Keep only base/extractor.[cc|h].

third_party/breakpad/src/google_breakpad/processor/stack_frame.h

-// Copyright (c) 2006, 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.
-
-#ifndef GOOGLE_BREAKPAD_PROCESSOR_STACK_FRAME_H__
-#define GOOGLE_BREAKPAD_PROCESSOR_STACK_FRAME_H__
-
-#include <string>
-#include "google_breakpad/common/breakpad_types.h"
-
-namespace google_breakpad {
-
-class CodeModule;
-
-using std::string;
-
-struct StackFrame {
-  // Indicates how well the instruction pointer derived during
-  // stack walking is trusted. Since the stack walker can resort to
-  // stack scanning, it can wind up with dubious frames.
-  // In rough order of "trust metric".
-  enum FrameTrust {
-    FRAME_TRUST_NONE,     // Unknown
-    FRAME_TRUST_SCAN,     // Scanned the stack, found this
-    FRAME_TRUST_CFI_SCAN, // Scanned the stack using call frame info, found this
-    FRAME_TRUST_FP,       // Derived from frame pointer
-    FRAME_TRUST_CFI,      // Derived from call frame info
-    FRAME_TRUST_CONTEXT   // Given as instruction pointer in a context
-  };
-
-  StackFrame()
-      : instruction(),
-        module(NULL),
-        function_name(),
-        function_base(),
-        source_file_name(),
-        source_line(),
-        source_line_base(),
-        trust(FRAME_TRUST_NONE) {}
-  virtual ~StackFrame() {}
-
-  // Return a string describing how this stack frame was found
-  // by the stackwalker.
-  string trust_description() const {
-    switch (trust) {
-      case StackFrame::FRAME_TRUST_CONTEXT:
-        return "given as instruction pointer in context";
-      case StackFrame::FRAME_TRUST_CFI:
-        return "call frame info";
-      case StackFrame::FRAME_TRUST_CFI_SCAN:
-        return "call frame info with scanning";
-      case StackFrame::FRAME_TRUST_FP:
-        return "previous frame's frame pointer";
-      case StackFrame::FRAME_TRUST_SCAN:
-        return "stack scanning";
-      default:
-        return "unknown";
-    }
-  };
-
-  // The program counter location as an absolute virtual address.  For the
-  // innermost called frame in a stack, this will be an exact program counter
-  // or instruction pointer value.  For all other frames, this will be within
-  // the instruction that caused execution to branch to a called function,
-  // but may not necessarily point to the exact beginning of that instruction.
-  u_int64_t instruction;
-
-  // The module in which the instruction resides.
-  const CodeModule *module;
-
-  // The function name, may be omitted if debug symbols are not available.
-  string function_name;
-
-  // The start address of the function, may be omitted if debug symbols
-  // are not available.
-  u_int64_t function_base;
-
-  // The source file name, may be omitted if debug symbols are not available.
-  string source_file_name;
-
-  // The (1-based) source line number, may be omitted if debug symbols are
-  // not available.
-  int source_line;
-
-  // The start address of the source line, may be omitted if debug symbols
-  // are not available.
-  u_int64_t source_line_base;
-
-  // Amount of trust the stack walker has in the instruction pointer
-  // of this frame.
-  FrameTrust trust;
-};
-
-}  // namespace google_breakpad
-
-#endif  // GOOGLE_BREAKPAD_PROCESSOR_STACK_FRAME_H__