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Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/processor/fast_source_line_resolver.cc')
| -rw-r--r-- | toolkit/crashreporter/google-breakpad/src/processor/fast_source_line_resolver.cc | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/processor/fast_source_line_resolver.cc b/toolkit/crashreporter/google-breakpad/src/processor/fast_source_line_resolver.cc deleted file mode 100644 index 4a3d00071..000000000 --- a/toolkit/crashreporter/google-breakpad/src/processor/fast_source_line_resolver.cc +++ /dev/null @@ -1,275 +0,0 @@ -// 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. -// -// fast_source_line_resolver.cc: FastSourceLineResolver is a concrete class that -// implements SourceLineResolverInterface. Both FastSourceLineResolver and -// BasicSourceLineResolver inherit from SourceLineResolverBase class to reduce -// code redundancy. -// -// See fast_source_line_resolver.h and fast_source_line_resolver_types.h -// for more documentation. -// -// Author: Siyang Xie (lambxsy@google.com) - -#include "google_breakpad/processor/fast_source_line_resolver.h" -#include "processor/fast_source_line_resolver_types.h" - -#include <map> -#include <string> -#include <utility> - -#include "common/scoped_ptr.h" -#include "common/using_std_string.h" -#include "processor/module_factory.h" -#include "processor/simple_serializer-inl.h" - -using std::map; -using std::make_pair; - -namespace google_breakpad { - -FastSourceLineResolver::FastSourceLineResolver() - : SourceLineResolverBase(new FastModuleFactory) { } - -bool FastSourceLineResolver::ShouldDeleteMemoryBufferAfterLoadModule() { - return false; -} - -void FastSourceLineResolver::Module::LookupAddress(StackFrame *frame) const { - MemAddr address = frame->instruction - frame->module->base_address(); - - // First, look for a FUNC record that covers address. Use - // RetrieveNearestRange instead of RetrieveRange so that, if there - // is no such function, we can use the next function to bound the - // extent of the PUBLIC symbol we find, below. This does mean we - // need to check that address indeed falls within the function we - // find; do the range comparison in an overflow-friendly way. - scoped_ptr<Function> func(new Function); - const Function* func_ptr = 0; - scoped_ptr<PublicSymbol> public_symbol(new PublicSymbol); - const PublicSymbol* public_symbol_ptr = 0; - MemAddr function_base; - MemAddr function_size; - MemAddr public_address; - - if (functions_.RetrieveNearestRange(address, func_ptr, - &function_base, &function_size) && - address >= function_base && address - function_base < function_size) { - func.get()->CopyFrom(func_ptr); - frame->function_name = func->name; - frame->function_base = frame->module->base_address() + function_base; - - scoped_ptr<Line> line(new Line); - const Line* line_ptr = 0; - MemAddr line_base; - if (func->lines.RetrieveRange(address, line_ptr, &line_base, NULL)) { - line.get()->CopyFrom(line_ptr); - FileMap::iterator it = files_.find(line->source_file_id); - if (it != files_.end()) { - frame->source_file_name = - files_.find(line->source_file_id).GetValuePtr(); - } - frame->source_line = line->line; - frame->source_line_base = frame->module->base_address() + line_base; - } - } else if (public_symbols_.Retrieve(address, - public_symbol_ptr, &public_address) && - (!func_ptr || public_address > function_base)) { - public_symbol.get()->CopyFrom(public_symbol_ptr); - frame->function_name = public_symbol->name; - frame->function_base = frame->module->base_address() + public_address; - } -} - -// WFI: WindowsFrameInfo. -// Returns a WFI object reading from a raw memory chunk of data -WindowsFrameInfo FastSourceLineResolver::CopyWFI(const char *raw) { - const WindowsFrameInfo::StackInfoTypes type = - static_cast<const WindowsFrameInfo::StackInfoTypes>( - *reinterpret_cast<const int32_t*>(raw)); - - // The first 8 bytes of int data are unused. - // They correspond to "StackInfoTypes type_;" and "int valid;" - // data member of WFI. - const uint32_t *para_uint32 = reinterpret_cast<const uint32_t*>( - raw + 2 * sizeof(int32_t)); - - uint32_t prolog_size = para_uint32[0];; - uint32_t epilog_size = para_uint32[1]; - uint32_t parameter_size = para_uint32[2]; - uint32_t saved_register_size = para_uint32[3]; - uint32_t local_size = para_uint32[4]; - uint32_t max_stack_size = para_uint32[5]; - const char *boolean = reinterpret_cast<const char*>(para_uint32 + 6); - bool allocates_base_pointer = (*boolean != 0); - string program_string = boolean + 1; - - return WindowsFrameInfo(type, - prolog_size, - epilog_size, - parameter_size, - saved_register_size, - local_size, - max_stack_size, - allocates_base_pointer, - program_string); -} - -// Loads a map from the given buffer in char* type. -// Does NOT take ownership of mem_buffer. -// In addition, treat mem_buffer as const char*. -bool FastSourceLineResolver::Module::LoadMapFromMemory( - char *memory_buffer, - size_t memory_buffer_size) { - if (!memory_buffer) return false; - - // Read the "is_corrupt" flag. - const char *mem_buffer = memory_buffer; - mem_buffer = SimpleSerializer<bool>::Read(mem_buffer, &is_corrupt_); - - const uint32_t *map_sizes = reinterpret_cast<const uint32_t*>(mem_buffer); - - unsigned int header_size = kNumberMaps_ * sizeof(unsigned int); - - // offsets[]: an array of offset addresses (with respect to mem_buffer), - // for each "Static***Map" component of Module. - // "Static***Map": static version of std::map or map wrapper, i.e., StaticMap, - // StaticAddressMap, StaticContainedRangeMap, and StaticRangeMap. - unsigned int offsets[kNumberMaps_]; - offsets[0] = header_size; - for (int i = 1; i < kNumberMaps_; ++i) { - offsets[i] = offsets[i - 1] + map_sizes[i - 1]; - } - - // Use pointers to construct Static*Map data members in Module: - int map_id = 0; - files_ = StaticMap<int, char>(mem_buffer + offsets[map_id++]); - functions_ = - StaticRangeMap<MemAddr, Function>(mem_buffer + offsets[map_id++]); - public_symbols_ = - StaticAddressMap<MemAddr, PublicSymbol>(mem_buffer + offsets[map_id++]); - for (int i = 0; i < WindowsFrameInfo::STACK_INFO_LAST; ++i) - windows_frame_info_[i] = - StaticContainedRangeMap<MemAddr, char>(mem_buffer + offsets[map_id++]); - - cfi_initial_rules_ = - StaticRangeMap<MemAddr, char>(mem_buffer + offsets[map_id++]); - cfi_delta_rules_ = StaticMap<MemAddr, char>(mem_buffer + offsets[map_id++]); - - return true; -} - -WindowsFrameInfo *FastSourceLineResolver::Module::FindWindowsFrameInfo( - const StackFrame *frame) const { - MemAddr address = frame->instruction - frame->module->base_address(); - scoped_ptr<WindowsFrameInfo> result(new WindowsFrameInfo()); - - // We only know about WindowsFrameInfo::STACK_INFO_FRAME_DATA and - // WindowsFrameInfo::STACK_INFO_FPO. Prefer them in this order. - // WindowsFrameInfo::STACK_INFO_FRAME_DATA is the newer type that - // includes its own program string. - // WindowsFrameInfo::STACK_INFO_FPO is the older type - // corresponding to the FPO_DATA struct. See stackwalker_x86.cc. - const char* frame_info_ptr; - if ((windows_frame_info_[WindowsFrameInfo::STACK_INFO_FRAME_DATA] - .RetrieveRange(address, frame_info_ptr)) - || (windows_frame_info_[WindowsFrameInfo::STACK_INFO_FPO] - .RetrieveRange(address, frame_info_ptr))) { - result->CopyFrom(CopyWFI(frame_info_ptr)); - return result.release(); - } - - // Even without a relevant STACK line, many functions contain - // information about how much space their parameters consume on the - // stack. Use RetrieveNearestRange instead of RetrieveRange, so that - // we can use the function to bound the extent of the PUBLIC symbol, - // below. However, this does mean we need to check that ADDRESS - // falls within the retrieved function's range; do the range - // comparison in an overflow-friendly way. - scoped_ptr<Function> function(new Function); - const Function* function_ptr = 0; - MemAddr function_base, function_size; - if (functions_.RetrieveNearestRange(address, function_ptr, - &function_base, &function_size) && - address >= function_base && address - function_base < function_size) { - function.get()->CopyFrom(function_ptr); - result->parameter_size = function->parameter_size; - result->valid |= WindowsFrameInfo::VALID_PARAMETER_SIZE; - return result.release(); - } - - // PUBLIC symbols might have a parameter size. Use the function we - // found above to limit the range the public symbol covers. - scoped_ptr<PublicSymbol> public_symbol(new PublicSymbol); - const PublicSymbol* public_symbol_ptr = 0; - MemAddr public_address; - if (public_symbols_.Retrieve(address, public_symbol_ptr, &public_address) && - (!function_ptr || public_address > function_base)) { - public_symbol.get()->CopyFrom(public_symbol_ptr); - result->parameter_size = public_symbol->parameter_size; - } - - return NULL; -} - -CFIFrameInfo *FastSourceLineResolver::Module::FindCFIFrameInfo( - const StackFrame *frame) const { - MemAddr address = frame->instruction - frame->module->base_address(); - MemAddr initial_base, initial_size; - const char* initial_rules = NULL; - - // Find the initial rule whose range covers this address. That - // provides an initial set of register recovery rules. Then, walk - // forward from the initial rule's starting address to frame's - // instruction address, applying delta rules. - if (!cfi_initial_rules_.RetrieveRange(address, initial_rules, - &initial_base, &initial_size)) { - return NULL; - } - - // Create a frame info structure, and populate it with the rules from - // the STACK CFI INIT record. - scoped_ptr<CFIFrameInfo> rules(new CFIFrameInfo()); - if (!ParseCFIRuleSet(initial_rules, rules.get())) - return NULL; - - // Find the first delta rule that falls within the initial rule's range. - StaticMap<MemAddr, char>::iterator delta = - cfi_delta_rules_.lower_bound(initial_base); - - // Apply delta rules up to and including the frame's address. - while (delta != cfi_delta_rules_.end() && delta.GetKey() <= address) { - ParseCFIRuleSet(delta.GetValuePtr(), rules.get()); - delta++; - } - - return rules.release(); -} - -} // namespace google_breakpad |