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//===-- RegisterContextThreadMemory.cpp -------------------------*- 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
//
//===----------------------------------------------------------------------===//
#include "lldb/Target/OperatingSystem.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/Status.h"
#include "lldb/lldb-private.h"
#include "RegisterContextThreadMemory.h"
using namespace lldb;
using namespace lldb_private;
RegisterContextThreadMemory::RegisterContextThreadMemory(
Thread &thread, lldb::addr_t register_data_addr)
: RegisterContext(thread, 0), m_thread_wp(thread.shared_from_this()),
m_reg_ctx_sp(), m_register_data_addr(register_data_addr), m_stop_id(0) {}
RegisterContextThreadMemory::~RegisterContextThreadMemory() {}
void RegisterContextThreadMemory::UpdateRegisterContext() {
ThreadSP thread_sp(m_thread_wp.lock());
if (thread_sp) {
ProcessSP process_sp(thread_sp->GetProcess());
if (process_sp) {
const uint32_t stop_id = process_sp->GetModID().GetStopID();
if (m_stop_id != stop_id) {
m_stop_id = stop_id;
m_reg_ctx_sp.reset();
}
if (!m_reg_ctx_sp) {
ThreadSP backing_thread_sp(thread_sp->GetBackingThread());
if (backing_thread_sp) {
m_reg_ctx_sp = backing_thread_sp->GetRegisterContext();
} else {
OperatingSystem *os = process_sp->GetOperatingSystem();
if (os->IsOperatingSystemPluginThread(thread_sp))
m_reg_ctx_sp = os->CreateRegisterContextForThread(
thread_sp.get(), m_register_data_addr);
}
}
} else {
m_reg_ctx_sp.reset();
}
} else {
m_reg_ctx_sp.reset();
}
}
//------------------------------------------------------------------
// Subclasses must override these functions
//------------------------------------------------------------------
void RegisterContextThreadMemory::InvalidateAllRegisters() {
UpdateRegisterContext();
if (m_reg_ctx_sp)
m_reg_ctx_sp->InvalidateAllRegisters();
}
size_t RegisterContextThreadMemory::GetRegisterCount() {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->GetRegisterCount();
return 0;
}
const RegisterInfo *
RegisterContextThreadMemory::GetRegisterInfoAtIndex(size_t reg) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->GetRegisterInfoAtIndex(reg);
return NULL;
}
size_t RegisterContextThreadMemory::GetRegisterSetCount() {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->GetRegisterSetCount();
return 0;
}
const RegisterSet *RegisterContextThreadMemory::GetRegisterSet(size_t reg_set) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->GetRegisterSet(reg_set);
return NULL;
}
bool RegisterContextThreadMemory::ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->ReadRegister(reg_info, reg_value);
return false;
}
bool RegisterContextThreadMemory::WriteRegister(
const RegisterInfo *reg_info, const RegisterValue ®_value) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->WriteRegister(reg_info, reg_value);
return false;
}
bool RegisterContextThreadMemory::ReadAllRegisterValues(
lldb::DataBufferSP &data_sp) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->ReadAllRegisterValues(data_sp);
return false;
}
bool RegisterContextThreadMemory::WriteAllRegisterValues(
const lldb::DataBufferSP &data_sp) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->WriteAllRegisterValues(data_sp);
return false;
}
bool RegisterContextThreadMemory::CopyFromRegisterContext(
lldb::RegisterContextSP reg_ctx_sp) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->CopyFromRegisterContext(reg_ctx_sp);
return false;
}
uint32_t RegisterContextThreadMemory::ConvertRegisterKindToRegisterNumber(
lldb::RegisterKind kind, uint32_t num) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->ConvertRegisterKindToRegisterNumber(kind, num);
return false;
}
uint32_t RegisterContextThreadMemory::NumSupportedHardwareBreakpoints() {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->NumSupportedHardwareBreakpoints();
return false;
}
uint32_t RegisterContextThreadMemory::SetHardwareBreakpoint(lldb::addr_t addr,
size_t size) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->SetHardwareBreakpoint(addr, size);
return 0;
}
bool RegisterContextThreadMemory::ClearHardwareBreakpoint(uint32_t hw_idx) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->ClearHardwareBreakpoint(hw_idx);
return false;
}
uint32_t RegisterContextThreadMemory::NumSupportedHardwareWatchpoints() {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->NumSupportedHardwareWatchpoints();
return 0;
}
uint32_t RegisterContextThreadMemory::SetHardwareWatchpoint(lldb::addr_t addr,
size_t size,
bool read,
bool write) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->SetHardwareWatchpoint(addr, size, read, write);
return 0;
}
bool RegisterContextThreadMemory::ClearHardwareWatchpoint(uint32_t hw_index) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->ClearHardwareWatchpoint(hw_index);
return false;
}
bool RegisterContextThreadMemory::HardwareSingleStep(bool enable) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->HardwareSingleStep(enable);
return false;
}
Status RegisterContextThreadMemory::ReadRegisterValueFromMemory(
const lldb_private::RegisterInfo *reg_info, lldb::addr_t src_addr,
uint32_t src_len, RegisterValue ®_value) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->ReadRegisterValueFromMemory(reg_info, src_addr,
src_len, reg_value);
Status error;
error.SetErrorString("invalid register context");
return error;
}
Status RegisterContextThreadMemory::WriteRegisterValueToMemory(
const lldb_private::RegisterInfo *reg_info, lldb::addr_t dst_addr,
uint32_t dst_len, const RegisterValue ®_value) {
UpdateRegisterContext();
if (m_reg_ctx_sp)
return m_reg_ctx_sp->WriteRegisterValueToMemory(reg_info, dst_addr, dst_len,
reg_value);
Status error;
error.SetErrorString("invalid register context");
return error;
}
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