From mboxrd@z Thu Jan  1 00:00:00 1970
From: Daniel Jacobowitz <drow@mvista.com>
To: gdb@sources.redhat.com
Subject: The problem with stabs and sign extension
Date: Wed, 08 Aug 2001 14:11:00 -0000
Message-id: <20010808141207.A31287@nevyn.them.org>
X-SW-Source: 2001-08/msg00078.html

The problem seems, to my inexperienced eye, to be in stabsread.c:

#define INTERNALIZE_SYMBOL(intern, extern, abfd)                        \
  {                                                                     \
    (intern).n_type = bfd_h_get_8 (abfd, (extern)->e_type);             \
    (intern).n_strx = bfd_h_get_32 (abfd, (extern)->e_strx);            \
    (intern).n_desc = bfd_h_get_16 (abfd, (extern)->e_desc);            \
    (intern).n_value = bfd_h_get_32 (abfd, (extern)->e_value);          \
  }

n_value is a CORE_ADDR.  bfd_h_get_32 returns a bfd_vma, without doing sign
extension.  For MIPS, we want sign extension to have happened here.  Right? 
It does if we're reading mdebug in (because ECOFF_SIGNED_32 is defined in
BFD).

On the other hand, I'm sure other targets don't want sign extension here. 
How should we handle this?

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer