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* elf/dl-deps.c (_dl_map_object_deps): Start TAILP at last preload.

Browse Source 
* elf/dl-open.c (_dl_open): Force an indirect call for
	_dl_relocate_object so there is no chance a PLT fixup will be done
	and clobber _dl_global_scope before our call happens.

	* sysdeps/i386/fpu/__math.h (tan): Correct output constraint from =u
	to =t; must operate on top of fp reg stack, not second from top.
	Correct input constraint to 0 from t; must be explicit when input and
	output are the same register.
	(floor): Use __volatile instead of volatile.
	(ceil): Likewise.

	* manual/Makefile ($(objpfx)stamp%-$(subdir)): Separate rule from
	other targets.
This commit is contained in:
Roland McGrath
1996-07-14 10:04:21 +00:00
parent 2064087b5f
commit c928de7902
5 changed files with 50 additions and 19 deletions
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12
elf/dl-open.c
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@ -52,8 +52,16 @@ _dl_open (const char *file, int mode)
{
if (! l->l_relocated)
{
_dl_relocate_object (l, _dl_object_relocation_scope (l),
(mode & RTLD_BINDING_MASK) == RTLD_LAZY);
/* We use an indirect call call for _dl_relocate_object because
we must avoid using the PLT in the call. If our PLT entry for
_dl_relocate_object hasn't been used yet, then the dynamic
linker fixup routine will clobber _dl_global_scope during its
work. We must be sure that nothing will require a PLT fixup
between when _dl_object_relocation_scope returns and when we
enter the dynamic linker's code (_dl_relocate_object). */
__typeof (_dl_relocate_object) *reloc = &_dl_relocate_object;
(*reloc) (l, _dl_object_relocation_scope (l),
(mode & RTLD_BINDING_MASK) == RTLD_LAZY);
*_dl_global_scope_end = NULL;
}