While st(0) ... st(7) were properly printed without prefix in Intel mode disassembly, st alone wasn't. Built and tested on i686-pc-linux-gnu and x86_64-unknown-linux-gnu. Jan opcodes/ 2005-12-08 Jan Beulich * i386-dis.c (OP_ST): Remove prefix in Intel mode. --- /home/jbeulich/src/binutils/mainline/2005-12-08/opcodes/i386-dis.c 2005-12-08 11:37:24.000000000 +0100 +++ 2005-12-08/opcodes/i386-dis.c 2005-12-08 11:28:46.000000000 +0100 @@ -2725,7 +2728,7 @@ dofloat (int sizeflag) static void OP_ST (int bytemode ATTRIBUTE_UNUSED, int sizeflag ATTRIBUTE_UNUSED) { - oappend ("%st"); + oappend ("%st" + intel_syntax); } static void