opcodes: blackfin: fix decoding of 32bit addresses on 64bit systems

The Blackfin ISA is very exact with regards to address truncation when
under/over flowing its 32bit range.  On a 32bit system, things work the
same and so addresses are decoded properly.  On a 64bit system though,
the decoded addresses may include the bits that are supposed to have
been truncated.  So force a 32bit truncation after the address has been
calculated.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 07c4d89..449954e 100644 (file)
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-22  Robin Getz  <robin.getz@analog.com>
+
+       * bfin-dis.c (fmtconst): Cast address to 32bits.
+
 2010-09-22  Mike Frysinger  <vapier@gentoo.org>
 
        * bfin-dis.c (decode_REGMV_0): Rewrite valid combo checks.

diff --git a/opcodes/bfin-dis.c b/opcodes/bfin-dis.c
index b17e055..0aec087 100644 (file)
--- a/opcodes/bfin-dis.c
+++ b/opcodes/bfin-dis.c
@@ -138,6 +138,9 @@ fmtconst (const_forms_t cf, TIword x, bfd_vma pc, disassemble_info *outf)
       if (constant_formats[cf].pcrel)
        ea += pc;
 
+     /* truncate to 32-bits for proper symbol lookup/matching */
+     ea = (bu32)ea;
+
      if (outf->symbol_at_address_func (ea, outf) || !constant_formats[cf].exact)
        {
          outf->print_address_func (ea, outf);