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 #include "allocation.h" 32 33 // 34 // Basic implementation of GDB JIT Interface client. 35 // GBD JIT Interface is supported in GDB 7.0 and above. 36 // Currently on x64 and ia32 architectures and Linux OS are supported. 37 // 38 39 #ifdef ENABLE_GDB_JIT_INTERFACE 40 #include "v8.h" 41 #include "factory.h" 42 43 namespace v8 { 44 namespace internal { 45 46 class CompilationInfo; 47 48 #define CODE_TAGS_LIST(V) \ 49 V(LOAD_IC) \ 50 V(KEYED_LOAD_IC) \ 51 V(STORE_IC) \ 52 V(KEYED_STORE_IC) \ 53 V(CALL_IC) \ 54 V(CALL_INITIALIZE) \ 55 V(CALL_PRE_MONOMORPHIC) \ 56 V(CALL_NORMAL) \ 57 V(CALL_MEGAMORPHIC) \ 58 V(CALL_MISS) \ 59 V(STUB) \ 60 V(BUILTIN) \ 61 V(SCRIPT) \ 62 V(EVAL) \ 63 V(FUNCTION) 64 65 class GDBJITLineInfo : public Malloced { 66 public: 67 GDBJITLineInfo() 68 : pc_info_(10) { } 69 70 void SetPosition(intptr_t pc, int pos, bool is_statement) { 71 AddPCInfo(PCInfo(pc, pos, is_statement)); 72 } 73 74 struct PCInfo { 75 PCInfo(intptr_t pc, int pos, bool is_statement) 76 : pc_(pc), pos_(pos), is_statement_(is_statement) { } 77 78 intptr_t pc_; 79 int pos_; 80 bool is_statement_; 81 }; 82 83 List<PCInfo>* pc_info() { 84 return &pc_info_; 85 } 86 87 private: 88 void AddPCInfo(const PCInfo& pc_info) { 89 pc_info_.Add(pc_info); 90 } 91 92 List<PCInfo> pc_info_; 93 }; 94 95 96 class GDBJITInterface: public AllStatic { 97 public: 98 enum CodeTag { 99 #define V(x) x, 100 CODE_TAGS_LIST(V) 101 #undef V 102 TAG_COUNT 103 }; 104 105 static const char* Tag2String(CodeTag tag) { 106 switch (tag) { 107 #define V(x) case x: return #x; 108 CODE_TAGS_LIST(V) 109 #undef V 110 default: 111 return NULL; 112 } 113 } 114 115 static void AddCode(const char* name, 116 Code* code, 117 CodeTag tag, 118 Script* script, 119 CompilationInfo* info); 120 121 static void AddCode(Handle<String> name, 122 Handle<Script> script, 123 Handle<Code> code, 124 CompilationInfo* info); 125 126 static void AddCode(CodeTag tag, String* name, Code* code); 127 128 static void AddCode(CodeTag tag, const char* name, Code* code); 129 130 static void AddCode(CodeTag tag, Code* code); 131 132 static void RemoveCode(Code* code); 133 134 static void RegisterDetailedLineInfo(Code* code, GDBJITLineInfo* line_info); 135 }; 136 137 #define GDBJIT(action) GDBJITInterface::action 138 139 } } // namespace v8::internal 140 #else 141 #define GDBJIT(action) ((void) 0) 142 #endif 143 144 #endif 145
