diff options
Diffstat (limited to 'src/3rdparty/v8/src/ia32/ic-ia32.cc')
| -rw-r--r-- | src/3rdparty/v8/src/ia32/ic-ia32.cc | 1675 |
1 files changed, 0 insertions, 1675 deletions
diff --git a/src/3rdparty/v8/src/ia32/ic-ia32.cc b/src/3rdparty/v8/src/ia32/ic-ia32.cc deleted file mode 100644 index 428d830..0000000 --- a/src/3rdparty/v8/src/ia32/ic-ia32.cc +++ /dev/null @@ -1,1675 +0,0 @@ -// Copyright 2012 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 -// with the distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived -// from this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -#include "v8.h" - -#if defined(V8_TARGET_ARCH_IA32) - -#include "codegen.h" -#include "ic-inl.h" -#include "runtime.h" -#include "stub-cache.h" - -namespace v8 { -namespace internal { - -// ---------------------------------------------------------------------------- -// Static IC stub generators. -// - -#define __ ACCESS_MASM(masm) - - -static void GenerateGlobalInstanceTypeCheck(MacroAssembler* masm, - Register type, - Label* global_object) { - // Register usage: - // type: holds the receiver instance type on entry. - __ cmp(type, JS_GLOBAL_OBJECT_TYPE); - __ j(equal, global_object); - __ cmp(type, JS_BUILTINS_OBJECT_TYPE); - __ j(equal, global_object); - __ cmp(type, JS_GLOBAL_PROXY_TYPE); - __ j(equal, global_object); -} - - -// Generated code falls through if the receiver is a regular non-global -// JS object with slow properties and no interceptors. -static void GenerateStringDictionaryReceiverCheck(MacroAssembler* masm, - Register receiver, - Register r0, - Register r1, - Label* miss) { - // Register usage: - // receiver: holds the receiver on entry and is unchanged. - // r0: used to hold receiver instance type. - // Holds the property dictionary on fall through. - // r1: used to hold receivers map. - - // Check that the receiver isn't a smi. - __ JumpIfSmi(receiver, miss); - - // Check that the receiver is a valid JS object. - __ mov(r1, FieldOperand(receiver, HeapObject::kMapOffset)); - __ movzx_b(r0, FieldOperand(r1, Map::kInstanceTypeOffset)); - __ cmp(r0, FIRST_SPEC_OBJECT_TYPE); - __ j(below, miss); - - // If this assert fails, we have to check upper bound too. - STATIC_ASSERT(LAST_TYPE == LAST_SPEC_OBJECT_TYPE); - - GenerateGlobalInstanceTypeCheck(masm, r0, miss); - - // Check for non-global object that requires access check. - __ test_b(FieldOperand(r1, Map::kBitFieldOffset), - (1 << Map::kIsAccessCheckNeeded) | - (1 << Map::kHasNamedInterceptor)); - __ j(not_zero, miss); - - __ mov(r0, FieldOperand(receiver, JSObject::kPropertiesOffset)); - __ CheckMap(r0, FACTORY->hash_table_map(), miss, DONT_DO_SMI_CHECK); -} - - -// Helper function used to load a property from a dictionary backing -// storage. This function may fail to load a property even though it is -// in the dictionary, so code at miss_label must always call a backup -// property load that is complete. This function is safe to call if -// name is not internalized, and will jump to the miss_label in that -// case. The generated code assumes that the receiver has slow -// properties, is not a global object and does not have interceptors. -static void GenerateDictionaryLoad(MacroAssembler* masm, - Label* miss_label, - Register elements, - Register name, - Register r0, - Register r1, - Register result) { - // Register use: - // - // elements - holds the property dictionary on entry and is unchanged. - // - // name - holds the name of the property on entry and is unchanged. - // - // Scratch registers: - // - // r0 - used for the index into the property dictionary - // - // r1 - used to hold the capacity of the property dictionary. - // - // result - holds the result on exit. - - Label done; - - // Probe the dictionary. - StringDictionaryLookupStub::GeneratePositiveLookup(masm, - miss_label, - &done, - elements, - name, - r0, - r1); - - // If probing finds an entry in the dictionary, r0 contains the - // index into the dictionary. Check that the value is a normal - // property. - __ bind(&done); - const int kElementsStartOffset = - StringDictionary::kHeaderSize + - StringDictionary::kElementsStartIndex * kPointerSize; - const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize; - __ test(Operand(elements, r0, times_4, kDetailsOffset - kHeapObjectTag), - Immediate(PropertyDetails::TypeField::kMask << kSmiTagSize)); - __ j(not_zero, miss_label); - - // Get the value at the masked, scaled index. - const int kValueOffset = kElementsStartOffset + kPointerSize; - __ mov(result, Operand(elements, r0, times_4, kValueOffset - kHeapObjectTag)); -} - - -// Helper function used to store a property to a dictionary backing -// storage. This function may fail to store a property eventhough it -// is in the dictionary, so code at miss_label must always call a -// backup property store that is complete. This function is safe to -// call if name is not internalized, and will jump to the miss_label in -// that case. The generated code assumes that the receiver has slow -// properties, is not a global object and does not have interceptors. -static void GenerateDictionaryStore(MacroAssembler* masm, - Label* miss_label, - Register elements, - Register name, - Register value, - Register r0, - Register r1) { - // Register use: - // - // elements - holds the property dictionary on entry and is clobbered. - // - // name - holds the name of the property on entry and is unchanged. - // - // value - holds the value to store and is unchanged. - // - // r0 - used for index into the property dictionary and is clobbered. - // - // r1 - used to hold the capacity of the property dictionary and is clobbered. - Label done; - - - // Probe the dictionary. - StringDictionaryLookupStub::GeneratePositiveLookup(masm, - miss_label, - &done, - elements, - name, - r0, - r1); - - // If probing finds an entry in the dictionary, r0 contains the - // index into the dictionary. Check that the value is a normal - // property that is not read only. - __ bind(&done); - const int kElementsStartOffset = - StringDictionary::kHeaderSize + - StringDictionary::kElementsStartIndex * kPointerSize; - const int kDetailsOffset = kElementsStartOffset + 2 * kPointerSize; - const int kTypeAndReadOnlyMask = - (PropertyDetails::TypeField::kMask | - PropertyDetails::AttributesField::encode(READ_ONLY)) << kSmiTagSize; - __ test(Operand(elements, r0, times_4, kDetailsOffset - kHeapObjectTag), - Immediate(kTypeAndReadOnlyMask)); - __ j(not_zero, miss_label); - - // Store the value at the masked, scaled index. - const int kValueOffset = kElementsStartOffset + kPointerSize; - __ lea(r0, Operand(elements, r0, times_4, kValueOffset - kHeapObjectTag)); - __ mov(Operand(r0, 0), value); - - // Update write barrier. Make sure not to clobber the value. - __ mov(r1, value); - __ RecordWrite(elements, r0, r1, kDontSaveFPRegs); -} - - -// Checks the receiver for special cases (value type, slow case bits). -// Falls through for regular JS object. -static void GenerateKeyedLoadReceiverCheck(MacroAssembler* masm, - Register receiver, - Register map, - int interceptor_bit, - Label* slow) { - // Register use: - // receiver - holds the receiver and is unchanged. - // Scratch registers: - // map - used to hold the map of the receiver. - - // Check that the object isn't a smi. - __ JumpIfSmi(receiver, slow); - - // Get the map of the receiver. - __ mov(map, FieldOperand(receiver, HeapObject::kMapOffset)); - - // Check bit field. - __ test_b(FieldOperand(map, Map::kBitFieldOffset), - (1 << Map::kIsAccessCheckNeeded) | (1 << interceptor_bit)); - __ j(not_zero, slow); - // Check that the object is some kind of JS object EXCEPT JS Value type. - // In the case that the object is a value-wrapper object, - // we enter the runtime system to make sure that indexing - // into string objects works as intended. - ASSERT(JS_OBJECT_TYPE > JS_VALUE_TYPE); - - __ CmpInstanceType(map, JS_OBJECT_TYPE); - __ j(below, slow); -} - - -// Loads an indexed element from a fast case array. -// If not_fast_array is NULL, doesn't perform the elements map check. -static void GenerateFastArrayLoad(MacroAssembler* masm, - Register receiver, - Register key, - Register scratch, - Register result, - Label* not_fast_array, - Label* out_of_range) { - // Register use: - // receiver - holds the receiver and is unchanged. - // key - holds the key and is unchanged (must be a smi). - // Scratch registers: - // scratch - used to hold elements of the receiver and the loaded value. - // result - holds the result on exit if the load succeeds and - // we fall through. - - __ mov(scratch, FieldOperand(receiver, JSObject::kElementsOffset)); - if (not_fast_array != NULL) { - // Check that the object is in fast mode and writable. - __ CheckMap(scratch, - FACTORY->fixed_array_map(), - not_fast_array, - DONT_DO_SMI_CHECK); - } else { - __ AssertFastElements(scratch); - } - // Check that the key (index) is within bounds. - __ cmp(key, FieldOperand(scratch, FixedArray::kLengthOffset)); - __ j(above_equal, out_of_range); - // Fast case: Do the load. - STATIC_ASSERT((kPointerSize == 4) && (kSmiTagSize == 1) && (kSmiTag == 0)); - __ mov(scratch, FieldOperand(scratch, key, times_2, FixedArray::kHeaderSize)); - __ cmp(scratch, Immediate(FACTORY->the_hole_value())); - // In case the loaded value is the_hole we have to consult GetProperty - // to ensure the prototype chain is searched. - __ j(equal, out_of_range); - if (!result.is(scratch)) { - __ mov(result, scratch); - } -} - - -// Checks whether a key is an array index string or an internalized string. -// Falls through if the key is an internalized string. -static void GenerateKeyStringCheck(MacroAssembler* masm, - Register key, - Register map, - Register hash, - Label* index_string, - Label* not_internalized) { - // Register use: - // key - holds the key and is unchanged. Assumed to be non-smi. - // Scratch registers: - // map - used to hold the map of the key. - // hash - used to hold the hash of the key. - __ CmpObjectType(key, FIRST_NONSTRING_TYPE, map); - __ j(above_equal, not_internalized); - - // Is the string an array index, with cached numeric value? - __ mov(hash, FieldOperand(key, String::kHashFieldOffset)); - __ test(hash, Immediate(String::kContainsCachedArrayIndexMask)); - __ j(zero, index_string); - - // Is the string internalized? - STATIC_ASSERT(kInternalizedTag != 0); - __ test_b(FieldOperand(map, Map::kInstanceTypeOffset), kIsInternalizedMask); - __ j(zero, not_internalized); -} - - -static Operand GenerateMappedArgumentsLookup(MacroAssembler* masm, - Register object, - Register key, - Register scratch1, - Register scratch2, - Label* unmapped_case, - Label* slow_case) { - Heap* heap = masm->isolate()->heap(); - Factory* factory = masm->isolate()->factory(); - - // Check that the receiver is a JSObject. Because of the elements - // map check later, we do not need to check for interceptors or - // whether it requires access checks. - __ JumpIfSmi(object, slow_case); - // Check that the object is some kind of JSObject. - __ CmpObjectType(object, FIRST_JS_RECEIVER_TYPE, scratch1); - __ j(below, slow_case); - - // Check that the key is a positive smi. - __ test(key, Immediate(0x80000001)); - __ j(not_zero, slow_case); - - // Load the elements into scratch1 and check its map. - Handle<Map> arguments_map(heap->non_strict_arguments_elements_map()); - __ mov(scratch1, FieldOperand(object, JSObject::kElementsOffset)); - __ CheckMap(scratch1, arguments_map, slow_case, DONT_DO_SMI_CHECK); - - // Check if element is in the range of mapped arguments. If not, jump - // to the unmapped lookup with the parameter map in scratch1. - __ mov(scratch2, FieldOperand(scratch1, FixedArray::kLengthOffset)); - __ sub(scratch2, Immediate(Smi::FromInt(2))); - __ cmp(key, scratch2); - __ j(above_equal, unmapped_case); - - // Load element index and check whether it is the hole. - const int kHeaderSize = FixedArray::kHeaderSize + 2 * kPointerSize; - __ mov(scratch2, FieldOperand(scratch1, - key, - times_half_pointer_size, - kHeaderSize)); - __ cmp(scratch2, factory->the_hole_value()); - __ j(equal, unmapped_case); - - // Load value from context and return it. We can reuse scratch1 because - // we do not jump to the unmapped lookup (which requires the parameter - // map in scratch1). - const int kContextOffset = FixedArray::kHeaderSize; - __ mov(scratch1, FieldOperand(scratch1, kContextOffset)); - return FieldOperand(scratch1, - scratch2, - times_half_pointer_size, - Context::kHeaderSize); -} - - -static Operand GenerateUnmappedArgumentsLookup(MacroAssembler* masm, - Register key, - Register parameter_map, - Register scratch, - Label* slow_case) { - // Element is in arguments backing store, which is referenced by the - // second element of the parameter_map. - const int kBackingStoreOffset = FixedArray::kHeaderSize + kPointerSize; - Register backing_store = parameter_map; - __ mov(backing_store, FieldOperand(parameter_map, kBackingStoreOffset)); - Handle<Map> fixed_array_map(masm->isolate()->heap()->fixed_array_map()); - __ CheckMap(backing_store, fixed_array_map, slow_case, DONT_DO_SMI_CHECK); - __ mov(scratch, FieldOperand(backing_store, FixedArray::kLengthOffset)); - __ cmp(key, scratch); - __ j(greater_equal, slow_case); - return FieldOperand(backing_store, - key, - times_half_pointer_size, - FixedArray::kHeaderSize); -} - - -void KeyedLoadIC::GenerateGeneric(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label slow, check_string, index_smi, index_string, property_array_property; - Label probe_dictionary, check_number_dictionary; - - // Check that the key is a smi. - __ JumpIfNotSmi(ecx, &check_string); - __ bind(&index_smi); - // Now the key is known to be a smi. This place is also jumped to from - // where a numeric string is converted to a smi. - - GenerateKeyedLoadReceiverCheck( - masm, edx, eax, Map::kHasIndexedInterceptor, &slow); - - // Check the receiver's map to see if it has fast elements. - __ CheckFastElements(eax, &check_number_dictionary); - - GenerateFastArrayLoad(masm, edx, ecx, eax, eax, NULL, &slow); - Isolate* isolate = masm->isolate(); - Counters* counters = isolate->counters(); - __ IncrementCounter(counters->keyed_load_generic_smi(), 1); - __ ret(0); - - __ bind(&check_number_dictionary); - __ mov(ebx, ecx); - __ SmiUntag(ebx); - __ mov(eax, FieldOperand(edx, JSObject::kElementsOffset)); - - // Check whether the elements is a number dictionary. - // edx: receiver - // ebx: untagged index - // ecx: key - // eax: elements - __ CheckMap(eax, - isolate->factory()->hash_table_map(), - &slow, - DONT_DO_SMI_CHECK); - Label slow_pop_receiver; - // Push receiver on the stack to free up a register for the dictionary - // probing. - __ push(edx); - __ LoadFromNumberDictionary(&slow_pop_receiver, eax, ecx, ebx, edx, edi, eax); - // Pop receiver before returning. - __ pop(edx); - __ ret(0); - - __ bind(&slow_pop_receiver); - // Pop the receiver from the stack and jump to runtime. - __ pop(edx); - - __ bind(&slow); - // Slow case: jump to runtime. - // edx: receiver - // ecx: key - __ IncrementCounter(counters->keyed_load_generic_slow(), 1); - GenerateRuntimeGetProperty(masm); - - __ bind(&check_string); - GenerateKeyStringCheck(masm, ecx, eax, ebx, &index_string, &slow); - - GenerateKeyedLoadReceiverCheck( - masm, edx, eax, Map::kHasNamedInterceptor, &slow); - - // If the receiver is a fast-case object, check the keyed lookup - // cache. Otherwise probe the dictionary. - __ mov(ebx, FieldOperand(edx, JSObject::kPropertiesOffset)); - __ cmp(FieldOperand(ebx, HeapObject::kMapOffset), - Immediate(isolate->factory()->hash_table_map())); - __ j(equal, &probe_dictionary); - - // The receiver's map is still in eax, compute the keyed lookup cache hash - // based on 32 bits of the map pointer and the string hash. - if (FLAG_debug_code) { - __ cmp(eax, FieldOperand(edx, HeapObject::kMapOffset)); - __ Check(equal, "Map is no longer in eax."); - } - __ mov(ebx, eax); // Keep the map around for later. - __ shr(eax, KeyedLookupCache::kMapHashShift); - __ mov(edi, FieldOperand(ecx, String::kHashFieldOffset)); - __ shr(edi, String::kHashShift); - __ xor_(eax, edi); - __ and_(eax, KeyedLookupCache::kCapacityMask & KeyedLookupCache::kHashMask); - - // Load the key (consisting of map and internalized string) from the cache and - // check for match. - Label load_in_object_property; - static const int kEntriesPerBucket = KeyedLookupCache::kEntriesPerBucket; - Label hit_on_nth_entry[kEntriesPerBucket]; - ExternalReference cache_keys = - ExternalReference::keyed_lookup_cache_keys(masm->isolate()); - - for (int i = 0; i < kEntriesPerBucket - 1; i++) { - Label try_next_entry; - __ mov(edi, eax); - __ shl(edi, kPointerSizeLog2 + 1); - if (i != 0) { - __ add(edi, Immediate(kPointerSize * i * 2)); - } - __ cmp(ebx, Operand::StaticArray(edi, times_1, cache_keys)); - __ j(not_equal, &try_next_entry); - __ add(edi, Immediate(kPointerSize)); - __ cmp(ecx, Operand::StaticArray(edi, times_1, cache_keys)); - __ j(equal, &hit_on_nth_entry[i]); - __ bind(&try_next_entry); - } - - __ lea(edi, Operand(eax, 1)); - __ shl(edi, kPointerSizeLog2 + 1); - __ add(edi, Immediate(kPointerSize * (kEntriesPerBucket - 1) * 2)); - __ cmp(ebx, Operand::StaticArray(edi, times_1, cache_keys)); - __ j(not_equal, &slow); - __ add(edi, Immediate(kPointerSize)); - __ cmp(ecx, Operand::StaticArray(edi, times_1, cache_keys)); - __ j(not_equal, &slow); - - // Get field offset. - // edx : receiver - // ebx : receiver's map - // ecx : key - // eax : lookup cache index - ExternalReference cache_field_offsets = - ExternalReference::keyed_lookup_cache_field_offsets(masm->isolate()); - - // Hit on nth entry. - for (int i = kEntriesPerBucket - 1; i >= 0; i--) { - __ bind(&hit_on_nth_entry[i]); - if (i != 0) { - __ add(eax, Immediate(i)); - } - __ mov(edi, - Operand::StaticArray(eax, times_pointer_size, cache_field_offsets)); - __ movzx_b(eax, FieldOperand(ebx, Map::kInObjectPropertiesOffset)); - __ sub(edi, eax); - __ j(above_equal, &property_array_property); - if (i != 0) { - __ jmp(&load_in_object_property); - } - } - - // Load in-object property. - __ bind(&load_in_object_property); - __ movzx_b(eax, FieldOperand(ebx, Map::kInstanceSizeOffset)); - __ add(eax, edi); - __ mov(eax, FieldOperand(edx, eax, times_pointer_size, 0)); - __ IncrementCounter(counters->keyed_load_generic_lookup_cache(), 1); - __ ret(0); - - // Load property array property. - __ bind(&property_array_property); - __ mov(eax, FieldOperand(edx, JSObject::kPropertiesOffset)); - __ mov(eax, FieldOperand(eax, edi, times_pointer_size, - FixedArray::kHeaderSize)); - __ IncrementCounter(counters->keyed_load_generic_lookup_cache(), 1); - __ ret(0); - - // Do a quick inline probe of the receiver's dictionary, if it - // exists. - __ bind(&probe_dictionary); - - __ mov(eax, FieldOperand(edx, JSObject::kMapOffset)); - __ movzx_b(eax, FieldOperand(eax, Map::kInstanceTypeOffset)); - GenerateGlobalInstanceTypeCheck(masm, eax, &slow); - - GenerateDictionaryLoad(masm, &slow, ebx, ecx, eax, edi, eax); - __ IncrementCounter(counters->keyed_load_generic_symbol(), 1); - __ ret(0); - - __ bind(&index_string); - __ IndexFromHash(ebx, ecx); - // Now jump to the place where smi keys are handled. - __ jmp(&index_smi); -} - - -void KeyedLoadIC::GenerateString(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : key (index) - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label miss; - - Register receiver = edx; - Register index = ecx; - Register scratch = ebx; - Register result = eax; - - StringCharAtGenerator char_at_generator(receiver, - index, - scratch, - result, - &miss, // When not a string. - &miss, // When not a number. - &miss, // When index out of range. - STRING_INDEX_IS_ARRAY_INDEX); - char_at_generator.GenerateFast(masm); - __ ret(0); - - StubRuntimeCallHelper call_helper; - char_at_generator.GenerateSlow(masm, call_helper); - - __ bind(&miss); - GenerateMiss(masm, MISS); -} - - -void KeyedLoadIC::GenerateIndexedInterceptor(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label slow; - - // Check that the receiver isn't a smi. - __ JumpIfSmi(edx, &slow); - - // Check that the key is an array index, that is Uint32. - __ test(ecx, Immediate(kSmiTagMask | kSmiSignMask)); - __ j(not_zero, &slow); - - // Get the map of the receiver. - __ mov(eax, FieldOperand(edx, HeapObject::kMapOffset)); - - // Check that it has indexed interceptor and access checks - // are not enabled for this object. - __ movzx_b(eax, FieldOperand(eax, Map::kBitFieldOffset)); - __ and_(eax, Immediate(kSlowCaseBitFieldMask)); - __ cmp(eax, Immediate(1 << Map::kHasIndexedInterceptor)); - __ j(not_zero, &slow); - - // Everything is fine, call runtime. - __ pop(eax); - __ push(edx); // receiver - __ push(ecx); // key - __ push(eax); // return address - - // Perform tail call to the entry. - ExternalReference ref = - ExternalReference(IC_Utility(kKeyedLoadPropertyWithInterceptor), - masm->isolate()); - __ TailCallExternalReference(ref, 2, 1); - - __ bind(&slow); - GenerateMiss(masm, MISS); -} - - -void KeyedLoadIC::GenerateNonStrictArguments(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label slow, notin; - Factory* factory = masm->isolate()->factory(); - Operand mapped_location = - GenerateMappedArgumentsLookup(masm, edx, ecx, ebx, eax, ¬in, &slow); - __ mov(eax, mapped_location); - __ Ret(); - __ bind(¬in); - // The unmapped lookup expects that the parameter map is in ebx. - Operand unmapped_location = - GenerateUnmappedArgumentsLookup(masm, ecx, ebx, eax, &slow); - __ cmp(unmapped_location, factory->the_hole_value()); - __ j(equal, &slow); - __ mov(eax, unmapped_location); - __ Ret(); - __ bind(&slow); - GenerateMiss(masm, MISS); -} - - -void KeyedStoreIC::GenerateNonStrictArguments(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label slow, notin; - Operand mapped_location = - GenerateMappedArgumentsLookup(masm, edx, ecx, ebx, edi, ¬in, &slow); - __ mov(mapped_location, eax); - __ lea(ecx, mapped_location); - __ mov(edx, eax); - __ RecordWrite(ebx, ecx, edx, kDontSaveFPRegs); - __ Ret(); - __ bind(¬in); - // The unmapped lookup expects that the parameter map is in ebx. - Operand unmapped_location = - GenerateUnmappedArgumentsLookup(masm, ecx, ebx, edi, &slow); - __ mov(unmapped_location, eax); - __ lea(edi, unmapped_location); - __ mov(edx, eax); - __ RecordWrite(ebx, edi, edx, kDontSaveFPRegs); - __ Ret(); - __ bind(&slow); - GenerateMiss(masm, MISS); -} - - -static void KeyedStoreGenerateGenericHelper( - MacroAssembler* masm, - Label* fast_object, - Label* fast_double, - Label* slow, - KeyedStoreCheckMap check_map, - KeyedStoreIncrementLength increment_length) { - Label transition_smi_elements; - Label finish_object_store, non_double_value, transition_double_elements; - Label fast_double_without_map_check; - // eax: value - // ecx: key (a smi) - // edx: receiver - // ebx: FixedArray receiver->elements - // edi: receiver map - // Fast case: Do the store, could either Object or double. - __ bind(fast_object); - if (check_map == kCheckMap) { - __ mov(edi, FieldOperand(ebx, HeapObject::kMapOffset)); - __ cmp(edi, masm->isolate()->factory()->fixed_array_map()); - __ j(not_equal, fast_double); - } - // Smi stores don't require further checks. - Label non_smi_value; - __ JumpIfNotSmi(eax, &non_smi_value); - if (increment_length == kIncrementLength) { - // Add 1 to receiver->length. - __ add(FieldOperand(edx, JSArray::kLengthOffset), - Immediate(Smi::FromInt(1))); - } - // It's irrelevant whether array is smi-only or not when writing a smi. - __ mov(CodeGenerator::FixedArrayElementOperand(ebx, ecx), eax); - __ ret(0); - - __ bind(&non_smi_value); - // Escape to elements kind transition case. - __ mov(edi, FieldOperand(edx, HeapObject::kMapOffset)); - __ CheckFastObjectElements(edi, &transition_smi_elements); - - // Fast elements array, store the value to the elements backing store. - __ bind(&finish_object_store); - if (increment_length == kIncrementLength) { - // Add 1 to receiver->length. - __ add(FieldOperand(edx, JSArray::kLengthOffset), - Immediate(Smi::FromInt(1))); - } - __ mov(CodeGenerator::FixedArrayElementOperand(ebx, ecx), eax); - // Update write barrier for the elements array address. - __ mov(edx, eax); // Preserve the value which is returned. - __ RecordWriteArray( - ebx, edx, ecx, kDontSaveFPRegs, EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); - __ ret(0); - - __ bind(fast_double); - if (check_map == kCheckMap) { - // Check for fast double array case. If this fails, call through to the - // runtime. - __ cmp(edi, masm->isolate()->factory()->fixed_double_array_map()); - __ j(not_equal, slow); - // If the value is a number, store it as a double in the FastDoubleElements - // array. - } - __ bind(&fast_double_without_map_check); - __ StoreNumberToDoubleElements(eax, ebx, ecx, edi, xmm0, - &transition_double_elements, false); - if (increment_length == kIncrementLength) { - // Add 1 to receiver->length. - __ add(FieldOperand(edx, JSArray::kLengthOffset), - Immediate(Smi::FromInt(1))); - } - __ ret(0); - - __ bind(&transition_smi_elements); - __ mov(ebx, FieldOperand(edx, HeapObject::kMapOffset)); - - // Transition the array appropriately depending on the value type. - __ CheckMap(eax, - masm->isolate()->factory()->heap_number_map(), - &non_double_value, - DONT_DO_SMI_CHECK); - - // Value is a double. Transition FAST_SMI_ELEMENTS -> FAST_DOUBLE_ELEMENTS - // and complete the store. - __ LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS, - FAST_DOUBLE_ELEMENTS, - ebx, - edi, - slow); - AllocationSiteMode mode = AllocationSiteInfo::GetMode(FAST_SMI_ELEMENTS, - FAST_DOUBLE_ELEMENTS); - ElementsTransitionGenerator::GenerateSmiToDouble(masm, mode, slow); - __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); - __ jmp(&fast_double_without_map_check); - - __ bind(&non_double_value); - // Value is not a double, FAST_SMI_ELEMENTS -> FAST_ELEMENTS - __ LoadTransitionedArrayMapConditional(FAST_SMI_ELEMENTS, - FAST_ELEMENTS, - ebx, - edi, - slow); - mode = AllocationSiteInfo::GetMode(FAST_SMI_ELEMENTS, FAST_ELEMENTS); - ElementsTransitionGenerator::GenerateMapChangeElementsTransition(masm, mode, - slow); - __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); - __ jmp(&finish_object_store); - - __ bind(&transition_double_elements); - // Elements are FAST_DOUBLE_ELEMENTS, but value is an Object that's not a - // HeapNumber. Make sure that the receiver is a Array with FAST_ELEMENTS and - // transition array from FAST_DOUBLE_ELEMENTS to FAST_ELEMENTS - __ mov(ebx, FieldOperand(edx, HeapObject::kMapOffset)); - __ LoadTransitionedArrayMapConditional(FAST_DOUBLE_ELEMENTS, - FAST_ELEMENTS, - ebx, - edi, - slow); - mode = AllocationSiteInfo::GetMode(FAST_DOUBLE_ELEMENTS, FAST_ELEMENTS); - ElementsTransitionGenerator::GenerateDoubleToObject(masm, mode, slow); - __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); - __ jmp(&finish_object_store); -} - - -void KeyedStoreIC::GenerateGeneric(MacroAssembler* masm, - StrictModeFlag strict_mode) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label slow, fast_object, fast_object_grow; - Label fast_double, fast_double_grow; - Label array, extra, check_if_double_array; - - // Check that the object isn't a smi. - __ JumpIfSmi(edx, &slow); - // Get the map from the receiver. - __ mov(edi, FieldOperand(edx, HeapObject::kMapOffset)); - // Check that the receiver does not require access checks. We need - // to do this because this generic stub does not perform map checks. - __ test_b(FieldOperand(edi, Map::kBitFieldOffset), - 1 << Map::kIsAccessCheckNeeded); - __ j(not_zero, &slow); - // Check that the key is a smi. - __ JumpIfNotSmi(ecx, &slow); - __ CmpInstanceType(edi, JS_ARRAY_TYPE); - __ j(equal, &array); - // Check that the object is some kind of JSObject. - __ CmpInstanceType(edi, FIRST_JS_OBJECT_TYPE); - __ j(below, &slow); - - // Object case: Check key against length in the elements array. - // eax: value - // edx: JSObject - // ecx: key (a smi) - // edi: receiver map - __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); - // Check array bounds. Both the key and the length of FixedArray are smis. - __ cmp(ecx, FieldOperand(ebx, FixedArray::kLengthOffset)); - __ j(below, &fast_object); - - // Slow case: call runtime. - __ bind(&slow); - GenerateRuntimeSetProperty(masm, strict_mode); - - // Extra capacity case: Check if there is extra capacity to - // perform the store and update the length. Used for adding one - // element to the array by writing to array[array.length]. - __ bind(&extra); - // eax: value - // edx: receiver, a JSArray - // ecx: key, a smi. - // ebx: receiver->elements, a FixedArray - // edi: receiver map - // flags: compare (ecx, edx.length()) - // do not leave holes in the array: - __ j(not_equal, &slow); - __ cmp(ecx, FieldOperand(ebx, FixedArray::kLengthOffset)); - __ j(above_equal, &slow); - __ mov(edi, FieldOperand(ebx, HeapObject::kMapOffset)); - __ cmp(edi, masm->isolate()->factory()->fixed_array_map()); - __ j(not_equal, &check_if_double_array); - __ jmp(&fast_object_grow); - - __ bind(&check_if_double_array); - __ cmp(edi, masm->isolate()->factory()->fixed_double_array_map()); - __ j(not_equal, &slow); - __ jmp(&fast_double_grow); - - // Array case: Get the length and the elements array from the JS - // array. Check that the array is in fast mode (and writable); if it - // is the length is always a smi. - __ bind(&array); - // eax: value - // edx: receiver, a JSArray - // ecx: key, a smi. - // edi: receiver map - __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset)); - - // Check the key against the length in the array and fall through to the - // common store code. - __ cmp(ecx, FieldOperand(edx, JSArray::kLengthOffset)); // Compare smis. - __ j(above_equal, &extra); - - KeyedStoreGenerateGenericHelper(masm, &fast_object, &fast_double, - &slow, kCheckMap, kDontIncrementLength); - KeyedStoreGenerateGenericHelper(masm, &fast_object_grow, &fast_double_grow, - &slow, kDontCheckMap, kIncrementLength); -} - - -// The generated code does not accept smi keys. -// The generated code falls through if both probes miss. -void CallICBase::GenerateMonomorphicCacheProbe(MacroAssembler* masm, - int argc, - Code::Kind kind, - Code::ExtraICState extra_state) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- edx : receiver - // ----------------------------------- - Label number, non_number, non_string, boolean, probe, miss; - - // Probe the stub cache. - Code::Flags flags = Code::ComputeFlags(kind, - MONOMORPHIC, - extra_state, - Code::NORMAL, - argc); - Isolate* isolate = masm->isolate(); - isolate->stub_cache()->GenerateProbe(masm, flags, edx, ecx, ebx, eax); - - // If the stub cache probing failed, the receiver might be a value. - // For value objects, we use the map of the prototype objects for - // the corresponding JSValue for the cache and that is what we need - // to probe. - // - // Check for number. - __ JumpIfSmi(edx, &number); - __ CmpObjectType(edx, HEAP_NUMBER_TYPE, ebx); - __ j(not_equal, &non_number); - __ bind(&number); - StubCompiler::GenerateLoadGlobalFunctionPrototype( - masm, Context::NUMBER_FUNCTION_INDEX, edx); - __ jmp(&probe); - - // Check for string. - __ bind(&non_number); - __ CmpInstanceType(ebx, FIRST_NONSTRING_TYPE); - __ j(above_equal, &non_string); - StubCompiler::GenerateLoadGlobalFunctionPrototype( - masm, Context::STRING_FUNCTION_INDEX, edx); - __ jmp(&probe); - - // Check for boolean. - __ bind(&non_string); - __ cmp(edx, isolate->factory()->true_value()); - __ j(equal, &boolean); - __ cmp(edx, isolate->factory()->false_value()); - __ j(not_equal, &miss); - __ bind(&boolean); - StubCompiler::GenerateLoadGlobalFunctionPrototype( - masm, Context::BOOLEAN_FUNCTION_INDEX, edx); - - // Probe the stub cache for the value object. - __ bind(&probe); - isolate->stub_cache()->GenerateProbe(masm, flags, edx, ecx, ebx, no_reg); - __ bind(&miss); -} - - -static void GenerateFunctionTailCall(MacroAssembler* masm, - int argc, - Label* miss) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- edi : function - // -- esp[0] : return address - // -- esp[(argc - n) * 4] : arg[n] (zero-based) - // -- ... - // -- esp[(argc + 1) * 4] : receiver - // ----------------------------------- - - // Check that the result is not a smi. - __ JumpIfSmi(edi, miss); - - // Check that the value is a JavaScript function, fetching its map into eax. - __ CmpObjectType(edi, JS_FUNCTION_TYPE, eax); - __ j(not_equal, miss); - - // Invoke the function. - ParameterCount actual(argc); - __ InvokeFunction(edi, actual, JUMP_FUNCTION, - NullCallWrapper(), CALL_AS_METHOD); -} - - -// The generated code falls through if the call should be handled by runtime. -void CallICBase::GenerateNormal(MacroAssembler* masm, int argc) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- esp[0] : return address - // -- esp[(argc - n) * 4] : arg[n] (zero-based) - // -- ... - // -- esp[(argc + 1) * 4] : receiver - // ----------------------------------- - Label miss; - - // Get the receiver of the function from the stack; 1 ~ return address. - __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); - - GenerateStringDictionaryReceiverCheck(masm, edx, eax, ebx, &miss); - - // eax: elements - // Search the dictionary placing the result in edi. - GenerateDictionaryLoad(masm, &miss, eax, ecx, edi, ebx, edi); - GenerateFunctionTailCall(masm, argc, &miss); - - __ bind(&miss); -} - - -void CallICBase::GenerateMiss(MacroAssembler* masm, - int argc, - IC::UtilityId id, - Code::ExtraICState extra_state) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- esp[0] : return address - // -- esp[(argc - n) * 4] : arg[n] (zero-based) - // -- ... - // -- esp[(argc + 1) * 4] : receiver - // ----------------------------------- - - Counters* counters = masm->isolate()->counters(); - if (id == IC::kCallIC_Miss) { - __ IncrementCounter(counters->call_miss(), 1); - } else { - __ IncrementCounter(counters->keyed_call_miss(), 1); - } - - // Get the receiver of the function from the stack; 1 ~ return address. - __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); - - { - FrameScope scope(masm, StackFrame::INTERNAL); - - // Push the receiver and the name of the function. - __ push(edx); - __ push(ecx); - - // Call the entry. - CEntryStub stub(1); - __ mov(eax, Immediate(2)); - __ mov(ebx, Immediate(ExternalReference(IC_Utility(id), masm->isolate()))); - __ CallStub(&stub); - - // Move result to edi and exit the internal frame. - __ mov(edi, eax); - } - - // Check if the receiver is a global object of some sort. - // This can happen only for regular CallIC but not KeyedCallIC. - if (id == IC::kCallIC_Miss) { - Label invoke, global; - __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); // receiver - __ JumpIfSmi(edx, &invoke, Label::kNear); - __ mov(ebx, FieldOperand(edx, HeapObject::kMapOffset)); - __ movzx_b(ebx, FieldOperand(ebx, Map::kInstanceTypeOffset)); - __ cmp(ebx, JS_GLOBAL_OBJECT_TYPE); - __ j(equal, &global, Label::kNear); - __ cmp(ebx, JS_BUILTINS_OBJECT_TYPE); - __ j(not_equal, &invoke, Label::kNear); - - // Patch the receiver on the stack. - __ bind(&global); - __ mov(edx, FieldOperand(edx, GlobalObject::kGlobalReceiverOffset)); - __ mov(Operand(esp, (argc + 1) * kPointerSize), edx); - __ bind(&invoke); - } - - // Invoke the function. - CallKind call_kind = CallICBase::Contextual::decode(extra_state) - ? CALL_AS_FUNCTION - : CALL_AS_METHOD; - ParameterCount actual(argc); - __ InvokeFunction(edi, - actual, - JUMP_FUNCTION, - NullCallWrapper(), - call_kind); -} - - -void CallIC::GenerateMegamorphic(MacroAssembler* masm, - int argc, - Code::ExtraICState extra_state) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- esp[0] : return address - // -- esp[(argc - n) * 4] : arg[n] (zero-based) - // -- ... - // -- esp[(argc + 1) * 4] : receiver - // ----------------------------------- - - // Get the receiver of the function from the stack; 1 ~ return address. - __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); - CallICBase::GenerateMonomorphicCacheProbe(masm, argc, Code::CALL_IC, - extra_state); - - GenerateMiss(masm, argc, extra_state); -} - - -void KeyedCallIC::GenerateMegamorphic(MacroAssembler* masm, int argc) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- esp[0] : return address - // -- esp[(argc - n) * 4] : arg[n] (zero-based) - // -- ... - // -- esp[(argc + 1) * 4] : receiver - // ----------------------------------- - - // Get the receiver of the function from the stack; 1 ~ return address. - __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); - - Label do_call, slow_call, slow_load, slow_reload_receiver; - Label check_number_dictionary, check_string, lookup_monomorphic_cache; - Label index_smi, index_string; - - // Check that the key is a smi. - __ JumpIfNotSmi(ecx, &check_string); - - __ bind(&index_smi); - // Now the key is known to be a smi. This place is also jumped to from - // where a numeric string is converted to a smi. - - GenerateKeyedLoadReceiverCheck( - masm, edx, eax, Map::kHasIndexedInterceptor, &slow_call); - - GenerateFastArrayLoad( - masm, edx, ecx, eax, edi, &check_number_dictionary, &slow_load); - Isolate* isolate = masm->isolate(); - Counters* counters = isolate->counters(); - __ IncrementCounter(counters->keyed_call_generic_smi_fast(), 1); - - __ bind(&do_call); - // receiver in edx is not used after this point. - // ecx: key - // edi: function - GenerateFunctionTailCall(masm, argc, &slow_call); - - __ bind(&check_number_dictionary); - // eax: elements - // ecx: smi key - // Check whether the elements is a number dictionary. - __ CheckMap(eax, - isolate->factory()->hash_table_map(), - &slow_load, - DONT_DO_SMI_CHECK); - __ mov(ebx, ecx); - __ SmiUntag(ebx); - // ebx: untagged index - // Receiver in edx will be clobbered, need to reload it on miss. - __ LoadFromNumberDictionary( - &slow_reload_receiver, eax, ecx, ebx, edx, edi, edi); - __ IncrementCounter(counters->keyed_call_generic_smi_dict(), 1); - __ jmp(&do_call); - - __ bind(&slow_reload_receiver); - __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); - - __ bind(&slow_load); - // This branch is taken when calling KeyedCallIC_Miss is neither required - // nor beneficial. - __ IncrementCounter(counters->keyed_call_generic_slow_load(), 1); - - { - FrameScope scope(masm, StackFrame::INTERNAL); - __ push(ecx); // save the key - __ push(edx); // pass the receiver - __ push(ecx); // pass the key - __ CallRuntime(Runtime::kKeyedGetProperty, 2); - __ pop(ecx); // restore the key - // Leave the internal frame. - } - - __ mov(edi, eax); - __ jmp(&do_call); - - __ bind(&check_string); - GenerateKeyStringCheck(masm, ecx, eax, ebx, &index_string, &slow_call); - - // The key is known to be an internalized string. - // If the receiver is a regular JS object with slow properties then do - // a quick inline probe of the receiver's dictionary. - // Otherwise do the monomorphic cache probe. - GenerateKeyedLoadReceiverCheck( - masm, edx, eax, Map::kHasNamedInterceptor, &lookup_monomorphic_cache); - - __ mov(ebx, FieldOperand(edx, JSObject::kPropertiesOffset)); - __ CheckMap(ebx, - isolate->factory()->hash_table_map(), - &lookup_monomorphic_cache, - DONT_DO_SMI_CHECK); - - GenerateDictionaryLoad(masm, &slow_load, ebx, ecx, eax, edi, edi); - __ IncrementCounter(counters->keyed_call_generic_lookup_dict(), 1); - __ jmp(&do_call); - - __ bind(&lookup_monomorphic_cache); - __ IncrementCounter(counters->keyed_call_generic_lookup_cache(), 1); - CallICBase::GenerateMonomorphicCacheProbe(masm, argc, Code::KEYED_CALL_IC, - Code::kNoExtraICState); - // Fall through on miss. - - __ bind(&slow_call); - // This branch is taken if: - // - the receiver requires boxing or access check, - // - the key is neither smi nor an internalized string, - // - the value loaded is not a function, - // - there is hope that the runtime will create a monomorphic call stub - // that will get fetched next time. - __ IncrementCounter(counters->keyed_call_generic_slow(), 1); - GenerateMiss(masm, argc); - - __ bind(&index_string); - __ IndexFromHash(ebx, ecx); - // Now jump to the place where smi keys are handled. - __ jmp(&index_smi); -} - - -void KeyedCallIC::GenerateNonStrictArguments(MacroAssembler* masm, - int argc) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- esp[0] : return address - // -- esp[(argc - n) * 4] : arg[n] (zero-based) - // -- ... - // -- esp[(argc + 1) * 4] : receiver - // ----------------------------------- - Label slow, notin; - Factory* factory = masm->isolate()->factory(); - __ mov(edx, Operand(esp, (argc + 1) * kPointerSize)); - Operand mapped_location = - GenerateMappedArgumentsLookup(masm, edx, ecx, ebx, eax, ¬in, &slow); - __ mov(edi, mapped_location); - GenerateFunctionTailCall(masm, argc, &slow); - __ bind(¬in); - // The unmapped lookup expects that the parameter map is in ebx. - Operand unmapped_location = - GenerateUnmappedArgumentsLookup(masm, ecx, ebx, eax, &slow); - __ cmp(unmapped_location, factory->the_hole_value()); - __ j(equal, &slow); - __ mov(edi, unmapped_location); - GenerateFunctionTailCall(masm, argc, &slow); - __ bind(&slow); - GenerateMiss(masm, argc); -} - - -void KeyedCallIC::GenerateNormal(MacroAssembler* masm, int argc) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- esp[0] : return address - // -- esp[(argc - n) * 4] : arg[n] (zero-based) - // -- ... - // -- esp[(argc + 1) * 4] : receiver - // ----------------------------------- - - // Check if the name is a string. - Label miss; - __ JumpIfSmi(ecx, &miss); - Condition cond = masm->IsObjectStringType(ecx, eax, eax); - __ j(NegateCondition(cond), &miss); - CallICBase::GenerateNormal(masm, argc); - __ bind(&miss); - GenerateMiss(masm, argc); -} - - -void LoadIC::GenerateMegamorphic(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - // Probe the stub cache. - Code::Flags flags = Code::ComputeFlags( - Code::LOAD_IC, MONOMORPHIC, Code::HANDLER_FRAGMENT); - Isolate::Current()->stub_cache()->GenerateProbe( - masm, flags, edx, ecx, ebx, eax); - - // Cache miss: Jump to runtime. - GenerateMiss(masm); -} - - -void LoadIC::GenerateNormal(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - Label miss; - - GenerateStringDictionaryReceiverCheck(masm, edx, eax, ebx, &miss); - - // eax: elements - // Search the dictionary placing the result in eax. - GenerateDictionaryLoad(masm, &miss, eax, ecx, edi, ebx, eax); - __ ret(0); - - // Cache miss: Jump to runtime. - __ bind(&miss); - GenerateMiss(masm); -} - - -void LoadIC::GenerateMiss(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : name - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ IncrementCounter(masm->isolate()->counters()->load_miss(), 1); - - __ pop(ebx); - __ push(edx); // receiver - __ push(ecx); // name - __ push(ebx); // return address - - // Perform tail call to the entry. - ExternalReference ref = - ExternalReference(IC_Utility(kLoadIC_Miss), masm->isolate()); - __ TailCallExternalReference(ref, 2, 1); -} - - -void KeyedLoadIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) { - // ----------- S t a t e ------------- - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ IncrementCounter(masm->isolate()->counters()->keyed_load_miss(), 1); - - __ pop(ebx); - __ push(edx); // receiver - __ push(ecx); // name - __ push(ebx); // return address - - // Perform tail call to the entry. - ExternalReference ref = miss_mode == MISS_FORCE_GENERIC - ? ExternalReference(IC_Utility(kKeyedLoadIC_MissForceGeneric), - masm->isolate()) - : ExternalReference(IC_Utility(kKeyedLoadIC_Miss), masm->isolate()); - __ TailCallExternalReference(ref, 2, 1); -} - - -void KeyedLoadIC::GenerateRuntimeGetProperty(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ pop(ebx); - __ push(edx); // receiver - __ push(ecx); // name - __ push(ebx); // return address - - // Perform tail call to the entry. - __ TailCallRuntime(Runtime::kKeyedGetProperty, 2, 1); -} - - -void StoreIC::GenerateMegamorphic(MacroAssembler* masm, - StrictModeFlag strict_mode) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : name - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - Code::Flags flags = - Code::ComputeFlags(Code::STORE_IC, MONOMORPHIC, strict_mode); - Isolate::Current()->stub_cache()->GenerateProbe(masm, flags, edx, ecx, ebx, - no_reg); - - // Cache miss: Jump to runtime. - GenerateMiss(masm); -} - - -void StoreIC::GenerateMiss(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : name - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ pop(ebx); - __ push(edx); - __ push(ecx); - __ push(eax); - __ push(ebx); - - // Perform tail call to the entry. - ExternalReference ref = - ExternalReference(IC_Utility(kStoreIC_Miss), masm->isolate()); - __ TailCallExternalReference(ref, 3, 1); -} - - -void StoreIC::GenerateNormal(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : name - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - Label miss, restore_miss; - - GenerateStringDictionaryReceiverCheck(masm, edx, ebx, edi, &miss); - - // A lot of registers are needed for storing to slow case - // objects. Push and restore receiver but rely on - // GenerateDictionaryStore preserving the value and name. - __ push(edx); - GenerateDictionaryStore(masm, &restore_miss, ebx, ecx, eax, edx, edi); - __ Drop(1); - Counters* counters = masm->isolate()->counters(); - __ IncrementCounter(counters->store_normal_hit(), 1); - __ ret(0); - - __ bind(&restore_miss); - __ pop(edx); - - __ bind(&miss); - __ IncrementCounter(counters->store_normal_miss(), 1); - GenerateMiss(masm); -} - - -void StoreIC::GenerateGlobalProxy(MacroAssembler* masm, - StrictModeFlag strict_mode) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : name - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - __ pop(ebx); - __ push(edx); - __ push(ecx); - __ push(eax); - __ push(Immediate(Smi::FromInt(NONE))); // PropertyAttributes - __ push(Immediate(Smi::FromInt(strict_mode))); - __ push(ebx); // return address - - // Do tail-call to runtime routine. - __ TailCallRuntime(Runtime::kSetProperty, 5, 1); -} - - -void KeyedStoreIC::GenerateRuntimeSetProperty(MacroAssembler* masm, - StrictModeFlag strict_mode) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ pop(ebx); - __ push(edx); - __ push(ecx); - __ push(eax); - __ push(Immediate(Smi::FromInt(NONE))); // PropertyAttributes - __ push(Immediate(Smi::FromInt(strict_mode))); // Strict mode. - __ push(ebx); // return address - - // Do tail-call to runtime routine. - __ TailCallRuntime(Runtime::kSetProperty, 5, 1); -} - - -void KeyedStoreIC::GenerateMiss(MacroAssembler* masm, ICMissMode miss_mode) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ pop(ebx); - __ push(edx); - __ push(ecx); - __ push(eax); - __ push(ebx); - - // Do tail-call to runtime routine. - ExternalReference ref = miss_mode == MISS_FORCE_GENERIC - ? ExternalReference(IC_Utility(kKeyedStoreIC_MissForceGeneric), - masm->isolate()) - : ExternalReference(IC_Utility(kKeyedStoreIC_Miss), masm->isolate()); - __ TailCallExternalReference(ref, 3, 1); -} - - -void KeyedStoreIC::GenerateSlow(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- eax : value - // -- ecx : key - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - - __ pop(ebx); - __ push(edx); - __ push(ecx); - __ push(eax); - __ push(ebx); // return address - - // Do tail-call to runtime routine. - ExternalReference ref(IC_Utility(kKeyedStoreIC_Slow), masm->isolate()); - __ TailCallExternalReference(ref, 3, 1); -} - - -void KeyedStoreIC::GenerateTransitionElementsSmiToDouble(MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ebx : target map - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - // Must return the modified receiver in eax. - if (!FLAG_trace_elements_transitions) { - Label fail; - AllocationSiteMode mode = AllocationSiteInfo::GetMode(FAST_SMI_ELEMENTS, - FAST_DOUBLE_ELEMENTS); - ElementsTransitionGenerator::GenerateSmiToDouble(masm, mode, &fail); - __ mov(eax, edx); - __ Ret(); - __ bind(&fail); - } - - __ pop(ebx); - __ push(edx); - __ push(ebx); // return address - // Leaving the code managed by the register allocator and return to the - // convention of using esi as context register. - __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); - __ TailCallRuntime(Runtime::kTransitionElementsSmiToDouble, 1, 1); -} - - -void KeyedStoreIC::GenerateTransitionElementsDoubleToObject( - MacroAssembler* masm) { - // ----------- S t a t e ------------- - // -- ebx : target map - // -- edx : receiver - // -- esp[0] : return address - // ----------------------------------- - // Must return the modified receiver in eax. - if (!FLAG_trace_elements_transitions) { - Label fail; - AllocationSiteMode mode = AllocationSiteInfo::GetMode(FAST_DOUBLE_ELEMENTS, - FAST_ELEMENTS); - ElementsTransitionGenerator::GenerateDoubleToObject(masm, mode, &fail); - __ mov(eax, edx); - __ Ret(); - __ bind(&fail); - } - - __ pop(ebx); - __ push(edx); - __ push(ebx); // return address - // Leaving the code managed by the register allocator and return to the - // convention of using esi as context register. - __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); - __ TailCallRuntime(Runtime::kTransitionElementsDoubleToObject, 1, 1); -} - - -#undef __ - - -Condition CompareIC::ComputeCondition(Token::Value op) { - switch (op) { - case Token::EQ_STRICT: - case Token::EQ: - return equal; - case Token::LT: - return less; - case Token::GT: - return greater; - case Token::LTE: - return less_equal; - case Token::GTE: - return greater_equal; - default: - UNREACHABLE(); - return no_condition; - } -} - - -bool CompareIC::HasInlinedSmiCode(Address address) { - // The address of the instruction following the call. - Address test_instruction_address = - address + Assembler::kCallTargetAddressOffset; - - // If the instruction following the call is not a test al, nothing - // was inlined. - return *test_instruction_address == Assembler::kTestAlByte; -} - - -void PatchInlinedSmiCode(Address address, InlinedSmiCheck check) { - // The address of the instruction following the call. - Address test_instruction_address = - address + Assembler::kCallTargetAddressOffset; - - // If the instruction following the call is not a test al, nothing - // was inlined. - if (*test_instruction_address != Assembler::kTestAlByte) { - ASSERT(*test_instruction_address == Assembler::kNopByte); - return; - } - - Address delta_address = test_instruction_address + 1; - // The delta to the start of the map check instruction and the - // condition code uses at the patched jump. - int8_t delta = *reinterpret_cast<int8_t*>(delta_address); - if (FLAG_trace_ic) { - PrintF("[ patching ic at %p, test=%p, delta=%d\n", - address, test_instruction_address, delta); - } - - // Patch with a short conditional jump. Enabling means switching from a short - // jump-if-carry/not-carry to jump-if-zero/not-zero, whereas disabling is the - // reverse operation of that. - Address jmp_address = test_instruction_address - delta; - ASSERT((check == ENABLE_INLINED_SMI_CHECK) - ? (*jmp_address == Assembler::kJncShortOpcode || - *jmp_address == Assembler::kJcShortOpcode) - : (*jmp_address == Assembler::kJnzShortOpcode || - *jmp_address == Assembler::kJzShortOpcode)); - Condition cc = (check == ENABLE_INLINED_SMI_CHECK) - ? (*jmp_address == Assembler::kJncShortOpcode ? not_zero : zero) - : (*jmp_address == Assembler::kJnzShortOpcode ? not_carry : carry); - *jmp_address = static_cast<byte>(Assembler::kJccShortPrefix | cc); -} - - -} } // namespace v8::internal - -#endif // V8_TARGET_ARCH_IA32 |