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Diffstat (limited to 'llvm_mode/Makefile')
| -rw-r--r-- | llvm_mode/Makefile | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/llvm_mode/Makefile b/llvm_mode/Makefile new file mode 100644 index 00000000..13a53463 --- /dev/null +++ b/llvm_mode/Makefile @@ -0,0 +1,121 @@ +# +# american fuzzy lop - LLVM instrumentation +# ----------------------------------------- +# +# Written by Laszlo Szekeres <lszekeres@google.com> and +# Michal Zalewski <lcamtuf@google.com> +# +# LLVM integration design comes from Laszlo Szekeres. +# +# Copyright 2015, 2016 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 +# + +PREFIX ?= /usr/local +HELPER_PATH = $(PREFIX)/lib/afl +BIN_PATH = $(PREFIX)/bin + +VERSION = $(shell grep '^\#define VERSION ' ../config.h | cut -d '"' -f2) + +LLVM_CONFIG ?= llvm-config + +CFLAGS ?= -O3 -funroll-loops +CFLAGS += -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign \ + -DAFL_PATH=\"$(HELPER_PATH)\" -DBIN_PATH=\"$(BIN_PATH)\" \ + -DVERSION=\"$(VERSION)\" +ifdef AFL_TRACE_PC + CFLAGS += -DUSE_TRACE_PC=1 +endif + +CXXFLAGS ?= -O3 -funroll-loops +CXXFLAGS += -Wall -D_FORTIFY_SOURCE=2 -g -Wno-pointer-sign \ + -DVERSION=\"$(VERSION)\" -Wno-variadic-macros + +CLANG_CFL = `$(LLVM_CONFIG) --cxxflags` -fno-rtti -fpic $(CXXFLAGS) +CLANG_LFL = `$(LLVM_CONFIG) --ldflags` $(LDFLAGS) + +# User teor2345 reports that this is required to make things work on MacOS X. + +ifeq "$(shell uname)" "Darwin" + CLANG_LFL += -Wl,-flat_namespace -Wl,-undefined,suppress +endif + +# We were using llvm-config --bindir to get the location of clang, but +# this seems to be busted on some distros, so using the one in $PATH is +# probably better. + +ifeq "$(origin CC)" "default" + CC = clang + CXX = clang++ +endif + +ifndef AFL_TRACE_PC + PROGS = ../afl-clang-fast ../afl-llvm-pass.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 +else + PROGS = ../afl-clang-fast ../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 +endif + +all: test_deps $(PROGS) test_build all_done + +test_deps: +ifndef AFL_TRACE_PC + @echo "[*] Checking for working 'llvm-config'..." + @which $(LLVM_CONFIG) >/dev/null 2>&1 || ( echo "[-] Oops, can't find 'llvm-config'. Install clang or set \$$LLVM_CONFIG or \$$PATH beforehand."; echo " (Sometimes, the binary will be named llvm-config-3.5 or something like that.)"; exit 1 ) +else + @echo "[!] Note: using -fsanitize=trace-pc mode (this will fail with older LLVM)." +endif + @echo "[*] Checking for working '$(CC)'..." + @which $(CC) >/dev/null 2>&1 || ( echo "[-] Oops, can't find '$(CC)'. Make sure that it's in your \$$PATH (or set \$$CC and \$$CXX)."; exit 1 ) + @echo "[*] Checking for '../afl-showmap'..." + @test -f ../afl-showmap || ( echo "[-] Oops, can't find '../afl-showmap'. Be sure to compile AFL first."; exit 1 ) + @echo "[+] All set and ready to build." + +../afl-clang-fast: afl-clang-fast.c | test_deps + $(CC) $(CFLAGS) $< -o $@ $(LDFLAGS) + ln -sf afl-clang-fast ../afl-clang-fast++ + +../afl-llvm-pass.so: afl-llvm-pass.so.cc | test_deps + $(CXX) $(CLANG_CFL) -shared $< -o $@ $(CLANG_LFL) + +# laf +../split-switches-pass.so: split-switches-pass.so.cc | test_deps + $(CXX) $(CLANG_CFL) -shared $< -o $@ $(CLANG_LFL) +../compare-transform-pass.so: compare-transform-pass.so.cc | test_deps + $(CXX) $(CLANG_CFL) -shared $< -o $@ $(CLANG_LFL) +../split-compares-pass.so: split-compares-pass.so.cc | test_deps + $(CXX) $(CLANG_CFL) -shared $< -o $@ $(CLANG_LFL) +# /laf + +../afl-llvm-rt.o: afl-llvm-rt.o.c | test_deps + $(CC) $(CFLAGS) -fPIC -c $< -o $@ + +../afl-llvm-rt-32.o: afl-llvm-rt.o.c | test_deps + @printf "[*] Building 32-bit variant of the runtime (-m32)... " + @$(CC) $(CFLAGS) -m32 -fPIC -c $< -o $@ 2>/dev/null; if [ "$$?" = "0" ]; then echo "success!"; else echo "failed (that's fine)"; fi + +../afl-llvm-rt-64.o: afl-llvm-rt.o.c | test_deps + @printf "[*] Building 64-bit variant of the runtime (-m64)... " + @$(CC) $(CFLAGS) -m64 -fPIC -c $< -o $@ 2>/dev/null; if [ "$$?" = "0" ]; then echo "success!"; else echo "failed (that's fine)"; fi + +test_build: $(PROGS) + @echo "[*] Testing the CC wrapper and instrumentation output..." + unset AFL_USE_ASAN AFL_USE_MSAN AFL_INST_RATIO; AFL_QUIET=1 AFL_PATH=. AFL_CC=$(CC) ../afl-clang-fast $(CFLAGS) ../test-instr.c -o test-instr $(LDFLAGS) + echo 0 | ../afl-showmap -m none -q -o .test-instr0 ./test-instr + echo 1 | ../afl-showmap -m none -q -o .test-instr1 ./test-instr + @rm -f test-instr + @cmp -s .test-instr0 .test-instr1; DR="$$?"; rm -f .test-instr0 .test-instr1; if [ "$$DR" = "0" ]; then echo; echo "Oops, the instrumentation does not seem to be behaving correctly!"; echo; echo "Please ping <lcamtuf@google.com> to troubleshoot the issue."; echo; exit 1; fi + @echo "[+] All right, the instrumentation seems to be working!" + +all_done: test_build + @echo "[+] All done! You can now use '../afl-clang-fast' to compile programs." + +.NOTPARALLEL: clean + +clean: + rm -f *.o *.so *~ a.out core core.[1-9][0-9]* test-instr .test-instr0 .test-instr1 + rm -f $(PROGS) ../afl-clang-fast++ |