1 // Copyright 2010 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_GDB_JIT_H_ 6 #define V8_GDB_JIT_H_ 7 8 #include "include/v8.h" 9 10 // 11 // GDB has two ways of interacting with JIT code. With the "JIT compilation 12 // interface", V8 can tell GDB when it emits JIT code. Unfortunately to do so, 13 // it has to create platform-native object files, possibly with platform-native 14 // debugging information. Currently only ELF and Mach-O are supported, which 15 // limits this interface to Linux and Mac OS. This JIT compilation interface 16 // was introduced in GDB 7.0. V8 support can be enabled with the --gdbjit flag. 17 // 18 // The other way that GDB can know about V8 code is via the "custom JIT reader" 19 // interface, in which a GDB extension parses V8's private data to determine the 20 // function, file, and line of a JIT frame, and how to unwind those frames. 21 // This interface was introduced in GDB 7.6. This interface still relies on V8 22 // to register its code via the JIT compilation interface, but doesn't require 23 // that V8 create ELF images. Support will be added for this interface in the 24 // future. 25 // 26 27 namespace v8 { 28 namespace internal { 29 namespace GDBJITInterface { 30 #ifdef ENABLE_GDB_JIT_INTERFACE 31 // JitCodeEventHandler that creates ELF/Mach-O objects and registers them with 32 // GDB. 33 void EventHandler(const v8::JitCodeEvent* event); 34 #endif 35 } // namespace GDBJITInterface 36 } // namespace internal 37 } // namespace v8 38 39 #endif 40