1 files changed, 0 insertions, 127 deletions
diff --git a/arch/cris/arch-v10/lib/checksumcopy.S b/arch/cris/arch-v10/lib/checksumcopy.S
deleted file mode 100644
index b21449cb1ad3..000000000000
--- a/arch/cris/arch-v10/lib/checksumcopy.S
+++ /dev/null
@@ -1,127 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * A fast checksum+copy routine using movem
- * Copyright (c) 1998, 2001 Axis Communications AB
- *
- * Authors:	Bjorn Wesen
- * 
- * csum_partial_copy_nocheck(const char *src, char *dst,
- *		             int len, unsigned int sum)
- */
-
-	.globl	csum_partial_copy_nocheck
-csum_partial_copy_nocheck:	
-	
-	;; r10 - src
-	;; r11 - dst
-	;; r12 - length
-	;; r13 - checksum
-
-	;; check for breakeven length between movem and normal word looping versions
-	;; we also do _NOT_ want to compute a checksum over more than the 
-	;; actual length when length < 40
-	
-	cmpu.w	80, $r12
-	blo	_word_loop
-	nop
-
-	;; need to save the registers we use below in the movem loop
-	;; this overhead is why we have a check above for breakeven length
-	;; only r0 - r8 have to be saved, the other ones are clobber-able
-	;; according to the ABI
-	
-	subq	9*4, $sp
-	movem	$r8, [$sp]
-	
-	;; do a movem copy and checksum
-
-	subq	10*4, $r12	; update length for the first loop
-	
-_mloop:	movem	[$r10+],$r9	; read 10 longwords
-1:	;; A failing userspace access will have this as PC.
-	movem	$r9,[$r11+]	; write 10 longwords
-
-	;; perform dword checksumming on the 10 longwords
-	
-	add.d	$r0,$r13
-	ax
-	add.d	$r1,$r13
-	ax
-	add.d	$r2,$r13
-	ax
-	add.d	$r3,$r13
-	ax
-	add.d	$r4,$r13
-	ax
-	add.d	$r5,$r13
-	ax
-	add.d	$r6,$r13
-	ax
-	add.d	$r7,$r13
-	ax
-	add.d	$r8,$r13
-	ax
-	add.d	$r9,$r13
-
-	;; fold the carry into the checksum, to avoid having to loop the carry
-	;; back into the top
-	
-	ax
-	addq	0,$r13
-
-	subq	10*4,$r12
-	bge	_mloop
-	nop
-
-	addq	10*4,$r12	; compensate for last loop underflowing length
-
-	movem	[$sp+],$r8	; restore regs
-
-_word_loop:
-	;; only fold if there is anything to fold.
-
-	cmpq	0,$r13
-	beq	_no_fold
-
-	;; fold 32-bit checksum into a 16-bit checksum, to avoid carries below
-	;; r9 can be used as temporary.
-	
-	move.d	$r13,$r9
-	lsrq	16,$r9		; r0 = checksum >> 16
-	and.d	0xffff,$r13	; checksum = checksum & 0xffff
-	add.d	$r9,$r13	; checksum += r0
-	
-_no_fold:
-	cmpq	2,$r12
-	blt	_no_words
-	nop
-	
-	;; copy and checksum the rest of the words
-	
-	subq	2,$r12
-	
-_wloop:	move.w	[$r10+],$r9
-2:	;; A failing userspace access will have this as PC.
-	addu.w	$r9,$r13
-	subq	2,$r12
-	bge	_wloop
-	move.w	$r9,[$r11+]
-	
-	addq	2,$r12
-		
-_no_words:
-	;; see if we have one odd byte more
-	cmpq	1,$r12
-	beq	_do_byte
-	nop
-	ret
-	move.d	$r13, $r10
-
-_do_byte:	
-	;; copy and checksum the last byte
-	move.b	[$r10],$r9
-3:	;; A failing userspace access will have this as PC.
-	addu.b	$r9,$r13
-	move.b	$r9,[$r11]
-	ret
-	move.d	$r13, $r10