RegisterContextThreadMemory.h
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//===-- RegisterContextThreadMemory.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_RegisterContextThreadMemory_h_
#define lldb_RegisterContextThreadMemory_h_
#include <vector>
#include "lldb/Symbol/SymbolContext.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/lldb-private.h"
namespace lldb_private {
class RegisterContextThreadMemory : public lldb_private::RegisterContext {
public:
RegisterContextThreadMemory(Thread &thread, lldb::addr_t register_data_addr);
~RegisterContextThreadMemory() override;
void InvalidateAllRegisters() override;
size_t GetRegisterCount() override;
const RegisterInfo *GetRegisterInfoAtIndex(size_t reg) override;
size_t GetRegisterSetCount() override;
const RegisterSet *GetRegisterSet(size_t reg_set) override;
bool ReadRegister(const RegisterInfo *reg_info,
RegisterValue ®_value) override;
bool WriteRegister(const RegisterInfo *reg_info,
const RegisterValue ®_value) override;
// These two functions are used to implement "push" and "pop" of register
// states. They are used primarily
// for expression evaluation, where we need to push a new state (storing the
// old one in data_sp) and then
// restoring the original state by passing the data_sp we got from
// ReadAllRegisters to WriteAllRegisterValues.
// ReadAllRegisters will do what is necessary to return a coherent set of
// register values for this thread, which
// may mean e.g. interrupting a thread that is sitting in a kernel trap. That
// is a somewhat disruptive operation,
// so these API's should only be used when this behavior is needed.
bool ReadAllRegisterValues(lldb::DataBufferSP &data_sp) override;
bool WriteAllRegisterValues(const lldb::DataBufferSP &data_sp) override;
bool CopyFromRegisterContext(lldb::RegisterContextSP context);
uint32_t ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
uint32_t num) override;
uint32_t NumSupportedHardwareBreakpoints() override;
uint32_t SetHardwareBreakpoint(lldb::addr_t addr, size_t size) override;
bool ClearHardwareBreakpoint(uint32_t hw_idx) override;
uint32_t NumSupportedHardwareWatchpoints() override;
uint32_t SetHardwareWatchpoint(lldb::addr_t addr, size_t size, bool read,
bool write) override;
bool ClearHardwareWatchpoint(uint32_t hw_index) override;
bool HardwareSingleStep(bool enable) override;
Status ReadRegisterValueFromMemory(const lldb_private::RegisterInfo *reg_info,
lldb::addr_t src_addr, uint32_t src_len,
RegisterValue ®_value) override;
Status WriteRegisterValueToMemory(const lldb_private::RegisterInfo *reg_info,
lldb::addr_t dst_addr, uint32_t dst_len,
const RegisterValue ®_value) override;
protected:
void UpdateRegisterContext();
lldb::ThreadWP m_thread_wp;
lldb::RegisterContextSP m_reg_ctx_sp;
lldb::addr_t m_register_data_addr;
uint32_t m_stop_id;
private:
DISALLOW_COPY_AND_ASSIGN(RegisterContextThreadMemory);
};
} // namespace lldb_private
#endif // lldb_RegisterContextThreadMemory_h_