1 files changed, 102 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/xray/xray_interface_internal.h b/contrib/llvm-project/compiler-rt/lib/xray/xray_interface_internal.h
new file mode 100644
index 000000000000..80c07c167f64
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/xray/xray_interface_internal.h
@@ -0,0 +1,102 @@
+//===-- xray_interface_internal.h -------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of XRay, a dynamic runtime instrumentation system.
+//
+// Implementation of the API functions. See also include/xray/xray_interface.h.
+//
+//===----------------------------------------------------------------------===//
+#ifndef XRAY_INTERFACE_INTERNAL_H
+#define XRAY_INTERFACE_INTERNAL_H
+
+#include "sanitizer_common/sanitizer_platform.h"
+#include "xray/xray_interface.h"
+#include <cstddef>
+#include <cstdint>
+
+extern "C" {
+
+struct XRaySledEntry {
+#if SANITIZER_WORDSIZE == 64
+  uint64_t Address;
+  uint64_t Function;
+  unsigned char Kind;
+  unsigned char AlwaysInstrument;
+  unsigned char Version;
+  unsigned char Padding[13]; // Need 32 bytes
+  uint64_t function() const {
+    // The target address is relative to the location of the Function variable.
+    return reinterpret_cast<uint64_t>(&Function) + Function;
+  }
+  uint64_t address() const {
+    // The target address is relative to the location of the Address variable.
+    return reinterpret_cast<uint64_t>(&Address) + Address;
+  }
+#elif SANITIZER_WORDSIZE == 32
+  uint32_t Address;
+  uint32_t Function;
+  unsigned char Kind;
+  unsigned char AlwaysInstrument;
+  unsigned char Version;
+  unsigned char Padding[5]; // Need 16 bytes
+  uint32_t function() const {
+    // The target address is relative to the location of the Function variable.
+    return reinterpret_cast<uint32_t>(&Function) + Function;
+  }
+  uint32_t address() const {
+    // The target address is relative to the location of the Address variable.
+    return reinterpret_cast<uint32_t>(&Address) + Address;
+  }
+#else
+#error "Unsupported word size."
+#endif
+};
+
+struct XRayFunctionSledIndex {
+  const XRaySledEntry *Begin;
+  size_t Size;
+  // For an entry in the xray_fn_idx section, the address is relative to the
+  // location of the Begin variable.
+  const XRaySledEntry *fromPCRelative() const {
+    return reinterpret_cast<const XRaySledEntry *>(uintptr_t(&Begin) +
+                                                   uintptr_t(Begin));
+  }
+};
+}
+
+namespace __xray {
+
+struct XRaySledMap {
+  const XRaySledEntry *Sleds;
+  size_t Entries;
+  const XRayFunctionSledIndex *SledsIndex;
+  size_t Functions;
+};
+
+bool patchFunctionEntry(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled,
+                        void (*Trampoline)());
+bool patchFunctionExit(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled);
+bool patchFunctionTailExit(bool Enable, uint32_t FuncId,
+                           const XRaySledEntry &Sled);
+bool patchCustomEvent(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled);
+bool patchTypedEvent(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled);
+
+} // namespace __xray
+
+extern "C" {
+// The following functions have to be defined in assembler, on a per-platform
+// basis. See xray_trampoline_*.S files for implementations.
+extern void __xray_FunctionEntry();
+extern void __xray_FunctionExit();
+extern void __xray_FunctionTailExit();
+extern void __xray_ArgLoggerEntry();
+extern void __xray_CustomEvent();
+extern void __xray_TypedEvent();
+}
+
+#endif