| /* | |
| * Check to see if an object reference is an instance of a class. | |
| * | |
| * Most common situation is a non-null object, being compared against | |
| * an already-resolved class. | |
| */ | |
| /* instance-of vA, vB, class@CCCC */ | |
| EXPORT_PC() | |
| FETCH(a0, 1) # a0 <- CCCC | |
| GET_OPB(a1) # a1 <- B | |
| EAS2(a1, rFP, a1) # a1 <- &object | |
| lw a2, OFF_FP_METHOD(rFP) # a2 <- method | |
| move a3, rSELF # a3 <- self | |
| GET_OPA4(rOBJ) # rOBJ <- A+ | |
| JAL(MterpInstanceOf) # v0 <- Mterp(index, &obj, method, self) | |
| lw a1, THREAD_EXCEPTION_OFFSET(rSELF) | |
| PREFETCH_INST(2) # load rINST | |
| bnez a1, MterpException | |
| ADVANCE(2) # advance rPC | |
| GET_INST_OPCODE(t0) # extract opcode from rINST | |
| SET_VREG_GOTO(v0, rOBJ, t0) # vA <- v0 |