1 // Copyright 2010 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #ifndef V8_GDB_JIT_H_ 29 #define V8_GDB_JIT_H_ 30 31 // 32 // Basic implementation of GDB JIT Interface client. 33 // GBD JIT Interface is supported in GDB 7.0 and above. 34 // Currently on x64 and ia32 architectures and Linux OS are supported. 35 // 36 37 #ifdef ENABLE_GDB_JIT_INTERFACE 38 #include "v8.h" 39 #include "factory.h" 40 41 namespace v8 { 42 namespace internal { 43 44 #define CODE_TAGS_LIST(V) \ 45 V(LOAD_IC) \ 46 V(KEYED_LOAD_IC) \ 47 V(STORE_IC) \ 48 V(KEYED_STORE_IC) \ 49 V(CALL_IC) \ 50 V(CALL_INITIALIZE) \ 51 V(CALL_PRE_MONOMORPHIC) \ 52 V(CALL_NORMAL) \ 53 V(CALL_MEGAMORPHIC) \ 54 V(CALL_MISS) \ 55 V(STUB) \ 56 V(BUILTIN) \ 57 V(SCRIPT) \ 58 V(EVAL) \ 59 V(FUNCTION) 60 61 class GDBJITLineInfo : public Malloced { 62 public: 63 GDBJITLineInfo() 64 : pc_info_(10) { } 65 66 void SetPosition(intptr_t pc, int pos, bool is_statement) { 67 AddPCInfo(PCInfo(pc, pos, is_statement)); 68 } 69 70 struct PCInfo { 71 PCInfo(intptr_t pc, int pos, bool is_statement) 72 : pc_(pc), pos_(pos), is_statement_(is_statement) { } 73 74 intptr_t pc_; 75 int pos_; 76 bool is_statement_; 77 }; 78 79 List<PCInfo>* pc_info() { 80 return &pc_info_; 81 } 82 83 private: 84 void AddPCInfo(const PCInfo& pc_info) { 85 pc_info_.Add(pc_info); 86 } 87 88 List<PCInfo> pc_info_; 89 }; 90 91 92 class GDBJITInterface: public AllStatic { 93 public: 94 enum CodeTag { 95 #define V(x) x, 96 CODE_TAGS_LIST(V) 97 #undef V 98 TAG_COUNT 99 }; 100 101 static const char* Tag2String(CodeTag tag) { 102 switch (tag) { 103 #define V(x) case x: return #x; 104 CODE_TAGS_LIST(V) 105 #undef V 106 default: 107 return NULL; 108 } 109 } 110 111 static void AddCode(const char* name, 112 Code* code, 113 CodeTag tag, 114 Script* script = NULL); 115 116 static void AddCode(Handle<String> name, 117 Handle<Script> script, 118 Handle<Code> code); 119 120 static void AddCode(CodeTag tag, String* name, Code* code); 121 122 static void AddCode(CodeTag tag, const char* name, Code* code); 123 124 static void AddCode(CodeTag tag, Code* code); 125 126 static void RemoveCode(Code* code); 127 128 static void RegisterDetailedLineInfo(Code* code, GDBJITLineInfo* line_info); 129 130 private: 131 static Mutex* mutex_; 132 }; 133 134 #define GDBJIT(action) GDBJITInterface::action 135 136 } } // namespace v8::internal 137 #else 138 #define GDBJIT(action) ((void) 0) 139 #endif 140 141 #endif 142
