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: unop.S 18 * 19 * Code: Generic 32-bit unary operation. Provide an "instr" variable and a 20 * preinstr variable that together specify an instruction that 21 * performs, for example, "%ecx = op %edx". 22 * 23 * For: int-to-byte, int-to-char, int-to-short, neg-float, neg-int, not-int 24 * 25 * Description: Perform the identified unary operation on the source 26 * register, storing the result in the destination register 27 * 28 * Format: B|A|op (12x) 29 * 30 * Syntax: op vA, vB 31 */ 32 33 %default {"preinstr":"", "instr":""} 34 35 movl rINST, %ecx # %ecx<- BA+ 36 shr $$4, %ecx # %ecx<- B 37 and $$15, rINST # rINST<- A 38 FFETCH_ADV 1, %eax # %eax<- next instruction hi; fetch, advance 39 GET_VREG %ecx # %ecx<- vB 40 $preinstr # do operation part 1 41 $instr # do operation part 2 42 SET_VREG %ecx, rINST # vA<- result 43 FGETOP_JMP 1, %eax # jump to next instruction; getop, jmp
