Version 3.8.6

src/ia32/code-stubs-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * 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
@@ skipping 110 matching lines @@
 void FastNewContextStub::Generate(MacroAssembler* masm) {
   // Try to allocate the context in new space.
   Label gc;
   int length = slots_ + Context::MIN_CONTEXT_SLOTS;
   __ AllocateInNewSpace((length * kPointerSize) + FixedArray::kHeaderSize,
                         eax, ebx, ecx, &gc, TAG_OBJECT);
 
   // Get the function from the stack.
   __ mov(ecx, Operand(esp, 1 * kPointerSize));
 
-  // Setup the object header.
+  // Set up the object header.
   Factory* factory = masm->isolate()->factory();
   __ mov(FieldOperand(eax, HeapObject::kMapOffset),
          factory->function_context_map());
   __ mov(FieldOperand(eax, Context::kLengthOffset),
          Immediate(Smi::FromInt(length)));
 
-  // Setup the fixed slots.
+  // Set up the fixed slots.
   __ Set(ebx, Immediate(0));  // Set to NULL.
   __ mov(Operand(eax, Context::SlotOffset(Context::CLOSURE_INDEX)), ecx);
   __ mov(Operand(eax, Context::SlotOffset(Context::PREVIOUS_INDEX)), esi);
   __ mov(Operand(eax, Context::SlotOffset(Context::EXTENSION_INDEX)), ebx);
 
   // Copy the global object from the previous context.
   __ mov(ebx, Operand(esi, Context::SlotOffset(Context::GLOBAL_INDEX)));
   __ mov(Operand(eax, Context::SlotOffset(Context::GLOBAL_INDEX)), ebx);
 
   // Initialize the rest of the slots to undefined.
@@ skipping 23 matching lines @@
   int length = slots_ + Context::MIN_CONTEXT_SLOTS;
   __ AllocateInNewSpace(FixedArray::SizeFor(length),
                         eax, ebx, ecx, &gc, TAG_OBJECT);
 
   // Get the function or sentinel from the stack.
   __ mov(ecx, Operand(esp, 1 * kPointerSize));
 
   // Get the serialized scope info from the stack.
   __ mov(ebx, Operand(esp, 2 * kPointerSize));
 
-  // Setup the object header.
+  // Set up the object header.
   Factory* factory = masm->isolate()->factory();
   __ mov(FieldOperand(eax, HeapObject::kMapOffset),
          factory->block_context_map());
   __ mov(FieldOperand(eax, Context::kLengthOffset),
          Immediate(Smi::FromInt(length)));
 
   // If this block context is nested in the global context we get a smi
   // sentinel instead of a function. The block context should get the
   // canonical empty function of the global context as its closure which
   // we still have to look up.
   Label after_sentinel;
   __ JumpIfNotSmi(ecx, &after_sentinel, Label::kNear);
   if (FLAG_debug_code) {
     const char* message = "Expected 0 as a Smi sentinel";
     __ cmp(ecx, 0);
     __ Assert(equal, message);
   }
   __ mov(ecx, GlobalObjectOperand());
   __ mov(ecx, FieldOperand(ecx, GlobalObject::kGlobalContextOffset));
   __ mov(ecx, ContextOperand(ecx, Context::CLOSURE_INDEX));
   __ bind(&after_sentinel);
 
-  // Setup the fixed slots.
+  // Set up the fixed slots.
   __ mov(ContextOperand(eax, Context::CLOSURE_INDEX), ecx);
   __ mov(ContextOperand(eax, Context::PREVIOUS_INDEX), esi);
   __ mov(ContextOperand(eax, Context::EXTENSION_INDEX), ebx);
 
   // Copy the global object from the previous context.
   __ mov(ebx, ContextOperand(esi, Context::GLOBAL_INDEX));
   __ mov(ContextOperand(eax, Context::GLOBAL_INDEX), ebx);
 
   // Initialize the rest of the slots to the hole value.
   if (slots_ == 1) {
@@ skipping 3156 matching lines @@
   // edi = address of boilerplate object (tagged)
   // esp[0] = mapped parameter count (tagged)
   // esp[8] = parameter count (tagged)
   // esp[12] = address of receiver argument
   // Copy the JS object part.
   for (int i = 0; i < JSObject::kHeaderSize; i += kPointerSize) {
     __ mov(edx, FieldOperand(edi, i));
     __ mov(FieldOperand(eax, i), edx);
   }
 
-  // Setup the callee in-object property.
+  // Set up the callee in-object property.
   STATIC_ASSERT(Heap::kArgumentsCalleeIndex == 1);
   __ mov(edx, Operand(esp, 4 * kPointerSize));
   __ mov(FieldOperand(eax, JSObject::kHeaderSize +
                       Heap::kArgumentsCalleeIndex * kPointerSize),
          edx);
 
   // Use the length (smi tagged) and set that as an in-object property too.
   STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0);
   __ mov(FieldOperand(eax, JSObject::kHeaderSize +
                       Heap::kArgumentsLengthIndex * kPointerSize),
          ecx);
 
-  // Setup the elements pointer in the allocated arguments object.
+  // Set up the elements pointer in the allocated arguments object.
   // If we allocated a parameter map, edi will point there, otherwise to the
   // backing store.
   __ lea(edi, Operand(eax, Heap::kArgumentsObjectSize));
   __ mov(FieldOperand(eax, JSObject::kElementsOffset), edi);
 
   // eax = address of new object (tagged)
   // ebx = mapped parameter count (tagged)
   // ecx = argument count (tagged)
   // edi = address of parameter map or backing store (tagged)
   // esp[0] = mapped parameter count (tagged)
@@ skipping 158 matching lines @@
          ecx);
 
   // If there are no actual arguments, we're done.
   Label done;
   __ test(ecx, ecx);
   __ j(zero, &done, Label::kNear);
 
   // Get the parameters pointer from the stack.
   __ mov(edx, Operand(esp, 2 * kPointerSize));
 
-  // Setup the elements pointer in the allocated arguments object and
+  // Set up the elements pointer in the allocated arguments object and
   // initialize the header in the elements fixed array.
   __ lea(edi, Operand(eax, Heap::kArgumentsObjectSizeStrict));
   __ mov(FieldOperand(eax, JSObject::kElementsOffset), edi);
   __ mov(FieldOperand(edi, FixedArray::kMapOffset),
          Immediate(FACTORY->fixed_array_map()));
 
   __ mov(FieldOperand(edi, FixedArray::kLengthOffset), ecx);
   // Untag the length for the loop below.
   __ SmiUntag(ecx);
 
@@ skipping 1358 matching lines @@
 
   __ bind(&throw_normal_exception);
   GenerateThrowTOS(masm);
 }
 
 
 void JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) {
   Label invoke, handler_entry, exit;
   Label not_outermost_js, not_outermost_js_2;
 
-  // Setup frame.
+  // Set up frame.
   __ push(ebp);
   __ mov(ebp, esp);
 
   // Push marker in two places.
   int marker = is_construct ? StackFrame::ENTRY_CONSTRUCT : StackFrame::ENTRY;
   __ push(Immediate(Smi::FromInt(marker)));  // context slot
   __ push(Immediate(Smi::FromInt(marker)));  // function slot
   // Save callee-saved registers (C calling conventions).
   __ push(edi);
   __ push(esi);
@@ skipping 110 matching lines @@
   Register object = eax;  // Object (lhs).
   Register map = ebx;  // Map of the object.
   Register function = edx;  // Function (rhs).
   Register prototype = edi;  // Prototype of the function.
   Register scratch = ecx;
 
   // Constants describing the call site code to patch.
   static const int kDeltaToCmpImmediate = 2;
   static const int kDeltaToMov = 8;
   static const int kDeltaToMovImmediate = 9;
-  static const int8_t kCmpEdiImmediateByte1 = BitCast<int8_t, uint8_t>(0x81);
-  static const int8_t kCmpEdiImmediateByte2 = BitCast<int8_t, uint8_t>(0xff);
+  static const int8_t kCmpEdiOperandByte1 = BitCast<int8_t, uint8_t>(0x3b);
+  static const int8_t kCmpEdiOperandByte2 = BitCast<int8_t, uint8_t>(0x3d);
   static const int8_t kMovEaxImmediateByte = BitCast<int8_t, uint8_t>(0xb8);
 
   ExternalReference roots_array_start =
       ExternalReference::roots_array_start(masm->isolate());
 
   ASSERT_EQ(object.code(), InstanceofStub::left().code());
   ASSERT_EQ(function.code(), InstanceofStub::right().code());
 
   // Get the object and function - they are always both needed.
   Label slow, not_js_object;
@@ skipping 44 matching lines @@
   __ mov(Operand::StaticArray(scratch, times_pointer_size, roots_array_start),
          function);
   } else {
     // The constants for the code patching are based on no push instructions
     // at the call site.
     ASSERT(HasArgsInRegisters());
     // Get return address and delta to inlined map check.
     __ mov(scratch, Operand(esp, 0 * kPointerSize));
     __ sub(scratch, Operand(esp, 1 * kPointerSize));
     if (FLAG_debug_code) {
-      __ cmpb(Operand(scratch, 0), kCmpEdiImmediateByte1);
+      __ cmpb(Operand(scratch, 0), kCmpEdiOperandByte1);
       __ Assert(equal, "InstanceofStub unexpected call site cache (cmp 1)");
-      __ cmpb(Operand(scratch, 1), kCmpEdiImmediateByte2);
+      __ cmpb(Operand(scratch, 1), kCmpEdiOperandByte2);
       __ Assert(equal, "InstanceofStub unexpected call site cache (cmp 2)");
     }
-    __ mov(Operand(scratch, kDeltaToCmpImmediate), map);
+    __ mov(scratch, Operand(scratch, kDeltaToCmpImmediate));
+    __ mov(Operand(scratch, 0), map);
   }
 
   // Loop through the prototype chain of the object looking for the function
   // prototype.
   __ mov(scratch, FieldOperand(map, Map::kPrototypeOffset));
   Label loop, is_instance, is_not_instance;
   __ bind(&loop);
   __ cmp(scratch, prototype);
   __ j(equal, &is_instance, Label::kNear);
   Factory* factory = masm->isolate()->factory();
@@ skipping 864 matching lines @@
 
 
 void StringHelper::GenerateHashInit(MacroAssembler* masm,
                                     Register hash,
                                     Register character,
                                     Register scratch) {
   // hash = (seed + character) + ((seed + character) << 10);
   if (Serializer::enabled()) {
     ExternalReference roots_array_start =
         ExternalReference::roots_array_start(masm->isolate());
-    __ mov(scratch, Immediate(Heap::kStringHashSeedRootIndex));
+    __ mov(scratch, Immediate(Heap::kHashSeedRootIndex));
     __ mov(scratch, Operand::StaticArray(scratch,
                                          times_pointer_size,
                                          roots_array_start));
     __ add(scratch, character);
     __ mov(hash, scratch);
     __ shl(scratch, 10);
     __ add(hash, scratch);
   } else {
-    int32_t seed = masm->isolate()->heap()->StringHashSeed();
+    int32_t seed = masm->isolate()->heap()->HashSeed();
     __ lea(scratch, Operand(character, seed));
     __ shl(scratch, 10);
     __ lea(hash, Operand(scratch, character, times_1, seed));
   }
   // hash ^= hash >> 6;
   __ mov(scratch, hash);
   __ shr(scratch, 6);
   __ xor_(hash, scratch);
 }
 
@@ skipping 24 matching lines @@
   __ add(hash, scratch);
   // hash ^= hash >> 11;
   __ mov(scratch, hash);
   __ shr(scratch, 11);
   __ xor_(hash, scratch);
   // hash += hash << 15;
   __ mov(scratch, hash);
   __ shl(scratch, 15);
   __ add(hash, scratch);
 
-  uint32_t kHashShiftCutOffMask = (1 << (32 - String::kHashShift)) - 1;
-  __ and_(hash, kHashShiftCutOffMask);
+  __ and_(hash, String::kHashBitMask);
 
   // if (hash == 0) hash = 27;
   Label hash_not_zero;
-  __ test(hash, hash);
   __ j(not_zero, &hash_not_zero, Label::kNear);
-  __ mov(hash, Immediate(27));
+  __ mov(hash, Immediate(StringHasher::kZeroHash));
   __ bind(&hash_not_zero);
 }
 
 
 void SubStringStub::Generate(MacroAssembler* masm) {
   Label runtime;
 
   // Stack frame on entry.
   //  esp[0]: return address
   //  esp[4]: to
@@ skipping 1234 matching lines @@
                                  false);
   __ pop(edx);
   __ ret(0);
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32