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Merge pull request #518 from AFLplusplus/ltopcguard

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sancov ported to LTO
This commit is contained in:
van Hauser 2020-08-20 18:33:53 +02:00 committed by GitHub
commit f7bac482e9
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3 changed files with 1496 additions and 10 deletions
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6
llvm_mode/GNUmakefile
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@ -274,7 +274,7 @@ ifeq "$(TEST_MMAP)" "1"
LDFLAGS += -Wno-deprecated-declarations
endif
PROGS = ../afl-clang-fast ../afl-llvm-pass.so ../afl-ld-lto ../afl-llvm-lto-instrumentlist.so ../afl-llvm-lto-instrumentation.so ../afl-llvm-lto-instrim.so ../libLLVMInsTrim.so ../afl-llvm-rt.o ../afl-llvm-rt-32.o ../afl-llvm-rt-64.o ../compare-transform-pass.so ../split-compares-pass.so ../split-switches-pass.so ../cmplog-routines-pass.so ../cmplog-instructions-pass.so
PROGS = ../afl-clang-fast ../afl-llvm-pass.so ../afl-ld-lto ../afl-llvm-lto-instrumentlist.so ../afl-llvm-lto-instrumentation.so ../afl-llvm-lto-instrim.so ../libLLVMInsTrim.so ../afl-llvm-rt.o ../afl-llvm-rt-32.o ../afl-llvm-rt-64.o ../compare-transform-pass.so ../split-compares-pass.so ../split-switches-pass.so ../cmplog-routines-pass.so ../cmplog-instructions-pass.so ../SanitizerCoverageLTO.so
# If prerequisites are not given, warn, do not build anything, and exit with code 0
ifeq "$(LLVMVER)" ""
@ -363,6 +363,9 @@ ifeq "$(LLVM_LTO)" "1"
$(CC) $(CFLAGS) $< -o $@
endif
../SanitizerCoverageLTO.so: SanitizerCoverageLTO.so.cc
$(CXX) $(CLANG_CPPFL) -Wno-writable-strings -fno-rtti -fPIC -std=$(LLVM_STDCXX) -shared $< -o $@ $(CLANG_LFL) afl-llvm-common.o
../afl-llvm-lto-instrumentation.so: afl-llvm-lto-instrumentation.so.cc afl-llvm-common.o
ifeq "$(LLVM_LTO)" "1"
$(CXX) $(CLANG_CPPFL) -Wno-writable-strings -fno-rtti -fPIC -std=$(LLVM_STDCXX) -shared $< -o $@ $(CLANG_LFL) afl-llvm-common.o
@ -432,6 +435,7 @@ install: all
if [ -f ../split-compares-pass.so ]; then set -e; install -m 755 ../split-compares-pass.so $${DESTDIR}$(HELPER_PATH); fi
if [ -f ../split-switches-pass.so ]; then set -e; install -m 755 ../split-switches-pass.so $${DESTDIR}$(HELPER_PATH); fi
if [ -f ../cmplog-instructions-pass.so ]; then set -e; install -m 755 ../cmplog-*-pass.so $${DESTDIR}$(HELPER_PATH); fi
if [ -f ../SanitizerCoverageLTO.so ]; then set -e; install -m 755 ../SanitizerCoverageLTO.so $${DESTDIR}$(HELPER_PATH); fi
set -e; install -m 644 ../dynamic_list.txt $${DESTDIR}$(HELPER_PATH)
set -e; if [ -f ../afl-clang-fast ] ; then ln -sf ../afl-clang-fast $${DESTDIR}$(BIN_PATH)/afl-clang ; ln -sf ../afl-clang-fast $${DESTDIR}$(BIN_PATH)/afl-clang++ ; else ln -sf ../afl-gcc $${DESTDIR}$(BIN_PATH)/afl-clang ; ln -sf ../afl-gcc $${DESTDIR}$(BIN_PATH)/afl-clang++; fi
install -m 644 README.*.md $${DESTDIR}$(DOC_PATH)/

1485
llvm_mode/SanitizerCoverageLTO.so.cc Normal file
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15
llvm_mode/afl-clang-fast.c
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@ -363,16 +363,13 @@ static void edit_params(u32 argc, char **argv, char **envp) {
cc_params[cc_par_cnt++] = "-Wl,--allow-multiple-definition";
/*
The current LTO instrim mode is not good, so we disable it
if (instrument_mode == INSTRUMENT_CFG)
cc_params[cc_par_cnt++] =
alloc_printf("-Wl,-mllvm=-load=%s/afl-llvm-lto-instrim.so",
obj_path); else
*/
if (instrument_mode == INSTRUMENT_CFG)
cc_params[cc_par_cnt++] =
alloc_printf("-Wl,-mllvm=-load=%s/SanitizerCoverageLTO.so", obj_path);
else
cc_params[cc_par_cnt++] = alloc_printf(
"-Wl,-mllvm=-load=%s/afl-llvm-lto-instrumentation.so", obj_path);
cc_params[cc_par_cnt++] = alloc_printf(
"-Wl,-mllvm=-load=%s/afl-llvm-lto-instrumentation.so", obj_path);
cc_params[cc_par_cnt++] = lto_flag;
} else {