StatefulMem* functions should be library functions.

src/platform/vboot_reference/vboot_firmware/stub/utility_stub.c

Index: src/platform/vboot_reference/vboot_firmware/stub/utility_stub.c
diff --git a/src/platform/vboot_reference/vboot_firmware/stub/utility_stub.c b/src/platform/vboot_reference/vboot_firmware/stub/utility_stub.c
index 7a028e7bec68dc9b9b67dd45371749a4746768b5..3a538100ab28ec30c157cba93dbc138431648ecb 100644
--- a/src/platform/vboot_reference/vboot_firmware/stub/utility_stub.c
+++ b/src/platform/vboot_reference/vboot_firmware/stub/utility_stub.c
@@ -6,6 +6,7 @@
  * equivalents.
  */
 
+#define _STUB_IMPLEMENTATION_
 #include "utility.h"
 
 #include <stdarg.h>
@@ -68,45 +69,3 @@ int SafeMemcmp(const void* s1, const void* s2, size_t n) {
 
   return match;
 }
-
-void* StatefulMemcpy(MemcpyState* state, void* dst,
-                     uint64_t len) {
-  if (state->overrun)
-    return NULL;
-  if (len > state->remaining_len) {
-    state->overrun = 1;
-    return NULL;
-  }
-  Memcpy(dst, state->remaining_buf, len);
-  state->remaining_buf += len;
-  state->remaining_len -= len;
-  return dst;
-}
-
-const void* StatefulMemcpy_r(MemcpyState* state, const void* src,
-                             uint64_t len) {
-  if (state->overrun)
-    return NULL;
-  if (len > state->remaining_len) {
-    state->overrun = 1;
-    return NULL;
-  }
-  Memcpy(state->remaining_buf, src, len);
-  state->remaining_buf += len;
-  state->remaining_len -= len;
-  return src;
-}
-
-const void* StatefulMemset_r(MemcpyState* state, const uint8_t val,
-                             uint64_t len) {
-  if (state->overrun)
-    return NULL;
-  if (len > state->remaining_len) {
-    state->overrun = 1;
-    return NULL;
-  }
-  Memset(state->remaining_buf, val, len);
-  state->remaining_buf += len;
-  state->remaining_len -= len;
-  return state;                         // have to return something non-NULL
-}