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https://github.com/projectacrn/acrn-hypervisor.git
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7573e436a5
Split common and X86 arch specific codes. For arch without specific memory library,add common library to use. Tracked-On: #8794 Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com> Co-developed-by: Haoyu Tang <haoyu.tang@intel.com> Signed-off-by: Haoyu Tang <haoyu.tang@intel.com> Signed-off-by: Wang, Yu1 <yu1.wang@intel.com> Acked-by: Wang, Yu1 <yu1.wang@intel.com>
69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/*
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* Copyright (C) 2023-2025 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Authors:
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* Haicheng Li <haicheng.li@intel.com>
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*/
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#include <types.h>
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#include <memory.h>
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#ifndef HAS_ARCH_MEMORY_LIB
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void *memset(void *base, uint8_t v, size_t n)
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{
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uint8_t *p = (uint8_t *)base;
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for (size_t i = 0U; i < n; i++) {
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*p++ = v;
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}
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return base;
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}
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void *memset_s(void *base, uint8_t v, size_t n)
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{
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if ((base != NULL) && (n != 0U)) {
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(void)memset(base, v, n);
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}
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return base;
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}
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void memcpy(void *d, const void *s, size_t slen)
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{
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uint8_t *dst = (uint8_t *)d;
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const uint8_t *src = (const uint8_t *)s;
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for (size_t i = 0U; i < slen; i++) {
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*dst++ = *src++;
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}
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}
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void memcpy_backwards(void *d, const void *s, size_t slen)
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{
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uint8_t *dst = (uint8_t *)d + slen - 1;
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const uint8_t *src = (const uint8_t *)s + slen - 1;
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for (size_t i = 0U; i < slen; i++) {
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*dst-- = *src--;
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}
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}
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#endif
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int32_t memcpy_s(void *d, size_t dmax, const void *s, size_t slen)
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{
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int32_t ret = -1;
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if ((d != NULL) && (s != NULL) && (dmax >= slen) && ((d > (s + slen)) || (s > (d + dmax)))) {
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if (slen != 0U) {
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memcpy(d, s, slen);
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}
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ret = 0;
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} else {
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(void)memset(d, 0U, dmax);
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}
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return ret;
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}
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