/* Configuration file for ARM GNU/Linux EABI targets.
- Copyright (C) 2004, 2005, 2006
- Free Software Foundation, Inc.
+ Copyright (C) 2004-2020 Free Software Foundation, Inc.
Contributed by CodeSourcery, LLC
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
+ by the Free Software Foundation; either version 3, or (at your
option) any later version.
GCC is distributed in the hope that it will be useful, but WITHOUT
License for more details.
You should have received a copy of the GNU General Public License
- along with GCC; see the file COPYING. If not, write to
- the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
/* On EABI GNU/Linux, we want both the BPABI builtins and the
GNU/Linux builtins. */
-#undef TARGET_OS_CPP_BUILTINS
+#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS() \
do \
{ \
TARGET_BPABI_CPP_BUILTINS(); \
- LINUX_TARGET_OS_CPP_BUILTINS(); \
+ GNU_USER_TARGET_OS_CPP_BUILTINS(); \
+ ANDROID_TARGET_OS_CPP_BUILTINS(); \
} \
while (false)
+#define EXTRA_TARGET_D_OS_VERSIONS() \
+ ANDROID_TARGET_D_OS_VERSIONS();
+
/* We default to a soft-float ABI so that binaries can run on all
- target hardware. */
-#undef TARGET_DEFAULT_FLOAT_ABI
+ target hardware. If you override this to use the hard-float ABI then
+ change the setting of GLIBC_DYNAMIC_LINKER_DEFAULT as well. */
+#undef TARGET_DEFAULT_FLOAT_ABI
#define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
/* We default to the "aapcs-linux" ABI so that enums are int-sized by
default. */
-#undef ARM_DEFAULT_ABI
+#undef ARM_DEFAULT_ABI
#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
-/* Default to armv5t so that thumb shared libraries work.
- The ARM10TDMI core is the default for armv5t, so set
- SUBTARGET_CPU_DEFAULT to achieve this. */
-#undef SUBTARGET_CPU_DEFAULT
-#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
+/* TARGET_BIG_ENDIAN_DEFAULT is set in
+ config.gcc for big endian configurations. */
+#undef TARGET_LINKER_EMULATION
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define TARGET_LINKER_EMULATION "armelfb_linux_eabi"
+#else
+#define TARGET_LINKER_EMULATION "armelf_linux_eabi"
+#endif
+
+#undef SUBTARGET_EXTRA_LINK_SPEC
+#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
+
+/* GNU/Linux on ARM currently supports three dynamic linkers:
+ - ld-linux.so.2 - for the legacy ABI
+ - ld-linux.so.3 - for the EABI-derived soft-float ABI
+ - ld-linux-armhf.so.3 - for the EABI-derived hard-float ABI.
+ All the dynamic linkers live in /lib.
+ We default to soft-float, but this can be overridden by changing both
+ GLIBC_DYNAMIC_LINKER_DEFAULT and TARGET_DEFAULT_FLOAT_ABI. */
-#undef SUBTARGET_EXTRA_LINK_SPEC
-#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
+#undef GLIBC_DYNAMIC_LINKER
+#define GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "/lib/ld-linux.so.3"
+#define GLIBC_DYNAMIC_LINKER_HARD_FLOAT "/lib/ld-linux-armhf.so.3"
+#define GLIBC_DYNAMIC_LINKER_DEFAULT GLIBC_DYNAMIC_LINKER_SOFT_FLOAT
-/* Use ld-linux.so.3 so that it will be possible to run "classic"
- GNU/Linux binaries on an EABI system. */
-#undef GLIBC_DYNAMIC_LINKER
-#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+#define GLIBC_DYNAMIC_LINKER \
+ "%{mfloat-abi=hard:" GLIBC_DYNAMIC_LINKER_HARD_FLOAT "} \
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+
+/* For ARM musl currently supports four dynamic linkers:
+ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
+ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
+ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
+ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
+ musl does not support the legacy OABI mode.
+ All the dynamic linkers live in /lib.
+ We default to soft-float, EL. */
+#undef MUSL_DYNAMIC_LINKER
+#if TARGET_BIG_ENDIAN_DEFAULT
+#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
+#else
+#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
+#endif
+#define MUSL_DYNAMIC_LINKER \
+ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}%{mfdpic:-fdpic}.so.1"
/* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
use the GNU/Linux version, not the generic BPABI version. */
-#undef LINK_SPEC
-#define LINK_SPEC LINUX_TARGET_LINK_SPEC
+#undef LINK_SPEC
+#define LINK_SPEC EABI_LINK_SPEC \
+ LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC, \
+ LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+
+#undef ASAN_CC1_SPEC
+#define ASAN_CC1_SPEC "%{%:sanitize(address):-funwind-tables}"
+
+#define FDPIC_CC1_SPEC ""
+
+#undef CC1_SPEC
+#define CC1_SPEC \
+ LINUX_OR_ANDROID_CC (GNU_USER_TARGET_CC1_SPEC " " ASAN_CC1_SPEC " " \
+ FDPIC_CC1_SPEC, \
+ GNU_USER_TARGET_CC1_SPEC " " ASAN_CC1_SPEC " " \
+ ANDROID_CC1_SPEC)
+
+#define CC1PLUS_SPEC \
+ LINUX_OR_ANDROID_CC ("", ANDROID_CC1PLUS_SPEC)
+
+#undef LIB_SPEC
+#define LIB_SPEC \
+ LINUX_OR_ANDROID_LD (GNU_USER_TARGET_LIB_SPEC, \
+ GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC " " ANDROID_LIB_SPEC)
+
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC \
+ LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+ "%{Ofast|ffast-math|funsafe-math-optimizations:crtfastmath.o%s} " \
+ LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
/* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
do not use -lfloat. */
#undef LIBGCC_SPEC
-/* Clear the instruction cache from `beg' to `end'. This makes an
- inline system call to SYS_cacheflush. It is modified to work with
- both the original and EABI-only syscall interfaces. */
-#undef CLEAR_INSN_CACHE
-#define CLEAR_INSN_CACHE(BEG, END) \
-{ \
- register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
- register unsigned long _end __asm ("a2") = (unsigned long) (END); \
- register unsigned long _flg __asm ("a3") = 0; \
- register unsigned long _scno __asm ("r7") = 0xf0002; \
- __asm __volatile ("swi 0x9f0002 @ sys_cacheflush" \
- : "=r" (_beg) \
- : "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno)); \
-}
+/* Clear the instruction cache from `beg' to `end'. This is
+ implemented in lib1funcs.S, so ensure an error if this definition
+ is used. */
+#undef CLEAR_INSN_CACHE
+#define CLEAR_INSN_CACHE(BEG, END) not_used
+
+#define ARM_TARGET2_DWARF_FORMAT (DW_EH_PE_pcrel | DW_EH_PE_indirect)
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