gcc/config/mips/iris6.h

   1 /* Definitions of target machine for GNU compiler.  Iris version 6.
   2    Copyright (C) 1994, 1995, 1996, 1997, 1998 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 "%{static: -mno-abicalls}"
  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     ".type"
 189 #define SIZE_ASM_OP     ".size"
 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 #define POPSECTION_ASM_OP       ".popsection"
 209
 210 #define DEBUG_INFO_SECTION      ".debug_info,0x7000001e,0,0,1"
 211 #define DEBUG_LINE_SECTION      ".debug_line,0x7000001e,0,0,1"
 212 #define SFNAMES_SECTION         ".debug_sfnames,0x7000001e,0,0,1"
 213 #define SRCINFO_SECTION         ".debug_srcinfo,0x7000001e,0,0,1"
 214 #define MACINFO_SECTION         ".debug_macinfo,0x7000001e,0,0,1"
 215 #define PUBNAMES_SECTION        ".debug_pubnames,0x7000001e,0,0,1"
 216 #define ARANGES_SECTION         ".debug_aranges,0x7000001e,0,0,1"
 217 #define FRAME_SECTION           ".debug_frame,0x7000001e,0x08000000,0,1"
 218 #define ABBREV_SECTION          ".debug_abbrev,0x7000001e,0,0,1"
 219
 220 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 221    on the mipsX option.  */
 222 /* If no mips[3,4] option given, give the appropriate default for mabi=X */
 223 #undef SUBTARGET_ASM_SPEC
 224 #define SUBTARGET_ASM_SPEC "%{!mabi*:-n32} %{!mips*: %{!mabi*:-mips3} %{mabi=n32:-mips3} %{mabi=64:-mips4}}"
 225
 226 /* Must pass -g0 to the assembler, otherwise it may overwrite our
 227    debug info with its own debug info. */
 228 /* Must pass -show instead of -v.  */
 229 /* Must pass -G 0 to the assembler, otherwise we may get warnings about
 230    GOT overflow.  */
 231 /* ??? We pass -w to disable all assembler warnings.  The `label should be
 232    inside .ent/.end block' warning that we get for DWARF II debug info labels
 233    is particularly annoying.  */
 234 #undef SUBTARGET_MIPS_AS_ASM_SPEC
 235 #define SUBTARGET_MIPS_AS_ASM_SPEC "%{v:-show} -G 0 -w"
 236
 237 #undef SUBTARGET_ASM_DEBUGGING_SPEC
 238 #define SUBTARGET_ASM_DEBUGGING_SPEC "-g0"
 239
 240 /* The MIPS assembler occasionally misoptimizes.  Since GCC should be
 241    doing scheduling anyhow, just turn off optimization in the assembler.  */
 242 #undef SUBTARGET_ASM_OPTIMIZING_SPEC
 243 #define SUBTARGET_ASM_OPTIMIZING_SPEC "-O0"
 244
 245 /* Stuff for constructors.  Start here.  */
 246
 247 /* The assembler now accepts .section pseudo-ops, but it does not allow
 248    one to change the section in the middle of a function, so we can't use
 249    the INIT_SECTION_ASM_OP code in crtstuff.  But we can build up the ctor
 250    and dtor lists this way, so we use -init and -fini to invoke the
 251    do_global_* functions instead of running collect2.  */
 252
 253 #define BSS_SECTION_ASM_OP      ".section\t.bss"
 254 #define CONST_SECTION_ASM_OP_32 "\t.rdata"
 255 #define CONST_SECTION_ASM_OP_64 ".section\t.rodata"
 256
 257 /* The IRIX 6 assembler .section directive takes four additional args:
 258    section type, flags, entry size, and alignment.  The alignment of the
 259    .ctors and .dtors sections needs to be the same as the size of a pointer
 260    so that the linker doesn't add padding between elements.  */
 261 #if defined (CRT_BEGIN) || defined (CRT_END)
 262
 263 /* If we are included from crtstuff.c, these need to be plain strings.
 264    _MIPS_SZPTR is defined in SUBTARGET_CPP_SPEC above.  */
 265 #if _MIPS_SZPTR == 64
 266 #define CTORS_SECTION_ASM_OP ".section\t.ctors,1,2,0,8"
 267 #define DTORS_SECTION_ASM_OP ".section\t.dtors,1,2,0,8"
 268 #else /* _MIPS_SZPTR != 64 */
 269 #define CTORS_SECTION_ASM_OP ".section\t.ctors,1,2,0,4"
 270 #define DTORS_SECTION_ASM_OP ".section\t.dtors,1,2,0,4"
 271 #endif /* _MIPS_SZPTR == 64 */
 272
 273 #else /* ! (defined (CRT_BEGIN) || defined (CRT_END)) */
 274
 275 /* If we are included from varasm.c, these need to depend on -mabi.  */
 276 #define CTORS_SECTION_ASM_OP \
 277   (Pmode == DImode ? ".section\t.ctors,1,2,0,8" : ".section\t.ctors,1,2,0,4")
 278 #define DTORS_SECTION_ASM_OP \
 279   (Pmode == DImode ? ".section\t.dtors,1,2,0,8" : ".section\t.dtors,1,2,0,4")
 280 #endif /* defined (CRT_BEGIN) || defined (CRT_END) */
 281
 282 /* dwarf2out will handle padding this data properly.  We definitely don't
 283    want it 8-byte aligned on n32.  */
 284 #define EH_FRAME_SECTION_ASM_OP ".section\t.eh_frame,1,2,0,1"
 285
 286 /* A default list of other sections which we might be "in" at any given
 287    time.  For targets that use additional sections (e.g. .tdesc) you
 288    should override this definition in the target-specific file which
 289    includes this file.  */
 290
 291 #undef EXTRA_SECTIONS
 292 #define EXTRA_SECTIONS in_sdata, in_rdata, in_const, in_ctors, in_dtors
 293
 294 /* A default list of extra section function definitions.  For targets
 295    that use additional sections (e.g. .tdesc) you should override this
 296    definition in the target-specific file which includes this file.  */
 297
 298 /* ??? rdata_section is now same as svr4 const_section.  */
 299
 300 #undef EXTRA_SECTION_FUNCTIONS
 301 #define EXTRA_SECTION_FUNCTIONS                                         \
 302 void                                                                    \
 303 sdata_section ()                                                        \
 304 {                                                                       \
 305   if (in_section != in_sdata)                                           \
 306     {                                                                   \
 307       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \
 308       in_section = in_sdata;                                            \
 309     }                                                                   \
 310 }                                                                       \
 311                                                                         \
 312 void                                                                    \
 313 rdata_section ()                                                        \
 314 {                                                                       \
 315   if (in_section != in_rdata)                                           \
 316     {                                                                   \
 317       if (mips_abi != ABI_32 && mips_abi != ABI_O64)                    \
 318         fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_64);        \
 319       else                                                              \
 320         fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP_32);        \
 321       in_section = in_rdata;                                            \
 322     }                                                                   \
 323 }                                                                       \
 324   CTORS_SECTION_FUNCTION                                                \
 325   DTORS_SECTION_FUNCTION
 326
 327 #define CTORS_SECTION_FUNCTION                                          \
 328 void                                                                    \
 329 ctors_section ()                                                        \
 330 {                                                                       \
 331   if (in_section != in_ctors)                                           \
 332     {                                                                   \
 333       fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP);             \
 334       in_section = in_ctors;                                            \
 335     }                                                                   \
 336 }
 337
 338 #define DTORS_SECTION_FUNCTION                                          \
 339 void                                                                    \
 340 dtors_section ()                                                        \
 341 {                                                                       \
 342   if (in_section != in_dtors)                                           \
 343     {                                                                   \
 344       fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP);             \
 345       in_section = in_dtors;                                            \
 346     }                                                                   \
 347 }
 348
 349 /* A C statement (sans semicolon) to output an element in the table of
 350    global constructors.  */
 351 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                               \
 352   do {                                                                  \
 353     ctors_section ();                                                   \
 354     fprintf (FILE, "\t%s\t ",                                           \
 355              (Pmode == DImode) ? ".dword" : ".word");                   \
 356     assemble_name (FILE, NAME);                                         \
 357     fprintf (FILE, "\n");                                               \
 358   } while (0)
 359
 360 /* A C statement (sans semicolon) to output an element in the table of
 361    global destructors.  */
 362 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                                \
 363   do {                                                                  \
 364     dtors_section ();                                                   \
 365     fprintf (FILE, "\t%s\t ",                                           \
 366              (Pmode == DImode) ? ".dword" : ".word");                   \
 367     assemble_name (FILE, NAME);                                         \
 368     fprintf (FILE, "\n");                                               \
 369   } while (0)
 370
 371 /* A C statement to output something to the assembler file to switch to section
 372    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
 373    NULL_TREE.  */
 374
 375 #define ASM_OUTPUT_SECTION_NAME(F, DECL, NAME, RELOC)                   \
 376 do {                                                                    \
 377   extern FILE *asm_out_text_file;                                       \
 378   if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL)                      \
 379     fprintf (asm_out_text_file, "\t.section %s,1,6,4,4\n", (NAME));     \
 380   else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC))               \
 381     fprintf (F, "\t.section %s,1,2,0,8\n", (NAME));                     \
 382   else                                                                  \
 383     fprintf (F, "\t.section %s,1,3,0,8\n", (NAME));                     \
 384 } while (0)
 385
 386 /* Stuff for constructors.  End here.  */
 387
 388 /* ??? Perhaps just include svr4.h in this file?  */
 389
 390 /* ??? SGI assembler may core dump when compiling with -g.
 391    Sometimes as succeeds, but then we get a linker error. (cmds.c in 072.sc)
 392    Getting rid of .file solves both problems.  */
 393 #undef ASM_OUTPUT_FILENAME
 394 #define ASM_OUTPUT_FILENAME(STREAM, NUM_SOURCE_FILENAMES, NAME) \
 395 do                                                              \
 396   {                                                             \
 397     fprintf (STREAM, "\t#.file\t%d ", NUM_SOURCE_FILENAMES);    \
 398     output_quoted_string (STREAM, NAME);                        \
 399     fputs ("\n", STREAM);                                       \
 400   }                                                             \
 401 while (0)
 402
 403 /* ??? SGI assembler gives warning whenever .lcomm is used.  */
 404 #undef ASM_OUTPUT_LOCAL
 405 #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGN)                \
 406 do                                                                         \
 407   {                                                                        \
 408     if (mips_abi != ABI_32 && mips_abi != ABI_O64)                         \
 409       {                                                                    \
 410         fprintf (STREAM, "%s\n", BSS_SECTION_ASM_OP);                      \
 411         mips_declare_object (STREAM, NAME, "", ":\n", 0);                  \
 412         ASM_OUTPUT_ALIGN (STREAM, floor_log2 (ALIGN / BITS_PER_UNIT));     \
 413         ASM_OUTPUT_SKIP (STREAM, SIZE);                                    \
 414         fprintf (STREAM, "\t%s\n", POPSECTION_ASM_OP);                     \
 415       }                                                                    \
 416     else                                                                   \
 417       mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (SIZE)); \
 418   }                                                                        \
 419 while (0)
 420
 421 /* A C statement (sans semicolon) to output to the stdio stream
 422    FILE the assembler definition of uninitialized global DECL named
 423    NAME whose size is SIZE bytes and alignment is ALIGN bytes.
 424    Try to use asm_output_aligned_bss to implement this macro.  */
 425
 426 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
 427   asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
 428
 429 /* Write the extra assembler code needed to declare an object properly.  */
 430
 431 #undef ASM_DECLARE_OBJECT_NAME
 432 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)                     \
 433 do                                                                      \
 434  {                                                                      \
 435    size_directive_output = 0;                                           \
 436    if (!flag_inhibit_size_directive && DECL_SIZE (DECL))        \
 437      {                                                                  \
 438        size_directive_output = 1;                                       \
 439        fprintf (STREAM, "\t%s\t ", SIZE_ASM_OP);                        \
 440        assemble_name (STREAM, NAME);                                    \
 441        fprintf (STREAM, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
 442      }                                                                  \
 443    mips_declare_object (STREAM, NAME, "", ":\n", 0);                    \
 444  }                                                                      \
 445 while (0)
 446
 447 /* Define the `__builtin_va_list' type for the ABI.  On Irix6, this
 448    type is `char *'.  */
 449 #undef BUILD_VA_LIST_TYPE
 450 #define BUILD_VA_LIST_TYPE(VALIST) \
 451   (VALIST) = build_pointer_type (char_type_node)
 452
 453 /* Output the size directive for a decl in rest_of_decl_compilation
 454    in the case where we did not do so before the initializer.
 455    Once we find the error_mark_node, we know that the value of
 456    size_directive_output was set
 457    by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
 458
 459 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 460 do {                                                                     \
 461      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 462      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 463          && ! AT_END && TOP_LEVEL                                        \
 464          && DECL_INITIAL (DECL) == error_mark_node                       \
 465          && !size_directive_output)                                      \
 466        {                                                                 \
 467          size_directive_output = 1;                                      \
 468          fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                         \
 469          assemble_name (FILE, name);                                     \
 470          fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL))); \
 471        }                                                                 \
 472    } while (0)
 473
 474 #undef LOCAL_LABEL_PREFIX
 475 #define LOCAL_LABEL_PREFIX ((mips_abi == ABI_32 || mips_abi == ABI_O64) \
 476                             ? "$" : ".")
 477
 478 /* Profiling is supported via libprof1.a not -lc_p as in Irix 3.  */
 479 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 480    on the mipsX option.  */
 481 #undef STARTFILE_SPEC
 482 #define STARTFILE_SPEC \
 483   "%{!static:%{!shared: \
 484      %{mabi=32:%{pg:gcrt1.o%s} \
 485        %{!pg:%{p:mcrt1.o%s libprof1.a%s}%{!p:crt1.o%s}}} \
 486      %{mabi=n32: \
 487        %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
 488          %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
 489            %{!p:/usr/lib32/mips4/crt1.o%s}}} \
 490        %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
 491          %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
 492            %{!p:/usr/lib32/mips3/crt1.o%s}}}} \
 493      %{mabi=64: \
 494        %{mips4:%{pg:/usr/lib64/mips4/gcrt1.o} \
 495          %{!pg:%{p:/usr/lib64/mips4/mcrt1.o /usr/lib64/mips4/libprof1.a} \
 496            %{!p:/usr/lib64/mips4/crt1.o}}} \
 497        %{!mips4:%{pg:/usr/lib64/mips3/gcrt1.o} \
 498          %{!pg:%{p:/usr/lib64/mips3/mcrt1.o /usr/lib64/mips3/libprof1.a} \
 499            %{!p:/usr/lib64/mips3/crt1.o}}}} \
 500      %{!mabi*: \
 501        %{mips4:%{pg:/usr/lib32/mips4/gcrt1.o%s} \
 502          %{!pg:%{p:/usr/lib32/mips4/mcrt1.o%s /usr/lib32/mips4/libprof1.a%s} \
 503            %{!p:/usr/lib32/mips4/crt1.o%s}}} \
 504        %{!mips4:%{pg:/usr/lib32/mips3/gcrt1.o%s} \
 505          %{!pg:%{p:/usr/lib32/mips3/mcrt1.o%s /usr/lib32/mips3/libprof1.a%s} \
 506            %{!p:/usr/lib32/mips3/crt1.o%s}}}}}} \
 507    %{static: \
 508      %{mabi=32:%{pg:/usr/lib/nonshared/gcrt1.o%s} \
 509        %{!pg:%{p:/usr/lib/nonshared/mcrt1.o%s /usr/lib/nonshared/libprof1.a%s} \
 510          %{!p:/usr/lib/nonshared/crt1.o%s}}} \
 511      %{mabi=n32: \
 512        %{mips4:%{pg:/usr/lib32/mips4/nonshared/gcrt1.o%s} \
 513          %{!pg:%{p:/usr/lib32/mips4/nonshared/mcrt1.o%s \
 514              /usr/lib32/mips4/nonshared/libprof1.a%s} \
 515            %{!p:/usr/lib32/mips4/nonshared/crt1.o%s}}} \
 516        %{!mips4:%{pg:/usr/lib32/mips3/nonshared/gcrt1.o%s} \
 517          %{!pg:%{p:/usr/lib32/mips3/nonshared/mcrt1.o%s \
 518              /usr/lib32/mips3/nonshared/libprof1.a%s} \
 519            %{!p:/usr/lib32/mips3/nonshared/crt1.o%s}}}} \
 520      %{mabi=64: \
 521        %{mips4:%{pg:/usr/lib64/mips4/nonshared/gcrt1.o} \
 522          %{!pg:%{p:/usr/lib64/mips4/nonshared/mcrt1.o \
 523              /usr/lib64/mips4/nonshared/libprof1.a} \
 524            %{!p:/usr/lib64/mips4/nonshared/crt1.o}}} \
 525        %{!mips4:%{pg:/usr/lib64/mips3/nonshared/gcrt1.o} \
 526          %{!pg:%{p:/usr/lib64/mips3/nonshared/mcrt1.o \
 527              /usr/lib64/mips3/nonshared/libprof1.a} \
 528            %{!p:/usr/lib64/mips3/nonshared/crt1.o}}}} \
 529      %{!mabi*: \
 530        %{mips4:%{pg:/usr/lib32/mips4/nonshared/gcrt1.o%s} \
 531          %{!pg:%{p:/usr/lib32/mips4/nonshared/mcrt1.o%s \
 532              /usr/lib32/mips4/nonshared/libprof1.a%s} \
 533            %{!p:/usr/lib32/mips4/nonshared/crt1.o%s}}} \
 534        %{!mips4:%{pg:/usr/lib32/mips3/nonshared/gcrt1.o%s} \
 535          %{!pg:%{p:/usr/lib32/mips3/nonshared/mcrt1.o%s \
 536            /usr/lib32/mips3/nonshared/libprof1.a%s} \
 537          %{!pg:%{p:/usr/lib32/mips3/nonshared/mcrt1.o%s \
 538              /usr/lib32/mips3/nonshared/libprof1.a%s} \
 539            %{!p:/usr/lib32/mips3/nonshared/crt1.o%s}}}}}} \
 540    crtbegin.o%s"
 541
 542 #undef LIB_SPEC
 543 #define LIB_SPEC \
 544   "%{mabi=n32: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
 545      -L/usr/lib32} \
 546    %{mabi=64: %{mips4:-L/usr/lib64/mips4} %{!mips4:-L/usr/lib64/mips3} \
 547      -L/usr/lib64} \
 548    %{!mabi*: %{mips4:-L/usr/lib32/mips4} %{!mips4:-L/usr/lib32/mips3} \
 549      -L/usr/lib32} \
 550    %{!shared: \
 551      -dont_warn_unused %{p:libprof1.a%s}%{pg:libprof1.a%s} -lc -warn_unused}"
 552
 553 /* Avoid getting two warnings for libgcc.a everytime we link.  */
 554 #undef LIBGCC_SPEC
 555 #define LIBGCC_SPEC "-dont_warn_unused -lgcc -warn_unused"
 556
 557 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 558    on the mipsX option.  */
 559 #undef ENDFILE_SPEC
 560 #define ENDFILE_SPEC \
 561   "crtend.o%s \
 562    %{!shared: \
 563      %{mabi=32:crtn.o%s}\
 564      %{mabi=n32:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 565        %{!mips4:/usr/lib32/mips3/crtn.o%s}}\
 566      %{mabi=64:%{mips4:/usr/lib64/mips4/crtn.o%s}\
 567        %{!mips4:/usr/lib64/mips3/crtn.o%s}}\
 568      %{!mabi*:%{mips4:/usr/lib32/mips4/crtn.o%s}\
 569        %{!mips4:/usr/lib32/mips3/crtn.o%s}}}"
 570
 571 /* ??? If no mabi=X option give, but a mipsX option is, then should depend
 572    on the mipsX option.  */
 573 #undef LINK_SPEC
 574 #define LINK_SPEC "\
 575 %{G*} %{EB} %{EL} %{mips1} %{mips2} %{mips3} %{mips4} \
 576 %{bestGnum} %{shared} %{non_shared} \
 577 %{call_shared} %{no_archive} %{exact_version} %{w} \
 578 %{static: -non_shared} \
 579 %{!static: \
 580   %{!shared: %{!non_shared: %{!call_shared: -call_shared -no_unresolved}}}} \
 581 %{rpath} -init __do_global_ctors -fini __do_global_dtors \
 582 %{shared:-hidden_symbol __do_global_ctors,__do_global_dtors,__EH_FRAME_BEGIN__,__frame_dummy} \
 583 -_SYSTYPE_SVR4 -woff 131 \
 584 %{mabi=32: -32}%{mabi=n32: -n32}%{mabi=64: -64}%{!mabi*: -n32}"