1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
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
16 #include "dfx_regs.h"
17
18 #include <cstdio>
19 #include <cstdlib>
20 #include "dfx_define.h"
21 #include "dfx_log.h"
22 #include "dfx_regs_define.h"
23 #include "string_util.h"
24 #include "unwinder_define.h"
25
26 namespace OHOS {
27 namespace HiviewDFX {
Create()28 std::shared_ptr<DfxRegs> DfxRegs::Create()
29 {
30 std::shared_ptr<DfxRegs> dfxregs;
31 #if defined(__arm__)
32 dfxregs = std::make_shared<DfxRegsArm>();
33 #elif defined(__aarch64__)
34 dfxregs = std::make_shared<DfxRegsArm64>();
35 #elif defined(__x86_64__)
36 dfxregs = std::make_shared<DfxRegsX86_64>();
37 #else
38 #error "Unsupported architecture"
39 #endif
40 return dfxregs;
41 }
42
CreateFromContext(const ucontext_t & context)43 std::shared_ptr<DfxRegs> DfxRegs::CreateFromContext(const ucontext_t &context)
44 {
45 std::shared_ptr<DfxRegs> dfxregs;
46 #if defined(__arm__)
47 dfxregs = std::make_shared<DfxRegsArm>(context);
48 #elif defined(__aarch64__)
49 dfxregs = std::make_shared<DfxRegsArm64>(context);
50 #elif defined(__x86_64__)
51 dfxregs = std::make_shared<DfxRegsX86_64>(context);
52 #else
53 #error "Unsupported architecture"
54 #endif
55 return dfxregs;
56 }
57
GetRegsData() const58 std::vector<uintptr_t> DfxRegs::GetRegsData() const
59 {
60 return regsData_;
61 }
62
SetRegsData(const std::vector<uintptr_t> & regs)63 void DfxRegs::SetRegsData(const std::vector<uintptr_t>& regs)
64 {
65 regsData_ = regs;
66 #if defined(__arm__)
67 fp_ = regs[REG_ARM_R11];
68 sp_ = regs[REG_ARM_R13];
69 lr_ = regs[REG_ARM_R14];
70 pc_ = regs[REG_ARM_R15];
71 #elif defined(__aarch64__)
72 fp_ = regs[REG_AARCH64_FP];
73 sp_ = regs[REG_AARCH64_SP];
74 lr_ = regs[REG_AARCH64_X30];
75 pc_ = regs[REG_AARCH64_PC];
76 #elif defined(__x86_64__)
77 sp_ = regs[REG_X86_64_SP];
78 pc_ = regs[REG_X86_64_PC];
79 #else
80 #error "Unsupported architecture"
81 #endif
82 DFXLOG_INFO("%s", PrintSpecialRegs().c_str());
83 }
84
GetSpecialRegisterName(uintptr_t val) const85 std::string DfxRegs::GetSpecialRegisterName(uintptr_t val) const
86 {
87 if (val == pc_) {
88 return "pc";
89 } else if (val == lr_) {
90 return "lr";
91 } else if (val == sp_) {
92 return "sp";
93 } else if (val == fp_) {
94 return "fp";
95 }
96 return "";
97 }
98
PrintSpecialRegs() const99 std::string DfxRegs::PrintSpecialRegs() const
100 {
101 char buf[REGS_PRINT_LEN_SPECIAL] = {0};
102 #ifdef __LP64__
103 BufferPrintf(buf, sizeof(buf), "fp:%016lx sp:%016lx lr:%016lx pc:%016lx\n", fp_, sp_, lr_, pc_);
104 #else
105 BufferPrintf(buf, sizeof(buf), "fp:%08x sp:%08x lr:%08x pc:%08x\n", fp_, sp_, lr_, pc_);
106 #endif
107 return std::string(buf);
108 }
109 } // namespace HiviewDFX
110 } // namespace OHOS
111