1%verify "executed"
2%verify "exception for null object"
3    /*
4     * Synchronize on an object.
5     */
6    /* monitor-enter vAA */
7    mov     r2, rINST, lsr #8           @ r2<- AA
8    GET_VREG(r1, r2)                    @ r1<- vAA (object)
9    mov     r0, rSELF                   @ r0<- self
10    cmp     r1, #0                      @ null object?
11    EXPORT_PC()                         @ need for precise GC
12    beq     common_errNullObject        @ null object, throw an exception
13    FETCH_ADVANCE_INST(1)               @ advance rPC, load rINST
14    bl      dvmLockObject               @ call(self, obj)
15    GET_INST_OPCODE(ip)                 @ extract opcode from rINST
16    GOTO_OPCODE(ip)                     @ jump to next instruction
17