1 //===-- xray_interface_internal.h -------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file is a part of XRay, a dynamic runtime instrumentation system. 11 // 12 // Implementation of the API functions. See also include/xray/xray_interface.h. 13 // 14 //===----------------------------------------------------------------------===// 15 #ifndef XRAY_INTERFACE_INTERNAL_H 16 #define XRAY_INTERFACE_INTERNAL_H 17 18 #include "sanitizer_common/sanitizer_platform.h" 19 #include "xray/xray_interface.h" 20 #include <cstddef> 21 #include <cstdint> 22 23 extern "C" { 24 25 struct XRaySledEntry { 26 #if SANITIZER_WORDSIZE == 64 27 uint64_t Address; 28 uint64_t Function; 29 unsigned char Kind; 30 unsigned char AlwaysInstrument; 31 unsigned char Version; 32 unsigned char Padding[13]; // Need 32 bytes 33 #elif SANITIZER_WORDSIZE == 32 34 uint32_t Address; 35 uint32_t Function; 36 unsigned char Kind; 37 unsigned char AlwaysInstrument; 38 unsigned char Version; 39 unsigned char Padding[5]; // Need 16 bytes 40 #else 41 #error "Unsupported word size." 42 #endif 43 }; 44 45 struct XRayFunctionSledIndex { 46 const XRaySledEntry *Begin; 47 const XRaySledEntry *End; 48 }; 49 } 50 51 namespace __xray { 52 53 struct XRaySledMap { 54 const XRaySledEntry *Sleds; 55 size_t Entries; 56 const XRayFunctionSledIndex *SledsIndex; 57 size_t Functions; 58 }; 59 60 bool patchFunctionEntry(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled, 61 void (*Trampoline)()); 62 bool patchFunctionExit(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled); 63 bool patchFunctionTailExit(bool Enable, uint32_t FuncId, 64 const XRaySledEntry &Sled); 65 bool patchCustomEvent(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled); 66 bool patchTypedEvent(bool Enable, uint32_t FuncId, const XRaySledEntry &Sled); 67 68 } // namespace __xray 69 70 extern "C" { 71 // The following functions have to be defined in assembler, on a per-platform 72 // basis. See xray_trampoline_*.S files for implementations. 73 extern void __xray_FunctionEntry(); 74 extern void __xray_FunctionExit(); 75 extern void __xray_FunctionTailExit(); 76 extern void __xray_ArgLoggerEntry(); 77 extern void __xray_CustomEvent(); 78 extern void __xray_TypedEvent(); 79 } 80 81 #endif 82