linux-stable/arch/sparc/lib/NG4clear_page.S
Geert Uytterhoeven 61daf52c4d sparc64: Add missing newline at end of file
"git diff" says:

    \ No newline at end of file

after modifying the file.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-09 14:53:57 -07:00

30 lines
682 B
ArmAsm

/* SPDX-License-Identifier: GPL-2.0 */
/* NG4copy_page.S: Niagara-4 optimized clear page.
*
* Copyright (C) 2012 (davem@davemloft.net)
*/
#include <asm/asi.h>
#include <asm/page.h>
.text
.register %g3, #scratch
.align 32
.globl NG4clear_page
.globl NG4clear_user_page
NG4clear_page: /* %o0=dest */
NG4clear_user_page: /* %o0=dest, %o1=vaddr */
set PAGE_SIZE, %g7
mov 0x20, %g3
1: stxa %g0, [%o0 + %g0] ASI_ST_BLKINIT_MRU_P
subcc %g7, 0x40, %g7
stxa %g0, [%o0 + %g3] ASI_ST_BLKINIT_MRU_P
bne,pt %xcc, 1b
add %o0, 0x40, %o0
membar #StoreLoad|#StoreStore
retl
nop
.size NG4clear_page,.-NG4clear_page
.size NG4clear_user_page,.-NG4clear_user_page