1 /* Copyright (C) 2008 The Android Open Source Project 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 /* 17 * File: OP_RSUB_INT.S 18 * 19 * Code: 32-bit reverse-subtraction. Uses no substitutions. 20 * 21 * For: rsub-int 22 * 23 * Description: Perform a reverse subtraction on a register and a 24 * signed extended 16-bit literal value and store the 25 * result in a destination register. 26 * 27 * Format: B|A|op CCCC (22s) 28 * 29 * Syntax: op vA, vB, #+CCCC 30 */ 31 32 movl rINST, %ecx # %ecx<- BA 33 shr $$4, %ecx # %ecx<- B 34 andl $$15, rINST # rINST<- A 35 FETCHs 1, %edx # %edx<- +CCCC, sign-extended literal 36 GET_VREG %ecx # %ecx<- vB 37 subl %ecx, %edx # %edx<- +CCCC sub vB 38 SET_VREG %edx, rINST # vA<- %edx; result 39 FINISH 2 # jump to next instruction 40
