tsan: New directory.

libsanitizer/
	* tsan: New directory. Import tsan runtime from llvm.
	* configure.ac: Add 64 bits tsan build.
	* Makefile.am: Likewise.
	* configure: Regenerated.
	* Makefile.in: Likewise.

From-SVN: r193737

1 files changed, 100 insertions, 0 deletions

diff --git a/libsanitizer/tsan/tsan_platform.h b/libsanitizer/tsan/tsan_platform.h
new file mode 100644
index 00000000000..d7a4cf7b0e9
--- /dev/null
+++ b/libsanitizer/tsan/tsan_platform.h
@@ -0,0 +1,100 @@
+//===-- tsan_platform.h -----------------------------------------*- C++ -*-===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of ThreadSanitizer (TSan), a race detector.
+//
+// Platform-specific code.
+//===----------------------------------------------------------------------===//
+
+#ifndef TSAN_PLATFORM_H
+#define TSAN_PLATFORM_H
+
+#include "tsan_rtl.h"
+
+#if __LP64__
+namespace __tsan {
+
+#if defined(TSAN_GO)
+static const uptr kLinuxAppMemBeg = 0x000000000000ULL;
+static const uptr kLinuxAppMemEnd = 0x00fcffffffffULL;
+static const uptr kLinuxShadowMsk = 0x100000000000ULL;
+// TSAN_COMPAT_SHADOW is intended for COMPAT virtual memory layout,
+// when memory addresses are of the 0x2axxxxxxxxxx form.
+// The option is enabled with 'setarch x86_64 -L'.
+#elif defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
+static const uptr kLinuxAppMemBeg = 0x290000000000ULL;
+static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
+#else
+static const uptr kLinuxAppMemBeg = 0x7cf000000000ULL;
+static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
+#endif
+
+static const uptr kLinuxAppMemMsk = 0x7c0000000000ULL;
+
+// This has to be a macro to allow constant initialization of constants below.
+#ifndef TSAN_GO
+#define MemToShadow(addr) \
+    (((addr) & ~(kLinuxAppMemMsk | (kShadowCell - 1))) * kShadowCnt)
+#else
+#define MemToShadow(addr) \
+    ((((addr) & ~(kShadowCell - 1)) * kShadowCnt) | kLinuxShadowMsk)
+#endif
+
+static const uptr kLinuxShadowBeg = MemToShadow(kLinuxAppMemBeg);
+static const uptr kLinuxShadowEnd =
+  MemToShadow(kLinuxAppMemEnd) | (kPageSize - 1);
+
+static inline bool IsAppMem(uptr mem) {
+  return mem >= kLinuxAppMemBeg && mem <= kLinuxAppMemEnd;
+}
+
+static inline bool IsShadowMem(uptr mem) {
+  return mem >= kLinuxShadowBeg && mem <= kLinuxShadowEnd;
+}
+
+static inline uptr ShadowToMem(uptr shadow) {
+  CHECK(IsShadowMem(shadow));
+#ifdef TSAN_GO
+  return (shadow & ~kLinuxShadowMsk) / kShadowCnt;
+#else
+  return (shadow / kShadowCnt) | kLinuxAppMemMsk;
+#endif
+}
+
+// For COMPAT mapping returns an alternative address
+// that mapped to the same shadow address.
+// COMPAT mapping is not quite one-to-one.
+static inline uptr AlternativeAddress(uptr addr) {
+#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
+  return (addr & ~kLinuxAppMemMsk) | 0x280000000000ULL;
+#else
+  return 0;
+#endif
+}
+
+uptr GetShadowMemoryConsumption();
+void FlushShadowMemory();
+
+const char *InitializePlatform();
+void FinalizePlatform();
+
+void internal_start_thread(void(*func)(void*), void *arg);
+
+// Says whether the addr relates to a global var.
+// Guesses with high probability, may yield both false positives and negatives.
+bool IsGlobalVar(uptr addr);
+uptr GetTlsSize();
+void GetThreadStackAndTls(bool main, uptr *stk_addr, uptr *stk_size,
+                          uptr *tls_addr, uptr *tls_size);
+
+}  // namespace __tsan
+
+#else  // __LP64__
+# error "Only 64-bit is supported"
+#endif
+
+#endif  // TSAN_PLATFORM_H