RegisterContextPOSIX.h
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//===-- RegisterContextPOSIX.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 liblldb_RegisterContextPOSIX_H_
#define liblldb_RegisterContextPOSIX_H_
#include "Plugins/Process/Utility/RegisterInfoInterface.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Utility/ArchSpec.h"
/// \class POSIXBreakpointProtocol
///
/// Extends RegisterClass with a few virtual operations useful on POSIX.
class POSIXBreakpointProtocol {
public:
POSIXBreakpointProtocol() { m_watchpoints_initialized = false; }
virtual ~POSIXBreakpointProtocol() {}
/// Updates the register state of the associated thread after hitting a
/// breakpoint (if that make sense for the architecture). Default
/// implementation simply returns true for architectures which do not
/// require any update.
///
/// \return
/// True if the operation succeeded and false otherwise.
virtual bool UpdateAfterBreakpoint() = 0;
/// Determines the index in lldb's register file given a kernel byte offset.
virtual unsigned GetRegisterIndexFromOffset(unsigned offset) = 0;
// Checks to see if a watchpoint specified by hw_index caused the inferior
// to stop.
virtual bool IsWatchpointHit(uint32_t hw_index) = 0;
// Resets any watchpoints that have been hit.
virtual bool ClearWatchpointHits() = 0;
// Returns the watchpoint address associated with a watchpoint hardware
// index.
virtual lldb::addr_t GetWatchpointAddress(uint32_t hw_index) = 0;
virtual bool IsWatchpointVacant(uint32_t hw_index) = 0;
virtual bool SetHardwareWatchpointWithIndex(lldb::addr_t addr, size_t size,
bool read, bool write,
uint32_t hw_index) = 0;
// From lldb_private::RegisterContext
virtual uint32_t NumSupportedHardwareWatchpoints() = 0;
// Force m_watchpoints_initialized to TRUE
void ForceWatchpointsInitialized() { m_watchpoints_initialized = true; }
protected:
bool m_watchpoints_initialized;
};
#endif // #ifndef liblldb_RegisterContextPOSIX_H_