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https://sourceware.org/git/binutils-gdb.git
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be408939b1
Remove some includes reported as unused by clangd. Change-Id: I36d388bcff166f6baafa212f0bcbe8af64b2946d
2070 lines
74 KiB
C++
2070 lines
74 KiB
C++
/* Data structures associated with breakpoints in GDB.
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Copyright (C) 1992-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#if !defined (BREAKPOINT_H)
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#define BREAKPOINT_H 1
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#include "frame.h"
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#include "value.h"
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#include "ax.h"
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#include "command.h"
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#include "gdbsupport/break-common.h"
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#include "probe.h"
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#include "location.h"
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#include <vector>
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#include "gdbsupport/array-view.h"
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#include "gdbsupport/filtered-iterator.h"
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#include "gdbsupport/iterator-range.h"
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#include "gdbsupport/refcounted-object.h"
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#include "gdbsupport/safe-iterator.h"
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#include "cli/cli-script.h"
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#include "target/waitstatus.h"
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struct block;
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struct gdbpy_breakpoint_object;
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struct gdbscm_breakpoint_object;
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struct number_or_range_parser;
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struct thread_info;
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struct bpstat;
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struct bp_location;
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struct linespec_result;
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struct linespec_sals;
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struct inferior;
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/* Enum for exception-handling support in 'catch throw', 'catch rethrow',
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'catch catch' and the MI equivalent. */
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enum exception_event_kind
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{
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EX_EVENT_THROW,
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EX_EVENT_RETHROW,
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EX_EVENT_CATCH
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};
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/* Why are we removing the breakpoint from the target? */
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enum remove_bp_reason
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{
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/* A regular remove. Remove the breakpoint and forget everything
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about it. */
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REMOVE_BREAKPOINT,
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/* Detach the breakpoints from a fork child. */
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DETACH_BREAKPOINT,
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};
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/* This is the maximum number of bytes a breakpoint instruction can
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take. Feel free to increase it. It's just used in a few places to
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size arrays that should be independent of the target
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architecture. */
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#define BREAKPOINT_MAX 16
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/* Type of breakpoint. */
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enum bptype
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{
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bp_none = 0, /* Eventpoint has been deleted */
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bp_breakpoint, /* Normal breakpoint */
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bp_hardware_breakpoint, /* Hardware assisted breakpoint */
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bp_single_step, /* Software single-step */
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bp_until, /* used by until command */
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bp_finish, /* used by finish command */
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bp_watchpoint, /* Watchpoint */
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bp_hardware_watchpoint, /* Hardware assisted watchpoint */
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bp_read_watchpoint, /* read watchpoint, (hardware assisted) */
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bp_access_watchpoint, /* access watchpoint, (hardware assisted) */
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bp_longjmp, /* secret breakpoint to find longjmp() */
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bp_longjmp_resume, /* secret breakpoint to escape longjmp() */
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/* Breakpoint placed to the same location(s) like bp_longjmp but used to
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protect against stale DUMMY_FRAME. Multiple bp_longjmp_call_dummy and
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one bp_call_dummy are chained together by related_breakpoint for each
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DUMMY_FRAME. */
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bp_longjmp_call_dummy,
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/* An internal breakpoint that is installed on the unwinder's
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debug hook. */
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bp_exception,
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/* An internal breakpoint that is set at the point where an
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exception will land. */
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bp_exception_resume,
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/* Used by wait_for_inferior for stepping over subroutine calls,
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and for skipping prologues. */
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bp_step_resume,
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/* Used by wait_for_inferior for stepping over signal
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handlers. */
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bp_hp_step_resume,
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/* Used to detect when a watchpoint expression has gone out of
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scope. These breakpoints are usually not visible to the user.
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This breakpoint has some interesting properties:
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1) There's always a 1:1 mapping between watchpoints
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on local variables and watchpoint_scope breakpoints.
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2) It automatically deletes itself and the watchpoint it's
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associated with when hit.
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3) It can never be disabled. */
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bp_watchpoint_scope,
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/* The breakpoint at the end of a call dummy. See bp_longjmp_call_dummy it
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is chained with by related_breakpoint. */
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bp_call_dummy,
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/* A breakpoint set on std::terminate, that is used to catch
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otherwise uncaught exceptions thrown during an inferior call. */
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bp_std_terminate,
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/* Some dynamic linkers (HP, maybe Solaris) can arrange for special
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code in the inferior to run when significant events occur in the
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dynamic linker (for example a library is loaded or unloaded).
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By placing a breakpoint in this magic code GDB will get control
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when these significant events occur. GDB can then re-examine
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the dynamic linker's data structures to discover any newly loaded
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dynamic libraries. */
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bp_shlib_event,
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/* Some multi-threaded systems can arrange for a location in the
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inferior to be executed when certain thread-related events occur
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(such as thread creation or thread death).
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By placing a breakpoint at one of these locations, GDB will get
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control when these events occur. GDB can then update its thread
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lists etc. */
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bp_thread_event,
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/* On the same principal, an overlay manager can arrange to call a
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magic location in the inferior whenever there is an interesting
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change in overlay status. GDB can update its overlay tables
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and fiddle with breakpoints in overlays when this breakpoint
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is hit. */
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bp_overlay_event,
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/* Master copies of longjmp breakpoints. These are always installed
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as soon as an objfile containing longjmp is loaded, but they are
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always disabled. While necessary, temporary clones of bp_longjmp
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type will be created and enabled. */
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bp_longjmp_master,
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/* Master copies of std::terminate breakpoints. */
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bp_std_terminate_master,
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/* Like bp_longjmp_master, but for exceptions. */
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bp_exception_master,
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bp_catchpoint,
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bp_tracepoint,
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bp_fast_tracepoint,
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bp_static_tracepoint,
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/* Like bp_static_tracepoint but for static markers. */
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bp_static_marker_tracepoint,
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/* A dynamic printf stops at the given location, does a formatted
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print, then automatically continues. (Although this is sort of
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like a macro packaging up standard breakpoint functionality,
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GDB doesn't have a way to construct types of breakpoint from
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elements of behavior.) */
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bp_dprintf,
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/* Event for JIT compiled code generation or deletion. */
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bp_jit_event,
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/* Breakpoint is placed at the STT_GNU_IFUNC resolver. When hit GDB
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inserts new bp_gnu_ifunc_resolver_return at the caller.
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bp_gnu_ifunc_resolver is still being kept here as a different thread
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may still hit it before bp_gnu_ifunc_resolver_return is hit by the
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original thread. */
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bp_gnu_ifunc_resolver,
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/* On its hit GDB now know the resolved address of the target
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STT_GNU_IFUNC function. Associated bp_gnu_ifunc_resolver can be
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deleted now and the breakpoint moved to the target function entry
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point. */
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bp_gnu_ifunc_resolver_return,
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};
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/* States of enablement of breakpoint. */
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enum enable_state
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{
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bp_disabled, /* The eventpoint is inactive, and cannot
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trigger. */
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bp_enabled, /* The eventpoint is active, and can
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trigger. */
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bp_call_disabled, /* The eventpoint has been disabled while a
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call into the inferior is "in flight",
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because some eventpoints interfere with
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the implementation of a call on some
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targets. The eventpoint will be
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automatically enabled and reset when the
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call "lands" (either completes, or stops
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at another eventpoint). */
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};
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/* Disposition of breakpoint. Ie: what to do after hitting it. */
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enum bpdisp
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{
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disp_del, /* Delete it */
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disp_del_at_next_stop, /* Delete at next stop,
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whether hit or not */
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disp_disable, /* Disable it */
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disp_donttouch /* Leave it alone */
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};
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/* Status of breakpoint conditions used when synchronizing
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conditions with the target. */
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enum condition_status
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{
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condition_unchanged = 0,
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condition_modified,
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condition_updated
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};
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/* Information used by targets to insert and remove breakpoints. */
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struct bp_target_info
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{
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/* Address space at which the breakpoint was placed. */
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struct address_space *placed_address_space;
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/* Address at which the breakpoint was placed. This is normally
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the same as REQUESTED_ADDRESS, except when adjustment happens in
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gdbarch_breakpoint_from_pc. The most common form of adjustment
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is stripping an alternate ISA marker from the PC which is used
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to determine the type of breakpoint to insert. */
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CORE_ADDR placed_address;
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/* Address at which the breakpoint was requested. */
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CORE_ADDR reqstd_address;
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/* If this is a ranged breakpoint, then this field contains the
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length of the range that will be watched for execution. */
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int length;
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/* If the breakpoint lives in memory and reading that memory would
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give back the breakpoint, instead of the original contents, then
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the original contents are cached here. Only SHADOW_LEN bytes of
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this buffer are valid, and only when the breakpoint is inserted. */
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gdb_byte shadow_contents[BREAKPOINT_MAX];
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/* The length of the data cached in SHADOW_CONTENTS. */
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int shadow_len;
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/* The breakpoint's kind. It is used in 'kind' parameter in Z
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packets. */
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int kind;
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/* Conditions the target should evaluate if it supports target-side
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breakpoint conditions. These are non-owning pointers. */
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std::vector<agent_expr *> conditions;
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/* Commands the target should evaluate if it supports target-side
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breakpoint commands. These are non-owning pointers. */
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std::vector<agent_expr *> tcommands;
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/* Flag that is true if the breakpoint should be left in place even
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when GDB is not connected. */
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int persist;
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};
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/* GDB maintains two types of information about each breakpoint (or
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watchpoint, or other related event). The first type corresponds
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to struct breakpoint; this is a relatively high-level structure
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which contains the source location(s), stopping conditions, user
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commands to execute when the breakpoint is hit, and so forth.
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The second type of information corresponds to struct bp_location.
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Each breakpoint has one or (eventually) more locations associated
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with it, which represent target-specific and machine-specific
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mechanisms for stopping the program. For instance, a watchpoint
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expression may require multiple hardware watchpoints in order to
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catch all changes in the value of the expression being watched. */
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enum bp_loc_type
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{
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bp_loc_software_breakpoint,
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bp_loc_hardware_breakpoint,
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bp_loc_software_watchpoint,
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bp_loc_hardware_watchpoint,
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bp_loc_tracepoint,
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bp_loc_other /* Miscellaneous... */
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};
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class bp_location : public refcounted_object, public intrusive_list_node<bp_location>
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{
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public:
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/* Construct a bp_location with the type inferred from OWNER's
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type. */
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explicit bp_location (breakpoint *owner);
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/* Construct a bp_location with type TYPE. */
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bp_location (breakpoint *owner, bp_loc_type type);
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virtual ~bp_location () = default;
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/* Type of this breakpoint location. */
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bp_loc_type loc_type {};
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/* Each breakpoint location must belong to exactly one higher-level
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breakpoint. This pointer is NULL iff this bp_location is no
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longer attached to a breakpoint. For example, when a breakpoint
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is deleted, its locations may still be found in the
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moribund_locations list, or if we had stopped for it, in
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bpstats. */
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breakpoint *owner = NULL;
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/* Conditional. Break only if this expression's value is nonzero.
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Unlike string form of condition, which is associated with
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breakpoint, this is associated with location, since if breakpoint
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has several locations, the evaluation of expression can be
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different for different locations. Only valid for real
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breakpoints; a watchpoint's conditional expression is stored in
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the owner breakpoint object. */
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expression_up cond;
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/* Conditional expression in agent expression
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bytecode form. This is used for stub-side breakpoint
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condition evaluation. */
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agent_expr_up cond_bytecode;
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/* Signals that the condition has changed since the last time
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we updated the global location list. This means the condition
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needs to be sent to the target again. This is used together
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with target-side breakpoint conditions.
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condition_unchanged: It means there has been no condition changes.
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condition_modified: It means this location had its condition modified.
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condition_updated: It means we already marked all the locations that are
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duplicates of this location and thus we don't need to call
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force_breakpoint_reinsertion (...) for this location. */
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condition_status condition_changed {};
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agent_expr_up cmd_bytecode;
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/* Signals that breakpoint conditions and/or commands need to be
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re-synced with the target. This has no use other than
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target-side breakpoints. */
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bool needs_update = false;
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/* This location's address is in an unloaded solib, and so this
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location should not be inserted. It will be automatically
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enabled when that solib is loaded. */
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bool shlib_disabled = false;
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/* Is this particular location enabled. */
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bool enabled = false;
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/* Is this particular location disabled because the condition
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expression is invalid at this location. For a location to be
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reported as enabled, the ENABLED field above has to be true *and*
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the DISABLED_BY_COND field has to be false. */
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bool disabled_by_cond = false;
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/* True if this breakpoint is now inserted. */
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bool inserted = false;
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/* True if this is a permanent breakpoint. There is a breakpoint
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instruction hard-wired into the target's code. Don't try to
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write another breakpoint instruction on top of it, or restore its
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value. Step over it using the architecture's
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gdbarch_skip_permanent_breakpoint method. */
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bool permanent = false;
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/* True if this is not the first breakpoint in the list
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for the given address. location of tracepoint can _never_
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be duplicated with other locations of tracepoints and other
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kinds of breakpoints, because two locations at the same
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address may have different actions, so both of these locations
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should be downloaded and so that `tfind N' always works. */
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bool duplicate = false;
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/* If we someday support real thread-specific breakpoints, then
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the breakpoint location will need a thread identifier. */
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/* Data for specific breakpoint types. These could be a union, but
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simplicity is more important than memory usage for breakpoints. */
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/* Architecture associated with this location's address. May be
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different from the breakpoint architecture. */
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struct gdbarch *gdbarch = NULL;
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/* The program space associated with this breakpoint location
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address. Note that an address space may be represented in more
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than one program space (e.g. each uClinux program will be given
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its own program space, but there will only be one address space
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for all of them), but we must not insert more than one location
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at the same address in the same address space. */
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program_space *pspace = NULL;
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/* Note that zero is a perfectly valid code address on some platforms
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(for example, the mn10200 (OBSOLETE) and mn10300 simulators). NULL
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is not a special value for this field. Valid for all types except
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bp_loc_other. */
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CORE_ADDR address = 0;
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/* For hardware watchpoints, the size of the memory region being
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watched. For hardware ranged breakpoints, the size of the
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breakpoint range. */
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int length = 0;
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/* Type of hardware watchpoint. */
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target_hw_bp_type watchpoint_type {};
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/* For any breakpoint type with an address, this is the section
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associated with the address. Used primarily for overlay
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debugging. */
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obj_section *section = NULL;
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/* Address at which breakpoint was requested, either by the user or
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by GDB for internal breakpoints. This will usually be the same
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as ``address'' (above) except for cases in which
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ADJUST_BREAKPOINT_ADDRESS has computed a different address at
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which to place the breakpoint in order to comply with a
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processor's architectual constraints. */
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CORE_ADDR requested_address = 0;
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/* An additional address assigned with this location. This is currently
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only used by STT_GNU_IFUNC resolver breakpoints to hold the address
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of the resolver function. */
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CORE_ADDR related_address = 0;
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/* If the location comes from a probe point, this is the probe associated
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with it. */
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bound_probe probe {};
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gdb::unique_xmalloc_ptr<char> function_name;
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/* Details of the placed breakpoint, when inserted. */
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bp_target_info target_info {};
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/* Similarly, for the breakpoint at an overlay's LMA, if necessary. */
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bp_target_info overlay_target_info {};
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/* In a non-stop mode, it's possible that we delete a breakpoint,
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but as we do that, some still running thread hits that breakpoint.
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For that reason, we need to keep locations belonging to deleted
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breakpoints for a bit, so that don't report unexpected SIGTRAP.
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We can't keep such locations forever, so we use a heuristic --
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after we process certain number of inferior events since
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breakpoint was deleted, we retire all locations of that breakpoint.
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This variable keeps a number of events still to go, when
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it becomes 0 this location is retired. */
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int events_till_retirement = 0;
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/* Line number which was used to place this location.
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Breakpoint placed into a comment keeps it's user specified line number
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despite ADDRESS resolves into a different line number. */
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int line_number = 0;
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/* Symtab which was used to place this location. This is used
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to find the corresponding source file name. */
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struct symtab *symtab = NULL;
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/* The symbol found by the location parser, if any. This may be used to
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ascertain when a location spec was set at a different location than
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the one originally selected by parsing, e.g., inlined symbols. */
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const struct symbol *symbol = NULL;
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/* Similarly, the minimal symbol found by the location parser, if
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any. This may be used to ascertain if the location was
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originally set on a GNU ifunc symbol. */
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const minimal_symbol *msymbol = NULL;
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/* The objfile the symbol or minimal symbol were found in. */
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const struct objfile *objfile = NULL;
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/* Return a string representation of the bp_location.
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This is only meant to be used in debug messages. */
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std::string to_string () const;
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};
|
||
|
||
/* A policy class for bp_location reference counting. */
|
||
struct bp_location_ref_policy
|
||
{
|
||
static void incref (bp_location *loc)
|
||
{
|
||
loc->incref ();
|
||
}
|
||
|
||
static void decref (bp_location *loc)
|
||
{
|
||
gdb_assert (loc->refcount () > 0);
|
||
loc->decref ();
|
||
if (loc->refcount () == 0)
|
||
delete loc;
|
||
}
|
||
};
|
||
|
||
/* A gdb::ref_ptr that has been specialized for bp_location. */
|
||
typedef gdb::ref_ptr<bp_location, bp_location_ref_policy>
|
||
bp_location_ref_ptr;
|
||
|
||
/* The possible return values for print_bpstat, print_it_normal,
|
||
print_it_done, print_it_noop. */
|
||
enum print_stop_action
|
||
{
|
||
/* We printed nothing or we need to do some more analysis. */
|
||
PRINT_UNKNOWN = -1,
|
||
|
||
/* We printed something, and we *do* desire that something to be
|
||
followed by a location. */
|
||
PRINT_SRC_AND_LOC,
|
||
|
||
/* We printed something, and we do *not* desire that something to be
|
||
followed by a location. */
|
||
PRINT_SRC_ONLY,
|
||
|
||
/* We already printed all we needed to print, don't print anything
|
||
else. */
|
||
PRINT_NOTHING
|
||
};
|
||
|
||
/* This structure is a collection of function pointers that, if available,
|
||
will be called instead of the performing the default action for this
|
||
bptype. */
|
||
|
||
struct breakpoint_ops
|
||
{
|
||
/* Create SALs from location spec, storing the result in
|
||
linespec_result.
|
||
|
||
For an explanation about the arguments, see the function
|
||
`create_sals_from_location_spec_default'.
|
||
|
||
This function is called inside `create_breakpoint'. */
|
||
void (*create_sals_from_location_spec) (location_spec *locspec,
|
||
struct linespec_result *canonical);
|
||
|
||
/* This method will be responsible for creating a breakpoint given its SALs.
|
||
Usually, it just calls `create_breakpoints_sal' (for ordinary
|
||
breakpoints). However, there may be some special cases where we might
|
||
need to do some tweaks, e.g., see
|
||
`strace_marker_create_breakpoints_sal'.
|
||
|
||
This function is called inside `create_breakpoint'. */
|
||
void (*create_breakpoints_sal) (struct gdbarch *,
|
||
struct linespec_result *,
|
||
gdb::unique_xmalloc_ptr<char>,
|
||
gdb::unique_xmalloc_ptr<char>,
|
||
enum bptype, enum bpdisp, int, int, int,
|
||
int, int, int, int, unsigned);
|
||
};
|
||
|
||
enum watchpoint_triggered
|
||
{
|
||
/* This watchpoint definitely did not trigger. */
|
||
watch_triggered_no = 0,
|
||
|
||
/* Some hardware watchpoint triggered, and it might have been this
|
||
one, but we do not know which it was. */
|
||
watch_triggered_unknown,
|
||
|
||
/* This hardware watchpoint definitely did trigger. */
|
||
watch_triggered_yes
|
||
};
|
||
|
||
/* Some targets (e.g., embedded PowerPC) need two debug registers to set
|
||
a watchpoint over a memory region. If this flag is true, GDB will use
|
||
only one register per watchpoint, thus assuming that all accesses that
|
||
modify a memory location happen at its starting address. */
|
||
|
||
extern bool target_exact_watchpoints;
|
||
|
||
using bp_location_list = intrusive_list<bp_location>;
|
||
using bp_location_iterator = bp_location_list::iterator;
|
||
using bp_location_range = iterator_range<bp_location_iterator>;
|
||
|
||
/* Note that the ->silent field is not currently used by any commands
|
||
(though the code is in there if it was to be, and set_raw_breakpoint
|
||
does set it to 0). I implemented it because I thought it would be
|
||
useful for a hack I had to put in; I'm going to leave it in because
|
||
I can see how there might be times when it would indeed be useful */
|
||
|
||
/* Abstract base class representing all kinds of breakpoints. */
|
||
|
||
struct breakpoint : public intrusive_list_node<breakpoint>
|
||
{
|
||
breakpoint (struct gdbarch *gdbarch_, enum bptype bptype,
|
||
bool temp = true, const char *cond_string = nullptr);
|
||
|
||
DISABLE_COPY_AND_ASSIGN (breakpoint);
|
||
|
||
virtual ~breakpoint () = 0;
|
||
|
||
/* Allocate a location for this breakpoint. */
|
||
virtual struct bp_location *allocate_location ();
|
||
|
||
/* Return a range of this breakpoint's locations. */
|
||
bp_location_range locations () const;
|
||
|
||
/* Add LOC to the location list of this breakpoint, sorted by address
|
||
(using LOC.ADDRESS).
|
||
|
||
LOC must have this breakpoint as its owner. LOC must not already be linked
|
||
in a location list. */
|
||
void add_location (bp_location &loc);
|
||
|
||
/* Remove LOC from this breakpoint's location list. The name is a bit funny
|
||
because remove_location is already taken, and means something else.
|
||
|
||
LOC must be have this breakpoints as its owner. LOC must be linked in this
|
||
breakpoint's location list. */
|
||
void unadd_location (bp_location &loc);
|
||
|
||
/* Clear the location list of this breakpoint. */
|
||
void clear_locations ()
|
||
{ m_locations.clear (); }
|
||
|
||
/* Split all locations of this breakpoint that are bound to PSPACE out of its
|
||
location list to a separate list and return that list. If
|
||
PSPACE is nullptr, hoist out all locations. */
|
||
bp_location_list steal_locations (program_space *pspace);
|
||
|
||
/* Return true if this breakpoint has a least one location. */
|
||
bool has_locations () const
|
||
{ return !m_locations.empty (); }
|
||
|
||
/* Return true if this breakpoint has a single location. */
|
||
bool has_single_location () const
|
||
{
|
||
if (!this->has_locations ())
|
||
return false;
|
||
|
||
return std::next (m_locations.begin ()) == m_locations.end ();
|
||
}
|
||
|
||
/* Return true if this breakpoint has multiple locations. */
|
||
bool has_multiple_locations () const
|
||
{
|
||
if (!this->has_locations ())
|
||
return false;
|
||
|
||
return std::next (m_locations.begin ()) != m_locations.end ();
|
||
}
|
||
|
||
/* Return a reference to the first location of this breakpoint. */
|
||
bp_location &first_loc ()
|
||
{
|
||
gdb_assert (this->has_locations ());
|
||
return m_locations.front ();
|
||
}
|
||
|
||
/* Return a reference to the first location of this breakpoint. */
|
||
const bp_location &first_loc () const
|
||
{
|
||
gdb_assert (this->has_locations ());
|
||
return m_locations.front ();
|
||
}
|
||
|
||
/* Return a reference to the last location of this breakpoint. */
|
||
const bp_location &last_loc () const
|
||
{
|
||
gdb_assert (this->has_locations ());
|
||
return m_locations.back ();
|
||
}
|
||
|
||
/* Reevaluate a breakpoint. This is necessary after symbols change
|
||
(e.g., an executable or DSO was loaded, or the inferior just
|
||
started). */
|
||
virtual void re_set ()
|
||
{
|
||
/* Nothing to re-set. */
|
||
}
|
||
|
||
/* Insert the breakpoint or watchpoint or activate the catchpoint.
|
||
Return 0 for success, 1 if the breakpoint, watchpoint or
|
||
catchpoint type is not supported, -1 for failure. */
|
||
virtual int insert_location (struct bp_location *);
|
||
|
||
/* Remove the breakpoint/catchpoint that was previously inserted
|
||
with the "insert" method above. Return 0 for success, 1 if the
|
||
breakpoint, watchpoint or catchpoint type is not supported,
|
||
-1 for failure. */
|
||
virtual int remove_location (struct bp_location *,
|
||
enum remove_bp_reason reason);
|
||
|
||
/* Return true if it the target has stopped due to hitting
|
||
breakpoint location BL. This function does not check if we
|
||
should stop, only if BL explains the stop. ASPACE is the address
|
||
space in which the event occurred, BP_ADDR is the address at
|
||
which the inferior stopped, and WS is the target_waitstatus
|
||
describing the event. */
|
||
virtual int breakpoint_hit (const struct bp_location *bl,
|
||
const address_space *aspace,
|
||
CORE_ADDR bp_addr,
|
||
const target_waitstatus &ws);
|
||
|
||
/* Check internal conditions of the breakpoint referred to by BS.
|
||
If we should not stop for this breakpoint, set BS->stop to
|
||
false. */
|
||
virtual void check_status (struct bpstat *bs)
|
||
{
|
||
/* Always stop. */
|
||
}
|
||
|
||
/* Tell how many hardware resources (debug registers) are needed
|
||
for this breakpoint. If this function is not provided, then
|
||
the breakpoint or watchpoint needs one debug register. */
|
||
virtual int resources_needed (const struct bp_location *);
|
||
|
||
/* The normal print routine for this breakpoint, called when we
|
||
hit it. */
|
||
virtual enum print_stop_action print_it (const bpstat *bs) const;
|
||
|
||
/* Display information about this breakpoint, for "info
|
||
breakpoints". Returns false if this method should use the
|
||
default behavior. */
|
||
virtual bool print_one (const bp_location **) const
|
||
{
|
||
return false;
|
||
}
|
||
|
||
/* Display extra information about this breakpoint, below the normal
|
||
breakpoint description in "info breakpoints".
|
||
|
||
In the example below, the "address range" line was printed
|
||
by ranged_breakpoint::print_one_detail.
|
||
|
||
(gdb) info breakpoints
|
||
Num Type Disp Enb Address What
|
||
2 hw breakpoint keep y in main at test-watch.c:70
|
||
address range: [0x10000458, 0x100004c7]
|
||
|
||
*/
|
||
virtual void print_one_detail (struct ui_out *) const
|
||
{
|
||
/* Nothing. */
|
||
}
|
||
|
||
/* Display information about this breakpoint after setting it
|
||
(roughly speaking; this is called from "mention"). */
|
||
virtual void print_mention () const;
|
||
|
||
/* Print to FP the CLI command that recreates this breakpoint. */
|
||
virtual void print_recreate (struct ui_file *fp) const;
|
||
|
||
/* Return true if this breakpoint explains a signal. See
|
||
bpstat_explains_signal. */
|
||
virtual bool explains_signal (enum gdb_signal)
|
||
{
|
||
return true;
|
||
}
|
||
|
||
/* Called after evaluating the breakpoint's condition,
|
||
and only if it evaluated true. */
|
||
virtual void after_condition_true (struct bpstat *bs)
|
||
{
|
||
/* Nothing to do. */
|
||
}
|
||
|
||
/* Type of breakpoint. */
|
||
bptype type = bp_none;
|
||
/* Zero means disabled; remember the info but don't break here. */
|
||
enum enable_state enable_state = bp_enabled;
|
||
/* What to do with this breakpoint after we hit it. */
|
||
bpdisp disposition = disp_del;
|
||
/* Number assigned to distinguish breakpoints. */
|
||
int number = 0;
|
||
|
||
/* True means a silent breakpoint (don't print frame info if we stop
|
||
here). */
|
||
bool silent = false;
|
||
/* True means display ADDR_STRING to the user verbatim. */
|
||
bool display_canonical = false;
|
||
/* Number of stops at this breakpoint that should be continued
|
||
automatically before really stopping. */
|
||
int ignore_count = 0;
|
||
|
||
/* Number of stops at this breakpoint before it will be
|
||
disabled. */
|
||
int enable_count = 0;
|
||
|
||
/* Chain of command lines to execute when this breakpoint is
|
||
hit. */
|
||
counted_command_line commands;
|
||
/* Stack depth (address of frame). If nonzero, break only if fp
|
||
equals this. */
|
||
struct frame_id frame_id = null_frame_id;
|
||
|
||
/* The program space used to set the breakpoint. This is only set
|
||
for breakpoints which are specific to a program space; for
|
||
non-thread-specific ordinary breakpoints this is NULL. */
|
||
program_space *pspace = NULL;
|
||
|
||
/* The location specification we used to set the breakpoint. */
|
||
location_spec_up locspec;
|
||
|
||
/* The filter that should be passed to decode_line_full when
|
||
re-setting this breakpoint. This may be NULL. */
|
||
gdb::unique_xmalloc_ptr<char> filter;
|
||
|
||
/* For a ranged breakpoint, the location specification we used to
|
||
find the end of the range. */
|
||
location_spec_up locspec_range_end;
|
||
|
||
/* Architecture we used to set the breakpoint. */
|
||
struct gdbarch *gdbarch;
|
||
/* Language we used to set the breakpoint. */
|
||
enum language language;
|
||
/* Input radix we used to set the breakpoint. */
|
||
int input_radix;
|
||
/* String form of the breakpoint condition (malloc'd), or NULL if
|
||
there is no condition. */
|
||
gdb::unique_xmalloc_ptr<char> cond_string;
|
||
|
||
/* String form of extra parameters, or NULL if there are none.
|
||
Malloc'd. */
|
||
gdb::unique_xmalloc_ptr<char> extra_string;
|
||
|
||
/* Holds the address of the related watchpoint_scope breakpoint when
|
||
using watchpoints on local variables (might the concept of a
|
||
related breakpoint be useful elsewhere, if not just call it the
|
||
watchpoint_scope breakpoint or something like that. FIXME). */
|
||
breakpoint *related_breakpoint;
|
||
|
||
/* Thread number for thread-specific breakpoint, or -1 if don't
|
||
care. */
|
||
int thread = -1;
|
||
|
||
/* Inferior number for inferior-specific breakpoint, or -1 if this
|
||
breakpoint is for all inferiors. */
|
||
int inferior = -1;
|
||
|
||
/* Ada task number for task-specific breakpoint, or -1 if don't
|
||
care. */
|
||
int task = -1;
|
||
|
||
/* Count of the number of times this breakpoint was taken, dumped
|
||
with the info, but not used for anything else. Useful for seeing
|
||
how many times you hit a break prior to the program aborting, so
|
||
you can back up to just before the abort. */
|
||
int hit_count = 0;
|
||
|
||
/* Is breakpoint's condition not yet parsed because we found no
|
||
location initially so had no context to parse the condition
|
||
in. */
|
||
int condition_not_parsed = 0;
|
||
|
||
/* With a Python scripting enabled GDB, store a reference to the
|
||
Python object that has been associated with this breakpoint.
|
||
This is always NULL for a GDB that is not script enabled. It can
|
||
sometimes be NULL for enabled GDBs as not all breakpoint types
|
||
are tracked by the scripting language API. */
|
||
gdbpy_breakpoint_object *py_bp_object = NULL;
|
||
|
||
/* Same as py_bp_object, but for Scheme. */
|
||
gdbscm_breakpoint_object *scm_bp_object = NULL;
|
||
|
||
protected:
|
||
|
||
/* Helper for breakpoint_ops->print_recreate implementations. Prints
|
||
the "thread" or "task" condition of B, and then a newline.
|
||
|
||
Necessary because most breakpoint implementations accept
|
||
thread/task conditions at the end of the spec line, like "break foo
|
||
thread 1", which needs outputting before any breakpoint-type
|
||
specific extra command necessary for B's recreation. */
|
||
void print_recreate_thread (struct ui_file *fp) const;
|
||
|
||
/* Location(s) associated with this high-level breakpoint. */
|
||
bp_location_list m_locations;
|
||
};
|
||
|
||
/* Abstract base class representing code breakpoints. User "break"
|
||
breakpoints, internal and momentary breakpoints, etc. IOW, any
|
||
kind of breakpoint whose locations are created from SALs. */
|
||
struct code_breakpoint : public breakpoint
|
||
{
|
||
using breakpoint::breakpoint;
|
||
|
||
/* Create a breakpoint with SALS as locations. Use LOCATION as a
|
||
description of the location, and COND_STRING as condition
|
||
expression. If LOCATION is NULL then create an "address
|
||
location" from the address in the SAL. */
|
||
code_breakpoint (struct gdbarch *gdbarch, bptype type,
|
||
gdb::array_view<const symtab_and_line> sals,
|
||
location_spec_up &&locspec,
|
||
gdb::unique_xmalloc_ptr<char> filter,
|
||
gdb::unique_xmalloc_ptr<char> cond_string,
|
||
gdb::unique_xmalloc_ptr<char> extra_string,
|
||
enum bpdisp disposition,
|
||
int thread, int task, int inferior, int ignore_count,
|
||
int from_tty,
|
||
int enabled, unsigned flags,
|
||
int display_canonical);
|
||
|
||
~code_breakpoint () override = 0;
|
||
|
||
/* Add a location for SAL to this breakpoint. */
|
||
bp_location *add_location (const symtab_and_line &sal);
|
||
|
||
void re_set () override;
|
||
int insert_location (struct bp_location *) override;
|
||
int remove_location (struct bp_location *,
|
||
enum remove_bp_reason reason) override;
|
||
int breakpoint_hit (const struct bp_location *bl,
|
||
const address_space *aspace,
|
||
CORE_ADDR bp_addr,
|
||
const target_waitstatus &ws) override;
|
||
|
||
protected:
|
||
|
||
/* Given the location spec, this method decodes it and returns the
|
||
SAL locations related to it. For ordinary breakpoints, it calls
|
||
`decode_line_full'. If SEARCH_PSPACE is not NULL, symbol search
|
||
is restricted to just that program space.
|
||
|
||
This function is called inside `location_spec_to_sals'. */
|
||
virtual std::vector<symtab_and_line> decode_location_spec
|
||
(location_spec *locspec,
|
||
struct program_space *search_pspace);
|
||
|
||
/* Helper method that does the basic work of re_set. */
|
||
void re_set_default ();
|
||
|
||
/* Find the SaL locations corresponding to the given LOCATION.
|
||
On return, FOUND will be 1 if any SaL was found, zero otherwise. */
|
||
|
||
std::vector<symtab_and_line> location_spec_to_sals
|
||
(location_spec *locspec,
|
||
struct program_space *search_pspace,
|
||
int *found);
|
||
|
||
/* Helper for breakpoint and tracepoint breakpoint->mention
|
||
callbacks. */
|
||
void say_where () const;
|
||
};
|
||
|
||
/* An instance of this type is used to represent a watchpoint,
|
||
a.k.a. a data breakpoint. */
|
||
|
||
struct watchpoint : public breakpoint
|
||
{
|
||
using breakpoint::breakpoint;
|
||
|
||
void re_set () override;
|
||
int insert_location (struct bp_location *) override;
|
||
int remove_location (struct bp_location *,
|
||
enum remove_bp_reason reason) override;
|
||
int breakpoint_hit (const struct bp_location *bl,
|
||
const address_space *aspace,
|
||
CORE_ADDR bp_addr,
|
||
const target_waitstatus &ws) override;
|
||
void check_status (struct bpstat *bs) override;
|
||
int resources_needed (const struct bp_location *) override;
|
||
|
||
/* Tell whether we can downgrade from a hardware watchpoint to a software
|
||
one. If not, the user will not be able to enable the watchpoint when
|
||
there are not enough hardware resources available. */
|
||
virtual bool works_in_software_mode () const;
|
||
|
||
enum print_stop_action print_it (const bpstat *bs) const override;
|
||
void print_mention () const override;
|
||
void print_recreate (struct ui_file *fp) const override;
|
||
bool explains_signal (enum gdb_signal) override;
|
||
|
||
/* Destructor for WATCHPOINT. */
|
||
~watchpoint ();
|
||
|
||
/* String form of exp to use for displaying to the user (malloc'd),
|
||
or NULL if none. */
|
||
gdb::unique_xmalloc_ptr<char> exp_string;
|
||
/* String form to use for reparsing of EXP (malloc'd) or NULL. */
|
||
gdb::unique_xmalloc_ptr<char> exp_string_reparse;
|
||
|
||
/* The expression we are watching, or NULL if not a watchpoint. */
|
||
expression_up exp;
|
||
/* The largest block within which it is valid, or NULL if it is
|
||
valid anywhere (e.g. consists just of global symbols). */
|
||
const struct block *exp_valid_block;
|
||
/* The conditional expression if any. */
|
||
expression_up cond_exp;
|
||
/* The largest block within which it is valid, or NULL if it is
|
||
valid anywhere (e.g. consists just of global symbols). */
|
||
const struct block *cond_exp_valid_block;
|
||
/* Value of the watchpoint the last time we checked it, or NULL when
|
||
we do not know the value yet or the value was not readable. VAL
|
||
is never lazy. */
|
||
value_ref_ptr val;
|
||
|
||
/* True if VAL is valid. If VAL_VALID is set but VAL is NULL,
|
||
then an error occurred reading the value. */
|
||
bool val_valid;
|
||
|
||
/* When watching the location of a bitfield, contains the offset and size of
|
||
the bitfield. Otherwise contains 0. */
|
||
int val_bitpos;
|
||
int val_bitsize;
|
||
|
||
/* Holds the frame address which identifies the frame this
|
||
watchpoint should be evaluated in, or `null' if the watchpoint
|
||
should be evaluated on the outermost frame. */
|
||
struct frame_id watchpoint_frame;
|
||
|
||
/* Holds the thread which identifies the frame this watchpoint
|
||
should be considered in scope for, or `null_ptid' if the
|
||
watchpoint should be evaluated in all threads. */
|
||
ptid_t watchpoint_thread;
|
||
|
||
/* For hardware watchpoints, the triggered status according to the
|
||
hardware. */
|
||
enum watchpoint_triggered watchpoint_triggered;
|
||
|
||
/* Whether this watchpoint is exact (see
|
||
target_exact_watchpoints). */
|
||
int exact;
|
||
|
||
/* The mask address for a masked hardware watchpoint. */
|
||
CORE_ADDR hw_wp_mask;
|
||
};
|
||
|
||
/* Return true if BPT is either a software breakpoint or a hardware
|
||
breakpoint. */
|
||
|
||
extern bool is_breakpoint (const struct breakpoint *bpt);
|
||
|
||
/* Return true if BPT is of any watchpoint kind, hardware or
|
||
software. */
|
||
|
||
extern bool is_watchpoint (const struct breakpoint *bpt);
|
||
|
||
/* Return true if BPT is a C++ exception catchpoint (catch
|
||
catch/throw/rethrow). */
|
||
|
||
extern bool is_exception_catchpoint (breakpoint *bp);
|
||
|
||
/* An instance of this type is used to represent all kinds of
|
||
tracepoints. */
|
||
|
||
struct tracepoint : public code_breakpoint
|
||
{
|
||
using code_breakpoint::code_breakpoint;
|
||
|
||
int breakpoint_hit (const struct bp_location *bl,
|
||
const address_space *aspace, CORE_ADDR bp_addr,
|
||
const target_waitstatus &ws) override;
|
||
void print_one_detail (struct ui_out *uiout) const override;
|
||
void print_mention () const override;
|
||
void print_recreate (struct ui_file *fp) const override;
|
||
|
||
/* Number of times this tracepoint should single-step and collect
|
||
additional data. */
|
||
long step_count = 0;
|
||
|
||
/* Number of times this tracepoint should be hit before
|
||
disabling/ending. */
|
||
int pass_count = 0;
|
||
|
||
/* The number of the tracepoint on the target. */
|
||
int number_on_target = 0;
|
||
|
||
/* The total space taken by all the trace frames for this
|
||
tracepoint. */
|
||
ULONGEST traceframe_usage = 0;
|
||
|
||
/* The static tracepoint marker id, if known. */
|
||
std::string static_trace_marker_id;
|
||
|
||
/* LTTng/UST allow more than one marker with the same ID string,
|
||
although it unadvised because it confuses tools. When setting
|
||
static tracepoints by marker ID, this will record the index in
|
||
the array of markers we found for the given marker ID for which
|
||
this static tracepoint corresponds. When resetting breakpoints,
|
||
we will use this index to try to find the same marker again. */
|
||
int static_trace_marker_id_idx = 0;
|
||
};
|
||
|
||
/* The abstract base class for catchpoints. */
|
||
|
||
struct catchpoint : public breakpoint
|
||
{
|
||
/* If TEMP is true, then make the breakpoint temporary. If
|
||
COND_STRING is not NULL, then store it in the breakpoint. */
|
||
catchpoint (struct gdbarch *gdbarch, bool temp, const char *cond_string);
|
||
|
||
~catchpoint () override = 0;
|
||
};
|
||
|
||
|
||
/* The following stuff is an abstract data type "bpstat" ("breakpoint
|
||
status"). This provides the ability to determine whether we have
|
||
stopped at a breakpoint, and what we should do about it. */
|
||
|
||
/* Clears a chain of bpstat, freeing storage
|
||
of each. */
|
||
extern void bpstat_clear (bpstat **);
|
||
|
||
/* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that
|
||
is part of the bpstat is copied as well. */
|
||
extern bpstat *bpstat_copy (bpstat *);
|
||
|
||
/* Build the (raw) bpstat chain for the stop information given by ASPACE,
|
||
BP_ADDR, and WS. Returns the head of the bpstat chain. */
|
||
|
||
extern bpstat *build_bpstat_chain (const address_space *aspace,
|
||
CORE_ADDR bp_addr,
|
||
const target_waitstatus &ws);
|
||
|
||
/* Get a bpstat associated with having just stopped at address
|
||
BP_ADDR in thread PTID. STOP_CHAIN may be supplied as a previously
|
||
computed stop chain or NULL, in which case the stop chain will be
|
||
computed using build_bpstat_chain.
|
||
|
||
Determine whether we stopped at a breakpoint, etc, or whether we
|
||
don't understand this stop. Result is a chain of bpstat's such
|
||
that:
|
||
|
||
if we don't understand the stop, the result is a null pointer.
|
||
|
||
if we understand why we stopped, the result is not null.
|
||
|
||
Each element of the chain refers to a particular breakpoint or
|
||
watchpoint at which we have stopped. (We may have stopped for
|
||
several reasons concurrently.)
|
||
|
||
Each element of the chain has valid next, breakpoint_at,
|
||
commands, FIXME??? fields.
|
||
|
||
watchpoints_triggered must be called beforehand to set up each
|
||
watchpoint's watchpoint_triggered value.
|
||
|
||
*/
|
||
|
||
extern bpstat *bpstat_stop_status (const address_space *aspace,
|
||
CORE_ADDR pc, thread_info *thread,
|
||
const target_waitstatus &ws,
|
||
bpstat *stop_chain = nullptr);
|
||
|
||
/* Like bpstat_stop_status, but clears all watchpoints'
|
||
watchpoint_triggered flag. Unlike with bpstat_stop_status, there's
|
||
no need to call watchpoint_triggered beforehand. You'll typically
|
||
use this variant when handling a known-non-watchpoint event, like a
|
||
fork or exec event. */
|
||
|
||
extern bpstat *bpstat_stop_status_nowatch (const address_space *aspace,
|
||
CORE_ADDR bp_addr,
|
||
thread_info *thread,
|
||
const target_waitstatus &ws);
|
||
|
||
|
||
|
||
/* This bpstat_what stuff tells wait_for_inferior what to do with a
|
||
breakpoint (a challenging task).
|
||
|
||
The enum values order defines priority-like order of the actions.
|
||
Once you've decided that some action is appropriate, you'll never
|
||
go back and decide something of a lower priority is better. Each
|
||
of these actions is mutually exclusive with the others. That
|
||
means, that if you find yourself adding a new action class here and
|
||
wanting to tell GDB that you have two simultaneous actions to
|
||
handle, something is wrong, and you probably don't actually need a
|
||
new action type.
|
||
|
||
Note that a step resume breakpoint overrides another breakpoint of
|
||
signal handling (see comment in wait_for_inferior at where we set
|
||
the step_resume breakpoint). */
|
||
|
||
enum bpstat_what_main_action
|
||
{
|
||
/* Perform various other tests; that is, this bpstat does not
|
||
say to perform any action (e.g. failed watchpoint and nothing
|
||
else). */
|
||
BPSTAT_WHAT_KEEP_CHECKING,
|
||
|
||
/* Remove breakpoints, single step once, then put them back in and
|
||
go back to what we were doing. It's possible that this should
|
||
be removed from the main_action and put into a separate field,
|
||
to more cleanly handle
|
||
BPSTAT_WHAT_CLEAR_LONGJMP_RESUME_SINGLE. */
|
||
BPSTAT_WHAT_SINGLE,
|
||
|
||
/* Set longjmp_resume breakpoint, remove all other breakpoints,
|
||
and continue. The "remove all other breakpoints" part is
|
||
required if we are also stepping over another breakpoint as
|
||
well as doing the longjmp handling. */
|
||
BPSTAT_WHAT_SET_LONGJMP_RESUME,
|
||
|
||
/* Clear longjmp_resume breakpoint, then handle as
|
||
BPSTAT_WHAT_KEEP_CHECKING. */
|
||
BPSTAT_WHAT_CLEAR_LONGJMP_RESUME,
|
||
|
||
/* Clear step resume breakpoint, and keep checking. */
|
||
BPSTAT_WHAT_STEP_RESUME,
|
||
|
||
/* Rather than distinguish between noisy and silent stops here, it
|
||
might be cleaner to have bpstat_print make that decision (also
|
||
taking into account stop_print_frame and source_only). But the
|
||
implications are a bit scary (interaction with auto-displays,
|
||
etc.), so I won't try it. */
|
||
|
||
/* Stop silently. */
|
||
BPSTAT_WHAT_STOP_SILENT,
|
||
|
||
/* Stop and print. */
|
||
BPSTAT_WHAT_STOP_NOISY,
|
||
|
||
/* Clear step resume breakpoint, and keep checking. High-priority
|
||
step-resume breakpoints are used when even if there's a user
|
||
breakpoint at the current PC when we set the step-resume
|
||
breakpoint, we don't want to re-handle any breakpoint other
|
||
than the step-resume when it's hit; instead we want to move
|
||
past the breakpoint. This is used in the case of skipping
|
||
signal handlers. */
|
||
BPSTAT_WHAT_HP_STEP_RESUME,
|
||
};
|
||
|
||
/* An enum indicating the kind of "stack dummy" stop. This is a bit
|
||
of a misnomer because only one kind of truly a stack dummy. */
|
||
enum stop_stack_kind
|
||
{
|
||
/* We didn't stop at a stack dummy breakpoint. */
|
||
STOP_NONE = 0,
|
||
|
||
/* Stopped at a stack dummy. */
|
||
STOP_STACK_DUMMY,
|
||
|
||
/* Stopped at std::terminate. */
|
||
STOP_STD_TERMINATE
|
||
};
|
||
|
||
struct bpstat_what
|
||
{
|
||
enum bpstat_what_main_action main_action;
|
||
|
||
/* Did we hit a call dummy breakpoint? This only goes with a
|
||
main_action of BPSTAT_WHAT_STOP_SILENT or
|
||
BPSTAT_WHAT_STOP_NOISY (the concept of continuing from a call
|
||
dummy without popping the frame is not a useful one). */
|
||
enum stop_stack_kind call_dummy;
|
||
|
||
/* Used for BPSTAT_WHAT_SET_LONGJMP_RESUME and
|
||
BPSTAT_WHAT_CLEAR_LONGJMP_RESUME. True if we are handling a
|
||
longjmp, false if we are handling an exception. */
|
||
bool is_longjmp;
|
||
};
|
||
|
||
/* Tell what to do about this bpstat. */
|
||
struct bpstat_what bpstat_what (bpstat *);
|
||
|
||
/* Run breakpoint event callbacks associated with the breakpoints that
|
||
triggered. */
|
||
extern void bpstat_run_callbacks (bpstat *bs_head);
|
||
|
||
/* Find the bpstat associated with a breakpoint. NULL otherwise. */
|
||
bpstat *bpstat_find_breakpoint (bpstat *, struct breakpoint *);
|
||
|
||
/* True if a signal that we got in target_wait() was due to
|
||
circumstances explained by the bpstat; the signal is therefore not
|
||
random. */
|
||
extern bool bpstat_explains_signal (bpstat *, enum gdb_signal);
|
||
|
||
/* True if this bpstat causes a stop. */
|
||
extern bool bpstat_causes_stop (bpstat *);
|
||
|
||
/* True if we should step constantly (e.g. watchpoints on machines
|
||
without hardware support). This isn't related to a specific bpstat,
|
||
just to things like whether watchpoints are set. */
|
||
extern bool bpstat_should_step ();
|
||
|
||
/* Print a message indicating what happened. */
|
||
extern enum print_stop_action bpstat_print (bpstat *bs, target_waitkind kind);
|
||
|
||
/* Put in *NUM the breakpoint number of the first breakpoint we are
|
||
stopped at. *BSP upon return is a bpstat which points to the
|
||
remaining breakpoints stopped at (but which is not guaranteed to be
|
||
good for anything but further calls to bpstat_num).
|
||
|
||
Return 0 if passed a bpstat which does not indicate any breakpoints.
|
||
Return -1 if stopped at a breakpoint that has been deleted since
|
||
we set it.
|
||
Return 1 otherwise. */
|
||
extern int bpstat_num (bpstat **, int *);
|
||
|
||
/* If BS indicates a breakpoint and this breakpoint has several code locations,
|
||
return the location number of BS, otherwise return 0. */
|
||
|
||
extern int bpstat_locno (const bpstat *bs);
|
||
|
||
/* Print BS breakpoint number optionally followed by a . and breakpoint locno.
|
||
|
||
For a breakpoint with only one code location, outputs the signed field
|
||
"bkptno" breakpoint number of BS (as returned by bpstat_num).
|
||
If BS has several code locations, outputs a '.' character followed by
|
||
the signed field "locno" (as returned by bpstat_locno). */
|
||
|
||
extern void print_num_locno (const bpstat *bs, struct ui_out *);
|
||
|
||
/* Perform actions associated with the stopped inferior. Actually, we
|
||
just use this for breakpoint commands. Perhaps other actions will
|
||
go here later, but this is executed at a late time (from the
|
||
command loop). */
|
||
extern void bpstat_do_actions (void);
|
||
|
||
/* Modify all entries of STOP_BPSTAT of INFERIOR_PTID so that the actions will
|
||
not be performed. */
|
||
extern void bpstat_clear_actions (void);
|
||
|
||
/* Implementation: */
|
||
|
||
/* Values used to tell the printing routine how to behave for this
|
||
bpstat. */
|
||
enum bp_print_how
|
||
{
|
||
/* This is used when we want to do a normal printing of the reason
|
||
for stopping. The output will depend on the type of eventpoint
|
||
we are dealing with. This is the default value, most commonly
|
||
used. */
|
||
print_it_normal,
|
||
/* This is used when nothing should be printed for this bpstat
|
||
entry. */
|
||
print_it_noop,
|
||
/* This is used when everything which needs to be printed has
|
||
already been printed. But we still want to print the frame. */
|
||
print_it_done
|
||
};
|
||
|
||
struct bpstat
|
||
{
|
||
bpstat ();
|
||
bpstat (struct bp_location *bl, bpstat ***bs_link_pointer);
|
||
|
||
bpstat (const bpstat &);
|
||
bpstat &operator= (const bpstat &) = delete;
|
||
|
||
/* Linked list because there can be more than one breakpoint at
|
||
the same place, and a bpstat reflects the fact that all have
|
||
been hit. */
|
||
bpstat *next;
|
||
|
||
/* Location that caused the stop. Locations are refcounted, so
|
||
this will never be NULL. Note that this location may end up
|
||
detached from a breakpoint, but that does not necessary mean
|
||
that the struct breakpoint is gone. E.g., consider a
|
||
watchpoint with a condition that involves an inferior function
|
||
call. Watchpoint locations are recreated often (on resumes,
|
||
hence on infcalls too). Between creating the bpstat and after
|
||
evaluating the watchpoint condition, this location may hence
|
||
end up detached from its original owner watchpoint, even though
|
||
the watchpoint is still listed. If it's condition evaluates as
|
||
true, we still want this location to cause a stop, and we will
|
||
still need to know which watchpoint it was originally attached.
|
||
What this means is that we should not (in most cases) follow
|
||
the `bpstat->bp_location->owner' link, but instead use the
|
||
`breakpoint_at' field below. */
|
||
bp_location_ref_ptr bp_location_at;
|
||
|
||
/* Breakpoint that caused the stop. This is nullified if the
|
||
breakpoint ends up being deleted. See comments on
|
||
`bp_location_at' above for why do we need this field instead of
|
||
following the location's owner. */
|
||
struct breakpoint *breakpoint_at;
|
||
|
||
/* The associated command list. */
|
||
counted_command_line commands;
|
||
|
||
/* Old value associated with a watchpoint. */
|
||
value_ref_ptr old_val;
|
||
|
||
/* True if this breakpoint tells us to print the frame. */
|
||
bool print;
|
||
|
||
/* True if this breakpoint tells us to stop. */
|
||
bool stop;
|
||
|
||
/* Tell bpstat_print and print_bp_stop_message how to print stuff
|
||
associated with this element of the bpstat chain. */
|
||
enum bp_print_how print_it;
|
||
};
|
||
|
||
enum inf_context
|
||
{
|
||
inf_starting,
|
||
inf_running,
|
||
inf_exited,
|
||
inf_execd
|
||
};
|
||
|
||
/* The possible return values for breakpoint_here_p.
|
||
We guarantee that zero always means "no breakpoint here". */
|
||
enum breakpoint_here
|
||
{
|
||
no_breakpoint_here = 0,
|
||
ordinary_breakpoint_here,
|
||
permanent_breakpoint_here
|
||
};
|
||
|
||
|
||
/* Prototypes for breakpoint-related functions. */
|
||
|
||
extern enum breakpoint_here breakpoint_here_p (const address_space *,
|
||
CORE_ADDR);
|
||
|
||
/* Return true if an enabled breakpoint exists in the range defined by
|
||
ADDR and LEN, in ASPACE. */
|
||
extern int breakpoint_in_range_p (const address_space *aspace,
|
||
CORE_ADDR addr, ULONGEST len);
|
||
|
||
extern int moribund_breakpoint_here_p (const address_space *, CORE_ADDR);
|
||
|
||
extern int breakpoint_inserted_here_p (const address_space *,
|
||
CORE_ADDR);
|
||
|
||
extern int software_breakpoint_inserted_here_p (const address_space *,
|
||
CORE_ADDR);
|
||
|
||
/* Return non-zero iff there is a hardware breakpoint inserted at
|
||
PC. */
|
||
extern int hardware_breakpoint_inserted_here_p (const address_space *,
|
||
CORE_ADDR);
|
||
|
||
/* Check whether any location of BP is inserted at PC. */
|
||
|
||
extern int breakpoint_has_location_inserted_here (struct breakpoint *bp,
|
||
const address_space *aspace,
|
||
CORE_ADDR pc);
|
||
|
||
extern int single_step_breakpoint_inserted_here_p (const address_space *,
|
||
CORE_ADDR);
|
||
|
||
/* Returns true if there's a hardware watchpoint or access watchpoint
|
||
inserted in the range defined by ADDR and LEN. */
|
||
extern int hardware_watchpoint_inserted_in_range (const address_space *,
|
||
CORE_ADDR addr,
|
||
ULONGEST len);
|
||
|
||
/* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the
|
||
same breakpoint location. In most targets, this can only be true
|
||
if ASPACE1 matches ASPACE2. On targets that have global
|
||
breakpoints, the address space doesn't really matter. */
|
||
|
||
extern int breakpoint_address_match (const address_space *aspace1,
|
||
CORE_ADDR addr1,
|
||
const address_space *aspace2,
|
||
CORE_ADDR addr2);
|
||
|
||
extern void until_break_command (const char *, int, int);
|
||
|
||
/* Initialize a struct bp_location. */
|
||
|
||
extern void update_breakpoint_locations
|
||
(code_breakpoint *b,
|
||
struct program_space *filter_pspace,
|
||
gdb::array_view<const symtab_and_line> sals,
|
||
gdb::array_view<const symtab_and_line> sals_end);
|
||
|
||
extern void breakpoint_re_set (void);
|
||
|
||
extern void breakpoint_re_set_thread (struct breakpoint *);
|
||
|
||
extern void delete_breakpoint (struct breakpoint *);
|
||
|
||
struct breakpoint_deleter
|
||
{
|
||
void operator() (struct breakpoint *b) const
|
||
{
|
||
delete_breakpoint (b);
|
||
}
|
||
};
|
||
|
||
typedef std::unique_ptr<struct breakpoint, breakpoint_deleter> breakpoint_up;
|
||
|
||
extern breakpoint_up set_momentary_breakpoint
|
||
(struct gdbarch *, struct symtab_and_line, struct frame_id, enum bptype);
|
||
|
||
extern breakpoint_up set_momentary_breakpoint_at_pc
|
||
(struct gdbarch *, CORE_ADDR pc, enum bptype type);
|
||
|
||
extern struct breakpoint *clone_momentary_breakpoint (struct breakpoint *bpkt);
|
||
|
||
extern void set_ignore_count (int, int, int);
|
||
|
||
/* Clear the "inserted" flag in all breakpoint locations of INF's program space
|
||
and delete any breakpoints which should go away between runs of the program.
|
||
|
||
Plus other such housekeeping that has to be done for breakpoints
|
||
between runs.
|
||
|
||
Note: this function gets called at the end of a run (by
|
||
generic_mourn_inferior) and when a run begins (by
|
||
init_wait_for_inferior). */
|
||
|
||
extern void breakpoint_init_inferior (inferior *inf, inf_context context);
|
||
|
||
extern void breakpoint_auto_delete (bpstat *);
|
||
|
||
/* Return the chain of command lines to execute when this breakpoint
|
||
is hit. */
|
||
extern struct command_line *breakpoint_commands (struct breakpoint *b);
|
||
|
||
/* Return a string image of DISP. The string is static, and thus should
|
||
NOT be deallocated after use. */
|
||
const char *bpdisp_text (enum bpdisp disp);
|
||
|
||
extern void break_command (const char *, int);
|
||
|
||
extern void watch_command_wrapper (const char *, int, bool);
|
||
extern void awatch_command_wrapper (const char *, int, bool);
|
||
extern void rwatch_command_wrapper (const char *, int, bool);
|
||
extern void tbreak_command (const char *, int);
|
||
|
||
extern const struct breakpoint_ops code_breakpoint_ops;
|
||
|
||
/* Arguments to pass as context to some catch command handlers. */
|
||
#define CATCH_PERMANENT ((void *) (uintptr_t) 0)
|
||
#define CATCH_TEMPORARY ((void *) (uintptr_t) 1)
|
||
|
||
/* Like add_cmd, but add the command to both the "catch" and "tcatch"
|
||
lists, and pass some additional user data to the command
|
||
function. */
|
||
|
||
extern void
|
||
add_catch_command (const char *name, const char *docstring,
|
||
cmd_func_ftype *func,
|
||
completer_ftype *completer,
|
||
void *user_data_catch,
|
||
void *user_data_tcatch);
|
||
|
||
/* Add breakpoint B on the breakpoint list, and notify the user, the
|
||
target and breakpoint_created observers of its existence. If
|
||
INTERNAL is non-zero, the breakpoint number will be allocated from
|
||
the internal breakpoint count. If UPDATE_GLL is non-zero,
|
||
update_global_location_list will be called.
|
||
|
||
Takes ownership of B, and returns a non-owning reference to it. */
|
||
|
||
extern breakpoint *install_breakpoint
|
||
(int internal, std::unique_ptr<breakpoint> &&b, int update_gll);
|
||
|
||
/* Returns the breakpoint ops appropriate for use with with LOCSPEC
|
||
and according to IS_TRACEPOINT. Use this to ensure, for example,
|
||
that you pass the correct ops to create_breakpoint for probe
|
||
location specs. If LOCSPEC is NULL, returns
|
||
code_breakpoint_ops. */
|
||
|
||
extern const struct breakpoint_ops *breakpoint_ops_for_location_spec
|
||
(const location_spec *locspec, bool is_tracepoint);
|
||
|
||
/* Flags that can be passed down to create_breakpoint, etc., to affect
|
||
breakpoint creation in several ways. */
|
||
|
||
enum breakpoint_create_flags
|
||
{
|
||
/* We're adding a breakpoint to our tables that is already
|
||
inserted in the target. */
|
||
CREATE_BREAKPOINT_FLAGS_INSERTED = 1 << 0
|
||
};
|
||
|
||
/* Set a breakpoint. This function is shared between CLI and MI
|
||
functions for setting a breakpoint at LOCSPEC.
|
||
|
||
This function has two major modes of operations, selected by the
|
||
PARSE_EXTRA and WANTED_TYPE parameters.
|
||
|
||
When WANTED_TYPE is not bp_dprintf the following rules apply:
|
||
|
||
If PARSE_EXTRA is zero, LOCSPEC is just the breakpoint's location
|
||
spec, with condition, thread, and extra string specified by the
|
||
COND_STRING, THREAD, and EXTRA_STRING parameters.
|
||
|
||
If PARSE_EXTRA is non-zero, this function will attempt to extract the
|
||
condition, thread, and extra string from EXTRA_STRING, ignoring the
|
||
similarly named parameters.
|
||
|
||
When WANTED_TYPE is bp_dprintf the following rules apply:
|
||
|
||
PARSE_EXTRA must always be zero, LOCSPEC is just the breakpoint's
|
||
location spec, with condition, thread, and extra string (which
|
||
contains the dprintf format and arguments) specified by the
|
||
COND_STRING, THREAD, and EXTRA_STRING parameters.
|
||
|
||
If FORCE_CONDITION is true, the condition (in COND_STRING) is accepted
|
||
even when it is invalid at all of the locations. However, if
|
||
PARSE_EXTRA is non-zero and WANTED_TYPE is not bp_dprintf, the
|
||
FORCE_CONDITION parameter is ignored and the corresponding argument is
|
||
parsed from EXTRA_STRING.
|
||
|
||
The THREAD should be a global thread number, the created breakpoint will
|
||
only apply for that thread. If the breakpoint should apply for all
|
||
threads then pass -1. However, if PARSE_EXTRA is non-zero and
|
||
WANTED_TYPE is not bp_dprintf, then the THREAD parameter is ignored and
|
||
an optional thread number will be parsed from EXTRA_STRING.
|
||
|
||
The INFERIOR should be a global inferior number, the created breakpoint
|
||
will only apply for that inferior. If the breakpoint should apply for
|
||
all inferiors then pass -1. However, if PARSE_EXTRA is non-zero and
|
||
WANTED_TYPE is not bp_dprintf, then the INFERIOR parameter is ignored
|
||
and an optional inferior number will be parsed from EXTRA_STRING.
|
||
|
||
At most one of THREAD and INFERIOR should be set to a value other than
|
||
-1; breakpoints can be thread specific, or inferior specific, but not
|
||
both.
|
||
|
||
If INTERNAL is non-zero, the breakpoint number will be allocated
|
||
from the internal breakpoint count.
|
||
|
||
Returns true if any breakpoint was created; false otherwise. */
|
||
|
||
extern int create_breakpoint (struct gdbarch *gdbarch,
|
||
struct location_spec *locspec,
|
||
const char *cond_string, int thread,
|
||
int inferior,
|
||
const char *extra_string,
|
||
bool force_condition,
|
||
int parse_extra,
|
||
int tempflag, enum bptype wanted_type,
|
||
int ignore_count,
|
||
enum auto_boolean pending_break_support,
|
||
const struct breakpoint_ops *ops,
|
||
int from_tty,
|
||
int enabled,
|
||
int internal, unsigned flags);
|
||
|
||
extern void insert_breakpoints (void);
|
||
|
||
extern int remove_breakpoints (void);
|
||
|
||
/* Remove breakpoints of inferior INF. */
|
||
|
||
extern void remove_breakpoints_inf (inferior *inf);
|
||
|
||
/* This function can be used to update the breakpoint package's state
|
||
after an exec() system call has been executed.
|
||
|
||
This function causes the following:
|
||
|
||
- All eventpoints are marked "not inserted".
|
||
- All eventpoints with a symbolic address are reset such that
|
||
the symbolic address must be reevaluated before the eventpoints
|
||
can be reinserted.
|
||
- The solib breakpoints are explicitly removed from the breakpoint
|
||
list.
|
||
- A step-resume breakpoint, if any, is explicitly removed from the
|
||
breakpoint list.
|
||
- All eventpoints without a symbolic address are removed from the
|
||
breakpoint list. */
|
||
extern void update_breakpoints_after_exec (void);
|
||
|
||
/* This function can be used to physically remove hardware breakpoints
|
||
and watchpoints from the specified traced inferior process, without
|
||
modifying the breakpoint package's state. This can be useful for
|
||
those targets which support following the processes of a fork() or
|
||
vfork() system call, when one of the resulting two processes is to
|
||
be detached and allowed to run free.
|
||
|
||
It is an error to use this function on the process whose id is
|
||
inferior_ptid. */
|
||
extern int detach_breakpoints (ptid_t ptid);
|
||
|
||
/* This function is called when program space PSPACE is about to be
|
||
deleted. It takes care of updating breakpoints to not reference
|
||
this PSPACE anymore. */
|
||
extern void breakpoint_program_space_exit (struct program_space *pspace);
|
||
|
||
extern void set_longjmp_breakpoint (struct thread_info *tp,
|
||
struct frame_id frame);
|
||
extern void delete_longjmp_breakpoint (int thread);
|
||
|
||
/* Mark all longjmp breakpoints from THREAD for later deletion. */
|
||
extern void delete_longjmp_breakpoint_at_next_stop (int thread);
|
||
|
||
extern struct breakpoint *set_longjmp_breakpoint_for_call_dummy (void);
|
||
extern void check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp);
|
||
|
||
extern void enable_overlay_breakpoints (void);
|
||
extern void disable_overlay_breakpoints (void);
|
||
|
||
extern void set_std_terminate_breakpoint (void);
|
||
extern void delete_std_terminate_breakpoint (void);
|
||
|
||
/* These functions respectively disable or reenable all currently
|
||
enabled watchpoints. When disabled, the watchpoints are marked
|
||
call_disabled. When re-enabled, they are marked enabled.
|
||
|
||
The intended client of these functions is call_function_by_hand.
|
||
|
||
The inferior must be stopped, and all breakpoints removed, when
|
||
these functions are used.
|
||
|
||
The need for these functions is that on some targets (e.g., HP-UX),
|
||
gdb is unable to unwind through the dummy frame that is pushed as
|
||
part of the implementation of a call command. Watchpoints can
|
||
cause the inferior to stop in places where this frame is visible,
|
||
and that can cause execution control to become very confused.
|
||
|
||
Note that if a user sets breakpoints in an interactively called
|
||
function, the call_disabled watchpoints will have been re-enabled
|
||
when the first such breakpoint is reached. However, on targets
|
||
that are unable to unwind through the call dummy frame, watches
|
||
of stack-based storage may then be deleted, because gdb will
|
||
believe that their watched storage is out of scope. (Sigh.) */
|
||
extern void disable_watchpoints_before_interactive_call_start (void);
|
||
|
||
extern void enable_watchpoints_after_interactive_call_stop (void);
|
||
|
||
/* These functions disable and re-enable all breakpoints during
|
||
inferior startup. They are intended to be called from solib
|
||
code where necessary. This is needed on platforms where the
|
||
main executable is relocated at some point during startup
|
||
processing, making breakpoint addresses invalid.
|
||
|
||
If additional breakpoints are created after the routine
|
||
disable_breakpoints_before_startup but before the routine
|
||
enable_breakpoints_after_startup was called, they will also
|
||
be marked as disabled. */
|
||
extern void disable_breakpoints_before_startup (void);
|
||
extern void enable_breakpoints_after_startup (void);
|
||
|
||
/* For script interpreters that need to define breakpoint commands
|
||
after they've already read the commands into a struct
|
||
command_line. */
|
||
extern enum command_control_type commands_from_control_command
|
||
(const char *arg, struct command_line *cmd);
|
||
|
||
extern void clear_breakpoint_hit_counts (void);
|
||
|
||
extern struct breakpoint *get_breakpoint (int num);
|
||
|
||
/* The following are for displays, which aren't really breakpoints,
|
||
but here is as good a place as any for them. */
|
||
|
||
extern void disable_current_display (void);
|
||
|
||
extern void do_displays (void);
|
||
|
||
extern void disable_display (int);
|
||
|
||
extern void clear_displays (void);
|
||
|
||
extern void disable_breakpoint (struct breakpoint *);
|
||
|
||
extern void enable_breakpoint (struct breakpoint *);
|
||
|
||
extern void breakpoint_set_commands (struct breakpoint *b,
|
||
counted_command_line &&commands);
|
||
|
||
extern void breakpoint_set_silent (struct breakpoint *b, int silent);
|
||
|
||
/* Set the thread for this breakpoint. If THREAD is -1, make the
|
||
breakpoint work for any thread. Passing a value other than -1 for
|
||
THREAD should only be done if b->task is 0; it is not valid to try and
|
||
set both a thread and task restriction on a breakpoint. */
|
||
|
||
extern void breakpoint_set_thread (struct breakpoint *b, int thread);
|
||
|
||
/* Set the inferior for breakpoint B to INFERIOR. If INFERIOR is -1, make
|
||
the breakpoint work for any inferior. */
|
||
|
||
extern void breakpoint_set_inferior (struct breakpoint *b, int inferior);
|
||
|
||
/* Set the task for this breakpoint. If TASK is -1, make the breakpoint
|
||
work for any task. Passing a value other than -1 for TASK should only
|
||
be done if b->thread is -1; it is not valid to try and set both a thread
|
||
and task restriction on a breakpoint. */
|
||
|
||
extern void breakpoint_set_task (struct breakpoint *b, int task);
|
||
|
||
/* Clear the "inserted" flag in all breakpoints locations in PSPACE. */
|
||
|
||
extern void mark_breakpoints_out (program_space *pspace);
|
||
|
||
extern struct breakpoint *create_jit_event_breakpoint (struct gdbarch *,
|
||
CORE_ADDR);
|
||
|
||
extern struct breakpoint *create_solib_event_breakpoint (struct gdbarch *,
|
||
CORE_ADDR);
|
||
|
||
/* Create an solib event breakpoint at ADDRESS in the current program
|
||
space, and immediately try to insert it. Returns a pointer to the
|
||
breakpoint on success. Deletes the new breakpoint and returns NULL
|
||
if inserting the breakpoint fails. */
|
||
extern struct breakpoint *create_and_insert_solib_event_breakpoint
|
||
(struct gdbarch *gdbarch, CORE_ADDR address);
|
||
|
||
extern struct breakpoint *create_thread_event_breakpoint (struct gdbarch *,
|
||
CORE_ADDR);
|
||
|
||
extern void remove_jit_event_breakpoints (void);
|
||
|
||
extern void remove_solib_event_breakpoints (void);
|
||
|
||
/* Mark solib event breakpoints of the current program space with
|
||
delete at next stop disposition. */
|
||
extern void remove_solib_event_breakpoints_at_next_stop (void);
|
||
|
||
/* Disable any breakpoints that are on code in shared libraries in PSPACE.
|
||
Only apply to enabled breakpoints, disabled ones can just stay disabled. */
|
||
|
||
extern void disable_breakpoints_in_shlibs (program_space *pspace);
|
||
|
||
/* This function returns true if B is a catchpoint. */
|
||
|
||
extern bool is_catchpoint (struct breakpoint *b);
|
||
|
||
/* Shared helper function (MI and CLI) for creating and installing
|
||
a shared object event catchpoint. If IS_LOAD is true then
|
||
the events to be caught are load events, otherwise they are
|
||
unload events. If IS_TEMP is true the catchpoint is a
|
||
temporary one. If ENABLED is true the catchpoint is
|
||
created in an enabled state. */
|
||
|
||
extern void add_solib_catchpoint (const char *arg, bool is_load, bool is_temp,
|
||
bool enabled);
|
||
|
||
/* Create and insert a new software single step breakpoint for the
|
||
current thread. May be called multiple times; each time will add a
|
||
new location to the set of potential addresses the next instruction
|
||
is at. */
|
||
extern void insert_single_step_breakpoint (struct gdbarch *,
|
||
const address_space *,
|
||
CORE_ADDR);
|
||
|
||
/* Insert all software single step breakpoints for the current frame.
|
||
Return true if any software single step breakpoints are inserted,
|
||
otherwise, return false. */
|
||
extern int insert_single_step_breakpoints (struct gdbarch *);
|
||
|
||
/* Check whether any hardware watchpoints have triggered or not,
|
||
according to the target, and record it in each watchpoint's
|
||
'watchpoint_triggered' field. */
|
||
int watchpoints_triggered (const target_waitstatus &);
|
||
|
||
/* Helper for transparent breakpoint hiding for memory read and write
|
||
routines.
|
||
|
||
Update one of READBUF or WRITEBUF with either the shadows
|
||
(READBUF), or the breakpoint instructions (WRITEBUF) of inserted
|
||
breakpoints at the memory range defined by MEMADDR and extending
|
||
for LEN bytes. If writing, then WRITEBUF is a copy of WRITEBUF_ORG
|
||
on entry.*/
|
||
extern void breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
|
||
const gdb_byte *writebuf_org,
|
||
ULONGEST memaddr, LONGEST len);
|
||
|
||
/* Return true if breakpoints should be inserted now. That'll be the
|
||
case if either:
|
||
|
||
- the target has global breakpoints.
|
||
|
||
- "breakpoint always-inserted" is on, and the target has
|
||
execution.
|
||
|
||
- threads are executing.
|
||
*/
|
||
extern int breakpoints_should_be_inserted_now (void);
|
||
|
||
/* Called each time new event from target is processed.
|
||
Retires previously deleted breakpoint locations that
|
||
in our opinion won't ever trigger. */
|
||
extern void breakpoint_retire_moribund (void);
|
||
|
||
/* Set break condition of breakpoint B to EXP.
|
||
If FORCE, define the condition even if it is invalid in
|
||
all of the breakpoint locations. */
|
||
extern void set_breakpoint_condition (struct breakpoint *b, const char *exp,
|
||
int from_tty, bool force);
|
||
|
||
/* Set break condition for the breakpoint with number BPNUM to EXP.
|
||
Raise an error if no breakpoint with the given number is found.
|
||
Also raise an error if the breakpoint already has stop conditions.
|
||
If FORCE, define the condition even if it is invalid in
|
||
all of the breakpoint locations. */
|
||
extern void set_breakpoint_condition (int bpnum, const char *exp,
|
||
int from_tty, bool force);
|
||
|
||
/* Checks if we are catching syscalls or not. */
|
||
extern bool catch_syscall_enabled ();
|
||
|
||
/* Checks if we are catching syscalls with the specific
|
||
syscall_number. Used for "filtering" the catchpoints.
|
||
Returns false if not, true if we are. */
|
||
extern bool catching_syscall_number (int syscall_number);
|
||
|
||
/* Return a tracepoint with the given number if found. */
|
||
extern struct tracepoint *get_tracepoint (int num);
|
||
|
||
extern struct tracepoint *get_tracepoint_by_number_on_target (int num);
|
||
|
||
/* Find a tracepoint by parsing a number in the supplied string. */
|
||
extern struct tracepoint *
|
||
get_tracepoint_by_number (const char **arg,
|
||
number_or_range_parser *parser);
|
||
|
||
/* Return true if B is of tracepoint kind. */
|
||
|
||
extern bool is_tracepoint (const struct breakpoint *b);
|
||
|
||
/* Return a vector of all static tracepoints defined at ADDR. */
|
||
extern std::vector<breakpoint *> static_tracepoints_here (CORE_ADDR addr);
|
||
|
||
/* Create an instance of this to start registering breakpoint numbers
|
||
for a later "commands" command. */
|
||
|
||
class scoped_rbreak_breakpoints
|
||
{
|
||
public:
|
||
|
||
scoped_rbreak_breakpoints ();
|
||
~scoped_rbreak_breakpoints ();
|
||
|
||
DISABLE_COPY_AND_ASSIGN (scoped_rbreak_breakpoints);
|
||
};
|
||
|
||
/* Breakpoint linked list iterator. */
|
||
|
||
using breakpoint_list = intrusive_list<breakpoint>;
|
||
|
||
using breakpoint_iterator = breakpoint_list::iterator;
|
||
|
||
/* Breakpoint linked list range. */
|
||
|
||
using breakpoint_range = iterator_range<breakpoint_iterator>;
|
||
|
||
/* Return a range to iterate over all breakpoints. */
|
||
|
||
breakpoint_range all_breakpoints ();
|
||
|
||
/* Breakpoint linked list range, safe against deletion of the current
|
||
breakpoint while iterating. */
|
||
|
||
using breakpoint_safe_range = basic_safe_range<breakpoint_range>;
|
||
|
||
/* Return a range to iterate over all breakpoints. This range is safe against
|
||
deletion of the current breakpoint while iterating. */
|
||
|
||
breakpoint_safe_range all_breakpoints_safe ();
|
||
|
||
/* Breakpoint filter to only keep tracepoints. */
|
||
|
||
struct tracepoint_filter
|
||
{
|
||
bool operator() (breakpoint &b)
|
||
{ return is_tracepoint (&b); }
|
||
};
|
||
|
||
/* Breakpoint linked list iterator, filtering to only keep tracepoints. */
|
||
|
||
using tracepoint_iterator
|
||
= filtered_iterator<breakpoint_iterator, tracepoint_filter>;
|
||
|
||
/* Breakpoint linked list range, filtering to only keep tracepoints. */
|
||
|
||
using tracepoint_range = iterator_range<tracepoint_iterator>;
|
||
|
||
/* Return a range to iterate over all tracepoints. */
|
||
|
||
tracepoint_range all_tracepoints ();
|
||
|
||
/* Return a range to iterate over all breakpoint locations. */
|
||
|
||
const std::vector<bp_location *> &all_bp_locations ();
|
||
|
||
/* Nonzero if the specified PC cannot be a location where functions
|
||
have been inlined. */
|
||
|
||
extern int pc_at_non_inline_function (const address_space *aspace,
|
||
CORE_ADDR pc,
|
||
const target_waitstatus &ws);
|
||
|
||
extern int user_breakpoint_p (struct breakpoint *);
|
||
|
||
/* Return true if this breakpoint is pending, false if not. */
|
||
extern int pending_breakpoint_p (struct breakpoint *);
|
||
|
||
/* Attempt to determine architecture of location identified by SAL. */
|
||
extern struct gdbarch *get_sal_arch (struct symtab_and_line sal);
|
||
|
||
extern void breakpoint_free_objfile (struct objfile *objfile);
|
||
|
||
extern const char *ep_parse_optional_if_clause (const char **arg);
|
||
|
||
/* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" to
|
||
UIOUT iff debugging multiple threads. */
|
||
extern void maybe_print_thread_hit_breakpoint (struct ui_out *uiout);
|
||
|
||
/* Print the specified breakpoint. */
|
||
extern void print_breakpoint (breakpoint *bp);
|
||
|
||
/* Command element for the 'commands' command. */
|
||
extern cmd_list_element *commands_cmd_element;
|
||
|
||
/* Whether to use the fixed output when printing information about a
|
||
multi-location breakpoint (see PR 9659). */
|
||
|
||
extern bool fix_multi_location_breakpoint_output_globally;
|
||
|
||
/* Whether to use the fixed output when printing information about
|
||
commands attached to a breakpoint. */
|
||
|
||
extern bool fix_breakpoint_script_output_globally;
|
||
|
||
/* Deal with "catch catch", "catch throw", and "catch rethrow" commands and
|
||
the MI equivalents. Sets up to catch events of type EX_EVENT. When
|
||
TEMPFLAG is true only the next matching event is caught after which the
|
||
catch-point is deleted. If REGEX is not NULL then only exceptions whose
|
||
type name matches REGEX will trigger the event. */
|
||
|
||
extern void catch_exception_event (enum exception_event_kind ex_event,
|
||
const char *regex, bool tempflag,
|
||
int from_tty);
|
||
|
||
/* A helper function that prints a shared library stopped event.
|
||
IS_CATCHPOINT is true if the event is due to a "catch load"
|
||
catchpoint, false otherwise. */
|
||
|
||
extern void print_solib_event (bool is_catchpoint);
|
||
|
||
/* Print a message describing any user-breakpoints set at PC. This
|
||
concerns with logical breakpoints, so we match program spaces, not
|
||
address spaces. */
|
||
|
||
extern void describe_other_breakpoints (struct gdbarch *,
|
||
struct program_space *, CORE_ADDR,
|
||
struct obj_section *, int);
|
||
|
||
/* Enable or disable a breakpoint location LOC. ENABLE
|
||
specifies whether to enable or disable. */
|
||
|
||
extern void enable_disable_bp_location (bp_location *loc, bool enable);
|
||
|
||
|
||
/* Notify interpreters and observers that breakpoint B was modified. */
|
||
|
||
extern void notify_breakpoint_modified (breakpoint *b);
|
||
|
||
#endif /* !defined (BREAKPOINT_H) */
|