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>

1 files changed, 0 insertions, 362 deletions

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 */
-