diff options
Diffstat (limited to 'arch/mn10300/include/asm/uaccess.h')
| -rw-r--r-- | arch/mn10300/include/asm/uaccess.h | 73 |
1 files changed, 39 insertions, 34 deletions
diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h index 8a3a4dd5576..167e10ff06d 100644 --- a/arch/mn10300/include/asm/uaccess.h +++ b/arch/mn10300/include/asm/uaccess.h @@ -129,42 +129,47 @@ extern int fixup_exception(struct pt_regs *regs); struct __large_struct { unsigned long buf[100]; }; #define __m(x) (*(struct __large_struct *)(x)) -#define __get_user_nocheck(x, ptr, size) \ -({ \ - __typeof(*(ptr)) __gu_val; \ - unsigned long __gu_addr; \ - int __gu_err; \ - __gu_addr = (unsigned long) (ptr); \ - switch (size) { \ - case 1: __get_user_asm("bu"); break; \ - case 2: __get_user_asm("hu"); break; \ - case 4: __get_user_asm("" ); break; \ - default: __get_user_unknown(); break; \ - } \ - x = (__typeof__(*(ptr))) __gu_val; \ - __gu_err; \ +#define __get_user_nocheck(x, ptr, size) \ +({ \ + unsigned long __gu_addr; \ + int __gu_err; \ + __gu_addr = (unsigned long) (ptr); \ + switch (size) { \ + case 1: { \ + unsigned char __gu_val; \ + __get_user_asm("bu"); \ + (x) = *(__force __typeof__(*(ptr))*) &__gu_val; \ + break; \ + } \ + case 2: { \ + unsigned short __gu_val; \ + __get_user_asm("hu"); \ + (x) = *(__force __typeof__(*(ptr))*) &__gu_val; \ + break; \ + } \ + case 4: { \ + unsigned int __gu_val; \ + __get_user_asm(""); \ + (x) = *(__force __typeof__(*(ptr))*) &__gu_val; \ + break; \ + } \ + default: \ + __get_user_unknown(); \ + break; \ + } \ + __gu_err; \ }) -#define __get_user_check(x, ptr, size) \ -({ \ - __typeof__(*(ptr)) __gu_val; \ - unsigned long __gu_addr; \ - int __gu_err; \ - __gu_addr = (unsigned long) (ptr); \ - if (likely(__access_ok(__gu_addr,size))) { \ - switch (size) { \ - case 1: __get_user_asm("bu"); break; \ - case 2: __get_user_asm("hu"); break; \ - case 4: __get_user_asm("" ); break; \ - default: __get_user_unknown(); break; \ - } \ - } \ - else { \ - __gu_err = -EFAULT; \ - __gu_val = 0; \ - } \ - x = (__typeof__(*(ptr))) __gu_val; \ - __gu_err; \ +#define __get_user_check(x, ptr, size) \ +({ \ + int _e; \ + if (likely(__access_ok((unsigned long) (ptr), (size)))) \ + _e = __get_user_nocheck((x), (ptr), (size)); \ + else { \ + _e = -EFAULT; \ + (x) = (__typeof__(x))0; \ + } \ + _e; \ }) #define __get_user_asm(INSN) \ |