diff options
| -rw-r--r-- | include/libc-internal.h | 303 |
1 files changed, 269 insertions, 34 deletions
diff --git a/include/libc-internal.h b/include/libc-internal.h index 742622e13..b07965f33 100644 --- a/include/libc-internal.h +++ b/include/libc-internal.h @@ -21,40 +21,76 @@ #include <features.h> -/* Some nice features only work properly with ELF */ -#if defined __HAVE_ELF__ -/* Define ALIASNAME as a weak alias for NAME. */ -# define weak_alias(name, aliasname) _weak_alias (name, aliasname) -# define _weak_alias(name, aliasname) \ - extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))); +#ifndef __ASSEMBLER__ +/* GCC understands weak symbols and aliases; use its interface where + possible, instead of embedded assembly language. */ + /* Define ALIASNAME as a strong alias for NAME. */ # define strong_alias(name, aliasname) _strong_alias(name, aliasname) # define _strong_alias(name, aliasname) \ extern __typeof (name) aliasname __attribute__ ((alias (#name))); + /* This comes between the return type and function name in - * a function definition to make that definition weak. */ + a function definition to make that definition weak. */ # define weak_function __attribute__ ((weak)) # define weak_const_function __attribute__ ((weak, __const__)) + +/* Define ALIASNAME as a weak alias for NAME. + If weak aliases are not available, this defines a strong alias. */ +# define weak_alias(name, aliasname) _weak_alias (name, aliasname) +# define _weak_alias(name, aliasname) \ + extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))); + +/* Declare SYMBOL as weak undefined symbol (resolved to 0 if not defined). */ +# define weak_extern(symbol) _weak_extern (weak symbol) +# define _weak_extern(expr) _Pragma (#expr) + +#else /* __ASSEMBLER__ */ + +#ifdef __SYMBOL_PREFIX +# define C_SYMBOL_NAME(name) _##name +#else +# define C_SYMBOL_NAME(name) name +#endif + +# define strong_alias(name, aliasname) \ + .global C_SYMBOL_NAME (aliasname) ; \ + .set C_SYMBOL_NAME(aliasname),C_SYMBOL_NAME(name) + +# define weak_alias(name, aliasname) \ + .weak C_SYMBOL_NAME(aliasname) ; \ + C_SYMBOL_NAME(aliasname) = C_SYMBOL_NAME(name) + +# define weak_extern(symbol) \ + .weak C_SYMBOL_NAME(symbol) + +#endif /* __ASSEMBLER__ */ + +/* When a reference to SYMBOL is encountered, the linker will emit a + warning message MSG. */ +#ifdef __HAVE_ELF__ + +/* We want the .gnu.warning.SYMBOL section to be unallocated. */ +# define __make_section_unallocated(section_string) \ + asm (".section " section_string "\n\t.previous"); + /* Tacking on "\n\t#" to the section name makes gcc put it's bogus - * section attributes on what looks like a comment to the assembler. */ -# if defined(__cris__) -# define link_warning(symbol, msg) + section attributes on what looks like a comment to the assembler. */ +# define __sec_comment "\n\t#" +# ifdef __cris__ +# define link_warning(symbol, msg) # else -# define link_warning(symbol, msg) \ - asm (".section " ".gnu.warning." #symbol "\n\t.previous"); \ - static const char __evoke_link_warning_##symbol[] \ - __attribute__ ((unused, section (".gnu.warning." #symbol "\n\t#"))) = msg; +# define link_warning(symbol, msg) \ + __make_section_unallocated (".gnu.warning." #symbol) \ + static const char __evoke_link_warning_##symbol[] \ + __attribute__ ((used, section (".gnu.warning." #symbol __sec_comment))) \ + = msg; # endif -#else /* !defined __HAVE_ELF__ */ -# define strong_alias(name, aliasname) _strong_alias (name, aliasname) -# define weak_alias(name, aliasname) _strong_alias (name, aliasname) -# define _strong_alias(name, aliasname) \ - __asm__(".global " __C_SYMBOL_PREFIX__ #aliasname "\n" \ - ".set " __C_SYMBOL_PREFIX__ #aliasname "," __C_SYMBOL_PREFIX__ #name); -# define link_warning(symbol, msg) \ - asm (".stabs \"" msg "\",30,0,0,0\n\t" \ - ".stabs \"" #symbol "\",1,0,0,0\n"); -#endif +#else /* __HAVE_ELF__ */ +# define link_warning(symbol, msg) \ + asm (".stabs \"" msg "\",30,0,0,0\n\t" \ + ".stabs \"" __C_SYMBOL_PREFIX__ #symbol "\",1,0,0,0\n"); +#endif /* __HAVE_ELF__ */ #ifndef weak_function /* If we do not have the __attribute__ ((weak)) syntax, there is no way we @@ -105,14 +141,26 @@ # define attribute_hidden #endif #define hidden_def(name) extern __typeof (name) name attribute_hidden; -/* Define ALIASNAME as a hidden weak alias for NAME. */ -# define hidden_weak_alias(name, aliasname) _hidden_weak_alias (name, aliasname) -# define _hidden_weak_alias(name, aliasname) \ - extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))) __attribute__ ((visibility ("hidden"))); -/* Define ALIASNAME as a hidden strong alias for NAME. */ + +#ifndef __ASSEMBLER__ # define hidden_strong_alias(name, aliasname) _hidden_strong_alias(name, aliasname) # define _hidden_strong_alias(name, aliasname) \ - extern __typeof (name) aliasname __attribute__ ((alias (#name))) __attribute__ ((visibility ("hidden"))); + extern __typeof (name) aliasname __attribute__ ((alias (#name))) attribute_hidden; + +# define hidden_weak_alias(name, aliasname) _hidden_weak_alias (name, aliasname) +# define _hidden_weak_alias(name, aliasname) \ + extern __typeof (name) aliasname __attribute__ ((weak, alias (#name))) attribute_hidden; +#else /* __ASSEMBLER__ */ +# define hidden_strong_alias(name, aliasname) \ + .global C_SYMBOL_NAME (aliasname) ; \ + .hidden C_SYMBOL_NAME (aliasname) ; \ + .set C_SYMBOL_NAME(aliasname),C_SYMBOL_NAME(name) + +# define hidden_weak_alias(name, aliasname) \ + .weak C_SYMBOL_NAME(aliasname) ; \ + .hidden C_SYMBOL_NAME(aliasname) ; \ + C_SYMBOL_NAME(aliasname) = C_SYMBOL_NAME(name) +#endif /* __ASSEMBLER__ */ #ifdef __UCLIBC_BUILD_RELRO__ # define attribute_relro __attribute__ ((section (".data.rel.ro"))) @@ -149,6 +197,13 @@ # define __UCXL_ALIAS(N) __UC_ALIAS(N) # endif +# define __need_size_t +# ifdef __UCLIBC_HAS_WCHAR__ +# define __need_wchar_t +# define __need_wint_t +# endif +# include <stddef.h> + # include <bits/types.h> # ifndef __ssize_t_defined @@ -156,14 +211,27 @@ typedef __ssize_t ssize_t; # define __ssize_t_defined # endif -# define __need_size_t -# include <stddef.h> - # include <bits/sigset.h> /* prototypes for internal use, please keep these in sync w/ updated headers */ /* #include <fcntl.h> */ -extern int __open(__const char *__file, int __oflag, ...) attribute_hidden; +#ifndef __USE_FILE_OFFSET64 +extern int __open (__const char *__file, int __oflag, ...) __nonnull ((1)) attribute_hidden; +extern int __fcntl (int __fd, int __cmd, ...) attribute_hidden; +#else +# ifdef __REDIRECT +extern int __REDIRECT (__open, (__const char *__file, int __oflag, ...), __open64) + __nonnull ((1)) attribute_hidden; +extern int __REDIRECT (__fcntl, (int __fd, int __cmd, ...), __fcntl64) attribute_hidden; +# else +# define __open __open64 +# define __fcntl __fcntl64 +# endif +#endif +#ifdef __USE_LARGEFILE64 +extern int __open64 (__const char *__file, int __oflag, ...) __nonnull ((1)) attribute_hidden; +extern int __fcntl64 (int __fd, int __cmd, ...) attribute_hidden; +#endif /* #include <string.h> */ extern int __memcmp (__const void *__s1, __const void *__s2, size_t __n) attribute_hidden; @@ -178,32 +246,119 @@ extern char *__strcat (char *__restrict __dest, __const char *__restrict __src) extern char *__strncpy (char *__restrict __dest, __const char *__restrict __src, size_t __n) attribute_hidden; extern char *__strchr (__const char *__s, int __c) attribute_hidden; +extern char *__strrchr (__const char *__s, int __c) attribute_hidden; extern int __strncmp (__const char *__s1, __const char *__s2, size_t __n) attribute_hidden; extern char *__strdup (__const char *__s) attribute_hidden; extern int __strcasecmp (__const char *__s1, __const char *__s2) attribute_hidden; extern int __strncasecmp (__const char *__s1, __const char *__s2, size_t __n) attribute_hidden; +extern void *__rawmemchr (__const void *__s, int __c) __THROW __attribute_pure__ __nonnull ((1)) attribute_hidden; +extern size_t __strspn (__const char *__s, __const char *__accept) + __THROW __attribute_pure__ __nonnull ((1, 2)) attribute_hidden; +extern char *__strpbrk (__const char *__s, __const char *__accept) + __THROW __attribute_pure__ __nonnull ((1, 2)) attribute_hidden; +extern size_t __strnlen (__const char *__string, size_t __maxlen) + __THROW __attribute_pure__ __nonnull ((1)) attribute_hidden; +extern char *__strtok_r (char *__restrict __s, __const char *__restrict __delim, + char **__restrict __save_ptr) __THROW __nonnull ((2, 3)) attribute_hidden; /* sources are built w/ _GNU_SOURCE, this gets undefined */ extern int __xpg_strerror_r_internal (int __errnum, char *__buf, size_t __buflen) attribute_hidden; extern char *__glibc_strerror_r_internal (int __errnum, char *__buf, size_t __buflen) attribute_hidden; +/* ctype.h */ +extern int __tolower (int __c) __THROW attribute_hidden; +extern int __toupper (int __c) __THROW attribute_hidden; + +#ifdef __UCLIBC_HAS_WCHAR__ +/* wchar.h */ +extern size_t __wcslen (__const wchar_t *__s) __THROW __attribute_pure__ attribute_hidden; +extern wchar_t *__wcscpy (wchar_t *__restrict __dest, __const wchar_t *__restrict __src) __THROW attribute_hidden; +extern size_t __wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept) + __THROW __attribute_pure__ attribute_hidden; +extern wchar_t *__wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept) + __THROW __attribute_pure__ attribute_hidden; +/* wctype.h */ +extern wint_t __towlower (wint_t __wc) __THROW attribute_hidden; +#endif + /* #include <unistd.h> */ extern ssize_t __read(int __fd, void *__buf, size_t __nbytes) attribute_hidden; extern ssize_t __write(int __fd, __const void *__buf, size_t __n) attribute_hidden; extern int __close(int __fd) attribute_hidden; extern __pid_t __getpid (void) attribute_hidden; +extern void _exit_internal (int __status) __attribute__ ((__noreturn__)) attribute_hidden; +#ifndef __USE_FILE_OFFSET64 +extern int __lockf (int __fd, int __cmd, __off_t __len) attribute_hidden; +extern __off_t __lseek (int __fd, __off_t __offset, int __whence) __THROW attribute_hidden; +#else +# ifdef __REDIRECT +extern int __REDIRECT (__lockf, (int __fd, int __cmd, __off64_t __len), + __lockf64) attribute_hidden; +extern __off64_t __REDIRECT (__lseek, + (int __fd, __off64_t __offset, int __whence), + __lseek64) attribute_hidden; +# else +# define __lockf __lockf64 +# define __lseek __lseek64 +# endif +#endif +#ifdef __USE_LARGEFILE64 +extern int __lockf64 (int __fd, int __cmd, __off64_t __len) attribute_hidden; +extern __off64_t __lseek64 (int __fd, __off64_t __offset, int __whence) __THROW attribute_hidden; +#endif /* #include <stdio.h> */ extern void __perror (__const char *__s) attribute_hidden; extern int __printf (__const char *__restrict __format, ...) attribute_hidden; extern int __sprintf (char *__restrict __s, __const char *__restrict __format, ...) attribute_hidden; + /* hack */ +#define abort __abort #define fprintf __fprintf #define fclose __fclose +#ifndef __USE_FILE_OFFSET64 +#define fopen __fopen +#else +#define fopen __fopen64 +#endif +#ifdef __USE_LARGEFILE64 +#define fopen64 __fopen64 +#endif + +/* #include <alloca.h> */ +#include <bits/stackinfo.h> +#if _STACK_GROWS_DOWN +# define extend_alloca(buf, len, newlen) \ + (__typeof (buf)) ({ size_t __newlen = (newlen); \ + char *__newbuf = alloca (__newlen); \ + if (__newbuf + __newlen == (char *) buf) \ + len += __newlen; \ + else \ + len = __newlen; \ + __newbuf; }) +#elif _STACK_GROWS_UP +# define extend_alloca(buf, len, newlen) \ + (__typeof (buf)) ({ size_t __newlen = (newlen); \ + char *__newbuf = alloca (__newlen); \ + char *__buf = (buf); \ + if (__buf + __newlen == __newbuf) \ + { \ + len += __newlen; \ + __newbuf = __buf; \ + } \ + else \ + len = __newlen; \ + __newbuf; }) +#else +# warning unknown stack +# define extend_alloca(buf, len, newlen) \ + alloca (((len) = (newlen))) +#endif /* #include <stdlib.h> */ extern char *__getenv (__const char *__name) attribute_hidden; +extern void __exit (int __status) __THROW __attribute__ ((__noreturn__)) attribute_hidden; /* #include <signal.h> */ extern int __sigprocmask (int __how, __const __sigset_t *__restrict __set, @@ -215,6 +370,67 @@ extern int __ioctl (int __fd, unsigned long int __request, ...) attribute_hidden /* #include <sys/socket.h> */ extern int __socket (int __domain, int __type, int __protocol) attribute_hidden; +/* #include <sys/stat.h> */ +#ifndef __USE_FILE_OFFSET64 +struct stat; +extern int __stat (__const char *__restrict __file, + struct stat *__restrict __buf) __THROW __nonnull ((1, 2)) attribute_hidden; +extern int __fstat (int __fd, struct stat *__buf) __THROW __nonnull ((2)) attribute_hidden; +extern int __lstat (__const char *__restrict __file, + struct stat *__restrict __buf) __THROW __nonnull ((1, 2)) attribute_hidden; +#else +# ifdef __REDIRECT_NTH +extern int __REDIRECT_NTH (__stat, (__const char *__restrict __file, + struct stat *__restrict __buf), __stat64) + __nonnull ((1, 2)) attribute_hidden; +extern int __REDIRECT_NTH (__fstat, (int __fd, struct stat *__buf), __fstat64) + __nonnull ((2)) attribute_hidden; +extern int __REDIRECT_NTH (__lstat, + (__const char *__restrict __file, + struct stat *__restrict __buf), __lstat64) + __nonnull ((1, 2)) attribute_hidden; +# else +# define __stat __stat64 +# define __fstat __fstat64 +# define __lstat __lstat64 +# endif +#endif +#ifdef __USE_LARGEFILE64 +struct stat64; +extern int __stat64 (__const char *__restrict __file, + struct stat64 *__restrict __buf) __THROW __nonnull ((1, 2)) attribute_hidden; +extern int __fstat64 (int __fd, struct stat64 *__buf) __THROW __nonnull ((2)) attribute_hidden; +extern int __lstat64 (__const char *__restrict __file, + struct stat64 *__restrict __buf) + __THROW __nonnull ((1, 2)) attribute_hidden; +#endif + +/* #include <sys/statfs.h> */ +#ifndef __USE_FILE_OFFSET64 +struct statfs; +extern int __statfs (__const char *__file, struct statfs *__buf) + __THROW __nonnull ((1, 2)) attribute_hidden; +extern int __fstatfs (int __fildes, struct statfs *__buf) + __THROW __nonnull ((2)) attribute_hidden; +#else +# ifdef __REDIRECT +extern int __REDIRECT (__statfs, + (__const char *__file, struct statfs *__buf), + __statfs64) __nonnull ((1, 2)) attribute_hidden; +extern int __REDIRECT (__fstatfs, (int __fildes, struct statfs *__buf), + __fstatfs64) __nonnull ((2)) attribute_hidden; +# else +# define __statfs __statfs64 +# endif +#endif +#ifdef __USE_LARGEFILE64 +struct statfs64; +extern int __statfs64 (__const char *__file, struct statfs64 *__buf) + __THROW __nonnull ((1, 2)) attribute_hidden; +extern int __fstatfs64 (int __fildes, struct statfs64 *__buf) + __THROW __nonnull ((2)) attribute_hidden; +#endif + # if 0 /* undoable here */ /* #include <dirent.h> */ typedef struct __dirstream DIR; @@ -228,6 +444,22 @@ extern int __fprintf (FILE *__restrict __stream, __const char *__restrict __format, ...) attribute_hidden; extern int __fclose (FILE *__stream) attribute_hidden; +#ifndef __USE_FILE_OFFSET64 +extern FILE *__fopen (__const char *__restrict __filename, + __const char *__restrict __modes) attribute_hidden; +#else +# ifdef __REDIRECT +extern FILE *__REDIRECT (__fopen, (__const char *__restrict __filename, + __const char *__restrict __modes), __fopen64) attribute_hidden; +# else +# define __fopen __fopen64 +# endif +#endif +#ifdef __USE_LARGEFILE64 +extern FILE *__fopen64 (__const char *__restrict __filename, + __const char *__restrict __modes) attribute_hidden; +#endif + /* #include <sys/time.h> */ # define __need_timeval # include <bits/time.h> @@ -242,6 +474,9 @@ extern int __gettimeofday(struct timeval *__restrict __tv, *__restrict __timezon # define __pthread_mutex_unlock(mutex) ((void)0) # endif +/* internal access to program name */ +extern const char *__uclibc_progname attribute_hidden; + # endif /* IS_IN_libc */ #endif /* __ASSEMBLER__ */ |