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/* Definitions for ARM EABI ucLinux

   Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.

   Contributed by Paul Brook <paul@codesourcery.com>

   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/>.  */

/* Override settings that are different to the uclinux-elf or

   bpabi defaults.  */

#undef  TARGET_DEFAULT

#define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE | MASK_INTERWORK)

/* On EABI GNU/Linux, we want both the BPABI builtins and the

   GNU/Linux builtins.  */

#undef TARGET_OS_CPP_BUILTINS

#define TARGET_OS_CPP_BUILTINS()                \

  do                                            \

    {                                           \

      TARGET_BPABI_CPP_BUILTINS();              \

      builtin_define ("__uClinux__");           \

      builtin_define ("__gnu_linux__");         \

      builtin_define_std ("linux");             \

      builtin_define_std ("unix");              \

      builtin_assert ("system=linux");          \

      builtin_assert ("system=unix");           \

      builtin_assert ("system=posix");          \

    }                                           \

  while (false)

#undef SUBTARGET_EXTRA_LINK_SPEC

#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi -elf2flt" \

  " --pic-veneer --target2=abs"

/* We default to the "aapcs-linux" ABI so that enums are int-sized by

   default.  */

#undef ARM_DEFAULT_ABI

#define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX

/* Clear the instruction cache from `beg' to `end'.  This makes an

   inline system call to SYS_cacheflush.  */

#undef CLEAR_INSN_CACHE

#define CLEAR_INSN_CACHE(BEG, END)                                      \

{                                                                       \

  register unsigned long _beg __asm ("a1") = (unsigned long) (BEG);     \

  register unsigned long _end __asm ("a2") = (unsigned long) (END);     \

  register unsigned long _flg __asm ("a3") = 0;                          \

  register unsigned long _scno __asm ("r7") = 0xf0002;                  \

  __asm __volatile ("swi 0x0            @ sys_cacheflush"               \

                    : "=r" (_beg)                                       \

                    : "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno));  \

}