add blx()
add bx()
add getCode(), getSize() and setSize()
push/pop allows 16 args
@@f means pointer of label "@@" after "@@"
Bugfix.
Not use find but equal_range to enumerate from multimap.
@@b means pointer of label "@@" before "@@"
add mov(reg, imm)
add add(reg, "label") which means add(reg, pc + offset)
add ldmdb(reg1, reg2, ...)
add b("label")