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2012-01-18 Pedro Alves <palves@redhat.com>

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* record.c (struct record_breakpoint, record_breakpoint_p)
	(record_breakpoints): New.
	(record_insert_breakpoint, record_remove_breakpoint): Manage
	record breakpoints list.  Only remove breakpoints from the
	inferior if they had been inserted there in the first place.
This commit is contained in:
Pedro Alves 2012-01-18 11:51:55 +00:00
parent b750fb87a1
commit 0695b514b3
2 changed files with 82 additions and 12 deletions
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8
gdb/ChangeLog
View File

@ -1,3 +1,11 @@
2012-01-18 Pedro Alves <palves@redhat.com>
* record.c (struct record_breakpoint, record_breakpoint_p)
(record_breakpoints): New.
(record_insert_breakpoint, record_remove_breakpoint): Manage
record breakpoints list. Only remove breakpoints from the
inferior if they had been inserted there in the first place.
2012-01-17 Doug Evans <dje@google.com>
* linespec.c (decode_line_internal): Don't call symtabs_from_filename

86
gdb/record.c
View File

@ -1718,24 +1718,68 @@ record_xfer_partial (struct target_ops *ops, enum target_object object,
offset, len);
}
/* Behavior is conditional on RECORD_IS_REPLAY.
We will not actually insert or remove breakpoints when replaying,
nor when recording. */
/* This structure represents a breakpoint inserted while the record
target is active. We use this to know when to install/remove
breakpoints in/from the target beneath. For example, a breakpoint
may be inserted while recording, but removed when not replaying nor
recording. In that case, the breakpoint had not been inserted on
the target beneath, so we should not try to remove it there. */
struct record_breakpoint
{
/* The address and address space the breakpoint was set at. */
struct address_space *address_space;
CORE_ADDR addr;
/* True when the breakpoint has been also installed in the target
beneath. This will be false for breakpoints set during replay or
when recording. */
int in_target_beneath;
};
typedef struct record_breakpoint *record_breakpoint_p;
DEF_VEC_P(record_breakpoint_p);
/* The list of breakpoints inserted while the record target is
active. */
VEC(record_breakpoint_p) *record_breakpoints = NULL;
/* Behavior is conditional on RECORD_IS_REPLAY. We will not actually
insert or remove breakpoints in the real target when replaying, nor
when recording. */
static int
record_insert_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt)
{
struct record_breakpoint *bp;
int in_target_beneath = 0;
if (!RECORD_IS_REPLAY)
{
struct cleanup *old_cleanups = record_gdb_operation_disable_set ();
int ret = record_beneath_to_insert_breakpoint (gdbarch, bp_tgt);
/* When recording, we currently always single-step, so we don't
really need to install regular breakpoints in the inferior.
However, we do have to insert software single-step
breakpoints, in case the target can't hardware step. To keep
things single, we always insert. */
struct cleanup *old_cleanups;
int ret;
old_cleanups = record_gdb_operation_disable_set ();
ret = record_beneath_to_insert_breakpoint (gdbarch, bp_tgt);
do_cleanups (old_cleanups);
return ret;
if (ret != 0)
return ret;
in_target_beneath = 1;
}
bp = XNEW (struct record_breakpoint);
bp->addr = bp_tgt->placed_address;
bp->address_space = bp_tgt->placed_address_space;
bp->in_target_beneath = in_target_beneath;
VEC_safe_push (record_breakpoint_p, record_breakpoints, bp);
return 0;
}
@ -1745,17 +1789,35 @@ static int
record_remove_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt)
{
if (!RECORD_IS_REPLAY)
struct record_breakpoint *bp;
int ix;
for (ix = 0;
VEC_iterate (record_breakpoint_p, record_breakpoints, ix, bp);
++ix)
{
struct cleanup *old_cleanups = record_gdb_operation_disable_set ();
int ret = record_beneath_to_remove_breakpoint (gdbarch, bp_tgt);
if (bp->addr == bp_tgt->placed_address
&& bp->address_space == bp_tgt->placed_address_space)
{
if (bp->in_target_beneath)
{
struct cleanup *old_cleanups;
int ret;
do_cleanups (old_cleanups);
old_cleanups = record_gdb_operation_disable_set ();
ret = record_beneath_to_remove_breakpoint (gdbarch, bp_tgt);
do_cleanups (old_cleanups);
return ret;
if (ret != 0)
return ret;
}
VEC_unordered_remove (record_breakpoint_p, record_breakpoints, ix);
return 0;
}
}
return 0;
gdb_assert_not_reached ("removing unknown breakpoint");
}
/* "to_can_execute_reverse" method for process record target. */