mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-09 04:11:27 +08:00
9e38f455a6
When CET is enabled, it is an error to dlopen a non CET enabled shared library in CET enabled application. It may be desirable to make CET permissive, that is disable CET when dlopening a non CET enabled shared library. With the new --enable-cet=permissive configure option, CET is disabled when dlopening a non CET enabled shared library. Add DEFAULT_DL_X86_CET_CONTROL to config.h.in: /* The default value of x86 CET control. */ #define DEFAULT_DL_X86_CET_CONTROL cet_elf_property which enables CET features based on ELF property note. --enable-cet=permissive it to /* The default value of x86 CET control. */ #define DEFAULT_DL_X86_CET_CONTROL cet_permissive which enables CET features permissively. Update tst-cet-legacy-5a, tst-cet-legacy-5b, tst-cet-legacy-6a and tst-cet-legacy-6b to check --enable-cet and --enable-cet=permissive.
78 lines
2.2 KiB
C
78 lines
2.2 KiB
C
/* Data for processor runtime information. x86 version.
|
|
Copyright (C) 2018-2020 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
/* This information must be kept in sync with the _DL_HWCAP_COUNT,
|
|
HWCAP_PLATFORMS_START and HWCAP_PLATFORMS_COUNT definitions in
|
|
dl-hwcap.h.
|
|
|
|
If anything should be added here check whether the size of each string
|
|
is still ok with the given array size.
|
|
|
|
All the #ifdefs in the definitions are quite irritating but
|
|
necessary if we want to avoid duplicating the information. There
|
|
are three different modes:
|
|
|
|
- PROCINFO_DECL is defined. This means we are only interested in
|
|
declarations.
|
|
|
|
- PROCINFO_DECL is not defined:
|
|
|
|
+ if SHARED is defined the file is included in an array
|
|
initializer. The .element = { ... } syntax is needed.
|
|
|
|
+ if SHARED is not defined a normal array initialization is
|
|
needed.
|
|
*/
|
|
|
|
#ifndef PROCINFO_CLASS
|
|
# define PROCINFO_CLASS
|
|
#endif
|
|
|
|
#if !IS_IN (ldconfig)
|
|
# if !defined PROCINFO_DECL && defined SHARED
|
|
._dl_x86_feature_1
|
|
# else
|
|
PROCINFO_CLASS unsigned int _dl_x86_feature_1
|
|
# endif
|
|
# ifndef PROCINFO_DECL
|
|
= 0
|
|
# endif
|
|
# if !defined SHARED || defined PROCINFO_DECL
|
|
;
|
|
# else
|
|
,
|
|
# endif
|
|
|
|
# if !defined PROCINFO_DECL && defined SHARED
|
|
._dl_x86_feature_control
|
|
# else
|
|
PROCINFO_CLASS struct dl_x86_feature_control _dl_x86_feature_control
|
|
# endif
|
|
# ifndef PROCINFO_DECL
|
|
= {
|
|
.ibt = DEFAULT_DL_X86_CET_CONTROL,
|
|
.shstk = DEFAULT_DL_X86_CET_CONTROL,
|
|
}
|
|
# endif
|
|
# if !defined SHARED || defined PROCINFO_DECL
|
|
;
|
|
# else
|
|
,
|
|
# endif
|
|
#endif
|