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1//===-- MachVMRegion.h ------------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// Created by Greg Clayton on 6/26/07.10//11//===----------------------------------------------------------------------===//12 13#ifndef LLDB_TOOLS_DEBUGSERVER_SOURCE_MACOSX_MACHVMREGION_H14#define LLDB_TOOLS_DEBUGSERVER_SOURCE_MACOSX_MACHVMREGION_H15 16#include "DNBDefs.h"17#include "DNBError.h"18#include <mach/mach.h>19 20class MachVMRegion {21public:22 MachVMRegion(task_t task);23 ~MachVMRegion();24 25 void Clear();26 mach_vm_address_t StartAddress() const { return m_start; }27 mach_vm_address_t EndAddress() const { return m_start + m_size; }28 mach_vm_size_t GetByteSize() const { return m_size; }29 mach_vm_address_t BytesRemaining(mach_vm_address_t addr) const {30 if (ContainsAddress(addr))31 return m_size - (addr - m_start);32 else33 return 0;34 }35 bool ContainsAddress(mach_vm_address_t addr) const {36 return addr >= StartAddress() && addr < EndAddress();37 }38 39 bool SetProtections(mach_vm_address_t addr, mach_vm_size_t size,40 vm_prot_t prot);41 bool RestoreProtections();42 bool GetRegionForAddress(nub_addr_t addr);43 44 uint32_t GetDNBPermissions() const;45 std::vector<std::string> GetFlags() const;46 std::vector<std::string> GetMemoryTypes() const;47 48 const DNBError &GetError() { return m_err; }49 50protected:51#if defined(VM_REGION_SUBMAP_SHORT_INFO_COUNT_64)52 typedef vm_region_submap_short_info_data_64_t RegionInfo;53 enum { kRegionInfoSize = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64 };54#else55 typedef vm_region_submap_info_data_64_t RegionInfo;56 enum { kRegionInfoSize = VM_REGION_SUBMAP_INFO_COUNT_64 };57#endif58 59 task_t m_task;60 mach_vm_address_t m_addr;61 DNBError m_err;62 mach_vm_address_t m_start;63 mach_vm_size_t m_size;64 natural_t m_depth;65 RegionInfo m_data;66 vm_prot_t m_curr_protection; // The current, possibly modified protections.67 // Original value is saved in m_data.protections.68 mach_vm_address_t69 m_protection_addr; // The start address at which protections were changed70 mach_vm_size_t71 m_protection_size; // The size of memory that had its protections changed72};73 74#endif // LLDB_TOOLS_DEBUGSERVER_SOURCE_MACOSX_MACHVMREGION_H75