1/* 2 * Copyright (C) 2012, 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "CodeOrigin.h" 28 29#include "CallFrame.h" 30#include "CodeBlock.h" 31#include "Executable.h" 32#include "Operations.h" 33 34namespace JSC { 35 36unsigned CodeOrigin::inlineDepthForCallFrame(InlineCallFrame* inlineCallFrame) 37{ 38 unsigned result = 1; 39 for (InlineCallFrame* current = inlineCallFrame; current; current = current->caller.inlineCallFrame) 40 result++; 41 return result; 42} 43 44unsigned CodeOrigin::inlineDepth() const 45{ 46 return inlineDepthForCallFrame(inlineCallFrame); 47} 48 49Vector<CodeOrigin> CodeOrigin::inlineStack() const 50{ 51 Vector<CodeOrigin> result(inlineDepth()); 52 result.last() = *this; 53 unsigned index = result.size() - 2; 54 for (InlineCallFrame* current = inlineCallFrame; current; current = current->caller.inlineCallFrame) 55 result[index--] = current->caller; 56 RELEASE_ASSERT(!result[0].inlineCallFrame); 57 return result; 58} 59 60void CodeOrigin::dump(PrintStream& out) const 61{ 62 Vector<CodeOrigin> stack = inlineStack(); 63 for (unsigned i = 0; i < stack.size(); ++i) { 64 if (i) 65 out.print(" --> "); 66 67 if (InlineCallFrame* frame = stack[i].inlineCallFrame) { 68 out.print(frame->briefFunctionInformation(), ":<", RawPointer(frame->executable.get()), "> "); 69 if (frame->isClosureCall()) 70 out.print("(closure) "); 71 } 72 73 out.print("bc#", stack[i].bytecodeIndex); 74 } 75} 76 77JSFunction* InlineCallFrame::calleeForCallFrame(ExecState* exec) const 78{ 79 if (!isClosureCall()) 80 return callee.get(); 81 82 return jsCast<JSFunction*>((exec + stackOffset)->callee()); 83} 84 85CodeBlockHash InlineCallFrame::hash() const 86{ 87 return executable->hashFor(specializationKind()); 88} 89 90String InlineCallFrame::inferredName() const 91{ 92 return jsCast<FunctionExecutable*>(executable.get())->inferredName().string(); 93} 94 95CodeBlock* InlineCallFrame::baselineCodeBlock() const 96{ 97 return jsCast<FunctionExecutable*>(executable.get())->baselineCodeBlockFor(specializationKind()); 98} 99 100void InlineCallFrame::dumpBriefFunctionInformation(PrintStream& out) const 101{ 102 out.print(inferredName(), "#", hash()); 103} 104 105void InlineCallFrame::dump(PrintStream& out) const 106{ 107 out.print(briefFunctionInformation(), ":<", RawPointer(executable.get()), ", bc#", caller.bytecodeIndex, ", ", specializationKind()); 108 if (callee) 109 out.print(", known callee: ", JSValue(callee.get())); 110 else 111 out.print(", closure call"); 112 out.print(", numArgs+this = ", arguments.size()); 113 out.print(", stack >= r", stackOffset); 114 out.print(">"); 115} 116 117} // namespace JSC 118 119