From d5579e7094c70db66a193ae1daffd4c71e8fc10b Mon Sep 17 00:00:00 2001
From: Simon Hausmann <simon.hausmann@qt.io>
Date: Tue, 10 Jan 2017 10:13:14 +0100
Subject: Make JSC::LinkBuffer a template

Unfortunately the link buffer depends on target platform types.

Change-Id: Idb49e72e8e864c709293a7b315dff948bc58e62a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
---
 src/3rdparty/masm/assembler/LinkBuffer.cpp | 134 -----------------------------
 1 file changed, 134 deletions(-)

(limited to 'src/3rdparty/masm/assembler/LinkBuffer.cpp')

diff --git a/src/3rdparty/masm/assembler/LinkBuffer.cpp b/src/3rdparty/masm/assembler/LinkBuffer.cpp
index 432a7ee227..74c278135b 100644
--- a/src/3rdparty/masm/assembler/LinkBuffer.cpp
+++ b/src/3rdparty/masm/assembler/LinkBuffer.cpp
@@ -32,140 +32,6 @@
 
 namespace JSC {
 
-LinkBuffer::CodeRef LinkBuffer::finalizeCodeWithoutDisassembly()
-{
-    performFinalization();
-    
-    return CodeRef(m_executableMemory);
-}
-
-LinkBuffer::CodeRef LinkBuffer::finalizeCodeWithDisassembly(const char* format, ...)
-{
-    ASSERT(Options::showDisassembly() || Options::showDFGDisassembly());
-    
-    CodeRef result = finalizeCodeWithoutDisassembly();
-    
-    dataLogF("Generated JIT code for ");
-    va_list argList;
-    va_start(argList, format);
-    WTF::dataLogFV(format, argList);
-    va_end(argList);
-    dataLogF(":\n");
-    
-    dataLogF(
-#if OS(WINDOWS)
-                "    Code at [0x%p, 0x%p):\n",
-#else
-                "    Code at [%p, %p):\n",
-#endif
-                result.code().executableAddress(), static_cast<char*>(result.code().executableAddress()) + result.size());
-    disassemble(result.code(), m_size, "    ", WTF::dataFile());
-    
-    return result;
-}
-
-void LinkBuffer::linkCode(void* ownerUID, JITCompilationEffort effort)
-{
-    ASSERT(!m_code);
-#if !ENABLE(BRANCH_COMPACTION)
-    m_executableMemory = m_assembler->m_assembler.executableCopy(*m_globalData, ownerUID, effort);
-    if (!m_executableMemory)
-        return;
-    m_code = m_executableMemory->start();
-    m_size = m_assembler->m_assembler.codeSize();
-    ASSERT(m_code);
-#else
-    m_initialSize = m_assembler->m_assembler.codeSize();
-    m_executableMemory = m_globalData->executableAllocator.allocate(*m_globalData, m_initialSize, ownerUID, effort);
-    if (!m_executableMemory)
-        return;
-    m_code = (uint8_t*)m_executableMemory->start();
-    ASSERT(m_code);
-    ExecutableAllocator::makeWritable(m_code, m_initialSize);
-    uint8_t* inData = (uint8_t*)m_assembler->unlinkedCode();
-    uint8_t* outData = reinterpret_cast<uint8_t*>(m_code);
-    int readPtr = 0;
-    int writePtr = 0;
-    Vector<LinkRecord, 0, UnsafeVectorOverflow>& jumpsToLink = m_assembler->jumpsToLink();
-    unsigned jumpCount = jumpsToLink.size();
-    for (unsigned i = 0; i < jumpCount; ++i) {
-        int offset = readPtr - writePtr;
-        ASSERT(!(offset & 1));
-            
-        // Copy the instructions from the last jump to the current one.
-        size_t regionSize = jumpsToLink[i].from() - readPtr;
-        uint16_t* copySource = reinterpret_cast_ptr<uint16_t*>(inData + readPtr);
-        uint16_t* copyEnd = reinterpret_cast_ptr<uint16_t*>(inData + readPtr + regionSize);
-        uint16_t* copyDst = reinterpret_cast_ptr<uint16_t*>(outData + writePtr);
-        ASSERT(!(regionSize % 2));
-        ASSERT(!(readPtr % 2));
-        ASSERT(!(writePtr % 2));
-        while (copySource != copyEnd)
-            *copyDst++ = *copySource++;
-        m_assembler->recordLinkOffsets(readPtr, jumpsToLink[i].from(), offset);
-        readPtr += regionSize;
-        writePtr += regionSize;
-            
-        // Calculate absolute address of the jump target, in the case of backwards
-        // branches we need to be precise, forward branches we are pessimistic
-        const uint8_t* target;
-        if (jumpsToLink[i].to() >= jumpsToLink[i].from())
-            target = outData + jumpsToLink[i].to() - offset; // Compensate for what we have collapsed so far
-        else
-            target = outData + jumpsToLink[i].to() - m_assembler->executableOffsetFor(jumpsToLink[i].to());
-            
-        JumpLinkType jumpLinkType = m_assembler->computeJumpType(jumpsToLink[i], outData + writePtr, target);
-        // Compact branch if we can...
-        if (m_assembler->canCompact(jumpsToLink[i].type())) {
-            // Step back in the write stream
-            int32_t delta = m_assembler->jumpSizeDelta(jumpsToLink[i].type(), jumpLinkType);
-            if (delta) {
-                writePtr -= delta;
-                m_assembler->recordLinkOffsets(jumpsToLink[i].from() - delta, readPtr, readPtr - writePtr);
-            }
-        }
-        jumpsToLink[i].setFrom(writePtr);
-    }
-    // Copy everything after the last jump
-    memcpy(outData + writePtr, inData + readPtr, m_initialSize - readPtr);
-    m_assembler->recordLinkOffsets(readPtr, m_initialSize, readPtr - writePtr);
-        
-    for (unsigned i = 0; i < jumpCount; ++i) {
-        uint8_t* location = outData + jumpsToLink[i].from();
-        uint8_t* target = outData + jumpsToLink[i].to() - m_assembler->executableOffsetFor(jumpsToLink[i].to());
-        m_assembler->link(jumpsToLink[i], location, target);
-    }
-
-    jumpsToLink.clear();
-    m_size = writePtr + m_initialSize - readPtr;
-    m_executableMemory->shrink(m_size);
-
-#if DUMP_LINK_STATISTICS
-    dumpLinkStatistics(m_code, m_initialSize, m_size);
-#endif
-#if DUMP_CODE
-    dumpCode(m_code, m_size);
-#endif
-#endif
-}
-
-void LinkBuffer::performFinalization()
-{
-#ifndef NDEBUG
-    ASSERT(!m_completed);
-    ASSERT(isValid());
-    m_completed = true;
-#endif
-    
-#if ENABLE(BRANCH_COMPACTION)
-    ExecutableAllocator::makeExecutable(code(), m_initialSize);
-#else
-    ASSERT(m_size <= INT_MAX);
-    ExecutableAllocator::makeExecutable(code(), static_cast<int>(m_size));
-#endif
-    MacroAssembler::cacheFlush(code(), m_size);
-}
-
 #if DUMP_LINK_STATISTICS
 void LinkBuffer::dumpLinkStatistics(void* code, size_t initializeSize, size_t finalSize)
 {
-- 
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