http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54983
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |INVALID --- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2012-10-19 16:54:41 UTC --- The 'o' in "+Qo" is invalid for this instruction. There is, unfortunately, no way to specify in inline assembly instructions the precise addressing range of strh. I think your safest bet is to use "Q".