1 files changed, 101 insertions, 0 deletions
diff --git a/lib/tsan/rtl/tsan_platform.h b/lib/tsan/rtl/tsan_platform.h
new file mode 100644
index 000000000000..b557fa1caec5
--- /dev/null
+++ b/lib/tsan/rtl/tsan_platform.h
@@ -0,0 +1,101 @@
+//===-- tsan_platform.h -----------------------------------------*- 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 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 = 0x2a0000000000ULL;
+static const uptr kLinuxAppMemEnd = 0x7fffffffffffULL;
+#else
+static const uptr kLinuxAppMemBeg = 0x7ef000000000ULL;
+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;
+#elif defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
+  // COMPAT mapping is not quite one-to-one.
+  return (shadow / kShadowCnt) | 0x280000000000ULL;
+#else
+  return (shadow / kShadowCnt) | kLinuxAppMemMsk;
+#endif
+}
+
+// For COMPAT mapping returns an alternative address
+// that mapped to the same shadow address.
+static inline uptr AlternativeAddress(uptr addr) {
+#if defined(TSAN_COMPAT_SHADOW) && TSAN_COMPAT_SHADOW
+  return addr | kLinuxAppMemMsk;
+#else
+  return 0;
+#endif
+}
+
+uptr GetShadowMemoryConsumption();
+void FlushShadowMemory();
+
+const char *InitializePlatform();
+void FinalizePlatform();
+
+void internal_start_thread(void(*func)(void*), void *arg);
+
+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