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* breakpoint.c (condition_command): Handle watchpoint conditions.
	(is_hardware_watchpoint): Add comment.
	(is_watchpoint): New.
	(update_watchpoint): Don't reparse the watchpoint's condition
	unless necessary.
	(WP_IGNORE): New.
	(watchpoint_check): Use it.
	(bpstat_check_watchpoint): Handle it.
	(bpstat_check_breakpoint_conditions): Evaluate watchpoint local
	conditions in a frame where it makes sense.
	(watch_command_1): Store the innermost block of the condition
	expression.
	(delete_breakpoint): Delete the watchpoint condition expression.
	* breakpoint.h (struct bp_location) <cond>: Update comment.
	(struct breakpoint): New fields `cond_exp' and
	`cond_exp_valid_block'.

	gdb/testsuite/
	* gdb.base/watch-cond.c, gdb.base/watch-cond.exp: New.
This commit is contained in:
Pedro Alves 2010-03-10 13:25:40 +00:00
parent a23c851aa4
commit 60e1c644b7
6 changed files with 297 additions and 58 deletions
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17
gdb/breakpoint.h
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@ -240,11 +240,13 @@ struct bp_location
than reference counting. */
struct breakpoint *owner;
/* Conditional. Break only if this expression's value is nonzero.
Unlike string form of condition, which is associated with breakpoint,
this is associated with location, since if breakpoint has several
locations, the evaluation of expression can be different for
different locations. */
/* Conditional. Break only if this expression's value is nonzero.
Unlike string form of condition, which is associated with
breakpoint, this is associated with location, since if breakpoint
has several locations, the evaluation of expression can be
different for different locations. Only valid for real
breakpoints; a watchpoint's conditional expression is stored in
the owner breakpoint object. */
struct expression *cond;
/* This location's address is in an unloaded solib, and so this
@ -439,6 +441,11 @@ struct breakpoint
/* The largest block within which it is valid, or NULL if it is
valid anywhere (e.g. consists just of global symbols). */
struct block *exp_valid_block;
/* The conditional expression if any. NULL if not a watchpoint. */
struct expression *cond_exp;
/* The largest block within which it is valid, or NULL if it is
valid anywhere (e.g. consists just of global symbols). */
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. */