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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/processor/synth_minidump.h')
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diff --git a/toolkit/crashreporter/google-breakpad/src/processor/synth_minidump.h b/toolkit/crashreporter/google-breakpad/src/processor/synth_minidump.h new file mode 100644 index 0000000000..8f49cfff22 --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/processor/synth_minidump.h @@ -0,0 +1,398 @@ +// -*- mode: C++ -*- + +// Copyright (c) 2010, 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. + +// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com> + +// synth_minidump.h: Interface to SynthMinidump: fake minidump generator. +// +// We treat a minidump file as the concatenation of a bunch of +// test_assembler::Sections. The file header, stream directory, +// streams, memory regions, strings, and so on --- each is a Section +// that eventually gets appended to the minidump. Dump, Memory, +// Context, Thread, and so on all inherit from test_assembler::Section. +// For example: +// +// using google_breakpad::test_assembler::kLittleEndian; +// using google_breakpad::SynthMinidump::Context; +// using google_breakpad::SynthMinidump::Dump; +// using google_breakpad::SynthMinidump::Memory; +// using google_breakpad::SynthMinidump::Thread; +// +// Dump minidump(MD_NORMAL, kLittleEndian); +// +// Memory stack1(minidump, 0x569eb0a9); +// ... build contents of stack1 with test_assembler::Section functions ... +// +// MDRawContextX86 x86_context1; +// x86_context1.context_flags = MD_CONTEXT_X86; +// x86_context1.eip = 0x7c90eb94; +// x86_context1.esp = 0x569eb0a9; +// x86_context1.ebp = x86_context1.esp + something appropriate; +// Context context1(minidump, x86_context1); +// +// Thread thread1(minidump, 0xe4a4821d, stack1, context1); +// +// minidump.Add(&stack1); +// minidump.Add(&context1); +// minidump.Add(&thread1); +// minidump.Finish(); +// +// string contents; +// EXPECT_TRUE(minidump.GetContents(&contents)); +// // contents now holds the bytes of a minidump file +// +// Because the test_assembler classes let us write Label references to +// sections before the Labels' values are known, this gives us +// flexibility in how we put the dump together: minidump pieces can +// hold the file offsets of other minidump pieces before the +// referents' positions have been decided. As long as everything has +// been placed by the time we call dump.GetContents to obtain the +// bytes, all the Labels' values will be known, and everything will +// get patched up appropriately. +// +// The dump.Add(thing) functions append THINGS's contents to the +// minidump, but they also do two other things: +// +// - dump.Add(thing) invokes thing->Finish, which tells *thing the +// offset within the file at which it was placed, and allows *thing +// to do any final content generation. +// +// - If THING is something which should receive an entry in some sort +// of list or directory, then dump.Add(THING) automatically creates +// the appropriate directory or list entry. Streams must appear in +// the stream directory; memory ranges should be listed in the +// memory list; threads should be placed in the thread list; and so +// on. +// +// By convention, Section subclass constructors that take references +// to other Sections do not take care of 'Add'ing their arguments to +// the dump. For example, although the Thread constructor takes +// references to a Memory and a Context, it does not add them to the +// dump on the caller's behalf. Rather, the caller is responsible for +// 'Add'ing every section they create. This allows Sections to be +// cited from more than one place; for example, Memory ranges are +// cited both from Thread objects (as their stack contents) and by the +// memory list stream. +// +// If you forget to Add some Section, the Dump::GetContents call will +// fail, as the test_assembler::Labels used to cite the Section's +// contents from elsewhere will still be undefined. +#ifndef PROCESSOR_SYNTH_MINIDUMP_H_ +#define PROCESSOR_SYNTH_MINIDUMP_H_ + +#include <assert.h> + +#include <iostream> +#include <string> + +#include "common/test_assembler.h" +#include "common/using_std_string.h" +#include "google_breakpad/common/breakpad_types.h" +#include "google_breakpad/common/minidump_format.h" + +namespace google_breakpad { + +namespace SynthMinidump { + +using test_assembler::Endianness; +using test_assembler::kBigEndian; +using test_assembler::kLittleEndian; +using test_assembler::kUnsetEndian; +using test_assembler::Label; + +class Dump; +class Memory; +class String; + +// A test_assembler::Section which will be appended to a minidump. +class Section: public test_assembler::Section { + public: + explicit Section(const Dump &dump); + + // Append an MDLocationDescriptor referring to this section to SECTION. + // If 'this' is NULL, append a descriptor with a zero length and MDRVA. + // + // (I couldn't find the language in the C++ standard that says that + // invoking member functions of a NULL pointer to a class type is + // bad, if such language exists. Having this function handle NULL + // 'this' is convenient, but if it causes trouble, it's not hard to + // do differently.) + void CiteLocationIn(test_assembler::Section *section) const; + + // Note that this section's contents are complete, and that it has + // been placed in the minidump file at OFFSET. The 'Add' member + // functions call the Finish member function of the object being + // added for you; if you are 'Add'ing this section, you needn't Finish it. + virtual void Finish(const Label &offset) { + file_offset_ = offset; size_ = Size(); + } + + protected: + // This section's size and offset within the minidump file. + Label file_offset_, size_; +}; + +// A stream within a minidump file. 'Add'ing a stream to a minidump +// creates an entry for it in the minidump's stream directory. +class Stream: public Section { + public: + // Create a stream of type TYPE. You can append whatever contents + // you like to this stream using the test_assembler::Section methods. + Stream(const Dump &dump, uint32_t type) : Section(dump), type_(type) { } + + // Append an MDRawDirectory referring to this stream to SECTION. + void CiteStreamIn(test_assembler::Section *section) const; + + private: + // The type of this stream. + uint32_t type_; +}; + +class SystemInfo: public Stream { + public: + // Create an MD_SYSTEM_INFO_STREAM stream belonging to DUMP holding + // an MDRawSystem info structure initialized with the values from + // SYSTEM_INFO, except that the csd_version field is replaced with + // the file offset of the string CSD_VERSION, which can be 'Add'ed + // to the dump at the desired location. + // + // Remember that you are still responsible for 'Add'ing CSD_VERSION + // to the dump yourself. + SystemInfo(const Dump &dump, + const MDRawSystemInfo &system_info, + const String &csd_version); + + // Stock MDRawSystemInfo information and associated strings, for + // writing tests. + static const MDRawSystemInfo windows_x86; + static const string windows_x86_csd_version; +}; + +// An MDString: a string preceded by a 32-bit length. +class String: public Section { + public: + String(const Dump &dump, const string &value); + + // Append an MDRVA referring to this string to SECTION. + void CiteStringIn(test_assembler::Section *section) const; +}; + +// A range of memory contents. 'Add'ing a memory range to a minidump +// creates n entry for it in the minidump's memory list. By +// convention, the 'start', 'Here', and 'Mark' member functions refer +// to memory addresses. +class Memory: public Section { + public: + Memory(const Dump &dump, uint64_t address) + : Section(dump), address_(address) { start() = address; } + + // Append an MDMemoryDescriptor referring to this memory range to SECTION. + void CiteMemoryIn(test_assembler::Section *section) const; + + private: + // The process address from which these memory contents were taken. + // Shouldn't this be a Label? + uint64_t address_; +}; + +class Context: public Section { + public: + // Create a context belonging to DUMP whose contents are a copy of CONTEXT. + Context(const Dump &dump, const MDRawContextX86 &context); + Context(const Dump &dump, const MDRawContextARM &context); + Context(const Dump &dump, const MDRawContextMIPS &context); + // Add an empty context to the dump. + Context(const Dump &dump) : Section(dump) {} + // Add constructors for other architectures here. Remember to byteswap. +}; + +class Thread: public Section { + public: + // Create a thread belonging to DUMP with the given values, citing + // STACK and CONTEXT (which you must Add to the dump separately). + Thread(const Dump &dump, + uint32_t thread_id, + const Memory &stack, + const Context &context, + uint32_t suspend_count = 0, + uint32_t priority_class = 0, + uint32_t priority = 0, + uint64_t teb = 0); +}; + +class Module: public Section { + public: + // Create a module with the given values. Note that CV_RECORD and + // MISC_RECORD can be NULL, in which case the corresponding location + // descriptior in the minidump will have a length of zero. + Module(const Dump &dump, + uint64_t base_of_image, + uint32_t size_of_image, + const String &name, + uint32_t time_date_stamp = 1262805309, + uint32_t checksum = 0, + const MDVSFixedFileInfo &version_info = Module::stock_version_info, + const Section *cv_record = NULL, + const Section *misc_record = NULL); + + private: + // A standard MDVSFixedFileInfo structure to use as a default for + // minidumps. There's no reason to make users write out all this crap + // over and over. + static const MDVSFixedFileInfo stock_version_info; +}; + +class UnloadedModule: public Section { + public: + UnloadedModule(const Dump &dump, + uint64_t base_of_image, + uint32_t size_of_image, + const String &name, + uint32_t checksum = 0, + uint32_t time_date_stamp = 1262805309); +}; + +class Exception : public Stream { +public: + Exception(const Dump &dump, + const Context &context, + uint32_t thread_id = 0, + uint32_t exception_code = 0, + uint32_t exception_flags = 0, + uint64_t exception_address = 0); +}; + +// A list of entries starting with a 32-bit count, like a memory list +// or a thread list. +template<typename Element> +class List: public Stream { + public: + List(const Dump &dump, uint32_t type) : Stream(dump, type), count_(0) { + D32(count_label_); + } + + // Add ELEMENT to this list. + void Add(Element *element) { + element->Finish(file_offset_ + Size()); + Append(*element); + count_++; + } + + // Return true if this List is empty, false otherwise. + bool Empty() { return count_ == 0; } + + // Finish up the contents of this section, mark it as having been + // placed at OFFSET. + virtual void Finish(const Label &offset) { + Stream::Finish(offset); + count_label_ = count_; + } + + private: + size_t count_; + + protected: + // This constructor allows derived lists to specify their own layout + // rather than starting with count as specified in the public constructor. + List(const Dump &dump, uint32_t type, bool) : Stream(dump, type), count_(0) {} + + Label count_label_; +}; + +class UnloadedModuleList : public List<UnloadedModule> { + public: + UnloadedModuleList(const Dump &dump, uint32_t type); +}; + +class Dump: public test_assembler::Section { + public: + + // Create a test_assembler::Section containing a minidump file whose + // header uses the given values. ENDIANNESS determines the + // endianness of the signature; we set this section's default + // endianness by this. + Dump(uint64_t flags, + Endianness endianness = kLittleEndian, + uint32_t version = MD_HEADER_VERSION, + uint32_t date_time_stamp = 1262805309); + + // The following functions call OBJECT->Finish(), and append the + // contents of OBJECT to this minidump. They also record OBJECT in + // whatever directory or list is appropriate for its type. The + // stream directory, memory list, thread list, and module list are + // accumulated this way. + Dump &Add(SynthMinidump::Section *object); // simply append data + Dump &Add(Stream *object); // append, record in stream directory + Dump &Add(Memory *object); // append, record in memory list + Dump &Add(Thread *object); // append, record in thread list + Dump &Add(Module *object); // append, record in module list + Dump &Add(UnloadedModule *object); // append, record in unloaded module list + + // Complete the construction of the minidump, given the Add calls + // we've seen up to this point. After this call, this Dump's + // contents are complete, all labels should be defined if everything + // Cited has been Added, and you may call GetContents on it. + void Finish(); + + private: + // A label representing the start of the minidump file. + Label file_start_; + + // The stream directory. We construct this incrementally from + // Add(Stream *) calls. + SynthMinidump::Section stream_directory_; // The directory's contents. + size_t stream_count_; // The number of streams so far. + Label stream_count_label_; // Cited in file header. + Label stream_directory_rva_; // The directory's file offset. + + // This minidump's thread list. We construct this incrementally from + // Add(Thread *) calls. + List<Thread> thread_list_; + + // This minidump's module list. We construct this incrementally from + // Add(Module *) calls. + List<Module> module_list_; + + // This minidump's unloaded module list. We construct this incrementally from + // Add(UnloadedModule *) calls. + UnloadedModuleList unloaded_module_list_; + + // This minidump's memory list. We construct this incrementally from + // Add(Memory *) calls. This is actually a list of MDMemoryDescriptors, + // not memory ranges --- thus the odd type. + List<SynthMinidump::Section> memory_list_; +}; + +} // namespace SynthMinidump + +} // namespace google_breakpad + +#endif // PROCESSOR_SYNTH_MINIDUMP_H_ |