--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/3rdparty/webkit/JavaScriptCore/jit/JITStubCall.h Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,236 @@
+/*
+ * Copyright (C) 2008 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.
+ */
+
+#ifndef JITStubCall_h
+#define JITStubCall_h
+
+#include "MacroAssemblerCodeRef.h"
+
+#if ENABLE(JIT)
+
+namespace JSC {
+
+ class JITStubCall {
+ public:
+ JITStubCall(JIT* jit, JSObject* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
+ : m_jit(jit)
+ , m_stub(stub)
+ , m_returnType(Cell)
+ , m_stackIndex(stackIndexStart)
+ {
+ }
+
+ JITStubCall(JIT* jit, JSPropertyNameIterator* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
+ : m_jit(jit)
+ , m_stub(stub)
+ , m_returnType(Cell)
+ , m_stackIndex(stackIndexStart)
+ {
+ }
+
+ JITStubCall(JIT* jit, void* (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
+ : m_jit(jit)
+ , m_stub(stub)
+ , m_returnType(VoidPtr)
+ , m_stackIndex(stackIndexStart)
+ {
+ }
+
+ JITStubCall(JIT* jit, int (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
+ : m_jit(jit)
+ , m_stub(stub)
+ , m_returnType(Int)
+ , m_stackIndex(stackIndexStart)
+ {
+ }
+
+ JITStubCall(JIT* jit, bool (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
+ : m_jit(jit)
+ , m_stub(stub)
+ , m_returnType(Int)
+ , m_stackIndex(stackIndexStart)
+ {
+ }
+
+ JITStubCall(JIT* jit, void (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
+ : m_jit(jit)
+ , m_stub(stub)
+ , m_returnType(Void)
+ , m_stackIndex(stackIndexStart)
+ {
+ }
+
+#if USE(JSVALUE32_64)
+ JITStubCall(JIT* jit, EncodedJSValue (JIT_STUB *stub)(STUB_ARGS_DECLARATION))
+ : m_jit(jit)
+ , m_stub(stub)
+ , m_returnType(Value)
+ , m_stackIndex(stackIndexStart)
+ {
+ }
+#endif
+
+ // Arguments are added first to last.
+
+ void skipArgument()
+ {
+ m_stackIndex += stackIndexStep;
+ }
+
+ void addArgument(JIT::Imm32 argument)
+ {
+ m_jit->poke(argument, m_stackIndex);
+ m_stackIndex += stackIndexStep;
+ }
+
+ void addArgument(JIT::ImmPtr argument)
+ {
+ m_jit->poke(argument, m_stackIndex);
+ m_stackIndex += stackIndexStep;
+ }
+
+ void addArgument(JIT::RegisterID argument)
+ {
+ m_jit->poke(argument, m_stackIndex);
+ m_stackIndex += stackIndexStep;
+ }
+
+ void addArgument(const JSValue& value)
+ {
+ m_jit->poke(JIT::Imm32(value.payload()), m_stackIndex);
+ m_jit->poke(JIT::Imm32(value.tag()), m_stackIndex + 1);
+ m_stackIndex += stackIndexStep;
+ }
+
+ void addArgument(JIT::RegisterID tag, JIT::RegisterID payload)
+ {
+ m_jit->poke(payload, m_stackIndex);
+ m_jit->poke(tag, m_stackIndex + 1);
+ m_stackIndex += stackIndexStep;
+ }
+
+#if USE(JSVALUE32_64)
+ void addArgument(unsigned srcVirtualRegister)
+ {
+ if (m_jit->m_codeBlock->isConstantRegisterIndex(srcVirtualRegister)) {
+ addArgument(m_jit->getConstantOperand(srcVirtualRegister));
+ return;
+ }
+
+ m_jit->emitLoad(srcVirtualRegister, JIT::regT1, JIT::regT0);
+ addArgument(JIT::regT1, JIT::regT0);
+ }
+
+ void getArgument(size_t argumentNumber, JIT::RegisterID tag, JIT::RegisterID payload)
+ {
+ size_t stackIndex = stackIndexStart + (argumentNumber * stackIndexStep);
+ m_jit->peek(payload, stackIndex);
+ m_jit->peek(tag, stackIndex + 1);
+ }
+#else
+ void addArgument(unsigned src, JIT::RegisterID scratchRegister) // src is a virtual register.
+ {
+ if (m_jit->m_codeBlock->isConstantRegisterIndex(src))
+ addArgument(JIT::ImmPtr(JSValue::encode(m_jit->m_codeBlock->getConstant(src))));
+ else {
+ m_jit->loadPtr(JIT::Address(JIT::callFrameRegister, src * sizeof(Register)), scratchRegister);
+ addArgument(scratchRegister);
+ }
+ m_jit->killLastResultRegister();
+ }
+#endif
+
+ JIT::Call call()
+ {
+#if ENABLE(OPCODE_SAMPLING)
+ if (m_jit->m_bytecodeIndex != (unsigned)-1)
+ m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeIndex, true);
+#endif
+
+ m_jit->restoreArgumentReference();
+ JIT::Call call = m_jit->call();
+ m_jit->m_calls.append(CallRecord(call, m_jit->m_bytecodeIndex, m_stub.value()));
+
+#if ENABLE(OPCODE_SAMPLING)
+ if (m_jit->m_bytecodeIndex != (unsigned)-1)
+ m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeIndex, false);
+#endif
+
+#if USE(JSVALUE32_64)
+ m_jit->unmap();
+#else
+ m_jit->killLastResultRegister();
+#endif
+ return call;
+ }
+
+#if USE(JSVALUE32_64)
+ JIT::Call call(unsigned dst) // dst is a virtual register.
+ {
+ ASSERT(m_returnType == Value || m_returnType == Cell);
+ JIT::Call call = this->call();
+ if (m_returnType == Value)
+ m_jit->emitStore(dst, JIT::regT1, JIT::regT0);
+ else
+ m_jit->emitStoreCell(dst, JIT::returnValueRegister);
+ return call;
+ }
+#else
+ JIT::Call call(unsigned dst) // dst is a virtual register.
+ {
+ ASSERT(m_returnType == VoidPtr || m_returnType == Cell);
+ JIT::Call call = this->call();
+ m_jit->emitPutVirtualRegister(dst);
+ return call;
+ }
+#endif
+
+ JIT::Call call(JIT::RegisterID dst) // dst is a machine register.
+ {
+#if USE(JSVALUE32_64)
+ ASSERT(m_returnType == Value || m_returnType == VoidPtr || m_returnType == Int || m_returnType == Cell);
+#else
+ ASSERT(m_returnType == VoidPtr || m_returnType == Int || m_returnType == Cell);
+#endif
+ JIT::Call call = this->call();
+ if (dst != JIT::returnValueRegister)
+ m_jit->move(JIT::returnValueRegister, dst);
+ return call;
+ }
+
+ private:
+ static const size_t stackIndexStep = sizeof(EncodedJSValue) == 2 * sizeof(void*) ? 2 : 1;
+ static const size_t stackIndexStart = 1; // Index 0 is reserved for restoreArgumentReference().
+
+ JIT* m_jit;
+ FunctionPtr m_stub;
+ enum { Void, VoidPtr, Int, Value, Cell } m_returnType;
+ size_t m_stackIndex;
+ };
+}
+
+#endif // ENABLE(JIT)
+
+#endif // JITStubCall_h