release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/lib/gcc/arm-brcm-linux-uclibcgnueabi/4.5.3/plugin/include/config/arm/linux-elf.h

   1 /* Definitions for ARM running Linux-based GNU systems using ELF
   2    Copyright (C) 1993, 1994, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   3    2005, 2006, 2007, 2008
   4    Free Software Foundation, Inc.
   5    Contributed by Philip Blundell <philb@gnu.org>
   6
   7    This file is part of GCC.
   8
   9    GCC is free software; you can redistribute it and/or modify it
  10    under the terms of the GNU General Public License as published
  11    by the Free Software Foundation; either version 3, or (at your
  12    option) any later version.
  13
  14    GCC is distributed in the hope that it will be useful, but WITHOUT
  15    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  16    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  17    License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with GCC; see the file COPYING3.  If not see
  21    <http://www.gnu.org/licenses/>.  */
  22
  23 /* elfos.h should have already been included.  Now just override
  24    any conflicting definitions and add any extras.  */
  25
  26 /* Run-time Target Specification.  */
  27 #undef  TARGET_VERSION
  28 #define TARGET_VERSION  fputs (" (ARM GNU/Linux with ELF)", stderr);
  29
  30 #undef  TARGET_DEFAULT_FLOAT_ABI
  31 #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
  32
  33 /* TARGET_BIG_ENDIAN_DEFAULT is set in
  34    config.gcc for big endian configurations.  */
  35 #if TARGET_BIG_ENDIAN_DEFAULT
  36 #define TARGET_ENDIAN_DEFAULT    MASK_BIG_END
  37 #define TARGET_ENDIAN_OPTION     "mbig-endian"
  38 #define TARGET_LINKER_EMULATION  "armelfb_linux"
  39 #else
  40 #define TARGET_ENDIAN_DEFAULT    0
  41 #define TARGET_ENDIAN_OPTION     "mlittle-endian"
  42 #define TARGET_LINKER_EMULATION  "armelf_linux"
  43 #endif
  44
  45 #undef  TARGET_DEFAULT
  46 #define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
  47
  48 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
  49
  50 #define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
  51
  52 #undef  MULTILIB_DEFAULTS
  53 #define MULTILIB_DEFAULTS \
  54         { "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
  55
  56 /* Now we define the strings used to build the spec file.  */
  57 #undef  LIB_SPEC
  58 #define LIB_SPEC \
  59   "%{pthread:-lpthread} \
  60    %{shared:-lc} \
  61    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
  62
  63 #define LIBGCC_SPEC "-lgcc"
  64
  65 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
  66
  67 #define LINUX_TARGET_LINK_SPEC  "%{h*} %{version:-v} \
  68    %{b} \
  69    %{static:-Bstatic} \
  70    %{shared:-shared} \
  71    %{symbolic:-Bsymbolic} \
  72    %{rdynamic:-export-dynamic} \
  73    %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "} \
  74    -X \
  75    %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
  76    SUBTARGET_EXTRA_LINK_SPEC
  77
  78 #undef  LINK_SPEC
  79 #define LINK_SPEC LINUX_TARGET_LINK_SPEC
  80
  81 #define TARGET_OS_CPP_BUILTINS()                \
  82   do                                            \
  83     {                                           \
  84         LINUX_TARGET_OS_CPP_BUILTINS();         \
  85     }                                           \
  86   while (0)
  87
  88 /* This is how we tell the assembler that two symbols have the same value.  */
  89 #define ASM_OUTPUT_DEF(FILE, NAME1, NAME2) \
  90   do                                       \
  91     {                                      \
  92       assemble_name (FILE, NAME1);         \
  93       fputs (" = ", FILE);                 \
  94       assemble_name (FILE, NAME2);         \
  95       fputc ('\n', FILE);                  \
  96     }                                      \
  97   while (0)
  98
  99 /* NWFPE always understands FPA instructions.  */
 100 #undef  FPUTYPE_DEFAULT
 101 #define FPUTYPE_DEFAULT "fpe3"
 102
 103 /* Call the function profiler with a given profile label.  */
 104 #undef  ARM_FUNCTION_PROFILER
 105 #define ARM_FUNCTION_PROFILER(STREAM, LABELNO)                          \
 106 {                                                                       \
 107   fprintf (STREAM, "\tbl\tmcount%s\n",                                  \
 108            (TARGET_ARM && NEED_PLT_RELOC) ? "(PLT)" : "");              \
 109 }
 110
 111 /* The GNU/Linux profiler clobbers the link register.  Make sure the
 112    prologue knows to save it.  */
 113 #define PROFILE_HOOK(X)                                         \
 114   emit_clobber (gen_rtx_REG (SImode, LR_REGNUM))
 115
 116 /* The GNU/Linux profiler needs a frame pointer.  */
 117 #define SUBTARGET_FRAME_POINTER_REQUIRED crtl->profile
 118
 119 /* Add .note.GNU-stack.  */
 120 #undef NEED_INDICATE_EXEC_STACK
 121 #define NEED_INDICATE_EXEC_STACK        1