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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2017-10-03 01:26:58 +0200 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2017-10-03 01:33:38 +0200 |
| commit | 3d1870fa3301c5cd00d5fdab0014c4e22b71fef2 (patch) | |
| tree | 16a225633d1dac36b3914e16221145104e1f24cd /config.h.in | |
| parent | 38722448c64682628244d285c1e30c8887a8c801 (diff) | |
| download | glibc-3d1870fa3301c5cd00d5fdab0014c4e22b71fef2.tar.gz | |
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.
Diffstat (limited to 'config.h.in')
| -rw-r--r-- | config.h.in | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/config.h.in b/config.h.in index 014fb4ea0e..0d38476fa4 100644 --- a/config.h.in +++ b/config.h.in @@ -89,6 +89,10 @@ include/libc-symbols.h that avoid PLT slots in the shared objects. */ #undef NO_HIDDEN +/* Define this to disable in rtld the 'hidden_proto' et al macros in + include/libc-symbols.h that avoid PLT slots in the shared objects. */ +#undef NO_RTLD_HIDDEN + /* Define this to disable lazy relocations in DSOs. */ #undef BIND_NOW |