1 //===-- xray_interface_internal.h -------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file is a part of XRay, a dynamic runtime instrumentation system.
12 // Implementation of the API functions. See also include/xray/xray_interface.h.
14 //===----------------------------------------------------------------------===//
15 #ifndef XRAY_INTERFACE_INTERNAL_H
16 #define XRAY_INTERFACE_INTERNAL_H
18 #include "sanitizer_common/sanitizer_platform.h"
19 #include "xray/xray_interface.h"
25 struct XRaySledEntry {
26 #if SANITIZER_WORDSIZE == 64
30 unsigned char AlwaysInstrument;
31 unsigned char Padding[14]; // Need 32 bytes
32 #elif SANITIZER_WORDSIZE == 32
36 unsigned char AlwaysInstrument;
37 unsigned char Padding[6]; // Need 16 bytes
39 #error "Unsupported word size."
47 const XRaySledEntry *Sleds;
51 uint64_t cycleFrequency();
53 bool patchFunctionEntry(bool Enable, uint32_t FuncId,
54 const XRaySledEntry &Sled);
55 bool patchFunctionExit(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled);
56 bool patchFunctionTailExit(bool Enable, uint32_t FuncId,
57 const XRaySledEntry &Sled);
62 // The following functions have to be defined in assembler, on a per-platform
63 // basis. See xray_trampoline_*.S files for implementations.
64 extern void __xray_FunctionEntry();
65 extern void __xray_FunctionExit();
66 extern void __xray_FunctionTailExit();