1 /*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef SIMPLE_PERF_PERF_REGS_H_
18 #define SIMPLE_PERF_PERF_REGS_H_
19
20 #if defined(USE_BIONIC_UAPI_HEADERS)
21 #include <uapi/asm-x86/asm/perf_regs.h>
22 #include <uapi/asm-arm/asm/perf_regs.h>
23 #define perf_event_arm_regs perf_event_arm64_regs
24 #include <uapi/asm-arm64/asm/perf_regs.h>
25 #else
26 #include <asm-x86/asm/perf_regs.h>
27 #include <asm-arm/asm/perf_regs.h>
28 #define perf_event_arm_regs perf_event_arm64_regs
29 #include <asm-arm64/asm/perf_regs.h>
30 #endif
31
32 #include <stdint.h>
33 #include <string>
34 #include <vector>
35
36 #include "perf_event.h"
37
38 enum ArchType {
39 ARCH_X86_32,
40 ARCH_X86_64,
41 ARCH_ARM,
42 ARCH_ARM64,
43 ARCH_UNSUPPORTED,
44 };
45
GetBuildArch()46 constexpr ArchType GetBuildArch() {
47 #if defined(__i386__)
48 return ARCH_X86_32;
49 #elif defined(__x86_64__)
50 return ARCH_X86_64;
51 #elif defined(__aarch64__)
52 return ARCH_ARM64;
53 #elif defined(__arm__)
54 return ARCH_ARM;
55 #else
56 return ARCH_UNSUPPORTED;
57 #endif
58 }
59
60 ArchType GetArchType(const std::string& arch);
61 ArchType GetArchForAbi(ArchType machine_arch, int abi);
62 std::string GetArchString(ArchType arch);
63 bool IsArchTheSame(ArchType arch1, ArchType arch2, bool strict_check);
64 uint64_t GetSupportedRegMask(ArchType arch);
65 std::string GetRegName(size_t regno, ArchType arch);
66
67 class ScopedCurrentArch {
68 public:
ScopedCurrentArch(ArchType arch)69 explicit ScopedCurrentArch(ArchType arch) : saved_arch(current_arch) {
70 current_arch = arch;
71 current_arch32 = GetArchForAbi(arch, PERF_SAMPLE_REGS_ABI_32);
72 }
~ScopedCurrentArch()73 ~ScopedCurrentArch() {
74 current_arch = saved_arch;
75 current_arch32 = GetArchForAbi(saved_arch, PERF_SAMPLE_REGS_ABI_32);
76 }
GetCurrentArch()77 static ArchType GetCurrentArch() {
78 return current_arch;
79 }
GetCurrentArch32()80 static ArchType GetCurrentArch32() {
81 return current_arch32;
82 }
83
84 private:
85 ArchType saved_arch;
86 static ArchType current_arch;
87 static ArchType current_arch32;
88 };
89
90 struct RegSet {
91 uint64_t valid_mask;
92 uint64_t data[64];
93 };
94
95 RegSet CreateRegSet(int abi, uint64_t valid_mask, const uint64_t* valid_regs);
96
97 bool GetRegValue(const RegSet& regs, size_t regno, uint64_t* value);
98 bool GetSpRegValue(const RegSet& regs, ArchType arch, uint64_t* value);
99
100 #endif // SIMPLE_PERF_PERF_REGS_H_
101