X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/4be4e30906bcb8ee30b4d189205cb70bad6707ce..ef99ff287df9046eb88937225e0554eabb00e33c:/llint/LLIntSlowPaths.cpp diff --git a/llint/LLIntSlowPaths.cpp b/llint/LLIntSlowPaths.cpp index 49284cd..6c7c131 100644 --- a/llint/LLIntSlowPaths.cpp +++ b/llint/LLIntSlowPaths.cpp @@ -1,5 +1,5 @@ /* - * Copyright (C) 2011, 2012, 2013 Apple Inc. All rights reserved. + * Copyright (C) 2011, 2012, 2013, 2014 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -25,30 +25,31 @@ #include "config.h" #include "LLIntSlowPaths.h" - -#if ENABLE(LLINT) - #include "Arguments.h" #include "ArrayConstructor.h" #include "CallFrame.h" #include "CommonSlowPaths.h" +#include "CommonSlowPathsExceptions.h" +#include "ErrorHandlingScope.h" #include "GetterSetter.h" #include "HostCallReturnValue.h" #include "Interpreter.h" #include "JIT.h" -#include "JITDriver.h" +#include "JITExceptions.h" #include "JSActivation.h" #include "JSCJSValue.h" #include "JSGlobalObjectFunctions.h" #include "JSNameScope.h" #include "JSPropertyNameIterator.h" +#include "JSStackInlines.h" #include "JSString.h" #include "JSWithScope.h" #include "LLIntCommon.h" #include "LLIntExceptions.h" #include "LowLevelInterpreter.h" #include "ObjectConstructor.h" -#include "Operations.h" +#include "JSCInlines.h" +#include "ProtoCallFrame.h" #include "StructureRareDataInlines.h" #include @@ -80,17 +81,17 @@ namespace JSC { namespace LLInt { return encodeResult(first, second); \ } while (false) -#define LLINT_END_IMPL() LLINT_RETURN_TWO(pc, exec) +#define LLINT_END_IMPL() LLINT_RETURN_TWO(pc, 0) #define LLINT_THROW(exceptionToThrow) do { \ - vm.exception = (exceptionToThrow); \ - pc = returnToThrow(exec, pc); \ + vm.throwException(exec, exceptionToThrow); \ + pc = returnToThrow(exec); \ LLINT_END_IMPL(); \ } while (false) #define LLINT_CHECK_EXCEPTION() do { \ - if (UNLIKELY(vm.exception)) { \ - pc = returnToThrow(exec, pc); \ + if (UNLIKELY(vm.exception())) { \ + pc = returnToThrow(exec); \ LLINT_END_IMPL(); \ } \ } while (false) @@ -125,7 +126,6 @@ namespace JSC { namespace LLInt { LLINT_END_IMPL(); \ } while (false) -#if ENABLE(VALUE_PROFILER) #define LLINT_RETURN_PROFILED(opcode, value) do { \ JSValue __rp_returnValue = (value); \ LLINT_CHECK_EXCEPTION(); \ @@ -139,37 +139,33 @@ namespace JSC { namespace LLInt { JSValue::encode(value); \ } while (false) -#else // ENABLE(VALUE_PROFILER) -#define LLINT_RETURN_PROFILED(opcode, value) LLINT_RETURN(value) - -#define LLINT_PROFILE_VALUE(opcode, value) do { } while (false) - -#endif // ENABLE(VALUE_PROFILER) - #define LLINT_CALL_END_IMPL(exec, callTarget) LLINT_RETURN_TWO((callTarget), (exec)) -#define LLINT_CALL_THROW(exec, pc, exceptionToThrow) do { \ +#define LLINT_CALL_THROW(exec, exceptionToThrow) do { \ ExecState* __ct_exec = (exec); \ - Instruction* __ct_pc = (pc); \ - vm.exception = (exceptionToThrow); \ - LLINT_CALL_END_IMPL(__ct_exec, callToThrow(__ct_exec, __ct_pc)); \ + vm.throwException(__ct_exec, exceptionToThrow); \ + LLINT_CALL_END_IMPL(0, callToThrow(__ct_exec)); \ } while (false) -#define LLINT_CALL_CHECK_EXCEPTION(exec, pc) do { \ +#define LLINT_CALL_CHECK_EXCEPTION(exec) do { \ ExecState* __cce_exec = (exec); \ - Instruction* __cce_pc = (pc); \ - if (UNLIKELY(vm.exception)) \ - LLINT_CALL_END_IMPL(__cce_exec, callToThrow(__cce_exec, __cce_pc)); \ + if (UNLIKELY(vm.exception())) \ + LLINT_CALL_END_IMPL(0, callToThrow(__cce_exec)); \ } while (false) -#define LLINT_CALL_RETURN(exec, pc, callTarget) do { \ +#define LLINT_CALL_RETURN(exec, callTarget) do { \ ExecState* __cr_exec = (exec); \ - Instruction* __cr_pc = (pc); \ void* __cr_callTarget = (callTarget); \ - LLINT_CALL_CHECK_EXCEPTION(__cr_exec->callerFrame(), __cr_pc); \ + LLINT_CALL_CHECK_EXCEPTION(__cr_exec); \ LLINT_CALL_END_IMPL(__cr_exec, __cr_callTarget); \ } while (false) +#define LLINT_RETURN_CALLEE_FRAME(execCallee) do { \ + ExecState* __rcf_exec = (execCallee); \ + LLINT_RETURN_TWO(pc, __rcf_exec); \ + } while (false) + + extern "C" SlowPathReturnType llint_trace_operand(ExecState* exec, Instruction* pc, int fromWhere, int operand) { LLINT_BEGIN(); @@ -220,7 +216,7 @@ static void traceFunctionPrologue(ExecState* exec, const char* comment, CodeSpec { JSFunction* callee = jsCast(exec->callee()); FunctionExecutable* executable = callee->jsExecutable(); - CodeBlock* codeBlock = &executable->generatedBytecodeFor(kind); + CodeBlock* codeBlock = executable->codeBlockFor(kind); dataLogF("%p / %p: in %s of function %p, executable %p; numVars = %u, numParameters = %u, numCalleeRegisters = %u, caller = %p.\n", codeBlock, exec, comment, callee, executable, codeBlock->m_numVars, codeBlock->numParameters(), codeBlock->m_numCalleeRegisters, @@ -253,12 +249,16 @@ LLINT_SLOW_PATH_DECL(trace_arityCheck_for_construct) LLINT_SLOW_PATH_DECL(trace) { - dataLogF("%p / %p: executing bc#%zu, %s, scope %p\n", + dataLogF("%p / %p: executing bc#%zu, %s, scope %p, pc = %p\n", exec->codeBlock(), exec, static_cast(pc - exec->codeBlock()->instructions().begin()), opcodeNames[exec->vm().interpreter->getOpcodeID(pc[0].u.opcode)], - exec->scope()); + exec->scope(), pc); + if (exec->vm().interpreter->getOpcodeID(pc[0].u.opcode) == op_enter) { + dataLogF("Frame will eventually return to %p\n", exec->returnPC().value()); + *bitwise_cast(exec->returnPC().value()); + } if (exec->vm().interpreter->getOpcodeID(pc[0].u.opcode) == op_ret) { dataLogF("Will be returning to %p\n", exec->returnPC().value()); dataLogF("The new cfr will be %p\n", exec->callerFrame()); @@ -277,6 +277,8 @@ LLINT_SLOW_PATH_DECL(special_trace) LLINT_END_IMPL(); } +enum EntryKind { Prologue, ArityCheck }; + #if ENABLE(JIT) inline bool shouldJIT(ExecState* exec) { @@ -287,61 +289,78 @@ inline bool shouldJIT(ExecState* exec) // Returns true if we should try to OSR. inline bool jitCompileAndSetHeuristics(CodeBlock* codeBlock, ExecState* exec) { + VM& vm = exec->vm(); + DeferGCForAWhile deferGC(vm.heap); // My callers don't set top callframe, so we don't want to GC here at all. + codeBlock->updateAllValueProfilePredictions(); if (!codeBlock->checkIfJITThresholdReached()) { -#if ENABLE(JIT_VERBOSE_OSR) - dataLogF(" JIT threshold should be lifted.\n"); -#endif + if (Options::verboseOSR()) + dataLogF(" JIT threshold should be lifted.\n"); return false; } - - CodeBlock::JITCompilationResult result = codeBlock->jitCompile(exec); - switch (result) { - case CodeBlock::AlreadyCompiled: -#if ENABLE(JIT_VERBOSE_OSR) - dataLogF(" Code was already compiled.\n"); -#endif + + switch (codeBlock->jitType()) { + case JITCode::BaselineJIT: { + if (Options::verboseOSR()) + dataLogF(" Code was already compiled.\n"); codeBlock->jitSoon(); return true; - case CodeBlock::CouldNotCompile: -#if ENABLE(JIT_VERBOSE_OSR) - dataLogF(" JIT compilation failed.\n"); -#endif - codeBlock->dontJITAnytimeSoon(); + } + case JITCode::InterpreterThunk: { + CompilationResult result = JIT::compile(&vm, codeBlock, JITCompilationCanFail); + switch (result) { + case CompilationFailed: + if (Options::verboseOSR()) + dataLogF(" JIT compilation failed.\n"); + codeBlock->dontJITAnytimeSoon(); + return false; + case CompilationSuccessful: + if (Options::verboseOSR()) + dataLogF(" JIT compilation successful.\n"); + codeBlock->install(); + codeBlock->jitSoon(); + return true; + default: + RELEASE_ASSERT_NOT_REACHED(); + return false; + } + } + default: + RELEASE_ASSERT_NOT_REACHED(); return false; - case CodeBlock::CompiledSuccessfully: -#if ENABLE(JIT_VERBOSE_OSR) - dataLogF(" JIT compilation successful.\n"); -#endif - codeBlock->jitSoon(); - return true; } - RELEASE_ASSERT_NOT_REACHED(); - return false; } -enum EntryKind { Prologue, ArityCheck }; static SlowPathReturnType entryOSR(ExecState* exec, Instruction*, CodeBlock* codeBlock, const char *name, EntryKind kind) { -#if ENABLE(JIT_VERBOSE_OSR) - dataLog(*codeBlock, ": Entered ", name, " with executeCounter = ", codeBlock->llintExecuteCounter(), "\n"); -#else - UNUSED_PARAM(name); -#endif + if (Options::verboseOSR()) { + dataLog( + *codeBlock, ": Entered ", name, " with executeCounter = ", + codeBlock->llintExecuteCounter(), "\n"); + } if (!shouldJIT(exec)) { codeBlock->dontJITAnytimeSoon(); - LLINT_RETURN_TWO(0, exec); + LLINT_RETURN_TWO(0, 0); } if (!jitCompileAndSetHeuristics(codeBlock, exec)) - LLINT_RETURN_TWO(0, exec); + LLINT_RETURN_TWO(0, 0); if (kind == Prologue) - LLINT_RETURN_TWO(codeBlock->getJITCode().executableAddressAtOffset(0), exec); + LLINT_RETURN_TWO(codeBlock->jitCode()->executableAddress(), 0); ASSERT(kind == ArityCheck); - LLINT_RETURN_TWO(codeBlock->getJITCodeWithArityCheck().executableAddress(), exec); + LLINT_RETURN_TWO(codeBlock->jitCode()->addressForCall( + *codeBlock->vm(), codeBlock->ownerExecutable(), MustCheckArity, + RegisterPreservationNotRequired).executableAddress(), 0); +} +#else // ENABLE(JIT) +static SlowPathReturnType entryOSR(ExecState* exec, Instruction*, CodeBlock* codeBlock, const char*, EntryKind) +{ + codeBlock->dontJITAnytimeSoon(); + LLINT_RETURN_TWO(0, exec); } +#endif // ENABLE(JIT) LLINT_SLOW_PATH_DECL(entry_osr) { @@ -350,41 +369,44 @@ LLINT_SLOW_PATH_DECL(entry_osr) LLINT_SLOW_PATH_DECL(entry_osr_function_for_call) { - return entryOSR(exec, pc, &jsCast(exec->callee())->jsExecutable()->generatedBytecodeFor(CodeForCall), "entry_osr_function_for_call", Prologue); + return entryOSR(exec, pc, jsCast(exec->callee())->jsExecutable()->codeBlockForCall(), "entry_osr_function_for_call", Prologue); } LLINT_SLOW_PATH_DECL(entry_osr_function_for_construct) { - return entryOSR(exec, pc, &jsCast(exec->callee())->jsExecutable()->generatedBytecodeFor(CodeForConstruct), "entry_osr_function_for_construct", Prologue); + return entryOSR(exec, pc, jsCast(exec->callee())->jsExecutable()->codeBlockForConstruct(), "entry_osr_function_for_construct", Prologue); } LLINT_SLOW_PATH_DECL(entry_osr_function_for_call_arityCheck) { - return entryOSR(exec, pc, &jsCast(exec->callee())->jsExecutable()->generatedBytecodeFor(CodeForCall), "entry_osr_function_for_call_arityCheck", ArityCheck); + return entryOSR(exec, pc, jsCast(exec->callee())->jsExecutable()->codeBlockForCall(), "entry_osr_function_for_call_arityCheck", ArityCheck); } LLINT_SLOW_PATH_DECL(entry_osr_function_for_construct_arityCheck) { - return entryOSR(exec, pc, &jsCast(exec->callee())->jsExecutable()->generatedBytecodeFor(CodeForConstruct), "entry_osr_function_for_construct_arityCheck", ArityCheck); + return entryOSR(exec, pc, jsCast(exec->callee())->jsExecutable()->codeBlockForConstruct(), "entry_osr_function_for_construct_arityCheck", ArityCheck); } LLINT_SLOW_PATH_DECL(loop_osr) { CodeBlock* codeBlock = exec->codeBlock(); - -#if ENABLE(JIT_VERBOSE_OSR) - dataLog(*codeBlock, ": Entered loop_osr with executeCounter = ", codeBlock->llintExecuteCounter(), "\n"); -#endif + +#if ENABLE(JIT) + if (Options::verboseOSR()) { + dataLog( + *codeBlock, ": Entered loop_osr with executeCounter = ", + codeBlock->llintExecuteCounter(), "\n"); + } if (!shouldJIT(exec)) { codeBlock->dontJITAnytimeSoon(); - LLINT_RETURN_TWO(0, exec); + LLINT_RETURN_TWO(0, 0); } if (!jitCompileAndSetHeuristics(codeBlock, exec)) - LLINT_RETURN_TWO(0, exec); + LLINT_RETURN_TWO(0, 0); - ASSERT(codeBlock->getJITType() == JITCode::BaselineJIT); + ASSERT(codeBlock->jitType() == JITCode::BaselineJIT); Vector map; codeBlock->jitCodeMap()->decode(map); @@ -392,27 +414,38 @@ LLINT_SLOW_PATH_DECL(loop_osr) ASSERT(mapping); ASSERT(mapping->m_bytecodeIndex == static_cast(pc - codeBlock->instructions().begin())); - void* jumpTarget = codeBlock->getJITCode().executableAddressAtOffset(mapping->m_machineCodeOffset); + void* jumpTarget = codeBlock->jitCode()->executableAddressAtOffset(mapping->m_machineCodeOffset); ASSERT(jumpTarget); - LLINT_RETURN_TWO(jumpTarget, exec); + LLINT_RETURN_TWO(jumpTarget, exec->topOfFrame()); +#else // ENABLE(JIT) + UNUSED_PARAM(pc); + codeBlock->dontJITAnytimeSoon(); + LLINT_RETURN_TWO(0, 0); +#endif // ENABLE(JIT) } LLINT_SLOW_PATH_DECL(replace) { CodeBlock* codeBlock = exec->codeBlock(); - -#if ENABLE(JIT_VERBOSE_OSR) - dataLog(*codeBlock, ": Entered replace with executeCounter = ", codeBlock->llintExecuteCounter(), "\n"); -#endif + +#if ENABLE(JIT) + if (Options::verboseOSR()) { + dataLog( + *codeBlock, ": Entered replace with executeCounter = ", + codeBlock->llintExecuteCounter(), "\n"); + } if (shouldJIT(exec)) jitCompileAndSetHeuristics(codeBlock, exec); else codeBlock->dontJITAnytimeSoon(); LLINT_END_IMPL(); -} +#else // ENABLE(JIT) + codeBlock->dontJITAnytimeSoon(); + LLINT_END_IMPL(); #endif // ENABLE(JIT) +} LLINT_SLOW_PATH_DECL(stack_check) { @@ -422,45 +455,41 @@ LLINT_SLOW_PATH_DECL(stack_check) dataLogF("CodeBlock = %p.\n", exec->codeBlock()); dataLogF("Num callee registers = %u.\n", exec->codeBlock()->m_numCalleeRegisters); dataLogF("Num vars = %u.\n", exec->codeBlock()->m_numVars); - dataLogF("Current end is at %p.\n", exec->vm().interpreter->stack().end()); + +#if ENABLE(LLINT_C_LOOP) + dataLogF("Current end is at %p.\n", exec->vm().jsStackLimit()); +#else + dataLogF("Current end is at %p.\n", exec->vm().stackLimit()); #endif - ASSERT(&exec->registers()[exec->codeBlock()->m_numCalleeRegisters] > exec->vm().interpreter->stack().end()); - if (UNLIKELY(!vm.interpreter->stack().grow(&exec->registers()[exec->codeBlock()->m_numCalleeRegisters]))) { - ReturnAddressPtr returnPC = exec->returnPC(); - exec = exec->callerFrame(); - vm.exception = createStackOverflowError(exec); - interpreterThrowInCaller(exec, returnPC); - pc = returnToThrowForThrownException(exec); - } - LLINT_END_IMPL(); -} -LLINT_SLOW_PATH_DECL(slow_path_call_arityCheck) -{ - LLINT_BEGIN(); - ExecState* newExec = CommonSlowPaths::arityCheckFor(exec, &vm.interpreter->stack(), CodeForCall); - if (!newExec) { - ReturnAddressPtr returnPC = exec->returnPC(); - exec = exec->callerFrame(); - vm.exception = createStackOverflowError(exec); - interpreterThrowInCaller(exec, returnPC); - LLINT_RETURN_TWO(bitwise_cast(static_cast(1)), exec); - } - LLINT_RETURN_TWO(0, newExec); -} +#endif + // This stack check is done in the prologue for a function call, and the + // CallFrame is not completely set up yet. For example, if the frame needs + // an activation object, the activation object will only be set up after + // we start executing the function. If we need to throw a StackOverflowError + // here, then we need to tell the prologue to start the stack unwinding from + // the caller frame (which is fully set up) instead. To do that, we return + // the caller's CallFrame in the second return value. + // + // If the stack check succeeds and we don't need to throw the error, then + // we'll return 0 instead. The prologue will check for a non-zero value + // when determining whether to set the callFrame or not. + + // For JIT enabled builds which uses the C stack, the stack is not growable. + // Hence, if we get here, then we know a stack overflow is imminent. So, just + // throw the StackOverflowError unconditionally. +#if !ENABLE(JIT) + ASSERT(!vm.interpreter->stack().containsAddress(exec->topOfFrame())); + if (LIKELY(vm.interpreter->stack().ensureCapacityFor(exec->topOfFrame()))) + LLINT_RETURN_TWO(pc, 0); +#endif -LLINT_SLOW_PATH_DECL(slow_path_construct_arityCheck) -{ - LLINT_BEGIN(); - ExecState* newExec = CommonSlowPaths::arityCheckFor(exec, &vm.interpreter->stack(), CodeForConstruct); - if (!newExec) { - ReturnAddressPtr returnPC = exec->returnPC(); - exec = exec->callerFrame(); - vm.exception = createStackOverflowError(exec); - interpreterThrowInCaller(exec, returnPC); - LLINT_RETURN_TWO(bitwise_cast(static_cast(1)), exec); - } - LLINT_RETURN_TWO(0, newExec); + exec = exec->callerFrame(); + vm.topCallFrame = exec; + ErrorHandlingScope errorScope(vm); + CommonSlowPaths::interpreterThrowInCaller(exec, createStackOverflowError(exec)); + pc = returnToThrowForThrownException(exec); + LLINT_RETURN_TWO(pc, exec); } LLINT_SLOW_PATH_DECL(slow_path_create_activation) @@ -474,43 +503,6 @@ LLINT_SLOW_PATH_DECL(slow_path_create_activation) LLINT_RETURN(JSValue(activation)); } -LLINT_SLOW_PATH_DECL(slow_path_create_arguments) -{ - LLINT_BEGIN(); - JSValue arguments = JSValue(Arguments::create(vm, exec)); - LLINT_CHECK_EXCEPTION(); - exec->uncheckedR(pc[1].u.operand) = arguments; - exec->uncheckedR(unmodifiedArgumentsRegister(pc[1].u.operand)) = arguments; - LLINT_END(); -} - -LLINT_SLOW_PATH_DECL(slow_path_create_this) -{ - LLINT_BEGIN(); - JSFunction* constructor = jsCast(LLINT_OP(2).jsValue().asCell()); - -#if !ASSERT_DISABLED - ConstructData constructData; - ASSERT(constructor->methodTable()->getConstructData(constructor, constructData) == ConstructTypeJS); -#endif - - size_t inlineCapacity = pc[3].u.operand; - Structure* structure = constructor->allocationProfile(exec, inlineCapacity)->structure(); - LLINT_RETURN(constructEmptyObject(exec, structure)); -} - -LLINT_SLOW_PATH_DECL(slow_path_convert_this) -{ - LLINT_BEGIN(); - JSValue v1 = LLINT_OP(1).jsValue(); - ASSERT(v1.isPrimitive()); -#if ENABLE(VALUE_PROFILER) - pc[OPCODE_LENGTH(op_convert_this) - 1].u.profile->m_buckets[0] = - JSValue::encode(v1.structureOrUndefined()); -#endif - LLINT_RETURN(v1.toThisObject(exec)); -} - LLINT_SLOW_PATH_DECL(slow_path_new_object) { LLINT_BEGIN(); @@ -520,7 +512,7 @@ LLINT_SLOW_PATH_DECL(slow_path_new_object) LLINT_SLOW_PATH_DECL(slow_path_new_array) { LLINT_BEGIN(); - LLINT_RETURN(constructArray(exec, pc[4].u.arrayAllocationProfile, bitwise_cast(&LLINT_OP(2)), pc[3].u.operand)); + LLINT_RETURN(constructArrayNegativeIndexed(exec, pc[4].u.arrayAllocationProfile, bitwise_cast(&LLINT_OP(2)), pc[3].u.operand)); } LLINT_SLOW_PATH_DECL(slow_path_new_array_with_size) @@ -541,188 +533,7 @@ LLINT_SLOW_PATH_DECL(slow_path_new_regexp) RegExp* regExp = exec->codeBlock()->regexp(pc[2].u.operand); if (!regExp->isValid()) LLINT_THROW(createSyntaxError(exec, "Invalid flag supplied to RegExp constructor.")); - LLINT_RETURN(RegExpObject::create(vm, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->regExpStructure(), regExp)); -} - -LLINT_SLOW_PATH_DECL(slow_path_not) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(!LLINT_OP_C(2).jsValue().toBoolean(exec))); -} - -LLINT_SLOW_PATH_DECL(slow_path_eq) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(JSValue::equal(exec, LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_neq) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(!JSValue::equal(exec, LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_stricteq) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(JSValue::strictEqual(exec, LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_nstricteq) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(!JSValue::strictEqual(exec, LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_less) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(jsLess(exec, LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_lesseq) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(jsLessEq(exec, LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_greater) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(jsLess(exec, LLINT_OP_C(3).jsValue(), LLINT_OP_C(2).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_greatereq) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(jsLessEq(exec, LLINT_OP_C(3).jsValue(), LLINT_OP_C(2).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_pre_inc) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsNumber(LLINT_OP(1).jsValue().toNumber(exec) + 1)); -} - -LLINT_SLOW_PATH_DECL(slow_path_pre_dec) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsNumber(LLINT_OP(1).jsValue().toNumber(exec) - 1)); -} - -LLINT_SLOW_PATH_DECL(slow_path_to_number) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsNumber(LLINT_OP_C(2).jsValue().toNumber(exec))); -} - -LLINT_SLOW_PATH_DECL(slow_path_negate) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsNumber(-LLINT_OP_C(2).jsValue().toNumber(exec))); -} - -LLINT_SLOW_PATH_DECL(slow_path_add) -{ - LLINT_BEGIN(); - JSValue v1 = LLINT_OP_C(2).jsValue(); - JSValue v2 = LLINT_OP_C(3).jsValue(); - -#if LLINT_SLOW_PATH_TRACING - dataLog("Trying to add ", v1, " to ", v2, ".\n"); -#endif - - if (v1.isString() && !v2.isObject()) - LLINT_RETURN(jsString(exec, asString(v1), v2.toString(exec))); - - if (v1.isNumber() && v2.isNumber()) - LLINT_RETURN(jsNumber(v1.asNumber() + v2.asNumber())); - - LLINT_RETURN(jsAddSlowCase(exec, v1, v2)); -} - -// The following arithmetic and bitwise operations need to be sure to run -// toNumber() on their operands in order. (A call to toNumber() is idempotent -// if an exception is already set on the ExecState.) - -LLINT_SLOW_PATH_DECL(slow_path_mul) -{ - LLINT_BEGIN(); - double a = LLINT_OP_C(2).jsValue().toNumber(exec); - double b = LLINT_OP_C(3).jsValue().toNumber(exec); - LLINT_RETURN(jsNumber(a * b)); -} - -LLINT_SLOW_PATH_DECL(slow_path_sub) -{ - LLINT_BEGIN(); - double a = LLINT_OP_C(2).jsValue().toNumber(exec); - double b = LLINT_OP_C(3).jsValue().toNumber(exec); - LLINT_RETURN(jsNumber(a - b)); -} - -LLINT_SLOW_PATH_DECL(slow_path_div) -{ - LLINT_BEGIN(); - double a = LLINT_OP_C(2).jsValue().toNumber(exec); - double b = LLINT_OP_C(3).jsValue().toNumber(exec); - LLINT_RETURN(jsNumber(a / b)); -} - -LLINT_SLOW_PATH_DECL(slow_path_mod) -{ - LLINT_BEGIN(); - double a = LLINT_OP_C(2).jsValue().toNumber(exec); - double b = LLINT_OP_C(3).jsValue().toNumber(exec); - LLINT_RETURN(jsNumber(fmod(a, b))); -} - -LLINT_SLOW_PATH_DECL(slow_path_lshift) -{ - LLINT_BEGIN(); - int32_t a = LLINT_OP_C(2).jsValue().toInt32(exec); - uint32_t b = LLINT_OP_C(3).jsValue().toUInt32(exec); - LLINT_RETURN(jsNumber(a << (b & 31))); -} - -LLINT_SLOW_PATH_DECL(slow_path_rshift) -{ - LLINT_BEGIN(); - int32_t a = LLINT_OP_C(2).jsValue().toInt32(exec); - uint32_t b = LLINT_OP_C(3).jsValue().toUInt32(exec); - LLINT_RETURN(jsNumber(a >> (b & 31))); -} - -LLINT_SLOW_PATH_DECL(slow_path_urshift) -{ - LLINT_BEGIN(); - uint32_t a = LLINT_OP_C(2).jsValue().toUInt32(exec); - uint32_t b = LLINT_OP_C(3).jsValue().toUInt32(exec); - LLINT_RETURN(jsNumber(a >> (b & 31))); -} - -LLINT_SLOW_PATH_DECL(slow_path_bitand) -{ - LLINT_BEGIN(); - int32_t a = LLINT_OP_C(2).jsValue().toInt32(exec); - int32_t b = LLINT_OP_C(3).jsValue().toInt32(exec); - LLINT_RETURN(jsNumber(a & b)); -} - -LLINT_SLOW_PATH_DECL(slow_path_bitor) -{ - LLINT_BEGIN(); - int32_t a = LLINT_OP_C(2).jsValue().toInt32(exec); - int32_t b = LLINT_OP_C(3).jsValue().toInt32(exec); - LLINT_RETURN(jsNumber(a | b)); -} - -LLINT_SLOW_PATH_DECL(slow_path_bitxor) -{ - LLINT_BEGIN(); - int32_t a = LLINT_OP_C(2).jsValue().toInt32(exec); - int32_t b = LLINT_OP_C(3).jsValue().toInt32(exec); - LLINT_RETURN(jsNumber(a ^ b)); + LLINT_RETURN(RegExpObject::create(vm, exec->lexicalGlobalObject()->regExpStructure(), regExp)); } LLINT_SLOW_PATH_DECL(slow_path_check_has_instance) @@ -739,7 +550,7 @@ LLINT_SLOW_PATH_DECL(slow_path_check_has_instance) LLINT_RETURN_WITH_PC_ADJUSTMENT(result, pc[4].u.operand); } } - LLINT_THROW(createInvalidParamError(exec, "instanceof", baseVal)); + LLINT_THROW(createInvalidParameterError(exec, "instanceof", baseVal)); } LLINT_SLOW_PATH_DECL(slow_path_instanceof) @@ -751,156 +562,11 @@ LLINT_SLOW_PATH_DECL(slow_path_instanceof) LLINT_RETURN(jsBoolean(JSObject::defaultHasInstance(exec, value, proto))); } -LLINT_SLOW_PATH_DECL(slow_path_typeof) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsTypeStringForValue(exec, LLINT_OP_C(2).jsValue())); -} - -LLINT_SLOW_PATH_DECL(slow_path_is_object) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(jsIsObjectType(exec, LLINT_OP_C(2).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_is_function) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(jsIsFunctionType(LLINT_OP_C(2).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_in) -{ - LLINT_BEGIN(); - LLINT_RETURN(jsBoolean(CommonSlowPaths::opIn(exec, LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue()))); -} - -LLINT_SLOW_PATH_DECL(slow_path_resolve) -{ - LLINT_BEGIN(); - Identifier ident = exec->codeBlock()->identifier(pc[2].u.operand); - ResolveOperations* operations = pc[3].u.resolveOperations; - JSValue result = JSScope::resolve(exec, ident, operations); - ASSERT(operations->size()); - if (operations->isEmpty()) - LLINT_RETURN_PROFILED(op_resolve, result); - - switch (operations->data()[0].m_operation) { - case ResolveOperation::GetAndReturnGlobalProperty: - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_global_property); - break; - - case ResolveOperation::GetAndReturnGlobalVar: - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_global_var); - break; - - case ResolveOperation::SkipTopScopeNode: - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_scoped_var_with_top_scope_check); - break; - - case ResolveOperation::SkipScopes: - if (operations->data()[0].m_scopesToSkip) - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_scoped_var); - else - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_scoped_var_on_top_scope); - break; - - default: - break; - } - LLINT_RETURN_PROFILED(op_resolve, result); -} - -LLINT_SLOW_PATH_DECL(slow_path_put_to_base) -{ - LLINT_BEGIN(); - PutToBaseOperation* operation = pc[4].u.putToBaseOperation; - JSScope::resolvePut(exec, LLINT_OP_C(1).jsValue(), exec->codeBlock()->identifier(pc[2].u.operand), LLINT_OP_C(3).jsValue(), operation); - switch (operation->m_kind) { - case PutToBaseOperation::VariablePut: - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_to_base_variable); - break; - - default: - break; - } - LLINT_END(); -} - -LLINT_SLOW_PATH_DECL(slow_path_resolve_base) -{ - LLINT_BEGIN(); - Identifier& ident = exec->codeBlock()->identifier(pc[2].u.operand); - ResolveOperations* operations = pc[4].u.resolveOperations; - JSValue result; - if (pc[3].u.operand) { - result = JSScope::resolveBase(exec, ident, true, operations, pc[5].u.putToBaseOperation); - if (!result) - LLINT_THROW(vm.exception); - } else - result = JSScope::resolveBase(exec, ident, false, operations, pc[5].u.putToBaseOperation); - - ASSERT(operations->size()); - if (operations->isEmpty()) { - LLINT_PROFILE_VALUE(op_resolve_base, result); - LLINT_RETURN(result); - } - - switch (operations->data()[0].m_operation) { - case ResolveOperation::ReturnGlobalObjectAsBase: - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_base_to_global); - break; - - case ResolveOperation::SkipTopScopeNode: - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_base_to_scope_with_top_scope_check); - break; - - case ResolveOperation::SkipScopes: - pc[0].u.opcode = LLInt::getOpcode(llint_op_resolve_base_to_scope); - break; - - default: - break; - } - LLINT_PROFILE_VALUE(op_resolve_base, result); - LLINT_RETURN(result); -} - -LLINT_SLOW_PATH_DECL(slow_path_resolve_with_base) -{ - LLINT_BEGIN(); - ResolveOperations* operations = pc[4].u.resolveOperations; - JSValue result = JSScope::resolveWithBase(exec, exec->codeBlock()->identifier(pc[3].u.operand), &LLINT_OP(1), operations, pc[5].u.putToBaseOperation); - LLINT_CHECK_EXCEPTION(); - LLINT_OP(2) = result; - LLINT_PROFILE_VALUE(op_resolve_with_base, result); - LLINT_END(); -} - -LLINT_SLOW_PATH_DECL(slow_path_resolve_with_this) -{ - LLINT_BEGIN(); - ResolveOperations* operations = pc[4].u.resolveOperations; - JSValue result = JSScope::resolveWithThis(exec, exec->codeBlock()->identifier(pc[3].u.operand), &LLINT_OP(1), operations); - LLINT_CHECK_EXCEPTION(); - LLINT_OP(2) = result; - LLINT_PROFILE_VALUE(op_resolve_with_this, result); - LLINT_END(); -} - -LLINT_SLOW_PATH_DECL(slow_path_init_global_const_check) -{ - LLINT_BEGIN(); - CodeBlock* codeBlock = exec->codeBlock(); - symbolTablePut(codeBlock->globalObject(), exec, codeBlock->identifier(pc[4].u.operand), LLINT_OP_C(2).jsValue(), true); - LLINT_END(); -} - LLINT_SLOW_PATH_DECL(slow_path_get_by_id) { LLINT_BEGIN(); CodeBlock* codeBlock = exec->codeBlock(); - Identifier& ident = codeBlock->identifier(pc[3].u.operand); + const Identifier& ident = codeBlock->identifier(pc[3].u.operand); JSValue baseValue = LLINT_OP_C(2).jsValue(); PropertySlot slot(baseValue); @@ -912,20 +578,23 @@ LLINT_SLOW_PATH_DECL(slow_path_get_by_id) && baseValue.isCell() && slot.isCacheable() && slot.slotBase() == baseValue - && slot.cachedPropertyType() == PropertySlot::Value) { + && slot.isCacheableValue()) { JSCell* baseCell = baseValue.asCell(); Structure* structure = baseCell->structure(); if (!structure->isUncacheableDictionary() - && !structure->typeInfo().prohibitsPropertyCaching()) { + && !structure->typeInfo().prohibitsPropertyCaching() + && !structure->typeInfo().newImpurePropertyFiresWatchpoints()) { + ConcurrentJITLocker locker(codeBlock->m_lock); + pc[4].u.structure.set( vm, codeBlock->ownerExecutable(), structure); if (isInlineOffset(slot.cachedOffset())) { - pc[0].u.opcode = LLInt::getOpcode(llint_op_get_by_id); + pc[0].u.opcode = LLInt::getOpcode(op_get_by_id); pc[5].u.operand = offsetInInlineStorage(slot.cachedOffset()) * sizeof(JSValue) + JSObject::offsetOfInlineStorage(); } else { - pc[0].u.opcode = LLInt::getOpcode(llint_op_get_by_id_out_of_line); + pc[0].u.opcode = LLInt::getOpcode(op_get_by_id_out_of_line); pc[5].u.operand = offsetInButterfly(slot.cachedOffset()) * sizeof(JSValue); } } @@ -934,17 +603,13 @@ LLINT_SLOW_PATH_DECL(slow_path_get_by_id) if (!LLINT_ALWAYS_ACCESS_SLOW && isJSArray(baseValue) && ident == exec->propertyNames().length) { - pc[0].u.opcode = LLInt::getOpcode(llint_op_get_array_length); -#if ENABLE(VALUE_PROFILER) + pc[0].u.opcode = LLInt::getOpcode(op_get_array_length); ArrayProfile* arrayProfile = codeBlock->getOrAddArrayProfile(pc - codeBlock->instructions().begin()); arrayProfile->observeStructure(baseValue.asCell()->structure()); pc[4].u.arrayProfile = arrayProfile; -#endif } -#if ENABLE(VALUE_PROFILER) pc[OPCODE_LENGTH(op_get_by_id) - 1].u.profile->m_buckets[0] = JSValue::encode(result); -#endif LLINT_END(); } @@ -952,7 +617,7 @@ LLINT_SLOW_PATH_DECL(slow_path_get_arguments_length) { LLINT_BEGIN(); CodeBlock* codeBlock = exec->codeBlock(); - Identifier& ident = codeBlock->identifier(pc[3].u.operand); + const Identifier& ident = codeBlock->identifier(pc[3].u.operand); JSValue baseValue = LLINT_OP(2).jsValue(); PropertySlot slot(baseValue); LLINT_RETURN(baseValue.get(exec, ident, slot)); @@ -962,10 +627,10 @@ LLINT_SLOW_PATH_DECL(slow_path_put_by_id) { LLINT_BEGIN(); CodeBlock* codeBlock = exec->codeBlock(); - Identifier& ident = codeBlock->identifier(pc[2].u.operand); + const Identifier& ident = codeBlock->identifier(pc[2].u.operand); JSValue baseValue = LLINT_OP_C(1).jsValue(); - PutPropertySlot slot(codeBlock->isStrictMode()); + PutPropertySlot slot(baseValue, codeBlock->isStrictMode(), codeBlock->putByIdContext()); if (pc[8].u.operand) asObject(baseValue)->putDirect(vm, ident, LLINT_OP_C(3).jsValue(), slot); else @@ -974,7 +639,7 @@ LLINT_SLOW_PATH_DECL(slow_path_put_by_id) if (!LLINT_ALWAYS_ACCESS_SLOW && baseValue.isCell() - && slot.isCacheable()) { + && slot.isCacheablePut()) { JSCell* baseCell = baseValue.asCell(); Structure* structure = baseCell->structure(); @@ -984,12 +649,14 @@ LLINT_SLOW_PATH_DECL(slow_path_put_by_id) && baseCell == slot.base()) { if (slot.type() == PutPropertySlot::NewProperty) { + GCSafeConcurrentJITLocker locker(codeBlock->m_lock, vm.heap); + if (!structure->isDictionary() && structure->previousID()->outOfLineCapacity() == structure->outOfLineCapacity()) { ASSERT(structure->previousID()->transitionWatchpointSetHasBeenInvalidated()); // This is needed because some of the methods we call // below may GC. - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_by_id); + pc[0].u.opcode = LLInt::getOpcode(op_put_by_id); if (normalizePrototypeChain(exec, baseCell) != InvalidPrototypeChain) { ASSERT(structure->previousID()->isObject()); @@ -1008,14 +675,14 @@ LLINT_SLOW_PATH_DECL(slow_path_put_by_id) if (pc[8].u.operand) { if (isInlineOffset(slot.cachedOffset())) - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_by_id_transition_direct); + pc[0].u.opcode = LLInt::getOpcode(op_put_by_id_transition_direct); else - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_by_id_transition_direct_out_of_line); + pc[0].u.opcode = LLInt::getOpcode(op_put_by_id_transition_direct_out_of_line); } else { if (isInlineOffset(slot.cachedOffset())) - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_by_id_transition_normal); + pc[0].u.opcode = LLInt::getOpcode(op_put_by_id_transition_normal); else - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_by_id_transition_normal_out_of_line); + pc[0].u.opcode = LLInt::getOpcode(op_put_by_id_transition_normal_out_of_line); } } } @@ -1023,10 +690,10 @@ LLINT_SLOW_PATH_DECL(slow_path_put_by_id) pc[4].u.structure.set( vm, codeBlock->ownerExecutable(), structure); if (isInlineOffset(slot.cachedOffset())) { - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_by_id); + pc[0].u.opcode = LLInt::getOpcode(op_put_by_id); pc[5].u.operand = offsetInInlineStorage(slot.cachedOffset()) * sizeof(JSValue) + JSObject::offsetOfInlineStorage(); } else { - pc[0].u.opcode = LLInt::getOpcode(llint_op_put_by_id_out_of_line); + pc[0].u.opcode = LLInt::getOpcode(op_put_by_id_out_of_line); pc[5].u.operand = offsetInButterfly(slot.cachedOffset()) * sizeof(JSValue); } } @@ -1051,8 +718,12 @@ LLINT_SLOW_PATH_DECL(slow_path_del_by_id) inline JSValue getByVal(ExecState* exec, JSValue baseValue, JSValue subscript) { if (LIKELY(baseValue.isCell() && subscript.isString())) { - if (JSValue result = baseValue.asCell()->fastGetOwnProperty(exec, asString(subscript)->value(exec))) - return result; + VM& vm = exec->vm(); + Structure& structure = *baseValue.asCell()->structure(vm); + if (JSCell::canUseFastGetOwnProperty(structure)) { + if (JSValue result = baseValue.asCell()->fastGetOwnProperty(vm, structure, asString(subscript)->value(exec))) + return result; + } } if (subscript.isUInt32()) { @@ -1066,7 +737,7 @@ inline JSValue getByVal(ExecState* exec, JSValue baseValue, JSValue subscript) if (isName(subscript)) return baseValue.get(exec, jsCast(subscript.asCell())->privateName()); - Identifier property(exec, subscript.toString(exec)->value(exec)); + Identifier property = subscript.toString(exec)->toIdentifier(exec); return baseValue.get(exec, property); } @@ -1084,7 +755,7 @@ LLINT_SLOW_PATH_DECL(slow_path_get_argument_by_val) arguments = Arguments::create(vm, exec); LLINT_CHECK_EXCEPTION(); LLINT_OP(2) = arguments; - exec->uncheckedR(unmodifiedArgumentsRegister(pc[2].u.operand)) = arguments; + exec->uncheckedR(unmodifiedArgumentsRegister(VirtualRegister(pc[2].u.operand)).offset()) = arguments; } LLINT_RETURN_PROFILED(op_get_argument_by_val, getByVal(exec, arguments, LLINT_OP_C(3).jsValue())); @@ -1119,18 +790,43 @@ LLINT_SLOW_PATH_DECL(slow_path_put_by_val) } if (isName(subscript)) { - PutPropertySlot slot(exec->codeBlock()->isStrictMode()); + PutPropertySlot slot(baseValue, exec->codeBlock()->isStrictMode()); baseValue.put(exec, jsCast(subscript.asCell())->privateName(), value, slot); LLINT_END(); } Identifier property(exec, subscript.toString(exec)->value(exec)); LLINT_CHECK_EXCEPTION(); - PutPropertySlot slot(exec->codeBlock()->isStrictMode()); + PutPropertySlot slot(baseValue, exec->codeBlock()->isStrictMode()); baseValue.put(exec, property, value, slot); LLINT_END(); } +LLINT_SLOW_PATH_DECL(slow_path_put_by_val_direct) +{ + LLINT_BEGIN(); + + JSValue baseValue = LLINT_OP_C(1).jsValue(); + JSValue subscript = LLINT_OP_C(2).jsValue(); + JSValue value = LLINT_OP_C(3).jsValue(); + RELEASE_ASSERT(baseValue.isObject()); + JSObject* baseObject = asObject(baseValue); + if (LIKELY(subscript.isUInt32())) { + uint32_t i = subscript.asUInt32(); + baseObject->putDirectIndex(exec, i, value); + } else if (isName(subscript)) { + PutPropertySlot slot(baseObject, exec->codeBlock()->isStrictMode()); + baseObject->putDirect(exec->vm(), jsCast(subscript.asCell())->privateName(), value, slot); + } else { + Identifier property(exec, subscript.toString(exec)->value(exec)); + if (!exec->vm().exception()) { // Don't put to an object if toString threw an exception. + PutPropertySlot slot(baseObject, exec->codeBlock()->isStrictMode()); + baseObject->putDirect(exec->vm(), property, value, slot); + } + } + LLINT_END(); +} + LLINT_SLOW_PATH_DECL(slow_path_del_by_val) { LLINT_BEGIN(); @@ -1174,7 +870,7 @@ LLINT_SLOW_PATH_DECL(slow_path_put_getter_setter) ASSERT(LLINT_OP(1).jsValue().isObject()); JSObject* baseObj = asObject(LLINT_OP(1).jsValue()); - GetterSetter* accessor = GetterSetter::create(exec); + GetterSetter* accessor = GetterSetter::create(vm); LLINT_CHECK_EXCEPTION(); JSValue getter = LLINT_OP(3).jsValue(); @@ -1264,7 +960,7 @@ LLINT_SLOW_PATH_DECL(slow_path_switch_imm) int defaultOffset = pc[2].u.operand; if (value == intValue) { CodeBlock* codeBlock = exec->codeBlock(); - pc += codeBlock->immediateSwitchJumpTable(pc[1].u.operand).offsetForValue(intValue, defaultOffset); + pc += codeBlock->switchJumpTable(pc[1].u.operand).offsetForValue(intValue, defaultOffset); } else pc += defaultOffset; LLINT_END(); @@ -1280,7 +976,7 @@ LLINT_SLOW_PATH_DECL(slow_path_switch_char) int defaultOffset = pc[2].u.operand; StringImpl* impl = string->value(exec).impl(); CodeBlock* codeBlock = exec->codeBlock(); - pc += codeBlock->characterSwitchJumpTable(pc[1].u.operand).offsetForValue((*impl)[0], defaultOffset); + pc += codeBlock->switchJumpTable(pc[1].u.operand).offsetForValue((*impl)[0], defaultOffset); LLINT_END(); } @@ -1302,13 +998,11 @@ LLINT_SLOW_PATH_DECL(slow_path_new_func) { LLINT_BEGIN(); CodeBlock* codeBlock = exec->codeBlock(); - ASSERT(codeBlock->codeType() != FunctionCode - || !codeBlock->needsFullScopeChain() - || exec->uncheckedR(codeBlock->activationRegister()).jsValue()); + ASSERT(codeBlock->codeType() != FunctionCode || !codeBlock->needsActivation() || exec->hasActivation()); #if LLINT_SLOW_PATH_TRACING dataLogF("Creating function!\n"); #endif - LLINT_RETURN(JSFunction::create(exec, codeBlock->functionDecl(pc[2].u.operand), exec->scope())); + LLINT_RETURN(JSFunction::create(vm, codeBlock->functionDecl(pc[2].u.operand), exec->scope())); } LLINT_SLOW_PATH_DECL(slow_path_new_func_exp) @@ -1316,13 +1010,15 @@ LLINT_SLOW_PATH_DECL(slow_path_new_func_exp) LLINT_BEGIN(); CodeBlock* codeBlock = exec->codeBlock(); FunctionExecutable* function = codeBlock->functionExpr(pc[2].u.operand); - JSFunction* func = JSFunction::create(exec, function, exec->scope()); + JSFunction* func = JSFunction::create(vm, function, exec->scope()); LLINT_RETURN(func); } static SlowPathReturnType handleHostCall(ExecState* execCallee, Instruction* pc, JSValue callee, CodeSpecializationKind kind) { + UNUSED_PARAM(pc); + #if LLINT_SLOW_PATH_TRACING dataLog("Performing host call.\n"); #endif @@ -1345,7 +1041,7 @@ static SlowPathReturnType handleHostCall(ExecState* execCallee, Instruction* pc, execCallee->setCallee(asObject(callee)); vm.hostCallReturnValue = JSValue::decode(callData.native.function(execCallee)); - LLINT_CALL_RETURN(execCallee, pc, LLInt::getCodePtr(getHostCallReturnValue)); + LLINT_CALL_RETURN(execCallee, LLInt::getCodePtr(getHostCallReturnValue)); } #if LLINT_SLOW_PATH_TRACING @@ -1353,7 +1049,7 @@ static SlowPathReturnType handleHostCall(ExecState* execCallee, Instruction* pc, #endif ASSERT(callType == CallTypeNone); - LLINT_CALL_THROW(exec, pc, createNotAFunctionError(exec, callee)); + LLINT_CALL_THROW(exec, createNotAFunctionError(exec, callee)); } ASSERT(kind == CodeForConstruct); @@ -1368,7 +1064,7 @@ static SlowPathReturnType handleHostCall(ExecState* execCallee, Instruction* pc, execCallee->setCallee(asObject(callee)); vm.hostCallReturnValue = JSValue::decode(constructData.native.function(execCallee)); - LLINT_CALL_RETURN(execCallee, pc, LLInt::getCodePtr(getHostCallReturnValue)); + LLINT_CALL_RETURN(execCallee, LLInt::getCodePtr(getHostCallReturnValue)); } #if LLINT_SLOW_PATH_TRACING @@ -1376,7 +1072,7 @@ static SlowPathReturnType handleHostCall(ExecState* execCallee, Instruction* pc, #endif ASSERT(constructType == ConstructTypeNone); - LLINT_CALL_THROW(exec, pc, createNotAConstructorError(exec, callee)); + LLINT_CALL_THROW(exec, createNotAConstructorError(exec, callee)); } inline SlowPathReturnType setUpCall(ExecState* execCallee, Instruction* pc, CodeSpecializationKind kind, JSValue calleeAsValue, LLIntCallLinkInfo* callLinkInfo = 0) @@ -1398,32 +1094,42 @@ inline SlowPathReturnType setUpCall(ExecState* execCallee, Instruction* pc, Code MacroAssemblerCodePtr codePtr; CodeBlock* codeBlock = 0; if (executable->isHostFunction()) - codePtr = executable->hostCodeEntryFor(kind); + codePtr = executable->entrypointFor(vm, kind, MustCheckArity, RegisterPreservationNotRequired); else { FunctionExecutable* functionExecutable = static_cast(executable); - JSObject* error = functionExecutable->compileFor(execCallee, callee->scope(), kind); + JSObject* error = functionExecutable->prepareForExecution(execCallee, callee, &scope, kind); + execCallee->setScope(scope); if (error) - LLINT_CALL_THROW(execCallee->callerFrame(), pc, error); - codeBlock = &functionExecutable->generatedBytecodeFor(kind); + LLINT_CALL_THROW(execCallee->callerFrame(), error); + codeBlock = functionExecutable->codeBlockFor(kind); ASSERT(codeBlock); + ArityCheckMode arity; if (execCallee->argumentCountIncludingThis() < static_cast(codeBlock->numParameters())) - codePtr = functionExecutable->jsCodeWithArityCheckEntryFor(kind); + arity = MustCheckArity; else - codePtr = functionExecutable->jsCodeEntryFor(kind); + arity = ArityCheckNotRequired; + codePtr = functionExecutable->entrypointFor(vm, kind, arity, RegisterPreservationNotRequired); } + ASSERT(!!codePtr); + if (!LLINT_ALWAYS_ACCESS_SLOW && callLinkInfo) { + ExecState* execCaller = execCallee->callerFrame(); + + CodeBlock* callerCodeBlock = execCaller->codeBlock(); + + ConcurrentJITLocker locker(callerCodeBlock->m_lock); + if (callLinkInfo->isOnList()) callLinkInfo->remove(); - ExecState* execCaller = execCallee->callerFrame(); - callLinkInfo->callee.set(vm, execCaller->codeBlock()->ownerExecutable(), callee); - callLinkInfo->lastSeenCallee.set(vm, execCaller->codeBlock()->ownerExecutable(), callee); + callLinkInfo->callee.set(vm, callerCodeBlock->ownerExecutable(), callee); + callLinkInfo->lastSeenCallee.set(vm, callerCodeBlock->ownerExecutable(), callee); callLinkInfo->machineCodeTarget = codePtr; if (codeBlock) - codeBlock->linkIncomingCall(callLinkInfo); + codeBlock->linkIncomingCall(execCaller, callLinkInfo); } - LLINT_CALL_RETURN(execCallee, pc, codePtr.executableAddress()); + LLINT_CALL_RETURN(execCallee, codePtr.executableAddress()); } inline SlowPathReturnType genericCall(ExecState* exec, Instruction* pc, CodeSpecializationKind kind) @@ -1434,16 +1140,16 @@ inline SlowPathReturnType genericCall(ExecState* exec, Instruction* pc, CodeSpec // - If possible, link the call's inline cache. // - Return a tuple of machine code address to call and the new call frame. - JSValue calleeAsValue = LLINT_OP_C(1).jsValue(); + JSValue calleeAsValue = LLINT_OP_C(2).jsValue(); - ExecState* execCallee = exec + pc[3].u.operand; + ExecState* execCallee = exec - pc[4].u.operand; - execCallee->setArgumentCountIncludingThis(pc[2].u.operand); + execCallee->setArgumentCountIncludingThis(pc[3].u.operand); execCallee->uncheckedR(JSStack::Callee) = calleeAsValue; execCallee->setCallerFrame(exec); - ASSERT(pc[4].u.callLinkInfo); - return setUpCall(execCallee, pc, kind, calleeAsValue, pc[4].u.callLinkInfo); + ASSERT(pc[5].u.callLinkInfo); + return setUpCall(execCallee, pc, kind, calleeAsValue, pc[5].u.callLinkInfo); } LLINT_SLOW_PATH_DECL(slow_path_call) @@ -1458,54 +1164,89 @@ LLINT_SLOW_PATH_DECL(slow_path_construct) return genericCall(exec, pc, CodeForConstruct); } -LLINT_SLOW_PATH_DECL(slow_path_call_varargs) +LLINT_SLOW_PATH_DECL(slow_path_size_frame_for_varargs) { LLINT_BEGIN(); // This needs to: // - Set up a call frame while respecting the variable arguments. + + ExecState* execCallee = sizeFrameForVarargs(exec, &vm.interpreter->stack(), + LLINT_OP_C(4).jsValue(), pc[5].u.operand, pc[6].u.operand); + LLINT_CALL_CHECK_EXCEPTION(exec); + + vm.newCallFrameReturnValue = execCallee; + + LLINT_RETURN_CALLEE_FRAME(execCallee); +} + +LLINT_SLOW_PATH_DECL(slow_path_call_varargs) +{ + LLINT_BEGIN_NO_SET_PC(); + // This needs to: // - Figure out what to call and compile it if necessary. // - Return a tuple of machine code address to call and the new call frame. - JSValue calleeAsValue = LLINT_OP_C(1).jsValue(); + JSValue calleeAsValue = LLINT_OP_C(2).jsValue(); - ExecState* execCallee = loadVarargs( - exec, &vm.interpreter->stack(), - LLINT_OP_C(2).jsValue(), LLINT_OP_C(3).jsValue(), pc[4].u.operand); - LLINT_CALL_CHECK_EXCEPTION(exec, pc); + ExecState* execCallee = vm.newCallFrameReturnValue; + + loadVarargs(exec, execCallee, LLINT_OP_C(3).jsValue(), LLINT_OP_C(4).jsValue(), pc[6].u.operand); + LLINT_CALL_CHECK_EXCEPTION(exec); execCallee->uncheckedR(JSStack::Callee) = calleeAsValue; execCallee->setCallerFrame(exec); - exec->setCurrentVPC(pc + OPCODE_LENGTH(op_call_varargs)); + exec->setCurrentVPC(pc); return setUpCall(execCallee, pc, CodeForCall, calleeAsValue); } - + +LLINT_SLOW_PATH_DECL(slow_path_construct_varargs) +{ + LLINT_BEGIN_NO_SET_PC(); + // This needs to: + // - Figure out what to call and compile it if necessary. + // - Return a tuple of machine code address to call and the new call frame. + + JSValue calleeAsValue = LLINT_OP_C(2).jsValue(); + + ExecState* execCallee = vm.newCallFrameReturnValue; + + loadVarargs(exec, execCallee, LLINT_OP_C(3).jsValue(), LLINT_OP_C(4).jsValue(), pc[6].u.operand); + LLINT_CALL_CHECK_EXCEPTION(exec); + + execCallee->uncheckedR(JSStack::Callee) = calleeAsValue; + execCallee->setCallerFrame(exec); + exec->setCurrentVPC(pc); + + return setUpCall(execCallee, pc, CodeForConstruct, calleeAsValue); +} + LLINT_SLOW_PATH_DECL(slow_path_call_eval) { LLINT_BEGIN_NO_SET_PC(); - JSValue calleeAsValue = LLINT_OP(1).jsValue(); + JSValue calleeAsValue = LLINT_OP(2).jsValue(); - ExecState* execCallee = exec + pc[3].u.operand; + ExecState* execCallee = exec - pc[4].u.operand; - execCallee->setArgumentCountIncludingThis(pc[2].u.operand); + execCallee->setArgumentCountIncludingThis(pc[3].u.operand); execCallee->setCallerFrame(exec); execCallee->uncheckedR(JSStack::Callee) = calleeAsValue; execCallee->setScope(exec->scope()); execCallee->setReturnPC(LLInt::getCodePtr(llint_generic_return_point)); execCallee->setCodeBlock(0); - exec->setCurrentVPC(pc + OPCODE_LENGTH(op_call_eval)); + exec->setCurrentVPC(pc); if (!isHostFunction(calleeAsValue, globalFuncEval)) return setUpCall(execCallee, pc, CodeForCall, calleeAsValue); vm.hostCallReturnValue = eval(execCallee); - LLINT_CALL_RETURN(execCallee, pc, LLInt::getCodePtr(getHostCallReturnValue)); + LLINT_CALL_RETURN(execCallee, LLInt::getCodePtr(getHostCallReturnValue)); } LLINT_SLOW_PATH_DECL(slow_path_tear_off_activation) { LLINT_BEGIN(); - ASSERT(exec->codeBlock()->needsFullScopeChain()); + ASSERT(exec->codeBlock()->needsActivation()); jsCast(LLINT_OP(1).jsValue())->tearOff(vm); LLINT_END(); } @@ -1514,7 +1255,7 @@ LLINT_SLOW_PATH_DECL(slow_path_tear_off_arguments) { LLINT_BEGIN(); ASSERT(exec->codeBlock()->usesArguments()); - Arguments* arguments = jsCast(exec->uncheckedR(unmodifiedArgumentsRegister(pc[1].u.operand)).jsValue()); + Arguments* arguments = jsCast(exec->uncheckedR(unmodifiedArgumentsRegister(VirtualRegister(pc[1].u.operand)).offset()).jsValue()); if (JSValue activationValue = LLINT_OP_C(2).jsValue()) arguments->didTearOffActivation(exec, jsCast(activationValue)); else @@ -1525,7 +1266,7 @@ LLINT_SLOW_PATH_DECL(slow_path_tear_off_arguments) LLINT_SLOW_PATH_DECL(slow_path_strcat) { LLINT_BEGIN(); - LLINT_RETURN(jsString(exec, &LLINT_OP(2), pc[3].u.operand)); + LLINT_RETURN(jsStringFromRegisterArray(exec, &LLINT_OP(2), pc[3].u.operand)); } LLINT_SLOW_PATH_DECL(slow_path_to_primitive) @@ -1608,15 +1349,16 @@ LLINT_SLOW_PATH_DECL(slow_path_throw_static_error) { LLINT_BEGIN(); if (pc[2].u.operand) - LLINT_THROW(createReferenceError(exec, LLINT_OP_C(1).jsValue().toString(exec)->value(exec))); + LLINT_THROW(createReferenceError(exec, errorDescriptionForValue(exec, LLINT_OP_C(1).jsValue())->value(exec))); else - LLINT_THROW(createTypeError(exec, LLINT_OP_C(1).jsValue().toString(exec)->value(exec))); + LLINT_THROW(createTypeError(exec, errorDescriptionForValue(exec, LLINT_OP_C(1).jsValue())->value(exec))); } LLINT_SLOW_PATH_DECL(slow_path_handle_watchdog_timer) { LLINT_BEGIN_NO_SET_PC(); - if (UNLIKELY(vm.watchdog.didFire(exec))) + ASSERT(vm.watchdog); + if (UNLIKELY(vm.watchdog->didFire(exec))) LLINT_THROW(createTerminatedExecutionException(&vm)); LLINT_RETURN_TWO(0, exec); } @@ -1625,11 +1367,7 @@ LLINT_SLOW_PATH_DECL(slow_path_debug) { LLINT_BEGIN(); int debugHookID = pc[1].u.operand; - int firstLine = pc[2].u.operand; - int lastLine = pc[3].u.operand; - int column = pc[4].u.operand; - - vm.interpreter->debug(exec, static_cast(debugHookID), firstLine, lastLine, column); + vm.interpreter->debug(exec, static_cast(debugHookID)); LLINT_END(); } @@ -1650,13 +1388,101 @@ LLINT_SLOW_PATH_DECL(slow_path_profile_did_call) LLINT_END(); } -LLINT_SLOW_PATH_DECL(throw_from_native_call) +LLINT_SLOW_PATH_DECL(slow_path_handle_exception) +{ + LLINT_BEGIN_NO_SET_PC(); + ASSERT(vm.exception()); + genericUnwind(&vm, exec, vm.exception()); + LLINT_END_IMPL(); +} + +LLINT_SLOW_PATH_DECL(slow_path_resolve_scope) +{ + LLINT_BEGIN(); + const Identifier& ident = exec->codeBlock()->identifier(pc[2].u.operand); + LLINT_RETURN(JSScope::resolve(exec, exec->scope(), ident)); +} + +LLINT_SLOW_PATH_DECL(slow_path_get_from_scope) +{ + LLINT_BEGIN(); + const Identifier& ident = exec->codeBlock()->identifier(pc[3].u.operand); + JSObject* scope = jsCast(LLINT_OP(2).jsValue()); + ResolveModeAndType modeAndType(pc[4].u.operand); + + PropertySlot slot(scope); + if (!scope->getPropertySlot(exec, ident, slot)) { + if (modeAndType.mode() == ThrowIfNotFound) + LLINT_RETURN(exec->vm().throwException(exec, createUndefinedVariableError(exec, ident))); + LLINT_RETURN(jsUndefined()); + } + + // Covers implicit globals. Since they don't exist until they first execute, we didn't know how to cache them at compile time. + if (slot.isCacheableValue() && slot.slotBase() == scope && scope->structure()->propertyAccessesAreCacheable()) { + if (modeAndType.type() == GlobalProperty || modeAndType.type() == GlobalPropertyWithVarInjectionChecks) { + CodeBlock* codeBlock = exec->codeBlock(); + ConcurrentJITLocker locker(codeBlock->m_lock); + pc[5].u.structure.set(exec->vm(), codeBlock->ownerExecutable(), scope->structure()); + pc[6].u.operand = slot.cachedOffset(); + } + } + + LLINT_RETURN(slot.getValue(exec, ident)); +} + +LLINT_SLOW_PATH_DECL(slow_path_put_to_scope) { LLINT_BEGIN(); - ASSERT(vm.exception); + CodeBlock* codeBlock = exec->codeBlock(); + const Identifier& ident = codeBlock->identifier(pc[2].u.operand); + JSObject* scope = jsCast(LLINT_OP(1).jsValue()); + JSValue value = LLINT_OP_C(3).jsValue(); + ResolveModeAndType modeAndType = ResolveModeAndType(pc[4].u.operand); + + if (modeAndType.mode() == ThrowIfNotFound && !scope->hasProperty(exec, ident)) + LLINT_THROW(createUndefinedVariableError(exec, ident)); + + PutPropertySlot slot(scope, codeBlock->isStrictMode()); + scope->methodTable()->put(scope, exec, ident, value, slot); + + // Covers implicit globals. Since they don't exist until they first execute, we didn't know how to cache them at compile time. + if (modeAndType.type() == GlobalProperty || modeAndType.type() == GlobalPropertyWithVarInjectionChecks) { + if (slot.isCacheablePut() && slot.base() == scope && scope->structure()->propertyAccessesAreCacheable()) { + ConcurrentJITLocker locker(codeBlock->m_lock); + pc[5].u.structure.set(exec->vm(), codeBlock->ownerExecutable(), scope->structure()); + pc[6].u.operand = slot.cachedOffset(); + } + } + LLINT_END(); } -} } // namespace JSC::LLInt +extern "C" SlowPathReturnType llint_throw_stack_overflow_error(VM* vm, ProtoCallFrame* protoFrame) +{ + ExecState* exec = vm->topCallFrame; + if (!exec) + exec = protoFrame->scope()->globalObject()->globalExec(); + throwStackOverflowError(exec); + return encodeResult(0, 0); +} -#endif // ENABLE(LLINT) +#if !ENABLE(JIT) +extern "C" SlowPathReturnType llint_stack_check_at_vm_entry(VM* vm, Register* newTopOfStack) +{ + bool success = vm->interpreter->stack().ensureCapacityFor(newTopOfStack); + return encodeResult(reinterpret_cast(success), 0); +} +#endif + +extern "C" void llint_write_barrier_slow(ExecState* exec, JSCell* cell) +{ + VM& vm = exec->vm(); + vm.heap.writeBarrier(cell); +} + +extern "C" NO_RETURN_DUE_TO_CRASH void llint_crash() +{ + CRASH(); +} + +} } // namespace JSC::LLInt