JavaScriptCore-7600.1.4.9.tar.gz

[apple/javascriptcore.git] / llint / LLIntEntrypoint.cpp

diff --git a/llint/LLIntEntrypoint.cpp b/llint/LLIntEntrypoint.cpp
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+++ b/llint/LLIntEntrypoint.cpp
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+/*
+ * Copyright (C) 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
+ * 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 "LLIntEntrypoint.h"
+#include "CodeBlock.h"
+#include "HeapInlines.h"
+#include "JITCode.h"
+#include "JSObject.h"
+#include "LLIntThunks.h"
+#include "LowLevelInterpreter.h"
+#include "MaxFrameExtentForSlowPathCall.h"
+#include "StackAlignment.h"
+#include "VM.h"
+
+namespace JSC { namespace LLInt {
+
+static void setFunctionEntrypoint(VM& vm, CodeBlock* codeBlock)
+{
+    CodeSpecializationKind kind = codeBlock->specializationKind();
+    
+#if ENABLE(JIT)
+    if (vm.canUseJIT()) {
+        if (kind == CodeForCall) {
+            codeBlock->setJITCode(
+                adoptRef(new DirectJITCode(vm.getCTIStub(functionForCallEntryThunkGenerator), vm.getCTIStub(functionForCallArityCheckThunkGenerator).code(), JITCode::InterpreterThunk)));
+            return;
+        }
+        ASSERT(kind == CodeForConstruct);
+        codeBlock->setJITCode(
+            adoptRef(new DirectJITCode(vm.getCTIStub(functionForConstructEntryThunkGenerator), vm.getCTIStub(functionForConstructArityCheckThunkGenerator).code(), JITCode::InterpreterThunk)));
+        return;
+    }
+#endif // ENABLE(JIT)
+
+    UNUSED_PARAM(vm);
+    if (kind == CodeForCall) {
+        codeBlock->setJITCode(
+            adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_function_for_call_prologue), MacroAssemblerCodePtr::createLLIntCodePtr(llint_function_for_call_arity_check), JITCode::InterpreterThunk)));
+        return;
+    }
+    ASSERT(kind == CodeForConstruct);
+    codeBlock->setJITCode(
+        adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_function_for_construct_prologue), MacroAssemblerCodePtr::createLLIntCodePtr(llint_function_for_construct_arity_check), JITCode::InterpreterThunk)));
+}
+
+static void setEvalEntrypoint(VM& vm, CodeBlock* codeBlock)
+{
+#if ENABLE(JIT)
+    if (vm.canUseJIT()) {
+        codeBlock->setJITCode(
+            adoptRef(new DirectJITCode(vm.getCTIStub(evalEntryThunkGenerator), MacroAssemblerCodePtr(), JITCode::InterpreterThunk)));
+        return;
+    }
+#endif // ENABLE(JIT)
+
+    UNUSED_PARAM(vm);
+    codeBlock->setJITCode(
+        adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_eval_prologue), MacroAssemblerCodePtr(), JITCode::InterpreterThunk)));
+}
+
+static void setProgramEntrypoint(VM& vm, CodeBlock* codeBlock)
+{
+#if ENABLE(JIT)
+    if (vm.canUseJIT()) {
+        codeBlock->setJITCode(
+            adoptRef(new DirectJITCode(vm.getCTIStub(programEntryThunkGenerator), MacroAssemblerCodePtr(), JITCode::InterpreterThunk)));
+        return;
+    }
+#endif // ENABLE(JIT)
+
+    UNUSED_PARAM(vm);
+    codeBlock->setJITCode(
+        adoptRef(new DirectJITCode(MacroAssemblerCodeRef::createLLIntCodeRef(llint_program_prologue), MacroAssemblerCodePtr(), JITCode::InterpreterThunk)));
+}
+
+void setEntrypoint(VM& vm, CodeBlock* codeBlock)
+{
+    switch (codeBlock->codeType()) {
+    case GlobalCode:
+        setProgramEntrypoint(vm, codeBlock);
+        return;
+    case EvalCode:
+        setEvalEntrypoint(vm, codeBlock);
+        return;
+    case FunctionCode:
+        setFunctionEntrypoint(vm, codeBlock);
+        return;
+    }
+    
+    RELEASE_ASSERT_NOT_REACHED();
+}
+
+unsigned frameRegisterCountFor(CodeBlock* codeBlock)
+{
+    ASSERT(static_cast<unsigned>(codeBlock->m_numCalleeRegisters) == WTF::roundUpToMultipleOf(stackAlignmentRegisters(), static_cast<unsigned>(codeBlock->m_numCalleeRegisters)));
+
+    return roundLocalRegisterCountForFramePointerOffset(codeBlock->m_numCalleeRegisters + maxFrameExtentForSlowPathCallInRegisters);
+}
+
+} } // namespace JSC::LLInt