1/* Configuration file for ARM GNU/Linux FDPIC EABI targets.
2   Copyright (C) 2018-2020 Free Software Foundation, Inc.
3   Contributed by STMicroelectronics.
4
5   This file is part of GCC.
6
7   GCC is free software; you can redistribute it and/or modify it
8   under the terms of the GNU General Public License as published
9   by the Free Software Foundation; either version 3, or (at your
10   option) any later version.
11
12   GCC is distributed in the hope that it will be useful, but WITHOUT
13   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
15   License for more details.
16
17   You should have received a copy of the GNU General Public License
18   along with GCC; see the file COPYING3.  If not see
19   <http://www.gnu.org/licenses/>.  */
20
21/* On uClibc EABI GNU/Linux, we want to force -mfdpic by default,
22   which also means we produce PIE code by default.  */
23#undef FDPIC_CC1_SPEC
24#define FDPIC_CC1_SPEC \
25  "%{!mno-fdpic:-mfdpic %{!fno-PIE:%{!fpie:%{!fPIC:%{!fpic: -fPIE}}}}}"
26
27/* Add --fdpic assembler flag by default.  */
28#undef TARGET_FDPIC_ASM_SPEC
29#define TARGET_FDPIC_ASM_SPEC "%{!mno-fdpic: --fdpic}"
30
31/* TARGET_BIG_ENDIAN_DEFAULT is set in
32   config.gcc for big endian configurations.  */
33#if TARGET_BIG_ENDIAN_DEFAULT
34#define TARGET_FDPIC_LINKER_EMULATION "armelfb_linux_fdpiceabi"
35#else
36#define TARGET_FDPIC_LINKER_EMULATION "armelf_linux_fdpiceabi"
37#endif
38
39/* Unless we generate a shared library or a relocatable object, we
40   force -pie.  */
41/* -static is not supported, because we have to define the
42   dynamic-linker, as we have some relocations to resolve at load
43   time. We do not generate an error in case the user explictly passes
44   the -dynamic-linker option to the linker.  */
45#undef  SUBTARGET_EXTRA_LINK_SPEC
46#define SUBTARGET_EXTRA_LINK_SPEC			    \
47  "%{!mno-fdpic: -m " TARGET_FDPIC_LINKER_EMULATION	    \
48   "%{!shared:%{!r: -pie}} }"				    \
49  "%{mno-fdpic: -m " TARGET_LINKER_EMULATION "}"	    \
50  "%{!r:%{!mno-fdpic: -z now}}"
51
52#undef	STARTFILE_SPEC
53#define STARTFILE_SPEC "%{!mno-fdpic:%{!shared:crtreloc.o%s}} " \
54  LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
55