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 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 2, 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 COPYING. If not, write to 19 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. */ 21 22 23 /* Define default target values. */ 24 25 #undef MACHINE_TYPE 26 #if TARGET_ENDIAN_DEFAULT != 0 27 #define MACHINE_TYPE "NetBSD/mipseb ELF" 28 #else 29 #define MACHINE_TYPE "NetBSD/mipsel ELF" 30 #endif 31 32 #define TARGET_OS_CPP_BUILTINS() \ 33 do \ 34 { \ 35 NETBSD_OS_CPP_BUILTINS_ELF(); \ 36 builtin_define ("__NO_LEADING_UNDERSCORES__"); \ 37 builtin_define ("__GP_SUPPORT__"); \ 38 if (TARGET_LONG64) \ 39 builtin_define ("__LONG64"); \ 40 \ 41 if (TARGET_ABICALLS) \ 42 builtin_define ("__ABICALLS__"); \ 43 \ 44 if (mips_abi == ABI_EABI) \ 45 builtin_define ("__mips_eabi"); \ 46 else if (mips_abi == ABI_N32) \ 47 builtin_define ("__mips_n32"); \ 48 else if (mips_abi == ABI_64) \ 49 builtin_define ("__mips_n64"); \ 50 else if (mips_abi == ABI_O64) \ 51 builtin_define ("__mips_o64"); \ 52 } \ 53 while (0) 54 55 /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for NetBSD. 56 Specifically, they define too many namespace-invasive macros. Override 57 them here. Note this is structured for easy comparison to the version 58 in mips.h. 59 60 FIXME: This probably isn't the best solution. But in the absence 61 of something better, it will have to do, for now. */ 62 63 #undef TARGET_CPU_CPP_BUILTINS 64 #define TARGET_CPU_CPP_BUILTINS() \ 65 do \ 66 { \ 67 builtin_assert ("cpu=mips"); \ 68 builtin_define ("__mips__"); \ 69 builtin_define ("_mips"); \ 70 \ 71 /* No _R3000 or _R4000. */ \ 72 if (TARGET_64BIT) \ 73 builtin_define ("__mips64"); \ 74 \ 75 if (TARGET_FLOAT64) \ 76 builtin_define ("__mips_fpr=64"); \ 77 else \ 78 builtin_define ("__mips_fpr=32"); \ 79 \ 80 if (TARGET_MIPS16) \ 81 builtin_define ("__mips16"); \ 82 \ 83 MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \ 84 MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \ 85 \ 86 if (ISA_MIPS1) \ 87 builtin_define ("__mips=1"); \ 88 else if (ISA_MIPS2) \ 89 builtin_define ("__mips=2"); \ 90 else if (ISA_MIPS3) \ 91 builtin_define ("__mips=3"); \ 92 else if (ISA_MIPS4) \ 93 builtin_define ("__mips=4"); \ 94 else if (ISA_MIPS32) \ 95 { \ 96 builtin_define ("__mips=32"); \ 97 builtin_define ("__mips_isa_rev=1"); \ 98 } \ 99 else if (ISA_MIPS32R2) \ 100 { \ 101 builtin_define ("__mips=32"); \ 102 builtin_define ("__mips_isa_rev=2"); \ 103 } \ 104 else if (ISA_MIPS64) \ 105 { \ 106 builtin_define ("__mips=64"); \ 107 builtin_define ("__mips_isa_rev=1"); \ 108 } \ 109 \ 110 if (TARGET_HARD_FLOAT) \ 111 builtin_define ("__mips_hard_float"); \ 112 else if (TARGET_SOFT_FLOAT) \ 113 builtin_define ("__mips_soft_float"); \ 114 \ 115 if (TARGET_SINGLE_FLOAT) \ 116 builtin_define ("__mips_single_float"); \ 117 \ 118 if (TARGET_BIG_ENDIAN) \ 119 builtin_define ("__MIPSEB__"); \ 120 else \ 121 builtin_define ("__MIPSEL__"); \ 122 \ 123 /* No language dialect defines. */ \ 124 \ 125 /* ABIs handled in TARGET_OS_CPP_BUILTINS. */ \ 126 } \ 127 while (0) 128 129 130 /* Clean up after the generic MIPS/ELF configuration. */ 131 #undef MD_EXEC_PREFIX 132 #undef MD_STARTFILE_PREFIX 133 134 /* Extra specs we need. */ 135 #undef SUBTARGET_EXTRA_SPECS 136 #define SUBTARGET_EXTRA_SPECS \ 137 { "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \ 138 { "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \ 139 { "netbsd_entry_point", NETBSD_ENTRY_POINT }, 140 141 /* Provide a SUBTARGET_CPP_SPEC appropriate for NetBSD. */ 142 143 #undef SUBTARGET_CPP_SPEC 144 #define SUBTARGET_CPP_SPEC "%(netbsd_cpp_spec)" 145 146 /* Provide a LINK_SPEC appropriate for a NetBSD/mips target. 147 This is a copy of LINK_SPEC from <netbsd-elf.h> tweaked for 148 the MIPS target. */ 149 150 #undef LINK_SPEC 151 #define LINK_SPEC \ 152 "%{EL:-m elf32lmip} \ 153 %{EB:-m elf32bmip} \ 154 %(endian_spec) \ 155 %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} %{mips64} \ 156 %{bestGnum} %{call_shared} %{no_archive} %{exact_version} \ 157 %(netbsd_link_spec)" 158 159 #define NETBSD_ENTRY_POINT "__start" 160 161 #undef SUBTARGET_ASM_SPEC 162 #define SUBTARGET_ASM_SPEC \ 163 "%{!mno-abicalls: \ 164 %{!fno-PIC:%{!fno-pic:-KPIC}}}" 165 166 167 /* -G is incompatible with -KPIC which is the default, so only allow objects 168 in the small data section if the user explicitly asks for it. */ 169 170 #undef MIPS_DEFAULT_GVALUE 171 #define MIPS_DEFAULT_GVALUE 0 172 173 174 /* This defines which switch letters take arguments. -G is a MIPS 175 special. */ 176 177 #undef SWITCH_TAKES_ARG 178 #define SWITCH_TAKES_ARG(CHAR) \ 179 (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ 180 || (CHAR) == 'R' \ 181 || (CHAR) == 'G') 182 183 184 #undef ASM_FINAL_SPEC 185 #undef SET_ASM_OP 186 187 188 /* NetBSD hasn't historically provided _flush_cache(), but rather 189 _cacheflush(), which takes the same arguments as the former. */ 190 #undef CACHE_FLUSH_FUNC 191 #define CACHE_FLUSH_FUNC "_cacheflush" 192 193 194 /* Make gcc agree with <machine/ansi.h> */ 195 196 #undef WCHAR_TYPE 197 #define WCHAR_TYPE "int" 198 199 #undef WCHAR_TYPE_SIZE 200 #define WCHAR_TYPE_SIZE 32 201 202 #undef WINT_TYPE 203 #define WINT_TYPE "int" 204