%default { "postbarrier":"@ no-op ", "prebarrier":"@ no-op ", "sqnum":"0" } %verify "executed" %verify "null object" %verify "field already resolved" %verify "field not yet resolved" %verify "field cannot be resolved" /* * 32-bit instance field put. * * for: iput-object, iput-object-volatile */ /* op vA, vB, field@CCCC */ mov r0, rINST, lsr #12 @ r0<- B ldr r3, [rSELF, #offThread_methodClassDex] @ r3<- DvmDex FETCH(r1, 1) @ r1<- field ref CCCC ldr r2, [r3, #offDvmDex_pResFields] @ r2<- pDvmDex->pResFields GET_VREG(r9, r0) @ r9<- fp[B], the object pointer ldr r0, [r2, r1, lsl #2] @ r0<- resolved InstField ptr cmp r0, #0 @ is resolved entry null? bne .L${opcode}_finish @ no, already resolved 8: ldr r2, [rSELF, #offThread_method] @ r2<- current method EXPORT_PC() @ resolve() could throw ldr r0, [r2, #offMethod_clazz] @ r0<- method->clazz bl dvmResolveInstField @ r0<- resolved InstField ptr cmp r0, #0 @ success? bne .L${opcode}_finish @ yes, finish up b common_exceptionThrown %break /* * Currently: * r0 holds resolved field * r9 holds object */ .L${opcode}_finish: @bl common_squeak${sqnum} mov r1, rINST, lsr #8 @ r1<- A+ ldr r3, [r0, #offInstField_byteOffset] @ r3<- byte offset of field and r1, r1, #15 @ r1<- A cmp r9, #0 @ check object for null GET_VREG(r0, r1) @ r0<- fp[A] ldr r2, [rSELF, #offThread_cardTable] @ r2<- card table base beq common_errNullObject @ object was null FETCH_ADVANCE_INST(2) @ advance rPC, load rINST GET_INST_OPCODE(ip) @ extract opcode from rINST $prebarrier @ releasing store str r0, [r9, r3] @ obj.field (32 bits)<- r0 $postbarrier cmp r0, #0 @ stored a null reference? strneb r2, [r2, r9, lsr #GC_CARD_SHIFT] @ mark card if not GOTO_OPCODE(ip) @ jump to next instruction