Experimental DynamoRIO-MSAN plugin (codename "MSanDR").
Supports Linux/x86_64 only.
Building:
1. First, download and build DynamoRIO:
(svn co https://dynamorio.googlecode.com/svn/trunk dr && \
cd dr && mkdir build && cd build && \
cmake -DDR_EXT_DRMGR_STATIC=ON -DDR_EXT_DRSYMS_STATIC=ON \
-DDR_EXT_DRUTIL_STATIC=ON -DDR_EXT_DRWRAP_STATIC=ON \
-DDR_EXT_DRX_STATIC=ON .. && \
make -j10 && make install)
2. Download and build DrMemory (for DrSyscall extension)
(svn co http://drmemory.googlecode.com/svn/trunk/ drmemory && \
cd drmemory && mkdir build && cd build && \
cmake -DDynamoRIO_DIR=`pwd`/../../dr/exports/cmake .. && \
make -j10 && make install)
NOTE: The line above will build a shared DrSyscall library in a non-standard
location. This will require the use of LD_LIBRARY_PATH when running MSanDR.
To build a static DrSyscall library (and link it into MSanDR), add
-DDR_EXT_DRSYSCALL_STATIC=ON to the CMake invocation above, but
beware: DrSyscall is LGPL.
3. Now, build LLVM with two extra CMake flags:
-DDynamoRIO_DIR=<path_to_dynamorio>/exports/cmake
-DDrMemoryFramework_DIR=<path_to_drmemory>/exports64/drmf
This will build a lib/clang/$VERSION/lib/linux/libclang_rt.msandr-x86_64.so
Running:
<path_to_dynamorio>/exports/bin64/drrun -c lib/clang/$VERSION/lib/linux/libclang_rt.msandr-x86_64.so -- test_binary
MSan unit tests contain several tests for MSanDR (use MemorySanitizerDr.* gtest filter).
Debugging:
Add -DCMAKE_BUILD_TYPE=Debug to the first and/or second cmake invocation(s).
Add -debug -v to drrun invocation line (right before -c).
Add -checklevel 1 to drrun (as the first argument) to make debug DR faster.
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