Index: syzygy/experimental/protect/protect_lib/protected_basic_block_filter.cc |
diff --git a/syzygy/experimental/protect/protect_lib/protected_basic_block_filter.cc b/syzygy/experimental/protect/protect_lib/protected_basic_block_filter.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7046dbf4853c0eb33d18572640d6059ec23f389d |
--- /dev/null |
+++ b/syzygy/experimental/protect/protect_lib/protected_basic_block_filter.cc |
@@ -0,0 +1,82 @@ |
+// Copyright 2015 Google Inc. All Rights Reserved. |
+// |
+// Licensed under the Apache License, Version 2.0 (the "License"); |
+// you may not use this file except in compliance with the License. |
+// You may obtain a copy of the License at |
+// |
+// http://www.apache.org/licenses/LICENSE-2.0 |
+// |
+// Unless required by applicable law or agreed to in writing, software |
+// distributed under the License is distributed on an "AS IS" BASIS, |
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
+// See the License for the specific language governing permissions and |
+// limitations under the License. |
+ |
+#include "syzygy/protect/protect_lib/protected_basic_block_filter.h" |
+ |
+namespace protect { |
+ |
+ using block_graph::BlockGraph; |
+ using block_graph::BasicBlockSubGraph; |
+ using block_graph::BasicBlock; |
+ |
+ void ProtectedBBlockFilter::Add( |
+ std::pair<block_graph::BlockGraph::RelativeAddress, |
+ block_graph::BlockGraph::Size> &tuple) |
+ { |
+ this->filter.push_back(tuple); |
+ } |
+ |
+ bool ProtectedBBlockFilter::Filter( |
+ std::vector<BasicBlock *>& to_protect, |
+ BasicBlockSubGraph *subgraph) |
+ { |
+ std::vector < std::pair<BlockGraph::RelativeAddress, |
+ BlockGraph::Size> > ::iterator adr_range = filter.begin(); |
+ |
+ BlockGraph::RelativeAddress start_addr, block_addr; |
+ const BlockGraph::Block *original_block = subgraph->original_block(); |
+ |
+ if (original_block == NULL) // the subgraph is new; it has no original block |
+ return false; |
+ // else |
+ const BasicBlockSubGraph::BasicBlockOrdering& original_order = |
+ subgraph->block_descriptions().front().basic_block_order; |
+ BasicBlockSubGraph::BasicBlockOrdering::const_iterator bb_iter = |
+ original_order.begin(); |
+ for (; bb_iter != original_order.end(); ++bb_iter) { |
+ if ((*bb_iter)->type() != BasicBlock::BasicBlockType::BASIC_CODE_BLOCK) |
+ continue; |
+ |
+ const block_graph::BasicCodeBlock* bb = |
+ block_graph::BasicCodeBlock::Cast(*bb_iter); |
+ if (bb == NULL) |
+ continue; |
+ |
+ // BasicBlock is in the protected area, adding to the vector |
+ to_protect.push_back(*bb_iter); |
+ } |
+ |
+ return true; |
+ } |
+ |
+ std::string ProtectedBBlockFilter::ToString() |
+ { |
+ std::stringstream ss; |
+ |
+ ss << "Filter" << std::endl; |
+ ss << "size: " << filter.size() << std::endl << std::endl; |
+ |
+ for (size_t i = 0; i < filter.size(); ++i) { |
+ ss << "Entry " << i << std::endl; |
+ ss << " Addr: " << filter[i].first << std::endl; |
+ ss << " Size: " << filter[i].second << std::endl; |
+ } |
+ |
+ ss << std::endl; |
+ std::string ret = ss.str(); |
+ |
+ return ret; |
+ } |
+ |
+} // namespace protect |