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Diffstat (limited to 'arch/powerpc/include/asm/uaccess.h')
-rw-r--r--arch/powerpc/include/asm/uaccess.h96
1 files changed, 10 insertions, 86 deletions
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 0e6add3187bc..5c0d8a8cdae5 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -1,18 +1,11 @@
#ifndef _ARCH_POWERPC_UACCESS_H
#define _ARCH_POWERPC_UACCESS_H
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
-#include <linux/sched.h>
-#include <linux/errno.h>
#include <asm/asm-compat.h>
#include <asm/ppc_asm.h>
#include <asm/processor.h>
#include <asm/page.h>
-
-#define VERIFY_READ 0
-#define VERIFY_WRITE 1
+#include <asm/extable.h>
/*
* The fs value determines whether argument validity checking should be
@@ -64,31 +57,6 @@
__access_ok((__force unsigned long)(addr), (size), get_fs()))
/*
- * The exception table consists of pairs of relative addresses: the first is
- * the address of an instruction that is allowed to fault, and the second is
- * the address at which the program should continue. No registers are
- * modified, so it is entirely up to the continuation code to figure out what
- * to do.
- *
- * All the routines below use bits of fixup code that are out of line with the
- * main instruction path. This means when everything is well, we don't even
- * have to jump over them. Further, they do not intrude on our cache or tlb
- * entries.
- */
-
-#define ARCH_HAS_RELATIVE_EXTABLE
-
-struct exception_table_entry {
- int insn;
- int fixup;
-};
-
-static inline unsigned long extable_fixup(const struct exception_table_entry *x)
-{
- return (unsigned long)&x->fixup + x->fixup;
-}
-
-/*
* These are the main single-value transfer routines. They automatically
* use the right size if we just have the right pointer type.
*
@@ -301,42 +269,19 @@ extern unsigned long __copy_tofrom_user(void __user *to,
#ifndef __powerpc64__
-static inline unsigned long copy_from_user(void *to,
- const void __user *from, unsigned long n)
-{
- if (likely(access_ok(VERIFY_READ, from, n))) {
- check_object_size(to, n, false);
- return __copy_tofrom_user((__force void __user *)to, from, n);
- }
- memset(to, 0, n);
- return n;
-}
-
-static inline unsigned long copy_to_user(void __user *to,
- const void *from, unsigned long n)
-{
- if (access_ok(VERIFY_WRITE, to, n)) {
- check_object_size(from, n, true);
- return __copy_tofrom_user(to, (__force void __user *)from, n);
- }
- return n;
-}
+#define INLINE_COPY_FROM_USER
+#define INLINE_COPY_TO_USER
#else /* __powerpc64__ */
-#define __copy_in_user(to, from, size) \
- __copy_tofrom_user((to), (from), (size))
-
-extern unsigned long copy_from_user(void *to, const void __user *from,
- unsigned long n);
-extern unsigned long copy_to_user(void __user *to, const void *from,
- unsigned long n);
-extern unsigned long copy_in_user(void __user *to, const void __user *from,
- unsigned long n);
-
+static inline unsigned long
+raw_copy_in_user(void __user *to, const void __user *from, unsigned long n)
+{
+ return __copy_tofrom_user(to, from, n);
+}
#endif /* __powerpc64__ */
-static inline unsigned long __copy_from_user_inatomic(void *to,
+static inline unsigned long raw_copy_from_user(void *to,
const void __user *from, unsigned long n)
{
if (__builtin_constant_p(n) && (n <= 8)) {
@@ -360,12 +305,10 @@ static inline unsigned long __copy_from_user_inatomic(void *to,
return 0;
}
- check_object_size(to, n, false);
-
return __copy_tofrom_user((__force void __user *)to, from, n);
}
-static inline unsigned long __copy_to_user_inatomic(void __user *to,
+static inline unsigned long raw_copy_to_user(void __user *to,
const void *from, unsigned long n)
{
if (__builtin_constant_p(n) && (n <= 8)) {
@@ -389,25 +332,9 @@ static inline unsigned long __copy_to_user_inatomic(void __user *to,
return 0;
}
- check_object_size(from, n, true);
-
return __copy_tofrom_user(to, (__force const void __user *)from, n);
}
-static inline unsigned long __copy_from_user(void *to,
- const void __user *from, unsigned long size)
-{
- might_fault();
- return __copy_from_user_inatomic(to, from, size);
-}
-
-static inline unsigned long __copy_to_user(void __user *to,
- const void *from, unsigned long size)
-{
- might_fault();
- return __copy_to_user_inatomic(to, from, size);
-}
-
extern unsigned long __clear_user(void __user *addr, unsigned long size);
static inline unsigned long clear_user(void __user *addr, unsigned long size)
@@ -422,7 +349,4 @@ extern long strncpy_from_user(char *dst, const char __user *src, long count);
extern __must_check long strlen_user(const char __user *str);
extern __must_check long strnlen_user(const char __user *str, long n);
-#endif /* __ASSEMBLY__ */
-#endif /* __KERNEL__ */
-
#endif /* _ARCH_POWERPC_UACCESS_H */