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