gcc/config/arc/elf.h

/* Target macros for arc*-elf targets.

   Copyright (C) 2017-2021 Free Software Foundation, Inc.

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.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#undef DWARF2_UNWIND_INFO
#define DWARF2_UNWIND_INFO 0

#undef LINK_SPEC
#define LINK_SPEC "%{mbig-endian:-EB} %{EB} %{EL}"

#define ARC_TLS_EXTRA_START_SPEC "crttls.o%s"

#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
  { "arc_tls_extra_start_spec", ARC_TLS_EXTRA_START_SPEC }, \

#undef STARTFILE_SPEC
#define STARTFILE_SPEC "%{pg|p:gcrt0.o%s}%{!pg:%{!p:crt0.o%s}} crti%O%s " \
  "%(arc_tls_extra_start_spec) crtbegin.o%s"

#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend.o%s crtn%O%s"

/* Leave the linker script to choose the appropriate libraries.  */
#undef LIB_SPEC
#define LIB_SPEC ""

/* SDATA default for elf.  */
#undef TARGET_SDATA_DEFAULT
#define TARGET_SDATA_DEFAULT 1

/* We no medium calls.  */
#undef TARGET_MMEDIUM_CALLS_DEFAULT
#define TARGET_MMEDIUM_CALLS_DEFAULT 0

#ifdef ARC_MULTILIB_CPU_DEFAULT
# ifndef MULTILIB_DEFAULTS
#  define MULTILIB_DEFAULTS { "mcpu=" ARC_MULTILIB_CPU_DEFAULT }
# endif
#endif

/* Bare-metal toolchains do not need a thread pointer register.  */
#undef TARGET_ARC_TP_REGNO_DEFAULT
#define TARGET_ARC_TP_REGNO_DEFAULT -1

/* Indexed loads are default.  */
#undef TARGET_INDEXED_LOADS_DEFAULT
#define TARGET_INDEXED_LOADS_DEFAULT 1

/* Pre/post modify with register displacement are default.  */
#undef TARGET_AUTO_MODIFY_REG_DEFAULT
#define TARGET_AUTO_MODIFY_REG_DEFAULT 1

/* Build attribute: procedure call standard.  */
#undef ATTRIBUTE_PCS
#define ATTRIBUTE_PCS 2

#undef TARGET_ASM_FILE_END
#define TARGET_ASM_FILE_END arc_file_end

/* If no specs file is enforced, default to nosys libarary.  */
#undef LINK_GCC_C_SEQUENCE_SPEC
#define LINK_GCC_C_SEQUENCE_SPEC				\
  "--start-group %G %{!specs=*:%{!nolibc:-lc -lnosys}} --end-group"

/* Emit rtl for profiling.  Output assembler code to FILE
   to call "_mcount" for profiling a function entry.  */
#define PROFILE_HOOK(LABEL)					\
  {								\
    rtx fun;							\
    fun = gen_rtx_SYMBOL_REF (Pmode, "__mcount");		\
    emit_library_call (fun, LCT_NORMAL, VOIDmode);		\
  }

/* Enter/Leave default value.  */
#undef TARGET_CODE_DENSITY_FRAME_DEFAULT
#define TARGET_CODE_DENSITY_FRAME_DEFAULT 0