mirror of https://github.com/acidanthera/audk.git
97 lines
1.9 KiB
C
97 lines
1.9 KiB
C
/** @file
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C Run-Time Libraries (CRT) Wrapper Implementation for MbedTLS-based
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Cryptographic Library.
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Copyright (c) 2023, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <stdio.h>
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#include <Library/MemoryAllocationLib.h>
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int
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my_snprintf (
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char *str,
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size_t size,
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const char *format,
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...
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)
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{
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return 0;
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}
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//
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// Extra header to record the memory buffer size from malloc routine.
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//
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#define CRYPTMEM_HEAD_SIGNATURE SIGNATURE_32('c','m','h','d')
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typedef struct {
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UINT32 Signature;
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UINT32 Reserved;
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UINTN Size;
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} CRYPTMEM_HEAD;
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#define CRYPTMEM_OVERHEAD sizeof(CRYPTMEM_HEAD)
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//
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// -- Memory-Allocation Routines --
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//
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/* Allocates memory blocks */
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void *
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mbedtls_calloc (
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size_t num,
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size_t size
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)
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{
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CRYPTMEM_HEAD *PoolHdr;
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UINTN NewSize;
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VOID *Data;
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//
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// Adjust the size by the buffer header overhead
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//
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NewSize = (UINTN)(size * num) + CRYPTMEM_OVERHEAD;
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Data = AllocateZeroPool (NewSize);
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if (Data != NULL) {
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PoolHdr = (CRYPTMEM_HEAD *)Data;
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//
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// Record the memory brief information
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//
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PoolHdr->Signature = CRYPTMEM_HEAD_SIGNATURE;
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PoolHdr->Size = size;
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return (VOID *)(PoolHdr + 1);
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} else {
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//
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// The buffer allocation failed.
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//
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return NULL;
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}
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}
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/* De-allocates or frees a memory block */
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void
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mbedtls_free (
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void *ptr
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)
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{
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CRYPTMEM_HEAD *PoolHdr;
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//
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// In Standard C, free() handles a null pointer argument transparently. This
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// is not true of FreePool() below, so protect it.
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//
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if (ptr != NULL) {
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PoolHdr = (CRYPTMEM_HEAD *)ptr - 1;
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ASSERT (PoolHdr->Signature == CRYPTMEM_HEAD_SIGNATURE);
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FreePool (PoolHdr);
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}
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}
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