gcc/config/mips/iris6.h

   1 /* Definitions of target machine for GNU compiler.  Iris version 6.
   2    Copyright (C) 1994, 1995, 1996, 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC 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 2, or (at your option)
   9 any later version.
  10
  11 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* Default to -mabi=n32 and -mips3.  */
  22 #define MIPS_ISA_DEFAULT 3
  23 #define MIPS_ABI_DEFAULT ABI_N32
  24 #define MULTILIB_DEFAULTS { "mabi=n32" }
  25
  26 #ifndef TARGET_DEFAULT
  27 #define TARGET_DEFAULT (MASK_ABICALLS|MASK_FLOAT64|MASK_64BIT)
  28 #endif
  29
  30 #include "mips/iris5.h"
  31 #include "mips/abi64.h"
  32
  33 /* Irix6 assembler does handle DWARF2 directives.  Override setting in
  34  irix5.h file.  */
  35 #undef DWARF2_UNWIND_INFO
  36
  37 /* The Irix6 assembler will sometimes assign labels to the wrong
  38    section unless the labels are within .ent/.end blocks.  Therefore,
  39    we avoid creating such labels.  */
  40 #define DWARF2_GENERATE_TEXT_SECTION_LABEL 0
  41
  42 /* For Irix 6, -mabi=64 implies TARGET_LONG64.  */
  43 /* This is handled in override_options.  */
  44
  45 #undef SUBTARGET_CC1_SPEC
  46 #define SUBTARGET_CC1_SPEC ""
  47
  48 /* We must pass -D_LONGLONG always, even when -ansi is used, because irix6
  49    system header files require it.  This is OK, because gcc never warns
  50    when long long is used in system header files.  Alternatively, we can
  51    add support for the SGI builtin type __long_long.  */
  52 #undef CPP_PREDEFINES
  53 #define CPP_PREDEFINES \
  54  "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
  55   -D_LONGLONG -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
  56   -Asystem=unix -Asystem=svr4 -Acpu=mips -Amachine=sgi"
  57
  58 #undef SUBTARGET_CPP_SIZE_SPEC
  59 #define SUBTARGET_CPP_SIZE_SPEC "\
  60 %{mabi=32: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
  61 %{mabi=n32: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int} \
  62 %{mabi=64: -D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int} \
  63 %{!mabi*: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int}"
  64
  65 /* We must make -mips3 do what -mlong64 used to do.  */
  66 /* ??? If no mipsX option given, but a mabi=X option is, then should set
  67    _MIPS_ISA based on the mabi=X option.  */
  68 /* ??? If no mabi=X option give, but a mipsX option is, then should set
  69    _MIPS_SIM based on the mipsX option.  */
  70 /* ??? Same for _MIPS_SZINT.  */
  71 /* ??? Same for _MIPS_SZPTR.  */
  72 /* ??? Same for __SIZE_TYPE and __PTRDIFF_TYPE.  */
  73 #undef SUBTARGET_CPP_SPEC
  74 #define SUBTARGET_CPP_SPEC "\
  75 %{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE} \
  76 %{mfp32: -D_MIPS_FPSET=16}%{!mfp32: -D_MIPS_FPSET=32} \
  77 %{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
  78 %{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
  79 %{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
  80 %{mips4: -D_MIPS_ISA=_MIPS_ISA_MIPS4} \
  81 %{!mips*: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
  82 %{mabi=32: -D_MIPS_SIM=_MIPS_SIM_ABI32} \
  83 %{mabi=n32: -D_ABIN32=2 -D_MIPS_SIM=_ABIN32} \
  84 %{mabi=64: -D_ABI64=3 -D_MIPS_SIM=_ABI64} \
  85 %{!mabi*: -D_ABIN32=2 -D_MIPS_SIM=_ABIN32} \
  86 %{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
  87 %{mabi=32: -D_MIPS_SZLONG=32} \
  88 %{mabi=n32: -D_MIPS_SZLONG=32} \
  89 %{mabi=64: -D_MIPS_SZLONG=64} \
  90 %{!mabi*: -D_MIPS_SZLONG=32} \
  91 %{mabi=32: -D_MIPS_SZPTR=32} \
  92 %{mabi=n32: -D_MIPS_SZPTR=32} \
  93 %{mabi=64: -D_MIPS_SZPTR=64} \
  94 %{!mabi*: -D_MIPS_SZPTR=32} \
  95 %{!mips1:%{!mips2: -D_COMPILER_VERSION=601}}            \
  96 %{!mips*: -U__mips -D__mips=3} \
  97 %{mabi=32: -U__mips64} \
  98 %{mabi=n32: -D__mips64} \
  99 %{mabi=64: -D__mips64} \
 100 %{!mabi*: -D__mips64}"
 101
 102 /* Irix 6 uses DWARF-2.  */
 103 #define DWARF2_DEBUGGING_INFO
 104 #define MIPS_DEBUGGING_INFO
 105 #undef PREFERRED_DEBUGGING_TYPE
 106 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 107
 108 /* Force the generation of dwarf .debug_frame sections even if not
 109    compiling -g.  This guarantees that we can unwind the stack. */
 110 #define DWARF2_FRAME_INFO 1
 111 /* The size in bytes of a DWARF field indicating an offset or length
 112    relative to a debug info section, specified to be 4 bytes in the DWARF-2
 113    specification.  The SGI/MIPS ABI defines it to be the same as PTR_SIZE.  */
 114 #define DWARF_OFFSET_SIZE PTR_SIZE
 115
 116 /* There is no GNU as port for Irix6 yet, so we set MD_EXEC_PREFIX so that
 117    gcc will automatically find SGI as instead of searching the user's path.
 118    The latter can fail when building a cross compiler if the user has . in
 119    the path before /usr/bin, since then gcc will find and try to use the link
 120    to the cross assembler which can't possibly work.  */
 121
 122 #undef MD_EXEC_PREFIX
 123 #define MD_EXEC_PREFIX "/usr/bin/"
 124
 125 /* We have no need for MD_STARTFILE_PREFIX.  */
 126 #undef MD_STARTFILE_PREFIX
 127
 128 #undef MACHINE_TYPE
 129 #define MACHINE_TYPE "SGI running IRIX 6.x"
 130
 131 /* The Irix 6.0.1 assembler doesn't like labels in the text section, so
 132    just avoid emitting them.  */
 133 #define ASM_IDENTIFY_GCC(x) ((void)0)
 134 #define ASM_IDENTIFY_LANGUAGE(x) ((void)0)
 135
 136 /* Irix 5 stuff that we don't need for Irix 6.  */
 137 /* ??? We do need this for the -mabi=32 switch though.  */
 138 #undef ASM_OUTPUT_UNDEF_FUNCTION
 139 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 140 #undef ASM_DECLARE_FUNCTION_SIZE
 141
 142 /* Stuff we need for Irix 6 that isn't in Irix 5.  */
 143
 144 /* The SGI assembler doesn't like labels before the .ent, so we must output
 145    the .ent and function name here, which is the normal place for it.  */
 146
 147 #undef ASM_DECLARE_FUNCTION_NAME
 148 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)                   \
 149   do {                                                                  \
 150     fputs ("\t.ent\t", STREAM);                                         \
 151     assemble_name (STREAM, NAME);                                       \
 152     fputs ("\n", STREAM);                                               \
 153     assemble_name (STREAM, NAME);                                       \
 154     fputs (":\n", STREAM);                                              \
 155   } while (0)
 156
 157 /* Likewise, the SGI assembler doesn't like labels after the .end, so we
 158    must output the .end here.  */
 159 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL)                   \
 160   do {                                                                  \
 161     fputs ("\t.end\t", STREAM);                                         \
 162     assemble_name (STREAM, NAME);                                       \
 163     fputs ("\n", STREAM);                                               \
 164   } while (0)
 165
 166 /* Tell function_prologue in mips.c that we have already output the .ent/.end
 167    pseudo-ops.  */
 168 #define FUNCTION_NAME_ALREADY_DECLARED
 169
 170 #undef SET_ASM_OP       /* Has no equivalent.  See ASM_OUTPUT_DEF below.  */
 171
 172 #if 0
 173 /* This is *NOT* how to equate one symbol to another symbol.  The assembler
 174    '=' syntax just equates a name to a constant expression.
 175    See ASM_OUTPUT_WEAK_ALIAS.  */
 176
 177 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                              \
 178  do {   fprintf ((FILE), "\t");                                         \
 179         assemble_name (FILE, LABEL1);                                   \
 180         fprintf (FILE, " = ");                                          \
 181         assemble_name (FILE, LABEL2);                                   \
 182         fprintf (FILE, "\n");                                           \
 183   } while (0)
 184 #endif
 185
 186 /* Define the strings used for the special svr4 .type and .size directives.  */
 187
 188 #define TYPE_ASM_OP     "\t.type\t"
 189 #define SIZE_ASM_OP     "\t.size\t"
 190
 191 /* This is how we tell the assembler that a symbol is weak.  */
 192
 193 #define ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,VALUE)  \
 194  do {                                           \
 195   ASM_GLOBALIZE_LABEL (FILE, NAME);             \
 196   fputs ("\t.weakext\t", FILE);                 \
 197   assemble_name (FILE, NAME);                   \
 198   if (VALUE)                                    \
 199     {                                           \
 200       fputc (' ', FILE);                        \
 201       assemble_name (FILE, VALUE);              \
 202     }                                           \
 203   fputc ('\n', FILE);                           \
 204  } while (0)
 205
 206 #define ASM_WEAKEN_LABEL(FILE,NAME) ASM_OUTPUT_WEAK_ALIAS(FILE,NAME,0)
 207
 208 /* Irix assembler does not support the init_priority C++ attribute.  */
 209 #undef SUPPORTS_INIT_PRIORITY
 210 #define SUPPORTS_INIT_PRIORITY 0
 211
 212 #define POPSECTION_ASM_OP       "\t.popsection"
 213
 214 #define DEBUG_INFO_SECTION      ".debug_info,0x7000001e,0,0,1"
 215 #define DEBUG_LINE_SECTION      ".debug_line,0x7000001e,0,0,1"
 216 #define SFNAMES_SECTION         ".debug_sfnames,0x7000001e,0,0,1"
 217 #define SRCINFO_SECTION         ".debug_srcinfo,0x7000001e,0,0,1"
 218 #define MACINFO_SECTION         ".debug_macinfo,0x7000001e,0,0,1"
 219 #define PUBNAMES_SECTION        ".debug_pubnames,0x7000001e,0,0,1"
 220 #define ARANGES_SECTION         ".debug_aranges,0x7000001e,0,0,1"
 221 #define FRAME_SECTION           ".debug_frame,0x7000001e,0x08000000,0,1"
 222 #define ABBREV_SECTION          ".debug_abbrev,0x7000001e,0,0,1"
 223
 224 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 225    on the mipsX option.  */
 226 /* If no mips[3,4] option given, give the appropriate default for mabi=X */
 227 #undef SUBTARGET_ASM_SPEC
 228 #define SUBTARGET_ASM_SPEC "%{!mabi*:-n32} %{!mips*: %{!mabi*:-mips3} %{mabi=n32:-mips3} %{mabi=64:-mips4}}"
 229
 230 /* Must pass -g0 to the assembler, otherwise it may overwrite our
 231    debug info with its own debug info. */
 232 /* Must pass -show instead of -v.  */
 233 /* Must pass -G 0 to the assembler, otherwise we may get warnings about
 234    GOT overflow.  */
 235 /* ??? We pass -w to disable all assembler warnings.  The `label should be
 236    inside .ent/.end block' warning that we get for DWARF II debug info labels
 237    is particularly annoying.  */
 238 #undef SUBTARGET_MIPS_AS_ASM_SPEC
 239 #define SUBTARGET_MIPS_AS_ASM_SPEC "%{v:-show} -G 0 -w"
 240
 241 #undef SUBTARGET_ASM_DEBUGGING_SPEC
 242 #define SUBTARGET_ASM_DEBUGGING_SPEC "-g0"
 243
 244 /* The MIPS assembler occasionally misoptimizes.  Since GCC should be
 245    doing scheduling anyhow, just turn off optimization in the assembler.  */
 246 #undef SUBTARGET_ASM_OPTIMIZING_SPEC
 247 #define SUBTARGET_ASM_OPTIMIZING_SPEC "-O0"
 248
 249 /* Stuff for constructors.  Start here.  */
 250
 251 /* The assembler now accepts .section pseudo-ops, but it does not allow
 252    one to change the section in the middle of a function, so we can't use
 253    the INIT_SECTION_ASM_OP code in crtstuff.  But we can build up the ctor
 254    and dtor lists this way, so we use -init and -fini to invoke the
 255    do_global_* functions instead of running collect2.  */
 256
 257 #define BSS_SECTION_ASM_OP      "\t.section\t.bss"
 258 #define CONST_SECTION_ASM_OP_32 "\t.rdata"
 259 #define CONST_SECTION_ASM_OP_64 "\t.section\t.rodata"
 260
 261 /* The IRIX 6 assembler .section directive takes four additional args:
 262    section type, flags, entry size, and alignment.  The alignment of the
 263    .ctors and .dtors sections needs to be the same as the size of a pointer
 264    so that the linker doesn't add padding between elements.  */
 265 #if defined (CRT_BEGIN) || defined (CRT_END)
 266
 267 /* If we are included from crtstuff.c, these need to be plain strings.
 268    _MIPS_SZPTR is defined in SUBTARGET_CPP_SPEC above.  */
 269 #if _MIPS_SZPTR == 64
 270 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,1,2,0,8"
 271 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,1,2,0,8"
 272 #else /* _MIPS_SZPTR != 64 */
 273 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,1,2,0,4"
 274 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,1,2,0,4"
 275 #endif /* _MIPS_SZPTR == 64 */
 276
 277 #else /* ! (defined (CRT_BEGIN) || defined (CRT_END)) */
 278
 279 /* If we are included from varasm.c, these need to depend on -mabi.  */
 280 #define CTORS_SECTION_ASM_OP \
 281   (Pmode == DImode ? "\t.section\t.ctors,1,2,0,8" : "\t.section\t.ctors,1,2,0,4")
 282 #define DTORS_SECTION_ASM_OP \
 283   (Pmode == DImode ? "\t.section\t.dtors,1,2,0,8" : "\t.section\t.dtors,1,2,0,4")
 284 #endif /* defined (CRT_BEGIN) || defined (CRT_END) */
 285
 286 /* dwarf2out will handle padding this data properly.  We definitely don't
 287    want it 8-byte aligned on n32.  */
 288 #define EH_FRAME_SECTION_ASM_OP "\t.section\t.eh_frame,1,2,0,1"
 289
 290 /* A default list of other sections which we might be "in" at any given
 291    time.  For targets that use additional sections (e.g. .tdesc) you
 292    should override this definition in the target-specific file which
 293    includes this file.  */
 294
 295 #undef EXTRA_SECTIONS
 296 #define EXTRA_SECTIONS in_sdata, in_rdata, in_const, in_ctors, in_dtors
 297
 298 /* A default list of extra section function definitions.  For targets
 299    that use additional sections (e.g. .tdesc) you should override this
 300    definition in the target-specific file which includes this file.  */
 301
 302 /* ??? rdata_section is now same as svr4 const_section.  */
 303
 304 #undef EXTRA_SECTION_FUNCTIONS
 305 #define EXTRA_SECTION_FUNCTIONS                                         \
 306 void                                                                    \
 307 sdata_section ()                                                        \
 308 {                                                                       \
 309   if (in_section != in_sdata)                                           \
 310     {                                                                   \
 311       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \
 312       in_section = in_sdata;                                            \
 313     }                                                                   \
 314 }                                                                       \
 315                                                                         \
 316 void                                                                    \
 317 rdata_section ()                                                        \
 318 {                                                                       \
 319   if (in_section != in_rdata)                                           \
 320     {                                                                   \
 321       if (mips_abi != ABI_32 && mips_abi != ABI_O64)                    \
 322         fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_64);        \
 323       else                                                              \
 324         fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_32);        \
 325       in_section = in_rdata;                                            \
 326     }                                                                   \
 327 }                                                                       \
 328   CTORS_SECTION_FUNCTION                                                \
 329   DTORS_SECTION_FUNCTION
 330
 331 #define CTORS_SECTION_FUNCTION                                          \
 332 void                                                                    \
 333 ctors_section ()                                                        \
 334 {                                                                       \
 335   if (in_section != in_ctors)                                           \
 336     {                                                                   \
 337       fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP);             \
 338       in_section = in_ctors;                                            \
 339     }                                                                   \
 340 }
 341
 342 #define DTORS_SECTION_FUNCTION                                          \
 343 void                                                                    \
 344 dtors_section ()                                                        \
 345 {                                                                       \
 346   if (in_section != in_dtors)                                           \
 347     {                                                                   \
 348       fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP);             \
 349       in_section = in_dtors;                                            \
 350     }                                                                   \
 351 }
 352
 353 /* A C statement (sans semicolon) to output an element in the table of
 354    global constructors.  */
 355 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                               \
 356   do {                                                                  \
 357     ctors_section ();                                                   \
 358     fprintf (FILE, "\t%s\t ",                                           \
 359              (Pmode == DImode) ? ".dword" : ".word");                   \
 360     assemble_name (FILE, NAME);                                         \
 361     fprintf (FILE, "\n");                                               \
 362   } while (0)
 363
 364 /* A C statement (sans semicolon) to output an element in the table of
 365    global destructors.  */
 366 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                \
 367   do {                                                                  \
 368     dtors_section ();                                                   \
 369     fprintf (FILE, "\t%s\t ",                                           \
 370              (Pmode == DImode) ? ".dword" : ".word");                   \
 371     assemble_name (FILE, NAME);                                         \
 372     fprintf (FILE, "\n");                                               \
 373   } while (0)
 374
 375 /* A C statement to output something to the assembler file to switch to section
 376    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
 377    NULL_TREE.  */
 378
 379 #define ASM_OUTPUT_SECTION_NAME(F, DECL, NAME, RELOC)                   \
 380 do {                                                                    \
 381   extern FILE *asm_out_text_file;                                       \
 382   if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL)                      \
 383     fprintf (asm_out_text_file, "\t.section %s,1,6,4,4\n", (NAME));     \
 384   else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC))               \
 385     fprintf (F, "\t.section %s,1,2,0,8\n", (NAME));                     \
 386   else if (! strcmp (NAME, ".bss"))                                     \
 387     fprintf (F, "\t.section %s,\"aw\",@nobits\n", (NAME));              \
 388   else                                                                  \
 389     fprintf (F, "\t.section %s,1,3,0,8\n", (NAME));                     \
 390 } while (0)
 391
 392 /* Stuff for constructors.  End here.  */
 393
 394 /* ??? Perhaps just include svr4.h in this file?  */
 395
 396 /* ??? SGI assembler may core dump when compiling with -g.
 397    Sometimes as succeeds, but then we get a linker error. (cmds.c in 072.sc)
 398    Getting rid of .file solves both problems.  */
 399 #undef ASM_OUTPUT_FILENAME
 400 #define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \
 401 do                                                              \
 402   {                                                             \
 403     fprintf (STREAM, "\t#.file\t%d ", NUM_SOURCE_FILENAMES);    \
 404     output_quoted_string (STREAM, NAME);                        \
 405     fputs ("\n", STREAM);                                       \
 406   }                                                             \
 407 while (0)
 408
 409 /* ??? SGI assembler gives warning whenever .lcomm is used.  */
 410 #undef ASM_OUTPUT_LOCAL
 411 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)                \
 412 do                                                                         \
 413   {                                                                        \
 414     if (mips_abi != ABI_32 && mips_abi != ABI_O64)                         \
 415       {                                                                    \
 416         fprintf (STREAM, "%s\n", BSS_SECTION_ASM_OP);                      \
 417         mips_declare_object (STREAM, NAME, "", ":\n", 0);                  \
 418         ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));     \
 419         ASM_OUTPUT_SKIP (STREAM, SIZE);                                    \
 420         fprintf (STREAM, "%s\n", POPSECTION_ASM_OP);                       \
 421       }                                                                    \
 422     else                                                                   \
 423       mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (SIZE)); \
 424   }                                                                        \
 425 while (0)
 426
 427 /* A C statement (sans semicolon) to output to the stdio stream
 428    FILE the assembler definition of uninitialized global DECL named
 429    NAME whose size is SIZE bytes and alignment is ALIGN bytes.
 430    Try to use asm_output_aligned_bss to implement this macro.  */
 431
 432 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
 433   asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
 434
 435 /* Write the extra assembler code needed to declare an object properly.  */
 436
 437 #undef ASM_DECLARE_OBJECT_NAME
 438 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)                     \
 439 do                                                                      \
 440  {                                                                      \
 441    size_directive_output = 0;                                           \
 442    if (!flag_inhibit_size_directive && DECL_SIZE (DECL))        \
 443      {                                                                  \
 444        size_directive_output = 1;                                       \
 445        fprintf (STREAM, "%s", SIZE_ASM_OP);                             \
 446        assemble_name (STREAM, NAME);                                    \
 447        fprintf (STREAM, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
 448      }                                                                  \
 449    mips_declare_object (STREAM, NAME, "", ":\n", 0);                    \
 450  }                                                                      \
 451 while (0)
 452
 453 /* Define the `__builtin_va_list' type for the ABI.  On Irix6, this
 454    type is `char *'.  */
 455 #undef BUILD_VA_LIST_TYPE
 456 #define BUILD_VA_LIST_TYPE(VALIST) \
 457   (VALIST) = build_pointer_type (char_type_node)
 458
 459 /* Output the size directive for a decl in rest_of_decl_compilation
 460    in the case where we did not do so before the initializer.
 461    Once we find the error_mark_node, we know that the value of
 462    size_directive_output was set
 463    by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
 464
 465 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 466 do {                                                                     \
 467      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 468      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 469          && ! AT_END && TOP_LEVEL                                        \
 470          && DECL_INITIAL (DECL) == error_mark_node                       \
 471          && !size_directive_output)                                      \
 472        {                                                                 \
 473          size_directive_output = 1;                                      \
 474          fprintf (FILE, "%s", SIZE_ASM_OP);                              \
 475          assemble_name (FILE, name);                                     \
 476          fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
 477        }                                                                 \
 478    } while (0)
 479
 480 #undef LOCAL_LABEL_PREFIX
 481 #define LOCAL_LABEL_PREFIX ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
 482                             ? "$" : ".")
 483
 484 /* Profiling is supported via libprof1.a not -lc_p as in Irix 3.  */
 485 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 486    on the mipsX option.  */
 487 #undef STARTFILE_SPEC
 488 #define STARTFILE_SPEC \
 489   "%{!shared: \
 490      %{mabi=32:%{pg:gcrt1.o%s} \
 491        %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
 492      %{mabi=n32: \
 493        %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
 494          %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
 495            %{!p:/usr/lib32/mips4/crt1.o%s}}} \
 496        %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
 497          %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
 498            %{!p:/usr/lib32/mips3/crt1.o%s}}}} \
 499      %{mabi=64: \
 500        %{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
 501          %{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
 502            %{!p:/usr/lib64/mips4/crt1.o}}} \
 503        %{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
 504          %{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
 505            %{!p:/usr/lib64/mips3/crt1.o}}}} \
 506      %{!mabi*: \
 507        %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
 508          %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
 509            %{!p:/usr/lib32/mips4/crt1.o%s}}} \
 510        %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
 511          %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
 512            %{!p:/usr/lib32/mips3/crt1.o%s}}}}} \
 513    crtbegin.o%s"
 514
 515 #undef LIB_SPEC
 516 #define LIB_SPEC \
 517   "%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
 518      -L/usr/lib32} \
 519    %{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
 520      -L/usr/lib64} \
 521    %{!mabi*: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
 522      -L/usr/lib32} \
 523    %{!shared: \
 524      -dont_warn_unused %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc -warn_unused}"
 525
 526 /* Avoid getting two warnings for libgcc.a everytime we link.  */
 527 #undef LIBGCC_SPEC
 528 #define LIBGCC_SPEC "-dont_warn_unused -lgcc -warn_unused"
 529
 530 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 531    on the mipsX option.  */
 532 #undef ENDFILE_SPEC
 533 #define ENDFILE_SPEC \
 534   "crtend.o%s \
 535    %{!shared: \
 536      %{mabi=32:crtn.o%s}\
 537      %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 538        %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
 539      %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
 540        %{!mips4:/usr/lib64/mips3/crtn.o%s}}\
 541      %{!mabi*:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 542        %{!mips4:/usr/lib32/mips3/crtn.o%s}}}"
 543
 544 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 545    on the mipsX option.  */
 546 #undef LINK_SPEC
 547 #define LINK_SPEC "\
 548 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
 549 %{bestGnum} %{shared} %{non_shared} \
 550 %{call_shared} %{no_archive} %{exact_version} %{w} \
 551 %{!shared: %{!non_shared: %{!call_shared: -call_shared -no_unresolved}}} \
 552 %{rpath} -init __do_global_ctors -fini __do_global_dtors \
 553 %{shared:-hidden_symbol __do_global_ctors,__do_global_dtors,__EH_FRAME_BEGIN__,__frame_dummy} \
 554 -_SYSTYPE_SVR4 -woff 131 \
 555 %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"