diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/lzo.h | 44 | ||||
| -rw-r--r-- | include/linux/unaligned/access_ok.h | 66 | ||||
| -rw-r--r-- | include/linux/unaligned/generic.h | 71 |
3 files changed, 181 insertions, 0 deletions
diff --git a/include/linux/lzo.h b/include/linux/lzo.h new file mode 100644 index 0000000..d793497 --- /dev/null +++ b/include/linux/lzo.h @@ -0,0 +1,44 @@ +#ifndef __LZO_H__ +#define __LZO_H__ +/* + * LZO Public Kernel Interface + * A mini subset of the LZO real-time data compression library + * + * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com> + * + * The full LZO package can be found at: + * http://www.oberhumer.com/opensource/lzo/ + * + * Changed for kernel use by: + * Nitin Gupta <nitingupta910@gmail.com> + * Richard Purdie <rpurdie@openedhand.com> + */ + +#define LZO1X_MEM_COMPRESS (16384 * sizeof(unsigned char *)) +#define LZO1X_1_MEM_COMPRESS LZO1X_MEM_COMPRESS + +#define lzo1x_worst_compress(x) ((x) + ((x) / 16) + 64 + 3) + +/* This requires 'workmem' of size LZO1X_1_MEM_COMPRESS */ +int lzo1x_1_compress(const unsigned char *src, size_t src_len, + unsigned char *dst, size_t *dst_len, void *wrkmem); + +/* safe decompression with overrun testing */ +int lzo1x_decompress_safe(const unsigned char *src, size_t src_len, + unsigned char *dst, size_t *dst_len); + +/* + * Return values (< 0 = Error) + */ +#define LZO_E_OK 0 +#define LZO_E_ERROR (-1) +#define LZO_E_OUT_OF_MEMORY (-2) +#define LZO_E_NOT_COMPRESSIBLE (-3) +#define LZO_E_INPUT_OVERRUN (-4) +#define LZO_E_OUTPUT_OVERRUN (-5) +#define LZO_E_LOOKBEHIND_OVERRUN (-6) +#define LZO_E_EOF_NOT_FOUND (-7) +#define LZO_E_INPUT_NOT_CONSUMED (-8) +#define LZO_E_NOT_YET_IMPLEMENTED (-9) + +#endif diff --git a/include/linux/unaligned/access_ok.h b/include/linux/unaligned/access_ok.h new file mode 100644 index 0000000..5f46eee --- /dev/null +++ b/include/linux/unaligned/access_ok.h @@ -0,0 +1,66 @@ +#ifndef _LINUX_UNALIGNED_ACCESS_OK_H +#define _LINUX_UNALIGNED_ACCESS_OK_H + +#include <asm/byteorder.h> + +static inline u16 get_unaligned_le16(const void *p) +{ + return le16_to_cpup((__le16 *)p); +} + +static inline u32 get_unaligned_le32(const void *p) +{ + return le32_to_cpup((__le32 *)p); +} + +static inline u64 get_unaligned_le64(const void *p) +{ + return le64_to_cpup((__le64 *)p); +} + +static inline u16 get_unaligned_be16(const void *p) +{ + return be16_to_cpup((__be16 *)p); +} + +static inline u32 get_unaligned_be32(const void *p) +{ + return be32_to_cpup((__be32 *)p); +} + +static inline u64 get_unaligned_be64(const void *p) +{ + return be64_to_cpup((__be64 *)p); +} + +static inline void put_unaligned_le16(u16 val, void *p) +{ + *((__le16 *)p) = cpu_to_le16(val); +} + +static inline void put_unaligned_le32(u32 val, void *p) +{ + *((__le32 *)p) = cpu_to_le32(val); +} + +static inline void put_unaligned_le64(u64 val, void *p) +{ + *((__le64 *)p) = cpu_to_le64(val); +} + +static inline void put_unaligned_be16(u16 val, void *p) +{ + *((__be16 *)p) = cpu_to_be16(val); +} + +static inline void put_unaligned_be32(u32 val, void *p) +{ + *((__be32 *)p) = cpu_to_be32(val); +} + +static inline void put_unaligned_be64(u64 val, void *p) +{ + *((__be64 *)p) = cpu_to_be64(val); +} + +#endif /* _LINUX_UNALIGNED_ACCESS_OK_H */ diff --git a/include/linux/unaligned/generic.h b/include/linux/unaligned/generic.h new file mode 100644 index 0000000..cc688e1 --- /dev/null +++ b/include/linux/unaligned/generic.h @@ -0,0 +1,71 @@ +#ifndef _LINUX_UNALIGNED_GENERIC_H +#define _LINUX_UNALIGNED_GENERIC_H + +/* define __force to nothing in U-Boot */ +#define __force + +/* + * Cause a link-time error if we try an unaligned access other than + * 1,2,4 or 8 bytes long + */ +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; }) + +#endif /* _LINUX_UNALIGNED_GENERIC_H */ |