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//===-- RegisterContextHistory.cpp ----------------------------------------===//
//
// 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/Core/Address.h"
#include "lldb/Core/AddressRange.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/Value.h"
#include "lldb/Expression/DWARFExpression.h"
#include "lldb/Symbol/FuncUnwinders.h"
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/ObjectFile.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Target/ABI.h"
#include "lldb/Target/DynamicLoader.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/DataBufferHeap.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/RegisterValue.h"
#include "lldb/lldb-private.h"
#include "RegisterContextHistory.h"
using namespace lldb;
using namespace lldb_private;
RegisterContextHistory::RegisterContextHistory(Thread &thread,
uint32_t concrete_frame_idx,
uint32_t address_byte_size,
addr_t pc_value)
: RegisterContext(thread, concrete_frame_idx), m_pc_value(pc_value) {
m_reg_set0.name = "General Purpose Registers";
m_reg_set0.short_name = "GPR";
m_reg_set0.num_registers = 1;
m_reg_set0.registers = new uint32_t(0);
m_pc_reg_info.name = "pc";
m_pc_reg_info.alt_name = "pc";
m_pc_reg_info.byte_offset = 0;
m_pc_reg_info.byte_size = address_byte_size;
m_pc_reg_info.encoding = eEncodingUint;
m_pc_reg_info.format = eFormatPointer;
m_pc_reg_info.invalidate_regs = nullptr;
m_pc_reg_info.value_regs = nullptr;
m_pc_reg_info.kinds[eRegisterKindEHFrame] = LLDB_INVALID_REGNUM;
m_pc_reg_info.kinds[eRegisterKindDWARF] = LLDB_INVALID_REGNUM;
m_pc_reg_info.kinds[eRegisterKindGeneric] = LLDB_REGNUM_GENERIC_PC;
m_pc_reg_info.kinds[eRegisterKindProcessPlugin] = LLDB_INVALID_REGNUM;
m_pc_reg_info.kinds[eRegisterKindLLDB] = LLDB_INVALID_REGNUM;
}
RegisterContextHistory::~RegisterContextHistory() {
delete m_reg_set0.registers;
delete m_pc_reg_info.invalidate_regs;
delete m_pc_reg_info.value_regs;
}
void RegisterContextHistory::InvalidateAllRegisters() {}
size_t RegisterContextHistory::GetRegisterCount() { return 1; }
const lldb_private::RegisterInfo *
RegisterContextHistory::GetRegisterInfoAtIndex(size_t reg) {
if (reg)
return nullptr;
return &m_pc_reg_info;
}
size_t RegisterContextHistory::GetRegisterSetCount() { return 1; }
const lldb_private::RegisterSet *
RegisterContextHistory::GetRegisterSet(size_t reg_set) {
if (reg_set)
return nullptr;
return &m_reg_set0;
}
bool RegisterContextHistory::ReadRegister(
const lldb_private::RegisterInfo *reg_info,
lldb_private::RegisterValue &value) {
if (!reg_info)
return false;
uint32_t reg_number = reg_info->kinds[eRegisterKindGeneric];
if (reg_number == LLDB_REGNUM_GENERIC_PC) {
value.SetUInt(m_pc_value, reg_info->byte_size);
return true;
}
return false;
}
bool RegisterContextHistory::WriteRegister(
const lldb_private::RegisterInfo *reg_info,
const lldb_private::RegisterValue &value) {
return false;
}
bool RegisterContextHistory::ReadAllRegisterValues(
lldb::WritableDataBufferSP &data_sp) {
return false;
}
bool RegisterContextHistory::WriteAllRegisterValues(
const lldb::DataBufferSP &data_sp) {
return false;
}
uint32_t RegisterContextHistory::ConvertRegisterKindToRegisterNumber(
lldb::RegisterKind kind, uint32_t num) {
if (kind == eRegisterKindGeneric && num == LLDB_REGNUM_GENERIC_PC)
return 0;
return LLDB_INVALID_REGNUM;
}
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