Swiftdiff options
| author | Remko Tronçon <git@el-tramo.be> | 2012-08-17 21:07:13 (GMT) |
|---|---|---|
| committer | Remko Tronçon <git@el-tramo.be> | 2012-08-17 21:07:13 (GMT) |
| commit | 4397df6b409ca84f63838fa635fc2abe8af80b71 (patch) | |
| tree | 0806d51a1aaa6a1f9ac00df318be72fbee19ec1d /3rdParty/Breakpad/src/common/mac/macho_walker.h | |
| parent | ead6c91f24d77de3319e77ae1354387407065ef1 (diff) | |
| download | swift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.zip swift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.tar.bz2 | |
Added Breakpad support for Windows.
Diffstat (limited to '3rdParty/Breakpad/src/common/mac/macho_walker.h')
| -rw-r--r-- | 3rdParty/Breakpad/src/common/mac/macho_walker.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/3rdParty/Breakpad/src/common/mac/macho_walker.h b/3rdParty/Breakpad/src/common/mac/macho_walker.h new file mode 100644 index 0000000..cee3eb8 --- /dev/null +++ b/3rdParty/Breakpad/src/common/mac/macho_walker.h @@ -0,0 +1,117 @@ +// Copyright (c) 2006, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// macho_walker.h: Iterate over the load commands in a mach-o file +// +// Author: Dan Waylonis + +#ifndef COMMON_MAC_MACHO_WALKER_H__ +#define COMMON_MAC_MACHO_WALKER_H__ + +#include <mach-o/loader.h> +#include <sys/types.h> + +namespace MacFileUtilities { + +class MachoWalker { + public: + // A callback function executed when a new load command is read. If no + // further processing of load commands is desired, return false. Otherwise, + // return true. + // |cmd| is the current command, and |offset| is the location relative to the + // beginning of the file (not header) where the command was read. If |swap| + // is set, then any command data (other than the returned load_command) should + // be swapped when read + typedef bool (*LoadCommandCallback)(MachoWalker *walker, load_command *cmd, + off_t offset, bool swap, void *context); + + MachoWalker(const char *path, LoadCommandCallback callback, void *context); + MachoWalker(void *memory, size_t size, LoadCommandCallback callback, + void *context); + ~MachoWalker(); + + // Begin walking the header for |cpu_type|. If |cpu_type| is 0, then the + // native cpu type is used. Otherwise, accepted values are listed in + // /usr/include/mach/machine.h (e.g., CPU_TYPE_X86 or CPU_TYPE_POWERPC). + // Returns false if opening the file failed or if the |cpu_type| is not + // present in the file. + bool WalkHeader(int cpu_type); + + // Locate (if any) the header offset for |cpu_type| and return in |offset|. + // Return true if found, false otherwise. + bool FindHeader(int cpu_type, off_t &offset); + + // Read |size| bytes from the opened file at |offset| into |buffer| + bool ReadBytes(void *buffer, size_t size, off_t offset); + + // Return the current header and header offset + bool CurrentHeader(struct mach_header_64 *header, off_t *offset); + + private: + // Validate the |cpu_type| + int ValidateCPUType(int cpu_type); + + // Process an individual header starting at |offset| from the start of the + // file. Return true if successful, false otherwise. + bool WalkHeaderAtOffset(off_t offset); + bool WalkHeader64AtOffset(off_t offset); + + // Bottleneck for walking the load commands + bool WalkHeaderCore(off_t offset, uint32_t number_of_commands, bool swap); + + // File descriptor to the opened file + int file_; + + // Memory location to read from. + void *memory_; + + // Size of the memory segment we can read from. + size_t memory_size_; + + // User specified callback & context + LoadCommandCallback callback_; + void *callback_context_; + + // Current header, size, and offset. The mach_header_64 is used for both + // 32-bit and 64-bit headers because they only differ in their last field + // (reserved). By adding the |current_header_size_| and the + // |current_header_offset_|, you can determine the offset in the file just + // after the header. + struct mach_header_64 *current_header_; + unsigned long current_header_size_; + off_t current_header_offset_; + + private: + MachoWalker(const MachoWalker &); + MachoWalker &operator=(const MachoWalker &); +}; + +} // namespace MacFileUtilities + +#endif // COMMON_MAC_MACHO_WALKER_H__ |