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
 400 /* Use ELF style section commands.  */
 401
 402 #define TEXT_SECTION_ASM_OP     "\t.section\t\".text\""
 403
 404 #define DATA_SECTION_ASM_OP     "\t.section\t\".data\""
 405
 406 #define BSS_SECTION_ASM_OP      "\t.section\t\".bss\""
 407
 408 /* Override elfos.h definition.  */
 409 #undef  INIT_SECTION_ASM_OP
 410 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
 411
 412 /* Override elfos.h definition.  */
 413 #undef  FINI_SECTION_ASM_OP
 414 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
 415
 416 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
 417
 418 /* Put PC relative got entries in .got2.  */
 419 #define MINIMAL_TOC_SECTION_ASM_OP \
 420   ((TARGET_RELOCATABLE || flag_pic) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
 421
 422 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
 423 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
 424 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
 425
 426 /* Besides the usual ELF sections, we need a toc section.  */
 427 /* Override elfos.h definition.  */
 428 #undef  EXTRA_SECTIONS
 429 #define EXTRA_SECTIONS in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
 430
 431 /* Override elfos.h definition.  */
 432 #undef  EXTRA_SECTION_FUNCTIONS
 433 #define EXTRA_SECTION_FUNCTIONS                                         \
 434   TOC_SECTION_FUNCTION                                                  \
 435   SDATA_SECTION_FUNCTION                                                \
 436   SDATA2_SECTION_FUNCTION                                               \
 437   SBSS_SECTION_FUNCTION                                                 \
 438   INIT_SECTION_FUNCTION                                                 \
 439   FINI_SECTION_FUNCTION
 440
 441 #define TOC_SECTION_FUNCTION                                            \
 442 void                                                                    \
 443 toc_section ()                                                          \
 444 {                                                                       \
 445   if (in_section != in_toc)                                             \
 446     {                                                                   \
 447       in_section = in_toc;                                              \
 448       if (DEFAULT_ABI == ABI_AIX                                        \
 449           && TARGET_MINIMAL_TOC                                         \
 450           && !TARGET_RELOCATABLE)                                       \
 451         {                                                               \
 452           if (! toc_initialized)                                        \
 453             {                                                           \
 454               toc_initialized = 1;                                      \
 455               fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);       \
 456               ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LCTOC", 0);     \
 457               fprintf (asm_out_file, "\t.tc ");                         \
 458               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
 459               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 460               fprintf (asm_out_file, "\n");                             \
 461                                                                         \
 462               fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 463               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 464               fprintf (asm_out_file, " = .+32768\n");                   \
 465             }                                                           \
 466           else                                                          \
 467             fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 468         }                                                               \
 469       else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE)           \
 470         fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);             \
 471       else                                                              \
 472         {                                                               \
 473           fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);   \
 474           if (! toc_initialized)                                        \
 475             {                                                           \
 476               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 477               fprintf (asm_out_file, " = .+32768\n");                   \
 478               toc_initialized = 1;                                      \
 479             }                                                           \
 480         }                                                               \
 481     }                                                                   \
 482 }                                                                       \
 483                                                                         \
 484 extern int in_toc_section PARAMS ((void));                              \
 485 int in_toc_section ()                                                   \
 486 {                                                                       \
 487   return in_section == in_toc;                                          \
 488 }
 489
 490 #define SDATA_SECTION_FUNCTION                                          \
 491 void                                                                    \
 492 sdata_section ()                                                        \
 493 {                                                                       \
 494   if (in_section != in_sdata)                                           \
 495     {                                                                   \
 496       in_section = in_sdata;                                            \
 497       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \
 498     }                                                                   \
 499 }
 500
 501 #define SDATA2_SECTION_FUNCTION                                         \
 502 void                                                                    \
 503 sdata2_section ()                                                       \
 504 {                                                                       \
 505   if (in_section != in_sdata2)                                          \
 506     {                                                                   \
 507       in_section = in_sdata2;                                           \
 508       fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP);            \
 509     }                                                                   \
 510 }
 511
 512 #define SBSS_SECTION_FUNCTION                                           \
 513 void                                                                    \
 514 sbss_section ()                                                         \
 515 {                                                                       \
 516   if (in_section != in_sbss)                                            \
 517     {                                                                   \
 518       in_section = in_sbss;                                             \
 519       fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP);              \
 520     }                                                                   \
 521 }
 522
 523 #define INIT_SECTION_FUNCTION                                           \
 524 void                                                                    \
 525 init_section ()                                                         \
 526 {                                                                       \
 527   if (in_section != in_init)                                            \
 528     {                                                                   \
 529       in_section = in_init;                                             \
 530       fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP);              \
 531     }                                                                   \
 532 }
 533
 534 #define FINI_SECTION_FUNCTION                                           \
 535 void                                                                    \
 536 fini_section ()                                                         \
 537 {                                                                       \
 538   if (in_section != in_fini)                                            \
 539     {                                                                   \
 540       in_section = in_fini;                                             \
 541       fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP);              \
 542     }                                                                   \
 543 }
 544
 545 /* Override default elf definitions.  */
 546 #undef  TARGET_ASM_SELECT_RTX_SECTION
 547 #define TARGET_ASM_SELECT_RTX_SECTION rs6000_elf_select_rtx_section
 548 #undef  TARGET_ASM_SELECT_SECTION
 549 #define TARGET_ASM_SELECT_SECTION  rs6000_elf_select_section
 550 #define TARGET_ASM_UNIQUE_SECTION  rs6000_elf_unique_section
 551
 552 /* Return non-zero if this entry is to be written into the constant pool
 553    in a special way.  We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
 554    containing one of them.  If -mfp-in-toc (the default), we also do
 555    this for floating-point constants.  We actually can only do this
 556    if the FP formats of the target and host machines are the same, but
 557    we can't check that since not every file that uses
 558    GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
 559
 560    Unlike AIX, we don't key off of -mminimal-toc, but instead do not
 561    allow floating point constants in the TOC if -mrelocatable.  */
 562
 563 #undef  ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
 564 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE)                        \
 565   (TARGET_TOC                                                           \
 566    && (GET_CODE (X) == SYMBOL_REF                                       \
 567        || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS      \
 568            && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF)           \
 569        || GET_CODE (X) == LABEL_REF                                     \
 570        || (GET_CODE (X) == CONST_INT                                    \
 571            && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode))      \
 572        || (!TARGET_NO_FP_IN_TOC                                         \
 573            && !TARGET_RELOCATABLE                                       \
 574            && GET_CODE (X) == CONST_DOUBLE                              \
 575            && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT               \
 576            && BITS_PER_WORD == HOST_BITS_PER_INT)))
 577
 578 /* These macros generate the special .type and .size directives which
 579    are used to set the corresponding fields of the linker symbol table
 580    entries in an ELF object file under SVR4.  These macros also output
 581    the starting labels for the relevant functions/objects.  */
 582
 583 /* Write the extra assembler code needed to declare a function properly.
 584    Some svr4 assemblers need to also have something extra said about the
 585    function's return value.  We allow for that here.  */
 586
 587 extern int rs6000_pic_labelno;
 588
 589 /* Override elfos.h definition.  */
 590 #undef  ASM_DECLARE_FUNCTION_NAME
 591 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 592   do {                                                                  \
 593     const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long";    \
 594                                                                         \
 595     if (TARGET_RELOCATABLE                                              \
 596         && (get_pool_size () != 0 || current_function_profile)          \
 597         && uses_TOC())                                                  \
 598       {                                                                 \
 599         char buf[256];                                                  \
 600                                                                         \
 601         ASM_OUTPUT_INTERNAL_LABEL (FILE, "LCL", rs6000_pic_labelno);    \
 602                                                                         \
 603         ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1);                  \
 604         fprintf (FILE, "\t%s ", init_ptr);                              \
 605         assemble_name (FILE, buf);                                      \
 606         putc ('-', FILE);                                               \
 607         ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno);   \
 608         assemble_name (FILE, buf);                                      \
 609         putc ('\n', FILE);                                              \
 610       }                                                                 \
 611                                                                         \
 612     ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");                 \
 613     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
 614                                                                         \
 615     if (DEFAULT_ABI == ABI_AIX)                                         \
 616       {                                                                 \
 617         const char *desc_name, *orig_name;                              \
 618                                                                         \
 619         orig_name = (*targetm.strip_name_encoding) (NAME);              \
 620         desc_name = orig_name;                                          \
 621         while (*desc_name == '.')                                       \
 622           desc_name++;                                                  \
 623                                                                         \
 624         if (TREE_PUBLIC (DECL))                                         \
 625           fprintf (FILE, "\t.globl %s\n", desc_name);                   \
 626                                                                         \
 627         fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);             \
 628         fprintf (FILE, "%s:\n", desc_name);                             \
 629         fprintf (FILE, "\t%s %s\n", init_ptr, orig_name);               \
 630         fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr);       \
 631         if (DEFAULT_ABI == ABI_AIX)                                     \
 632           fprintf (FILE, "\t%s 0\n", init_ptr);                         \
 633         fprintf (FILE, "\t.previous\n");                                \
 634       }                                                                 \
 635     ASM_OUTPUT_LABEL (FILE, NAME);                                      \
 636   } while (0)
 637
 638 /* A C compound statement that outputs the assembler code for a thunk function,
 639     used to implement C++ virtual function calls with multiple inheritance.  The
 640     thunk acts as a wrapper around a virtual function, adjusting the implicit
 641     object parameter before handing control off to the real function.
 642
 643     First, emit code to add the integer DELTA to the location that contains the
 644     incoming first argument.  Assume that this argument contains a pointer, and
 645     is the one used to pass the this' pointer in C++.  This is the incoming
 646     argument *before* the function prologue, e.g. %o0' on a sparc.  The
 647     addition must preserve the values of all other incoming arguments.
 648
 649     After the addition, emit code to jump to FUNCTION, which is a
 650     FUNCTION_DECL'.  This is a direct pure jump, not a call, and does not touch
 651     the return address.  Hence returning from FUNCTION will return to whoever
 652     called the current thunk'.
 653
 654     The effect must be as if FUNCTION had been called directly with the adjusted
 655     first argument.  This macro is responsible for emitting all of the code for
 656     a thunk function; FUNCTION_PROLOGUE' and FUNCTION_EPILOGUE' are not
 657     invoked.
 658
 659     The THUNK_FNDECL is redundant.  (DELTA and FUNCTION have already been
 660     extracted from it.)  It might possibly be useful on some targets, but
 661     probably not.
 662
 663     If you do not define this macro, the target-independent code in the C++
 664     frontend will generate a less efficient heavyweight thunk that calls
 665     FUNCTION instead of jumping to it.  The generic approach does not support
 666     varargs.  */
 667
 668 #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
 669   output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
 670
 671 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
 672    flag.  The LOCAL_LABEL_PREFIX variable is used by dbxelf.h.  */
 673
 674 #define LOCAL_LABEL_PREFIX "."
 675 #define USER_LABEL_PREFIX ""
 676
 677 /* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL.  */
 678
 679 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)   \
 680   asm_fprintf (FILE, "%L%s", PREFIX)
 681
 682 /* Globalizing directive for a label.  */
 683 #define GLOBAL_ASM_OP "\t.globl "
 684
 685 /* This says how to output assembler code to declare an
 686    uninitialized internal linkage data object.  Under SVR4,
 687    the linker seems to want the alignment of data objects
 688    to depend on their types.  We do exactly that here.  */
 689
 690 #define LOCAL_ASM_OP    "\t.local\t"
 691
 692 #define LCOMM_ASM_OP    "\t.lcomm\t"
 693
 694 /* Override elfos.h definition.  */
 695 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 696 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 697 do {                                                                    \
 698   if (rs6000_sdata != SDATA_NONE && (SIZE) > 0                          \
 699       && (SIZE) <= g_switch_value)                                      \
 700     {                                                                   \
 701       sbss_section ();                                                  \
 702       ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));      \
 703       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 704       ASM_OUTPUT_SKIP (FILE, SIZE);                                     \
 705       if (!flag_inhibit_size_directive && (SIZE) > 0)                   \
 706         ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE);                   \
 707     }                                                                   \
 708   else                                                                  \
 709     {                                                                   \
 710       fprintf (FILE, "%s", LCOMM_ASM_OP);                               \
 711       assemble_name ((FILE), (NAME));                                   \
 712       fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT);    \
 713     }                                                                   \
 714 } while (0)
 715
 716 /* Describe how to emit uninitialized external linkage items.  */
 717 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 718 do {                                                                    \
 719   (*targetm.asm_out.globalize_label) (FILE, NAME);                      \
 720   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 721 } while (0)
 722
 723 /* This is how to output code to push a register on the stack.
 724    It need not be very fast code.
 725
 726    On the rs6000, we must keep the backchain up to date.  In order
 727    to simplify things, always allocate 16 bytes for a push (System V
 728    wants to keep stack aligned to a 16 byte boundary).  */
 729
 730 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO)                                \
 731 do {                                                                    \
 732   if (DEFAULT_ABI == ABI_V4)                                            \
 733     asm_fprintf (FILE,                                                  \
 734                  "\t{stu|stwu} %s,-16(%s)\n\t{st|stw} %s,12(%s)\n",     \
 735                  reg_names[1], reg_names[1], reg_names[REGNO],          \
 736                  reg_names[1]);                                         \
 737 } while (0)
 738
 739 /* This is how to output an insn to pop a register from the stack.
 740    It need not be very fast code.  */
 741
 742 #define ASM_OUTPUT_REG_POP(FILE, REGNO)                                 \
 743 do {                                                                    \
 744   if (DEFAULT_ABI == ABI_V4)                                            \
 745     asm_fprintf (FILE,                                                  \
 746                  "\t{l|lwz} %s,12(%s)\n\t{ai|addic} %s,%s,16\n",        \
 747                  reg_names[REGNO], reg_names[1], reg_names[1],          \
 748                  reg_names[1]);                                         \
 749 } while (0)
 750
 751 /* Switch  Recognition by gcc.c.  Add -G xx support.  */
 752
 753 /* Override svr4.h definition.  */
 754 #undef  SWITCH_TAKES_ARG
 755 #define SWITCH_TAKES_ARG(CHAR)                                          \
 756   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o'                      \
 757    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u'                   \
 758    || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x'                   \
 759    || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V'                   \
 760    || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
 761
 762 /* Output .file.  */
 763 /* Override elfos.h definition.  */
 764 #undef  ASM_FILE_START
 765 #define ASM_FILE_START(FILE)                                            \
 766 do {                                                                    \
 767   output_file_directive ((FILE), main_input_filename);                  \
 768   rs6000_file_start (FILE, TARGET_CPU_DEFAULT);                         \
 769 } while (0)
 770
 771
 772 extern int fixuplabelno;
 773
 774 /* Handle constructors specially for -mrelocatable.  */
 775 #define TARGET_ASM_CONSTRUCTOR  rs6000_elf_asm_out_constructor
 776 #define TARGET_ASM_DESTRUCTOR   rs6000_elf_asm_out_destructor
 777
 778 /* This is the end of what might become sysv4.h.  */
 779
 780 /* Use DWARF 2 debugging information by default.  */
 781 #undef  PREFERRED_DEBUGGING_TYPE
 782 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 783
 784 /* Historically we have also supported stabs debugging.  */
 785 #define DBX_DEBUGGING_INFO
 786
 787 #define TARGET_ENCODE_SECTION_INFO  rs6000_elf_encode_section_info
 788 #define TARGET_STRIP_NAME_ENCODING  rs6000_elf_strip_name_encoding
 789
 790 /* The ELF version doesn't encode [DS] or whatever at the end of symbols.  */
 791
 792 #define RS6000_OUTPUT_BASENAME(FILE, NAME)      \
 793     assemble_name (FILE, NAME)
 794
 795 /* This is how to output a reference to a user-level label named NAME.
 796    `assemble_name' uses this.  */
 797
 798 /* Override elfos.h definition.  */
 799 #undef  ASM_OUTPUT_LABELREF
 800 #define ASM_OUTPUT_LABELREF(FILE,NAME)          \
 801 do {                                            \
 802   const char *_name = NAME;                     \
 803   if (*_name == '@')                            \
 804     _name++;                                    \
 805                                                 \
 806   if (*_name == '*')                            \
 807     fprintf (FILE, "%s", _name + 1);            \
 808   else                                          \
 809     asm_fprintf (FILE, "%U%s", _name);          \
 810 } while (0)
 811
 812 /* But, to make this work, we have to output the stabs for the function
 813    name *first*...  */
 814
 815 #define DBX_FUNCTION_FIRST
 816
 817 /* This is the end of what might become sysv4dbx.h.  */
 818
 819 #ifndef TARGET_VERSION
 820 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
 821 #endif
 822 \f
 823 #ifndef TARGET_OS_CPP_BUILTINS
 824 #define TARGET_OS_CPP_BUILTINS()          \
 825   do                                      \
 826     {                                     \
 827       builtin_define_std ("PPC");         \
 828       builtin_define_std ("unix");        \
 829       builtin_define ("__svr4__");        \
 830       builtin_assert ("system=unix");     \
 831       builtin_assert ("system=svr4");     \
 832       builtin_assert ("cpu=powerpc");     \
 833       builtin_assert ("machine=powerpc"); \
 834     }                                     \
 835   while (0)
 836 #endif
 837
 838 /* Pass various options to the assembler.  */
 839 /* Override svr4.h definition.  */
 840 #undef  ASM_SPEC
 841 #define ASM_SPEC "%(asm_cpu) \
 842 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
 843 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
 844 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
 845 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
 846 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
 847 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 848     %{mcall-freebsd: -mbig} \
 849     %{mcall-i960-old: -mlittle} \
 850     %{mcall-linux: -mbig} \
 851     %{mcall-gnu: -mbig} \
 852     %{mcall-netbsd: -mbig} \
 853 }}}}"
 854
 855 #define CC1_ENDIAN_BIG_SPEC ""
 856
 857 #define CC1_ENDIAN_LITTLE_SPEC "\
 858 %{!mstrict-align: %{!mno-strict-align: \
 859     %{!mcall-i960-old: \
 860         -mstrict-align \
 861     } \
 862 }}"
 863
 864 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
 865
 866 /* Pass -G xxx to the compiler and set correct endian mode.  */
 867 #define CC1_SPEC "%{G*} \
 868 %{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
 869 %{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
 870 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 871     %{mcall-aixdesc: -mbig %(cc1_endian_big) } \
 872     %{mcall-freebsd: -mbig %(cc1_endian_big) } \
 873     %{mcall-i960-old: -mlittle %(cc1_endian_little) } \
 874     %{mcall-linux: -mbig %(cc1_endian_big) } \
 875     %{mcall-gnu: -mbig %(cc1_endian_big) } \
 876     %{mcall-netbsd: -mbig %(cc1_endian_big) } \
 877     %{!mcall-aixdesc: %{!mcall-freebsd: %{!mcall-i960-old: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: \
 878             %(cc1_endian_default) \
 879     }}}}}} \
 880 }}}} \
 881 %{mno-sdata: -msdata=none } \
 882 %{meabi: %{!mcall-*: -mcall-sysv }} \
 883 %{!meabi: %{!mno-eabi: \
 884     %{mrelocatable: -meabi } \
 885     %{mcall-freebsd: -mno-eabi } \
 886     %{mcall-i960-old: -meabi } \
 887     %{mcall-linux: -mno-eabi } \
 888     %{mcall-gnu: -mno-eabi } \
 889     %{mcall-netbsd: -mno-eabi }}} \
 890 %{msdata: -msdata=default} \
 891 %{mno-sdata: -msdata=none} \
 892 %{profile: -p}"
 893
 894 /* Don't put -Y P,<path> for cross compilers.  */
 895 #ifndef CROSS_COMPILE
 896 #define LINK_PATH_SPEC "\
 897 %{!R*:%{L*:-R %*}} \
 898 %{!nostdlib: %{!YP,*: \
 899     %{compat-bsd: \
 900         %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 901         %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
 902         %{!R*: %{!L*: -R /usr/ucblib}} \
 903     %{!compat-bsd: \
 904         %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 905         %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
 906
 907 #else
 908 #define LINK_PATH_SPEC ""
 909 #endif
 910
 911 /* Default starting address if specified.  */
 912 #define LINK_START_SPEC "\
 913 %{mads: %(link_start_ads) } \
 914 %{myellowknife: %(link_start_yellowknife) } \
 915 %{mmvme: %(link_start_mvme) } \
 916 %{msim: %(link_start_sim) } \
 917 %{mwindiss: %(link_start_windiss) } \
 918 %{mcall-freebsd: %(link_start_freebsd) } \
 919 %{mcall-linux: %(link_start_linux) } \
 920 %{mcall-gnu: %(link_start_gnu) } \
 921 %{mcall-netbsd: %(link_start_netbsd) } \
 922 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
 923          %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd:   \
 924          %{!mcall-freebsd: %(link_start_default) }}}}}}}}}"
 925
 926 #define LINK_START_DEFAULT_SPEC ""
 927
 928 /* Override svr4.h definition.  */
 929 #undef  LINK_SPEC
 930 #define LINK_SPEC "\
 931 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
 932 %{YP,*} %{R*} \
 933 %{Qy:} %{!Qn:-Qy} \
 934 %(link_shlib) \
 935 %{!Wl,-T*: %{!T*: %(link_start) }} \
 936 %(link_target) \
 937 %(link_os)"
 938
 939 /* For now, turn off shared libraries by default.  */
 940 #ifndef SHARED_LIB_SUPPORT
 941 #define NO_SHARED_LIB_SUPPORT
 942 #endif
 943
 944 #ifndef NO_SHARED_LIB_SUPPORT
 945 /* Shared libraries are default.  */
 946 #define LINK_SHLIB_SPEC "\
 947 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
 948 %{mshlib: } \
 949 %{static:-dn -Bstatic} \
 950 %{shared:-G -dy -z text} \
 951 %{symbolic:-Bsymbolic -G -dy -z text}"
 952
 953 #else
 954 /* Shared libraries are not default.  */
 955 #define LINK_SHLIB_SPEC "\
 956 %{mshlib: %(link_path) } \
 957 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
 958 %{static: } \
 959 %{shared:-G -dy -z text %(link_path) } \
 960 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
 961 #endif
 962
 963 /* Override the default target of the linker.  */
 964 #define LINK_TARGET_SPEC "\
 965 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
 966 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 967     %{mcall-i960-old: --oformat elf32-powerpcle} \
 968   }}}}"
 969
 970 /* Any specific OS flags.  */
 971 #define LINK_OS_SPEC "\
 972 %{mads: %(link_os_ads) } \
 973 %{myellowknife: %(link_os_yellowknife) } \
 974 %{mmvme: %(link_os_mvme) } \
 975 %{msim: %(link_os_sim) } \
 976 %{mwindiss: %(link_os_windiss) } \
 977 %{mcall-freebsd: %(link_os_freebsd) } \
 978 %{mcall-linux: %(link_os_linux) } \
 979 %{mcall-gnu: %(link_os_gnu) } \
 980 %{mcall-netbsd: %(link_os_netbsd) } \
 981 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
 982          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
 983          %{!mcall-netbsd: %(link_os_default) }}}}}}}}}"
 984
 985 #define LINK_OS_DEFAULT_SPEC ""
 986
 987 #define CPP_SYSV_SPEC \
 988 "%{mrelocatable*: -D_RELOCATABLE} \
 989 %{fpic: -D__PIC__=1 -D__pic__=1} \
 990 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}}"
 991
 992 /* Override rs6000.h definition.  */
 993 #undef  CPP_SPEC
 994 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) \
 995 %{mads: %(cpp_os_ads) } \
 996 %{myellowknife: %(cpp_os_yellowknife) } \
 997 %{mmvme: %(cpp_os_mvme) } \
 998 %{msim: %(cpp_os_sim) } \
 999 %{mwindiss: %(cpp_os_windiss) } \
1000 %{mcall-freebsd: %(cpp_os_freebsd) } \
1001 %{mcall-linux: %(cpp_os_linux) } \
1002 %{mcall-gnu: %(cpp_os_gnu) } \
1003 %{mcall-netbsd: %(cpp_os_netbsd) } \
1004 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1005          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1006          %{!mcall-netbsd: %(cpp_os_default) }}}}}}}}}"
1007
1008 #define CPP_OS_DEFAULT_SPEC ""
1009
1010 /* Override svr4.h definition.  */
1011 #undef  STARTFILE_SPEC
1012 #define STARTFILE_SPEC "\
1013 %{mads: %(startfile_ads) } \
1014 %{myellowknife: %(startfile_yellowknife) } \
1015 %{mmvme: %(startfile_mvme) } \
1016 %{msim: %(startfile_sim) } \
1017 %{mwindiss: %(startfile_windiss) } \
1018 %{mcall-freebsd: %(startfile_freebsd) } \
1019 %{mcall-linux: %(startfile_linux) } \
1020 %{mcall-gnu: %(startfile_gnu) } \
1021 %{mcall-netbsd: %(startfile_netbsd) } \
1022 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1023          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1024          %{!mcall-netbsd: %(startfile_default) }}}}}}}}}"
1025
1026 #define STARTFILE_DEFAULT_SPEC ""
1027
1028 /* Override svr4.h definition.  */
1029 #undef  LIB_SPEC
1030 #define LIB_SPEC "\
1031 %{mads: %(lib_ads) } \
1032 %{myellowknife: %(lib_yellowknife) } \
1033 %{mmvme: %(lib_mvme) } \
1034 %{msim: %(lib_sim) } \
1035 %{mwindiss: %(lib_windiss) } \
1036 %{mcall-freebsd: %(lib_freebsd) } \
1037 %{mcall-linux: %(lib_linux) } \
1038 %{mcall-gnu: %(lib_gnu) } \
1039 %{mcall-netbsd: %(lib_netbsd) } \
1040 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1041          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1042          %{!mcall-netbsd: %(lib_default) }}}}}}}}}"
1043
1044 #define LIB_DEFAULT_SPEC ""
1045
1046 /* Override svr4.h definition.  */
1047 #undef  ENDFILE_SPEC
1048 #define ENDFILE_SPEC "\
1049 %{mads: crtsavres.o%s %(endfile_ads)} \
1050 %{myellowknife: crtsavres.o%s %(endfile_yellowknife)} \
1051 %{mmvme: crtsavres.o%s %(endfile_mvme)} \
1052 %{msim: crtsavres.o%s %(endfile_sim)} \
1053 %{mwindiss: %(endfile_windiss)} \
1054 %{mcall-freebsd: crtsavres.o%s %(endfile_freebsd) } \
1055 %{mcall-linux: crtsavres.o%s %(endfile_linux) } \
1056 %{mcall-gnu: crtsavres.o%s %(endfile_gnu) } \
1057 %{mcall-netbsd: crtsavres.o%s %(endfile_netbsd) } \
1058 %{mvxworks: crtsavres.o%s %(endfile_vxworks) } \
1059 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mwindiss: \
1060          %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: \
1061          %{!mcall-netbsd: %{!mvxworks: %(crtsavres_default) \
1062                                        %(endfile_default) }}}}}}}}}}"
1063
1064 #define CRTSAVRES_DEFAULT_SPEC "crtsavres.o%s"
1065
1066 #define ENDFILE_DEFAULT_SPEC ""
1067
1068 /* Motorola ADS support.  */
1069 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1070
1071 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1072
1073 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1074
1075 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1076
1077 #define LINK_OS_ADS_SPEC ""
1078
1079 #define CPP_OS_ADS_SPEC ""
1080
1081 /* Motorola Yellowknife support.  */
1082 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1083
1084 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1085
1086 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1087
1088 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1089
1090 #define LINK_OS_YELLOWKNIFE_SPEC ""
1091
1092 #define CPP_OS_YELLOWKNIFE_SPEC ""
1093
1094 /* Motorola MVME support.  */
1095 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1096
1097 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1098
1099 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1100
1101 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1102
1103 #define LINK_OS_MVME_SPEC ""
1104
1105 #define CPP_OS_MVME_SPEC ""
1106
1107 /* PowerPC simulator based on netbsd system calls support.  */
1108 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1109
1110 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1111
1112 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1113
1114 #define LINK_START_SIM_SPEC ""
1115
1116 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1117
1118 #define CPP_OS_SIM_SPEC ""
1119
1120 /* FreeBSD support.  */
1121
1122 #define CPP_OS_FREEBSD_SPEC     "\
1123   -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1124   -Acpu=powerpc -Amachine=powerpc"
1125
1126 #define STARTFILE_FREEBSD_SPEC  FBSD_STARTFILE_SPEC
1127 #define ENDFILE_FREEBSD_SPEC    FBSD_ENDFILE_SPEC
1128 #define LIB_FREEBSD_SPEC        FBSD_LIB_SPEC
1129 #define LINK_START_FREEBSD_SPEC ""
1130
1131 #define LINK_OS_FREEBSD_SPEC "\
1132   %{symbolic:-Bsymbolic}"
1133
1134 /* GNU/Linux support.  */
1135 #ifdef USE_GNULIBC_1
1136 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1137 %{!mnewlib: -lc }"
1138 #else
1139 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1140 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1141 %{profile:-lc_p} %{!profile:-lc}}}"
1142 #endif
1143
1144 #ifdef USE_GNULIBC_1
1145 #define STARTFILE_LINUX_SPEC "\
1146 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1147 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1148 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1149 #else
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 %{static:crtbeginT.o%s} \
1154 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
1155 #endif
1156
1157 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1158 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1159
1160 #define LINK_START_LINUX_SPEC ""
1161
1162 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1163   %{rdynamic:-export-dynamic} \
1164   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1165
1166 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
1167 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1168 #endif
1169
1170 #ifdef USE_GNULIBC_1
1171 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1172 %{!undef:                                                         \
1173   %{!ansi:                                                        \
1174     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1175     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1176 -Asystem=unix -Asystem=posix"
1177 #else
1178 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
1179 %{!undef:                                                         \
1180   %{!ansi:                                                        \
1181     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                   \
1182     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}               \
1183 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1184 #endif
1185
1186 /* GNU/Hurd support.  */
1187 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1188 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1189 %{profile:-lc_p} %{!profile:-lc}}}"
1190
1191 #define STARTFILE_GNU_SPEC "\
1192 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1193 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1194 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1195 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1196
1197 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1198 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1199
1200 #define LINK_START_GNU_SPEC ""
1201
1202 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1203   %{rdynamic:-export-dynamic} \
1204   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1205
1206 #define CPP_OS_GNU_SPEC "-D__unix__ -D__gnu_hurd__ -D__GNU__    \
1207 %{!undef:                                                       \
1208   %{!ansi: -Dunix -D__unix}}                                    \
1209 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1210
1211 /* NetBSD support.  */
1212 #define LIB_NETBSD_SPEC "\
1213 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1214
1215 #define STARTFILE_NETBSD_SPEC "\
1216 ncrti.o%s crt0.o%s \
1217 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1218
1219 #define ENDFILE_NETBSD_SPEC "\
1220 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1221 ncrtn.o%s"
1222
1223 #define LINK_START_NETBSD_SPEC "\
1224 "
1225
1226 #define LINK_OS_NETBSD_SPEC "\
1227 %{!shared: %{!static: \
1228   %{rdynamic:-export-dynamic} \
1229   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1230
1231 #define CPP_OS_NETBSD_SPEC "\
1232 -D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
1233
1234 /* VxWorks support.  */
1235 /* VxWorks does all the library stuff itself.  */
1236 #define LIB_VXWORKS_SPEC ""
1237
1238 /* VxWorks provides the functionality of crt0.o and friends itself.  */
1239
1240 #define STARTFILE_VXWORKS_SPEC ""
1241
1242 #define ENDFILE_VXWORKS_SPEC ""
1243
1244 /* Because it uses ld -r, vxworks has no start/end files, nor starting
1245    address.  */
1246
1247 #define LINK_START_VXWORKS_SPEC ""
1248
1249 #define LINK_OS_VXWORKS_SPEC "-r"
1250
1251 #define CPP_OS_VXWORKS_SPEC "\
1252 -DCPU_FAMILY=PPC \
1253 %{!mcpu*: \
1254   %{mpowerpc*: -DCPU=PPC603} \
1255   %{!mno-powerpc: -DCPU=PPC603}} \
1256 %{mcpu=powerpc: -DCPU=PPC603} \
1257 %{mcpu=401: -DCPU=PPC403} \
1258 %{mcpu=403: -DCPU=PPC403} \
1259 %{mcpu=405: -DCPU=PPC405} \
1260 %{mcpu=601: -DCPU=PPC601} \
1261 %{mcpu=602: -DCPU=PPC603} \
1262 %{mcpu=603: -DCPU=PPC603} \
1263 %{mcpu=603e: -DCPU=PPC603} \
1264 %{mcpu=ec603e: -DCPU=PPC603} \
1265 %{mcpu=604: -DCPU=PPC604} \
1266 %{mcpu=604e: -DCPU=PPC604} \
1267 %{mcpu=620: -DCPU=PPC604} \
1268 %{mcpu=740: -DCPU=PPC603} \
1269 %{mcpu=7450: -DCPU=PPC603} \
1270 %{mcpu=750: -DCPU=PPC603} \
1271 %{mcpu=801: -DCPU=PPC603} \
1272 %{mcpu=821: -DCPU=PPC603} \
1273 %{mcpu=823: -DCPU=PPC603} \
1274 %{mcpu=860: -DCPU=PPC603}"
1275
1276 /* WindISS support.  */
1277
1278 #define LIB_WINDISS_SPEC "--start-group -li -lcfp -lwindiss -lram -limpl -limpfp --end-group"
1279
1280 #define CPP_OS_WINDISS_SPEC "\
1281 -D__rtasim \
1282 -D__EABI__ \
1283 -D__ppc \
1284 %{!msoft-float: -D__hardfp} \
1285 "
1286
1287 #define STARTFILE_WINDISS_SPEC "crt0.o%s crtbegin.o%s"
1288
1289 #define ENDFILE_WINDISS_SPEC "crtend.o%s"
1290
1291 #define LINK_START_WINDISS_SPEC ""
1292
1293 #define LINK_OS_WINDISS_SPEC ""
1294
1295 /* Define any extra SPECS that the compiler needs to generate.  */
1296 /* Override rs6000.h definition.  */
1297 #undef  SUBTARGET_EXTRA_SPECS
1298 #define SUBTARGET_EXTRA_SPECS                                           \
1299   { "cpp_sysv",                 CPP_SYSV_SPEC },                        \
1300   { "crtsavres_default",        CRTSAVRES_DEFAULT_SPEC },              \
1301   { "lib_ads",                  LIB_ADS_SPEC },                         \
1302   { "lib_yellowknife",          LIB_YELLOWKNIFE_SPEC },                 \
1303   { "lib_mvme",                 LIB_MVME_SPEC },                        \
1304   { "lib_sim",                  LIB_SIM_SPEC },                         \
1305   { "lib_freebsd",              LIB_FREEBSD_SPEC },                     \
1306   { "lib_gnu",                  LIB_GNU_SPEC },                         \
1307   { "lib_linux",                LIB_LINUX_SPEC },                       \
1308   { "lib_netbsd",               LIB_NETBSD_SPEC },                      \
1309   { "lib_vxworks",              LIB_VXWORKS_SPEC },                     \
1310   { "lib_windiss",              LIB_WINDISS_SPEC },                     \
1311   { "lib_default",              LIB_DEFAULT_SPEC },                     \
1312   { "startfile_ads",            STARTFILE_ADS_SPEC },                   \
1313   { "startfile_yellowknife",    STARTFILE_YELLOWKNIFE_SPEC },           \
1314   { "startfile_mvme",           STARTFILE_MVME_SPEC },                  \
1315   { "startfile_sim",            STARTFILE_SIM_SPEC },                   \
1316   { "startfile_freebsd",        STARTFILE_FREEBSD_SPEC },               \
1317   { "startfile_gnu",            STARTFILE_GNU_SPEC },                   \
1318   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
1319   { "startfile_netbsd",         STARTFILE_NETBSD_SPEC },                \
1320   { "startfile_vxworks",        STARTFILE_VXWORKS_SPEC },               \
1321   { "startfile_windiss",        STARTFILE_WINDISS_SPEC },               \
1322   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
1323   { "endfile_ads",              ENDFILE_ADS_SPEC },                     \
1324   { "endfile_yellowknife",      ENDFILE_YELLOWKNIFE_SPEC },             \
1325   { "endfile_mvme",             ENDFILE_MVME_SPEC },                    \
1326   { "endfile_sim",              ENDFILE_SIM_SPEC },                     \
1327   { "endfile_freebsd",          ENDFILE_FREEBSD_SPEC },                 \
1328   { "endfile_gnu",              ENDFILE_GNU_SPEC },                     \
1329   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
1330   { "endfile_netbsd",           ENDFILE_NETBSD_SPEC },                  \
1331   { "endfile_vxworks",          ENDFILE_VXWORKS_SPEC },                 \
1332   { "endfile_windiss",          ENDFILE_WINDISS_SPEC },                 \
1333   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
1334   { "link_path",                LINK_PATH_SPEC },                       \
1335   { "link_shlib",               LINK_SHLIB_SPEC },                      \
1336   { "link_target",              LINK_TARGET_SPEC },                     \
1337   { "link_start",               LINK_START_SPEC },                      \
1338   { "link_start_ads",           LINK_START_ADS_SPEC },                  \
1339   { "link_start_yellowknife",   LINK_START_YELLOWKNIFE_SPEC },          \
1340   { "link_start_mvme",          LINK_START_MVME_SPEC },                 \
1341   { "link_start_sim",           LINK_START_SIM_SPEC },                  \
1342   { "link_start_freebsd",       LINK_START_FREEBSD_SPEC },              \
1343   { "link_start_gnu",           LINK_START_GNU_SPEC },                  \
1344   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
1345   { "link_start_netbsd",        LINK_START_NETBSD_SPEC },               \
1346   { "link_start_vxworks",       LINK_START_VXWORKS_SPEC },              \
1347   { "link_start_windiss",       LINK_START_WINDISS_SPEC },              \
1348   { "link_start_default",       LINK_START_DEFAULT_SPEC },              \
1349   { "link_os",                  LINK_OS_SPEC },                         \
1350   { "link_os_ads",              LINK_OS_ADS_SPEC },                     \
1351   { "link_os_yellowknife",      LINK_OS_YELLOWKNIFE_SPEC },             \
1352   { "link_os_mvme",             LINK_OS_MVME_SPEC },                    \
1353   { "link_os_sim",              LINK_OS_SIM_SPEC },                     \
1354   { "link_os_freebsd",          LINK_OS_FREEBSD_SPEC },                 \
1355   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
1356   { "link_os_gnu",              LINK_OS_GNU_SPEC },                     \
1357   { "link_os_netbsd",           LINK_OS_NETBSD_SPEC },                  \
1358   { "link_os_vxworks",          LINK_OS_VXWORKS_SPEC },                 \
1359   { "link_os_windiss",          LINK_OS_WINDISS_SPEC },                 \
1360   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
1361   { "cc1_endian_big",           CC1_ENDIAN_BIG_SPEC },                  \
1362   { "cc1_endian_little",        CC1_ENDIAN_LITTLE_SPEC },               \
1363   { "cc1_endian_default",       CC1_ENDIAN_DEFAULT_SPEC },              \
1364   { "cpp_os_ads",               CPP_OS_ADS_SPEC },                      \
1365   { "cpp_os_yellowknife",       CPP_OS_YELLOWKNIFE_SPEC },              \
1366   { "cpp_os_mvme",              CPP_OS_MVME_SPEC },                     \
1367   { "cpp_os_sim",               CPP_OS_SIM_SPEC },                      \
1368   { "cpp_os_freebsd",           CPP_OS_FREEBSD_SPEC },                  \
1369   { "cpp_os_gnu",               CPP_OS_GNU_SPEC },                      \
1370   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
1371   { "cpp_os_netbsd",            CPP_OS_NETBSD_SPEC },                   \
1372   { "cpp_os_vxworks",           CPP_OS_VXWORKS_SPEC },                  \
1373   { "cpp_os_windiss",           CPP_OS_WINDISS_SPEC },                  \
1374   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
1375
1376 /* Define this macro as a C expression for the initializer of an
1377    array of string to tell the driver program which options are
1378    defaults for this target and thus do not need to be handled
1379    specially when using `MULTILIB_OPTIONS'.
1380
1381    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1382    the target makefile fragment or if none of the options listed in
1383    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
1384
1385 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1386
1387 /* Define this macro if the code for function profiling should come
1388    before the function prologue.  Normally, the profiling code comes
1389    after.  */
1390 #define PROFILE_BEFORE_PROLOGUE 1
1391
1392 /* Function name to call to do profiling.  */
1393 #define RS6000_MCOUNT "_mcount"
1394
1395 /* Define this macro (to a value of 1) if you want to support the
1396    Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1397    pack(pop)'.  The pack(push,<n>) pragma specifies the maximum
1398    alignment (in bytes) of fields within a structure, in much the
1399    same way as the __aligned__' and __packed__' __attribute__'s
1400    do.  A pack value of zero resets the behaviour to the default.
1401    Successive invocations of this pragma cause the previous values to
1402    be stacked, so that invocations of #pragma pack(pop)' will return
1403    to the previous value.  */
1404
1405 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1406
1407 /* Define library calls for quad FP operations.  These are all part of the
1408    PowerPC 32bit ABI.  */
1409 #define ADDTF3_LIBCALL "_q_add"
1410 #define DIVTF3_LIBCALL "_q_div"
1411 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1412 #define EQTF2_LIBCALL "_q_feq"
1413 #define GETF2_LIBCALL "_q_fge"
1414 #define GTTF2_LIBCALL "_q_fgt"
1415 #define LETF2_LIBCALL "_q_fle"
1416 #define LTTF2_LIBCALL "_q_flt"
1417 #define NETF2_LIBCALL "_q_fne"
1418 #define FLOATSITF2_LIBCALL "_q_itoq"
1419 #define MULTF3_LIBCALL "_q_mul"
1420 #define NEGTF2_LIBCALL "_q_neg"
1421 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1422 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1423 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1424 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1425 #define SQRTTF_LIBCALL "_q_sqrt"
1426 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1427 #define SUBTF3_LIBCALL "_q_sub"
1428 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1429
1430 #define INIT_TARGET_OPTABS                                              \
1431   do {                                                                  \
1432     if (TARGET_HARD_FLOAT)                                              \
1433       {                                                                 \
1434         add_optab->handlers[(int) TFmode].libfunc                       \
1435           = init_one_libfunc (ADDTF3_LIBCALL);                          \
1436         sub_optab->handlers[(int) TFmode].libfunc                       \
1437           = init_one_libfunc (SUBTF3_LIBCALL);                          \
1438         neg_optab->handlers[(int) TFmode].libfunc                       \
1439           = init_one_libfunc (NEGTF2_LIBCALL);                          \
1440         smul_optab->handlers[(int) TFmode].libfunc                      \
1441           = init_one_libfunc (MULTF3_LIBCALL);                          \
1442         sdiv_optab->handlers[(int) TFmode].libfunc                      \
1443           = init_one_libfunc (DIVTF3_LIBCALL);                          \
1444         eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL);               \
1445         netf2_libfunc = init_one_libfunc (NETF2_LIBCALL);               \
1446         gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL);               \
1447         getf2_libfunc = init_one_libfunc (GETF2_LIBCALL);               \
1448         lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL);               \
1449         letf2_libfunc = init_one_libfunc (LETF2_LIBCALL);               \
1450         trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL);     \
1451         trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL);     \
1452         extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL);   \
1453         extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL);   \
1454         floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL);      \
1455         fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL);    \
1456         fixunstfsi_libfunc                                              \
1457           = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL);               \
1458         if (TARGET_PPC_GPOPT || TARGET_POWER2)                          \
1459           sqrt_optab->handlers[(int) TFmode].libfunc                    \
1460             = init_one_libfunc (SQRTTF_LIBCALL);                        \
1461       }                                                                 \
1462   } while (0)
1463
1464 /* Select a format to encode pointers in exception handling data.  CODE
1465    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
1466    true if the symbol may be affected by dynamic relocations.  */
1467 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                            \
1468   ((flag_pic || TARGET_RELOCATABLE)                                          \
1469    ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1470    : DW_EH_PE_absptr)
1471
1472 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1473
1474 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1475
1476 /* Generate entries in .fixup for relocatable addresses.  */
1477 #define RELOCATABLE_NEEDS_FIXUP