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 /* wchar_t is defined differently with and without -mabi=64.  */
  43
  44 #define NO_BUILTIN_WCHAR_TYPE
  45
  46 #undef WCHAR_TYPE
  47 #define WCHAR_TYPE (Pmode == DImode ? "int" : "long int")
  48
  49 #undef WCHAR_TYPE_SIZE
  50 #define WCHAR_TYPE_SIZE 32
  51
  52 /* Same for wint_t.  */
  53
  54 #define NO_BUILTIN_WINT_TYPE
  55
  56 #undef WINT_TYPE
  57 #define WINT_TYPE (Pmode == DImode ? "int" : "long int")
  58
  59 #undef WINT_TYPE_SIZE
  60 #define WINT_TYPE_SIZE 32
  61
  62 /* For Irix 6, -mabi=64 implies TARGET_LONG64.  */
  63 /* This is handled in override_options.  */
  64
  65 #undef SUBTARGET_CC1_SPEC
  66 #define SUBTARGET_CC1_SPEC ""
  67
  68 /* We must pass -D_LONGLONG always, even when -ansi is used, because irix6
  69    system header files require it.  This is OK, because gcc never warns
  70    when long long is used in system header files.  Alternatively, we can
  71    add support for the SGI builtin type __long_long.  */
  72 #undef CPP_PREDEFINES
  73 #define CPP_PREDEFINES \
  74  "-Dunix -Dmips -Dsgi -Dhost_mips -DMIPSEB -D_MIPSEB -DSYSTYPE_SVR4 \
  75   -D_LONGLONG -D_SVR4_SOURCE -D_MODERN_C -D__DSO__ \
  76   -Asystem=unix -Asystem=svr4 -Acpu=mips -Amachine=sgi"
  77
  78 #undef SUBTARGET_CPP_SIZE_SPEC
  79 #define SUBTARGET_CPP_SIZE_SPEC "\
  80 %{mabi=32|mabi=n32: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int \
  81 -D__WCHAR_TYPE__=long\\ int -D__WINT_TYPE__=long\\ int} \
  82 %{mabi=64: -D__SIZE_TYPE__=long\\ unsigned\\ int -D__PTRDIFF_TYPE__=long\\ int \
  83 -D__WCHAR_TYPE__=int -D__WINT_TYPE__=int} \
  84 %{!mabi*: -D__SIZE_TYPE__=unsigned\\ int -D__PTRDIFF_TYPE__=int \
  85 -D__WCHAR_TYPE__=long\\ int -D__WINT_TYPE__=long\\ int}"
  86
  87 /* We must make -mips3 do what -mlong64 used to do.  */
  88 /* ??? If no mipsX option given, but a mabi=X option is, then should set
  89    _MIPS_ISA based on the mabi=X option.  */
  90 /* ??? If no mabi=X option give, but a mipsX option is, then should set
  91    _MIPS_SIM based on the mipsX option.  */
  92 /* ??? Same for _MIPS_SZINT.  */
  93 /* ??? Same for _MIPS_SZPTR.  */
  94 /* ??? Same for __SIZE_TYPE and __PTRDIFF_TYPE.  */
  95 #undef SUBTARGET_CPP_SPEC
  96 #define SUBTARGET_CPP_SPEC "\
  97 %{!ansi:-D__EXTENSIONS__ -D_SGI_SOURCE} \
  98 %{mfp32: -D_MIPS_FPSET=16}%{!mfp32: -D_MIPS_FPSET=32} \
  99 %{mips1: -D_MIPS_ISA=_MIPS_ISA_MIPS1} \
 100 %{mips2: -D_MIPS_ISA=_MIPS_ISA_MIPS2} \
 101 %{mips3: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
 102 %{mips4: -D_MIPS_ISA=_MIPS_ISA_MIPS4} \
 103 %{!mips*: -D_MIPS_ISA=_MIPS_ISA_MIPS3} \
 104 %{mabi=32: -D_MIPS_SIM=_MIPS_SIM_ABI32} \
 105 %{mabi=n32: -D_ABIN32=2 -D_MIPS_SIM=_ABIN32} \
 106 %{mabi=64: -D_ABI64=3 -D_MIPS_SIM=_ABI64} \
 107 %{!mabi*: -D_ABIN32=2 -D_MIPS_SIM=_ABIN32} \
 108 %{!mint64: -D_MIPS_SZINT=32}%{mint64: -D_MIPS_SZINT=64} \
 109 %{mabi=32: -D_MIPS_SZLONG=32} \
 110 %{mabi=n32: -D_MIPS_SZLONG=32} \
 111 %{mabi=64: -D_MIPS_SZLONG=64} \
 112 %{!mabi*: -D_MIPS_SZLONG=32} \
 113 %{mabi=32: -D_MIPS_SZPTR=32} \
 114 %{mabi=n32: -D_MIPS_SZPTR=32} \
 115 %{mabi=64: -D_MIPS_SZPTR=64} \
 116 %{!mabi*: -D_MIPS_SZPTR=32} \
 117 %{!mips1:%{!mips2: -D_COMPILER_VERSION=601}}            \
 118 %{!mips*: -U__mips -D__mips=3} \
 119 %{mabi=32: -U__mips64} \
 120 %{mabi=n32: -D__mips64} \
 121 %{mabi=64: -D__mips64} \
 122 %{!mabi*: -D__mips64}"
 123
 124 /* Irix 6 uses DWARF-2.  */
 125 #define DWARF2_DEBUGGING_INFO
 126 #define MIPS_DEBUGGING_INFO
 127 #undef PREFERRED_DEBUGGING_TYPE
 128 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 129
 130 /* Force the generation of dwarf .debug_frame sections even if not
 131    compiling -g.  This guarantees that we can unwind the stack. */
 132 #define DWARF2_FRAME_INFO 1
 133 /* The size in bytes of a DWARF field indicating an offset or length
 134    relative to a debug info section, specified to be 4 bytes in the DWARF-2
 135    specification.  The SGI/MIPS ABI defines it to be the same as PTR_SIZE.  */
 136 #define DWARF_OFFSET_SIZE PTR_SIZE
 137
 138 /* There is no GNU as port for Irix6 yet, so we set MD_EXEC_PREFIX so that
 139    gcc will automatically find SGI as instead of searching the user's path.
 140    The latter can fail when building a cross compiler if the user has . in
 141    the path before /usr/bin, since then gcc will find and try to use the link
 142    to the cross assembler which can't possibly work.  */
 143
 144 #undef MD_EXEC_PREFIX
 145 #define MD_EXEC_PREFIX "/usr/bin/"
 146
 147 /* We have no need for MD_STARTFILE_PREFIX.  */
 148 #undef MD_STARTFILE_PREFIX
 149
 150 #undef MACHINE_TYPE
 151 #define MACHINE_TYPE "SGI running IRIX 6.x"
 152
 153 /* Irix 5 stuff that we don't need for Irix 6.  */
 154 /* ??? We do need this for the -mabi=32 switch though.  */
 155 #undef ASM_OUTPUT_UNDEF_FUNCTION
 156 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 157 #undef ASM_DECLARE_FUNCTION_SIZE
 158 #undef UNALIGNED_SHORT_ASM_OP
 159 #undef UNALIGNED_INT_ASM_OP
 160
 161 /* Stuff we need for Irix 6 that isn't in Irix 5.  */
 162
 163 /* The SGI assembler doesn't like labels before the .ent, so we must output
 164    the .ent and function name here, which is the normal place for it.  */
 165
 166 #undef ASM_DECLARE_FUNCTION_NAME
 167 #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)                   \
 168   do {                                                                  \
 169     fputs ("\t.ent\t", STREAM);                                         \
 170     assemble_name (STREAM, NAME);                                       \
 171     fputs ("\n", STREAM);                                               \
 172     assemble_name (STREAM, NAME);                                       \
 173     fputs (":\n", STREAM);                                              \
 174   } while (0)
 175
 176 /* Likewise, the SGI assembler doesn't like labels after the .end, so we
 177    must output the .end here.  */
 178 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL)                   \
 179   do {                                                                  \
 180     fputs ("\t.end\t", STREAM);                                         \
 181     assemble_name (STREAM, NAME);                                       \
 182     fputs ("\n", STREAM);                                               \
 183   } while (0)
 184
 185 /* Tell function_prologue in mips.c that we have already output the .ent/.end
 186    pseudo-ops.  */
 187 #define FUNCTION_NAME_ALREADY_DECLARED
 188
 189 #undef SET_ASM_OP       /* Has no equivalent.  See ASM_OUTPUT_DEF below.  */
 190
 191 #if 0
 192 /* This is *NOT* how to equate one symbol to another symbol.  The assembler
 193    '=' syntax just equates a name to a constant expression.
 194    See ASM_OUTPUT_WEAK_ALIAS.  */
 195
 196 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)                              \
 197  do {   fprintf ((FILE), "\t");                                         \
 198         assemble_name (FILE, LABEL1);                                   \
 199         fprintf (FILE, " = ");                                          \
 200         assemble_name (FILE, LABEL2);                                   \
 201         fprintf (FILE, "\n");                                           \
 202   } while (0)
 203 #endif
 204
 205 /* Define the strings used for the special svr4 .type and .size directives.  */
 206
 207 #define TYPE_ASM_OP     "\t.type\t"
 208 #define SIZE_ASM_OP     "\t.size\t"
 209
 210 /* Irix assembler does not support the init_priority C++ attribute.  */
 211 #undef SUPPORTS_INIT_PRIORITY
 212 #define SUPPORTS_INIT_PRIORITY 0
 213
 214 /* A linker error can empirically be avoided by removing duplicate
 215    library search directories.  */
 216 #define LINK_ELIMINATE_DUPLICATE_LDIRECTORIES 1
 217
 218 #define POPSECTION_ASM_OP       "\t.popsection"
 219
 220 #define DEBUG_INFO_SECTION      ".debug_info,0x7000001e,0,0,1"
 221 #define DEBUG_LINE_SECTION      ".debug_line,0x7000001e,0,0,1"
 222 #define DEBUG_SFNAMES_SECTION   ".debug_sfnames,0x7000001e,0,0,1"
 223 #define DEBUG_SRCINFO_SECTION   ".debug_srcinfo,0x7000001e,0,0,1"
 224 #define DEBUG_MACINFO_SECTION   ".debug_macinfo,0x7000001e,0,0,1"
 225 #define DEBUG_PUBNAMES_SECTION  ".debug_pubnames,0x7000001e,0,0,1"
 226 #define DEBUG_ARANGES_SECTION   ".debug_aranges,0x7000001e,0,0,1"
 227 #define DEBUG_FRAME_SECTION     ".debug_frame,0x7000001e,0x08000000,0,1"
 228 #define DEBUG_ABBREV_SECTION    ".debug_abbrev,0x7000001e,0,0,1"
 229 #define DEBUG_LOC_SECTION       ".debug_loc,0x7000001e,0,0,1"
 230 #define DEBUG_STR_SECTION       ".debug_str,0x7000001e,0,0,1"
 231 #define DEBUG_RANGES_SECTION    ".debug_ranges,0x7000001e,0,0,1"
 232
 233 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 234    on the mipsX option.  */
 235 /* If no mips[3,4] option given, give the appropriate default for mabi=X */
 236 #undef SUBTARGET_ASM_SPEC
 237 #define SUBTARGET_ASM_SPEC "%{!mabi*:-n32} %{!mips*: %{!mabi*:-mips3} %{mabi=n32:-mips3} %{mabi=64:-mips4}}"
 238
 239 /* Must pass -g0 to the assembler, otherwise it may overwrite our
 240    debug info with its own debug info. */
 241 /* Must pass -show instead of -v.  */
 242 /* Must pass -G 0 to the assembler, otherwise we may get warnings about
 243    GOT overflow.  */
 244 /* ??? We pass -w to disable all assembler warnings.  The `label should be
 245    inside .ent/.end block' warning that we get for DWARF II debug info labels
 246    is particularly annoying.  */
 247 #undef SUBTARGET_MIPS_AS_ASM_SPEC
 248 #define SUBTARGET_MIPS_AS_ASM_SPEC "%{v:-show} -G 0 -w"
 249
 250 #undef SUBTARGET_ASM_DEBUGGING_SPEC
 251 #define SUBTARGET_ASM_DEBUGGING_SPEC "-g0"
 252
 253 /* The MIPS assembler occasionally misoptimizes.  Since GCC should be
 254    doing scheduling anyhow, just turn off optimization in the assembler.  */
 255 #undef SUBTARGET_ASM_OPTIMIZING_SPEC
 256 #define SUBTARGET_ASM_OPTIMIZING_SPEC "-O0"
 257
 258 /* Stuff for constructors.  Start here.  */
 259
 260 /* The assembler now accepts .section pseudo-ops, but it does not allow
 261    one to change the section in the middle of a function, so we can't use
 262    the INIT_SECTION_ASM_OP code in crtstuff.  But we can build up the ctor
 263    and dtor lists this way, so we use -init and -fini to invoke the
 264    do_global_* functions instead of running collect2.  */
 265
 266 #define BSS_SECTION_ASM_OP      "\t.section\t.bss"
 267 #define CONST_SECTION_ASM_OP_32 "\t.rdata"
 268 #define CONST_SECTION_ASM_OP_64 "\t.section\t.rodata"
 269
 270 /* The IRIX 6 assembler .section directive takes four additional args:
 271    section type, flags, entry size, and alignment.  The alignment of the
 272    .ctors and .dtors sections needs to be the same as the size of a pointer
 273    so that the linker doesn't add padding between elements.  */
 274 #if defined (CRT_BEGIN) || defined (CRT_END)
 275
 276 /* If we are included from crtstuff.c, these need to be plain strings.
 277    _MIPS_SZPTR is defined in SUBTARGET_CPP_SPEC above.  */
 278 #if _MIPS_SZPTR == 64
 279 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,1,2,0,8"
 280 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,1,2,0,8"
 281 #define EH_FRAME_SECTION_ASM_OP "\t.section\t.eh_frame,1,2,0,8"
 282 #else /* _MIPS_SZPTR != 64 */
 283 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,1,2,0,4"
 284 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,1,2,0,4"
 285 #define EH_FRAME_SECTION_ASM_OP "\t.section\t.eh_frame,1,2,0,4"
 286
 287 #endif /* _MIPS_SZPTR == 64 */
 288
 289 #else /* ! (defined (CRT_BEGIN) || defined (CRT_END)) */
 290
 291 /* If we are included from varasm.c, these need to depend on -mabi.  */
 292 #define CTORS_SECTION_ASM_OP \
 293   (Pmode == DImode ? "\t.section\t.ctors,1,2,0,8" : "\t.section\t.ctors,1,2,0,4")
 294 #define DTORS_SECTION_ASM_OP \
 295   (Pmode == DImode ? "\t.section\t.dtors,1,2,0,8" : "\t.section\t.dtors,1,2,0,4")
 296 #define EH_FRAME_SECTION_ASM_OP \
 297   (Pmode == DImode ? "\t.section\t.eh_frame,1,2,0,8" : "\t.section\t.eh_frame,1,2,0,4")
 298 #endif /* defined (CRT_BEGIN) || defined (CRT_END) */
 299
 300 /* A default list of other sections which we might be "in" at any given
 301    time.  For targets that use additional sections (e.g. .tdesc) you
 302    should override this definition in the target-specific file which
 303    includes this file.  */
 304
 305 #undef EXTRA_SECTIONS
 306 #define EXTRA_SECTIONS in_sdata, in_rdata, in_const, in_ctors, in_dtors
 307
 308 /* A default list of extra section function definitions.  For targets
 309    that use additional sections (e.g. .tdesc) you should override this
 310    definition in the target-specific file which includes this file.  */
 311
 312 /* ??? rdata_section is now same as svr4 const_section.  */
 313
 314 #undef EXTRA_SECTION_FUNCTIONS
 315 #define EXTRA_SECTION_FUNCTIONS                                         \
 316 void                                                                    \
 317 sdata_section ()                                                        \
 318 {                                                                       \
 319   if (in_section != in_sdata)                                           \
 320     {                                                                   \
 321       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \
 322       in_section = in_sdata;                                            \
 323     }                                                                   \
 324 }                                                                       \
 325                                                                         \
 326 void                                                                    \
 327 rdata_section ()                                                        \
 328 {                                                                       \
 329   if (in_section != in_rdata)                                           \
 330     {                                                                   \
 331       if (mips_abi != ABI_32 && mips_abi != ABI_O64)                    \
 332         fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_64);        \
 333       else                                                              \
 334         fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_32);        \
 335       in_section = in_rdata;                                            \
 336     }                                                                   \
 337 }                                                                       \
 338   CTORS_SECTION_FUNCTION                                                \
 339   DTORS_SECTION_FUNCTION
 340
 341 #define CTORS_SECTION_FUNCTION                                          \
 342 void                                                                    \
 343 ctors_section ()                                                        \
 344 {                                                                       \
 345   if (in_section != in_ctors)                                           \
 346     {                                                                   \
 347       fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP);             \
 348       in_section = in_ctors;                                            \
 349     }                                                                   \
 350 }
 351
 352 #define DTORS_SECTION_FUNCTION                                          \
 353 void                                                                    \
 354 dtors_section ()                                                        \
 355 {                                                                       \
 356   if (in_section != in_dtors)                                           \
 357     {                                                                   \
 358       fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP);             \
 359       in_section = in_dtors;                                            \
 360     }                                                                   \
 361 }
 362
 363 /* A C statement (sans semicolon) to output an element in the table of
 364    global constructors.  */
 365 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                               \
 366   do {                                                                  \
 367     ctors_section ();                                                   \
 368     fprintf (FILE, "\t%s\t ",                                           \
 369              (Pmode == DImode) ? ".dword" : ".word");                   \
 370     assemble_name (FILE, NAME);                                         \
 371     fprintf (FILE, "\n");                                               \
 372   } while (0)
 373
 374 /* A C statement (sans semicolon) to output an element in the table of
 375    global destructors.  */
 376 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                \
 377   do {                                                                  \
 378     dtors_section ();                                                   \
 379     fprintf (FILE, "\t%s\t ",                                           \
 380              (Pmode == DImode) ? ".dword" : ".word");                   \
 381     assemble_name (FILE, NAME);                                         \
 382     fprintf (FILE, "\n");                                               \
 383   } while (0)
 384
 385 /* A C statement to output something to the assembler file to switch to section
 386    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
 387    NULL_TREE.  */
 388
 389 #define ASM_OUTPUT_SECTION_NAME(F, DECL, NAME, RELOC)                   \
 390 do {                                                                    \
 391   extern FILE *asm_out_text_file;                                       \
 392   if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL)                      \
 393     fprintf (asm_out_text_file, "\t.section %s,1,6,4,4\n", (NAME));     \
 394   else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC))               \
 395     fprintf (F, "\t.section %s,1,2,0,8\n", (NAME));                     \
 396   else if (! strcmp (NAME, ".bss"))                                     \
 397     fprintf (F, "\t.section %s,\"aw\",@nobits\n", (NAME));              \
 398   else                                                                  \
 399     fprintf (F, "\t.section %s,1,3,0,8\n", (NAME));                     \
 400 } while (0)
 401
 402 /* Stuff for constructors.  End here.  */
 403
 404 /* ??? Perhaps just include svr4.h in this file?  */
 405
 406 /* ??? SGI assembler may core dump when compiling with -g.
 407    Sometimes as succeeds, but then we get a linker error. (cmds.c in 072.sc)
 408    Getting rid of .file solves both problems.  */
 409 #undef ASM_OUTPUT_FILENAME
 410 #define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \
 411 do                                                              \
 412   {                                                             \
 413     fprintf (STREAM, "\t#.file\t%d ", NUM_SOURCE_FILENAMES);    \
 414     output_quoted_string (STREAM, NAME);                        \
 415     fputs ("\n", STREAM);                                       \
 416   }                                                             \
 417 while (0)
 418
 419 /* ??? SGI assembler gives warning whenever .lcomm is used.  */
 420 #undef ASM_OUTPUT_LOCAL
 421 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)                \
 422 do                                                                         \
 423   {                                                                        \
 424     if (mips_abi != ABI_32 && mips_abi != ABI_O64)                         \
 425       {                                                                    \
 426         fprintf (STREAM, "%s\n", BSS_SECTION_ASM_OP);                      \
 427         mips_declare_object (STREAM, NAME, "", ":\n", 0);                  \
 428         ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));     \
 429         ASM_OUTPUT_SKIP (STREAM, SIZE);                                    \
 430         fprintf (STREAM, "%s\n", POPSECTION_ASM_OP);                       \
 431       }                                                                    \
 432     else                                                                   \
 433       mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (SIZE)); \
 434   }                                                                        \
 435 while (0)
 436
 437 /* A C statement (sans semicolon) to output to the stdio stream
 438    FILE the assembler definition of uninitialized global DECL named
 439    NAME whose size is SIZE bytes and alignment is ALIGN bytes.
 440    Try to use asm_output_aligned_bss to implement this macro.  */
 441
 442 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
 443   asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
 444
 445 /* Write the extra assembler code needed to declare an object properly.  */
 446
 447 #undef ASM_DECLARE_OBJECT_NAME
 448 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)                     \
 449 do                                                                      \
 450  {                                                                      \
 451    size_directive_output = 0;                                           \
 452    if (!flag_inhibit_size_directive && DECL_SIZE (DECL))        \
 453      {                                                                  \
 454        size_directive_output = 1;                                       \
 455        fprintf (STREAM, "%s", SIZE_ASM_OP);                             \
 456        assemble_name (STREAM, NAME);                                    \
 457        fprintf (STREAM, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
 458      }                                                                  \
 459    mips_declare_object (STREAM, NAME, "", ":\n", 0);                    \
 460  }                                                                      \
 461 while (0)
 462
 463 /* Define the `__builtin_va_list' type for the ABI.  On Irix6, this
 464    type is `char *'.  */
 465 #undef BUILD_VA_LIST_TYPE
 466 #define BUILD_VA_LIST_TYPE(VALIST) \
 467   (VALIST) = build_pointer_type (char_type_node)
 468
 469 /* Output the size directive for a decl in rest_of_decl_compilation
 470    in the case where we did not do so before the initializer.
 471    Once we find the error_mark_node, we know that the value of
 472    size_directive_output was set
 473    by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
 474
 475 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 476 do {                                                                     \
 477      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 478      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 479          && ! AT_END && TOP_LEVEL                                        \
 480          && DECL_INITIAL (DECL) == error_mark_node                       \
 481          && !size_directive_output)                                      \
 482        {                                                                 \
 483          size_directive_output = 1;                                      \
 484          fprintf (FILE, "%s", SIZE_ASM_OP);                              \
 485          assemble_name (FILE, name);                                     \
 486          fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
 487        }                                                                 \
 488    } while (0)
 489
 490 #undef LOCAL_LABEL_PREFIX
 491 #define LOCAL_LABEL_PREFIX ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
 492                             ? "$" : ".")
 493
 494 /* Profiling is supported via libprof1.a not -lc_p as in Irix 3.  */
 495 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 496    on the mipsX option.  */
 497 #undef STARTFILE_SPEC
 498 #define STARTFILE_SPEC \
 499   "%{!shared: \
 500      %{mabi=32:%{pg:gcrt1.o%s} \
 501        %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
 502      %{mabi=n32: \
 503        %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
 504          %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
 505            %{!p:/usr/lib32/mips4/crt1.o%s}}} \
 506        %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
 507          %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
 508            %{!p:/usr/lib32/mips3/crt1.o%s}}}} \
 509      %{mabi=64: \
 510        %{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
 511          %{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
 512            %{!p:/usr/lib64/mips4/crt1.o}}} \
 513        %{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
 514          %{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
 515            %{!p:/usr/lib64/mips3/crt1.o}}}} \
 516      %{!mabi*: \
 517        %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
 518          %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
 519            %{!p:/usr/lib32/mips4/crt1.o%s}}} \
 520        %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
 521          %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
 522            %{!p:/usr/lib32/mips3/crt1.o%s}}}}} \
 523    crtbegin.o%s"
 524
 525 #undef LIB_SPEC
 526 #define LIB_SPEC \
 527   "%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
 528      -L/usr/lib32} \
 529    %{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
 530      -L/usr/lib64} \
 531    %{!mabi*: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
 532      -L/usr/lib32} \
 533    %{!shared: \
 534      -dont_warn_unused %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc -warn_unused}"
 535
 536 /* Avoid getting two warnings for libgcc.a everytime we link.  */
 537 #undef LIBGCC_SPEC
 538 #define LIBGCC_SPEC "-dont_warn_unused -lgcc -warn_unused"
 539
 540 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 541    on the mipsX option.  */
 542 #undef ENDFILE_SPEC
 543 #define ENDFILE_SPEC \
 544   "crtend.o%s \
 545    %{!shared: \
 546      %{mabi=32:crtn.o%s}\
 547      %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 548        %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
 549      %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
 550        %{!mips4:/usr/lib64/mips3/crtn.o%s}}\
 551      %{!mabi*:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 552        %{!mips4:/usr/lib32/mips3/crtn.o%s}}}"
 553
 554 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 555    on the mipsX option.  */
 556 #undef LINK_SPEC
 557 #define LINK_SPEC "\
 558 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
 559 %{bestGnum} %{shared} %{non_shared} \
 560 %{call_shared} %{no_archive} %{exact_version} %{w} \
 561 %{!shared: %{!non_shared: %{!call_shared: -call_shared -no_unresolved}}} \
 562 %{rpath} -init __do_global_ctors -fini __do_global_dtors \
 563 %{shared:-hidden_symbol __do_global_ctors,__do_global_dtors,__EH_FRAME_BEGIN__,__frame_dummy} \
 564 -_SYSTYPE_SVR4 -woff 131 \
 565 %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"