1 | // Copyright (c) 2010 Google Inc. |
2 | // All rights reserved. |
3 | // |
4 | // Redistribution and use in source and binary forms, with or without |
5 | // modification, are permitted provided that the following conditions are |
6 | // met: |
7 | // |
8 | // * Redistributions of source code must retain the above copyright |
9 | // notice, this list of conditions and the following disclaimer. |
10 | // * Redistributions in binary form must reproduce the above |
11 | // copyright notice, this list of conditions and the following disclaimer |
12 | // in the documentation and/or other materials provided with the |
13 | // distribution. |
14 | // * Neither the name of Google Inc. nor the names of its |
15 | // contributors may be used to endorse or promote products derived from |
16 | // this software without specific prior written permission. |
17 | // |
18 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
19 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
20 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
21 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
22 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
23 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
24 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
25 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | |
30 | // memory_region.h: Access to memory regions. |
31 | // |
32 | // A MemoryRegion provides virtual access to a range of memory. It is an |
33 | // abstraction allowing the actual source of memory to be independent of |
34 | // methods which need to access a virtual memory space. |
35 | // |
36 | // Author: Mark Mentovai |
37 | |
38 | #ifndef GOOGLE_BREAKPAD_PROCESSOR_MEMORY_REGION_H__ |
39 | #define GOOGLE_BREAKPAD_PROCESSOR_MEMORY_REGION_H__ |
40 | |
41 | |
42 | #include "google_breakpad/common/breakpad_types.h" |
43 | |
44 | |
45 | namespace google_breakpad { |
46 | |
47 | |
48 | class MemoryRegion { |
49 | public: |
50 | virtual ~MemoryRegion() {} |
51 | |
52 | // The base address of this memory region. |
53 | virtual uint64_t GetBase() const = 0; |
54 | |
55 | // The size of this memory region. |
56 | virtual uint32_t GetSize() const = 0; |
57 | |
58 | // Access to data of various sizes within the memory region. address |
59 | // is a pointer to read, and it must lie within the memory region as |
60 | // defined by its base address and size. The location pointed to by |
61 | // value is set to the value at address. Byte-swapping is performed |
62 | // if necessary so that the value is appropriate for the running |
63 | // program. Returns true on success. Fails and returns false if address |
64 | // is out of the region's bounds (after considering the width of value), |
65 | // or for other types of errors. |
66 | virtual bool GetMemoryAtAddress(uint64_t address, uint8_t* value) const = 0; |
67 | virtual bool GetMemoryAtAddress(uint64_t address, uint16_t* value) const = 0; |
68 | virtual bool GetMemoryAtAddress(uint64_t address, uint32_t* value) const = 0; |
69 | virtual bool GetMemoryAtAddress(uint64_t address, uint64_t* value) const = 0; |
70 | |
71 | // Print a human-readable representation of the object to stdout. |
72 | virtual void Print() const = 0; |
73 | }; |
74 | |
75 | |
76 | } // namespace google_breakpad |
77 | |
78 | |
79 | #endif // GOOGLE_BREAKPAD_PROCESSOR_MEMORY_REGION_H__ |
80 | |