Commit | Line | Data |
---|---|---|
d42e7319 JB |
1 | /* |
2 | * Copyright (C) 2013 Jolla Ltd. | |
3 | * Contact: Thomas Perl <thomas.perl@jollamobile.com> | |
4 | * | |
5 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
6 | * you may not use this file except in compliance with the License. | |
7 | * You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | ||
18 | #ifndef HYBRIS_FLOATING_POINT_ABI_H_ | |
19 | #define HYBRIS_FLOATING_POINT_ABI_H_ | |
20 | ||
21 | /** | |
22 | * Make sure to use FP_ATTRIB on all functions that are loaded from | |
23 | * Android (bionic libc) libraries to make sure floating point arguments | |
24 | * are passed the right way. | |
25 | * | |
26 | * See: http://wiki.debian.org/ArmHardFloatPort/VfpComparison | |
27 | * http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html | |
28 | * | |
29 | * It doesn't hurt to have it added for non-floating point arguments and | |
30 | * return types, even though it does not really have any effect. | |
31 | * | |
32 | * If you use the convenience macros in hybris/internal/binding.h, your | |
33 | * wrapper functions will automatically make use of this attribute. | |
34 | **/ | |
35 | ||
36 | #ifdef __ARM_PCS_VFP | |
37 | # define FP_ATTRIB __attribute__((pcs("aapcs"))) | |
38 | #else | |
39 | # define FP_ATTRIB | |
40 | #endif | |
41 | ||
42 | #endif /* HYBRIS_FLOATING_POINT_ABI_H_ */ |