mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-26 12:41:05 +00:00
3d1870fa33
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.
106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/* Internal function for converting integers to ASCII.
|
|
Copyright (C) 1994-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _ITOA_H
|
|
#define _ITOA_H
|
|
|
|
#include <limits.h>
|
|
|
|
/* When long long is different from long, by default, _itoa_word is
|
|
provided to convert long to ASCII and _itoa is provided to convert
|
|
long long. A sysdeps _itoa.h can define _ITOA_NEEDED to 0 and define
|
|
_ITOA_WORD_TYPE to unsigned long long int to override it so that
|
|
_itoa_word is changed to convert long long to ASCII and _itoa is
|
|
mapped to _itoa_word. */
|
|
|
|
#ifndef _ITOA_NEEDED
|
|
# define _ITOA_NEEDED (LONG_MAX != LLONG_MAX)
|
|
#endif
|
|
#ifndef _ITOA_WORD_TYPE
|
|
# define _ITOA_WORD_TYPE unsigned long int
|
|
#endif
|
|
|
|
|
|
/* Convert VALUE into ASCII in base BASE (2..36).
|
|
Write backwards starting the character just before BUFLIM.
|
|
Return the address of the first (left-to-right) character in the number.
|
|
Use upper case letters iff UPPER_CASE is nonzero. */
|
|
|
|
extern char *_itoa (unsigned long long int value, char *buflim,
|
|
unsigned int base, int upper_case) attribute_hidden;
|
|
|
|
extern const char _itoa_upper_digits[];
|
|
extern const char _itoa_lower_digits[];
|
|
#if IS_IN (libc) || (IS_IN (rtld) && !defined NO_RTLD_HIDDEN)
|
|
hidden_proto (_itoa_upper_digits)
|
|
hidden_proto (_itoa_lower_digits)
|
|
#endif
|
|
|
|
#if IS_IN (libc)
|
|
extern char *_itoa_word (_ITOA_WORD_TYPE value, char *buflim,
|
|
unsigned int base,
|
|
int upper_case) attribute_hidden;
|
|
#else
|
|
static inline char * __attribute__ ((unused, always_inline))
|
|
_itoa_word (_ITOA_WORD_TYPE value, char *buflim,
|
|
unsigned int base, int upper_case)
|
|
{
|
|
const char *digits = (upper_case
|
|
? _itoa_upper_digits
|
|
: _itoa_lower_digits);
|
|
|
|
switch (base)
|
|
{
|
|
# define SPECIAL(Base) \
|
|
case Base: \
|
|
do \
|
|
*--buflim = digits[value % Base]; \
|
|
while ((value /= Base) != 0); \
|
|
break
|
|
|
|
SPECIAL (10);
|
|
SPECIAL (16);
|
|
SPECIAL (8);
|
|
default:
|
|
do
|
|
*--buflim = digits[value % base];
|
|
while ((value /= base) != 0);
|
|
}
|
|
return buflim;
|
|
}
|
|
# undef SPECIAL
|
|
#endif
|
|
|
|
/* Similar to the _itoa functions, but output starts at buf and pointer
|
|
after the last written character is returned. */
|
|
extern char *_fitoa_word (_ITOA_WORD_TYPE value, char *buf,
|
|
unsigned int base,
|
|
int upper_case) attribute_hidden;
|
|
extern char *_fitoa (unsigned long long value, char *buf, unsigned int base,
|
|
int upper_case) attribute_hidden;
|
|
|
|
#if !_ITOA_NEEDED
|
|
/* No need for special long long versions. */
|
|
# define _itoa(value, buf, base, upper_case) \
|
|
_itoa_word (value, buf, base, upper_case)
|
|
# define _fitoa(value, buf, base, upper_case) \
|
|
_fitoa_word (value, buf, base, upper_case)
|
|
#endif
|
|
|
|
#endif /* itoa.h */
|