blob: 332618e9de9c04282433030c87b1b2272556ccb5 [file] [log] [blame]
Mike Frysinger37566092009-07-02 19:23:25 -04001/*
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
28extern 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>
51typedef unsigned long ulong;
52typedef unsigned int uint;
53#endif
54
55typedef uint8_t __u8;
56typedef uint16_t __u16;
57typedef 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
118typedef unsigned long int uintptr_t;
119#else
120typedef unsigned int uintptr_t;
121#endif
122
123#endif
124
Anton Vorontsovd8bc55a2009-09-01 20:58:03 +0400125/* compiler options */
126#define uninitialized_var(x) x = x
127
Matthias Kaehlckeb63815e2009-12-22 23:05:45 +0100128#define likely(x) __builtin_expect(!!(x), 1)
129#define unlikely(x) __builtin_expect(!!(x), 0)
130
Mike Frysinger37566092009-07-02 19:23:25 -0400131#endif