MIPS: port A collection of context-related refactoring changes.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 204c4cb8291dc5c44564bff41d59521ee9e8eeb7..503e8442af605804d3924253af33fc1a8df5b754 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -890,7 +890,7 @@ MaybeObject* Object::GetProperty(String* key, PropertyAttributes* attributes) {
 #else  // V8_TARGET_ARCH_MIPS
   // Prevent gcc from using load-double (mips ldc1) on (possibly)
   // non-64-bit aligned HeapNumber::value.
-  static inline double read_double_field(HeapNumber* p, int offset) {
+  static inline double read_double_field(void* p, int offset) {
     union conversion {
       double d;
       uint32_t u[2];
@@ -909,7 +909,7 @@ MaybeObject* Object::GetProperty(String* key, PropertyAttributes* attributes) {
 #else  // V8_TARGET_ARCH_MIPS
   // Prevent gcc from using store-double (mips sdc1) on (possibly)
   // non-64-bit aligned HeapNumber::value.
-  static inline void write_double_field(HeapNumber* p, int offset,
+  static inline void write_double_field(void* p, int offset,
                                         double value) {
     union conversion {
       double d;