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2002-12-18  Ulrich Drepper  <drepper@redhat.com>

	* elf/dl-support.c [NEED_DL_SYSINFO]: Define and initialize
	_dl_sysinfo.
	[DL_SYSINFO_IMPLEMENTATION]: If defined use it to generate the needed
	code.
	* elf/rtld.c [DL_NEED_SYSINFO]: Initialize _dl_sysinfo element of
	_rtld_global.
	[DL_SYSINFO_IMPLEMENTATION]: If defined use it to generate the needed
	code.
	* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start) [NEED_DL_SYSINFO]:
	Check for AT_SYSINFO and set _dl_sysinfo appropriately.
	* sysdeps/generic/ldsodefs.h (struct rtld_global) [NEED_DL_SYSINFO]:
	Add _dl_sysinfo.
This commit is contained in:
Ulrich Drepper 2002-12-19 00:03:48 +00:00
parent 3d53957913
commit 5e28917950
6 changed files with 51 additions and 0 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2002-12-18 Ulrich Drepper <drepper@redhat.com>
* elf/dl-support.c [NEED_DL_SYSINFO]: Define and initialize
_dl_sysinfo.
[DL_SYSINFO_IMPLEMENTATION]: If defined use it to generate the needed
code.
* elf/rtld.c [DL_NEED_SYSINFO]: Initialize _dl_sysinfo element of
_rtld_global.
[DL_SYSINFO_IMPLEMENTATION]: If defined use it to generate the needed
code.
* sysdeps/generic/dl-sysdep.c (_dl_sysdep_start) [NEED_DL_SYSINFO]:
Check for AT_SYSINFO and set _dl_sysinfo appropriately.
* sysdeps/generic/ldsodefs.h (struct rtld_global) [NEED_DL_SYSINFO]:
Add _dl_sysinfo.
2002-12-18 Jakub Jelinek <jakub@redhat.com>
* misc/Versions [libc: GLIBC_2.3.1]: Move __libc_readv and

10
elf/dl-support.c
View file

@ -131,6 +131,11 @@ int _dl_correct_cache_id = _DL_CACHE_DEFAULT_ID;
struct ElfW(Phdr) *_dl_phdr;
size_t _dl_phnum;
#ifdef NEED_DL_SYSINFO
/* Needed for improved syscall handling on at least x86/Linux. */
uintptr_t _dl_sysinfo = DL_SYSINFO_DEFAULT;
#endif
/* During the program run we must not modify the global data of
loaded shared object simultanously in two threads. Therefore we
protect `_dl_open' and `_dl_close' in dl-close.c.
@ -238,3 +243,8 @@ _dl_important_hwcaps (const char *platform, size_t platform_len, size_t *sz,
*sz = 1;
return &result;
}
#ifdef DL_SYSINFO_IMPLEMENTATION
DL_SYSINFO_IMPLEMENTATION
#endif

8
elf/rtld.c
View file

@ -96,6 +96,9 @@ struct rtld_global _rtld_global =
groups implemented we have to make this the default.
Bummer. --drepper */
._dl_dynamic_weak = 1,
#endif
#ifdef NEED_DL_SYSINFO
._dl_sysinfo = DL_SYSINFO_DEFAULT,
#endif
._dl_lazy = 1,
._dl_fpu_control = _FPU_DEFAULT,
@ -132,6 +135,11 @@ static hp_timing_t start_time;
TLS_INIT_HELPER
#endif
/* Helper function for syscall implementation. */
#ifdef DL_SYSINFO_IMPLEMENTATION
DL_SYSINFO_IMPLEMENTATION
#endif
/* Before ld.so is relocated we must not access variables which need
relocations. This means variables which are exported. Variables
declared as static are fine. If we can mark a variable hidden this

8
linuxthreads/ChangeLog
View file

@ -1,3 +1,11 @@
2002-12-18 Jakub Jelinek <jakub@redhat.com>
* sysdeps/i386/useldt.h (FLOATING_STACKS, ARCH_STACK_MAX_SIZE): Only
define if __ASSUME_LDT_WORKS > 0.
* libc-cancellation.c (THREAD_GETMEM, THREAD_SETMEM): Redefine to
struct member access if !FLOATING_STACKS.
* sysdeps/pthread/flockfile.c (flockfile): Change into weak alias.
2002-12-18 Jakub Jelinek <jakub@redhat.com>
* internals.h (__pthread_thread_self): New prototype.

5
sysdeps/generic/dl-sysdep.c
View file

@ -134,6 +134,11 @@ _dl_sysdep_start (void **start_argptr,
case AT_FPUCW:
GL(dl_fpu_control) = av->a_un.a_val;
break;
#ifdef NEED_DL_SYSINFO
case AT_SYSINFO:
GL(dl_sysinfo) = av->a_un.a_val;
break;
#endif
}
#ifdef DL_SYSDEP_OSCHECK

5
sysdeps/generic/ldsodefs.h
View file

@ -384,6 +384,11 @@ struct rtld_global
EXTERN size_t _dl_tls_generation;
#endif
#ifdef NEED_DL_SYSINFO
/* Syscall handling improvements. This is very specific to x86. */
EXTERN uintptr_t _dl_sysinfo;
#endif
#ifdef SHARED
};
# define __rtld_global_attribute__