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_x86.h | |
| parent | 537296095ab24eddcb196b5ef98004f91de9c8c2 (diff) | |
Diffstat (limited to 'externals/breakpad/src/processor/stackwalker_x86.h')
| -rw-r--r-- | externals/breakpad/src/processor/stackwalker_x86.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/externals/breakpad/src/processor/stackwalker_x86.h b/externals/breakpad/src/processor/stackwalker_x86.h new file mode 100644 index 0000000000..1867a689b0 --- /dev/null +++ b/externals/breakpad/src/processor/stackwalker_x86.h @@ -0,0 +1,116 @@ +// -*- mode: c++ -*- + +// Copyright 2010 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_x86.h: x86-specific stackwalker. +// +// Provides stack frames given x86 register context and a memory region +// corresponding to an x86 stack. +// +// Author: Mark Mentovai + + +#ifndef PROCESSOR_STACKWALKER_X86_H__ +#define PROCESSOR_STACKWALKER_X86_H__ + +#include <vector> + +#include "google_breakpad/common/breakpad_types.h" +#include "google_breakpad/common/minidump_format.h" +#include "google_breakpad/processor/stackwalker.h" +#include "google_breakpad/processor/stack_frame_cpu.h" +#include "processor/cfi_frame_info.h" + +namespace google_breakpad { + +class CodeModules; + + +class StackwalkerX86 : public Stackwalker { + public: + // context is an x86 context object that gives access to x86-specific + // register state corresponding to the innermost called frame to be + // included in the stack. The other arguments are passed directly through + // to the base Stackwalker constructor. + StackwalkerX86(const SystemInfo* system_info, + const MDRawContextX86* context, + MemoryRegion* memory, + const CodeModules* modules, + StackFrameSymbolizer* frame_symbolizer); + + private: + // A STACK CFI-driven frame walker for the X86. + typedef SimpleCFIWalker<uint32_t, MDRawContextX86> CFIWalker; + + // Implementation of Stackwalker, using x86 context (%ebp, %esp, %eip) and + // stack conventions (saved %ebp at [%ebp], saved %eip at 4[%ebp], or + // alternate conventions as guided by any WindowsFrameInfo available for the + // code in question.). + virtual StackFrame* GetContextFrame(); + virtual StackFrame* GetCallerFrame(const CallStack* stack, + bool stack_scan_allowed); + + // Use windows_frame_info (derived from STACK WIN and FUNC records) + // to construct the frame that called frames.back(). The caller + // takes ownership of the returned frame. Return NULL on failure. + StackFrameX86* GetCallerByWindowsFrameInfo( + const vector<StackFrame*>& frames, + WindowsFrameInfo* windows_frame_info, + bool stack_scan_allowed); + + // Use cfi_frame_info (derived from STACK CFI records) to construct + // the frame that called frames.back(). The caller takes ownership + // of the returned frame. Return NULL on failure. + StackFrameX86* GetCallerByCFIFrameInfo(const vector<StackFrame*>& frames, + CFIFrameInfo* cfi_frame_info); + + // Assuming a traditional frame layout --- where the caller's %ebp + // has been pushed just after the return address and the callee's + // %ebp points to the saved %ebp --- construct the frame that called + // frames.back(). The caller takes ownership of the returned frame. + // Return NULL on failure. + StackFrameX86* GetCallerByEBPAtBase(const vector<StackFrame*>& frames, + bool stack_scan_allowed); + + // Stores the CPU context corresponding to the innermost stack frame to + // be returned by GetContextFrame. + const MDRawContextX86* context_; + + // Our register map, for cfi_walker_. + static const CFIWalker::RegisterSet cfi_register_map_[]; + + // Our CFI frame walker. + const CFIWalker cfi_walker_; +}; + + +} // namespace google_breakpad + + +#endif // PROCESSOR_STACKWALKER_X86_H__ |