Support unaligned integer loads on ARM and MIPS.

runtime/vm/unit_test.h

Index: runtime/vm/unit_test.h
diff --git a/runtime/vm/unit_test.h b/runtime/vm/unit_test.h
index 9047f02ea9d1bef37f126c283654651b4818a293..61d0715918f8aea08c8de0292ae3a4b808375a40 100644
--- a/runtime/vm/unit_test.h
+++ b/runtime/vm/unit_test.h
@@ -174,10 +174,11 @@
     reinterpret_cast<name>(entry)(double_arg)
 #define EXECUTE_TEST_CODE_INTPTR_INTPTR(name, entry, pointer_arg)              \
     reinterpret_cast<name>(entry)(pointer_arg)
+#define EXECUTE_TEST_CODE_INT32_INTPTR(name, entry, pointer_arg)               \
+    reinterpret_cast<name>(entry)(pointer_arg)
 #else
 // Not running on ARM or MIPS hardware, call simulator to execute code.
 #if defined(ARCH_IS_64_BIT)
-// TODO(zra): Supply more macros for 64-bit as tests are added for ARM64.
 #define EXECUTE_TEST_CODE_INT64(name, entry)                                   \
   static_cast<int64_t>(Simulator::Current()->Call(                             \
       bit_cast<int64_t, uword>(entry), 0, 0, 0, 0))
@@ -189,6 +190,11 @@
       bit_cast<int64_t, uword>(entry),                                         \
       bit_cast<int64_t, intptr_t>(pointer_arg),                                \
       0, 0, 0))
+#define EXECUTE_TEST_CODE_INT32_INTPTR(name, entry, pointer_arg)               \
+  static_cast<int32_t>(Simulator::Current()->Call(                             \
+      bit_cast<int64_t, uword>(entry),                                         \
+      bit_cast<int64_t, intptr_t>(pointer_arg),                                \
+      0, 0, 0))
 #else
 #define EXECUTE_TEST_CODE_INT32(name, entry)                                   \
   static_cast<int32_t>(Simulator::Current()->Call(                             \
@@ -201,6 +207,11 @@
       bit_cast<int32_t, uword>(entry),                                         \
       bit_cast<int32_t, intptr_t>(pointer_arg),                                \
       0, 0, 0))
+#define EXECUTE_TEST_CODE_INT32_INTPTR(name, entry, pointer_arg)               \
+  static_cast<int32_t>(Simulator::Current()->Call(                             \
+      bit_cast<int32_t, uword>(entry),                                         \
+      bit_cast<int32_t, intptr_t>(pointer_arg),                                \
+      0, 0, 0))
 #endif  // defined(ARCH_IS_64_BIT)
 #define EXECUTE_TEST_CODE_INT64_LL(name, entry, long_arg0, long_arg1)          \
   static_cast<int64_t>(Simulator::Current()->Call(                             \