Update V8 to r7427: Initial merge by git

As required by WebKit r82507

Change-Id: I7ae83ef3f689356043b4929255b7c1dd31d8c5df

1 files changed, 158 insertions, 97 deletions

diff --git a/src/assembler.cc b/src/assembler.cc
index b0b44fd9..0322747c 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -55,6 +55,8 @@
 #include "x64/regexp-macro-assembler-x64.h"
 #elif V8_TARGET_ARCH_ARM
 #include "arm/regexp-macro-assembler-arm.h"
+#elif V8_TARGET_ARCH_MIPS
+#include "mips/regexp-macro-assembler-mips.h"
 #else  // Unknown architecture.
 #error "Unknown architecture."
 #endif  // Target architecture.
@@ -67,6 +69,7 @@ namespace internal {
 const double DoubleConstant::min_int = kMinInt;
 const double DoubleConstant::one_half = 0.5;
 const double DoubleConstant::minus_zero = -0.0;
+const double DoubleConstant::nan = OS::nan_value();
 const double DoubleConstant::negative_infinity = -V8_INFINITY;
 const char* RelocInfo::kFillerCommentString = "DEOPTIMIZATION PADDING";
 
@@ -139,6 +142,7 @@ const int kPCJumpTag = (1 << kExtraTagBits) - 1;
 
 const int kSmallPCDeltaBits = kBitsPerByte - kTagBits;
 const int kSmallPCDeltaMask = (1 << kSmallPCDeltaBits) - 1;
+const int RelocInfo::kMaxSmallPCDelta = kSmallPCDeltaMask;
 
 const int kVariableLengthPCJumpTopTag = 1;
 const int kChunkBits = 7;
@@ -216,7 +220,6 @@ void RelocInfoWriter::Write(const RelocInfo* rinfo) {
 #ifdef DEBUG
   byte* begin_pos = pos_;
 #endif
-  Counters::reloc_info_count.Increment();
   ASSERT(rinfo->pc() - last_pc_ >= 0);
   ASSERT(RelocInfo::NUMBER_OF_MODES <= kMaxRelocModes);
   // Use unsigned delta-encoding for pc.
@@ -525,7 +528,7 @@ void RelocInfo::Verify() {
       ASSERT(addr != NULL);
       // Check that we can find the right code object.
       Code* code = Code::GetCodeFromTargetAddress(addr);
-      Object* found = Heap::FindCodeObject(addr);
+      Object* found = HEAP->FindCodeObject(addr);
       ASSERT(found->IsCode());
       ASSERT(code->address() == HeapObject::cast(found)->address());
       break;
@@ -551,153 +554,184 @@ void RelocInfo::Verify() {
 // -----------------------------------------------------------------------------
 // Implementation of ExternalReference
 
-ExternalReference::ExternalReference(Builtins::CFunctionId id)
-  : address_(Redirect(Builtins::c_function_address(id))) {}
+ExternalReference::ExternalReference(Builtins::CFunctionId id, Isolate* isolate)
+  : address_(Redirect(isolate, Builtins::c_function_address(id))) {}
 
 
 ExternalReference::ExternalReference(
-    ApiFunction* fun, Type type = ExternalReference::BUILTIN_CALL)
-  : address_(Redirect(fun->address(), type)) {}
+    ApiFunction* fun,
+    Type type = ExternalReference::BUILTIN_CALL,
+    Isolate* isolate = NULL)
+  : address_(Redirect(isolate, fun->address(), type)) {}
 
 
-ExternalReference::ExternalReference(Builtins::Name name)
-  : address_(Builtins::builtin_address(name)) {}
+ExternalReference::ExternalReference(Builtins::Name name, Isolate* isolate)
+  : address_(isolate->builtins()->builtin_address(name)) {}
 
 
-ExternalReference::ExternalReference(Runtime::FunctionId id)
-  : address_(Redirect(Runtime::FunctionForId(id)->entry)) {}
+ExternalReference::ExternalReference(Runtime::FunctionId id,
+                                     Isolate* isolate)
+  : address_(Redirect(isolate, Runtime::FunctionForId(id)->entry)) {}
 
 
-ExternalReference::ExternalReference(Runtime::Function* f)
-  : address_(Redirect(f->entry)) {}
+ExternalReference::ExternalReference(const Runtime::Function* f,
+                                     Isolate* isolate)
+  : address_(Redirect(isolate, f->entry)) {}
 
 
-ExternalReference::ExternalReference(const IC_Utility& ic_utility)
-  : address_(Redirect(ic_utility.address())) {}
+ExternalReference ExternalReference::isolate_address() {
+  return ExternalReference(Isolate::Current());
+}
+
+
+ExternalReference::ExternalReference(const IC_Utility& ic_utility,
+                                     Isolate* isolate)
+  : address_(Redirect(isolate, ic_utility.address())) {}
 
 #ifdef ENABLE_DEBUGGER_SUPPORT
-ExternalReference::ExternalReference(const Debug_Address& debug_address)
-  : address_(debug_address.address()) {}
+ExternalReference::ExternalReference(const Debug_Address& debug_address,
+                                     Isolate* isolate)
+  : address_(debug_address.address(isolate)) {}
 #endif
 
 ExternalReference::ExternalReference(StatsCounter* counter)
   : address_(reinterpret_cast<Address>(counter->GetInternalPointer())) {}
 
 
-ExternalReference::ExternalReference(Top::AddressId id)
-  : address_(Top::get_address_from_id(id)) {}
+ExternalReference::ExternalReference(Isolate::AddressId id, Isolate* isolate)
+  : address_(isolate->get_address_from_id(id)) {}
 
 
 ExternalReference::ExternalReference(const SCTableReference& table_ref)
   : address_(table_ref.address()) {}
 
 
-ExternalReference ExternalReference::perform_gc_function() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(Runtime::PerformGC)));
+ExternalReference ExternalReference::perform_gc_function(Isolate* isolate) {
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(Runtime::PerformGC)));
 }
 
 
-ExternalReference ExternalReference::fill_heap_number_with_random_function() {
-  return
-      ExternalReference(Redirect(FUNCTION_ADDR(V8::FillHeapNumberWithRandom)));
+ExternalReference ExternalReference::fill_heap_number_with_random_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(
+      isolate,
+      FUNCTION_ADDR(V8::FillHeapNumberWithRandom)));
 }
 
 
-ExternalReference ExternalReference::delete_handle_scope_extensions() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(
-                           HandleScope::DeleteExtensions)));
+ExternalReference ExternalReference::delete_handle_scope_extensions(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(
+      isolate,
+      FUNCTION_ADDR(HandleScope::DeleteExtensions)));
 }
 
 
-ExternalReference ExternalReference::random_uint32_function() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(V8::Random)));
+ExternalReference ExternalReference::random_uint32_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(isolate, FUNCTION_ADDR(V8::Random)));
 }
 
 
-ExternalReference ExternalReference::transcendental_cache_array_address() {
-  return ExternalReference(TranscendentalCache::cache_array_address());
+ExternalReference ExternalReference::transcendental_cache_array_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->transcendental_cache()->cache_array_address());
 }
 
 
-ExternalReference ExternalReference::new_deoptimizer_function() {
+ExternalReference ExternalReference::new_deoptimizer_function(
+    Isolate* isolate) {
   return ExternalReference(
-      Redirect(FUNCTION_ADDR(Deoptimizer::New)));
+      Redirect(isolate, FUNCTION_ADDR(Deoptimizer::New)));
 }
 
 
-ExternalReference ExternalReference::compute_output_frames_function() {
+ExternalReference ExternalReference::compute_output_frames_function(
+    Isolate* isolate) {
   return ExternalReference(
-      Redirect(FUNCTION_ADDR(Deoptimizer::ComputeOutputFrames)));
+      Redirect(isolate, FUNCTION_ADDR(Deoptimizer::ComputeOutputFrames)));
 }
 
 
-ExternalReference ExternalReference::global_contexts_list() {
-  return ExternalReference(Heap::global_contexts_list_address());
+ExternalReference ExternalReference::global_contexts_list(Isolate* isolate) {
+  return ExternalReference(isolate->heap()->global_contexts_list_address());
 }
 
 
-ExternalReference ExternalReference::keyed_lookup_cache_keys() {
-  return ExternalReference(KeyedLookupCache::keys_address());
+ExternalReference ExternalReference::keyed_lookup_cache_keys(Isolate* isolate) {
+  return ExternalReference(isolate->keyed_lookup_cache()->keys_address());
 }
 
 
-ExternalReference ExternalReference::keyed_lookup_cache_field_offsets() {
-  return ExternalReference(KeyedLookupCache::field_offsets_address());
+ExternalReference ExternalReference::keyed_lookup_cache_field_offsets(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->keyed_lookup_cache()->field_offsets_address());
 }
 
 
-ExternalReference ExternalReference::the_hole_value_location() {
-  return ExternalReference(Factory::the_hole_value().location());
+ExternalReference ExternalReference::the_hole_value_location(Isolate* isolate) {
+  return ExternalReference(isolate->factory()->the_hole_value().location());
 }
 
 
-ExternalReference ExternalReference::arguments_marker_location() {
-  return ExternalReference(Factory::arguments_marker().location());
+ExternalReference ExternalReference::arguments_marker_location(
+    Isolate* isolate) {
+  return ExternalReference(isolate->factory()->arguments_marker().location());
 }
 
 
-ExternalReference ExternalReference::roots_address() {
-  return ExternalReference(Heap::roots_address());
+ExternalReference ExternalReference::roots_address(Isolate* isolate) {
+  return ExternalReference(isolate->heap()->roots_address());
 }
 
 
-ExternalReference ExternalReference::address_of_stack_limit() {
-  return ExternalReference(StackGuard::address_of_jslimit());
+ExternalReference ExternalReference::address_of_stack_limit(Isolate* isolate) {
+  return ExternalReference(isolate->stack_guard()->address_of_jslimit());
 }
 
 
-ExternalReference ExternalReference::address_of_real_stack_limit() {
-  return ExternalReference(StackGuard::address_of_real_jslimit());
+ExternalReference ExternalReference::address_of_real_stack_limit(
+    Isolate* isolate) {
+  return ExternalReference(isolate->stack_guard()->address_of_real_jslimit());
 }
 
 
-ExternalReference ExternalReference::address_of_regexp_stack_limit() {
-  return ExternalReference(RegExpStack::limit_address());
+ExternalReference ExternalReference::address_of_regexp_stack_limit(
+    Isolate* isolate) {
+  return ExternalReference(isolate->regexp_stack()->limit_address());
 }
 
 
-ExternalReference ExternalReference::new_space_start() {
-  return ExternalReference(Heap::NewSpaceStart());
+ExternalReference ExternalReference::new_space_start(Isolate* isolate) {
+  return ExternalReference(isolate->heap()->NewSpaceStart());
 }
 
 
-ExternalReference ExternalReference::new_space_mask() {
-  return ExternalReference(reinterpret_cast<Address>(Heap::NewSpaceMask()));
+ExternalReference ExternalReference::new_space_mask(Isolate* isolate) {
+  Address mask = reinterpret_cast<Address>(isolate->heap()->NewSpaceMask());
+  return ExternalReference(mask);
 }
 
 
-ExternalReference ExternalReference::new_space_allocation_top_address() {
-  return ExternalReference(Heap::NewSpaceAllocationTopAddress());
+ExternalReference ExternalReference::new_space_allocation_top_address(
+    Isolate* isolate) {
+  return ExternalReference(isolate->heap()->NewSpaceAllocationTopAddress());
 }
 
 
-ExternalReference ExternalReference::heap_always_allocate_scope_depth() {
-  return ExternalReference(Heap::always_allocate_scope_depth_address());
+ExternalReference ExternalReference::heap_always_allocate_scope_depth(
+    Isolate* isolate) {
+  Heap* heap = isolate->heap();
+  return ExternalReference(heap->always_allocate_scope_depth_address());
 }
 
 
-ExternalReference ExternalReference::new_space_allocation_limit_address() {
-  return ExternalReference(Heap::NewSpaceAllocationLimitAddress());
+ExternalReference ExternalReference::new_space_allocation_limit_address(
+    Isolate* isolate) {
+  return ExternalReference(isolate->heap()->NewSpaceAllocationLimitAddress());
 }
 
 
@@ -716,8 +750,9 @@ ExternalReference ExternalReference::handle_scope_limit_address() {
 }
 
 
-ExternalReference ExternalReference::scheduled_exception_address() {
-  return ExternalReference(Top::scheduled_exception_address());
+ExternalReference ExternalReference::scheduled_exception_address(
+    Isolate* isolate) {
+  return ExternalReference(isolate->scheduled_exception_address());
 }
 
 
@@ -745,9 +780,16 @@ ExternalReference ExternalReference::address_of_negative_infinity() {
 }
 
 
+ExternalReference ExternalReference::address_of_nan() {
+  return ExternalReference(reinterpret_cast<void*>(
+      const_cast<double*>(&DoubleConstant::nan)));
+}
+
+
 #ifndef V8_INTERPRETED_REGEXP
 
-ExternalReference ExternalReference::re_check_stack_guard_state() {
+ExternalReference ExternalReference::re_check_stack_guard_state(
+    Isolate* isolate) {
   Address function;
 #ifdef V8_TARGET_ARCH_X64
   function = FUNCTION_ADDR(RegExpMacroAssemblerX64::CheckStackGuardState);
@@ -755,19 +797,23 @@ ExternalReference ExternalReference::re_check_stack_guard_state() {
   function = FUNCTION_ADDR(RegExpMacroAssemblerIA32::CheckStackGuardState);
 #elif V8_TARGET_ARCH_ARM
   function = FUNCTION_ADDR(RegExpMacroAssemblerARM::CheckStackGuardState);
+#elif V8_TARGET_ARCH_MIPS
+  function = FUNCTION_ADDR(RegExpMacroAssemblerMIPS::CheckStackGuardState);
 #else
   UNREACHABLE();
 #endif
-  return ExternalReference(Redirect(function));
+  return ExternalReference(Redirect(isolate, function));
 }
 
-ExternalReference ExternalReference::re_grow_stack() {
+ExternalReference ExternalReference::re_grow_stack(Isolate* isolate) {
   return ExternalReference(
-      Redirect(FUNCTION_ADDR(NativeRegExpMacroAssembler::GrowStack)));
+      Redirect(isolate, FUNCTION_ADDR(NativeRegExpMacroAssembler::GrowStack)));
 }
 
-ExternalReference ExternalReference::re_case_insensitive_compare_uc16() {
+ExternalReference ExternalReference::re_case_insensitive_compare_uc16(
+    Isolate* isolate) {
   return ExternalReference(Redirect(
+      isolate,
       FUNCTION_ADDR(NativeRegExpMacroAssembler::CaseInsensitiveCompareUC16)));
 }
 
@@ -776,16 +822,21 @@ ExternalReference ExternalReference::re_word_character_map() {
       NativeRegExpMacroAssembler::word_character_map_address());
 }
 
-ExternalReference ExternalReference::address_of_static_offsets_vector() {
-  return ExternalReference(OffsetsVector::static_offsets_vector_address());
+ExternalReference ExternalReference::address_of_static_offsets_vector(
+    Isolate* isolate) {
+  return ExternalReference(
+      OffsetsVector::static_offsets_vector_address(isolate));
 }
 
-ExternalReference ExternalReference::address_of_regexp_stack_memory_address() {
-  return ExternalReference(RegExpStack::memory_address());
+ExternalReference ExternalReference::address_of_regexp_stack_memory_address(
+    Isolate* isolate) {
+  return ExternalReference(
+      isolate->regexp_stack()->memory_address());
 }
 
-ExternalReference ExternalReference::address_of_regexp_stack_memory_size() {
-  return ExternalReference(RegExpStack::memory_size_address());
+ExternalReference ExternalReference::address_of_regexp_stack_memory_size(
+    Isolate* isolate) {
+  return ExternalReference(isolate->regexp_stack()->memory_size_address());
 }
 
 #endif  // V8_INTERPRETED_REGEXP
@@ -831,20 +882,26 @@ static double math_log_double(double x) {
 }
 
 
-ExternalReference ExternalReference::math_sin_double_function() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(math_sin_double),
+ExternalReference ExternalReference::math_sin_double_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(math_sin_double),
                                     FP_RETURN_CALL));
 }
 
 
-ExternalReference ExternalReference::math_cos_double_function() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(math_cos_double),
+ExternalReference ExternalReference::math_cos_double_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(math_cos_double),
                                     FP_RETURN_CALL));
 }
 
 
-ExternalReference ExternalReference::math_log_double_function() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(math_log_double),
+ExternalReference ExternalReference::math_log_double_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(math_log_double),
                                     FP_RETURN_CALL));
 }
 
@@ -884,14 +941,18 @@ double power_double_double(double x, double y) {
 }
 
 
-ExternalReference ExternalReference::power_double_double_function() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(power_double_double),
+ExternalReference ExternalReference::power_double_double_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(power_double_double),
                                     FP_RETURN_CALL));
 }
 
 
-ExternalReference ExternalReference::power_double_int_function() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(power_double_int),
+ExternalReference ExternalReference::power_double_int_function(
+    Isolate* isolate) {
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(power_double_int),
                                     FP_RETURN_CALL));
 }
 
@@ -903,7 +964,7 @@ static int native_compare_doubles(double y, double x) {
 
 
 ExternalReference ExternalReference::double_fp_operation(
-    Token::Value operation) {
+    Token::Value operation, Isolate* isolate) {
   typedef double BinaryFPOperation(double x, double y);
   BinaryFPOperation* function = NULL;
   switch (operation) {
@@ -926,28 +987,28 @@ ExternalReference ExternalReference::double_fp_operation(
       UNREACHABLE();
   }
   // Passing true as 2nd parameter indicates that they return an fp value.
-  return ExternalReference(Redirect(FUNCTION_ADDR(function), FP_RETURN_CALL));
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(function),
+                                    FP_RETURN_CALL));
 }
 
 
-ExternalReference ExternalReference::compare_doubles() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(native_compare_doubles),
+ExternalReference ExternalReference::compare_doubles(Isolate* isolate) {
+  return ExternalReference(Redirect(isolate,
+                                    FUNCTION_ADDR(native_compare_doubles),
                                     BUILTIN_CALL));
 }
 
 
-ExternalReference::ExternalReferenceRedirector*
-    ExternalReference::redirector_ = NULL;
-
-
 #ifdef ENABLE_DEBUGGER_SUPPORT
-ExternalReference ExternalReference::debug_break() {
-  return ExternalReference(Redirect(FUNCTION_ADDR(Debug::Break)));
+ExternalReference ExternalReference::debug_break(Isolate* isolate) {
+  return ExternalReference(Redirect(isolate, FUNCTION_ADDR(Debug::Break)));
 }
 
 
-ExternalReference ExternalReference::debug_step_in_fp_address() {
-  return ExternalReference(Debug::step_in_fp_addr());
+ExternalReference ExternalReference::debug_step_in_fp_address(
+    Isolate* isolate) {
+  return ExternalReference(isolate->debug()->step_in_fp_addr());
 }
 #endif