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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Created by Greg Clayton on 6/26/07. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLDB_TOOLS_DEBUGSERVER_SOURCE_MACOSX_MACHVMREGION_H 14 #define LLDB_TOOLS_DEBUGSERVER_SOURCE_MACOSX_MACHVMREGION_H 15 16 #include "DNBDefs.h" 17 #include "DNBError.h" 18 #include <mach/mach.h> 19 20 class MachVMRegion { 21 public: 22 MachVMRegion(task_t task); 23 ~MachVMRegion(); 24 25 void Clear(); StartAddress()26 mach_vm_address_t StartAddress() const { return m_start; } EndAddress()27 mach_vm_address_t EndAddress() const { return m_start + m_size; } GetByteSize()28 mach_vm_size_t GetByteSize() const { return m_size; } BytesRemaining(mach_vm_address_t addr)29 mach_vm_address_t BytesRemaining(mach_vm_address_t addr) const { 30 if (ContainsAddress(addr)) 31 return m_size - (addr - m_start); 32 else 33 return 0; 34 } ContainsAddress(mach_vm_address_t addr)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 GetError()46 const DNBError &GetError() { return m_err; } 47 48 protected: 49 #if defined(VM_REGION_SUBMAP_SHORT_INFO_COUNT_64) 50 typedef vm_region_submap_short_info_data_64_t RegionInfo; 51 enum { kRegionInfoSize = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64 }; 52 #else 53 typedef vm_region_submap_info_data_64_t RegionInfo; 54 enum { kRegionInfoSize = VM_REGION_SUBMAP_INFO_COUNT_64 }; 55 #endif 56 57 task_t m_task; 58 mach_vm_address_t m_addr; 59 DNBError m_err; 60 mach_vm_address_t m_start; 61 mach_vm_size_t m_size; 62 natural_t m_depth; 63 RegionInfo m_data; 64 vm_prot_t m_curr_protection; // The current, possibly modified protections. 65 // Original value is saved in m_data.protections. 66 mach_vm_address_t 67 m_protection_addr; // The start address at which protections were changed 68 mach_vm_size_t 69 m_protection_size; // The size of memory that had its protections changed 70 }; 71 72 #endif // LLDB_TOOLS_DEBUGSERVER_SOURCE_MACOSX_MACHVMREGION_H 73