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Update. 

* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Don't set
	GL(dl_sysinfo) unles GL(dl_sysinfo_dso) is also set.
	* sysdeps/unix/sysv/linux/kernel-features.h: Define
	__ASSUME_VSYSCALL only for 2.5.69 and up since this is when the
	vsyscall DSO was added.
This commit is contained in:
Ulrich Drepper 2003-07-02 08:49:09 +00:00
parent ef8783de8f
commit fcdac13afa
3 changed files with 22 additions and 3 deletions
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6
ChangeLog
View File

@ -1,5 +1,11 @@
2003-07-02 Ulrich Drepper <drepper@redhat.com>
* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Don't set
GL(dl_sysinfo) unles GL(dl_sysinfo_dso) is also set.
* sysdeps/unix/sysv/linux/kernel-features.h: Define
__ASSUME_VSYSCALL only for 2.5.69 and up since this is when the
vsyscall DSO was added.
* posix/bits/posix1_lim.h (_POSIX_NGROUPS_MAX): Define to 8 or 0
depending on selected standard.
(NGROUPS_MAX): Define to 8 if not defined.

15
sysdeps/generic/dl-sysdep.c
View File

@ -92,6 +92,9 @@ _dl_sysdep_start (void **start_argptr,
# define M(type) (1 << (type))
# define set_seen(tag) seen |= M ((tag)->a_type)
# endif
#endif
#ifndef __ASSUME_VSYSCALL
ElfW(Word) new_sysinfo = 0;
#endif
DL_FIND_ARG_COMPONENTS (start_argptr, _dl_argc, INTUSE(_dl_argv), _environ,
@ -146,7 +149,11 @@ _dl_sysdep_start (void **start_argptr,
break;
#ifdef NEED_DL_SYSINFO
case AT_SYSINFO:
# ifndef __ASSUME_VSYSCALL
new_sysinfo = av->a_un.a_val;
# else
GL(dl_sysinfo) = av->a_un.a_val;
# endif
break;
case AT_SYSINFO_EHDR:
GL(dl_sysinfo_dso) = av->a_un.a_ptr;
@ -167,7 +174,7 @@ _dl_sysdep_start (void **start_argptr,
/* Fill in the values we have not gotten from the kernel through the
auxiliary vector. */
# ifndef HAVE_AUX_XID
# define SEE(UID, var, uid) \
# define SEE(UID, var, uid) \
if ((seen & M (AT_##UID)) == 0) var ^= __get##uid ()
SEE (UID, uid, uid);
SEE (EUID, uid, euid);
@ -186,6 +193,12 @@ _dl_sysdep_start (void **start_argptr,
GL(dl_pagesize) = __getpagesize ();
#endif
#ifndef __ASSUME_VSYSCALL
/* Only set the sysinfo value if we also have the vsyscall DSO. */
if (GL(dl_sysinfo_dso) != 0)
GL(dl_sysinfo) = new_sysinfo;
#endif
#ifdef DL_SYSDEP_INIT
DL_SYSDEP_INIT;
#endif

4
sysdeps/unix/sysv/linux/kernel-features.h
View File

@ -307,8 +307,8 @@
#endif
/* For x86, support for the sysenter instruction was available in
2.5.53. */
#if __LINUX_KERNEL_VERSION >= 132405 && defined __i386__
2.5.53. But the unwind information was added only in 2.5.69. */
#if __LINUX_KERNEL_VERSION >= 132421 && defined __i386__
# define __ASSUME_VSYSCALL 1
#endif