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__) || defined(__FreeBSD__) 48 # include <machine/endian.h> 49 typedef unsigned long ulong; 50 #endif 51 52 typedef uint8_t __u8; 53 typedef uint16_t __u16; 54 typedef uint32_t __u32; 55 typedef unsigned int uint; 56 57 #define uswap_16(x) \ 58 ((((x) & 0xff00) >> 8) | \ 59 (((x) & 0x00ff) << 8)) 60 #define uswap_32(x) \ 61 ((((x) & 0xff000000) >> 24) | \ 62 (((x) & 0x00ff0000) >> 8) | \ 63 (((x) & 0x0000ff00) << 8) | \ 64 (((x) & 0x000000ff) << 24)) 65 #define _uswap_64(x, sfx) \ 66 ((((x) & 0xff00000000000000##sfx) >> 56) | \ 67 (((x) & 0x00ff000000000000##sfx) >> 40) | \ 68 (((x) & 0x0000ff0000000000##sfx) >> 24) | \ 69 (((x) & 0x000000ff00000000##sfx) >> 8) | \ 70 (((x) & 0x00000000ff000000##sfx) << 8) | \ 71 (((x) & 0x0000000000ff0000##sfx) << 24) | \ 72 (((x) & 0x000000000000ff00##sfx) << 40) | \ 73 (((x) & 0x00000000000000ff##sfx) << 56)) 74 #if defined(__GNUC__) 75 # define uswap_64(x) _uswap_64(x, ull) 76 #else 77 # define uswap_64(x) _uswap_64(x, ) 78 #endif 79 80 #if __BYTE_ORDER == __LITTLE_ENDIAN 81 # define cpu_to_le16(x) (x) 82 # define cpu_to_le32(x) (x) 83 # define cpu_to_le64(x) (x) 84 # define le16_to_cpu(x) (x) 85 # define le32_to_cpu(x) (x) 86 # define le64_to_cpu(x) (x) 87 # define cpu_to_be16(x) uswap_16(x) 88 # define cpu_to_be32(x) uswap_32(x) 89 # define cpu_to_be64(x) uswap_64(x) 90 # define be16_to_cpu(x) uswap_16(x) 91 # define be32_to_cpu(x) uswap_32(x) 92 # define be64_to_cpu(x) uswap_64(x) 93 #else 94 # define cpu_to_le16(x) uswap_16(x) 95 # define cpu_to_le32(x) uswap_32(x) 96 # define cpu_to_le64(x) uswap_64(x) 97 # define le16_to_cpu(x) uswap_16(x) 98 # define le32_to_cpu(x) uswap_32(x) 99 # define le64_to_cpu(x) uswap_64(x) 100 # define cpu_to_be16(x) (x) 101 # define cpu_to_be32(x) (x) 102 # define cpu_to_be64(x) (x) 103 # define be16_to_cpu(x) (x) 104 # define be32_to_cpu(x) (x) 105 # define be64_to_cpu(x) (x) 106 #endif 107 108 #else /* !USE_HOSTCC */ 109 110 #include <linux/string.h> 111 #include <linux/types.h> 112 #include <asm/byteorder.h> 113 114 #if __SIZEOF_LONG__ == 8 115 # define __WORDSIZE 64 116 #elif __SIZEOF_LONG__ == 4 117 # define __WORDSIZE 32 118 #else 119 /* 120 * Assume 32-bit for now - only newer toolchains support this feature and 121 * this is only required for sandbox support at present. 122 */ 123 #define __WORDSIZE 32 124 #endif 125 126 /* Types for `void *' pointers. */ 127 #if __WORDSIZE == 64 128 typedef unsigned long int uintptr_t; 129 #elif __WORDSIZE == 32 130 typedef unsigned int uintptr_t; 131 #else 132 #error "__WORDSIZE has unexpected value" 133 #endif 134 135 #endif 136 137 /* compiler options */ 138 #define uninitialized_var(x) x = x 139 140 #define likely(x) __builtin_expect(!!(x), 1) 141 #define unlikely(x) __builtin_expect(!!(x), 0) 142 143 #endif 144