diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c')
| -rw-r--r-- | roms/edk2/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/roms/edk2/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c b/roms/edk2/CryptoPkg/Library/IntrinsicLib/MemoryIntrinsics.c new file mode 100644 index 000000000..94fe341be --- /dev/null +++ b/roms/edk2/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);
+}
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