| /* Definitions of target machine for GNU compiler. |
| ARM Linux-based GNU systems version. |
| Copyright (C) 1997, 1998, 1999, 2000, 2001, 2004 |
| Free Software Foundation, Inc. |
| Contributed by Russell King <rmk92@ecs.soton.ac.uk>. |
| |
| 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 2, 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 this program; see the file COPYING. If not, write to |
| the Free Software Foundation, 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| /* This is how we tell the assembler that a symbol is weak. |
| GAS always supports weak symbols. */ |
| |
| /* Unsigned chars produces much better code than signed. */ |
| #define DEFAULT_SIGNED_CHAR 0 |
| |
| #undef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE}" |
| |
| #undef SIZE_TYPE |
| #define SIZE_TYPE "unsigned int" |
| |
| #undef PTRDIFF_TYPE |
| #define PTRDIFF_TYPE "int" |
| |
| #undef WCHAR_TYPE |
| #define WCHAR_TYPE "long int" |
| |
| #undef WCHAR_TYPE_SIZE |
| #define WCHAR_TYPE_SIZE BITS_PER_WORD |
| |
| /* Emit code to set up a trampoline and synchronize the caches. */ |
| #undef INITIALIZE_TRAMPOLINE |
| #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ |
| { \ |
| emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 8)), \ |
| (CXT)); \ |
| emit_move_insn (gen_rtx_MEM (SImode, plus_constant ((TRAMP), 12)), \ |
| (FNADDR)); \ |
| emit_library_call (gen_rtx_SYMBOL_REF (Pmode, "__clear_cache"), \ |
| 0, VOIDmode, 2, TRAMP, Pmode, \ |
| plus_constant (TRAMP, TRAMPOLINE_SIZE), Pmode); \ |
| } |
| |
| /* Clear the instruction cache from `beg' to `end'. This makes an |
| inline system call to SYS_cacheflush. */ |
| #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; \ |
| __asm __volatile ("swi 0x9f0002 @ sys_cacheflush" \ |
| : "=r" (_beg) \ |
| : "0" (_beg), "r" (_end), "r" (_flg)); \ |
| } |