1 %default { "load":"lw", "shift":"2", "data_offset":"MIRROR_INT_ARRAY_DATA_OFFSET" } 2 /* 3 * Array get, 32 bits or less. vAA <- vBB[vCC]. 4 * 5 * Note: using the usual FETCH/and/shift stuff, this fits in exactly 17 6 * instructions. We use a pair of FETCH_Bs instead. 7 * 8 * for: aget, aget-boolean, aget-byte, aget-char, aget-short 9 * 10 * NOTE: assumes data offset for arrays is the same for all non-wide types. 11 * If this changes, specialize. 12 */ 13 /* op vAA, vBB, vCC */ 14 FETCH_B(a2, 1, 0) # a2 <- BB 15 GET_OPA(rOBJ) # rOBJ <- AA 16 FETCH_B(a3, 1, 1) # a3 <- CC 17 GET_VREG(a0, a2) # a0 <- vBB (array object) 18 GET_VREG(a1, a3) # a1 <- vCC (requested index) 19 # null array object? 20 beqz a0, common_errNullObject # yes, bail 21 LOAD_base_offMirrorArray_length(a3, a0) # a3 <- arrayObj->length 22 .if $shift 23 EASN(a0, a0, a1, $shift) # a0 <- arrayObj + index*width 24 .else 25 addu a0, a0, a1 26 .endif 27 # a1 >= a3; compare unsigned index 28 bgeu a1, a3, common_errArrayIndex # index >= length, bail 29 FETCH_ADVANCE_INST(2) # advance rPC, load rINST 30 $load a2, $data_offset(a0) # a2 <- vBB[vCC] 31 GET_INST_OPCODE(t0) # extract opcode from rINST 32 SET_VREG_GOTO(a2, rOBJ, t0) # vAA <- a2 33
