| /* 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_IPUT_QUICK.S |
| * Code: Optimization for iput |
| * |
| * For: iput-quick |
| * |
| * Format: B|A|op CCCC (22c) |
| * |
| * Syntax: op vA, vB, offset@CCCC |
| */ |
| |
| movl rINST, %eax # %eax<- BA |
| shr $$4, %eax # %eax<- B |
| and $$15, rINST # rINST<- A |
| GET_VREG %eax # %eax<- vB; object to operate on |
| FETCH 1, %ecx # %ecx<- CCCC; field byte offset |
| cmp $$0, %eax # check if object is null |
| je common_errNullObject # handle null object |
| FFETCH_ADV 2, %edx # %edx<- next instruction hi; fetch, advance |
| GET_VREG rINST # rINST<- vA |
| movl rINST, (%eax, %ecx) # object field<- vA |
| testl rINST, rINST # did we write a null object |
| je 1f |
| movl rGLUE, %ecx # get glue |
| movl offGlue_cardTable(%ecx), %ecx # get card table base |
| shrl $$GC_CARD_SHIFT, %eax # get gc card index |
| movb %cl, (%eax, %ecx) # mark gc card in table |
| 1: |
| FGETOP_JMP 2, %edx # jump to next instruction; getop, jmp |