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