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

   1 # -*- Python -*-
   2
   3 import os
   4
   5 from lit.llvm import llvm_config
   6 from lit.llvm.subst import ToolSubst, FindTool
   7
   8 # Setup config name.
   9 config.name = "HWAddressSanitizer" + getattr(config, "name_suffix", "default")
  10
  11 # Setup source root.
  12 config.test_source_root = os.path.dirname(__file__)
  13
  14 # Setup default compiler flags used with -fsanitize=memory option.
  15 clang_cflags = [config.target_cflags] + config.debug_info_flags
  16 clang_cxxflags = config.cxx_mode_flags + clang_cflags
  17 clang_hwasan_common_cflags = clang_cflags + ["-fsanitize=hwaddress", "-fuse-ld=lld"]
  18
  19 if config.target_arch == "x86_64" and config.enable_aliases != "0":
  20     clang_hwasan_common_cflags += ["-fsanitize-hwaddress-experimental-aliasing"]
  21 else:
  22     config.available_features.add("pointer-tagging")
  23 if config.target_arch == "x86_64":
  24     # The callback instrumentation used on x86_64 has a 1/64 chance of choosing a
  25     # stack tag of 0.  This causes stack tests to become flaky, so we force tags
  26     # to be generated via calls to __hwasan_generate_tag, which never returns 0.
  27     # TODO: See if we can remove this once we use the outlined instrumentation.
  28     clang_hwasan_common_cflags += ["-mllvm", "-hwasan-generate-tags-with-calls=1"]
  29 clang_hwasan_cflags = clang_hwasan_common_cflags + [
  30     "-mllvm",
  31     "-hwasan-globals",
  32     "-mllvm",
  33     "-hwasan-use-short-granules",
  34     "-mllvm",
  35     "-hwasan-instrument-landing-pads=0",
  36     "-mllvm",
  37     "-hwasan-instrument-personality-functions",
  38 ]
  39 clang_hwasan_oldrt_cflags = clang_hwasan_common_cflags + [
  40     "-mllvm",
  41     "-hwasan-use-short-granules=0",
  42     "-mllvm",
  43     "-hwasan-instrument-landing-pads=1",
  44     "-mllvm",
  45     "-hwasan-instrument-personality-functions=0",
  46 ]
  47
  48 clang_hwasan_cxxflags = config.cxx_mode_flags + clang_hwasan_cflags
  49 clang_hwasan_oldrt_cxxflags = config.cxx_mode_flags + clang_hwasan_oldrt_cflags
  50
  51
  52 def build_invocation(compile_flags):
  53     return " " + " ".join([config.clang] + compile_flags) + " "
  54
  55
  56 config.substitutions.append(("%clangxx ", build_invocation(clang_cxxflags)))
  57 config.substitutions.append(("%clang_hwasan ", build_invocation(clang_hwasan_cflags)))
  58 config.substitutions.append(
  59     ("%clang_hwasan_oldrt ", build_invocation(clang_hwasan_oldrt_cflags))
  60 )
  61 config.substitutions.append(
  62     ("%clangxx_hwasan ", build_invocation(clang_hwasan_cxxflags))
  63 )
  64 config.substitutions.append(
  65     ("%clangxx_hwasan_oldrt ", build_invocation(clang_hwasan_oldrt_cxxflags))
  66 )
  67 config.substitutions.append(("%compiler_rt_libdir", config.compiler_rt_libdir))
  68
  69 default_hwasan_opts_str = ":".join(
  70     ["disable_allocator_tagging=1", "random_tags=0", "fail_without_syscall_abi=0"]
  71     + config.default_sanitizer_opts
  72 )
  73 if default_hwasan_opts_str:
  74     config.environment["HWASAN_OPTIONS"] = default_hwasan_opts_str
  75     default_hwasan_opts_str += ":"
  76 config.substitutions.append(
  77     ("%env_hwasan_opts=", "env HWASAN_OPTIONS=" + default_hwasan_opts_str)
  78 )
  79
  80 # Ensure that we can use hwasan_symbolize from the expected location
  81 llvm_config.add_tool_substitutions(
  82     [ToolSubst("hwasan_symbolize", unresolved="fatal")],
  83     search_dirs=[config.compiler_rt_bindir],
  84 )
  85
  86 # Default test suffixes.
  87 config.suffixes = [".c", ".cpp"]
  88
  89 if config.host_os not in ["Linux", "Android"] or not config.has_lld:
  90     config.unsupported = True