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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 u_int64_t GetBase() const = 0; | |
54 | |
55 // The size of this memory region. | |
56 virtual u_int32_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(u_int64_t address, u_int8_t* value) const =0; | |
67 virtual bool GetMemoryAtAddress(u_int64_t address, u_int16_t* value) const =0; | |
68 virtual bool GetMemoryAtAddress(u_int64_t address, u_int32_t* value) const =0; | |
69 virtual bool GetMemoryAtAddress(u_int64_t address, u_int64_t* value) const =0; | |
70 }; | |
71 | |
72 | |
73 } // namespace google_breakpad | |
74 | |
75 | |
76 #endif // GOOGLE_BREAKPAD_PROCESSOR_MEMORY_REGION_H__ | |
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