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_USHR_LONG.S 18 * 19 * Code: Performs an unsigned shift right long operation. Uses no substitutions. 20 * 21 * For: ushr-long 22 * 23 * Description: Perform a binary shift operation using two source registers 24 * where one is the shift amount and the other is the value to shift. 25 * 26 * Format: AA|op CC|BB (23x) 27 * 28 * Syntax: op vAA, vBB, vCC 29 */ 30 31 FETCH_CC 1, %eax # %eax<- CC 32 FETCH_BB 1, %edx # %edx<- BB 33 movsd .LshiftMask, %xmm2 # %xmm2<- mask for the shift bits 34 movss (rFP, %eax, 4), %xmm0 # %xmm0<- vCC 35 pand %xmm2, %xmm0 # %xmm0<- masked shift bits 36 movsd (rFP, %edx, 4), %xmm1 # %xmm1<- vBB 37 psrlq %xmm0, %xmm1 # %xmm1<- shifted vBB 38 movsd %xmm1, (rFP, rINST, 4) # vAA<- shifted vBB 39 FINISH 2 # jump to next instruction 40