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//===-- nsan_flags.cc -----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of NumericalStabilitySanitizer.
//
//===----------------------------------------------------------------------===//
#include "nsan_flags.h"
#include "sanitizer_common/sanitizer_flag_parser.h"
#include "sanitizer_common/sanitizer_flags.h"
using namespace __sanitizer;
using namespace __nsan;
SANITIZER_INTERFACE_WEAK_DEF(const char *, __nsan_default_options, void) {
return "";
}
Flags __nsan::flags_data;
void Flags::SetDefaults() {
#define NSAN_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
#include "nsan_flags.inc"
#undef NSAN_FLAG
}
void Flags::PopulateCache() {
cached_absolute_error_threshold =
1.0 / (1ull << log2_absolute_error_threshold);
}
static void RegisterNSanFlags(FlagParser *parser, Flags *f) {
#define NSAN_FLAG(Type, Name, DefaultValue, Description) \
RegisterFlag(parser, #Name, Description, &f->Name);
#include "nsan_flags.inc"
#undef NSAN_FLAG
}
static const char *MaybeCallNsanDefaultOptions() {
return (&__nsan_default_options) ? __nsan_default_options() : "";
}
void __nsan::InitializeFlags() {
SetCommonFlagsDefaults();
{
CommonFlags cf;
cf.CopyFrom(*common_flags());
cf.external_symbolizer_path = GetEnv("NSAN_SYMBOLIZER_PATH");
OverrideCommonFlags(cf);
}
flags().SetDefaults();
FlagParser parser;
RegisterCommonFlags(&parser);
RegisterNSanFlags(&parser, &flags());
const char *nsan_default_options = MaybeCallNsanDefaultOptions();
parser.ParseString(nsan_default_options);
parser.ParseString(GetEnv("NSAN_OPTIONS"));
InitializeCommonFlags();
if (Verbosity())
ReportUnrecognizedFlags();
if (common_flags()->help)
parser.PrintFlagDescriptions();
flags().PopulateCache();
}
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