#objdump: -dwMsuffix #name: i386 rep prefix (with suffixes) .*: +file format .* Disassembly of section .text: 0+000 <_start>: 0: f3 ac[ ]+rep lodsb %ds:\(%esi\),%al 2: f3 aa[ ]+rep stosb %al,%es:\(%edi\) 4: 66 f3 ad[ ]+rep lodsw %ds:\(%esi\),%ax 7: 66 f3 ab[ ]+rep stosw %ax,%es:\(%edi\) a: f3 ad[ ]+rep lodsl %ds:\(%esi\),%eax c: f3 ab[ ]+rep stosl %eax,%es:\(%edi\) e: f3 0f bc c1[ ]+tzcntl %ecx,%eax 12: f3 0f bd c1[ ]+lzcntl %ecx,%eax 16: f3 c3[ ]+repz retl\s* 18: f3 90[ ]+pause\s* #pass