gcc/config/rtems.h

   1 /* Configuration common to all targets running RTEMS.
   2    Copyright (C) 2000-2024 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published
   8    by the Free Software Foundation; either version 3, or (at your
   9    option) any later version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    Under Section 7 of GPL version 3, you are granted additional
  17    permissions described in the GCC Runtime Library Exception, version
  18    3.1, as published by the Free Software Foundation.
  19
  20    You should have received a copy of the GNU General Public License and
  21    a copy of the GCC Runtime Library Exception along with this program;
  22    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23    <http://www.gnu.org/licenses/>.  */
  24
  25 #ifndef RTEMS_STARTFILE_SPEC
  26 #define RTEMS_STARTFILE_SPEC "crti%O%s crtbegin%O%s"
  27 #endif
  28
  29 #ifndef RTEMS_ENDFILE_SPEC
  30 #define RTEMS_ENDFILE_SPEC "crtend%O%s crtn%O%s"
  31 #endif
  32
  33 /*
  34  * The crt0.o is a dummy start file to let the linker work as needed by
  35  * autoconf scripts using this compiler.
  36  */
  37 #undef STARTFILE_SPEC
  38 #define STARTFILE_SPEC "%{!qrtems:crt0%O%s} " \
  39 "%{qrtems:" RTEMS_STARTFILE_SPEC "}"
  40
  41 #undef ENDFILE_SPEC
  42 #define ENDFILE_SPEC \
  43 "%{qrtems:" RTEMS_ENDFILE_SPEC " %{!qnolinkcmds:-T linkcmds%s}}"
  44
  45 /*
  46  * Some targets do not set up LIB_SPECS, override it, here.
  47  */
  48 #define STD_LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
  49
  50 #undef LIB_SPEC
  51 #define LIB_SPEC "%{!qrtems:" STD_LIB_SPEC "} " \
  52 "%{qrtems:--start-group -lrtemsbsp -lrtemscpu -latomic -lc -lgcc --end-group}"
  53
  54 #define TARGET_POSIX_IO
  55
  56 #define TARGET_HAVE_LIBATOMIC true
  57
  58 /* Prefer int for int32_t (see stdint-newlib.h).  */
  59 #undef STDINT_LONG32
  60 #define STDINT_LONG32 (INT_TYPE_SIZE != 32 && LONG_TYPE_SIZE == 32)
  61
  62 /* Default to local-exec TLS model.  */
  63 #undef OS_CC1_SPEC
  64 #define OS_CC1_SPEC " %{!ftls-model=*:-ftls-model=local-exec}"