1# -*- Python -*- 2 3import os 4import platform 5 6import lit.formats 7 8def get_required_attr(config, attr_name): 9 attr_value = getattr(config, attr_name, None) 10 if attr_value == None: 11 lit_config.fatal( 12 "No attribute %r in test configuration! You may need to run " 13 "tests from your build directory or add this attribute " 14 "to lit.site.cfg " % attr_name) 15 return attr_value 16 17def push_dynamic_library_lookup_path(config, new_path): 18 if platform.system() == 'Windows': 19 dynamic_library_lookup_var = 'PATH' 20 elif platform.system() == 'Darwin': 21 dynamic_library_lookup_var = 'DYLD_LIBRARY_PATH' 22 else: 23 dynamic_library_lookup_var = 'LD_LIBRARY_PATH' 24 25 new_ld_library_path = os.path.pathsep.join( 26 (new_path, config.environment.get(dynamic_library_lookup_var, ''))) 27 config.environment[dynamic_library_lookup_var] = new_ld_library_path 28 29# Setup config name. 30config.name = 'AddressSanitizer' + config.name_suffix 31 32# Platform-specific default ASAN_OPTIONS for lit tests. 33default_asan_opts = '' 34if config.host_os == 'Darwin': 35 # On Darwin, we default to `abort_on_error=1`, which would make tests run 36 # much slower. Let's override this and run lit tests with 'abort_on_error=0'. 37 # Also, make sure we do not overwhelm the syslog while testing. 38 default_asan_opts = 'abort_on_error=0' 39 default_asan_opts += ':log_to_syslog=0' 40if default_asan_opts: 41 config.environment['ASAN_OPTIONS'] = default_asan_opts 42 default_asan_opts += ':' 43config.substitutions.append(('%env_asan_opts=', 44 'env ASAN_OPTIONS=' + default_asan_opts)) 45 46# Setup source root. 47config.test_source_root = os.path.dirname(__file__) 48 49# There is no libdl on FreeBSD. 50if config.host_os != 'FreeBSD': 51 libdl_flag = "-ldl" 52else: 53 libdl_flag = "" 54 55# GCC-ASan doesn't link in all the necessary libraries automatically, so 56# we have to do it ourselves. 57if config.compiler_id == 'GNU': 58 extra_linkflags = ["-pthread", "-lstdc++", libdl_flag] 59else: 60 extra_linkflags = [] 61 62# BFD linker in 64-bit android toolchains fails to find libm.so, which is a 63# transitive shared library dependency (via asan runtime). 64if config.android: 65 extra_linkflags += ["-lm"] 66 67# Setup default compiler flags used with -fsanitize=address option. 68# FIXME: Review the set of required flags and check if it can be reduced. 69target_cflags = [get_required_attr(config, "target_cflags")] + extra_linkflags 70target_cxxflags = config.cxx_mode_flags + target_cflags 71clang_asan_static_cflags = (["-fsanitize=address", 72 "-mno-omit-leaf-frame-pointer", 73 "-fno-omit-frame-pointer", 74 "-fno-optimize-sibling-calls"] + 75 config.debug_info_flags + target_cflags) 76clang_asan_static_cxxflags = config.cxx_mode_flags + clang_asan_static_cflags 77 78if config.asan_dynamic: 79 clang_asan_cflags = clang_asan_static_cflags + ['-shared-libasan'] 80 clang_asan_cxxflags = clang_asan_static_cxxflags + ['-shared-libasan'] 81 config.available_features.add("asan-dynamic-runtime") 82else: 83 clang_asan_cflags = clang_asan_static_cflags 84 clang_asan_cxxflags = clang_asan_static_cxxflags 85 config.available_features.add("asan-static-runtime") 86 87asan_lit_source_dir = get_required_attr(config, "asan_lit_source_dir") 88if config.android == "1": 89 config.available_features.add('android') 90 clang_wrapper = os.path.join(asan_lit_source_dir, 91 "android_commands", "android_compile.py") + " " 92else: 93 config.available_features.add('not-android') 94 clang_wrapper = "" 95 96def build_invocation(compile_flags): 97 return " " + " ".join([clang_wrapper, config.clang] + compile_flags) + " " 98 99config.substitutions.append( ("%clang ", build_invocation(target_cflags)) ) 100config.substitutions.append( ("%clangxx ", build_invocation(target_cxxflags)) ) 101config.substitutions.append( ("%clang_asan ", build_invocation(clang_asan_cflags)) ) 102config.substitutions.append( ("%clangxx_asan ", build_invocation(clang_asan_cxxflags)) ) 103config.substitutions.append( ("%shared_libasan", "libclang_rt.asan-%s.so" % config.target_arch)) 104if config.asan_dynamic: 105 config.substitutions.append( ("%clang_asan_static ", build_invocation(clang_asan_static_cflags)) ) 106 config.substitutions.append( ("%clangxx_asan_static ", build_invocation(clang_asan_static_cxxflags)) ) 107 108# Windows-specific tests might also use the clang-cl.exe driver. 109if platform.system() == 'Windows': 110 clang_cl_asan_cxxflags = ["-fsanitize=address", 111 "-Wno-deprecated-declarations", 112 "-WX", 113 "-D_HAS_EXCEPTIONS=0", 114 "-Zi"] + target_cflags 115 if config.asan_dynamic: 116 clang_cl_asan_cxxflags.append("-MD") 117 clang_invocation = build_invocation(clang_cl_asan_cxxflags) 118 clang_cl_invocation = clang_invocation.replace("clang.exe","clang-cl.exe") 119 config.substitutions.append( ("%clang_cl_asan ", clang_cl_invocation) ) 120 base_lib = os.path.join(config.compiler_rt_libdir, "clang_rt.asan%%s-%s.lib" % config.target_arch) 121 config.substitutions.append( ("%asan_lib", base_lib % "") ) 122 config.substitutions.append( ("%asan_cxx_lib", base_lib % "_cxx") ) 123 config.substitutions.append( ("%asan_dll_thunk", base_lib % "_dll_thunk") ) 124 125# FIXME: De-hardcode this path. 126asan_source_dir = os.path.join( 127 get_required_attr(config, "compiler_rt_src_root"), "lib", "asan") 128# Setup path to asan_symbolize.py script. 129asan_symbolize = os.path.join(asan_source_dir, "scripts", "asan_symbolize.py") 130if not os.path.exists(asan_symbolize): 131 lit_config.fatal("Can't find script on path %r" % asan_symbolize) 132python_exec = get_required_attr(config, "python_executable") 133config.substitutions.append( ("%asan_symbolize", python_exec + " " + asan_symbolize + " ") ) 134# Setup path to sancov.py script. 135sanitizer_common_source_dir = os.path.join( 136 get_required_attr(config, "compiler_rt_src_root"), "lib", "sanitizer_common") 137sancov = os.path.join(sanitizer_common_source_dir, "scripts", "sancov.py") 138if not os.path.exists(sancov): 139 lit_config.fatal("Can't find script on path %r" % sancov) 140python_exec = get_required_attr(config, "python_executable") 141config.substitutions.append( ("%sancov", python_exec + " " + sancov + " ") ) 142 143# Determine kernel bitness 144if config.host_arch.find('64') != -1 and config.android != "1": 145 kernel_bits = '64' 146else: 147 kernel_bits = '32' 148 149config.substitutions.append( ('CHECK-%kernel_bits', ("CHECK-kernel-" + kernel_bits + "-bits"))) 150 151config.substitutions.append( ("%libdl", libdl_flag) ) 152 153config.available_features.add("asan-" + config.bits + "-bits") 154 155if config.host_os == 'Darwin': 156 config.substitutions.append( ("%ld_flags_rpath_exe", '-Wl,-rpath,@executable_path/ %dynamiclib') ) 157 config.substitutions.append( ("%ld_flags_rpath_so", '-install_name @rpath/`basename %dynamiclib`') ) 158elif config.host_os == 'FreeBSD': 159 config.substitutions.append( ("%ld_flags_rpath_exe", "-Wl,-z,origin -Wl,-rpath,\$ORIGIN -L%T -l%xdynamiclib_namespec") ) 160 config.substitutions.append( ("%ld_flags_rpath_so", '') ) 161elif config.host_os == 'Linux': 162 config.substitutions.append( ("%ld_flags_rpath_exe", "-Wl,-rpath,\$ORIGIN -L%T -l%xdynamiclib_namespec") ) 163 config.substitutions.append( ("%ld_flags_rpath_so", '') ) 164 165# Must be defined after the substitutions that use %dynamiclib. 166config.substitutions.append( ("%dynamiclib", '%T/lib%xdynamiclib_namespec.so') ) 167config.substitutions.append( ("%xdynamiclib_namespec", '$(basename %t).dynamic') ) 168 169# Allow tests to use REQUIRES=stable-runtime. For use when you cannot use XFAIL 170# because the test hangs. Adding armhf as we now have two modes. 171if config.target_arch != 'arm' and config.target_arch != 'armhf' and config.target_arch != 'aarch64': 172 config.available_features.add('stable-runtime') 173 174# Turn on leak detection on 64-bit Linux. 175if config.host_os == 'Linux' and config.target_arch == 'x86_64': 176 config.available_features.add('leak-detection') 177 178# Set LD_LIBRARY_PATH to pick dynamic runtime up properly. 179push_dynamic_library_lookup_path(config, config.compiler_rt_libdir) 180 181# GCC-ASan uses dynamic runtime by default. 182if config.compiler_id == 'GNU': 183 gcc_dir = os.path.dirname(config.clang) 184 libasan_dir = os.path.join(gcc_dir, "..", "lib" + config.bits) 185 push_dynamic_library_lookup_path(config, libasan_dir) 186 187# Default test suffixes. 188config.suffixes = ['.c', '.cc', '.cpp'] 189 190if config.host_os == 'Darwin': 191 config.suffixes.append('.mm') 192 193# Only run the tests on supported OSs. 194if config.host_os not in ['Linux', 'Darwin', 'FreeBSD', 'Windows']: 195 config.unsupported = True 196