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    ldr     r0, [rGLUE, #offGlue_self]  @ r0<- glue->self
10    cmp     r1, #0                      @ null object?
11#ifdef WITH_MONITOR_TRACKING
12    EXPORT_PC()                         @ export PC so we can grab stack trace
13#endif
14    beq     common_errNullObject        @ null object, throw an exception
15    FETCH_ADVANCE_INST(1)               @ advance rPC, load rINST
16    bl      dvmLockObject               @ call(self, obj)
17#ifdef WITH_DEADLOCK_PREDICTION /* implies WITH_MONITOR_TRACKING */
18    ldr     r0, [rGLUE, #offGlue_self]  @ r0<- glue->self
19    ldr     r1, [r0, #offThread_exception] @ check for exception
20    cmp     r1, #0
21    bne     common_exceptionThrown      @ exception raised, bail out
22#endif
23    GET_INST_OPCODE(ip)                 @ extract opcode from rINST
24    GOTO_OPCODE(ip)                     @ jump to next instruction
25
26