1 files changed, 0 insertions, 337 deletions
diff --git a/Source/JavaScriptCore/ftl/FTLDWARFDebugLineInfo.cpp b/Source/JavaScriptCore/ftl/FTLDWARFDebugLineInfo.cpp
deleted file mode 100644
index 0a7a50898..000000000
--- a/Source/JavaScriptCore/ftl/FTLDWARFDebugLineInfo.cpp
+++ /dev/null
@@ -1,337 +0,0 @@
-/*
- * Copyright (C) 2014 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. AND ITS CONTRIBUTORS ``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 ITS 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 "FTLDWARFDebugLineInfo.h"
-
-#if ENABLE(FTL_JIT)
-
-#include <wtf/DataLog.h>
-
-namespace JSC { namespace FTL {
-
-DebugLineInterpreter::DebugLineInterpreter(const char* program)
-    : m_program(program)
-    , m_logResults(false)
-{
-    resetInterpreterState();
-}
-
-template <typename T> inline T read(const char*& program)
-{
-    T result = *reinterpret_cast<const T*>(program);
-    program += sizeof(T);
-    return result;
-}
-
-uint32_t DebugLineInterpreter::parseULEB128(const char*& offset)
-{
-    uint32_t result = 0;
-    uint8_t byte;
-    unsigned shiftAmount = 0;
-    do {
-        byte = read<uint8_t>(offset);
-        result |= (byte & ~0x80) << shiftAmount;
-        shiftAmount += 7;
-    } while (byte & 0x80);
-    return result;
-}
-
-int32_t DebugLineInterpreter::parseSLEB128(const char*& offset)
-{
-    int32_t result = 0;
-    uint8_t byte;
-    unsigned shiftAmount = 0;
-    do {
-        byte = read<uint8_t>(offset);
-        result |= (byte & ~0x80) << shiftAmount;
-        shiftAmount += 7;
-    } while (byte & 0x80);
-    
-    // If the sign bit (in this case, the second MSB) on the last byte is set we need to zero extend.
-    if (byte & 0x40)
-        result |= -(1 << shiftAmount);
-    return result;
-}
-
-void DebugLineInterpreter::run()
-{
-    parsePrologue();
-    interpretStatementProgram();
-    if (m_logResults)
-        printLineInfo();
-}
-
-void DebugLineInterpreter::parsePrologue()
-{
-    const char* currentProgramOffset = m_program;
-    m_prologue.totalLength = read<uint32_t>(currentProgramOffset);
-    if (m_prologue.totalLength == 0xffffffff) {
-        // This is 64-bit DWARF format.
-        m_prologue.format = SixtyFourBit;
-        m_prologue.totalLength = read<uint64_t>(currentProgramOffset);
-    } else
-        m_prologue.format = ThirtyTwoBit;
-    m_prologue.version = read<uint16_t>(currentProgramOffset);
-    
-    if (m_prologue.format == ThirtyTwoBit)
-        m_prologue.prologueLength = read<uint32_t>(currentProgramOffset);
-    else
-        m_prologue.prologueLength = read<uint64_t>(currentProgramOffset);
-    const char* afterLengthOffset = currentProgramOffset;
-    
-    m_prologue.minimumInstructionLength = read<uint8_t>(currentProgramOffset);
-    m_prologue.defaultIsStatement = read<uint8_t>(currentProgramOffset);
-    m_prologue.lineBase = read<int8_t>(currentProgramOffset);
-    m_prologue.lineRange = read<uint8_t>(currentProgramOffset);
-    m_prologue.opcodeBase = read<uint8_t>(currentProgramOffset);
-    for (unsigned i = 1; i < m_prologue.opcodeBase; ++i)
-        m_prologue.standardOpcodeLengths.append(read<uint8_t>(currentProgramOffset));
-    parseIncludeDirectories(currentProgramOffset);
-    parseFileEntries(currentProgramOffset);
-    
-    m_program = afterLengthOffset + m_prologue.prologueLength;
-
-    if (!m_logResults)
-        return;
-
-    dataLog("\nPrologue:\n");
-    dataLog("totalLength = ", m_prologue.totalLength, "\n");
-    dataLog("version = ", m_prologue.version, "\n");
-    dataLog("prologueLength = ", m_prologue.prologueLength, "\n");
-    dataLog("minimumInstructionLength = ", m_prologue.minimumInstructionLength, "\n");
-    dataLog("defaultIsStatement = ", m_prologue.defaultIsStatement, "\n");
-    dataLog("lineBase = ", m_prologue.lineBase, "\n");
-    dataLog("lineRange = ", m_prologue.lineRange, "\n");
-    dataLog("opcodeBase = ", m_prologue.opcodeBase, "\n");
-    
-    dataLog("\nStandard Opcode Lengths:\n");
-    for (unsigned i = 1; i < m_prologue.opcodeBase; ++i)
-        dataLog("standardOpcodeLengths[", i - 1, "] = ", m_prologue.standardOpcodeLengths[i - 1], "\n");
-    
-    dataLog("\nInclude Directories:\n");
-    for (unsigned i = 0; i < m_prologue.includeDirectories.size(); ++i)
-        dataLog("includeDirectories[", i, "] = ", m_prologue.includeDirectories[i], "\n");
-    
-    dataLog("\nFiles:\n");
-    for (unsigned i = 0; i < m_prologue.fileEntries.size(); ++i) {
-        FileEntry& entry = m_prologue.fileEntries[i];
-        dataLog("fileEntries[", i, "] = {name: \"", entry.name, "\", dir_index: ", entry.directoryIndex, ", last_modified: ", entry.lastModified, ", size: ", entry.size, "}\n");
-    }
-}
-
-void DebugLineInterpreter::parseIncludeDirectories(const char*& offset)
-{
-    size_t length = 0;
-    while ((length = strlen(offset))) {
-        m_prologue.includeDirectories.append(offset);
-        offset += length + 1;
-    }
-    
-    // Extra increment to get past the last null byte.
-    offset += 1;
-}
-
-void DebugLineInterpreter::parseFileEntries(const char*& offset)
-{
-    while (true) {
-        DebugLineInterpreter::FileEntry nextEntry;
-        if (!parseFileEntry(offset, nextEntry))
-            break;
-        m_prologue.fileEntries.append(nextEntry);
-    }
-}
-
-bool DebugLineInterpreter::parseFileEntry(const char*& offset, FileEntry& entry)
-{
-    size_t length = strlen(offset);
-    if (!length) {
-        offset += 1;
-        return false;
-    }
-    entry.name = offset;
-    offset += length + 1;
-    entry.directoryIndex = parseULEB128(offset);
-    entry.lastModified = parseULEB128(offset);
-    entry.size = parseULEB128(offset);
-    
-    return true;
-}
-
-void DebugLineInterpreter::interpretStatementProgram()
-{
-    const char* currentProgramOffset = m_program;
-    bool keepGoing = true;
-    do {
-        keepGoing = interpretOpcode(currentProgramOffset);
-    } while (keepGoing);
-}
-
-bool DebugLineInterpreter::interpretOpcode(const char*& offset)
-{
-    uint8_t nextOpcode = read<uint8_t>(offset);
-    switch (nextOpcode) {
-    case ExtendedOpcodes: {
-        uint32_t length = parseULEB128(offset);
-        if (!length)
-            return false;
-        uint8_t extendedOpcode = read<uint8_t>(offset);
-        switch (extendedOpcode) {
-        case DW_LNE_end_sequence: {
-            m_currentState.endSequence = true;
-            m_lineInfoMatrix.append(m_currentState);
-            resetInterpreterState();
-            break;
-        }
-        case DW_LNE_set_address: {
-            m_currentState.address = read<size_t>(offset);
-            break;
-        }
-        case DW_LNE_define_file: {
-            fprintf(stderr, "Unimplemented extended opcode DW_LNE_define_file.\n");
-            RELEASE_ASSERT_NOT_REACHED();
-            break;
-        }
-        default: {
-            fprintf(stderr, "Unknown extended opcode.\n");
-            RELEASE_ASSERT_NOT_REACHED();
-            break;
-        }
-        }
-        break;
-    }
-        /* Standard opcodes */
-    case DW_LNS_copy: {
-        m_lineInfoMatrix.append(m_currentState);
-        m_currentState.isBasicBlock = false;
-        m_currentState.prologueEnd = false;
-        m_currentState.epilogueBegin = false;
-        break;
-    }
-    case DW_LNS_advance_pc: {
-        uint32_t advance = parseULEB128(offset);
-        m_currentState.address += advance * m_prologue.minimumInstructionLength;
-        break;
-    }
-    case DW_LNS_advance_line: {
-        int32_t advance = parseSLEB128(offset);
-        m_currentState.line += advance;
-        break;
-    }
-    case DW_LNS_set_file: {
-        uint32_t fileIndex = parseULEB128(offset);
-        m_currentState.file = fileIndex;
-        break;
-    }
-    case DW_LNS_set_column: {
-        m_currentState.column = parseULEB128(offset);
-        break;
-    }
-    case DW_LNS_negate_stmt: {
-        m_currentState.isStatement = !m_currentState.isStatement;
-        break;
-    }
-    case DW_LNS_set_basic_block: {
-        m_currentState.isBasicBlock = true;
-        break;
-    }
-    case DW_LNS_const_add_pc: {
-        uint8_t adjustedOpcode = nextOpcode - m_prologue.opcodeBase;
-        uint32_t addressIncrement = (adjustedOpcode / m_prologue.lineRange) * m_prologue.minimumInstructionLength;
-        m_currentState.address += addressIncrement;
-        break;
-    }
-    case DW_LNS_fixed_advance_pc: {
-        uint16_t advance = read<uint16_t>(offset);
-        m_currentState.address += advance;
-        break;
-    }
-    case DW_LNS_set_prologue_end: {
-        m_currentState.prologueEnd = true;
-        break;
-    }
-    case DW_LNS_set_epilogue_begin: {
-        m_currentState.epilogueBegin = true;
-        break;
-    }
-    case DW_LNS_set_isa: {
-        m_currentState.isa = parseULEB128(offset);
-        break;
-    }
-        /* Special opcodes */
-    default: {
-        uint8_t adjustedOpcode = nextOpcode - m_prologue.opcodeBase;
-        uint32_t addressIncrement = (adjustedOpcode / m_prologue.lineRange) * m_prologue.minimumInstructionLength;
-        int32_t lineIncrement = m_prologue.lineBase + (adjustedOpcode % m_prologue.lineRange);
-        m_currentState.address += addressIncrement;
-        m_currentState.line += lineIncrement;
-        m_lineInfoMatrix.append(m_currentState);
-        m_currentState.isBasicBlock = false;
-        m_currentState.prologueEnd = false;
-        m_currentState.epilogueBegin = false;
-        break;
-    }
-    }
-    return true;
-}
-
-void DebugLineInterpreter::printLineInfo()
-{
-    dataLog("\nLine Info Matrix:\n");
-    for (unsigned i = 0; i < m_lineInfoMatrix.size(); ++i)
-        printLineInfo(m_lineInfoMatrix[i]);
-    dataLog("\n");
-}
-
-void DebugLineInterpreter::printLineInfo(LineInfo& info)
-{
-    dataLogF("address: %p", reinterpret_cast<void*>(info.address));
-    dataLog("  file: ", info.file, "  line: ", info.line, "  column: ", info.column, "  isa: ", info.isa, "  ");
-    dataLog("  statement?: ", info.isStatement);
-    dataLog("  basic block?: ", info.isBasicBlock);
-    dataLog("  end sequence?: ", info.endSequence);
-    dataLog("  prologue end?: ", info.prologueEnd);
-    dataLog("  epilogue begin?: ", info.epilogueBegin);
-    dataLog("\n");
-}
-
-void DebugLineInterpreter::resetInterpreterState()
-{
-    m_currentState.address = 0;
-    m_currentState.file = 1;
-    m_currentState.line = 1;
-    m_currentState.column = 0;
-    m_currentState.isa = 0;
-    m_currentState.isStatement = false;
-    m_currentState.isBasicBlock = false;
-    m_currentState.endSequence = false;
-    m_currentState.prologueEnd = false;
-    m_currentState.epilogueBegin = false;
-}
-
-} } // namespace JSC::FTL
-
-#endif // ENABLE(FTL_JIT)
-