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
44