/* vi: set sw=4 ts=4: */
/*
- Copyright 2006, Bernhard Fischer
+ Copyright 2006, Bernhard Reutner-Fischer
Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
#endif
/* __restrict is known in EGCS 1.2 and above. */
-#if !__GNUC_PREREQ (2,92)
+#if !__GNUC_PREREQ(2,92)
# ifndef __restrict
# define __restrict /* Ignore */
# endif
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)
+#if !__GNUC_PREREQ(2,7)
# ifndef __attribute__
# define __attribute__(x)
# endif
#if defined(__STDC_VERSION__) && __STDC_VERSION__ > 199901L
/* it's a keyword */
#else
-# if __GNUC_PREREQ (2,7)
+# if __GNUC_PREREQ(2,7)
# define inline __inline__
# else
# define inline
# 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 ALWAYS_INLINE __attribute__ ((always_inline)) inline
-# if !ENABLE_WERROR
-# define ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
-# else
-# define ATTRIBUTE_DEPRECATED /* n/a */
-# endif
+#define UNUSED_PARAM __attribute__ ((__unused__))
+#define NORETURN __attribute__ ((__noreturn__))
+#define PACKED __attribute__ ((__packed__))
+#define ALIGNED(m) __attribute__ ((__aligned__(m)))
+/* __NO_INLINE__: some gcc's do not honor inlining! :( */
+#if __GNUC_PREREQ(3,0) && !defined(__NO_INLINE__)
+# define ALWAYS_INLINE __attribute__ ((always_inline)) inline
+/* I've seen a toolchain where I needed __noinline__ instead of noinline */
+# define NOINLINE __attribute__((__noinline__))
+# if !ENABLE_WERROR
+# define DEPRECATED __attribute__ ((__deprecated__))
+# define UNUSED_PARAM_RESULT __attribute__ ((warn_unused_result))
# else
-# define ALWAYS_INLINE inline
-# define ATTRIBUTE_DEPRECATED /* n/a */
+# define DEPRECATED /* n/a */
+# define UNUSED_PARAM_RESULT /* n/a */
# endif
+#else
+# define ALWAYS_INLINE inline /* n/a */
+# define NOINLINE /* n/a */
+# define DEPRECATED /* n/a */
+# define UNUSED_PARAM_RESULT /* n/a */
+#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 */
+#if __GNUC_PREREQ(4,1)
+# define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
+//__attribute__ ((__externally_visible__))
+#else
+# define EXTERNALLY_VISIBLE
+#endif
/* 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)
+#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)
+#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
+/* FAST_FUNC is a qualifier which (possibly) makes function call faster
+ * and/or smaller by using modified ABI. It is usually only needed
+ * on non-static, busybox internal functions. Recent versions of gcc
+ * optimize statics automatically. FAST_FUNC on static is required
+ * only if you need to match a function pointer's type */
+#if __GNUC_PREREQ(3,0) && defined(i386) /* || defined(__x86_64__)? */
+/* stdcall makes callee to pop arguments from stack, not caller */
+# define FAST_FUNC __attribute__((regparm(3),stdcall))
+/* #elif ... - add your favorite arch today! */
+#else
+# define FAST_FUNC
+#endif
+
/* ---- Endian Detection ------------------------------------ */
#if (defined __digital__ && defined __unix__)
# define BB_LITTLE_ENDIAN 1
#endif
+/* SWAP_LEnn means "convert CPU<->little_endian by swapping bytes" */
#if BB_BIG_ENDIAN
#define SWAP_BE16(x) (x)
#define SWAP_BE32(x) (x)
#define SWAP_LE64(x) (x)
#endif
+/* ---- Unaligned access ------------------------------------ */
+
+/* NB: unaligned parameter should be a pointer, aligned one -
+ * a lvalue. This makes it more likely to not swap them by mistake
+ */
+#if defined(i386) || defined(__x86_64__)
+#define move_from_unaligned16(v, u16p) ((v) = *(uint16_t*)(u16p))
+#define move_from_unaligned32(v, u32p) ((v) = *(uint32_t*)(u32p))
+#define move_to_unaligned32(u32p, v) (*(uint32_t*)(u32p) = (v))
+/* #elif ... - add your favorite arch today! */
+#else
+/* performs reasonably well (gcc usually inlines memcpy here) */
+#define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
+#define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
+#define move_to_unaligned32(u32p, v) (memcpy((u32p), &(v), 4))
+#endif
+
/* ---- Networking ------------------------------------------ */
+
#ifndef __APPLE__
# include <arpa/inet.h>
+# ifndef __socklen_t_defined
+typedef int socklen_t;
+# endif
#else
# include <netinet/in.h>
#endif
-#ifndef __socklen_t_defined
-typedef int socklen_t;
-#endif
-
/* ---- Compiler dependent settings ------------------------- */
-#if (defined __digital__ && defined __unix__)
+
+#if (defined __digital__ && defined __unix__) || defined __APPLE__
# undef HAVE_MNTENT_H
+# undef HAVE_SYS_STATFS_H
#else
# define HAVE_MNTENT_H 1
+# define HAVE_SYS_STATFS_H 1
#endif /* ___digital__ && __unix__ */
/* linux/loop.h relies on __u64. Make sure we have that as a proper type
* until userspace is widely fixed. */
-#ifndef __GNUC__
-#if defined __INTEL_COMPILER
-__extension__ typedef __signed__ long long __s64;
+#if (defined __INTEL_COMPILER && !defined __GNUC__) || \
+ (defined __GNUC__ && defined __STRICT_ANSI__)
+__extension__ typedef long long __s64;
__extension__ typedef unsigned long long __u64;
-#endif /* __INTEL_COMPILER */
-#endif /* ifndef __GNUC__ */
+#endif
/*----- Kernel versioning ------------------------------------*/
+
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
-/* ---- miscellaneous --------------------------------------- */
+/* ---- Miscellaneous --------------------------------------- */
#if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ < 5 && \
!defined(__dietlibc__) && \
# error "Sorry, this libc version is not supported :("
#endif
-// Don't perpetuate e2fsck crap into the headers. Clean up e2fsck instead.
+/* Don't perpetuate e2fsck crap into the headers. Clean up e2fsck instead. */
#if defined __GLIBC__ || defined __UCLIBC__ \
|| defined __dietlibc__ || defined _NEWLIB_VERSION
#define HAVE_FEATURES_H
#include <stdint.h>
#define HAVE_STDINT_H
-#else
+#elif !defined __APPLE__
/* Largest integral types. */
#if __BIG_ENDIAN__
typedef long intmax_t;
#include <stdbool.h>
#endif
+/* Try to defeat gcc's alignment of "char message[]"-like data */
+#if 1 /* if needed: !defined(arch1) && !defined(arch2) */
+#define ALIGN1 __attribute__((aligned(1)))
+#define ALIGN2 __attribute__((aligned(2)))
+#else
+/* Arches which MUST have 2 or 4 byte alignment for everything are here */
+#define ALIGN1
+#define ALIGN2
+#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.
+ * for a mmu-less system.
*/
-#if defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
- __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__
+#if ENABLE_NOMMU || \
+ (defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
+ __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__)
#define BB_MMU 0
-#define BB_NOMMU 1
#define USE_FOR_NOMMU(...) __VA_ARGS__
#define USE_FOR_MMU(...)
#else
#define BB_MMU 1
-/* BB_NOMMU is not defined in this case! */
#define USE_FOR_NOMMU(...)
#define USE_FOR_MMU(...) __VA_ARGS__
#endif
# 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"
+# include <standards.h>
+# define HAVE_STANDARDS_H
+# include <inttypes.h>
+# define HAVE_INTTYPES_H
+# define PRIu32 "u"
/* use legacy setpgrp(pid_t,pid_t) for now. move to platform.c */
-#define bb_setpgrp() do { pid_t __me = getpid(); setpgrp(__me,__me); } while (0)
+# 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
+# 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 /* !__digital__ */
+
+# define bb_setpgrp() setpgrp()
-#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.
+/* Make sure we have all the new mount flags we actually try to use. */
#ifndef MS_BIND
#define MS_BIND (1<<12)
#endif
#define MS_SILENT (1<<15)
#endif
-// The shared subtree stuff, which went in around 2.6.15
+/* The shared subtree stuff, which went in around 2.6.15. */
#ifndef MS_UNBINDABLE
#define MS_UNBINDABLE (1<<17)
#endif
#ifndef MS_SHARED
#define MS_SHARED (1<<20)
#endif
-
+#ifndef MS_RELATIME
+#define MS_RELATIME (1 << 21)
+#endif
#if !defined(BLKSSZGET)
#define BLKSSZGET _IO(0x12, 104)
projects / oweals / busybox.git / blobdiff