1/*
2 * Copyright © 2022 Google, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24#ifndef FREEDRENO_COMMON_H_
25#define FREEDRENO_COMMON_H_
26
27
28/**
29 * Helper macro to get around c++ being cranky about an enum that is a bitmask
30 */
31#ifdef __cplusplus
32#define or_mask(d, mask)                                                       \
33   do {                                                                        \
34      decltype(mask) _d = (d);                                                 \
35      d = (decltype(mask))(_d | (mask));                                       \
36   } while (0)
37#else
38#define or_mask(d, mask)                                                       \
39   do {                                                                        \
40      d |= (mask);                                                             \
41   } while (0)
42#endif
43
44/*
45 * swap - swap value of @a and @b
46 */
47#define swap(a, b)                                                             \
48   do {                                                                        \
49      __typeof(a) __tmp = (a);                                                 \
50      (a) = (b);                                                               \
51      (b) = __tmp;                                                             \
52   } while (0)
53
54/* for conditionally setting boolean flag(s): */
55#define COND(bool, val) ((bool) ? (val) : 0)
56
57#define BIT(bit) BITFIELD_BIT(bit)
58
59#endif /* FREEDRENO_COMMON_H_ */
60