gcc/config/rs6000/sysv4.h

   1 /* Target definitions for GNU compiler for PowerPC running System V.4
   2    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
   3    Free Software Foundation, Inc.
   4    Contributed by Cygnus Support.
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU CC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU CC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23
  24 /* Yes!  We are ELF.  */
  25 #define TARGET_OBJECT_FORMAT OBJECT_ELF
  26
  27 /* Default ABI to compile code for.  */
  28 #define DEFAULT_ABI rs6000_current_abi
  29
  30 /* Default ABI to use.  */
  31 #define RS6000_ABI_NAME "sysv"
  32
  33 /* Override rs6000.h definition.  */
  34 #undef  ASM_DEFAULT_SPEC
  35 #define ASM_DEFAULT_SPEC "-mppc"
  36
  37 /* Small data support types.  */
  38 enum rs6000_sdata_type {
  39   SDATA_NONE,                   /* No small data support.  */
  40   SDATA_DATA,                   /* Just put data in .sbss/.sdata, don't use relocs.  */
  41   SDATA_SYSV,                   /* Use r13 to point to .sdata/.sbss.  */
  42   SDATA_EABI                    /* Use r13 like above, r2 points to .sdata2/.sbss2.  */
  43 };
  44
  45 extern enum rs6000_sdata_type rs6000_sdata;
  46
  47 /* V.4/eabi switches.  */
  48 #define MASK_NO_BITFIELD_TYPE   0x40000000      /* Set PCC_BITFIELD_TYPE_MATTERS to 0.  */
  49 #define MASK_STRICT_ALIGN       0x20000000      /* Set STRICT_ALIGNMENT to 1.  */
  50 #define MASK_RELOCATABLE        0x10000000      /* GOT pointers are PC relative.  */
  51 #define MASK_EABI               0x08000000      /* Adhere to eabi, not System V spec.  */
  52 #define MASK_LITTLE_ENDIAN      0x04000000      /* Target is little endian.  */
  53 #define MASK_REGNAMES           0x02000000      /* Use alternate register names.  */
  54 #define MASK_PROTOTYPE          0x01000000      /* Only prototyped fcns pass variable args.  */
  55 #define MASK_NO_BITFIELD_WORD   0x00800000      /* Bitfields cannot cross word boundaries */
  56
  57 #define TARGET_NO_BITFIELD_TYPE (target_flags & MASK_NO_BITFIELD_TYPE)
  58 #define TARGET_STRICT_ALIGN     (target_flags & MASK_STRICT_ALIGN)
  59 #define TARGET_RELOCATABLE      (target_flags & MASK_RELOCATABLE)
  60 #define TARGET_EABI             (target_flags & MASK_EABI)
  61 #define TARGET_LITTLE_ENDIAN    (target_flags & MASK_LITTLE_ENDIAN)
  62 #define TARGET_REGNAMES         (target_flags & MASK_REGNAMES)
  63 #define TARGET_PROTOTYPE        (target_flags & MASK_PROTOTYPE)
  64 #define TARGET_NO_BITFIELD_WORD (target_flags & MASK_NO_BITFIELD_WORD)
  65 #define TARGET_TOC              ((target_flags & MASK_64BIT)            \
  66                                  || ((target_flags & (MASK_RELOCATABLE  \
  67                                                       | MASK_MINIMAL_TOC)) \
  68                                      && flag_pic > 1)                   \
  69                                  || DEFAULT_ABI == ABI_AIX)
  70
  71 #define TARGET_BITFIELD_TYPE    (! TARGET_NO_BITFIELD_TYPE)
  72 #define TARGET_BIG_ENDIAN       (! TARGET_LITTLE_ENDIAN)
  73 #define TARGET_NO_PROTOTYPE     (! TARGET_PROTOTYPE)
  74 #define TARGET_NO_TOC           (! TARGET_TOC)
  75 #define TARGET_NO_EABI          (! TARGET_EABI)
  76
  77 /* Strings provided by SUBTARGET_OPTIONS */
  78 extern const char *rs6000_abi_name;
  79 extern const char *rs6000_sdata_name;
  80
  81 /* Override rs6000.h definition.  */
  82 #undef  SUBTARGET_OPTIONS
  83 #define SUBTARGET_OPTIONS                                               \
  84   { "call-",  &rs6000_abi_name, N_("Select ABI calling convention") },  \
  85   { "sdata=", &rs6000_sdata_name, N_("Select method for sdata handling") }
  86
  87 /* Max # of bytes for variables to automatically be put into the .sdata
  88    or .sdata2 sections.  */
  89 extern int g_switch_value;              /* Value of the -G xx switch.  */
  90 extern int g_switch_set;                /* Whether -G xx was passed.  */
  91
  92 #define SDATA_DEFAULT_SIZE 8
  93
  94 /* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be just
  95    the same as -mminimal-toc.  */
  96 /* Override rs6000.h definition.  */
  97 #undef  SUBTARGET_SWITCHES
  98 #define SUBTARGET_SWITCHES                                              \
  99   { "bit-align",        -MASK_NO_BITFIELD_TYPE,                         \
 100     N_("Align to the base type of the bit-field") },                    \
 101   { "no-bit-align",      MASK_NO_BITFIELD_TYPE,                         \
 102     N_("Don't align to the base type of the bit-field") },              \
 103   { "strict-align",      MASK_STRICT_ALIGN,                             \
 104     N_("Don't assume that unaligned accesses are handled by the system") }, \
 105   { "no-strict-align",  -MASK_STRICT_ALIGN,                             \
 106     N_("Assume that unaligned accesses are handled by the system") },   \
 107   { "relocatable",       MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
 108     N_("Produce code relocatable at runtime") },                        \
 109   { "no-relocatable",   -MASK_RELOCATABLE,                              \
 110     N_("Don't produce code relocatable at runtime") },                  \
 111   { "relocatable-lib",   MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
 112     N_("Produce code relocatable at runtime") },                        \
 113   { "no-relocatable-lib", -MASK_RELOCATABLE,                            \
 114     N_("Don't produce code relocatable at runtime") },                  \
 115   { "little-endian",     MASK_LITTLE_ENDIAN,                            \
 116     N_("Produce little endian code") },                                 \
 117   { "little",            MASK_LITTLE_ENDIAN,                            \
 118     N_("Produce little endian code") },                                 \
 119   { "big-endian",       -MASK_LITTLE_ENDIAN,                            \
 120     N_("Produce big endian code") },                                    \
 121   { "big",              -MASK_LITTLE_ENDIAN,                            \
 122     N_("Produce big endian code") },                                    \
 123   { "no-toc",            0, N_("no description yet") },                 \
 124   { "toc",               MASK_MINIMAL_TOC, N_("no description yet") },  \
 125   { "full-toc",          MASK_MINIMAL_TOC, N_("no description yet") },  \
 126   { "prototype",         MASK_PROTOTYPE, N_("no description yet") },    \
 127   { "no-prototype",     -MASK_PROTOTYPE, N_("no description yet") },    \
 128   { "no-traceback",      0, N_("no description yet") },                 \
 129   { "eabi",              MASK_EABI, N_("Use EABI") },                   \
 130   { "no-eabi",          -MASK_EABI, N_("Don't use EABI") },             \
 131   { "bit-word",         -MASK_NO_BITFIELD_WORD, "" },                   \
 132   { "no-bit-word",       MASK_NO_BITFIELD_WORD,                         \
 133     N_("Do not allow bit-fields to cross word boundaries") },           \
 134   { "regnames",           MASK_REGNAMES,                                \
 135     N_("Use alternate register names") },                               \
 136   { "no-regnames",       -MASK_REGNAMES,                                \
 137     N_("Don't use alternate register names") },                         \
 138   { "sdata",             0, N_("no description yet") },                 \
 139   { "no-sdata",          0, N_("no description yet") },                 \
 140   { "sim",               0,                                             \
 141     N_("Link with libsim.a, libc.a and sim-crt0.o") },                  \
 142   { "ads",               0,                                             \
 143     N_("Link with libads.a, libc.a and crt0.o") },                      \
 144   { "yellowknife",       0,                                             \
 145     N_("Link with libyk.a, libc.a and crt0.o") },                       \
 146   { "mvme",              0,                                             \
 147     N_("Link with libmvme.a, libc.a and crt0.o") },                     \
 148   { "emb",               0,                                             \
 149     N_("Set the PPC_EMB bit in the ELF flags header") },                \
 150   { "vxworks",           0, N_("no description yet") },                 \
 151   { "windiss",           0, N_("Use the WindISS simulator") },          \
 152   { "shlib",             0, N_("no description yet") },                 \
 153   EXTRA_SUBTARGET_SWITCHES                                              \
 154   { "newlib",            0, N_("no description yet") },
 155
 156 /* This is meant to be redefined in the host dependent files.  */
 157 #define EXTRA_SUBTARGET_SWITCHES
 158
 159 /* Sometimes certain combinations of command options do not make sense
 160    on a particular target machine.  You can define a macro
 161    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
 162    defined, is executed once just after all the command options have
 163    been parsed.
 164
 165    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
 166    get control.  */
 167
 168 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
 169 do {                                                                    \
 170   if (!g_switch_set)                                                    \
 171     g_switch_value = SDATA_DEFAULT_SIZE;                                \
 172                                                                         \
 173   if (!strcmp (rs6000_abi_name, "sysv"))                                \
 174     rs6000_current_abi = ABI_V4;                                        \
 175   else if (!strcmp (rs6000_abi_name, "sysv-noeabi"))                    \
 176     {                                                                   \
 177       rs6000_current_abi = ABI_V4;                                      \
 178       target_flags &= ~ MASK_EABI;                                      \
 179     }                                                                   \
 180   else if (!strcmp (rs6000_abi_name, "sysv-eabi")                       \
 181            || !strcmp (rs6000_abi_name, "eabi"))                        \
 182     {                                                                   \
 183       rs6000_current_abi = ABI_V4;                                      \
 184       target_flags |= MASK_EABI;                                        \
 185     }                                                                   \
 186   else if (!strcmp (rs6000_abi_name, "aix"))                            \
 187     {                                                                   \
 188       rs6000_current_abi = ABI_AIX_NODESC;                              \
 189       target_flags |= MASK_EABI;                                        \
 190     }                                                                   \
 191   else if (!strcmp (rs6000_abi_name, "aixdesc"))                        \
 192     rs6000_current_abi = ABI_AIX;                                       \
 193   else if (!strcmp (rs6000_abi_name, "freebsd"))                        \
 194     rs6000_current_abi = ABI_V4;                                        \
 195   else if (!strcmp (rs6000_abi_name, "linux"))                          \
 196     rs6000_current_abi = ABI_V4;                                        \
 197   else if (!strcmp (rs6000_abi_name, "gnu"))                            \
 198     rs6000_current_abi = ABI_V4;                                        \
 199   else if (!strcmp (rs6000_abi_name, "netbsd"))                         \
 200     rs6000_current_abi = ABI_V4;                                        \
 201   else if (!strcmp (rs6000_abi_name, "i960-old"))                       \
 202     {                                                                   \
 203       rs6000_current_abi = ABI_V4;                                      \
 204       target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI                   \
 205                        | MASK_NO_BITFIELD_WORD);                        \
 206       target_flags &= ~MASK_STRICT_ALIGN;                               \
 207     }                                                                   \
 208   else                                                                  \
 209     {                                                                   \
 210       rs6000_current_abi = ABI_V4;                                      \
 211       error ("bad value for -mcall-%s", rs6000_abi_name);               \
 212     }                                                                   \
 213                                                                         \
 214   if (rs6000_sdata_name)                                                \
 215     {                                                                   \
 216       if (!strcmp (rs6000_sdata_name, "none"))                          \
 217         rs6000_sdata = SDATA_NONE;                                      \
 218       else if (!strcmp (rs6000_sdata_name, "data"))                     \
 219         rs6000_sdata = SDATA_DATA;                                      \
 220       else if (!strcmp (rs6000_sdata_name, "default"))                  \
 221         rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV;         \
 222       else if (!strcmp (rs6000_sdata_name, "sysv"))                     \
 223         rs6000_sdata = SDATA_SYSV;                                      \
 224       else if (!strcmp (rs6000_sdata_name, "eabi"))                     \
 225         rs6000_sdata = SDATA_EABI;                                      \
 226       else                                                              \
 227         error ("bad value for -msdata=%s", rs6000_sdata_name);          \
 228     }                                                                   \
 229   else if (DEFAULT_ABI == ABI_V4)                                       \
 230     {                                                                   \
 231       rs6000_sdata = SDATA_DATA;                                        \
 232       rs6000_sdata_name = "data";                                       \
 233     }                                                                   \
 234   else                                                                  \
 235     {                                                                   \
 236       rs6000_sdata = SDATA_NONE;                                        \
 237       rs6000_sdata_name = "none";                                       \
 238     }                                                                   \
 239                                                                         \
 240   if (TARGET_RELOCATABLE &&                                             \
 241       (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))       \
 242     {                                                                   \
 243       rs6000_sdata = SDATA_DATA;                                        \
 244       error ("-mrelocatable and -msdata=%s are incompatible",           \
 245              rs6000_sdata_name);                                        \
 246     }                                                                   \
 247                                                                         \
 248   else if (flag_pic &&                                                  \
 249            (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))  \
 250     {                                                                   \
 251       rs6000_sdata = SDATA_DATA;                                        \
 252       error ("-f%s and -msdata=%s are incompatible",                    \
 253              (flag_pic > 1) ? "PIC" : "pic",                            \
 254              rs6000_sdata_name);                                        \
 255     }                                                                   \
 256                                                                         \
 257   if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4)              \
 258     {                                                                   \
 259       rs6000_sdata = SDATA_NONE;                                        \
 260       error ("-msdata=%s and -mcall-%s are incompatible",               \
 261              rs6000_sdata_name, rs6000_abi_name);                       \
 262     }                                                                   \
 263                                                                         \
 264   if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC)                        \
 265     {                                                                   \
 266       target_flags |= MASK_MINIMAL_TOC;                                 \
 267       error ("-mrelocatable and -mno-minimal-toc are incompatible");    \
 268     }                                                                   \
 269                                                                         \
 270   if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX)              \
 271     {                                                                   \
 272       target_flags &= ~MASK_RELOCATABLE;                                \
 273       error ("-mrelocatable and -mcall-%s are incompatible",            \
 274              rs6000_abi_name);                                          \
 275     }                                                                   \
 276                                                                         \
 277   if (flag_pic > 1 && rs6000_current_abi == ABI_AIX)                    \
 278     {                                                                   \
 279       flag_pic = 0;                                                     \
 280       error ("-fPIC and -mcall-%s are incompatible",                    \
 281              rs6000_abi_name);                                          \
 282     }                                                                   \
 283                                                                         \
 284   if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN)            \
 285     {                                                                   \
 286       target_flags &= ~MASK_LITTLE_ENDIAN;                              \
 287       error ("-mcall-aixdesc must be big endian");                      \
 288     }                                                                   \
 289                                                                         \
 290   /* Treat -fPIC the same as -mrelocatable.  */                         \
 291   if (flag_pic > 1)                                                     \
 292     target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
 293                                                                         \
 294   else if (TARGET_RELOCATABLE)                                          \
 295     flag_pic = 2;                                                       \
 296                                                                         \
 297 } while (0)
 298
 299
 300 /* Override rs6000.h definition.  */
 301 #undef  TARGET_DEFAULT
 302 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
 303
 304 /* Override rs6000.h definition.  */
 305 #undef  PROCESSOR_DEFAULT
 306 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
 307
 308 #define FIXED_R2 1
 309 /* System V.4 uses register 13 as a pointer to the small data area,
 310    so it is not available to the normal user.  */
 311 #define FIXED_R13 1
 312
 313 /* Size of the V.4 varargs area if needed.  */
 314 /* Override rs6000.h definition.  */
 315 #undef  RS6000_VARARGS_AREA
 316 #define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
 317
 318 /* Override default big endianism definitions in rs6000.h.  */
 319 #undef  BYTES_BIG_ENDIAN
 320 #undef  WORDS_BIG_ENDIAN
 321 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
 322 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
 323
 324 /* Define this to set the endianness to use in libgcc2.c, which can
 325    not depend on target_flags.  */
 326 #if !defined(_LITTLE_ENDIAN) && !defined(__sun__)
 327 #define LIBGCC2_WORDS_BIG_ENDIAN 1
 328 #else
 329 #define LIBGCC2_WORDS_BIG_ENDIAN 0
 330 #endif
 331
 332 /* Define cutoff for using external functions to save floating point.
 333    Currently on V.4, always use inline stores.  */
 334 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
 335
 336 /* Put jump tables in read-only memory, rather than in .text.  */
 337 #define JUMP_TABLES_IN_TEXT_SECTION 0
 338
 339 /* Prefix and suffix to use to saving floating point.  */
 340 #define SAVE_FP_PREFIX "_savefpr_"
 341 #define SAVE_FP_SUFFIX "_l"
 342
 343 /* Prefix and suffix to use to restoring floating point.  */
 344 #define RESTORE_FP_PREFIX "_restfpr_"
 345 #define RESTORE_FP_SUFFIX "_l"
 346
 347 /* Type used for ptrdiff_t, as a string used in a declaration.  */
 348 #define PTRDIFF_TYPE "int"
 349
 350 /* Type used for wchar_t, as a string used in a declaration.  */
 351 /* Override svr4.h definition.  */
 352 #undef  WCHAR_TYPE
 353 #define WCHAR_TYPE "long int"
 354
 355 /* Width of wchar_t in bits.  */
 356 /* Override svr4.h definition.  */
 357 #undef  WCHAR_TYPE_SIZE
 358 #define WCHAR_TYPE_SIZE 32
 359
 360 /* Make int foo : 8 not cause structures to be aligned to an int boundary.  */
 361 /* Override elfos.h definition.  */
 362 #undef  PCC_BITFIELD_TYPE_MATTERS
 363 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
 364
 365 #undef  BITFIELD_NBYTES_LIMITED
 366 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
 367
 368 /* Define this macro to be the value 1 if instructions will fail to
 369    work if given data not on the nominal alignment.  If instructions
 370    will merely go slower in that case, define this macro as 0.  */
 371 #undef  STRICT_ALIGNMENT
 372 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
 373
 374 /* Alignment in bits of the stack boundary.  Note, in order to allow building
 375    one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
 376    versions, just use 64 as the stack boundary.  */
 377 #undef  STACK_BOUNDARY
 378 #define STACK_BOUNDARY  (TARGET_ALTIVEC_ABI ? 128 : 64)
 379
 380 /* Real stack boundary as mandated by the appropriate ABI.  */
 381 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
 382
 383 /* An expression for the alignment of a structure field FIELD if the
 384    alignment computed in the usual way is COMPUTED.  */
 385 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED)                                   \
 386         ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE)     \
 387          ? 128 : COMPUTED)
 388
 389 /* Define this macro as an expression for the alignment of a type
 390    (given by TYPE as a tree node) if the alignment computed in the
 391    usual way is COMPUTED and the alignment explicitly specified was
 392    SPECIFIED.  */
 393 #define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED)                     \
 394         ((TARGET_ALTIVEC  && TREE_CODE (TYPE) == VECTOR_TYPE)           \
 395          ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128)                     \
 396          : MAX (COMPUTED, SPECIFIED))
 397
 398 #undef  BIGGEST_FIELD_ALIGNMENT
 399 #undef  ADJUST_FIELD_ALIGN
 400
 401 /* Use ELF style section commands.  */
 402
 403 #define TEXT_SECTION_ASM_OP     "\t.section\t\".text\""
 404
 405 #define DATA_SECTION_ASM_OP     "\t.section\t\".data\""
 406
 407 #define BSS_SECTION_ASM_OP      "\t.section\t\".bss\""
 408
 409 /* Override elfos.h definition.  */
 410 #undef  INIT_SECTION_ASM_OP
 411 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
 412
 413 /* Override elfos.h definition.  */
 414 #undef  FINI_SECTION_ASM_OP
 415 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
 416
 417 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
 418
 419 /* Put PC relative got entries in .got2.  */
 420 #define MINIMAL_TOC_SECTION_ASM_OP \
 421   ((TARGET_RELOCATABLE || flag_pic) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
 422
 423 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
 424 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
 425 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
 426
 427 /* Besides the usual ELF sections, we need a toc section.  */
 428 /* Override elfos.h definition.  */
 429 #undef  EXTRA_SECTIONS
 430 #define EXTRA_SECTIONS in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
 431
 432 /* Override elfos.h definition.  */
 433 #undef  EXTRA_SECTION_FUNCTIONS
 434 #define EXTRA_SECTION_FUNCTIONS                                         \
 435   TOC_SECTION_FUNCTION                                                  \
 436   SDATA_SECTION_FUNCTION                                                \
 437   SDATA2_SECTION_FUNCTION                                               \
 438   SBSS_SECTION_FUNCTION                                                 \
 439   INIT_SECTION_FUNCTION                                                 \
 440   FINI_SECTION_FUNCTION
 441
 442 #define TOC_SECTION_FUNCTION                                            \
 443 void                                                                    \
 444 toc_section ()                                                          \
 445 {                                                                       \
 446   if (in_section != in_toc)                                             \
 447     {                                                                   \
 448       in_section = in_toc;                                              \
 449       if (DEFAULT_ABI == ABI_AIX                                        \
 450           && TARGET_MINIMAL_TOC                                         \
 451           && !TARGET_RELOCATABLE)                                       \
 452         {                                                               \
 453           if (! toc_initialized)                                        \
 454             {                                                           \
 455               toc_initialized = 1;                                      \
 456               fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);       \
 457               ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LCTOC", 0);     \
 458               fprintf (asm_out_file, "\t.tc ");                         \
 459               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
 460               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 461               fprintf (asm_out_file, "\n");                             \
 462                                                                         \
 463               fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 464               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 465               fprintf (asm_out_file, " = .+32768\n");                   \
 466             }                                                           \
 467           else                                                          \
 468             fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 469         }                                                               \
 470       else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE)           \
 471         fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);             \
 472       else                                                              \
 473         {                                                               \
 474           fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);   \
 475           if (! toc_initialized)                                        \
 476             {                                                           \
 477               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 478               fprintf (asm_out_file, " = .+32768\n");                   \
 479               toc_initialized = 1;                                      \
 480             }                                                           \
 481         }                                                               \
 482     }                                                                   \
 483 }                                                                       \
 484                                                                         \
 485 extern int in_toc_section PARAMS ((void));                              \
 486 int in_toc_section ()                                                   \
 487 {                                                                       \
 488   return in_section == in_toc;                                          \
 489 }
 490
 491 #define SDATA_SECTION_FUNCTION                                          \
 492 void                                                                    \
 493 sdata_section ()                                                        \
 494 {                                                                       \
 495   if (in_section != in_sdata)                                           \
 496     {                                                                   \
 497       in_section = in_sdata;                                            \
 498       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \
 499     }                                                                   \
 500 }
 501
 502 #define SDATA2_SECTION_FUNCTION                                         \
 503 void                                                                    \
 504 sdata2_section ()                                                       \
 505 {                                                                       \
 506   if (in_section != in_sdata2)                                          \
 507     {                                                                   \
 508       in_section = in_sdata2;                                           \
 509       fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP);            \
 510     }                                                                   \
 511 }
 512
 513 #define SBSS_SECTION_FUNCTION                                           \
 514 void                                                                    \
 515 sbss_section ()                                                         \
 516 {                                                                       \
 517   if (in_section != in_sbss)                                            \
 518     {                                                                   \
 519       in_section = in_sbss;                                             \
 520       fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP);              \
 521     }                                                                   \
 522 }
 523
 524 #define INIT_SECTION_FUNCTION                                           \
 525 void                                                                    \
 526 init_section ()                                                         \
 527 {                                                                       \
 528   if (in_section != in_init)                                            \
 529     {                                                                   \
 530       in_section = in_init;                                             \
 531       fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP);              \
 532     }                                                                   \
 533 }
 534
 535 #define FINI_SECTION_FUNCTION                                           \
 536 void                                                                    \
 537 fini_section ()                                                         \
 538 {                                                                       \
 539   if (in_section != in_fini)                                            \
 540     {                                                                   \
 541       in_section = in_fini;                                             \
 542       fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP);              \
 543     }                                                                   \
 544 }
 545
 546 /* Override default elf definitions.  */
 547 #undef  TARGET_ASM_SELECT_RTX_SECTION
 548 #define TARGET_ASM_SELECT_RTX_SECTION rs6000_elf_select_rtx_section
 549 #undef  TARGET_ASM_SELECT_SECTION
 550 #define TARGET_ASM_SELECT_SECTION  rs6000_elf_select_section
 551 #define TARGET_ASM_UNIQUE_SECTION  rs6000_elf_unique_section
 552
 553 /* Return non-zero if this entry is to be written into the constant pool
 554    in a special way.  We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
 555    containing one of them.  If -mfp-in-toc (the default), we also do
 556    this for floating-point constants.  We actually can only do this
 557    if the FP formats of the target and host machines are the same, but
 558    we can't check that since not every file that uses
 559    GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
 560
 561    Unlike AIX, we don't key off of -mminimal-toc, but instead do not
 562    allow floating point constants in the TOC if -mrelocatable.  */
 563
 564 #undef  ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
 565 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE)                        \
 566   (TARGET_TOC                                                           \
 567    && (GET_CODE (X) == SYMBOL_REF                                       \
 568        || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS      \
 569            && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF)           \
 570        || GET_CODE (X) == LABEL_REF                                     \
 571        || (GET_CODE (X) == CONST_INT                                    \
 572            && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode))      \
 573        || (!TARGET_NO_FP_IN_TOC                                         \
 574            && !TARGET_RELOCATABLE                                       \
 575            && GET_CODE (X) == CONST_DOUBLE                              \
 576            && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT               \
 577            && BITS_PER_WORD == HOST_BITS_PER_INT)))
 578
 579 /* These macros generate the special .type and .size directives which
 580    are used to set the corresponding fields of the linker symbol table
 581    entries in an ELF object file under SVR4.  These macros also output
 582    the starting labels for the relevant functions/objects.  */
 583
 584 /* Write the extra assembler code needed to declare a function properly.
 585    Some svr4 assemblers need to also have something extra said about the
 586    function's return value.  We allow for that here.  */
 587
 588 extern int rs6000_pic_labelno;
 589
 590 /* Override elfos.h definition.  */
 591 #undef  ASM_DECLARE_FUNCTION_NAME
 592 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 593   do {                                                                  \
 594     const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long";    \
 595                                                                         \
 596     if (TARGET_RELOCATABLE                                              \
 597         && (get_pool_size () != 0 || current_function_profile)          \
 598         && uses_TOC())                                                  \
 599       {                                                                 \
 600         char buf[256];                                                  \
 601                                                                         \
 602         ASM_OUTPUT_INTERNAL_LABEL (FILE, "LCL", rs6000_pic_labelno);    \
 603                                                                         \
 604         ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1);                  \
 605         fprintf (FILE, "\t%s ", init_ptr);                              \
 606         assemble_name (FILE, buf);                                      \
 607         putc ('-', FILE);                                               \
 608         ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno);   \
 609         assemble_name (FILE, buf);                                      \
 610         putc ('\n', FILE);                                              \
 611       }                                                                 \
 612                                                                         \
 613     ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");                 \
 614     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
 615                                                                         \
 616     if (DEFAULT_ABI == ABI_AIX)                                         \
 617       {                                                                 \
 618         const char *desc_name, *orig_name;                              \
 619                                                                         \
 620         orig_name = (*targetm.strip_name_encoding) (NAME);              \
 621         desc_name = orig_name;                                          \
 622         while (*desc_name == '.')                                       \
 623           desc_name++;                                                  \
 624                                                                         \
 625         if (TREE_PUBLIC (DECL))                                         \
 626           fprintf (FILE, "\t.globl %s\n", desc_name);                   \
 627                                                                         \
 628         fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);             \
 629         fprintf (FILE, "%s:\n", desc_name);                             \
 630         fprintf (FILE, "\t%s %s\n", init_ptr, orig_name);               \
 631         fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr);       \
 632         if (DEFAULT_ABI == ABI_AIX)                                     \
 633           fprintf (FILE, "\t%s 0\n", init_ptr);                         \
 634         fprintf (FILE, "\t.previous\n");                                \
 635       }                                                                 \
 636     ASM_OUTPUT_LABEL (FILE, NAME);                                      \
 637   } while (0)
 638
 639 /* A C compound statement that outputs the assembler code for a thunk function,
 640     used to implement C++ virtual function calls with multiple inheritance.  The
 641     thunk acts as a wrapper around a virtual function, adjusting the implicit
 642     object parameter before handing control off to the real function.
 643
 644     First, emit code to add the integer DELTA to the location that contains the
 645     incoming first argument.  Assume that this argument contains a pointer, and
 646     is the one used to pass the this' pointer in C++.  This is the incoming
 647     argument *before* the function prologue, e.g. %o0' on a sparc.  The
 648     addition must preserve the values of all other incoming arguments.
 649
 650     After the addition, emit code to jump to FUNCTION, which is a
 651     FUNCTION_DECL'.  This is a direct pure jump, not a call, and does not touch
 652     the return address.  Hence returning from FUNCTION will return to whoever
 653     called the current thunk'.
 654
 655     The effect must be as if FUNCTION had been called directly with the adjusted
 656     first argument.  This macro is responsible for emitting all of the code for
 657     a thunk function; FUNCTION_PROLOGUE' and FUNCTION_EPILOGUE' are not
 658     invoked.
 659
 660     The THUNK_FNDECL is redundant.  (DELTA and FUNCTION have already been
 661     extracted from it.)  It might possibly be useful on some targets, but
 662     probably not.
 663
 664     If you do not define this macro, the target-independent code in the C++
 665     frontend will generate a less efficient heavyweight thunk that calls
 666     FUNCTION instead of jumping to it.  The generic approach does not support
 667     varargs.  */
 668
 669 #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
 670   output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
 671
 672 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
 673    flag.  The LOCAL_LABEL_PREFIX variable is used by dbxelf.h.  */
 674
 675 #define LOCAL_LABEL_PREFIX "."
 676 #define USER_LABEL_PREFIX ""
 677
 678 /* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL.  */
 679
 680 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)   \
 681   asm_fprintf (FILE, "%L%s", PREFIX)
 682
 683 /* This is how to output a command to make the user-level label named NAME
 684    defined for reference from other files.  */
 685
 686 #define ASM_GLOBALIZE_LABEL(FILE,NAME)  \
 687   do { fputs ("\t.globl ", FILE);       \
 688        assemble_name (FILE, NAME); putc ('\n', FILE);} while (0)
 689
 690 /* This says how to output assembler code to declare an
 691    uninitialized internal linkage data object.  Under SVR4,
 692    the linker seems to want the alignment of data objects
 693    to depend on their types.  We do exactly that here.  */
 694
 695 #define LOCAL_ASM_OP    "\t.local\t"
 696
 697 #define LCOMM_ASM_OP    "\t.lcomm\t"
 698
 699 /* Override elfos.h definition.  */
 700 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 701 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 702 do {                                                                    \
 703   if (rs6000_sdata != SDATA_NONE && (SIZE) > 0                          \
 704       && (SIZE) <= g_switch_value)                                      \
 705     {                                                                   \
 706       sbss_section ();                                                  \
 707       ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));      \
 708       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 709       ASM_OUTPUT_SKIP (FILE, SIZE);                                     \
 710       if (!flag_inhibit_size_directive && (SIZE) > 0)                   \
 711         ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE);                   \
 712     }                                                                   \
 713   else                                                                  \
 714     {                                                                   \
 715       fprintf (FILE, "%s", LCOMM_ASM_OP);                               \
 716       assemble_name ((FILE), (NAME));                                   \
 717       fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT);    \
 718     }                                                                   \
 719 } while (0)
 720
 721 /* Describe how to emit uninitialized external linkage items.  */
 722 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 723 do {                                                                    \
 724   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
 725   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 726 } while (0)
 727
 728 /* This is how to output code to push a register on the stack.
 729    It need not be very fast code.
 730
 731    On the rs6000, we must keep the backchain up to date.  In order
 732    to simplify things, always allocate 16 bytes for a push (System V
 733    wants to keep stack aligned to a 16 byte boundary).  */
 734
 735 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO)                                \
 736 do {                                                                    \
 737   if (DEFAULT_ABI == ABI_V4)                                            \
 738     asm_fprintf (FILE,                                                  \
 739                  "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n",     \
 740                  reg_names[1], reg_names[1], reg_names[REGNO],          \
 741                  reg_names[1]);                                         \
 742 } while (0)
 743
 744 /* This is how to output an insn to pop a register from the stack.
 745    It need not be very fast code.  */
 746
 747 #define ASM_OUTPUT_REG_POP(FILE, REGNO)                                 \
 748 do {                                                                    \
 749   if (DEFAULT_ABI == ABI_V4)                                            \
 750     asm_fprintf (FILE,                                                  \
 751                  "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n",        \
 752                  reg_names[REGNO], reg_names[1], reg_names[1],          \
 753                  reg_names[1]);                                         \
 754 } while (0)
 755
 756 /* Switch  Recognition by gcc.c.  Add -G xx support.  */
 757
 758 /* Override svr4.h definition.  */
 759 #undef  SWITCH_TAKES_ARG
 760 #define SWITCH_TAKES_ARG(CHAR)                                          \
 761   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o'                      \
 762    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u'                   \
 763    || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x'                   \
 764    || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V'                   \
 765    || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
 766
 767 /* Output .file.  */
 768 /* Override elfos.h definition.  */
 769 #undef  ASM_FILE_START
 770 #define ASM_FILE_START(FILE)                                            \
 771 do {                                                                    \
 772   output_file_directive ((FILE), main_input_filename);                  \
 773   rs6000_file_start (FILE, TARGET_CPU_DEFAULT);                         \
 774 } while (0)
 775
 776
 777 extern int fixuplabelno;
 778
 779 /* Handle constructors specially for -mrelocatable.  */
 780 #define TARGET_ASM_CONSTRUCTOR  rs6000_elf_asm_out_constructor
 781 #define TARGET_ASM_DESTRUCTOR   rs6000_elf_asm_out_destructor
 782
 783 /* This is the end of what might become sysv4.h.  */
 784
 785 /* Use DWARF 2 debugging information by default.  */
 786 #undef  PREFERRED_DEBUGGING_TYPE
 787 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 788
 789 /* Historically we have also supported stabs debugging.  */
 790 #define DBX_DEBUGGING_INFO
 791
 792 #define TARGET_ENCODE_SECTION_INFO  rs6000_elf_encode_section_info
 793 #define TARGET_STRIP_NAME_ENCODING  rs6000_elf_strip_name_encoding
 794
 795 /* The ELF version doesn't encode [DS] or whatever at the end of symbols.  */
 796
 797 #define RS6000_OUTPUT_BASENAME(FILE, NAME)      \
 798     assemble_name (FILE, NAME)
 799
 800 /* This is how to output a reference to a user-level label named NAME.
 801    `assemble_name' uses this.  */
 802
 803 /* Override elfos.h definition.  */
 804 #undef  ASM_OUTPUT_LABELREF
 805 #define ASM_OUTPUT_LABELREF(FILE,NAME)          \
 806 do {                                            \
 807   const char *_name = NAME;                     \
 808   if (*_name == '@')                            \
 809     _name++;                                    \
 810                                                 \
 811   if (*_name == '*')                            \
 812     fprintf (FILE, "%s", _name + 1);            \
 813   else                                          \
 814     asm_fprintf (FILE, "%U%s", _name);          \
 815 } while (0)
 816
 817 /* But, to make this work, we have to output the stabs for the function
 818    name *first*...  */
 819
 820 #define DBX_FUNCTION_FIRST
 821
 822 /* This is the end of what might become sysv4dbx.h.  */
 823
 824 #ifndef TARGET_VERSION
 825 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
 826 #endif
 827 \f
 828 #ifndef TARGET_OS_CPP_BUILTINS
 829 #define TARGET_OS_CPP_BUILTINS()          \
 830   do                                      \
 831     {                                     \
 832       builtin_define_std ("PPC");         \
 833       builtin_define_std ("unix");        \
 834       builtin_define ("__svr4__");        \
 835       builtin_assert ("system=unix");     \
 836       builtin_assert ("system=svr4");     \
 837       builtin_assert ("cpu=powerpc");     \
 838       builtin_assert ("machine=powerpc"); \
 839     }                                     \
 840   while (0)
 841 #endif
 842
 843 /* Pass various options to the assembler.  */
 844 /* Override svr4.h definition.  */
 845 #undef  ASM_SPEC
 846 #define ASM_SPEC "%(asm_cpu) \
 847 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
 848 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
 849 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
 850 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
 851 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
 852 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 853     %{mcall-freebsd: -mbig} \
 854     %{mcall-i960-old: -mlittle} \
 855     %{mcall-linux: -mbig} \
 856     %{mcall-gnu: -mbig} \
 857     %{mcall-netbsd: -mbig} \
 858 }}}}"
 859
 860 #define CC1_ENDIAN_BIG_SPEC ""
 861
 862 #define CC1_ENDIAN_LITTLE_SPEC "\
 863 %{!mstrict-align: %{!mno-strict-align: \
 864     %{!mcall-i960-old: \
 865         -mstrict-align \
 866     } \
 867 }}"
 868
 869 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
 870
 871 /* Pass -G xxx to the compiler and set correct endian mode.  */
 872 #define CC1_SPEC "%{G*} \
 873 %{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
 874 %{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
 875 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 876     %{mcall-aixdesc: -mbig %(cc1_endian_big) } \
 877     %{mcall-freebsd: -mbig %(cc1_endian_big) } \
 878     %{mcall-i960-old: -mlittle %(cc1_endian_little) } \
 879     %{mcall-linux: -mbig %(cc1_endian_big) } \
 880     %{mcall-gnu: -mbig %(cc1_endian_big) } \
 881     %{mcall-netbsd: -mbig %(cc1_endian_big) } \
 882     %{!mcall-aixdesc: %{!mcall-freebsd: %{!mcall-i960-old: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: \
 883             %(cc1_endian_default) \
 884     }}}}}} \
 885 }}}} \
 886 %{mno-sdata: -msdata=none } \
 887 %{meabi: %{!mcall-*: -mcall-sysv }} \
 888 %{!meabi: %{!mno-eabi: \
 889     %{mrelocatable: -meabi } \
 890     %{mcall-freebsd: -mno-eabi } \
 891     %{mcall-i960-old: -meabi } \
 892     %{mcall-linux: -mno-eabi } \
 893     %{mcall-gnu: -mno-eabi } \
 894     %{mcall-netbsd: -mno-eabi }}} \
 895 %{msdata: -msdata=default} \
 896 %{mno-sdata: -msdata=none} \
 897 %{profile: -p}"
 898
 899 /* Don't put -Y P,<path> for cross compilers.  */
 900 #ifndef CROSS_COMPILE
 901 #define LINK_PATH_SPEC "\
 902 %{!R*:%{L*:-R %*}} \
 903 %{!nostdlib: %{!YP,*: \
 904     %{compat-bsd: \
 905         %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 906         %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
 907         %{!R*: %{!L*: -R /usr/ucblib}} \
 908     %{!compat-bsd: \
 909         %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 910         %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
 911
 912 #else
 913 #define LINK_PATH_SPEC ""
 914 #endif
 915
 916 /* Default starting address if specified.  */
 917 #define LINK_START_SPEC "\
 918 %{mads: %(link_start_ads) } \
 919 %{myellowknife: %(link_start_yellowknife) } \
 920 %{mmvme: %(link_start_mvme) } \
 921 %{msim: %(link_start_sim) } \
 922 %{mwindiss: %(link_start_windiss) } \
 923 %{mcall-freebsd: %(link_start_freebsd) } \
 924 %{mcall-linux: %(link_start_linux) } \
 925 %{mcall-gnu: %(link_start_gnu) } \
 926 %{mcall-netbsd: %(link_start_netbsd) } \
 927 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
 928          %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd:   \
 929          %{!mcall-freebsd: %(link_start_default) }}}}}}}}}"
 930
 931 #define LINK_START_DEFAULT_SPEC ""
 932
 933 /* Override svr4.h definition.  */
 934 #undef  LINK_SPEC
 935 #define LINK_SPEC "\
 936 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
 937 %{YP,*} %{R*} \
 938 %{Qy:} %{!Qn:-Qy} \
 939 %(link_shlib) \
 940 %{!Wl,-T*: %{!T*: %(link_start) }} \
 941 %(link_target) \
 942 %(link_os)"
 943
 944 /* For now, turn off shared libraries by default.  */
 945 #ifndef SHARED_LIB_SUPPORT
 946 #define NO_SHARED_LIB_SUPPORT
 947 #endif
 948
 949 #ifndef NO_SHARED_LIB_SUPPORT
 950 /* Shared libraries are default.  */
 951 #define LINK_SHLIB_SPEC "\
 952 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
 953 %{mshlib: } \
 954 %{static:-dn -Bstatic} \
 955 %{shared:-G -dy -z text} \
 956 %{symbolic:-Bsymbolic -G -dy -z text}"
 957
 958 #else
 959 /* Shared libraries are not default.  */
 960 #define LINK_SHLIB_SPEC "\
 961 %{mshlib: %(link_path) } \
 962 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
 963 %{static: } \
 964 %{shared:-G -dy -z text %(link_path) } \
 965 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
 966 #endif
 967
 968 /* Override the default target of the linker.  */
 969 #define LINK_TARGET_SPEC "\
 970 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
 971 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 972     %{mcall-i960-old: --oformat elf32-powerpcle} \
 973   }}}}"
 974
 975 /* Any specific OS flags.  */
 976 #define LINK_OS_SPEC "\
 977 %{mads: %(link_os_ads) } \
 978 %{myellowknife: %(link_os_yellowknife) } \
 979 %{mmvme: %(link_os_mvme) } \
 980 %{msim: %(link_os_sim) } \
 981 %{mwindiss: %(link_os_windiss) } \
 982 %{mcall-freebsd: %(link_os_freebsd) } \
 983 %{mcall-linux: %(link_os_linux) } \
 984 %{mcall-gnu: %(link_os_gnu) } \
 985 %{mcall-netbsd: %(link_os_netbsd) } \
 986 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
 987          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
 988          %{!mcall-netbsd: %(link_os_default) }}}}}}}}}"
 989
 990 #define LINK_OS_DEFAULT_SPEC ""
 991
 992 #define CPP_SYSV_SPEC \
 993 "%{mrelocatable*: -D_RELOCATABLE} \
 994 %{fpic: -D__PIC__=1 -D__pic__=1} \
 995 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}}"
 996
 997 /* Override rs6000.h definition.  */
 998 #undef  CPP_SPEC
 999 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) \
1000 %{mads: %(cpp_os_ads) } \
1001 %{myellowknife: %(cpp_os_yellowknife) } \
1002 %{mmvme: %(cpp_os_mvme) } \
1003 %{msim: %(cpp_os_sim) } \
1004 %{mwindiss: %(cpp_os_windiss) } \
1005 %{mcall-freebsd: %(cpp_os_freebsd) } \
1006 %{mcall-linux: %(cpp_os_linux) } \
1007 %{mcall-gnu: %(cpp_os_gnu) } \
1008 %{mcall-netbsd: %(cpp_os_netbsd) } \
1009 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1010          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1011          %{!mcall-netbsd: %(cpp_os_default) }}}}}}}}}"
1012
1013 #define CPP_OS_DEFAULT_SPEC ""
1014
1015 /* Override svr4.h definition.  */
1016 #undef  STARTFILE_SPEC
1017 #define STARTFILE_SPEC "\
1018 %{mads: %(startfile_ads) } \
1019 %{myellowknife: %(startfile_yellowknife) } \
1020 %{mmvme: %(startfile_mvme) } \
1021 %{msim: %(startfile_sim) } \
1022 %{mwindiss: %(startfile_windiss) } \
1023 %{mcall-freebsd: %(startfile_freebsd) } \
1024 %{mcall-linux: %(startfile_linux) } \
1025 %{mcall-gnu: %(startfile_gnu) } \
1026 %{mcall-netbsd: %(startfile_netbsd) } \
1027 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1028          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1029          %{!mcall-netbsd: %(startfile_default) }}}}}}}}}"
1030
1031 #define STARTFILE_DEFAULT_SPEC ""
1032
1033 /* Override svr4.h definition.  */
1034 #undef  LIB_SPEC
1035 #define LIB_SPEC "\
1036 %{mads: %(lib_ads) } \
1037 %{myellowknife: %(lib_yellowknife) } \
1038 %{mmvme: %(lib_mvme) } \
1039 %{msim: %(lib_sim) } \
1040 %{mwindiss: %(lib_windiss) } \
1041 %{mcall-freebsd: %(lib_freebsd) } \
1042 %{mcall-linux: %(lib_linux) } \
1043 %{mcall-gnu: %(lib_gnu) } \
1044 %{mcall-netbsd: %(lib_netbsd) } \
1045 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1046          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1047          %{!mcall-netbsd: %(lib_default) }}}}}}}}}"
1048
1049 #define LIB_DEFAULT_SPEC ""
1050
1051 /* Override svr4.h definition.  */
1052 #undef  ENDFILE_SPEC
1053 #define ENDFILE_SPEC "\
1054 %{mads: crtsavres.o%s %(endfile_ads)} \
1055 %{myellowknife: crtsavres.o%s %(endfile_yellowknife)} \
1056 %{mmvme: crtsavres.o%s %(endfile_mvme)} \
1057 %{msim: crtsavres.o%s %(endfile_sim)} \
1058 %{mwindiss: %(endfile_windiss)} \
1059 %{mcall-freebsd: crtsavres.o%s %(endfile_freebsd) } \
1060 %{mcall-linux: crtsavres.o%s %(endfile_linux) } \
1061 %{mcall-gnu: crtsavres.o%s %(endfile_gnu) } \
1062 %{mcall-netbsd: crtsavres.o%s %(endfile_netbsd) } \
1063 %{mvxworks: crtsavres.o%s %(endfile_vxworks) } \
1064 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1065          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1066          %{!mcall-netbsd: %{!mvxworks: %(crtsavres_default) \
1067                                        %(endfile_default) }}}}}}}}}}"
1068
1069 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
1070
1071 #define ENDFILE_DEFAULT_SPEC ""
1072
1073 /* Motorola ADS support.  */
1074 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1075
1076 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1077
1078 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1079
1080 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1081
1082 #define LINK_OS_ADS_SPEC ""
1083
1084 #define CPP_OS_ADS_SPEC ""
1085
1086 /* Motorola Yellowknife support.  */
1087 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1088
1089 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1090
1091 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1092
1093 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1094
1095 #define LINK_OS_YELLOWKNIFE_SPEC ""
1096
1097 #define CPP_OS_YELLOWKNIFE_SPEC ""
1098
1099 /* Motorola MVME support.  */
1100 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1101
1102 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1103
1104 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1105
1106 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1107
1108 #define LINK_OS_MVME_SPEC ""
1109
1110 #define CPP_OS_MVME_SPEC ""
1111
1112 /* PowerPC simulator based on netbsd system calls support.  */
1113 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1114
1115 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1116
1117 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1118
1119 #define LINK_START_SIM_SPEC ""
1120
1121 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1122
1123 #define CPP_OS_SIM_SPEC ""
1124
1125 /* FreeBSD support.  */
1126
1127 #define CPP_OS_FREEBSD_SPEC     "\
1128   -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1129   -Acpu=powerpc -Amachine=powerpc"
1130
1131 #define STARTFILE_FREEBSD_SPEC  FBSD_STARTFILE_SPEC
1132 #define ENDFILE_FREEBSD_SPEC    FBSD_ENDFILE_SPEC
1133 #define LIB_FREEBSD_SPEC        FBSD_LIB_SPEC
1134 #define LINK_START_FREEBSD_SPEC ""
1135
1136 #define LINK_OS_FREEBSD_SPEC "\
1137   %{symbolic:-Bsymbolic}"
1138
1139 /* GNU/Linux support.  */
1140 #ifdef USE_GNULIBC_1
1141 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1142 %{!mnewlib: -lc }"
1143 #else
1144 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1145 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1146 %{profile:-lc_p} %{!profile:-lc}}}"
1147 #endif
1148
1149 #ifdef USE_GNULIBC_1
1150 #define STARTFILE_LINUX_SPEC "\
1151 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1152 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1153 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1154 #else
1155 #define STARTFILE_LINUX_SPEC "\
1156 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1157 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1158 %{static:crtbeginT.o%s} \
1159 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
1160 #endif
1161
1162 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1163 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1164
1165 #define LINK_START_LINUX_SPEC ""
1166
1167 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1168   %{rdynamic:-export-dynamic} \
1169   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1170
1171 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
1172 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1173 #endif
1174
1175 #ifdef USE_GNULIBC_1
1176 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1177 %{!undef:                                                         \
1178   %{!ansi:                                                        \
1179     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1180     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1181 -Asystem=unix -Asystem=posix"
1182 #else
1183 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1184 %{!undef:                                                         \
1185   %{!ansi:                                                        \
1186     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1187     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1188 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1189 #endif
1190
1191 /* GNU/Hurd support.  */
1192 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1193 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1194 %{profile:-lc_p} %{!profile:-lc}}}"
1195
1196 #define STARTFILE_GNU_SPEC "\
1197 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1198 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1199 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1200 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1201
1202 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1203 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1204
1205 #define LINK_START_GNU_SPEC ""
1206
1207 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1208   %{rdynamic:-export-dynamic} \
1209   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1210
1211 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__    \
1212 %{!undef:                                                       \
1213   %{!ansi: -Dunix -D__unix}}                                    \
1214 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1215
1216 /* NetBSD support.  */
1217 #define LIB_NETBSD_SPEC "\
1218 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1219
1220 #define STARTFILE_NETBSD_SPEC "\
1221 ncrti.o%s crt0.o%s \
1222 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1223
1224 #define ENDFILE_NETBSD_SPEC "\
1225 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1226 ncrtn.o%s"
1227
1228 #define LINK_START_NETBSD_SPEC "\
1229 "
1230
1231 #define LINK_OS_NETBSD_SPEC "\
1232 %{!shared: %{!static: \
1233   %{rdynamic:-export-dynamic} \
1234   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1235
1236 #define CPP_OS_NETBSD_SPEC "\
1237 -D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
1238
1239 /* VxWorks support.  */
1240 /* VxWorks does all the library stuff itself.  */
1241 #define LIB_VXWORKS_SPEC ""
1242
1243 /* VxWorks provides the functionality of crt0.o and friends itself.  */
1244
1245 #define STARTFILE_VXWORKS_SPEC ""
1246
1247 #define ENDFILE_VXWORKS_SPEC ""
1248
1249 /* Because it uses ld -r, vxworks has no start/end files, nor starting
1250    address.  */
1251
1252 #define LINK_START_VXWORKS_SPEC ""
1253
1254 #define LINK_OS_VXWORKS_SPEC "-r"
1255
1256 #define CPP_OS_VXWORKS_SPEC "\
1257 -DCPU_FAMILY=PPC \
1258 %{!mcpu*: \
1259   %{mpowerpc*: -DCPU=PPC603} \
1260   %{!mno-powerpc: -DCPU=PPC603}} \
1261 %{mcpu=powerpc: -DCPU=PPC603} \
1262 %{mcpu=401: -DCPU=PPC403} \
1263 %{mcpu=403: -DCPU=PPC403} \
1264 %{mcpu=405: -DCPU=PPC405} \
1265 %{mcpu=601: -DCPU=PPC601} \
1266 %{mcpu=602: -DCPU=PPC603} \
1267 %{mcpu=603: -DCPU=PPC603} \
1268 %{mcpu=603e: -DCPU=PPC603} \
1269 %{mcpu=ec603e: -DCPU=PPC603} \
1270 %{mcpu=604: -DCPU=PPC604} \
1271 %{mcpu=604e: -DCPU=PPC604} \
1272 %{mcpu=620: -DCPU=PPC604} \
1273 %{mcpu=740: -DCPU=PPC603} \
1274 %{mcpu=7450: -DCPU=PPC603} \
1275 %{mcpu=750: -DCPU=PPC603} \
1276 %{mcpu=801: -DCPU=PPC603} \
1277 %{mcpu=821: -DCPU=PPC603} \
1278 %{mcpu=823: -DCPU=PPC603} \
1279 %{mcpu=860: -DCPU=PPC603}"
1280
1281 /* WindISS support.  */
1282
1283 #define LIB_WINDISS_SPEC "--start-group -li -lcfp -lwindiss -lram -limpl -limpfp --end-group"
1284
1285 #define CPP_OS_WINDISS_SPEC "\
1286 -D__rtasim \
1287 -D__EABI__ \
1288 -D__ppc \
1289 %{!msoft-float: -D__hardfp} \
1290 "
1291
1292 #define STARTFILE_WINDISS_SPEC "crt0.o%s crtbegin.o%s"
1293
1294 #define ENDFILE_WINDISS_SPEC "crtend.o%s"
1295
1296 #define LINK_START_WINDISS_SPEC ""
1297
1298 #define LINK_OS_WINDISS_SPEC ""
1299
1300 /* Define any extra SPECS that the compiler needs to generate.  */
1301 /* Override rs6000.h definition.  */
1302 #undef  SUBTARGET_EXTRA_SPECS
1303 #define SUBTARGET_EXTRA_SPECS                                           \
1304   { "cpp_sysv",                 CPP_SYSV_SPEC },                        \
1305   { "crtsavres_default",        CRTSAVRES_DEFAULT_SPEC },              \
1306   { "lib_ads",                  LIB_ADS_SPEC },                         \
1307   { "lib_yellowknife",          LIB_YELLOWKNIFE_SPEC },                 \
1308   { "lib_mvme",                 LIB_MVME_SPEC },                        \
1309   { "lib_sim",                  LIB_SIM_SPEC },                         \
1310   { "lib_freebsd",              LIB_FREEBSD_SPEC },                     \
1311   { "lib_gnu",                  LIB_GNU_SPEC },                         \
1312   { "lib_linux",                LIB_LINUX_SPEC },                       \
1313   { "lib_netbsd",               LIB_NETBSD_SPEC },                      \
1314   { "lib_vxworks",              LIB_VXWORKS_SPEC },                     \
1315   { "lib_windiss",              LIB_WINDISS_SPEC },                     \
1316   { "lib_default",              LIB_DEFAULT_SPEC },                     \
1317   { "startfile_ads",            STARTFILE_ADS_SPEC },                   \
1318   { "startfile_yellowknife",    STARTFILE_YELLOWKNIFE_SPEC },           \
1319   { "startfile_mvme",           STARTFILE_MVME_SPEC },                  \
1320   { "startfile_sim",            STARTFILE_SIM_SPEC },                   \
1321   { "startfile_freebsd",        STARTFILE_FREEBSD_SPEC },               \
1322   { "startfile_gnu",            STARTFILE_GNU_SPEC },                   \
1323   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
1324   { "startfile_netbsd",         STARTFILE_NETBSD_SPEC },                \
1325   { "startfile_vxworks",        STARTFILE_VXWORKS_SPEC },               \
1326   { "startfile_windiss",        STARTFILE_WINDISS_SPEC },               \
1327   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
1328   { "endfile_ads",              ENDFILE_ADS_SPEC },                     \
1329   { "endfile_yellowknife",      ENDFILE_YELLOWKNIFE_SPEC },             \
1330   { "endfile_mvme",             ENDFILE_MVME_SPEC },                    \
1331   { "endfile_sim",              ENDFILE_SIM_SPEC },                     \
1332   { "endfile_freebsd",          ENDFILE_FREEBSD_SPEC },                 \
1333   { "endfile_gnu",              ENDFILE_GNU_SPEC },                     \
1334   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
1335   { "endfile_netbsd",           ENDFILE_NETBSD_SPEC },                  \
1336   { "endfile_vxworks",          ENDFILE_VXWORKS_SPEC },                 \
1337   { "endfile_windiss",          ENDFILE_WINDISS_SPEC },                 \
1338   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
1339   { "link_path",                LINK_PATH_SPEC },                       \
1340   { "link_shlib",               LINK_SHLIB_SPEC },                      \
1341   { "link_target",              LINK_TARGET_SPEC },                     \
1342   { "link_start",               LINK_START_SPEC },                      \
1343   { "link_start_ads",           LINK_START_ADS_SPEC },                  \
1344   { "link_start_yellowknife",   LINK_START_YELLOWKNIFE_SPEC },          \
1345   { "link_start_mvme",          LINK_START_MVME_SPEC },                 \
1346   { "link_start_sim",           LINK_START_SIM_SPEC },                  \
1347   { "link_start_freebsd",       LINK_START_FREEBSD_SPEC },              \
1348   { "link_start_gnu",           LINK_START_GNU_SPEC },                  \
1349   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
1350   { "link_start_netbsd",        LINK_START_NETBSD_SPEC },               \
1351   { "link_start_vxworks",       LINK_START_VXWORKS_SPEC },              \
1352   { "link_start_windiss",       LINK_START_WINDISS_SPEC },              \
1353   { "link_start_default",       LINK_START_DEFAULT_SPEC },              \
1354   { "link_os",                  LINK_OS_SPEC },                         \
1355   { "link_os_ads",              LINK_OS_ADS_SPEC },                     \
1356   { "link_os_yellowknife",      LINK_OS_YELLOWKNIFE_SPEC },             \
1357   { "link_os_mvme",             LINK_OS_MVME_SPEC },                    \
1358   { "link_os_sim",              LINK_OS_SIM_SPEC },                     \
1359   { "link_os_freebsd",          LINK_OS_FREEBSD_SPEC },                 \
1360   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
1361   { "link_os_gnu",              LINK_OS_GNU_SPEC },                     \
1362   { "link_os_netbsd",           LINK_OS_NETBSD_SPEC },                  \
1363   { "link_os_vxworks",          LINK_OS_VXWORKS_SPEC },                 \
1364   { "link_os_windiss",          LINK_OS_WINDISS_SPEC },                 \
1365   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
1366   { "cc1_endian_big",           CC1_ENDIAN_BIG_SPEC },                  \
1367   { "cc1_endian_little",        CC1_ENDIAN_LITTLE_SPEC },               \
1368   { "cc1_endian_default",       CC1_ENDIAN_DEFAULT_SPEC },              \
1369   { "cpp_os_ads",               CPP_OS_ADS_SPEC },                      \
1370   { "cpp_os_yellowknife",       CPP_OS_YELLOWKNIFE_SPEC },              \
1371   { "cpp_os_mvme",              CPP_OS_MVME_SPEC },                     \
1372   { "cpp_os_sim",               CPP_OS_SIM_SPEC },                      \
1373   { "cpp_os_freebsd",           CPP_OS_FREEBSD_SPEC },                  \
1374   { "cpp_os_gnu",               CPP_OS_GNU_SPEC },                      \
1375   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
1376   { "cpp_os_netbsd",            CPP_OS_NETBSD_SPEC },                   \
1377   { "cpp_os_vxworks",           CPP_OS_VXWORKS_SPEC },                  \
1378   { "cpp_os_windiss",           CPP_OS_WINDISS_SPEC },                  \
1379   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
1380
1381 /* Define this macro as a C expression for the initializer of an
1382    array of string to tell the driver program which options are
1383    defaults for this target and thus do not need to be handled
1384    specially when using `MULTILIB_OPTIONS'.
1385
1386    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1387    the target makefile fragment or if none of the options listed in
1388    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
1389
1390 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1391
1392 /* Define this macro if the code for function profiling should come
1393    before the function prologue.  Normally, the profiling code comes
1394    after.  */
1395 #define PROFILE_BEFORE_PROLOGUE 1
1396
1397 /* Function name to call to do profiling.  */
1398 #define RS6000_MCOUNT "_mcount"
1399
1400 /* Define this macro (to a value of 1) if you want to support the
1401    Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1402    pack(pop)'.  The pack(push,<n>) pragma specifies the maximum
1403    alignment (in bytes) of fields within a structure, in much the
1404    same way as the __aligned__' and __packed__' __attribute__'s
1405    do.  A pack value of zero resets the behaviour to the default.
1406    Successive invocations of this pragma cause the previous values to
1407    be stacked, so that invocations of #pragma pack(pop)' will return
1408    to the previous value.  */
1409
1410 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1411
1412 /* Define library calls for quad FP operations.  These are all part of the
1413    PowerPC 32bit ABI.  */
1414 #define ADDTF3_LIBCALL "_q_add"
1415 #define DIVTF3_LIBCALL "_q_div"
1416 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1417 #define EQTF2_LIBCALL "_q_feq"
1418 #define GETF2_LIBCALL "_q_fge"
1419 #define GTTF2_LIBCALL "_q_fgt"
1420 #define LETF2_LIBCALL "_q_fle"
1421 #define LTTF2_LIBCALL "_q_flt"
1422 #define NETF2_LIBCALL "_q_fne"
1423 #define FLOATSITF2_LIBCALL "_q_itoq"
1424 #define MULTF3_LIBCALL "_q_mul"
1425 #define NEGTF2_LIBCALL "_q_neg"
1426 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1427 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1428 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1429 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1430 #define SQRTTF_LIBCALL "_q_sqrt"
1431 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1432 #define SUBTF3_LIBCALL "_q_sub"
1433 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1434
1435 #define INIT_TARGET_OPTABS                                              \
1436   do {                                                                  \
1437     if (TARGET_HARD_FLOAT)                                              \
1438       {                                                                 \
1439         add_optab->handlers[(int) TFmode].libfunc                       \
1440           = init_one_libfunc (ADDTF3_LIBCALL);                          \
1441         sub_optab->handlers[(int) TFmode].libfunc                       \
1442           = init_one_libfunc (SUBTF3_LIBCALL);                          \
1443         neg_optab->handlers[(int) TFmode].libfunc                       \
1444           = init_one_libfunc (NEGTF2_LIBCALL);                          \
1445         smul_optab->handlers[(int) TFmode].libfunc                      \
1446           = init_one_libfunc (MULTF3_LIBCALL);                          \
1447         sdiv_optab->handlers[(int) TFmode].libfunc                      \
1448           = init_one_libfunc (DIVTF3_LIBCALL);                          \
1449         eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL);               \
1450         netf2_libfunc = init_one_libfunc (NETF2_LIBCALL);               \
1451         gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL);               \
1452         getf2_libfunc = init_one_libfunc (GETF2_LIBCALL);               \
1453         lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL);               \
1454         letf2_libfunc = init_one_libfunc (LETF2_LIBCALL);               \
1455         trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL);     \
1456         trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL);     \
1457         extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL);   \
1458         extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL);   \
1459         floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL);      \
1460         fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL);    \
1461         fixunstfsi_libfunc                                              \
1462           = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL);               \
1463         if (TARGET_PPC_GPOPT || TARGET_POWER2)                          \
1464           sqrt_optab->handlers[(int) TFmode].libfunc                    \
1465             = init_one_libfunc (SQRTTF_LIBCALL);                        \
1466       }                                                                 \
1467   } while (0)
1468
1469 /* Select a format to encode pointers in exception handling data.  CODE
1470    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
1471    true if the symbol may be affected by dynamic relocations.  */
1472 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                            \
1473   ((flag_pic || TARGET_RELOCATABLE)                                          \
1474    ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1475    : DW_EH_PE_absptr)
1476
1477 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1478
1479 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1480
1481 /* Generate entries in .fixup for relocatable addresses.  */
1482 #define RELOCATABLE_NEEDS_FIXUP