forked from Imagelibrary/rtems
50539ba881
This support code is necessary for many Xilinx-provided bare metal device drivers supported on ARM, AArch64, and MicroBlaze platforms. Support for all of these architectures is kept under bsps/include due to multiple architecture variants being supported which requires complex logic in the build system. The imported files are and should be able to remain unmodified. Import information is kept in bsps/shared/xil/VERSION.
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
/******************************************************************************/
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/**
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* Copyright (c) 2015 - 2022 Xilinx, Inc. All rights reserved.
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* SPDX-License-Identifier: MIT
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******************************************************************************/
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/****************************************************************************/
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/**
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* @file xil_mem.c
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*
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* This file contains xil mem copy function to use in case of word aligned
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* data copies.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- -------- -------- -----------------------------------------------
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* 6.1 nsk 11/07/16 First release.
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* 7.7 sk 01/10/22 Update Xil_MemCpy functions variables typecast
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* from int to s32 to fix misra_c_2012_directive_4_6
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* violations.
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* 7.7 sk 01/10/22 Include xil_mem.h header file to fix Xil_MemCpy
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* prototype misra_c_2012_rule_8_4 violation.
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*
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* </pre>
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*
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*****************************************************************************/
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/***************************** Include Files ********************************/
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#include "xil_types.h"
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#include "xil_mem.h"
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/***************** Inline Functions Definitions ********************/
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/*****************************************************************************/
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/**
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* @brief This function copies memory from once location to other.
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*
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* @param dst: pointer pointing to destination memory
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*
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* @param src: pointer pointing to source memory
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*
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* @param cnt: 32 bit length of bytes to be copied
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*
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*****************************************************************************/
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void Xil_MemCpy(void* dst, const void* src, u32 cnt)
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{
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char *d = (char*)(void *)dst;
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const char *s = src;
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while (cnt >= sizeof (s32)) {
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*(s32*)d = *(s32*)s;
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d += sizeof (s32);
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s += sizeof (s32);
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cnt -= sizeof (s32);
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}
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while (cnt >= sizeof (u16)) {
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*(u16*)d = *(u16*)s;
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d += sizeof (u16);
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s += sizeof (u16);
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cnt -= sizeof (u16);
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}
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while ((cnt) > 0U){
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*d = *s;
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d += 1U;
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s += 1U;
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cnt -= 1U;
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}
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}
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