1 #ifndef __ALPHA_UNALIGNED_H
2 #define __ALPHA_UNALIGNED_H
5 * The main single-value unaligned transfer routines.
7 #define get_unaligned(ptr) \
8 ((__typeof__(*(ptr)))__get_unaligned((ptr), sizeof(*(ptr))))
9 #define put_unaligned(x,ptr) \
10 __put_unaligned((unsigned long)(x), (ptr), sizeof(*(ptr)))
13 * This is a silly but good way to make sure that
14 * the get/put functions are indeed always optimized,
15 * and that we use the correct sizes.
17 extern void bad_unaligned_access_length(void) __attribute__((noreturn));
20 * EGCS 1.1 knows about arbitrary unaligned loads. Define some
21 * packed structures to talk about such things with.
24 struct __una_u64 { __u64 x __attribute__((packed)); };
25 struct __una_u32 { __u32 x __attribute__((packed)); };
26 struct __una_u16 { __u16 x __attribute__((packed)); };
29 * Elemental unaligned loads
32 extern inline unsigned long __uldq(const unsigned long * r11)
34 const struct __una_u64 *ptr = (const struct __una_u64 *) r11;
38 extern inline unsigned long __uldl(const unsigned int * r11)
40 const struct __una_u32 *ptr = (const struct __una_u32 *) r11;
44 extern inline unsigned long __uldw(const unsigned short * r11)
46 const struct __una_u16 *ptr = (const struct __una_u16 *) r11;
51 * Elemental unaligned stores
54 extern inline void __ustq(unsigned long r5, unsigned long * r11)
56 struct __una_u64 *ptr = (struct __una_u64 *) r11;
60 extern inline void __ustl(unsigned long r5, unsigned int * r11)
62 struct __una_u32 *ptr = (struct __una_u32 *) r11;
66 extern inline void __ustw(unsigned long r5, unsigned short * r11)
68 struct __una_u16 *ptr = (struct __una_u16 *) r11;
72 extern inline unsigned long __get_unaligned(const void *ptr, size_t size)
77 val = *(const unsigned char *)ptr;
80 val = __uldw((const unsigned short *)ptr);
83 val = __uldl((const unsigned int *)ptr);
86 val = __uldq((const unsigned long *)ptr);
89 bad_unaligned_access_length();
94 extern inline void __put_unaligned(unsigned long val, void *ptr, size_t size)
98 *(unsigned char *)ptr = (val);
101 __ustw(val, (unsigned short *)ptr);
104 __ustl(val, (unsigned int *)ptr);
107 __ustq(val, (unsigned long *)ptr);
110 bad_unaligned_access_length();