MachVMMemory.h revision a9385537809ef342c843c5ab972e513742652047 
1//===-- MachVMMemory.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 __MachVMMemory_h__
15#define __MachVMMemory_h__
16
17#include "DNBDefs.h"
18#include "DNBError.h"
19#include <mach/mach.h>
20
21class MachVMMemory
22{
23public:
24    enum { kInvalidPageSize = ~0 };
25    MachVMMemory();
26    ~MachVMMemory();
27    nub_size_t Read(task_t task, nub_addr_t address, void *data, nub_size_t data_count);
28    nub_size_t Write(task_t task, nub_addr_t address, const void *data, nub_size_t data_count);
29    nub_size_t PageSize();
30    int        GetMemoryRegionInfo(task_t task, nub_addr_t address, DNBRegionInfo *region_info);
31
32protected:
33    nub_size_t MaxBytesLeftInPage(nub_addr_t addr, nub_size_t count);
34
35    nub_size_t WriteRegion(task_t task, const nub_addr_t address, const void *data, const nub_size_t data_count);
36    vm_size_t        m_page_size;
37    DNBError    m_err;
38};
39
40
41#endif //    #ifndef __MachVMMemory_h__
42