| /* Definitions for ARM running Linux-based GNU systems using ELF |
| Copyright (C) 1993-2020 Free Software Foundation, Inc. |
| Contributed by Philip Blundell <philb@gnu.org> |
| |
| 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 3, or (at your |
| option) any later version. |
| |
| GCC 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 General Public |
| License for more details. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* elfos.h should have already been included. Now just override |
| any conflicting definitions and add any extras. */ |
| |
| /* Run-time Target Specification. */ |
| #undef TARGET_DEFAULT_FLOAT_ABI |
| #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD |
| |
| /* TARGET_BIG_ENDIAN_DEFAULT is set in |
| config.gcc for big endian configurations. */ |
| #if TARGET_BIG_ENDIAN_DEFAULT |
| #define TARGET_ENDIAN_DEFAULT MASK_BIG_END |
| #define TARGET_ENDIAN_OPTION "mbig-endian" |
| #define TARGET_LINKER_EMULATION "armelfb_linux" |
| #else |
| #define TARGET_ENDIAN_DEFAULT 0 |
| #define TARGET_ENDIAN_OPTION "mlittle-endian" |
| #define TARGET_LINKER_EMULATION "armelf_linux" |
| #endif |
| |
| #undef TARGET_DEFAULT |
| #define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT) |
| |
| #define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p" |
| |
| /* We do not have any MULTILIB_OPTIONS specified, so there are no |
| MULTILIB_DEFAULTS. */ |
| #undef MULTILIB_DEFAULTS |
| |
| /* Now we define the strings used to build the spec file. */ |
| #undef LIB_SPEC |
| #define LIB_SPEC \ |
| "%{pthread:-lpthread} \ |
| %{shared:-lc} \ |
| %{!shared:%{profile:-lc_p}%{!profile:-lc}}" |
| |
| #define LIBGCC_SPEC "%{mfloat-abi=soft*:-lfloat} -lgcc" |
| |
| #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2" |
| |
| #define LINUX_TARGET_LINK_SPEC "%{h*} \ |
| %{static:-Bstatic} \ |
| %{shared:-shared} \ |
| %{symbolic:-Bsymbolic} \ |
| %{!static: \ |
| %{rdynamic:-export-dynamic} \ |
| %{!shared:-dynamic-linker " GNU_USER_DYNAMIC_LINKER "}} \ |
| -X \ |
| %{mbig-endian:-EB} %{mlittle-endian:-EL}" \ |
| SUBTARGET_EXTRA_LINK_SPEC |
| |
| #undef LINK_SPEC |
| #define LINK_SPEC LINUX_TARGET_LINK_SPEC |
| |
| #define TARGET_OS_CPP_BUILTINS() \ |
| do \ |
| { \ |
| GNU_USER_TARGET_OS_CPP_BUILTINS(); \ |
| } \ |
| while (0) |
| |
| /* Call the function profiler with a given profile label. */ |
| #undef ARM_FUNCTION_PROFILER |
| #define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \ |
| { \ |
| fprintf (STREAM, "\tbl\tmcount%s\n", \ |
| (TARGET_ARM && NEED_PLT_RELOC) ? "(PLT)" : ""); \ |
| } |
| |
| /* The GNU/Linux profiler clobbers the link register. Make sure the |
| prologue knows to save it. */ |
| #define PROFILE_HOOK(X) \ |
| emit_clobber (gen_rtx_REG (SImode, LR_REGNUM)) |
| |
| /* The GNU/Linux profiler needs a frame pointer. */ |
| #define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile |
| |
| /* Add .note.GNU-stack. */ |
| #undef NEED_INDICATE_EXEC_STACK |
| #define NEED_INDICATE_EXEC_STACK 1 |
| |
| /* Uninitialized common symbols in non-PIE executables, even with |
| strong definitions in dependent shared libraries, will resolve |
| to COPY relocated symbol in the executable. See PR65780. */ |
| #undef TARGET_BINDS_LOCAL_P |
| #define TARGET_BINDS_LOCAL_P default_binds_local_p_2 |
| |
| /* Define this to be nonzero if static stack checking is supported. */ |
| #define STACK_CHECK_STATIC_BUILTIN 1 |