(mips) adding simulator support for AUI/DAUI/DAHI/DATI instructions.

test/cctest/test-assembler-mips.cc

Index: test/cctest/test-assembler-mips.cc
diff --git a/test/cctest/test-assembler-mips.cc b/test/cctest/test-assembler-mips.cc
index 16c9970eef1c72902d80c8a82f5d285e053adbad..9390159da8ada9490a1394a36e2cde904f73eb1c 100644
--- a/test/cctest/test-assembler-mips.cc
+++ b/test/cctest/test-assembler-mips.cc
@@ -5059,6 +5059,64 @@ int32_t run_balc(int32_t offset) {
 }
 
 
+uint32_t run_aui(uint32_t rs, uint16_t offset) {
+  Isolate* isolate = CcTest::i_isolate();
+  HandleScope scope(isolate);
+
+  MacroAssembler assm(isolate, NULL, 0, v8::internal::CodeObjectRequired::kYes);
+
+  __ li(t0, rs);
+  __ aui(v0, t0, offset);
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Handle<Code> code = isolate->factory()->NewCode(
+      desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
+
+  F2 f = FUNCTION_CAST<F2>(code->entry());
+
+  uint32_t res =
+    reinterpret_cast<uint32_t>
+        (CALL_GENERATED_CODE(isolate, f, 0, 0, 0, 0, 0));
+
+  return res;
+}
+
+
+TEST(r6_aui) {
+  if (IsMipsArchVariant(kMips32r6)) {
+    CcTest::InitializeVM();
+
+    struct TestCaseAui {
+      uint32_t   rs;
+      uint16_t   offset;
+      uint32_t   ref_res;
+    };
+
+    struct TestCaseAui tc[] = {
+      // input, offset, result
+      {0xfffeffff, 1, 0xffffffff},
+      {0xffffffff, 0, 0xffffffff},
+      {0, 0xffff, 0xffff0000},
+      {0x0008ffff, 0xfff7, 0xffffffff},
+      {32767, 32767, 0x7fff7fff},
+      // overflow cases
+      {0xffffffff, 0x1, 0x0000ffff},
+      {0xffffffff, 0xffff, 0xfffeffff},
+    };
+
+    size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseAui);
+    for (size_t i = 0; i < nr_test_cases; ++i) {
+      PC = 0;
+      uint32_t res = run_aui(tc[i].rs, tc[i].offset);
+      CHECK_EQ(tc[i].ref_res, res);
+    }
+  }
+}
+
+
 TEST(r6_balc) {
   if (IsMipsArchVariant(kMips32r6)) {
     CcTest::InitializeVM();