gdb/

	Support @entry in input expressions.
	* c-exp.y (ENTRY, unknown_cpp_name): New.
	(exp: UNKNOWN_CPP_NAME): Change to `exp: unknown_cpp_name'.
	(unknown_cpp_name: UNKNOWN_CPP_NAME, unknown_cpp_name: ENTRY)
	(variable: name_not_typename '@' ENTRY, name: ENTRY)
	(name_not_typename: ENTRY): New.
	(yylex): Recognize ENTRY.
	* eval.c (evaluate_subexp_standard): Support also OP_VAR_ENTRY_VALUE.
	* expprint.c (print_subexp_standard, dump_subexp_body_standard):
	Likewise.
	* parse.c (operator_length_standard): Likewise.
	* std-operator.def: New operator OP_VAR_ENTRY_VALUE.

gdb/doc/
	Support @entry in input expressions.
	* gdb.texinfo (Variables): Describe @entry names suffix.
	(Print Settings): Add anchor for `set print entry-values'.

gdb/testsuite/
	Support @entry in input expressions.
	* gdb.arch/amd64-entry-value.exp (entry: p i@entry, entry: p j@entry)
	(entry_stack: p s1@entry, entry_stack: p s2@entry)
	(entry_stack: p d9@entry, entry_stack: p da@entry, tailcall: p i@entry)
	(tailcall: p j@entry): New tests.
	* gdb.cp/koenig.cc (A::entry): New function.
	(main): Call it.
	* gdb.cp/koenig.exp (p entry (c)): New test.

1 files changed, 21 insertions, 0 deletions

diff --git a/gdb/eval.c b/gdb/eval.c
index af225c4..0956449 100644
--- a/gdb/eval.c
+++ b/gdb/eval.c
@@ -860,6 +860,27 @@ evaluate_subexp_standard (struct type *expect_type,
 	return ret;
       }
 
+    case OP_VAR_ENTRY_VALUE:
+      (*pos) += 2;
+      if (noside == EVAL_SKIP)
+	goto nosideret;
+
+      {
+	struct symbol *sym = exp->elts[pc + 1].symbol;
+	struct frame_info *frame;
+
+	if (noside == EVAL_AVOID_SIDE_EFFECTS)
+	  return value_zero (SYMBOL_TYPE (sym), not_lval);
+
+	if (SYMBOL_CLASS (sym) != LOC_COMPUTED
+	    || SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry == NULL)
+	  error (_("Symbol \"%s\" does not have any specific entry value"),
+		 SYMBOL_PRINT_NAME (sym));
+
+	frame = get_selected_frame (NULL);
+	return SYMBOL_COMPUTED_OPS (sym)->read_variable_at_entry (sym, frame);
+      }
+
     case OP_LAST:
       (*pos) += 2;
       return