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      1 //===-- sancov_flags.cc -----------------------------------------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // Sanitizer Coverage runtime flags.
     11 //
     12 //===----------------------------------------------------------------------===//
     13 
     14 #include "sancov_flags.h"
     15 #include "sanitizer_flag_parser.h"
     16 #include "sanitizer_platform.h"
     17 
     18 SANITIZER_INTERFACE_WEAK_DEF(const char*, __sancov_default_options, void) {
     19   return "";
     20 }
     21 
     22 using namespace __sanitizer;
     23 
     24 namespace __sancov {
     25 
     26 SancovFlags sancov_flags_dont_use_directly;  // use via flags();
     27 
     28 void SancovFlags::SetDefaults() {
     29 #define SANCOV_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
     30 #include "sancov_flags.inc"
     31 #undef SANCOV_FLAG
     32 }
     33 
     34 static void RegisterSancovFlags(FlagParser *parser, SancovFlags *f) {
     35 #define SANCOV_FLAG(Type, Name, DefaultValue, Description) \
     36   RegisterFlag(parser, #Name, Description, &f->Name);
     37 #include "sancov_flags.inc"
     38 #undef SANCOV_FLAG
     39 }
     40 
     41 static const char *MaybeCallSancovDefaultOptions() {
     42   return (&__sancov_default_options) ? __sancov_default_options() : "";
     43 }
     44 
     45 void InitializeSancovFlags() {
     46   SancovFlags *f = sancov_flags();
     47   f->SetDefaults();
     48 
     49   FlagParser parser;
     50   RegisterSancovFlags(&parser, f);
     51 
     52   parser.ParseString(MaybeCallSancovDefaultOptions());
     53   parser.ParseString(GetEnv("SANCOV_OPTIONS"));
     54 
     55   ReportUnrecognizedFlags();
     56   if (f->help) parser.PrintFlagDescriptions();
     57 }
     58 
     59 }  // namespace __sancov
     60