1 /* Definitions for MIPS varients running FreeBSD with ELF format 2 Copyright (C) 2008 Free Software Foundation, Inc. 3 Continued by David O'Brien <obrien@freebsd.org> 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 /* $FreeBSD$ */ 23 24 /* This defines which switch letters take arguments. -G is a MIPS 25 special. */ 26 27 #undef SWITCH_TAKES_ARG 28 #define SWITCH_TAKES_ARG(CHAR) \ 29 (FBSD_SWITCH_TAKES_ARG (CHAR) \ 30 || (CHAR) == 'R' \ 31 || (CHAR) == 'G') 32 33 #undef SUBTARGET_EXTRA_SPECS /* mips.h bogusly defines it. */ 34 #define SUBTARGET_EXTRA_SPECS \ 35 { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER}, \ 36 { "fbsd_link_spec", FBSD_LINK_SPEC } 37 38 /* config/mips/mips.h defines CC1_SPEC, 39 but gives us an "out" with SUBTARGET_CC1_SPEC. */ 40 #undef SUBTARGET_CC1_SPEC 41 #define SUBTARGET_CC1_SPEC "%{profile:-p}" 42 43 /* Provide a LINK_SPEC appropriate for FreeBSD. Here we provide support 44 for the special GCC options -static and -shared, which allow us to 45 link things in one of these three modes by applying the appropriate 46 combinations of options at link-time. We like to support here for 47 as many of the other GNU linker options as possible. But I don't 48 have the time to search for those flags. I am sure how to add 49 support for -soname shared_object_name. H.J. 50 51 When the -shared link option is used a final link is not being 52 done. */ 53 54 #define FBSD_LINK_SPEC "\ 55 %{p:%nconsider using `-pg' instead of `-p' with gprof(1) } \ 56 %{v:-V} \ 57 %{assert*} %{R*} %{rpath*} %{defsym*} \ 58 %{shared:-Bshareable %{h*} %{soname*}} \ 59 %{!static:--enable-new-dtags} \ 60 %{!shared: \ 61 %{!static: \ 62 %{rdynamic: -export-dynamic} \ 63 %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \ 64 %{static:-Bstatic}} \ 65 %{symbolic:-Bsymbolic} " 66 67 #undef LINK_SPEC 68 #define LINK_SPEC "\ 69 %{EB} %{EL} %(endian_spec) \ 70 %{G*} %{mips1} %{mips2} %{mips3} %{mips4} \ 71 %{mips32} %{mips32r2} %{mips64} %{mips64r2} \ 72 %{bestGnum} %{call_shared} %{no_archive} %{exact_version} \ 73 %{mabi=32:-melf32%{EB:b}%{EL:l}tsmip_fbsd} \ 74 %{mabi=n32:-melf32%{EB:b}%{EL:l}tsmipn32_fbsd} \ 75 %{mabi=64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \ 76 %{mabi=o64:-melf64%{EB:b}%{EL:l}tsmip_fbsd} \ 77 %(fbsd_link_spec)" 78 79 #undef LINK_GCC_C_SEQUENCE_SPEC 80 #define LINK_GCC_C_SEQUENCE_SPEC \ 81 "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}" 82 83 /* Reset our STARTFILE_SPEC which was properly set in config/freebsd.h 84 but trashed by config/mips/elf.h. */ 85 #undef STARTFILE_SPEC 86 #define STARTFILE_SPEC FBSD_STARTFILE_SPEC 87 88 /* Provide an ENDFILE_SPEC appropriate for FreeBSD/mips. */ 89 #undef ENDFILE_SPEC 90 #define ENDFILE_SPEC FBSD_ENDFILE_SPEC 91 92 /* Reset our LIB_SPEC which was properly set in config/freebsd.h 93 but trashed by config/mips/elf.h. */ 94 #undef LIB_SPEC 95 #define LIB_SPEC FBSD_LIB_SPEC 96 97 /* config/mips/mips.h defines CPP_SPEC, and it expects SUBTARGET_CPP_SPEC. */ 98 #undef SUBTARGET_CPP_SPEC 99 #define SUBTARGET_CPP_SPEC FBSD_CPP_SPEC 100 101 102 /************************[ Target stuff ]***********************************/ 103 104 /* Define the actual types of some ANSI-mandated types. 105 Needs to agree with <machine/ansi.h>. GCC defaults come from c-decl.c, 106 c-common.c, and config/<arch>/<arch>.h. */ 107 108 #undef TARGET_DEFAULT 109 #define TARGET_DEFAULT (MASK_ABICALLS | MASK_SOFT_FLOAT) 110 111 #if TARGET_ENDIAN_DEFAULT != 0 112 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mips)"); 113 #else 114 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/mipsel)"); 115 #endif 116 117 /* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for FreeBSD. 118 Specifically, they define too many namespace-invasive macros. Override 119 them here. Note this is structured for easy comparison to the version 120 in mips.h. */ 121 122 #undef TARGET_CPU_CPP_BUILTINS 123 #define TARGET_CPU_CPP_BUILTINS() \ 124 do \ 125 { \ 126 builtin_assert ("machine=mips"); \ 127 builtin_assert ("cpu=mips"); \ 128 builtin_define ("__mips__"); \ 129 \ 130 if (TARGET_64BIT) \ 131 builtin_define ("__mips64"); \ 132 \ 133 if (TARGET_FLOAT64) \ 134 builtin_define ("__mips_fpr=64"); \ 135 else \ 136 builtin_define ("__mips_fpr=32"); \ 137 \ 138 if (TARGET_MIPS16) \ 139 builtin_define ("__mips16"); \ 140 \ 141 if (mips_abi == ABI_N32) \ 142 { \ 143 builtin_define ("__mips_n32"); \ 144 builtin_define ("_ABIN32=2"); \ 145 builtin_define ("_MIPS_SIM=_ABIN32"); \ 146 builtin_define ("_MIPS_SZLONG=32"); \ 147 builtin_define ("_MIPS_SZPTR=32"); \ 148 } \ 149 else if (mips_abi == ABI_64) \ 150 { \ 151 builtin_define ("__mips_n64"); \ 152 builtin_define ("_ABI64=3"); \ 153 builtin_define ("_MIPS_SIM=_ABI64"); \ 154 builtin_define ("_MIPS_SZLONG=64"); \ 155 builtin_define ("_MIPS_SZPTR=64"); \ 156 } \ 157 else if (mips_abi == ABI_O64) \ 158 { \ 159 builtin_define ("__mips_o64"); \ 160 builtin_define ("_ABIO64=4"); \ 161 builtin_define ("_MIPS_SIM=_ABIO64"); \ 162 builtin_define ("_MIPS_SZLONG=64"); \ 163 builtin_define ("_MIPS_SZPTR=64"); \ 164 } \ 165 else if (mips_abi == ABI_EABI) \ 166 { \ 167 builtin_define ("__mips_eabi"); \ 168 builtin_define ("_ABIEMB=5"); \ 169 builtin_define ("_MIPS_SIM=_ABIEMB"); \ 170 if (TARGET_LONG64) \ 171 builtin_define ("_MIPS_SZLONG=64"); \ 172 else \ 173 builtin_define ("_MIPS_SZLONG=32"); \ 174 if (TARGET_64BIT) \ 175 builtin_define ("_MIPS_SZPTR=64"); \ 176 else \ 177 builtin_define ("_MIPS_SZPTR=32"); \ 178 } \ 179 else \ 180 { \ 181 builtin_define ("__mips_o32"); \ 182 builtin_define ("_ABIO32=1"); \ 183 builtin_define ("_MIPS_SIM=_ABIO32"); \ 184 builtin_define ("_MIPS_SZLONG=32"); \ 185 builtin_define ("_MIPS_SZPTR=32"); \ 186 } \ 187 if (TARGET_FLOAT64) \ 188 builtin_define ("_MIPS_FPSET=32"); \ 189 else \ 190 builtin_define ("_MIPS_FPSET=16"); \ 191 \ 192 builtin_define ("_MIPS_SZINT=32"); \ 193 \ 194 MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info); \ 195 MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info); \ 196 \ 197 if (ISA_MIPS1) \ 198 { \ 199 builtin_define ("__mips=1"); \ 200 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS1"); \ 201 } \ 202 else if (ISA_MIPS2) \ 203 { \ 204 builtin_define ("__mips=2"); \ 205 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS2"); \ 206 } \ 207 else if (ISA_MIPS3) \ 208 { \ 209 builtin_define ("__mips=3"); \ 210 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS3"); \ 211 } \ 212 else if (ISA_MIPS4) \ 213 { \ 214 builtin_define ("__mips=4"); \ 215 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS4"); \ 216 } \ 217 else if (ISA_MIPS32) \ 218 { \ 219 builtin_define ("__mips=32"); \ 220 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \ 221 builtin_define ("__mips_isa_rev=1"); \ 222 } \ 223 else if (ISA_MIPS32R2) \ 224 { \ 225 builtin_define ("__mips=32"); \ 226 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS32"); \ 227 builtin_define ("__mips_isa_rev=2"); \ 228 } \ 229 else if (ISA_MIPS64) \ 230 { \ 231 builtin_define ("__mips=64"); \ 232 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \ 233 builtin_define ("__mips_isa_rev=1"); \ 234 } \ 235 else if (ISA_MIPS64R2) \ 236 { \ 237 builtin_define ("__mips=64"); \ 238 builtin_define ("_MIPS_ISA=_MIPS_ISA_MIPS64"); \ 239 builtin_define ("__mips_isa_rev=2"); \ 240 } \ 241 \ 242 if (TARGET_HARD_FLOAT) \ 243 builtin_define ("__mips_hard_float"); \ 244 else if (TARGET_SOFT_FLOAT) \ 245 builtin_define ("__mips_soft_float"); \ 246 \ 247 if (TARGET_SINGLE_FLOAT) \ 248 builtin_define ("__mips_single_float"); \ 249 \ 250 if (TARGET_BIG_ENDIAN) \ 251 builtin_define ("__MIPSEB__"); \ 252 else \ 253 builtin_define ("__MIPSEL__"); \ 254 \ 255 /* No language dialect defines. */ \ 256 if (TARGET_ABICALLS) \ 257 builtin_define ("__ABICALLS__"); \ 258 } \ 259 while (0) 260 261 /* Default ABI and ISA */ 262 /* 263 * XXX/juli 264 * Shouldn't this also be dependent on !mips*? 265 */ 266 #ifdef MIPS_CPU_STRING_DEFAULT 267 #define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=" MIPS_CPU_STRING_DEFAULT "}" 268 #else 269 #define DRIVER_SELF_ISA_SPEC "%{!march=*: -march=from-abi}" 270 #endif 271 272 #undef DRIVER_SELF_SPECS 273 #if MIPS_ABI_DEFAULT == ABI_N32 274 #define DRIVER_SELF_SPECS \ 275 "%{!EB:%{!EL:%(endian_spec)}}", \ 276 "%{!mabi=*: -mabi=n32}", \ 277 DRIVER_SELF_ISA_SPEC 278 #elif MIPS_ABI_DEFAULT == ABI_64 279 #define DRIVER_SELF_SPECS \ 280 "%{!EB:%{!EL:%(endian_spec)}}", \ 281 "%{!mabi=*: -mabi=64}", \ 282 DRIVER_SELF_ISA_SPEC 283 #elif MIPS_ABI_DEFAULT == ABI_O64 284 #define DRIVER_SELF_SPECS \ 285 "%{!EB:%{!EL:%(endian_spec)}}", \ 286 "%{!mabi=*: -mabi=o64}", \ 287 DRIVER_SELF_ISA_SPEC 288 #else /* default to o32 */ 289 #define DRIVER_SELF_SPECS \ 290 "%{!EB:%{!EL:%(endian_spec)}}", \ 291 "%{!mabi=*: -mabi=32}", \ 292 DRIVER_SELF_ISA_SPEC 293 #endif 294 295 #if 0 296 /* Don't default to pcc-struct-return, we want to retain compatibility with 297 older gcc versions AND pcc-struct-return is nonreentrant. 298 (even though the SVR4 ABI for the i386 says that records and unions are 299 returned in memory). */ 300 301 #undef DEFAULT_PCC_STRUCT_RETURN 302 #define DEFAULT_PCC_STRUCT_RETURN 0 303 #endif 304 305 306 /************************[ Assembler stuff ]********************************/ 307 308 #undef SUBTARGET_ASM_SPEC 309 #define SUBTARGET_ASM_SPEC \ 310 "%{!mno-abicalls: %{!fno-PIC:%{!fno-pic:-KPIC}}}" 311 312 /* -G is incompatible with -KPIC which is the default, so only allow objects 313 in the small data section if the user explicitly asks for it. */ 314 315 #undef MIPS_DEFAULT_GVALUE 316 #define MIPS_DEFAULT_GVALUE 0 317 318 /* If defined, a C expression whose value is a string containing the 319 assembler operation to identify the following data as 320 uninitialized global data. If not defined, and neither 321 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, 322 uninitialized global data will be output in the data section if 323 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be 324 used. */ 325 #undef BSS_SECTION_ASM_OP 326 #define BSS_SECTION_ASM_OP "\t.section\t.bss" 327 328 /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a 329 separate, explicit argument. If you define this macro, it is used 330 in place of `ASM_OUTPUT_BSS', and gives you more flexibility in 331 handling the required alignment of the variable. The alignment is 332 specified as the number of bits. 333 334 Try to use function `asm_output_aligned_bss' defined in file 335 `varasm.c' when defining this macro. */ 336 #undef ASM_OUTPUT_ALIGNED_BSS 337 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 338 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 339 340 /* Standard AT&T UNIX 'as' local label spelling. */ 341 #undef LOCAL_LABEL_PREFIX 342 #define LOCAL_LABEL_PREFIX "." 343 344 /* Currently we don't support 128bit long doubles, so for now we force 345 n32 to be 64bit. */ 346 #undef LONG_DOUBLE_TYPE_SIZE 347 #define LONG_DOUBLE_TYPE_SIZE 64 348 349 #ifdef IN_LIBGCC2 350 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE 351 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 352 #endif 353 354 /************************[ Debugger stuff ]*********************************/ 355 #undef DBX_DEBUGGING_INFO 356 #undef MIPS_DEBUGGING_INFO 357