192 lines
7.8 KiB
C++
192 lines
7.8 KiB
C++
// Copyright (c) 2006, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// minidump_generator.h: Create a minidump of the current MacOS process.
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#ifndef CLIENT_MAC_GENERATOR_MINIDUMP_GENERATOR_H__
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#define CLIENT_MAC_GENERATOR_MINIDUMP_GENERATOR_H__
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#include <mach/mach.h>
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#include <string>
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#include "client/minidump_file_writer.h"
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#include "common/memory.h"
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#include "common/mac/macho_utilities.h"
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#include "google_breakpad/common/minidump_format.h"
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#include "dynamic_images.h"
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namespace google_breakpad {
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using std::string;
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const u_int64_t TOP_OF_THREAD0_STACK_64BIT = 0x00007fff5fbff000LL;
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const u_int32_t TOP_OF_THREAD0_STACK_32BIT = 0xbffff000;
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// Use the REGISTER_FROM_THREADSTATE to access a register name from the
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// breakpad_thread_state_t structure.
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#if __DARWIN_UNIX03 || TARGET_CPU_X86_64 || TARGET_CPU_PPC64
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// In The 10.5 SDK Headers Apple prepended __ to the variable names in the
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// i386_thread_state_t structure. There's no good way to tell what version of
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// the SDK we're compiling against so we just toggle on the same preprocessor
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// symbol Apple's headers use.
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#define REGISTER_FROM_THREADSTATE(a, b) ((a)->__ ## b)
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#else
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#define REGISTER_FROM_THREADSTATE(a, b) (a->b)
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#endif
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// Creates a minidump file of the current process. If there is exception data,
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// use SetExceptionInformation() to add this to the minidump. The minidump
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// file is generated by the Write() function.
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// Usage:
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// MinidumpGenerator minidump();
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// minidump.Write("/tmp/minidump");
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//
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class MinidumpGenerator {
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public:
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MinidumpGenerator();
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MinidumpGenerator(mach_port_t crashing_task, mach_port_t handler_thread);
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~MinidumpGenerator();
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// Return <dir>/<unique_name>.dmp
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// Sets |unique_name| (if requested) to the unique name for the minidump
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static string UniqueNameInDirectory(const string &dir, string *unique_name);
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// Write out the minidump into |path|
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// All of the components of |path| must exist and be writable
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// Return true if successful, false otherwise
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bool Write(const char *path);
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// Specify some exception information, if applicable
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void SetExceptionInformation(int type, int code, int subcode,
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mach_port_t thread_name) {
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exception_type_ = type;
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exception_code_ = code;
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exception_subcode_ = subcode;
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exception_thread_ = thread_name;
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}
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// Gather system information. This should be call at least once before using
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// the MinidumpGenerator class.
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static void GatherSystemInformation();
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private:
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typedef bool (MinidumpGenerator::*WriteStreamFN)(MDRawDirectory *);
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// Stream writers
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bool WriteThreadListStream(MDRawDirectory *thread_list_stream);
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bool WriteMemoryListStream(MDRawDirectory *memory_list_stream);
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bool WriteExceptionStream(MDRawDirectory *exception_stream);
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bool WriteSystemInfoStream(MDRawDirectory *system_info_stream);
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bool WriteModuleListStream(MDRawDirectory *module_list_stream);
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bool WriteMiscInfoStream(MDRawDirectory *misc_info_stream);
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bool WriteBreakpadInfoStream(MDRawDirectory *breakpad_info_stream);
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// Helpers
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u_int64_t CurrentPCForStack(breakpad_thread_state_data_t state);
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bool GetThreadState(thread_act_t target_thread, thread_state_t state,
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mach_msg_type_number_t *count);
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bool WriteStackFromStartAddress(mach_vm_address_t start_addr,
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MDMemoryDescriptor *stack_location);
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bool WriteStack(breakpad_thread_state_data_t state,
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MDMemoryDescriptor *stack_location);
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bool WriteContext(breakpad_thread_state_data_t state,
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MDLocationDescriptor *register_location);
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bool WriteThreadStream(mach_port_t thread_id, MDRawThread *thread);
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bool WriteCVRecord(MDRawModule *module, int cpu_type,
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const char *module_path);
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bool WriteModuleStream(unsigned int index, MDRawModule *module);
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size_t CalculateStackSize(mach_vm_address_t start_addr);
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int FindExecutableModule();
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// Per-CPU implementations of these methods
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bool WriteStackPPC(breakpad_thread_state_data_t state,
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MDMemoryDescriptor *stack_location);
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bool WriteContextPPC(breakpad_thread_state_data_t state,
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MDLocationDescriptor *register_location);
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u_int64_t CurrentPCForStackPPC(breakpad_thread_state_data_t state);
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bool WriteStackPPC64(breakpad_thread_state_data_t state,
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MDMemoryDescriptor *stack_location);
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bool WriteContextPPC64(breakpad_thread_state_data_t state,
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MDLocationDescriptor *register_location);
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u_int64_t CurrentPCForStackPPC64(breakpad_thread_state_data_t state);
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bool WriteStackX86(breakpad_thread_state_data_t state,
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MDMemoryDescriptor *stack_location);
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bool WriteContextX86(breakpad_thread_state_data_t state,
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MDLocationDescriptor *register_location);
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u_int64_t CurrentPCForStackX86(breakpad_thread_state_data_t state);
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bool WriteStackX86_64(breakpad_thread_state_data_t state,
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MDMemoryDescriptor *stack_location);
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bool WriteContextX86_64(breakpad_thread_state_data_t state,
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MDLocationDescriptor *register_location);
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u_int64_t CurrentPCForStackX86_64(breakpad_thread_state_data_t state);
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// disallow copy ctor and operator=
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explicit MinidumpGenerator(const MinidumpGenerator &);
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void operator=(const MinidumpGenerator &);
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// Use this writer to put the data to disk
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MinidumpFileWriter writer_;
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// Exception information
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int exception_type_;
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int exception_code_;
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int exception_subcode_;
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mach_port_t exception_thread_;
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mach_port_t crashing_task_;
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mach_port_t handler_thread_;
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// CPU type of the task being dumped.
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cpu_type_t cpu_type_;
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// System information
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static char build_string_[16];
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static int os_major_version_;
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static int os_minor_version_;
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static int os_build_number_;
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// Information about dynamically loaded code
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DynamicImages *dynamic_images_;
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// PageAllocator makes it possible to allocate memory
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// directly from the system, even while handling an exception.
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mutable PageAllocator allocator_;
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// Blocks of memory written to the dump. These are all currently
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// written while writing the thread list stream, but saved here
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// so a memory list stream can be written afterwards.
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wasteful_vector<MDMemoryDescriptor> memory_blocks_;
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};
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} // namespace google_breakpad
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#endif // CLIENT_MAC_GENERATOR_MINIDUMP_GENERATOR_H__
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