Make vboot_reference build in MSVC command line environment.

firmware/stub/utility_stub.c

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Stub implementations of utility functions which call their linux-specific
  * equivalents.
  */
 
 #define _STUB_IMPLEMENTATION_
 #include "utility.h"
@@ skipping 30 matching lines @@
 }
 
 void Free(void* ptr) {
   free(ptr);
 }
 
 int Memcmp(const void* src1, const void* src2, size_t n) {
   return memcmp(src1, src2, n);
 }
 
-void* Memcpy(void* dest, const void* src, size_t n) {
-  return memcpy(dest, src, n);
+void* Memcpy(void* dest, const void* src, uint64_t n) {
+  return memcpy(dest, src, (size_t)n);
 }
 
-void* Memset(void* dest, const uint8_t c, size_t n) {
+void* Memset(void* d, const uint8_t c, uint64_t n) {
+  uint8_t *dest = d; /* the only way to keep both cl and gcc happy */
   while (n--) {
-    *((uint8_t*)dest++) = c;
+    *dest++ = c;
   }
   return dest;
 }
 
 int SafeMemcmp(const void* s1, const void* s2, size_t n) {
   int match = 0;
   const unsigned char* us1 = s1;
   const unsigned char* us2 = s2;
   while (n--) {
     if (*us1++ != *us2++)
       match = 1;
   }
 
   return match;
 }