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OpenCloudOS-Kernel
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MIPS: Make uaccess.h slightly more sparse friendly. 

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2009-04-27 16:46:21 +02:00
parent d0aab922b1
commit ed01b3d240
1 changed files with 27 additions and 12 deletions
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39
arch/mips/include/asm/uaccess.h
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@ -104,17 +104,17 @@
#define __access_mask get_fs().seg
#define __access_ok(addr, size, mask) \
({ \
const volatile void __user *__up = addr; \
unsigned long __addr = (unsigned long) __up; \
unsigned long __size = size; \
unsigned long __mask = mask; \
unsigned long __ok; \
\
__ok = (signed long)(__mask & (__addr | (__addr + __size) | \
__ua_size(__size))); \
__ok == 0; \
#define __access_ok(addr, size, mask) \
({ \
unsigned long __addr = (unsigned long) (addr); \
unsigned long __size = size; \
unsigned long __mask = mask; \
unsigned long __ok; \
\
__chk_user_ptr(addr); \
__ok = (signed long)(__mask & (__addr | (__addr + __size) | \
__ua_size(__size))); \
__ok == 0; \
})
#define access_ok(type, addr, size) \
@ -235,6 +235,7 @@ do { \
({ \
int __gu_err; \
\
__chk_user_ptr(ptr); \
__get_user_common((x), size, ptr); \
__gu_err; \
})
@ -315,6 +316,7 @@ do { \
__typeof__(*(ptr)) __pu_val; \
int __pu_err = 0; \
\
__chk_user_ptr(ptr); \
__pu_val = (x); \
switch (size) { \
case 1: __put_user_asm("sb", ptr); break; \
@ -882,7 +884,20 @@ extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
__cu_len; \
})
#define __copy_in_user(to, from, n) __copy_from_user(to, from, n)
#define __copy_in_user(to, from, n) \
({ \
void __user *__cu_to; \
const void __user *__cu_from; \
long __cu_len; \
\
might_sleep(); \
__cu_to = (to); \
__cu_from = (from); \
__cu_len = (n); \
__cu_len = __invoke_copy_from_user(__cu_to, __cu_from, \
__cu_len); \
__cu_len; \
})
#define copy_in_user(to, from, n) \
({ \