mirror of
https://github.com/chromium/crashpad.git
synced 2024-12-31 01:43:03 +08:00
041a50d75c
Dynamic linkers use `struct r_debug` and `struct link_map` (defined in `<link.h>`) to communicate lists of loaded modules to debuggers. Bug: crashpad:30 Change-Id: Id903a1c199288dd85c34e38710cdb4c6b5fedb5b Reviewed-on: https://chromium-review.googlesource.com/534853 Reviewed-by: Mark Mentovai <mark@chromium.org>
89 lines
2.9 KiB
C++
89 lines
2.9 KiB
C++
// Copyright 2017 The Crashpad Authors. All rights reserved.
|
|
//
|
|
// 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 CRASHPAD_SNAPSHOT_LINUX_DEBUG_RENDEZVOUS_H_
|
|
#define CRASHPAD_SNAPSHOT_LINUX_DEBUG_RENDEZVOUS_H_
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "base/macros.h"
|
|
#include "util/linux/address_types.h"
|
|
#include "util/linux/process_memory_range.h"
|
|
#include "util/misc/initialization_state_dcheck.h"
|
|
|
|
namespace crashpad {
|
|
|
|
//! \brief Reads an `r_debug` struct defined in `<link.h>` via
|
|
//! ProcessMemoryRange.
|
|
class DebugRendezvous {
|
|
public:
|
|
//! \brief An entry in the dynamic linker's list of loaded objects.
|
|
//!
|
|
//! All of these values should be checked before use. Whether and how they are
|
|
//! populated may vary by dynamic linker.
|
|
struct LinkEntry {
|
|
LinkEntry();
|
|
|
|
//! \brief A filename identifying the object.
|
|
std::string name;
|
|
|
|
//! \brief The difference between the preferred load address in the ELF file
|
|
//! and the actual loaded address in memory.
|
|
LinuxVMOffset load_bias;
|
|
|
|
//! \brief The address of the dynamic array for this object.
|
|
LinuxVMAddress dynamic_array;
|
|
};
|
|
|
|
DebugRendezvous();
|
|
~DebugRendezvous();
|
|
|
|
//! \brief Initializes this object by reading an `r_debug` struct from a
|
|
//! target process.
|
|
//!
|
|
//! This method must be called successfully prior to calling any other method
|
|
//! in this class.
|
|
//!
|
|
//! \param[in] memory A memory reader for the remote process.
|
|
//! \param[in] address The address of an `r_debug` struct in the remote
|
|
//! process.
|
|
//! \return `true` on success. `false` on failure with a message logged.
|
|
bool Initialize(const ProcessMemoryRange& memory, LinuxVMAddress address);
|
|
|
|
//! \brief Returns the LinkEntry for the main executable.
|
|
const LinkEntry* Executable() const;
|
|
|
|
//! \brief Returns a vector of modules found in the link map.
|
|
//!
|
|
//! This list excludes the entry for the executable and may include entries
|
|
//! for the VDSO and loader.
|
|
const std::vector<LinkEntry>& Modules() const;
|
|
|
|
private:
|
|
template <typename Traits>
|
|
bool InitializeSpecific(const ProcessMemoryRange& memory,
|
|
LinuxVMAddress address);
|
|
|
|
std::vector<LinkEntry> modules_;
|
|
LinkEntry executable_;
|
|
InitializationStateDcheck initialized_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(DebugRendezvous);
|
|
};
|
|
|
|
} // namespace crashpad
|
|
|
|
#endif // CRASHPAD_SNAPSHOT_LINUX_DEBUG_RENDEZVOUS_H_
|