#include "solib.h"
#include "solist.h"
#include "observer.h"
-#include "exceptions.h"
#include "memattr.h"
#include "ada-lang.h"
#include "top.h"
the inferior. */
UGLL_DONT_INSERT,
- /* May insert breakpoints if breakpoints_always_inserted_mode is
- true. */
+ /* May insert breakpoints iff breakpoints_should_be_inserted_now
+ claims breakpoints should be inserted now. */
UGLL_MAY_INSERT,
- /* Insert locations now, even if breakpoints_always_inserted_mode is
- false. */
+ /* Insert locations now, irrespective of
+ breakpoints_should_be_inserted_now. E.g., say all threads are
+ stopped right now, and the user did "continue". We need to
+ insert breakpoints _before_ resuming the target, but
+ UGLL_MAY_INSERT wouldn't insert them, because
+ breakpoints_should_be_inserted_now returns false at that point,
+ as no thread is running yet. */
UGLL_INSERT
};
value);
}
-/* If on, gdb will keep breakpoints inserted even as inferior is
- stopped, and immediately insert any new breakpoints. If off, gdb
- will insert breakpoints into inferior only when resuming it, and
- will remove breakpoints upon stop. If auto, GDB will behave as ON
- if in non-stop mode, and as OFF if all-stop mode.*/
-
-static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO;
+/* If on, GDB keeps breakpoints inserted even if the inferior is
+ stopped, and immediately inserts any new breakpoints as soon as
+ they're created. If off (default), GDB keeps breakpoints off of
+ the target as long as possible. That is, it delays inserting
+ breakpoints until the next resume, and removes them again when the
+ target fully stops. This is a bit safer in case GDB crashes while
+ processing user input. */
+static int always_inserted_mode = 0;
static void
show_always_inserted_mode (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
- if (always_inserted_mode == AUTO_BOOLEAN_AUTO)
- fprintf_filtered (file,
- _("Always inserted breakpoint "
- "mode is %s (currently %s).\n"),
- value,
- breakpoints_always_inserted_mode () ? "on" : "off");
- else
- fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"),
- value);
+ fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"),
+ value);
}
+/* See breakpoint.h. */
+
int
-breakpoints_always_inserted_mode (void)
+breakpoints_should_be_inserted_now (void)
{
- return (always_inserted_mode == AUTO_BOOLEAN_TRUE
- || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop));
+ if (gdbarch_has_global_breakpoints (target_gdbarch ()))
+ {
+ /* If breakpoints are global, they should be inserted even if no
+ thread under gdb's control is running, or even if there are
+ no threads under GDB's control yet. */
+ return 1;
+ }
+ else if (target_has_execution)
+ {
+ if (always_inserted_mode)
+ {
+ /* The user wants breakpoints inserted even if all threads
+ are stopped. */
+ return 1;
+ }
+
+ if (threads_are_executing ())
+ return 1;
+ }
+ return 0;
}
static const char condition_evaluation_both[] = "host or target";
else
{
const unsigned char *bp;
- CORE_ADDR placed_address = target_info->placed_address;
- int placed_size = target_info->placed_size;
+ CORE_ADDR addr = target_info->reqstd_address;
+ int placed_size;
/* Update the shadow with what we want to write to memory. */
memcpy (target_info->shadow_contents + bptoffset,
/* Determine appropriate breakpoint contents and size for this
address. */
- bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size);
+ bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size);
/* Update the final write buffer with this inserted
breakpoint's INSN. */
|| bl->loc_type == bp_loc_hardware_breakpoint)
&& stepping_past_instruction_at (bl->pspace->aspace,
bl->address))
- return 0;
+ {
+ if (debug_infrun)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "infrun: skipping breakpoint: "
+ "stepping past insn at: %s\n",
+ paddress (bl->gdbarch, bl->address));
+ }
+ return 0;
+ }
return 1;
}
we have a breakpoint inserted at that address and thus
read the breakpoint instead of returning the data saved in
the breakpoint location's shadow contents. */
- bl->target_info.placed_address = bl->address;
+ bl->target_info.reqstd_address = bl->address;
bl->target_info.placed_address_space = bl->pspace->aspace;
bl->target_info.length = bl->length;
program, but it's not going to work anyway with current
gdb. */
struct mem_region *mr
- = lookup_mem_region (bl->target_info.placed_address);
+ = lookup_mem_region (bl->target_info.reqstd_address);
if (mr)
{
}
}
else if (bl->loc_type == bp_loc_software_breakpoint
- && mr->attrib.mode != MEM_RW)
- warning (_("cannot set software breakpoint "
- "at readonly address %s"),
- paddress (bl->gdbarch, bl->address));
+ && mr->attrib.mode != MEM_RW)
+ {
+ fprintf_unfiltered (tmp_error_stream,
+ _("Cannot insert breakpoint %d.\n"
+ "Cannot set software breakpoint "
+ "at read-only address %s\n"),
+ bl->owner->number,
+ paddress (bl->gdbarch, bl->address));
+ return 1;
+ }
}
}
bl->section);
/* Set a software (trap) breakpoint at the LMA. */
bl->overlay_target_info = bl->target_info;
- bl->overlay_target_info.placed_address = addr;
+ bl->overlay_target_info.reqstd_address = addr;
/* No overlay handling: just set the breakpoint. */
TRY_CATCH (e, RETURN_MASK_ALL)
continue;
}
}
- /* FIXME what about longjmp breakpoints? Re-create them here? */
- create_overlay_event_breakpoint ();
- create_longjmp_master_breakpoint ();
- create_std_terminate_master_breakpoint ();
- create_exception_master_breakpoint ();
}
int
"a permanent breakpoint"));
}
- if (insert_mode == UGLL_INSERT
- || (breakpoints_always_inserted_mode ()
- && (have_live_inferiors ()
- || (gdbarch_has_global_breakpoints (target_gdbarch ())))))
+ if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ())
{
if (insert_mode != UGLL_DONT_INSERT)
insert_breakpoint_locations ();
{
dest->shadow_len = src->shadow_len;
memcpy (dest->shadow_contents, src->shadow_contents, src->shadow_len);
+ dest->placed_address = src->placed_address;
dest->placed_size = src->placed_size;
}
/* There is no need to insert a breakpoint if an unconditional
raw/sss breakpoint is already inserted at that location. */
sss_slot = find_single_step_breakpoint (bp_tgt->placed_address_space,
- bp_tgt->placed_address);
+ bp_tgt->reqstd_address);
if (sss_slot >= 0)
{
struct bp_target_info *sss_bp_tgt = single_step_breakpoints[sss_slot];
{
struct bp_target_info *bp_tgt = &bl->target_info;
struct address_space *aspace = bp_tgt->placed_address_space;
- CORE_ADDR address = bp_tgt->placed_address;
+ CORE_ADDR address = bp_tgt->reqstd_address;
/* Only remove the breakpoint if there is no raw/sss breakpoint
still inserted at this location. Otherwise, we would be
bp_tgt = XCNEW (struct bp_target_info);
bp_tgt->placed_address_space = aspace;
- bp_tgt->placed_address = pc;
+ bp_tgt->reqstd_address = pc;
/* If an unconditional non-raw breakpoint is already inserted at
that location, there's no need to insert another. However, with
{
struct bp_target_info *bp_tgt = bp;
struct address_space *aspace = bp_tgt->placed_address_space;
- CORE_ADDR address = bp_tgt->placed_address;
+ CORE_ADDR address = bp_tgt->reqstd_address;
struct bp_location *bl;
int ret;
struct bp_target_info *bp_tgt = single_step_breakpoints[i];
if (bp_tgt
&& breakpoint_address_match (bp_tgt->placed_address_space,
- bp_tgt->placed_address,
+ bp_tgt->reqstd_address,
aspace, pc))
return i;
}
}
if (tp->enable_state == bp_disabled)
- fprintf_unfiltered (fp, "disable\n");
+ fprintf_unfiltered (fp, "disable $bpnum\n");
/* If this is a multi-location breakpoint, check if the locations
should be individually disabled. Watchpoint locations are
&breakpoint_set_cmdlist,
&breakpoint_show_cmdlist);
- add_setshow_auto_boolean_cmd ("always-inserted", class_support,
- &always_inserted_mode, _("\
+ add_setshow_boolean_cmd ("always-inserted", class_support,
+ &always_inserted_mode, _("\
Set mode for inserting breakpoints."), _("\
Show mode for inserting breakpoints."), _("\
-When this mode is off, breakpoints are inserted in inferior when it is\n\
-resumed, and removed when execution stops. When this mode is on,\n\
-breakpoints are inserted immediately and removed only when the user\n\
-deletes the breakpoint. When this mode is auto (which is the default),\n\
-the behaviour depends on the non-stop setting (see help set non-stop).\n\
-In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\
-behaves as if always-inserted mode is on; if gdb is controlling the\n\
-inferior in all-stop mode, gdb behaves as if always-inserted mode is off."),
+When this mode is on, breakpoints are inserted immediately as soon as\n\
+they're created, kept inserted even when execution stops, and removed\n\
+only when the user deletes them. When this mode is off (the default),\n\
+breakpoints are inserted only when execution continues, and removed\n\
+when execution stops."),
NULL,
&show_always_inserted_mode,
&breakpoint_set_cmdlist,
projects / platform / upstream / binutils.git / blobdiff