forked from mirror/uv-k5-firmware
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/* Copyright 2023 Dual Tachyon
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* https://github.com/DualTachyon
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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 <stdint.h>
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extern uint8_t overlay_text_start[];
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extern uint8_t overlay_text_end[];
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extern uint8_t overlay_bss_start[];
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extern uint8_t overlay_bss_end[];
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extern uint8_t overlay_data_start[];
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extern uint8_t overlay_data_end[];
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extern const uint8_t sram_overlay_bin[];
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void OVERLAY_Install(void)
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{
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uint8_t *pStart;
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uint8_t *pEnd;
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const uint8_t *pIn;
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uint8_t *pOut;
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// Text
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pStart = overlay_text_start;
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pEnd = overlay_text_end;
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pIn = sram_overlay_bin;
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for (pOut = pStart; pOut < pEnd; ) {
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*pOut++ = *pIn++;
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}
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// Data
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pStart = overlay_data_start;
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pEnd = overlay_data_end;
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pIn = sram_overlay_bin;
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pIn += overlay_data_start - overlay_text_start;
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for (pOut = pStart; pOut < pEnd; ) {
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*pOut++ = *pIn++;
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}
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// BSS
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pStart = overlay_bss_start;
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pEnd = overlay_bss_end;
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for (pOut = pStart; pOut < pEnd; ) {
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*pOut++ = 0;
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}
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}
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