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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2024 Rivos Inc. */
#include <linux/args.h>
#include <linux/linkage.h>
#include <asm/asm.h>
.text
#define WORD_EEW 32
#define WORD_SEW CONCATENATE(e, WORD_EEW)
#define VEC_L CONCATENATE(vle, WORD_EEW).v
#define VEC_S CONCATENATE(vle, WORD_EEW).v
/* void __riscv_copy_vec_words_unaligned(void *, const void *, size_t) */
/* Performs a memcpy without aligning buffers, using word loads and stores. */
/* Note: The size is truncated to a multiple of WORD_EEW */
SYM_FUNC_START(__riscv_copy_vec_words_unaligned)
andi a4, a2, ~(WORD_EEW-1)
beqz a4, 2f
add a3, a1, a4
.option push
.option arch, +zve32x
1:
vsetivli t0, 8, WORD_SEW, m8, ta, ma
VEC_L v0, (a1)
VEC_S v0, (a0)
addi a0, a0, WORD_EEW
addi a1, a1, WORD_EEW
bltu a1, a3, 1b
2:
.option pop
ret
SYM_FUNC_END(__riscv_copy_vec_words_unaligned)
/* void __riscv_copy_vec_bytes_unaligned(void *, const void *, size_t) */
/* Performs a memcpy without aligning buffers, using only byte accesses. */
/* Note: The size is truncated to a multiple of 8 */
SYM_FUNC_START(__riscv_copy_vec_bytes_unaligned)
andi a4, a2, ~(8-1)
beqz a4, 2f
add a3, a1, a4
.option push
.option arch, +zve32x
1:
vsetivli t0, 8, e8, m8, ta, ma
vle8.v v0, (a1)
vse8.v v0, (a0)
addi a0, a0, 8
addi a1, a1, 8
bltu a1, a3, 1b
2:
.option pop
ret
SYM_FUNC_END(__riscv_copy_vec_bytes_unaligned)
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