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//===-- ThreadElfCore.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_THREADELFCORE_H
#define LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_THREADELFCORE_H
#include "Plugins/Process/elf-core/RegisterUtilities.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/DataExtractor.h"
#include "llvm/ADT/DenseMap.h"
#include <string>
struct compat_timeval {
alignas(8) uint64_t tv_sec;
alignas(8) uint64_t tv_usec;
};
// PRSTATUS structure's size differs based on architecture.
// This is the layout in the x86-64 arch.
// In the i386 case we parse it manually and fill it again
// in the same structure
// The gp registers are also a part of this struct, but they are handled
// separately
#undef si_signo
#undef si_code
#undef si_errno
struct ELFLinuxPrStatus {
int32_t si_signo;
int32_t si_code;
int32_t si_errno;
int16_t pr_cursig;
alignas(8) uint64_t pr_sigpend;
alignas(8) uint64_t pr_sighold;
uint32_t pr_pid;
uint32_t pr_ppid;
uint32_t pr_pgrp;
uint32_t pr_sid;
compat_timeval pr_utime;
compat_timeval pr_stime;
compat_timeval pr_cutime;
compat_timeval pr_cstime;
ELFLinuxPrStatus();
lldb_private::Status Parse(const lldb_private::DataExtractor &data,
const lldb_private::ArchSpec &arch);
// Return the bytesize of the structure
// 64 bit - just sizeof
// 32 bit - hardcoded because we are reusing the struct, but some of the
// members are smaller -
// so the layout is not the same
static size_t GetSize(const lldb_private::ArchSpec &arch);
};
static_assert(sizeof(ELFLinuxPrStatus) == 112,
"sizeof ELFLinuxPrStatus is not correct!");
struct ELFLinuxSigInfo {
int32_t si_signo;
int32_t si_code;
int32_t si_errno;
ELFLinuxSigInfo();
lldb_private::Status Parse(const lldb_private::DataExtractor &data,
const lldb_private::ArchSpec &arch);
// Return the bytesize of the structure
// 64 bit - just sizeof
// 32 bit - hardcoded because we are reusing the struct, but some of the
// members are smaller -
// so the layout is not the same
static size_t GetSize(const lldb_private::ArchSpec &arch);
};
static_assert(sizeof(ELFLinuxSigInfo) == 12,
"sizeof ELFLinuxSigInfo is not correct!");
// PRPSINFO structure's size differs based on architecture.
// This is the layout in the x86-64 arch case.
// In the i386 case we parse it manually and fill it again
// in the same structure
struct ELFLinuxPrPsInfo {
char pr_state;
char pr_sname;
char pr_zomb;
char pr_nice;
alignas(8) uint64_t pr_flag;
uint32_t pr_uid;
uint32_t pr_gid;
int32_t pr_pid;
int32_t pr_ppid;
int32_t pr_pgrp;
int32_t pr_sid;
char pr_fname[16];
char pr_psargs[80];
ELFLinuxPrPsInfo();
lldb_private::Status Parse(const lldb_private::DataExtractor &data,
const lldb_private::ArchSpec &arch);
// Return the bytesize of the structure
// 64 bit - just sizeof
// 32 bit - hardcoded because we are reusing the struct, but some of the
// members are smaller -
// so the layout is not the same
static size_t GetSize(const lldb_private::ArchSpec &arch);
};
static_assert(sizeof(ELFLinuxPrPsInfo) == 136,
"sizeof ELFLinuxPrPsInfo is not correct!");
struct ThreadData {
lldb_private::DataExtractor gpregset;
std::vector<lldb_private::CoreNote> notes;
lldb::tid_t tid;
int signo = 0;
int prstatus_sig = 0;
std::string name;
};
class ThreadElfCore : public lldb_private::Thread {
public:
ThreadElfCore(lldb_private::Process &process, const ThreadData &td);
~ThreadElfCore() override;
void RefreshStateAfterStop() override;
lldb::RegisterContextSP GetRegisterContext() override;
lldb::RegisterContextSP
CreateRegisterContextForFrame(lldb_private::StackFrame *frame) override;
static bool ThreadIDIsValid(lldb::tid_t thread) { return thread != 0; }
const char *GetName() override {
if (m_thread_name.empty())
return nullptr;
return m_thread_name.c_str();
}
void SetName(const char *name) override {
if (name && name[0])
m_thread_name.assign(name);
else
m_thread_name.clear();
}
protected:
// Member variables.
std::string m_thread_name;
lldb::RegisterContextSP m_thread_reg_ctx_sp;
int m_signo;
lldb_private::DataExtractor m_gpregset_data;
std::vector<lldb_private::CoreNote> m_notes;
bool CalculateStopInfo() override;
};
#endif // LLDB_SOURCE_PLUGINS_PROCESS_ELF_CORE_THREADELFCORE_H
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