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_address_t BytesRemaining(mach_vm_address_t addr) const 31 { 32 if (ContainsAddress(addr)) 33 return m_size - (addr - m_start); 34 else 35 return 0; 36 } 37 bool ContainsAddress(mach_vm_address_t addr) const 38 { 39 return addr >= StartAddress() && addr < EndAddress(); 40 } 41 42 bool SetProtections(mach_vm_address_t addr, mach_vm_size_t size, vm_prot_t prot); 43 bool RestoreProtections(); 44 bool GetRegionForAddress(nub_addr_t addr); 45 protected: 46 #if defined (VM_REGION_SUBMAP_SHORT_INFO_COUNT_64) 47 typedef vm_region_submap_short_info_data_64_t RegionInfo; 48 enum { kRegionInfoSize = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64 }; 49 #else 50 typedef vm_region_submap_info_data_64_t RegionInfo; 51 enum { kRegionInfoSize = VM_REGION_SUBMAP_INFO_COUNT_64 }; 52 #endif 53 54 task_t m_task; 55 mach_vm_address_t m_addr; 56 DNBError m_err; 57 mach_vm_address_t m_start; 58 mach_vm_size_t m_size; 59 natural_t m_depth; 60 RegionInfo m_data; 61 vm_prot_t m_curr_protection; // The current, possibly modified protections. Original value is saved in m_data.protections. 62 mach_vm_address_t m_protection_addr; // The start address at which protections were changed 63 mach_vm_size_t m_protection_size; // The size of memory that had its protections changed 64 65 }; 66 67 #endif // #ifndef __MachVMRegion_h__ 68