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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "JITDisassembler.h"
#if ENABLE(JIT)
#include "CodeBlock.h"
#include "CodeBlockWithJITType.h"
#include "JIT.h"
namespace JSC {
JITDisassembler::JITDisassembler(CodeBlock *codeBlock)
: m_codeBlock(codeBlock)
, m_labelForBytecodeIndexInMainPath(codeBlock->instructionCount())
, m_labelForBytecodeIndexInSlowPath(codeBlock->instructionCount())
{
}
JITDisassembler::~JITDisassembler()
{
}
void JITDisassembler::dump(PrintStream& out, LinkBuffer& linkBuffer)
{
out.print("Baseline JIT code for ", CodeBlockWithJITType(m_codeBlock, JITCode::BaselineJIT), ", instruction count = ", m_codeBlock->instructionCount(), "\n");
out.print(" Code at [", RawPointer(linkBuffer.debugAddress()), ", ", RawPointer(static_cast<char*>(linkBuffer.debugAddress()) + linkBuffer.debugSize()), "):\n");
dumpDisassembly(out, linkBuffer, m_startOfCode, m_labelForBytecodeIndexInMainPath[0]);
MacroAssembler::Label firstSlowLabel;
for (unsigned i = 0; i < m_labelForBytecodeIndexInSlowPath.size(); ++i) {
if (m_labelForBytecodeIndexInSlowPath[i].isSet()) {
firstSlowLabel = m_labelForBytecodeIndexInSlowPath[i];
break;
}
}
dumpForInstructions(out, linkBuffer, " ", m_labelForBytecodeIndexInMainPath, firstSlowLabel.isSet() ? firstSlowLabel : m_endOfSlowPath);
out.print(" (End Of Main Path)\n");
dumpForInstructions(out, linkBuffer, " (S) ", m_labelForBytecodeIndexInSlowPath, m_endOfSlowPath);
out.print(" (End Of Slow Path)\n");
dumpDisassembly(out, linkBuffer, m_endOfSlowPath, m_endOfCode);
}
void JITDisassembler::dump(LinkBuffer& linkBuffer)
{
dump(WTF::dataFile(), linkBuffer);
}
void JITDisassembler::dumpForInstructions(PrintStream& out, LinkBuffer& linkBuffer, const char* prefix, Vector<MacroAssembler::Label>& labels, MacroAssembler::Label endLabel)
{
for (unsigned i = 0 ; i < labels.size();) {
if (!labels[i].isSet()) {
i++;
continue;
}
out.print(prefix);
m_codeBlock->dumpBytecode(i);
for (unsigned nextIndex = i + 1; ; nextIndex++) {
if (nextIndex >= labels.size()) {
dumpDisassembly(out, linkBuffer, labels[i], endLabel);
return;
}
if (labels[nextIndex].isSet()) {
dumpDisassembly(out, linkBuffer, labels[i], labels[nextIndex]);
i = nextIndex;
break;
}
}
}
}
void JITDisassembler::dumpDisassembly(PrintStream& out, LinkBuffer& linkBuffer, MacroAssembler::Label from, MacroAssembler::Label to)
{
CodeLocationLabel fromLocation = linkBuffer.locationOf(from);
CodeLocationLabel toLocation = linkBuffer.locationOf(to);
disassemble(fromLocation, bitwise_cast<uintptr_t>(toLocation.executableAddress()) - bitwise_cast<uintptr_t>(fromLocation.executableAddress()), " ", out);
}
} // namespace JSC
#endif // ENABLE(JIT)
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