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# -*- Python -*-
import os
# Setup config name.
config.name = 'HWAddressSanitizer' + getattr(config, 'name_suffix', 'default')
# Setup source root.
config.test_source_root = os.path.dirname(__file__)
# Setup default compiler flags used with -fsanitize=memory option.
clang_cflags = [config.target_cflags] + config.debug_info_flags
clang_cxxflags = config.cxx_mode_flags + clang_cflags
clang_hwasan_common_cflags = clang_cflags + ["-fsanitize=hwaddress", "-fuse-ld=lld"]
if config.target_arch == 'x86_64' and config.enable_aliases == '1':
clang_hwasan_common_cflags += ["-fsanitize-hwaddress-experimental-aliasing"]
if config.enable_aliases != '1':
config.available_features.add('pointer-tagging')
if config.target_arch == 'x86_64':
# This does basically the same thing as tagged-globals on aarch64. Because
# the x86_64 implementation is for testing purposes only there is no
# equivalent target feature implemented on x86_64.
clang_hwasan_common_cflags += ["-mcmodel=large"]
# The callback instrumentation used on x86_64 has a 1/64 chance of choosing a
# stack tag of 0. This causes stack tests to become flaky, so we force tags
# to be generated via calls to __hwasan_generate_tag, which never returns 0.
# TODO: See if we can remove this once we use the outlined instrumentation.
clang_hwasan_common_cflags += ["-mllvm", "-hwasan-generate-tags-with-calls=1"]
clang_hwasan_cflags = clang_hwasan_common_cflags + ["-mllvm", "-hwasan-globals",
"-mllvm", "-hwasan-use-short-granules",
"-mllvm", "-hwasan-instrument-landing-pads=0",
"-mllvm", "-hwasan-instrument-personality-functions"]
clang_hwasan_oldrt_cflags = clang_hwasan_common_cflags + ["-mllvm", "-hwasan-use-short-granules=0",
"-mllvm", "-hwasan-instrument-landing-pads=1",
"-mllvm", "-hwasan-instrument-personality-functions=0"]
clang_hwasan_cxxflags = config.cxx_mode_flags + clang_hwasan_cflags
clang_hwasan_oldrt_cxxflags = config.cxx_mode_flags + clang_hwasan_oldrt_cflags
def build_invocation(compile_flags):
return " " + " ".join([config.clang] + compile_flags) + " "
config.substitutions.append( ("%clangxx ", build_invocation(clang_cxxflags)) )
config.substitutions.append( ("%clang_hwasan ", build_invocation(clang_hwasan_cflags)) )
config.substitutions.append( ("%clang_hwasan_oldrt ", build_invocation(clang_hwasan_oldrt_cflags)) )
config.substitutions.append( ("%clangxx_hwasan ", build_invocation(clang_hwasan_cxxflags)) )
config.substitutions.append( ("%clangxx_hwasan_oldrt ", build_invocation(clang_hwasan_oldrt_cxxflags)) )
config.substitutions.append( ("%compiler_rt_libdir", config.compiler_rt_libdir) )
default_hwasan_opts_str = ':'.join(['disable_allocator_tagging=1', 'random_tags=0', 'fail_without_syscall_abi=0'] + config.default_sanitizer_opts)
if default_hwasan_opts_str:
config.environment['HWASAN_OPTIONS'] = default_hwasan_opts_str
default_hwasan_opts_str += ':'
config.substitutions.append(('%env_hwasan_opts=',
'env HWASAN_OPTIONS=' + default_hwasan_opts_str))
# Default test suffixes.
config.suffixes = ['.c', '.cpp']
if config.host_os not in ['Linux', 'Android'] or not config.has_lld:
config.unsupported = True
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