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/* Linux/i386 CET initializers function.
Copyright (C) 2018 Free Software Foundation, Inc.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#define LINKAGE static inline
#define _dl_cet_check cet_check
#include <sysdeps/x86/dl-cet.c>
#undef _dl_cet_check
#ifdef SHARED
void
_dl_cet_check (struct link_map *main_map, const char *program)
{
cet_check (main_map, program);
if ((GL(dl_x86_feature_1)[0] & GNU_PROPERTY_X86_FEATURE_1_SHSTK))
{
/* Replace _dl_runtime_resolve and _dl_runtime_profile with
_dl_runtime_resolve_shstk and _dl_runtime_profile_shstk,
respectively if SHSTK is enabled. */
extern void _dl_runtime_resolve (Elf32_Word) attribute_hidden;
extern void _dl_runtime_resolve_shstk (Elf32_Word) attribute_hidden;
extern void _dl_runtime_profile (Elf32_Word) attribute_hidden;
extern void _dl_runtime_profile_shstk (Elf32_Word) attribute_hidden;
unsigned int i;
struct link_map *l;
Elf32_Addr *got;
if (main_map->l_info[DT_JMPREL])
{
got = (Elf32_Addr *) D_PTR (main_map, l_info[DT_PLTGOT]);
if (got[2] == (Elf32_Addr) &_dl_runtime_resolve)
got[2] = (Elf32_Addr) &_dl_runtime_resolve_shstk;
else if (got[2] == (Elf32_Addr) &_dl_runtime_profile)
got[2] = (Elf32_Addr) &_dl_runtime_profile_shstk;
}
i = main_map->l_searchlist.r_nlist;
while (i-- > 0)
{
l = main_map->l_initfini[i];
if (l->l_info[DT_JMPREL])
{
got = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
if (got[2] == (Elf32_Addr) &_dl_runtime_resolve)
got[2] = (Elf32_Addr) &_dl_runtime_resolve_shstk;
else if (got[2] == (Elf32_Addr) &_dl_runtime_profile)
got[2] = (Elf32_Addr) &_dl_runtime_profile_shstk;
}
}
}
}
#endif
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