.c (struct probe_and_action) <address>: New field. (hash_probe_and_action, equal_probe_and_action): Update. (register_solib_event_probe): Add address parameter. (solib_event_probe_at): Update. (svr4_create_probe_breakpoints): Add objfile parameter. Use get_probe_address. * stap-probe.c (struct stap_probe) <sem_addr>: Update comment. (stap_get_probe_address): New function. (stap_can_evaluate_probe_arguments, compute_probe_arg) (compile_probe_arg): Update. (stap_set_semaphore, stap_clear_semaphore): Compute semaphore's address. (handle_stap_probe): Don't relocate the probe. (stap_relocate): Remove. (stap_gen_info_probes_table_values): Update. (stap_probe_ops): Remove stap_relocate. * symfile-debug.c (debug_sym_relocate_probe): Remove. (debug_sym_probe_fns): Update. * symfile.h (struct sym_probe_fns) <sym_relocate_probe>: Remove. * symtab.c (init_sal): Use memset. * symtab.h (struct symtab_and_line) <objfile>: New field. * tracepoint.c (start_tracing, stop_tracing): Update.
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struct bound_probe pc_probe;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
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unsigned n_args;
pc_probe = find_probe_by_pc (pc);
change probes to be program-space-independent This changes the probes to be independent of the program space. After this, when a probe's address is needed, it is determined by applying offsets at the point of use. This introduces a bound_probe object, similar to bound minimal symbols. Objects of this type are used when it's necessary to pass a probe and its corresponding objfile. This removes the backlink from probe to objfile, which was primarily used to fetch the architecture to use. This adds a get_probe_address function which calls a probe method to compute the probe's relocated address. Similarly, it adds an objfile parameter to the semaphore methods so they can do the relocation properly as well. 2014-03-03 Tom Tromey <tromey@redhat.com> * break-catch-throw.c (fetch_probe_arguments): Use bound probes. * breakpoint.c (create_longjmp_master_breakpoint): Use get_probe_address. (add_location_to_breakpoint, bkpt_probe_insert_location) (bkpt_probe_remove_location): Update. * breakpoint.h (struct bp_location) <probe>: Now a bound_probe. * elfread.c (elf_symfile_relocate_probe): Remove. (elf_probe_fns): Update. (insert_exception_resume_breakpoint): Change type of "probe" parameter to bound_probe. (check_exception_resume): Update. * objfiles.c (objfile_relocate1): Don't relocate probes. * probe.c (bound_probe_s): New typedef. (parse_probes): Use get_probe_address. Set sal's objfile. (find_probe_by_pc): Return a bound_probe. (collect_probes): Return a VEC(bound_probe_s). (compare_probes): Update. (gen_ui_out_table_header_info): Change type of "probes" parameter. Update. (info_probes_for_ops): Update. (get_probe_address): New function. (probe_safe_evaluate_at_pc): Update. * probe.h (struct probe_ops) <get_probe_address>: New field. <set_semaphore, clear_semaphore>: Add objfile parameter. (struct probe) <objfile>: Remove field. <arch>: New field. <address>: Update comment. (struct bound_probe): New. (find_probe_by_pc): Return a bound_probe. (get_probe_address): Declare. * solib-svr4.c (struct probe_and_action) <address>: New field. (hash_probe_and_action, equal_probe_and_action): Update. (register_solib_event_probe): Add address parameter. (solib_event_probe_at): Update. (svr4_create_probe_breakpoints): Add objfile parameter. Use get_probe_address. * stap-probe.c (struct stap_probe) <sem_addr>: Update comment. (stap_get_probe_address): New function. (stap_can_evaluate_probe_arguments, compute_probe_arg) (compile_probe_arg): Update. (stap_set_semaphore, stap_clear_semaphore): Compute semaphore's address. (handle_stap_probe): Don't relocate the probe. (stap_relocate): Remove. (stap_gen_info_probes_table_values): Update. (stap_probe_ops): Remove stap_relocate. * symfile-debug.c (debug_sym_relocate_probe): Remove. (debug_sym_probe_fns): Update. * symfile.h (struct sym_probe_fns) <sym_relocate_probe>: Remove. * symtab.c (init_sal): Use memset. * symtab.h (struct symtab_and_line) <objfile>: New field. * tracepoint.c (start_tracing, stop_tracing): Update.
2013-12-02 21:58:59 +01:00
if (pc_probe.probe == NULL
|| strcmp (pc_probe.probe->provider, "libstdcxx") != 0
|| (strcmp (pc_probe.probe->name, "catch") != 0
&& strcmp (pc_probe.probe->name, "throw") != 0
&& strcmp (pc_probe.probe->name, "rethrow") != 0))
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
error (_("not stopped at a C++ exception catchpoint"));
change probes to be program-space-independent This changes the probes to be independent of the program space. After this, when a probe's address is needed, it is determined by applying offsets at the point of use. This introduces a bound_probe object, similar to bound minimal symbols. Objects of this type are used when it's necessary to pass a probe and its corresponding objfile. This removes the backlink from probe to objfile, which was primarily used to fetch the architecture to use. This adds a get_probe_address function which calls a probe method to compute the probe's relocated address. Similarly, it adds an objfile parameter to the semaphore methods so they can do the relocation properly as well. 2014-03-03 Tom Tromey <tromey@redhat.com> * break-catch-throw.c (fetch_probe_arguments): Use bound probes. * breakpoint.c (create_longjmp_master_breakpoint): Use get_probe_address. (add_location_to_breakpoint, bkpt_probe_insert_location) (bkpt_probe_remove_location): Update. * breakpoint.h (struct bp_location) <probe>: Now a bound_probe. * elfread.c (elf_symfile_relocate_probe): Remove. (elf_probe_fns): Update. (insert_exception_resume_breakpoint): Change type of "probe" parameter to bound_probe. (check_exception_resume): Update. * objfiles.c (objfile_relocate1): Don't relocate probes. * probe.c (bound_probe_s): New typedef. (parse_probes): Use get_probe_address. Set sal's objfile. (find_probe_by_pc): Return a bound_probe. (collect_probes): Return a VEC(bound_probe_s). (compare_probes): Update. (gen_ui_out_table_header_info): Change type of "probes" parameter. Update. (info_probes_for_ops): Update. (get_probe_address): New function. (probe_safe_evaluate_at_pc): Update. * probe.h (struct probe_ops) <get_probe_address>: New field. <set_semaphore, clear_semaphore>: Add objfile parameter. (struct probe) <objfile>: Remove field. <arch>: New field. <address>: Update comment. (struct bound_probe): New. (find_probe_by_pc): Return a bound_probe. (get_probe_address): Declare. * solib-svr4.c (struct probe_and_action) <address>: New field. (hash_probe_and_action, equal_probe_and_action): Update. (register_solib_event_probe): Add address parameter. (solib_event_probe_at): Update. (svr4_create_probe_breakpoints): Add objfile parameter. Use get_probe_address. * stap-probe.c (struct stap_probe) <sem_addr>: Update comment. (stap_get_probe_address): New function. (stap_can_evaluate_probe_arguments, compute_probe_arg) (compile_probe_arg): Update. (stap_set_semaphore, stap_clear_semaphore): Compute semaphore's address. (handle_stap_probe): Don't relocate the probe. (stap_relocate): Remove. (stap_gen_info_probes_table_values): Update. (stap_probe_ops): Remove stap_relocate. * symfile-debug.c (debug_sym_relocate_probe): Remove. (debug_sym_probe_fns): Update. * symfile.h (struct sym_probe_fns) <sym_relocate_probe>: Remove. * symtab.c (init_sal): Use memset. * symtab.h (struct symtab_and_line) <objfile>: New field. * tracepoint.c (start_tracing, stop_tracing): Update.
2013-12-02 21:58:59 +01:00
n_args = get_probe_argument_count (pc_probe.probe, frame);
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
if (n_args < 2)
error (_("C++ exception catchpoint has too few arguments"));
if (arg0 != NULL)
change probes to be program-space-independent This changes the probes to be independent of the program space. After this, when a probe's address is needed, it is determined by applying offsets at the point of use. This introduces a bound_probe object, similar to bound minimal symbols. Objects of this type are used when it's necessary to pass a probe and its corresponding objfile. This removes the backlink from probe to objfile, which was primarily used to fetch the architecture to use. This adds a get_probe_address function which calls a probe method to compute the probe's relocated address. Similarly, it adds an objfile parameter to the semaphore methods so they can do the relocation properly as well. 2014-03-03 Tom Tromey <tromey@redhat.com> * break-catch-throw.c (fetch_probe_arguments): Use bound probes. * breakpoint.c (create_longjmp_master_breakpoint): Use get_probe_address. (add_location_to_breakpoint, bkpt_probe_insert_location) (bkpt_probe_remove_location): Update. * breakpoint.h (struct bp_location) <probe>: Now a bound_probe. * elfread.c (elf_symfile_relocate_probe): Remove. (elf_probe_fns): Update. (insert_exception_resume_breakpoint): Change type of "probe" parameter to bound_probe. (check_exception_resume): Update. * objfiles.c (objfile_relocate1): Don't relocate probes. * probe.c (bound_probe_s): New typedef. (parse_probes): Use get_probe_address. Set sal's objfile. (find_probe_by_pc): Return a bound_probe. (collect_probes): Return a VEC(bound_probe_s). (compare_probes): Update. (gen_ui_out_table_header_info): Change type of "probes" parameter. Update. (info_probes_for_ops): Update. (get_probe_address): New function. (probe_safe_evaluate_at_pc): Update. * probe.h (struct probe_ops) <get_probe_address>: New field. <set_semaphore, clear_semaphore>: Add objfile parameter. (struct probe) <objfile>: Remove field. <arch>: New field. <address>: Update comment. (struct bound_probe): New. (find_probe_by_pc): Return a bound_probe. (get_probe_address): Declare. * solib-svr4.c (struct probe_and_action) <address>: New field. (hash_probe_and_action, equal_probe_and_action): Update. (register_solib_event_probe): Add address parameter. (solib_event_probe_at): Update. (svr4_create_probe_breakpoints): Add objfile parameter. Use get_probe_address. * stap-probe.c (struct stap_probe) <sem_addr>: Update comment. (stap_get_probe_address): New function. (stap_can_evaluate_probe_arguments, compute_probe_arg) (compile_probe_arg): Update. (stap_set_semaphore, stap_clear_semaphore): Compute semaphore's address. (handle_stap_probe): Don't relocate the probe. (stap_relocate): Remove. (stap_gen_info_probes_table_values): Update. (stap_probe_ops): Remove stap_relocate. * symfile-debug.c (debug_sym_relocate_probe): Remove. (debug_sym_probe_fns): Update. * symfile.h (struct sym_probe_fns) <sym_relocate_probe>: Remove. * symtab.c (init_sal): Use memset. * symtab.h (struct symtab_and_line) <objfile>: New field. * tracepoint.c (start_tracing, stop_tracing): Update.
2013-12-02 21:58:59 +01:00
*arg0 = evaluate_probe_argument (pc_probe.probe, 0, frame);
*arg1 = evaluate_probe_argument (pc_probe.probe, 1, frame);
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
if ((arg0 != NULL && *arg0 == NULL) || *arg1 == NULL)
error (_("error computing probe argument at c++ exception catchpoint"));
}
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
/* A helper function that returns a value indicating the kind of the
exception catchpoint B. */
static enum exception_event_kind
classify_exception_breakpoint (struct breakpoint *b)
{
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
struct exception_catchpoint *cp = (struct exception_catchpoint *) b;
return cp->kind;
}
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
/* Implement the 'dtor' method. */
static void
dtor_exception_catchpoint (struct breakpoint *self)
{
struct exception_catchpoint *cp = (struct exception_catchpoint *) self;
xfree (cp->exception_rx);
if (cp->pattern != NULL)
regfree (cp->pattern);
bkpt_breakpoint_ops.dtor (self);
}
/* Implement the 'check_status' method. */
static void
check_status_exception_catchpoint (struct bpstats *bs)
{
struct exception_catchpoint *self
= (struct exception_catchpoint *) bs->breakpoint_at;
C++ keyword cleanliness, mostly auto-generated This patch renames symbols that happen to have names which are reserved keywords in C++. Most of this was generated with Tromey's cxx-conversion.el script. Some places where later hand massaged a bit, to fix formatting, etc. And this was rebased several times meanwhile, along with re-running the script, so re-running the script from scratch probably does not result in the exact same output. I don't think that matters anyway. gdb/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout. gdb/gdbserver/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout.
2015-02-27 17:33:07 +01:00
char *type_name = NULL;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
bkpt_breakpoint_ops.check_status (bs);
if (bs->stop == 0)
return;
if (self->pattern == NULL)
return;
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
TRY
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
{
struct value *typeinfo_arg;
char *canon;
fetch_probe_arguments (NULL, &typeinfo_arg);
C++ keyword cleanliness, mostly auto-generated This patch renames symbols that happen to have names which are reserved keywords in C++. Most of this was generated with Tromey's cxx-conversion.el script. Some places where later hand massaged a bit, to fix formatting, etc. And this was rebased several times meanwhile, along with re-running the script, so re-running the script from scratch probably does not result in the exact same output. I don't think that matters anyway. gdb/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout. gdb/gdbserver/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout.
2015-02-27 17:33:07 +01:00
type_name = cplus_typename_from_type_info (typeinfo_arg);
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
C++ keyword cleanliness, mostly auto-generated This patch renames symbols that happen to have names which are reserved keywords in C++. Most of this was generated with Tromey's cxx-conversion.el script. Some places where later hand massaged a bit, to fix formatting, etc. And this was rebased several times meanwhile, along with re-running the script, so re-running the script from scratch probably does not result in the exact same output. I don't think that matters anyway. gdb/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout. gdb/gdbserver/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout.
2015-02-27 17:33:07 +01:00
canon = cp_canonicalize_string (type_name);
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
if (canon != NULL)
{
C++ keyword cleanliness, mostly auto-generated This patch renames symbols that happen to have names which are reserved keywords in C++. Most of this was generated with Tromey's cxx-conversion.el script. Some places where later hand massaged a bit, to fix formatting, etc. And this was rebased several times meanwhile, along with re-running the script, so re-running the script from scratch probably does not result in the exact same output. I don't think that matters anyway. gdb/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout. gdb/gdbserver/ 2015-02-27 Tom Tromey <tromey@redhat.com> Pedro Alves <palves@redhat.com> Rename symbols whose names are reserved C++ keywords throughout.
2015-02-27 17:33:07 +01:00
xfree (type_name);
type_name = canon;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
}
}
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
CATCH (e, RETURN_MASK_ERROR)
{
exception_print (gdb_stderr, e);
}
END_CATCH
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
Normalize TRY_CATCH exception handling block This normalizes some exception catch blocks that check for ex.reason to look like this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ALL) { ... } if (ex.reason < 0) { ... } ~~~ This is a preparation step for running a script that converts all TRY_CATCH uses to look like this instead: ~~~ TRY { ... } CATCH (ex, RETURN_MASK_ALL) { ... } END_CATCH ~~~ The motivation for that change is being able to reimplent TRY/CATCH in terms of C++ try/catch. This commit makes it so that: - no condition other than ex.reason < 0 is checked in the if predicate - there's no "else" block to check whether no exception was caught - there's no code between the TRY_CATCH (TRY) block and the 'if (ex.reason < 0)' block (CATCH). - the exception object is no longer referred to outside the if/catch block. Note the local volatile exception objects that are currently defined inside functions that use TRY_CATCH will disappear. In cases it's more convenient to still refer to the exception outside the catch block, a new non-volatile local is added and copy to that object is made within the catch block. The following patches should make this all clearer. gdb/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> * amd64-tdep.c (amd64_frame_cache, amd64_sigtramp_frame_cache) (amd64_epilogue_frame_cache): Normal exception handling code. * break-catch-throw.c (check_status_exception_catchpoint) (re_set_exception_catchpoint): Ditto. * cli/cli-interp.c (safe_execute_command): * cli/cli-script.c (script_from_file): Ditto. * compile/compile-c-symbols.c (generate_c_for_for_one_variable): Ditto. * compile/compile-object-run.c (compile_object_run): Ditto. * cp-abi.c (baseclass_offset): Ditto. * cp-valprint.c (cp_print_value): Ditto. * exceptions.c (catch_exceptions_with_msg): * frame-unwind.c (frame_unwind_try_unwinder): Ditto. * frame.c (get_frame_address_in_block_if_available): Ditto. * i386-tdep.c (i386_frame_cache, i386_epilogue_frame_cache) (i386_sigtramp_frame_cache): Ditto. * infcmd.c (post_create_inferior): Ditto. * linespec.c (parse_linespec, find_linespec_symbols): * p-valprint.c (pascal_object_print_value): Ditto. * parse.c (parse_expression_for_completion): Ditto. * python/py-finishbreakpoint.c (bpfinishpy_init): Ditto. * remote.c (remote_get_noisy_reply): Ditto. * s390-linux-tdep.c (s390_frame_unwind_cache): Ditto. * solib-svr4.c (solib_svr4_r_map): Ditto.
2015-03-07 15:50:04 +01:00
if (type_name != NULL)
{
if (regexec (self->pattern, type_name, 0, NULL, 0) != 0)
bs->stop = 0;
xfree (type_name);
}
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
}
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
/* Implement the 're_set' method. */
static void
re_set_exception_catchpoint (struct breakpoint *self)
{
struct symtabs_and_lines sals = {0};
struct symtabs_and_lines sals_end = {0};
struct cleanup *cleanup;
enum exception_event_kind kind = classify_exception_breakpoint (self);
Explicit locations: use new location API This patch converts the code base to use the new struct event_location API being introduced. This patch preserves the current functionality and adds no new features. The "big picture" API usage introduced by this patch may be illustrated with a simple exmaple. Where previously developers would write: void my_command (char *arg, int from_tty) { create_breakpoint (..., arg, ...); ... } one now uses: void my_command (char *arg, int from_tty) { struct event_locaiton *location; struct cleanup *back_to; location = string_to_event_locaiton (&arg, ...); back_to = make_cleanup_delete_event_location (location); create_breakpoint (..., location, ...); do_cleanups (back_to); } Linespec-decoding functions (now called location-decoding) such as decode_line_full no longer skip argument pointers over processed input. That functionality has been moved into string_to_event_location as demonstrated above. gdb/ChangeLog * ax-gdb.c: Include location.h. (agent_command_1) Use linespec location instead of address string. * break-catch-throw.c: Include location.h. (re_set_exception_catchpoint): Use linespec locations instead of address strings. * breakpoint.c: Include location.h. (create_overlay_event_breakpoint, create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_breakpoints_after_exec): Use linespec location instead of address string. (print_breakpoint_location): Use locations and event_location_to_string. Print extra_string for pending locations for non-MI streams. (print_one_breakpoint_location): Use locations and event_location_to_string. (init_raw_breakpoint_without_location): Initialize b->location. (create_thread_event_breakpoint): Use linespec location instead of address string. (init_breakpoint_sal): Likewise. Only save extra_string if it is non-NULL and not the empty string. Use event_location_to_string instead of `addr_string'. Constify `p' and `endp'. Use skip_spaces_const/skip_space_const instead of non-const versions. Copy the location into the breakpoint. If LOCATION is NULL, save the breakpoint address as a linespec location instead of an address string. (create_breakpoint_sal): Change `addr_string' parameter to a struct event_location. All uses updated. (create_breakpoints_sal): Likewise for local variable `addr_string'. (parse_breakpoint_sals): Use locations instead of address strings. Remove check for empty linespec with conditional. Refactor. (decode_static_tracepoint_spec): Make argument const and update function. (create_breakpoint): Change `arg' to a struct event_location and rename. Remove `copy_arg' and `addr_start'. If EXTRA_STRING is empty, set it to NULL. Don't populate `canonical' for pending breakpoints. Pass `extra_string' to find_condition_and_thread. Clear `extra_string' if `rest' was NULL. Do not error with "garbage after location" if setting a dprintf breakpoint. Copy the location into the breakpoint instead of an address string. (break_command_1): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Check against `arg_cp' for a probe linespec. (dprintf_command): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Throw an exception if no format string was specified. (print_recreate_ranged_breakpoint): Use event_location_to_string instead of address strings. (break_range_command, until_break_command) (init_ada_exception_breakpoint): Use locations instead of address strings. (say_where): Print out extra_string for pending locations. (base_breakpoint_dtor): Delete `location' and `location_range_end' of the breakpoint. (base_breakpoint_create_sals_from_location): Use struct event_location instead of address string. Remove `addr_start' and `copy_arg' parameters. (base_breakpoint_decode_location): Use struct event_location instead of address string. (bkpt_re_set): Use locations instead of address strings. Use event_location_empty_p to check for unset location. (bkpt_print_recreate): Use event_location_to_string instead of an address string. Print out extra_string for pending locations. (bkpt_create_sals_from_location, bkpt_decode_location) (bkpt_probe_create_sals_from_location): Use struct event_location instead of address string. (bkpt_probe_decode_location): Use struct event_location instead of address string. (tracepoint_print_recreate): Use event_location_to_string to recreate the tracepoint. (tracepoint_create_sals_from_location, tracepoint_decode_location) (tracepoint_probe_create_sals_from_location) (tracepoint_probe_decode_location): Use struct event_location instead of address string. (dprintf_print_recreate): Use event_location_to_string to recreate the dprintf. (dprintf_re_set): Remove check for valid/missing format string. (strace_marker_create_sals_from_location) (strace_marker_create_breakpoints_sal, strace_marker_decode_location) (update_static_tracepoint): Use struct event_location instead of address string. (location_to_sals): Likewise. Pass `extra_string' to find_condition_and_thread. For newly resolved pending breakpoint locations, clear the location's string representation. Assert that the breakpoint's condition string is NULL when condition_not_parsed. (breakpoint_re_set_default, create_sals_from_location_default) (decode_location_default, trace_command, ftrace_command) (strace_command, create_tracepoint_from_upload): Use locations instead of address strings. * breakpoint.h (struct breakpoint_ops) <create_sals_from_location>: Use struct event_location instead of address string. Update all uses. <decode_location>: Likewise. (struct breakpoint) <addr_string>: Change to struct event_location and rename `location'. <addr_string_range_end>: Change to struct event_location and rename `location_range_end'. (create_breakpoint): Use struct event_location instead of address string. * cli/cli-cmds.c: Include location.h. (edit_command, list_command): Use locations instead of address strings. * elfread.c: Include location.h. (elf_gnu_ifunc_resolver_return_stop): Use event_location_to_string. * guile/scm-breakpoint.c: Include location.h. (bpscm_print_breakpoint_smob): Use event_location_to_string. (gdbscm_register_breakpoint): Use locations instead of address strings. * linespec.c: Include location.h. (struct ls_parser) <stream>: Change to const char *. (PARSER_STREAM): Update. (lionespec_lexer_lex_keyword): According to find_condition_and_thread, keywords must be followed by whitespace. (canonicalize_linespec): Save a linespec location into `canonical'. Save a canonical linespec into `canonical'. (parse_linespec): Change `argptr' to const char * and rename `arg'. All uses updated. Update function description. (linespec_parser_new): Initialize `parser'. Update initialization of parsing stream. (event_location_to_sals): New function. (decode_line_full): Change `argptr' to a struct event_location and rename it `location'. Use locations instead of address strings. Call event_location_to_sals instead of parse_linespec. (decode_line_1): Likewise. (decode_line_with_current_source, decode_line_with_last_displayed) Use locations instead of address strings. (decode_objc): Likewise. Change `argptr' to const char * and rename `arg'. (destroy_linespec_result): Delete the linespec result's location instead of freeing the address string. * linespec.h (struct linespec_result) <addr_string>: Change to struct event_location and rename to ... <location>: ... this. (decode_line_1, decode_line_full): Change `argptr' to struct event_location. All callers updated. * mi/mi-cmd-break.c: Include language.h, location.h, and linespec.h. (mi_cmd_break_insert_1): Use locations instead of address strings. Throw an error if there was "garbage" at the end of the specified linespec. * probe.c: Include location.h. (parse_probes): Change `argptr' to struct event_location. Use event locations instead of address strings. * probe.h (parse_probes): Change `argptr' to struct event_location. * python/py-breakpoint.c: Include location.h. (bppy_get_location): Constify local variable `str'. Use event_location_to_string. (bppy_init): Use locations instead of address strings. * python/py-finishbreakpoint.c: Include location.h. (bpfinishpy_init): Remove local variable `addr_str'. Use locations instead of address strings. * python/python.c: Include location.h. (gdbpy_decode_line): Use locations instead of address strings. * remote.c: Include location.h. (remote_download_tracepoint): Use locations instead of address strings. * spu-tdep.c: Include location.h. (spu_catch_start): Remove local variable `buf'. Use locations instead of address strings. * tracepoint.c: Include location.h. (scope_info): Use locations instead of address strings. (encode_source_string): Constify parameter `src'. * tracepoint.h (encode_source_string): Likewise. gdb/testsuite/ChangeLog * gdb.base/dprintf-pending.exp: Update dprintf "without format" test. Add tests for missing ",FMT" and ",".
2015-08-12 02:09:35 +02:00
struct event_location *location;
Limit breakpoint re-set to the current program space Currently, we always re-set all locations of all breakpoints. This commit makes us re-set only locations of the current program space. If we loaded symbols to a program space (e.g., "file" command or some shared library was loaded), GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. However, there's no reason to recreate locations for _other_ program spaces, as those haven't changed. Similarly, when we create a new inferior, through e.g., a fork, GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. There's no reason to destroy the locations of the parent inferior and other inferiors. We know those won't change. In addition to being inneficient, resetting breakpoints of inferiors that are currently running is problematic, because: - some targets can't read memory while the inferior is running. - the inferior might exit while we're re-setting its breakpoints, which may confuse prologue skipping. I went through all the places where we call breakpoint_re_set, and it seems to me that all can be changed to only re-set locations of the current program space. The patch that reversed threads order in "info threads" etc. happened to make gdb.threads/fork-plus-thread.exp expose this problem when testing on x86/-m32. The problem was latent and masked out by chance by the code-cache: https://sourceware.org/ml/gdb-patches/2016-01/msg00213.html Tested on x86-64 F20, native (-m64/-m32) and extended-remote gdbserver. Fixes the regression discussed in the url above with --target_board=unix/-m32: -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left (timeout) -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left (the program exited) +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left gdb/ChangeLog: 2016-01-19 Pedro Alves <palves@redhat.com> * ax-gdb.c (agent_command_1): Adjust call to decode_line_full. * break-catch-throw.c (re_set_exception_catchpoint): Pass the current program space down to linespec decoding and breakpoint location updating. * breakpoint.c (parse_breakpoint_sals): Adjust calls to decode_line_full. (until_break_command): Adjust calls to decode_line_1. (base_breakpoint_decode_location, bkpt_decode_location): Add 'search_pspace' parameter. Pass it along. (bkpt_probe_create_sals_from_location): Adjust calls to parse_probes. (tracepoint_decode_location, tracepoint_probe_decode_location) (strace_marker_decode_location): Add 'search_pspace' parameter. Pass it along. (all_locations_are_pending): Rewrite to take a breakpoint and program space as arguments instead. (hoist_existing_locations): New function. (update_breakpoint_locations): Add 'filter_pspace' parameter. Use hoist_existing_locations instead of always removing all locations, and adjust to all_locations_are_pending change. (location_to_sals): Add 'search_pspace' parameter. Pass it along. Don't disable the breakpoint if there are other locations in another program space. (breakpoint_re_set_default): Adjust to pass down the current program space as filter program space. (decode_location_default): Add 'search_pspace' parameter and pass it along. (prepare_re_set_context): Don't switch program space here. (breakpoint_re_set): Use save_current_space_and_thread instead of save_current_program_space. * breakpoint.h (struct breakpoint_ops) <decode_location>: Add 'search_pspace' parameter. (update_breakpoint_locations): Add 'filter_pspace' parameter. * cli/cli-cmds.c (edit_command, list_command): Adjust calls to decode_line_1. * elfread.c (elf_gnu_ifunc_resolver_return_stop): Pass the current program space as filter program space. * linespec.c (struct linespec_state) <search_pspace>: New field. (create_sals_line_offset, convert_explicit_location_to_sals) (parse_linespec): Pass the search program space down. (linespec_state_constructor): Add 'search_pspace' parameter. Store it. (linespec_parser_new): Add 'search_pspace' parameter and pass it along. (linespec_lex_to_end): Adjust. (decode_line_full, decode_line_1): Add 'search_pspace' parameter and pass it along. (decode_line_with_last_displayed): Adjust. (collect_symtabs_from_filename, symtabs_from_filename): New 'search_pspace' parameter. Use it. (find_function_symbols): Pass the search program space down. * linespec.h (decode_line_1, decode_line_full): Add 'search_pspace' parameter. * probe.c (parse_probes_in_pspace): New function, factored out from ... (parse_probes): ... this. Add 'search_pspace' parameter and use it. * probe.h (parse_probes): Add pspace' parameter. * python/python.c (gdbpy_decode_line): Adjust. * tracepoint.c (scope_info): Adjust.
2016-01-19 13:18:14 +01:00
struct program_space *filter_pspace = current_program_space;
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
Fix probe-related internal error on AIX -- Initial message by Tom Tromey: While testing on AIX, I happened to notice an internal error coming from parse_probes. This happens because there are no probes defined on this platform. This patch fixes the problem by changing an assert into an ordinary error, and then changing the relevant caller to cope. This fixes a few tests on AIX; also regtested on x86-64 Fedora 18. -- Followup by Sergio Durigan Junior: By reading the patch (and the original code), I found it a little bit obscure, so I took the liberty to try to improve it. Here's the patch. Could you please take a look and see if it works on AIX (and also if you like the approach)? gdb/ 2014-03-20 Tom Tromey <tromey@redhat.com> Sergio Durigan Junior <sergiodj@redhat.com> * probe.c (parse_probes): Turn assert into an ordinary error. * break-catch-throw.c (re_set_exception_catchpoint): Ignore exceptions when parsing probes. Rearrange the code for clarity.
2014-03-20 22:08:31 +01:00
/* We first try to use the probe interface. */
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
TRY
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
{
Explicit locations: introduce probe locations This patch adds support for probe locations and converts existing probe linespec locations to the new location type. gdb/ChangeLog: * break-catch-throw.c (re_set_exception_catchpoint): Convert linespec for stap probe to probe location. * breakpoint.c (create_longjmp_master_breakpoint) (create_exception_master_breakpoint): Likewise. (break_command_1): Remove local variable `arg_cp'. Check location type to set appropriate breakpoint ops methods. (trace_command): Likewise. * linespec.c (event_location_to_sals): Assert on probe locations. * location.c (EL_PROBE): Add macro definition. (new_probe_location, get_probe_location): New functions. (copy_event_location, delete_event_location, event_location_to_string) (string_to_event_location, event_location_empty_p): Handle probe locations. * location.h (enum event_location_type): Add PROBE_LOCATION. (new_probe_location, get_probe_location): Declare. * probe.c (parse_probes): Assert that LOCATION is a probe location. Convert linespec into probe location.
2015-08-12 02:09:35 +02:00
location
= new_probe_location (exception_functions[kind].probe);
Explicit locations: use new location API This patch converts the code base to use the new struct event_location API being introduced. This patch preserves the current functionality and adds no new features. The "big picture" API usage introduced by this patch may be illustrated with a simple exmaple. Where previously developers would write: void my_command (char *arg, int from_tty) { create_breakpoint (..., arg, ...); ... } one now uses: void my_command (char *arg, int from_tty) { struct event_locaiton *location; struct cleanup *back_to; location = string_to_event_locaiton (&arg, ...); back_to = make_cleanup_delete_event_location (location); create_breakpoint (..., location, ...); do_cleanups (back_to); } Linespec-decoding functions (now called location-decoding) such as decode_line_full no longer skip argument pointers over processed input. That functionality has been moved into string_to_event_location as demonstrated above. gdb/ChangeLog * ax-gdb.c: Include location.h. (agent_command_1) Use linespec location instead of address string. * break-catch-throw.c: Include location.h. (re_set_exception_catchpoint): Use linespec locations instead of address strings. * breakpoint.c: Include location.h. (create_overlay_event_breakpoint, create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_breakpoints_after_exec): Use linespec location instead of address string. (print_breakpoint_location): Use locations and event_location_to_string. Print extra_string for pending locations for non-MI streams. (print_one_breakpoint_location): Use locations and event_location_to_string. (init_raw_breakpoint_without_location): Initialize b->location. (create_thread_event_breakpoint): Use linespec location instead of address string. (init_breakpoint_sal): Likewise. Only save extra_string if it is non-NULL and not the empty string. Use event_location_to_string instead of `addr_string'. Constify `p' and `endp'. Use skip_spaces_const/skip_space_const instead of non-const versions. Copy the location into the breakpoint. If LOCATION is NULL, save the breakpoint address as a linespec location instead of an address string. (create_breakpoint_sal): Change `addr_string' parameter to a struct event_location. All uses updated. (create_breakpoints_sal): Likewise for local variable `addr_string'. (parse_breakpoint_sals): Use locations instead of address strings. Remove check for empty linespec with conditional. Refactor. (decode_static_tracepoint_spec): Make argument const and update function. (create_breakpoint): Change `arg' to a struct event_location and rename. Remove `copy_arg' and `addr_start'. If EXTRA_STRING is empty, set it to NULL. Don't populate `canonical' for pending breakpoints. Pass `extra_string' to find_condition_and_thread. Clear `extra_string' if `rest' was NULL. Do not error with "garbage after location" if setting a dprintf breakpoint. Copy the location into the breakpoint instead of an address string. (break_command_1): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Check against `arg_cp' for a probe linespec. (dprintf_command): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Throw an exception if no format string was specified. (print_recreate_ranged_breakpoint): Use event_location_to_string instead of address strings. (break_range_command, until_break_command) (init_ada_exception_breakpoint): Use locations instead of address strings. (say_where): Print out extra_string for pending locations. (base_breakpoint_dtor): Delete `location' and `location_range_end' of the breakpoint. (base_breakpoint_create_sals_from_location): Use struct event_location instead of address string. Remove `addr_start' and `copy_arg' parameters. (base_breakpoint_decode_location): Use struct event_location instead of address string. (bkpt_re_set): Use locations instead of address strings. Use event_location_empty_p to check for unset location. (bkpt_print_recreate): Use event_location_to_string instead of an address string. Print out extra_string for pending locations. (bkpt_create_sals_from_location, bkpt_decode_location) (bkpt_probe_create_sals_from_location): Use struct event_location instead of address string. (bkpt_probe_decode_location): Use struct event_location instead of address string. (tracepoint_print_recreate): Use event_location_to_string to recreate the tracepoint. (tracepoint_create_sals_from_location, tracepoint_decode_location) (tracepoint_probe_create_sals_from_location) (tracepoint_probe_decode_location): Use struct event_location instead of address string. (dprintf_print_recreate): Use event_location_to_string to recreate the dprintf. (dprintf_re_set): Remove check for valid/missing format string. (strace_marker_create_sals_from_location) (strace_marker_create_breakpoints_sal, strace_marker_decode_location) (update_static_tracepoint): Use struct event_location instead of address string. (location_to_sals): Likewise. Pass `extra_string' to find_condition_and_thread. For newly resolved pending breakpoint locations, clear the location's string representation. Assert that the breakpoint's condition string is NULL when condition_not_parsed. (breakpoint_re_set_default, create_sals_from_location_default) (decode_location_default, trace_command, ftrace_command) (strace_command, create_tracepoint_from_upload): Use locations instead of address strings. * breakpoint.h (struct breakpoint_ops) <create_sals_from_location>: Use struct event_location instead of address string. Update all uses. <decode_location>: Likewise. (struct breakpoint) <addr_string>: Change to struct event_location and rename `location'. <addr_string_range_end>: Change to struct event_location and rename `location_range_end'. (create_breakpoint): Use struct event_location instead of address string. * cli/cli-cmds.c: Include location.h. (edit_command, list_command): Use locations instead of address strings. * elfread.c: Include location.h. (elf_gnu_ifunc_resolver_return_stop): Use event_location_to_string. * guile/scm-breakpoint.c: Include location.h. (bpscm_print_breakpoint_smob): Use event_location_to_string. (gdbscm_register_breakpoint): Use locations instead of address strings. * linespec.c: Include location.h. (struct ls_parser) <stream>: Change to const char *. (PARSER_STREAM): Update. (lionespec_lexer_lex_keyword): According to find_condition_and_thread, keywords must be followed by whitespace. (canonicalize_linespec): Save a linespec location into `canonical'. Save a canonical linespec into `canonical'. (parse_linespec): Change `argptr' to const char * and rename `arg'. All uses updated. Update function description. (linespec_parser_new): Initialize `parser'. Update initialization of parsing stream. (event_location_to_sals): New function. (decode_line_full): Change `argptr' to a struct event_location and rename it `location'. Use locations instead of address strings. Call event_location_to_sals instead of parse_linespec. (decode_line_1): Likewise. (decode_line_with_current_source, decode_line_with_last_displayed) Use locations instead of address strings. (decode_objc): Likewise. Change `argptr' to const char * and rename `arg'. (destroy_linespec_result): Delete the linespec result's location instead of freeing the address string. * linespec.h (struct linespec_result) <addr_string>: Change to struct event_location and rename to ... <location>: ... this. (decode_line_1, decode_line_full): Change `argptr' to struct event_location. All callers updated. * mi/mi-cmd-break.c: Include language.h, location.h, and linespec.h. (mi_cmd_break_insert_1): Use locations instead of address strings. Throw an error if there was "garbage" at the end of the specified linespec. * probe.c: Include location.h. (parse_probes): Change `argptr' to struct event_location. Use event locations instead of address strings. * probe.h (parse_probes): Change `argptr' to struct event_location. * python/py-breakpoint.c: Include location.h. (bppy_get_location): Constify local variable `str'. Use event_location_to_string. (bppy_init): Use locations instead of address strings. * python/py-finishbreakpoint.c: Include location.h. (bpfinishpy_init): Remove local variable `addr_str'. Use locations instead of address strings. * python/python.c: Include location.h. (gdbpy_decode_line): Use locations instead of address strings. * remote.c: Include location.h. (remote_download_tracepoint): Use locations instead of address strings. * spu-tdep.c: Include location.h. (spu_catch_start): Remove local variable `buf'. Use locations instead of address strings. * tracepoint.c: Include location.h. (scope_info): Use locations instead of address strings. (encode_source_string): Constify parameter `src'. * tracepoint.h (encode_source_string): Likewise. gdb/testsuite/ChangeLog * gdb.base/dprintf-pending.exp: Update dprintf "without format" test. Add tests for missing ",FMT" and ",".
2015-08-12 02:09:35 +02:00
cleanup = make_cleanup_delete_event_location (location);
Limit breakpoint re-set to the current program space Currently, we always re-set all locations of all breakpoints. This commit makes us re-set only locations of the current program space. If we loaded symbols to a program space (e.g., "file" command or some shared library was loaded), GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. However, there's no reason to recreate locations for _other_ program spaces, as those haven't changed. Similarly, when we create a new inferior, through e.g., a fork, GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. There's no reason to destroy the locations of the parent inferior and other inferiors. We know those won't change. In addition to being inneficient, resetting breakpoints of inferiors that are currently running is problematic, because: - some targets can't read memory while the inferior is running. - the inferior might exit while we're re-setting its breakpoints, which may confuse prologue skipping. I went through all the places where we call breakpoint_re_set, and it seems to me that all can be changed to only re-set locations of the current program space. The patch that reversed threads order in "info threads" etc. happened to make gdb.threads/fork-plus-thread.exp expose this problem when testing on x86/-m32. The problem was latent and masked out by chance by the code-cache: https://sourceware.org/ml/gdb-patches/2016-01/msg00213.html Tested on x86-64 F20, native (-m64/-m32) and extended-remote gdbserver. Fixes the regression discussed in the url above with --target_board=unix/-m32: -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left (timeout) -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left (the program exited) +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left gdb/ChangeLog: 2016-01-19 Pedro Alves <palves@redhat.com> * ax-gdb.c (agent_command_1): Adjust call to decode_line_full. * break-catch-throw.c (re_set_exception_catchpoint): Pass the current program space down to linespec decoding and breakpoint location updating. * breakpoint.c (parse_breakpoint_sals): Adjust calls to decode_line_full. (until_break_command): Adjust calls to decode_line_1. (base_breakpoint_decode_location, bkpt_decode_location): Add 'search_pspace' parameter. Pass it along. (bkpt_probe_create_sals_from_location): Adjust calls to parse_probes. (tracepoint_decode_location, tracepoint_probe_decode_location) (strace_marker_decode_location): Add 'search_pspace' parameter. Pass it along. (all_locations_are_pending): Rewrite to take a breakpoint and program space as arguments instead. (hoist_existing_locations): New function. (update_breakpoint_locations): Add 'filter_pspace' parameter. Use hoist_existing_locations instead of always removing all locations, and adjust to all_locations_are_pending change. (location_to_sals): Add 'search_pspace' parameter. Pass it along. Don't disable the breakpoint if there are other locations in another program space. (breakpoint_re_set_default): Adjust to pass down the current program space as filter program space. (decode_location_default): Add 'search_pspace' parameter and pass it along. (prepare_re_set_context): Don't switch program space here. (breakpoint_re_set): Use save_current_space_and_thread instead of save_current_program_space. * breakpoint.h (struct breakpoint_ops) <decode_location>: Add 'search_pspace' parameter. (update_breakpoint_locations): Add 'filter_pspace' parameter. * cli/cli-cmds.c (edit_command, list_command): Adjust calls to decode_line_1. * elfread.c (elf_gnu_ifunc_resolver_return_stop): Pass the current program space as filter program space. * linespec.c (struct linespec_state) <search_pspace>: New field. (create_sals_line_offset, convert_explicit_location_to_sals) (parse_linespec): Pass the search program space down. (linespec_state_constructor): Add 'search_pspace' parameter. Store it. (linespec_parser_new): Add 'search_pspace' parameter and pass it along. (linespec_lex_to_end): Adjust. (decode_line_full, decode_line_1): Add 'search_pspace' parameter and pass it along. (decode_line_with_last_displayed): Adjust. (collect_symtabs_from_filename, symtabs_from_filename): New 'search_pspace' parameter. Use it. (find_function_symbols): Pass the search program space down. * linespec.h (decode_line_1, decode_line_full): Add 'search_pspace' parameter. * probe.c (parse_probes_in_pspace): New function, factored out from ... (parse_probes): ... this. Add 'search_pspace' parameter and use it. * probe.h (parse_probes): Add pspace' parameter. * python/python.c (gdbpy_decode_line): Adjust. * tracepoint.c (scope_info): Adjust.
2016-01-19 13:18:14 +01:00
sals = parse_probes (location, filter_pspace, NULL);
Explicit locations: use new location API This patch converts the code base to use the new struct event_location API being introduced. This patch preserves the current functionality and adds no new features. The "big picture" API usage introduced by this patch may be illustrated with a simple exmaple. Where previously developers would write: void my_command (char *arg, int from_tty) { create_breakpoint (..., arg, ...); ... } one now uses: void my_command (char *arg, int from_tty) { struct event_locaiton *location; struct cleanup *back_to; location = string_to_event_locaiton (&arg, ...); back_to = make_cleanup_delete_event_location (location); create_breakpoint (..., location, ...); do_cleanups (back_to); } Linespec-decoding functions (now called location-decoding) such as decode_line_full no longer skip argument pointers over processed input. That functionality has been moved into string_to_event_location as demonstrated above. gdb/ChangeLog * ax-gdb.c: Include location.h. (agent_command_1) Use linespec location instead of address string. * break-catch-throw.c: Include location.h. (re_set_exception_catchpoint): Use linespec locations instead of address strings. * breakpoint.c: Include location.h. (create_overlay_event_breakpoint, create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_breakpoints_after_exec): Use linespec location instead of address string. (print_breakpoint_location): Use locations and event_location_to_string. Print extra_string for pending locations for non-MI streams. (print_one_breakpoint_location): Use locations and event_location_to_string. (init_raw_breakpoint_without_location): Initialize b->location. (create_thread_event_breakpoint): Use linespec location instead of address string. (init_breakpoint_sal): Likewise. Only save extra_string if it is non-NULL and not the empty string. Use event_location_to_string instead of `addr_string'. Constify `p' and `endp'. Use skip_spaces_const/skip_space_const instead of non-const versions. Copy the location into the breakpoint. If LOCATION is NULL, save the breakpoint address as a linespec location instead of an address string. (create_breakpoint_sal): Change `addr_string' parameter to a struct event_location. All uses updated. (create_breakpoints_sal): Likewise for local variable `addr_string'. (parse_breakpoint_sals): Use locations instead of address strings. Remove check for empty linespec with conditional. Refactor. (decode_static_tracepoint_spec): Make argument const and update function. (create_breakpoint): Change `arg' to a struct event_location and rename. Remove `copy_arg' and `addr_start'. If EXTRA_STRING is empty, set it to NULL. Don't populate `canonical' for pending breakpoints. Pass `extra_string' to find_condition_and_thread. Clear `extra_string' if `rest' was NULL. Do not error with "garbage after location" if setting a dprintf breakpoint. Copy the location into the breakpoint instead of an address string. (break_command_1): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Check against `arg_cp' for a probe linespec. (dprintf_command): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Throw an exception if no format string was specified. (print_recreate_ranged_breakpoint): Use event_location_to_string instead of address strings. (break_range_command, until_break_command) (init_ada_exception_breakpoint): Use locations instead of address strings. (say_where): Print out extra_string for pending locations. (base_breakpoint_dtor): Delete `location' and `location_range_end' of the breakpoint. (base_breakpoint_create_sals_from_location): Use struct event_location instead of address string. Remove `addr_start' and `copy_arg' parameters. (base_breakpoint_decode_location): Use struct event_location instead of address string. (bkpt_re_set): Use locations instead of address strings. Use event_location_empty_p to check for unset location. (bkpt_print_recreate): Use event_location_to_string instead of an address string. Print out extra_string for pending locations. (bkpt_create_sals_from_location, bkpt_decode_location) (bkpt_probe_create_sals_from_location): Use struct event_location instead of address string. (bkpt_probe_decode_location): Use struct event_location instead of address string. (tracepoint_print_recreate): Use event_location_to_string to recreate the tracepoint. (tracepoint_create_sals_from_location, tracepoint_decode_location) (tracepoint_probe_create_sals_from_location) (tracepoint_probe_decode_location): Use struct event_location instead of address string. (dprintf_print_recreate): Use event_location_to_string to recreate the dprintf. (dprintf_re_set): Remove check for valid/missing format string. (strace_marker_create_sals_from_location) (strace_marker_create_breakpoints_sal, strace_marker_decode_location) (update_static_tracepoint): Use struct event_location instead of address string. (location_to_sals): Likewise. Pass `extra_string' to find_condition_and_thread. For newly resolved pending breakpoint locations, clear the location's string representation. Assert that the breakpoint's condition string is NULL when condition_not_parsed. (breakpoint_re_set_default, create_sals_from_location_default) (decode_location_default, trace_command, ftrace_command) (strace_command, create_tracepoint_from_upload): Use locations instead of address strings. * breakpoint.h (struct breakpoint_ops) <create_sals_from_location>: Use struct event_location instead of address string. Update all uses. <decode_location>: Likewise. (struct breakpoint) <addr_string>: Change to struct event_location and rename `location'. <addr_string_range_end>: Change to struct event_location and rename `location_range_end'. (create_breakpoint): Use struct event_location instead of address string. * cli/cli-cmds.c: Include location.h. (edit_command, list_command): Use locations instead of address strings. * elfread.c: Include location.h. (elf_gnu_ifunc_resolver_return_stop): Use event_location_to_string. * guile/scm-breakpoint.c: Include location.h. (bpscm_print_breakpoint_smob): Use event_location_to_string. (gdbscm_register_breakpoint): Use locations instead of address strings. * linespec.c: Include location.h. (struct ls_parser) <stream>: Change to const char *. (PARSER_STREAM): Update. (lionespec_lexer_lex_keyword): According to find_condition_and_thread, keywords must be followed by whitespace. (canonicalize_linespec): Save a linespec location into `canonical'. Save a canonical linespec into `canonical'. (parse_linespec): Change `argptr' to const char * and rename `arg'. All uses updated. Update function description. (linespec_parser_new): Initialize `parser'. Update initialization of parsing stream. (event_location_to_sals): New function. (decode_line_full): Change `argptr' to a struct event_location and rename it `location'. Use locations instead of address strings. Call event_location_to_sals instead of parse_linespec. (decode_line_1): Likewise. (decode_line_with_current_source, decode_line_with_last_displayed) Use locations instead of address strings. (decode_objc): Likewise. Change `argptr' to const char * and rename `arg'. (destroy_linespec_result): Delete the linespec result's location instead of freeing the address string. * linespec.h (struct linespec_result) <addr_string>: Change to struct event_location and rename to ... <location>: ... this. (decode_line_1, decode_line_full): Change `argptr' to struct event_location. All callers updated. * mi/mi-cmd-break.c: Include language.h, location.h, and linespec.h. (mi_cmd_break_insert_1): Use locations instead of address strings. Throw an error if there was "garbage" at the end of the specified linespec. * probe.c: Include location.h. (parse_probes): Change `argptr' to struct event_location. Use event locations instead of address strings. * probe.h (parse_probes): Change `argptr' to struct event_location. * python/py-breakpoint.c: Include location.h. (bppy_get_location): Constify local variable `str'. Use event_location_to_string. (bppy_init): Use locations instead of address strings. * python/py-finishbreakpoint.c: Include location.h. (bpfinishpy_init): Remove local variable `addr_str'. Use locations instead of address strings. * python/python.c: Include location.h. (gdbpy_decode_line): Use locations instead of address strings. * remote.c: Include location.h. (remote_download_tracepoint): Use locations instead of address strings. * spu-tdep.c: Include location.h. (spu_catch_start): Remove local variable `buf'. Use locations instead of address strings. * tracepoint.c: Include location.h. (scope_info): Use locations instead of address strings. (encode_source_string): Constify parameter `src'. * tracepoint.h (encode_source_string): Likewise. gdb/testsuite/ChangeLog * gdb.base/dprintf-pending.exp: Update dprintf "without format" test. Add tests for missing ",FMT" and ",".
2015-08-12 02:09:35 +02:00
do_cleanups (cleanup);
Fix probe-related internal error on AIX -- Initial message by Tom Tromey: While testing on AIX, I happened to notice an internal error coming from parse_probes. This happens because there are no probes defined on this platform. This patch fixes the problem by changing an assert into an ordinary error, and then changing the relevant caller to cope. This fixes a few tests on AIX; also regtested on x86-64 Fedora 18. -- Followup by Sergio Durigan Junior: By reading the patch (and the original code), I found it a little bit obscure, so I took the liberty to try to improve it. Here's the patch. Could you please take a look and see if it works on AIX (and also if you like the approach)? gdb/ 2014-03-20 Tom Tromey <tromey@redhat.com> Sergio Durigan Junior <sergiodj@redhat.com> * probe.c (parse_probes): Turn assert into an ordinary error. * break-catch-throw.c (re_set_exception_catchpoint): Ignore exceptions when parsing probes. Rearrange the code for clarity.
2014-03-20 22:08:31 +01:00
}
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
CATCH (e, RETURN_MASK_ERROR)
Fix probe-related internal error on AIX -- Initial message by Tom Tromey: While testing on AIX, I happened to notice an internal error coming from parse_probes. This happens because there are no probes defined on this platform. This patch fixes the problem by changing an assert into an ordinary error, and then changing the relevant caller to cope. This fixes a few tests on AIX; also regtested on x86-64 Fedora 18. -- Followup by Sergio Durigan Junior: By reading the patch (and the original code), I found it a little bit obscure, so I took the liberty to try to improve it. Here's the patch. Could you please take a look and see if it works on AIX (and also if you like the approach)? gdb/ 2014-03-20 Tom Tromey <tromey@redhat.com> Sergio Durigan Junior <sergiodj@redhat.com> * probe.c (parse_probes): Turn assert into an ordinary error. * break-catch-throw.c (re_set_exception_catchpoint): Ignore exceptions when parsing probes. Rearrange the code for clarity.
2014-03-20 22:08:31 +01:00
{
/* Using the probe interface failed. Let's fallback to the normal
catchpoint mode. */
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
TRY
* break-catch-throw.c (struct exception_names): New. (exception_functions): Change type. (re_set_exception_catchpoint): Look for SDT probes.
2013-04-15 20:06:42 +02:00
{
Mass rename `explicit' -> `explicit_loc'. BuildBot reminded me that "explicit" is a reserved keyword in C++. This patch simply renames all the (illegal) uses of "explicit". This should fix the build errors with --enable-build-with-cxx bots. gdb/ChangeLog * break-catch-throw.c (re_set_exception_catchpoint) Rename reserved C++ keyword "explicit" to "explicit_loc". * breakpoint.c (create_overlay_event_breakpoint) (create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_static_tracepoint): Rename reserved C++ keyword "explicit" to "explicit_loc". * completer.c (collect_explicit_location_matches) (explicit_location_completer): Rename reserved C++ keyword "explicit" to "explicit_loc". * linespec.c (struct linespec) <explicit>: Rename to "explicit_loc". (canonicalize_linespec, create_sals_line_offset) (convert_linespec_to_sals, convert_explicit_location_to_sals) (event_location_to_sals, decode_objc): Rename reserved C++ keyword "explicit" to "explicit_loc". * location.c (struct event_location) <explicit>: Rename to "explicit_loc". (initialize_explicit_location, new_explicit_location) (explicit_location_to_string_internal, explicit_location_to_linespec): Rename reserved C++ keyword "explicit" to "explicit_loc". * location.h (explicit_location_to_string) (explicit_location_to_linespec, initialize_explicit_location) (new_explicit_location): Rename reserved C++ keyword "explicit" to "explicit_loc". * mi/mi-cmd-break.c (mi_cmd_break_insert_1): Rename reserved C++ keyword "explicit" to "explicit_loc".
2015-08-13 18:48:12 +02:00
struct explicit_location explicit_loc;
Fix probe-related internal error on AIX -- Initial message by Tom Tromey: While testing on AIX, I happened to notice an internal error coming from parse_probes. This happens because there are no probes defined on this platform. This patch fixes the problem by changing an assert into an ordinary error, and then changing the relevant caller to cope. This fixes a few tests on AIX; also regtested on x86-64 Fedora 18. -- Followup by Sergio Durigan Junior: By reading the patch (and the original code), I found it a little bit obscure, so I took the liberty to try to improve it. Here's the patch. Could you please take a look and see if it works on AIX (and also if you like the approach)? gdb/ 2014-03-20 Tom Tromey <tromey@redhat.com> Sergio Durigan Junior <sergiodj@redhat.com> * probe.c (parse_probes): Turn assert into an ordinary error. * break-catch-throw.c (re_set_exception_catchpoint): Ignore exceptions when parsing probes. Rearrange the code for clarity.
2014-03-20 22:08:31 +01:00
Mass rename `explicit' -> `explicit_loc'. BuildBot reminded me that "explicit" is a reserved keyword in C++. This patch simply renames all the (illegal) uses of "explicit". This should fix the build errors with --enable-build-with-cxx bots. gdb/ChangeLog * break-catch-throw.c (re_set_exception_catchpoint) Rename reserved C++ keyword "explicit" to "explicit_loc". * breakpoint.c (create_overlay_event_breakpoint) (create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_static_tracepoint): Rename reserved C++ keyword "explicit" to "explicit_loc". * completer.c (collect_explicit_location_matches) (explicit_location_completer): Rename reserved C++ keyword "explicit" to "explicit_loc". * linespec.c (struct linespec) <explicit>: Rename to "explicit_loc". (canonicalize_linespec, create_sals_line_offset) (convert_linespec_to_sals, convert_explicit_location_to_sals) (event_location_to_sals, decode_objc): Rename reserved C++ keyword "explicit" to "explicit_loc". * location.c (struct event_location) <explicit>: Rename to "explicit_loc". (initialize_explicit_location, new_explicit_location) (explicit_location_to_string_internal, explicit_location_to_linespec): Rename reserved C++ keyword "explicit" to "explicit_loc". * location.h (explicit_location_to_string) (explicit_location_to_linespec, initialize_explicit_location) (new_explicit_location): Rename reserved C++ keyword "explicit" to "explicit_loc". * mi/mi-cmd-break.c (mi_cmd_break_insert_1): Rename reserved C++ keyword "explicit" to "explicit_loc".
2015-08-13 18:48:12 +02:00
initialize_explicit_location (&explicit_loc);
explicit_loc.function_name
Explicit locations: introduce explicit locations This patch add support for explicit locations and switches many linespec locations to this new location type. This patch also converts all linespec locations entered by the user to an explicit representation internally (thus bypassing the linespec parser when resetting the breakpoint). This patch does not introduce any user-visible changes. gdb/ChangeLog: * break-catch-throw.c (re_set_exception_catchpoint): Convert linespec into explicit location. * breakpoint.c (create_overlay_breakpoint) (create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint): Convert linespec into explicit location. (update_static_tracepoint): Convert linespec into explicit location. * linespec.c (enum offset_relative_sign, struct line_offset): Move location.h. (struct linespec) <expression, expr_pc, source_filename> <function_name, label_name, line_offset>: Replace with ... <explicit>: ... this. <is_linespec>: New member. (PARSER_EXPLICIT): New accessor macro. (undefined_label_error): New function. (source_file_not_found_error): New function. (linespec_parse_basic): The parser result is now an explicit location. Use PARSER_EXPLICIT to access it. Use undefined_label_error. (canonicalize_linespec): Convert canonical linespec into explicit location. Move string representation of location to explicit_location_to_linespec and use it and explicit_location_to_string to save string representations of the canonical location. (create_sals_line_offset, convert_linespec_to_sals): `ls' contains an explicit location. Update all references. (convert_explicit_location_to_sals): New function. (parse_linespec): Use PARSER_EXPLICIT to access the parser result's explicit location. (linespec_state_constructor): Initialize is_linespec. Use PARSER_EXPLICIT. (linespec_parser_delete): Use PARSER_EXPLICIT to access the parser's result. (event_location_to_sals): For linespec locations, set is_linespec. Handle explicit locations. (decode_objc): 'ls' contains an explicit location now. Update all references. (symtabs_from_filename): Use source_file_not_found_error. * location.c (struct event_location.u) <explicit>: New member. (initialize_explicit_location): New function. (initialize_event_location): Initialize explicit locations. (new_explicit_location, get_explicit_location) (get_explicit_location_const): New functions. (explicit_to_string_internal): New function; most of contents moved from canonicalize_linespec. (explicit_location_to_string): New function. (explicit_location_to_linespec): New function. (copy_event_location, delete_event_location) (event_location_to_string_const, event_location_empty_p): Handle explicit locations. * location.h (enum offset_relative_sign, struct line_offset): Move here from linespec.h. (enum event_location_type): Add EXPLICIT_LOCATION. (struct explicit_location): New structure. (explicit_location_to_string): Declare. (explicit_location_to_linespec): Declare. (new_explicit_location, get_explicit_locationp (get_explicit_location_const, initialize_explicit_location): Declare.
2015-08-12 02:09:35 +02:00
= ASTRDUP (exception_functions[kind].function);
Mass rename `explicit' -> `explicit_loc'. BuildBot reminded me that "explicit" is a reserved keyword in C++. This patch simply renames all the (illegal) uses of "explicit". This should fix the build errors with --enable-build-with-cxx bots. gdb/ChangeLog * break-catch-throw.c (re_set_exception_catchpoint) Rename reserved C++ keyword "explicit" to "explicit_loc". * breakpoint.c (create_overlay_event_breakpoint) (create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_static_tracepoint): Rename reserved C++ keyword "explicit" to "explicit_loc". * completer.c (collect_explicit_location_matches) (explicit_location_completer): Rename reserved C++ keyword "explicit" to "explicit_loc". * linespec.c (struct linespec) <explicit>: Rename to "explicit_loc". (canonicalize_linespec, create_sals_line_offset) (convert_linespec_to_sals, convert_explicit_location_to_sals) (event_location_to_sals, decode_objc): Rename reserved C++ keyword "explicit" to "explicit_loc". * location.c (struct event_location) <explicit>: Rename to "explicit_loc". (initialize_explicit_location, new_explicit_location) (explicit_location_to_string_internal, explicit_location_to_linespec): Rename reserved C++ keyword "explicit" to "explicit_loc". * location.h (explicit_location_to_string) (explicit_location_to_linespec, initialize_explicit_location) (new_explicit_location): Rename reserved C++ keyword "explicit" to "explicit_loc". * mi/mi-cmd-break.c (mi_cmd_break_insert_1): Rename reserved C++ keyword "explicit" to "explicit_loc".
2015-08-13 18:48:12 +02:00
location = new_explicit_location (&explicit_loc);
Explicit locations: use new location API This patch converts the code base to use the new struct event_location API being introduced. This patch preserves the current functionality and adds no new features. The "big picture" API usage introduced by this patch may be illustrated with a simple exmaple. Where previously developers would write: void my_command (char *arg, int from_tty) { create_breakpoint (..., arg, ...); ... } one now uses: void my_command (char *arg, int from_tty) { struct event_locaiton *location; struct cleanup *back_to; location = string_to_event_locaiton (&arg, ...); back_to = make_cleanup_delete_event_location (location); create_breakpoint (..., location, ...); do_cleanups (back_to); } Linespec-decoding functions (now called location-decoding) such as decode_line_full no longer skip argument pointers over processed input. That functionality has been moved into string_to_event_location as demonstrated above. gdb/ChangeLog * ax-gdb.c: Include location.h. (agent_command_1) Use linespec location instead of address string. * break-catch-throw.c: Include location.h. (re_set_exception_catchpoint): Use linespec locations instead of address strings. * breakpoint.c: Include location.h. (create_overlay_event_breakpoint, create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_breakpoints_after_exec): Use linespec location instead of address string. (print_breakpoint_location): Use locations and event_location_to_string. Print extra_string for pending locations for non-MI streams. (print_one_breakpoint_location): Use locations and event_location_to_string. (init_raw_breakpoint_without_location): Initialize b->location. (create_thread_event_breakpoint): Use linespec location instead of address string. (init_breakpoint_sal): Likewise. Only save extra_string if it is non-NULL and not the empty string. Use event_location_to_string instead of `addr_string'. Constify `p' and `endp'. Use skip_spaces_const/skip_space_const instead of non-const versions. Copy the location into the breakpoint. If LOCATION is NULL, save the breakpoint address as a linespec location instead of an address string. (create_breakpoint_sal): Change `addr_string' parameter to a struct event_location. All uses updated. (create_breakpoints_sal): Likewise for local variable `addr_string'. (parse_breakpoint_sals): Use locations instead of address strings. Remove check for empty linespec with conditional. Refactor. (decode_static_tracepoint_spec): Make argument const and update function. (create_breakpoint): Change `arg' to a struct event_location and rename. Remove `copy_arg' and `addr_start'. If EXTRA_STRING is empty, set it to NULL. Don't populate `canonical' for pending breakpoints. Pass `extra_string' to find_condition_and_thread. Clear `extra_string' if `rest' was NULL. Do not error with "garbage after location" if setting a dprintf breakpoint. Copy the location into the breakpoint instead of an address string. (break_command_1): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Check against `arg_cp' for a probe linespec. (dprintf_command): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Throw an exception if no format string was specified. (print_recreate_ranged_breakpoint): Use event_location_to_string instead of address strings. (break_range_command, until_break_command) (init_ada_exception_breakpoint): Use locations instead of address strings. (say_where): Print out extra_string for pending locations. (base_breakpoint_dtor): Delete `location' and `location_range_end' of the breakpoint. (base_breakpoint_create_sals_from_location): Use struct event_location instead of address string. Remove `addr_start' and `copy_arg' parameters. (base_breakpoint_decode_location): Use struct event_location instead of address string. (bkpt_re_set): Use locations instead of address strings. Use event_location_empty_p to check for unset location. (bkpt_print_recreate): Use event_location_to_string instead of an address string. Print out extra_string for pending locations. (bkpt_create_sals_from_location, bkpt_decode_location) (bkpt_probe_create_sals_from_location): Use struct event_location instead of address string. (bkpt_probe_decode_location): Use struct event_location instead of address string. (tracepoint_print_recreate): Use event_location_to_string to recreate the tracepoint. (tracepoint_create_sals_from_location, tracepoint_decode_location) (tracepoint_probe_create_sals_from_location) (tracepoint_probe_decode_location): Use struct event_location instead of address string. (dprintf_print_recreate): Use event_location_to_string to recreate the dprintf. (dprintf_re_set): Remove check for valid/missing format string. (strace_marker_create_sals_from_location) (strace_marker_create_breakpoints_sal, strace_marker_decode_location) (update_static_tracepoint): Use struct event_location instead of address string. (location_to_sals): Likewise. Pass `extra_string' to find_condition_and_thread. For newly resolved pending breakpoint locations, clear the location's string representation. Assert that the breakpoint's condition string is NULL when condition_not_parsed. (breakpoint_re_set_default, create_sals_from_location_default) (decode_location_default, trace_command, ftrace_command) (strace_command, create_tracepoint_from_upload): Use locations instead of address strings. * breakpoint.h (struct breakpoint_ops) <create_sals_from_location>: Use struct event_location instead of address string. Update all uses. <decode_location>: Likewise. (struct breakpoint) <addr_string>: Change to struct event_location and rename `location'. <addr_string_range_end>: Change to struct event_location and rename `location_range_end'. (create_breakpoint): Use struct event_location instead of address string. * cli/cli-cmds.c: Include location.h. (edit_command, list_command): Use locations instead of address strings. * elfread.c: Include location.h. (elf_gnu_ifunc_resolver_return_stop): Use event_location_to_string. * guile/scm-breakpoint.c: Include location.h. (bpscm_print_breakpoint_smob): Use event_location_to_string. (gdbscm_register_breakpoint): Use locations instead of address strings. * linespec.c: Include location.h. (struct ls_parser) <stream>: Change to const char *. (PARSER_STREAM): Update. (lionespec_lexer_lex_keyword): According to find_condition_and_thread, keywords must be followed by whitespace. (canonicalize_linespec): Save a linespec location into `canonical'. Save a canonical linespec into `canonical'. (parse_linespec): Change `argptr' to const char * and rename `arg'. All uses updated. Update function description. (linespec_parser_new): Initialize `parser'. Update initialization of parsing stream. (event_location_to_sals): New function. (decode_line_full): Change `argptr' to a struct event_location and rename it `location'. Use locations instead of address strings. Call event_location_to_sals instead of parse_linespec. (decode_line_1): Likewise. (decode_line_with_current_source, decode_line_with_last_displayed) Use locations instead of address strings. (decode_objc): Likewise. Change `argptr' to const char * and rename `arg'. (destroy_linespec_result): Delete the linespec result's location instead of freeing the address string. * linespec.h (struct linespec_result) <addr_string>: Change to struct event_location and rename to ... <location>: ... this. (decode_line_1, decode_line_full): Change `argptr' to struct event_location. All callers updated. * mi/mi-cmd-break.c: Include language.h, location.h, and linespec.h. (mi_cmd_break_insert_1): Use locations instead of address strings. Throw an error if there was "garbage" at the end of the specified linespec. * probe.c: Include location.h. (parse_probes): Change `argptr' to struct event_location. Use event locations instead of address strings. * probe.h (parse_probes): Change `argptr' to struct event_location. * python/py-breakpoint.c: Include location.h. (bppy_get_location): Constify local variable `str'. Use event_location_to_string. (bppy_init): Use locations instead of address strings. * python/py-finishbreakpoint.c: Include location.h. (bpfinishpy_init): Remove local variable `addr_str'. Use locations instead of address strings. * python/python.c: Include location.h. (gdbpy_decode_line): Use locations instead of address strings. * remote.c: Include location.h. (remote_download_tracepoint): Use locations instead of address strings. * spu-tdep.c: Include location.h. (spu_catch_start): Remove local variable `buf'. Use locations instead of address strings. * tracepoint.c: Include location.h. (scope_info): Use locations instead of address strings. (encode_source_string): Constify parameter `src'. * tracepoint.h (encode_source_string): Likewise. gdb/testsuite/ChangeLog * gdb.base/dprintf-pending.exp: Update dprintf "without format" test. Add tests for missing ",FMT" and ",".
2015-08-12 02:09:35 +02:00
cleanup = make_cleanup_delete_event_location (location);
Limit breakpoint re-set to the current program space Currently, we always re-set all locations of all breakpoints. This commit makes us re-set only locations of the current program space. If we loaded symbols to a program space (e.g., "file" command or some shared library was loaded), GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. However, there's no reason to recreate locations for _other_ program spaces, as those haven't changed. Similarly, when we create a new inferior, through e.g., a fork, GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. There's no reason to destroy the locations of the parent inferior and other inferiors. We know those won't change. In addition to being inneficient, resetting breakpoints of inferiors that are currently running is problematic, because: - some targets can't read memory while the inferior is running. - the inferior might exit while we're re-setting its breakpoints, which may confuse prologue skipping. I went through all the places where we call breakpoint_re_set, and it seems to me that all can be changed to only re-set locations of the current program space. The patch that reversed threads order in "info threads" etc. happened to make gdb.threads/fork-plus-thread.exp expose this problem when testing on x86/-m32. The problem was latent and masked out by chance by the code-cache: https://sourceware.org/ml/gdb-patches/2016-01/msg00213.html Tested on x86-64 F20, native (-m64/-m32) and extended-remote gdbserver. Fixes the regression discussed in the url above with --target_board=unix/-m32: -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left (timeout) -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left (the program exited) +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left gdb/ChangeLog: 2016-01-19 Pedro Alves <palves@redhat.com> * ax-gdb.c (agent_command_1): Adjust call to decode_line_full. * break-catch-throw.c (re_set_exception_catchpoint): Pass the current program space down to linespec decoding and breakpoint location updating. * breakpoint.c (parse_breakpoint_sals): Adjust calls to decode_line_full. (until_break_command): Adjust calls to decode_line_1. (base_breakpoint_decode_location, bkpt_decode_location): Add 'search_pspace' parameter. Pass it along. (bkpt_probe_create_sals_from_location): Adjust calls to parse_probes. (tracepoint_decode_location, tracepoint_probe_decode_location) (strace_marker_decode_location): Add 'search_pspace' parameter. Pass it along. (all_locations_are_pending): Rewrite to take a breakpoint and program space as arguments instead. (hoist_existing_locations): New function. (update_breakpoint_locations): Add 'filter_pspace' parameter. Use hoist_existing_locations instead of always removing all locations, and adjust to all_locations_are_pending change. (location_to_sals): Add 'search_pspace' parameter. Pass it along. Don't disable the breakpoint if there are other locations in another program space. (breakpoint_re_set_default): Adjust to pass down the current program space as filter program space. (decode_location_default): Add 'search_pspace' parameter and pass it along. (prepare_re_set_context): Don't switch program space here. (breakpoint_re_set): Use save_current_space_and_thread instead of save_current_program_space. * breakpoint.h (struct breakpoint_ops) <decode_location>: Add 'search_pspace' parameter. (update_breakpoint_locations): Add 'filter_pspace' parameter. * cli/cli-cmds.c (edit_command, list_command): Adjust calls to decode_line_1. * elfread.c (elf_gnu_ifunc_resolver_return_stop): Pass the current program space as filter program space. * linespec.c (struct linespec_state) <search_pspace>: New field. (create_sals_line_offset, convert_explicit_location_to_sals) (parse_linespec): Pass the search program space down. (linespec_state_constructor): Add 'search_pspace' parameter. Store it. (linespec_parser_new): Add 'search_pspace' parameter and pass it along. (linespec_lex_to_end): Adjust. (decode_line_full, decode_line_1): Add 'search_pspace' parameter and pass it along. (decode_line_with_last_displayed): Adjust. (collect_symtabs_from_filename, symtabs_from_filename): New 'search_pspace' parameter. Use it. (find_function_symbols): Pass the search program space down. * linespec.h (decode_line_1, decode_line_full): Add 'search_pspace' parameter. * probe.c (parse_probes_in_pspace): New function, factored out from ... (parse_probes): ... this. Add 'search_pspace' parameter and use it. * probe.h (parse_probes): Add pspace' parameter. * python/python.c (gdbpy_decode_line): Adjust. * tracepoint.c (scope_info): Adjust.
2016-01-19 13:18:14 +01:00
self->ops->decode_location (self, location, filter_pspace, &sals);
Explicit locations: use new location API This patch converts the code base to use the new struct event_location API being introduced. This patch preserves the current functionality and adds no new features. The "big picture" API usage introduced by this patch may be illustrated with a simple exmaple. Where previously developers would write: void my_command (char *arg, int from_tty) { create_breakpoint (..., arg, ...); ... } one now uses: void my_command (char *arg, int from_tty) { struct event_locaiton *location; struct cleanup *back_to; location = string_to_event_locaiton (&arg, ...); back_to = make_cleanup_delete_event_location (location); create_breakpoint (..., location, ...); do_cleanups (back_to); } Linespec-decoding functions (now called location-decoding) such as decode_line_full no longer skip argument pointers over processed input. That functionality has been moved into string_to_event_location as demonstrated above. gdb/ChangeLog * ax-gdb.c: Include location.h. (agent_command_1) Use linespec location instead of address string. * break-catch-throw.c: Include location.h. (re_set_exception_catchpoint): Use linespec locations instead of address strings. * breakpoint.c: Include location.h. (create_overlay_event_breakpoint, create_longjmp_master_breakpoint) (create_std_terminate_master_breakpoint) (create_exception_master_breakpoint, update_breakpoints_after_exec): Use linespec location instead of address string. (print_breakpoint_location): Use locations and event_location_to_string. Print extra_string for pending locations for non-MI streams. (print_one_breakpoint_location): Use locations and event_location_to_string. (init_raw_breakpoint_without_location): Initialize b->location. (create_thread_event_breakpoint): Use linespec location instead of address string. (init_breakpoint_sal): Likewise. Only save extra_string if it is non-NULL and not the empty string. Use event_location_to_string instead of `addr_string'. Constify `p' and `endp'. Use skip_spaces_const/skip_space_const instead of non-const versions. Copy the location into the breakpoint. If LOCATION is NULL, save the breakpoint address as a linespec location instead of an address string. (create_breakpoint_sal): Change `addr_string' parameter to a struct event_location. All uses updated. (create_breakpoints_sal): Likewise for local variable `addr_string'. (parse_breakpoint_sals): Use locations instead of address strings. Remove check for empty linespec with conditional. Refactor. (decode_static_tracepoint_spec): Make argument const and update function. (create_breakpoint): Change `arg' to a struct event_location and rename. Remove `copy_arg' and `addr_start'. If EXTRA_STRING is empty, set it to NULL. Don't populate `canonical' for pending breakpoints. Pass `extra_string' to find_condition_and_thread. Clear `extra_string' if `rest' was NULL. Do not error with "garbage after location" if setting a dprintf breakpoint. Copy the location into the breakpoint instead of an address string. (break_command_1): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Check against `arg_cp' for a probe linespec. (dprintf_command): Use string_to_event_location and pass this to create_breakpoint instead of an address string. Throw an exception if no format string was specified. (print_recreate_ranged_breakpoint): Use event_location_to_string instead of address strings. (break_range_command, until_break_command) (init_ada_exception_breakpoint): Use locations instead of address strings. (say_where): Print out extra_string for pending locations. (base_breakpoint_dtor): Delete `location' and `location_range_end' of the breakpoint. (base_breakpoint_create_sals_from_location): Use struct event_location instead of address string. Remove `addr_start' and `copy_arg' parameters. (base_breakpoint_decode_location): Use struct event_location instead of address string. (bkpt_re_set): Use locations instead of address strings. Use event_location_empty_p to check for unset location. (bkpt_print_recreate): Use event_location_to_string instead of an address string. Print out extra_string for pending locations. (bkpt_create_sals_from_location, bkpt_decode_location) (bkpt_probe_create_sals_from_location): Use struct event_location instead of address string. (bkpt_probe_decode_location): Use struct event_location instead of address string. (tracepoint_print_recreate): Use event_location_to_string to recreate the tracepoint. (tracepoint_create_sals_from_location, tracepoint_decode_location) (tracepoint_probe_create_sals_from_location) (tracepoint_probe_decode_location): Use struct event_location instead of address string. (dprintf_print_recreate): Use event_location_to_string to recreate the dprintf. (dprintf_re_set): Remove check for valid/missing format string. (strace_marker_create_sals_from_location) (strace_marker_create_breakpoints_sal, strace_marker_decode_location) (update_static_tracepoint): Use struct event_location instead of address string. (location_to_sals): Likewise. Pass `extra_string' to find_condition_and_thread. For newly resolved pending breakpoint locations, clear the location's string representation. Assert that the breakpoint's condition string is NULL when condition_not_parsed. (breakpoint_re_set_default, create_sals_from_location_default) (decode_location_default, trace_command, ftrace_command) (strace_command, create_tracepoint_from_upload): Use locations instead of address strings. * breakpoint.h (struct breakpoint_ops) <create_sals_from_location>: Use struct event_location instead of address string. Update all uses. <decode_location>: Likewise. (struct breakpoint) <addr_string>: Change to struct event_location and rename `location'. <addr_string_range_end>: Change to struct event_location and rename `location_range_end'. (create_breakpoint): Use struct event_location instead of address string. * cli/cli-cmds.c: Include location.h. (edit_command, list_command): Use locations instead of address strings. * elfread.c: Include location.h. (elf_gnu_ifunc_resolver_return_stop): Use event_location_to_string. * guile/scm-breakpoint.c: Include location.h. (bpscm_print_breakpoint_smob): Use event_location_to_string. (gdbscm_register_breakpoint): Use locations instead of address strings. * linespec.c: Include location.h. (struct ls_parser) <stream>: Change to const char *. (PARSER_STREAM): Update. (lionespec_lexer_lex_keyword): According to find_condition_and_thread, keywords must be followed by whitespace. (canonicalize_linespec): Save a linespec location into `canonical'. Save a canonical linespec into `canonical'. (parse_linespec): Change `argptr' to const char * and rename `arg'. All uses updated. Update function description. (linespec_parser_new): Initialize `parser'. Update initialization of parsing stream. (event_location_to_sals): New function. (decode_line_full): Change `argptr' to a struct event_location and rename it `location'. Use locations instead of address strings. Call event_location_to_sals instead of parse_linespec. (decode_line_1): Likewise. (decode_line_with_current_source, decode_line_with_last_displayed) Use locations instead of address strings. (decode_objc): Likewise. Change `argptr' to const char * and rename `arg'. (destroy_linespec_result): Delete the linespec result's location instead of freeing the address string. * linespec.h (struct linespec_result) <addr_string>: Change to struct event_location and rename to ... <location>: ... this. (decode_line_1, decode_line_full): Change `argptr' to struct event_location. All callers updated. * mi/mi-cmd-break.c: Include language.h, location.h, and linespec.h. (mi_cmd_break_insert_1): Use locations instead of address strings. Throw an error if there was "garbage" at the end of the specified linespec. * probe.c: Include location.h. (parse_probes): Change `argptr' to struct event_location. Use event locations instead of address strings. * probe.h (parse_probes): Change `argptr' to struct event_location. * python/py-breakpoint.c: Include location.h. (bppy_get_location): Constify local variable `str'. Use event_location_to_string. (bppy_init): Use locations instead of address strings. * python/py-finishbreakpoint.c: Include location.h. (bpfinishpy_init): Remove local variable `addr_str'. Use locations instead of address strings. * python/python.c: Include location.h. (gdbpy_decode_line): Use locations instead of address strings. * remote.c: Include location.h. (remote_download_tracepoint): Use locations instead of address strings. * spu-tdep.c: Include location.h. (spu_catch_start): Remove local variable `buf'. Use locations instead of address strings. * tracepoint.c: Include location.h. (scope_info): Use locations instead of address strings. (encode_source_string): Constify parameter `src'. * tracepoint.h (encode_source_string): Likewise. gdb/testsuite/ChangeLog * gdb.base/dprintf-pending.exp: Update dprintf "without format" test. Add tests for missing ",FMT" and ",".
2015-08-12 02:09:35 +02:00
do_cleanups (cleanup);
* break-catch-throw.c (struct exception_names): New. (exception_functions): Change type. (re_set_exception_catchpoint): Look for SDT probes.
2013-04-15 20:06:42 +02:00
}
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
CATCH (ex, RETURN_MASK_ERROR)
Normalize TRY_CATCH exception handling block This normalizes some exception catch blocks that check for ex.reason to look like this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ALL) { ... } if (ex.reason < 0) { ... } ~~~ This is a preparation step for running a script that converts all TRY_CATCH uses to look like this instead: ~~~ TRY { ... } CATCH (ex, RETURN_MASK_ALL) { ... } END_CATCH ~~~ The motivation for that change is being able to reimplent TRY/CATCH in terms of C++ try/catch. This commit makes it so that: - no condition other than ex.reason < 0 is checked in the if predicate - there's no "else" block to check whether no exception was caught - there's no code between the TRY_CATCH (TRY) block and the 'if (ex.reason < 0)' block (CATCH). - the exception object is no longer referred to outside the if/catch block. Note the local volatile exception objects that are currently defined inside functions that use TRY_CATCH will disappear. In cases it's more convenient to still refer to the exception outside the catch block, a new non-volatile local is added and copy to that object is made within the catch block. The following patches should make this all clearer. gdb/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> * amd64-tdep.c (amd64_frame_cache, amd64_sigtramp_frame_cache) (amd64_epilogue_frame_cache): Normal exception handling code. * break-catch-throw.c (check_status_exception_catchpoint) (re_set_exception_catchpoint): Ditto. * cli/cli-interp.c (safe_execute_command): * cli/cli-script.c (script_from_file): Ditto. * compile/compile-c-symbols.c (generate_c_for_for_one_variable): Ditto. * compile/compile-object-run.c (compile_object_run): Ditto. * cp-abi.c (baseclass_offset): Ditto. * cp-valprint.c (cp_print_value): Ditto. * exceptions.c (catch_exceptions_with_msg): * frame-unwind.c (frame_unwind_try_unwinder): Ditto. * frame.c (get_frame_address_in_block_if_available): Ditto. * i386-tdep.c (i386_frame_cache, i386_epilogue_frame_cache) (i386_sigtramp_frame_cache): Ditto. * infcmd.c (post_create_inferior): Ditto. * linespec.c (parse_linespec, find_linespec_symbols): * p-valprint.c (pascal_object_print_value): Ditto. * parse.c (parse_expression_for_completion): Ditto. * python/py-finishbreakpoint.c (bpfinishpy_init): Ditto. * remote.c (remote_get_noisy_reply): Ditto. * s390-linux-tdep.c (s390_frame_unwind_cache): Ditto. * solib-svr4.c (solib_svr4_r_map): Ditto.
2015-03-07 15:50:04 +01:00
{
/* NOT_FOUND_ERROR just means the breakpoint will be
pending, so let it through. */
if (ex.error != NOT_FOUND_ERROR)
throw_exception (ex);
}
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
END_CATCH
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
}
Split TRY_CATCH into TRY + CATCH This patch splits the TRY_CATCH macro into three, so that we go from this: ~~~ volatile gdb_exception ex; TRY_CATCH (ex, RETURN_MASK_ERROR) { } if (ex.reason < 0) { } ~~~ to this: ~~~ TRY { } CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH ~~~ Thus, we'll be getting rid of the local volatile exception object, and declaring the caught exception in the catch block. This allows reimplementing TRY/CATCH in terms of C++ exceptions when building in C++ mode, while still allowing to build GDB in C mode (using setjmp/longjmp), as a transition step. TBC, after this patch, is it _not_ valid to have code between the TRY and the CATCH blocks, like: TRY { } // some code here. CATCH (ex, RETURN_MASK_ERROR) { } END_CATCH Just like it isn't valid to do that with C++'s native try/catch. By switching to creating the exception object inside the CATCH block scope, we can get rid of all the explicitly allocated volatile exception objects all over the tree, and map the CATCH block more directly to C++'s catch blocks. The majority of the TRY_CATCH -> TRY+CATCH+END_CATCH conversion was done with a script, rerun from scratch at every rebase, no manual editing involved. After the mechanical conversion, a few places needed manual intervention, to fix preexisting cases where we were using the exception object outside of the TRY_CATCH block, and cases where we were using "else" after a 'if (ex.reason) < 0)' [a CATCH after this patch]. The result was folded into this patch so that GDB still builds at each incremental step. END_CATCH is necessary for two reasons: First, because we name the exception object in the CATCH block, which requires creating a scope, which in turn must be closed somewhere. Declaring the exception variable in the initializer field of a for block, like: #define CATCH(EXCEPTION, mask) \ for (struct gdb_exception EXCEPTION; \ exceptions_state_mc_catch (&EXCEPTION, MASK); \ EXCEPTION = exception_none) would avoid needing END_CATCH, but alas, in C mode, we build with C90, which doesn't allow mixed declarations and code. Second, because when TRY/CATCH are wired to real C++ try/catch, as long as we need to handle cleanup chains, even if there's no CATCH block that wants to catch the exception, we need for stop at every frame in the unwind chain and run cleanups, then rethrow. That will be done in END_CATCH. After we require C++, we'll still need TRY/CATCH/END_CATCH until cleanups are completely phased out -- TRY/CATCH in C++ mode will save/restore the current cleanup chain, like in C mode, and END_CATCH catches otherwise uncaugh exceptions, runs cleanups and rethrows, so that C++ cleanups and exceptions can coexist. IMO, this still makes the TRY/CATCH code look a bit more like a newcomer would expect, so IMO worth it even if we weren't considering C++. gdb/ChangeLog. 2015-03-07 Pedro Alves <palves@redhat.com> * common/common-exceptions.c (struct catcher) <exception>: No longer a pointer to volatile exception. Now an exception value. <mask>: Delete field. (exceptions_state_mc_init): Remove all parameters. Adjust. (exceptions_state_mc): No longer pop the catcher here. (exceptions_state_mc_catch): New function. (throw_exception): Adjust. * common/common-exceptions.h (exceptions_state_mc_init): Remove all parameters. (exceptions_state_mc_catch): Declare. (TRY_CATCH): Rename to ... (TRY): ... this. Remove EXCEPTION and MASK parameters. (CATCH, END_CATCH): New. All callers adjusted. gdb/gdbserver/ChangeLog: 2015-03-07 Pedro Alves <palves@redhat.com> Adjust all callers of TRY_CATCH to use TRY/CATCH/END_CATCH instead.
2015-03-07 16:14:14 +01:00
END_CATCH
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
cleanup = make_cleanup (xfree, sals.sals);
Limit breakpoint re-set to the current program space Currently, we always re-set all locations of all breakpoints. This commit makes us re-set only locations of the current program space. If we loaded symbols to a program space (e.g., "file" command or some shared library was loaded), GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. However, there's no reason to recreate locations for _other_ program spaces, as those haven't changed. Similarly, when we create a new inferior, through e.g., a fork, GDB must run through all breakpoints and determine if any new locations need to be added to the breakpoint. There's no reason to destroy the locations of the parent inferior and other inferiors. We know those won't change. In addition to being inneficient, resetting breakpoints of inferiors that are currently running is problematic, because: - some targets can't read memory while the inferior is running. - the inferior might exit while we're re-setting its breakpoints, which may confuse prologue skipping. I went through all the places where we call breakpoint_re_set, and it seems to me that all can be changed to only re-set locations of the current program space. The patch that reversed threads order in "info threads" etc. happened to make gdb.threads/fork-plus-thread.exp expose this problem when testing on x86/-m32. The problem was latent and masked out by chance by the code-cache: https://sourceware.org/ml/gdb-patches/2016-01/msg00213.html Tested on x86-64 F20, native (-m64/-m32) and extended-remote gdbserver. Fixes the regression discussed in the url above with --target_board=unix/-m32: -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: inferior 1 exited -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left (timeout) -FAIL: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left (the program exited) +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: no threads left +PASS: gdb.threads/fork-plus-threads.exp: detach-on-fork=off: only inferior 1 left gdb/ChangeLog: 2016-01-19 Pedro Alves <palves@redhat.com> * ax-gdb.c (agent_command_1): Adjust call to decode_line_full. * break-catch-throw.c (re_set_exception_catchpoint): Pass the current program space down to linespec decoding and breakpoint location updating. * breakpoint.c (parse_breakpoint_sals): Adjust calls to decode_line_full. (until_break_command): Adjust calls to decode_line_1. (base_breakpoint_decode_location, bkpt_decode_location): Add 'search_pspace' parameter. Pass it along. (bkpt_probe_create_sals_from_location): Adjust calls to parse_probes. (tracepoint_decode_location, tracepoint_probe_decode_location) (strace_marker_decode_location): Add 'search_pspace' parameter. Pass it along. (all_locations_are_pending): Rewrite to take a breakpoint and program space as arguments instead. (hoist_existing_locations): New function. (update_breakpoint_locations): Add 'filter_pspace' parameter. Use hoist_existing_locations instead of always removing all locations, and adjust to all_locations_are_pending change. (location_to_sals): Add 'search_pspace' parameter. Pass it along. Don't disable the breakpoint if there are other locations in another program space. (breakpoint_re_set_default): Adjust to pass down the current program space as filter program space. (decode_location_default): Add 'search_pspace' parameter and pass it along. (prepare_re_set_context): Don't switch program space here. (breakpoint_re_set): Use save_current_space_and_thread instead of save_current_program_space. * breakpoint.h (struct breakpoint_ops) <decode_location>: Add 'search_pspace' parameter. (update_breakpoint_locations): Add 'filter_pspace' parameter. * cli/cli-cmds.c (edit_command, list_command): Adjust calls to decode_line_1. * elfread.c (elf_gnu_ifunc_resolver_return_stop): Pass the current program space as filter program space. * linespec.c (struct linespec_state) <search_pspace>: New field. (create_sals_line_offset, convert_explicit_location_to_sals) (parse_linespec): Pass the search program space down. (linespec_state_constructor): Add 'search_pspace' parameter. Store it. (linespec_parser_new): Add 'search_pspace' parameter and pass it along. (linespec_lex_to_end): Adjust. (decode_line_full, decode_line_1): Add 'search_pspace' parameter and pass it along. (decode_line_with_last_displayed): Adjust. (collect_symtabs_from_filename, symtabs_from_filename): New 'search_pspace' parameter. Use it. (find_function_symbols): Pass the search program space down. * linespec.h (decode_line_1, decode_line_full): Add 'search_pspace' parameter. * probe.c (parse_probes_in_pspace): New function, factored out from ... (parse_probes): ... this. Add 'search_pspace' parameter and use it. * probe.h (parse_probes): Add pspace' parameter. * python/python.c (gdbpy_decode_line): Adjust. * tracepoint.c (scope_info): Adjust.
2016-01-19 13:18:14 +01:00
update_breakpoint_locations (self, filter_pspace, sals, sals_end);
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
do_cleanups (cleanup);
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
}
static enum print_stop_action
print_it_exception_catchpoint (bpstat bs)
{
struct ui_out *uiout = current_uiout;
struct breakpoint *b = bs->breakpoint_at;
int bp_temp;
enum exception_event_kind kind = classify_exception_breakpoint (b);
annotate_catchpoint (b->number);
Fix PR threads/19422 - show which thread caused stop This commit changes GDB like this: - Program received signal SIGINT, Interrupt. + Thread 1 "main" received signal SIGINT, Interrupt. - Breakpoint 1 at 0x40087a: file threads.c, line 87. + Thread 3 "bar" hit Breakpoint 1 at 0x40087a: file threads.c, line 87. ... once the program goes multi-threaded. Until GDB sees a second thread spawn, the output is still the same as before, per the discussion back in 2012: https://www.sourceware.org/ml/gdb/2012-11/msg00010.html This helps non-stop mode, where you can't easily tell which thread hit a breakpoint or received a signal: (gdb) info threads Id Target Id Frame * 1 Thread 0x7ffff7fc1740 (LWP 19362) "main" (running) 2 Thread 0x7ffff7fc0700 (LWP 19366) "foo" (running) 3 Thread 0x7ffff77bf700 (LWP 19367) "bar" (running) (gdb) Program received signal SIGUSR1, User defined signal 1. 0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92 92 lll_wait_tid (pd->tid); (gdb) b threads.c:87 Breakpoint 1 at 0x40087a: file threads.c, line 87. (gdb) Breakpoint 1, thread_function1 (arg=0x1) at threads.c:87 87 usleep (1); /* Loop increment. */ The best the user can do is run "info threads" and try to figure things out. It actually also affects all-stop mode, in case of "handle SIG print nostop": ... Program received signal SIGUSR1, User defined signal 1. Program received signal SIGUSR1, User defined signal 1. Program received signal SIGUSR1, User defined signal 1. Program received signal SIGUSR1, User defined signal 1. ... The above doesn't give any clue that these were different threads getting the SIGUSR1 signal. I initially thought of lowercasing "breakpoint" in "Thread 3 hit Breakpoint 1" but then after trying it I realized that leaving "Breakpoint" uppercase helps the eye quickly find the relevant information. It's also easier to implement not showing anything about threads until the program goes multi-threaded this way. Here's a larger example session in non-stop mode: (gdb) c -a& Continuing. (gdb) interrupt -a (gdb) Thread 1 "main" stopped. 0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92 92 lll_wait_tid (pd->tid); Thread 2 "foo" stopped. 0x0000003615ebc6ed in nanosleep () at ../sysdeps/unix/syscall-template.S:81 81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) Thread 3 "bar" stopped. 0x0000003615ebc6ed in nanosleep () at ../sysdeps/unix/syscall-template.S:81 81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) b threads.c:87 Breakpoint 4 at 0x40087a: file threads.c, line 87. (gdb) b threads.c:67 Breakpoint 5 at 0x400811: file threads.c, line 67. (gdb) c -a& Continuing. (gdb) Thread 3 "bar" hit Breakpoint 4, thread_function1 (arg=0x1) at threads.c:87 87 usleep (1); /* Loop increment. */ Thread 2 "foo" hit Breakpoint 5, thread_function0 (arg=0x0) at threads.c:68 68 (*myp) ++; info threads Id Target Id Frame * 1 Thread 0x7ffff7fc1740 (LWP 31957) "main" (running) 2 Thread 0x7ffff7fc0700 (LWP 31961) "foo" thread_function0 (arg=0x0) at threads.c:68 3 Thread 0x7ffff77bf700 (LWP 31962) "bar" thread_function1 (arg=0x1) at threads.c:87 (gdb) shell kill -SIGINT 31957 (gdb) Thread 1 "main" received signal SIGINT, Interrupt. 0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92 92 lll_wait_tid (pd->tid); info threads Id Target Id Frame * 1 Thread 0x7ffff7fc1740 (LWP 31957) "main" 0x0000003616a09237 in pthread_join (threadid=140737353877248, thread_return=0x7fffffffd5b8) at pthread_join.c:92 2 Thread 0x7ffff7fc0700 (LWP 31961) "foo" thread_function0 (arg=0x0) at threads.c:68 3 Thread 0x7ffff77bf700 (LWP 31962) "bar" thread_function1 (arg=0x1) at threads.c:87 (gdb) t 2 [Switching to thread 2, Thread 0x7ffff7fc0700 (LWP 31961)] #0 thread_function0 (arg=0x0) at threads.c:68 68 (*myp) ++; (gdb) catch syscall Catchpoint 6 (any syscall) (gdb) c& Continuing. (gdb) Thread 2 "foo" hit Catchpoint 6 (call to syscall nanosleep), 0x0000003615ebc6ed in nanosleep () at ../sysdeps/unix/syscall-template.S:81 81 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS) I'll work on documentation next if this looks agreeable. This patch applies on top of the star wildcards thread IDs series: https://sourceware.org/ml/gdb-patches/2016-01/msg00291.html For convenience, I've pushed this to the users/palves/show-which-thread-caused-stop branch. gdb/doc/ChangeLog: 2016-01-18 Pedro Alves <palves@redhat.com> * gdb.texinfo (Threads): Mention that GDB displays the ID and name of the thread that hit a breakpoint or received a signal. gdb/ChangeLog: 2016-01-18 Pedro Alves <palves@redhat.com> * NEWS: Mention that GDB now displays the ID and name of the thread that hit a breakpoint or received a signal. * break-catch-sig.c (signal_catchpoint_print_it): Use maybe_print_thread_hit_breakpoint. * break-catch-syscall.c (print_it_catch_syscall): Likewise. * break-catch-throw.c (print_it_exception_catchpoint): Likewise. * breakpoint.c (maybe_print_thread_hit_breakpoint): New function. (print_it_catch_fork, print_it_catch_vfork, print_it_catch_solib) (print_it_catch_exec, print_it_ranged_breakpoint) (print_it_watchpoint, print_it_masked_watchpoint, bkpt_print_it): Use maybe_print_thread_hit_breakpoint. * breakpoint.h (maybe_print_thread_hit_breakpoint): Declare. * gdbthread.h (show_thread_that_caused_stop): Declare. * infrun.c (print_signal_received_reason): Print which thread received signal. * thread.c (show_thread_that_caused_stop): New function. gdb/testsuite/ChangeLog: 2016-01-18 Pedro Alves <palves@redhat.com> * gdb.base/async-shell.exp: Adjust expected output. * gdb.base/dprintf-non-stop.exp: Adjust expected output. * gdb.base/siginfo-thread.exp: Adjust expected output. * gdb.base/watchpoint-hw-hit-once.exp: Adjust expected output. * gdb.java/jnpe.exp: Adjust expected output. * gdb.threads/clone-new-thread-event.exp: Adjust expected output. * gdb.threads/continue-pending-status.exp: Adjust expected output. * gdb.threads/leader-exit.exp: Adjust expected output. * gdb.threads/manythreads.exp: Adjust expected output. * gdb.threads/pthreads.exp: Adjust expected output. * gdb.threads/schedlock.exp: Adjust expected output. * gdb.threads/siginfo-threads.exp: Adjust expected output. * gdb.threads/signal-command-multiple-signals-pending.exp: Adjust expected output. * gdb.threads/signal-delivered-right-thread.exp: Adjust expected output. * gdb.threads/sigthread.exp: Adjust expected output. * gdb.threads/watchpoint-fork.exp: Adjust expected output.
2016-01-18 16:15:18 +01:00
maybe_print_thread_hit_breakpoint (uiout);
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
bp_temp = b->disposition == disp_del;
ui_out_text (uiout,
bp_temp ? "Temporary catchpoint "
: "Catchpoint ");
if (!ui_out_is_mi_like_p (uiout))
ui_out_field_int (uiout, "bkptno", b->number);
ui_out_text (uiout,
(kind == EX_EVENT_THROW ? " (exception thrown), "
: (kind == EX_EVENT_CATCH ? " (exception caught), "
: " (exception rethrown), ")));
if (ui_out_is_mi_like_p (uiout))
{
ui_out_field_string (uiout, "reason",
async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
ui_out_field_int (uiout, "bkptno", b->number);
}
return PRINT_SRC_AND_LOC;
}
static void
print_one_exception_catchpoint (struct breakpoint *b,
struct bp_location **last_loc)
{
struct value_print_options opts;
struct ui_out *uiout = current_uiout;
enum exception_event_kind kind = classify_exception_breakpoint (b);
get_user_print_options (&opts);
if (opts.addressprint)
{
annotate_field (4);
if (b->loc == NULL || b->loc->shlib_disabled)
ui_out_field_string (uiout, "addr", "<PENDING>");
else
ui_out_field_core_addr (uiout, "addr",
b->loc->gdbarch, b->loc->address);
}
annotate_field (5);
if (b->loc)
*last_loc = b->loc;
switch (kind)
{
case EX_EVENT_THROW:
ui_out_field_string (uiout, "what", "exception throw");
if (ui_out_is_mi_like_p (uiout))
ui_out_field_string (uiout, "catch-type", "throw");
break;
case EX_EVENT_RETHROW:
ui_out_field_string (uiout, "what", "exception rethrow");
if (ui_out_is_mi_like_p (uiout))
ui_out_field_string (uiout, "catch-type", "rethrow");
break;
case EX_EVENT_CATCH:
ui_out_field_string (uiout, "what", "exception catch");
if (ui_out_is_mi_like_p (uiout))
ui_out_field_string (uiout, "catch-type", "catch");
break;
}
}
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
/* Implement the 'print_one_detail' method. */
static void
print_one_detail_exception_catchpoint (const struct breakpoint *b,
struct ui_out *uiout)
{
const struct exception_catchpoint *cp
= (const struct exception_catchpoint *) b;
if (cp->exception_rx != NULL)
{
ui_out_text (uiout, _("\tmatching: "));
ui_out_field_string (uiout, "regexp", cp->exception_rx);
ui_out_text (uiout, "\n");
}
}
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
static void
print_mention_exception_catchpoint (struct breakpoint *b)
{
struct ui_out *uiout = current_uiout;
int bp_temp;
enum exception_event_kind kind = classify_exception_breakpoint (b);
bp_temp = b->disposition == disp_del;
ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ")
: _("Catchpoint "));
ui_out_field_int (uiout, "bkptno", b->number);
ui_out_text (uiout, (kind == EX_EVENT_THROW ? _(" (throw)")
: (kind == EX_EVENT_CATCH ? _(" (catch)")
: _(" (rethrow)"))));
}
/* Implement the "print_recreate" breakpoint_ops method for throw and
catch catchpoints. */
static void
print_recreate_exception_catchpoint (struct breakpoint *b,
struct ui_file *fp)
{
int bp_temp;
enum exception_event_kind kind = classify_exception_breakpoint (b);
bp_temp = b->disposition == disp_del;
fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch ");
switch (kind)
{
case EX_EVENT_THROW:
fprintf_unfiltered (fp, "throw");
break;
case EX_EVENT_CATCH:
fprintf_unfiltered (fp, "catch");
break;
case EX_EVENT_RETHROW:
fprintf_unfiltered (fp, "rethrow");
break;
}
print_recreate_thread (b, fp);
}
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
static void
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
handle_gnu_v3_exceptions (int tempflag, char *except_rx, char *cond_string,
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
enum exception_event_kind ex_event, int from_tty)
{
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
struct exception_catchpoint *cp;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
struct cleanup *cleanup = make_cleanup (null_cleanup, NULL);
regex_t *pattern = NULL;
if (except_rx != NULL)
{
pattern = XNEW (regex_t);
make_cleanup (xfree, pattern);
compile_rx_or_error (pattern, except_rx,
_("invalid type-matching regexp"));
}
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
cp = XCNEW (struct exception_catchpoint);
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
make_cleanup (xfree, cp);
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
init_catchpoint (&cp->base, get_current_arch (), tempflag, cond_string,
&gnu_v3_exception_catchpoint_ops);
/* We need to reset 'type' in order for code in breakpoint.c to do
the right thing. */
cp->base.type = bp_breakpoint;
cp->kind = ex_event;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
cp->exception_rx = except_rx;
cp->pattern = pattern;
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
re_set_exception_catchpoint (&cp->base);
install_breakpoint (0, &cp->base, 1);
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
discard_cleanups (cleanup);
}
/* Look for an "if" token in *STRING. The "if" token must be preceded
by whitespace.
If there is any non-whitespace text between *STRING and the "if"
token, then it is returned in a newly-xmalloc'd string. Otherwise,
this returns NULL.
STRING is updated to point to the "if" token, if it exists, or to
the end of the string. */
static char *
extract_exception_regexp (char **string)
{
char *start;
char *last, *last_space;
start = skip_spaces (*string);
last = start;
last_space = start;
while (*last != '\0')
{
char *if_token = last;
/* Check for the "if". */
if (check_for_argument (&if_token, "if", 2))
break;
/* No "if" token here. Skip to the next word start. */
last_space = skip_to_space (last);
last = skip_spaces (last_space);
}
*string = last;
if (last_space > start)
return savestring (start, last_space - start);
return NULL;
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
}
/* Deal with "catch catch", "catch throw", and "catch rethrow"
commands. */
static void
catch_exception_command_1 (enum exception_event_kind ex_event, char *arg,
int tempflag, int from_tty)
{
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
char *except_rx;
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
char *cond_string = NULL;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
struct cleanup *cleanup;
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
if (!arg)
arg = "";
arg = skip_spaces (arg);
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
except_rx = extract_exception_regexp (&arg);
cleanup = make_cleanup (xfree, except_rx);
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
cond_string = ep_parse_optional_if_clause (&arg);
if ((*arg != '\0') && !isspace (*arg))
error (_("Junk at end of arguments."));
if (ex_event != EX_EVENT_THROW
&& ex_event != EX_EVENT_CATCH
&& ex_event != EX_EVENT_RETHROW)
error (_("Unsupported or unknown exception event; cannot catch it"));
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
handle_gnu_v3_exceptions (tempflag, except_rx, cond_string,
ex_event, from_tty);
discard_cleanups (cleanup);
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
}
/* Implementation of "catch catch" command. */
static void
catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command)
{
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty);
}
/* Implementation of "catch throw" command. */
static void
catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command)
{
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty);
}
/* Implementation of "catch rethrow" command. */
static void
catch_rethrow_command (char *arg, int from_tty,
struct cmd_list_element *command)
{
int tempflag = get_cmd_context (command) == CATCH_TEMPORARY;
catch_exception_command_1 (EX_EVENT_RETHROW, arg, tempflag, from_tty);
}
PR c++/15176: * NEWS: Update. * break-catch-throw.c (compute_exception): New function. (exception_funcs): New global. (_initialize_break_catch_throw): Create $_exception. * cp-abi.c (cplus_type_from_type_info): New function. * cp-abi.h (cplus_type_from_type_info): Declare. (struct cp_abi_ops) <get_type_from_type_info>: New field. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info) (gnuv3_get_type_from_type_info): New functions. (init_gnuv3_ops): Set get_type_from_type_info ABI field. gdb/doc * gdb.texinfo (Set Catchpoints): Document $_exception. (Convenience Vars): Mention $_exception. gdb/testsuite * gdb.base/default.exp: Update for $_exception. * gdb.cp/exceptprint.cc: New file. * gdb.cp/exceptprint.exp: New file. * lib/gdb.exp (skip_libstdcxx_probe_tests): New proc.
2013-04-15 20:09:02 +02:00
/* Implement the 'make_value' method for the $_exception
internalvar. */
static struct value *
compute_exception (struct gdbarch *argc, struct internalvar *var, void *ignore)
{
struct value *arg0, *arg1;
struct type *obj_type;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
fetch_probe_arguments (&arg0, &arg1);
PR c++/15176: * NEWS: Update. * break-catch-throw.c (compute_exception): New function. (exception_funcs): New global. (_initialize_break_catch_throw): Create $_exception. * cp-abi.c (cplus_type_from_type_info): New function. * cp-abi.h (cplus_type_from_type_info): Declare. (struct cp_abi_ops) <get_type_from_type_info>: New field. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info) (gnuv3_get_type_from_type_info): New functions. (init_gnuv3_ops): Set get_type_from_type_info ABI field. gdb/doc * gdb.texinfo (Set Catchpoints): Document $_exception. (Convenience Vars): Mention $_exception. gdb/testsuite * gdb.base/default.exp: Update for $_exception. * gdb.cp/exceptprint.cc: New file. * gdb.cp/exceptprint.exp: New file. * lib/gdb.exp (skip_libstdcxx_probe_tests): New proc.
2013-04-15 20:09:02 +02:00
/* ARG0 is a pointer to the exception object. ARG1 is a pointer to
the std::type_info for the exception. Now we find the type from
the type_info and cast the result. */
obj_type = cplus_type_from_type_info (arg1);
return value_ind (value_cast (make_pointer_type (obj_type, NULL), arg0));
}
/* Implementation of the '$_exception' variable. */
static const struct internalvar_funcs exception_funcs =
{
compute_exception,
NULL,
NULL
};
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
static void
initialize_throw_catchpoint_ops (void)
{
struct breakpoint_ops *ops;
initialize_breakpoint_ops ();
/* GNU v3 exception catchpoints. */
ops = &gnu_v3_exception_catchpoint_ops;
*ops = bkpt_breakpoint_ops;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
ops->dtor = dtor_exception_catchpoint;
PR c++/10119: * break-catch-throw.c (exception_functions): New global. (gnu_v3_exception_catchpoint_ops): Move earlier. (struct exception_catchpoint): New. (classify_exception_breakpoint): Rewrite. (re_set_exception_catchpoint): New function. (handle_gnu_v3_exceptions): Return void. Use init_catchpoint. Allocate a struct exception_catchpoint. (catch_exception_command_1): Update. (initialize_throw_catchpoint_ops): Set 're_set' method.
2013-04-15 20:05:48 +02:00
ops->re_set = re_set_exception_catchpoint;
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
ops->print_it = print_it_exception_catchpoint;
ops->print_one = print_one_exception_catchpoint;
ops->print_mention = print_mention_exception_catchpoint;
ops->print_recreate = print_recreate_exception_catchpoint;
PR c++/13588: * NEWS: Update. * break-catch-throw.c (struct exception_catchpoint) <exception_rx, pattern>: New fields. (fetch_probe_arguments, dtor_exception_catchpoint) (check_status_exception_catchpoint) (print_one_detail_exception_catchpoint): New functions. (handle_gnu_v3_exceptions): Add "except_rx" argument. Compile regular expression if needed. (extract_exception_regexp): New function. (catch_exception_command_1): Use extract_exception_regexp. (compute_exception): Use fetch_probe_arguments. (initialize_throw_catchpoint_ops): Set dtor, print_one_detail, and check_status fields. * cp-abi.c (cplus_typename_from_type_info): New function. * cp-abi.h (cplus_typename_from_type_info): Declare. (struct cp_abi_ops) <get_typename_from_type_info>: New field. * gdb_regex.h (compile_rx_or_error): Declare. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info): Update comment. (init_gnuv3_ops): Set get_type_from_type_info field. * probe.c (compile_rx_or_error): Move... * utils.c (compile_rx_or_error): ... here. gdb/doc * gdb.texinfo (Set Catchpoints): Document regexp syntax for exception catchpoints. gdb/testsuite * gdb.cp/exceptprint.exp: Add regexp catchpoint tests.
2013-04-15 20:13:01 +02:00
ops->print_one_detail = print_one_detail_exception_catchpoint;
ops->check_status = check_status_exception_catchpoint;
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
}
initialize_file_ftype _initialize_break_catch_throw;
void
_initialize_break_catch_throw (void)
{
initialize_throw_catchpoint_ops ();
/* Add catch and tcatch sub-commands. */
add_catch_command ("catch", _("\
Catch an exception, when caught."),
catch_catch_command,
NULL,
CATCH_PERMANENT,
CATCH_TEMPORARY);
add_catch_command ("throw", _("\
Catch an exception, when thrown."),
catch_throw_command,
NULL,
CATCH_PERMANENT,
CATCH_TEMPORARY);
add_catch_command ("rethrow", _("\
Catch an exception, when rethrown."),
catch_rethrow_command,
NULL,
CATCH_PERMANENT,
CATCH_TEMPORARY);
PR c++/15176: * NEWS: Update. * break-catch-throw.c (compute_exception): New function. (exception_funcs): New global. (_initialize_break_catch_throw): Create $_exception. * cp-abi.c (cplus_type_from_type_info): New function. * cp-abi.h (cplus_type_from_type_info): Declare. (struct cp_abi_ops) <get_type_from_type_info>: New field. * gnu-v3-abi.c (gnuv3_get_typename_from_type_info) (gnuv3_get_type_from_type_info): New functions. (init_gnuv3_ops): Set get_type_from_type_info ABI field. gdb/doc * gdb.texinfo (Set Catchpoints): Document $_exception. (Convenience Vars): Mention $_exception. gdb/testsuite * gdb.base/default.exp: Update for $_exception. * gdb.cp/exceptprint.cc: New file. * gdb.cp/exceptprint.exp: New file. * lib/gdb.exp (skip_libstdcxx_probe_tests): New proc.
2013-04-15 20:09:02 +02:00
create_internalvar_type_lazy ("_exception", &exception_funcs, NULL);
* Makefile.in (SFILES): Add break-catch-throw.c (COMMON_OBS): Add break-catch-throw.o. * break-catch-throw.c: New file. * breakpoint.c: Move exception-catching code to new file. (ep_parse_optional_if_clause): No longer static. * breakpoint.h (ep_parse_optional_if_clause): Declare.
2013-04-15 20:04:53 +02:00
}