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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#include <asm/asm.h>
#include <asm/asmmacro.h>
#include <asm/asm-extable.h>
#include <asm/export.h>
#include <asm/regdef.h>
.irp to, 0
.L_fixup_handle_\to\():
addi.d a0, a2, (\to) * (-8)
jr ra
.endr
/*
* unsigned long __copy_user(void *to, const void *from, size_t n)
*
* a0: to
* a1: from
* a2: n
*/
SYM_FUNC_START(__copy_user)
beqz a2, 3f
1: ld.b t0, a1, 0
2: st.b t0, a0, 0
addi.d a0, a0, 1
addi.d a1, a1, 1
addi.d a2, a2, -1
bgtz a2, 1b
3: move a0, a2
jr ra
_asm_extable 1b, .L_fixup_handle_0
_asm_extable 2b, .L_fixup_handle_0
SYM_FUNC_END(__copy_user)
EXPORT_SYMBOL(__copy_user)
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