1 files changed, 276 insertions, 0 deletions

diff --git a/include/platform.h b/include/platform.h
new file mode 100644
index 000000000..345e9cb7a
--- /dev/null
+++ b/include/platform.h
@@ -0,0 +1,276 @@
+/* vi: set sw=4 ts=4: */
+/*
+   Copyright 2006, Bernhard Fischer
+
+   Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+*/
+#ifndef __PLATFORM_H
+#define __PLATFORM_H    1
+
+/* Convenience macros to test the version of gcc. */
+#undef __GNUC_PREREQ
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define __GNUC_PREREQ(maj, min) \
+                ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
+#else
+# define __GNUC_PREREQ(maj, min) 0
+#endif
+
+/* __restrict is known in EGCS 1.2 and above. */
+#if !__GNUC_PREREQ (2,92)
+# ifndef __restrict
+#  define __restrict     /* Ignore */
+# endif
+#endif
+
+/* Define macros for some gcc attributes.  This permits us to use the
+   macros freely, and know that they will come into play for the
+   version of gcc in which they are supported.  */
+
+#if !__GNUC_PREREQ (2,7)
+# ifndef __attribute__
+#  define __attribute__(x)
+# endif
+#endif
+
+#undef inline
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
+/* it's a keyword */
+#else
+# if __GNUC_PREREQ (2,7)
+#  define inline __inline__
+# else
+#  define inline
+# endif
+#endif
+
+#ifndef __const
+# define __const const
+#endif
+
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
+# define ATTRIBUTE_PACKED __attribute__ ((__packed__))
+# define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m)))
+# if __GNUC_PREREQ (3,0)
+#  define ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline)) inline
+# else
+#  define ATTRIBUTE_ALWAYS_INLINE inline
+# endif
+
+/* -fwhole-program makes all symbols local. The attribute externally_visible
+   forces a symbol global.  */
+# if __GNUC_PREREQ (4,1)
+#  define ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((__externally_visible__))
+# else
+#  define ATTRIBUTE_EXTERNALLY_VISIBLE
+# endif /* GNUC >= 4.1 */
+
+/* We use __extension__ in some places to suppress -pedantic warnings
+   about GCC extensions.  This feature didn't work properly before
+   gcc 2.8.  */
+#if !__GNUC_PREREQ (2,8)
+# ifndef __extension__
+#  define __extension__
+# endif
+#endif
+
+/* gcc-2.95 had no va_copy but only __va_copy. */
+#if !__GNUC_PREREQ (3,0)
+# include <stdarg.h>
+# if !defined va_copy && defined __va_copy
+#  define va_copy(d,s) __va_copy((d),(s))
+# endif
+#endif
+
+/* ---- Endian Detection ------------------------------------ */
+
+#if (defined __digital__ && defined __unix__)
+# include <sex.h>
+# define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN)
+# define __BYTE_ORDER BYTE_ORDER
+#elif !defined __APPLE__
+# include <byteswap.h>
+# include <endian.h>
+#endif
+
+#ifdef __BIG_ENDIAN__
+# define BB_BIG_ENDIAN 1
+# define BB_LITTLE_ENDIAN 0
+#elif __BYTE_ORDER == __BIG_ENDIAN
+# define BB_BIG_ENDIAN 1
+# define BB_LITTLE_ENDIAN 0
+#else
+# define BB_BIG_ENDIAN 0
+# define BB_LITTLE_ENDIAN 1
+#endif
+
+#if BB_BIG_ENDIAN
+#define SWAP_BE16(x) (x)
+#define SWAP_BE32(x) (x)
+#define SWAP_BE64(x) (x)
+#define SWAP_LE16(x) bswap_16(x)
+#define SWAP_LE32(x) bswap_32(x)
+#define SWAP_LE64(x) bswap_64(x)
+#else
+#define SWAP_BE16(x) bswap_16(x)
+#define SWAP_BE32(x) bswap_32(x)
+#define SWAP_BE64(x) bswap_64(x)
+#define SWAP_LE16(x) (x)
+#define SWAP_LE32(x) (x)
+#define SWAP_LE64(x) (x)
+#endif
+
+/* ---- Networking ------------------------------------------ */
+#ifndef __APPLE__
+# include <arpa/inet.h>
+#else
+# include <netinet/in.h>
+#endif
+
+#ifndef __socklen_t_defined
+typedef int socklen_t;
+#endif
+
+/* ---- Compiler dependent settings ------------------------- */
+#ifndef __GNUC__
+#if defined __INTEL_COMPILER
+__extension__ typedef __signed__ long long __s64;
+__extension__ typedef unsigned long long __u64;
+#endif /* __INTEL_COMPILER */
+#endif /* ifndef __GNUC__ */
+
+#if (defined __digital__ && defined __unix__)
+# undef HAVE_MNTENT_H
+#else
+# define HAVE_MNTENT_H 1
+#endif /* ___digital__ && __unix__ */
+
+/*----- Kernel versioning ------------------------------------*/
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+
+/* ---- miscellaneous --------------------------------------- */
+
+#if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \
+        !defined(__dietlibc__) && \
+        !defined(_NEWLIB_VERSION) && \
+        !(defined __digital__ && defined __unix__)
+# error "Sorry, this libc version is not supported :("
+#endif
+
+// Don't perpetuate e2fsck crap into the headers.  Clean up e2fsck instead.
+
+#if defined __GLIBC__ || defined __UCLIBC__ \
+        || defined __dietlibc__ || defined _NEWLIB_VERSION
+#include <features.h>
+#define HAVE_FEATURES_H
+#include <stdint.h>
+#define HAVE_STDINT_H
+#else
+/* Largest integral types.  */
+#if __BIG_ENDIAN__
+typedef long int                intmax_t;
+typedef unsigned long int       uintmax_t;
+#else
+__extension__
+typedef long long int           intmax_t;
+__extension__
+typedef unsigned long long int  uintmax_t;
+#endif
+#endif
+
+/* uclibc does not implement daemon() for no-mmu systems.
+ * For 0.9.29 and svn, __ARCH_USE_MMU__ indicates no-mmu reliably.
+ * For earlier versions there is no reliable way to check if we are building
+ * for a mmu-less system; the user should pass EXTRA_CFLAGS="-DBB_NOMMU"
+ * on his own.
+ */
+#if defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
+    __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__
+#define BB_NOMMU
+#endif
+
+/* Platforms that haven't got dprintf need to implement fdprintf() in
+ * libbb.  This would require a platform.c.  It's not going to be cleaned
+ * out of the tree, so stop saying it should be. */
+#define fdprintf dprintf
+
+/* Don't use lchown with glibc older then 2.1.x ... uC-libc lacks it */
+#if (defined __GLIBC__ && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1) || \
+    defined __UC_LIBC__
+# define lchown chown
+#endif
+
+/* THIS SHOULD BE CLEANED OUT OF THE TREE ENTIRELY */
+/* FIXME: fix tar.c! */
+#ifndef FNM_LEADING_DIR
+#define FNM_LEADING_DIR 0
+#endif
+
+#if (defined __digital__ && defined __unix__)
+#include <standards.h>
+#define HAVE_STANDARDS_H
+#include <inttypes.h>
+#define HAVE_INTTYPES_H
+#define PRIu32 "u"
+
+/* use legacy setpgrp(pidt_,pid_t) for now.  move to platform.c */
+#define bb_setpgrp do{pid_t __me = getpid();setpgrp(__me,__me);}while(0)
+
+#if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
+#define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
+#endif
+#if !defined ADJ_FREQUENCY && defined MOD_FREQUENCY
+#define ADJ_FREQUENCY MOD_FREQUENCY
+#endif
+#if !defined ADJ_TIMECONST && defined MOD_TIMECONST
+#define ADJ_TIMECONST MOD_TIMECONST
+#endif
+#if !defined ADJ_TICK && defined MOD_CLKB
+#define ADJ_TICK MOD_CLKB
+#endif
+
+#else
+#define bb_setpgrp setpgrp()
+#endif
+
+#if defined(__linux__)
+#include <sys/mount.h>
+// Make sure we have all the new mount flags we actually try to use.
+#ifndef MS_BIND
+#define MS_BIND        (1<<12)
+#endif
+#ifndef MS_MOVE
+#define MS_MOVE        (1<<13)
+#endif
+#ifndef MS_RECURSIVE
+#define MS_RECURSIVE   (1<<14)
+#endif
+#ifndef MS_SILENT
+#define MS_SILENT      (1<<15)
+#endif
+
+// The shared subtree stuff, which went in around 2.6.15
+#ifndef MS_UNBINDABLE
+#define MS_UNBINDABLE  (1<<17)
+#endif
+#ifndef MS_PRIVATE
+#define MS_PRIVATE     (1<<18)
+#endif
+#ifndef MS_SLAVE
+#define MS_SLAVE       (1<<19)
+#endif
+#ifndef MS_SHARED
+#define MS_SHARED      (1<<20)
+#endif
+
+
+#if !defined(BLKSSZGET)
+#define BLKSSZGET _IO(0x12, 104)
+#endif
+#if !defined(BLKGETSIZE64)
+#define BLKGETSIZE64 _IOR(0x12,114,size_t)
+#endif
+#endif
+
+#endif  /* platform.h   */