diff options
Diffstat (limited to 'src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.h')
| -rw-r--r-- | src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.h | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.h b/src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.h new file mode 100644 index 0000000..26d6732 --- /dev/null +++ b/src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.h @@ -0,0 +1,375 @@ +/* + * 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. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef Interpreter_h +#define Interpreter_h + +#include "ArgList.h" +#include "JSCell.h" +#include "JSValue.h" +#include "Opcode.h" +#include "RegisterFile.h" +#include <wtf/HashMap.h> + +namespace JSC { + + class CodeBlock; + class EvalNode; + class FunctionBodyNode; + class Instruction; + class InternalFunction; + class AssemblerBuffer; + class JSFunction; + class JSGlobalObject; + class ProgramNode; + class Register; + class ScopeChainNode; + class SamplingTool; + struct HandlerInfo; + +#if ENABLE(JIT) + +#if USE(JIT_STUB_ARGUMENT_VA_LIST) + #define STUB_ARGS void* args, ... + #define ARGS (reinterpret_cast<void**>(vl_args) - 1) +#else // JIT_STUB_ARGUMENT_REGISTER or JIT_STUB_ARGUMENT_STACK + #define STUB_ARGS void** args + #define ARGS (args) +#endif + +#if USE(JIT_STUB_ARGUMENT_REGISTER) + #if PLATFORM(X86_64) + #define JIT_STUB + #elif COMPILER(MSVC) + #define JIT_STUB __fastcall + #elif COMPILER(GCC) + #define JIT_STUB __attribute__ ((fastcall)) + #else + #error Need to support register calling convention in this compiler + #endif +#else // JIT_STUB_ARGUMENT_VA_LIST or JIT_STUB_ARGUMENT_STACK + #if COMPILER(MSVC) + #define JIT_STUB __cdecl + #else + #define JIT_STUB + #endif +#endif + +// The Mac compilers are fine with this, +#if PLATFORM(MAC) + struct VoidPtrPair { + void* first; + void* second; + }; +#define RETURN_PAIR(a,b) VoidPtrPair pair = { a, b }; return pair +#else + typedef uint64_t VoidPtrPair; + union VoidPtrPairValue { + struct { void* first; void* second; } s; + VoidPtrPair i; + }; +#define RETURN_PAIR(a,b) VoidPtrPairValue pair = {{ a, b }}; return pair.i +#endif + +#endif // ENABLE(JIT) + + enum DebugHookID { + WillExecuteProgram, + DidExecuteProgram, + DidEnterCallFrame, + DidReachBreakpoint, + WillLeaveCallFrame, + WillExecuteStatement + }; + + enum { MaxReentryDepth = 128 }; + + class Interpreter { + friend class JIT; + public: + Interpreter(); + ~Interpreter(); + + void initialize(JSGlobalData*); + + RegisterFile& registerFile() { return m_registerFile; } + + Opcode getOpcode(OpcodeID id) + { + #if HAVE(COMPUTED_GOTO) + return m_opcodeTable[id]; + #else + return id; + #endif + } + + OpcodeID getOpcodeID(Opcode opcode) + { + #if HAVE(COMPUTED_GOTO) + ASSERT(isOpcode(opcode)); + return m_opcodeIDTable.get(opcode); + #else + return opcode; + #endif + } + + bool isOpcode(Opcode); + + JSValuePtr execute(ProgramNode*, CallFrame*, ScopeChainNode*, JSObject* thisObj, JSValuePtr* exception); + JSValuePtr execute(FunctionBodyNode*, CallFrame*, JSFunction*, JSObject* thisObj, const ArgList& args, ScopeChainNode*, JSValuePtr* exception); + JSValuePtr execute(EvalNode* evalNode, CallFrame* exec, JSObject* thisObj, ScopeChainNode* scopeChain, JSValuePtr* exception); + + JSValuePtr retrieveArguments(CallFrame*, JSFunction*) const; + JSValuePtr retrieveCaller(CallFrame*, InternalFunction*) const; + void retrieveLastCaller(CallFrame*, int& lineNumber, intptr_t& sourceID, UString& sourceURL, JSValuePtr& function) const; + + void getArgumentsData(CallFrame*, JSFunction*&, ptrdiff_t& firstParameterIndex, Register*& argv, int& argc); + void setTimeoutTime(unsigned timeoutTime) { m_timeoutTime = timeoutTime; } + + void startTimeoutCheck() + { + if (!m_timeoutCheckCount) + resetTimeoutCheck(); + + ++m_timeoutCheckCount; + } + + void stopTimeoutCheck() + { + ASSERT(m_timeoutCheckCount); + --m_timeoutCheckCount; + } + + inline void initTimeout() + { + ASSERT(!m_timeoutCheckCount); + resetTimeoutCheck(); + m_timeoutTime = 0; + m_timeoutCheckCount = 0; + } + + void setSampler(SamplingTool* sampler) { m_sampler = sampler; } + SamplingTool* sampler() { return m_sampler; } + +#if ENABLE(JIT) + + static int JIT_STUB cti_timeout_check(STUB_ARGS); + static void JIT_STUB cti_register_file_check(STUB_ARGS); + + static JSObject* JIT_STUB cti_op_convert_this(STUB_ARGS); + static void JIT_STUB cti_op_end(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_add(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_pre_inc(STUB_ARGS); + static int JIT_STUB cti_op_loop_if_less(STUB_ARGS); + static int JIT_STUB cti_op_loop_if_lesseq(STUB_ARGS); + static JSObject* JIT_STUB cti_op_new_object(STUB_ARGS); + static void JIT_STUB cti_op_put_by_id(STUB_ARGS); + static void JIT_STUB cti_op_put_by_id_second(STUB_ARGS); + static void JIT_STUB cti_op_put_by_id_generic(STUB_ARGS); + static void JIT_STUB cti_op_put_by_id_fail(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_second(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_generic(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_self_fail(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_proto_list(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_proto_list_full(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_proto_fail(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_array_fail(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_id_string_fail(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_del_by_id(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_instanceof(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_mul(STUB_ARGS); + static JSObject* JIT_STUB cti_op_new_func(STUB_ARGS); + static void* JIT_STUB cti_op_call_JSFunction(STUB_ARGS); + static VoidPtrPair JIT_STUB cti_op_call_arityCheck(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_call_NotJSFunction(STUB_ARGS); + static void JIT_STUB cti_op_create_arguments(STUB_ARGS); + static void JIT_STUB cti_op_create_arguments_no_params(STUB_ARGS); + static void JIT_STUB cti_op_tear_off_activation(STUB_ARGS); + static void JIT_STUB cti_op_tear_off_arguments(STUB_ARGS); + static void JIT_STUB cti_op_profile_will_call(STUB_ARGS); + static void JIT_STUB cti_op_profile_did_call(STUB_ARGS); + static void JIT_STUB cti_op_ret_scopeChain(STUB_ARGS); + static JSObject* JIT_STUB cti_op_new_array(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_resolve(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_resolve_global(STUB_ARGS); + static JSObject* JIT_STUB cti_op_construct_JSConstruct(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_construct_NotJSConstruct(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_get_by_val(STUB_ARGS); + static VoidPtrPair JIT_STUB cti_op_resolve_func(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_sub(STUB_ARGS); + static void JIT_STUB cti_op_put_by_val(STUB_ARGS); + static void JIT_STUB cti_op_put_by_val_array(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_lesseq(STUB_ARGS); + static int JIT_STUB cti_op_loop_if_true(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_resolve_base(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_negate(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_resolve_skip(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_div(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_pre_dec(STUB_ARGS); + static int JIT_STUB cti_op_jless(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_not(STUB_ARGS); + static int JIT_STUB cti_op_jtrue(STUB_ARGS); + static VoidPtrPair JIT_STUB cti_op_post_inc(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_eq(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_lshift(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_bitand(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_rshift(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_bitnot(STUB_ARGS); + static VoidPtrPair JIT_STUB cti_op_resolve_with_base(STUB_ARGS); + static JSObject* JIT_STUB cti_op_new_func_exp(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_mod(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_less(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_neq(STUB_ARGS); + static VoidPtrPair JIT_STUB cti_op_post_dec(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_urshift(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_bitxor(STUB_ARGS); + static JSObject* JIT_STUB cti_op_new_regexp(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_bitor(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_call_eval(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_throw(STUB_ARGS); + static JSPropertyNameIterator* JIT_STUB cti_op_get_pnames(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_next_pname(STUB_ARGS); + static JSObject* JIT_STUB cti_op_push_scope(STUB_ARGS); + static void JIT_STUB cti_op_pop_scope(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_typeof(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_is_undefined(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_is_boolean(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_is_number(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_is_string(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_is_object(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_is_function(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_stricteq(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_nstricteq(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_to_jsnumber(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_in(STUB_ARGS); + static JSObject* JIT_STUB cti_op_push_new_scope(STUB_ARGS); + static void JIT_STUB cti_op_jmp_scopes(STUB_ARGS); + static void JIT_STUB cti_op_put_by_index(STUB_ARGS); + static void* JIT_STUB cti_op_switch_imm(STUB_ARGS); + static void* JIT_STUB cti_op_switch_char(STUB_ARGS); + static void* JIT_STUB cti_op_switch_string(STUB_ARGS); + static JSValueEncodedAsPointer* JIT_STUB cti_op_del_by_val(STUB_ARGS); + static void JIT_STUB cti_op_put_getter(STUB_ARGS); + static void JIT_STUB cti_op_put_setter(STUB_ARGS); + static JSObject* JIT_STUB cti_op_new_error(STUB_ARGS); + static void JIT_STUB cti_op_debug(STUB_ARGS); + + static JSValueEncodedAsPointer* JIT_STUB cti_vm_throw(STUB_ARGS); + static void* JIT_STUB cti_vm_dontLazyLinkCall(STUB_ARGS); + static void* JIT_STUB cti_vm_lazyLinkCall(STUB_ARGS); + static JSObject* JIT_STUB cti_op_push_activation(STUB_ARGS); + +#endif // ENABLE(JIT) + + // Default number of ticks before a timeout check should be done. + static const int initialTickCountThreshold = 1024; + + bool isJSArray(JSValuePtr v) { return !JSImmediate::isImmediate(v) && v->asCell()->vptr() == m_jsArrayVptr; } + bool isJSString(JSValuePtr v) { return !JSImmediate::isImmediate(v) && v->asCell()->vptr() == m_jsStringVptr; } + bool isJSByteArray(JSValuePtr v) { return !JSImmediate::isImmediate(v) && v->asCell()->vptr() == m_jsByteArrayVptr; } + + private: + enum ExecutionFlag { Normal, InitializeAndReturn }; + + NEVER_INLINE JSValuePtr callEval(CallFrame*, RegisterFile*, Register* argv, int argc, int registerOffset, JSValuePtr& exceptionValue); + JSValuePtr execute(EvalNode*, CallFrame*, JSObject* thisObject, int globalRegisterOffset, ScopeChainNode*, JSValuePtr* exception); + + NEVER_INLINE void debug(CallFrame*, DebugHookID, int firstLine, int lastLine); + + NEVER_INLINE bool resolve(CallFrame*, Instruction*, JSValuePtr& exceptionValue); + NEVER_INLINE bool resolveSkip(CallFrame*, Instruction*, JSValuePtr& exceptionValue); + NEVER_INLINE bool resolveGlobal(CallFrame*, Instruction*, JSValuePtr& exceptionValue); + NEVER_INLINE void resolveBase(CallFrame*, Instruction* vPC); + NEVER_INLINE bool resolveBaseAndProperty(CallFrame*, Instruction*, JSValuePtr& exceptionValue); + NEVER_INLINE ScopeChainNode* createExceptionScope(CallFrame*, const Instruction* vPC); + + NEVER_INLINE bool unwindCallFrame(CallFrame*&, JSValuePtr, unsigned& bytecodeOffset, CodeBlock*&); + NEVER_INLINE HandlerInfo* throwException(CallFrame*&, JSValuePtr&, unsigned bytecodeOffset, bool); + NEVER_INLINE bool resolveBaseAndFunc(CallFrame*, Instruction*, JSValuePtr& exceptionValue); + + static ALWAYS_INLINE CallFrame* slideRegisterWindowForCall(CodeBlock*, RegisterFile*, CallFrame*, size_t registerOffset, int argc); + + static CallFrame* findFunctionCallFrame(CallFrame*, InternalFunction*); + + JSValuePtr privateExecute(ExecutionFlag, RegisterFile*, CallFrame*, JSValuePtr* exception); + + void dumpCallFrame(CallFrame*); + void dumpRegisters(CallFrame*); + + bool checkTimeout(JSGlobalObject*); + void resetTimeoutCheck(); + + void tryCacheGetByID(CallFrame*, CodeBlock*, Instruction*, JSValuePtr baseValue, const Identifier& propertyName, const PropertySlot&); + void uncacheGetByID(CodeBlock*, Instruction* vPC); + void tryCachePutByID(CallFrame*, CodeBlock*, Instruction*, JSValuePtr baseValue, const PutPropertySlot&); + void uncachePutByID(CodeBlock*, Instruction* vPC); + + bool isCallBytecode(Opcode opcode) { return opcode == getOpcode(op_call) || opcode == getOpcode(op_construct) || opcode == getOpcode(op_call_eval); } + +#if ENABLE(JIT) + static void throwStackOverflowPreviousFrame(CallFrame**, JSGlobalData*, void*& returnAddress); + + void tryCTICacheGetByID(CallFrame*, CodeBlock*, void* returnAddress, JSValuePtr baseValue, const Identifier& propertyName, const PropertySlot&); + void tryCTICachePutByID(CallFrame*, CodeBlock*, void* returnAddress, JSValuePtr baseValue, const PutPropertySlot&); +#endif + + SamplingTool* m_sampler; + +#if ENABLE(JIT) + RefPtr<ExecutablePool> m_executablePool; + void* m_ctiArrayLengthTrampoline; + void* m_ctiStringLengthTrampoline; + void* m_ctiVirtualCallPreLink; + void* m_ctiVirtualCallLink; + void* m_ctiVirtualCall; +#endif + + int m_reentryDepth; + unsigned m_timeoutTime; + unsigned m_timeAtLastCheckTimeout; + unsigned m_timeExecuting; + unsigned m_timeoutCheckCount; + unsigned m_ticksUntilNextTimeoutCheck; + + RegisterFile m_registerFile; + + void* m_jsArrayVptr; + void* m_jsByteArrayVptr; + void* m_jsStringVptr; + void* m_jsFunctionVptr; + +#if HAVE(COMPUTED_GOTO) + Opcode m_opcodeTable[numOpcodeIDs]; // Maps OpcodeID => Opcode for compiling + HashMap<Opcode, OpcodeID> m_opcodeIDTable; // Maps Opcode => OpcodeID for decompiling +#endif + }; + +} // namespace JSC + +#endif // Interpreter_h |