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     fprintf (FILE, "%s", TYPE_ASM_OP);                                  \
 614     assemble_name (FILE, NAME);                                         \
 615     putc (',', FILE);                                                   \
 616     fprintf (FILE, TYPE_OPERAND_FMT, "function");                       \
 617     putc ('\n', FILE);                                                  \
 618     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
 619                                                                         \
 620     if (DEFAULT_ABI == ABI_AIX)                                         \
 621       {                                                                 \
 622         const char *desc_name, *orig_name;                              \
 623                                                                         \
 624         orig_name = (*targetm.strip_name_encoding) (NAME);              \
 625         desc_name = orig_name;                                          \
 626         while (*desc_name == '.')                                       \
 627           desc_name++;                                                  \
 628                                                                         \
 629         if (TREE_PUBLIC (DECL))                                         \
 630           fprintf (FILE, "\t.globl %s\n", desc_name);                   \
 631                                                                         \
 632         fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);             \
 633         fprintf (FILE, "%s:\n", desc_name);                             \
 634         fprintf (FILE, "\t%s %s\n", init_ptr, orig_name);               \
 635         fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr);       \
 636         if (DEFAULT_ABI == ABI_AIX)                                     \
 637           fprintf (FILE, "\t%s 0\n", init_ptr);                         \
 638         fprintf (FILE, "\t.previous\n");                                \
 639       }                                                                 \
 640     ASM_OUTPUT_LABEL (FILE, NAME);                                      \
 641   } while (0)
 642
 643 /* A C compound statement that outputs the assembler code for a thunk function,
 644     used to implement C++ virtual function calls with multiple inheritance.  The
 645     thunk acts as a wrapper around a virtual function, adjusting the implicit
 646     object parameter before handing control off to the real function.
 647
 648     First, emit code to add the integer DELTA to the location that contains the
 649     incoming first argument.  Assume that this argument contains a pointer, and
 650     is the one used to pass the this' pointer in C++.  This is the incoming
 651     argument *before* the function prologue, e.g. %o0' on a sparc.  The
 652     addition must preserve the values of all other incoming arguments.
 653
 654     After the addition, emit code to jump to FUNCTION, which is a
 655     FUNCTION_DECL'.  This is a direct pure jump, not a call, and does not touch
 656     the return address.  Hence returning from FUNCTION will return to whoever
 657     called the current thunk'.
 658
 659     The effect must be as if FUNCTION had been called directly with the adjusted
 660     first argument.  This macro is responsible for emitting all of the code for
 661     a thunk function; FUNCTION_PROLOGUE' and FUNCTION_EPILOGUE' are not
 662     invoked.
 663
 664     The THUNK_FNDECL is redundant.  (DELTA and FUNCTION have already been
 665     extracted from it.)  It might possibly be useful on some targets, but
 666     probably not.
 667
 668     If you do not define this macro, the target-independent code in the C++
 669     frontend will generate a less efficient heavyweight thunk that calls
 670     FUNCTION instead of jumping to it.  The generic approach does not support
 671     varargs.  */
 672
 673 #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
 674   output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
 675
 676 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
 677    flag.  The LOCAL_LABEL_PREFIX variable is used by dbxelf.h.  */
 678
 679 #define LOCAL_LABEL_PREFIX "."
 680 #define USER_LABEL_PREFIX ""
 681
 682 /* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL.  */
 683
 684 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)   \
 685   asm_fprintf (FILE, "%L%s", PREFIX)
 686
 687 #define ASM_OUTPUT_LABEL(FILE,NAME)     \
 688   (assemble_name (FILE, NAME), fputs (":\n", FILE))
 689
 690 /* This is how to output a command to make the user-level label named NAME
 691    defined for reference from other files.  */
 692
 693 #define ASM_GLOBALIZE_LABEL(FILE,NAME)  \
 694   do { fputs ("\t.globl ", FILE);       \
 695        assemble_name (FILE, NAME); putc ('\n', FILE);} while (0)
 696
 697 /* This says how to output assembler code to declare an
 698    uninitialized internal linkage data object.  Under SVR4,
 699    the linker seems to want the alignment of data objects
 700    to depend on their types.  We do exactly that here.  */
 701
 702 #define LOCAL_ASM_OP    "\t.local\t"
 703
 704 #define LCOMM_ASM_OP    "\t.lcomm\t"
 705
 706 /* Override elfos.h definition.  */
 707 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 708 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 709 do {                                                                    \
 710   if (rs6000_sdata != SDATA_NONE && (SIZE) > 0                          \
 711       && (SIZE) <= g_switch_value)                                      \
 712     {                                                                   \
 713       sbss_section ();                                                  \
 714       ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));      \
 715       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 716       ASM_OUTPUT_SKIP (FILE, SIZE);                                     \
 717       if (!flag_inhibit_size_directive && (SIZE) > 0)                   \
 718         {                                                               \
 719           fprintf (FILE, "%s", SIZE_ASM_OP);                            \
 720           assemble_name (FILE, NAME);                                   \
 721           fprintf (FILE, ",%d\n",  SIZE);                               \
 722         }                                                               \
 723     }                                                                   \
 724   else                                                                  \
 725     {                                                                   \
 726       fprintf (FILE, "%s", LCOMM_ASM_OP);                               \
 727       assemble_name ((FILE), (NAME));                                   \
 728       fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT);    \
 729     }                                                                   \
 730 } while (0)
 731
 732 /* Describe how to emit uninitialized external linkage items.  */
 733 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 734 do {                                                                    \
 735   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
 736   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 737 } while (0)
 738
 739 /* Switch  Recognition by gcc.c.  Add -G xx support.  */
 740
 741 /* Override svr4.h definition.  */
 742 #undef  SWITCH_TAKES_ARG
 743 #define SWITCH_TAKES_ARG(CHAR)                                          \
 744   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o'                      \
 745    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u'                   \
 746    || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x'                   \
 747    || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V'                   \
 748    || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
 749
 750 /* Output .file.  */
 751 /* Override elfos.h definition.  */
 752 #undef  ASM_FILE_START
 753 #define ASM_FILE_START(FILE)                                            \
 754 do {                                                                    \
 755   output_file_directive ((FILE), main_input_filename);                  \
 756   rs6000_file_start (FILE, TARGET_CPU_DEFAULT);                         \
 757 } while (0)
 758
 759
 760 extern int fixuplabelno;
 761
 762 /* Handle constructors specially for -mrelocatable.  */
 763 #define TARGET_ASM_CONSTRUCTOR  rs6000_elf_asm_out_constructor
 764 #define TARGET_ASM_DESTRUCTOR   rs6000_elf_asm_out_destructor
 765
 766 /* This is the end of what might become sysv4.h.  */
 767
 768 /* Use DWARF 2 debugging information by default.  */
 769 #undef  PREFERRED_DEBUGGING_TYPE
 770 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 771
 772 /* Historically we have also supported stabs debugging.  */
 773 #define DBX_DEBUGGING_INFO
 774
 775 #define TARGET_ENCODE_SECTION_INFO  rs6000_elf_encode_section_info
 776 #define TARGET_STRIP_NAME_ENCODING  rs6000_elf_strip_name_encoding
 777
 778 /* The ELF version doesn't encode [DS] or whatever at the end of symbols.  */
 779
 780 #define RS6000_OUTPUT_BASENAME(FILE, NAME)      \
 781     assemble_name (FILE, NAME)
 782
 783 /* This is how to output a reference to a user-level label named NAME.
 784    `assemble_name' uses this.  */
 785
 786 /* Override elfos.h definition.  */
 787 #undef  ASM_OUTPUT_LABELREF
 788 #define ASM_OUTPUT_LABELREF(FILE,NAME)          \
 789 do {                                            \
 790   const char *_name = NAME;                     \
 791   if (*_name == '@')                            \
 792     _name++;                                    \
 793                                                 \
 794   if (*_name == '*')                            \
 795     fprintf (FILE, "%s", _name + 1);            \
 796   else                                          \
 797     asm_fprintf (FILE, "%U%s", _name);          \
 798 } while (0)
 799
 800 /* But, to make this work, we have to output the stabs for the function
 801    name *first*...  */
 802
 803 #define DBX_FUNCTION_FIRST
 804
 805 /* This is the end of what might become sysv4dbx.h.  */
 806
 807 #ifndef TARGET_VERSION
 808 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
 809 #endif
 810 \f
 811 #ifndef CPP_PREDEFINES
 812 #define CPP_PREDEFINES \
 813   "-DPPC -Dunix -D__svr4__ -Asystem=unix -Asystem=svr4 -Acpu=powerpc -Amachine=powerpc"
 814 #endif
 815
 816 /* Pass various options to the assembler.  */
 817 /* Override svr4.h definition.  */
 818 #undef  ASM_SPEC
 819 #define ASM_SPEC "%(asm_cpu) \
 820 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
 821 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
 822 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
 823 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
 824 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
 825 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 826     %{mcall-freebsd: -mbig} \
 827     %{mcall-i960-old: -mlittle} \
 828     %{mcall-linux: -mbig} \
 829     %{mcall-gnu: -mbig} \
 830     %{mcall-netbsd: -mbig} \
 831 }}}}"
 832
 833 #define CC1_ENDIAN_BIG_SPEC ""
 834
 835 #define CC1_ENDIAN_LITTLE_SPEC "\
 836 %{!mstrict-align: %{!mno-strict-align: \
 837     %{!mcall-i960-old: \
 838         -mstrict-align \
 839     } \
 840 }}"
 841
 842 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
 843
 844 /* Pass -G xxx to the compiler and set correct endian mode.  */
 845 #define CC1_SPEC "%{G*} \
 846 %{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
 847 %{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
 848 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 849     %{mcall-aixdesc: -mbig %(cc1_endian_big) } \
 850     %{mcall-freebsd: -mbig %(cc1_endian_big) } \
 851     %{mcall-i960-old: -mlittle %(cc1_endian_little) } \
 852     %{mcall-linux: -mbig %(cc1_endian_big) } \
 853     %{mcall-gnu: -mbig %(cc1_endian_big) } \
 854     %{mcall-netbsd: -mbig %(cc1_endian_big) } \
 855     %{!mcall-aixdesc: %{!mcall-freebsd: %{!mcall-i960-old: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: \
 856             %(cc1_endian_default) \
 857     }}}}}} \
 858 }}}} \
 859 %{mno-sdata: -msdata=none } \
 860 %{meabi: %{!mcall-*: -mcall-sysv }} \
 861 %{!meabi: %{!mno-eabi: \
 862     %{mrelocatable: -meabi } \
 863     %{mcall-freebsd: -mno-eabi } \
 864     %{mcall-i960-old: -meabi } \
 865     %{mcall-linux: -mno-eabi } \
 866     %{mcall-gnu: -mno-eabi } \
 867     %{mcall-netbsd: -mno-eabi }}} \
 868 %{msdata: -msdata=default} \
 869 %{mno-sdata: -msdata=none} \
 870 %{profile: -p}"
 871
 872 /* Don't put -Y P,<path> for cross compilers.  */
 873 #ifndef CROSS_COMPILE
 874 #define LINK_PATH_SPEC "\
 875 %{!R*:%{L*:-R %*}} \
 876 %{!nostdlib: %{!YP,*: \
 877     %{compat-bsd: \
 878         %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 879         %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
 880         %{!R*: %{!L*: -R /usr/ucblib}} \
 881     %{!compat-bsd: \
 882         %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 883         %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
 884
 885 #else
 886 #define LINK_PATH_SPEC ""
 887 #endif
 888
 889 /* Default starting address if specified.  */
 890 #define LINK_START_SPEC "\
 891 %{mads: %(link_start_ads) } \
 892 %{myellowknife: %(link_start_yellowknife) } \
 893 %{mmvme: %(link_start_mvme) } \
 894 %{msim: %(link_start_sim) } \
 895 %{mwindiss: %(link_start_windiss) } \
 896 %{mcall-freebsd: %(link_start_freebsd) } \
 897 %{mcall-linux: %(link_start_linux) } \
 898 %{mcall-gnu: %(link_start_gnu) } \
 899 %{mcall-netbsd: %(link_start_netbsd) } \
 900 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
 901          %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd:   \
 902          %{!mcall-freebsd: %(link_start_default) }}}}}}}}}"
 903
 904 #define LINK_START_DEFAULT_SPEC ""
 905
 906 /* Override svr4.h definition.  */
 907 #undef  LINK_SPEC
 908 #define LINK_SPEC "\
 909 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
 910 %{YP,*} %{R*} \
 911 %{Qy:} %{!Qn:-Qy} \
 912 %(link_shlib) \
 913 %{!Wl,-T*: %{!T*: %(link_start) }} \
 914 %(link_target) \
 915 %(link_os)"
 916
 917 /* For now, turn off shared libraries by default.  */
 918 #ifndef SHARED_LIB_SUPPORT
 919 #define NO_SHARED_LIB_SUPPORT
 920 #endif
 921
 922 #ifndef NO_SHARED_LIB_SUPPORT
 923 /* Shared libraries are default.  */
 924 #define LINK_SHLIB_SPEC "\
 925 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
 926 %{mshlib: } \
 927 %{static:-dn -Bstatic} \
 928 %{shared:-G -dy -z text} \
 929 %{symbolic:-Bsymbolic -G -dy -z text}"
 930
 931 #else
 932 /* Shared libraries are not default.  */
 933 #define LINK_SHLIB_SPEC "\
 934 %{mshlib: %(link_path) } \
 935 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
 936 %{static: } \
 937 %{shared:-G -dy -z text %(link_path) } \
 938 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
 939 #endif
 940
 941 /* Override the default target of the linker.  */
 942 #define LINK_TARGET_SPEC "\
 943 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
 944 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 945     %{mcall-i960-old: --oformat elf32-powerpcle} \
 946   }}}}"
 947
 948 /* Any specific OS flags.  */
 949 #define LINK_OS_SPEC "\
 950 %{mads: %(link_os_ads) } \
 951 %{myellowknife: %(link_os_yellowknife) } \
 952 %{mmvme: %(link_os_mvme) } \
 953 %{msim: %(link_os_sim) } \
 954 %{mwindiss: %(link_os_windiss) } \
 955 %{mcall-freebsd: %(link_os_freebsd) } \
 956 %{mcall-linux: %(link_os_linux) } \
 957 %{mcall-gnu: %(link_os_gnu) } \
 958 %{mcall-netbsd: %(link_os_netbsd) } \
 959 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
 960          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
 961          %{!mcall-netbsd: %(link_os_default) }}}}}}}}}"
 962
 963 #define LINK_OS_DEFAULT_SPEC ""
 964
 965 #define CPP_SYSV_SPEC \
 966 "%{mrelocatable*: -D_RELOCATABLE} \
 967 %{fpic: -D__PIC__=1 -D__pic__=1} \
 968 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}}"
 969
 970 /* Override rs6000.h definition.  */
 971 #undef  CPP_SPEC
 972 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) \
 973 %{mads: %(cpp_os_ads) } \
 974 %{myellowknife: %(cpp_os_yellowknife) } \
 975 %{mmvme: %(cpp_os_mvme) } \
 976 %{msim: %(cpp_os_sim) } \
 977 %{mwindiss: %(cpp_os_windiss) } \
 978 %{mcall-freebsd: %(cpp_os_freebsd) } \
 979 %{mcall-linux: %(cpp_os_linux) } \
 980 %{mcall-gnu: %(cpp_os_gnu) } \
 981 %{mcall-netbsd: %(cpp_os_netbsd) } \
 982 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
 983          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
 984          %{!mcall-netbsd: %(cpp_os_default) }}}}}}}}}"
 985
 986 #define CPP_OS_DEFAULT_SPEC ""
 987
 988 /* Override svr4.h definition.  */
 989 #undef  STARTFILE_SPEC
 990 #define STARTFILE_SPEC "\
 991 %{mads: %(startfile_ads) } \
 992 %{myellowknife: %(startfile_yellowknife) } \
 993 %{mmvme: %(startfile_mvme) } \
 994 %{msim: %(startfile_sim) } \
 995 %{mwindiss: %(startfile_windiss) } \
 996 %{mcall-freebsd: %(startfile_freebsd) } \
 997 %{mcall-linux: %(startfile_linux) } \
 998 %{mcall-gnu: %(startfile_gnu) } \
 999 %{mcall-netbsd: %(startfile_netbsd) } \
1000 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1001          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1002          %{!mcall-netbsd: %(startfile_default) }}}}}}}}}"
1003
1004 #define STARTFILE_DEFAULT_SPEC ""
1005
1006 /* Override svr4.h definition.  */
1007 #undef  LIB_SPEC
1008 #define LIB_SPEC "\
1009 %{mads: %(lib_ads) } \
1010 %{myellowknife: %(lib_yellowknife) } \
1011 %{mmvme: %(lib_mvme) } \
1012 %{msim: %(lib_sim) } \
1013 %{mwindiss: %(lib_windiss) } \
1014 %{mcall-freebsd: %(lib_freebsd) } \
1015 %{mcall-linux: %(lib_linux) } \
1016 %{mcall-gnu: %(lib_gnu) } \
1017 %{mcall-netbsd: %(lib_netbsd) } \
1018 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1019          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1020          %{!mcall-netbsd: %(lib_default) }}}}}}}}}"
1021
1022 #define LIB_DEFAULT_SPEC ""
1023
1024 /* Override svr4.h definition.  */
1025 #undef  ENDFILE_SPEC
1026 #define ENDFILE_SPEC "\
1027 %{mads: crtsavres.o%s %(endfile_ads)} \
1028 %{myellowknife: crtsavres.o%s %(endfile_yellowknife)} \
1029 %{mmvme: crtsavres.o%s %(endfile_mvme)} \
1030 %{msim: crtsavres.o%s %(endfile_sim)} \
1031 %{mwindiss: %(endfile_windiss)} \
1032 %{mcall-freebsd: crtsavres.o%s %(endfile_freebsd) } \
1033 %{mcall-linux: crtsavres.o%s %(endfile_linux) } \
1034 %{mcall-gnu: crtsavres.o%s %(endfile_gnu) } \
1035 %{mcall-netbsd: crtsavres.o%s %(endfile_netbsd) } \
1036 %{mvxworks: crtsavres.o%s %(endfile_vxworks) } \
1037 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1038          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1039          %{!mcall-netbsd: %{!mvxworks: %(crtsavres_default) \
1040                                        %(endfile_default) }}}}}}}}}}"
1041
1042 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
1043
1044 #define ENDFILE_DEFAULT_SPEC ""
1045
1046 /* Motorola ADS support.  */
1047 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1048
1049 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1050
1051 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1052
1053 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1054
1055 #define LINK_OS_ADS_SPEC ""
1056
1057 #define CPP_OS_ADS_SPEC ""
1058
1059 /* Motorola Yellowknife support.  */
1060 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1061
1062 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1063
1064 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1065
1066 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1067
1068 #define LINK_OS_YELLOWKNIFE_SPEC ""
1069
1070 #define CPP_OS_YELLOWKNIFE_SPEC ""
1071
1072 /* Motorola MVME support.  */
1073 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1074
1075 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1076
1077 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1078
1079 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1080
1081 #define LINK_OS_MVME_SPEC ""
1082
1083 #define CPP_OS_MVME_SPEC ""
1084
1085 /* PowerPC simulator based on netbsd system calls support.  */
1086 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1087
1088 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1089
1090 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1091
1092 #define LINK_START_SIM_SPEC ""
1093
1094 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1095
1096 #define CPP_OS_SIM_SPEC ""
1097
1098 /* FreeBSD support.  */
1099
1100 #define CPP_OS_FREEBSD_SPEC     "\
1101   -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1102   -Acpu=powerpc -Amachine=powerpc"
1103
1104 #define STARTFILE_FREEBSD_SPEC  FBSD_STARTFILE_SPEC
1105 #define ENDFILE_FREEBSD_SPEC    FBSD_ENDFILE_SPEC
1106 #define LIB_FREEBSD_SPEC        FBSD_LIB_SPEC
1107 #define LINK_START_FREEBSD_SPEC ""
1108
1109 #define LINK_OS_FREEBSD_SPEC "\
1110   %{symbolic:-Bsymbolic}"
1111
1112 /* GNU/Linux support.  */
1113 #ifdef USE_GNULIBC_1
1114 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1115 %{!mnewlib: -lc }"
1116 #else
1117 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1118 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1119 %{profile:-lc_p} %{!profile:-lc}}}"
1120 #endif
1121
1122 #ifdef USE_GNULIBC_1
1123 #define STARTFILE_LINUX_SPEC "\
1124 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1125 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1126 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1127 #else
1128 #define STARTFILE_LINUX_SPEC "\
1129 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1130 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1131 %{static:crtbeginT.o%s} \
1132 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
1133 #endif
1134
1135 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1136 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1137
1138 #define LINK_START_LINUX_SPEC ""
1139
1140 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1141   %{rdynamic:-export-dynamic} \
1142   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1143
1144 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
1145 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1146 #endif
1147
1148 #ifdef USE_GNULIBC_1
1149 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1150 %{!undef:                                                         \
1151   %{!ansi:                                                        \
1152     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1153     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1154 -Asystem=unix -Asystem=posix"
1155 #else
1156 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1157 %{!undef:                                                         \
1158   %{!ansi:                                                        \
1159     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1160     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1161 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1162 #endif
1163
1164 /* GNU/Hurd support.  */
1165 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1166 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1167 %{profile:-lc_p} %{!profile:-lc}}}"
1168
1169 #define STARTFILE_GNU_SPEC "\
1170 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1171 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1172 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1173 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1174
1175 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1176 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1177
1178 #define LINK_START_GNU_SPEC ""
1179
1180 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1181   %{rdynamic:-export-dynamic} \
1182   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1183
1184 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__    \
1185 %{!undef:                                                       \
1186   %{!ansi: -Dunix -D__unix}}                                    \
1187 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1188
1189 /* NetBSD support.  */
1190 #define LIB_NETBSD_SPEC "\
1191 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1192
1193 #define STARTFILE_NETBSD_SPEC "\
1194 ncrti.o%s crt0.o%s \
1195 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1196
1197 #define ENDFILE_NETBSD_SPEC "\
1198 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1199 ncrtn.o%s"
1200
1201 #define LINK_START_NETBSD_SPEC "\
1202 "
1203
1204 #define LINK_OS_NETBSD_SPEC "\
1205 %{!shared: %{!static: \
1206   %{rdynamic:-export-dynamic} \
1207   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1208
1209 #define CPP_OS_NETBSD_SPEC "\
1210 -D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
1211
1212 /* VxWorks support.  */
1213 /* VxWorks does all the library stuff itself.  */
1214 #define LIB_VXWORKS_SPEC ""
1215
1216 /* VxWorks provides the functionality of crt0.o and friends itself.  */
1217
1218 #define STARTFILE_VXWORKS_SPEC ""
1219
1220 #define ENDFILE_VXWORKS_SPEC ""
1221
1222 /* Because it uses ld -r, vxworks has no start/end files, nor starting
1223    address.  */
1224
1225 #define LINK_START_VXWORKS_SPEC ""
1226
1227 #define LINK_OS_VXWORKS_SPEC "-r"
1228
1229 #define CPP_OS_VXWORKS_SPEC "\
1230 -DCPU_FAMILY=PPC \
1231 %{!mcpu*: \
1232   %{mpowerpc*: -DCPU=PPC603} \
1233   %{!mno-powerpc: -DCPU=PPC603}} \
1234 %{mcpu=powerpc: -DCPU=PPC603} \
1235 %{mcpu=401: -DCPU=PPC403} \
1236 %{mcpu=403: -DCPU=PPC403} \
1237 %{mcpu=405: -DCPU=PPC405} \
1238 %{mcpu=601: -DCPU=PPC601} \
1239 %{mcpu=602: -DCPU=PPC603} \
1240 %{mcpu=603: -DCPU=PPC603} \
1241 %{mcpu=603e: -DCPU=PPC603} \
1242 %{mcpu=ec603e: -DCPU=PPC603} \
1243 %{mcpu=604: -DCPU=PPC604} \
1244 %{mcpu=604e: -DCPU=PPC604} \
1245 %{mcpu=620: -DCPU=PPC604} \
1246 %{mcpu=740: -DCPU=PPC603} \
1247 %{mcpu=7450: -DCPU=PPC603} \
1248 %{mcpu=750: -DCPU=PPC603} \
1249 %{mcpu=801: -DCPU=PPC603} \
1250 %{mcpu=821: -DCPU=PPC603} \
1251 %{mcpu=823: -DCPU=PPC603} \
1252 %{mcpu=860: -DCPU=PPC603}"
1253
1254 /* WindISS support.  */
1255
1256 #define LIB_WINDISS_SPEC "--start-group -li -lcfp -lwindiss -lram -limpl -limpfp --end-group"
1257
1258 #define CPP_OS_WINDISS_SPEC "\
1259 -D__rtasim \
1260 -D__EABI__ \
1261 -D__ppc \
1262 %{!msoft-float: -D__hardfp} \
1263 "
1264
1265 #define STARTFILE_WINDISS_SPEC "crt0.o%s crtbegin.o%s"
1266
1267 #define ENDFILE_WINDISS_SPEC "crtend.o%s"
1268
1269 #define LINK_START_WINDISS_SPEC ""
1270
1271 #define LINK_OS_WINDISS_SPEC ""
1272
1273 /* Define any extra SPECS that the compiler needs to generate.  */
1274 /* Override rs6000.h definition.  */
1275 #undef  SUBTARGET_EXTRA_SPECS
1276 #define SUBTARGET_EXTRA_SPECS                                           \
1277   { "cpp_sysv",                 CPP_SYSV_SPEC },                        \
1278   { "crtsavres_default",        CRTSAVRES_DEFAULT_SPEC },              \
1279   { "lib_ads",                  LIB_ADS_SPEC },                         \
1280   { "lib_yellowknife",          LIB_YELLOWKNIFE_SPEC },                 \
1281   { "lib_mvme",                 LIB_MVME_SPEC },                        \
1282   { "lib_sim",                  LIB_SIM_SPEC },                         \
1283   { "lib_freebsd",              LIB_FREEBSD_SPEC },                     \
1284   { "lib_gnu",                  LIB_GNU_SPEC },                         \
1285   { "lib_linux",                LIB_LINUX_SPEC },                       \
1286   { "lib_netbsd",               LIB_NETBSD_SPEC },                      \
1287   { "lib_vxworks",              LIB_VXWORKS_SPEC },                     \
1288   { "lib_windiss",              LIB_WINDISS_SPEC },                     \
1289   { "lib_default",              LIB_DEFAULT_SPEC },                     \
1290   { "startfile_ads",            STARTFILE_ADS_SPEC },                   \
1291   { "startfile_yellowknife",    STARTFILE_YELLOWKNIFE_SPEC },           \
1292   { "startfile_mvme",           STARTFILE_MVME_SPEC },                  \
1293   { "startfile_sim",            STARTFILE_SIM_SPEC },                   \
1294   { "startfile_freebsd",        STARTFILE_FREEBSD_SPEC },               \
1295   { "startfile_gnu",            STARTFILE_GNU_SPEC },                   \
1296   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
1297   { "startfile_netbsd",         STARTFILE_NETBSD_SPEC },                \
1298   { "startfile_vxworks",        STARTFILE_VXWORKS_SPEC },               \
1299   { "startfile_windiss",        STARTFILE_WINDISS_SPEC },               \
1300   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
1301   { "endfile_ads",              ENDFILE_ADS_SPEC },                     \
1302   { "endfile_yellowknife",      ENDFILE_YELLOWKNIFE_SPEC },             \
1303   { "endfile_mvme",             ENDFILE_MVME_SPEC },                    \
1304   { "endfile_sim",              ENDFILE_SIM_SPEC },                     \
1305   { "endfile_freebsd",          ENDFILE_FREEBSD_SPEC },                 \
1306   { "endfile_gnu",              ENDFILE_GNU_SPEC },                     \
1307   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
1308   { "endfile_netbsd",           ENDFILE_NETBSD_SPEC },                  \
1309   { "endfile_vxworks",          ENDFILE_VXWORKS_SPEC },                 \
1310   { "endfile_windiss",          ENDFILE_WINDISS_SPEC },                 \
1311   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
1312   { "link_path",                LINK_PATH_SPEC },                       \
1313   { "link_shlib",               LINK_SHLIB_SPEC },                      \
1314   { "link_target",              LINK_TARGET_SPEC },                     \
1315   { "link_start",               LINK_START_SPEC },                      \
1316   { "link_start_ads",           LINK_START_ADS_SPEC },                  \
1317   { "link_start_yellowknife",   LINK_START_YELLOWKNIFE_SPEC },          \
1318   { "link_start_mvme",          LINK_START_MVME_SPEC },                 \
1319   { "link_start_sim",           LINK_START_SIM_SPEC },                  \
1320   { "link_start_freebsd",       LINK_START_FREEBSD_SPEC },              \
1321   { "link_start_gnu",           LINK_START_GNU_SPEC },                  \
1322   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
1323   { "link_start_netbsd",        LINK_START_NETBSD_SPEC },               \
1324   { "link_start_vxworks",       LINK_START_VXWORKS_SPEC },              \
1325   { "link_start_windiss",       LINK_START_WINDISS_SPEC },              \
1326   { "link_start_default",       LINK_START_DEFAULT_SPEC },              \
1327   { "link_os",                  LINK_OS_SPEC },                         \
1328   { "link_os_ads",              LINK_OS_ADS_SPEC },                     \
1329   { "link_os_yellowknife",      LINK_OS_YELLOWKNIFE_SPEC },             \
1330   { "link_os_mvme",             LINK_OS_MVME_SPEC },                    \
1331   { "link_os_sim",              LINK_OS_SIM_SPEC },                     \
1332   { "link_os_freebsd",          LINK_OS_FREEBSD_SPEC },                 \
1333   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
1334   { "link_os_gnu",              LINK_OS_GNU_SPEC },                     \
1335   { "link_os_netbsd",           LINK_OS_NETBSD_SPEC },                  \
1336   { "link_os_vxworks",          LINK_OS_VXWORKS_SPEC },                 \
1337   { "link_os_windiss",          LINK_OS_WINDISS_SPEC },                 \
1338   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
1339   { "cc1_endian_big",           CC1_ENDIAN_BIG_SPEC },                  \
1340   { "cc1_endian_little",        CC1_ENDIAN_LITTLE_SPEC },               \
1341   { "cc1_endian_default",       CC1_ENDIAN_DEFAULT_SPEC },              \
1342   { "cpp_os_ads",               CPP_OS_ADS_SPEC },                      \
1343   { "cpp_os_yellowknife",       CPP_OS_YELLOWKNIFE_SPEC },              \
1344   { "cpp_os_mvme",              CPP_OS_MVME_SPEC },                     \
1345   { "cpp_os_sim",               CPP_OS_SIM_SPEC },                      \
1346   { "cpp_os_freebsd",           CPP_OS_FREEBSD_SPEC },                  \
1347   { "cpp_os_gnu",               CPP_OS_GNU_SPEC },                      \
1348   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
1349   { "cpp_os_netbsd",            CPP_OS_NETBSD_SPEC },                   \
1350   { "cpp_os_vxworks",           CPP_OS_VXWORKS_SPEC },                  \
1351   { "cpp_os_windiss",           CPP_OS_WINDISS_SPEC },                  \
1352   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
1353
1354 /* Define this macro as a C expression for the initializer of an
1355    array of string to tell the driver program which options are
1356    defaults for this target and thus do not need to be handled
1357    specially when using `MULTILIB_OPTIONS'.
1358
1359    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1360    the target makefile fragment or if none of the options listed in
1361    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
1362
1363 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1364
1365 /* Define this macro if the code for function profiling should come
1366    before the function prologue.  Normally, the profiling code comes
1367    after.  */
1368 #define PROFILE_BEFORE_PROLOGUE 1
1369
1370 /* Function name to call to do profiling.  */
1371 #define RS6000_MCOUNT "_mcount"
1372
1373 /* Define this macro (to a value of 1) if you want to support the
1374    Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1375    pack(pop)'.  The pack(push,<n>) pragma specifies the maximum
1376    alignment (in bytes) of fields within a structure, in much the
1377    same way as the __aligned__' and __packed__' __attribute__'s
1378    do.  A pack value of zero resets the behaviour to the default.
1379    Successive invocations of this pragma cause the previous values to
1380    be stacked, so that invocations of #pragma pack(pop)' will return
1381    to the previous value.  */
1382
1383 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1384
1385 /* Define library calls for quad FP operations.  These are all part of the
1386    PowerPC 32bit ABI.  */
1387 #define ADDTF3_LIBCALL "_q_add"
1388 #define DIVTF3_LIBCALL "_q_div"
1389 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1390 #define EQTF2_LIBCALL "_q_feq"
1391 #define GETF2_LIBCALL "_q_fge"
1392 #define GTTF2_LIBCALL "_q_fgt"
1393 #define LETF2_LIBCALL "_q_fle"
1394 #define LTTF2_LIBCALL "_q_flt"
1395 #define NETF2_LIBCALL "_q_fne"
1396 #define FLOATSITF2_LIBCALL "_q_itoq"
1397 #define MULTF3_LIBCALL "_q_mul"
1398 #define NEGTF2_LIBCALL "_q_neg"
1399 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1400 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1401 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1402 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1403 #define SQRTTF_LIBCALL "_q_sqrt"
1404 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1405 #define SUBTF3_LIBCALL "_q_sub"
1406 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1407
1408 #define INIT_TARGET_OPTABS                                              \
1409   do {                                                                  \
1410     if (TARGET_HARD_FLOAT)                                              \
1411       {                                                                 \
1412         add_optab->handlers[(int) TFmode].libfunc                       \
1413           = init_one_libfunc (ADDTF3_LIBCALL);                          \
1414         sub_optab->handlers[(int) TFmode].libfunc                       \
1415           = init_one_libfunc (SUBTF3_LIBCALL);                          \
1416         neg_optab->handlers[(int) TFmode].libfunc                       \
1417           = init_one_libfunc (NEGTF2_LIBCALL);                          \
1418         smul_optab->handlers[(int) TFmode].libfunc                      \
1419           = init_one_libfunc (MULTF3_LIBCALL);                          \
1420         sdiv_optab->handlers[(int) TFmode].libfunc                      \
1421           = init_one_libfunc (DIVTF3_LIBCALL);                          \
1422         eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL);               \
1423         netf2_libfunc = init_one_libfunc (NETF2_LIBCALL);               \
1424         gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL);               \
1425         getf2_libfunc = init_one_libfunc (GETF2_LIBCALL);               \
1426         lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL);               \
1427         letf2_libfunc = init_one_libfunc (LETF2_LIBCALL);               \
1428         trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL);     \
1429         trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL);     \
1430         extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL);   \
1431         extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL);   \
1432         floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL);      \
1433         fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL);    \
1434         fixunstfsi_libfunc                                              \
1435           = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL);               \
1436         if (TARGET_PPC_GPOPT || TARGET_POWER2)                          \
1437           sqrt_optab->handlers[(int) TFmode].libfunc                    \
1438             = init_one_libfunc (SQRTTF_LIBCALL);                        \
1439       }                                                                 \
1440   } while (0)
1441
1442 /* Select a format to encode pointers in exception handling data.  CODE
1443    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
1444    true if the symbol may be affected by dynamic relocations.  */
1445 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                            \
1446   ((flag_pic || TARGET_RELOCATABLE)                                          \
1447    ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1448    : DW_EH_PE_absptr)
1449
1450 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1451
1452 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1453
1454 /* Generate entries in .fixup for relocatable addresses.  */
1455 #define RELOCATABLE_NEEDS_FIXUP