1 files changed, 60 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c b/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c
new file mode 100644
index 00000000..25c3cc35
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c
@@ -0,0 +1,60 @@
+/** @file
+  Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based
+  Cryptographic Library.
+
+Copyright (c) 2010 - 2019, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/BaseLib.h>
+
+typedef UINTN  size_t;
+
+#if defined(__GNUC__) || defined(__clang__)
+  #define GLOBAL_USED __attribute__((used))
+#else
+  #define GLOBAL_USED
+#endif
+
+/* OpenSSL will use floating point support, and C compiler produces the _fltused
+   symbol by default. Simply define this symbol here to satisfy the linker. */
+int  GLOBAL_USED _fltused = 1;
+
+/* Sets buffers to a specified character */
+void * memset (void *dest, int ch, size_t count)
+{
+  //
+  // NOTE: Here we use one base implementation for memset, instead of the direct
+  //       optimized SetMem() wrapper. Because the IntrinsicLib has to be built
+  //       without whole program optimization option, and there will be some
+  //       potential register usage errors when calling other optimized codes.
+  //
+
+  //
+  // Declare the local variables that actually move the data elements as
+  // volatile to prevent the optimizer from replacing this function with
+  // the intrinsic memset()
+  //
+  volatile UINT8  *Pointer;
+
+  Pointer = (UINT8 *)dest;
+  while (count-- != 0) {
+    *(Pointer++) = (UINT8)ch;
+  }
+
+  return dest;
+}
+
+/* Compare bytes in two buffers. */
+int memcmp (const void *buf1, const void *buf2, size_t count)
+{
+  return (int)CompareMem(buf1, buf2, count);
+}
+
+int strcmp (const char *s1, const char *s2)
+{
+  return (int)AsciiStrCmp(s1, s2);
+}