Trying to fix dwarf bugs. Seem related to having wrong stack pointer reg num.
Also problems with the instruction pattern for push, seems that it doesn't like some expressions.
Therefore remove the FRAME related marking (although it might be fixed with REG_FRAME_RELATED_EXPR)
Now it crashes again with soft-fp, seems related due to native floating point support.Maybe implement dummy insts? Or disable softfloat? Dunno.....