%default { "sqnum":"0" } %verify "executed" %verify "null object" %verify "field already resolved" %verify "field not yet resolved" %verify "field cannot be resolved" /* * Object field put. * * for: iput-object */ /* op vA, vB, field@CCCC */ movl rSELF,%ecx SPILL(rIBASE) movzwl 2(rPC),rIBASE # rIBASE<- 0000CCCC movl offThread_methodClassDex(%ecx),%eax # eax<- DvmDex movzbl rINSTbl,%ecx # ecx<- BA sarl $$4,%ecx # ecx<- B movl offDvmDex_pResFields(%eax),%eax # eax<- pDvmDex->pResFields andb $$0xf,rINSTbl # rINST<- A GET_VREG_R %ecx %ecx # ecx<- fp[B], the object ptr movl (%eax,rIBASE,4),%eax # resolved entry testl %eax,%eax # is resolved entry null? jne .L${opcode}_finish # no, already resolved movl rIBASE,OUT_ARG1(%esp) movl rSELF,rIBASE EXPORT_PC movl offThread_method(rIBASE),rIBASE # rIBASE<- current method movl offMethod_clazz(rIBASE),rIBASE # rIBASE<- method->clazz SPILL_TMP1(%ecx) # save obj pointer across call movl rIBASE,OUT_ARG0(%esp) # pass in method->clazz call dvmResolveInstField # ... to dvmResolveInstField UNSPILL_TMP1(%ecx) testl %eax,%eax # returns InstrField ptr jne .L${opcode}_finish jmp common_exceptionThrown .L${opcode}_finish: /* * Currently: * eax holds resolved field * ecx holds object * rIBASE is scratch, but needs to be unspilled * rINST holds A */ GET_VREG_R rINST rINST # rINST<- v[A] movl offInstField_byteOffset(%eax),%eax # eax<- byte offset of field testl %ecx,%ecx # object null? je common_errNullObject # object was null movl rINST,(%ecx,%eax) # obj.field <- v[A](8/16/32 bits) movl rSELF,%eax testl rINST,rINST # stored a NULL? movl offThread_cardTable(%eax),%eax # get card table base je 1f # skip card mark if null store shrl $$GC_CARD_SHIFT,%ecx # object head to card number movb %al,(%eax,%ecx) # mark card using object head 1: UNSPILL(rIBASE) FETCH_INST_OPCODE 2 %ecx ADVANCE_PC 2 GOTO_NEXT_R %ecx