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authorDimitry Andric <dim@FreeBSD.org>2015-02-10 07:45:43 +0000
committerDimitry Andric <dim@FreeBSD.org>2015-02-10 07:45:43 +0000
commit476c4db3dc56bee43df384704c75ccc71cfa7a1d (patch)
tree5d0dcec3cc12fc53532fc84029892b98711a2596 /lib/asan/asan_flags.cc
parentca9211ecdede9bdedb812b2243a4abdb8dacd1b9 (diff)
downloadsrc-476c4db3dc56bee43df384704c75ccc71cfa7a1d.tar.gz
src-476c4db3dc56bee43df384704c75ccc71cfa7a1d.zip
Import compiler-rt trunk r228651.vendor/compiler-rt/compiler-rt-r228651
Notes
Notes: svn path=/vendor/compiler-rt/dist/; revision=278497 svn path=/vendor/compiler-rt/compiler-rt-r228651/; revision=278498; tag=vendor/compiler-rt/compiler-rt-r228651
Diffstat (limited to 'lib/asan/asan_flags.cc')
-rw-r--r--lib/asan/asan_flags.cc141
1 files changed, 141 insertions, 0 deletions
diff --git a/lib/asan/asan_flags.cc b/lib/asan/asan_flags.cc
new file mode 100644
index 000000000000..1d82ab0e725f
--- /dev/null
+++ b/lib/asan/asan_flags.cc
@@ -0,0 +1,141 @@
+//===-- asan_flags.cc -------------------------------------------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of AddressSanitizer, an address sanity checker.
+//
+// ASan flag parsing logic.
+//===----------------------------------------------------------------------===//
+
+#include "asan_activation.h"
+#include "asan_flags.h"
+#include "asan_interface_internal.h"
+#include "asan_stack.h"
+#include "lsan/lsan_common.h"
+#include "sanitizer_common/sanitizer_common.h"
+#include "sanitizer_common/sanitizer_flags.h"
+#include "sanitizer_common/sanitizer_flag_parser.h"
+
+namespace __asan {
+
+Flags asan_flags_dont_use_directly; // use via flags().
+
+static const char *MaybeCallAsanDefaultOptions() {
+ return (&__asan_default_options) ? __asan_default_options() : "";
+}
+
+static const char *MaybeUseAsanDefaultOptionsCompileDefinition() {
+#ifdef ASAN_DEFAULT_OPTIONS
+// Stringize the macro value.
+# define ASAN_STRINGIZE(x) #x
+# define ASAN_STRINGIZE_OPTIONS(options) ASAN_STRINGIZE(options)
+ return ASAN_STRINGIZE_OPTIONS(ASAN_DEFAULT_OPTIONS);
+#else
+ return "";
+#endif
+}
+
+void Flags::SetDefaults() {
+#define ASAN_FLAG(Type, Name, DefaultValue, Description) Name = DefaultValue;
+#include "asan_flags.inc"
+#undef ASAN_FLAG
+}
+
+void RegisterAsanFlags(FlagParser *parser, Flags *f) {
+#define ASAN_FLAG(Type, Name, DefaultValue, Description) \
+ RegisterFlag(parser, #Name, Description, &f->Name);
+#include "asan_flags.inc"
+#undef ASAN_FLAG
+}
+
+void InitializeFlags(Flags *f) {
+ FlagParser parser;
+ RegisterAsanFlags(&parser, f);
+ RegisterCommonFlags(&parser);
+
+ SetCommonFlagsDefaults();
+ {
+ CommonFlags cf;
+ cf.CopyFrom(*common_flags());
+ cf.detect_leaks = CAN_SANITIZE_LEAKS;
+ cf.external_symbolizer_path = GetEnv("ASAN_SYMBOLIZER_PATH");
+ cf.malloc_context_size = kDefaultMallocContextSize;
+ cf.intercept_tls_get_addr = true;
+ OverrideCommonFlags(cf);
+ }
+
+ const int kDefaultQuarantineSizeMb = (ASAN_LOW_MEMORY) ? 1UL << 6 : 1UL << 8;
+ f->SetDefaults();
+
+ // Override from compile definition.
+ const char *compile_def = MaybeUseAsanDefaultOptionsCompileDefinition();
+ parser.ParseString(compile_def);
+
+ // Override from user-specified string.
+ const char *default_options = MaybeCallAsanDefaultOptions();
+ parser.ParseString(default_options);
+
+ // Override from command line.
+ const char *env = GetEnv("ASAN_OPTIONS");
+ if (env) parser.ParseString(env);
+
+ // Let activation flags override current settings. On Android they come
+ // from a system property. On other platforms this is no-op.
+ if (!flags()->start_deactivated) {
+ char buf[100];
+ GetExtraActivationFlags(buf, sizeof(buf));
+ parser.ParseString(buf);
+ }
+
+ SetVerbosity(common_flags()->verbosity);
+
+ // TODO(eugenis): dump all flags at verbosity>=2?
+ if (Verbosity()) ReportUnrecognizedFlags();
+
+ if (common_flags()->help) parser.PrintFlagDescriptions();
+
+ // Flag validation:
+ if (!CAN_SANITIZE_LEAKS && common_flags()->detect_leaks) {
+ Report("%s: detect_leaks is not supported on this platform.\n",
+ SanitizerToolName);
+ Die();
+ }
+ // Make "strict_init_order" imply "check_initialization_order".
+ // TODO(samsonov): Use a single runtime flag for an init-order checker.
+ if (f->strict_init_order) {
+ f->check_initialization_order = true;
+ }
+ CHECK_LE((uptr)common_flags()->malloc_context_size, kStackTraceMax);
+ CHECK_LE(f->min_uar_stack_size_log, f->max_uar_stack_size_log);
+ CHECK_GE(f->redzone, 16);
+ CHECK_GE(f->max_redzone, f->redzone);
+ CHECK_LE(f->max_redzone, 2048);
+ CHECK(IsPowerOfTwo(f->redzone));
+ CHECK(IsPowerOfTwo(f->max_redzone));
+
+ // quarantine_size is deprecated but we still honor it.
+ // quarantine_size can not be used together with quarantine_size_mb.
+ if (f->quarantine_size >= 0 && f->quarantine_size_mb >= 0) {
+ Report("%s: please use either 'quarantine_size' (deprecated) or "
+ "quarantine_size_mb, but not both\n", SanitizerToolName);
+ Die();
+ }
+ if (f->quarantine_size >= 0)
+ f->quarantine_size_mb = f->quarantine_size >> 20;
+ if (f->quarantine_size_mb < 0)
+ f->quarantine_size_mb = kDefaultQuarantineSizeMb;
+}
+
+} // namespace __asan
+
+#if !SANITIZER_SUPPORTS_WEAK_HOOKS
+extern "C" {
+SANITIZER_INTERFACE_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE
+const char* __asan_default_options() { return ""; }
+} // extern "C"
+#endif