1 /* Configuration file for ARM GNU/Linux EABI targets.
2 Copyright (C) 2004-2013 Free Software Foundation, Inc.
3 Contributed by CodeSourcery, LLC
5 This file is part of GCC.
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.
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.
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/>. */
21 /* On EABI GNU/Linux, we want both the BPABI builtins and the
22 GNU/Linux builtins. */
23 #undef TARGET_OS_CPP_BUILTINS
24 #define TARGET_OS_CPP_BUILTINS() \
27 TARGET_BPABI_CPP_BUILTINS(); \
28 GNU_USER_TARGET_OS_CPP_BUILTINS(); \
29 ANDROID_TARGET_OS_CPP_BUILTINS(); \
33 /* We default to a soft-float ABI so that binaries can run on all
34 target hardware. If you override this to use the hard-float ABI then
35 change the setting of GLIBC_DYNAMIC_LINKER_DEFAULT as well. */
36 #undef TARGET_DEFAULT_FLOAT_ABI
37 #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
39 /* We default to the "aapcs-linux" ABI so that enums are int-sized by
41 #undef ARM_DEFAULT_ABI
42 #define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
44 /* Default to armv5t so that thumb shared libraries work.
45 The ARM10TDMI core is the default for armv5t, so set
46 SUBTARGET_CPU_DEFAULT to achieve this. */
47 #undef SUBTARGET_CPU_DEFAULT
48 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
50 /* TARGET_BIG_ENDIAN_DEFAULT is set in
51 config.gcc for big endian configurations. */
52 #undef TARGET_LINKER_EMULATION
53 #if TARGET_BIG_ENDIAN_DEFAULT
54 #define TARGET_LINKER_EMULATION "armelfb_linux_eabi"
56 #define TARGET_LINKER_EMULATION "armelf_linux_eabi"
59 #undef SUBTARGET_EXTRA_LINK_SPEC
60 #define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
62 /* GNU/Linux on ARM currently supports three dynamic linkers:
63 - ld-linux.so.2 - for the legacy ABI
64 - ld-linux.so.3 - for the EABI-derived soft-float ABI
65 - ld-linux-armhf.so.3 - for the EABI-derived hard-float ABI.
66 All the dynamic linkers live in /lib.
67 We default to soft-float, but this can be overridden by changing both
68 GLIBC_DYNAMIC_LINKER_DEFAULT and TARGET_DEFAULT_FLOAT_ABI. */
70 #undef GLIBC_DYNAMIC_LINKER
71 #define GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "/lib/ld-linux.so.3"
72 #define GLIBC_DYNAMIC_LINKER_HARD_FLOAT "/lib/ld-linux-armhf.so.3"
73 #define GLIBC_DYNAMIC_LINKER_DEFAULT GLIBC_DYNAMIC_LINKER_SOFT_FLOAT
75 #define GLIBC_DYNAMIC_LINKER \
76 "%{mfloat-abi=hard:" GLIBC_DYNAMIC_LINKER_HARD_FLOAT "} \
77 %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
78 %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
80 /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
81 use the GNU/Linux version, not the generic BPABI version. */
83 #define LINK_SPEC BE8_LINK_SPEC \
84 LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC, \
85 LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
88 #define ASAN_CC1_SPEC "%{fsanitize=*:-funwind-tables}"
92 LINUX_OR_ANDROID_CC (GNU_USER_TARGET_CC1_SPEC " " ASAN_CC1_SPEC, \
93 GNU_USER_TARGET_CC1_SPEC " " ASAN_CC1_SPEC " " \
96 #define CC1PLUS_SPEC \
97 LINUX_OR_ANDROID_CC ("", ANDROID_CC1PLUS_SPEC)
101 LINUX_OR_ANDROID_LD (GNU_USER_TARGET_LIB_SPEC, \
102 GNU_USER_TARGET_LIB_SPEC " " ANDROID_LIB_SPEC)
104 #undef STARTFILE_SPEC
105 #define STARTFILE_SPEC \
106 LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
109 #define ENDFILE_SPEC \
110 LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
112 /* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
113 do not use -lfloat. */
116 /* Clear the instruction cache from `beg' to `end'. This is
117 implemented in lib1funcs.S, so ensure an error if this definition
119 #undef CLEAR_INSN_CACHE
120 #define CLEAR_INSN_CACHE(BEG, END) not_used
122 #define ARM_TARGET2_DWARF_FORMAT (DW_EH_PE_pcrel | DW_EH_PE_indirect)