/* Configuration file for ARM GNU/Linux EABI targets.
- Copyright (C) 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 2004-2020 Free Software Foundation, Inc.
Contributed by CodeSourcery, LLC
This file is part of GCC.
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. */
+ 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
#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
#undef SUBTARGET_EXTRA_LINK_SPEC
#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
-/* Use ld-linux.so.3 so that it will be possible to run "classic"
- GNU/Linux binaries on an EABI system. */
+/* 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 GLIBC_DYNAMIC_LINKER
-#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
+#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
+
+#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 BE8_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 (LINUX_TARGET_CC1_SPEC, \
- LINUX_TARGET_CC1_SPEC " " ANDROID_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 (LINUX_TARGET_LIB_SPEC, \
- LINUX_TARGET_LIB_SPEC " " ANDROID_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 (LINUX_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
+ LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
- LINUX_OR_ANDROID_LD (LINUX_TARGET_ENDFILE_SPEC, ANDROID_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 is
- implemented in lib1funcs.asm, so ensure an error if this definition
+ 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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