/* 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.
/* Helper functions for dwarf2_evaluate_loc_desc. */
-/* Using the frame specified in BATON, read register REGNUM. The lval
- type will be returned in LVALP, and for lval_memory the register
- save address will be returned in ADDRP. */
+/* Using the frame specified in BATON, return the value of register
+ 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, save_addr;
- enum lval_type lval_type;
- gdb_byte *buf;
- int optimized, regnum, realnum, regsize;
+ CORE_ADDR result;
+ int regnum;
regnum = DWARF2_REG_TO_REGNUM (dwarf_regnum);
- regsize = register_size (current_gdbarch, regnum);
- buf = alloca (regsize);
-
- frame_register (debaton->frame, regnum, &optimized, &lval_type, &save_addr,
- &realnum, 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;
}
retval = allocate_value (SYMBOL_TYPE (var));
VALUE_LVAL (retval) = not_lval;
set_value_optimized_out (retval, 1);
+ return retval;
}
baton.frame = frame;