initial x86-64 host support (Gwenole Beauchesne)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@670 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/disas.c b/disas.c
index f274ac5..f048348 100644
--- a/disas.c
+++ b/disas.c
@@ -140,9 +140,12 @@
 #else
 	disasm_info.endian = BFD_ENDIAN_LITTLE;
 #endif
-#ifdef __i386__
+#if defined(__i386__)
 	disasm_info.mach = bfd_mach_i386_i386;
 	print_insn = print_insn_i386;
+#elif defined(__x86_64__)
+	disasm_info.mach = bfd_mach_x86_64;
+	print_insn = print_insn_i386;
 #elif defined(__powerpc__)
 	print_insn = print_insn_ppc;
 #elif defined(__alpha__)