| /* 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_RSUB_INT.S | |
| * | |
| * Code: 32-bit reverse-subtraction. Uses no substitutions. | |
| * | |
| * For: rsub-int | |
| * | |
| * Description: Perform a reverse subtraction on a register and a | |
| * signed extended 16-bit literal value and store the | |
| * result in a destination register. | |
| * | |
| * Format: B|A|op CCCC (22s) | |
| * | |
| * Syntax: op vA, vB, #+CCCC | |
| */ | |
| movl rINST, %ecx # %ecx<- BA | |
| shr $$4, %ecx # %ecx<- B | |
| andl $$15, rINST # rINST<- A | |
| FETCHs 1, %edx # %edx<- +CCCC, sign-extended literal | |
| GET_VREG %ecx # %ecx<- vB | |
| subl %ecx, %edx # %edx<- +CCCC sub vB | |
| SET_VREG %edx, rINST # vA<- %edx; result | |
| FINISH 2 # jump to next instruction |