You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.8 KiB
60 lines
1.8 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (C) 2020 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef SIMPLE_PERF_KALLSYMS_H_
|
||
|
|
#define SIMPLE_PERF_KALLSYMS_H_
|
||
|
|
|
||
|
|
#include <string>
|
||
|
|
|
||
|
|
#include "environment.h"
|
||
|
|
|
||
|
|
namespace simpleperf {
|
||
|
|
|
||
|
|
struct KernelSymbol {
|
||
|
|
uint64_t addr;
|
||
|
|
char type;
|
||
|
|
const char* name;
|
||
|
|
const char* module; // If nullptr, the symbol is not in a kernel module.
|
||
|
|
};
|
||
|
|
|
||
|
|
// Parses symbol_data as the content of /proc/kallsyms, calling the callback for
|
||
|
|
// each symbol that is found. Stops the parsing if the callback returns true.
|
||
|
|
bool ProcessKernelSymbols(std::string& symbol_data,
|
||
|
|
const std::function<bool(const KernelSymbol&)>& callback);
|
||
|
|
|
||
|
|
#if defined(__linux__)
|
||
|
|
|
||
|
|
// Returns the list of currently loaded kernel modules.
|
||
|
|
std::vector<KernelMmap> GetLoadedModules();
|
||
|
|
|
||
|
|
// Returns the start address of the kernel. It uses /proc/kallsyms to find this
|
||
|
|
// address. Returns 0 if unknown.
|
||
|
|
uint64_t GetKernelStartAddress();
|
||
|
|
|
||
|
|
// Loads the /proc/kallsyms file, requesting access if required. The value of
|
||
|
|
// kptr_restrict might be modified during the process. Its original value will
|
||
|
|
// be restored. This usually requires root privileges.
|
||
|
|
bool LoadKernelSymbols(std::string* kallsyms);
|
||
|
|
|
||
|
|
// only for testing
|
||
|
|
void ResetKernelAddressWarning();
|
||
|
|
|
||
|
|
#endif // defined(__linux__)
|
||
|
|
|
||
|
|
} // namespace simpleperf
|
||
|
|
|
||
|
|
#endif // SIMPLE_PERF_KALLSYMS_H_
|