1 //===-- flags.cpp -----------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "flags.h"
10 #include "common.h"
11 #include "flags_parser.h"
12
13 #include "scudo/interface.h"
14
15 namespace scudo {
16
getFlags()17 Flags *getFlags() {
18 static Flags F;
19 return &F;
20 }
21
setDefaults()22 void Flags::setDefaults() {
23 #define SCUDO_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
24 #include "flags.inc"
25 #undef SCUDO_FLAG
26
27 #ifdef GWP_ASAN_HOOKS
28 #define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description) \
29 GWP_ASAN_##Name = DefaultValue;
30 #include "gwp_asan/options.inc"
31 #undef GWP_ASAN_OPTION
32 #endif // GWP_ASAN_HOOKS
33 }
34
registerFlags(FlagParser * Parser,Flags * F)35 void registerFlags(FlagParser *Parser, Flags *F) {
36 #define SCUDO_FLAG(Type, Name, DefaultValue, Description) \
37 Parser->registerFlag(#Name, Description, FlagType::FT_##Type, \
38 reinterpret_cast<void *>(&F->Name));
39 #include "flags.inc"
40 #undef SCUDO_FLAG
41
42 #ifdef GWP_ASAN_HOOKS
43 #define GWP_ASAN_OPTION(Type, Name, DefaultValue, Description) \
44 Parser->registerFlag("GWP_ASAN_" #Name, Description, FlagType::FT_##Type, \
45 reinterpret_cast<void *>(&F->GWP_ASAN_##Name));
46 #include "gwp_asan/options.inc"
47 #undef GWP_ASAN_OPTION
48 #endif // GWP_ASAN_HOOKS
49 }
50
getCompileDefinitionScudoDefaultOptions()51 static const char *getCompileDefinitionScudoDefaultOptions() {
52 #ifdef SCUDO_DEFAULT_OPTIONS
53 return STRINGIFY(SCUDO_DEFAULT_OPTIONS);
54 #else
55 return "";
56 #endif
57 }
58
getScudoDefaultOptions()59 static const char *getScudoDefaultOptions() {
60 return (&__scudo_default_options) ? __scudo_default_options() : "";
61 }
62
initFlags()63 void initFlags() {
64 Flags *F = getFlags();
65 F->setDefaults();
66 FlagParser Parser;
67 registerFlags(&Parser, F);
68 Parser.parseString(getCompileDefinitionScudoDefaultOptions());
69 Parser.parseString(getScudoDefaultOptions());
70 Parser.parseString(getEnv("SCUDO_OPTIONS"));
71 }
72
73 } // namespace scudo
74