7937a36c8e
In order to support the offline unwinding properly, get rid of the usage of non-fixed type uintptr_t from all API calls. In addition, completely remove the old local and remote unwinding code that used libunwind. The next step will be to move the offline unwinding to the new unwinder. Bug: 65682279 Test: Ran unit tests for libbacktrace/debuggerd. Test: Ran debuggerd -b on a few arm and arm64 processes. Test: Ran crasher and crasher64 and verified tombstones look correct. Change-Id: Ib0c6cee3ad6785a102b74908a3d8e5e93e5c6b33
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/*
|
|
* Copyright (C) 2015 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 _LIBBACKTRACE_UNWIND_OFFLINE_H
|
|
#define _LIBBACKTRACE_UNWIND_OFFLINE_H
|
|
|
|
#include <libunwind.h>
|
|
#include <stdint.h>
|
|
#include <sys/types.h>
|
|
#include <ucontext.h>
|
|
|
|
#include <unordered_map>
|
|
#include <unordered_set>
|
|
|
|
#include <backtrace/Backtrace.h>
|
|
|
|
struct Space {
|
|
uint64_t start;
|
|
uint64_t end;
|
|
const uint8_t* data;
|
|
|
|
Space() { Clear(); }
|
|
|
|
void Clear();
|
|
size_t Read(uint64_t addr, uint8_t* buffer, size_t size);
|
|
};
|
|
|
|
struct DebugFrameInfo;
|
|
|
|
class BacktraceOffline : public Backtrace {
|
|
public:
|
|
BacktraceOffline(pid_t pid, pid_t tid, BacktraceMap* map, const backtrace_stackinfo_t& stack,
|
|
bool cache_file)
|
|
: Backtrace(pid, tid, map),
|
|
cache_file_(cache_file),
|
|
context_(nullptr),
|
|
is_debug_frame_used_(false) {
|
|
stack_space_.start = stack.start;
|
|
stack_space_.end = stack.end;
|
|
stack_space_.data = stack.data;
|
|
}
|
|
|
|
virtual ~BacktraceOffline() = default;
|
|
|
|
bool Unwind(size_t num_ignore_frames, ucontext_t* context) override;
|
|
|
|
bool ReadWord(uint64_t ptr, word_t* out_value) override;
|
|
|
|
size_t Read(uint64_t addr, uint8_t* buffer, size_t bytes) override;
|
|
|
|
bool FindProcInfo(unw_addr_space_t addr_space, uint64_t ip, unw_proc_info_t* proc_info,
|
|
int need_unwind_info);
|
|
|
|
bool ReadReg(size_t reg_index, uint64_t* value);
|
|
|
|
protected:
|
|
std::string GetFunctionNameRaw(uint64_t pc, uint64_t* offset) override;
|
|
DebugFrameInfo* GetDebugFrameInFile(const std::string& filename);
|
|
|
|
bool cache_file_;
|
|
ucontext_t* context_;
|
|
Space eh_frame_hdr_space_;
|
|
Space eh_frame_space_;
|
|
Space arm_extab_space_;
|
|
Space arm_exidx_space_;
|
|
Space stack_space_;
|
|
|
|
// is_debug_frame_used_ is to make sure we can try both .debug_frame and .ARM.exidx in
|
|
// FindProcInfo() on ARM. One example is EsxContext::Clear() in
|
|
// vendor/lib/egl/libGLESv2_adreno.so. EsxContext::Clear() appears in both .debug_frame and
|
|
// .ARM.exidx. However, libunwind fails to execute debug_frame instruction
|
|
// "DW_CFA_offset_extended: r265 at cfa-48". So we need to try .ARM.exidx to unwind that
|
|
// function.
|
|
bool is_debug_frame_used_;
|
|
};
|
|
|
|
#endif // _LIBBACKTRACE_BACKTRACE_OFFLINE_H
|