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glibc/include/stdlib.h
Samuel Thibault 3d1870fa33 Introduce NO_RTLD_HIDDEN, make hurd use it instead of NO_HIDDEN 
On the Hurd, the rtld needs to see its own dumb versions of a few functions
(defined in sysdeps/mach/hurd/dl-sysdep.c) overridden by libc's versions once
loaded. rtld should thus not have hidden attribute for these.  To achieve this,
the Hurd port used to just define NO_HIDDEN, which disables it completely. For
now, this changes that to disabling it for all rtld functions, for simplicity.

See Roland's comment on https://sourceware.org/bugzilla/show_bug.cgi?id=15605#c5

The ld.so numbers remain at

  8 .rel.plt      000000c8  00000c24  00000c24  00000c24  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  9 .plt          000001a0  00000cf0  00000cf0  00000cf0  2**4
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
 10 .plt.got      00000010  00000e90  00000e90  00000e90  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
 18 .got.plt      00000070  0002d000  0002d000  0002c000  2**2
                  CONTENTS, ALLOC, LOAD, DATA

which is about 3 times as much as on Linux.

The libc.so numbers get divided by 3 (the remainings are mostly RPC stub calls)

	* include/libc-symbols.h [NO_RTLD_HIDDEN] (rtld_hidden_proto,
	rtld_hidden_tls_proto, rtld_hidden_def, rtld_hidden_weak,
	rtld_hidden_rtld_hidden_ver, data_def, rtld_hidden_data_weak,
	rtld_hidden_data_ver): Define to empty.
	* include/assert.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__assert_fail,
	__assert_perror_fail): Likewise.
	* include/dirent.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
	(__rewinddir): Likewise.
	* include/libc-internal.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
	(__profile_frequency): Likewise.
	* include/setjmp.h (__sigsetjmp): Likewise.
	* include/signal.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__sigaction,
	__libc_sigaction): Likewise.
	* include/stdlib.h [NO_RTLD_HIDDEN] (unsetenv, __strtoul_internal): Do
	not set hidden attribute.
	* include/string.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__stpcpy, __strdup,
	__strerror_t, __strsep_g, memchr, memcmp, memcpy, memmove, memset,
	rawmemchr, stpcpy, strchr, strcmp, strlen, strnlen, strsep): Likewise.
	* include/sys/stat.h [IS_IN(rtld) && NO_RTLD_HIDDEN] (__fxstat,
	__fxstat64, __lxstat, __lxstat64, __xstat, __xstat64,
	__fxstatat64): Likewise.
	* include/sys/utsname.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
	(__uname): Likewise.
	* include/sysdeps/generic/_itoa.h [IS_IN(rtld) && NO_RTLD_HIDDEN]
	(_itoa_upper_digits, _itoa_lower_digits): Likewise.
	* sysdeps/mach/hurd/configure.ac (NO_HIDDEN): Do not set.
	(NO_RTLD_HIDDEN): Set.
	* sysdeps/mach/hurd/configure: Refresh.
	* config.h.in: Refresh.
2017-10-03 01:33:38 +02:00

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#ifndef _STDLIB_H
#ifndef _ISOMAC
# include <stddef.h>
#endif
#include <stdlib/stdlib.h>
/* Now define the internal interfaces. */
#if !defined _ISOMAC
# include <sys/stat.h>
extern __typeof (strtol_l) __strtol_l;
extern __typeof (strtoul_l) __strtoul_l;
extern __typeof (strtoll_l) __strtoll_l;
extern __typeof (strtoull_l) __strtoull_l;
extern __typeof (strtod_l) __strtod_l;
extern __typeof (strtof_l) __strtof_l;
extern __typeof (strtold_l) __strtold_l;
libc_hidden_proto (__strtol_l)
libc_hidden_proto (__strtoul_l)
libc_hidden_proto (__strtoll_l)
libc_hidden_proto (__strtoull_l)
libc_hidden_proto (__strtod_l)
libc_hidden_proto (__strtof_l)
libc_hidden_proto (__strtold_l)
libc_hidden_proto (exit)
libc_hidden_proto (abort)
libc_hidden_proto (getenv)
extern __typeof (secure_getenv) __libc_secure_getenv;
libc_hidden_proto (__libc_secure_getenv)
libc_hidden_proto (bsearch)
libc_hidden_proto (qsort)
extern __typeof (qsort_r) __qsort_r;
libc_hidden_proto (__qsort_r)
libc_hidden_proto (lrand48_r)
libc_hidden_proto (wctomb)
extern long int __random (void) attribute_hidden;
extern void __srandom (unsigned int __seed);
extern char *__initstate (unsigned int __seed, char *__statebuf,
size_t __statelen);
extern char *__setstate (char *__statebuf);
extern int __random_r (struct random_data *__buf, int32_t *__result)
attribute_hidden;
extern int __srandom_r (unsigned int __seed, struct random_data *__buf)
attribute_hidden;
extern int __initstate_r (unsigned int __seed, char *__statebuf,
size_t __statelen, struct random_data *__buf)
attribute_hidden;
extern int __setstate_r (char *__statebuf, struct random_data *__buf)
attribute_hidden;
extern int __rand_r (unsigned int *__seed);
extern int __erand48_r (unsigned short int __xsubi[3],
struct drand48_data *__buffer, double *__result)
attribute_hidden;
extern int __nrand48_r (unsigned short int __xsubi[3],
struct drand48_data *__buffer,
long int *__result) attribute_hidden;
extern int __jrand48_r (unsigned short int __xsubi[3],
struct drand48_data *__buffer,
long int *__result) attribute_hidden;
extern int __srand48_r (long int __seedval,
struct drand48_data *__buffer) attribute_hidden;
extern int __seed48_r (unsigned short int __seed16v[3],
struct drand48_data *__buffer) attribute_hidden;
extern int __lcong48_r (unsigned short int __param[7],
struct drand48_data *__buffer) attribute_hidden;
/* Internal function to compute next state of the generator. */
extern int __drand48_iterate (unsigned short int __xsubi[3],
struct drand48_data *__buffer)
attribute_hidden;
/* Global state for non-reentrant functions. Defined in drand48-iter.c. */
extern struct drand48_data __libc_drand48_data attribute_hidden;
extern int __setenv (const char *__name, const char *__value, int __replace)
attribute_hidden;
extern int __unsetenv (const char *__name) attribute_hidden;
extern int __clearenv (void) attribute_hidden;
extern char *__mktemp (char *__template) __THROW __nonnull ((1));
extern char *__canonicalize_file_name (const char *__name);
extern char *__realpath (const char *__name, char *__resolved);
libc_hidden_proto (__realpath)
extern int __ptsname_r (int __fd, char *__buf, size_t __buflen)
attribute_hidden;
# ifndef _ISOMAC
extern int __ptsname_internal (int fd, char *buf, size_t buflen,
struct stat64 *stp) attribute_hidden;
# endif
extern int __getpt (void);
extern int __posix_openpt (int __oflag) attribute_hidden;
extern int __add_to_environ (const char *name, const char *value,
const char *combines, int replace)
attribute_hidden;
extern void _quicksort (void *const pbase, size_t total_elems,
size_t size, __compar_d_fn_t cmp, void *arg);
extern int __on_exit (void (*__func) (int __status, void *__arg), void *__arg);
extern int __cxa_atexit (void (*func) (void *), void *arg, void *d);
libc_hidden_proto (__cxa_atexit);
extern int __cxa_thread_atexit_impl (void (*func) (void *), void *arg,
void *d);
extern void __call_tls_dtors (void)
#ifndef SHARED
__attribute__ ((weak))
#endif
;
libc_hidden_proto (__call_tls_dtors)
extern void __cxa_finalize (void *d);
extern int __posix_memalign (void **memptr, size_t alignment, size_t size);
extern void *__libc_memalign (size_t alignment, size_t size)
__attribute_malloc__;
extern void *__libc_reallocarray (void *__ptr, size_t __nmemb, size_t __size)
__THROW __attribute_warn_unused_result__;
libc_hidden_proto (__libc_reallocarray)
extern int __libc_system (const char *line);
extern double __strtod_internal (const char *__restrict __nptr,
char **__restrict __endptr, int __group)
__THROW __nonnull ((1)) __wur;
extern float __strtof_internal (const char *__restrict __nptr,
char **__restrict __endptr, int __group)
__THROW __nonnull ((1)) __wur;
extern long double __strtold_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __group)
__THROW __nonnull ((1)) __wur;
extern long int __strtol_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group)
__THROW __nonnull ((1)) __wur;
extern unsigned long int __strtoul_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group)
__THROW __nonnull ((1)) __wur;
__extension__
extern long long int __strtoll_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group)
__THROW __nonnull ((1)) __wur;
__extension__
extern unsigned long long int __strtoull_internal (const char *
__restrict __nptr,
char **__restrict __endptr,
int __base, int __group)
__THROW __nonnull ((1)) __wur;
libc_hidden_proto (__strtof_internal)
libc_hidden_proto (__strtod_internal)
libc_hidden_proto (__strtold_internal)
libc_hidden_proto (__strtol_internal)
libc_hidden_proto (__strtoll_internal)
libc_hidden_proto (__strtoul_internal)
libc_hidden_proto (__strtoull_internal)
extern double ____strtod_l_internal (const char *__restrict __nptr,
char **__restrict __endptr, int __group,
locale_t __loc);
extern float ____strtof_l_internal (const char *__restrict __nptr,
char **__restrict __endptr, int __group,
locale_t __loc);
extern long double ____strtold_l_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __group, locale_t __loc);
extern long int ____strtol_l_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group,
locale_t __loc);
extern unsigned long int ____strtoul_l_internal (const char *
__restrict __nptr,
char **__restrict __endptr,
int __base, int __group,
locale_t __loc);
__extension__
extern long long int ____strtoll_l_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __base, int __group,
locale_t __loc);
__extension__
extern unsigned long long int ____strtoull_l_internal (const char *
__restrict __nptr,
char **
__restrict __endptr,
int __base, int __group,
locale_t __loc);
libc_hidden_proto (____strtof_l_internal)
libc_hidden_proto (____strtod_l_internal)
libc_hidden_proto (____strtold_l_internal)
libc_hidden_proto (____strtol_l_internal)
libc_hidden_proto (____strtoll_l_internal)
libc_hidden_proto (____strtoul_l_internal)
libc_hidden_proto (____strtoull_l_internal)
libc_hidden_proto (strtof)
libc_hidden_proto (strtod)
libc_hidden_proto (strtold)
libc_hidden_proto (strtol)
libc_hidden_proto (strtoll)
libc_hidden_proto (strtoul)
libc_hidden_proto (strtoull)
extern float __strtof_nan (const char *, char **, char);
extern double __strtod_nan (const char *, char **, char);
extern long double __strtold_nan (const char *, char **, char);
extern float __wcstof_nan (const wchar_t *, wchar_t **, wchar_t);
extern double __wcstod_nan (const wchar_t *, wchar_t **, wchar_t);
extern long double __wcstold_nan (const wchar_t *, wchar_t **, wchar_t);
libc_hidden_proto (__strtof_nan)
libc_hidden_proto (__strtod_nan)
libc_hidden_proto (__strtold_nan)
libc_hidden_proto (__wcstof_nan)
libc_hidden_proto (__wcstod_nan)
libc_hidden_proto (__wcstold_nan)
/* Enable _FloatN bits as needed. */
#include <bits/floatn.h>
#if __HAVE_DISTINCT_FLOAT128
extern __typeof (strtof128_l) __strtof128_l;
libc_hidden_proto (__strtof128_l)
libc_hidden_proto (strtof128)
extern _Float128 __strtof128_nan (const char *, char **, char);
extern _Float128 __wcstof128_nan (const wchar_t *, wchar_t **, wchar_t);
libc_hidden_proto (__strtof128_nan)
libc_hidden_proto (__wcstof128_nan)
extern _Float128 __strtof128_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __group);
libc_hidden_proto (__strtof128_internal)
extern _Float128 ____strtof128_l_internal (const char *__restrict __nptr,
char **__restrict __endptr,
int __group, locale_t __loc);
libc_hidden_proto (____strtof128_l_internal)
#endif
extern char *__ecvt (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign);
extern char *__fcvt (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign);
extern char *__gcvt (double __value, int __ndigit, char *__buf);
extern int __ecvt_r (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign, char *__restrict __buf,
size_t __len);
libc_hidden_proto (__ecvt_r)
extern int __fcvt_r (double __value, int __ndigit, int *__restrict __decpt,
int *__restrict __sign, char *__restrict __buf,
size_t __len);
libc_hidden_proto (__fcvt_r)
extern char *__qecvt (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign);
extern char *__qfcvt (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign);
extern char *__qgcvt (long double __value, int __ndigit, char *__buf);
extern int __qecvt_r (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign,
char *__restrict __buf, size_t __len);
libc_hidden_proto (__qecvt_r)
extern int __qfcvt_r (long double __value, int __ndigit,
int *__restrict __decpt, int *__restrict __sign,
char *__restrict __buf, size_t __len);
libc_hidden_proto (__qfcvt_r)
# if IS_IN (libc)
# undef MB_CUR_MAX
# define MB_CUR_MAX (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MB_CUR_MAX))
# endif
extern void *__default_morecore (ptrdiff_t) __THROW;
libc_hidden_proto (__default_morecore)
struct abort_msg_s
{
unsigned int size;
char msg[0];
};
extern struct abort_msg_s *__abort_msg;
libc_hidden_proto (__abort_msg)
# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN
extern __typeof (unsetenv) unsetenv attribute_hidden;
extern __typeof (__strtoul_internal) __strtoul_internal attribute_hidden;
# endif
#endif
#endif /* include/stdlib.h */
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