diff options
Diffstat (limited to 'include/asm-mips/uaccess.h')
| -rw-r--r-- | include/asm-mips/uaccess.h | 158 |
1 files changed, 70 insertions, 88 deletions
diff --git a/include/asm-mips/uaccess.h b/include/asm-mips/uaccess.h index 5c2c98329012..41bb96bb2120 100644 --- a/include/asm-mips/uaccess.h +++ b/include/asm-mips/uaccess.h @@ -196,63 +196,55 @@ __get_user_nocheck((x),(ptr),sizeof(*(ptr))) struct __large_struct { unsigned long buf[100]; }; -#define __m(x) (*(struct __large_struct *)(x)) +#define __m(x) (*(struct __large_struct __user *)(x)) /* * Yuck. We need two variants, one for 64bit operation and one * for 32 bit mode and old iron. */ #ifdef __mips64 -#define __GET_USER_DW(__gu_err) __get_user_asm("ld", __gu_err) +#define __GET_USER_DW(ptr) __get_user_asm("ld", ptr) #else -#define __GET_USER_DW(__gu_err) __get_user_asm_ll32(__gu_err) +#define __GET_USER_DW(ptr) __get_user_asm_ll32(ptr) #endif #define __get_user_nocheck(x,ptr,size) \ ({ \ - __typeof(*(ptr)) __gu_val = 0; \ - long __gu_addr; \ + __typeof(*(ptr)) __gu_val = (__typeof(*(ptr))) 0; \ long __gu_err = 0; \ \ - might_sleep(); \ - __gu_addr = (long) (ptr); \ switch (size) { \ - case 1: __get_user_asm("lb", __gu_err); break; \ - case 2: __get_user_asm("lh", __gu_err); break; \ - case 4: __get_user_asm("lw", __gu_err); break; \ - case 8: __GET_USER_DW(__gu_err); break; \ + case 1: __get_user_asm("lb", ptr); break; \ + case 2: __get_user_asm("lh", ptr); break; \ + case 4: __get_user_asm("lw", ptr); break; \ + case 8: __GET_USER_DW(ptr); break; \ default: __get_user_unknown(); break; \ } \ - x = (__typeof__(*(ptr))) __gu_val; \ + (x) = (__typeof__(*(ptr))) __gu_val; \ __gu_err; \ }) #define __get_user_check(x,ptr,size) \ ({ \ + const __typeof__(*(ptr)) __user * __gu_addr = (ptr); \ __typeof__(*(ptr)) __gu_val = 0; \ - long __gu_addr; \ - long __gu_err; \ - \ - might_sleep(); \ - __gu_addr = (long) (ptr); \ - __gu_err = access_ok(VERIFY_READ, (void *) __gu_addr, size) \ - ? 0 : -EFAULT; \ + long __gu_err = -EFAULT; \ \ - if (likely(!__gu_err)) { \ + if (likely(access_ok(VERIFY_READ, __gu_addr, size))) { \ switch (size) { \ - case 1: __get_user_asm("lb", __gu_err); break; \ - case 2: __get_user_asm("lh", __gu_err); break; \ - case 4: __get_user_asm("lw", __gu_err); break; \ - case 8: __GET_USER_DW(__gu_err); break; \ + case 1: __get_user_asm("lb", __gu_addr); break; \ + case 2: __get_user_asm("lh", __gu_addr); break; \ + case 4: __get_user_asm("lw", __gu_addr); break; \ + case 8: __GET_USER_DW(__gu_addr); break; \ default: __get_user_unknown(); break; \ } \ } \ - x = (__typeof__(*(ptr))) __gu_val; \ + (x) = (__typeof__(*(ptr))) __gu_val; \ __gu_err; \ }) -#define __get_user_asm(insn,__gu_err) \ -({ \ +#define __get_user_asm(insn, addr) \ +{ \ __asm__ __volatile__( \ "1: " insn " %1, %3 \n" \ "2: \n" \ @@ -264,20 +256,20 @@ struct __large_struct { unsigned long buf[100]; }; " "__UA_ADDR "\t1b, 3b \n" \ " .previous \n" \ : "=r" (__gu_err), "=r" (__gu_val) \ - : "0" (__gu_err), "o" (__m(__gu_addr)), "i" (-EFAULT)); \ -}) + : "0" (0), "o" (__m(addr)), "i" (-EFAULT)); \ +} /* * Get a long long 64 using 32 bit registers. */ -#define __get_user_asm_ll32(__gu_err) \ -({ \ +#define __get_user_asm_ll32(addr) \ +{ \ __asm__ __volatile__( \ - "1: lw %1, %3 \n" \ - "2: lw %D1, %4 \n" \ + "1: lw %1, (%3) \n" \ + "2: lw %D1, 4(%3) \n" \ " move %0, $0 \n" \ "3: .section .fixup,\"ax\" \n" \ - "4: li %0, %5 \n" \ + "4: li %0, %4 \n" \ " move %1, $0 \n" \ " move %D1, $0 \n" \ " j 3b \n" \ @@ -287,9 +279,8 @@ struct __large_struct { unsigned long buf[100]; }; " " __UA_ADDR " 2b, 4b \n" \ " .previous \n" \ : "=r" (__gu_err), "=&r" (__gu_val) \ - : "0" (__gu_err), "o" (__m(__gu_addr)), \ - "o" (__m(__gu_addr + 4)), "i" (-EFAULT)); \ -}) + : "0" (0), "r" (addr), "i" (-EFAULT)); \ +} extern void __get_user_unknown(void); @@ -298,25 +289,22 @@ extern void __get_user_unknown(void); * for 32 bit mode and old iron. */ #ifdef __mips64 -#define __PUT_USER_DW(__pu_val) __put_user_asm("sd", __pu_val) +#define __PUT_USER_DW(ptr) __put_user_asm("sd", ptr) #else -#define __PUT_USER_DW(__pu_val) __put_user_asm_ll32(__pu_val) +#define __PUT_USER_DW(ptr) __put_user_asm_ll32(ptr) #endif #define __put_user_nocheck(x,ptr,size) \ ({ \ __typeof__(*(ptr)) __pu_val; \ - long __pu_addr; \ long __pu_err = 0; \ \ - might_sleep(); \ __pu_val = (x); \ - __pu_addr = (long) (ptr); \ switch (size) { \ - case 1: __put_user_asm("sb", __pu_val); break; \ - case 2: __put_user_asm("sh", __pu_val); break; \ - case 4: __put_user_asm("sw", __pu_val); break; \ - case 8: __PUT_USER_DW(__pu_val); break; \ + case 1: __put_user_asm("sb", ptr); break; \ + case 2: __put_user_asm("sh", ptr); break; \ + case 4: __put_user_asm("sw", ptr); break; \ + case 8: __PUT_USER_DW(ptr); break; \ default: __put_user_unknown(); break; \ } \ __pu_err; \ @@ -324,30 +312,24 @@ extern void __get_user_unknown(void); #define __put_user_check(x,ptr,size) \ ({ \ - __typeof__(*(ptr)) __pu_val; \ - long __pu_addr; \ - long __pu_err; \ + __typeof__(*(ptr)) __user *__pu_addr = (ptr); \ + __typeof__(*(ptr)) __pu_val = (x); \ + long __pu_err = -EFAULT; \ \ - might_sleep(); \ - __pu_val = (x); \ - __pu_addr = (long) (ptr); \ - __pu_err = access_ok(VERIFY_WRITE, (void *) __pu_addr, size) \ - ? 0 : -EFAULT; \ - \ - if (likely(!__pu_err)) { \ + if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { \ switch (size) { \ - case 1: __put_user_asm("sb", __pu_val); break; \ - case 2: __put_user_asm("sh", __pu_val); break; \ - case 4: __put_user_asm("sw", __pu_val); break; \ - case 8: __PUT_USER_DW(__pu_val); break; \ + case 1: __put_user_asm("sb", __pu_addr); break; \ + case 2: __put_user_asm("sh", __pu_addr); break; \ + case 4: __put_user_asm("sw", __pu_addr); break; \ + case 8: __PUT_USER_DW(__pu_addr); break; \ default: __put_user_unknown(); break; \ } \ } \ __pu_err; \ }) -#define __put_user_asm(insn, __pu_val) \ -({ \ +#define __put_user_asm(insn, ptr) \ +{ \ __asm__ __volatile__( \ "1: " insn " %z2, %3 # __put_user_asm\n" \ "2: \n" \ @@ -359,18 +341,18 @@ extern void __get_user_unknown(void); " " __UA_ADDR " 1b, 3b \n" \ " .previous \n" \ : "=r" (__pu_err) \ - : "0" (__pu_err), "Jr" (__pu_val), "o" (__m(__pu_addr)), \ + : "0" (0), "Jr" (__pu_val), "o" (__m(ptr)), \ "i" (-EFAULT)); \ -}) +} -#define __put_user_asm_ll32(__pu_val) \ -({ \ +#define __put_user_asm_ll32(ptr) \ +{ \ __asm__ __volatile__( \ - "1: sw %2, %3 # __put_user_asm_ll32 \n" \ - "2: sw %D2, %4 \n" \ + "1: sw %2, (%3) # __put_user_asm_ll32 \n" \ + "2: sw %D2, 4(%3) \n" \ "3: \n" \ " .section .fixup,\"ax\" \n" \ - "4: li %0, %5 \n" \ + "4: li %0, %4 \n" \ " j 3b \n" \ " .previous \n" \ " .section __ex_table,\"a\" \n" \ @@ -378,9 +360,9 @@ extern void __get_user_unknown(void); " " __UA_ADDR " 2b, 4b \n" \ " .previous" \ : "=r" (__pu_err) \ - : "0" (__pu_err), "r" (__pu_val), "o" (__m(__pu_addr)), \ - "o" (__m(__pu_addr + 4)), "i" (-EFAULT)); \ -}) + : "0" (0), "r" (__pu_val), "r" (ptr), \ + "i" (-EFAULT)); \ +} extern void __put_user_unknown(void); @@ -403,7 +385,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); #define __invoke_copy_to_user(to,from,n) \ ({ \ - register void *__cu_to_r __asm__ ("$4"); \ + register void __user *__cu_to_r __asm__ ("$4"); \ register const void *__cu_from_r __asm__ ("$5"); \ register long __cu_len_r __asm__ ("$6"); \ \ @@ -435,7 +417,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); */ #define __copy_to_user(to,from,n) \ ({ \ - void *__cu_to; \ + void __user *__cu_to; \ const void *__cu_from; \ long __cu_len; \ \ @@ -465,7 +447,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); */ #define copy_to_user(to,from,n) \ ({ \ - void *__cu_to; \ + void __user *__cu_to; \ const void *__cu_from; \ long __cu_len; \ \ @@ -482,7 +464,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); #define __invoke_copy_from_user(to,from,n) \ ({ \ register void *__cu_to_r __asm__ ("$4"); \ - register const void *__cu_from_r __asm__ ("$5"); \ + register const void __user *__cu_from_r __asm__ ("$5"); \ register long __cu_len_r __asm__ ("$6"); \ \ __cu_to_r = (to); \ @@ -521,7 +503,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); #define __copy_from_user(to,from,n) \ ({ \ void *__cu_to; \ - const void *__cu_from; \ + const void __user *__cu_from; \ long __cu_len; \ \ might_sleep(); \ @@ -552,7 +534,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); #define copy_from_user(to,from,n) \ ({ \ void *__cu_to; \ - const void *__cu_from; \ + const void __user *__cu_from; \ long __cu_len; \ \ might_sleep(); \ @@ -569,8 +551,8 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); #define copy_in_user(to,from,n) \ ({ \ - void *__cu_to; \ - const void *__cu_from; \ + void __user *__cu_to; \ + const void __user *__cu_from; \ long __cu_len; \ \ might_sleep(); \ @@ -596,7 +578,7 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n); * On success, this will be zero. */ static inline __kernel_size_t -__clear_user(void *addr, __kernel_size_t size) +__clear_user(void __user *addr, __kernel_size_t size) { __kernel_size_t res; @@ -616,7 +598,7 @@ __clear_user(void *addr, __kernel_size_t size) #define clear_user(addr,n) \ ({ \ - void * __cl_addr = (addr); \ + void __user * __cl_addr = (addr); \ unsigned long __cl_size = (n); \ if (__cl_size && access_ok(VERIFY_WRITE, \ ((unsigned long)(__cl_addr)), __cl_size)) \ @@ -645,7 +627,7 @@ __clear_user(void *addr, __kernel_size_t size) * and returns @count. */ static inline long -__strncpy_from_user(char *__to, const char *__from, long __len) +__strncpy_from_user(char *__to, const char __user *__from, long __len) { long res; @@ -682,7 +664,7 @@ __strncpy_from_user(char *__to, const char *__from, long __len) * and returns @count. */ static inline long -strncpy_from_user(char *__to, const char *__from, long __len) +strncpy_from_user(char *__to, const char __user *__from, long __len) { long res; @@ -701,7 +683,7 @@ strncpy_from_user(char *__to, const char *__from, long __len) } /* Returns: 0 if bad, string length+1 (memory size) of string if ok */ -static inline long __strlen_user(const char *s) +static inline long __strlen_user(const char __user *s) { long res; @@ -731,7 +713,7 @@ static inline long __strlen_user(const char *s) * If there is a limit on the length of a valid string, you may wish to * consider using strnlen_user() instead. */ -static inline long strlen_user(const char *s) +static inline long strlen_user(const char __user *s) { long res; @@ -748,7 +730,7 @@ static inline long strlen_user(const char *s) } /* Returns: 0 if bad, string length+1 (memory size) of string if ok */ -static inline long __strnlen_user(const char *s, long n) +static inline long __strnlen_user(const char __user *s, long n) { long res; @@ -779,7 +761,7 @@ static inline long __strnlen_user(const char *s, long n) * If there is a limit on the length of a valid string, you may wish to * consider using strnlen_user() instead. */ -static inline long strnlen_user(const char *s, long n) +static inline long strnlen_user(const char __user *s, long n) { long res; 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