diff options
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/include/asm/uaccess_32.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/sh/include/asm/uaccess_32.h b/arch/sh/include/asm/uaccess_32.h index 624cf55acc27..5d7ddc092afd 100644 --- a/arch/sh/include/asm/uaccess_32.h +++ b/arch/sh/include/asm/uaccess_32.h @@ -26,6 +26,9 @@ do { \ case 4: \ __get_user_asm(x, ptr, retval, "l"); \ break; \ + case 8: \ + __get_user_u64(x, ptr, retval); \ + break; \ default: \ __get_user_unknown(); \ break; \ @@ -66,6 +69,56 @@ do { \ extern void __get_user_unknown(void); +#if defined(CONFIG_CPU_LITTLE_ENDIAN) +#define __get_user_u64(x, addr, err) \ +({ \ +__asm__ __volatile__( \ + "1:\n\t" \ + "mov.l %2,%R1\n\t" \ + "mov.l %T2,%S1\n\t" \ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "3:\n\t" \ + "mov #0,%R1\n\t" \ + "mov #0,%S1\n\t" \ + "mov.l 4f, %0\n\t" \ + "jmp @%0\n\t" \ + " mov %3, %0\n\t" \ + ".balign 4\n" \ + "4: .long 2b\n\t" \ + ".previous\n" \ + ".section __ex_table,\"a\"\n\t" \ + ".long 1b, 3b\n\t" \ + ".long 1b + 2, 3b\n\t" \ + ".previous" \ + :"=&r" (err), "=&r" (x) \ + :"m" (__m(addr)), "i" (-EFAULT), "0" (err)); }) +#else +#define __get_user_u64(x, addr, err) \ +({ \ +__asm__ __volatile__( \ + "1:\n\t" \ + "mov.l %2,%S1\n\t" \ + "mov.l %T2,%R1\n\t" \ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "3:\n\t" \ + "mov #0,%S1\n\t" \ + "mov #0,%R1\n\t" \ + "mov.l 4f, %0\n\t" \ + "jmp @%0\n\t" \ + " mov %3, %0\n\t" \ + ".balign 4\n" \ + "4: .long 2b\n\t" \ + ".previous\n" \ + ".section __ex_table,\"a\"\n\t" \ + ".long 1b, 3b\n\t" \ + ".long 1b + 2, 3b\n\t" \ + ".previous" \ + :"=&r" (err), "=&r" (x) \ + :"m" (__m(addr)), "i" (-EFAULT), "0" (err)); }) +#endif + #define __put_user_size(x,ptr,size,retval) \ do { \ retval = 0; \ |