diff options
| -rw-r--r-- | arch/sh/include/asm/unaligned-sh4a.h | 164 |
1 files changed, 52 insertions, 112 deletions
diff --git a/arch/sh/include/asm/unaligned-sh4a.h b/arch/sh/include/asm/unaligned-sh4a.h index 9f4dd252c981..c48a9c3420da 100644 --- a/arch/sh/include/asm/unaligned-sh4a.h +++ b/arch/sh/include/asm/unaligned-sh4a.h @@ -18,10 +18,20 @@ * of spill registers and blowing up when building at low optimization * levels. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34777. */ +#include <linux/unaligned/packed_struct.h> #include <linux/types.h> #include <asm/byteorder.h> -static __always_inline u32 __get_unaligned_cpu32(const u8 *p) +static inline u16 sh4a_get_unaligned_cpu16(const u8 *p) +{ +#ifdef __LITTLE_ENDIAN + return p[0] | p[1] << 8; +#else + return p[0] << 8 | p[1]; +#endif +} + +static __always_inline u32 sh4a_get_unaligned_cpu32(const u8 *p) { unsigned long unaligned; @@ -34,218 +44,148 @@ static __always_inline u32 __get_unaligned_cpu32(const u8 *p) return unaligned; } -struct __una_u16 { u16 x __attribute__((packed)); }; -struct __una_u32 { u32 x __attribute__((packed)); }; -struct __una_u64 { u64 x __attribute__((packed)); }; - -static inline u16 __get_unaligned_cpu16(const u8 *p) -{ -#ifdef __LITTLE_ENDIAN - return p[0] | p[1] << 8; -#else - return p[0] << 8 | p[1]; -#endif -} - /* * Even though movua.l supports auto-increment on the read side, it can * only store to r0 due to instruction encoding constraints, so just let * the compiler sort it out on its own. */ -static inline u64 __get_unaligned_cpu64(const u8 *p) +static inline u64 sh4a_get_unaligned_cpu64(const u8 *p) { #ifdef __LITTLE_ENDIAN - return (u64)__get_unaligned_cpu32(p + 4) << 32 | - __get_unaligned_cpu32(p); + return (u64)sh4a_get_unaligned_cpu32(p + 4) << 32 | + sh4a_get_unaligned_cpu32(p); #else - return (u64)__get_unaligned_cpu32(p) << 32 | - __get_unaligned_cpu32(p + 4); + return (u64)sh4a_get_unaligned_cpu32(p) << 32 | + sh4a_get_unaligned_cpu32(p + 4); #endif } static inline u16 get_unaligned_le16(const void *p) { - return le16_to_cpu(__get_unaligned_cpu16(p)); + return le16_to_cpu(sh4a_get_unaligned_cpu16(p)); } static inline u32 get_unaligned_le32(const void *p) { - return le32_to_cpu(__get_unaligned_cpu32(p)); + return le32_to_cpu(sh4a_get_unaligned_cpu32(p)); } static inline u64 get_unaligned_le64(const void *p) { - return le64_to_cpu(__get_unaligned_cpu64(p)); + return le64_to_cpu(sh4a_get_unaligned_cpu64(p)); } static inline u16 get_unaligned_be16(const void *p) { - return be16_to_cpu(__get_unaligned_cpu16(p)); + return be16_to_cpu(sh4a_get_unaligned_cpu16(p)); } static inline u32 get_unaligned_be32(const void *p) { - return be32_to_cpu(__get_unaligned_cpu32(p)); + return be32_to_cpu(sh4a_get_unaligned_cpu32(p)); } static inline u64 get_unaligned_be64(const void *p) { - return be64_to_cpu(__get_unaligned_cpu64(p)); + return be64_to_cpu(sh4a_get_unaligned_cpu64(p)); } -static inline void __put_le16_noalign(u8 *p, u16 val) +static inline void nonnative_put_le16(u16 val, u8 *p) { *p++ = val; *p++ = val >> 8; } -static inline void __put_le32_noalign(u8 *p, u32 val) +static inline void nonnative_put_le32(u32 val, u8 *p) { - __put_le16_noalign(p, val); - __put_le16_noalign(p + 2, val >> 16); + nonnative_put_le16(val, p); + nonnative_put_le16(val >> 16, p + 2); } -static inline void __put_le64_noalign(u8 *p, u64 val) +static inline void nonnative_put_le64(u64 val, u8 *p) { - __put_le32_noalign(p, val); - __put_le32_noalign(p + 4, val >> 32); + nonnative_put_le32(val, p); + nonnative_put_le32(val >> 32, p + 4); } -static inline void __put_be16_noalign(u8 *p, u16 val) +static inline void nonnative_put_be16(u16 val, u8 *p) { *p++ = val >> 8; *p++ = val; } -static inline void __put_be32_noalign(u8 *p, u32 val) +static inline void nonnative_put_be32(u32 val, u8 *p) { - __put_be16_noalign(p, val >> 16); - __put_be16_noalign(p + 2, val); + nonnative_put_be16(val >> 16, p); + nonnative_put_be16(val, p + 2); } -static inline void __put_be64_noalign(u8 *p, u64 val) +static inline void nonnative_put_be64(u64 val, u8 *p) { - __put_be32_noalign(p, val >> 32); - __put_be32_noalign(p + 4, val); + nonnative_put_be32(val >> 32, p); + nonnative_put_be32(val, p + 4); } static inline void put_unaligned_le16(u16 val, void *p) { #ifdef __LITTLE_ENDIAN - ((struct __una_u16 *)p)->x = val; + __put_unaligned_cpu16(val, p); #else - __put_le16_noalign(p, val); + nonnative_put_le16(val, p); #endif } static inline void put_unaligned_le32(u32 val, void *p) { #ifdef __LITTLE_ENDIAN - ((struct __una_u32 *)p)->x = val; + __put_unaligned_cpu32(val, p); #else - __put_le32_noalign(p, val); + nonnative_put_le32(val, p); #endif } static inline void put_unaligned_le64(u64 val, void *p) { #ifdef __LITTLE_ENDIAN - ((struct __una_u64 *)p)->x = val; + __put_unaligned_cpu64(val, p); #else - __put_le64_noalign(p, val); + nonnative_put_le64(val, p); #endif } static inline void put_unaligned_be16(u16 val, void *p) { #ifdef __BIG_ENDIAN - ((struct __una_u16 *)p)->x = val; + __put_unaligned_cpu16(val, p); #else - __put_be16_noalign(p, val); + nonnative_put_be16(val, p); #endif } static inline void put_unaligned_be32(u32 val, void *p) { #ifdef __BIG_ENDIAN - ((struct __una_u32 *)p)->x = val; + __put_unaligned_cpu32(val, p); #else - __put_be32_noalign(p, val); + nonnative_put_be32(val, p); #endif } static inline void put_unaligned_be64(u64 val, void *p) { #ifdef __BIG_ENDIAN - ((struct __una_u64 *)p)->x = val; + __put_unaligned_cpu64(val, p); #else - __put_be64_noalign(p, val); + nonnative_put_be64(val, p); #endif } /* - * Cause a link-time error if we try an unaligned access other than - * 1,2,4 or 8 bytes long + * While it's a bit non-obvious, even though the generic le/be wrappers + * use the __get/put_xxx prefixing, they actually wrap in to the + * non-prefixed get/put_xxx variants as provided above. */ -extern void __bad_unaligned_access_size(void); - -#define __get_unaligned_le(ptr) ((__force typeof(*(ptr)))({ \ - __builtin_choose_expr(sizeof(*(ptr)) == 1, *(ptr), \ - __builtin_choose_expr(sizeof(*(ptr)) == 2, get_unaligned_le16((ptr)), \ - __builtin_choose_expr(sizeof(*(ptr)) == 4, get_unaligned_le32((ptr)), \ - __builtin_choose_expr(sizeof(*(ptr)) == 8, get_unaligned_le64((ptr)), \ - __bad_unaligned_access_size())))); \ - })) - -#define __get_unaligned_be(ptr) ((__force typeof(*(ptr)))({ \ - __builtin_choose_expr(sizeof(*(ptr)) == 1, *(ptr), \ - __builtin_choose_expr(sizeof(*(ptr)) == 2, get_unaligned_be16((ptr)), \ - __builtin_choose_expr(sizeof(*(ptr)) == 4, get_unaligned_be32((ptr)), \ - __builtin_choose_expr(sizeof(*(ptr)) == 8, get_unaligned_be64((ptr)), \ - __bad_unaligned_access_size())))); \ - })) - -#define __put_unaligned_le(val, ptr) ({ \ - void *__gu_p = (ptr); \ - switch (sizeof(*(ptr))) { \ - case 1: \ - *(u8 *)__gu_p = (__force u8)(val); \ - break; \ - case 2: \ - put_unaligned_le16((__force u16)(val), __gu_p); \ - break; \ - case 4: \ - put_unaligned_le32((__force u32)(val), __gu_p); \ - break; \ - case 8: \ - put_unaligned_le64((__force u64)(val), __gu_p); \ - break; \ - default: \ - __bad_unaligned_access_size(); \ - break; \ - } \ - (void)0; }) - -#define __put_unaligned_be(val, ptr) ({ \ - void *__gu_p = (ptr); \ - switch (sizeof(*(ptr))) { \ - case 1: \ - *(u8 *)__gu_p = (__force u8)(val); \ - break; \ - case 2: \ - put_unaligned_be16((__force u16)(val), __gu_p); \ - break; \ - case 4: \ - put_unaligned_be32((__force u32)(val), __gu_p); \ - break; \ - case 8: \ - put_unaligned_be64((__force u64)(val), __gu_p); \ - break; \ - default: \ - __bad_unaligned_access_size(); \ - break; \ - } \ - (void)0; }) +#include <linux/unaligned/generic.h> #ifdef __LITTLE_ENDIAN # define get_unaligned __get_unaligned_le |