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diff --git a/deps/v8/test/cctest/test-disasm-x87.cc b/deps/v8/test/cctest/test-disasm-x87.cc
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+++ b/deps/v8/test/cctest/test-disasm-x87.cc
@@ -0,0 +1,410 @@
+// 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
+//       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 <stdlib.h>
+
+#include "src/v8.h"
+
+#include "src/debug.h"
+#include "src/disasm.h"
+#include "src/disassembler.h"
+#include "src/macro-assembler.h"
+#include "src/serialize.h"
+#include "src/stub-cache.h"
+#include "test/cctest/cctest.h"
+
+using namespace v8::internal;
+
+
+#define __ assm.
+
+
+static void DummyStaticFunction(Object* result) {
+}
+
+
+TEST(DisasmIa320) {
+  CcTest::InitializeVM();
+  Isolate* isolate = CcTest::i_isolate();
+  HandleScope scope(isolate);
+  v8::internal::byte buffer[2048];
+  Assembler assm(isolate, buffer, sizeof buffer);
+  DummyStaticFunction(NULL);  // just bloody use it (DELETE; debugging)
+
+  // Short immediate instructions
+  __ adc(eax, 12345678);
+  __ add(eax, Immediate(12345678));
+  __ or_(eax, 12345678);
+  __ sub(eax, Immediate(12345678));
+  __ xor_(eax, 12345678);
+  __ and_(eax, 12345678);
+  Handle<FixedArray> foo = isolate->factory()->NewFixedArray(10, TENURED);
+  __ cmp(eax, foo);
+
+  // ---- This one caused crash
+  __ mov(ebx,  Operand(esp, ecx, times_2, 0));  // [esp+ecx*4]
+
+  // ---- All instructions that I can think of
+  __ add(edx, ebx);
+  __ add(edx, Operand(12, RelocInfo::NONE32));
+  __ add(edx, Operand(ebx, 0));
+  __ add(edx, Operand(ebx, 16));
+  __ add(edx, Operand(ebx, 1999));
+  __ add(edx, Operand(ebx, -4));
+  __ add(edx, Operand(ebx, -1999));
+  __ add(edx, Operand(esp, 0));
+  __ add(edx, Operand(esp, 16));
+  __ add(edx, Operand(esp, 1999));
+  __ add(edx, Operand(esp, -4));
+  __ add(edx, Operand(esp, -1999));
+  __ nop();
+  __ add(esi, Operand(ecx, times_4, 0));
+  __ add(esi, Operand(ecx, times_4, 24));
+  __ add(esi, Operand(ecx, times_4, -4));
+  __ add(esi, Operand(ecx, times_4, -1999));
+  __ nop();
+  __ add(edi, Operand(ebp, ecx, times_4, 0));
+  __ add(edi, Operand(ebp, ecx, times_4, 12));
+  __ add(edi, Operand(ebp, ecx, times_4, -8));
+  __ add(edi, Operand(ebp, ecx, times_4, -3999));
+  __ add(Operand(ebp, ecx, times_4, 12), Immediate(12));
+
+  __ nop();
+  __ add(ebx, Immediate(12));
+  __ nop();
+  __ adc(ecx, 12);
+  __ adc(ecx, 1000);
+  __ nop();
+  __ and_(edx, 3);
+  __ and_(edx, Operand(esp, 4));
+  __ cmp(edx, 3);
+  __ cmp(edx, Operand(esp, 4));
+  __ cmp(Operand(ebp, ecx, times_4, 0), Immediate(1000));
+  Handle<FixedArray> foo2 = isolate->factory()->NewFixedArray(10, TENURED);
+  __ cmp(ebx, foo2);
+  __ cmpb(ebx, Operand(ebp, ecx, times_2, 0));
+  __ cmpb(Operand(ebp, ecx, times_2, 0), ebx);
+  __ or_(edx, 3);
+  __ xor_(edx, 3);
+  __ nop();
+  __ cpuid();
+  __ movsx_b(edx, ecx);
+  __ movsx_w(edx, ecx);
+  __ movzx_b(edx, ecx);
+  __ movzx_w(edx, ecx);
+
+  __ nop();
+  __ imul(edx, ecx);
+  __ shld(edx, ecx);
+  __ shrd(edx, ecx);
+  __ bts(edx, ecx);
+  __ bts(Operand(ebx, ecx, times_4, 0), ecx);
+  __ nop();
+  __ pushad();
+  __ popad();
+  __ pushfd();
+  __ popfd();
+  __ push(Immediate(12));
+  __ push(Immediate(23456));
+  __ push(ecx);
+  __ push(esi);
+  __ push(Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
+  __ push(Operand(ebx, ecx, times_4, 0));
+  __ push(Operand(ebx, ecx, times_4, 0));
+  __ push(Operand(ebx, ecx, times_4, 10000));
+  __ pop(edx);
+  __ pop(eax);
+  __ pop(Operand(ebx, ecx, times_4, 0));
+  __ nop();
+
+  __ add(edx, Operand(esp, 16));
+  __ add(edx, ecx);
+  __ mov_b(edx, ecx);
+  __ mov_b(ecx, 6);
+  __ mov_b(Operand(ebx, ecx, times_4, 10000), 6);
+  __ mov_b(Operand(esp, 16), edx);
+  __ mov_w(edx, Operand(esp, 16));
+  __ mov_w(Operand(esp, 16), edx);
+  __ nop();
+  __ movsx_w(edx, Operand(esp, 12));
+  __ movsx_b(edx, Operand(esp, 12));
+  __ movzx_w(edx, Operand(esp, 12));
+  __ movzx_b(edx, Operand(esp, 12));
+  __ nop();
+  __ mov(edx, 1234567);
+  __ mov(edx, Operand(esp, 12));
+  __ mov(Operand(ebx, ecx, times_4, 10000), Immediate(12345));
+  __ mov(Operand(ebx, ecx, times_4, 10000), edx);
+  __ nop();
+  __ dec_b(edx);
+  __ dec_b(Operand(eax, 10));
+  __ dec_b(Operand(ebx, ecx, times_4, 10000));
+  __ dec(edx);
+  __ cdq();
+
+  __ nop();
+  __ idiv(edx);
+  __ idiv(Operand(edx, ecx, times_1, 1));
+  __ idiv(Operand(esp, 12));
+  __ div(edx);
+  __ div(Operand(edx, ecx, times_1, 1));
+  __ div(Operand(esp, 12));
+  __ mul(edx);
+  __ neg(edx);
+  __ not_(edx);
+  __ test(Operand(ebx, ecx, times_4, 10000), Immediate(123456));
+
+  __ imul(edx, Operand(ebx, ecx, times_4, 10000));
+  __ imul(edx, ecx, 12);
+  __ imul(edx, Operand(edx, eax, times_2, 42), 8);
+  __ imul(edx, ecx, 1000);
+  __ imul(edx, Operand(ebx, ecx, times_4, 1), 9000);
+
+  __ inc(edx);
+  __ inc(Operand(ebx, ecx, times_4, 10000));
+  __ push(Operand(ebx, ecx, times_4, 10000));
+  __ pop(Operand(ebx, ecx, times_4, 10000));
+  __ call(Operand(ebx, ecx, times_4, 10000));
+  __ jmp(Operand(ebx, ecx, times_4, 10000));
+
+  __ lea(edx, Operand(ebx, ecx, times_4, 10000));
+  __ or_(edx, 12345);
+  __ or_(edx, Operand(ebx, ecx, times_4, 10000));
+
+  __ nop();
+
+  __ rcl(edx, 1);
+  __ rcl(edx, 7);
+  __ rcr(edx, 1);
+  __ rcr(edx, 7);
+  __ sar(edx, 1);
+  __ sar(edx, 6);
+  __ sar_cl(edx);
+  __ sar(Operand(ebx, ecx, times_4, 10000), 1);
+  __ sar(Operand(ebx, ecx, times_4, 10000), 6);
+  __ sar_cl(Operand(ebx, ecx, times_4, 10000));
+  __ sbb(edx, Operand(ebx, ecx, times_4, 10000));
+  __ shld(edx, Operand(ebx, ecx, times_4, 10000));
+  __ shl(edx, 1);
+  __ shl(edx, 6);
+  __ shl_cl(edx);
+  __ shl(Operand(ebx, ecx, times_4, 10000), 1);
+  __ shl(Operand(ebx, ecx, times_4, 10000), 6);
+  __ shl_cl(Operand(ebx, ecx, times_4, 10000));
+  __ shrd(edx, Operand(ebx, ecx, times_4, 10000));
+  __ shr(edx, 1);
+  __ shr(edx, 7);
+  __ shr_cl(edx);
+  __ shr(Operand(ebx, ecx, times_4, 10000), 1);
+  __ shr(Operand(ebx, ecx, times_4, 10000), 6);
+  __ shr_cl(Operand(ebx, ecx, times_4, 10000));
+
+
+  // Immediates
+
+  __ adc(edx, 12345);
+
+  __ add(ebx, Immediate(12));
+  __ add(Operand(edx, ecx, times_4, 10000), Immediate(12));
+
+  __ and_(ebx, 12345);
+
+  __ cmp(ebx, 12345);
+  __ cmp(ebx, Immediate(12));
+  __ cmp(Operand(edx, ecx, times_4, 10000), Immediate(12));
+  __ cmpb(eax, 100);
+
+  __ or_(ebx, 12345);
+
+  __ sub(ebx, Immediate(12));
+  __ sub(Operand(edx, ecx, times_4, 10000), Immediate(12));
+
+  __ xor_(ebx, 12345);
+
+  __ imul(edx, ecx, 12);
+  __ imul(edx, ecx, 1000);
+
+  __ cld();
+  __ rep_movs();
+  __ rep_stos();
+  __ stos();
+
+  __ sub(edx, Operand(ebx, ecx, times_4, 10000));
+  __ sub(edx, ebx);
+
+  __ test(edx, Immediate(12345));
+  __ test(edx, Operand(ebx, ecx, times_8, 10000));
+  __ test(Operand(esi, edi, times_1, -20000000), Immediate(300000000));
+  __ test_b(edx, Operand(ecx, ebx, times_2, 1000));
+  __ test_b(Operand(eax, -20), 0x9A);
+  __ nop();
+
+  __ xor_(edx, 12345);
+  __ xor_(edx, Operand(ebx, ecx, times_8, 10000));
+  __ bts(Operand(ebx, ecx, times_8, 10000), edx);
+  __ hlt();
+  __ int3();
+  __ ret(0);
+  __ ret(8);
+
+  // Calls
+
+  Label L1, L2;
+  __ bind(&L1);
+  __ nop();
+  __ call(&L1);
+  __ call(&L2);
+  __ nop();
+  __ bind(&L2);
+  __ call(Operand(ebx, ecx, times_4, 10000));
+  __ nop();
+  Handle<Code> ic(LoadIC::initialize_stub(isolate, NOT_CONTEXTUAL));
+  __ call(ic, RelocInfo::CODE_TARGET);
+  __ nop();
+  __ call(FUNCTION_ADDR(DummyStaticFunction), RelocInfo::RUNTIME_ENTRY);
+  __ nop();
+
+  __ jmp(&L1);
+  __ jmp(Operand(ebx, ecx, times_4, 10000));
+  ExternalReference after_break_target =
+      ExternalReference::debug_after_break_target_address(isolate);
+  __ jmp(Operand::StaticVariable(after_break_target));
+  __ jmp(ic, RelocInfo::CODE_TARGET);
+  __ nop();
+
+
+  Label Ljcc;
+  __ nop();
+  // long jumps
+  __ j(overflow, &Ljcc);
+  __ j(no_overflow, &Ljcc);
+  __ j(below, &Ljcc);
+  __ j(above_equal, &Ljcc);
+  __ j(equal, &Ljcc);
+  __ j(not_equal, &Ljcc);
+  __ j(below_equal, &Ljcc);
+  __ j(above, &Ljcc);
+  __ j(sign, &Ljcc);
+  __ j(not_sign, &Ljcc);
+  __ j(parity_even, &Ljcc);
+  __ j(parity_odd, &Ljcc);
+  __ j(less, &Ljcc);
+  __ j(greater_equal, &Ljcc);
+  __ j(less_equal, &Ljcc);
+  __ j(greater, &Ljcc);
+  __ nop();
+  __ bind(&Ljcc);
+  // short jumps
+  __ j(overflow, &Ljcc);
+  __ j(no_overflow, &Ljcc);
+  __ j(below, &Ljcc);
+  __ j(above_equal, &Ljcc);
+  __ j(equal, &Ljcc);
+  __ j(not_equal, &Ljcc);
+  __ j(below_equal, &Ljcc);
+  __ j(above, &Ljcc);
+  __ j(sign, &Ljcc);
+  __ j(not_sign, &Ljcc);
+  __ j(parity_even, &Ljcc);
+  __ j(parity_odd, &Ljcc);
+  __ j(less, &Ljcc);
+  __ j(greater_equal, &Ljcc);
+  __ j(less_equal, &Ljcc);
+  __ j(greater, &Ljcc);
+
+  // 0xD9 instructions
+  __ nop();
+
+  __ fld(1);
+  __ fld1();
+  __ fldz();
+  __ fldpi();
+  __ fabs();
+  __ fchs();
+  __ fprem();
+  __ fprem1();
+  __ fincstp();
+  __ ftst();
+  __ fxch(3);
+  __ fld_s(Operand(ebx, ecx, times_4, 10000));
+  __ fstp_s(Operand(ebx, ecx, times_4, 10000));
+  __ ffree(3);
+  __ fld_d(Operand(ebx, ecx, times_4, 10000));
+  __ fstp_d(Operand(ebx, ecx, times_4, 10000));
+  __ nop();
+
+  __ fild_s(Operand(ebx, ecx, times_4, 10000));
+  __ fistp_s(Operand(ebx, ecx, times_4, 10000));
+  __ fild_d(Operand(ebx, ecx, times_4, 10000));
+  __ fistp_d(Operand(ebx, ecx, times_4, 10000));
+  __ fnstsw_ax();
+  __ nop();
+  __ fadd(3);
+  __ fsub(3);
+  __ fmul(3);
+  __ fdiv(3);
+
+  __ faddp(3);
+  __ fsubp(3);
+  __ fmulp(3);
+  __ fdivp(3);
+  __ fcompp();
+  __ fwait();
+  __ frndint();
+  __ fninit();
+  __ nop();
+
+  // xchg.
+  {
+    __ xchg(eax, eax);
+    __ xchg(eax, ebx);
+    __ xchg(ebx, ebx);
+    __ xchg(ebx, Operand(esp, 12));
+  }
+
+  // Nop instructions
+  for (int i = 0; i < 16; i++) {
+    __ Nop(i);
+  }
+
+  __ ret(0);
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Handle<Code> code = isolate->factory()->NewCode(
+      desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+  USE(code);
+#ifdef OBJECT_PRINT
+  OFStream os(stdout);
+  code->Print(os);
+  byte* begin = code->instruction_start();
+  byte* end = begin + code->instruction_size();
+  disasm::Disassembler::Disassemble(stdout, begin, end);
+#endif
+}
+
+#undef __