mirror of https://github.com/google/oss-fuzz.git
138 lines
5.5 KiB
Bash
138 lines
5.5 KiB
Bash
#!/bin/bash -eux
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#
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# Copyright 2017 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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################################################################################
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readonly FUZZERS=( \
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clang-fuzzer \
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clang-format-fuzzer \
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clang-objc-fuzzer \
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clangd-fuzzer \
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llvm-itanium-demangle-fuzzer \
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llvm-microsoft-demangle-fuzzer \
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llvm-dwarfdump-fuzzer \
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llvm-isel-fuzzer \
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llvm-special-case-list-fuzzer \
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llvm-opt-fuzzer \
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)
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case $SANITIZER in
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address) LLVM_SANITIZER="Address" ;;
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undefined) LLVM_SANITIZER="Undefined" ;;
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memory) LLVM_SANITIZER="MemoryWithOrigins" ;;
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*) LLVM_SANITIZER="" ;;
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esac
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case "${LIB_FUZZING_ENGINE}" in
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-fsanitize=fuzzer) CMAKE_FUZZING_CONFIG="-DLLVM_USE_SANITIZE_COVERAGE=ON" ;;
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*) CMAKE_FUZZING_CONFIG="-DLLVM_LIB_FUZZING_ENGINE=${LIB_FUZZING_ENGINE}" ;;
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esac
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LLVM=llvm-project/llvm
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mkdir build
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cd build
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cmake -GNinja -DCMAKE_BUILD_TYPE=Release ../$LLVM \
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-DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi;compiler-rt;lld;clang-tools-extra" \
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-DLLVM_ENABLE_ASSERTIONS=ON \
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-DCMAKE_C_COMPILER="${CC}" \
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-DCMAKE_CXX_COMPILER="${CXX}" \
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-DCMAKE_C_FLAGS="${CFLAGS}" \
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-DCMAKE_CXX_FLAGS="${CXXFLAGS}" \
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"${CMAKE_FUZZING_CONFIG}" \
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-DLLVM_NO_DEAD_STRIP=ON \
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-DLLVM_USE_SANITIZER="${LLVM_SANITIZER}" \
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-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=WebAssembly
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for fuzzer in "${FUZZERS[@]}"; do
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ninja $fuzzer
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cp bin/$fuzzer $OUT
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done
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ninja llvm-as
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# isel-fuzzer encodes its default flags in the name.
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cp $OUT/llvm-isel-fuzzer $OUT/llvm-isel-fuzzer--aarch64-O2
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cp $OUT/llvm-isel-fuzzer $OUT/llvm-isel-fuzzer--x86_64-O2
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cp $OUT/llvm-isel-fuzzer $OUT/llvm-isel-fuzzer--wasm32-O2
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mv $OUT/llvm-isel-fuzzer $OUT/llvm-isel-fuzzer--aarch64-gisel
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# Same for llvm-opt-fuzzer
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-earlycse
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-simplifycfg
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-gvn
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-sccp
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-loop_predication
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-guard_widening
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-loop_vectorize
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-loop_rotate
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-loop_unswitch
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-loop_unroll
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-licm
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-indvars
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-strength_reduce
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cp $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-irce
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mv $OUT/llvm-opt-fuzzer $OUT/llvm-opt-fuzzer--x86_64-instcombine
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# Build corpus for the llvm-opt-fuzzer
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function build_corpus {
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local lit_path="${1}"
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local fuzzer_name="${2}"
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[[ -e "${WORK}/corpus-tmp" ]] && rm -r "${WORK}/corpus-tmp"
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mkdir "${WORK}/corpus-tmp"
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cd "${SRC}"
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# Compile all lit tests into bitcode. Ignore possible llvm-as failures.
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find "${lit_path}" -name "*.ll" -print0 |
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xargs -t -i -0 -n1 sh -c "build/bin/llvm-as "{}" || true"
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# Move freshly created bitcode into temp directory.
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find "${lit_path}" -name "*.bc" -print0 |
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xargs -t -i -0 -n1 mv "{}" "${WORK}/corpus-tmp"
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# Archive the corpus.
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zip -j "${OUT}/${fuzzer_name}_seed_corpus.zip" "${WORK}"/corpus-tmp/*
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rm -r "${WORK}/corpus-tmp"
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echo -e "[libfuzzer]\nmax_len = 0" > "${OUT}"/"${fuzzer_name}".options
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}
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build_corpus "$LLVM/test/Transforms/InstCombine/" "llvm-opt-fuzzer--x86_64-instcombine"
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build_corpus "$LLVM/test/Transforms/EarlyCSE/" "llvm-opt-fuzzer--x86_64-earlycse"
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build_corpus "$LLVM/test/Transforms/SimplifyCFG/" "llvm-opt-fuzzer--x86_64-simplifycfg"
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build_corpus "$LLVM/test/Transforms/GVN/" "llvm-opt-fuzzer--x86_64-gvn"
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build_corpus "$LLVM/test/Transforms/SCCP/" "llvm-opt-fuzzer--x86_64-sccp"
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build_corpus "$LLVM/test/Transforms/LoopPredication/" "llvm-opt-fuzzer--x86_64-loop_predication"
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build_corpus "$LLVM/test/Transforms/GuardWidening/" "llvm-opt-fuzzer--x86_64-guard_widening"
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build_corpus "$LLVM/test/Transforms/LoopVectorize/" "llvm-opt-fuzzer--x86_64-loop_vectorize"
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build_corpus "$LLVM/test/Transforms/LoopRotate/" "llvm-opt-fuzzer--x86_64-llvm-opt-fuzzer--x86_64-loop_rotate"
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build_corpus "$LLVM/test/Transforms/LoopUnswitch/" "llvm-opt-fuzzer--x86_64-llvm-opt-fuzzer--x86_64-loop_unswitch"
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build_corpus "$LLVM/test/Transforms/LoopUnroll/" "llvm-opt-fuzzer--x86_64-llvm-opt-fuzzer--x86_64-loop_unroll"
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build_corpus "$LLVM/test/Transforms/LICM/" "llvm-opt-fuzzer--x86_64-llvm-opt-fuzzer--x86_64-licm"
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build_corpus "$LLVM/test/Transforms/IndVarSimplify/" "llvm-opt-fuzzer--x86_64-llvm-opt-fuzzer--x86_64-indvars"
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build_corpus "$LLVM/test/Transforms/LoopStrengthReduce/" "llvm-opt-fuzzer--x86_64-llvm-opt-fuzzer--x86_64-strength_reduce"
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build_corpus "$LLVM/test/Transforms/IRCE/" "llvm-opt-fuzzer--x86_64-llvm-opt-fuzzer--x86_64-irce"
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zip -j "${OUT}/clang-objc-fuzzer_seed_corpus.zip" $SRC/$LLVM/../clang/tools/clang-fuzzer/corpus_examples/objc/*
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zip -j "${OUT}/clangd-fuzzer_seed_corpus.zip" $SRC/$LLVM/../clang-tools-extra/clangd/test/*
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