| /* Copyright (C) 2008 The Android Open Source Project | |
| * | |
| * Licensed under the Apache License, Version 2.0 (the "License"); | |
| * you may not use this file except in compliance with the License. | |
| * You may obtain a copy of the License at | |
| * | |
| * http://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software | |
| * distributed under the License is distributed on an "AS IS" BASIS, | |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| * See the License for the specific language governing permissions and | |
| * limitations under the License. | |
| */ | |
| /* | |
| * File: OP_ARRAY_LENGTH.S | |
| * | |
| * Code: 32-bit array length operation. | |
| * | |
| * For: array-length | |
| * | |
| * Description: Store the length of the indicated array in the given | |
| * destination register. vB <- offArrayObject_length(vA) | |
| * | |
| * Format: B|A|op (12x) | |
| * | |
| * Syntax: op vA, vB | |
| */ | |
| movl rINST, %eax # %eax<- BA | |
| shr $$4, %eax # %eax<- B | |
| andl $$15, rINST # rINST<- A | |
| GET_VREG %eax # %eax<- vB | |
| cmp $$0, %eax # check for null array object | |
| je common_errNullObject # handle null array object | |
| FFETCH_ADV 1, %edx # %edx<- next instruction hi; fetch, advance | |
| movl offArrayObject_length(%eax), %eax # %eax<- array length | |
| movl %eax, (rFP, rINST, 4) # vA<- %eax; array length | |
| FGETOP_JMP 1, %edx # jump to next instruction; getop, jmp |