Handle "LOCK as REX.R" for MOV CRx; fix warning for invalid 64-bit regs

- MOV gpr,CRx or MOV CRx,gpr can access high control registers with a LOCK
  prefix; handle that in both the assembler and disassembler.
- Get a saner error message when trying to access high resources in
  non-64-bit mode.

1 files changed, 2 insertions, 0 deletions

diff --git a/nasmlib.h b/nasmlib.h
index f6e4a3b8..7dec54de 100644
--- a/nasmlib.h
+++ b/nasmlib.h
@@ -271,4 +271,6 @@ void null_debug_routine(const char *directive, const char *params);
 extern struct dfmt null_debug_form;
 extern struct dfmt *null_debug_arr[2];
 
+const char *prefix_name(int);
+
 #endif