gcc/config/mips/netbsd.h

   1 /* Definitions of target machine for GNU compiler, for MIPS NetBSD systems.
   2    Copyright (C) 1993-2013 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* Define default target values.  */
  22
  23 #define TARGET_OS_CPP_BUILTINS()                        \
  24   do                                                    \
  25     {                                                   \
  26       NETBSD_OS_CPP_BUILTINS_ELF();                     \
  27       builtin_define ("__NO_LEADING_UNDERSCORES__");    \
  28       builtin_define ("__GP_SUPPORT__");                \
  29       if (TARGET_LONG64)                                \
  30         builtin_define ("__LONG64");                    \
  31                                                         \
  32       if (TARGET_ABICALLS)                              \
  33         builtin_define ("__ABICALLS__");                \
  34                                                         \
  35       if (mips_abi == ABI_EABI)                         \
  36         builtin_define ("__mips_eabi");                 \
  37       else if (mips_abi == ABI_N32)                     \
  38         builtin_define ("__mips_n32");                  \
  39       else if (mips_abi == ABI_64)                      \
  40         builtin_define ("__mips_n64");                  \
  41       else if (mips_abi == ABI_O64)                     \
  42         builtin_define ("__mips_o64");                  \
  43     }                                                   \
  44   while (0)
  45
  46 /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for NetBSD.
  47    Specifically, they define too many namespace-invasive macros.  Override
  48    them here.  Note this is structured for easy comparison to the version
  49    in mips.h.
  50
  51    FIXME: This probably isn't the best solution.  But in the absence
  52    of something better, it will have to do, for now.  */
  53
  54 #undef TARGET_CPU_CPP_BUILTINS
  55 #define TARGET_CPU_CPP_BUILTINS()                               \
  56   do                                                            \
  57     {                                                           \
  58       builtin_assert ("cpu=mips");                              \
  59       builtin_define ("__mips__");                              \
  60       builtin_define ("_mips");                                 \
  61                                                                 \
  62       /* No _R3000 or _R4000.  */                               \
  63       if (TARGET_64BIT)                                         \
  64         builtin_define ("__mips64");                            \
  65                                                                 \
  66       if (TARGET_FLOAT64)                                       \
  67         builtin_define ("__mips_fpr=64");                       \
  68       else                                                      \
  69         builtin_define ("__mips_fpr=32");                       \
  70                                                                 \
  71       if (TARGET_MIPS16)                                        \
  72         builtin_define ("__mips16");                            \
  73                                                                 \
  74       MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info);    \
  75       MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info);    \
  76                                                                 \
  77       if (ISA_MIPS1)                                            \
  78         builtin_define ("__mips=1");                            \
  79       else if (ISA_MIPS2)                                       \
  80         builtin_define ("__mips=2");                            \
  81       else if (ISA_MIPS3)                                       \
  82         builtin_define ("__mips=3");                            \
  83       else if (ISA_MIPS4)                                       \
  84         builtin_define ("__mips=4");                            \
  85       else if (ISA_MIPS32)                                      \
  86         {                                                       \
  87           builtin_define ("__mips=32");                         \
  88           builtin_define ("__mips_isa_rev=1");                  \
  89         }                                                       \
  90       else if (ISA_MIPS32R2)                                    \
  91         {                                                       \
  92           builtin_define ("__mips=32");                         \
  93           builtin_define ("__mips_isa_rev=2");                  \
  94         }                                                       \
  95       else if (ISA_MIPS64)                                      \
  96         {                                                       \
  97           builtin_define ("__mips=64");                         \
  98           builtin_define ("__mips_isa_rev=1");                  \
  99         }                                                       \
 100                                                                 \
 101       if (TARGET_HARD_FLOAT)                                    \
 102         builtin_define ("__mips_hard_float");                   \
 103       else if (TARGET_SOFT_FLOAT)                               \
 104         builtin_define ("__mips_soft_float");                   \
 105                                                                 \
 106       if (TARGET_SINGLE_FLOAT)                                  \
 107         builtin_define ("__mips_single_float");                 \
 108                                                                 \
 109       if (TARGET_BIG_ENDIAN)                                    \
 110         builtin_define ("__MIPSEB__");                          \
 111       else                                                      \
 112         builtin_define ("__MIPSEL__");                          \
 113                                                                 \
 114       /* No language dialect defines.  */                       \
 115                                                                 \
 116       /* ABIs handled in TARGET_OS_CPP_BUILTINS.  */            \
 117     }                                                           \
 118   while (0)
 119
 120
 121 /* Extra specs we need.  */
 122 #undef SUBTARGET_EXTRA_SPECS
 123 #define SUBTARGET_EXTRA_SPECS                                           \
 124   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC },                      \
 125   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF },                 \
 126   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 127
 128 /* Provide a SUBTARGET_CPP_SPEC appropriate for NetBSD.  */
 129
 130 #undef SUBTARGET_CPP_SPEC
 131 #define SUBTARGET_CPP_SPEC "%(netbsd_cpp_spec)"
 132
 133 /* Provide a LINK_SPEC appropriate for a NetBSD/mips target.
 134    This is a copy of LINK_SPEC from <netbsd-elf.h> tweaked for
 135    the MIPS target.  */
 136
 137 #undef LINK_SPEC
 138 #define LINK_SPEC \
 139   "%{EL:-m elf32lmip} \
 140    %{EB:-m elf32bmip} \
 141    %(endian_spec) \
 142    %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \
 143    %(netbsd_link_spec)"
 144
 145 #define NETBSD_ENTRY_POINT "__start"
 146
 147 #undef SUBTARGET_ASM_SPEC
 148 #define SUBTARGET_ASM_SPEC \
 149   "%{!mno-abicalls: \
 150      %{!fno-PIC:%{!fno-pic:-KPIC}}}"
 151
 152
 153 /* -G is incompatible with -KPIC which is the default, so only allow objects
 154    in the small data section if the user explicitly asks for it.  */
 155
 156 #undef MIPS_DEFAULT_GVALUE
 157 #define MIPS_DEFAULT_GVALUE 0
 158
 159
 160 #undef ASM_FINAL_SPEC
 161 #undef SET_ASM_OP
 162
 163
 164 /* NetBSD hasn't historically provided _flush_cache(), but rather
 165    _cacheflush(), which takes the same arguments as the former.  */
 166 #undef CACHE_FLUSH_FUNC
 167 #define CACHE_FLUSH_FUNC "_cacheflush"
 168
 169
 170 /* Make gcc agree with <machine/ansi.h> */
 171
 172 #undef WCHAR_TYPE
 173 #define WCHAR_TYPE "int"
 174
 175 #undef WCHAR_TYPE_SIZE
 176 #define WCHAR_TYPE_SIZE 32
 177
 178 #undef WINT_TYPE
 179 #define WINT_TYPE "int"