*/
#include "config.h"
-#include "JIT.h"
-
#if ENABLE(JIT)
+#include "JIT.h"
+#include "Arguments.h"
+#include "CopiedSpaceInlineMethods.h"
+#include "Heap.h"
#include "JITInlineMethods.h"
#include "JITStubCall.h"
#include "JSArray.h"
namespace JSC {
-#if !USE(JSVALUE32_64)
-
-#define RECORD_JUMP_TARGET(targetOffset) \
- do { m_labels[m_bytecodeIndex + (targetOffset)].used(); } while (false)
+#if USE(JSVALUE64)
-void JIT::privateCompileCTIMachineTrampolines(RefPtr<ExecutablePool>* executablePool, JSGlobalData* globalData, TrampolineStructure *trampolines)
+PassRefPtr<ExecutableMemoryHandle> JIT::privateCompileCTIMachineTrampolines(JSGlobalData* globalData, TrampolineStructure *trampolines)
{
-#if ENABLE(JIT_OPTIMIZE_MOD)
- Label softModBegin = align();
- softModulo();
-#endif
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
// (2) The second function provides fast property access for string length
Label stringLengthBegin = align();
// Check eax is a string
Jump string_failureCases1 = emitJumpIfNotJSCell(regT0);
- Jump string_failureCases2 = branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr));
+ Jump string_failureCases2 = branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info));
// Checks out okay! - get the length from the Ustring.
load32(Address(regT0, OBJECT_OFFSETOF(JSString, m_length)), regT0);
- Jump string_failureCases3 = branch32(Above, regT0, Imm32(JSImmediate::maxImmediateInt));
+ Jump string_failureCases3 = branch32(LessThan, regT0, TrustedImm32(0));
// regT0 contains a 64 bit value (is positive, is zero extended) so we don't need sign extend here.
emitFastArithIntToImmNoCheck(regT0, regT0);
ret();
-#endif
// (3) Trampolines for the slow cases of op_call / op_call_eval / op_construct.
COMPILE_ASSERT(sizeof(CodeType) == 4, CodeTypeEnumMustBe32Bit);
+ JumpList callSlowCase;
+ JumpList constructSlowCase;
+
// VirtualCallLink Trampoline
- // regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
+ // regT0 holds callee; callFrame is moved and partially initialized.
Label virtualCallLinkBegin = align();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ callSlowCase.append(emitJumpIfNotJSCell(regT0));
+ callSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
- Jump isNativeFunc2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
+ // Finish canonical initialization before JS function call.
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- Jump hasCodeBlock2 = branch32(GreaterThan, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
+ // Also initialize ReturnPC for use by lazy linking and exceptions.
preserveReturnAddressAfterCall(regT3);
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
+
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
- Call callJSFunction2 = call();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- emitGetJITStubArg(2, regT1); // argCount
+ Call callLazyLinkCall = call();
restoreReturnAddressBeforeReturn(regT3);
- hasCodeBlock2.link(this);
+ jump(regT0);
- // Check argCount matches callee arity.
- Jump arityCheckOkay2 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), regT1);
- preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
- restoreArgumentReference();
- Call callArityCheck2 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(2, regT1); // argCount
- restoreReturnAddressBeforeReturn(regT3);
- arityCheckOkay2.link(this);
+ // VirtualConstructLink Trampoline
+ // regT0 holds callee; callFrame is moved and partially initialized.
+ Label virtualConstructLinkBegin = align();
+ constructSlowCase.append(emitJumpIfNotJSCell(regT0));
+ constructSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
- isNativeFunc2.link(this);
+ // Finish canonical initialization before JS function call.
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- compileOpCallInitializeCallFrame();
+ // Also initialize ReturnPC for use by lazy linking and exeptions.
preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
+
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
- Call callLazyLinkCall = call();
+ Call callLazyLinkConstruct = call();
restoreReturnAddressBeforeReturn(regT3);
jump(regT0);
// VirtualCall Trampoline
- // regT0 holds callee, regT1 holds argCount. regT2 will hold the FunctionExecutable.
+ // regT0 holds callee; regT2 will hold the FunctionExecutable.
Label virtualCallBegin = align();
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ callSlowCase.append(emitJumpIfNotJSCell(regT0));
+ callSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
- Jump isNativeFunc3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
+ // Finish canonical initialization before JS function call.
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- Jump hasCodeBlock3 = branch32(GreaterThan, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), Imm32(0));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ Jump hasCodeBlock1 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForCall)), TrustedImm32(0));
preserveReturnAddressAfterCall(regT3);
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
- Call callJSFunction1 = call();
- emitGetJITStubArg(2, regT1); // argCount
+ Call callCompileCall = call();
restoreReturnAddressBeforeReturn(regT3);
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- hasCodeBlock3.link(this);
-
- // Check argCount matches callee arity.
- Jump arityCheckOkay3 = branch32(Equal, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParameters)), regT1);
+
+ hasCodeBlock1.link(this);
+ loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForCallWithArityCheck)), regT0);
+ jump(regT0);
+
+ // VirtualConstruct Trampoline
+ // regT0 holds callee; regT2 will hold the FunctionExecutable.
+ Label virtualConstructBegin = align();
+ constructSlowCase.append(emitJumpIfNotJSCell(regT0));
+ constructSlowCase.append(emitJumpIfNotType(regT0, regT1, JSFunctionType));
+
+ // Finish canonical initialization before JS function call.
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_scopeChain)), regT1);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
+
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ Jump hasCodeBlock2 = branch32(GreaterThanOrEqual, Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_numParametersForConstruct)), TrustedImm32(0));
preserveReturnAddressAfterCall(regT3);
- emitPutJITStubArg(regT3, 1); // return address
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
restoreArgumentReference();
- Call callArityCheck1 = call();
- move(regT1, callFrameRegister);
- emitGetJITStubArg(2, regT1); // argCount
+ Call callCompileConstruct = call();
restoreReturnAddressBeforeReturn(regT3);
loadPtr(Address(regT0, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
- arityCheckOkay3.link(this);
-
- isNativeFunc3.link(this);
- compileOpCallInitializeCallFrame();
- loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCode)), regT0);
+ hasCodeBlock2.link(this);
+ loadPtr(Address(regT2, OBJECT_OFFSETOF(FunctionExecutable, m_jitCodeForConstructWithArityCheck)), regT0);
jump(regT0);
- Label nativeCallThunk = align();
- preserveReturnAddressAfterCall(regT0);
- emitPutToCallFrameHeader(regT0, RegisterFile::ReturnPC); // Push return address
-
- // Load caller frame's scope chain into this callframe so that whatever we call can
- // get to its global data.
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT1);
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT1);
- emitPutToCallFrameHeader(regT1, RegisterFile::ScopeChain);
-
+ callSlowCase.link(this);
+ // Finish canonical initialization before JS function call.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2, regT2);
+ emitPutCellToCallFrameHeader(regT2, RegisterFile::ScopeChain);
-#if CPU(X86_64)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, X86Registers::ecx);
+ // Also initialize ReturnPC and CodeBlock, like a JS function would.
+ preserveReturnAddressAfterCall(regT3);
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
+ emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
- // Allocate stack space for our arglist
- subPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
- COMPILE_ASSERT((sizeof(ArgList) & 0xf) == 0, ArgList_should_by_16byte_aligned);
-
- // Set up arguments
- subPtr(Imm32(1), X86Registers::ecx); // Don't include 'this' in argcount
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
+ restoreArgumentReference();
+ Call callCallNotJSFunction = call();
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ restoreReturnAddressBeforeReturn(regT3);
+ ret();
- // Push argcount
- storePtr(X86Registers::ecx, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_argCount)));
+ constructSlowCase.link(this);
+ // Finish canonical initialization before JS function call.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2, regT2);
+ emitPutCellToCallFrameHeader(regT2, RegisterFile::ScopeChain);
- // Calculate the start of the callframe header, and store in edx
- addPtr(Imm32(-RegisterFile::CallFrameHeaderSize * (int32_t)sizeof(Register)), callFrameRegister, X86Registers::edx);
-
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (ecx)
- mul32(Imm32(sizeof(Register)), X86Registers::ecx, X86Registers::ecx);
- subPtr(X86Registers::ecx, X86Registers::edx);
+ // Also initialize ReturnPC and CodeBlock, like a JS function would.
+ preserveReturnAddressAfterCall(regT3);
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
+ emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
- // push pointer to arguments
- storePtr(X86Registers::edx, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_args)));
-
- // ArgList is passed by reference so is stackPointerRegister
- move(stackPointerRegister, X86Registers::ecx);
-
- // edx currently points to the first argument, edx-sizeof(Register) points to 'this'
- loadPtr(Address(X86Registers::edx, -(int32_t)sizeof(Register)), X86Registers::edx);
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::esi);
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
+ restoreArgumentReference();
+ Call callConstructNotJSFunction = call();
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+ restoreReturnAddressBeforeReturn(regT3);
+ ret();
- move(callFrameRegister, X86Registers::edi);
+ // NativeCall Trampoline
+ Label nativeCallThunk = privateCompileCTINativeCall(globalData);
+ Label nativeConstructThunk = privateCompileCTINativeCall(globalData, true);
- call(Address(X86Registers::esi, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- addPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
-#elif CPU(X86)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
+ Call string_failureCases1Call = makeTailRecursiveCall(string_failureCases1);
+ Call string_failureCases2Call = makeTailRecursiveCall(string_failureCases2);
+ Call string_failureCases3Call = makeTailRecursiveCall(string_failureCases3);
- /* We have two structs that we use to describe the stackframe we set up for our
- * call to native code. NativeCallFrameStructure describes the how we set up the stack
- * in advance of the call. NativeFunctionCalleeSignature describes the callframe
- * as the native code expects it. We do this as we are using the fastcall calling
- * convention which results in the callee popping its arguments off the stack, but
- * not the rest of the callframe so we need a nice way to ensure we increment the
- * stack pointer by the right amount after the call.
- */
-#if COMPILER(MSVC) || OS(LINUX)
- struct NativeCallFrameStructure {
- // CallFrame* callFrame; // passed in EDX
- JSObject* callee;
- JSValue thisValue;
- ArgList* argPointer;
- ArgList args;
- JSValue result;
- };
- struct NativeFunctionCalleeSignature {
- JSObject* callee;
- JSValue thisValue;
- ArgList* argPointer;
- };
-#else
- struct NativeCallFrameStructure {
- // CallFrame* callFrame; // passed in ECX
- // JSObject* callee; // passed in EDX
- JSValue thisValue;
- ArgList* argPointer;
- ArgList args;
- };
- struct NativeFunctionCalleeSignature {
- JSValue thisValue;
- ArgList* argPointer;
- };
-#endif
- const int NativeCallFrameSize = (sizeof(NativeCallFrameStructure) + 15) & ~15;
- // Allocate system stack frame
- subPtr(Imm32(NativeCallFrameSize), stackPointerRegister);
+ // All trampolines constructed! copy the code, link up calls, and set the pointers on the Machine object.
+ LinkBuffer patchBuffer(*m_globalData, this, GLOBAL_THUNK_ID);
- // Set up arguments
- subPtr(Imm32(1), regT0); // Don't include 'this' in argcount
+ patchBuffer.link(string_failureCases1Call, FunctionPtr(cti_op_get_by_id_string_fail));
+ patchBuffer.link(string_failureCases2Call, FunctionPtr(cti_op_get_by_id_string_fail));
+ patchBuffer.link(string_failureCases3Call, FunctionPtr(cti_op_get_by_id_string_fail));
+ patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
+ patchBuffer.link(callLazyLinkConstruct, FunctionPtr(cti_vm_lazyLinkConstruct));
+ patchBuffer.link(callCompileCall, FunctionPtr(cti_op_call_jitCompile));
+ patchBuffer.link(callCompileConstruct, FunctionPtr(cti_op_construct_jitCompile));
+ patchBuffer.link(callCallNotJSFunction, FunctionPtr(cti_op_call_NotJSFunction));
+ patchBuffer.link(callConstructNotJSFunction, FunctionPtr(cti_op_construct_NotJSConstruct));
- // push argcount
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, args) + OBJECT_OFFSETOF(ArgList, m_argCount)));
-
- // Calculate the start of the callframe header, and store in regT1
- addPtr(Imm32(-RegisterFile::CallFrameHeaderSize * (int)sizeof(Register)), callFrameRegister, regT1);
+ CodeRef finalCode = patchBuffer.finalizeCode();
+ RefPtr<ExecutableMemoryHandle> executableMemory = finalCode.executableMemory();
+
+ trampolines->ctiVirtualCallLink = patchBuffer.trampolineAt(virtualCallLinkBegin);
+ trampolines->ctiVirtualConstructLink = patchBuffer.trampolineAt(virtualConstructLinkBegin);
+ trampolines->ctiVirtualCall = patchBuffer.trampolineAt(virtualCallBegin);
+ trampolines->ctiVirtualConstruct = patchBuffer.trampolineAt(virtualConstructBegin);
+ trampolines->ctiNativeCall = patchBuffer.trampolineAt(nativeCallThunk);
+ trampolines->ctiNativeConstruct = patchBuffer.trampolineAt(nativeConstructThunk);
+ trampolines->ctiStringLengthTrampoline = patchBuffer.trampolineAt(stringLengthBegin);
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (regT0)
- mul32(Imm32(sizeof(Register)), regT0, regT0);
- subPtr(regT0, regT1);
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, args) + OBJECT_OFFSETOF(ArgList, m_args)));
-
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, args)), stackPointerRegister, regT0);
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, argPointer)));
+ return executableMemory.release();
+}
- // regT1 currently points to the first argument, regT1 - sizeof(Register) points to 'this'
- loadPtr(Address(regT1, -(int)sizeof(Register)), regT1);
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, thisValue)));
+JIT::Label JIT::privateCompileCTINativeCall(JSGlobalData* globalData, bool isConstruct)
+{
+ int executableOffsetToFunction = isConstruct ? OBJECT_OFFSETOF(NativeExecutable, m_constructor) : OBJECT_OFFSETOF(NativeExecutable, m_function);
-#if COMPILER(MSVC) || OS(LINUX)
- // ArgList is passed by reference so is stackPointerRegister + 4 * sizeof(Register)
- addPtr(Imm32(OBJECT_OFFSETOF(NativeCallFrameStructure, result)), stackPointerRegister, X86Registers::ecx);
+ Label nativeCallThunk = align();
+
+ emitPutImmediateToCallFrameHeader(0, RegisterFile::CodeBlock);
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::eax);
- storePtr(X86Registers::eax, Address(stackPointerRegister, OBJECT_OFFSETOF(NativeCallFrameStructure, callee)));
+#if CPU(X86_64)
+ // Load caller frame's scope chain into this callframe so that whatever we call can
+ // get to its global data.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- // Plant callframe
- move(callFrameRegister, X86Registers::edx);
+ peek(regT1);
+ emitPutToCallFrameHeader(regT1, RegisterFile::ReturnPC);
- call(Address(X86Registers::eax, OBJECT_OFFSETOF(JSFunction, m_data)));
+ // Calling convention: f(edi, esi, edx, ecx, ...);
+ // Host function signature: f(ExecState*);
+ move(callFrameRegister, X86Registers::edi);
- // JSValue is a non-POD type
- loadPtr(Address(X86Registers::eax), X86Registers::eax);
-#else
- // Plant callee
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::edx);
+ subPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister); // Align stack after call.
- // Plant callframe
- move(callFrameRegister, X86Registers::ecx);
- call(Address(X86Registers::edx, OBJECT_OFFSETOF(JSFunction, m_data)));
-#endif
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, X86Registers::esi);
+ loadPtr(Address(X86Registers::esi, OBJECT_OFFSETOF(JSFunction, m_executable)), X86Registers::r9);
+ move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
+ call(Address(X86Registers::r9, executableOffsetToFunction));
- // We've put a few temporaries on the stack in addition to the actual arguments
- // so pull them off now
- addPtr(Imm32(NativeCallFrameSize - sizeof(NativeFunctionCalleeSignature)), stackPointerRegister);
+ addPtr(TrustedImm32(16 - sizeof(void*)), stackPointerRegister);
#elif CPU(ARM)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
-
- // Allocate stack space for our arglist
- COMPILE_ASSERT((sizeof(ArgList) & 0x7) == 0, ArgList_should_by_8byte_aligned);
- subPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
-
- // Set up arguments
- subPtr(Imm32(1), regT0); // Don't include 'this' in argcount
-
- // Push argcount
- storePtr(regT0, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_argCount)));
-
- // Calculate the start of the callframe header, and store in regT1
- move(callFrameRegister, regT1);
- sub32(Imm32(RegisterFile::CallFrameHeaderSize * (int32_t)sizeof(Register)), regT1);
-
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (regT1)
- mul32(Imm32(sizeof(Register)), regT0, regT0);
- subPtr(regT0, regT1);
-
- // push pointer to arguments
- storePtr(regT1, Address(stackPointerRegister, OBJECT_OFFSETOF(ArgList, m_args)));
-
- // regT1 currently points to the first argument, regT1-sizeof(Register) points to 'this'
-
-#if OS(WINCE)
- // Setup arg3:
- loadPtr(Address(regT1, -(int32_t)sizeof(Register)), ARMRegisters::r3);
-
- // Setup arg2:
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT2);
-
- // Setup arg1:
- move(callFrameRegister, regT1);
-
- // Setup arg0:
- move(stackPointerRegister, regT0);
- subPtr(Imm32(sizeof(Register)), stackPointerRegister);
- storePtr(regT0, Address(stackPointerRegister));
-
- call(Address(regT2, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- loadPtr(Address(regT0), regT0);
-
- addPtr(Imm32(sizeof(Register) + sizeof(ArgList)), stackPointerRegister);
-#else // OS(WINCE)
- // Setup arg3:
- loadPtr(Address(regT1, -(int32_t)sizeof(Register)), regT2);
-
- // Setup arg2:
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT1);
+ // Load caller frame's scope chain into this callframe so that whatever we call can
+ // get to its global data.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT2);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT2);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- // Setup arg1:
- move(callFrameRegister, regT0);
+ preserveReturnAddressAfterCall(regT3); // Callee preserved
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
- // Setup arg4: This is a plain hack
- move(stackPointerRegister, ARMRegisters::r3);
+ // Calling convention: f(r0 == regT0, r1 == regT1, ...);
+ // Host function signature: f(ExecState*);
+ move(callFrameRegister, ARMRegisters::r0);
- call(Address(regT1, OBJECT_OFFSETOF(JSFunction, m_data)));
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, ARMRegisters::r1);
+ move(regT2, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
+ loadPtr(Address(ARMRegisters::r1, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ call(Address(regT2, executableOffsetToFunction));
- addPtr(Imm32(sizeof(ArgList)), stackPointerRegister);
-#endif // OS(WINCE)
+ restoreReturnAddressBeforeReturn(regT3);
#elif CPU(MIPS)
- emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
-
- // Allocate stack space for our arglist
- COMPILE_ASSERT(!(sizeof(ArgList) & 0x7), ArgList_should_by_8byte_aligned);
- subPtr(Imm32(sizeof(ArgList) + 24), stackPointerRegister);
-
- // Set up arguments
- subPtr(Imm32(1), regT0); // Don't include 'this' in argcount
-
- // Push argcount to 24 + offset($sp)
- storePtr(regT0, Address(stackPointerRegister, 24 + OBJECT_OFFSETOF(ArgList, m_argCount)));
-
- // Calculate the start of the callframe header, and store in regT1
- move(callFrameRegister, regT1);
- sub32(Imm32(RegisterFile::CallFrameHeaderSize * (int32_t)sizeof(Register)), regT1);
-
- // Calculate start of arguments as callframe header - sizeof(Register) * argcount (regT1)
- mul32(Imm32(sizeof(Register)), regT0, regT0);
- subPtr(regT0, regT1);
-
- // push pointer to arguments to 24 + offset($sp)
- storePtr(regT1, Address(stackPointerRegister, 24 + OBJECT_OFFSETOF(ArgList, m_args)));
-
- // Setup arg3: regT1 currently points to the first argument, regT1-sizeof(Register) points to 'this'
- loadPtr(Address(regT1, -(int32_t)sizeof(Register)), MIPSRegisters::a3);
+ // Load caller frame's scope chain into this callframe so that whatever we call can
+ // get to its global data.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, regT0);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1, regT0);
+ emitPutCellToCallFrameHeader(regT1, RegisterFile::ScopeChain);
- // Setup arg2:
- emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2);
+ preserveReturnAddressAfterCall(regT3); // Callee preserved
+ emitPutToCallFrameHeader(regT3, RegisterFile::ReturnPC);
- // Setup arg1:
- move(callFrameRegister, MIPSRegisters::a1);
+ // Calling convention: f(a0, a1, a2, a3);
+ // Host function signature: f(ExecState*);
- // Setup arg4: ArgList is passed by reference. At 16($sp), store ($sp + 24)
- addPtr(Imm32(24), stackPointerRegister, regT2);
- storePtr(regT2, Address(stackPointerRegister, 16));
+ // Allocate stack space for 16 bytes (8-byte aligned)
+ // 16 bytes (unused) for 4 arguments
+ subPtr(TrustedImm32(16), stackPointerRegister);
- // Setup arg0 as 20($sp) to hold the returned structure.
- ASSERT(sizeof(JSValue) == 4);
- addPtr(Imm32(20), stackPointerRegister, MIPSRegisters::a0);
+ // Setup arg0
+ move(callFrameRegister, MIPSRegisters::a0);
// Call
- call(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_data)));
-
- // Get returned value from 0($v0) which is the same as 20($sp)
- loadPtr(Address(returnValueRegister, 0), returnValueRegister);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, MIPSRegisters::a2);
+ loadPtr(Address(MIPSRegisters::a2, OBJECT_OFFSETOF(JSFunction, m_executable)), regT2);
+ move(regT0, callFrameRegister); // Eagerly restore caller frame register to avoid loading from stack.
+ call(Address(regT2, executableOffsetToFunction));
// Restore stack space
- addPtr(Imm32(sizeof(ArgList) + 24), stackPointerRegister);
+ addPtr(TrustedImm32(16), stackPointerRegister);
+
+ restoreReturnAddressBeforeReturn(regT3);
-#elif ENABLE(JIT_OPTIMIZE_NATIVE_CALL)
-#error "JIT_OPTIMIZE_NATIVE_CALL not yet supported on this platform."
#else
+#error "JIT not supported on this platform."
+ UNUSED_PARAM(executableOffsetToFunction);
breakpoint();
#endif
loadPtr(&(globalData->exception), regT2);
Jump exceptionHandler = branchTestPtr(NonZero, regT2);
- // Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
-
- // Restore our caller's "r".
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
-
// Return.
- restoreReturnAddressBeforeReturn(regT1);
ret();
// Handle an exception
exceptionHandler.link(this);
+
// Grab the return address.
- emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
- move(ImmPtr(&globalData->exceptionLocation), regT2);
- storePtr(regT1, regT2);
- move(ImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT2);
- emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
- poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*));
- restoreReturnAddressBeforeReturn(regT2);
- ret();
-
+ preserveReturnAddressAfterCall(regT1);
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- Call string_failureCases1Call = makeTailRecursiveCall(string_failureCases1);
- Call string_failureCases2Call = makeTailRecursiveCall(string_failureCases2);
- Call string_failureCases3Call = makeTailRecursiveCall(string_failureCases3);
-#endif
+ move(TrustedImmPtr(&globalData->exceptionLocation), regT2);
+ storePtr(regT1, regT2);
+ poke(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof(void*));
- // All trampolines constructed! copy the code, link up calls, and set the pointers on the Machine object.
- LinkBuffer patchBuffer(this, m_globalData->executableAllocator.poolForSize(m_assembler.size()));
+ storePtr(callFrameRegister, &m_globalData->topCallFrame);
+ // Set the return address.
+ move(TrustedImmPtr(FunctionPtr(ctiVMThrowTrampoline).value()), regT1);
+ restoreReturnAddressBeforeReturn(regT1);
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- patchBuffer.link(string_failureCases1Call, FunctionPtr(cti_op_get_by_id_string_fail));
- patchBuffer.link(string_failureCases2Call, FunctionPtr(cti_op_get_by_id_string_fail));
- patchBuffer.link(string_failureCases3Call, FunctionPtr(cti_op_get_by_id_string_fail));
-#endif
- patchBuffer.link(callArityCheck1, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction1, FunctionPtr(cti_op_call_JSFunction));
-#if ENABLE(JIT_OPTIMIZE_CALL)
- patchBuffer.link(callArityCheck2, FunctionPtr(cti_op_call_arityCheck));
- patchBuffer.link(callJSFunction2, FunctionPtr(cti_op_call_JSFunction));
- patchBuffer.link(callLazyLinkCall, FunctionPtr(cti_vm_lazyLinkCall));
-#endif
+ ret();
- CodeRef finalCode = patchBuffer.finalizeCode();
- *executablePool = finalCode.m_executablePool;
+ return nativeCallThunk;
+}
- trampolines->ctiVirtualCallLink = trampolineAt(finalCode, virtualCallLinkBegin);
- trampolines->ctiVirtualCall = trampolineAt(finalCode, virtualCallBegin);
- trampolines->ctiNativeCallThunk = adoptRef(new NativeExecutable(JITCode(JITCode::HostFunction(trampolineAt(finalCode, nativeCallThunk)))));
-#if ENABLE(JIT_OPTIMIZE_MOD)
- trampolines->ctiSoftModulo = trampolineAt(finalCode, softModBegin);
-#endif
-#if ENABLE(JIT_OPTIMIZE_PROPERTY_ACCESS)
- trampolines->ctiStringLengthTrampoline = trampolineAt(finalCode, stringLengthBegin);
-#else
- UNUSED_PARAM(ctiStringLengthTrampoline);
-#endif
+JIT::CodeRef JIT::privateCompileCTINativeCall(JSGlobalData* globalData, NativeFunction)
+{
+ return CodeRef::createSelfManagedCodeRef(globalData->jitStubs->ctiNativeCall());
}
void JIT::emit_op_mov(Instruction* currentInstruction)
int dst = currentInstruction[1].u.operand;
int src = currentInstruction[2].u.operand;
- if (m_codeBlock->isConstantRegisterIndex(src)) {
- storePtr(ImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
- if (dst == m_lastResultBytecodeRegister)
- killLastResultRegister();
- } else if ((src == m_lastResultBytecodeRegister) || (dst == m_lastResultBytecodeRegister)) {
- // If either the src or dst is the cached register go though
- // get/put registers to make sure we track this correctly.
+ if (canBeOptimized()) {
+ // Use simpler approach, since the DFG thinks that the last result register
+ // is always set to the destination on every operation.
emitGetVirtualRegister(src, regT0);
emitPutVirtualRegister(dst);
} else {
- // Perform the copy via regT1; do not disturb any mapping in regT0.
- loadPtr(Address(callFrameRegister, src * sizeof(Register)), regT1);
- storePtr(regT1, Address(callFrameRegister, dst * sizeof(Register)));
+ if (m_codeBlock->isConstantRegisterIndex(src)) {
+ if (!getConstantOperand(src).isNumber())
+ storePtr(TrustedImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
+ else
+ storePtr(ImmPtr(JSValue::encode(getConstantOperand(src))), Address(callFrameRegister, dst * sizeof(Register)));
+ if (dst == m_lastResultBytecodeRegister)
+ killLastResultRegister();
+ } else if ((src == m_lastResultBytecodeRegister) || (dst == m_lastResultBytecodeRegister)) {
+ // If either the src or dst is the cached register go though
+ // get/put registers to make sure we track this correctly.
+ emitGetVirtualRegister(src, regT0);
+ emitPutVirtualRegister(dst);
+ } else {
+ // Perform the copy via regT1; do not disturb any mapping in regT0.
+ loadPtr(Address(callFrameRegister, src * sizeof(Register)), regT1);
+ storePtr(regT1, Address(callFrameRegister, dst * sizeof(Register)));
+ }
}
}
void JIT::emit_op_end(Instruction* currentInstruction)
{
- if (m_codeBlock->needsFullScopeChain())
- JITStubCall(this, cti_op_end).call();
ASSERT(returnValueRegister != callFrameRegister);
emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
restoreReturnAddressBeforeReturn(Address(callFrameRegister, RegisterFile::ReturnPC * static_cast<int>(sizeof(Register))));
{
unsigned target = currentInstruction[1].u.operand;
addJump(jump(), target);
- RECORD_JUMP_TARGET(target);
}
-void JIT::emit_op_loop_if_lesseq(Instruction* currentInstruction)
+void JIT::emit_op_new_object(Instruction* currentInstruction)
{
- emitTimeoutCheck();
-
- unsigned op1 = currentInstruction[1].u.operand;
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
- if (isOperandConstantImmediateInt(op2)) {
- emitGetVirtualRegister(op1, regT0);
- emitJumpSlowCaseIfNotImmediateInteger(regT0);
-#if USE(JSVALUE64)
- int32_t op2imm = getConstantOperandImmediateInt(op2);
-#else
- int32_t op2imm = static_cast<int32_t>(JSImmediate::rawValue(getConstantOperand(op2)));
-#endif
- addJump(branch32(LessThanOrEqual, regT0, Imm32(op2imm)), target);
- } else {
- emitGetVirtualRegisters(op1, regT0, op2, regT1);
- emitJumpSlowCaseIfNotImmediateInteger(regT0);
- emitJumpSlowCaseIfNotImmediateInteger(regT1);
- addJump(branch32(LessThanOrEqual, regT0, regT1), target);
- }
+ emitAllocateJSFinalObject(TrustedImmPtr(m_codeBlock->globalObject()->emptyObjectStructure()), regT0, regT1);
+
+ emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-void JIT::emit_op_new_object(Instruction* currentInstruction)
+void JIT::emitSlow_op_new_object(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ linkSlowCase(iter);
JITStubCall(this, cti_op_new_object).call(currentInstruction[1].u.operand);
}
+void JIT::emit_op_check_has_instance(Instruction* currentInstruction)
+{
+ unsigned baseVal = currentInstruction[1].u.operand;
+
+ emitGetVirtualRegister(baseVal, regT0);
+
+ // Check that baseVal is a cell.
+ emitJumpSlowCaseIfNotJSCell(regT0, baseVal);
+
+ // Check that baseVal 'ImplementsHasInstance'.
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
+ addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsHasInstance)));
+}
+
void JIT::emit_op_instanceof(Instruction* currentInstruction)
{
unsigned dst = currentInstruction[1].u.operand;
emitGetVirtualRegister(baseVal, regT0);
emitGetVirtualRegister(proto, regT1);
- // Check that baseVal & proto are cells.
+ // Check that proto are cells. baseVal must be a cell - this is checked by op_check_has_instance.
emitJumpSlowCaseIfNotJSCell(regT2, value);
- emitJumpSlowCaseIfNotJSCell(regT0, baseVal);
emitJumpSlowCaseIfNotJSCell(regT1, proto);
+ // Check that prototype is an object
+ loadPtr(Address(regT1, JSCell::structureOffset()), regT3);
+ addSlowCase(emitJumpIfNotObject(regT3));
+
+ // Fixme: this check is only needed because the JSC API allows HasInstance to be overridden; we should deprecate this.
// Check that baseVal 'ImplementsDefaultHasInstance'.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT0);
- addSlowCase(branchTest8(Zero, Address(regT0, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(ImplementsDefaultHasInstance)));
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT0);
+ addSlowCase(branchTest8(Zero, Address(regT0, Structure::typeInfoFlagsOffset()), TrustedImm32(ImplementsDefaultHasInstance)));
// Optimistically load the result true, and start looping.
// Initially, regT1 still contains proto and regT2 still contains value.
// As we loop regT2 will be updated with its prototype, recursively walking the prototype chain.
- move(ImmPtr(JSValue::encode(jsBoolean(true))), regT0);
+ move(TrustedImmPtr(JSValue::encode(jsBoolean(true))), regT0);
Label loop(this);
// Load the prototype of the object in regT2. If this is equal to regT1 - WIN!
// Otherwise, check if we've hit null - if we have then drop out of the loop, if not go again.
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype)), regT2);
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
+ loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
Jump isInstance = branchPtr(Equal, regT2, regT1);
emitJumpIfJSCell(regT2).linkTo(loop, this);
// We get here either by dropping out of the loop, or if value was not an Object. Result is false.
- move(ImmPtr(JSValue::encode(jsBoolean(false))), regT0);
+ move(TrustedImmPtr(JSValue::encode(jsBoolean(false))), regT0);
// isInstance jumps right down to here, to skip setting the result to false (it has already set true).
isInstance.link(this);
emitPutVirtualRegister(dst);
}
-void JIT::emit_op_new_func(Instruction* currentInstruction)
+void JIT::emit_op_is_undefined(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_new_func);
- stubCall.addArgument(ImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_call(Instruction* currentInstruction)
-{
- compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++);
-}
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+
+ emitGetVirtualRegister(value, regT0);
+ Jump isCell = emitJumpIfJSCell(regT0);
-void JIT::emit_op_call_eval(Instruction* currentInstruction)
-{
- compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex++);
+ comparePtr(Equal, regT0, TrustedImm32(ValueUndefined), regT0);
+ Jump done = jump();
+
+ isCell.link(this);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
+ test8(NonZero, Address(regT1, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
+
+ done.link(this);
+ emitTagAsBoolImmediate(regT0);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_load_varargs(Instruction* currentInstruction)
+void JIT::emit_op_is_boolean(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)));
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+
+ emitGetVirtualRegister(value, regT0);
+ xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ testPtr(Zero, regT0, TrustedImm32(static_cast<int32_t>(~1)), regT0);
+ emitTagAsBoolImmediate(regT0);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_call_varargs(Instruction* currentInstruction)
+void JIT::emit_op_is_number(Instruction* currentInstruction)
{
- compileOpCallVarargs(currentInstruction);
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+
+ emitGetVirtualRegister(value, regT0);
+ testPtr(NonZero, regT0, tagTypeNumberRegister, regT0);
+ emitTagAsBoolImmediate(regT0);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_construct(Instruction* currentInstruction)
+void JIT::emit_op_is_string(Instruction* currentInstruction)
{
- compileOpCall(op_construct, currentInstruction, m_callLinkInfoIndex++);
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned value = currentInstruction[2].u.operand;
+
+ emitGetVirtualRegister(value, regT0);
+ Jump isNotCell = emitJumpIfNotJSCell(regT0);
+
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT1);
+ compare8(Equal, Address(regT1, Structure::typeInfoTypeOffset()), TrustedImm32(StringType), regT0);
+ emitTagAsBoolImmediate(regT0);
+ Jump done = jump();
+
+ isNotCell.link(this);
+ move(TrustedImm32(ValueFalse), regT0);
+
+ done.link(this);
+ emitPutVirtualRegister(dst);
}
-void JIT::emit_op_get_global_var(Instruction* currentInstruction)
+void JIT::emit_op_call(Instruction* currentInstruction)
{
- JSVariableObject* globalObject = static_cast<JSVariableObject*>(currentInstruction[2].u.jsCell);
- move(ImmPtr(globalObject), regT0);
- emitGetVariableObjectRegister(regT0, currentInstruction[3].u.operand, regT0);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
+ compileOpCall(op_call, currentInstruction, m_callLinkInfoIndex++);
}
-void JIT::emit_op_put_global_var(Instruction* currentInstruction)
+void JIT::emit_op_call_eval(Instruction* currentInstruction)
{
- emitGetVirtualRegister(currentInstruction[3].u.operand, regT1);
- JSVariableObject* globalObject = static_cast<JSVariableObject*>(currentInstruction[1].u.jsCell);
- move(ImmPtr(globalObject), regT0);
- emitPutVariableObjectRegister(regT1, regT0, currentInstruction[2].u.operand);
+ compileOpCall(op_call_eval, currentInstruction, m_callLinkInfoIndex);
}
-void JIT::emit_op_get_scoped_var(Instruction* currentInstruction)
+void JIT::emit_op_call_varargs(Instruction* currentInstruction)
{
- int skip = currentInstruction[3].u.operand + m_codeBlock->needsFullScopeChain();
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT0);
- while (skip--)
- loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
-
- loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT0);
- emitGetVariableObjectRegister(regT0, currentInstruction[2].u.operand, regT0);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
+ compileOpCall(op_call_varargs, currentInstruction, m_callLinkInfoIndex++);
}
-void JIT::emit_op_put_scoped_var(Instruction* currentInstruction)
+void JIT::emit_op_construct(Instruction* currentInstruction)
{
- int skip = currentInstruction[2].u.operand + m_codeBlock->needsFullScopeChain();
-
- emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT1);
- emitGetVirtualRegister(currentInstruction[3].u.operand, regT0);
- while (skip--)
- loadPtr(Address(regT1, OBJECT_OFFSETOF(ScopeChainNode, next)), regT1);
-
- loadPtr(Address(regT1, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
- emitPutVariableObjectRegister(regT0, regT1, currentInstruction[1].u.operand);
+ compileOpCall(op_construct, currentInstruction, m_callLinkInfoIndex++);
}
void JIT::emit_op_tear_off_activation(Instruction* currentInstruction)
{
+ unsigned activation = currentInstruction[1].u.operand;
+ unsigned arguments = currentInstruction[2].u.operand;
+ Jump activationCreated = branchTestPtr(NonZero, addressFor(activation));
+ Jump argumentsNotCreated = branchTestPtr(Zero, addressFor(arguments));
+ activationCreated.link(this);
JITStubCall stubCall(this, cti_op_tear_off_activation);
- stubCall.addArgument(currentInstruction[1].u.operand, regT2);
+ stubCall.addArgument(activation, regT2);
+ stubCall.addArgument(unmodifiedArgumentsRegister(arguments), regT2);
stubCall.call();
+ argumentsNotCreated.link(this);
}
-void JIT::emit_op_tear_off_arguments(Instruction*)
+void JIT::emit_op_tear_off_arguments(Instruction* currentInstruction)
{
- JITStubCall(this, cti_op_tear_off_arguments).call();
+ unsigned dst = currentInstruction[1].u.operand;
+
+ Jump argsNotCreated = branchTestPtr(Zero, Address(callFrameRegister, sizeof(Register) * (unmodifiedArgumentsRegister(dst))));
+ JITStubCall stubCall(this, cti_op_tear_off_arguments);
+ stubCall.addArgument(unmodifiedArgumentsRegister(dst), regT2);
+ stubCall.call();
+ argsNotCreated.link(this);
}
void JIT::emit_op_ret(Instruction* currentInstruction)
{
- // 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();
-
+ emitOptimizationCheck(RetOptimizationCheck);
+
ASSERT(callFrameRegister != regT1);
ASSERT(regT1 != returnValueRegister);
ASSERT(returnValueRegister != callFrameRegister);
ret();
}
-void JIT::emit_op_new_array(Instruction* currentInstruction)
+void JIT::emit_op_ret_object_or_this(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_new_array);
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
- stubCall.call(currentInstruction[1].u.operand);
+ emitOptimizationCheck(RetOptimizationCheck);
+
+ ASSERT(callFrameRegister != regT1);
+ ASSERT(regT1 != returnValueRegister);
+ ASSERT(returnValueRegister != callFrameRegister);
+
+ // Return the result in %eax.
+ emitGetVirtualRegister(currentInstruction[1].u.operand, returnValueRegister);
+ Jump notJSCell = emitJumpIfNotJSCell(returnValueRegister);
+ loadPtr(Address(returnValueRegister, JSCell::structureOffset()), regT2);
+ Jump notObject = emitJumpIfNotObject(regT2);
+
+ // Grab the return address.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+
+ // Restore our caller's "r".
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ // Return.
+ restoreReturnAddressBeforeReturn(regT1);
+ ret();
+
+ // Return 'this' in %eax.
+ notJSCell.link(this);
+ notObject.link(this);
+ emitGetVirtualRegister(currentInstruction[2].u.operand, returnValueRegister);
+
+ // Grab the return address.
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ReturnPC, regT1);
+
+ // Restore our caller's "r".
+ emitGetFromCallFrameHeaderPtr(RegisterFile::CallerFrame, callFrameRegister);
+
+ // Return.
+ restoreReturnAddressBeforeReturn(regT1);
+ ret();
}
void JIT::emit_op_resolve(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
-}
-
-void JIT::emit_op_construct_verify(Instruction* currentInstruction)
-{
- emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
-
- emitJumpSlowCaseIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addSlowCase(branch8(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)));
-
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
}
void JIT::emit_op_to_primitive(Instruction* currentInstruction)
emitGetVirtualRegister(src, regT0);
Jump isImm = emitJumpIfNotJSCell(regT0);
- addSlowCase(branchPtr(NotEqual, Address(regT0), ImmPtr(m_globalData->jsStringVPtr)));
+ addSlowCase(branchPtr(NotEqual, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
isImm.link(this);
if (dst != src)
void JIT::emit_op_strcat(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_strcat);
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_base(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_resolve_base);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ JITStubCall stubCall(this, currentInstruction[3].u.operand ? cti_op_resolve_base_strict_put : cti_op_resolve_base);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_ensure_property_exists(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_ensure_property_exists);
+ stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_skip(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve_skip);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand + m_codeBlock->needsFullScopeChain()));
- stubCall.call(currentInstruction[1].u.operand);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.callWithValueProfiling(currentInstruction[1].u.operand);
}
void JIT::emit_op_resolve_global(Instruction* currentInstruction, bool)
{
// Fast case
- void* globalObject = currentInstruction[2].u.jsCell;
+ void* globalObject = m_codeBlock->globalObject();
unsigned currentIndex = m_globalResolveInfoIndex++;
- void* structureAddress = &(m_codeBlock->globalResolveInfo(currentIndex).structure);
- void* offsetAddr = &(m_codeBlock->globalResolveInfo(currentIndex).offset);
+ GlobalResolveInfo* resolveInfoAddress = &(m_codeBlock->globalResolveInfo(currentIndex));
// Check Structure of global object
- move(ImmPtr(globalObject), regT0);
- loadPtr(structureAddress, regT1);
- addSlowCase(branchPtr(NotEqual, regT1, Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)))); // Structures don't match
+ move(TrustedImmPtr(globalObject), regT0);
+ move(TrustedImmPtr(resolveInfoAddress), regT2);
+ loadPtr(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, structure)), regT1);
+ addSlowCase(branchPtr(NotEqual, regT1, Address(regT0, JSCell::structureOffset()))); // Structures don't match
// Load cached property
// Assume that the global object always uses external storage.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_externalStorage)), regT0);
- load32(offsetAddr, regT1);
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(JSGlobalObject, m_propertyStorage)), regT0);
+ load32(Address(regT2, OBJECT_OFFSETOF(GlobalResolveInfo, offset)), regT1);
loadPtr(BaseIndex(regT0, regT1, ScalePtr), regT0);
+ emitValueProfilingSite();
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_resolve_global(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
- void* globalObject = currentInstruction[2].u.jsCell;
- Identifier* ident = &m_codeBlock->identifier(currentInstruction[3].u.operand);
+ Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
unsigned currentIndex = m_globalResolveInfoIndex++;
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_resolve_global);
- stubCall.addArgument(ImmPtr(globalObject));
- stubCall.addArgument(ImmPtr(ident));
- stubCall.addArgument(Imm32(currentIndex));
- stubCall.call(dst);
+ stubCall.addArgument(TrustedImmPtr(ident));
+ stubCall.addArgument(TrustedImm32(currentIndex));
+ stubCall.addArgument(regT0);
+ stubCall.callWithValueProfiling(dst);
}
void JIT::emit_op_not(Instruction* currentInstruction)
{
emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
- xorPtr(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool)), regT0);
- addSlowCase(branchTestPtr(NonZero, regT0, Imm32(static_cast<int32_t>(~JSImmediate::ExtendedPayloadBitBoolValue))));
- xorPtr(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool | JSImmediate::ExtendedPayloadBitBoolValue)), regT0);
+
+ // Invert against JSValue(false); if the value was tagged as a boolean, then all bits will be
+ // clear other than the low bit (which will be 0 or 1 for false or true inputs respectively).
+ // Then invert against JSValue(true), which will add the tag back in, and flip the low bit.
+ xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
+ addSlowCase(branchTestPtr(NonZero, regT0, TrustedImm32(static_cast<int32_t>(~1))));
+ xorPtr(TrustedImm32(static_cast<int32_t>(ValueTrue)), regT0);
+
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNumber(m_globalData, 0)))), target);
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNumber(0)))), target);
Jump isNonZero = emitJumpIfImmediateInteger(regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsBoolean(false)))), target);
- addSlowCase(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsBoolean(true)))));
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(false)))), target);
+ addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(true)))));
isNonZero.link(this);
- RECORD_JUMP_TARGET(target);
}
void JIT::emit_op_jeq_null(Instruction* currentInstruction)
Jump isImmediate = emitJumpIfNotJSCell(regT0);
// First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addJump(branchTest8(NonZero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined)), target);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ addJump(branchTest8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
Jump wasNotImmediate = jump();
// Now handle the immediate cases - undefined & null
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNull()))), target);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
- RECORD_JUMP_TARGET(target);
};
void JIT::emit_op_jneq_null(Instruction* currentInstruction)
{
Jump isImmediate = emitJumpIfNotJSCell(regT0);
// First, handle JSCell cases - check MasqueradesAsUndefined bit on the structure.
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addJump(branchTest8(Zero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined)), target);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ addJump(branchTest8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined)), target);
Jump wasNotImmediate = jump();
// Now handle the immediate cases - undefined & null
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- addJump(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsNull()))), target);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsNull()))), target);
wasNotImmediate.link(this);
- RECORD_JUMP_TARGET(target);
}
void JIT::emit_op_jneq_ptr(Instruction* currentInstruction)
{
unsigned src = currentInstruction[1].u.operand;
- JSCell* ptr = currentInstruction[2].u.jsCell;
+ JSCell* ptr = currentInstruction[2].u.jsCell.get();
unsigned target = currentInstruction[3].u.operand;
emitGetVirtualRegister(src, regT0);
- addJump(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(JSValue(ptr)))), target);
-
- RECORD_JUMP_TARGET(target);
-}
-
-void JIT::emit_op_jsr(Instruction* currentInstruction)
-{
- int retAddrDst = currentInstruction[1].u.operand;
- int target = currentInstruction[2].u.operand;
- DataLabelPtr storeLocation = storePtrWithPatch(ImmPtr(0), Address(callFrameRegister, sizeof(Register) * retAddrDst));
- addJump(jump(), target);
- m_jsrSites.append(JSRInfo(storeLocation, label()));
- killLastResultRegister();
- RECORD_JUMP_TARGET(target);
-}
-
-void JIT::emit_op_sret(Instruction* currentInstruction)
-{
- jump(Address(callFrameRegister, sizeof(Register) * currentInstruction[1].u.operand));
- killLastResultRegister();
+ addJump(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(JSValue(ptr)))), target);
}
void JIT::emit_op_eq(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
- set32(Equal, regT1, regT0, regT0);
+ compare32(Equal, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
-void JIT::emit_op_bitnot(Instruction* currentInstruction)
-{
- emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
- emitJumpSlowCaseIfNotImmediateInteger(regT0);
-#if USE(JSVALUE64)
- not32(regT0);
- emitFastArithIntToImmNoCheck(regT0, regT0);
-#else
- xorPtr(Imm32(~JSImmediate::TagTypeNumber), regT0);
-#endif
- emitPutVirtualRegister(currentInstruction[1].u.operand);
-}
-
void JIT::emit_op_resolve_with_base(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_resolve_with_base);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
- stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
- stubCall.call(currentInstruction[2].u.operand);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
+ stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
+ stubCall.callWithValueProfiling(currentInstruction[2].u.operand);
}
-void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
+void JIT::emit_op_resolve_with_this(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_new_func_exp);
- stubCall.addArgument(ImmPtr(m_codeBlock->functionExpr(currentInstruction[2].u.operand)));
- stubCall.call(currentInstruction[1].u.operand);
+ JITStubCall stubCall(this, cti_op_resolve_with_this);
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[3].u.operand)));
+ stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
+ stubCall.callWithValueProfiling(currentInstruction[2].u.operand);
}
void JIT::emit_op_jtrue(Instruction* currentInstruction)
unsigned target = currentInstruction[2].u.operand;
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
- Jump isZero = branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsNumber(m_globalData, 0))));
+ Jump isZero = branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsNumber(0))));
addJump(emitJumpIfImmediateInteger(regT0), target);
- addJump(branchPtr(Equal, regT0, ImmPtr(JSValue::encode(jsBoolean(true)))), target);
- addSlowCase(branchPtr(NotEqual, regT0, ImmPtr(JSValue::encode(jsBoolean(false)))));
+ addJump(branchPtr(Equal, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(true)))), target);
+ addSlowCase(branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsBoolean(false)))));
isZero.link(this);
- RECORD_JUMP_TARGET(target);
}
void JIT::emit_op_neq(Instruction* currentInstruction)
{
emitGetVirtualRegisters(currentInstruction[2].u.operand, regT0, currentInstruction[3].u.operand, regT1);
emitJumpSlowCaseIfNotImmediateIntegers(regT0, regT1, regT2);
- set32(NotEqual, regT1, regT0, regT0);
+ compare32(NotEqual, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
emitGetVirtualRegister(base, regT0);
if (!m_codeBlock->isKnownNotImmediate(base))
isNotObject.append(emitJumpIfNotJSCell(regT0));
- if (base != m_codeBlock->thisRegister()) {
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- isNotObject.append(branch8(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(ObjectType)));
+ if (base != m_codeBlock->thisRegister() || m_codeBlock->isStrictMode()) {
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ isNotObject.append(emitJumpIfNotObject(regT2));
}
// We could inline the case where you have a valid cache, but
getPnamesStubCall.addArgument(regT0);
getPnamesStubCall.call(dst);
load32(Address(regT0, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStringsSize)), regT3);
- store32(Imm32(0), addressFor(i));
- store32(regT3, addressFor(size));
+ storePtr(tagTypeNumberRegister, payloadFor(i));
+ store32(TrustedImm32(Int32Tag), intTagFor(size));
+ store32(regT3, intPayloadFor(size));
Jump end = jump();
isNotObject.link(this);
move(regT0, regT1);
- and32(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT1);
- addJump(branch32(Equal, regT1, Imm32(JSImmediate::FullTagTypeNull)), breakTarget);
+ and32(TrustedImm32(~TagBitUndefined), regT1);
+ addJump(branch32(Equal, regT1, TrustedImm32(ValueNull)), breakTarget);
JITStubCall toObjectStubCall(this, cti_to_object);
toObjectStubCall.addArgument(regT0);
JumpList callHasProperty;
Label begin(this);
- load32(addressFor(i), regT0);
- Jump end = branch32(Equal, regT0, addressFor(size));
+ load32(intPayloadFor(i), regT0);
+ Jump end = branch32(Equal, regT0, intPayloadFor(size));
// Grab key @ i
loadPtr(addressFor(it), regT1);
loadPtr(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_jsStrings)), regT2);
-#if USE(JSVALUE64)
loadPtr(BaseIndex(regT2, regT0, TimesEight), regT2);
-#else
- loadPtr(BaseIndex(regT2, regT0, TimesFour), regT2);
-#endif
emitPutVirtualRegister(dst, regT2);
// Increment i
- add32(Imm32(1), regT0);
- store32(regT0, addressFor(i));
+ add32(TrustedImm32(1), regT0);
+ store32(regT0, intPayloadFor(i));
// Verify that i is valid:
emitGetVirtualRegister(base, regT0);
// Test base's structure
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
callHasProperty.append(branchPtr(NotEqual, regT2, Address(Address(regT1, OBJECT_OFFSETOF(JSPropertyNameIterator, m_cachedStructure)))));
// Test base's prototype chain
addJump(branchTestPtr(Zero, Address(regT3)), target);
Label checkPrototype(this);
- loadPtr(Address(regT2, OBJECT_OFFSETOF(Structure, m_prototype)), regT2);
+ loadPtr(Address(regT2, Structure::prototypeOffset()), regT2);
callHasProperty.append(emitJumpIfNotJSCell(regT2));
- loadPtr(Address(regT2, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT2);
callHasProperty.append(branchPtr(NotEqual, regT2, Address(regT3)));
- addPtr(Imm32(sizeof(Structure*)), regT3);
+ addPtr(TrustedImm32(sizeof(Structure*)), regT3);
branchTestPtr(NonZero, Address(regT3)).linkTo(checkPrototype, this);
// Continue loop.
unsigned src2 = currentInstruction[3].u.operand;
emitGetVirtualRegisters(src1, regT0, src2, regT1);
-
- // Jump to a slow case if either operand is a number, or if both are JSCell*s.
+
+ // Jump slow if both are cells (to cover strings).
move(regT0, regT2);
orPtr(regT1, regT2);
addSlowCase(emitJumpIfJSCell(regT2));
- addSlowCase(emitJumpIfImmediateNumber(regT2));
+
+ // Jump slow if either is a double. First test if it's an integer, which is fine, and then test
+ // if it's a double.
+ Jump leftOK = emitJumpIfImmediateInteger(regT0);
+ addSlowCase(emitJumpIfImmediateNumber(regT0));
+ leftOK.link(this);
+ Jump rightOK = emitJumpIfImmediateInteger(regT1);
+ addSlowCase(emitJumpIfImmediateNumber(regT1));
+ rightOK.link(this);
if (type == OpStrictEq)
- set32(Equal, regT1, regT0, regT0);
+ comparePtr(Equal, regT1, regT0, regT0);
else
- set32(NotEqual, regT1, regT0, regT0);
+ comparePtr(NotEqual, regT1, regT0, regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
Jump wasImmediate = emitJumpIfImmediateInteger(regT0);
emitJumpSlowCaseIfNotJSCell(regT0, srcVReg);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- addSlowCase(branch8(NotEqual, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_type)), Imm32(NumberType)));
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ addSlowCase(branch8(NotEqual, Address(regT2, Structure::typeInfoTypeOffset()), TrustedImm32(NumberType)));
wasImmediate.link(this);
void JIT::emit_op_push_new_scope(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_push_new_scope);
- stubCall.addArgument(ImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
+ stubCall.addArgument(TrustedImmPtr(&m_codeBlock->identifier(currentInstruction[2].u.operand)));
stubCall.addArgument(currentInstruction[3].u.operand, regT2);
stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_catch(Instruction* currentInstruction)
{
killLastResultRegister(); // FIXME: Implicitly treat op_catch as a labeled statement, and remove this line of code.
- peek(callFrameRegister, OBJECT_OFFSETOF(struct JITStackFrame, callFrame) / sizeof (void*));
+ move(regT0, callFrameRegister);
+ peek(regT3, OBJECT_OFFSETOF(struct JITStackFrame, globalData) / sizeof(void*));
+ loadPtr(Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)), regT0);
+ storePtr(TrustedImmPtr(JSValue::encode(JSValue())), Address(regT3, OBJECT_OFFSETOF(JSGlobalData, exception)));
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emit_op_jmp_scopes(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_jmp_scopes);
- stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
stubCall.call();
addJump(jump(), currentInstruction[2].u.operand);
- RECORD_JUMP_TARGET(currentInstruction[2].u.operand);
}
void JIT::emit_op_switch_imm(Instruction* currentInstruction)
// create jump table for switch destinations, track this switch statement.
SimpleJumpTable* jumpTable = &m_codeBlock->immediateSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset, SwitchRecord::Immediate));
+ m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Immediate));
jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
JITStubCall stubCall(this, cti_op_switch_imm);
stubCall.addArgument(scrutinee, regT2);
- stubCall.addArgument(Imm32(tableIndex));
+ stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
// create jump table for switch destinations, track this switch statement.
SimpleJumpTable* jumpTable = &m_codeBlock->characterSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset, SwitchRecord::Character));
+ m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset, SwitchRecord::Character));
jumpTable->ctiOffsets.grow(jumpTable->branchOffsets.size());
JITStubCall stubCall(this, cti_op_switch_char);
stubCall.addArgument(scrutinee, regT2);
- stubCall.addArgument(Imm32(tableIndex));
+ stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
// create jump table for switch destinations, track this switch statement.
StringJumpTable* jumpTable = &m_codeBlock->stringSwitchJumpTable(tableIndex);
- m_switches.append(SwitchRecord(jumpTable, m_bytecodeIndex, defaultOffset));
+ m_switches.append(SwitchRecord(jumpTable, m_bytecodeOffset, defaultOffset));
JITStubCall stubCall(this, cti_op_switch_string);
stubCall.addArgument(scrutinee, regT2);
- stubCall.addArgument(Imm32(tableIndex));
+ stubCall.addArgument(TrustedImm32(tableIndex));
stubCall.call();
jump(regT0);
}
-void JIT::emit_op_new_error(Instruction* currentInstruction)
+void JIT::emit_op_throw_reference_error(Instruction* currentInstruction)
{
- JITStubCall stubCall(this, cti_op_new_error);
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(ImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[3].u.operand))));
- stubCall.addArgument(Imm32(m_bytecodeIndex));
- stubCall.call(currentInstruction[1].u.operand);
+ JITStubCall stubCall(this, cti_op_throw_reference_error);
+ if (!m_codeBlock->getConstant(currentInstruction[1].u.operand).isNumber())
+ stubCall.addArgument(TrustedImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ else
+ stubCall.addArgument(ImmPtr(JSValue::encode(m_codeBlock->getConstant(currentInstruction[1].u.operand))));
+ stubCall.call();
}
void JIT::emit_op_debug(Instruction* currentInstruction)
breakpoint();
#else
JITStubCall stubCall(this, cti_op_debug);
- stubCall.addArgument(Imm32(currentInstruction[1].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[2].u.operand));
- stubCall.addArgument(Imm32(currentInstruction[3].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[1].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
stubCall.call();
#endif
}
emitGetVirtualRegister(src1, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- setTest8(NonZero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined), regT0);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ test8(NonZero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- setPtr(Equal, regT0, Imm32(JSImmediate::FullTagTypeNull), regT0);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ comparePtr(Equal, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
emitGetVirtualRegister(src1, regT0);
Jump isImmediate = emitJumpIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT2);
- setTest8(Zero, Address(regT2, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(MasqueradesAsUndefined), regT0);
+ loadPtr(Address(regT0, JSCell::structureOffset()), regT2);
+ test8(Zero, Address(regT2, Structure::typeInfoFlagsOffset()), TrustedImm32(MasqueradesAsUndefined), regT0);
Jump wasNotImmediate = jump();
isImmediate.link(this);
- andPtr(Imm32(~JSImmediate::ExtendedTagBitUndefined), regT0);
- setPtr(NotEqual, regT0, Imm32(JSImmediate::FullTagTypeNull), regT0);
+ andPtr(TrustedImm32(~TagBitUndefined), regT0);
+ comparePtr(NotEqual, regT0, TrustedImm32(ValueNull), regT0);
wasNotImmediate.link(this);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(dst);
-
}
void JIT::emit_op_enter(Instruction*)
}
-void JIT::emit_op_enter_with_activation(Instruction* currentInstruction)
+void JIT::emit_op_create_activation(Instruction* currentInstruction)
{
- // Even though CTI doesn't use them, we initialize our constant
- // registers to zap stale pointers, to avoid unnecessarily prolonging
- // object lifetime and increasing GC pressure.
- size_t count = m_codeBlock->m_numVars;
- for (size_t j = 0; j < count; ++j)
- emitInitRegister(j);
-
+ unsigned dst = currentInstruction[1].u.operand;
+
+ Jump activationCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
JITStubCall(this, cti_op_push_activation).call(currentInstruction[1].u.operand);
+ emitPutVirtualRegister(dst);
+ activationCreated.link(this);
}
-void JIT::emit_op_create_arguments(Instruction*)
+void JIT::emit_op_create_arguments(Instruction* currentInstruction)
{
- Jump argsCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * RegisterFile::ArgumentsRegister));
- if (m_codeBlock->m_numParameters == 1)
- JITStubCall(this, cti_op_create_arguments_no_params).call();
- else
- JITStubCall(this, cti_op_create_arguments).call();
+ unsigned dst = currentInstruction[1].u.operand;
+
+ Jump argsCreated = branchTestPtr(NonZero, Address(callFrameRegister, sizeof(Register) * dst));
+ JITStubCall(this, cti_op_create_arguments).call();
+ emitPutVirtualRegister(dst);
+ emitPutVirtualRegister(unmodifiedArgumentsRegister(dst));
argsCreated.link(this);
}
-
-void JIT::emit_op_init_arguments(Instruction*)
+
+void JIT::emit_op_init_lazy_reg(Instruction* currentInstruction)
{
- storePtr(ImmPtr(0), Address(callFrameRegister, sizeof(Register) * RegisterFile::ArgumentsRegister));
+ unsigned dst = currentInstruction[1].u.operand;
+
+ storePtr(TrustedImmPtr(0), Address(callFrameRegister, sizeof(Register) * dst));
}
void JIT::emit_op_convert_this(Instruction* currentInstruction)
emitGetVirtualRegister(currentInstruction[1].u.operand, regT0);
emitJumpSlowCaseIfNotJSCell(regT0);
- loadPtr(Address(regT0, OBJECT_OFFSETOF(JSCell, m_structure)), regT1);
- addSlowCase(branchTest8(NonZero, Address(regT1, OBJECT_OFFSETOF(Structure, m_typeInfo.m_flags)), Imm32(NeedsThisConversion)));
+ addSlowCase(branchPtr(Equal, Address(regT0, JSCell::classInfoOffset()), TrustedImmPtr(&JSString::s_info)));
+}
+void JIT::emit_op_get_callee(Instruction* currentInstruction)
+{
+ unsigned result = currentInstruction[1].u.operand;
+ emitGetFromCallFrameHeaderPtr(RegisterFile::Callee, regT0);
+ emitPutVirtualRegister(result);
+}
+
+void JIT::emit_op_create_this(Instruction* currentInstruction)
+{
+ emitGetVirtualRegister(currentInstruction[2].u.operand, regT2);
+ emitJumpSlowCaseIfNotJSCell(regT2, currentInstruction[2].u.operand);
+ loadPtr(Address(regT2, JSCell::structureOffset()), regT1);
+ addSlowCase(emitJumpIfNotObject(regT1));
+
+ // now we know that the prototype is an object, but we don't know if it's got an
+ // inheritor ID
+
+ loadPtr(Address(regT2, JSObject::offsetOfInheritorID()), regT2);
+ addSlowCase(branchTestPtr(Zero, regT2));
+
+ // now regT2 contains the inheritorID, which is the structure that the newly
+ // allocated object will have.
+
+ emitAllocateJSFinalObject(regT2, regT0, regT1);
+
+ emitPutVirtualRegister(currentInstruction[1].u.operand);
+}
+
+void JIT::emitSlow_op_create_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ linkSlowCaseIfNotJSCell(iter, currentInstruction[2].u.operand); // not a cell
+ linkSlowCase(iter); // not an object
+ linkSlowCase(iter); // doesn't have an inheritor ID
+ linkSlowCase(iter); // allocation failed
+ JITStubCall stubCall(this, cti_op_create_this);
+ stubCall.addArgument(currentInstruction[2].u.operand, regT1);
+ stubCall.call(currentInstruction[1].u.operand);
}
void JIT::emit_op_profile_will_call(Instruction* currentInstruction)
{
- peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
+ peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof(void*));
Jump noProfiler = branchTestPtr(Zero, Address(regT1));
JITStubCall stubCall(this, cti_op_profile_will_call);
void JIT::emit_op_profile_did_call(Instruction* currentInstruction)
{
- peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof (void*));
+ peek(regT1, OBJECT_OFFSETOF(JITStackFrame, enabledProfilerReference) / sizeof(void*));
Jump noProfiler = branchTestPtr(Zero, Address(regT1));
JITStubCall stubCall(this, cti_op_profile_did_call);
void JIT::emitSlow_op_convert_this(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ void* globalThis = m_codeBlock->globalObject()->globalScopeChain()->globalThis.get();
+
linkSlowCase(iter);
+ Jump isNotUndefined = branchPtr(NotEqual, regT0, TrustedImmPtr(JSValue::encode(jsUndefined())));
+ move(TrustedImmPtr(globalThis), regT0);
+ emitPutVirtualRegister(currentInstruction[1].u.operand, regT0);
+ emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_convert_this));
+
+ isNotUndefined.link(this);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_convert_this);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_construct_verify(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
- linkSlowCase(iter);
- emitGetVirtualRegister(currentInstruction[2].u.operand, regT0);
- emitPutVirtualRegister(currentInstruction[1].u.operand);
-}
-
void JIT::emitSlow_op_to_primitive(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
stubCall.call(currentInstruction[1].u.operand);
}
-void JIT::emitSlow_op_loop_if_lesseq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned op2 = currentInstruction[2].u.operand;
- unsigned target = currentInstruction[3].u.operand;
- if (isOperandConstantImmediateInt(op2)) {
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_loop_if_lesseq);
- stubCall.addArgument(regT0);
- stubCall.addArgument(currentInstruction[2].u.operand, regT2);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target);
- } else {
- linkSlowCase(iter);
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_loop_if_lesseq);
- stubCall.addArgument(regT0);
- stubCall.addArgument(regT1);
- stubCall.call();
- emitJumpSlowToHot(branchTest32(NonZero, regT0), target);
- }
-}
-
-void JIT::emitSlow_op_put_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- unsigned base = currentInstruction[1].u.operand;
- unsigned property = currentInstruction[2].u.operand;
- unsigned value = currentInstruction[3].u.operand;
-
- linkSlowCase(iter); // property int32 check
- linkSlowCaseIfNotJSCell(iter, base); // base cell check
- linkSlowCase(iter); // base not array check
- linkSlowCase(iter); // in vector check
-
- JITStubCall stubPutByValCall(this, cti_op_put_by_val);
- stubPutByValCall.addArgument(regT0);
- stubPutByValCall.addArgument(property, regT2);
- stubPutByValCall.addArgument(value, regT2);
- stubPutByValCall.call();
-}
-
void JIT::emitSlow_op_not(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
- xorPtr(Imm32(static_cast<int32_t>(JSImmediate::FullTagTypeBool)), regT0);
+ xorPtr(TrustedImm32(static_cast<int32_t>(ValueFalse)), regT0);
JITStubCall stubCall(this, cti_op_not);
stubCall.addArgument(regT0);
stubCall.call(currentInstruction[1].u.operand);
emitJumpSlowToHot(branchTest32(Zero, regT0), currentInstruction[2].u.operand); // inverted!
}
-void JIT::emitSlow_op_bitnot(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
-{
- linkSlowCase(iter);
- JITStubCall stubCall(this, cti_op_bitnot);
- stubCall.addArgument(regT0);
- stubCall.call(currentInstruction[1].u.operand);
-}
-
void JIT::emitSlow_op_jtrue(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
linkSlowCase(iter);
stubCall.addArgument(regT0);
stubCall.addArgument(regT1);
stubCall.call();
- xor32(Imm32(0x1), regT0);
+ xor32(TrustedImm32(0x1), regT0);
emitTagAsBoolImmediate(regT0);
emitPutVirtualRegister(currentInstruction[1].u.operand);
}
void JIT::emitSlow_op_stricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_stricteq);
void JIT::emitSlow_op_nstricteq(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
+ linkSlowCase(iter);
linkSlowCase(iter);
linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_nstricteq);
stubCall.call(currentInstruction[1].u.operand);
}
+void JIT::emitSlow_op_check_has_instance(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned baseVal = currentInstruction[1].u.operand;
+
+ linkSlowCaseIfNotJSCell(iter, baseVal);
+ linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_check_has_instance);
+ stubCall.addArgument(baseVal, regT2);
+ stubCall.call();
+}
+
void JIT::emitSlow_op_instanceof(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
unsigned proto = currentInstruction[4].u.operand;
linkSlowCaseIfNotJSCell(iter, value);
- linkSlowCaseIfNotJSCell(iter, baseVal);
linkSlowCaseIfNotJSCell(iter, proto);
linkSlowCase(iter);
+ linkSlowCase(iter);
JITStubCall stubCall(this, cti_op_instanceof);
stubCall.addArgument(value, regT2);
stubCall.addArgument(baseVal, regT2);
void JIT::emitSlow_op_call(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call);
+ compileOpCallSlowCase(op_call, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emitSlow_op_call_eval(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_call_eval);
+ compileOpCallSlowCase(op_call_eval, currentInstruction, iter, m_callLinkInfoIndex);
}
-
+
void JIT::emitSlow_op_call_varargs(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallVarargsSlowCase(currentInstruction, iter);
+ compileOpCallSlowCase(op_call_varargs, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emitSlow_op_construct(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
- compileOpCallSlowCase(currentInstruction, iter, m_callLinkInfoIndex++, op_construct);
+ compileOpCallSlowCase(op_construct, currentInstruction, iter, m_callLinkInfoIndex++);
}
void JIT::emitSlow_op_to_jsnumber(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
stubCall.call(currentInstruction[1].u.operand);
}
-#endif // !USE(JSVALUE32_64)
+void JIT::emit_op_get_arguments_length(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int argumentsRegister = currentInstruction[2].u.operand;
+ addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT0);
+ sub32(TrustedImm32(1), regT0);
+ emitFastArithReTagImmediate(regT0, regT0);
+ emitPutVirtualRegister(dst, regT0);
+}
+
+void JIT::emitSlow_op_get_arguments_length(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ linkSlowCase(iter);
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned base = currentInstruction[2].u.operand;
+ Identifier* ident = &(m_codeBlock->identifier(currentInstruction[3].u.operand));
+
+ emitGetVirtualRegister(base, regT0);
+ JITStubCall stubCall(this, cti_op_get_by_id_generic);
+ stubCall.addArgument(regT0);
+ stubCall.addArgument(TrustedImmPtr(ident));
+ stubCall.call(dst);
+}
+
+void JIT::emit_op_get_argument_by_val(Instruction* currentInstruction)
+{
+ int dst = currentInstruction[1].u.operand;
+ int argumentsRegister = currentInstruction[2].u.operand;
+ int property = currentInstruction[3].u.operand;
+ addSlowCase(branchTestPtr(NonZero, addressFor(argumentsRegister)));
+ emitGetVirtualRegister(property, regT1);
+ addSlowCase(emitJumpIfNotImmediateInteger(regT1));
+ add32(TrustedImm32(1), regT1);
+ // regT1 now contains the integer index of the argument we want, including this
+ emitGetFromCallFrameHeader32(RegisterFile::ArgumentCount, regT2);
+ addSlowCase(branch32(AboveOrEqual, regT1, regT2));
+
+ neg32(regT1);
+ signExtend32ToPtr(regT1, regT1);
+ loadPtr(BaseIndex(callFrameRegister, regT1, TimesEight, CallFrame::thisArgumentOffset() * static_cast<int>(sizeof(Register))), regT0);
+ emitPutVirtualRegister(dst, regT0);
+}
+
+void JIT::emitSlow_op_get_argument_by_val(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ unsigned dst = currentInstruction[1].u.operand;
+ unsigned arguments = currentInstruction[2].u.operand;
+ unsigned property = currentInstruction[3].u.operand;
+
+ linkSlowCase(iter);
+ Jump skipArgumentsCreation = jump();
+
+ linkSlowCase(iter);
+ linkSlowCase(iter);
+ JITStubCall(this, cti_op_create_arguments).call();
+ emitPutVirtualRegister(arguments);
+ emitPutVirtualRegister(unmodifiedArgumentsRegister(arguments));
+
+ skipArgumentsCreation.link(this);
+ JITStubCall stubCall(this, cti_op_get_by_val);
+ stubCall.addArgument(arguments, regT2);
+ stubCall.addArgument(property, regT2);
+ stubCall.call(dst);
+}
+
+#endif // USE(JSVALUE64)
void JIT::emit_op_resolve_global_dynamic(Instruction* currentInstruction)
{
- int skip = currentInstruction[6].u.operand + m_codeBlock->needsFullScopeChain();
+ int skip = currentInstruction[5].u.operand;
emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT0);
+
+ bool checkTopLevel = m_codeBlock->codeType() == FunctionCode && m_codeBlock->needsFullScopeChain();
+ ASSERT(skip || !checkTopLevel);
+ if (checkTopLevel && skip--) {
+ Jump activationNotCreated;
+ if (checkTopLevel)
+ activationNotCreated = branchTestPtr(Zero, addressFor(m_codeBlock->activationRegister()));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
+ addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
+ loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, next)), regT0);
+ activationNotCreated.link(this);
+ }
while (skip--) {
loadPtr(Address(regT0, OBJECT_OFFSETOF(ScopeChainNode, object)), regT1);
addSlowCase(checkStructure(regT1, m_globalData->activationStructure.get()));
void JIT::emitSlow_op_resolve_global_dynamic(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
{
unsigned dst = currentInstruction[1].u.operand;
- void* globalObject = currentInstruction[2].u.jsCell;
- Identifier* ident = &m_codeBlock->identifier(currentInstruction[3].u.operand);
- int skip = currentInstruction[6].u.operand + m_codeBlock->needsFullScopeChain();
+ Identifier* ident = &m_codeBlock->identifier(currentInstruction[2].u.operand);
+ int skip = currentInstruction[5].u.operand;
while (skip--)
linkSlowCase(iter);
JITStubCall resolveStubCall(this, cti_op_resolve);
- resolveStubCall.addArgument(ImmPtr(ident));
+ resolveStubCall.addArgument(TrustedImmPtr(ident));
resolveStubCall.call(dst);
emitJumpSlowToHot(jump(), OPCODE_LENGTH(op_resolve_global_dynamic));
linkSlowCase(iter); // We managed to skip all the nodes in the scope chain, but the cache missed.
JITStubCall stubCall(this, cti_op_resolve_global);
- stubCall.addArgument(ImmPtr(globalObject));
- stubCall.addArgument(ImmPtr(ident));
- stubCall.addArgument(Imm32(currentIndex));
- stubCall.call(dst);
+ stubCall.addArgument(TrustedImmPtr(ident));
+ stubCall.addArgument(TrustedImm32(currentIndex));
+ stubCall.addArgument(regT0);
+ stubCall.callWithValueProfiling(dst);
}
void JIT::emit_op_new_regexp(Instruction* currentInstruction)
{
JITStubCall stubCall(this, cti_op_new_regexp);
- stubCall.addArgument(ImmPtr(m_codeBlock->regexp(currentInstruction[2].u.operand)));
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->regexp(currentInstruction[2].u.operand)));
stubCall.call(currentInstruction[1].u.operand);
}
-// For both JSValue32_64 and JSValue32
-#if ENABLE(JIT_OPTIMIZE_MOD)
-#if CPU(ARM_TRADITIONAL)
-void JIT::softModulo()
+void JIT::emit_op_new_func(Instruction* currentInstruction)
{
- push(regS0);
- push(regS1);
- push(regT1);
- push(regT3);
+ Jump lazyJump;
+ int dst = currentInstruction[1].u.operand;
+ if (currentInstruction[3].u.operand) {
#if USE(JSVALUE32_64)
- m_assembler.mov_r(regT3, regT2);
- m_assembler.mov_r(regT2, regT0);
+ lazyJump = branch32(NotEqual, tagFor(dst), TrustedImm32(JSValue::EmptyValueTag));
#else
- m_assembler.mov_r(regT3, m_assembler.asr(regT2, 1));
- m_assembler.mov_r(regT2, m_assembler.asr(regT0, 1));
+ lazyJump = branchTestPtr(NonZero, addressFor(dst));
#endif
- m_assembler.mov_r(regT1, ARMAssembler::getOp2(0));
-
- m_assembler.teq_r(regT3, ARMAssembler::getOp2(0));
- m_assembler.rsb_r(regT3, regT3, ARMAssembler::getOp2(0), ARMAssembler::MI);
- m_assembler.eor_r(regT1, regT1, ARMAssembler::getOp2(1), ARMAssembler::MI);
-
- m_assembler.teq_r(regT2, ARMAssembler::getOp2(0));
- m_assembler.rsb_r(regT2, regT2, ARMAssembler::getOp2(0), ARMAssembler::MI);
- m_assembler.eor_r(regT1, regT1, ARMAssembler::getOp2(2), ARMAssembler::MI);
-
- Jump exitBranch = branch32(LessThan, regT2, regT3);
+ }
- m_assembler.sub_r(regS1, regT3, ARMAssembler::getOp2(1));
- m_assembler.tst_r(regS1, regT3);
- m_assembler.and_r(regT2, regT2, regS1, ARMAssembler::EQ);
- m_assembler.and_r(regT0, regS1, regT3);
- Jump exitBranch2 = branchTest32(Zero, regT0);
-
- m_assembler.clz_r(regS1, regT2);
- m_assembler.clz_r(regS0, regT3);
- m_assembler.sub_r(regS0, regS0, regS1);
+ FunctionExecutable* executable = m_codeBlock->functionDecl(currentInstruction[2].u.operand);
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
+ emitAllocateJSFunction(executable, regT2, regT0, regT1);
- m_assembler.rsbs_r(regS0, regS0, ARMAssembler::getOp2(31));
+ emitStoreCell(dst, regT0);
- m_assembler.mov_r(regS0, m_assembler.lsl(regS0, 1), ARMAssembler::NE);
+ if (currentInstruction[3].u.operand) {
+#if USE(JSVALUE32_64)
+ unmap();
+#else
+ killLastResultRegister();
+#endif
+ lazyJump.link(this);
+ }
+}
- m_assembler.add_r(ARMRegisters::pc, ARMRegisters::pc, m_assembler.lsl(regS0, 2), ARMAssembler::NE);
- m_assembler.mov_r(regT0, regT0);
-
- for (int i = 31; i > 0; --i) {
- m_assembler.cmp_r(regT2, m_assembler.lsl(regT3, i));
- m_assembler.sub_r(regT2, regT2, m_assembler.lsl(regT3, i), ARMAssembler::CS);
+void JIT::emitSlow_op_new_func(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_new_func);
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionDecl(currentInstruction[2].u.operand)));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_new_func_exp(Instruction* currentInstruction)
+{
+ FunctionExecutable* executable = m_codeBlock->functionExpr(currentInstruction[2].u.operand);
+
+ // We only inline the allocation of a anonymous function expressions
+ // If we want to be able to allocate a named function expression, we would
+ // need to be able to do inline allocation of a JSStaticScopeObject.
+ if (executable->name().isNull()) {
+ emitGetFromCallFrameHeaderPtr(RegisterFile::ScopeChain, regT2);
+ emitAllocateJSFunction(executable, regT2, regT0, regT1);
+ emitStoreCell(currentInstruction[1].u.operand, regT0);
+ return;
}
- m_assembler.cmp_r(regT2, regT3);
- m_assembler.sub_r(regT2, regT2, regT3, ARMAssembler::CS);
-
- exitBranch.link(this);
- exitBranch2.link(this);
-
- m_assembler.teq_r(regT1, ARMAssembler::getOp2(0));
- m_assembler.rsb_r(regT2, regT2, ARMAssembler::getOp2(0), ARMAssembler::GT);
-
-#if USE(JSVALUE32_64)
- m_assembler.mov_r(regT0, regT2);
-#else
- m_assembler.mov_r(regT0, m_assembler.lsl(regT2, 1));
- m_assembler.eor_r(regT0, regT0, ARMAssembler::getOp2(1));
-#endif
- pop(regT3);
- pop(regT1);
- pop(regS1);
- pop(regS0);
- ret();
+ JITStubCall stubCall(this, cti_op_new_func_exp);
+ stubCall.addArgument(TrustedImmPtr(m_codeBlock->functionExpr(currentInstruction[2].u.operand)));
+ stubCall.call(currentInstruction[1].u.operand);
}
-#else
-#error "JIT_OPTIMIZE_MOD not yet supported on this platform."
-#endif // CPU(ARM_TRADITIONAL)
-#endif
+
+void JIT::emitSlow_op_new_func_exp(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ FunctionExecutable* executable = m_codeBlock->functionExpr(currentInstruction[2].u.operand);
+ if (!executable->name().isNull())
+ return;
+ linkSlowCase(iter);
+ JITStubCall stubCall(this, cti_op_new_func_exp);
+ stubCall.addArgument(TrustedImmPtr(executable));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_new_array(Instruction* currentInstruction)
+{
+ int length = currentInstruction[3].u.operand;
+ if (CopiedSpace::isOversize(JSArray::storageSize(length))) {
+ JITStubCall stubCall(this, cti_op_new_array);
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.call(currentInstruction[1].u.operand);
+ return;
+ }
+ int dst = currentInstruction[1].u.operand;
+ int values = currentInstruction[2].u.operand;
+
+ emitAllocateJSArray(values, length, regT0, regT1, regT2);
+ emitStoreCell(dst, regT0);
+}
+
+void JIT::emitSlow_op_new_array(Instruction* currentInstruction, Vector<SlowCaseEntry>::iterator& iter)
+{
+ // If the allocation would be oversize, we will already make the proper stub call above in
+ // emit_op_new_array.
+ int length = currentInstruction[3].u.operand;
+ if (CopiedSpace::isOversize(JSArray::storageSize(length)))
+ return;
+ linkSlowCase(iter); // Not enough space in CopiedSpace for storage.
+ linkSlowCase(iter); // Not enough space in MarkedSpace for cell.
+
+ JITStubCall stubCall(this, cti_op_new_array);
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
+void JIT::emit_op_new_array_buffer(Instruction* currentInstruction)
+{
+ JITStubCall stubCall(this, cti_op_new_array_buffer);
+ stubCall.addArgument(TrustedImm32(currentInstruction[2].u.operand));
+ stubCall.addArgument(TrustedImm32(currentInstruction[3].u.operand));
+ stubCall.call(currentInstruction[1].u.operand);
+}
+
} // namespace JSC
#endif // ENABLE(JIT)
projects / apple / javascriptcore.git / blobdiff