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/** @file
C Run-Time Libraries (CRT) Wrapper Implementation for MbedTLS-based
Cryptographic Library.
Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <stdio.h>
#include <Library/MemoryAllocationLib.h>
int
my_snprintf (
char *str,
size_t size,
const char *format,
...
)
{
return 0;
}
//
// 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 *
mbedtls_calloc (
size_t num,
size_t size
)
{
CRYPTMEM_HEAD *PoolHdr;
UINTN NewSize;
VOID *Data;
//
// Adjust the size by the buffer header overhead
//
NewSize = (UINTN)(size * num) + CRYPTMEM_OVERHEAD;
Data = AllocateZeroPool (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;
}
}
/* De-allocates or frees a memory block */
void
mbedtls_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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