JavaScriptCore-7600.1.4.13.1.tar.gz

[apple/javascriptcore.git] / jit / JITCode.cpp

diff --git a/jit/JITCode.cpp b/jit/JITCode.cpp
index 5cfa6304b2a37ea9942d9f73ed90372798b0f0c4..df0759cbf9fc58a9cdf68be08f6f6933f11e04c4 100644 (file)
--- a/jit/JITCode.cpp
+++ b/jit/JITCode.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008, 2012 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2012, 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -26,8 +26,200 @@
 #include "config.h"
 #include "JITCode.h"
 
+#include "LLIntThunks.h"
+#include "JSCInlines.h"
+#include "RegisterPreservationWrapperGenerator.h"
 #include <wtf/PrintStream.h>
 
+namespace JSC {
+
+JITCode::JITCode(JITType jitType)
+    : m_jitType(jitType)
+{
+}
+
+JITCode::~JITCode()
+{
+}
+
+JSValue JITCode::execute(VM* vm, ProtoCallFrame* protoCallFrame)
+{
+    JSValue result = JSValue::decode(callToJavaScript(executableAddress(), vm, protoCallFrame));
+    return vm->exception() ? jsNull() : result;
+}
+
+DFG::CommonData* JITCode::dfgCommon()
+{
+    RELEASE_ASSERT_NOT_REACHED();
+    return 0;
+}
+
+DFG::JITCode* JITCode::dfg()
+{
+    RELEASE_ASSERT_NOT_REACHED();
+    return 0;
+}
+
+FTL::JITCode* JITCode::ftl()
+{
+    RELEASE_ASSERT_NOT_REACHED();
+    return 0;
+}
+
+FTL::ForOSREntryJITCode* JITCode::ftlForOSREntry()
+{
+    RELEASE_ASSERT_NOT_REACHED();
+    return 0;
+}
+
+JITCodeWithCodeRef::JITCodeWithCodeRef(JITType jitType)
+    : JITCode(jitType)
+{
+}
+
+JITCodeWithCodeRef::JITCodeWithCodeRef(CodeRef ref, JITType jitType)
+    : JITCode(jitType)
+    , m_ref(ref)
+{
+}
+
+JITCodeWithCodeRef::~JITCodeWithCodeRef()
+{
+}
+
+void* JITCodeWithCodeRef::executableAddressAtOffset(size_t offset)
+{
+    RELEASE_ASSERT(m_ref);
+    return reinterpret_cast<char*>(m_ref.code().executableAddress()) + offset;
+}
+
+void* JITCodeWithCodeRef::dataAddressAtOffset(size_t offset)
+{
+    RELEASE_ASSERT(m_ref);
+    ASSERT(offset <= size()); // use <= instead of < because it is valid to ask for an address at the exclusive end of the code.
+    return reinterpret_cast<char*>(m_ref.code().dataLocation()) + offset;
+}
+
+unsigned JITCodeWithCodeRef::offsetOf(void* pointerIntoCode)
+{
+    RELEASE_ASSERT(m_ref);
+    intptr_t result = reinterpret_cast<intptr_t>(pointerIntoCode) - reinterpret_cast<intptr_t>(m_ref.code().executableAddress());
+    ASSERT(static_cast<intptr_t>(static_cast<unsigned>(result)) == result);
+    return static_cast<unsigned>(result);
+}
+
+size_t JITCodeWithCodeRef::size()
+{
+    RELEASE_ASSERT(m_ref);
+    return m_ref.size();
+}
+
+bool JITCodeWithCodeRef::contains(void* address)
+{
+    RELEASE_ASSERT(m_ref);
+    return m_ref.executableMemory()->contains(address);
+}
+
+DirectJITCode::DirectJITCode(JITType jitType)
+    : JITCodeWithCodeRef(jitType)
+{
+}
+
+DirectJITCode::DirectJITCode(JITCode::CodeRef ref, JITCode::CodePtr withArityCheck, JITType jitType)
+    : JITCodeWithCodeRef(ref, jitType)
+    , m_withArityCheck(withArityCheck)
+{
+}
+
+DirectJITCode::~DirectJITCode()
+{
+}
+
+void DirectJITCode::initializeCodeRef(JITCode::CodeRef ref, JITCode::CodePtr withArityCheck)
+{
+    RELEASE_ASSERT(!m_ref);
+    m_ref = ref;
+    m_withArityCheck = withArityCheck;
+}
+
+DirectJITCode::RegisterPreservationWrappers* DirectJITCode::ensureWrappers()
+{
+    if (!m_wrappers)
+        m_wrappers = std::make_unique<RegisterPreservationWrappers>();
+    return m_wrappers.get();
+}
+
+JITCode::CodePtr DirectJITCode::addressForCall(
+    VM& vm, ExecutableBase* executable, ArityCheckMode arity,
+    RegisterPreservationMode registers)
+{
+    switch (arity) {
+    case ArityCheckNotRequired:
+        switch (registers) {
+        case RegisterPreservationNotRequired:
+            RELEASE_ASSERT(m_ref);
+            return m_ref.code();
+        case MustPreserveRegisters: {
+#if ENABLE(JIT)
+            RegisterPreservationWrappers* wrappers = ensureWrappers();
+            if (!wrappers->withoutArityCheck)
+                wrappers->withoutArityCheck = generateRegisterPreservationWrapper(vm, executable, m_ref.code());
+            return wrappers->withoutArityCheck.code();
+#else
+            UNUSED_PARAM(vm);
+            UNUSED_PARAM(executable);
+            RELEASE_ASSERT_NOT_REACHED();
+#endif
+        } }
+    case MustCheckArity:
+        switch (registers) {
+        case RegisterPreservationNotRequired:
+            RELEASE_ASSERT(m_withArityCheck);
+            return m_withArityCheck;
+        case MustPreserveRegisters: {
+#if ENABLE(JIT)
+            RegisterPreservationWrappers* wrappers = ensureWrappers();
+            if (!wrappers->withArityCheck)
+                wrappers->withArityCheck = generateRegisterPreservationWrapper(vm, executable, m_withArityCheck);
+            return wrappers->withArityCheck.code();
+#else
+            RELEASE_ASSERT_NOT_REACHED();
+#endif
+        } }
+    }
+    RELEASE_ASSERT_NOT_REACHED();
+    return CodePtr();
+}
+
+NativeJITCode::NativeJITCode(JITType jitType)
+    : JITCodeWithCodeRef(jitType)
+{
+}
+
+NativeJITCode::NativeJITCode(CodeRef ref, JITType jitType)
+    : JITCodeWithCodeRef(ref, jitType)
+{
+}
+
+NativeJITCode::~NativeJITCode()
+{
+}
+
+void NativeJITCode::initializeCodeRef(CodeRef ref)
+{
+    ASSERT(!m_ref);
+    m_ref = ref;
+}
+
+JITCode::CodePtr NativeJITCode::addressForCall(
+    VM&, ExecutableBase*, ArityCheckMode, RegisterPreservationMode)
+{
+    RELEASE_ASSERT(!!m_ref);
+    return m_ref.code();
+}
+
+} // namespace JSC
+
 namespace WTF {
 
 void printInternal(PrintStream& out, JSC::JITCode::JITType type)
@@ -48,6 +240,9 @@ void printInternal(PrintStream& out, JSC::JITCode::JITType type)
     case JSC::JITCode::DFGJIT:
         out.print("DFG");
         return;
+    case JSC::JITCode::FTLJIT:
+        out.print("FTL");
+        return;
     default:
         CRASH();
         return;