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/elf.h

   1 /* Definitions of target machine for GNU compiler.
   2    For ARM with ELF obj format.
   3    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2004, 2005, 2007,
   4    2008 Free Software Foundation, Inc.
   5    Contributed by Philip Blundell <philb@gnu.org> and
   6    Catherine Moore <clm@cygnus.com>
   7
   8    This file is part of GCC.
   9
  10    GCC is free software; you can redistribute it and/or modify it
  11    under the terms of the GNU General Public License as published
  12    by the Free Software Foundation; either version 3, or (at your
  13    option) any later version.
  14
  15    GCC is distributed in the hope that it will be useful, but WITHOUT
  16    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  17    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  18    License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with GCC; see the file COPYING3.  If not see
  22    <http://www.gnu.org/licenses/>.  */
  23
  24 #ifndef OBJECT_FORMAT_ELF
  25  #error elf.h included before elfos.h
  26 #endif
  27
  28 #ifndef LOCAL_LABEL_PREFIX
  29 #define LOCAL_LABEL_PREFIX "."
  30 #endif
  31
  32 #ifndef SUBTARGET_CPP_SPEC
  33 #define SUBTARGET_CPP_SPEC  "-D__ELF__"
  34 #endif
  35
  36 #ifndef SUBTARGET_EXTRA_SPECS
  37 #define SUBTARGET_EXTRA_SPECS \
  38   { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \
  39   { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \
  40   SUBSUBTARGET_EXTRA_SPECS
  41 #endif
  42
  43 #ifndef SUBTARGET_EXTRA_ASM_SPEC
  44 #define SUBTARGET_EXTRA_ASM_SPEC ""
  45 #endif
  46
  47 #ifndef SUBTARGET_ASM_FLOAT_SPEC
  48 #define SUBTARGET_ASM_FLOAT_SPEC "\
  49 %{mapcs-float:-mfloat}"
  50 #endif
  51
  52 #undef SUBSUBTARGET_EXTRA_SPECS
  53 #define SUBSUBTARGET_EXTRA_SPECS
  54
  55 #ifndef ASM_SPEC
  56 #define ASM_SPEC "\
  57 %{mbig-endian:-EB} \
  58 %{mlittle-endian:-EL} \
  59 %{mcpu=*:-mcpu=%*} \
  60 %{march=*:-march=%*} \
  61 %{mapcs-*:-mapcs-%*} \
  62 %(subtarget_asm_float_spec) \
  63 %{mthumb-interwork:-mthumb-interwork} \
  64 %{msoft-float:-mfloat-abi=soft} %{mhard-float:-mfloat-abi=hard} \
  65 %{mfloat-abi=*} %{mfpu=*} \
  66 %(subtarget_extra_asm_spec)"
  67 #endif
  68
  69 /* The ARM uses @ are a comment character so we need to redefine
  70    TYPE_OPERAND_FMT.  */
  71 #undef  TYPE_OPERAND_FMT
  72 #define TYPE_OPERAND_FMT        "%%%s"
  73
  74 /* We might need a ARM specific header to function declarations.  */
  75 #undef  ASM_DECLARE_FUNCTION_NAME
  76 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
  77   do                                                            \
  78     {                                                           \
  79       ARM_DECLARE_FUNCTION_NAME (FILE, NAME, DECL);             \
  80       ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");       \
  81       ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));            \
  82       ASM_OUTPUT_LABEL(FILE, NAME);                             \
  83       ARM_OUTPUT_FN_UNWIND (FILE, TRUE);                        \
  84     }                                                           \
  85   while (0)
  86
  87 /* We might need an ARM specific trailer for function declarations.  */
  88 #undef  ASM_DECLARE_FUNCTION_SIZE
  89 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)            \
  90   do                                                            \
  91     {                                                           \
  92       ARM_OUTPUT_FN_UNWIND (FILE, FALSE);                       \
  93       if (!flag_inhibit_size_directive)                         \
  94         ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                 \
  95     }                                                           \
  96   while (0)
  97
  98 /* Define this macro if jump tables (for `tablejump' insns) should be
  99    output in the text section, along with the assembler instructions.
 100    Otherwise, the readonly data section is used.  */
 101 /* We put ARM and Thumb-2 jump tables in the text section, because it makes
 102    the code more efficient, but for Thumb-1 it's better to put them out of
 103    band unless we are generating compressed tables.  */
 104 #define JUMP_TABLES_IN_TEXT_SECTION                                     \
 105    (TARGET_32BIT || (TARGET_THUMB && (optimize_size || flag_pic)))
 106
 107 #ifndef LINK_SPEC
 108 #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X"
 109 #endif
 110
 111 /* Run-time Target Specification.  */
 112 #ifndef TARGET_VERSION
 113 #define TARGET_VERSION fputs (" (ARM/elf)", stderr)
 114 #endif
 115
 116 #ifndef TARGET_DEFAULT
 117 #define TARGET_DEFAULT (MASK_APCS_FRAME)
 118 #endif
 119
 120 #ifndef MULTILIB_DEFAULTS
 121 #define MULTILIB_DEFAULTS \
 122   { "marm", "mlittle-endian", "msoft-float", "mno-thumb-interwork", "fno-leading-underscore" }
 123 #endif
 124 \f
 125 #define TARGET_ASM_FILE_START_APP_OFF true
 126 #define TARGET_ASM_FILE_START_FILE_DIRECTIVE true
 127 \f
 128
 129 /* Output an element in the static constructor array.  */
 130 #undef TARGET_ASM_CONSTRUCTOR
 131 #define TARGET_ASM_CONSTRUCTOR arm_elf_asm_constructor
 132
 133 #undef TARGET_ASM_DESTRUCTOR
 134 #define TARGET_ASM_DESTRUCTOR arm_elf_asm_destructor
 135
 136 /* For PIC code we need to explicitly specify (PLT) and (GOT) relocs.  */
 137 #define NEED_PLT_RELOC  flag_pic
 138 #define NEED_GOT_RELOC  flag_pic
 139
 140 /* The ELF assembler handles GOT addressing differently to NetBSD.  */
 141 #define GOT_PCREL       0
 142
 143 /* Align output to a power of two.  Note ".align 0" is redundant,
 144    and also GAS will treat it as ".align 2" which we do not want.  */
 145 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 146   do                                                    \
 147     {                                                   \
 148       if ((POWER) > 0)                                  \
 149         fprintf (STREAM, "\t.align\t%d\n", POWER);      \
 150     }                                                   \
 151   while (0)
 152
 153 /* Horrible hack: We want to prevent some libgcc routines being included
 154    for some multilibs.  */
 155 #ifndef __ARM_ARCH_6M__
 156 #undef L_fixdfsi
 157 #undef L_fixunsdfsi
 158 #undef L_truncdfsf2
 159 #undef L_fixsfsi
 160 #undef L_fixunssfsi
 161 #undef L_floatdidf
 162 #undef L_floatdisf
 163 #undef L_floatundidf
 164 #undef L_floatundisf
 165 #endif
 166