2007-04-05 H.J. Lu <hongjiu.lu@intel.com>

[deliverable/binutils-gdb.git] / gdb / dwarf2loc.c

diff --git a/gdb/dwarf2loc.c b/gdb/dwarf2loc.c
index f4f725ee438f3ae9eeda37a68330aff492060fd6..a179566cfa58d232950d3a294e77cede1b4c21bc 100644 (file)
--- a/gdb/dwarf2loc.c
+++ b/gdb/dwarf2loc.c
@@ -1,6 +1,6 @@
 /* DWARF 2 location expression support for GDB.
 
-   Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2003, 2005, 2007 Free Software Foundation, Inc.
 
    Contributed by Daniel Jacobowitz, MontaVista Software, Inc.
 
@@ -115,24 +115,17 @@ struct dwarf_expr_baton
 /* Helper functions for dwarf2_evaluate_loc_desc.  */
 
 /* Using the frame specified in BATON, return the value of register
-   REGNUM, treated as an unsigned integer.  */
+   REGNUM, treated as a pointer.  */
 static CORE_ADDR
 dwarf_expr_read_reg (void *baton, int dwarf_regnum)
 {
   struct dwarf_expr_baton *debaton = (struct dwarf_expr_baton *) baton;
   CORE_ADDR result;
-  gdb_byte *buf;
-  int regnum, regsize;
+  int regnum;
 
   regnum = DWARF2_REG_TO_REGNUM (dwarf_regnum);
-  regsize = register_size (current_gdbarch, regnum);
-  buf = alloca (regsize);
-
-  frame_register_read (debaton->frame, regnum, buf);
-  /* NOTE: cagney/2003-05-22: This extract is assuming that a DWARF 2
-     address is always unsigned.  That may or may not be true.  */
-  result = extract_unsigned_integer (buf, regsize);
-
+  result = address_from_register (builtin_type_void_data_ptr,
+                                 regnum, debaton->frame);
   return result;
 }
 
@@ -208,6 +201,7 @@ dwarf2_evaluate_loc_desc (struct symbol *var, struct frame_info *frame,
       retval = allocate_value (SYMBOL_TYPE (var));
       VALUE_LVAL (retval) = not_lval;
       set_value_optimized_out (retval, 1);
+      return retval;
     }
 
   baton.frame = frame;