diff options
| author | Dawid Potocki <dawid@dawidpotocki.com> | 2024-03-05 14:09:27 +1300 |
|---|---|---|
| committer | Dawid Potocki <dawid@dawidpotocki.com> | 2024-03-05 20:34:15 +1300 |
| commit | 063e15900bda8453fb0fc6751e78d064501ccbae (patch) | |
| tree | a4cd5f01dbca33a262333aff10e1e035217a30c8 /externals/breakpad/src/processor/stackwalker_address_list.cc | |
| parent | 537296095ab24eddcb196b5ef98004f91de9c8c2 (diff) | |
Diffstat (limited to 'externals/breakpad/src/processor/stackwalker_address_list.cc')
| -rw-r--r-- | externals/breakpad/src/processor/stackwalker_address_list.cc | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/externals/breakpad/src/processor/stackwalker_address_list.cc b/externals/breakpad/src/processor/stackwalker_address_list.cc new file mode 100644 index 0000000000..7c346c6655 --- /dev/null +++ b/externals/breakpad/src/processor/stackwalker_address_list.cc @@ -0,0 +1,95 @@ +// Copyright 2013 Google LLC +// +// 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 LLC 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. + +// stackwalker_address_list.cc: a pseudo stack walker. +// +// See stackwalker_address_list.h for documentation. +// +// Author: Chris Hamilton <chrisha@chromium.org> + +#ifdef HAVE_CONFIG_H +#include <config.h> // Must come first +#endif + +#include <assert.h> + +#include <vector> + +#include "google_breakpad/processor/call_stack.h" +#include "google_breakpad/processor/memory_region.h" +#include "google_breakpad/processor/source_line_resolver_interface.h" +#include "google_breakpad/processor/stack_frame.h" +#include "processor/logging.h" +#include "processor/stackwalker_address_list.h" + +namespace google_breakpad { + +StackwalkerAddressList::StackwalkerAddressList( + const uint64_t* frames, + size_t frame_count, + const CodeModules* modules, + StackFrameSymbolizer* frame_symbolizer) + : Stackwalker(NULL, NULL, modules, frame_symbolizer), + frames_(frames), + frame_count_(frame_count) { + assert(frames); + assert(frame_symbolizer); +} + +StackFrame* StackwalkerAddressList::GetContextFrame() { + if (frame_count_ == 0) + return NULL; + + StackFrame* frame = new StackFrame(); + frame->instruction = frames_[0]; + frame->trust = StackFrame::FRAME_TRUST_PREWALKED; + return frame; +} + +StackFrame* StackwalkerAddressList::GetCallerFrame(const CallStack* stack, + bool stack_scan_allowed) { + if (!stack) { + BPLOG(ERROR) << "Can't get caller frame without stack"; + return NULL; + } + + size_t frame_index = stack->frames()->size(); + + // There are no more frames to fetch. + if (frame_index >= frame_count_) + return NULL; + + // All frames have the highest level of trust because they were + // explicitly provided. + StackFrame* frame = new StackFrame(); + frame->instruction = frames_[frame_index]; + frame->trust = StackFrame::FRAME_TRUST_PREWALKED; + return frame; +} + +} // namespace google_breakpad |