mirror of https://github.com/ARMmbed/mbed-os.git
63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
/* Copyright (c) 2018 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "EMACMemoryManager.h"
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void EMACMemoryManager::copy_to_buf(emac_mem_buf_t *to_buf, const void *ptr, uint32_t len)
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{
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while (to_buf && len) {
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void *copy_to_ptr = get_ptr(to_buf);
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uint32_t copy_to_len = get_len(to_buf);
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if (copy_to_len > len) {
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copy_to_len = len;
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len = 0;
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} else {
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len -= copy_to_len;
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}
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memcpy(copy_to_ptr, ptr, copy_to_len);
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ptr = static_cast<const uint8_t *>(ptr) + copy_to_len;
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to_buf = get_next(to_buf);
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}
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}
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uint32_t EMACMemoryManager::copy_from_buf(void *ptr, uint32_t len, const emac_mem_buf_t *from_buf) const
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{
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uint32_t copied_len = 0;
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while (from_buf && len) {
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void *copy_from_ptr = get_ptr(from_buf);
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uint32_t copy_from_len = get_len(from_buf);
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if (copy_from_len > len) {
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copy_from_len = len;
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len = 0;
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} else {
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len -= copy_from_len;
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}
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memcpy(ptr, copy_from_ptr, copy_from_len);
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ptr = static_cast<uint8_t *>(ptr) + copy_from_len;
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copied_len += copy_from_len;
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from_buf = get_next(from_buf);
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}
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return copied_len;
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}
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