op_aget_wide.S revision 00b53b7f3f9ce5996b767b52c28dd846f47a723c
100b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze /* 200b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze * Array get, 64 bits. vAA <- vBB[vCC]. 300b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze * 400b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze */ 500b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze /* aget-wide vAA, vBB, vCC */ 600b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze lbu a2, 2(rPC) # a2 <- BB 700b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze lbu a3, 3(rPC) # a3 <- CC 800b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze srl a4, rINST, 8 # a4 <- AA 900b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GET_VREG_U a0, a2 # a0 <- vBB (array object) 1000b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GET_VREG a1, a3 # a1 <- vCC (requested index) 1100b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze beqz a0, common_errNullObject # bail if null array object 1200b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze lw a3, MIRROR_ARRAY_LENGTH_OFFSET(a0) # a3 <- arrayObj->length 1300b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze dlsa a0, a1, a0, 3 # a0 <- arrayObj + index*width 1400b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze bgeu a1, a3, common_errArrayIndex # unsigned compare: index >= length, bail 1500b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze FETCH_ADVANCE_INST 2 # advance rPC, load rINST 1600b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze lw a2, MIRROR_WIDE_ARRAY_DATA_OFFSET(a0) 1700b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze lw a3, (MIRROR_WIDE_ARRAY_DATA_OFFSET+4)(a0) 1800b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze dinsu a2, a3, 32, 32 # a2 <- vBB[vCC] 1900b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GET_INST_OPCODE v0 # extract opcode from rINST 2000b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze SET_VREG_WIDE a2, a4 # vAA <- a2 2100b53b7f3f9ce5996b767b52c28dd846f47a723cAlexey Frunze GOTO_OPCODE v0 # jump to next instruction 22