gcc/config/mips/netbsd.h

   1 /* Definitions of target machine for GNU compiler, for MIPS NetBSD systems.
   2    Copyright (C) 1993-2022 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_32)                           \
  36         builtin_define ("__mips_o32");                  \
  37       else if (mips_abi == ABI_EABI)                    \
  38         builtin_define ("__mips_eabi");                 \
  39       else if (mips_abi == ABI_N32)                     \
  40         builtin_define ("__mips_n32");                  \
  41       else if (mips_abi == ABI_64)                      \
  42         builtin_define ("__mips_n64");                  \
  43       else if (mips_abi == ABI_O64)                     \
  44         builtin_define ("__mips_o64");                  \
  45     }                                                   \
  46   while (0)
  47
  48 /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for NetBSD.
  49    Specifically, they define too many namespace-invasive macros.  Override
  50    them here.  Note this is structured for easy comparison to the version
  51    in mips.h.
  52
  53    FIXME: This probably isn't the best solution.  But in the absence
  54    of something better, it will have to do, for now.  */
  55
  56 #undef TARGET_CPU_CPP_BUILTINS
  57 #define TARGET_CPU_CPP_BUILTINS()                               \
  58   do                                                            \
  59     {                                                           \
  60       builtin_assert ("cpu=mips");                              \
  61       builtin_define ("__mips__");                              \
  62       builtin_define ("_mips");                                 \
  63                                                                 \
  64       /* No _R3000 or _R4000.  */                               \
  65       if (TARGET_64BIT)                                         \
  66         builtin_define ("__mips64");                            \
  67                                                                 \
  68       if (TARGET_FLOAT64)                                       \
  69         builtin_define ("__mips_fpr=64");                       \
  70       else                                                      \
  71         builtin_define ("__mips_fpr=32");                       \
  72                                                                 \
  73       if (TARGET_MIPS16)                                        \
  74         builtin_define ("__mips16");                            \
  75                                                                 \
  76       MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info);    \
  77       MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info);    \
  78                                                                 \
  79       if (ISA_MIPS1)                                            \
  80         builtin_define ("__mips=1");                            \
  81       else if (ISA_MIPS2)                                       \
  82         builtin_define ("__mips=2");                            \
  83       else if (ISA_MIPS3)                                       \
  84         builtin_define ("__mips=3");                            \
  85       else if (ISA_MIPS4)                                       \
  86         builtin_define ("__mips=4");                            \
  87       else if (mips_isa >= MIPS_ISA_MIPS32                      \
  88                && mips_isa < MIPS_ISA_MIPS64)                   \
  89         builtin_define ("__mips=32");                           \
  90       else if (mips_isa >= MIPS_ISA_MIPS64)                     \
  91         builtin_define ("__mips=64");                           \
  92       if (mips_isa_rev > 0)                                     \
  93         builtin_define_with_int_value ("__mips_isa_rev",        \
  94                                        mips_isa_rev);           \
  95                                                                 \
  96       if (TARGET_HARD_FLOAT)                                    \
  97         builtin_define ("__mips_hard_float");                   \
  98       else if (TARGET_SOFT_FLOAT)                               \
  99         builtin_define ("__mips_soft_float");                   \
 100                                                                 \
 101       if (TARGET_SINGLE_FLOAT)                                  \
 102         builtin_define ("__mips_single_float");                 \
 103                                                                 \
 104       if (TARGET_BIG_ENDIAN)                                    \
 105         builtin_define ("__MIPSEB__");                          \
 106       else                                                      \
 107         builtin_define ("__MIPSEL__");                          \
 108                                                                 \
 109       /* No language dialect defines.  */                       \
 110                                                                 \
 111       /* ABIs handled in TARGET_OS_CPP_BUILTINS.  */            \
 112     }                                                           \
 113   while (0)
 114
 115
 116 /* Extra specs we need.  */
 117 #undef SUBTARGET_EXTRA_SPECS
 118 #define SUBTARGET_EXTRA_SPECS                                           \
 119   { "netbsd_cpp_spec",          NETBSD_CPP_SPEC },                      \
 120   { "netbsd_link_spec",         NETBSD_LINK_SPEC_ELF },                 \
 121   { "netbsd_entry_point",       NETBSD_ENTRY_POINT },
 122
 123 /* Provide a SUBTARGET_CPP_SPEC appropriate for NetBSD.  */
 124
 125 #undef SUBTARGET_CPP_SPEC
 126 #define SUBTARGET_CPP_SPEC "%(netbsd_cpp_spec)"
 127
 128 /* Provide a LINK_SPEC appropriate for a NetBSD/mips target.
 129    This is a copy of LINK_SPEC from <netbsd-elf.h> tweaked for
 130    the MIPS target.  */
 131
 132 #undef LINK_SPEC
 133 #define LINK_SPEC \
 134   "%{EL:-m elf32lmip} \
 135    %{EB:-m elf32bmip} \
 136    %(endian_spec) \
 137    %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} \
 138    %{mips32r6} %{mips64} %{mips64r6} \
 139    %(netbsd_link_spec)"
 140
 141 #define NETBSD_ENTRY_POINT "__start"
 142
 143 #undef SUBTARGET_ASM_SPEC
 144 #define SUBTARGET_ASM_SPEC \
 145   "%{!mno-abicalls: \
 146      %{!fno-PIC:%{!fno-pic:-KPIC}}}"
 147
 148
 149 /* -G is incompatible with -KPIC which is the default, so only allow objects
 150    in the small data section if the user explicitly asks for it.  */
 151
 152 #undef MIPS_DEFAULT_GVALUE
 153 #define MIPS_DEFAULT_GVALUE 0
 154
 155
 156 #undef ASM_FINAL_SPEC
 157 #undef SET_ASM_OP
 158
 159
 160 /* NetBSD hasn't historically provided _flush_cache(), but rather
 161    _cacheflush(), which takes the same arguments as the former.  */
 162 #undef CACHE_FLUSH_FUNC
 163 #define CACHE_FLUSH_FUNC "_cacheflush"
 164
 165
 166 /* Make gcc agree with <machine/ansi.h> */
 167
 168 #undef WCHAR_TYPE
 169 #define WCHAR_TYPE "int"
 170
 171 #undef WCHAR_TYPE_SIZE
 172 #define WCHAR_TYPE_SIZE 32
 173
 174 #undef WINT_TYPE
 175 #define WINT_TYPE "int"