/* SPDX-License-Identifier: GPL-2.0-only */ /* * linux/arch/unicore32/lib/copy_page.S * * Code specific to PKUnity SoC and UniCore ISA * * Copyright (C) 2001-2010 GUAN Xue-tao * * ASM optimised string functions */ #include #include #include #include #define COPY_COUNT (PAGE_SZ/256) .text .align 5 /* * UniCore optimised copy_page routine */ ENTRY(copy_page) stm.w (r17 - r19, lr), [sp-] mov r17, r0 mov r18, r1 mov r19, #COPY_COUNT 1: .rept 4 ldm.w (r0 - r15), [r18]+ stm.w (r0 - r15), [r17]+ .endr sub.a r19, r19, #1 bne 1b ldm.w (r17 - r19, pc), [sp]+ ENDPROC(copy_page)