1 %verify "executed" 2 %verify "null object" 3 %verify "field already resolved" 4 %verify "field not yet resolved" 5 %verify "field cannot be resolved" 6 /* 7 * 64-bit instance field get. 8 * 9 */ 10 /* op vA, vB, field@CCCC */ 11 GET_GLUE(%ecx) 12 SPILL(rIBASE) # need another reg 13 movzwl 2(rPC),rIBASE # rIBASE<- 0000CCCC 14 movl offGlue_methodClassDex(%ecx),%eax # eax<- DvmDex 15 movzbl rINST_HI,%ecx # ecx<- BA 16 sarl $$4,%ecx # ecx<- B 17 movl offDvmDex_pResFields(%eax),%eax # eax<- pDvmDex->pResFields 18 movzbl rINST_HI,rINST_FULL # rINST_FULL<- BA 19 andb $$0xf,rINST_LO # rINST_FULL<- A 20 GET_VREG(%ecx,%ecx) # ecx<- fp[B], the object ptr 21 movl (%eax,rIBASE,4),%eax # resolved entry 22 testl %eax,%eax # is resolved entry null? 23 jne .L${opcode}_finish # no, already resolved 24 movl rIBASE,OUT_ARG1(%esp) # needed by dvmResolveInstField 25 GET_GLUE(rIBASE) 26 jmp .L${opcode}_resolve 27 %break 28 29 30 .L${opcode}_resolve: 31 EXPORT_PC() 32 SPILL(rPC) 33 movl offGlue_method(rIBASE),rPC # rPC<- current method 34 UNSPILL(rIBASE) 35 movl offMethod_clazz(rPC),rPC # rPC<- method->clazz 36 SPILL_TMP(%ecx) # save object pointer across call 37 movl rPC,OUT_ARG0(%esp) # pass in method->clazz 38 call dvmResolveInstField # ... to dvmResolveInstField 39 UNSPILL_TMP(%ecx) 40 UNSPILL(rPC) 41 testl %eax,%eax # ... which returns InstrField ptr 42 jne .L${opcode}_finish 43 jmp common_exceptionThrown 44 45 .L${opcode}_finish: 46 /* 47 * Currently: 48 * eax holds resolved field 49 * ecx holds object 50 * rIBASE is scratch, but needs to be unspilled 51 * rINST_FULL holds A 52 */ 53 movl offInstField_byteOffset(%eax),%eax # eax<- byte offset of field 54 UNSPILL(rIBASE) 55 testl %ecx,%ecx # object null? 56 je common_errNullObject # object was null 57 leal (%ecx,%eax,1),%eax # eax<- address of field 58 movl (%eax),%ecx # ecx<- lsw 59 movl 4(%eax),%eax # eax<- msw 60 SET_VREG_WORD(%ecx,rINST_FULL,0) 61 SET_VREG_WORD(%eax,rINST_FULL,1) 62 FETCH_INST_WORD(2) 63 ADVANCE_PC(2) 64 GOTO_NEXT 65
