Explicit locations: introduce probe locations

This patch adds support for probe locations and converts existing
probe linespec locations to the new location type.

gdb/ChangeLog:

	* break-catch-throw.c (re_set_exception_catchpoint): Convert
	linespec for stap probe to probe location.
	* breakpoint.c (create_longjmp_master_breakpoint)
	(create_exception_master_breakpoint): Likewise.
	(break_command_1): Remove local variable `arg_cp'.
	Check location type to set appropriate breakpoint ops methods.
	(trace_command): Likewise.
	* linespec.c (event_location_to_sals): Assert on probe locations.
	* location.c (EL_PROBE): Add macro definition.
	(new_probe_location, get_probe_location): New functions.
	(copy_event_location, delete_event_location, event_location_to_string)
	(string_to_event_location, event_location_empty_p): Handle probe
	locations.
	* location.h (enum event_location_type): Add PROBE_LOCATION.
	(new_probe_location, get_probe_location): Declare.
	* probe.c (parse_probes): Assert that LOCATION is a probe location.
	Convert linespec into probe location.

1 files changed, 16 insertions, 1 deletions

diff --git a/gdb/location.h b/gdb/location.h
index 7b9741b..63318ba 100644
--- a/gdb/location.h
+++ b/gdb/location.h
@@ -31,7 +31,10 @@ enum event_location_type
   LINESPEC_LOCATION,
 
   /* An address in the inferior.  */
-  ADDRESS_LOCATION
+  ADDRESS_LOCATION,
+
+  /* A probe location.  */
+  PROBE_LOCATION
 };
 
 /* Return the type of the given event location.  */
@@ -72,6 +75,18 @@ extern struct event_location *
 extern CORE_ADDR
   get_address_location (const struct event_location *location);
 
+/* Create a new probe location.  The return result is malloc'd
+   and should be freed with delete_event_location.  */
+
+extern struct event_location *
+  new_probe_location (const char *probe);
+
+/* Return the probe location (a string) of the given event_location
+   (which must be of type PROBE_LOCATION).  */
+
+extern const char *
+  get_probe_location (const struct event_location *location);
+
 /* Free an event location and any associated data.  */
 
 extern void delete_event_location (struct event_location *location);