--- /dev/null
+/*
+ * 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.
+ */
+
+#include "config.h"
+
+#if ENABLE(JIT)
+#if USE(JSVALUE32_64)
+#include "JIT.h"
+
+#include "CodeBlock.h"
+#include "Interpreter.h"
+#include "JITInlineMethods.h"
+#include "JITStubCall.h"
+#include "JSArray.h"
+#include "JSFunction.h"
+#include "ResultType.h"
+#include "SamplingTool.h"
+
+#ifndef NDEBUG
+#include <stdio.h>
+#endif
+
+using namespace std;
+
+namespace JSC {
+
+void JIT::compileOpCallInitializeCallFrame()
+{
+ // regT0 holds callee, regT1 holds argCount
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT3); // scopeChain
+ emitPutIntToCallFrameHeader(regT1, RegisterFile::ArgumentCount);
+ emitPutCellToCallFrameHeader(regT0, RegisterFile::Callee);
+ emitPutCellToCallFrameHeader(regT3, RegisterFile::ScopeChain);
+}
+
+void JIT::emit_op_call_put_result(Instruction* instruction)
+{
+ int dst = instruction[1].u.operand;
+ emitStore(dst, regT1, regT0);
+}
+
+void JIT::compileOpCallVarargs(Instruction* instruction)
+{
+ int callee = instruction[1].u.operand;
+ int argCountRegister = instruction[2].u.operand;
+ int registerOffset = instruction[3].u.operand;
+
+ emitLoad(callee, regT1, regT0);
+ emitLoadPayload(argCountRegister, regT2); // argCount
+ addPtr(Imm32(registerOffset), regT2, regT3); // registerOffset
+
+ emitJumpSlowCaseIfNotJSCell(callee, regT1);
+ addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr)));
+
+ // Speculatively roll the callframe, assuming argCount will match the arity.
+ mul32(TrustedImm32(sizeof(Register)), regT3, regT3);
+ addPtr(callFrameRegister, regT3);
+ store32(TrustedImm32(JSValue::CellTag), tagFor(RegisterFile::CallerFrame, regT3));
+ storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame, regT3));
+ move(regT3, callFrameRegister);
+
+ move(regT2, regT1); // argCount
+
+ emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int callee = instruction[1].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, callee);
+ linkSlowCase(iter);
+
+ JITStubCall stubCall(this, cti_op_call_NotJSFunction);
+ stubCall.addArgument(regT1, regT0);
+ stubCall.addArgument(regT3);
+ stubCall.addArgument(regT2);
+ stubCall.call();
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::emit_op_ret(Instruction* currentInstruction)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+
+ emitLoad(dst, regT1, regT0);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ restoreReturnAddressBeforeReturn(regT2);
+ ret();
+}
+
+void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
+{
+ unsigned result = currentInstruction[1].u.operand;
+ unsigned thisReg = currentInstruction[2].u.operand;
+
+ emitLoad(result, regT1, regT0);
+ Jump notJSCell = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ Jump notObject = branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(ObjectType));
+
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ restoreReturnAddressBeforeReturn(regT2);
+ ret();
+
+ notJSCell.link(this);
+ notObject.link(this);
+ emitLoad(thisReg, regT1, regT0);
+
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ restoreReturnAddressBeforeReturn(regT2);
+ ret();
+}
+
+void JIT::emitSlow_op_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call);
+}
+
+void JIT::emitSlow_op_call_eval(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call_eval);
+}
+
+void JIT::emitSlow_op_call_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ compileOpCallVarargsSlowCase(currentInstruction, iter);
+}
+
+void JIT::emitSlow_op_construct(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_construct);
+}
+
+void JIT::emit_op_call(Instruction* currentInstruction)
+{
+ compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++);
+}
+
+void JIT::emit_op_call_eval(Instruction* currentInstruction)
+{
+ compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex++);
+}
+
+void JIT::emit_op_call_varargs(Instruction* currentInstruction)
+{
+ compileOpCallVarargs(currentInstruction);
+}
+
+void JIT::emit_op_construct(Instruction* currentInstruction)
+{
+ compileOpCall(op_construct, currentInstruction, m_callLinkInfoIndex++);
+}
+
+#if !ENABLE(JIT_OPTIMIZE_CALL)
+
+/* ------------------------------ BEGIN: !ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+
+void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned)
+{
+ int callee = instruction[1].u.operand;
+ int argCount = instruction[2].u.operand;
+ int registerOffset = instruction[3].u.operand;
+
+ Jump wasEval;
+ if (opcodeID == op_call_eval) {
+ JITStubCall stubCall(this, cti_op_call_eval);
+ stubCall.addArgument(callee);
+ stubCall.addArgument(JIT::Imm32(registerOffset));
+ stubCall.addArgument(JIT::Imm32(argCount));
+ stubCall.call();
+ wasEval = branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag));
+ }
+
+ emitLoad(callee, regT1, regT0);
+
+ emitJumpSlowCaseIfNotJSCell(callee, regT1);
+ addSlowCase(branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr)));
+
+ // Speculatively roll the callframe, assuming argCount will match the arity.
+ store32(TrustedImm32(JSValue::CellTag), tagFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
+ storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
+ addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
+ move(TrustedImm32(argCount), regT1);
+
+ emitNakedCall(opcodeID == op_construct ? m_globalData->jitStubs->ctiVirtualConstruct() : m_globalData->jitStubs->ctiVirtualCall());
+
+ if (opcodeID == op_call_eval)
+ wasEval.link(this);
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned, OpcodeID opcodeID)
+{
+ int callee = instruction[1].u.operand;
+ int argCount = instruction[2].u.operand;
+ int registerOffset = instruction[3].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, callee);
+ linkSlowCase(iter);
+
+ JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
+ stubCall.addArgument(callee);
+ stubCall.addArgument(JIT::Imm32(registerOffset));
+ stubCall.addArgument(JIT::Imm32(argCount));
+ stubCall.call();
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+#else // !ENABLE(JIT_OPTIMIZE_CALL)
+
+/* ------------------------------ BEGIN: ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+
+void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
+{
+ int callee = instruction[1].u.operand;
+ int argCount = instruction[2].u.operand;
+ int registerOffset = instruction[3].u.operand;
+
+ Jump wasEval;
+ if (opcodeID == op_call_eval) {
+ JITStubCall stubCall(this, cti_op_call_eval);
+ stubCall.addArgument(callee);
+ stubCall.addArgument(JIT::Imm32(registerOffset));
+ stubCall.addArgument(JIT::Imm32(argCount));
+ stubCall.call();
+ wasEval = branch32(NotEqual, regT1, TrustedImm32(JSValue::EmptyValueTag));
+ }
+
+ emitLoad(callee, regT1, regT0);
+
+ DataLabelPtr addressOfLinkedFunctionCheck;
+
+ BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+
+ Jump jumpToSlow = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, TrustedImmPtr(0));
+
+ END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+
+ addSlowCase(jumpToSlow);
+ ASSERT_JIT_OFFSET(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow), patchOffsetOpCallCompareToJump);
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].isCall = opcodeID != op_construct;
+
+ addSlowCase(branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag)));
+
+ // The following is the fast case, only used whan a callee can be linked.
+
+ // Fast version of stack frame initialization, directly relative to edi.
+ // Note that this omits to set up RegisterFile::CodeBlock, which is set in the callee
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT2);
+
+ store32(TrustedImm32(JSValue::Int32Tag), tagFor(registerOffset + RegisterFile::ArgumentCount));
+ store32(Imm32(argCount), payloadFor(registerOffset + RegisterFile::ArgumentCount));
+ storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
+ emitStore(registerOffset + RegisterFile::Callee, regT1, regT0);
+ store32(TrustedImm32(JSValue::CellTag), tagFor(registerOffset + RegisterFile::ScopeChain));
+ store32(regT2, payloadFor(registerOffset + RegisterFile::ScopeChain));
+ addPtr(Imm32(registerOffset * sizeof(Register)), callFrameRegister);
+
+ // Call to the callee
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
+
+ if (opcodeID == op_call_eval)
+ wasEval.link(this);
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex, OpcodeID opcodeID)
+{
+ int callee = instruction[1].u.operand;
+ int argCount = instruction[2].u.operand;
+ int registerOffset = instruction[3].u.operand;
+
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+
+ // Fast check for JS function.
+ Jump callLinkFailNotObject = branch32(NotEqual, regT1, TrustedImm32(JSValue::CellTag));
+ Jump callLinkFailNotJSFunction = branchPtr(NotEqual, Address(regT0), TrustedImmPtr(m_globalData->jsFunctionVPtr));
+
+ // Speculatively roll the callframe, assuming argCount will match the arity.
+ store32(TrustedImm32(JSValue::CellTag), tagFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
+ storePtr(callFrameRegister, payloadFor(RegisterFile::CallerFrame + registerOffset, callFrameRegister));
+ addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
+ move(Imm32(argCount), regT1);
+
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(opcodeID == op_construct ? m_globalData->jitStubs->ctiVirtualConstructLink() : m_globalData->jitStubs->ctiVirtualCallLink());
+
+ // Done! - return back to the hot path.
+ ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_call_eval));
+ ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_construct));
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_call));
+
+ // This handles host functions
+ callLinkFailNotObject.link(this);
+ callLinkFailNotJSFunction.link(this);
+
+ JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
+ stubCall.addArgument(callee);
+ stubCall.addArgument(JIT::Imm32(registerOffset));
+ stubCall.addArgument(JIT::Imm32(argCount));
+ stubCall.call();
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+/* ------------------------------ END: !ENABLE / ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+
+#endif // !ENABLE(JIT_OPTIMIZE_CALL)
+
+} // namespace JSC
+
+#endif // USE(JSVALUE32_64)
+#endif // ENABLE(JIT)
projects / apple / javascriptcore.git / blobdiff