X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;ds=sidebyside;f=include%2Fplatform.h;h=91d5f476d8693ece34652f71f40da1e395a971c6;hb=5568b722d46157867959685ee2b35649c6ab16df;hp=a8858a74c619f3006d649cd9160fabc994b2e90b;hpb=552b56dfd188d32a14a48ff1d81ee6ca05fc9834;p=oweals%2Fbusybox.git diff --git a/include/platform.h b/include/platform.h index a8858a74c..91d5f476d 100644 --- a/include/platform.h +++ b/include/platform.h @@ -1,3 +1,4 @@ +/* vi: set sw=4 ts=4: */ /* Copyright 2006, Bernhard Fischer @@ -10,7 +11,7 @@ #undef __GNUC_PREREQ #if defined __GNUC__ && defined __GNUC_MINOR__ # define __GNUC_PREREQ(maj, min) \ - ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) + ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) #else # define __GNUC_PREREQ(maj, min) 0 #endif @@ -32,31 +33,38 @@ # endif #endif -#ifndef ATTRIBUTE_UNUSED -# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) -#endif /* ATTRIBUTE_UNUSED */ +#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 ATTRIBUTE_NORETURN -# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) -#endif /* ATTRIBUTE_NORETURN */ +#ifndef __const +# define __const const +#endif -#ifndef ATTRIBUTE_PACKED +# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) +# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__)) # define ATTRIBUTE_PACKED __attribute__ ((__packed__)) -#endif /* ATTRIBUTE_PACKED */ - -#ifndef ATTRIBUTE_ALIGNED # define ATTRIBUTE_ALIGNED(m) __attribute__ ((__aligned__(m))) -#endif /* ATTRIBUTE_ALIGNED */ +# 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. */ -#ifndef ATTRIBUTE_EXTERNALLY_VISIBLE # if __GNUC_PREREQ (4,1) # define ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((__externally_visible__)) # else # define ATTRIBUTE_EXTERNALLY_VISIBLE # endif /* GNUC >= 4.1 */ -#endif /* ATTRIBUTE_EXTERNALLY_VISIBLE */ /* We use __extension__ in some places to suppress -pedantic warnings about GCC extensions. This feature didn't work properly before @@ -67,13 +75,21 @@ # endif #endif -#ifdef __GNUC__ -#define strlen(x) bb_strlen(x) -extern size_t bb_strlen(const char *string); +/* gcc-2.95 had no va_copy but only __va_copy. */ +#if !__GNUC_PREREQ (3,0) +# include +# if !defined va_copy && defined __va_copy +# define va_copy(d,s) __va_copy((d),(s)) +# endif #endif /* ---- Endian Detection ------------------------------------ */ -#ifndef __APPLE__ + +#if (defined __digital__ && defined __unix__) +# include +# define __BIG_ENDIAN__ (BYTE_ORDER == BIG_ENDIAN) +# define __BYTE_ORDER BYTE_ORDER +#elif !defined __APPLE__ # include # include #endif @@ -89,6 +105,22 @@ extern size_t bb_strlen(const char *string); # 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 @@ -96,10 +128,154 @@ extern size_t bb_strlen(const char *string); # include #endif +#ifndef __socklen_t_defined +typedef int socklen_t; +#endif + +/* ---- Compiler dependent settings ------------------------- */ +#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 --------------------------------------- */ -/* NLS stuff */ + +#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 +#define HAVE_FEATURES_H +#include +#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. */ +#if !defined(__dietlibc__) +/* Needed for: glibc */ +/* Not needed for: dietlibc */ +/* Others: ?? (add as needed) */ +#define fdprintf dprintf +#endif + +#if defined(__dietlibc__) +static ATTRIBUTE_ALWAYS_INLINE char* strchrnul(const char *s, char c) { + while (*s && *s != c) ++s; + return (char*)s; +} +#endif + +/* Don't use lchown with glibc older than 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 */ -#define _(Text) Text -#define N_(Text) (Text) +/* FIXME: fix tar.c! */ +#ifndef FNM_LEADING_DIR +#define FNM_LEADING_DIR 0 +#endif + +#if (defined __digital__ && defined __unix__) +#include +#define HAVE_STANDARDS_H +#include +#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 +// 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 */