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cpuinfo_arm.h
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1// Copyright 2017 Google LLC
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#ifndef CPU_FEATURES_INCLUDE_CPUINFO_ARM_H_
16#define CPU_FEATURES_INCLUDE_CPUINFO_ARM_H_
17
18#include <stdint.h> // uint32_t
19
21#include "cpu_features_macros.h"
22
24
25typedef struct {
26 int swp : 1; // SWP instruction (atomic read-modify-write)
27 int half : 1; // Half-word loads and stores
28 int thumb : 1; // Thumb (16-bit instruction set)
29 int _26bit : 1; // "26 Bit" Model (Processor status register folded into
30 // program counter)
31 int fastmult : 1; // 32x32->64-bit multiplication
32 int fpa : 1; // Floating point accelerator
33 int vfp : 1; // Vector Floating Point.
34 int edsp : 1; // DSP extensions (the 'e' variant of the ARM9 CPUs, and all
35 // others above)
36 int java : 1; // Jazelle (Java bytecode accelerator)
37 int iwmmxt : 1; // Intel Wireless MMX Technology.
38 int crunch : 1; // MaverickCrunch coprocessor
39 int thumbee : 1; // ThumbEE
40 int neon : 1; // Advanced SIMD.
41 int vfpv3 : 1; // VFP version 3
42 int vfpv3d16 : 1; // VFP version 3 with 16 D-registers
43 int tls : 1; // TLS register
44 int vfpv4 : 1; // VFP version 4 with fast context switching
45 int idiva : 1; // SDIV and UDIV hardware division in ARM mode.
46 int idivt : 1; // SDIV and UDIV hardware division in Thumb mode.
47 int vfpd32 : 1; // VFP with 32 D-registers
48 int lpae : 1; // Large Physical Address Extension (>4GB physical memory on
49 // 32-bit architecture)
50 int evtstrm : 1; // kernel event stream using generic architected timer
51 int aes : 1; // Hardware-accelerated Advanced Encryption Standard.
52 int pmull : 1; // Polynomial multiply long.
53 int sha1 : 1; // Hardware-accelerated SHA1.
54 int sha2 : 1; // Hardware-accelerated SHA2-256.
55 int crc32 : 1; // Hardware-accelerated CRC-32.
56
57 // Make sure to update ArmFeaturesEnum below if you add a field here.
59
60typedef struct {
65 int part;
67} ArmInfo;
68
69// TODO(user): Add macros to know which features are present at compile
70// time.
71
73
74// Compute CpuId from ArmInfo.
75uint32_t GetArmCpuId(const ArmInfo* const info);
76
77////////////////////////////////////////////////////////////////////////////////
78// Introspection functions
79
80typedef enum {
110
112
114
116
117#if !defined(CPU_FEATURES_ARCH_ARM)
118#error "Including cpuinfo_arm.h from a non-arm target."
119#endif
120
121#endif // CPU_FEATURES_INCLUDE_CPUINFO_ARM_H_
#define CPU_FEATURES_START_CPP_NAMESPACE
Definition cpu_features_macros.h:127
#define CPU_FEATURES_END_CPP_NAMESPACE
Definition cpu_features_macros.h:128
const char * GetArmFeaturesEnumName(ArmFeaturesEnum)
ArmFeaturesEnum
Definition cpuinfo_arm.h:80
@ ARM_VFPV3
Definition cpuinfo_arm.h:94
@ ARM_SWP
Definition cpuinfo_arm.h:81
@ ARM_VFPV3D16
Definition cpuinfo_arm.h:95
@ ARM_LAST_
Definition cpuinfo_arm.h:108
@ ARM_SHA2
Definition cpuinfo_arm.h:106
@ ARM_IWMMXT
Definition cpuinfo_arm.h:90
@ ARM_EVTSTRM
Definition cpuinfo_arm.h:102
@ ARM_LPAE
Definition cpuinfo_arm.h:101
@ ARM_FASTMULT
Definition cpuinfo_arm.h:85
@ ARM_EDSP
Definition cpuinfo_arm.h:88
@ ARM_FPA
Definition cpuinfo_arm.h:86
@ ARM_VFPD32
Definition cpuinfo_arm.h:100
@ ARM_PMULL
Definition cpuinfo_arm.h:104
@ ARM_JAVA
Definition cpuinfo_arm.h:89
@ ARM_SHA1
Definition cpuinfo_arm.h:105
@ ARM_VFPV4
Definition cpuinfo_arm.h:97
@ ARM_THUMBEE
Definition cpuinfo_arm.h:92
@ ARM_IDIVA
Definition cpuinfo_arm.h:98
@ ARM_CRUNCH
Definition cpuinfo_arm.h:91
@ ARM_THUMB
Definition cpuinfo_arm.h:83
@ ARM_HALF
Definition cpuinfo_arm.h:82
@ ARM_IDIVT
Definition cpuinfo_arm.h:99
@ ARM_26BIT
Definition cpuinfo_arm.h:84
@ ARM_NEON
Definition cpuinfo_arm.h:93
@ ARM_TLS
Definition cpuinfo_arm.h:96
@ ARM_AES
Definition cpuinfo_arm.h:103
@ ARM_VFP
Definition cpuinfo_arm.h:87
@ ARM_CRC32
Definition cpuinfo_arm.h:107
int GetArmFeaturesEnumValue(const ArmFeatures *features, ArmFeaturesEnum value)
ArmInfo GetArmInfo(void)
uint32_t GetArmCpuId(const ArmInfo *const info)
Definition cpuinfo_arm.h:25
int crunch
Definition cpuinfo_arm.h:38
int sha1
Definition cpuinfo_arm.h:53
int thumb
Definition cpuinfo_arm.h:28
int evtstrm
Definition cpuinfo_arm.h:50
int vfpv3d16
Definition cpuinfo_arm.h:42
int idiva
Definition cpuinfo_arm.h:45
int fastmult
Definition cpuinfo_arm.h:31
int java
Definition cpuinfo_arm.h:36
int vfpv4
Definition cpuinfo_arm.h:44
int sha2
Definition cpuinfo_arm.h:54
int edsp
Definition cpuinfo_arm.h:34
int aes
Definition cpuinfo_arm.h:51
int crc32
Definition cpuinfo_arm.h:55
int vfpv3
Definition cpuinfo_arm.h:41
int idivt
Definition cpuinfo_arm.h:46
int _26bit
Definition cpuinfo_arm.h:29
int half
Definition cpuinfo_arm.h:27
int thumbee
Definition cpuinfo_arm.h:39
int vfp
Definition cpuinfo_arm.h:33
int fpa
Definition cpuinfo_arm.h:32
int vfpd32
Definition cpuinfo_arm.h:47
int pmull
Definition cpuinfo_arm.h:52
int iwmmxt
Definition cpuinfo_arm.h:37
int lpae
Definition cpuinfo_arm.h:48
int swp
Definition cpuinfo_arm.h:26
int neon
Definition cpuinfo_arm.h:40
int tls
Definition cpuinfo_arm.h:43
Definition cpuinfo_arm.h:60
int part
Definition cpuinfo_arm.h:65
int architecture
Definition cpuinfo_arm.h:63
int variant
Definition cpuinfo_arm.h:64
int implementer
Definition cpuinfo_arm.h:62
int revision
Definition cpuinfo_arm.h:66
ArmFeatures features
Definition cpuinfo_arm.h:61