source: MondoRescue/branches/stable/mindi-busybox/include/platform.h @ 821

Last change on this file since 821 was 821, checked in by Bruno Cornec, 14 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)

File size: 6.1 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3   Copyright 2006, Bernhard Fischer
4
5   Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
6*/
7#ifndef __PLATFORM_H
8#define __PLATFORM_H    1
9
10/* Convenience macros to test the version of gcc. */
11#undef __GNUC_PREREQ
12#if defined __GNUC__ && defined __GNUC_MINOR__
13# define __GNUC_PREREQ(maj, min) \
14            ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
15#else
16# define __GNUC_PREREQ(maj, min) 0
17#endif
18
19/* __restrict is known in EGCS 1.2 and above. */
20#if !__GNUC_PREREQ (2,92)
21# ifndef __restrict
22#  define __restrict     /* Ignore */
23# endif
24#endif
25
26/* Define macros for some gcc attributes.  This permits us to use the
27   macros freely, and know that they will come into play for the
28   version of gcc in which they are supported.  */
29
30#if !__GNUC_PREREQ (2,7)
31# ifndef __attribute__
32#  define __attribute__(x)
33# endif
34#endif
35
36#undef inline
37#if __STDC_VERSION__ > 199901L
38/* it's a keyword */
39#else
40# if __GNUC_PREREQ (2,7)
41#  define inline __inline__
42# else
43#  define inline
44# endif
45#endif
46
47#ifndef __const
48# define __const const
49#endif
50
51# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
52# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
53# define ATTRIBUTE_PACKED __attribute__ ((__packed__))
54# define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))
55# if __GNUC_PREREQ (3,0)
56#  define ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) inline
57# else
58#  define ATTRIBUTE_ALWAYS_INLINE inline
59# endif
60
61/* -fwhole-program makes all symbols local. The attribute externally_visible
62   forces a symbol global.  */
63# if __GNUC_PREREQ (4,1)
64#  define ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((__externally_visible__))
65# else
66#  define ATTRIBUTE_EXTERNALLY_VISIBLE
67# endif /* GNUC >= 4.1 */
68
69/* We use __extension__ in some places to suppress -pedantic warnings
70   about GCC extensions.  This feature didn't work properly before
71   gcc 2.8.  */
72#if !__GNUC_PREREQ (2,8)
73# ifndef __extension__
74#  define __extension__
75# endif
76#endif
77
78/* ---- Endian Detection ------------------------------------ */
79
80#if (defined __digital__ && defined __unix__)
81# include <sex.h>
82# define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN)
83# define __BYTE_ORDER BYTE_ORDER
84#elif !defined __APPLE__
85# include <byteswap.h>
86# include <endian.h>
87#endif
88
89#ifdef __BIG_ENDIAN__
90# define BB_BIG_ENDIAN 1
91# define BB_LITTLE_ENDIAN 0
92#elif __BYTE_ORDER == __BIG_ENDIAN
93# define BB_BIG_ENDIAN 1
94# define BB_LITTLE_ENDIAN 0
95#else
96# define BB_BIG_ENDIAN 0
97# define BB_LITTLE_ENDIAN 1
98#endif
99
100#if BB_BIG_ENDIAN
101#define SWAP_BE16(x) (x)
102#define SWAP_BE32(x) (x)
103#define SWAP_BE64(x) (x)
104#define SWAP_LE16(x) bswap_16(x)
105#define SWAP_LE32(x) bswap_32(x)
106#define SWAP_LE64(x) bswap_64(x)
107#else
108#define SWAP_BE16(x) bswap_16(x)
109#define SWAP_BE32(x) bswap_32(x)
110#define SWAP_BE64(x) bswap_64(x)
111#define SWAP_LE16(x) (x)
112#define SWAP_LE32(x) (x)
113#define SWAP_LE64(x) (x)
114#endif
115
116/* ---- Networking ------------------------------------------ */
117#ifndef __APPLE__
118# include <arpa/inet.h>
119#else
120# include <netinet/in.h>
121#endif
122
123#ifndef __socklen_t_defined
124typedef int socklen_t;
125#endif
126
127/* ---- Compiler dependent settings ------------------------- */
128#ifndef __GNUC__
129#if defined __INTEL_COMPILER
130__extension__ typedef __signed__ long long __s64;
131__extension__ typedef unsigned long long __u64;
132#endif /* __INTEL_COMPILER */
133#endif /* ifndef __GNUC__ */
134
135#if (defined __digital__ && defined __unix__)
136# undef HAVE_MNTENT_H
137#else
138# define HAVE_MNTENT_H 1
139#endif /* ___digital__ && __unix__ */
140
141/*----- Kernel versioning ------------------------------------*/
142#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
143
144/* ---- miscellaneous --------------------------------------- */
145
146#if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \
147    !defined(__dietlibc__) && \
148    !defined(_NEWLIB_VERSION) && \
149    !(defined __digital__ && defined __unix__)
150# error "Sorry, this libc version is not supported :("
151#endif
152
153// Don't perpetuate e2fsck crap into the headers.  Clean up e2fsck instead.
154
155#if defined __GLIBC__ || defined __UCLIBC__ \
156    || defined __dietlibc__ || defined _NEWLIB_VERSION
157#include <features.h>
158#define HAVE_FEATURES_H
159#include <stdint.h>
160#define HAVE_STDINT_H
161#else
162/* Largest integral types.  */
163#if __BIG_ENDIAN__
164typedef long int                intmax_t;
165typedef unsigned long int       uintmax_t;
166#else
167__extension__
168typedef long long int           intmax_t;
169__extension__
170typedef unsigned long long int  uintmax_t;
171#endif
172#endif
173
174/* uclibc does not implement daemon for no-mmu systems.
175 * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
176 * For earlier versions there is no reliable way to check if we are building
177 * for a mmu-less system; the user should pass EXTRA_CFLAGS="-DBB_NOMMU"
178 * on his own.
179 */
180#if defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
181    __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__
182#define BB_NOMMU
183#endif
184
185/* Platforms that haven't got dprintf need to implement fdprintf() in
186 * libbb.  This would require a platform.c.  It's not going to be cleaned
187 * out of the tree, so stop saying it should be. */
188#define fdprintf dprintf
189
190/* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */
191/* FIXME: fix tar.c! */
192#ifndef FNM_LEADING_DIR
193#define FNM_LEADING_DIR 0
194#endif
195
196#if (defined __digital__ && defined __unix__)
197#include <standards.h>
198#define HAVE_STANDARDS_H
199#include <inttypes.h>
200#define HAVE_INTTYPES_H
201#define PRIu32 "u"
202
203/* use legacy setpgrp(pidt_,pid_t) for now.  move to platform.c */
204#define bb_setpgrp do{pid_t __me = getpid();setpgrp(__me,__me);}while(0)
205
206#if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
207#define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
208#endif
209#if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
210#define ADJ_FREQUENCY MOD_FREQUENCY
211#endif
212#if !defined ADJ_TIMECONST && defined MOD_TIMECONST
213#define ADJ_TIMECONST MOD_TIMECONST
214#endif
215#if !defined ADJ_TICK && defined MOD_CLKB
216#define ADJ_TICK MOD_CLKB
217#endif
218
219#else
220#define bb_setpgrp setpgrp()
221#endif
222
223#if defined(__linux__)
224#include <sys/mount.h>
225#if !defined(BLKSSZGET)
226#define BLKSSZGET _IO(0x12, 104)
227#endif
228#if !defined(BLKGETSIZE64)
229#define BLKGETSIZE64 _IOR(0x12,114,size_t)
230#endif
231#endif
232
233#endif  /* platform.h   */
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