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
   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 /* Override rs6000.h definition.  */
  38 #undef  CPP_DEFAULT_SPEC
  39 #define CPP_DEFAULT_SPEC "-D_ARCH_PPC"
  40
  41 /* Small data support types.  */
  42 enum rs6000_sdata_type {
  43   SDATA_NONE,                   /* No small data support.  */
  44   SDATA_DATA,                   /* Just put data in .sbss/.sdata, don't use relocs.  */
  45   SDATA_SYSV,                   /* Use r13 to point to .sdata/.sbss.  */
  46   SDATA_EABI                    /* Use r13 like above, r2 points to .sdata2/.sbss2.  */
  47 };
  48
  49 extern enum rs6000_sdata_type rs6000_sdata;
  50
  51 /* V.4/eabi switches.  */
  52 #define MASK_NO_BITFIELD_TYPE   0x40000000      /* Set PCC_BITFIELD_TYPE_MATTERS to 0.  */
  53 #define MASK_STRICT_ALIGN       0x20000000      /* Set STRICT_ALIGNMENT to 1.  */
  54 #define MASK_RELOCATABLE        0x10000000      /* GOT pointers are PC relative.  */
  55 #define MASK_EABI               0x08000000      /* Adhere to eabi, not System V spec.  */
  56 #define MASK_LITTLE_ENDIAN      0x04000000      /* Target is little endian.  */
  57 #define MASK_REGNAMES           0x02000000      /* Use alternate register names.  */
  58 #define MASK_PROTOTYPE          0x01000000      /* Only prototyped fcns pass variable args.  */
  59 #define MASK_NO_BITFIELD_WORD   0x00800000      /* Bitfields cannot cross word boundaries */
  60
  61 #define TARGET_NO_BITFIELD_TYPE (target_flags & MASK_NO_BITFIELD_TYPE)
  62 #define TARGET_STRICT_ALIGN     (target_flags & MASK_STRICT_ALIGN)
  63 #define TARGET_RELOCATABLE      (target_flags & MASK_RELOCATABLE)
  64 #define TARGET_EABI             (target_flags & MASK_EABI)
  65 #define TARGET_LITTLE_ENDIAN    (target_flags & MASK_LITTLE_ENDIAN)
  66 #define TARGET_REGNAMES         (target_flags & MASK_REGNAMES)
  67 #define TARGET_PROTOTYPE        (target_flags & MASK_PROTOTYPE)
  68 #define TARGET_NO_BITFIELD_WORD (target_flags & MASK_NO_BITFIELD_WORD)
  69 #define TARGET_TOC              ((target_flags & MASK_64BIT)            \
  70                                  || ((target_flags & (MASK_RELOCATABLE  \
  71                                                       | MASK_MINIMAL_TOC)) \
  72                                      && flag_pic > 1)                   \
  73                                  || DEFAULT_ABI == ABI_AIX)
  74
  75 #define TARGET_BITFIELD_TYPE    (! TARGET_NO_BITFIELD_TYPE)
  76 #define TARGET_BIG_ENDIAN       (! TARGET_LITTLE_ENDIAN)
  77 #define TARGET_NO_PROTOTYPE     (! TARGET_PROTOTYPE)
  78 #define TARGET_NO_TOC           (! TARGET_TOC)
  79 #define TARGET_NO_EABI          (! TARGET_EABI)
  80
  81 /* Strings provided by SUBTARGET_OPTIONS */
  82 extern const char *rs6000_abi_name;
  83 extern const char *rs6000_sdata_name;
  84
  85 /* Override rs6000.h definition.  */
  86 #undef  SUBTARGET_OPTIONS
  87 #define SUBTARGET_OPTIONS                                               \
  88   { "call-",  &rs6000_abi_name, N_("Select ABI calling convention.") }, \
  89   { "sdata=", &rs6000_sdata_name, N_("Select method for sdata handling.") }
  90
  91 /* Max # of bytes for variables to automatically be put into the .sdata
  92    or .sdata2 sections.  */
  93 extern int g_switch_value;              /* Value of the -G xx switch.  */
  94 extern int g_switch_set;                /* Whether -G xx was passed.  */
  95
  96 #define SDATA_DEFAULT_SIZE 8
  97
  98 /* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be just
  99    the same as -mminimal-toc.  */
 100 /* Override rs6000.h definition.  */
 101 #undef  SUBTARGET_SWITCHES
 102 #define SUBTARGET_SWITCHES                                              \
 103   { "bit-align",        -MASK_NO_BITFIELD_TYPE,                         \
 104     N_("Align to the base type of the bitfield.") },                    \
 105   { "no-bit-align",      MASK_NO_BITFIELD_TYPE,                         \
 106     N_("Don't align to the base type of the bitfield.") },              \
 107   { "strict-align",      MASK_STRICT_ALIGN,                             \
 108     N_("Don't assume that unaligned accesses are handled by the system") }, \
 109   { "no-strict-align",  -MASK_STRICT_ALIGN,                             \
 110     N_("Assume that unaligned accesses are handled by the system") },   \
 111   { "relocatable",       MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
 112     N_("Produce code relocatable at runtime.") },                       \
 113   { "no-relocatable",   -MASK_RELOCATABLE,                              \
 114     N_("Don't produce code relocatable at runtime.") },                 \
 115   { "relocatable-lib",   MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC, \
 116     N_("Produce code relocatable at runtime.") },                       \
 117   { "no-relocatable-lib", -MASK_RELOCATABLE,                            \
 118     N_("Don't produce code relocatable at runtime.") },                 \
 119   { "little-endian",     MASK_LITTLE_ENDIAN,                            \
 120     N_("Produce little endian code.") },                                \
 121   { "little",            MASK_LITTLE_ENDIAN,                            \
 122     N_("Produce little endian code.") },                                \
 123   { "big-endian",       -MASK_LITTLE_ENDIAN,                            \
 124     N_("Produce big endian code.") },                                   \
 125   { "big",              -MASK_LITTLE_ENDIAN,                            \
 126     N_("Produce big endian code.") },                                   \
 127   { "no-toc",            0, N_("no description yet") },                 \
 128   { "toc",               MASK_MINIMAL_TOC, N_("no description yet") },  \
 129   { "full-toc",          MASK_MINIMAL_TOC, N_("no description yet") },  \
 130   { "prototype",         MASK_PROTOTYPE, N_("no description yet") },    \
 131   { "no-prototype",     -MASK_PROTOTYPE, N_("no description yet") },    \
 132   { "no-traceback",      0, N_("no description yet") },                 \
 133   { "eabi",              MASK_EABI, N_("Use EABI.") },                  \
 134   { "no-eabi",          -MASK_EABI, N_("Don't use EABI.") },            \
 135   { "bit-word",         -MASK_NO_BITFIELD_WORD, "" },                   \
 136   { "no-bit-word",       MASK_NO_BITFIELD_WORD,                         \
 137     N_("Do not allow bitfields to cross word boundaries") },            \
 138   { "regnames",           MASK_REGNAMES,                                \
 139     N_("Use alternate register names.") },                              \
 140   { "no-regnames",       -MASK_REGNAMES,                                \
 141     N_("Don't use alternate register names.") },                        \
 142   { "sdata",             0, N_("no description yet") },                 \
 143   { "no-sdata",          0, N_("no description yet") },                 \
 144   { "sim",               0,                                             \
 145     N_("Link with libsim.a, libc.a and sim-crt0.o.") },                 \
 146   { "ads",               0,                                             \
 147     N_("Link with libads.a, libc.a and crt0.o.") },                     \
 148   { "yellowknife",       0,                                             \
 149     N_("Link with libyk.a, libc.a and crt0.o.") },                      \
 150   { "mvme",              0,                                             \
 151     N_("Link with libmvme.a, libc.a and crt0.o.") },                    \
 152   { "emb",               0,                                             \
 153     N_("Set the PPC_EMB bit in the ELF flags header") },                \
 154   { "vxworks",           0, N_("no description yet") },                 \
 155   { "shlib",             0, N_("no description yet") },                 \
 156   EXTRA_SUBTARGET_SWITCHES                                              \
 157   { "newlib",            0, N_("no description yet") },
 158
 159 /* This is meant to be redefined in the host dependent files.  */
 160 #define EXTRA_SUBTARGET_SWITCHES
 161
 162 /* Sometimes certain combinations of command options do not make sense
 163    on a particular target machine.  You can define a macro
 164    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
 165    defined, is executed once just after all the command options have
 166    been parsed.
 167
 168    The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
 169    get control.  */
 170
 171 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
 172 do {                                                                    \
 173   if (!g_switch_set)                                                    \
 174     g_switch_value = SDATA_DEFAULT_SIZE;                                \
 175                                                                         \
 176   if (!strcmp (rs6000_abi_name, "sysv"))                                \
 177     rs6000_current_abi = ABI_V4;                                        \
 178   else if (!strcmp (rs6000_abi_name, "sysv-noeabi"))                    \
 179     {                                                                   \
 180       rs6000_current_abi = ABI_V4;                                      \
 181       target_flags &= ~ MASK_EABI;                                      \
 182     }                                                                   \
 183   else if (!strcmp (rs6000_abi_name, "sysv-eabi")                       \
 184            || !strcmp (rs6000_abi_name, "eabi"))                        \
 185     {                                                                   \
 186       rs6000_current_abi = ABI_V4;                                      \
 187       target_flags |= MASK_EABI;                                        \
 188     }                                                                   \
 189   else if (!strcmp (rs6000_abi_name, "aix"))                            \
 190     {                                                                   \
 191       rs6000_current_abi = ABI_AIX_NODESC;                              \
 192       target_flags |= MASK_EABI;                                        \
 193     }                                                                   \
 194   else if (!strcmp (rs6000_abi_name, "aixdesc"))                        \
 195     rs6000_current_abi = ABI_AIX;                                       \
 196   else if (!strcmp (rs6000_abi_name, "freebsd"))                        \
 197     rs6000_current_abi = ABI_V4;                                        \
 198   else if (!strcmp (rs6000_abi_name, "linux"))                          \
 199     rs6000_current_abi = ABI_V4;                                        \
 200   else if (!strcmp (rs6000_abi_name, "netbsd"))                         \
 201     rs6000_current_abi = ABI_V4;                                        \
 202   else if (!strcmp (rs6000_abi_name, "i960-old"))                       \
 203     {                                                                   \
 204       rs6000_current_abi = ABI_V4;                                      \
 205       target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI                   \
 206                        | MASK_NO_BITFIELD_WORD);                        \
 207       target_flags &= ~MASK_STRICT_ALIGN;                               \
 208     }                                                                   \
 209   else                                                                  \
 210     {                                                                   \
 211       rs6000_current_abi = ABI_V4;                                      \
 212       error ("Bad value for -mcall-%s", rs6000_abi_name);               \
 213     }                                                                   \
 214                                                                         \
 215   if (rs6000_sdata_name)                                                \
 216     {                                                                   \
 217       if (!strcmp (rs6000_sdata_name, "none"))                          \
 218         rs6000_sdata = SDATA_NONE;                                      \
 219       else if (!strcmp (rs6000_sdata_name, "data"))                     \
 220         rs6000_sdata = SDATA_DATA;                                      \
 221       else if (!strcmp (rs6000_sdata_name, "default"))                  \
 222         rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV;         \
 223       else if (!strcmp (rs6000_sdata_name, "sysv"))                     \
 224         rs6000_sdata = SDATA_SYSV;                                      \
 225       else if (!strcmp (rs6000_sdata_name, "eabi"))                     \
 226         rs6000_sdata = SDATA_EABI;                                      \
 227       else                                                              \
 228         error ("Bad value for -msdata=%s", rs6000_sdata_name);          \
 229     }                                                                   \
 230   else if (DEFAULT_ABI == ABI_V4)                                       \
 231     {                                                                   \
 232       rs6000_sdata = SDATA_DATA;                                        \
 233       rs6000_sdata_name = "data";                                       \
 234     }                                                                   \
 235   else                                                                  \
 236     {                                                                   \
 237       rs6000_sdata = SDATA_NONE;                                        \
 238       rs6000_sdata_name = "none";                                       \
 239     }                                                                   \
 240                                                                         \
 241   if (TARGET_RELOCATABLE &&                                             \
 242       (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))       \
 243     {                                                                   \
 244       rs6000_sdata = SDATA_DATA;                                        \
 245       error ("-mrelocatable and -msdata=%s are incompatible.",          \
 246              rs6000_sdata_name);                                        \
 247     }                                                                   \
 248                                                                         \
 249   else if (flag_pic &&                                                  \
 250            (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))  \
 251     {                                                                   \
 252       rs6000_sdata = SDATA_DATA;                                        \
 253       error ("-f%s and -msdata=%s are incompatible.",                   \
 254              (flag_pic > 1) ? "PIC" : "pic",                            \
 255              rs6000_sdata_name);                                        \
 256     }                                                                   \
 257                                                                         \
 258   if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4)              \
 259     {                                                                   \
 260       rs6000_sdata = SDATA_NONE;                                        \
 261       error ("-msdata=%s and -mcall-%s are incompatible.",              \
 262              rs6000_sdata_name, rs6000_abi_name);                       \
 263     }                                                                   \
 264                                                                         \
 265   if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC)                        \
 266     {                                                                   \
 267       target_flags |= MASK_MINIMAL_TOC;                                 \
 268       error ("-mrelocatable and -mno-minimal-toc are incompatible.");   \
 269     }                                                                   \
 270                                                                         \
 271   if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX)              \
 272     {                                                                   \
 273       target_flags &= ~MASK_RELOCATABLE;                                \
 274       error ("-mrelocatable and -mcall-%s are incompatible.",           \
 275              rs6000_abi_name);                                          \
 276     }                                                                   \
 277                                                                         \
 278   if (flag_pic > 1 && rs6000_current_abi == ABI_AIX)                    \
 279     {                                                                   \
 280       flag_pic = 0;                                                     \
 281       error ("-fPIC and -mcall-%s are incompatible.",                   \
 282              rs6000_abi_name);                                          \
 283     }                                                                   \
 284                                                                         \
 285   if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN)            \
 286     {                                                                   \
 287       target_flags &= ~MASK_LITTLE_ENDIAN;                              \
 288       error ("-mcall-aixdesc must be big endian");                      \
 289     }                                                                   \
 290                                                                         \
 291   /* Treat -fPIC the same as -mrelocatable.  */                         \
 292   if (flag_pic > 1)                                                     \
 293     target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
 294                                                                         \
 295   else if (TARGET_RELOCATABLE)                                          \
 296     flag_pic = 2;                                                       \
 297                                                                         \
 298 } while (0)
 299
 300
 301 /* Override rs6000.h definition.  */
 302 #undef  TARGET_DEFAULT
 303 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
 304
 305 /* Override rs6000.h definition.  */
 306 #undef  PROCESSOR_DEFAULT
 307 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
 308
 309 #define FIXED_R2 1
 310 /* System V.4 uses register 13 as a pointer to the small data area,
 311    so it is not available to the normal user.  */
 312 #define FIXED_R13 1
 313
 314 /* Size of the V.4 varargs area if needed.  */
 315 /* Override rs6000.h definition.  */
 316 #undef  RS6000_VARARGS_AREA
 317 #define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
 318
 319 /* Override default big endianism definitions in rs6000.h.  */
 320 #undef  BYTES_BIG_ENDIAN
 321 #undef  WORDS_BIG_ENDIAN
 322 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
 323 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
 324
 325 /* Define this to set the endianness to use in libgcc2.c, which can
 326    not depend on target_flags.  */
 327 #if !defined(_LITTLE_ENDIAN) && !defined(__sun__)
 328 #define LIBGCC2_WORDS_BIG_ENDIAN 1
 329 #else
 330 #define LIBGCC2_WORDS_BIG_ENDIAN 0
 331 #endif
 332
 333 /* Define cutoff for using external functions to save floating point.
 334    Currently on V.4, always use inline stores.  */
 335 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
 336
 337 /* Put jump tables in read-only memory, rather than in .text.  */
 338 #define JUMP_TABLES_IN_TEXT_SECTION 0
 339
 340 /* Prefix and suffix to use to saving floating point.  */
 341 #define SAVE_FP_PREFIX "_savefpr_"
 342 #define SAVE_FP_SUFFIX "_l"
 343
 344 /* Prefix and suffix to use to restoring floating point.  */
 345 #define RESTORE_FP_PREFIX "_restfpr_"
 346 #define RESTORE_FP_SUFFIX "_l"
 347
 348 /* Type used for ptrdiff_t, as a string used in a declaration.  */
 349 #define PTRDIFF_TYPE "int"
 350
 351 /* Type used for wchar_t, as a string used in a declaration.  */
 352 /* Override svr4.h definition.  */
 353 #undef  WCHAR_TYPE
 354 #define WCHAR_TYPE "long int"
 355
 356 /* Width of wchar_t in bits.  */
 357 /* Override svr4.h definition.  */
 358 #undef  WCHAR_TYPE_SIZE
 359 #define WCHAR_TYPE_SIZE 32
 360
 361 /* Make int foo : 8 not cause structures to be aligned to an int boundary.  */
 362 /* Override elfos.h definition.  */
 363 #undef  PCC_BITFIELD_TYPE_MATTERS
 364 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
 365
 366 #undef  BITFIELD_NBYTES_LIMITED
 367 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
 368
 369 /* Define this macro to be the value 1 if instructions will fail to
 370    work if given data not on the nominal alignment.  If instructions
 371    will merely go slower in that case, define this macro as 0.  */
 372 #undef  STRICT_ALIGNMENT
 373 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
 374
 375 /* Alignment in bits of the stack boundary.  Note, in order to allow building
 376    one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
 377    versions, just use 64 as the stack boundary.  */
 378 #undef  STACK_BOUNDARY
 379 #define STACK_BOUNDARY  (TARGET_ALTIVEC_ABI ? 128 : 64)
 380
 381 /* Real stack boundary as mandated by the appropriate ABI.  */
 382 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
 383
 384 /* No data type wants to be aligned rounder than this.  */
 385 #undef  BIGGEST_ALIGNMENT
 386 #define BIGGEST_ALIGNMENT (TARGET_EABI ? 64 : 128)
 387
 388 /* An expression for the alignment of a structure field FIELD if the
 389    alignment computed in the usual way is COMPUTED.  */
 390 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED)                                   \
 391         ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE)     \
 392          ? 128 : COMPUTED)
 393
 394 /* Define this macro as an expression for the alignment of a type
 395    (given by TYPE as a tree node) if the alignment computed in the
 396    usual way is COMPUTED and the alignment explicitly specified was
 397    SPECIFIED.  */
 398 #define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED)                     \
 399         ((TARGET_ALTIVEC  && TREE_CODE (TYPE) == VECTOR_TYPE)           \
 400          ? 128 : MAX (COMPUTED, SPECIFIED))
 401
 402 #undef  BIGGEST_FIELD_ALIGNMENT
 403 #undef  ADJUST_FIELD_ALIGN
 404
 405 /* Use ELF style section commands.  */
 406
 407 #define TEXT_SECTION_ASM_OP     "\t.section\t\".text\""
 408
 409 #define DATA_SECTION_ASM_OP     "\t.section\t\".data\""
 410
 411 #define BSS_SECTION_ASM_OP      "\t.section\t\".bss\""
 412
 413 /* Override elfos.h definition.  */
 414 #undef  INIT_SECTION_ASM_OP
 415 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
 416
 417 /* Override elfos.h definition.  */
 418 #undef  FINI_SECTION_ASM_OP
 419 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
 420
 421 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
 422
 423 /* Put PC relative got entries in .got2.  */
 424 #define MINIMAL_TOC_SECTION_ASM_OP \
 425   ((TARGET_RELOCATABLE || flag_pic) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
 426
 427 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
 428 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
 429 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
 430
 431 /* Besides the usual ELF sections, we need a toc section.  */
 432 /* Override elfos.h definition.  */
 433 #undef  EXTRA_SECTIONS
 434 #define EXTRA_SECTIONS in_const, in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
 435
 436 /* Override elfos.h definition.  */
 437 #undef  EXTRA_SECTION_FUNCTIONS
 438 #define EXTRA_SECTION_FUNCTIONS                                         \
 439   CONST_SECTION_FUNCTION                                                \
 440   TOC_SECTION_FUNCTION                                                  \
 441   SDATA_SECTION_FUNCTION                                                \
 442   SDATA2_SECTION_FUNCTION                                               \
 443   SBSS_SECTION_FUNCTION                                                 \
 444   INIT_SECTION_FUNCTION                                                 \
 445   FINI_SECTION_FUNCTION
 446
 447 #define TOC_SECTION_FUNCTION                                            \
 448 void                                                                    \
 449 toc_section ()                                                          \
 450 {                                                                       \
 451   if (in_section != in_toc)                                             \
 452     {                                                                   \
 453       in_section = in_toc;                                              \
 454       if (DEFAULT_ABI == ABI_AIX                                        \
 455           && TARGET_MINIMAL_TOC                                         \
 456           && !TARGET_RELOCATABLE)                                       \
 457         {                                                               \
 458           if (! toc_initialized)                                        \
 459             {                                                           \
 460               toc_initialized = 1;                                      \
 461               fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);       \
 462               ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LCTOC", 0);     \
 463               fprintf (asm_out_file, "\t.tc ");                         \
 464               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
 465               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 466               fprintf (asm_out_file, "\n");                             \
 467                                                                         \
 468               fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 469               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 470               fprintf (asm_out_file, " = .+32768\n");                   \
 471             }                                                           \
 472           else                                                          \
 473             fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 474         }                                                               \
 475       else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE)           \
 476         fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);             \
 477       else                                                              \
 478         {                                                               \
 479           fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);   \
 480           if (! toc_initialized)                                        \
 481             {                                                           \
 482               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 483               fprintf (asm_out_file, " = .+32768\n");                   \
 484               toc_initialized = 1;                                      \
 485             }                                                           \
 486         }                                                               \
 487     }                                                                   \
 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 /* A C statement or statements to switch to the appropriate section
 546    for output of RTX in mode MODE.  You can assume that RTX is some
 547    kind of constant in RTL.  The argument MODE is redundant except in
 548    the case of a `const_int' rtx.  Select the section by calling
 549    `text_section' or one of the alternatives for other sections.
 550
 551    Do not define this macro if you put all constants in the read-only
 552    data section.  */
 553
 554 /* Override elfos.h definition.  */
 555 #undef  SELECT_RTX_SECTION
 556 #define SELECT_RTX_SECTION(MODE, X, ALIGN) rs6000_select_rtx_section (MODE, X)
 557
 558 /* A C statement or statements to switch to the appropriate
 559    section for output of DECL.  DECL is either a `VAR_DECL' node
 560    or a constant of some sort.  RELOC indicates whether forming
 561    the initial value of DECL requires link-time relocations.  */
 562
 563 /* Override elfos.h definition.  */
 564 #undef  SELECT_SECTION
 565 #define SELECT_SECTION(DECL, RELOC, ALIGN) rs6000_select_section (DECL, RELOC)
 566
 567 /* A C statement to build up a unique section name, expressed as a
 568    STRING_CST node, and assign it to DECL_SECTION_NAME (decl).
 569    RELOC indicates whether the initial value of EXP requires
 570    link-time relocations.  If you do not define this macro, GCC will use
 571    the symbol name prefixed by `.' as the section name.  Note - this
 572    macro can now be called for uninitialized data items as well as
 573    initialised data and functions.  */
 574
 575 /* Override elfos.h definition.  */
 576 #undef  UNIQUE_SECTION
 577 #define UNIQUE_SECTION(DECL, RELOC) rs6000_unique_section (DECL, RELOC)
 578
 579 /* Return non-zero if this entry is to be written into the constant pool
 580    in a special way.  We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
 581    containing one of them.  If -mfp-in-toc (the default), we also do
 582    this for floating-point constants.  We actually can only do this
 583    if the FP formats of the target and host machines are the same, but
 584    we can't check that since not every file that uses
 585    GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
 586
 587    Unlike AIX, we don't key off of -mminimal-toc, but instead do not
 588    allow floating point constants in the TOC if -mrelocatable.  */
 589
 590 #undef  ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
 591 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE)                        \
 592   (TARGET_TOC                                                           \
 593    && (GET_CODE (X) == SYMBOL_REF                                       \
 594        || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS      \
 595            && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF)           \
 596        || GET_CODE (X) == LABEL_REF                                     \
 597        || (GET_CODE (X) == CONST_INT                                    \
 598            && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode))      \
 599        || (!TARGET_NO_FP_IN_TOC                                         \
 600            && !TARGET_RELOCATABLE                                       \
 601            && GET_CODE (X) == CONST_DOUBLE                              \
 602            && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT               \
 603            && BITS_PER_WORD == HOST_BITS_PER_INT)))
 604
 605 /* These macros generate the special .type and .size directives which
 606    are used to set the corresponding fields of the linker symbol table
 607    entries in an ELF object file under SVR4.  These macros also output
 608    the starting labels for the relevant functions/objects.  */
 609
 610 /* Write the extra assembler code needed to declare a function properly.
 611    Some svr4 assemblers need to also have something extra said about the
 612    function's return value.  We allow for that here.  */
 613
 614 extern int rs6000_pic_labelno;
 615
 616 /* Override elfos.h definition.  */
 617 #undef  ASM_DECLARE_FUNCTION_NAME
 618 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 619   do {                                                                  \
 620     const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long";    \
 621                                                                         \
 622     if (TARGET_RELOCATABLE && (get_pool_size () != 0 || profile_flag)   \
 623         && uses_TOC())                                                  \
 624       {                                                                 \
 625         char buf[256];                                                  \
 626                                                                         \
 627         ASM_OUTPUT_INTERNAL_LABEL (FILE, "LCL", rs6000_pic_labelno);    \
 628                                                                         \
 629         ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1);                  \
 630         fprintf (FILE, "\t%s ", init_ptr);                              \
 631         assemble_name (FILE, buf);                                      \
 632         putc ('-', FILE);                                               \
 633         ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno);   \
 634         assemble_name (FILE, buf);                                      \
 635         putc ('\n', FILE);                                              \
 636       }                                                                 \
 637                                                                         \
 638     fprintf (FILE, "%s", TYPE_ASM_OP);                                  \
 639     assemble_name (FILE, NAME);                                         \
 640     putc (',', FILE);                                                   \
 641     fprintf (FILE, TYPE_OPERAND_FMT, "function");                       \
 642     putc ('\n', FILE);                                                  \
 643     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
 644                                                                         \
 645     if (DEFAULT_ABI == ABI_AIX)                                         \
 646       {                                                                 \
 647         const char *desc_name, *orig_name;                              \
 648                                                                         \
 649         STRIP_NAME_ENCODING (orig_name, NAME);                          \
 650         desc_name = orig_name;                                          \
 651         while (*desc_name == '.')                                       \
 652           desc_name++;                                                  \
 653                                                                         \
 654         if (TREE_PUBLIC (DECL))                                         \
 655           fprintf (FILE, "\t.globl %s\n", desc_name);                   \
 656                                                                         \
 657         fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);             \
 658         fprintf (FILE, "%s:\n", desc_name);                             \
 659         fprintf (FILE, "\t%s %s\n", init_ptr, orig_name);               \
 660         fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr);       \
 661         if (DEFAULT_ABI == ABI_AIX)                                     \
 662           fprintf (FILE, "\t%s 0\n", init_ptr);                         \
 663         fprintf (FILE, "\t.previous\n");                                \
 664       }                                                                 \
 665     ASM_OUTPUT_LABEL (FILE, NAME);                                      \
 666   } while (0)
 667
 668 /* A C compound statement that outputs the assembler code for a thunk function,
 669     used to implement C++ virtual function calls with multiple inheritance.  The
 670     thunk acts as a wrapper around a virtual function, adjusting the implicit
 671     object parameter before handing control off to the real function.
 672
 673     First, emit code to add the integer DELTA to the location that contains the
 674     incoming first argument.  Assume that this argument contains a pointer, and
 675     is the one used to pass the this' pointer in C++.  This is the incoming
 676     argument *before* the function prologue, e.g. %o0' on a sparc.  The
 677     addition must preserve the values of all other incoming arguments.
 678
 679     After the addition, emit code to jump to FUNCTION, which is a
 680     FUNCTION_DECL'.  This is a direct pure jump, not a call, and does not touch
 681     the return address.  Hence returning from FUNCTION will return to whoever
 682     called the current thunk'.
 683
 684     The effect must be as if FUNCTION had been called directly with the adjusted
 685     first argument.  This macro is responsible for emitting all of the code for
 686     a thunk function; FUNCTION_PROLOGUE' and FUNCTION_EPILOGUE' are not
 687     invoked.
 688
 689     The THUNK_FNDECL is redundant.  (DELTA and FUNCTION have already been
 690     extracted from it.)  It might possibly be useful on some targets, but
 691     probably not.
 692
 693     If you do not define this macro, the target-independent code in the C++
 694     frontend will generate a less efficient heavyweight thunk that calls
 695     FUNCTION instead of jumping to it.  The generic approach does not support
 696     varargs.  */
 697
 698 #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
 699   output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
 700
 701 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
 702    flag.  The LOCAL_LABEL_PREFIX variable is used by dbxelf.h.  */
 703
 704 #define LOCAL_LABEL_PREFIX "."
 705 #define USER_LABEL_PREFIX ""
 706
 707 /* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL.  */
 708
 709 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)   \
 710   asm_fprintf (FILE, "%L%s", PREFIX)
 711
 712 #define ASM_OUTPUT_LABEL(FILE,NAME)     \
 713   (assemble_name (FILE, NAME), fputs (":\n", FILE))
 714
 715 /* This is how to output a command to make the user-level label named NAME
 716    defined for reference from other files.  */
 717
 718 #define ASM_GLOBALIZE_LABEL(FILE,NAME)  \
 719   do { fputs ("\t.globl ", FILE);       \
 720        assemble_name (FILE, NAME); putc ('\n', FILE);} while (0)
 721
 722 /* This says how to output assembler code to declare an
 723    uninitialized internal linkage data object.  Under SVR4,
 724    the linker seems to want the alignment of data objects
 725    to depend on their types.  We do exactly that here.  */
 726
 727 #define LOCAL_ASM_OP    "\t.local\t"
 728
 729 #define LCOMM_ASM_OP    "\t.lcomm\t"
 730
 731 /* Override elfos.h definition.  */
 732 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 733 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 734 do {                                                                    \
 735   if (rs6000_sdata != SDATA_NONE && (SIZE) > 0                          \
 736       && (SIZE) <= g_switch_value)                                      \
 737     {                                                                   \
 738       sbss_section ();                                                  \
 739       ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));      \
 740       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 741       ASM_OUTPUT_SKIP (FILE, SIZE);                                     \
 742       if (!flag_inhibit_size_directive && (SIZE) > 0)                   \
 743         {                                                               \
 744           fprintf (FILE, "%s", SIZE_ASM_OP);                            \
 745           assemble_name (FILE, NAME);                                   \
 746           fprintf (FILE, ",%d\n",  SIZE);                               \
 747         }                                                               \
 748     }                                                                   \
 749   else                                                                  \
 750     {                                                                   \
 751       fprintf (FILE, "%s", LCOMM_ASM_OP);                               \
 752       assemble_name ((FILE), (NAME));                                   \
 753       fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT);    \
 754     }                                                                   \
 755 } while (0)
 756
 757 /* Describe how to emit uninitialized external linkage items.  */
 758 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 759 do {                                                                    \
 760   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
 761   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 762 } while (0)
 763
 764 /* Switch  Recognition by gcc.c.  Add -G xx support.  */
 765
 766 /* Override svr4.h definition.  */
 767 #undef  SWITCH_TAKES_ARG
 768 #define SWITCH_TAKES_ARG(CHAR)                                          \
 769   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o'                      \
 770    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u'                   \
 771    || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x'                   \
 772    || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V'                   \
 773    || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
 774
 775 /* Output .file.  */
 776 /* Override elfos.h definition.  */
 777 #undef  ASM_FILE_START
 778 #define ASM_FILE_START(FILE)                                            \
 779 do {                                                                    \
 780   output_file_directive ((FILE), main_input_filename);                  \
 781   rs6000_file_start (FILE, TARGET_CPU_DEFAULT);                         \
 782 } while (0)
 783
 784
 785 extern int fixuplabelno;
 786
 787 /* Handle constructors specially for -mrelocatable.  */
 788 #define TARGET_ASM_CONSTRUCTOR  rs6000_elf_asm_out_constructor
 789 #define TARGET_ASM_DESTRUCTOR   rs6000_elf_asm_out_destructor
 790
 791 /* This is how to output an assembler line defining an `int' constant.
 792    For -mrelocatable, we mark all addresses that need to be fixed up
 793    in the .fixup section.  */
 794 /* Override rs6000.h definition.  */
 795 #undef  ASM_OUTPUT_INT
 796 #define ASM_OUTPUT_INT(FILE,VALUE)                                      \
 797 do {                                                                    \
 798   static int recurse = 0;                                               \
 799   if (TARGET_RELOCATABLE                                                \
 800       && in_section != in_toc                                           \
 801       && in_section != in_text                                          \
 802       && !recurse                                                       \
 803       && GET_CODE (VALUE) != CONST_INT                                  \
 804       && GET_CODE (VALUE) != CONST_DOUBLE                               \
 805       && CONSTANT_P (VALUE))                                            \
 806     {                                                                   \
 807       char buf[256];                                                    \
 808                                                                         \
 809       recurse = 1;                                                      \
 810       ASM_GENERATE_INTERNAL_LABEL (buf, "LCP", fixuplabelno);           \
 811       fixuplabelno++;                                                   \
 812       ASM_OUTPUT_LABEL (FILE, buf);                                     \
 813       fprintf (FILE, "\t.long (");                                      \
 814       output_addr_const (FILE, (VALUE));                                \
 815       fprintf (FILE, ")@fixup\n");                                      \
 816       fprintf (FILE, "\t.section\t\".fixup\",\"aw\"\n");                \
 817       ASM_OUTPUT_ALIGN (FILE, 2);                                       \
 818       fprintf (FILE, "\t.long\t");                                      \
 819       assemble_name (FILE, buf);                                        \
 820       fprintf (FILE, "\n\t.previous\n");                                \
 821       recurse = 0;                                                      \
 822     }                                                                   \
 823   /* Remove initial .'s to turn a -mcall-aixdesc function               \
 824      address into the address of the descriptor, not the function       \
 825      itself.  */                                                        \
 826   else if (GET_CODE (VALUE) == SYMBOL_REF                               \
 827            && XSTR (VALUE, 0)[0] == '.'                                 \
 828            && DEFAULT_ABI == ABI_AIX)                                   \
 829     {                                                                   \
 830       const char *name = XSTR (VALUE, 0);                               \
 831       while (*name == '.')                                              \
 832         name++;                                                         \
 833                                                                         \
 834       fprintf (FILE, "\t.long %s\n", name);                             \
 835     }                                                                   \
 836   else                                                                  \
 837     {                                                                   \
 838       fprintf (FILE, "\t.long ");                                       \
 839       output_addr_const (FILE, (VALUE));                                \
 840       fprintf (FILE, "\n");                                             \
 841     }                                                                   \
 842 } while (0)
 843
 844 /* This is the end of what might become sysv4.h.  */
 845
 846 /* Use DWARF 2 debugging information by default.  */
 847 #undef  PREFERRED_DEBUGGING_TYPE
 848 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 849
 850 /* Historically we have also supported stabs debugging.  */
 851 #define DBX_DEBUGGING_INFO
 852
 853 /* If we are referencing a function that is static or is known to be
 854    in this file, make the SYMBOL_REF special.  We can use this to indicate
 855    that we can branch to this function without emitting a no-op after the
 856    call.  For real AIX calling sequences, we also replace the
 857    function name with the real name (1 or 2 leading .'s), rather than
 858    the function descriptor name.  This saves a lot of overriding code
 859    to read the prefixes.  */
 860
 861 #undef  ENCODE_SECTION_INFO
 862 #define ENCODE_SECTION_INFO(DECL) rs6000_encode_section_info (DECL)
 863
 864 /* The ELF version doesn't encode [DS] or whatever at the end of symbols.  */
 865
 866 #define RS6000_OUTPUT_BASENAME(FILE, NAME)      \
 867     assemble_name (FILE, NAME)
 868
 869 /* This macro gets just the user-specified name
 870    out of the string in a SYMBOL_REF.  Discard
 871    a leading * or @.  */
 872 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)                            \
 873 do {                                                                    \
 874   const char *_name = SYMBOL_NAME;                                      \
 875   while (*_name == '*' || *_name == '@')                                \
 876     _name++;                                                            \
 877   (VAR) = _name;                                                        \
 878 } while (0)
 879
 880 /* This is how to output a reference to a user-level label named NAME.
 881    `assemble_name' uses this.  */
 882
 883 /* Override elfos.h definition.  */
 884 #undef  ASM_OUTPUT_LABELREF
 885 #define ASM_OUTPUT_LABELREF(FILE,NAME)          \
 886 do {                                            \
 887   const char *_name = NAME;                     \
 888   if (*_name == '@')                            \
 889     _name++;                                    \
 890                                                 \
 891   if (*_name == '*')                            \
 892     fprintf (FILE, "%s", _name + 1);            \
 893   else                                          \
 894     asm_fprintf (FILE, "%U%s", _name);          \
 895 } while (0)
 896
 897 /* But, to make this work, we have to output the stabs for the function
 898    name *first*...  */
 899
 900 #define DBX_FUNCTION_FIRST
 901
 902 /* This is the end of what might become sysv4dbx.h.  */
 903
 904 #ifndef TARGET_VERSION
 905 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
 906 #endif
 907 \f
 908 #ifndef CPP_PREDEFINES
 909 #define CPP_PREDEFINES \
 910   "-DPPC -Dunix -D__svr4__ -Asystem=unix -Asystem=svr4 -Acpu=powerpc -Amachine=powerpc"
 911 #endif
 912
 913 /* Pass various options to the assembler.  */
 914 /* Override svr4.h definition.  */
 915 #undef  ASM_SPEC
 916 #define ASM_SPEC "%(asm_cpu) \
 917 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
 918 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
 919 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
 920 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
 921 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
 922 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 923     %{mcall-freebsd: -mbig} \
 924     %{mcall-i960-old: -mlittle} \
 925     %{mcall-linux: -mbig} \
 926     %{mcall-netbsd: -mbig} \
 927 }}}}"
 928
 929 #define CC1_ENDIAN_BIG_SPEC ""
 930
 931 #define CC1_ENDIAN_LITTLE_SPEC "\
 932 %{!mstrict-align: %{!mno-strict-align: \
 933     %{!mcall-i960-old: \
 934         -mstrict-align \
 935     } \
 936 }}"
 937
 938 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big_spec)"
 939
 940 /* Pass -G xxx to the compiler and set correct endian mode.  */
 941 #define CC1_SPEC "%{G*} \
 942 %{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
 943 %{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
 944 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 945     %{mcall-aixdesc: -mbig %(cc1_endian_big) } \
 946     %{mcall-freebsd: -mbig %(cc1_endian_big) } \
 947     %{mcall-i960-old: -mlittle %(cc1_endian_little) } \
 948     %{mcall-linux: -mbig %(cc1_endian_big) } \
 949     %{mcall-netbsd: -mbig %(cc1_endian_big) } \
 950     %{!mcall-aixdesc: %{!mcall-freebsd: %{!mcall-i960-old: %{!mcall-linux: %{!mcall-netbsd: \
 951             %(cc1_endian_default) \
 952     }}}}} \
 953 }}}} \
 954 %{mno-sdata: -msdata=none } \
 955 %{meabi: %{!mcall-*: -mcall-sysv }} \
 956 %{!meabi: %{!mno-eabi: \
 957     %{mrelocatable: -meabi } \
 958     %{mcall-freebsd: -mno-eabi } \
 959     %{mcall-i960-old: -meabi } \
 960     %{mcall-linux: -mno-eabi } \
 961     %{mcall-netbsd: -mno-eabi }}} \
 962 %{msdata: -msdata=default} \
 963 %{mno-sdata: -msdata=none} \
 964 %{profile: -p}"
 965
 966 /* Don't put -Y P,<path> for cross compilers.  */
 967 #ifndef CROSS_COMPILE
 968 #define LINK_PATH_SPEC "\
 969 %{!R*:%{L*:-R %*}} \
 970 %{!nostdlib: %{!YP,*: \
 971     %{compat-bsd: \
 972         %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 973         %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
 974         %{!R*: %{!L*: -R /usr/ucblib}} \
 975     %{!compat-bsd: \
 976         %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 977         %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
 978
 979 #else
 980 #define LINK_PATH_SPEC ""
 981 #endif
 982
 983 /* Default starting address if specified.  */
 984 #define LINK_START_SPEC "\
 985 %{mads: %(link_start_ads) } \
 986 %{myellowknife: %(link_start_yellowknife) } \
 987 %{mmvme: %(link_start_mvme) } \
 988 %{msim: %(link_start_sim) } \
 989 %{mcall-freebsd: %(link_start_freebsd) } \
 990 %{mcall-linux: %(link_start_linux) } \
 991 %{mcall-netbsd: %(link_start_netbsd) } \
 992 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-linux: \
 993         %{!mcall-netbsd: %{!mcall-freebsd: %(link_start_default) }}}}}}}"
 994
 995 #define LINK_START_DEFAULT_SPEC ""
 996
 997 /* Override svr4.h definition.  */
 998 #undef  LINK_SPEC
 999 #define LINK_SPEC "\
1000 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
1001 %{YP,*} %{R*} \
1002 %{Qy:} %{!Qn:-Qy} \
1003 %(link_shlib) \
1004 %{!Wl,-T*: %{!T*: %(link_start) }} \
1005 %(link_target) \
1006 %(link_os)"
1007
1008 /* For now, turn off shared libraries by default.  */
1009 #ifndef SHARED_LIB_SUPPORT
1010 #define NO_SHARED_LIB_SUPPORT
1011 #endif
1012
1013 #ifndef NO_SHARED_LIB_SUPPORT
1014 /* Shared libraries are default.  */
1015 #define LINK_SHLIB_SPEC "\
1016 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
1017 %{mshlib: } \
1018 %{static:-dn -Bstatic} \
1019 %{shared:-G -dy -z text} \
1020 %{symbolic:-Bsymbolic -G -dy -z text}"
1021
1022 #else
1023 /* Shared libraries are not default.  */
1024 #define LINK_SHLIB_SPEC "\
1025 %{mshlib: %(link_path) } \
1026 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
1027 %{static: } \
1028 %{shared:-G -dy -z text %(link_path) } \
1029 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
1030 #endif
1031
1032 /* Override the default target of the linker.  */
1033 #define LINK_TARGET_SPEC "\
1034 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
1035 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
1036     %{mcall-i960-old: --oformat elf32-powerpcle} \
1037   }}}}"
1038
1039 /* Any specific OS flags.  */
1040 #define LINK_OS_SPEC "\
1041 %{mads: %(link_os_ads) } \
1042 %{myellowknife: %(link_os_yellowknife) } \
1043 %{mmvme: %(link_os_mvme) } \
1044 %{msim: %(link_os_sim) } \
1045 %{mcall-freebsd: %(link_os_freebsd) } \
1046 %{mcall-linux: %(link_os_linux) } \
1047 %{mcall-netbsd: %(link_os_netbsd) } \
1048 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(link_os_default) }}}}}}}"
1049
1050 #define LINK_OS_DEFAULT_SPEC ""
1051
1052 #define CPP_SYSV_SPEC \
1053 "%{mrelocatable*: -D_RELOCATABLE} \
1054 %{fpic: -D__PIC__=1 -D__pic__=1} \
1055 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}} \
1056 %{mlong-double-128: -D__LONG_DOUBLE_128__=1} \
1057 %{!mlong-double-64: %(cpp_longdouble_default)} \
1058 %{mcall-sysv: -D_CALL_SYSV} \
1059 %{mcall-aix: -D_CALL_AIX} %{mcall-aixdesc: -D_CALL_AIX -D_CALL_AIXDESC} \
1060 %{!mcall-sysv: %{!mcall-aix: %{!mcall-aixdesc: %(cpp_sysv_default) }}} \
1061 %{msoft-float: -D_SOFT_FLOAT} \
1062 %{!msoft-float: %{!mhard-float: \
1063     %{mcpu=401: -D_SOFT_FLOAT} \
1064     %{mcpu=403: -D_SOFT_FLOAT} \
1065     %{mcpu=ec603e: -D_SOFT_FLOAT} \
1066     %{mcpu=801: -D_SOFT_FLOAT} \
1067     %{mcpu=821: -D_SOFT_FLOAT} \
1068     %{mcpu=823: -D_SOFT_FLOAT} \
1069     %{mcpu=860: -D_SOFT_FLOAT} \
1070     %{!mcpu*: %(cpp_float_default) }}}"
1071
1072 /* Whether floating point is disabled by default.  */
1073 #define CPP_FLOAT_DEFAULT_SPEC ""
1074
1075 /* Whether 'long double' is 128 bits by default.  */
1076 #define CPP_LONGDOUBLE_DEFAULT_SPEC ""
1077
1078 #define CPP_SYSV_DEFAULT_SPEC "-D_CALL_SYSV"
1079
1080 #define CPP_ENDIAN_BIG_SPEC "-D_BIG_ENDIAN -D__BIG_ENDIAN__ -Amachine=bigendian"
1081
1082 #define CPP_ENDIAN_LITTLE_SPEC "-D_LITTLE_ENDIAN -D__LITTLE_ENDIAN__ -Amachine=littleendian"
1083
1084 #define CPP_ENDIAN_SPEC \
1085 "%{mlittle: %(cpp_endian_little) } \
1086 %{mlittle-endian: %(cpp_endian_little) } \
1087 %{mbig: %(cpp_endian_big) } \
1088 %{mbig-endian: %(cpp_endian_big) } \
1089 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
1090     %{mcall-freebsd: %(cpp_endian_big) } \
1091     %{mcall-linux: %(cpp_endian_big) } \
1092     %{mcall-netbsd: %(cpp_endian_big) } \
1093     %{mcall-i960-old: %(cpp_endian_little) } \
1094     %{mcall-aixdesc:  %(cpp_endian_big) } \
1095     %{!mcall-linux: %{!mcall-freebsd: %{!mcall-netbsd: %{!mcall-aixdesc: %(cpp_endian_default) }}}}}}}}"
1096
1097 #define CPP_ENDIAN_DEFAULT_SPEC "%(cpp_endian_big)"
1098
1099 /* Override rs6000.h definition.  */
1100 #undef  CPP_SPEC
1101 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) %(cpp_endian) %(cpp_cpu) \
1102 %{mads: %(cpp_os_ads) } \
1103 %{myellowknife: %(cpp_os_yellowknife) } \
1104 %{mmvme: %(cpp_os_mvme) } \
1105 %{msim: %(cpp_os_sim) } \
1106 %{mcall-freebsd: %(cpp_os_freebsd) } \
1107 %{mcall-linux: %(cpp_os_linux) } \
1108 %{mcall-netbsd: %(cpp_os_netbsd) } \
1109 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(cpp_os_default) }}}}}}}"
1110
1111 #define CPP_OS_DEFAULT_SPEC ""
1112
1113 /* Override svr4.h definition.  */
1114 #undef  STARTFILE_SPEC
1115 #define STARTFILE_SPEC "\
1116 %{mads: %(startfile_ads) } \
1117 %{myellowknife: %(startfile_yellowknife) } \
1118 %{mmvme: %(startfile_mvme) } \
1119 %{msim: %(startfile_sim) } \
1120 %{mcall-freebsd: %(startfile_freebsd) } \
1121 %{mcall-linux: %(startfile_linux) } \
1122 %{mcall-netbsd: %(startfile_netbsd) } \
1123 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(startfile_default) }}}}}}}"
1124
1125 #define STARTFILE_DEFAULT_SPEC ""
1126
1127 /* Override svr4.h definition.  */
1128 #undef  LIB_SPEC
1129 #define LIB_SPEC "\
1130 %{mads: %(lib_ads) } \
1131 %{myellowknife: %(lib_yellowknife) } \
1132 %{mmvme: %(lib_mvme) } \
1133 %{msim: %(lib_sim) } \
1134 %{mcall-freebsd: %(lib_freebsd) } \
1135 %{mcall-linux: %(lib_linux) } \
1136 %{mcall-netbsd: %(lib_netbsd) } \
1137 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %(lib_default) }}}}}}}"
1138
1139 #define LIB_DEFAULT_SPEC ""
1140
1141 /* Override svr4.h definition.  */
1142 #undef  ENDFILE_SPEC
1143 #define ENDFILE_SPEC "\
1144 %{mads: %(endfile_ads)} \
1145 %{myellowknife: %(endfile_yellowknife)} \
1146 %{mmvme: %(endfile_mvme)} \
1147 %{msim: %(endfile_sim)} \
1148 %{mcall-freebsd: %(endfile_freebsd) } \
1149 %{mcall-linux: %(endfile_linux) } \
1150 %{mcall-netbsd: %(endfile_netbsd) } \
1151 %{mvxworks: %(endfile_vxworks) } \
1152 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-netbsd: %{!mvxworks: %(endfile_default) }}}}}}}}"
1153
1154 #define ENDFILE_DEFAULT_SPEC ""
1155
1156 /* Motorola ADS support.  */
1157 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1158
1159 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1160
1161 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1162
1163 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1164
1165 #define LINK_OS_ADS_SPEC ""
1166
1167 #define CPP_OS_ADS_SPEC ""
1168
1169 /* Motorola Yellowknife support.  */
1170 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1171
1172 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1173
1174 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1175
1176 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1177
1178 #define LINK_OS_YELLOWKNIFE_SPEC ""
1179
1180 #define CPP_OS_YELLOWKNIFE_SPEC ""
1181
1182 /* Motorola MVME support.  */
1183 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1184
1185 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1186
1187 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1188
1189 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1190
1191 #define LINK_OS_MVME_SPEC ""
1192
1193 #define CPP_OS_MVME_SPEC ""
1194
1195 /* PowerPC simulator based on netbsd system calls support.  */
1196 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1197
1198 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1199
1200 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1201
1202 #define LINK_START_SIM_SPEC ""
1203
1204 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1205
1206 #define CPP_OS_SIM_SPEC ""
1207
1208 /* FreeBSD support.  */
1209
1210 #define CPP_OS_FREEBSD_SPEC     "\
1211   -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1212   -Acpu=powerpc -Amachine=powerpc"
1213
1214 #define STARTFILE_FREEBSD_SPEC  FBSD_STARTFILE_SPEC
1215 #define ENDFILE_FREEBSD_SPEC    FBSD_ENDFILE_SPEC
1216 #define LIB_FREEBSD_SPEC        FBSD_LIB_SPEC
1217 #define LINK_START_FREEBSD_SPEC ""
1218
1219 #define LINK_OS_FREEBSD_SPEC "\
1220   %{symbolic:-Bsymbolic}"
1221
1222 /* GNU/Linux support.  */
1223 #ifdef USE_GNULIBC_1
1224 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1225 %{!mnewlib: -lc }"
1226 #else
1227 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1228 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1229 %{profile:-lc_p} %{!profile:-lc}}}"
1230 #endif
1231
1232 #define STARTFILE_LINUX_SPEC "\
1233 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1234 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1235 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1236
1237 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1238 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1239
1240 #define LINK_START_LINUX_SPEC ""
1241
1242 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1243   %{rdynamic:-export-dynamic} \
1244   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1245
1246 #ifdef USE_GNULIBC_1
1247 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__               \
1248 %{!undef:                                                       \
1249   %{!ansi:                                                      \
1250     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                 \
1251     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}             \
1252 -Asystem=unix -Asystem=posix"
1253 #else
1254 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__               \
1255 %{!undef:                                                       \
1256   %{!ansi:                                                      \
1257     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                 \
1258     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}             \
1259 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1260 #endif
1261
1262 /* NetBSD support.  */
1263 #define LIB_NETBSD_SPEC "\
1264 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1265
1266 #define STARTFILE_NETBSD_SPEC "\
1267 ncrti.o%s crt0.o%s \
1268 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1269
1270 #define ENDFILE_NETBSD_SPEC "\
1271 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1272 ncrtn.o%s"
1273
1274 #define LINK_START_NETBSD_SPEC "\
1275 "
1276
1277 #define LINK_OS_NETBSD_SPEC "\
1278 %{!shared: %{!static: \
1279   %{rdynamic:-export-dynamic} \
1280   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1281
1282 #define CPP_OS_NETBSD_SPEC "\
1283 -D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
1284
1285 /* VxWorks support.  */
1286 /* VxWorks does all the library stuff itself.  */
1287 #define LIB_VXWORKS_SPEC ""
1288
1289 /* VxWorks provides the functionality of crt0.o and friends itself.  */
1290
1291 #define STARTFILE_VXWORKS_SPEC ""
1292
1293 #define ENDFILE_VXWORKS_SPEC ""
1294
1295 /* Because it uses ld -r, vxworks has no start/end files, nor starting
1296    address.  */
1297
1298 #define LINK_START_VXWORKS_SPEC ""
1299
1300 #define LINK_OS_VXWORKS_SPEC "-r"
1301
1302 #define CPP_OS_VXWORKS_SPEC "\
1303 -DCPU_FAMILY=PPC \
1304 %{!mcpu*: \
1305   %{mpowerpc*: -DCPU=PPC603} \
1306   %{!mno-powerpc: -DCPU=PPC603}} \
1307 %{mcpu=powerpc: -DCPU=PPC603} \
1308 %{mcpu=401: -DCPU=PPC403} \
1309 %{mcpu=403: -DCPU=PPC403} \
1310 %{mcpu=601: -DCPU=PPC601} \
1311 %{mcpu=602: -DCPU=PPC603} \
1312 %{mcpu=603: -DCPU=PPC603} \
1313 %{mcpu=603e: -DCPU=PPC603} \
1314 %{mcpu=ec603e: -DCPU=PPC603} \
1315 %{mcpu=604: -DCPU=PPC604} \
1316 %{mcpu=604e: -DCPU=PPC604} \
1317 %{mcpu=620: -DCPU=PPC604} \
1318 %{mcpu=740: -DCPU=PPC603} \
1319 %{mcpu=750: -DCPU=PPC603} \
1320 %{mcpu=801: -DCPU=PPC603} \
1321 %{mcpu=821: -DCPU=PPC603} \
1322 %{mcpu=823: -DCPU=PPC603} \
1323 %{mcpu=860: -DCPU=PPC603}"
1324
1325 /* Define any extra SPECS that the compiler needs to generate.  */
1326 /* Override rs6000.h definition.  */
1327 #undef  SUBTARGET_EXTRA_SPECS
1328 #define SUBTARGET_EXTRA_SPECS                                           \
1329   { "cpp_sysv",                 CPP_SYSV_SPEC },                        \
1330   { "cpp_sysv_default",         CPP_SYSV_DEFAULT_SPEC },                \
1331   { "cpp_endian_default",       CPP_ENDIAN_DEFAULT_SPEC },              \
1332   { "cpp_endian",               CPP_ENDIAN_SPEC },                      \
1333   { "lib_ads",                  LIB_ADS_SPEC },                         \
1334   { "lib_yellowknife",          LIB_YELLOWKNIFE_SPEC },                 \
1335   { "lib_mvme",                 LIB_MVME_SPEC },                        \
1336   { "lib_sim",                  LIB_SIM_SPEC },                         \
1337   { "lib_freebsd",              LIB_FREEBSD_SPEC },                     \
1338   { "lib_linux",                LIB_LINUX_SPEC },                       \
1339   { "lib_netbsd",               LIB_NETBSD_SPEC },                      \
1340   { "lib_vxworks",              LIB_VXWORKS_SPEC },                     \
1341   { "lib_default",              LIB_DEFAULT_SPEC },                     \
1342   { "startfile_ads",            STARTFILE_ADS_SPEC },                   \
1343   { "startfile_yellowknife",    STARTFILE_YELLOWKNIFE_SPEC },           \
1344   { "startfile_mvme",           STARTFILE_MVME_SPEC },                  \
1345   { "startfile_sim",            STARTFILE_SIM_SPEC },                   \
1346   { "startfile_freebsd",        STARTFILE_FREEBSD_SPEC },               \
1347   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
1348   { "startfile_netbsd",         STARTFILE_NETBSD_SPEC },                \
1349   { "startfile_vxworks",        STARTFILE_VXWORKS_SPEC },               \
1350   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
1351   { "endfile_ads",              ENDFILE_ADS_SPEC },                     \
1352   { "endfile_yellowknife",      ENDFILE_YELLOWKNIFE_SPEC },             \
1353   { "endfile_mvme",             ENDFILE_MVME_SPEC },                    \
1354   { "endfile_sim",              ENDFILE_SIM_SPEC },                     \
1355   { "endfile_freebsd",          ENDFILE_FREEBSD_SPEC },                 \
1356   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
1357   { "endfile_netbsd",           ENDFILE_NETBSD_SPEC },                  \
1358   { "endfile_vxworks",          ENDFILE_VXWORKS_SPEC },                 \
1359   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
1360   { "link_path",                LINK_PATH_SPEC },                       \
1361   { "link_shlib",               LINK_SHLIB_SPEC },                      \
1362   { "link_target",              LINK_TARGET_SPEC },                     \
1363   { "link_start",               LINK_START_SPEC },                      \
1364   { "link_start_ads",           LINK_START_ADS_SPEC },                  \
1365   { "link_start_yellowknife",   LINK_START_YELLOWKNIFE_SPEC },          \
1366   { "link_start_mvme",          LINK_START_MVME_SPEC },                 \
1367   { "link_start_sim",           LINK_START_SIM_SPEC },                  \
1368   { "link_start_freebsd",       LINK_START_FREEBSD_SPEC },              \
1369   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
1370   { "link_start_netbsd",        LINK_START_NETBSD_SPEC },               \
1371   { "link_start_vxworks",       LINK_START_VXWORKS_SPEC },              \
1372   { "link_start_default",       LINK_START_DEFAULT_SPEC },              \
1373   { "link_os",                  LINK_OS_SPEC },                         \
1374   { "link_os_ads",              LINK_OS_ADS_SPEC },                     \
1375   { "link_os_yellowknife",      LINK_OS_YELLOWKNIFE_SPEC },             \
1376   { "link_os_mvme",             LINK_OS_MVME_SPEC },                    \
1377   { "link_os_sim",              LINK_OS_SIM_SPEC },                     \
1378   { "link_os_freebsd",          LINK_OS_FREEBSD_SPEC },                 \
1379   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
1380   { "link_os_netbsd",           LINK_OS_NETBSD_SPEC },                  \
1381   { "link_os_vxworks",          LINK_OS_VXWORKS_SPEC },                 \
1382   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
1383   { "cc1_endian_big",           CC1_ENDIAN_BIG_SPEC },                  \
1384   { "cc1_endian_little",        CC1_ENDIAN_LITTLE_SPEC },               \
1385   { "cc1_endian_default",       CC1_ENDIAN_DEFAULT_SPEC },              \
1386   { "cpp_endian_big",           CPP_ENDIAN_BIG_SPEC },                  \
1387   { "cpp_endian_little",        CPP_ENDIAN_LITTLE_SPEC },               \
1388   { "cpp_float_default",        CPP_FLOAT_DEFAULT_SPEC },               \
1389   { "cpp_longdouble_default",   CPP_LONGDOUBLE_DEFAULT_SPEC },          \
1390   { "cpp_os_ads",               CPP_OS_ADS_SPEC },                      \
1391   { "cpp_os_yellowknife",       CPP_OS_YELLOWKNIFE_SPEC },              \
1392   { "cpp_os_mvme",              CPP_OS_MVME_SPEC },                     \
1393   { "cpp_os_sim",               CPP_OS_SIM_SPEC },                      \
1394   { "cpp_os_freebsd",           CPP_OS_FREEBSD_SPEC },                  \
1395   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
1396   { "cpp_os_netbsd",            CPP_OS_NETBSD_SPEC },                   \
1397   { "cpp_os_vxworks",           CPP_OS_VXWORKS_SPEC },                  \
1398   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
1399
1400 /* Define this macro as a C expression for the initializer of an
1401    array of string to tell the driver program which options are
1402    defaults for this target and thus do not need to be handled
1403    specially when using `MULTILIB_OPTIONS'.
1404
1405    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1406    the target makefile fragment or if none of the options listed in
1407    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
1408
1409 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1410
1411 /* Define this macro if the code for function profiling should come
1412    before the function prologue.  Normally, the profiling code comes
1413    after.  */
1414 #define PROFILE_BEFORE_PROLOGUE 1
1415
1416 /* Function name to call to do profiling.  */
1417 #define RS6000_MCOUNT "_mcount"
1418
1419 /* Define this macro (to a value of 1) if you want to support the
1420    Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1421    pack(pop)'.  The pack(push,<n>) pragma specifies the maximum
1422    alignment (in bytes) of fields within a structure, in much the
1423    same way as the __aligned__' and __packed__' __attribute__'s
1424    do.  A pack value of zero resets the behaviour to the default.
1425    Successive invocations of this pragma cause the previous values to
1426    be stacked, so that invocations of #pragma pack(pop)' will return
1427    to the previous value.  */
1428
1429 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1430
1431 /* Define library calls for quad FP operations.  These are all part of the
1432    PowerPC 32bit ABI.  */
1433 #define ADDTF3_LIBCALL "_q_add"
1434 #define DIVTF3_LIBCALL "_q_div"
1435 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1436 #define EQTF2_LIBCALL "_q_feq"
1437 #define GETF2_LIBCALL "_q_fge"
1438 #define GTTF2_LIBCALL "_q_fgt"
1439 #define LETF2_LIBCALL "_q_fle"
1440 #define LTTF2_LIBCALL "_q_flt"
1441 #define NETF2_LIBCALL "_q_fne"
1442 #define FLOATSITF2_LIBCALL "_q_itoq"
1443 #define MULTF3_LIBCALL "_q_mul"
1444 #define NEGTF2_LIBCALL "_q_neg"
1445 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1446 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1447 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1448 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1449 #define SQRTTF_LIBCALL "_q_sqrt"
1450 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1451 #define SUBTF3_LIBCALL "_q_sub"
1452 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1453
1454 #define INIT_TARGET_OPTABS                                              \
1455   do {                                                                  \
1456     if (TARGET_HARD_FLOAT)                                              \
1457       {                                                                 \
1458         add_optab->handlers[(int) TFmode].libfunc                       \
1459           = init_one_libfunc (ADDTF3_LIBCALL);                          \
1460         sub_optab->handlers[(int) TFmode].libfunc                       \
1461           = init_one_libfunc (SUBTF3_LIBCALL);                          \
1462         neg_optab->handlers[(int) TFmode].libfunc                       \
1463           = init_one_libfunc (NEGTF2_LIBCALL);                          \
1464         smul_optab->handlers[(int) TFmode].libfunc                      \
1465           = init_one_libfunc (MULTF3_LIBCALL);                          \
1466         sdiv_optab->handlers[(int) TFmode].libfunc                      \
1467           = init_one_libfunc (DIVTF3_LIBCALL);                          \
1468         eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL);               \
1469         netf2_libfunc = init_one_libfunc (NETF2_LIBCALL);               \
1470         gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL);               \
1471         getf2_libfunc = init_one_libfunc (GETF2_LIBCALL);               \
1472         lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL);               \
1473         letf2_libfunc = init_one_libfunc (LETF2_LIBCALL);               \
1474         trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL);     \
1475         trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL);     \
1476         extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL);   \
1477         extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL);   \
1478         floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL);      \
1479         fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL);    \
1480         fixunstfsi_libfunc                                              \
1481           = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL);               \
1482         if (TARGET_PPC_GPOPT || TARGET_POWER2)                          \
1483           sqrt_optab->handlers[(int) TFmode].libfunc                    \
1484             = init_one_libfunc (SQRTTF_LIBCALL);                        \
1485       }                                                                 \
1486   } while (0)
1487
1488 /* Select a format to encode pointers in exception handling data.  CODE
1489    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
1490    true if the symbol may be affected by dynamic relocations.  */
1491 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                            \
1492   ((flag_pic || TARGET_RELOCATABLE)                                          \
1493    ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1494    : DW_EH_PE_absptr)
1495
1496 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1497
1498 #define DOUBLE_INT_ASM_OP "\t.quad\t"