#include "CodeBlock.h"
#include "JITInlineMethods.h"
+#include "JITStubCall.h"
#include "JSArray.h"
#include "JSFunction.h"
#include "Interpreter.h"
namespace JSC {
-void JIT::unlinkCall(CallLinkInfo* callLinkInfo)
+#if USE(JSVALUE32_64)
+
+void JIT::compileOpCallInitializeCallFrame()
+{
+ // regT0 holds callee, regT1 holds argCount
+ store32(regT1, Address(callFrameRegister, RegisterFile::ArgumentCount * static_cast<int>(sizeof(Register))));
+
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_data) + OBJECT_OFFSETOF(ScopeChain, m_node)), regT1); // scopeChain
+
+ emitStore(static_cast<unsigned>(RegisterFile::OptionalCalleeArguments), JSValue());
+ storePtr(regT0, Address(callFrameRegister, RegisterFile::Callee * static_cast<int>(sizeof(Register)))); // callee
+ storePtr(regT1, Address(callFrameRegister, RegisterFile::ScopeChain * static_cast<int>(sizeof(Register)))); // scopeChain
+}
+
+void JIT::compileOpCallSetupArgs(Instruction* instruction)
{
- // When the JSFunction is deleted the pointer embedded in the instruction stream will no longer be valid
- // (and, if a new JSFunction happened to be constructed at the same location, we could get a false positive
- // match). Reset the check so it no longer matches.
- DataLabelPtr::patch(callLinkInfo->hotPathBegin, JSValuePtr::encode(jsImpossibleValue()));
+ int argCount = instruction[3].u.operand;
+ int registerOffset = instruction[4].u.operand;
+
+ emitPutJITStubArg(regT1, regT0, 0);
+ emitPutJITStubArgConstant(registerOffset, 1);
+ emitPutJITStubArgConstant(argCount, 2);
+}
+
+void JIT::compileOpConstructSetupArgs(Instruction* instruction)
+{
+ int argCount = instruction[3].u.operand;
+ int registerOffset = instruction[4].u.operand;
+ int proto = instruction[5].u.operand;
+ int thisRegister = instruction[6].u.operand;
+
+ emitPutJITStubArg(regT1, regT0, 0);
+ emitPutJITStubArgConstant(registerOffset, 1);
+ emitPutJITStubArgConstant(argCount, 2);
+ emitPutJITStubArgFromVirtualRegister(proto, 3, regT2, regT3);
+ emitPutJITStubArgConstant(thisRegister, 4);
}
-void JIT::linkCall(JSFunction* callee, CodeBlock* calleeCodeBlock, void* ctiCode, CallLinkInfo* callLinkInfo, int callerArgCount)
+void JIT::compileOpCallVarargsSetupArgs(Instruction*)
{
- // Currently we only link calls with the exact number of arguments.
- if (callerArgCount == calleeCodeBlock->m_numParameters) {
- ASSERT(!callLinkInfo->isLinked());
+ emitPutJITStubArg(regT1, regT0, 0);
+ emitPutJITStubArg(regT3, 1); // registerOffset
+ emitPutJITStubArg(regT2, 2); // argCount
+}
+
+void JIT::compileOpCallVarargs(Instruction* instruction)
+{
+ int dst = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
+ int argCountRegister = instruction[3].u.operand;
+ int registerOffset = instruction[4].u.operand;
+
+ emitLoad(callee, regT1, regT0);
+ emitLoadPayload(argCountRegister, regT2); // argCount
+ addPtr(Imm32(registerOffset), regT2, regT3); // registerOffset
+
+ compileOpCallVarargsSetupArgs(instruction);
+
+ emitJumpSlowCaseIfNotJSCell(callee, regT1);
+ addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsFunctionVPtr)));
+
+ // Speculatively roll the callframe, assuming argCount will match the arity.
+ mul32(Imm32(sizeof(Register)), regT3, regT3);
+ addPtr(callFrameRegister, regT3);
+ storePtr(callFrameRegister, Address(regT3, RegisterFile::CallerFrame * static_cast<int>(sizeof(Register))));
+ move(regT3, callFrameRegister);
+
+ move(regT2, regT1); // argCount
+
+ emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
+
+ emitStore(dst, regT1, regT0);
- calleeCodeBlock->addCaller(callLinkInfo);
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int dst = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, callee);
+ linkSlowCase(iter);
+
+ JITStubCall stubCall(this, cti_op_call_NotJSFunction);
+ stubCall.call(dst); // In the interpreter, the callee puts the return value in dst.
+
+ map(m_bytecodeIndex + OPCODE_LENGTH(op_call_varargs), dst, regT1, regT0);
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::emit_op_ret(Instruction* currentInstruction)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+
+ // We could JIT generate the deref, only calling out to C when the refcount hits zero.
+ if (m_codeBlock->needsFullScopeChain())
+ JITStubCall(this, cti_op_ret_scopeChain).call();
+
+ emitLoad(dst, regT1, regT0);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ restoreReturnAddressBeforeReturn(regT2);
+ ret();
+}
+
+void JIT::emit_op_construct_verify(Instruction* currentInstruction)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+
+ emitLoad(dst, regT1, regT0);
+ addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::CellTag)));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
+ addSlowCase(branch8(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo) + OBJECT_OFFSETOF(TypeInfo, m_type)), Imm32(ObjectType)));
+}
+
+void JIT::emitSlow_op_construct_verify(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned src = currentInstruction[2].u.operand;
+
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+ emitLoad(src, regT1, regT0);
+ emitStore(dst, regT1, regT0);
+}
+
+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_load_varargs(Instruction* currentInstruction)
+{
+ int argCountDst = currentInstruction[1].u.operand;
+ int argsOffset = currentInstruction[2].u.operand;
+
+ JITStubCall stubCall(this, cti_op_load_varargs);
+ stubCall.addArgument(Imm32(argsOffset));
+ stubCall.call();
+ // Stores a naked int32 in the register file.
+ store32(returnValueRegister, Address(callFrameRegister, argCountDst * sizeof(Register)));
+}
+
+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 dst = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
+ int argCount = instruction[3].u.operand;
+ int registerOffset = instruction[4].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, Imm32(JSValue::EmptyValueTag));
+ }
+
+ emitLoad(callee, regT1, regT0);
+
+ if (opcodeID == op_call)
+ compileOpCallSetupArgs(instruction);
+ else if (opcodeID == op_construct)
+ compileOpConstructSetupArgs(instruction);
+
+ emitJumpSlowCaseIfNotJSCell(callee, regT1);
+ addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsFunctionVPtr)));
+
+ // First, in the case of a construct, allocate the new object.
+ if (opcodeID == op_construct) {
+ JITStubCall(this, cti_op_construct_JSConstruct).call(registerOffset - RegisterFile::CallFrameHeaderSize - argCount);
+ emitLoad(callee, regT1, regT0);
+ }
+
+ // Speculatively roll the callframe, assuming argCount will match the arity.
+ storePtr(callFrameRegister, Address(callFrameRegister, (RegisterFile::CallerFrame + registerOffset) * static_cast<int>(sizeof(Register))));
+ addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
+ move(Imm32(argCount), regT1);
+
+ emitNakedCall(m_globalData->jitStubs.ctiVirtualCall());
+
+ if (opcodeID == op_call_eval)
+ wasEval.link(this);
+
+ emitStore(dst, regT1, regT0);
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned, OpcodeID opcodeID)
+{
+ int dst = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, callee);
+ linkSlowCase(iter);
+
+ JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
+ stubCall.call(dst); // In the interpreter, the callee puts the return value in dst.
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+#else // !ENABLE(JIT_OPTIMIZE_CALL)
+
+/* ------------------------------ BEGIN: ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+
+void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
+{
+ int dst = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
+ int argCount = instruction[3].u.operand;
+ int registerOffset = instruction[4].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, Imm32(JSValue::EmptyValueTag));
+ }
+
+ emitLoad(callee, regT1, regT0);
+
+ DataLabelPtr addressOfLinkedFunctionCheck;
+
+ BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+
+ Jump jumpToSlow = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, ImmPtr(0));
+
+ END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+
+ addSlowCase(jumpToSlow);
+ ASSERT(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow) == patchOffsetOpCallCompareToJump);
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
+
+ addSlowCase(branch32(NotEqual, regT1, Imm32(JSValue::CellTag)));
+
+ // The following is the fast case, only used whan a callee can be linked.
+
+ // In the case of OpConstruct, call out to a cti_ function to create the new object.
+ if (opcodeID == op_construct) {
+ int proto = instruction[5].u.operand;
+ int thisRegister = instruction[6].u.operand;
+
+ JITStubCall stubCall(this, cti_op_construct_JSConstruct);
+ stubCall.addArgument(regT1, regT0);
+ stubCall.addArgument(Imm32(0)); // FIXME: Remove this unused JITStub argument.
+ stubCall.addArgument(Imm32(0)); // FIXME: Remove this unused JITStub argument.
+ stubCall.addArgument(proto);
+ stubCall.call(thisRegister);
+
+ emitLoad(callee, regT1, regT0);
+ }
+
+ // 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
+ emitStore(registerOffset + RegisterFile::OptionalCalleeArguments, JSValue());
+ emitStore(registerOffset + RegisterFile::Callee, regT1, regT0);
+
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_data) + OBJECT_OFFSETOF(ScopeChain, m_node)), regT1); // newScopeChain
+ store32(Imm32(argCount), Address(callFrameRegister, (registerOffset + RegisterFile::ArgumentCount) * static_cast<int>(sizeof(Register))));
+ storePtr(callFrameRegister, Address(callFrameRegister, (registerOffset + RegisterFile::CallerFrame) * static_cast<int>(sizeof(Register))));
+ storePtr(regT1, Address(callFrameRegister, (registerOffset + RegisterFile::ScopeChain) * static_cast<int>(sizeof(Register))));
+ addPtr(Imm32(registerOffset * sizeof(Register)), callFrameRegister);
+
+ // Call to the callee
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
- DataLabelPtr::patch(callLinkInfo->hotPathBegin, callee);
- Jump::patch(callLinkInfo->hotPathOther, ctiCode);
+ if (opcodeID == op_call_eval)
+ wasEval.link(this);
+
+ // Put the return value in dst. In the interpreter, op_ret does this.
+ emitStore(dst, regT1, regT0);
+ map(m_bytecodeIndex + opcodeLengths[opcodeID], dst, regT1, regT0);
+
+ sampleCodeBlock(m_codeBlock);
+}
+
+void JIT::compileOpCallSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter, unsigned callLinkInfoIndex, OpcodeID opcodeID)
+{
+ int dst = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
+ int argCount = instruction[3].u.operand;
+ int registerOffset = instruction[4].u.operand;
+
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+
+ // The arguments have been set up on the hot path for op_call_eval
+ if (opcodeID == op_call)
+ compileOpCallSetupArgs(instruction);
+ else if (opcodeID == op_construct)
+ compileOpConstructSetupArgs(instruction);
+
+ // Fast check for JS function.
+ Jump callLinkFailNotObject = branch32(NotEqual, regT1, Imm32(JSValue::CellTag));
+ Jump callLinkFailNotJSFunction = branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsFunctionVPtr));
+
+ // First, in the case of a construct, allocate the new object.
+ if (opcodeID == op_construct) {
+ JITStubCall(this, cti_op_construct_JSConstruct).call(registerOffset - RegisterFile::CallFrameHeaderSize - argCount);
+ emitLoad(callee, regT1, regT0);
}
- // patch the instruction that jumps out to the cold path, so that we only try to link once.
- void* patchCheck = reinterpret_cast<void*>(reinterpret_cast<ptrdiff_t>(callLinkInfo->hotPathBegin) + patchOffsetOpCallCompareToJump);
- Jump::patch(patchCheck, callLinkInfo->coldPathOther);
+ // Speculatively roll the callframe, assuming argCount will match the arity.
+ storePtr(callFrameRegister, Address(callFrameRegister, (RegisterFile::CallerFrame + registerOffset) * static_cast<int>(sizeof(Register))));
+ addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
+ move(Imm32(argCount), regT1);
+
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(m_globalData->jitStubs->ctiVirtualCallLink());
+
+ // Put the return value in dst.
+ emitStore(dst, regT1, regT0);;
+ sampleCodeBlock(m_codeBlock);
+
+ // If not, we need an extra case in the if below!
+ ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_call_eval));
+
+ // Done! - return back to the hot path.
+ if (opcodeID == op_construct)
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_construct));
+ else
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_call));
+
+ // This handles host functions
+ callLinkFailNotObject.link(this);
+ callLinkFailNotJSFunction.link(this);
+ JITStubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction).call();
+
+ emitStore(dst, regT1, regT0);;
+ sampleCodeBlock(m_codeBlock);
}
+/* ------------------------------ END: !ENABLE / ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+
+#endif // !ENABLE(JIT_OPTIMIZE_CALL)
+
+#else // USE(JSVALUE32_64)
+
void JIT::compileOpCallInitializeCallFrame()
{
- store32(X86::edx, Address(callFrameRegister, RegisterFile::ArgumentCount * static_cast<int>(sizeof(Register))));
+ store32(regT1, Address(callFrameRegister, RegisterFile::ArgumentCount * static_cast<int>(sizeof(Register))));
- loadPtr(Address(X86::ecx, FIELD_OFFSET(JSFunction, m_scopeChain) + FIELD_OFFSET(ScopeChain, m_node)), X86::edx); // newScopeChain
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_data) + OBJECT_OFFSETOF(ScopeChain, m_node)), regT1); // newScopeChain
- storePtr(ImmPtr(JSValuePtr::encode(noValue())), Address(callFrameRegister, RegisterFile::OptionalCalleeArguments * static_cast<int>(sizeof(Register))));
- storePtr(X86::ecx, Address(callFrameRegister, RegisterFile::Callee * static_cast<int>(sizeof(Register))));
- storePtr(X86::edx, Address(callFrameRegister, RegisterFile::ScopeChain * static_cast<int>(sizeof(Register))));
+ storePtr(ImmPtr(JSValue::encode(JSValue())), Address(callFrameRegister, RegisterFile::OptionalCalleeArguments * static_cast<int>(sizeof(Register))));
+ storePtr(regT0, Address(callFrameRegister, RegisterFile::Callee * static_cast<int>(sizeof(Register))));
+ storePtr(regT1, Address(callFrameRegister, RegisterFile::ScopeChain * static_cast<int>(sizeof(Register))));
}
void JIT::compileOpCallSetupArgs(Instruction* instruction)
int registerOffset = instruction[4].u.operand;
// ecx holds func
- emitPutJITStubArg(X86::ecx, 1);
- emitPutJITStubArgConstant(registerOffset, 2);
- emitPutJITStubArgConstant(argCount, 3);
+ emitPutJITStubArg(regT0, 0);
+ emitPutJITStubArgConstant(argCount, 2);
+ emitPutJITStubArgConstant(registerOffset, 1);
}
-
-void JIT::compileOpCallEvalSetupArgs(Instruction* instruction)
+
+void JIT::compileOpCallVarargsSetupArgs(Instruction* instruction)
{
- int argCount = instruction[3].u.operand;
int registerOffset = instruction[4].u.operand;
-
+
// ecx holds func
- emitPutJITStubArg(X86::ecx, 1);
- emitPutJITStubArgConstant(registerOffset, 2);
- emitPutJITStubArgConstant(argCount, 3);
+ emitPutJITStubArg(regT0, 0);
+ emitPutJITStubArg(regT1, 2);
+ addPtr(Imm32(registerOffset), regT1, regT2);
+ emitPutJITStubArg(regT2, 1);
}
void JIT::compileOpConstructSetupArgs(Instruction* instruction)
int thisRegister = instruction[6].u.operand;
// ecx holds func
- emitPutJITStubArg(X86::ecx, 1);
- emitPutJITStubArgConstant(registerOffset, 2);
- emitPutJITStubArgConstant(argCount, 3);
- emitPutJITStubArgFromVirtualRegister(proto, 4, X86::eax);
- emitPutJITStubArgConstant(thisRegister, 5);
+ emitPutJITStubArg(regT0, 0);
+ emitPutJITStubArgConstant(registerOffset, 1);
+ emitPutJITStubArgConstant(argCount, 2);
+ emitPutJITStubArgFromVirtualRegister(proto, 3, regT2);
+ emitPutJITStubArgConstant(thisRegister, 4);
+}
+
+void JIT::compileOpCallVarargs(Instruction* instruction)
+{
+ int dst = instruction[1].u.operand;
+ int callee = instruction[2].u.operand;
+ int argCountRegister = instruction[3].u.operand;
+
+ emitGetVirtualRegister(argCountRegister, regT1);
+ emitGetVirtualRegister(callee, regT0);
+ compileOpCallVarargsSetupArgs(instruction);
+
+ // Check for JSFunctions.
+ emitJumpSlowCaseIfNotJSCell(regT0);
+ addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsFunctionVPtr)));
+
+ // Speculatively roll the callframe, assuming argCount will match the arity.
+ mul32(Imm32(sizeof(Register)), regT2, regT2);
+ intptr_t offset = (intptr_t)sizeof(Register) * (intptr_t)RegisterFile::CallerFrame;
+ addPtr(Imm32((int32_t)offset), regT2, regT3);
+ addPtr(callFrameRegister, regT3);
+ storePtr(callFrameRegister, regT3);
+ addPtr(regT2, callFrameRegister);
+ emitNakedCall(m_globalData->jitStubs->ctiVirtualCall());
+
+ // Put the return value in dst. In the interpreter, op_ret does this.
+ emitPutVirtualRegister(dst);
+
+ sampleCodeBlock(m_codeBlock);
}
+void JIT::compileOpCallVarargsSlowCase(Instruction* instruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ int dst = instruction[1].u.operand;
+
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_call_NotJSFunction);
+ stubCall.call(dst); // In the interpreter, the callee puts the return value in dst.
+
+ sampleCodeBlock(m_codeBlock);
+}
+
#if !ENABLE(JIT_OPTIMIZE_CALL)
+/* ------------------------------ BEGIN: !ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned)
{
int dst = instruction[1].u.operand;
// Handle eval
Jump wasEval;
if (opcodeID == op_call_eval) {
- emitGetVirtualRegister(callee, X86::ecx);
- compileOpCallEvalSetupArgs(instruction);
-
- emitCTICall(Interpreter::cti_op_call_eval);
- wasEval = jnePtr(X86::eax, ImmPtr(JSValuePtr::encode(jsImpossibleValue())));
+ JITStubCall stubCall(this, cti_op_call_eval);
+ stubCall.addArgument(callee, regT0);
+ stubCall.addArgument(JIT::Imm32(registerOffset));
+ stubCall.addArgument(JIT::Imm32(argCount));
+ stubCall.call();
+ wasEval = branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(JSValue())));
}
- emitGetVirtualRegister(callee, X86::ecx);
+ emitGetVirtualRegister(callee, regT0);
// The arguments have been set up on the hot path for op_call_eval
if (opcodeID == op_call)
compileOpCallSetupArgs(instruction);
compileOpConstructSetupArgs(instruction);
// Check for JSFunctions.
- emitJumpSlowCaseIfNotJSCell(X86::ecx);
- addSlowCase(jnePtr(Address(X86::ecx), ImmPtr(m_interpreter->m_jsFunctionVptr)));
+ emitJumpSlowCaseIfNotJSCell(regT0);
+ addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsFunctionVPtr)));
// First, in the case of a construct, allocate the new object.
if (opcodeID == op_construct) {
- emitCTICall(Interpreter::cti_op_construct_JSConstruct);
- emitPutVirtualRegister(registerOffset - RegisterFile::CallFrameHeaderSize - argCount);
- emitGetVirtualRegister(callee, X86::ecx);
+ JITStubCall(this, cti_op_construct_JSConstruct).call(registerOffset - RegisterFile::CallFrameHeaderSize - argCount);
+ emitGetVirtualRegister(callee, regT0);
}
// Speculatively roll the callframe, assuming argCount will match the arity.
storePtr(callFrameRegister, Address(callFrameRegister, (RegisterFile::CallerFrame + registerOffset) * static_cast<int>(sizeof(Register))));
addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
- move(Imm32(argCount), X86::edx);
+ move(Imm32(argCount), regT1);
- emitNakedCall(m_interpreter->m_ctiVirtualCall);
+ emitNakedCall(m_globalData->jitStubs.ctiVirtualCall());
if (opcodeID == op_call_eval)
wasEval.link(this);
linkSlowCase(iter);
linkSlowCase(iter);
-
- // This handles host functions
- emitCTICall(((opcodeID == op_construct) ? Interpreter::cti_op_construct_NotJSConstruct : Interpreter::cti_op_call_NotJSFunction));
- // Put the return value in dst. In the interpreter, op_ret does this.
- emitPutVirtualRegister(dst);
+ JITStubCall stubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction);
+ stubCall.call(dst); // In the interpreter, the callee puts the return value in dst.
sampleCodeBlock(m_codeBlock);
}
-#else
+#else // !ENABLE(JIT_OPTIMIZE_CALL)
-static NO_RETURN void unreachable()
-{
- ASSERT_NOT_REACHED();
- exit(1);
-}
+/* ------------------------------ BEGIN: ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
void JIT::compileOpCall(OpcodeID opcodeID, Instruction* instruction, unsigned callLinkInfoIndex)
{
// Handle eval
Jump wasEval;
if (opcodeID == op_call_eval) {
- emitGetVirtualRegister(callee, X86::ecx);
- compileOpCallEvalSetupArgs(instruction);
-
- emitCTICall(Interpreter::cti_op_call_eval);
- wasEval = jnePtr(X86::eax, ImmPtr(JSValuePtr::encode(jsImpossibleValue())));
+ JITStubCall stubCall(this, cti_op_call_eval);
+ stubCall.addArgument(callee, regT0);
+ stubCall.addArgument(JIT::Imm32(registerOffset));
+ stubCall.addArgument(JIT::Imm32(argCount));
+ stubCall.call();
+ wasEval = branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(JSValue())));
}
// This plants a check for a cached JSFunction value, so we can plant a fast link to the callee.
// This deliberately leaves the callee in ecx, used when setting up the stack frame below
- emitGetVirtualRegister(callee, X86::ecx);
+ emitGetVirtualRegister(callee, regT0);
DataLabelPtr addressOfLinkedFunctionCheck;
- Jump jumpToSlow = jnePtrWithPatch(X86::ecx, addressOfLinkedFunctionCheck, ImmPtr(JSValuePtr::encode(jsImpossibleValue())));
+
+ BEGIN_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+
+ Jump jumpToSlow = branchPtrWithPatch(NotEqual, regT0, addressOfLinkedFunctionCheck, ImmPtr(JSValue::encode(JSValue())));
+
+ END_UNINTERRUPTED_SEQUENCE(sequenceOpCall);
+
addSlowCase(jumpToSlow);
- ASSERT(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow) == patchOffsetOpCallCompareToJump);
+ ASSERT_JIT_OFFSET(differenceBetween(addressOfLinkedFunctionCheck, jumpToSlow), patchOffsetOpCallCompareToJump);
m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathBegin = addressOfLinkedFunctionCheck;
// The following is the fast case, only used whan a callee can be linked.
int proto = instruction[5].u.operand;
int thisRegister = instruction[6].u.operand;
- emitPutJITStubArg(X86::ecx, 1);
- emitPutJITStubArgFromVirtualRegister(proto, 4, X86::eax);
- emitCTICall(Interpreter::cti_op_construct_JSConstruct);
- emitPutVirtualRegister(thisRegister);
- emitGetVirtualRegister(callee, X86::ecx);
+ emitPutJITStubArg(regT0, 0);
+ emitPutJITStubArgFromVirtualRegister(proto, 3, regT2);
+ JITStubCall stubCall(this, cti_op_construct_JSConstruct);
+ stubCall.call(thisRegister);
+ emitGetVirtualRegister(callee, regT0);
}
// 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
- storePtr(ImmPtr(JSValuePtr::encode(noValue())), Address(callFrameRegister, (registerOffset + RegisterFile::OptionalCalleeArguments) * static_cast<int>(sizeof(Register))));
- storePtr(X86::ecx, Address(callFrameRegister, (registerOffset + RegisterFile::Callee) * static_cast<int>(sizeof(Register))));
- loadPtr(Address(X86::ecx, FIELD_OFFSET(JSFunction, m_scopeChain) + FIELD_OFFSET(ScopeChain, m_node)), X86::edx); // newScopeChain
+ storePtr(ImmPtr(JSValue::encode(JSValue())), Address(callFrameRegister, (registerOffset + RegisterFile::OptionalCalleeArguments) * static_cast<int>(sizeof(Register))));
+ storePtr(regT0, Address(callFrameRegister, (registerOffset + RegisterFile::Callee) * static_cast<int>(sizeof(Register))));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_data) + OBJECT_OFFSETOF(ScopeChain, m_node)), regT1); // newScopeChain
store32(Imm32(argCount), Address(callFrameRegister, (registerOffset + RegisterFile::ArgumentCount) * static_cast<int>(sizeof(Register))));
storePtr(callFrameRegister, Address(callFrameRegister, (registerOffset + RegisterFile::CallerFrame) * static_cast<int>(sizeof(Register))));
- storePtr(X86::edx, Address(callFrameRegister, (registerOffset + RegisterFile::ScopeChain) * static_cast<int>(sizeof(Register))));
+ storePtr(regT1, Address(callFrameRegister, (registerOffset + RegisterFile::ScopeChain) * static_cast<int>(sizeof(Register))));
addPtr(Imm32(registerOffset * sizeof(Register)), callFrameRegister);
// Call to the callee
- m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall(reinterpret_cast<void*>(unreachable));
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].hotPathOther = emitNakedCall();
if (opcodeID == op_call_eval)
wasEval.link(this);
compileOpConstructSetupArgs(instruction);
// Fast check for JS function.
- Jump callLinkFailNotObject = emitJumpIfNotJSCell(X86::ecx);
- Jump callLinkFailNotJSFunction = jnePtr(Address(X86::ecx), ImmPtr(m_interpreter->m_jsFunctionVptr));
+ Jump callLinkFailNotObject = emitJumpIfNotJSCell(regT0);
+ Jump callLinkFailNotJSFunction = branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsFunctionVPtr));
// First, in the case of a construct, allocate the new object.
if (opcodeID == op_construct) {
- emitCTICall(Interpreter::cti_op_construct_JSConstruct);
- emitPutVirtualRegister(registerOffset - RegisterFile::CallFrameHeaderSize - argCount);
- emitGetVirtualRegister(callee, X86::ecx);
+ JITStubCall(this, cti_op_construct_JSConstruct).call(registerOffset - RegisterFile::CallFrameHeaderSize - argCount);
+ emitGetVirtualRegister(callee, regT0);
}
- move(Imm32(argCount), X86::edx);
-
// Speculatively roll the callframe, assuming argCount will match the arity.
storePtr(callFrameRegister, Address(callFrameRegister, (RegisterFile::CallerFrame + registerOffset) * static_cast<int>(sizeof(Register))));
addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
+ move(Imm32(argCount), regT1);
- m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation =
- emitNakedCall(m_interpreter->m_ctiVirtualCallPreLink);
+ move(regT0, regT2);
- Jump storeResultForFirstRun = jump();
+ m_callStructureStubCompilationInfo[callLinkInfoIndex].callReturnLocation = emitNakedCall(m_globalData->jitStubs->ctiVirtualCallLink());
-// FIXME: this label can be removed, since it is a fixed offset from 'callReturnLocation'.
- // This is the address for the cold path *after* the first run (which tries to link the call).
- m_callStructureStubCompilationInfo[callLinkInfoIndex].coldPathOther = MacroAssembler::Label(this);
+ // Put the return value in dst.
+ emitPutVirtualRegister(dst);
+ sampleCodeBlock(m_codeBlock);
- // The arguments have been set up on the hot path for op_call_eval
- if (opcodeID == op_call)
- compileOpCallSetupArgs(instruction);
- else if (opcodeID == op_construct)
- compileOpConstructSetupArgs(instruction);
+ // If not, we need an extra case in the if below!
+ ASSERT(OPCODE_LENGTH(op_call) == OPCODE_LENGTH(op_call_eval));
- // Check for JSFunctions.
- Jump isNotObject = emitJumpIfNotJSCell(X86::ecx);
- Jump isJSFunction = jePtr(Address(X86::ecx), ImmPtr(m_interpreter->m_jsFunctionVptr));
+ // Done! - return back to the hot path.
+ if (opcodeID == op_construct)
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_construct));
+ else
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_call));
// This handles host functions
- isNotObject.link(this);
callLinkFailNotObject.link(this);
callLinkFailNotJSFunction.link(this);
- emitCTICall(((opcodeID == op_construct) ? Interpreter::cti_op_construct_NotJSConstruct : Interpreter::cti_op_call_NotJSFunction));
- Jump wasNotJSFunction = jump();
-
- // Next, handle JSFunctions...
- isJSFunction.link(this);
-
- // First, in the case of a construct, allocate the new object.
- if (opcodeID == op_construct) {
- emitCTICall(Interpreter::cti_op_construct_JSConstruct);
- emitPutVirtualRegister(registerOffset - RegisterFile::CallFrameHeaderSize - argCount);
- emitGetVirtualRegister(callee, X86::ecx);
- }
-
- // Speculatively roll the callframe, assuming argCount will match the arity.
- storePtr(callFrameRegister, Address(callFrameRegister, (RegisterFile::CallerFrame + registerOffset) * static_cast<int>(sizeof(Register))));
- addPtr(Imm32(registerOffset * static_cast<int>(sizeof(Register))), callFrameRegister);
- move(Imm32(argCount), X86::edx);
+ JITStubCall(this, opcodeID == op_construct ? cti_op_construct_NotJSConstruct : cti_op_call_NotJSFunction).call();
- emitNakedCall(m_interpreter->m_ctiVirtualCall);
-
- // Put the return value in dst. In the interpreter, op_ret does this.
- wasNotJSFunction.link(this);
- storeResultForFirstRun.link(this);
emitPutVirtualRegister(dst);
-
sampleCodeBlock(m_codeBlock);
}
-#endif
+/* ------------------------------ END: !ENABLE / ENABLE(JIT_OPTIMIZE_CALL) ------------------------------ */
+
+#endif // !ENABLE(JIT_OPTIMIZE_CALL)
+
+#endif // USE(JSVALUE32_64)
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff