arch: remove m32r port

The Mitsubishi/Renesas m32r architecture has been around for many years,
but the Linux port has been obsolete for a very long time as well, with
the last significant updates done for linux-2.6.14.

While some m32r microcontrollers are still being marketed by Renesas,
those are apparently no longer possible to support, mainly due to the
lack of an external memory interface.

Hirokazu Takata was the maintainer until the architecture got marked
Orphaned in 2014.

Link: http://www.linux-m32r.org/
Link: https://www.renesas.com/en-eu/products/microcontrollers-microprocessors/m32r.html
Cc: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

11 files changed, 0 insertions, 1604 deletions

diff --git a/arch/m32r/lib/Makefile b/arch/m32r/lib/Makefile
deleted file mode 100644
index 5889eb9610b5..000000000000
--- a/arch/m32r/lib/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-#
-# Makefile for M32R-specific library files..
-#
-
-lib-y  := checksum.o ashxdi3.o memset.o memcpy.o \
-	  delay.o strlen.o usercopy.o csum_partial_copy.o \
-	  ucmpdi2.o
diff --git a/arch/m32r/lib/ashxdi3.S b/arch/m32r/lib/ashxdi3.S
deleted file mode 100644
index cd1acca53911..000000000000
--- a/arch/m32r/lib/ashxdi3.S
+++ /dev/null
@@ -1,294 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * linux/arch/m32r/lib/ashxdi3.S
- *
- * Copyright (C) 2001,2002  Hiroyuki Kondo, and Hirokazu Takata
- *
- */
-
-;
-;      input   (r0,r1)  src
-;      input    r2      shift val
-;               r3      scratch
-;      output  (r0,r1)
-;
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-#ifndef __LITTLE_ENDIAN__
-
-	.text
-	.align	4
-	.globl __ashrdi3
-__ashrdi3:
-	cmpz	r2		    ||	ldi	r3, #32
-	jc	r14		    ||	cmpu	r2, r3
-	bc      1f
-    ;   case 32 =< shift
-	mv      r1, r0		    ||	srai    r0, #31
-	addi    r2, #-32
-	sra     r1, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r0		    ||	srl     r1, r2
-	sra     r0, r2		    ||	neg     r2, r2
-	sll     r3, r2
-	or      r1, r3		    ||	jmp	r14
-
-        .align  4
-        .globl __ashldi3
-        .globl __lshldi3
-__ashldi3:
-__lshldi3:
-	cmpz	r2		    ||	ldi	r3, #32
-	jc	r14		    ||	cmpu	r2, r3
-	bc      1f
-    ;   case 32 =< shift
-	mv      r0, r1		    ||	addi    r2, #-32
-	sll     r0, r2		    ||	ldi     r1, #0
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r1		    ||	sll     r0, r2
-	sll     r1, r2		    ||	neg     r2, r2
-	srl     r3, r2
-	or      r0, r3		    ||	jmp	r14
-
-	.align	4
-	.globl __lshrdi3
-__lshrdi3:
-	cmpz	r2		    ||	ldi	r3, #32
-	jc	r14		    ||	cmpu	r2, r3
-	bc      1f
-    ;   case 32 =< shift
-	mv      r1, r0		    ||	addi    r2, #-32
-	ldi	r0, #0		    ||	srl     r1, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r0		    ||	srl     r1, r2
-	srl     r0, r2		    ||	neg     r2, r2
-	sll     r3, r2
-	or      r1, r3		    ||	jmp	r14
-
-#else /* LITTLE_ENDIAN */
-
-	.text
-	.align	4
-	.globl __ashrdi3
-__ashrdi3:
-	cmpz	r2		    ||	ldi	r3, #32
-	jc	r14		    ||	cmpu	r2, r3
-	bc      1f
-    ;   case 32 =< shift
-	mv      r0, r1		    ||	srai    r1, #31
-	addi    r2, #-32
-	sra     r0, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r1		    ||	srl     r0, r2
-	sra     r1, r2		    ||	neg     r2, r2
-	sll     r3, r2
-	or      r0, r3		    ||	jmp	r14
-
-        .align  4
-        .globl __ashldi3
-        .globl __lshldi3
-__ashldi3:
-__lshldi3:
-	cmpz	r2		    ||	ldi	r3, #32
-	jc	r14		    ||	cmpu	r2, r3
-	bc      1f
-    ;   case 32 =< shift
-	mv      r1, r0		    ||	addi    r2, #-32
-	sll     r1, r2		    ||	ldi     r0, #0
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r0		    ||	sll     r1, r2
-	sll     r0, r2		    ||	neg     r2, r2
-	srl     r3, r2
-	or      r1, r3		    ||	jmp	r14
-
-	.align	4
-	.globl __lshrdi3
-__lshrdi3:
-	cmpz	r2		    ||	ldi	r3, #32
-	jc	r14		    ||	cmpu	r2, r3
-	bc      1f
-    ;   case 32 =< shift
-	mv      r0, r1		    ||	addi    r2, #-32
-	ldi	r1, #0		    ||	srl     r0, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r1		    ||	srl     r0, r2
-	srl     r1, r2		    ||	neg     r2, r2
-	sll     r3, r2
-	or      r0, r3		    ||	jmp	r14
-
-#endif
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-#ifndef __LITTLE_ENDIAN__
-
-	.text
-	.align	4
-	.globl __ashrdi3
-__ashrdi3:
-	beqz	r2, 2f
-	cmpui   r2, #32
-	bc      1f
-    ;   case 32 =< shift
-	mv      r1, r0
-	srai    r0, #31
-	addi    r2, #-32
-	sra     r1, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r0
-	srl     r1, r2
-	sra     r0, r2
-	neg     r2, r2
-	sll     r3, r2
-	or      r1, r3
-	.fillinsn
-2:
-	jmp	r14
-
-        .align  4
-        .globl __ashldi3
-        .globl __lshldi3
-__ashldi3:
-__lshldi3:
-	beqz	r2, 2f
-	cmpui   r2, #32
-	bc      1f
-    ;   case 32 =< shift
-	mv      r0, r1
-	addi    r2, #-32
-	sll     r0, r2
-	ldi     r1, #0
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r1
-	sll     r0, r2
-	sll     r1, r2
-	neg     r2, r2
-	srl     r3, r2
-	or      r0, r3
-	.fillinsn
-2:
-	jmp	r14
-
-	.align	4
-	.globl __lshrdi3
-__lshrdi3:
-	beqz	r2, 2f
-	cmpui   r2, #32
-	bc      1f
-    ;   case 32 =< shift
-	mv      r1, r0
-	ldi	r0, #0
-	addi    r2, #-32
-	srl     r1, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r0
-	srl     r1, r2
-	srl     r0, r2
-	neg     r2, r2
-	sll     r3, r2
-	or      r1, r3
-	.fillinsn
-2:
-	jmp	r14
-
-#else
-
-	.text
-	.align	4
-	.globl __ashrdi3
-__ashrdi3:
-	beqz	r2, 2f
-	cmpui   r2, #32
-	bc      1f
-    ;   case 32 =< shift
-	mv      r0, r1
-	srai    r1, #31
-	addi    r2, #-32
-	sra     r0, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r1
-	srl     r0, r2
-	sra     r1, r2
-	neg     r2, r2
-	sll     r3, r2
-	or      r0, r3
-	.fillinsn
-2:
-	jmp	r14
-
-        .align  4
-        .globl __ashldi3
-        .globl __lshldi3
-__ashldi3:
-__lshldi3:
-	beqz	r2, 2f
-	cmpui   r2, #32
-	bc      1f
-    ;   case 32 =< shift
-	mv      r1, r0
-	addi    r2, #-32
-	sll     r1, r2
-	ldi     r0, #0
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r0
-	sll     r1, r2
-	sll     r0, r2
-	neg     r2, r2
-	srl     r3, r2
-	or      r1, r3
-	.fillinsn
-2:
-	jmp	r14
-
-	.align	4
-	.globl __lshrdi3
-__lshrdi3:
-	beqz	r2, 2f
-	cmpui   r2, #32
-	bc      1f
-    ;   case 32 =< shift
-	mv      r0, r1
-	ldi	r1, #0
-	addi    r2, #-32
-	srl     r0, r2
-	jmp     r14
-	.fillinsn
-1:  ;   case shift <32
-	mv      r3, r1
-	srl     r0, r2
-	srl     r1, r2
-	neg     r2, r2
-	sll     r3, r2
-	or      r0, r3
-	.fillinsn
-2:
-	jmp	r14
-
-#endif
-
-#endif /* not CONFIG_ISA_DUAL_ISSUE */
-
-	.end
diff --git a/arch/m32r/lib/checksum.S b/arch/m32r/lib/checksum.S
deleted file mode 100644
index 0af0360c76d9..000000000000
--- a/arch/m32r/lib/checksum.S
+++ /dev/null
@@ -1,320 +0,0 @@
-/*
- * INET		An implementation of the TCP/IP protocol suite for the LINUX
- *		operating system.  INET is implemented using the  BSD Socket
- *		interface as the means of communication with the user level.
- *
- *		IP/TCP/UDP checksumming routines
- *
- * Authors:	Jorge Cwik, <jorge@laser.satlink.net>
- *		Arnt Gulbrandsen, <agulbra@nvg.unit.no>
- *		Tom May, <ftom@netcom.com>
- *              Pentium Pro/II routines:
- *              Alexander Kjeldaas <astor@guardian.no>
- *              Finn Arne Gangstad <finnag@guardian.no>
- *		Lots of code moved from tcp.c and ip.c; see those files
- *		for more names.
- *
- * Changes:     Ingo Molnar, converted csum_partial_copy() to 2.1 exception
- *			     handling.
- *		Andi Kleen,  add zeroing on error
- *                   converted to pure assembler
- *		Hirokazu Takata,Hiroyuki Kondo rewrite for the m32r architecture.
- *
- *		This program is free software; you can redistribute it and/or
- *		modify it under the terms of the GNU General Public License
- *		as published by the Free Software Foundation; either version
- *		2 of the License, or (at your option) any later version.
- */
-
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-#include <asm/errno.h>
-
-/*
- * computes a partial checksum, e.g. for TCP/UDP fragments
- */
-
-/*
-unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
- */
-
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-	/*
-	 * Experiments with Ethernet and SLIP connections show that buff
-	 * is aligned on either a 2-byte or 4-byte boundary.  We get at
-	 * least a twofold speedup on 486 and Pentium if it is 4-byte aligned.
-	 * Fortunately, it is easy to convert 2-byte alignment to 4-byte
-	 * alignment for the unrolled loop.
-	 */
-
-	.text
-ENTRY(csum_partial)
-	; Function args
-	;  r0: unsigned char *buff
-	;  r1: int len
-	;  r2: unsigned int sum
-
-	push	r2		    ||	ldi	r2, #0
-	and3	r7, r0, #1		; Check alignment.
-	beqz	r7, 1f	 		; Jump if alignment is ok.
-	; 1-byte mis aligned
-	ldub	r4, @r0		    ||	addi	r0, #1
-	; clear c-bit || Alignment uses up bytes.
-	cmp	r0, r0		    ||	addi	r1, #-1
-	ldi	r3, #0		    ||	addx	r2, r4
-	addx	r2, r3
-	.fillinsn
-1:
-	and3	r4, r0, #2		; Check alignment.
-	beqz	r4, 2f	 		; Jump if alignment is ok.
-	; clear c-bit || Alignment uses up two bytes.
-	cmp	r0, r0		    ||	addi	r1, #-2
-	bgtz	r1, 1f			; Jump if we had at least two bytes.
-	bra	4f		    ||	addi	r1, #2
-	.fillinsn			; len(r1) was < 2.  Deal with it.
-1:
-	; 2-byte aligned
-	lduh	r4, @r0		    ||	ldi	r3, #0
-	addx	r2, r4		    ||	addi	r0, #2
-	addx	r2, r3
-	.fillinsn
-2:
-	; 4-byte aligned
-	cmp	r0, r0			; clear c-bit
-	srl3	r6, r1, #5
-	beqz	r6, 2f
-	.fillinsn
-
-1:	ld	r3, @r0+
-	ld	r4, @r0+					; +4
-	ld	r5, @r0+					; +8
-	ld	r3, @r0+	    ||	addx    r2, r3		; +12
-	ld	r4, @r0+	    ||	addx    r2, r4		; +16
-	ld	r5, @r0+	    ||	addx    r2, r5		; +20
-	ld	r3, @r0+	    ||	addx    r2, r3		; +24
-	ld	r4, @r0+	    ||	addx    r2, r4		; +28
-	addx	r2, r5		    ||	addi	r6, #-1
-	addx	r2, r3
-	addx	r2, r4
-	bnez	r6, 1b
-
-	addx	r2, r6			; r6=0
-	cmp	r0, r0			; This clears c-bit
-	.fillinsn
-2:	and3	r6, r1, #0x1c		; withdraw len
-	beqz	r6, 4f
-	srli	r6, #2
-	.fillinsn
-
-3:	ld	r4, @r0+	    ||	addi	r6, #-1
-	addx	r2, r4
-	bnez	r6, 3b
-
-	addx	r2, r6			; r6=0
-	cmp	r0, r0			; This clears c-bit
-	.fillinsn
-4:	and3	r1, r1, #3
-	beqz	r1, 7f			; if len == 0 goto end
-	and3	r6, r1, #2
-	beqz	r6, 5f			; if len < 2  goto 5f(1byte)
-	lduh	r4, @r0		    ||	addi	r0, #2
-	addi	r1, #-2		    ||	slli    r4, #16
-	addx	r2, r4
-	beqz	r1, 6f
-	.fillinsn
-5:	ldub	r4, @r0		    ||	ldi	r1, #0
-#ifndef __LITTLE_ENDIAN__
-	slli    r4, #8
-#endif
-	addx	r2, r4
-	.fillinsn
-6:	addx	r2, r1
-	.fillinsn
-7:
-	and3	r0, r2, #0xffff
-	srli	r2, #16
-	add	r0, r2
-	srl3	r2, r0, #16
-	beqz	r2, 1f
-	addi	r0, #1
-	and3	r0, r0, #0xffff
-	.fillinsn
-1:
-	beqz	r7, 1f			; swap the upper byte for the lower
-	and3	r2, r0, #0xff
-	srl3	r0, r0, #8
-	slli	r2, #8
-	or	r0, r2
-	.fillinsn
-1:
-	pop	r2		    ||	cmp	r0, r0
-	addx	r0, r2		    ||	ldi	r2, #0
-	addx	r0, r2
-	jmp	r14
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-	/*
-	 * Experiments with Ethernet and SLIP connections show that buff
-	 * is aligned on either a 2-byte or 4-byte boundary.  We get at
-	 * least a twofold speedup on 486 and Pentium if it is 4-byte aligned.
-	 * Fortunately, it is easy to convert 2-byte alignment to 4-byte
-	 * alignment for the unrolled loop.
-	 */
-
-	.text
-ENTRY(csum_partial)
-	; Function args
-	;  r0: unsigned char *buff
-	;  r1: int len
-	;  r2: unsigned int sum
-
-	push	r2
-	ldi	r2, #0
-	and3	r7, r0, #1		; Check alignment.
-	beqz	r7, 1f	 		; Jump if alignment is ok.
-	; 1-byte mis aligned
-	ldub	r4, @r0
-	addi	r0, #1
-	addi	r1, #-1			; Alignment uses up bytes.
-	cmp	r0, r0			; clear c-bit
-	ldi	r3, #0
-	addx	r2, r4
-	addx	r2, r3
-	.fillinsn
-1:
-	and3	r4, r0, #2		; Check alignment.
-	beqz	r4, 2f	 		; Jump if alignment is ok.
-	addi	r1, #-2			; Alignment uses up two bytes.
-	cmp		r0, r0			; clear c-bit
-	bgtz	r1, 1f			; Jump if we had at least two bytes.
-	addi	r1, #2			; len(r1) was < 2.  Deal with it.
-	bra	4f
-	.fillinsn
-1:
-	; 2-byte aligned
-	lduh	r4, @r0
-	addi	r0, #2
-	ldi		r3, #0
-	addx	r2, r4
-	addx	r2, r3
-	.fillinsn
-2:
-	; 4-byte aligned
-	cmp	r0, r0			; clear c-bit
-	srl3	r6, r1, #5
-	beqz	r6, 2f
-	.fillinsn
-
-1:	ld	r3, @r0+
-	ld	r4, @r0+		; +4
-	ld	r5, @r0+		; +8
-	addx	r2, r3
-	addx	r2, r4
-	addx	r2, r5
-	ld	r3, @r0+		; +12
-	ld	r4, @r0+		; +16
-	ld	r5, @r0+		; +20
-	addx	r2, r3
-	addx	r2, r4
-	addx	r2, r5
-	ld	r3, @r0+		; +24
-	ld	r4, @r0+		; +28
-	addi	r6, #-1
-	addx	r2, r3
-	addx	r2, r4
-	bnez	r6, 1b
-	addx	r2, r6			; r6=0
-	cmp	r0, r0			; This clears c-bit
-	.fillinsn
-
-2:	and3	r6, r1, #0x1c		; withdraw len
-	beqz	r6, 4f
-	srli	r6, #2
-	.fillinsn
-
-3:	ld	r4, @r0+
-	addi	r6, #-1
-	addx	r2, r4
-	bnez	r6, 3b
-	addx	r2, r6			; r6=0
-	cmp	r0, r0			; This clears c-bit
-	.fillinsn
-
-4:	and3	r1, r1, #3
-	beqz	r1, 7f			; if len == 0 goto end
-	and3	r6, r1, #2
-	beqz	r6, 5f			; if len < 2  goto 5f(1byte)
-
-	lduh	r4, @r0
-	addi	r0, #2
-	addi	r1, #-2
-	slli    r4, #16
-	addx	r2, r4
-	beqz	r1, 6f
-	.fillinsn
-5:	ldub	r4, @r0
-#ifndef __LITTLE_ENDIAN__
-	slli    r4, #8
-#endif
-	addx	r2, r4
-	.fillinsn
-6:	ldi	r5, #0
-	addx	r2, r5
-	.fillinsn
-7:
-	and3	r0, r2, #0xffff
-	srli	r2, #16
-	add	r0, r2
-	srl3	r2, r0, #16
-	beqz	r2, 1f
-	addi	r0, #1
-	and3	r0, r0, #0xffff
-	.fillinsn
-1:
-	beqz	r7, 1f
-	mv	r2, r0
-	srl3	r0, r2, #8
-	and3	r2, r2, #0xff
-	slli	r2, #8
-	or	r0, r2
-	.fillinsn
-1:
-	pop	r2
-	cmp	r0, r0
-	addx	r0, r2
-	ldi	r2, #0
-	addx	r0, r2
-	jmp	r14
-
-#endif /* not CONFIG_ISA_DUAL_ISSUE */
-
-/*
-unsigned int csum_partial_copy_generic (const char *src, char *dst,
-				  int len, int sum, int *src_err_ptr, int *dst_err_ptr)
- */
-
-/*
- * Copy from ds while checksumming, otherwise like csum_partial
- *
- * The macros SRC and DST specify the type of access for the instruction.
- * thus we can call a custom exception handler for all access types.
- *
- * FIXME: could someone double-check whether I haven't mixed up some SRC and
- *	  DST definitions? It's damn hard to trigger all cases.  I hope I got
- *	  them all but there's no guarantee.
- */
-
-ENTRY(csum_partial_copy_generic)
-	nop
-	nop
-	nop
-	nop
-	jmp r14
-	nop
-	nop
-	nop
-
-	.end
diff --git a/arch/m32r/lib/csum_partial_copy.c b/arch/m32r/lib/csum_partial_copy.c
deleted file mode 100644
index b3cd59c12b8e..000000000000
--- a/arch/m32r/lib/csum_partial_copy.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * INET		An implementation of the TCP/IP protocol suite for the LINUX
- *		operating system.  INET is implemented using the  BSD Socket
- *		interface as the means of communication with the user level.
- *
- *		M32R specific IP/TCP/UDP checksumming routines
- *		(Some code taken from MIPS architecture)
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1994, 1995  Waldorf Electronics GmbH
- * Copyright (C) 1998, 1999  Ralf Baechle
- * Copyright (C) 2001-2005  Hiroyuki Kondo, Hirokazu Takata
- *
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/string.h>
-
-#include <net/checksum.h>
-#include <asm/byteorder.h>
-#include <linux/uaccess.h>
-
-/*
- * Copy while checksumming, otherwise like csum_partial
- */
-__wsum
-csum_partial_copy_nocheck (const void *src, void *dst, int len, __wsum sum)
-{
-	sum = csum_partial(src, len, sum);
-	memcpy(dst, src, len);
-
-	return sum;
-}
-EXPORT_SYMBOL(csum_partial_copy_nocheck);
-
-/*
- * Copy from userspace and compute checksum.  If we catch an exception
- * then zero the rest of the buffer.
- */
-__wsum
-csum_partial_copy_from_user (const void __user *src, void *dst,
-			     int len, __wsum sum, int *err_ptr)
-{
-	int missing;
-
-	missing = copy_from_user(dst, src, len);
-	if (missing) {
-		memset(dst + len - missing, 0, missing);
-		*err_ptr = -EFAULT;
-	}
-
-	return csum_partial(dst, len-missing, sum);
-}
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-EXPORT_SYMBOL(csum_partial);
diff --git a/arch/m32r/lib/delay.c b/arch/m32r/lib/delay.c
deleted file mode 100644
index ae1fe90892f9..000000000000
--- a/arch/m32r/lib/delay.c
+++ /dev/null
@@ -1,130 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/m32r/lib/delay.c
- *
- * Copyright (c) 2002  Hitoshi Yamamoto, Hirokazu Takata
- * Copyright (c) 2004  Hirokazu Takata
- */
-
-#include <linux/param.h>
-#include <linux/module.h>
-#ifdef CONFIG_SMP
-#include <linux/sched.h>
-#include <asm/current.h>
-#include <asm/smp.h>
-#endif  /* CONFIG_SMP */
-#include <asm/processor.h>
-
-void __delay(unsigned long loops)
-{
-#ifdef CONFIG_ISA_DUAL_ISSUE
-	__asm__ __volatile__ (
-		"beqz	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-
-		" .fillinsn			\n\t"
-		"1:				\n\t"
-		"cmpz	%0  ||  addi  %0, #-1	\n\t"
-		"bc	2f  ||  cmpz  %0	\n\t"
-		"bc	2f  ||  addi  %0, #-1	\n\t"
-		"cmpz	%0  ||  addi  %0, #-1	\n\t"
-		"bc	2f  ||  cmpz  %0	\n\t"
-		"bnc	1b  ||  addi  %0, #-1	\n\t"
-		" .fillinsn			\n\t"
-		"2:				\n\t"
-		: "+r" (loops)
-		: "r" (0)
-		: "cbit"
-	);
-#else
-	__asm__ __volatile__ (
-		"beqz	%0, 2f			\n\t"
-		" .fillinsn			\n\t"
-		"1:				\n\t"
-		"addi	%0, #-1			\n\t"
-		"blez	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-		"blez	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-		"blez	%0, 2f			\n\t"
-		"addi	%0, #-1			\n\t"
-		"bgtz	%0, 1b			\n\t"
-		" .fillinsn			\n\t"
-		"2:				\n\t"
-		: "+r" (loops)
-		: "r" (0)
-	);
-#endif
-}
-
-void __const_udelay(unsigned long xloops)
-{
-#if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2)
-	/*
-	 * loops [1] = (xloops >> 32) [sec] * loops_per_jiffy [1/jiffy]
-	 *            * HZ [jiffy/sec]
-	 *          = (xloops >> 32) [sec] * (loops_per_jiffy * HZ) [1/sec]
-	 *          = (((xloops * loops_per_jiffy) >> 32) * HZ) [1]
-	 *
-	 * NOTE:
-	 *   - '[]' depicts variable's dimension in the above equation.
-	 *   - "rac" instruction rounds the accumulator in word size.
-	 */
-	__asm__ __volatile__ (
-		"srli	%0, #1				\n\t"
-		"mulwhi	%0, %1	; a0			\n\t"
-		"mulwu1	%0, %1	; a1			\n\t"
-		"sadd		; a0 += (a1 >> 16)	\n\t"
-		"rac	a0, a0, #1			\n\t"
-		"mvfacmi %0, a0				\n\t"
-		: "+r" (xloops)
-		: "r" (current_cpu_data.loops_per_jiffy)
-		: "a0", "a1"
-	);
-#elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R)
-	/*
-	 * u64 ull;
-	 * ull = (u64)xloops * (u64)current_cpu_data.loops_per_jiffy;
-	 * xloops = (ull >> 32);
-	 */
-	__asm__ __volatile__ (
-		"and3	r4, %0, #0xffff		\n\t"
-		"and3	r5, %1, #0xffff		\n\t"
-		"mul	r4, r5			\n\t"
-		"srl3	r6, %0, #16		\n\t"
-		"srli	r4, #16			\n\t"
-		"mul	r5, r6			\n\t"
-		"add	r4, r5			\n\t"
-		"and3	r5, %0, #0xffff		\n\t"
-		"srl3	r6, %1, #16		\n\t"
-		"mul	r5, r6			\n\t"
-		"add	r4, r5			\n\t"
-		"srl3	r5, %0, #16		\n\t"
-		"srli	r4, #16			\n\t"
-		"mul	r5, r6			\n\t"
-		"add	r4, r5			\n\t"
-		"mv	%0, r4			\n\t"
-		: "+r" (xloops)
-		: "r" (current_cpu_data.loops_per_jiffy)
-		: "r4", "r5", "r6"
-	);
-#else
-#error unknown isa configuration
-#endif
-	__delay(xloops * HZ);
-}
-
-void __udelay(unsigned long usecs)
-{
-	__const_udelay(usecs * 0x000010c7);  /* 2**32 / 1000000 (rounded up) */
-}
-
-void __ndelay(unsigned long nsecs)
-{
-	__const_udelay(nsecs * 0x00005);  /* 2**32 / 1000000000 (rounded up) */
-}
-
-EXPORT_SYMBOL(__delay);
-EXPORT_SYMBOL(__const_udelay);
-EXPORT_SYMBOL(__udelay);
-EXPORT_SYMBOL(__ndelay);
diff --git a/arch/m32r/lib/libgcc.h b/arch/m32r/lib/libgcc.h
deleted file mode 100644
index 4854690d944a..000000000000
--- a/arch/m32r/lib/libgcc.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __ASM_LIBGCC_H
-#define __ASM_LIBGCC_H
-
-#include <asm/byteorder.h>
-
-#ifdef __BIG_ENDIAN
-struct DWstruct {
-	int high, low;
-};
-#elif defined(__LITTLE_ENDIAN)
-struct DWstruct {
-	int low, high;
-};
-#else
-#error I feel sick.
-#endif
-
-typedef union {
-	struct DWstruct s;
-	long long ll;
-} DWunion;
-
-#endif /* __ASM_LIBGCC_H */
diff --git a/arch/m32r/lib/memcpy.S b/arch/m32r/lib/memcpy.S
deleted file mode 100644
index 249da3e3358d..000000000000
--- a/arch/m32r/lib/memcpy.S
+++ /dev/null
@@ -1,93 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *  linux/arch/m32r/lib/memcpy.S
- *
- *  Copyright (C) 2001  Hiroyuki Kondo, and Hirokazu Takata
- *  Copyright (C) 2004  Hirokazu Takata
- *
- *  void *memcopy(void *dst, const void *src, int n);
- *
- *        dst: r0
- *        src: r1
- *        n  : r2
- */
-
-	.text
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-	.text
-ENTRY(memcpy)
-memcopy:
-	mv	r4, r0		    ||	mv	r7, r0
-	or	r7, r1		    ||	cmpz	r2
-	jc	r14		    ||	cmpeq	r0, r1	; return if r2=0
-	jc	r14					; return if r0=r1
-
-	and3	r7, r7, #3
-	bnez	r7, byte_copy
-	srl3	r3, r2, #2
-	and3	r2, r2, #3
-	beqz	r3, byte_copy
-	addi	r4, #-4
-word_copy:
-	ld	r7, @r1+	    ||	addi	r3, #-1
-	st	r7, @+r4	    ||	cmpz	r2
-	bnez	r3, word_copy
-	addi	r4, #4		    ||	jc	r14	; return if r2=0
-#if defined(CONFIG_ISA_M32R2)
-byte_copy:
-	ldb	r7, @r1		    ||	addi	r1, #1
-	addi	r2, #-1		    ||	stb	r7, @r4+
-	bnez	r2, byte_copy
-#elif defined(CONFIG_ISA_M32R)
-byte_copy:
-	ldb	r7, @r1		    ||	addi	r1, #1
-	addi	r2, #-1		    ||	stb	r7, @r4
-	addi	r4, #1
-	bnez	r2, byte_copy
-#else
-#error unknown isa configuration
-#endif
-end_memcopy:
-	jmp	r14
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-	.text
-ENTRY(memcpy)
-memcopy:
-	mv	r4, r0
-	mv	r7, r0
-	or	r7, r1
-	beq	r0, r1, end_memcopy
-	beqz	r2, end_memcopy
-
-	and3	r7, r7, #3
-	bnez	r7, byte_copy
-	srl3	r3, r2, #2
-	and3	r2, r2, #3
-	beqz	r3, byte_copy
-	addi	r4, #-4
-word_copy:
-	ld	r7, @r1+
-	addi	r3, #-1
-	st	r7, @+r4
-	bnez	r3, word_copy
-	beqz	r2, end_memcopy
-	addi	r4, #4
-byte_copy:
-	ldb	r7, @r1
-	addi	r1, #1
-	addi	r2, #-1
-	stb	r7, @r4
-	addi	r4, #1
-	bnez	r2, byte_copy
-end_memcopy:
-	jmp	r14
-
-#endif /* not CONFIG_ISA_DUAL_ISSUE */
-
-	.end
diff --git a/arch/m32r/lib/memset.S b/arch/m32r/lib/memset.S
deleted file mode 100644
index e7f45e6c73f5..000000000000
--- a/arch/m32r/lib/memset.S
+++ /dev/null
@@ -1,179 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *  linux/arch/m32r/lib/memset.S
- *
- *  Copyright (C) 2001,2002  Hiroyuki Kondo, and Hirokazu Takata
- *  Copyright (C) 2004  Hirokazu Takata
- *
- *  void *memset(void *dst, int val, int len);
- *
- *        dst: r0
- *        val: r1
- *        len: r2
- *        ret: r0
- *
- */
-
-	.text
-	.global	memset
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-	.align 4
-memset:
-	mv      r4, r0		    ||	cmpz	r2
-	jc	r14
-	cmpui	r2, #16
-	bnc	qword_align_check
-	cmpui	r2, #4
-	bc	byte_set
-word_align_check:			/* len >= 4 */
-	and3	r3, r4, #3
-	beqz	r3, word_set
-	addi	r3, #-4
-	neg	r3, r3			/* r3 = -(r3 - 4) */
-align_word:
-	stb	r1, @r4		    ||	addi	r4, #1
-	addi	r2, #-1		    ||	addi	r3, #-1
-	bnez	r3, align_word
-	cmpui	r2, #4
-	bc	byte_set
-word_set:
-	and3	r1, r1, #0x00ff		/* r1: abababab <-- ??????ab */
-	sll3	r3, r1, #8
-	or	r1, r3		    ||	addi	r4, #-4
-	sll3	r3, r1, #16
-	or	r1, r3		    ||	addi	r2, #-4
-word_set_loop:
-	st	r1, @+r4	    ||	addi	r2, #-4
-	bgtz	r2, word_set_loop
-	bnez	r2, byte_set_wrap
-	st	r1, @+r4
-	jmp	r14
-
-qword_align_check:			/* len >= 16 */
-	and3	r3, r4, #15
-	bnez	r3, word_align_check
-qword_set:
-	and3	r1, r1, #0x00ff		/* r1: abababab <-- ??????ab */
-	sll3	r3, r1, #8
-	or	r1, r3		    ||	addi	r4, #-4
-	sll3	r3, r1, #16
-	or	r1, r3		    ||	ldi	r5, #16
-qword_set_loop:
-	ld	r3, @(4,r4)		/* cache line allocate */
-	st	r1, @+r4	    ||	addi	r2, #-16
-	st	r1, @+r4	    ||	cmpu	r2, r5
-	st	r1, @+r4
-	st	r1, @+r4
-	bnc	qword_set_loop	    ||  cmpz	r2
-	jc	r14
-set_remainder:
-	cmpui	r2, #4
-	bc	byte_set_wrap1
-	addi	r2, #-4
-	bra	word_set_loop
-
-byte_set_wrap:
-	addi	r2, #4
-	cmpz	r2
-	jc	r14
-byte_set_wrap1:
-	addi	r4, #4
-#if defined(CONFIG_ISA_M32R2)
-byte_set:
-	addi	r2, #-1		    ||	stb	r1, @r4+
-	bnez	r2, byte_set
-#elif defined(CONFIG_ISA_M32R)
-byte_set:
-	addi	r2, #-1		    ||	stb	r1, @r4
-	addi	r4, #1
-	bnez	r2, byte_set
-#else
-#error unknown isa configuration
-#endif
-end_memset:
-	jmp	r14
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-	.align 4
-memset:
-	mv      r4, r0
-	beqz	r2, end_memset
-	cmpui	r2, #16
-	bnc	qword_align_check
-	cmpui	r2, #4
-	bc	byte_set
-word_align_check:			/* len >= 4 */
-	and3	r3, r4, #3
-	beqz	r3, word_set
-	addi	r3, #-4
-	neg	r3, r3			/* r3 = -(r3 - 4) */
-align_word:
-	stb	r1, @r4
-	addi	r4, #1
-	addi	r2, #-1
-	addi	r3, #-1
-	bnez	r3, align_word
-	cmpui	r2, #4
-	bc	byte_set
-word_set:
-	and3	r1, r1, #0x00ff		/* r1: abababab <-- ??????ab */
-	sll3	r3, r1, #8
-	or	r1, r3
-	sll3	r3, r1, #16
-	or	r1, r3
-	addi	r2, #-4
-	addi	r4, #-4
-word_set_loop:
-	st	r1, @+r4
-	addi	r2, #-4
-	bgtz    r2, word_set_loop
-	bnez	r2, byte_set_wrap
-	st	r1, @+r4
-	jmp	r14
-
-qword_align_check:			/* len >= 16 */
-	and3	r3, r4, #15
-	bnez	r3, word_align_check
-qword_set:
-	and3	r1, r1, #0x00ff		/* r1: abababab <-- ??????ab */
-	sll3	r3, r1, #8
-	or	r1, r3
-	sll3	r3, r1, #16
-	or	r1, r3
-	addi	r4, #-4
-qword_set_loop:
-	ld	r3, @(4,r4)		/* cache line allocate */
-	addi	r2, #-16
-	st	r1, @+r4
-	st	r1, @+r4
-	cmpui	r2, #16
-	st	r1, @+r4
-	st	r1, @+r4
-	bnc	qword_set_loop
-	bnez	r2, set_remainder
-	jmp	r14
-set_remainder:
-	cmpui	r2, #4
-	bc	byte_set_wrap1
-	addi	r2, #-4
-	bra	word_set_loop
-
-byte_set_wrap:
-	addi	r2, #4
-	beqz	r2, end_memset
-byte_set_wrap1:
-	addi	r4, #4
-byte_set:
-	addi	r2, #-1
-	stb	r1, @r4
-	addi	r4, #1
-	bnez	r2, byte_set
-end_memset:
-	jmp	r14
-
-#endif /* not CONFIG_ISA_DUAL_ISSUE */
-
-	.end
diff --git a/arch/m32r/lib/strlen.S b/arch/m32r/lib/strlen.S
deleted file mode 100644
index 41c77e387593..000000000000
--- a/arch/m32r/lib/strlen.S
+++ /dev/null
@@ -1,118 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *  linux/arch/m32r/strlen.S --  strlen code.
- *
- *  Copyright (C) 2001  Hirokazu Takata
- *
- *  size_t strlen(const char *s);
- *
- */
-
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-	.text
-ENTRY(strlen)
-	mv	r6, r0		    ||	ldi	r2, #0
-	and3	r0, r0, #3
-	bnez	r0, strlen_byte
-;
-strlen_word:
-	ld	r0, @r6+
-;
-	seth	r5, #high(0x01010101)
-	or3	r5, r5, #low(0x01010101)
-	sll3	r7, r5, #7
-strlen_word_loop:
-	ld	r1, @r6+	    ||	not	r4, r0
-	sub	r0, r5		    ||	and	r4, r7
-	and	r4, r0
-	bnez	r4, strlen_last_bytes
-	ld	r0, @r6+	    ||	not	r4, r1
-	sub	r1, r5		    ||	and	r4, r7
-	and	r4, r1		    ||	addi	r2, #4
-	bnez	r4, strlen_last_bytes
-	addi	r2, #4		    ||	bra.s	strlen_word_loop
-
-	; NOTE: If a null char. exists, return 0.
-	; if ((x - 0x01010101) & ~x & 0x80808080)
-	;     return 0;
-;
-strlen_byte:
-	ldb	r1, @r6		    ||	addi	r6, #1
-	beqz	r1, strlen_exit
-	addi	r2, #1		    ||	bra.s	strlen_byte
-;
-strlen_last_bytes:
-	ldi	r0, #4		    ||	addi	r6, #-8
-;
-strlen_byte_loop:
-	ldb	r1, @r6		    ||	addi	r6, #1
-	addi	r0, #-1		    ||  cmpz	r1
-	bc.s	strlen_exit	    ||  cmpz	r0
-	addi	r2, #1		    ||	bnc.s	strlen_byte_loop
-;
-strlen_exit:
-	mv	r0, r2		    ||	jmp	r14
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-	.text
-ENTRY(strlen)
-	mv	r6, r0
-	ldi	r2, #0
-	and3	r0, r0, #3
-	bnez	r0, strlen_byte
-;
-strlen_word:
-	ld	r0, @r6+
-;
-	seth	r5, #high(0x01010101)
-	or3	r5, r5, #low(0x01010101)
-	sll3	r7, r5, #7
-strlen_word_loop:
-	ld	r1, @r6+
-	not	r4, r0		; NOTE: If a null char. exists, return 0.
-	sub	r0, r5		; if ((x - 0x01010101) & ~x & 0x80808080)
-	and	r4, r7		;     return 0;
-	and	r4, r0
-	bnez	r4, strlen_last_bytes
-	addi	r2, #4
-;
-	ld	r0, @r6+
-	not	r4, r1		; NOTE: If a null char. exists, return 0.
-	sub	r1, r5		; if ((x - 0x01010101) & ~x & 0x80808080)
-	and	r4, r7		;     return 0;
-	and	r4, r1
-	bnez	r4, strlen_last_bytes
-	addi	r2, #4
-	bra	strlen_word_loop
-;
-strlen_byte:
-	ldb	r1, @r6
-	addi	r6, #1
-	beqz	r1, strlen_exit
-	addi	r2, #1
-	bra	strlen_byte
-;
-strlen_last_bytes:
-	ldi	r0, #4
-	addi	r6, #-8
-;
-strlen_byte_loop:
-	ldb	r1, @r6
-	addi	r6, #1
-	addi	r0, #-1
-	beqz	r1, strlen_exit
-	addi	r2, #1
-	bnez	r0, strlen_byte_loop
-;
-strlen_exit:
-	mv	r0, r2
-	jmp	r14
-
-#endif /* not CONFIG_ISA_DUAL_ISSUE */
-
-	.end
diff --git a/arch/m32r/lib/ucmpdi2.c b/arch/m32r/lib/ucmpdi2.c
deleted file mode 100644
index e20fa3484fd8..000000000000
--- a/arch/m32r/lib/ucmpdi2.c
+++ /dev/null
@@ -1,18 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include "libgcc.h"
-
-int __ucmpdi2(unsigned long long a, unsigned long long b)
-{
-	const DWunion au = {.ll = a};
-	const DWunion bu = {.ll = b};
-
-	if ((unsigned int)au.s.high < (unsigned int)bu.s.high)
-		return 0;
-	else if ((unsigned int)au.s.high > (unsigned int)bu.s.high)
-		return 2;
-	if ((unsigned int)au.s.low < (unsigned int)bu.s.low)
-		return 0;
-	else if ((unsigned int)au.s.low > (unsigned int)bu.s.low)
-		return 2;
-	return 1;
-}
diff --git a/arch/m32r/lib/usercopy.c b/arch/m32r/lib/usercopy.c
deleted file mode 100644
index 0892a4341b3a..000000000000
--- a/arch/m32r/lib/usercopy.c
+++ /dev/null
@@ -1,362 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * User address space access functions.
- * The non inlined parts of asm-m32r/uaccess.h are here.
- *
- * Copyright 1997 Andi Kleen <ak@muc.de>
- * Copyright 1997 Linus Torvalds
- * Copyright 2001, 2002, 2004 Hirokazu Takata
- */
-#include <linux/prefetch.h>
-#include <linux/string.h>
-#include <linux/thread_info.h>
-#include <linux/uaccess.h>
-
-/*
- * Copy a null terminated string from userspace.
- */
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-#define __do_strncpy_from_user(dst,src,count,res)			\
-do {									\
-	int __d0, __d1, __d2;						\
-	__asm__ __volatile__(						\
-		"	beqz	%1, 2f\n"				\
-		"	.fillinsn\n"					\
-		"0:	ldb	r14, @%3    ||	addi	%3, #1\n"	\
-		"	stb	r14, @%4    ||	addi	%4, #1\n"	\
-		"	beqz	r14, 1f\n"				\
-		"	addi	%1, #-1\n"				\
-		"	bnez	%1, 0b\n"				\
-		"	.fillinsn\n"					\
-		"1:	sub	%0, %1\n"				\
-		"	.fillinsn\n"					\
-		"2:\n"							\
-		".section .fixup,\"ax\"\n"				\
-		"	.balign 4\n"					\
-		"3:	seth	r14, #high(2b)\n"			\
-		"	or3	r14, r14, #low(2b)\n"			\
-		"	jmp	r14	    ||	ldi	%0, #%5\n"	\
-		".previous\n"						\
-		".section __ex_table,\"a\"\n"				\
-		"	.balign 4\n"					\
-		"	.long 0b,3b\n"					\
-		".previous"						\
-		: "=&r"(res), "=&r"(count), "=&r" (__d0), "=&r" (__d1),	\
-		  "=&r" (__d2)						\
-		: "i"(-EFAULT), "0"(count), "1"(count), "3"(src), 	\
-		  "4"(dst)						\
-		: "r14", "cbit", "memory");				\
-} while (0)
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-#define __do_strncpy_from_user(dst,src,count,res)			\
-do {									\
-	int __d0, __d1, __d2;						\
-	__asm__ __volatile__(						\
-		"	beqz	%1, 2f\n"				\
-		"	.fillinsn\n"					\
-		"0:	ldb	r14, @%3\n"				\
-		"	stb	r14, @%4\n"				\
-		"	addi	%3, #1\n"				\
-		"	addi	%4, #1\n"				\
-		"	beqz	r14, 1f\n"				\
-		"	addi	%1, #-1\n"				\
-		"	bnez	%1, 0b\n"				\
-		"	.fillinsn\n"					\
-		"1:	sub	%0, %1\n"				\
-		"	.fillinsn\n"					\
-		"2:\n"							\
-		".section .fixup,\"ax\"\n"				\
-		"	.balign 4\n"					\
-		"3:	ldi	%0, #%5\n"				\
-		"	seth	r14, #high(2b)\n"			\
-		"	or3	r14, r14, #low(2b)\n"			\
-		"	jmp	r14\n"					\
-		".previous\n"						\
-		".section __ex_table,\"a\"\n"				\
-		"	.balign 4\n"					\
-		"	.long 0b,3b\n"					\
-		".previous"						\
-		: "=&r"(res), "=&r"(count), "=&r" (__d0), "=&r" (__d1),	\
-		  "=&r" (__d2)						\
-		: "i"(-EFAULT), "0"(count), "1"(count), "3"(src),	\
-		  "4"(dst)						\
-		: "r14", "cbit", "memory");				\
-} while (0)
-
-#endif /* CONFIG_ISA_DUAL_ISSUE */
-
-long
-strncpy_from_user(char *dst, const char __user *src, long count)
-{
-	long res = -EFAULT;
-	if (access_ok(VERIFY_READ, src, 1))
-		__do_strncpy_from_user(dst, src, count, res);
-	return res;
-}
-
-
-/*
- * Zero Userspace
- */
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-#define __do_clear_user(addr,size)					\
-do {									\
-	int __dst, __c;							\
-  	__asm__ __volatile__(						\
-		"	beqz	%1, 9f\n"				\
-		"	and3	r14, %0, #3\n"				\
-		"	bnez	r14, 2f\n"				\
-		"	and3	r14, %1, #3\n"				\
-		"	bnez	r14, 2f\n"				\
-		"	and3	%1, %1, #3\n"				\
-		"	beqz	%2, 2f\n"				\
-		"	addi	%0, #-4\n"				\
-		"	.fillinsn\n"					\
-		"0:	; word clear \n"				\
-		"	st	%6, @+%0    ||	addi	%2, #-1\n"	\
-		"	bnez	%2, 0b\n"				\
-		"	beqz	%1, 9f\n"				\
-		"	.fillinsn\n"					\
-		"2:	; byte clear \n"				\
-		"	stb	%6, @%0	    ||	addi	%1, #-1\n"	\
-		"	addi	%0, #1\n"				\
-		"	bnez	%1, 2b\n"				\
-		"	.fillinsn\n"					\
-		"9:\n"							\
-		".section .fixup,\"ax\"\n"				\
-		"	.balign 4\n"					\
-		"4:	slli	%2, #2\n"				\
-		"	seth	r14, #high(9b)\n"			\
-		"	or3	r14, r14, #low(9b)\n"			\
-		"	jmp	r14	    ||	add	%1, %2\n"	\
-		".previous\n"						\
-		".section __ex_table,\"a\"\n"				\
-		"	.balign 4\n"					\
-		"	.long 0b,4b\n"					\
-		"	.long 2b,9b\n"					\
-		".previous\n"						\
-		: "=&r"(__dst), "=&r"(size), "=&r"(__c)			\
-		: "0"(addr), "1"(size), "2"(size / 4), "r"(0)		\
-		: "r14", "cbit", "memory");				\
-} while (0)
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-#define __do_clear_user(addr,size)					\
-do {									\
-	int __dst, __c;							\
-  	__asm__ __volatile__(						\
-		"	beqz	%1, 9f\n"				\
-		"	and3	r14, %0, #3\n"				\
-		"	bnez	r14, 2f\n"				\
-		"	and3	r14, %1, #3\n"				\
-		"	bnez	r14, 2f\n"				\
-		"	and3	%1, %1, #3\n"				\
-		"	beqz	%2, 2f\n"				\
-		"	addi	%0, #-4\n"				\
-		"	.fillinsn\n"					\
-		"0:	st	%6, @+%0	; word clear \n"	\
-		"	addi	%2, #-1\n"				\
-		"	bnez	%2, 0b\n"				\
-		"	beqz	%1, 9f\n"				\
-		"	.fillinsn\n"					\
-		"2:	stb	%6, @%0		; byte clear \n"	\
-		"	addi	%1, #-1\n"				\
-		"	addi	%0, #1\n"				\
-		"	bnez	%1, 2b\n"				\
-		"	.fillinsn\n"					\
-		"9:\n"							\
-		".section .fixup,\"ax\"\n"				\
-		"	.balign 4\n"					\
-		"4:	slli	%2, #2\n"				\
-		"	add	%1, %2\n"				\
-		"	seth	r14, #high(9b)\n"			\
-		"	or3	r14, r14, #low(9b)\n"			\
-		"	jmp	r14\n"					\
-		".previous\n"						\
-		".section __ex_table,\"a\"\n"				\
-		"	.balign 4\n"					\
-		"	.long 0b,4b\n"					\
-		"	.long 2b,9b\n"					\
-		".previous\n"						\
-		: "=&r"(__dst), "=&r"(size), "=&r"(__c)			\
-		: "0"(addr), "1"(size), "2"(size / 4), "r"(0)		\
-		: "r14", "cbit", "memory");				\
-} while (0)
-
-#endif /* not CONFIG_ISA_DUAL_ISSUE */
-
-unsigned long
-clear_user(void __user *to, unsigned long n)
-{
-	if (access_ok(VERIFY_WRITE, to, n))
-		__do_clear_user(to, n);
-	return n;
-}
-
-unsigned long
-__clear_user(void __user *to, unsigned long n)
-{
-	__do_clear_user(to, n);
-	return n;
-}
-
-/*
- * Return the size of a string (including the ending 0)
- *
- * Return 0 on exception, a value greater than N if too long
- */
-
-#ifdef CONFIG_ISA_DUAL_ISSUE
-
-long strnlen_user(const char __user *s, long n)
-{
-	unsigned long mask = -__addr_ok(s);
-	unsigned long res;
-
-	__asm__ __volatile__(
-		"	and	%0, %5	    ||	mv	r1, %1\n"
-		"	beqz	%0, strnlen_exit\n"
-		"	and3	r0, %1, #3\n"
-		"	bnez	r0, strnlen_byte_loop\n"
-		"	cmpui	%0, #4\n"
-		"	bc	strnlen_byte_loop\n"
-		"strnlen_word_loop:\n"
-		"0:	ld	r0, @%1+\n"
-		"	pcmpbz	r0\n"
-		"	bc	strnlen_last_bytes_fixup\n"
-		"	addi	%0, #-4\n"
-		"	beqz	%0, strnlen_exit\n"
-		"	bgtz	%0, strnlen_word_loop\n"
-		"strnlen_last_bytes:\n"
-		"	mv	%0, %4\n"
-		"strnlen_last_bytes_fixup:\n"
-		"	addi	%1, #-4\n"
-		"strnlen_byte_loop:\n"
-		"1:	ldb	r0, @%1	    ||	addi	%0, #-1\n"
-		"	beqz	r0, strnlen_exit\n"
-		"	addi	%1, #1\n"
-		"	bnez	%0, strnlen_byte_loop\n"
-		"strnlen_exit:\n"
-		"	sub	%1, r1\n"
-		"	add3	%0, %1, #1\n"
-		"	.fillinsn\n"
-		"9:\n"
-		".section .fixup,\"ax\"\n"
-		"	.balign 4\n"
-		"4:	addi	%1, #-4\n"
-		"	.fillinsn\n"
-		"5:	seth	r1, #high(9b)\n"
-		"	or3	r1, r1, #low(9b)\n"
-		"	jmp	r1	    ||	ldi	%0, #0\n"
-		".previous\n"
-		".section __ex_table,\"a\"\n"
-		"	.balign 4\n"
-		"	.long 0b,4b\n"
-		"	.long 1b,5b\n"
-		".previous"
-		: "=&r" (res), "=r" (s)
-		: "0" (n), "1" (s), "r" (n & 3), "r" (mask), "r"(0x01010101)
-		: "r0", "r1", "cbit");
-
-	/* NOTE: strnlen_user() algorithm:
-	 * {
-	 *   char *p;
-	 *   for (p = s; n-- && *p != '\0'; ++p)
-	 *     ;
-	 *   return p - s + 1;
-	 * }
-	 */
-
-	/* NOTE: If a null char. exists, return 0.
-	 * if ((x - 0x01010101) & ~x & 0x80808080)\n"
-	 *   return 0;\n"
-	 */
-
-	return res & mask;
-}
-
-#else /* not CONFIG_ISA_DUAL_ISSUE */
-
-long strnlen_user(const char __user *s, long n)
-{
-	unsigned long mask = -__addr_ok(s);
-	unsigned long res;
-
-	__asm__ __volatile__(
-		"	and	%0, %5\n"
-		"	mv	r1, %1\n"
-		"	beqz	%0, strnlen_exit\n"
-		"	and3	r0, %1, #3\n"
-		"	bnez	r0, strnlen_byte_loop\n"
-		"	cmpui	%0, #4\n"
-		"	bc	strnlen_byte_loop\n"
-		"	sll3	r3, %6, #7\n"
-		"strnlen_word_loop:\n"
-		"0:	ld	r0, @%1+\n"
-		"	not	r2, r0\n"
-		"	sub	r0, %6\n"
-		"	and	r2, r3\n"
-		"	and	r2, r0\n"
-		"	bnez	r2, strnlen_last_bytes_fixup\n"
-		"	addi	%0, #-4\n"
-		"	beqz	%0, strnlen_exit\n"
-		"	bgtz	%0, strnlen_word_loop\n"
-		"strnlen_last_bytes:\n"
-		"	mv	%0, %4\n"
-		"strnlen_last_bytes_fixup:\n"
-		"	addi	%1, #-4\n"
-		"strnlen_byte_loop:\n"
-		"1:	ldb	r0, @%1\n"
-		"	addi	%0, #-1\n"
-		"	beqz	r0, strnlen_exit\n"
-		"	addi	%1, #1\n"
-		"	bnez	%0, strnlen_byte_loop\n"
-		"strnlen_exit:\n"
-		"	sub	%1, r1\n"
-		"	add3	%0, %1, #1\n"
-		"	.fillinsn\n"
-		"9:\n"
-		".section .fixup,\"ax\"\n"
-		"	.balign 4\n"
-		"4:	addi	%1, #-4\n"
-		"	.fillinsn\n"
-		"5:	ldi	%0, #0\n"
-		"	seth	r1, #high(9b)\n"
-		"	or3	r1, r1, #low(9b)\n"
-		"	jmp	r1\n"
-		".previous\n"
-		".section __ex_table,\"a\"\n"
-		"	.balign 4\n"
-		"	.long 0b,4b\n"
-		"	.long 1b,5b\n"
-		".previous"
-		: "=&r" (res), "=r" (s)
-		: "0" (n), "1" (s), "r" (n & 3), "r" (mask), "r"(0x01010101)
-		: "r0", "r1", "r2", "r3", "cbit");
-
-	/* NOTE: strnlen_user() algorithm:
-	 * {
-	 *   char *p;
-	 *   for (p = s; n-- && *p != '\0'; ++p)
-	 *     ;
-	 *   return p - s + 1;
-	 * }
-	 */
-
-	/* NOTE: If a null char. exists, return 0.
-	 * if ((x - 0x01010101) & ~x & 0x80808080)\n"
-	 *   return 0;\n"
-	 */
-
-	return res & mask;
-}
-
-#endif /* CONFIG_ISA_DUAL_ISSUE */
-