2006-06-05 David Smith <dsmith@redhat.com>

2006-06-05  David Smith  <dsmith@redhat.com>

	* tapsets.cxx (dwflpp::express_as_string): New function.
	Extracted from dwflpp::literal_stmt_for_local() so that
	dwflpp::literal_stmt_for_return() could also call it.
	(dwflpp::literal_stmt_for_local): Portion extracted to create
	dwflpp::express_as_string().
	(dwflpp::literal_stmt_for_return): New function.  Adds support for
	new symbolic access ("$return") to return value in .return
	probes.  Fixes PR 1132.
	(target_variable_flavour_calculating_visitor::visit_target_symbol):
	Calls dwflpp::literal_stmt_for_return() when in a return probe and
	the variable name is "$return".
	(dwarf_var_expanding_copy_visitor::visit_target_symbol): Ditto.
	* stapfuncs.5.in: Noted that the retval() function is deprecated.
	* stapprobes.5.in: Corrected the name of the return value
	variable.
	* tapset/return.stp: Marked the retval() function as deprecated.
	* testsuite/semko/return01.stp: Added new test.
	* testsuite/semko/return02.stp: Ditto.