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//===-- MachVMRegion.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
//
//===----------------------------------------------------------------------===//
//
// Created by Greg Clayton on 6/26/07.
//
//===----------------------------------------------------------------------===//
#ifndef __MachVMRegion_h__
#define __MachVMRegion_h__
#include "DNBDefs.h"
#include "DNBError.h"
#include <mach/mach.h>
class MachVMRegion {
public:
MachVMRegion(task_t task);
~MachVMRegion();
void Clear();
mach_vm_address_t StartAddress() const { return m_start; }
mach_vm_address_t EndAddress() const { return m_start + m_size; }
mach_vm_size_t GetByteSize() const { return m_size; }
mach_vm_address_t BytesRemaining(mach_vm_address_t addr) const {
if (ContainsAddress(addr))
return m_size - (addr - m_start);
else
return 0;
}
bool ContainsAddress(mach_vm_address_t addr) const {
return addr >= StartAddress() && addr < EndAddress();
}
bool SetProtections(mach_vm_address_t addr, mach_vm_size_t size,
vm_prot_t prot);
bool RestoreProtections();
bool GetRegionForAddress(nub_addr_t addr);
uint32_t GetDNBPermissions() const;
const DNBError &GetError() { return m_err; }
protected:
#if defined(VM_REGION_SUBMAP_SHORT_INFO_COUNT_64)
typedef vm_region_submap_short_info_data_64_t RegionInfo;
enum { kRegionInfoSize = VM_REGION_SUBMAP_SHORT_INFO_COUNT_64 };
#else
typedef vm_region_submap_info_data_64_t RegionInfo;
enum { kRegionInfoSize = VM_REGION_SUBMAP_INFO_COUNT_64 };
#endif
task_t m_task;
mach_vm_address_t m_addr;
DNBError m_err;
mach_vm_address_t m_start;
mach_vm_size_t m_size;
natural_t m_depth;
RegionInfo m_data;
vm_prot_t m_curr_protection; // The current, possibly modified protections.
// Original value is saved in m_data.protections.
mach_vm_address_t
m_protection_addr; // The start address at which protections were changed
mach_vm_size_t
m_protection_size; // The size of memory that had its protections changed
};
#endif // #ifndef __MachVMRegion_h__
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