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4febb34583
sed -i '' -E -e 's/Copyright (\(c\) )?([0-9-]+),? (Google|The Chromium Authors).*(\r)?$/Copyright \2 Google LLC\4/' -e '/^((\/\/|#| \*) )?All rights reserved\.?\r?$/d' -e 's/name of Google Inc\. nor the/name of Google LLC nor the/' -e 's/POSSIBILITY OF SUCH DAMAGE$/POSSIBILITY OF SUCH DAMAGE./' $(git grep -El 'Copyright (\(c\) )?([0-9-]+),? (Google|The Chromium Authors).*$')
Plus manual fixes for src/processor/disassembler_x86.{cc,h}.
Plus some conversions from CRLF to LF line endings in .cc and .h files.
Bug: chromium:1098010
Change-Id: I8030e804eecd9f5a1ec9d66ae166efd8418c2a67
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/3878302
Reviewed-by: Mike Frysinger <vapier@chromium.org>
119 lines
4.6 KiB
C++
119 lines
4.6 KiB
C++
// -*- mode: C++ -*-
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// Copyright 2010 Google LLC
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google LLC nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
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// cfi_frame_info-inl.h: Definitions for cfi_frame_info.h inlined functions.
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#ifndef PROCESSOR_CFI_FRAME_INFO_INL_H_
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#define PROCESSOR_CFI_FRAME_INFO_INL_H_
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#include <string.h>
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namespace google_breakpad {
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template <typename RegisterType, class RawContextType>
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bool SimpleCFIWalker<RegisterType, RawContextType>::FindCallerRegisters(
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const MemoryRegion& memory,
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const CFIFrameInfo& cfi_frame_info,
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const RawContextType& callee_context,
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int callee_validity,
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RawContextType* caller_context,
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int* caller_validity) const {
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typedef CFIFrameInfo::RegisterValueMap<RegisterType> ValueMap;
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ValueMap callee_registers;
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ValueMap caller_registers;
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// Just for brevity.
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typename ValueMap::const_iterator caller_none = caller_registers.end();
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// Populate callee_registers with register values from callee_context.
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for (size_t i = 0; i < map_size_; i++) {
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const RegisterSet& r = register_map_[i];
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if (callee_validity & r.validity_flag)
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callee_registers[r.name] = callee_context.*r.context_member;
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}
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// Apply the rules, and see what register values they yield.
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if (!cfi_frame_info.FindCallerRegs<RegisterType>(callee_registers, memory,
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&caller_registers))
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return false;
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// Populate *caller_context with the values the rules placed in
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// caller_registers.
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memset(caller_context, 0xda, sizeof(*caller_context));
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*caller_validity = 0;
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for (size_t i = 0; i < map_size_; i++) {
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const RegisterSet& r = register_map_[i];
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typename ValueMap::const_iterator caller_entry;
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// Did the rules provide a value for this register by its name?
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caller_entry = caller_registers.find(r.name);
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if (caller_entry != caller_none) {
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caller_context->*r.context_member = caller_entry->second;
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*caller_validity |= r.validity_flag;
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continue;
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}
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// Did the rules provide a value for this register under its
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// alternate name?
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if (r.alternate_name) {
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caller_entry = caller_registers.find(r.alternate_name);
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if (caller_entry != caller_none) {
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caller_context->*r.context_member = caller_entry->second;
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*caller_validity |= r.validity_flag;
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continue;
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}
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}
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// Is this a callee-saves register? The walker assumes that these
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// still hold the caller's value if the CFI doesn't mention them.
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//
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// Note that other frame walkers may fail to recover callee-saves
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// registers; for example, the x86 "traditional" strategy only
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// recovers %eip, %esp, and %ebp, even though %ebx, %esi, and %edi
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// are callee-saves, too. It is not correct to blindly set the
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// valid bit for all callee-saves registers, without first
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// checking its validity bit in the callee.
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if (r.callee_saves && (callee_validity & r.validity_flag) != 0) {
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caller_context->*r.context_member = callee_context.*r.context_member;
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*caller_validity |= r.validity_flag;
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continue;
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}
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// Otherwise, the register's value is unknown.
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}
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return true;
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}
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} // namespace google_breakpad
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#endif // PROCESSOR_CFI_FRAME_INFO_INL_H_
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