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-rw-r--r--arch/sparc/include/asm/uaccess_32.h220
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diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
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--- /dev/null
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -0,0 +1,220 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * uaccess.h: User space memore access functions.
+ *
+ * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+#ifndef _ASM_UACCESS_H
+#define _ASM_UACCESS_H
+
+#include <linux/compiler.h>
+#include <linux/string.h>
+
+#include <asm/processor.h>
+#include <asm-generic/access_ok.h>
+
+/* Uh, these should become the main single-value transfer routines..
+ * They automatically use the right size if we just have the right
+ * pointer type..
+ *
+ * This gets kind of ugly. We want to return _two_ values in "get_user()"
+ * and yet we don't want to do any pointers, because that is too much
+ * of a performance impact. Thus we have a few rather ugly macros here,
+ * and hide all the ugliness from the user.
+ */
+#define put_user(x, ptr) ({ \
+ void __user *__pu_addr = (ptr); \
+ __chk_user_ptr(ptr); \
+ __put_user_check((__typeof__(*(ptr)))(x), __pu_addr, sizeof(*(ptr))); \
+})
+
+#define get_user(x, ptr) ({ \
+ const void __user *__gu_addr = (ptr); \
+ __chk_user_ptr(ptr); \
+ __get_user_check((x), __gu_addr, sizeof(*(ptr)), __typeof__(*(ptr))); \
+})
+
+/*
+ * The "__xxx" versions do not do address space checking, useful when
+ * doing multiple accesses to the same area (the user has to do the
+ * checks by hand with "access_ok()")
+ */
+#define __put_user(x, ptr) \
+ __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
+#define __get_user(x, ptr) \
+ __get_user_nocheck((x), (ptr), sizeof(*(ptr)), __typeof__(*(ptr)))
+
+struct __large_struct { unsigned long buf[100]; };
+#define __m(x) ((struct __large_struct __user *)(x))
+
+#define __put_user_check(x, addr, size) ({ \
+ register int __pu_ret; \
+ if (__access_ok(addr, size)) { \
+ switch (size) { \
+ case 1: \
+ __put_user_asm(x, b, addr, __pu_ret); \
+ break; \
+ case 2: \
+ __put_user_asm(x, h, addr, __pu_ret); \
+ break; \
+ case 4: \
+ __put_user_asm(x, , addr, __pu_ret); \
+ break; \
+ case 8: \
+ __put_user_asm(x, d, addr, __pu_ret); \
+ break; \
+ default: \
+ __pu_ret = __put_user_bad(); \
+ break; \
+ } \
+ } else { \
+ __pu_ret = -EFAULT; \
+ } \
+ __pu_ret; \
+})
+
+#define __put_user_nocheck(x, addr, size) ({ \
+ register int __pu_ret; \
+ switch (size) { \
+ case 1: __put_user_asm(x, b, addr, __pu_ret); break; \
+ case 2: __put_user_asm(x, h, addr, __pu_ret); break; \
+ case 4: __put_user_asm(x, , addr, __pu_ret); break; \
+ case 8: __put_user_asm(x, d, addr, __pu_ret); break; \
+ default: __pu_ret = __put_user_bad(); break; \
+ } \
+ __pu_ret; \
+})
+
+#define __put_user_asm(x, size, addr, ret) \
+__asm__ __volatile__( \
+ "/* Put user asm, inline. */\n" \
+ "1:\t" "st"#size " %1, %2\n\t" \
+ "clr %0\n" \
+ "2:\n\n\t" \
+ ".section .fixup,#alloc,#execinstr\n\t" \
+ ".align 4\n" \
+ "3:\n\t" \
+ "b 2b\n\t" \
+ " mov %3, %0\n\t" \
+ ".previous\n\n\t" \
+ ".section __ex_table,#alloc\n\t" \
+ ".align 4\n\t" \
+ ".word 1b, 3b\n\t" \
+ ".previous\n\n\t" \
+ : "=&r" (ret) : "r" (x), "m" (*__m(addr)), \
+ "i" (-EFAULT))
+
+int __put_user_bad(void);
+
+#define __get_user_check(x, addr, size, type) ({ \
+ register int __gu_ret; \
+ register unsigned long __gu_val; \
+ if (__access_ok(addr, size)) { \
+ switch (size) { \
+ case 1: \
+ __get_user_asm(__gu_val, ub, addr, __gu_ret); \
+ break; \
+ case 2: \
+ __get_user_asm(__gu_val, uh, addr, __gu_ret); \
+ break; \
+ case 4: \
+ __get_user_asm(__gu_val, , addr, __gu_ret); \
+ break; \
+ case 8: \
+ __get_user_asm(__gu_val, d, addr, __gu_ret); \
+ break; \
+ default: \
+ __gu_val = 0; \
+ __gu_ret = __get_user_bad(); \
+ break; \
+ } \
+ } else { \
+ __gu_val = 0; \
+ __gu_ret = -EFAULT; \
+ } \
+ x = (__force type) __gu_val; \
+ __gu_ret; \
+})
+
+#define __get_user_nocheck(x, addr, size, type) ({ \
+ register int __gu_ret; \
+ register unsigned long __gu_val; \
+ switch (size) { \
+ case 1: __get_user_asm(__gu_val, ub, addr, __gu_ret); break; \
+ case 2: __get_user_asm(__gu_val, uh, addr, __gu_ret); break; \
+ case 4: __get_user_asm(__gu_val, , addr, __gu_ret); break; \
+ case 8: __get_user_asm(__gu_val, d, addr, __gu_ret); break; \
+ default: \
+ __gu_val = 0; \
+ __gu_ret = __get_user_bad(); \
+ break; \
+ } \
+ x = (__force type) __gu_val; \
+ __gu_ret; \
+})
+
+#define __get_user_asm(x, size, addr, ret) \
+__asm__ __volatile__( \
+ "/* Get user asm, inline. */\n" \
+ "1:\t" "ld"#size " %2, %1\n\t" \
+ "clr %0\n" \
+ "2:\n\n\t" \
+ ".section .fixup,#alloc,#execinstr\n\t" \
+ ".align 4\n" \
+ "3:\n\t" \
+ "clr %1\n\t" \
+ "b 2b\n\t" \
+ " mov %3, %0\n\n\t" \
+ ".previous\n\t" \
+ ".section __ex_table,#alloc\n\t" \
+ ".align 4\n\t" \
+ ".word 1b, 3b\n\n\t" \
+ ".previous\n\t" \
+ : "=&r" (ret), "=&r" (x) : "m" (*__m(addr)), \
+ "i" (-EFAULT))
+
+int __get_user_bad(void);
+
+unsigned long __copy_user(void __user *to, const void __user *from, unsigned long size);
+
+static inline unsigned long raw_copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+ return __copy_user(to, (__force void __user *) from, n);
+}
+
+static inline unsigned long raw_copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+ return __copy_user((__force void __user *) to, from, n);
+}
+
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
+
+static inline unsigned long __clear_user(void __user *addr, unsigned long size)
+{
+ unsigned long ret;
+
+ __asm__ __volatile__ (
+ "mov %2, %%o1\n"
+ "call __bzero\n\t"
+ " mov %1, %%o0\n\t"
+ "mov %%o0, %0\n"
+ : "=r" (ret) : "r" (addr), "r" (size) :
+ "o0", "o1", "o2", "o3", "o4", "o5", "o7",
+ "g1", "g2", "g3", "g4", "g5", "g7", "cc");
+
+ return ret;
+}
+
+static inline unsigned long clear_user(void __user *addr, unsigned long n)
+{
+ if (n && __access_ok(addr, n))
+ return __clear_user(addr, n);
+ else
+ return n;
+}
+
+__must_check long strnlen_user(const char __user *str, long n);
+
+#endif /* _ASM_UACCESS_H */