| buzbee | 1452bee | 2015-03-06 14:43:04 -0800 | [diff] [blame^] | 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 | GET_VREG r1, r1 @ r1<- vB (object) |
| 12 | ldr r2, [rFP, #OFF_FP_METHOD] @ r2<- method |
| 13 | mov r3, rSELF @ r3<- self |
| 14 | mov r9, rINST, lsr #8 @ r9<- A+ |
| 15 | and r9, r9, #15 @ r9<- A |
| 16 | bl MterpInstanceOf @ (index, obj, method, self) |
| 17 | ldr r1, [rSELF, #THREAD_EXCEPTION_OFFSET] |
| 18 | PREFETCH_INST 2 |
| 19 | cmp r1, #0 @ exception pending? |
| 20 | bne MterpException |
| 21 | ADVANCE 2 @ advance rPC |
| 22 | SET_VREG r0, r9 @ vA<- r0 |
| 23 | GET_INST_OPCODE ip @ extract opcode from rINST |
| 24 | GOTO_OPCODE ip @ jump to next instruction |