toolkit/crashreporter/google-breakpad/src/common/arm_ex_reader.h@6474c204b198 (annotated)
toolkit/crashreporter/google-breakpad/src/common/arm_ex_reader.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | |
| michael@0 | 2 | /* libunwind - a platform-independent unwind library |
| michael@0 | 3 | Copyright 2011 Linaro Limited |
| michael@0 | 4 | |
| michael@0 | 5 | This file is part of libunwind. |
| michael@0 | 6 | |
| michael@0 | 7 | Permission is hereby granted, free of charge, to any person obtaining |
| michael@0 | 8 | a copy of this software and associated documentation files (the |
| michael@0 | 9 | "Software"), to deal in the Software without restriction, including |
| michael@0 | 10 | without limitation the rights to use, copy, modify, merge, publish, |
| michael@0 | 11 | distribute, sublicense, and/or sell copies of the Software, and to |
| michael@0 | 12 | permit persons to whom the Software is furnished to do so, subject to |
| michael@0 | 13 | the following conditions: |
| michael@0 | 14 | |
| michael@0 | 15 | The above copyright notice and this permission notice shall be |
| michael@0 | 16 | included in all copies or substantial portions of the Software. |
| michael@0 | 17 | |
| michael@0 | 18 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| michael@0 | 19 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| michael@0 | 20 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| michael@0 | 21 | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| michael@0 | 22 | LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| michael@0 | 23 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| michael@0 | 24 | WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ |
| michael@0 | 25 | |
| michael@0 | 26 | // Copyright (c) 2010 Google Inc. |
| michael@0 | 27 | // All rights reserved. |
| michael@0 | 28 | // |
| michael@0 | 29 | // Redistribution and use in source and binary forms, with or without |
| michael@0 | 30 | // modification, are permitted provided that the following conditions are |
| michael@0 | 31 | // met: |
| michael@0 | 32 | // |
| michael@0 | 33 | // * Redistributions of source code must retain the above copyright |
| michael@0 | 34 | // notice, this list of conditions and the following disclaimer. |
| michael@0 | 35 | // * Redistributions in binary form must reproduce the above |
| michael@0 | 36 | // copyright notice, this list of conditions and the following disclaimer |
| michael@0 | 37 | // in the documentation and/or other materials provided with the |
| michael@0 | 38 | // distribution. |
| michael@0 | 39 | // * Neither the name of Google Inc. nor the names of its |
| michael@0 | 40 | // contributors may be used to endorse or promote products derived from |
| michael@0 | 41 | // this software without specific prior written permission. |
| michael@0 | 42 | // |
| michael@0 | 43 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| michael@0 | 44 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| michael@0 | 45 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| michael@0 | 46 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| michael@0 | 47 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| michael@0 | 48 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| michael@0 | 49 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| michael@0 | 50 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| michael@0 | 51 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| michael@0 | 52 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| michael@0 | 53 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| michael@0 | 54 | |
| michael@0 | 55 | |
| michael@0 | 56 | // Derived from libunwind, with extensive modifications. |
| michael@0 | 57 | |
| michael@0 | 58 | #ifndef COMMON_ARM_EX_READER_H__ |
| michael@0 | 59 | #define COMMON_ARM_EX_READER_H__ |
| michael@0 | 60 | |
| michael@0 | 61 | #include "common/arm_ex_to_module.h" |
| michael@0 | 62 | #include "common/memory_range.h" |
| michael@0 | 63 | |
| michael@0 | 64 | namespace arm_ex_reader { |
| michael@0 | 65 | |
| michael@0 | 66 | // This class is a reader for ARM unwind information |
| michael@0 | 67 | // from .ARM.exidx and .ARM.extab sections. |
| michael@0 | 68 | class ExceptionTableInfo { |
| michael@0 | 69 | public: |
| michael@0 | 70 | ExceptionTableInfo(const char* exidx, size_t exidx_size, |
| michael@0 | 71 | const char* extab, size_t extab_size, |
| michael@0 | 72 | uint32_t text_last_svma, |
| michael@0 | 73 | arm_ex_to_module::ARMExToModule* handler, |
| michael@0 | 74 | const char* mapping_addr, |
| michael@0 | 75 | uint32_t loading_addr) |
| michael@0 | 76 | : mr_exidx_(google_breakpad::MemoryRange(exidx, exidx_size)), |
| michael@0 | 77 | mr_extab_(google_breakpad::MemoryRange(extab, extab_size)), |
| michael@0 | 78 | text_last_svma_(text_last_svma), |
| michael@0 | 79 | handler_(handler), mapping_addr_(mapping_addr), |
| michael@0 | 80 | loading_addr_(loading_addr) { } |
| michael@0 | 81 | |
| michael@0 | 82 | ~ExceptionTableInfo() { } |
| michael@0 | 83 | |
| michael@0 | 84 | // Parses the entries in .ARM.exidx and possibly |
| michael@0 | 85 | // in .ARM.extab tables, reports what we find to |
| michael@0 | 86 | // arm_ex_to_module::ARMExToModule. |
| michael@0 | 87 | void Start(); |
| michael@0 | 88 | |
| michael@0 | 89 | private: |
| michael@0 | 90 | google_breakpad::MemoryRange mr_exidx_; |
| michael@0 | 91 | google_breakpad::MemoryRange mr_extab_; |
| michael@0 | 92 | uint32_t text_last_svma_; |
| michael@0 | 93 | arm_ex_to_module::ARMExToModule* handler_; |
| michael@0 | 94 | const char* mapping_addr_; |
| michael@0 | 95 | uint32_t loading_addr_; |
| michael@0 | 96 | |
| michael@0 | 97 | enum ExExtractResult { |
| michael@0 | 98 | ExSuccess, // success |
| michael@0 | 99 | ExInBufOverflow, // out-of-range while reading .exidx |
| michael@0 | 100 | ExOutBufOverflow, // output buffer is too small |
| michael@0 | 101 | ExCantUnwind, // this function is marked CANT_UNWIND |
| michael@0 | 102 | ExCantRepresent, // entry valid, but we can't represent it |
| michael@0 | 103 | ExInvalid // entry is invalid |
| michael@0 | 104 | }; |
| michael@0 | 105 | ExExtractResult |
| michael@0 | 106 | ExtabEntryExtract(const struct arm_ex_to_module::exidx_entry* entry, |
| michael@0 | 107 | uint8_t* buf, size_t buf_size, |
| michael@0 | 108 | /*OUT*/size_t* buf_used); |
| michael@0 | 109 | |
| michael@0 | 110 | int ExtabEntryDecode(const uint8_t* buf, size_t buf_size); |
| michael@0 | 111 | }; |
| michael@0 | 112 | |
| michael@0 | 113 | } // namespace arm_ex_reader |
| michael@0 | 114 | |
| michael@0 | 115 | #endif // COMMON_ARM_EX_READER_H__ |
