cpu-features.h revision 1e7bf8805bd030c19924a5306837ecd72c295751 
1/*
2 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11// You can download Android source at
12// http://source.android.com/source/downloading.html
13// Original files are in ndk/sources/android/cpufeatures
14// Revision is Change-Id: I9a0629efba36a6023f05e5f092e7addcc1b7d2a9
15
16#ifndef CPU_FEATURES_H
17#define CPU_FEATURES_H
18
19#include <sys/cdefs.h>
20#include <stdint.h>
21
22__BEGIN_DECLS
23
24typedef enum {
25    ANDROID_CPU_FAMILY_UNKNOWN = 0,
26    ANDROID_CPU_FAMILY_ARM,
27    ANDROID_CPU_FAMILY_X86,
28
29    ANDROID_CPU_FAMILY_MAX  /* do not remove */
30
31} AndroidCpuFamily;
32
33/* Return family of the device's CPU */
34extern AndroidCpuFamily   android_getCpuFamily(void);
35
36enum {
37    ANDROID_CPU_ARM_FEATURE_ARMv7       = (1 << 0),
38    ANDROID_CPU_ARM_FEATURE_VFPv3       = (1 << 1),
39    ANDROID_CPU_ARM_FEATURE_NEON        = (1 << 2),
40    ANDROID_CPU_ARM_FEATURE_LDREX_STREX = (1 << 3),
41};
42
43enum {
44    ANDROID_CPU_X86_FEATURE_SSSE3  = (1 << 0),
45    ANDROID_CPU_X86_FEATURE_POPCNT = (1 << 1),
46    ANDROID_CPU_X86_FEATURE_MOVBE  = (1 << 2),
47};
48
49extern uint64_t    android_getCpuFeatures(void);
50
51/* Return the number of CPU cores detected on this device. */
52extern int         android_getCpuCount(void);
53
54__END_DECLS
55
56#endif /* CPU_FEATURES_H */
57