+2010-11-12 Nathan Froyd <froydnj@codesourcery.com>
+
+ * rs6000-tdep.c (gdb_print_insn_powerpc): Disassemble e500
+ instructions if debugging an E500 binary.
+
2010-11-12 Tom Tromey <tromey@redhat.com>
* varobj.c (value_get_print_value): Rearrange. Pass stream to
gdb_print_insn_powerpc (bfd_vma memaddr, disassemble_info *info)
{
if (!info->disassembler_options)
- info->disassembler_options = "any";
+ {
+ /* When debugging E500 binaries and disassembling code containing
+ E500-specific (SPE) instructions, one sometimes sees AltiVec
+ instructions instead. The opcode spaces for SPE instructions
+ and AltiVec instructions overlap, and specifiying the "any" cpu
+ looks for AltiVec instructions first. If we know we're
+ debugging an E500 binary, however, we can specify the "e500x2"
+ cpu and get much more sane disassembly output. */
+ if (info->mach == bfd_mach_ppc_e500)
+ info->disassembler_options = "e500x2";
+ else
+ info->disassembler_options = "any";
+ }
if (info->endian == BFD_ENDIAN_BIG)
return print_insn_big_powerpc (memaddr, info);