1 /* 2 * Check to see if an object reference is an instance of a class. 3 * 4 * Most common situation is a non-null object, being compared against 5 * an already-resolved class. 6 */ 7 /* instance-of vA, vB, class@CCCC */ 8 EXPORT_PC 9 FETCH r0, 1 @ r0<- CCCC 10 mov r1, rINST, lsr #12 @ r1<- B 11 VREG_INDEX_TO_ADDR r1, r1 @ r1<- &object 12 ldr r2, [rFP, #OFF_FP_METHOD] @ r2<- method 13 mov r3, rSELF @ r3<- self 14 bl MterpInstanceOf @ (index, &obj, method, self) 15 ldr r1, [rSELF, #THREAD_EXCEPTION_OFFSET] 16 ubfx r9, rINST, #8, #4 @ r9<- A 17 PREFETCH_INST 2 18 cmp r1, #0 @ exception pending? 19 bne MterpException 20 ADVANCE 2 @ advance rPC 21 SET_VREG r0, r9 @ vA<- r0 22 GET_INST_OPCODE ip @ extract opcode from rINST 23 GOTO_OPCODE ip @ jump to next instruction 24
