#include "thread-fsm.h"
#include "tid-parse.h"
#include "cli/cli-style.h"
+#include "cli/cli-decode.h"
/* readline include files */
#include "readline/tilde.h"
static bool is_masked_watchpoint (const struct breakpoint *b);
-static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address);
-
/* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero
otherwise. */
B ? (TMP=B->next, 1): 0; \
B = TMP)
-/* Iterates through locations with address ADDRESS for the currently selected
- program space. BP_LOCP_TMP points to each object. BP_LOCP_START points
- to where the loop should start from.
- If BP_LOCP_START is a NULL pointer, the macro automatically seeks the
- appropriate location to start with. */
-
-#define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \
- for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \
- BP_LOCP_TMP = BP_LOCP_START; \
- BP_LOCP_START \
- && (BP_LOCP_TMP < bp_locations.data () + bp_locations.size () \
- && (*BP_LOCP_TMP)->address == ADDRESS); \
- BP_LOCP_TMP++)
-
/* Chains of all breakpoints defined. */
static struct breakpoint *breakpoint_chain;
-/* Breakpoint linked list range. */
-
-using breakpoint_range = next_adapter<breakpoint, breakpoint_iterator>;
-
-/* Return a range to iterate over all breakpoints. */
+/* See breakpoint.h. */
-static breakpoint_range
+breakpoint_range
all_breakpoints ()
{
return breakpoint_range (breakpoint_chain);
}
-/* 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. */
+/* See breakpoint.h. */
-static breakpoint_safe_range
+breakpoint_safe_range
all_breakpoints_safe ()
{
return breakpoint_safe_range (all_breakpoints ());
static std::vector<bp_location *> bp_locations;
-static const std::vector<bp_location *> &
+/* See breakpoint.h. */
+
+const std::vector<bp_location *> &
all_bp_locations ()
{
return bp_locations;
}
+/* Range to iterate over breakpoint locations at a given address. */
+
+struct bp_locations_at_addr_range
+{
+ using iterator = std::vector<bp_location *>::iterator;
+
+ bp_locations_at_addr_range (CORE_ADDR addr)
+ {
+ struct compare
+ {
+ bool operator() (const bp_location *loc, CORE_ADDR addr_) const
+ { return loc->address < addr_; }
+
+ bool operator() (CORE_ADDR addr_, const bp_location *loc) const
+ { return addr_ < loc->address; }
+ };
+
+ auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (),
+ addr, compare ());
+
+ m_begin = it_pair.first;
+ m_end = it_pair.second;
+ }
+
+ iterator begin () const
+ { return m_begin; }
+
+ iterator end () const
+ { return m_end; }
+
+private:
+ iterator m_begin;
+ iterator m_end;
+};
+
+/* Return a range to iterate over all breakpoint locations exactly at address
+ ADDR.
+
+ If it's needed to iterate multiple times on the same range, it's possible
+ to save the range in a local variable and use it multiple times:
+
+ auto range = all_bp_locations_at_addr (addr);
+
+ for (bp_location *loc : range)
+ // use loc
+
+ for (bp_location *loc : range)
+ // use loc
+
+ This saves a bit of time, as it avoids re-doing the binary searches to find
+ the range's boundaries. Just remember not to change the bp_locations vector
+ in the mean time, as it could make the range's iterators stale. */
+
+static bp_locations_at_addr_range
+all_bp_locations_at_addr (CORE_ADDR addr)
+{
+ return bp_locations_at_addr_range (addr);
+}
+
/* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and
ADDRESS for the current elements of BP_LOCATIONS which get a valid
result from bp_location_has_shadow. You can use it for roughly
target. */
for (bp_location *loc : all_bp_locations ())
mark_breakpoint_location_modified (loc);
- }
+ }
else
{
/* Manually mark non-duplicate locations to synch conditions
value);
}
-/* A comparison function for bp_location AP and BP that is used by
- bsearch. This comparison function only cares about addresses, unlike
- the more general bp_location_is_less_than function. */
-
-static int
-bp_locations_compare_addrs (const void *ap, const void *bp)
-{
- const struct bp_location *a = *(const struct bp_location **) ap;
- const struct bp_location *b = *(const struct bp_location **) bp;
-
- if (a->address == b->address)
- return 0;
- else
- return ((a->address > b->address) - (a->address < b->address));
-}
-
-/* Helper function to skip all bp_locations with addresses
- less than ADDRESS. It returns the first bp_location that
- is greater than or equal to ADDRESS. If none is found, just
- return NULL. */
-
-static struct bp_location **
-get_first_locp_gte_addr (CORE_ADDR address)
-{
- struct bp_location dummy_loc;
- struct bp_location *dummy_locp = &dummy_loc;
- struct bp_location **locp_found = NULL;
-
- /* Initialize the dummy location's address field. */
- dummy_loc.address = address;
-
- /* Find a close match to the first location at ADDRESS. */
- locp_found = ((struct bp_location **)
- bsearch (&dummy_locp, bp_locations.data (), bp_locations.size (),
- sizeof (struct bp_location **),
- bp_locations_compare_addrs));
-
- /* Nothing was found, nothing left to do. */
- if (locp_found == NULL)
- return NULL;
-
- /* We may have found a location that is at ADDRESS but is not the first in the
- location's list. Go backwards (if possible) and locate the first one. */
- while ((locp_found - 1) >= bp_locations.data ()
- && (*(locp_found - 1))->address == address)
- locp_found--;
-
- return locp_found;
-}
-
/* Parse COND_STRING in the context of LOC and set as the condition
expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is
the number of LOC within its owner. In case of parsing error, mark
/* Now do full processing of the found relevant range of elements. */
for (bc = bc_l; bc < bp_locations.size (); bc++)
- {
- struct bp_location *bl = bp_locations[bc];
+ {
+ struct bp_location *bl = bp_locations[bc];
- /* bp_location array has BL->OWNER always non-NULL. */
- if (bl->owner->type == bp_none)
- warning (_("reading through apparently deleted breakpoint #%d?"),
- bl->owner->number);
+ /* bp_location array has BL->OWNER always non-NULL. */
+ if (bl->owner->type == bp_none)
+ warning (_("reading through apparently deleted breakpoint #%d?"),
+ bl->owner->number);
- /* Performance optimization: any further element can no longer affect BUF
- content. */
+ /* Performance optimization: any further element can no longer affect BUF
+ content. */
- if (bl->address >= bp_locations_placed_address_before_address_max
- && memaddr + len <= (bl->address
- - bp_locations_placed_address_before_address_max))
- break;
+ if (bl->address >= bp_locations_placed_address_before_address_max
+ && (memaddr + len
+ <= (bl->address
+ - bp_locations_placed_address_before_address_max)))
+ break;
- if (!bp_location_has_shadow (bl))
- continue;
+ if (!bp_location_has_shadow (bl))
+ continue;
- one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org,
- memaddr, len, &bl->target_info, bl->gdbarch);
- }
+ one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org,
+ memaddr, len, &bl->target_info, bl->gdbarch);
+ }
}
/* See breakpoint.h. */
static void
build_target_condition_list (struct bp_location *bl)
{
- struct bp_location **locp = NULL, **loc2p;
int null_condition_or_parse_error = 0;
int modified = bl->needs_update;
- struct bp_location *loc;
/* Release conditions left over from a previous insert. */
bl->target_info.conditions.clear ();
|| !target_supports_evaluation_of_breakpoint_conditions ())
return;
+ auto loc_range = all_bp_locations_at_addr (bl->address);
+
/* Do a first pass to check for locations with no assigned
conditions or conditions that fail to parse to a valid agent
expression bytecode. If any of these happen, then it's no use to
even if the locations aren't considered duplicates (e.g.,
software breakpoint and hardware breakpoint at the same
address). */
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
+ for (bp_location *loc : loc_range)
{
- loc = (*loc2p);
if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
{
if (modified)
being evaluated by GDB or the remote stub. */
if (null_condition_or_parse_error)
{
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
+ for (bp_location *loc : loc_range)
{
- loc = (*loc2p);
if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
{
/* Only go as far as the first NULL bytecode is
considered duplicates, but we still marge all the conditions
anyway, as it's simpler, and doesn't really make a practical
difference. */
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
- {
- loc = (*loc2p);
- if (loc->cond
- && is_breakpoint (loc->owner)
- && loc->pspace->num == bl->pspace->num
- && loc->owner->enable_state == bp_enabled
- && loc->enabled
- && !loc->disabled_by_cond)
- {
- /* Add the condition to the vector. This will be used later
- to send the conditions to the target. */
- bl->target_info.conditions.push_back (loc->cond_bytecode.get ());
- }
- }
+ for (bp_location *loc : loc_range)
+ if (loc->cond
+ && is_breakpoint (loc->owner)
+ && loc->pspace->num == bl->pspace->num
+ && loc->owner->enable_state == bp_enabled
+ && loc->enabled
+ && !loc->disabled_by_cond)
+ {
+ /* Add the condition to the vector. This will be used later
+ to send the conditions to the target. */
+ bl->target_info.conditions.push_back (loc->cond_bytecode.get ());
+ }
return;
}
static void
build_target_command_list (struct bp_location *bl)
{
- struct bp_location **locp = NULL, **loc2p;
int null_command_or_parse_error = 0;
int modified = bl->needs_update;
- struct bp_location *loc;
/* Clear commands left over from a previous insert. */
bl->target_info.tcommands.clear ();
if (dprintf_style != dprintf_style_agent)
return;
+ auto loc_range = all_bp_locations_at_addr (bl->address);
+
/* For now, if we have any location at the same address that isn't a
dprintf, don't install the target-side commands, as that would
make the breakpoint not be reported to the core, and we'd lose
control. */
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
- {
- loc = (*loc2p);
- if (is_breakpoint (loc->owner)
- && loc->pspace->num == bl->pspace->num
- && loc->owner->type != bp_dprintf)
- return;
- }
+ for (bp_location *loc : loc_range)
+ if (is_breakpoint (loc->owner)
+ && loc->pspace->num == bl->pspace->num
+ && loc->owner->type != bp_dprintf)
+ return;
/* Do a first pass to check for locations with no assigned
conditions or conditions that fail to parse to a valid agent expression
bytecode. If any of these happen, then it's no use to send conditions
to the target since this location will always trigger and generate a
response back to GDB. */
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
+ for (bp_location *loc : loc_range)
{
- loc = (*loc2p);
if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
{
if (modified)
and so clean up. */
if (null_command_or_parse_error)
{
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
- {
- loc = (*loc2p);
- if (is_breakpoint (loc->owner)
- && loc->pspace->num == bl->pspace->num)
- {
- /* Only go as far as the first NULL bytecode is
- located. */
- if (loc->cmd_bytecode == NULL)
- return;
+ for (bp_location *loc : loc_range)
+ if (is_breakpoint (loc->owner)
+ && loc->pspace->num == bl->pspace->num)
+ {
+ /* Only go as far as the first NULL bytecode is
+ located. */
+ if (loc->cmd_bytecode == NULL)
+ return;
- loc->cmd_bytecode.reset ();
- }
- }
+ loc->cmd_bytecode.reset ();
+ }
}
/* No NULL commands or failed bytecode generation. Build a command
could end up running the commands twice. For the moment, we only
support targets-side commands with dprintf, but it doesn't hurt
to be pedantically correct in case that changes. */
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
- {
- loc = (*loc2p);
- if (breakpoint_locations_match (bl, loc)
- && loc->owner->extra_string
- && is_breakpoint (loc->owner)
- && loc->pspace->num == bl->pspace->num
- && loc->owner->enable_state == bp_enabled
- && loc->enabled
- && !loc->disabled_by_cond)
- {
- /* Add the command to the vector. This will be used later
- to send the commands to the target. */
- bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ());
- }
- }
+ for (bp_location *loc : loc_range)
+ if (breakpoint_locations_match (bl, loc)
+ && loc->owner->extra_string
+ && is_breakpoint (loc->owner)
+ && loc->pspace->num == bl->pspace->num
+ && loc->owner->enable_state == bp_enabled
+ && loc->enabled
+ && !loc->disabled_by_cond)
+ {
+ /* Add the command to the vector. This will be used later
+ to send the commands to the target. */
+ bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ());
+ }
bl->target_info.persist = 0;
/* Maybe flag this location as persistent. */
{
/* Can't set the breakpoint. */
+ /* If the target has closed then it will have deleted any
+ breakpoints inserted within the target inferior, as a result
+ any further attempts to interact with the breakpoint objects
+ is not possible. Just rethrow the error. */
+ if (bp_excpt.error == TARGET_CLOSE_ERROR)
+ throw bp_excpt;
+ gdb_assert (bl->owner != nullptr);
+
/* In some cases, we might not be able to insert a
breakpoint in a shared library that has already been
removed, but we have not yet processed the shlib unload
update_global_location_list (UGLL_INSERT);
}
-/* Invoke CALLBACK for each of bp_location. */
-
-void
-iterate_over_bp_locations (gdb::function_view<void (bp_location *)> callback)
-{
- for (bp_location *loc : all_bp_locations ())
- callback (loc);
-}
-
/* This is used when we need to synch breakpoint conditions between GDB and the
target. It is the case with deleting and disabling of breakpoints when using
always-inserted mode. */
int val = 0;
for (bp_location *bl : all_bp_locations ())
- {
if (bl->inserted && !is_tracepoint (bl->owner))
val |= remove_breakpoint (bl);
- }
+
return val;
}
int val;
for (bp_location *bl : all_bp_locations ())
- {
- if (bl->pspace != inf->pspace)
- continue;
+ {
+ if (bl->pspace != inf->pspace)
+ continue;
- if (bl->inserted && !bl->target_info.persist)
- {
- val = remove_breakpoint (bl);
- if (val != 0)
- return;
- }
- }
+ if (bl->inserted && !bl->target_info.persist)
+ {
+ val = remove_breakpoint (bl);
+ if (val != 0)
+ return;
+ }
+ }
}
static int internal_breakpoint_number = -1;
gdb_assert (!bploc->inserted);
for (breakpoint *b : all_breakpoints_safe ())
- {
- if (b->pspace != current_program_space)
- continue;
-
- /* Solib breakpoints must be explicitly reset after an exec(). */
- if (b->type == bp_shlib_event)
- {
- delete_breakpoint (b);
+ {
+ if (b->pspace != current_program_space)
continue;
- }
- /* JIT breakpoints must be explicitly reset after an exec(). */
- if (b->type == bp_jit_event)
- {
- delete_breakpoint (b);
- continue;
- }
+ /* Solib breakpoints must be explicitly reset after an exec(). */
+ if (b->type == bp_shlib_event)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- /* Thread event breakpoints must be set anew after an exec(),
- as must overlay event and longjmp master breakpoints. */
- if (b->type == bp_thread_event || b->type == bp_overlay_event
- || b->type == bp_longjmp_master || b->type == bp_std_terminate_master
- || b->type == bp_exception_master)
- {
- delete_breakpoint (b);
- continue;
- }
+ /* JIT breakpoints must be explicitly reset after an exec(). */
+ if (b->type == bp_jit_event)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- /* Step-resume breakpoints are meaningless after an exec(). */
- if (b->type == bp_step_resume || b->type == bp_hp_step_resume)
- {
- delete_breakpoint (b);
- continue;
- }
+ /* Thread event breakpoints must be set anew after an exec(),
+ as must overlay event and longjmp master breakpoints. */
+ if (b->type == bp_thread_event || b->type == bp_overlay_event
+ || b->type == bp_longjmp_master || b->type == bp_std_terminate_master
+ || b->type == bp_exception_master)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- /* Just like single-step breakpoints. */
- if (b->type == bp_single_step)
- {
- delete_breakpoint (b);
- continue;
- }
+ /* Step-resume breakpoints are meaningless after an exec(). */
+ if (b->type == bp_step_resume || b->type == bp_hp_step_resume)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- /* Longjmp and longjmp-resume breakpoints are also meaningless
- after an exec. */
- if (b->type == bp_longjmp || b->type == bp_longjmp_resume
- || b->type == bp_longjmp_call_dummy
- || b->type == bp_exception || b->type == bp_exception_resume)
- {
- delete_breakpoint (b);
- continue;
- }
+ /* Just like single-step breakpoints. */
+ if (b->type == bp_single_step)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- if (b->type == bp_catchpoint)
- {
- /* For now, none of the bp_catchpoint breakpoints need to
- do anything at this point. In the future, if some of
- the catchpoints need to something, we will need to add
- a new method, and call this method from here. */
- continue;
- }
+ /* Longjmp and longjmp-resume breakpoints are also meaningless
+ after an exec. */
+ if (b->type == bp_longjmp || b->type == bp_longjmp_resume
+ || b->type == bp_longjmp_call_dummy
+ || b->type == bp_exception || b->type == bp_exception_resume)
+ {
+ delete_breakpoint (b);
+ continue;
+ }
- /* bp_finish is a special case. The only way we ought to be able
- to see one of these when an exec() has happened, is if the user
- caught a vfork, and then said "finish". Ordinarily a finish just
- carries them to the call-site of the current callee, by setting
- a temporary bp there and resuming. But in this case, the finish
- will carry them entirely through the vfork & exec.
-
- We don't want to allow a bp_finish to remain inserted now. But
- we can't safely delete it, 'cause finish_command has a handle to
- the bp on a bpstat, and will later want to delete it. There's a
- chance (and I've seen it happen) that if we delete the bp_finish
- here, that its storage will get reused by the time finish_command
- gets 'round to deleting the "use to be a bp_finish" breakpoint.
- We really must allow finish_command to delete a bp_finish.
-
- In the absence of a general solution for the "how do we know
- it's safe to delete something others may have handles to?"
- problem, what we'll do here is just uninsert the bp_finish, and
- let finish_command delete it.
-
- (We know the bp_finish is "doomed" in the sense that it's
- momentary, and will be deleted as soon as finish_command sees
- the inferior stopped. So it doesn't matter that the bp's
- address is probably bogus in the new a.out, unlike e.g., the
- solib breakpoints.) */
-
- if (b->type == bp_finish)
- {
- continue;
- }
+ if (b->type == bp_catchpoint)
+ {
+ /* For now, none of the bp_catchpoint breakpoints need to
+ do anything at this point. In the future, if some of
+ the catchpoints need to something, we will need to add
+ a new method, and call this method from here. */
+ continue;
+ }
- /* Without a symbolic address, we have little hope of the
- pre-exec() address meaning the same thing in the post-exec()
- a.out. */
- if (breakpoint_event_location_empty_p (b))
- {
- delete_breakpoint (b);
- continue;
- }
- }
+ /* bp_finish is a special case. The only way we ought to be able
+ to see one of these when an exec() has happened, is if the user
+ caught a vfork, and then said "finish". Ordinarily a finish just
+ carries them to the call-site of the current callee, by setting
+ a temporary bp there and resuming. But in this case, the finish
+ will carry them entirely through the vfork & exec.
+
+ We don't want to allow a bp_finish to remain inserted now. But
+ we can't safely delete it, 'cause finish_command has a handle to
+ the bp on a bpstat, and will later want to delete it. There's a
+ chance (and I've seen it happen) that if we delete the bp_finish
+ here, that its storage will get reused by the time finish_command
+ gets 'round to deleting the "use to be a bp_finish" breakpoint.
+ We really must allow finish_command to delete a bp_finish.
+
+ In the absence of a general solution for the "how do we know
+ it's safe to delete something others may have handles to?"
+ problem, what we'll do here is just uninsert the bp_finish, and
+ let finish_command delete it.
+
+ (We know the bp_finish is "doomed" in the sense that it's
+ momentary, and will be deleted as soon as finish_command sees
+ the inferior stopped. So it doesn't matter that the bp's
+ address is probably bogus in the new a.out, unlike e.g., the
+ solib breakpoints.) */
+
+ if (b->type == bp_finish)
+ {
+ continue;
+ }
+
+ /* Without a symbolic address, we have little hope of the
+ pre-exec() address meaning the same thing in the post-exec()
+ a.out. */
+ if (breakpoint_event_location_empty_p (b))
+ {
+ delete_breakpoint (b);
+ continue;
+ }
+ }
}
int
/* Set inferior_ptid; remove_breakpoint_1 uses this global. */
inferior_ptid = ptid;
for (bp_location *bl : all_bp_locations ())
- {
- if (bl->pspace != inf->pspace)
- continue;
-
- /* This function must physically remove breakpoints locations
- from the specified ptid, without modifying the breakpoint
- package's state. Locations of type bp_loc_other are only
- maintained at GDB side. So, there is no need to remove
- these bp_loc_other locations. Moreover, removing these
- would modify the breakpoint package's state. */
- if (bl->loc_type == bp_loc_other)
- continue;
-
- if (bl->inserted)
- val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT);
- }
+ {
+ if (bl->pspace != inf->pspace)
+ continue;
+
+ /* This function must physically remove breakpoints locations
+ from the specified ptid, without modifying the breakpoint
+ package's state. Locations of type bp_loc_other are only
+ maintained at GDB side. So, there is no need to remove
+ these bp_loc_other locations. Moreover, removing these
+ would modify the breakpoint package's state. */
+ if (bl->loc_type == bp_loc_other)
+ continue;
+
+ if (bl->inserted)
+ val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT);
+ }
return val;
}
mark_breakpoints_out ();
for (breakpoint *b : all_breakpoints_safe ())
- {
- if (b->loc && b->loc->pspace != pspace)
- continue;
+ {
+ if (b->loc && b->loc->pspace != pspace)
+ continue;
- switch (b->type)
- {
- case bp_call_dummy:
- case bp_longjmp_call_dummy:
+ switch (b->type)
+ {
+ case bp_call_dummy:
+ case bp_longjmp_call_dummy:
- /* If the call dummy breakpoint is at the entry point it will
- cause problems when the inferior is rerun, so we better get
- rid of it. */
+ /* If the call dummy breakpoint is at the entry point it will
+ cause problems when the inferior is rerun, so we better get
+ rid of it. */
- case bp_watchpoint_scope:
+ case bp_watchpoint_scope:
- /* Also get rid of scope breakpoints. */
+ /* Also get rid of scope breakpoints. */
- case bp_shlib_event:
+ case bp_shlib_event:
- /* Also remove solib event breakpoints. Their addresses may
- have changed since the last time we ran the program.
- Actually we may now be debugging against different target;
- and so the solib backend that installed this breakpoint may
- not be used in by the target. E.g.,
+ /* Also remove solib event breakpoints. Their addresses may
+ have changed since the last time we ran the program.
+ Actually we may now be debugging against different target;
+ and so the solib backend that installed this breakpoint may
+ not be used in by the target. E.g.,
- (gdb) file prog-linux
- (gdb) run # native linux target
- ...
- (gdb) kill
- (gdb) file prog-win.exe
- (gdb) tar rem :9999 # remote Windows gdbserver.
- */
+ (gdb) file prog-linux
+ (gdb) run # native linux target
+ ...
+ (gdb) kill
+ (gdb) file prog-win.exe
+ (gdb) tar rem :9999 # remote Windows gdbserver.
+ */
- case bp_step_resume:
+ case bp_step_resume:
- /* Also remove step-resume breakpoints. */
+ /* Also remove step-resume breakpoints. */
- case bp_single_step:
+ case bp_single_step:
- /* Also remove single-step breakpoints. */
+ /* Also remove single-step breakpoints. */
- delete_breakpoint (b);
- break;
+ delete_breakpoint (b);
+ break;
- case bp_watchpoint:
- case bp_hardware_watchpoint:
- case bp_read_watchpoint:
- case bp_access_watchpoint:
- {
- struct watchpoint *w = (struct watchpoint *) b;
+ case bp_watchpoint:
+ case bp_hardware_watchpoint:
+ case bp_read_watchpoint:
+ case bp_access_watchpoint:
+ {
+ struct watchpoint *w = (struct watchpoint *) b;
- /* Likewise for watchpoints on local expressions. */
- if (w->exp_valid_block != NULL)
- delete_breakpoint (b);
- else
- {
- /* Get rid of existing locations, which are no longer
- valid. New ones will be created in
- update_watchpoint, when the inferior is restarted.
- The next update_global_location_list call will
- garbage collect them. */
- b->loc = NULL;
-
- if (context == inf_starting)
- {
- /* Reset val field to force reread of starting value in
- insert_breakpoints. */
- w->val.reset (nullptr);
- w->val_valid = false;
- }
- }
+ /* Likewise for watchpoints on local expressions. */
+ if (w->exp_valid_block != NULL)
+ delete_breakpoint (b);
+ else
+ {
+ /* Get rid of existing locations, which are no longer
+ valid. New ones will be created in
+ update_watchpoint, when the inferior is restarted.
+ The next update_global_location_list call will
+ garbage collect them. */
+ b->loc = NULL;
+
+ if (context == inf_starting)
+ {
+ /* Reset val field to force reread of starting value in
+ insert_breakpoints. */
+ w->val.reset (nullptr);
+ w->val_valid = false;
+ }
+ }
+ }
+ break;
+ default:
+ break;
}
- break;
- default:
- break;
- }
- }
+ }
/* Get rid of the moribund locations. */
for (bp_location *bl : moribund_locations)
int
breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc)
{
- struct bp_location **blp, **blp_tmp = NULL;
-
- ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
+ for (bp_location *bl : all_bp_locations_at_addr (pc))
{
- struct bp_location *bl = *blp;
-
if (bl->loc_type != bp_loc_software_breakpoint
&& bl->loc_type != bp_loc_hardware_breakpoint)
continue;
software_breakpoint_inserted_here_p (const address_space *aspace,
CORE_ADDR pc)
{
- struct bp_location **blp, **blp_tmp = NULL;
-
- ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
+ for (bp_location *bl : all_bp_locations_at_addr (pc))
{
- struct bp_location *bl = *blp;
-
if (bl->loc_type != bp_loc_software_breakpoint)
continue;
hardware_breakpoint_inserted_here_p (const address_space *aspace,
CORE_ADDR pc)
{
- struct bp_location **blp, **blp_tmp = NULL;
-
- ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
+ for (bp_location *bl : all_bp_locations_at_addr (pc))
{
- struct bp_location *bl = *blp;
-
if (bl->loc_type != bp_loc_hardware_breakpoint)
continue;
TP. Remove those which can no longer be found in the current frame
stack.
- You should call this function only at places where it is safe to currently
- unwind the whole stack. Failed stack unwind would discard live dummy
- frames. */
+ If the unwind fails then there is not sufficient information to discard
+ dummy frames. In this case, elide the clean up and the dummy frames will
+ be cleaned up next time this function is called from a location where
+ unwinding is possible. */
void
check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp)
{
struct breakpoint *dummy_b = b->related_breakpoint;
+ /* Find the bp_call_dummy breakpoint in the list of breakpoints
+ chained off b->related_breakpoint. */
while (dummy_b != b && dummy_b->type != bp_call_dummy)
dummy_b = dummy_b->related_breakpoint;
+
+ /* If there was no bp_call_dummy breakpoint then there's nothing
+ more to do. Or, if the dummy frame associated with the
+ bp_call_dummy is still on the stack then we need to leave this
+ bp_call_dummy in place. */
if (dummy_b->type != bp_call_dummy
|| frame_find_by_id (dummy_b->frame_id) != NULL)
continue;
-
+
+ /* We didn't find the dummy frame on the stack, this could be
+ because we have longjmp'd to a stack frame that is previous to
+ the dummy frame, or it could be because the stack unwind is
+ broken at some point between the longjmp frame and the dummy
+ frame.
+
+ Next we figure out why the stack unwind stopped. If it looks
+ like the unwind is complete then we assume the dummy frame has
+ been jumped over, however, if the unwind stopped for an
+ unexpected reason then we assume the stack unwind is currently
+ broken, and that we will (eventually) return to the dummy
+ frame.
+
+ It might be tempting to consider using frame_id_inner here, but
+ that is not safe. There is no guarantee that the stack frames
+ we are looking at here are even on the same stack as the
+ original dummy frame, hence frame_id_inner can't be used. See
+ the comments on frame_id_inner for more details. */
+ bool unwind_finished_unexpectedly = false;
+ for (struct frame_info *fi = get_current_frame (); fi != nullptr; )
+ {
+ struct frame_info *prev = get_prev_frame (fi);
+ if (prev == nullptr)
+ {
+ /* FI is the last stack frame. Why did this frame not
+ unwind further? */
+ auto stop_reason = get_frame_unwind_stop_reason (fi);
+ if (stop_reason != UNWIND_NO_REASON
+ && stop_reason != UNWIND_OUTERMOST)
+ unwind_finished_unexpectedly = true;
+ }
+ fi = prev;
+ }
+ if (unwind_finished_unexpectedly)
+ continue;
+
dummy_frame_discard (dummy_b->frame_id, tp);
while (b->related_breakpoint != b)
{
for (breakpoint *b : all_breakpoints ())
if (b->type == bp_overlay_event)
- {
- b->enable_state = bp_enabled;
- update_global_location_list (UGLL_MAY_INSERT);
- overlay_events_enabled = 1;
- }
+ {
+ b->enable_state = bp_enabled;
+ update_global_location_list (UGLL_MAY_INSERT);
+ overlay_events_enabled = 1;
+ }
}
void
{
for (breakpoint *b : all_breakpoints ())
if (b->type == bp_overlay_event)
- {
- b->enable_state = bp_disabled;
- update_global_location_list (UGLL_DONT_INSERT);
- overlay_events_enabled = 0;
- }
+ {
+ b->enable_state = bp_disabled;
+ update_global_location_list (UGLL_DONT_INSERT);
+ overlay_events_enabled = 0;
+ }
}
/* Set an active std::terminate breakpoint for each std::terminate
disable_breakpoints_in_shlibs (void)
{
for (bp_location *loc : all_bp_locations ())
- {
- /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
- struct breakpoint *b = loc->owner;
-
- /* We apply the check to all breakpoints, including disabled for
- those with loc->duplicate set. This is so that when breakpoint
- becomes enabled, or the duplicate is removed, gdb will try to
- insert all breakpoints. If we don't set shlib_disabled here,
- we'll try to insert those breakpoints and fail. */
- if (((b->type == bp_breakpoint)
- || (b->type == bp_jit_event)
- || (b->type == bp_hardware_breakpoint)
- || (is_tracepoint (b)))
- && loc->pspace == current_program_space
- && !loc->shlib_disabled
- && solib_name_from_address (loc->pspace, loc->address)
- )
- {
- loc->shlib_disabled = 1;
- }
- }
+ {
+ /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
+ struct breakpoint *b = loc->owner;
+
+ /* We apply the check to all breakpoints, including disabled for
+ those with loc->duplicate set. This is so that when breakpoint
+ becomes enabled, or the duplicate is removed, gdb will try to
+ insert all breakpoints. If we don't set shlib_disabled here,
+ we'll try to insert those breakpoints and fail. */
+ if (((b->type == bp_breakpoint)
+ || (b->type == bp_jit_event)
+ || (b->type == bp_hardware_breakpoint)
+ || (is_tracepoint (b)))
+ && loc->pspace == current_program_space
+ && !loc->shlib_disabled
+ && solib_name_from_address (loc->pspace, loc->address)
+ )
+ {
+ loc->shlib_disabled = 1;
+ }
+ }
}
/* Disable any breakpoints and tracepoints that are in SOLIB upon
int disabled_shlib_breaks = 0;
for (bp_location *loc : all_bp_locations ())
- {
- /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
- struct breakpoint *b = loc->owner;
-
- if (solib->pspace == loc->pspace
- && !loc->shlib_disabled
- && (((b->type == bp_breakpoint
- || b->type == bp_jit_event
- || b->type == bp_hardware_breakpoint)
- && (loc->loc_type == bp_loc_hardware_breakpoint
- || loc->loc_type == bp_loc_software_breakpoint))
- || is_tracepoint (b))
- && solib_contains_address_p (solib, loc->address))
- {
- loc->shlib_disabled = 1;
- /* At this point, we cannot rely on remove_breakpoint
- succeeding so we must mark the breakpoint as not inserted
- to prevent future errors occurring in remove_breakpoints. */
- loc->inserted = 0;
-
- /* This may cause duplicate notifications for the same breakpoint. */
- gdb::observers::breakpoint_modified.notify (b);
-
- if (!disabled_shlib_breaks)
- {
- target_terminal::ours_for_output ();
- warning (_("Temporarily disabling breakpoints "
- "for unloaded shared library \"%s\""),
- solib->so_name);
- }
- disabled_shlib_breaks = 1;
- }
- }
+ {
+ /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */
+ struct breakpoint *b = loc->owner;
+
+ if (solib->pspace == loc->pspace
+ && !loc->shlib_disabled
+ && (((b->type == bp_breakpoint
+ || b->type == bp_jit_event
+ || b->type == bp_hardware_breakpoint)
+ && (loc->loc_type == bp_loc_hardware_breakpoint
+ || loc->loc_type == bp_loc_software_breakpoint))
+ || is_tracepoint (b))
+ && solib_contains_address_p (solib, loc->address))
+ {
+ loc->shlib_disabled = 1;
+ /* At this point, we cannot rely on remove_breakpoint
+ succeeding so we must mark the breakpoint as not inserted
+ to prevent future errors occurring in remove_breakpoints. */
+ loc->inserted = 0;
+
+ /* This may cause duplicate notifications for the same breakpoint. */
+ gdb::observers::breakpoint_modified.notify (b);
+
+ if (!disabled_shlib_breaks)
+ {
+ target_terminal::ours_for_output ();
+ warning (_("Temporarily disabling breakpoints "
+ "for unloaded shared library \"%s\""),
+ solib->so_name);
+ }
+ disabled_shlib_breaks = 1;
+ }
+ }
}
/* Disable any breakpoints and tracepoints in OBJFILE upon
return 1;
for (breakpoint *other : all_breakpoints ())
- {
- if (other == bl->owner)
- continue;
+ {
+ if (other == bl->owner)
+ continue;
- if (other->type != bp_shlib_event)
- continue;
+ if (other->type != bp_shlib_event)
+ continue;
- if (self->pspace != NULL && other->pspace != self->pspace)
- continue;
+ if (self->pspace != NULL && other->pspace != self->pspace)
+ continue;
- for (bp_location *other_bl : other->locations ())
- {
- if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws))
- return 1;
- }
- }
+ for (bp_location *other_bl : other->locations ())
+ {
+ if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws))
+ return 1;
+ }
+ }
return 0;
}
struct cmd_list_element *command)
{
const int enabled = 1;
- bool temp = get_cmd_context (command) == CATCH_TEMPORARY;
+ bool temp = command->context () == CATCH_TEMPORARY;
add_solib_catchpoint (arg, is_load, temp, enabled);
}
gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame);
CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame);
- scope_breakpoint
+ scope_breakpoint
= create_internal_breakpoint (caller_arch, caller_pc,
bp_watchpoint_scope,
&momentary_breakpoint_ops);
const char *cond_string = NULL;
catch_fork_kind fork_kind;
- fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command);
+ fork_kind = (catch_fork_kind) (uintptr_t) command->context ();
bool temp = (fork_kind == catch_fork_temporary
|| fork_kind == catch_vfork_temporary);
{
struct gdbarch *gdbarch = get_current_arch ();
const char *cond_string = NULL;
- bool temp = get_cmd_context (command) == CATCH_TEMPORARY;
+ bool temp = command->context () == CATCH_TEMPORARY;
if (!arg)
arg = "";
static void
force_breakpoint_reinsertion (struct bp_location *bl)
{
- struct bp_location **locp = NULL, **loc2p;
- struct bp_location *loc;
CORE_ADDR address = 0;
int pspace_num;
the same program space as the location
as "its condition has changed". We need to
update the conditions on the target's side. */
- ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address)
+ for (bp_location *loc : all_bp_locations_at_addr (address))
{
- loc = *loc2p;
-
if (!is_breakpoint (loc->owner)
|| pspace_num != loc->pspace->num)
continue;
for (breakpoint *b : all_breakpoints ())
if (b->next == bpt)
- {
- b->next = bpt->next;
- break;
- }
+ {
+ b->next = bpt->next;
+ break;
+ }
/* Be sure no bpstat's are pointing at the breakpoint after it's
been freed. */
for (breakpoint *b : all_breakpoints ())
if (b->number == bptnum)
- {
- if (is_tracepoint (b))
- {
- if (from_tty && count != 0)
- printf_filtered (_("Ignore count ignored for tracepoint %d."),
- bptnum);
- return;
- }
-
- b->ignore_count = count;
- if (from_tty)
- {
- if (count == 0)
- printf_filtered (_("Will stop next time "
- "breakpoint %d is reached."),
- bptnum);
- else if (count == 1)
- printf_filtered (_("Will ignore next crossing of breakpoint %d."),
- bptnum);
- else
- printf_filtered (_("Will ignore next %d "
- "crossings of breakpoint %d."),
- count, bptnum);
- }
- gdb::observers::breakpoint_modified.notify (b);
- return;
- }
+ {
+ if (is_tracepoint (b))
+ {
+ if (from_tty && count != 0)
+ printf_filtered (_("Ignore count ignored for tracepoint %d."),
+ bptnum);
+ return;
+ }
+
+ b->ignore_count = count;
+ if (from_tty)
+ {
+ if (count == 0)
+ printf_filtered (_("Will stop next time "
+ "breakpoint %d is reached."),
+ bptnum);
+ else if (count == 1)
+ printf_filtered (_("Will ignore next crossing of breakpoint %d."),
+ bptnum);
+ else
+ printf_filtered (_("Will ignore next %d "
+ "crossings of breakpoint %d."),
+ count, bptnum);
+ }
+ gdb::observers::breakpoint_modified.notify (b);
+ return;
+ }
error (_("No breakpoint number %d."), bptnum);
}
error (_("Junk at end of arguments."));
for (breakpoint *b : all_tracepoints ())
- {
- t1 = (struct tracepoint *) b;
- trace_pass_set_count (t1, count, from_tty);
- }
+ {
+ t1 = (struct tracepoint *) b;
+ trace_pass_set_count (t1, count, from_tty);
+ }
}
else if (*args == '\0')
{
for (breakpoint *t : all_tracepoints ())
if (t->number == tpnum)
- {
return (struct tracepoint *) t;
- }
printf_unfiltered ("No tracepoint number %d.\n", tpnum);
return NULL;
/* See if we have anything to save. */
for (breakpoint *tp : all_breakpoints ())
- {
- /* Skip internal and momentary breakpoints. */
- if (!user_breakpoint_p (tp))
- continue;
+ {
+ /* Skip internal and momentary breakpoints. */
+ if (!user_breakpoint_p (tp))
+ continue;
- /* If we have a filter, only save the breakpoints it accepts. */
- if (filter && !filter (tp))
- continue;
+ /* If we have a filter, only save the breakpoints it accepts. */
+ if (filter && !filter (tp))
+ continue;
- any = 1;
+ any = 1;
- if (is_tracepoint (tp))
- {
- extra_trace_bits = 1;
+ if (is_tracepoint (tp))
+ {
+ extra_trace_bits = 1;
- /* We can stop searching. */
- break;
- }
- }
+ /* We can stop searching. */
+ break;
+ }
+ }
if (!any)
{
save_trace_state_variables (&fp);
for (breakpoint *tp : all_breakpoints ())
- {
- /* Skip internal and momentary breakpoints. */
- if (!user_breakpoint_p (tp))
- continue;
+ {
+ /* Skip internal and momentary breakpoints. */
+ if (!user_breakpoint_p (tp))
+ continue;
- /* If we have a filter, only save the breakpoints it accepts. */
- if (filter && !filter (tp))
- continue;
+ /* If we have a filter, only save the breakpoints it accepts. */
+ if (filter && !filter (tp))
+ continue;
- tp->ops->print_recreate (tp, &fp);
+ tp->ops->print_recreate (tp, &fp);
- /* Note, we can't rely on tp->number for anything, as we can't
- assume the recreated breakpoint numbers will match. Use $bpnum
- instead. */
+ /* Note, we can't rely on tp->number for anything, as we can't
+ assume the recreated breakpoint numbers will match. Use $bpnum
+ instead. */
- if (tp->cond_string)
- fp.printf (" condition $bpnum %s\n", tp->cond_string);
+ if (tp->cond_string)
+ fp.printf (" condition $bpnum %s\n", tp->cond_string);
- if (tp->ignore_count)
- fp.printf (" ignore $bpnum %d\n", tp->ignore_count);
+ if (tp->ignore_count)
+ fp.printf (" ignore $bpnum %d\n", tp->ignore_count);
- if (tp->type != bp_dprintf && tp->commands)
- {
- fp.puts (" commands\n");
-
- current_uiout->redirect (&fp);
- try
- {
- print_command_lines (current_uiout, tp->commands.get (), 2);
- }
- catch (const gdb_exception &ex)
- {
- current_uiout->redirect (NULL);
- throw;
- }
+ if (tp->type != bp_dprintf && tp->commands)
+ {
+ fp.puts (" commands\n");
- current_uiout->redirect (NULL);
- fp.puts (" end\n");
- }
+ current_uiout->redirect (&fp);
+ try
+ {
+ print_command_lines (current_uiout, tp->commands.get (), 2);
+ }
+ catch (const gdb_exception &ex)
+ {
+ current_uiout->redirect (NULL);
+ throw;
+ }
- if (tp->enable_state == bp_disabled)
- fp.puts ("disable $bpnum\n");
+ current_uiout->redirect (NULL);
+ fp.puts (" end\n");
+ }
- /* If this is a multi-location breakpoint, check if the locations
- should be individually disabled. Watchpoint locations are
- special, and not user visible. */
- if (!is_watchpoint (tp) && tp->loc && tp->loc->next)
- {
- int n = 1;
+ if (tp->enable_state == bp_disabled)
+ fp.puts ("disable $bpnum\n");
- for (bp_location *loc : tp->locations ())
- {
- if (!loc->enabled)
- fp.printf ("disable $bpnum.%d\n", n);
+ /* If this is a multi-location breakpoint, check if the locations
+ should be individually disabled. Watchpoint locations are
+ special, and not user visible. */
+ if (!is_watchpoint (tp) && tp->loc && tp->loc->next)
+ {
+ int n = 1;
- n++;
- }
- }
- }
+ for (bp_location *loc : tp->locations ())
+ {
+ if (!loc->enabled)
+ fp.printf ("disable $bpnum.%d\n", n);
+
+ n++;
+ }
+ }
+ }
if (extra_trace_bits && *default_collect)
fp.printf ("set default-collect %s\n", default_collect);
command = add_cmd (name, class_breakpoint, docstring,
&catch_cmdlist);
set_cmd_sfunc (command, sfunc);
- set_cmd_context (command, user_data_catch);
+ command->set_context (user_data_catch);
set_cmd_completer (command, completer);
command = add_cmd (name, class_breakpoint, docstring,
&tcatch_cmdlist);
set_cmd_sfunc (command, sfunc);
- set_cmd_context (command, user_data_tcatch);
+ command->set_context (user_data_tcatch);
set_cmd_completer (command, completer);
}
-struct breakpoint *
-iterate_over_breakpoints (gdb::function_view<bool (breakpoint *)> callback)
-{
- for (breakpoint *b : all_breakpoints_safe ())
- if (callback (b))
- return b;
-
- return NULL;
-}
-
/* Zero if any of the breakpoint's locations could be a location where
functions have been inlined, nonzero otherwise. */
projects / deliverable / binutils-gdb.git / blobdiff