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: binopS2addr.S 18 * 19 * Code: Generic 32-bit "/2addr" binary operation. Provides an 20 * "instr" line to specify an instruction that performs 21 * "%edx = %edx op %cl". 22 * 23 * For: shl-int/2addr, shr-int/2addr, ushr-int/2addr 24 * 25 * Description: Perform a binary operation on two sources registers 26 * and store the result in the first source register 27 * 28 * Format: B|A|op (12x) 29 * 30 * Syntax: op vA, vB 31 */ 32 33 movl rINST, %ecx # %ecx<- BA 34 shr $$4, %ecx # %ecx<- B 35 andl $$15, rINST # rINST<- A 36 movl rINST, %edx # %edx<- A 37 FFETCH_ADV 1, %eax # %ecx<- next instruction hi; fetch, advance 38 GET_VREG %ecx # %ecx<- vB 39 GET_VREG %edx # %edx<- vA 40 $instr # %edx<- vA op vB 41 SET_VREG %edx, rINST # vAA<- %edx; result 42 FGETOP_JMP 1, %eax # jump to next instruction; getop, jmp 43