From b86e8e7e9c4d4191d556a52fbd2c3e614ddb246e Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Mon, 8 Oct 2018 13:31:30 -0400
Subject: Add CryptoPkg/Library/BaseCryptLib/ and CryptoPkg/Library/OpensslLib/

---
 .../BaseCryptLib/SysCall/BaseMemAllocation.c       | 118 +++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 CryptoPkg/Library/BaseCryptLib/SysCall/BaseMemAllocation.c

(limited to 'CryptoPkg/Library/BaseCryptLib/SysCall/BaseMemAllocation.c')

diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/BaseMemAllocation.c b/CryptoPkg/Library/BaseCryptLib/SysCall/BaseMemAllocation.c
new file mode 100644
index 00000000..19c071e2
--- /dev/null
+++ b/CryptoPkg/Library/BaseCryptLib/SysCall/BaseMemAllocation.c
@@ -0,0 +1,118 @@
+/** @file
+  Base Memory Allocation Routines Wrapper for Crypto library over OpenSSL
+  during PEI & DXE phases.
+
+Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <CrtLibSupport.h>
+#include <Library/MemoryAllocationLib.h>
+
+//
+// Extra header to record the memory buffer size from malloc routine.
+//
+#define CRYPTMEM_HEAD_SIGNATURE    SIGNATURE_32('c','m','h','d')
+typedef struct {
+  UINT32    Signature;
+  UINT32    Reserved;
+  UINTN     Size;
+} CRYPTMEM_HEAD;
+
+#define CRYPTMEM_OVERHEAD      sizeof(CRYPTMEM_HEAD)
+
+//
+// -- Memory-Allocation Routines --
+//
+
+/* Allocates memory blocks */
+void *malloc (size_t size)
+{
+  CRYPTMEM_HEAD  *PoolHdr;
+  UINTN          NewSize;
+  VOID           *Data;
+
+  //
+  // Adjust the size by the buffer header overhead
+  //
+  NewSize = (UINTN)(size) + CRYPTMEM_OVERHEAD;
+
+  Data  = AllocatePool (NewSize);
+  if (Data != NULL) {
+    PoolHdr = (CRYPTMEM_HEAD *)Data;
+    //
+    // Record the memory brief information
+    //
+    PoolHdr->Signature = CRYPTMEM_HEAD_SIGNATURE;
+    PoolHdr->Size      = size;
+
+    return (VOID *)(PoolHdr + 1);
+  } else {
+    //
+    // The buffer allocation failed.
+    //
+    return NULL;
+  }
+}
+
+/* Reallocate memory blocks */
+void *realloc (void *ptr, size_t size)
+{
+  CRYPTMEM_HEAD  *OldPoolHdr;
+  CRYPTMEM_HEAD  *NewPoolHdr;
+  UINTN          OldSize;
+  UINTN          NewSize;
+  VOID           *Data;
+
+  NewSize = (UINTN)size + CRYPTMEM_OVERHEAD;
+  Data = AllocatePool (NewSize);
+  if (Data != NULL) {
+    NewPoolHdr = (CRYPTMEM_HEAD *)Data;
+    NewPoolHdr->Signature = CRYPTMEM_HEAD_SIGNATURE;
+    NewPoolHdr->Size      = size;
+    if (ptr != NULL) {
+      //
+      // Retrieve the original size from the buffer header.
+      //
+      OldPoolHdr = (CRYPTMEM_HEAD *)ptr - 1;
+      ASSERT (OldPoolHdr->Signature == CRYPTMEM_HEAD_SIGNATURE);
+      OldSize = OldPoolHdr->Size;
+
+      //
+      // Duplicate the buffer content.
+      //
+      CopyMem ((VOID *)(NewPoolHdr + 1), ptr, MIN (OldSize, size));
+      FreePool ((VOID *)OldPoolHdr);
+    }
+
+    return (VOID *)(NewPoolHdr + 1);
+  } else {
+    //
+    // The buffer allocation failed.
+    //
+    return NULL;
+  }
+}
+
+/* De-allocates or frees a memory block */
+void free (void *ptr)
+{
+  CRYPTMEM_HEAD  *PoolHdr;
+
+  //
+  // In Standard C, free() handles a null pointer argument transparently. This
+  // is not true of FreePool() below, so protect it.
+  //
+  if (ptr != NULL) {
+    PoolHdr = (CRYPTMEM_HEAD *)ptr - 1;
+    ASSERT (PoolHdr->Signature == CRYPTMEM_HEAD_SIGNATURE);
+    FreePool (PoolHdr);
+  }
+}
-- 
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