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: binopLit16.S 18 * 19 * Code: 32-bit "lit16" operation. Provides an "instr" line to 20 * specify an instruction that performs "%ecx = %ecx op %edx" 21 * 22 * 23 * For: add-int/lit16, and-int/lit16, mul-int/lit16, or-int/lit16 24 * xor-int/lit16 25 * 26 * Description: Perform a binary operation on a register and a 27 * sign extended 16-bit literal value and store the 28 * result in a destination register. 29 * 30 * Format: B|A|op CCCC (22s) 31 * 32 * Syntax: op vA, vB, #+CCCC 33 */ 34 35 movl rINST, %ecx # %ecx<- BA 36 shr $$4, %ecx # %ecx<- B 37 andl $$15, rINST # rINST<- A 38 FETCHs 1, %edx # %edx<- +CCCC, sign-extended literal 39 FFETCH_ADV 2, %eax # %eax<- next instruction hi; fetch, advance 40 GET_VREG %ecx # %ecx<- vB 41 $instr # %ecx<- vA op vB 42 SET_VREG %ecx, rINST # vA<- %ecx; result 43 FGETOP_JMP 2, %eax # jump to next instruction; getop, jmp
