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1 // Copyright 2013 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 // MemorySanitizer support. | |
29 | |
30 #ifndef V8_MSAN_H_ | |
31 #define V8_MSAN_H_ | |
32 | |
33 #ifndef __has_feature | |
34 #define __has_feature(x) 0 | |
35 #endif | |
36 | |
37 #if __has_feature(memory_sanitizer) || defined(MEMORY_SANITIZER) | |
38 | |
39 #include <sanitizer/msan_interface.h> | |
40 | |
41 #ifndef MEMORY_SANITIZER | |
42 #define MEMORY_SANITIZER | |
43 #endif | |
44 | |
45 // An annotation for JIT->C++ transition. | |
46 #define MSAN_RUNTIME_FUNCTION3(a, b, c) \ | |
47 do { \ | |
48 int dummy; \ | |
49 __msan_unpoison(&dummy, 65536); \ | |
danno
2013/10/10 14:18:07
This seems totally arbitrary and extremely fragile
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50 __msan_unpoison(&(a), sizeof(a)); \ | |
51 __msan_unpoison(&(b), sizeof(b)); \ | |
52 __msan_unpoison(&(c), sizeof(c)); \ | |
danno
2013/10/10 14:18:07
Why are these not covered by the 64K above? From t
Evgeniy Stepanov
2013/10/10 15:08:54
Uninit information for function arguments is passe
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53 } while (0) | |
54 #define MSAN_RUNTIME_FUNCTION6(a, b, c, d, e, f) \ | |
55 do { \ | |
56 int dummy; \ | |
57 __msan_unpoison(&dummy, 65536); \ | |
58 __msan_unpoison(&(a), sizeof(a)); \ | |
59 __msan_unpoison(&(b), sizeof(b)); \ | |
60 __msan_unpoison(&(c), sizeof(c)); \ | |
61 __msan_unpoison(&(d), sizeof(d)); \ | |
62 __msan_unpoison(&(e), sizeof(e)); \ | |
63 __msan_unpoison(&(f), sizeof(f)); \ | |
64 } while (0) | |
65 | |
66 // Marks a memory range as fully initialized. | |
67 #define MSAN_MEMORY_IS_INITIALIZED(p, s) __msan_unpoison((p), (s)) | |
68 | |
69 #else | |
70 | |
71 #define MSAN_RUNTIME_FUNCTION3(a, b, c) | |
72 #define MSAN_RUNTIME_FUNCTION6(a, b, c, d, e, f) | |
73 #define MSAN_MEMORY_IS_INITIALIZED(p, s) | |
74 | |
75 #endif | |
76 | |
77 #endif // V8_MSAN_H_ | |
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