Commit 8721bed0 authored by Mao Minkai's avatar Mao Minkai Committed by guzitao
Browse files

sw64: adjust layout of clear_user.S 

Sunway inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5XTLH



--------------------------------

Adjust layout of clear_user.S to make sure we can get the correct
symbol name when tracing.

Signed-off-by: default avatarMao Minkai <maominkai@wxiat.com>
Reviewed-by: default avatarHe Sheng <hesheng@wxiat.com>
Signed-off-by: default avatarGu Zitao <guzitao@wxiat.com>
parent 6769f44c

arch/sw_64/lib/clear_user.S

+32 −32
Original line number Diff line number Diff line
@@ -27,6 +27,38 @@ 
	.ent __clear_user

	.frame $30, 0, $26

	.prologue 0

__clear_user:

	and	$17, $17, $0

	and	$16, 7, $4

	beq	$0, $zerolength

	addl	$0, $4, $1

	and	$1, 7, $2

	srl	$1, 3, $1

	beq	$4, $loop



	subl	$4, 8, $4

	addl	$0, $4, $0

	beq	$1, $oneword



$head:

	EX(stb $31, 0($16))

	addl	$16, 1, $16

	addl	$4, 1, $4

	bne	$4, $head

	subl	$1, 1, $1

	br	$loop

	unop



$oneword:

	EX(stb $31, 0($16))

	addl	$16, 1, $16

	addl	$4, 1, $4

	bne	$4, $oneword

	clr	$0



$zerolength:

$exception:

	ret	$31, ($26), 1



$loop:

	and	$1, 3, $4
@@ -66,37 +98,5 @@ $tail: 
	clr	$0

	ret	$31, ($26), 1



__clear_user:

	and	$17, $17, $0

	and	$16, 7, $4

	beq	$0, $zerolength

	addl	$0, $4, $1

	and	$1, 7, $2

	srl	$1, 3, $1

	beq	$4, $loop



	subl	$4, 8, $4

	addl	$0, $4, $0

	beq	$1, $oneword



$head:

	EX(stb $31, 0($16))

	addl	$16, 1, $16

	addl	$4, 1, $4

	bne	$4, $head

	subl	$1, 1, $1

	br	$loop

	unop



$oneword:

	EX(stb $31, 0($16))

	addl	$16, 1, $16

	addl	$4, 1, $4

	bne	$4, $oneword

	clr	$0



$zerolength:

$exception:

	ret	$31, ($26), 1

	.end __clear_user

	EXPORT_SYMBOL(__clear_user)