1 //===-- MachVMRegion.h ------------------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // Created by Greg Clayton on 6/26/07. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef __MachVMRegion_h__ 15 #define __MachVMRegion_h__ 16 17 #include "DNBDefs.h" 18 #include "DNBError.h" 19 #include <mach/mach.h> 20 21 class MachVMRegion 22 { 23 public: 24 MachVMRegion(task_t task); 25 ~MachVMRegion(); 26 27 void Clear(); 28 mach_vm_address_t StartAddress() const { return m_start; } 29 mach_vm_address_t EndAddress() const { return m_start + m_size; } 30 mach_vm_size_t GetByteSize () const { return m_size; } 31 mach_vm_address_t BytesRemaining(mach_vm_address_t addr) const 32 { 33 if (ContainsAddress(addr)) 34 return m_size - (addr - m_start); 35 else 36 return 0; 37 } 38 bool ContainsAddress(mach_vm_address_t addr) const 39 { 40 return addr >= StartAddress() && addr < EndAddress(); 41 } 42 43 bool SetProtections(mach_vm_address_t addr, mach_vm_size_t size, vm_prot_t prot); 44 bool RestoreProtections(); 45 bool GetRegionForAddress(nub_addr_t addr); 46 47 uint32_t 48 GetDNBPermissions () const; 49 50 const DNBError & 51 GetError () 52 { 53 return m_err; 54 } 55 protected: 56 #if defined (VM_REGION_SUBMAP_SHORT_INFO_COUNT_64) 57 typedef vm_region_submap_short_info_data_64_t RegionInfo; 58 enum { kRegionInfoSize = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64 }; 59 #else 60 typedef vm_region_submap_info_data_64_t RegionInfo; 61 enum { kRegionInfoSize = VM_REGION_SUBMAP_INFO_COUNT_64 }; 62 #endif 63 64 task_t m_task; 65 mach_vm_address_t m_addr; 66 DNBError m_err; 67 mach_vm_address_t m_start; 68 mach_vm_size_t m_size; 69 natural_t m_depth; 70 RegionInfo m_data; 71 vm_prot_t m_curr_protection; // The current, possibly modified protections. Original value is saved in m_data.protections. 72 mach_vm_address_t m_protection_addr; // The start address at which protections were changed 73 mach_vm_size_t m_protection_size; // The size of memory that had its protections changed 74 75 }; 76 77 #endif // #ifndef __MachVMRegion_h__ 78
