gcc/config/arm/linux-gas.h

   1 /* Definitions of target machine for GNU compiler.
   2    ARM Linux-based GNU systems version.
   3    Copyright (C) 1997, 1998 Free Software Foundation, Inc.
   4    Contributed by Russell King  <rmk92@ecs.soton.ac.uk>.
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU CC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 /*
  24  * We are using GAS, so stabs should work.
  25  */
  26
  27 #ifndef DBX_DEBUGGING_INFO
  28 #define DBX_DEBUGGING_INFO 1
  29 #endif
  30
  31 /*
  32  * This is how we tell the assembler that a symbol is weak.  GAS always
  33  * supports weak symbols.
  34  */
  35
  36 #define ASM_WEAKEN_LABEL(FILE,NAME) \
  37   do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
  38        fputc ('\n', FILE); } while (0)
  39
  40 /* This is used in ASM_FILE_START */
  41 #undef  ARM_OS_NAME
  42 #define ARM_OS_NAME "Linux"
  43
  44 /* Unsigned chars produces much better code than signed.  */
  45 #define DEFAULT_SIGNED_CHAR 0
  46
  47 #undef  SUBTARGET_CPP_SPEC
  48 #define SUBTARGET_CPP_SPEC  "%{posix:-D_POSIX_SOURCE} %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__}"
  49
  50 #undef  SIZE_TYPE
  51 #define SIZE_TYPE "unsigned int"
  52
  53 #undef  PTRDIFF_TYPE
  54 #define PTRDIFF_TYPE "int"
  55
  56 #undef  WCHAR_TYPE
  57 #define WCHAR_TYPE "long int"
  58
  59 #undef  WCHAR_TYPE_SIZE
  60 #define WCHAR_TYPE_SIZE BITS_PER_WORD
  61
  62 #if 0           /* not yet */
  63
  64 /* Clear the instruction cache from `beg' to `end'.  This makes an
  65    inline system call to SYS_cacheflush.  The arguments are as
  66    follows:
  67
  68         cacheflush (start, end, flags)
  69
  70 */
  71
  72 #define CLEAR_INSN_CACHE(BEG, END)                                      \
  73 {                                                                       \
  74   register unsigned long _beg __asm ("a1") = (unsigned long) (BEG);     \
  75   register unsigned long _end __asm ("a2") = (unsigned long) (END);     \
  76   register unsigned long _flg __asm ("a3") = 0;                         \
  77   __asm __volatile ("swi 0x9000b8");                                    \
  78 }
  79
  80 #endif
  81
  82 /* If cross-compiling, don't require stdio.h etc to build libgcc.a.  */
  83 #ifdef CROSS_COMPILE
  84 #ifndef inhibit_libc
  85 #define inhibit_libc
  86 #endif
  87 #endif