mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +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.
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
#ifndef _SETJMP_H
|
|
#include <setjmp/setjmp.h>
|
|
|
|
#ifndef _ISOMAC
|
|
/* Now define the internal interfaces. */
|
|
|
|
/* Internal machine-dependent function to restore context sans signal mask. */
|
|
extern void __longjmp (__jmp_buf __env, int __val)
|
|
__attribute__ ((__noreturn__)) attribute_hidden;
|
|
|
|
extern void ____longjmp_chk (__jmp_buf __env, int __val)
|
|
__attribute__ ((__noreturn__)) attribute_hidden;
|
|
|
|
/* Internal function to possibly save the current mask of blocked signals
|
|
in ENV, and always set the flag saying whether or not it was saved.
|
|
This is used by the machine-dependent definition of `__sigsetjmp'.
|
|
Always returns zero, for convenience. */
|
|
extern int __sigjmp_save (jmp_buf __env, int __savemask);
|
|
|
|
extern void _longjmp_unwind (jmp_buf env, int val);
|
|
|
|
extern void __libc_siglongjmp (sigjmp_buf env, int val)
|
|
__attribute__ ((noreturn));
|
|
extern void __libc_longjmp (sigjmp_buf env, int val)
|
|
__attribute__ ((noreturn));
|
|
libc_hidden_proto (__libc_longjmp)
|
|
|
|
libc_hidden_proto (_setjmp)
|
|
libc_hidden_proto (__sigsetjmp)
|
|
|
|
# if IS_IN (rtld) && !defined NO_RTLD_HIDDEN
|
|
extern __typeof (__sigsetjmp) __sigsetjmp attribute_hidden;
|
|
# endif
|
|
#endif
|
|
|
|
#endif
|