MdeModulePkg/DxeCore: Filter out all paging capabilities

[mirror_edk2.git] / CryptoPkg / Library / IntrinsicLib / MemoryIntrinsics.c

diff --git a/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c b/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c
index 48e0c52c369ace4413b5af06da14feaa4038b1cf..bf485d680def90ba7a6c6cd6a6a9d37fa960a3bc 100644 (file)
--- a/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c
+++ b/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c
@@ -2,7 +2,7 @@
   Intrinsic Memory Routines Wrapper Implementation for OpenSSL-based\r
   Cryptographic Library.\r
 \r
-Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>\r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
@@ -15,13 +15,46 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 \r
 #include <Base.h>\r
 #include <Library/BaseMemoryLib.h>\r
+#include <Library/BaseLib.h>\r
+\r
+typedef UINTN  size_t;\r
 \r
 /* OpenSSL will use floating point support, and C compiler produces the _fltused\r
    symbol by default. Simply define this symbol here to satisfy the linker. */\r
 int _fltused = 1;\r
 \r
 /* Sets buffers to a specified character */\r
-void * memset (void *dest, char ch, unsigned int count)\r
+void * memset (void *dest, char ch, size_t count)\r
+{\r
+  //\r
+  // NOTE: Here we use one base implementation for memset, instead of the direct\r
+  //       optimized SetMem() wrapper. Because the IntrinsicLib has to be built \r
+  //       without whole program optimization option, and there will be some \r
+  //       potential register usage errors when calling other optimized codes.\r
+  //\r
+\r
+  //\r
+  // Declare the local variables that actually move the data elements as\r
+  // volatile to prevent the optimizer from replacing this function with\r
+  // the intrinsic memset()\r
+  //\r
+  volatile UINT8  *Pointer;\r
+\r
+  Pointer = (UINT8 *)dest;\r
+  while (count-- != 0) {\r
+    *(Pointer++) = ch;\r
+  }\r
+  \r
+  return dest;\r
+}\r
+\r
+/* Compare bytes in two buffers. */\r
+int memcmp (const void *buf1, const void *buf2, size_t count)\r
+{\r
+  return (int)CompareMem(buf1, buf2, count);\r
+}\r
+\r
+int strcmp (const char *s1, const char *s2)\r
 {\r
-  return SetMem (dest, (UINTN)count, (UINT8)ch);\r
+  return (int)AsciiStrCmp(s1, s2);\r
 }\r