*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
-#ifndef BB_PLATFORM_H
+#ifndef BB_PLATFORM_H
#define BB_PLATFORM_H 1
-/* Assume all these functions exist by default. Platforms where it is not
- * true will #undef them below.
- */
-#define HAVE_FDPRINTF 1
-#define HAVE_MEMRCHR 1
-#define HAVE_MKDTEMP 1
-#define HAVE_SETBIT 1
-#define HAVE_STRCASESTR 1
-#define HAVE_STRCHRNUL 1
-#define HAVE_STRSEP 1
-#define HAVE_STRSIGNAL 1
-#define HAVE_VASPRINTF 1
/* Convenience macros to test the version of gcc. */
#undef __GNUC_PREREQ
# 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
/* -fwhole-program makes all symbols local. The attribute externally_visible
- forces a symbol global. */
+ * forces a symbol global. */
#if __GNUC_PREREQ(4,1)
# define EXTERNALLY_VISIBLE __attribute__(( visibility("default") ))
//__attribute__ ((__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. */
+ * 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
-
/* 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
/* Make all declarations hidden (-fvisibility flag only affects definitions) */
/* (don't include system headers after this until corresponding pop!) */
-#if __GNUC_PREREQ(4,1)
+#if __GNUC_PREREQ(4,1) && !defined(__CYGWIN__)
# define PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN _Pragma("GCC visibility push(hidden)")
# define POP_SAVED_FUNCTION_VISIBILITY _Pragma("GCC visibility pop")
#else
# define POP_SAVED_FUNCTION_VISIBILITY
#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 ------------------------------------ */
#include <limits.h>
# include <sex.h>
#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) \
|| defined(__APPLE__)
-# include <sys/resource.h> /* rlimit */
+# include <sys/resource.h> /* rlimit */
# include <machine/endian.h>
# define bswap_64 __bswap64
# define bswap_32 __bswap32
# define IF_LITTLE_ENDIAN(...) __VA_ARGS__
#endif
+
/* ---- Unaligned access ------------------------------------ */
+#include <stdint.h>
+typedef int bb__aliased_int FIX_ALIASING;
+typedef long bb__aliased_long FIX_ALIASING;
+typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
+typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
+typedef uint64_t bb__aliased_uint64_t FIX_ALIASING;
+
/* 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__) || defined(__powerpc__)
-# include <stdint.h>
-typedef int bb__aliased_int FIX_ALIASING;
-typedef uint16_t bb__aliased_uint16_t FIX_ALIASING;
-typedef uint32_t bb__aliased_uint32_t FIX_ALIASING;
-# define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
+# define move_from_unaligned_int(v, intp) ((v) = *(bb__aliased_int*)(intp))
+# define move_from_unaligned_long(v, longp) ((v) = *(bb__aliased_long*)(longp))
# define move_from_unaligned16(v, u16p) ((v) = *(bb__aliased_uint16_t*)(u16p))
# define move_from_unaligned32(v, u32p) ((v) = *(bb__aliased_uint32_t*)(u32p))
# define move_to_unaligned16(u16p, v) (*(bb__aliased_uint16_t*)(u16p) = (v))
#else
/* performs reasonably well (gcc usually inlines memcpy here) */
# define move_from_unaligned_int(v, intp) (memcpy(&(v), (intp), sizeof(int)))
+# define move_from_unaligned_long(v, longp) (memcpy(&(v), (longp), sizeof(long)))
# define move_from_unaligned16(v, u16p) (memcpy(&(v), (u16p), 2))
# define move_from_unaligned32(v, u32p) (memcpy(&(v), (u32p), 4))
# define move_to_unaligned16(u16p, v) do { \
uint16_t __t = (v); \
- memcpy((u16p), &__t, 4); \
+ memcpy((u16p), &__t, 2); \
} while (0)
# define move_to_unaligned32(u32p, v) do { \
uint32_t __t = (v); \
} while (0)
#endif
-/* ---- Compiler dependent settings ------------------------- */
-
-#if (defined __digital__ && defined __unix__) \
- || defined __APPLE__ \
- || defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__
-# undef HAVE_MNTENT_H
-# undef HAVE_SYS_STATFS_H
-#else
-# define HAVE_MNTENT_H 1
-# define HAVE_SYS_STATFS_H 1
-#endif
-
-/*----- Kernel versioning ------------------------------------*/
-
-#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
-
-/* ---- Miscellaneous --------------------------------------- */
-#if defined __GLIBC__ || defined __UCLIBC__ \
- || defined __dietlibc__ || defined _NEWLIB_VERSION
-# include <features.h>
-#endif
+/* ---- Size-saving "small" ints (arch-dependent) ----------- */
-/* Size-saving "small" ints (arch-dependent) */
#if defined(i386) || defined(__x86_64__) || defined(__mips__) || defined(__cris__)
/* add other arches which benefit from this... */
typedef signed char smallint;
# include <stdbool.h>
#endif
-/* Try to defeat gcc's alignment of "char message[]"-like data */
-#if 1 /* if needed: !defined(arch1) && !defined(arch2) */
+
+/*----- Kernel versioning ------------------------------------*/
+
+#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
+
+#ifdef __UCLIBC__
+# define UCLIBC_VERSION KERNEL_VERSION(__UCLIBC_MAJOR__, __UCLIBC_MINOR__, __UCLIBC_SUBLEVEL__)
+#else
+# define UCLIBC_VERSION 0
+#endif
+
+
+/* ---- Miscellaneous --------------------------------------- */
+
+#if defined __GLIBC__ \
+ || defined __UCLIBC__ \
+ || defined __dietlibc__ \
+ || defined __BIONIC__ \
+ || defined _NEWLIB_VERSION
+# include <features.h>
+#endif
+
+/* Define bb_setpgrp */
+#if defined(__digital__) && defined(__unix__)
+/* 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)
+#else
+# define bb_setpgrp() setpgrp()
+#endif
+
+/* fdprintf is more readable, we used it before dprintf was standardized */
+#include <unistd.h>
+#define fdprintf dprintf
+
+/* Useful for defeating gcc's alignment of "char message[]"-like data */
+#if !defined(__s390__)
+ /* on s390[x], non-word-aligned data accesses require larger code */
# define ALIGN1 __attribute__((aligned(1)))
# define ALIGN2 __attribute__((aligned(2)))
# define ALIGN4 __attribute__((aligned(4)))
# define ALIGN4
#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.
*/
#if ENABLE_NOMMU || \
- (defined __UCLIBC__ && __UCLIBC_MAJOR__ >= 0 && __UCLIBC_MINOR__ >= 9 && \
- __UCLIBC_SUBLEVEL__ > 28 && !defined __ARCH_USE_MMU__)
+ (defined __UCLIBC__ && \
+ UCLIBC_VERSION > KERNEL_VERSION(0, 9, 28) && \
+ !defined __ARCH_USE_MMU__)
# define BB_MMU 0
# define USE_FOR_NOMMU(...) __VA_ARGS__
# define USE_FOR_MMU(...)
# define USE_FOR_MMU(...) __VA_ARGS__
#endif
-/* Don't use lchown with glibc older than 2.1.x */
-#if defined(__GLIBC__) && __GLIBC__ <= 2 && __GLIBC_MINOR__ < 1
-# define lchown chown
-#endif
-
#if defined(__digital__) && defined(__unix__)
-
# include <standards.h>
# include <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)
# if !defined ADJ_OFFSET_SINGLESHOT && defined MOD_CLKA && defined MOD_OFFSET
# define ADJ_OFFSET_SINGLESHOT (MOD_CLKA | MOD_OFFSET)
# endif
# if !defined ADJ_TICK && defined MOD_CLKB
# define ADJ_TICK MOD_CLKB
# endif
+#endif
-#else
-
-# define bb_setpgrp() setpgrp()
+#if defined(__CYGWIN__)
+# define MAXSYMLINKS SYMLOOP_MAX
+#endif
+#if defined(ANDROID) || defined(__ANDROID__)
+# define BB_ADDITIONAL_PATH ":/system/sbin:/system/bin:/system/xbin"
+# define SYS_ioprio_set __NR_ioprio_set
+# define SYS_ioprio_get __NR_ioprio_get
#endif
-#if defined(__GLIBC__)
-# define fdprintf dprintf
+
+/* ---- Who misses what? ------------------------------------ */
+
+/* Assume all these functions and header files exist by default.
+ * Platforms where it is not true will #undef them below.
+ */
+#define HAVE_CLEARENV 1
+#define HAVE_FDATASYNC 1
+#define HAVE_DPRINTF 1
+#define HAVE_MEMRCHR 1
+#define HAVE_MKDTEMP 1
+#define HAVE_PTSNAME_R 1
+#define HAVE_SETBIT 1
+#define HAVE_SIGHANDLER_T 1
+#define HAVE_STPCPY 1
+#define HAVE_STRCASESTR 1
+#define HAVE_STRCHRNUL 1
+#define HAVE_STRSEP 1
+#define HAVE_STRSIGNAL 1
+#define HAVE_STRVERSCMP 1
+#define HAVE_VASPRINTF 1
+#define HAVE_UNLOCKED_STDIO 1
+#define HAVE_UNLOCKED_LINE_OPS 1
+#define HAVE_GETLINE 1
+#define HAVE_XTABS 1
+#define HAVE_MNTENT_H 1
+#define HAVE_NET_ETHERNET_H 1
+#define HAVE_SYS_STATFS_H 1
+
+#if defined(__UCLIBC__) && UCLIBC_VERSION < KERNEL_VERSION(0, 9, 32)
+# undef HAVE_STRVERSCMP
#endif
#if defined(__dietlibc__)
#endif
#if defined(__WATCOMC__)
-# undef HAVE_FDPRINTF
+# undef HAVE_DPRINTF
+# undef HAVE_GETLINE
# undef HAVE_MEMRCHR
# undef HAVE_MKDTEMP
# undef HAVE_SETBIT
+# undef HAVE_STPCPY
# undef HAVE_STRCASESTR
# undef HAVE_STRCHRNUL
# undef HAVE_STRSEP
# undef HAVE_STRSIGNAL
+# undef HAVE_STRVERSCMP
# undef HAVE_VASPRINTF
+# undef HAVE_UNLOCKED_STDIO
+# undef HAVE_UNLOCKED_LINE_OPS
+# undef HAVE_NET_ETHERNET_H
+#endif
+
+#if defined(__CYGWIN__)
+# undef HAVE_CLEARENV
+# undef HAVE_FDPRINTF
+# undef HAVE_MEMRCHR
+# undef HAVE_PTSNAME_R
+# undef HAVE_STRVERSCMP
+# undef HAVE_UNLOCKED_LINE_OPS
+#endif
+
+/* These BSD-derived OSes share many similarities */
+#if (defined __digital__ && defined __unix__) \
+ || defined __APPLE__ \
+ || defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__
+# undef HAVE_CLEARENV
+# undef HAVE_FDATASYNC
+# undef HAVE_GETLINE
+# undef HAVE_MNTENT_H
+# undef HAVE_PTSNAME_R
+# undef HAVE_SYS_STATFS_H
+# undef HAVE_SIGHANDLER_T
+# undef HAVE_STRVERSCMP
+# undef HAVE_XTABS
+# undef HAVE_DPRINTF
+# undef HAVE_UNLOCKED_STDIO
+# undef HAVE_UNLOCKED_LINE_OPS
#endif
-#if defined(__FreeBSD__)
+#if defined(__FreeBSD__) || defined(__APPLE__)
# undef HAVE_STRCHRNUL
#endif
+#if defined(__NetBSD__)
+# define HAVE_GETLINE 1 /* Recent NetBSD versions have getline() */
+#endif
+
+#if defined(__digital__) && defined(__unix__)
+# undef HAVE_STPCPY
+#endif
+
+#if defined(ANDROID) || defined(__ANDROID__)
+# undef HAVE_DPRINTF
+# undef HAVE_GETLINE
+# undef HAVE_STPCPY
+# undef HAVE_STRCHRNUL
+# undef HAVE_STRVERSCMP
+# undef HAVE_UNLOCKED_LINE_OPS
+# undef HAVE_NET_ETHERNET_H
+#endif
+
/*
* Now, define prototypes for all the functions defined in platform.c
* These must come after all the HAVE_* macros are defined (or not)
*/
-#ifndef HAVE_FDPRINTF
-extern int fdprintf(int fd, const char *format, ...);
+#ifndef HAVE_DPRINTF
+extern int dprintf(int fd, const char *format, ...);
#endif
#ifndef HAVE_MEMRCHR
# define clrbit(a, b) ((a)[(b) >> 3] &= ~(1 << ((b) & 7)))
#endif
+#ifndef HAVE_SIGHANDLER_T
+typedef void (*sighandler_t)(int);
+#endif
+
+#ifndef HAVE_STPCPY
+extern char *stpcpy(char *p, const char *to_add) FAST_FUNC;
+#endif
+
#ifndef HAVE_STRCASESTR
extern char *strcasestr(const char *s, const char *pattern) FAST_FUNC;
#endif
extern int vasprintf(char **string_ptr, const char *format, va_list p) FAST_FUNC;
#endif
+#ifndef HAVE_GETLINE
+# include <stdio.h> /* for FILE */
+# include <sys/types.h> /* size_t */
+extern ssize_t getline(char **lineptr, size_t *n, FILE *stream) FAST_FUNC;
+#endif
+
#endif
projects / platform / upstream / busybox.git / blobdiff