gcc/config/mips/netbsd.h

   1 /* Definitions of target machine for GNU compiler, for MIPS NetBSD systems.
   2    Copyright (C) 1993, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004,
   3    2007, 2010, 2011 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21
  22 /* Define default target values.  */
  23
  24 #define TARGET_OS_CPP_BUILTINS()                        \
  25   do                                                    \
  26     {                                                   \
  27       NETBSD_OS_CPP_BUILTINS_ELF();                     \
  28       builtin_define ("__NO_LEADING_UNDERSCORES__");    \
  29       builtin_define ("__GP_SUPPORT__");                \
  30       if (TARGET_LONG64)                                \
  31         builtin_define ("__LONG64");                    \
  32                                                         \
  33       if (TARGET_ABICALLS)                              \
  34         builtin_define ("__ABICALLS__");                \
  35                                                         \
  36       if (mips_abi == ABI_EABI)                         \
  37         builtin_define ("__mips_eabi");                 \
  38       else if (mips_abi == ABI_N32)                     \
  39         builtin_define ("__mips_n32");                  \
  40       else if (mips_abi == ABI_64)                      \
  41         builtin_define ("__mips_n64");                  \
  42       else if (mips_abi == ABI_O64)                     \
  43         builtin_define ("__mips_o64");                  \
  44     }                                                   \
  45   while (0)
  46
  47 /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for NetBSD.
  48    Specifically, they define too many namespace-invasive macros.  Override
  49    them here.  Note this is structured for easy comparison to the version
  50    in mips.h.
  51
  52    FIXME: This probably isn't the best solution.  But in the absence
  53    of something better, it will have to do, for now.  */
  54
  55 #undef TARGET_CPU_CPP_BUILTINS
  56 #define TARGET_CPU_CPP_BUILTINS()                               \
  57   do                                                            \
  58     {                                                           \
  59       builtin_assert ("cpu=mips");                              \
  60       builtin_define ("__mips__");                              \
  61       builtin_define ("_mips");                                 \
  62                                                                 \
  63       /* No _R3000 or _R4000.  */                               \
  64       if (TARGET_64BIT)                                         \
  65         builtin_define ("__mips64");                            \
  66                                                                 \
  67       if (TARGET_FLOAT64)                                       \
  68         builtin_define ("__mips_fpr=64");                       \
  69       else                                                      \
  70         builtin_define ("__mips_fpr=32");                       \
  71                                                                 \
  72       if (TARGET_MIPS16)                                        \
  73         builtin_define ("__mips16");                            \
  74                                                                 \
  75       MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info);    \
  76       MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info);    \
  77                                                                 \
  78       if (ISA_MIPS1)                                            \
  79         builtin_define ("__mips=1");                            \
  80       else if (ISA_MIPS2)                                       \
  81         builtin_define ("__mips=2");                            \
  82       else if (ISA_MIPS3)                                       \
  83         builtin_define ("__mips=3");                            \
  84       else if (ISA_MIPS4)                                       \
  85         builtin_define ("__mips=4");                            \
  86       else if (ISA_MIPS32)                                      \
  87         {                                                       \
  88           builtin_define ("__mips=32");                         \
  89           builtin_define ("__mips_isa_rev=1");                  \
  90         }                                                       \
  91       else if (ISA_MIPS32R2)                                    \
  92         {                                                       \
  93           builtin_define ("__mips=32");                         \
  94           builtin_define ("__mips_isa_rev=2");                  \
  95         }                                                       \
  96       else if (ISA_MIPS64)                                      \
  97         {                                                       \
  98           builtin_define ("__mips=64");                         \
  99           builtin_define ("__mips_isa_rev=1");                  \
 100         }                                                       \
 101                                                                 \
 102       if (TARGET_HARD_FLOAT)                                    \
 103         builtin_define ("__mips_hard_float");                   \
 104       else if (TARGET_SOFT_FLOAT)                               \
 105         builtin_define ("__mips_soft_float");                   \
 106                                                                 \
 107       if (TARGET_SINGLE_FLOAT)                                  \
 108         builtin_define ("__mips_single_float");                 \
 109                                                                 \
 110       if (TARGET_BIG_ENDIAN)                                    \
 111         builtin_define ("__MIPSEB__");                          \
 112       else                                                      \
 113         builtin_define ("__MIPSEL__");                          \
 114                                                                 \
 115       /* No language dialect defines.  */                       \
 116                                                                 \
 117       /* ABIs handled in TARGET_OS_CPP_BUILTINS.  */            \
 118     }                                                           \
 119   while (0)
 120
 121
 122 /* Extra specs we need.  */
 123 #undef SUBTARGET_EXTRA_SPECS
 124 #define SUBTARGET_EXTRA_SPECS                                           \
 125   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC },                      \
 126   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF },                 \
 127   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 128
 129 /* Provide a SUBTARGET_CPP_SPEC appropriate for NetBSD.  */
 130
 131 #undef SUBTARGET_CPP_SPEC
 132 #define SUBTARGET_CPP_SPEC "%(netbsd_cpp_spec)"
 133
 134 /* Provide a LINK_SPEC appropriate for a NetBSD/mips target.
 135    This is a copy of LINK_SPEC from <netbsd-elf.h> tweaked for
 136    the MIPS target.  */
 137
 138 #undef LINK_SPEC
 139 #define LINK_SPEC \
 140   "%{EL:-m elf32lmip} \
 141    %{EB:-m elf32bmip} \
 142    %(endian_spec) \
 143    %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \
 144    %(netbsd_link_spec)"
 145
 146 #define NETBSD_ENTRY_POINT "__start"
 147
 148 #undef SUBTARGET_ASM_SPEC
 149 #define SUBTARGET_ASM_SPEC \
 150   "%{!mno-abicalls: \
 151      %{!fno-PIC:%{!fno-pic:-KPIC}}}"
 152
 153
 154 /* -G is incompatible with -KPIC which is the default, so only allow objects
 155    in the small data section if the user explicitly asks for it.  */
 156
 157 #undef MIPS_DEFAULT_GVALUE
 158 #define MIPS_DEFAULT_GVALUE 0
 159
 160
 161 #undef ASM_FINAL_SPEC
 162 #undef SET_ASM_OP
 163
 164
 165 /* NetBSD hasn't historically provided _flush_cache(), but rather
 166    _cacheflush(), which takes the same arguments as the former.  */
 167 #undef CACHE_FLUSH_FUNC
 168 #define CACHE_FLUSH_FUNC "_cacheflush"
 169
 170
 171 /* Make gcc agree with <machine/ansi.h> */
 172
 173 #undef WCHAR_TYPE
 174 #define WCHAR_TYPE "int"
 175
 176 #undef WCHAR_TYPE_SIZE
 177 #define WCHAR_TYPE_SIZE 32
 178
 179 #undef WINT_TYPE
 180 #define WINT_TYPE "int"