[wasm] Add test for non-misaligned OOB access.

test/cctest/wasm/test-run-wasm.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "src/wasm/wasm-macro-gen.h"
 
@@ skipping 1527 matching lines @@
   memory[0] = 11111111;
   memory[1] = 22222222;
   memory[2] = 33333333;
   memory[3] = 44444444;
   CHECK_EQ(22222222, r.Call(0));
   CHECK_EQ(33333333, r.Call(4));
   CHECK_EQ(44444444, r.Call(8));
 }
 
 
-// TODO(titzer): Fix for mips and re-enable.
 #if !V8_TARGET_ARCH_MIPS && !V8_TARGET_ARCH_MIPS64
 
-TEST(Run_Wasm_LoadMemI32_const_oob) {
+TEST(Run_Wasm_LoadMemI32_const_oob_misaligned) {
+  // TODO(titzer): Fix misaligned accesses on MIPS and re-enable.
   TestingModule module;
   const int kMemSize = 12;
   module.AddMemoryElems<byte>(kMemSize);
 
   for (int offset = 0; offset < kMemSize + 5; offset++) {
     for (int index = 0; index < kMemSize + 5; index++) {
       WasmRunner<int32_t> r;
       r.env()->module = &module;
       module.RandomizeMemory();
 
       BUILD(r,
             WASM_LOAD_MEM_OFFSET(MachineType::Int32(), offset, WASM_I8(index)));
 
       if ((offset + index) <= (kMemSize - sizeof(int32_t))) {
         CHECK_EQ(module.raw_val_at<int32_t>(offset + index), r.Call());
       } else {
         CHECK_TRAP(r.Call());
       }
     }
   }
 }
 
 #endif
 
 
+TEST(Run_Wasm_LoadMemI32_const_oob) {
+  TestingModule module;
+  const int kMemSize = 24;
+  module.AddMemoryElems<byte>(kMemSize);
+
+  for (int offset = 0; offset < kMemSize + 5; offset += 4) {
+    for (int index = 0; index < kMemSize + 5; index += 4) {
+      WasmRunner<int32_t> r;
+      r.env()->module = &module;
+      module.RandomizeMemory();
+
+      BUILD(r,
+            WASM_LOAD_MEM_OFFSET(MachineType::Int32(), offset, WASM_I8(index)));
+
+      if ((offset + index) <= (kMemSize - sizeof(int32_t))) {
+        CHECK_EQ(module.raw_val_at<int32_t>(offset + index), r.Call());
+      } else {
+        CHECK_TRAP(r.Call());
+      }
+    }
+  }
+}
+
+
 TEST(Run_Wasm_StoreMemI32_offset) {
   WasmRunner<int32_t> r(MachineType::Int32());
   const int32_t kWritten = 0xaabbccdd;
   TestingModule module;
   int32_t* memory = module.AddMemoryElems<int32_t>(4);
   r.env()->module = &module;
 
   BUILD(r, WASM_STORE_MEM_OFFSET(MachineType::Int32(), 4, WASM_GET_LOCAL(0),
                                  WASM_I32(kWritten)));
 
@@ skipping 1658 matching lines @@
 TEST(Run_Wasm_F32CopySign) {
   WasmRunner<float> r(MachineType::Float32(), MachineType::Float32());
   BUILD(r, WASM_F32_COPYSIGN(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
 
   FOR_FLOAT32_INPUTS(i) {
     FOR_FLOAT32_INPUTS(j) { CheckFloatEq(copysign(*i, *j), r.Call(*i, *j)); }
   }
 }
 
 #endif