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 
21 class MachVMMemory
22 {
23 public:
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 
31 protected:
32     nub_size_t MaxBytesLeftInPage(nub_addr_t addr, nub_size_t count);
33 
34     nub_size_t WriteRegion(task_t task, const nub_addr_t address, const void *data, const nub_size_t data_count);
35     vm_size_t        m_page_size;
36     DNBError    m_err;
37 };
38 
39 
40 #endif //    #ifndef __MachVMMemory_h__
41