compiler-rt/test/hwasan/lit.cfg.py

   1 # -*- Python -*-
   2
   3 import os
   4
   5 # Setup config name.
   6 config.name = "HWAddressSanitizer" + getattr(config, "name_suffix", "default")
   7
   8 # Setup source root.
   9 config.test_source_root = os.path.dirname(__file__)
  10
  11 # Setup default compiler flags used with -fsanitize=memory option.
  12 clang_cflags = [config.target_cflags] + config.debug_info_flags
  13 clang_cxxflags = config.cxx_mode_flags + clang_cflags
  14 clang_hwasan_common_cflags = clang_cflags + ["-fsanitize=hwaddress", "-fuse-ld=lld"]
  15
  16 if config.target_arch == "x86_64" and config.enable_aliases != "0":
  17     clang_hwasan_common_cflags += ["-fsanitize-hwaddress-experimental-aliasing"]
  18 else:
  19     config.available_features.add("pointer-tagging")
  20 if config.target_arch == "x86_64":
  21     # The callback instrumentation used on x86_64 has a 1/64 chance of choosing a
  22     # stack tag of 0.  This causes stack tests to become flaky, so we force tags
  23     # to be generated via calls to __hwasan_generate_tag, which never returns 0.
  24     # TODO: See if we can remove this once we use the outlined instrumentation.
  25     clang_hwasan_common_cflags += ["-mllvm", "-hwasan-generate-tags-with-calls=1"]
  26 clang_hwasan_cflags = clang_hwasan_common_cflags + [
  27     "-mllvm",
  28     "-hwasan-globals",
  29     "-mllvm",
  30     "-hwasan-use-short-granules",
  31     "-mllvm",
  32     "-hwasan-instrument-landing-pads=0",
  33     "-mllvm",
  34     "-hwasan-instrument-personality-functions",
  35 ]
  36 clang_hwasan_oldrt_cflags = clang_hwasan_common_cflags + [
  37     "-mllvm",
  38     "-hwasan-use-short-granules=0",
  39     "-mllvm",
  40     "-hwasan-instrument-landing-pads=1",
  41     "-mllvm",
  42     "-hwasan-instrument-personality-functions=0",
  43 ]
  44
  45 clang_hwasan_cxxflags = config.cxx_mode_flags + clang_hwasan_cflags
  46 clang_hwasan_oldrt_cxxflags = config.cxx_mode_flags + clang_hwasan_oldrt_cflags
  47
  48
  49 def build_invocation(compile_flags):
  50     return " " + " ".join([config.clang] + compile_flags) + " "
  51
  52
  53 config.substitutions.append(("%clangxx ", build_invocation(clang_cxxflags)))
  54 config.substitutions.append(("%clang_hwasan ", build_invocation(clang_hwasan_cflags)))
  55 config.substitutions.append(
  56     ("%clang_hwasan_oldrt ", build_invocation(clang_hwasan_oldrt_cflags))
  57 )
  58 config.substitutions.append(
  59     ("%clangxx_hwasan ", build_invocation(clang_hwasan_cxxflags))
  60 )
  61 config.substitutions.append(
  62     ("%clangxx_hwasan_oldrt ", build_invocation(clang_hwasan_oldrt_cxxflags))
  63 )
  64 config.substitutions.append(("%compiler_rt_libdir", config.compiler_rt_libdir))
  65
  66 default_hwasan_opts_str = ":".join(
  67     ["disable_allocator_tagging=1", "random_tags=0", "fail_without_syscall_abi=0"]
  68     + config.default_sanitizer_opts
  69 )
  70 if default_hwasan_opts_str:
  71     config.environment["HWASAN_OPTIONS"] = default_hwasan_opts_str
  72     default_hwasan_opts_str += ":"
  73 config.substitutions.append(
  74     ("%env_hwasan_opts=", "env HWASAN_OPTIONS=" + default_hwasan_opts_str)
  75 )
  76
  77 # Default test suffixes.
  78 config.suffixes = [".c", ".cpp"]
  79
  80 if config.host_os not in ["Linux", "Android"] or not config.has_lld:
  81     config.unsupported = True