1 /* 2 * Keep all the ugly #ifdef for system stuff here 3 */ 4 5 #ifndef __COMPILER_H__ 6 #define __COMPILER_H__ 7 8 #include <stddef.h> 9 10 #ifdef USE_HOSTCC 11 12 #if defined(__BEOS__) || \ 13 defined(__NetBSD__) || \ 14 defined(__FreeBSD__) || \ 15 defined(__sun__) || \ 16 defined(__APPLE__) 17 # include <inttypes.h> 18 #elif defined(__linux__) || defined(__WIN32__) || defined(__MINGW32__) 19 # include <stdint.h> 20 #endif 21 22 #include <errno.h> 23 #include <stdlib.h> 24 #include <stdint.h> 25 #include <stdio.h> 26 #include <string.h> 27 28 extern int errno; 29 30 #if !defined(__WIN32__) && !defined(__MINGW32__) 31 # include <sys/mman.h> 32 #endif 33 34 /* Not all systems (like Windows) has this define, and yes 35 * we do replace/emulate mmap() on those systems ... 36 */ 37 #ifndef MAP_FAILED 38 # define MAP_FAILED ((void *)-1) 39 #endif 40 41 #include <fcntl.h> 42 #ifndef O_BINARY /* should be define'd on __WIN32__ */ 43 #define O_BINARY 0 44 #endif 45 46 #ifdef __linux__ 47 # include <endian.h> 48 # include <byteswap.h> 49 #elif defined(__MACH__) 50 # include <machine/endian.h> 51 typedef unsigned long ulong; 52 typedef unsigned int uint; 53 #endif 54 55 typedef uint8_t __u8; 56 typedef uint16_t __u16; 57 typedef uint32_t __u32; 58 59 #define uswap_16(x) \ 60 ((((x) & 0xff00) >> 8) | \ 61 (((x) & 0x00ff) << 8)) 62 #define uswap_32(x) \ 63 ((((x) & 0xff000000) >> 24) | \ 64 (((x) & 0x00ff0000) >> 8) | \ 65 (((x) & 0x0000ff00) << 8) | \ 66 (((x) & 0x000000ff) << 24)) 67 #define _uswap_64(x, sfx) \ 68 ((((x) & 0xff00000000000000##sfx) >> 56) | \ 69 (((x) & 0x00ff000000000000##sfx) >> 40) | \ 70 (((x) & 0x0000ff0000000000##sfx) >> 24) | \ 71 (((x) & 0x000000ff00000000##sfx) >> 8) | \ 72 (((x) & 0x00000000ff000000##sfx) << 8) | \ 73 (((x) & 0x0000000000ff0000##sfx) << 24) | \ 74 (((x) & 0x000000000000ff00##sfx) << 40) | \ 75 (((x) & 0x00000000000000ff##sfx) << 56)) 76 #if defined(__GNUC__) 77 # define uswap_64(x) _uswap_64(x, ull) 78 #else 79 # define uswap_64(x) _uswap_64(x, ) 80 #endif 81 82 #if __BYTE_ORDER == __LITTLE_ENDIAN 83 # define cpu_to_le16(x) (x) 84 # define cpu_to_le32(x) (x) 85 # define cpu_to_le64(x) (x) 86 # define le16_to_cpu(x) (x) 87 # define le32_to_cpu(x) (x) 88 # define le64_to_cpu(x) (x) 89 # define cpu_to_be16(x) uswap_16(x) 90 # define cpu_to_be32(x) uswap_32(x) 91 # define cpu_to_be64(x) uswap_64(x) 92 # define be16_to_cpu(x) uswap_16(x) 93 # define be32_to_cpu(x) uswap_32(x) 94 # define be64_to_cpu(x) uswap_64(x) 95 #else 96 # define cpu_to_le16(x) uswap_16(x) 97 # define cpu_to_le32(x) uswap_32(x) 98 # define cpu_to_le64(x) uswap_64(x) 99 # define le16_to_cpu(x) uswap_16(x) 100 # define le32_to_cpu(x) uswap_32(x) 101 # define le64_to_cpu(x) uswap_64(x) 102 # define cpu_to_be16(x) (x) 103 # define cpu_to_be32(x) (x) 104 # define cpu_to_be64(x) (x) 105 # define be16_to_cpu(x) (x) 106 # define be32_to_cpu(x) (x) 107 # define be64_to_cpu(x) (x) 108 #endif 109 110 #else /* !USE_HOSTCC */ 111 112 #include <linux/string.h> 113 #include <linux/types.h> 114 #include <asm/byteorder.h> 115 116 /* Types for `void *' pointers. */ 117 #if __WORDSIZE == 64 118 typedef unsigned long int uintptr_t; 119 #else 120 typedef unsigned int uintptr_t; 121 #endif 122 123 #endif 124 125 /* compiler options */ 126 #define uninitialized_var(x) x = x 127 128 #define likely(x) __builtin_expect(!!(x), 1) 129 #define unlikely(x) __builtin_expect(!!(x), 0) 130 131 #endif 132