gcc/config/arm/uclinux-eabi.h

   1 /* Definitions for ARM EABI ucLinux
   2    Copyright (C) 2006 Free Software Foundation, Inc.
   3    Contributed by Paul Brook <paul@codesourcery.com>
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 2, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; see the file COPYING.  If not, write to
  19    the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 /* Override settings that are different to the uclinux-elf or
  23    bpabi defaults.  */
  24
  25 #undef  TARGET_DEFAULT
  26 #define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE | MASK_INTERWORK)
  27
  28 /* On EABI GNU/Linux, we want both the BPABI builtins and the
  29    GNU/Linux builtins.  */
  30 #undef TARGET_OS_CPP_BUILTINS
  31 #define TARGET_OS_CPP_BUILTINS()                \
  32   do                                            \
  33     {                                           \
  34       TARGET_BPABI_CPP_BUILTINS();              \
  35       builtin_define ("__uClinux__");           \
  36       builtin_define ("__gnu_linux__");         \
  37       builtin_define_std ("linux");             \
  38       builtin_define_std ("unix");              \
  39       builtin_assert ("system=linux");          \
  40       builtin_assert ("system=unix");           \
  41       builtin_assert ("system=posix");          \
  42     }                                           \
  43   while (false)
  44
  45 #undef SUBTARGET_EXTRA_LINK_SPEC
  46 #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
  47
  48 /* We default to the "aapcs-linux" ABI so that enums are int-sized by
  49    default.  */
  50 #undef ARM_DEFAULT_ABI
  51 #define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
  52
  53 /* Clear the instruction cache from `beg' to `end'.  This makes an
  54    inline system call to SYS_cacheflush.  */
  55 #undef CLEAR_INSN_CACHE
  56 #define CLEAR_INSN_CACHE(BEG, END)                                      \
  57 {                                                                       \
  58   register unsigned long _beg __asm ("a1") = (unsigned long) (BEG);     \
  59   register unsigned long _end __asm ("a2") = (unsigned long) (END);     \
  60   register unsigned long _flg __asm ("a3") = 0;                         \
  61   register unsigned long _scno __asm ("r7") = 0xf0002;                  \
  62   __asm __volatile ("swi 0x0            @ sys_cacheflush"               \
  63                     : "=r" (_beg)                                       \
  64                     : "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno)); \
  65 }
  66