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Diffstat (limited to 'include/asm-x86/uaccess_64.h')
-rw-r--r--include/asm-x86/uaccess_64.h202
1 files changed, 0 insertions, 202 deletions
diff --git a/include/asm-x86/uaccess_64.h b/include/asm-x86/uaccess_64.h
deleted file mode 100644
index c96c1f5d07a2..000000000000
--- a/include/asm-x86/uaccess_64.h
+++ /dev/null
@@ -1,202 +0,0 @@
-#ifndef ASM_X86__UACCESS_64_H
-#define ASM_X86__UACCESS_64_H
-
-/*
- * User space memory access functions
- */
-#include <linux/compiler.h>
-#include <linux/errno.h>
-#include <linux/prefetch.h>
-#include <linux/lockdep.h>
-#include <asm/page.h>
-
-/*
- * Copy To/From Userspace
- */
-
-/* Handles exceptions in both to and from, but doesn't do access_ok */
-__must_check unsigned long
-copy_user_generic(void *to, const void *from, unsigned len);
-
-__must_check unsigned long
-copy_to_user(void __user *to, const void *from, unsigned len);
-__must_check unsigned long
-copy_from_user(void *to, const void __user *from, unsigned len);
-__must_check unsigned long
-copy_in_user(void __user *to, const void __user *from, unsigned len);
-
-static __always_inline __must_check
-int __copy_from_user(void *dst, const void __user *src, unsigned size)
-{
- int ret = 0;
- if (!__builtin_constant_p(size))
- return copy_user_generic(dst, (__force void *)src, size);
- switch (size) {
- case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src,
- ret, "b", "b", "=q", 1);
- return ret;
- case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src,
- ret, "w", "w", "=r", 2);
- return ret;
- case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src,
- ret, "l", "k", "=r", 4);
- return ret;
- case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src,
- ret, "q", "", "=r", 8);
- return ret;
- case 10:
- __get_user_asm(*(u64 *)dst, (u64 __user *)src,
- ret, "q", "", "=r", 16);
- if (unlikely(ret))
- return ret;
- __get_user_asm(*(u16 *)(8 + (char *)dst),
- (u16 __user *)(8 + (char __user *)src),
- ret, "w", "w", "=r", 2);
- return ret;
- case 16:
- __get_user_asm(*(u64 *)dst, (u64 __user *)src,
- ret, "q", "", "=r", 16);
- if (unlikely(ret))
- return ret;
- __get_user_asm(*(u64 *)(8 + (char *)dst),
- (u64 __user *)(8 + (char __user *)src),
- ret, "q", "", "=r", 8);
- return ret;
- default:
- return copy_user_generic(dst, (__force void *)src, size);
- }
-}
-
-static __always_inline __must_check
-int __copy_to_user(void __user *dst, const void *src, unsigned size)
-{
- int ret = 0;
- if (!__builtin_constant_p(size))
- return copy_user_generic((__force void *)dst, src, size);
- switch (size) {
- case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst,
- ret, "b", "b", "iq", 1);
- return ret;
- case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst,
- ret, "w", "w", "ir", 2);
- return ret;
- case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst,
- ret, "l", "k", "ir", 4);
- return ret;
- case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst,
- ret, "q", "", "ir", 8);
- return ret;
- case 10:
- __put_user_asm(*(u64 *)src, (u64 __user *)dst,
- ret, "q", "", "ir", 10);
- if (unlikely(ret))
- return ret;
- asm("":::"memory");
- __put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst,
- ret, "w", "w", "ir", 2);
- return ret;
- case 16:
- __put_user_asm(*(u64 *)src, (u64 __user *)dst,
- ret, "q", "", "ir", 16);
- if (unlikely(ret))
- return ret;
- asm("":::"memory");
- __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst,
- ret, "q", "", "ir", 8);
- return ret;
- default:
- return copy_user_generic((__force void *)dst, src, size);
- }
-}
-
-static __always_inline __must_check
-int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
-{
- int ret = 0;
- if (!__builtin_constant_p(size))
- return copy_user_generic((__force void *)dst,
- (__force void *)src, size);
- switch (size) {
- case 1: {
- u8 tmp;
- __get_user_asm(tmp, (u8 __user *)src,
- ret, "b", "b", "=q", 1);
- if (likely(!ret))
- __put_user_asm(tmp, (u8 __user *)dst,
- ret, "b", "b", "iq", 1);
- return ret;
- }
- case 2: {
- u16 tmp;
- __get_user_asm(tmp, (u16 __user *)src,
- ret, "w", "w", "=r", 2);
- if (likely(!ret))
- __put_user_asm(tmp, (u16 __user *)dst,
- ret, "w", "w", "ir", 2);
- return ret;
- }
-
- case 4: {
- u32 tmp;
- __get_user_asm(tmp, (u32 __user *)src,
- ret, "l", "k", "=r", 4);
- if (likely(!ret))
- __put_user_asm(tmp, (u32 __user *)dst,
- ret, "l", "k", "ir", 4);
- return ret;
- }
- case 8: {
- u64 tmp;
- __get_user_asm(tmp, (u64 __user *)src,
- ret, "q", "", "=r", 8);
- if (likely(!ret))
- __put_user_asm(tmp, (u64 __user *)dst,
- ret, "q", "", "ir", 8);
- return ret;
- }
- default:
- return copy_user_generic((__force void *)dst,
- (__force void *)src, size);
- }
-}
-
-__must_check long
-strncpy_from_user(char *dst, const char __user *src, long count);
-__must_check long
-__strncpy_from_user(char *dst, const char __user *src, long count);
-__must_check long strnlen_user(const char __user *str, long n);
-__must_check long __strnlen_user(const char __user *str, long n);
-__must_check long strlen_user(const char __user *str);
-__must_check unsigned long clear_user(void __user *mem, unsigned long len);
-__must_check unsigned long __clear_user(void __user *mem, unsigned long len);
-
-__must_check long __copy_from_user_inatomic(void *dst, const void __user *src,
- unsigned size);
-
-static __must_check __always_inline int
-__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
-{
- return copy_user_generic((__force void *)dst, src, size);
-}
-
-extern long __copy_user_nocache(void *dst, const void __user *src,
- unsigned size, int zerorest);
-
-static inline int __copy_from_user_nocache(void *dst, const void __user *src,
- unsigned size)
-{
- might_sleep();
- return __copy_user_nocache(dst, src, size, 1);
-}
-
-static inline int __copy_from_user_inatomic_nocache(void *dst,
- const void __user *src,
- unsigned size)
-{
- return __copy_user_nocache(dst, src, size, 0);
-}
-
-unsigned long
-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest);
-
-#endif /* ASM_X86__UACCESS_64_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 12:38:03 +0000