| 2aa62f2b |
1 | /* $NetBSD: bswap.h,v 1.12 2006/05/22 16:28:27 drochner Exp $ */\r |
| 2 | \r |
| 3 | /* Written by Manuel Bouyer. Public domain */\r |
| 4 | \r |
| 5 | #ifndef _SYS_BSWAP_H_\r |
| 6 | #define _SYS_BSWAP_H_\r |
| 7 | \r |
| 8 | #ifndef _LOCORE\r |
| 9 | #include <sys/EfiCdefs.h>\r |
| 10 | #include <sys/types.h>\r |
| 11 | \r |
| 12 | #include <machine/bswap.h>\r |
| 13 | \r |
| 14 | __BEGIN_DECLS\r |
| 15 | /* Always declare the functions in case their address is taken (etc) */\r |
| 16 | #if !defined(__BSWAP_RENAME)\r |
| 17 | uint16_t bswap16(uint16_t) __attribute__((__const__));\r |
| 18 | uint32_t bswap32(uint32_t) __attribute__((__const__));\r |
| 19 | #else\r |
| 20 | uint16_t bswap16(uint16_t) __RENAME(__bswap16) __attribute__((__const__));\r |
| 21 | uint32_t bswap32(uint32_t) __RENAME(__bswap32) __attribute__((__const__));\r |
| 22 | #endif\r |
| 23 | uint64_t bswap64(uint64_t) __attribute__((__const__));\r |
| 24 | __END_DECLS\r |
| 25 | \r |
| 26 | #if defined(__GNUC__) && defined(__OPTIMIZE__)\r |
| 27 | \r |
| 28 | /* machine/byte_swap.h might have defined inline versions */\r |
| 29 | #ifndef __BYTE_SWAP_U64_VARIABLE\r |
| 30 | #define __BYTE_SWAP_U64_VARIABLE bswap64\r |
| 31 | #endif\r |
| 32 | \r |
| 33 | #ifndef __BYTE_SWAP_U32_VARIABLE\r |
| 34 | #define __BYTE_SWAP_U32_VARIABLE bswap32\r |
| 35 | #endif\r |
| 36 | \r |
| 37 | #ifndef __BYTE_SWAP_U16_VARIABLE\r |
| 38 | #define __BYTE_SWAP_U16_VARIABLE bswap16\r |
| 39 | #endif\r |
| 40 | \r |
| 41 | #define __byte_swap_u64_constant(x) \\r |
| 42 | ((uint64_t) \\r |
| 43 | ((((x) & 0xff00000000000000ull) >> 56) | \\r |
| 44 | (((x) & 0x00ff000000000000ull) >> 40) | \\r |
| 45 | (((x) & 0x0000ff0000000000ull) >> 24) | \\r |
| 46 | (((x) & 0x000000ff00000000ull) >> 8) | \\r |
| 47 | (((x) & 0x00000000ff000000ull) << 8) | \\r |
| 48 | (((x) & 0x0000000000ff0000ull) << 24) | \\r |
| 49 | (((x) & 0x000000000000ff00ull) << 40) | \\r |
| 50 | (((x) & 0x00000000000000ffull) << 56)))\r |
| 51 | \r |
| 52 | #define __byte_swap_u32_constant(x) \\r |
| 53 | ((((x) & 0xff000000) >> 24) | \\r |
| 54 | (((x) & 0x00ff0000) >> 8) | \\r |
| 55 | (((x) & 0x0000ff00) << 8) | \\r |
| 56 | (((x) & 0x000000ff) << 24))\r |
| 57 | \r |
| 58 | #define __byte_swap_u16_constant(x) \\r |
| 59 | ((((x) & 0xff00) >> 8) | \\r |
| 60 | (((x) & 0x00ff) << 8))\r |
| 61 | \r |
| 62 | #define bswap64(x) \\r |
| 63 | (__builtin_constant_p((x)) ? \\r |
| 64 | __byte_swap_u64_constant(x) : __BYTE_SWAP_U64_VARIABLE(x))\r |
| 65 | \r |
| 66 | #define bswap32(x) \\r |
| 67 | (__builtin_constant_p((x)) ? \\r |
| 68 | __byte_swap_u32_constant(x) : __BYTE_SWAP_U32_VARIABLE(x))\r |
| 69 | \r |
| 70 | #define bswap16(x) \\r |
| 71 | (__builtin_constant_p((x)) ? \\r |
| 72 | __byte_swap_u16_constant(x) : __BYTE_SWAP_U16_VARIABLE(x))\r |
| 73 | \r |
| 74 | #endif /* __GNUC__ && __OPTIMIZE__ */\r |
| 75 | #endif /* !_LOCORE */\r |
| 76 | \r |
| 77 | #endif /* !_SYS_BSWAP_H_ */\r |
projects / mirror_edk2.git / blame