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 bit-field") },                    \
 105   { "no-bit-align",      MASK_NO_BITFIELD_TYPE,                         \
 106     N_("Don't align to the base type of the bit-field") },              \
 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 bit-fields 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, "gnu"))                            \
 201     rs6000_current_abi = ABI_V4;                                        \
 202   else if (!strcmp (rs6000_abi_name, "netbsd"))                         \
 203     rs6000_current_abi = ABI_V4;                                        \
 204   else if (!strcmp (rs6000_abi_name, "i960-old"))                       \
 205     {                                                                   \
 206       rs6000_current_abi = ABI_V4;                                      \
 207       target_flags |= (MASK_LITTLE_ENDIAN | MASK_EABI                   \
 208                        | MASK_NO_BITFIELD_WORD);                        \
 209       target_flags &= ~MASK_STRICT_ALIGN;                               \
 210     }                                                                   \
 211   else                                                                  \
 212     {                                                                   \
 213       rs6000_current_abi = ABI_V4;                                      \
 214       error ("bad value for -mcall-%s", rs6000_abi_name);               \
 215     }                                                                   \
 216                                                                         \
 217   if (rs6000_sdata_name)                                                \
 218     {                                                                   \
 219       if (!strcmp (rs6000_sdata_name, "none"))                          \
 220         rs6000_sdata = SDATA_NONE;                                      \
 221       else if (!strcmp (rs6000_sdata_name, "data"))                     \
 222         rs6000_sdata = SDATA_DATA;                                      \
 223       else if (!strcmp (rs6000_sdata_name, "default"))                  \
 224         rs6000_sdata = (TARGET_EABI) ? SDATA_EABI : SDATA_SYSV;         \
 225       else if (!strcmp (rs6000_sdata_name, "sysv"))                     \
 226         rs6000_sdata = SDATA_SYSV;                                      \
 227       else if (!strcmp (rs6000_sdata_name, "eabi"))                     \
 228         rs6000_sdata = SDATA_EABI;                                      \
 229       else                                                              \
 230         error ("bad value for -msdata=%s", rs6000_sdata_name);          \
 231     }                                                                   \
 232   else if (DEFAULT_ABI == ABI_V4)                                       \
 233     {                                                                   \
 234       rs6000_sdata = SDATA_DATA;                                        \
 235       rs6000_sdata_name = "data";                                       \
 236     }                                                                   \
 237   else                                                                  \
 238     {                                                                   \
 239       rs6000_sdata = SDATA_NONE;                                        \
 240       rs6000_sdata_name = "none";                                       \
 241     }                                                                   \
 242                                                                         \
 243   if (TARGET_RELOCATABLE &&                                             \
 244       (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))       \
 245     {                                                                   \
 246       rs6000_sdata = SDATA_DATA;                                        \
 247       error ("-mrelocatable and -msdata=%s are incompatible",           \
 248              rs6000_sdata_name);                                        \
 249     }                                                                   \
 250                                                                         \
 251   else if (flag_pic &&                                                  \
 252            (rs6000_sdata == SDATA_EABI || rs6000_sdata == SDATA_SYSV))  \
 253     {                                                                   \
 254       rs6000_sdata = SDATA_DATA;                                        \
 255       error ("-f%s and -msdata=%s are incompatible",                    \
 256              (flag_pic > 1) ? "PIC" : "pic",                            \
 257              rs6000_sdata_name);                                        \
 258     }                                                                   \
 259                                                                         \
 260   if (rs6000_sdata != SDATA_NONE && DEFAULT_ABI != ABI_V4)              \
 261     {                                                                   \
 262       rs6000_sdata = SDATA_NONE;                                        \
 263       error ("-msdata=%s and -mcall-%s are incompatible",               \
 264              rs6000_sdata_name, rs6000_abi_name);                       \
 265     }                                                                   \
 266                                                                         \
 267   if (TARGET_RELOCATABLE && !TARGET_MINIMAL_TOC)                        \
 268     {                                                                   \
 269       target_flags |= MASK_MINIMAL_TOC;                                 \
 270       error ("-mrelocatable and -mno-minimal-toc are incompatible");    \
 271     }                                                                   \
 272                                                                         \
 273   if (TARGET_RELOCATABLE && rs6000_current_abi == ABI_AIX)              \
 274     {                                                                   \
 275       target_flags &= ~MASK_RELOCATABLE;                                \
 276       error ("-mrelocatable and -mcall-%s are incompatible",            \
 277              rs6000_abi_name);                                          \
 278     }                                                                   \
 279                                                                         \
 280   if (flag_pic > 1 && rs6000_current_abi == ABI_AIX)                    \
 281     {                                                                   \
 282       flag_pic = 0;                                                     \
 283       error ("-fPIC and -mcall-%s are incompatible",                    \
 284              rs6000_abi_name);                                          \
 285     }                                                                   \
 286                                                                         \
 287   if (rs6000_current_abi == ABI_AIX && TARGET_LITTLE_ENDIAN)            \
 288     {                                                                   \
 289       target_flags &= ~MASK_LITTLE_ENDIAN;                              \
 290       error ("-mcall-aixdesc must be big endian");                      \
 291     }                                                                   \
 292                                                                         \
 293   /* Treat -fPIC the same as -mrelocatable.  */                         \
 294   if (flag_pic > 1)                                                     \
 295     target_flags |= MASK_RELOCATABLE | MASK_MINIMAL_TOC | MASK_NO_FP_IN_TOC; \
 296                                                                         \
 297   else if (TARGET_RELOCATABLE)                                          \
 298     flag_pic = 2;                                                       \
 299                                                                         \
 300 } while (0)
 301
 302
 303 /* Override rs6000.h definition.  */
 304 #undef  TARGET_DEFAULT
 305 #define TARGET_DEFAULT (MASK_POWERPC | MASK_NEW_MNEMONICS)
 306
 307 /* Override rs6000.h definition.  */
 308 #undef  PROCESSOR_DEFAULT
 309 #define PROCESSOR_DEFAULT PROCESSOR_PPC750
 310
 311 #define FIXED_R2 1
 312 /* System V.4 uses register 13 as a pointer to the small data area,
 313    so it is not available to the normal user.  */
 314 #define FIXED_R13 1
 315
 316 /* Size of the V.4 varargs area if needed.  */
 317 /* Override rs6000.h definition.  */
 318 #undef  RS6000_VARARGS_AREA
 319 #define RS6000_VARARGS_AREA ((cfun->machine->sysv_varargs_p) ? RS6000_VARARGS_SIZE : 0)
 320
 321 /* Override default big endianism definitions in rs6000.h.  */
 322 #undef  BYTES_BIG_ENDIAN
 323 #undef  WORDS_BIG_ENDIAN
 324 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN)
 325 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
 326
 327 /* Define this to set the endianness to use in libgcc2.c, which can
 328    not depend on target_flags.  */
 329 #if !defined(_LITTLE_ENDIAN) && !defined(__sun__)
 330 #define LIBGCC2_WORDS_BIG_ENDIAN 1
 331 #else
 332 #define LIBGCC2_WORDS_BIG_ENDIAN 0
 333 #endif
 334
 335 /* Define cutoff for using external functions to save floating point.
 336    Currently on V.4, always use inline stores.  */
 337 #define FP_SAVE_INLINE(FIRST_REG) ((FIRST_REG) < 64)
 338
 339 /* Put jump tables in read-only memory, rather than in .text.  */
 340 #define JUMP_TABLES_IN_TEXT_SECTION 0
 341
 342 /* Prefix and suffix to use to saving floating point.  */
 343 #define SAVE_FP_PREFIX "_savefpr_"
 344 #define SAVE_FP_SUFFIX "_l"
 345
 346 /* Prefix and suffix to use to restoring floating point.  */
 347 #define RESTORE_FP_PREFIX "_restfpr_"
 348 #define RESTORE_FP_SUFFIX "_l"
 349
 350 /* Type used for ptrdiff_t, as a string used in a declaration.  */
 351 #define PTRDIFF_TYPE "int"
 352
 353 /* Type used for wchar_t, as a string used in a declaration.  */
 354 /* Override svr4.h definition.  */
 355 #undef  WCHAR_TYPE
 356 #define WCHAR_TYPE "long int"
 357
 358 /* Width of wchar_t in bits.  */
 359 /* Override svr4.h definition.  */
 360 #undef  WCHAR_TYPE_SIZE
 361 #define WCHAR_TYPE_SIZE 32
 362
 363 /* Make int foo : 8 not cause structures to be aligned to an int boundary.  */
 364 /* Override elfos.h definition.  */
 365 #undef  PCC_BITFIELD_TYPE_MATTERS
 366 #define PCC_BITFIELD_TYPE_MATTERS (TARGET_BITFIELD_TYPE)
 367
 368 #undef  BITFIELD_NBYTES_LIMITED
 369 #define BITFIELD_NBYTES_LIMITED (TARGET_NO_BITFIELD_WORD)
 370
 371 /* Define this macro to be the value 1 if instructions will fail to
 372    work if given data not on the nominal alignment.  If instructions
 373    will merely go slower in that case, define this macro as 0.  */
 374 #undef  STRICT_ALIGNMENT
 375 #define STRICT_ALIGNMENT (TARGET_STRICT_ALIGN)
 376
 377 /* Alignment in bits of the stack boundary.  Note, in order to allow building
 378    one set of libraries with -mno-eabi instead of eabi libraries and non-eabi
 379    versions, just use 64 as the stack boundary.  */
 380 #undef  STACK_BOUNDARY
 381 #define STACK_BOUNDARY  (TARGET_ALTIVEC_ABI ? 128 : 64)
 382
 383 /* Real stack boundary as mandated by the appropriate ABI.  */
 384 #define ABI_STACK_BOUNDARY ((TARGET_EABI && !TARGET_ALTIVEC_ABI) ? 64 : 128)
 385
 386 /* An expression for the alignment of a structure field FIELD if the
 387    alignment computed in the usual way is COMPUTED.  */
 388 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED)                                   \
 389         ((TARGET_ALTIVEC && TREE_CODE (TREE_TYPE (FIELD)) == VECTOR_TYPE)     \
 390          ? 128 : COMPUTED)
 391
 392 /* Define this macro as an expression for the alignment of a type
 393    (given by TYPE as a tree node) if the alignment computed in the
 394    usual way is COMPUTED and the alignment explicitly specified was
 395    SPECIFIED.  */
 396 #define ROUND_TYPE_ALIGN(TYPE, COMPUTED, SPECIFIED)                     \
 397         ((TARGET_ALTIVEC  && TREE_CODE (TYPE) == VECTOR_TYPE)           \
 398          ? MAX (MAX ((COMPUTED), (SPECIFIED)), 128)                     \
 399          : MAX (COMPUTED, SPECIFIED))
 400
 401 #undef  BIGGEST_FIELD_ALIGNMENT
 402 #undef  ADJUST_FIELD_ALIGN
 403
 404 /* Use ELF style section commands.  */
 405
 406 #define TEXT_SECTION_ASM_OP     "\t.section\t\".text\""
 407
 408 #define DATA_SECTION_ASM_OP     "\t.section\t\".data\""
 409
 410 #define BSS_SECTION_ASM_OP      "\t.section\t\".bss\""
 411
 412 /* Override elfos.h definition.  */
 413 #undef  INIT_SECTION_ASM_OP
 414 #define INIT_SECTION_ASM_OP "\t.section\t\".init\",\"ax\""
 415
 416 /* Override elfos.h definition.  */
 417 #undef  FINI_SECTION_ASM_OP
 418 #define FINI_SECTION_ASM_OP "\t.section\t\".fini\",\"ax\""
 419
 420 #define TOC_SECTION_ASM_OP "\t.section\t\".got\",\"aw\""
 421
 422 /* Put PC relative got entries in .got2.  */
 423 #define MINIMAL_TOC_SECTION_ASM_OP \
 424   ((TARGET_RELOCATABLE || flag_pic) ? "\t.section\t\".got2\",\"aw\"" : "\t.section\t\".got1\",\"aw\"")
 425
 426 #define SDATA_SECTION_ASM_OP "\t.section\t\".sdata\",\"aw\""
 427 #define SDATA2_SECTION_ASM_OP "\t.section\t\".sdata2\",\"a\""
 428 #define SBSS_SECTION_ASM_OP "\t.section\t\".sbss\",\"aw\",@nobits"
 429
 430 /* Besides the usual ELF sections, we need a toc section.  */
 431 /* Override elfos.h definition.  */
 432 #undef  EXTRA_SECTIONS
 433 #define EXTRA_SECTIONS in_const, in_toc, in_sdata, in_sdata2, in_sbss, in_init, in_fini
 434
 435 /* Override elfos.h definition.  */
 436 #undef  EXTRA_SECTION_FUNCTIONS
 437 #define EXTRA_SECTION_FUNCTIONS                                         \
 438   CONST_SECTION_FUNCTION                                                \
 439   TOC_SECTION_FUNCTION                                                  \
 440   SDATA_SECTION_FUNCTION                                                \
 441   SDATA2_SECTION_FUNCTION                                               \
 442   SBSS_SECTION_FUNCTION                                                 \
 443   INIT_SECTION_FUNCTION                                                 \
 444   FINI_SECTION_FUNCTION
 445
 446 #define TOC_SECTION_FUNCTION                                            \
 447 void                                                                    \
 448 toc_section ()                                                          \
 449 {                                                                       \
 450   if (in_section != in_toc)                                             \
 451     {                                                                   \
 452       in_section = in_toc;                                              \
 453       if (DEFAULT_ABI == ABI_AIX                                        \
 454           && TARGET_MINIMAL_TOC                                         \
 455           && !TARGET_RELOCATABLE)                                       \
 456         {                                                               \
 457           if (! toc_initialized)                                        \
 458             {                                                           \
 459               toc_initialized = 1;                                      \
 460               fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);       \
 461               ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, "LCTOC", 0);     \
 462               fprintf (asm_out_file, "\t.tc ");                         \
 463               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1[TC],"); \
 464               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 465               fprintf (asm_out_file, "\n");                             \
 466                                                                         \
 467               fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 468               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 469               fprintf (asm_out_file, " = .+32768\n");                   \
 470             }                                                           \
 471           else                                                          \
 472             fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP); \
 473         }                                                               \
 474       else if (DEFAULT_ABI == ABI_AIX && !TARGET_RELOCATABLE)           \
 475         fprintf (asm_out_file, "%s\n", TOC_SECTION_ASM_OP);             \
 476       else                                                              \
 477         {                                                               \
 478           fprintf (asm_out_file, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);   \
 479           if (! toc_initialized)                                        \
 480             {                                                           \
 481               ASM_OUTPUT_INTERNAL_LABEL_PREFIX (asm_out_file, "LCTOC1"); \
 482               fprintf (asm_out_file, " = .+32768\n");                   \
 483               toc_initialized = 1;                                      \
 484             }                                                           \
 485         }                                                               \
 486     }                                                                   \
 487 }                                                                       \
 488                                                                         \
 489 extern int in_toc_section PARAMS ((void));                              \
 490 int in_toc_section ()                                                   \
 491 {                                                                       \
 492   return in_section == in_toc;                                          \
 493 }
 494
 495 #define SDATA_SECTION_FUNCTION                                          \
 496 void                                                                    \
 497 sdata_section ()                                                        \
 498 {                                                                       \
 499   if (in_section != in_sdata)                                           \
 500     {                                                                   \
 501       in_section = in_sdata;                                            \
 502       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);             \
 503     }                                                                   \
 504 }
 505
 506 #define SDATA2_SECTION_FUNCTION                                         \
 507 void                                                                    \
 508 sdata2_section ()                                                       \
 509 {                                                                       \
 510   if (in_section != in_sdata2)                                          \
 511     {                                                                   \
 512       in_section = in_sdata2;                                           \
 513       fprintf (asm_out_file, "%s\n", SDATA2_SECTION_ASM_OP);            \
 514     }                                                                   \
 515 }
 516
 517 #define SBSS_SECTION_FUNCTION                                           \
 518 void                                                                    \
 519 sbss_section ()                                                         \
 520 {                                                                       \
 521   if (in_section != in_sbss)                                            \
 522     {                                                                   \
 523       in_section = in_sbss;                                             \
 524       fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP);              \
 525     }                                                                   \
 526 }
 527
 528 #define INIT_SECTION_FUNCTION                                           \
 529 void                                                                    \
 530 init_section ()                                                         \
 531 {                                                                       \
 532   if (in_section != in_init)                                            \
 533     {                                                                   \
 534       in_section = in_init;                                             \
 535       fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP);              \
 536     }                                                                   \
 537 }
 538
 539 #define FINI_SECTION_FUNCTION                                           \
 540 void                                                                    \
 541 fini_section ()                                                         \
 542 {                                                                       \
 543   if (in_section != in_fini)                                            \
 544     {                                                                   \
 545       in_section = in_fini;                                             \
 546       fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP);              \
 547     }                                                                   \
 548 }
 549
 550 /* A C statement or statements to switch to the appropriate section
 551    for output of RTX in mode MODE.  You can assume that RTX is some
 552    kind of constant in RTL.  The argument MODE is redundant except in
 553    the case of a `const_int' rtx.  Select the section by calling
 554    `text_section' or one of the alternatives for other sections.
 555
 556    Do not define this macro if you put all constants in the read-only
 557    data section.  */
 558
 559 /* Override elfos.h definition.  */
 560 #undef  SELECT_RTX_SECTION
 561 #define SELECT_RTX_SECTION(MODE, X, ALIGN) rs6000_select_rtx_section (MODE, X)
 562
 563 /* A C statement or statements to switch to the appropriate
 564    section for output of DECL.  DECL is either a `VAR_DECL' node
 565    or a constant of some sort.  RELOC indicates whether forming
 566    the initial value of DECL requires link-time relocations.  */
 567
 568 /* Override elfos.h definition.  */
 569 #undef  SELECT_SECTION
 570 #define SELECT_SECTION(DECL, RELOC, ALIGN) rs6000_select_section (DECL, RELOC)
 571
 572 /* A C statement to build up a unique section name, expressed as a
 573    STRING_CST node, and assign it to DECL_SECTION_NAME (decl).
 574    RELOC indicates whether the initial value of EXP requires
 575    link-time relocations.  If you do not define this macro, GCC will use
 576    the symbol name prefixed by `.' as the section name.  Note - this
 577    macro can now be called for uninitialized data items as well as
 578    initialised data and functions.  */
 579
 580 /* Override elfos.h definition.  */
 581 #undef  UNIQUE_SECTION
 582 #define UNIQUE_SECTION(DECL, RELOC) rs6000_unique_section (DECL, RELOC)
 583
 584 /* Return non-zero if this entry is to be written into the constant pool
 585    in a special way.  We do so if this is a SYMBOL_REF, LABEL_REF or a CONST
 586    containing one of them.  If -mfp-in-toc (the default), we also do
 587    this for floating-point constants.  We actually can only do this
 588    if the FP formats of the target and host machines are the same, but
 589    we can't check that since not every file that uses
 590    GO_IF_LEGITIMATE_ADDRESS_P includes real.h.
 591
 592    Unlike AIX, we don't key off of -mminimal-toc, but instead do not
 593    allow floating point constants in the TOC if -mrelocatable.  */
 594
 595 #undef  ASM_OUTPUT_SPECIAL_POOL_ENTRY_P
 596 #define ASM_OUTPUT_SPECIAL_POOL_ENTRY_P(X, MODE)                        \
 597   (TARGET_TOC                                                           \
 598    && (GET_CODE (X) == SYMBOL_REF                                       \
 599        || (GET_CODE (X) == CONST && GET_CODE (XEXP (X, 0)) == PLUS      \
 600            && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF)           \
 601        || GET_CODE (X) == LABEL_REF                                     \
 602        || (GET_CODE (X) == CONST_INT                                    \
 603            && GET_MODE_BITSIZE (MODE) <= GET_MODE_BITSIZE (Pmode))      \
 604        || (!TARGET_NO_FP_IN_TOC                                         \
 605            && !TARGET_RELOCATABLE                                       \
 606            && GET_CODE (X) == CONST_DOUBLE                              \
 607            && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT               \
 608            && BITS_PER_WORD == HOST_BITS_PER_INT)))
 609
 610 /* These macros generate the special .type and .size directives which
 611    are used to set the corresponding fields of the linker symbol table
 612    entries in an ELF object file under SVR4.  These macros also output
 613    the starting labels for the relevant functions/objects.  */
 614
 615 /* Write the extra assembler code needed to declare a function properly.
 616    Some svr4 assemblers need to also have something extra said about the
 617    function's return value.  We allow for that here.  */
 618
 619 extern int rs6000_pic_labelno;
 620
 621 /* Override elfos.h definition.  */
 622 #undef  ASM_DECLARE_FUNCTION_NAME
 623 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 624   do {                                                                  \
 625     const char *const init_ptr = (TARGET_64BIT) ? ".quad" : ".long";    \
 626                                                                         \
 627     if (TARGET_RELOCATABLE                                              \
 628         && (get_pool_size () != 0 || current_function_profile)          \
 629         && uses_TOC())                                                  \
 630       {                                                                 \
 631         char buf[256];                                                  \
 632                                                                         \
 633         ASM_OUTPUT_INTERNAL_LABEL (FILE, "LCL", rs6000_pic_labelno);    \
 634                                                                         \
 635         ASM_GENERATE_INTERNAL_LABEL (buf, "LCTOC", 1);                  \
 636         fprintf (FILE, "\t%s ", init_ptr);                              \
 637         assemble_name (FILE, buf);                                      \
 638         putc ('-', FILE);                                               \
 639         ASM_GENERATE_INTERNAL_LABEL (buf, "LCF", rs6000_pic_labelno);   \
 640         assemble_name (FILE, buf);                                      \
 641         putc ('\n', FILE);                                              \
 642       }                                                                 \
 643                                                                         \
 644     fprintf (FILE, "%s", TYPE_ASM_OP);                                  \
 645     assemble_name (FILE, NAME);                                         \
 646     putc (',', FILE);                                                   \
 647     fprintf (FILE, TYPE_OPERAND_FMT, "function");                       \
 648     putc ('\n', FILE);                                                  \
 649     ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                      \
 650                                                                         \
 651     if (DEFAULT_ABI == ABI_AIX)                                         \
 652       {                                                                 \
 653         const char *desc_name, *orig_name;                              \
 654                                                                         \
 655         STRIP_NAME_ENCODING (orig_name, NAME);                          \
 656         desc_name = orig_name;                                          \
 657         while (*desc_name == '.')                                       \
 658           desc_name++;                                                  \
 659                                                                         \
 660         if (TREE_PUBLIC (DECL))                                         \
 661           fprintf (FILE, "\t.globl %s\n", desc_name);                   \
 662                                                                         \
 663         fprintf (FILE, "%s\n", MINIMAL_TOC_SECTION_ASM_OP);             \
 664         fprintf (FILE, "%s:\n", desc_name);                             \
 665         fprintf (FILE, "\t%s %s\n", init_ptr, orig_name);               \
 666         fprintf (FILE, "\t%s _GLOBAL_OFFSET_TABLE_\n", init_ptr);       \
 667         if (DEFAULT_ABI == ABI_AIX)                                     \
 668           fprintf (FILE, "\t%s 0\n", init_ptr);                         \
 669         fprintf (FILE, "\t.previous\n");                                \
 670       }                                                                 \
 671     ASM_OUTPUT_LABEL (FILE, NAME);                                      \
 672   } while (0)
 673
 674 /* A C compound statement that outputs the assembler code for a thunk function,
 675     used to implement C++ virtual function calls with multiple inheritance.  The
 676     thunk acts as a wrapper around a virtual function, adjusting the implicit
 677     object parameter before handing control off to the real function.
 678
 679     First, emit code to add the integer DELTA to the location that contains the
 680     incoming first argument.  Assume that this argument contains a pointer, and
 681     is the one used to pass the this' pointer in C++.  This is the incoming
 682     argument *before* the function prologue, e.g. %o0' on a sparc.  The
 683     addition must preserve the values of all other incoming arguments.
 684
 685     After the addition, emit code to jump to FUNCTION, which is a
 686     FUNCTION_DECL'.  This is a direct pure jump, not a call, and does not touch
 687     the return address.  Hence returning from FUNCTION will return to whoever
 688     called the current thunk'.
 689
 690     The effect must be as if FUNCTION had been called directly with the adjusted
 691     first argument.  This macro is responsible for emitting all of the code for
 692     a thunk function; FUNCTION_PROLOGUE' and FUNCTION_EPILOGUE' are not
 693     invoked.
 694
 695     The THUNK_FNDECL is redundant.  (DELTA and FUNCTION have already been
 696     extracted from it.)  It might possibly be useful on some targets, but
 697     probably not.
 698
 699     If you do not define this macro, the target-independent code in the C++
 700     frontend will generate a less efficient heavyweight thunk that calls
 701     FUNCTION instead of jumping to it.  The generic approach does not support
 702     varargs.  */
 703
 704 #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
 705   output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
 706
 707 /* The USER_LABEL_PREFIX stuff is affected by the -fleading-underscore
 708    flag.  The LOCAL_LABEL_PREFIX variable is used by dbxelf.h.  */
 709
 710 #define LOCAL_LABEL_PREFIX "."
 711 #define USER_LABEL_PREFIX ""
 712
 713 /* svr4.h overrides ASM_OUTPUT_INTERNAL_LABEL.  */
 714
 715 #define ASM_OUTPUT_INTERNAL_LABEL_PREFIX(FILE,PREFIX)   \
 716   asm_fprintf (FILE, "%L%s", PREFIX)
 717
 718 #define ASM_OUTPUT_LABEL(FILE,NAME)     \
 719   (assemble_name (FILE, NAME), fputs (":\n", FILE))
 720
 721 /* This is how to output a command to make the user-level label named NAME
 722    defined for reference from other files.  */
 723
 724 #define ASM_GLOBALIZE_LABEL(FILE,NAME)  \
 725   do { fputs ("\t.globl ", FILE);       \
 726        assemble_name (FILE, NAME); putc ('\n', FILE);} while (0)
 727
 728 /* This says how to output assembler code to declare an
 729    uninitialized internal linkage data object.  Under SVR4,
 730    the linker seems to want the alignment of data objects
 731    to depend on their types.  We do exactly that here.  */
 732
 733 #define LOCAL_ASM_OP    "\t.local\t"
 734
 735 #define LCOMM_ASM_OP    "\t.lcomm\t"
 736
 737 /* Override elfos.h definition.  */
 738 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 739 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 740 do {                                                                    \
 741   if (rs6000_sdata != SDATA_NONE && (SIZE) > 0                          \
 742       && (SIZE) <= g_switch_value)                                      \
 743     {                                                                   \
 744       sbss_section ();                                                  \
 745       ASM_OUTPUT_ALIGN (FILE, exact_log2 (ALIGN / BITS_PER_UNIT));      \
 746       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 747       ASM_OUTPUT_SKIP (FILE, SIZE);                                     \
 748       if (!flag_inhibit_size_directive && (SIZE) > 0)                   \
 749         {                                                               \
 750           fprintf (FILE, "%s", SIZE_ASM_OP);                            \
 751           assemble_name (FILE, NAME);                                   \
 752           fprintf (FILE, ",%d\n",  SIZE);                               \
 753         }                                                               \
 754     }                                                                   \
 755   else                                                                  \
 756     {                                                                   \
 757       fprintf (FILE, "%s", LCOMM_ASM_OP);                               \
 758       assemble_name ((FILE), (NAME));                                   \
 759       fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN) / BITS_PER_UNIT);    \
 760     }                                                                   \
 761 } while (0)
 762
 763 /* Describe how to emit uninitialized external linkage items.  */
 764 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)           \
 765 do {                                                                    \
 766   ASM_GLOBALIZE_LABEL (FILE, NAME);                                     \
 767   ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN);                   \
 768 } while (0)
 769
 770 /* Switch  Recognition by gcc.c.  Add -G xx support.  */
 771
 772 /* Override svr4.h definition.  */
 773 #undef  SWITCH_TAKES_ARG
 774 #define SWITCH_TAKES_ARG(CHAR)                                          \
 775   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o'                      \
 776    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u'                   \
 777    || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x'                   \
 778    || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V'                   \
 779    || (CHAR) == 'B' || (CHAR) == 'b' || (CHAR) == 'G')
 780
 781 /* Output .file.  */
 782 /* Override elfos.h definition.  */
 783 #undef  ASM_FILE_START
 784 #define ASM_FILE_START(FILE)                                            \
 785 do {                                                                    \
 786   output_file_directive ((FILE), main_input_filename);                  \
 787   rs6000_file_start (FILE, TARGET_CPU_DEFAULT);                         \
 788 } while (0)
 789
 790
 791 extern int fixuplabelno;
 792
 793 /* Handle constructors specially for -mrelocatable.  */
 794 #define TARGET_ASM_CONSTRUCTOR  rs6000_elf_asm_out_constructor
 795 #define TARGET_ASM_DESTRUCTOR   rs6000_elf_asm_out_destructor
 796
 797 /* This is the end of what might become sysv4.h.  */
 798
 799 /* Use DWARF 2 debugging information by default.  */
 800 #undef  PREFERRED_DEBUGGING_TYPE
 801 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 802
 803 /* Historically we have also supported stabs debugging.  */
 804 #define DBX_DEBUGGING_INFO
 805
 806 /* If we are referencing a function that is static or is known to be
 807    in this file, make the SYMBOL_REF special.  We can use this to indicate
 808    that we can branch to this function without emitting a no-op after the
 809    call.  For real AIX calling sequences, we also replace the
 810    function name with the real name (1 or 2 leading .'s), rather than
 811    the function descriptor name.  This saves a lot of overriding code
 812    to read the prefixes.  */
 813
 814 #undef  ENCODE_SECTION_INFO
 815 #define ENCODE_SECTION_INFO(DECL, FIRST) \
 816   rs6000_encode_section_info (DECL, FIRST)
 817
 818 /* The ELF version doesn't encode [DS] or whatever at the end of symbols.  */
 819
 820 #define RS6000_OUTPUT_BASENAME(FILE, NAME)      \
 821     assemble_name (FILE, NAME)
 822
 823 /* This macro gets just the user-specified name
 824    out of the string in a SYMBOL_REF.  Discard
 825    a leading * or @.  */
 826 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)                            \
 827 do {                                                                    \
 828   const char *_name = SYMBOL_NAME;                                      \
 829   while (*_name == '*' || *_name == '@')                                \
 830     _name++;                                                            \
 831   (VAR) = _name;                                                        \
 832 } while (0)
 833
 834 /* This is how to output a reference to a user-level label named NAME.
 835    `assemble_name' uses this.  */
 836
 837 /* Override elfos.h definition.  */
 838 #undef  ASM_OUTPUT_LABELREF
 839 #define ASM_OUTPUT_LABELREF(FILE,NAME)          \
 840 do {                                            \
 841   const char *_name = NAME;                     \
 842   if (*_name == '@')                            \
 843     _name++;                                    \
 844                                                 \
 845   if (*_name == '*')                            \
 846     fprintf (FILE, "%s", _name + 1);            \
 847   else                                          \
 848     asm_fprintf (FILE, "%U%s", _name);          \
 849 } while (0)
 850
 851 /* But, to make this work, we have to output the stabs for the function
 852    name *first*...  */
 853
 854 #define DBX_FUNCTION_FIRST
 855
 856 /* This is the end of what might become sysv4dbx.h.  */
 857
 858 #ifndef TARGET_VERSION
 859 #define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");
 860 #endif
 861 \f
 862 #ifndef CPP_PREDEFINES
 863 #define CPP_PREDEFINES \
 864   "-DPPC -Dunix -D__svr4__ -Asystem=unix -Asystem=svr4 -Acpu=powerpc -Amachine=powerpc"
 865 #endif
 866
 867 /* Pass various options to the assembler.  */
 868 /* Override svr4.h definition.  */
 869 #undef  ASM_SPEC
 870 #define ASM_SPEC "%(asm_cpu) \
 871 %{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
 872 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
 873 %{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
 874 %{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
 875 %{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
 876 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 877     %{mcall-freebsd: -mbig} \
 878     %{mcall-i960-old: -mlittle} \
 879     %{mcall-linux: -mbig} \
 880     %{mcall-gnu: -mbig} \
 881     %{mcall-netbsd: -mbig} \
 882 }}}}"
 883
 884 #define CC1_ENDIAN_BIG_SPEC ""
 885
 886 #define CC1_ENDIAN_LITTLE_SPEC "\
 887 %{!mstrict-align: %{!mno-strict-align: \
 888     %{!mcall-i960-old: \
 889         -mstrict-align \
 890     } \
 891 }}"
 892
 893 #define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big)"
 894
 895 /* Pass -G xxx to the compiler and set correct endian mode.  */
 896 #define CC1_SPEC "%{G*} \
 897 %{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
 898 %{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
 899 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 900     %{mcall-aixdesc: -mbig %(cc1_endian_big) } \
 901     %{mcall-freebsd: -mbig %(cc1_endian_big) } \
 902     %{mcall-i960-old: -mlittle %(cc1_endian_little) } \
 903     %{mcall-linux: -mbig %(cc1_endian_big) } \
 904     %{mcall-gnu: -mbig %(cc1_endian_big) } \
 905     %{mcall-netbsd: -mbig %(cc1_endian_big) } \
 906     %{!mcall-aixdesc: %{!mcall-freebsd: %{!mcall-i960-old: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: \
 907             %(cc1_endian_default) \
 908     }}}}}} \
 909 }}}} \
 910 %{mno-sdata: -msdata=none } \
 911 %{meabi: %{!mcall-*: -mcall-sysv }} \
 912 %{!meabi: %{!mno-eabi: \
 913     %{mrelocatable: -meabi } \
 914     %{mcall-freebsd: -mno-eabi } \
 915     %{mcall-i960-old: -meabi } \
 916     %{mcall-linux: -mno-eabi } \
 917     %{mcall-gnu: -mno-eabi } \
 918     %{mcall-netbsd: -mno-eabi }}} \
 919 %{msdata: -msdata=default} \
 920 %{mno-sdata: -msdata=none} \
 921 %{profile: -p}"
 922
 923 /* Don't put -Y P,<path> for cross compilers.  */
 924 #ifndef CROSS_COMPILE
 925 #define LINK_PATH_SPEC "\
 926 %{!R*:%{L*:-R %*}} \
 927 %{!nostdlib: %{!YP,*: \
 928     %{compat-bsd: \
 929         %{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 930         %{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
 931         %{!R*: %{!L*: -R /usr/ucblib}} \
 932     %{!compat-bsd: \
 933         %{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
 934         %{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"
 935
 936 #else
 937 #define LINK_PATH_SPEC ""
 938 #endif
 939
 940 /* Default starting address if specified.  */
 941 #define LINK_START_SPEC "\
 942 %{mads: %(link_start_ads) } \
 943 %{myellowknife: %(link_start_yellowknife) } \
 944 %{mmvme: %(link_start_mvme) } \
 945 %{msim: %(link_start_sim) } \
 946 %{mcall-freebsd: %(link_start_freebsd) } \
 947 %{mcall-linux: %(link_start_linux) } \
 948 %{mcall-gnu: %(link_start_gnu) } \
 949 %{mcall-netbsd: %(link_start_netbsd) } \
 950 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-linux: %{!mcall-gnu: \
 951         %{!mcall-netbsd: %{!mcall-freebsd: %(link_start_default) }}}}}}}}"
 952
 953 #define LINK_START_DEFAULT_SPEC ""
 954
 955 /* Override svr4.h definition.  */
 956 #undef  LINK_SPEC
 957 #define LINK_SPEC "\
 958 %{h*} %{v:-V} %{!msdata=none:%{G*}} %{msdata=none:-G0} \
 959 %{YP,*} %{R*} \
 960 %{Qy:} %{!Qn:-Qy} \
 961 %(link_shlib) \
 962 %{!Wl,-T*: %{!T*: %(link_start) }} \
 963 %(link_target) \
 964 %(link_os)"
 965
 966 /* For now, turn off shared libraries by default.  */
 967 #ifndef SHARED_LIB_SUPPORT
 968 #define NO_SHARED_LIB_SUPPORT
 969 #endif
 970
 971 #ifndef NO_SHARED_LIB_SUPPORT
 972 /* Shared libraries are default.  */
 973 #define LINK_SHLIB_SPEC "\
 974 %{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
 975 %{mshlib: } \
 976 %{static:-dn -Bstatic} \
 977 %{shared:-G -dy -z text} \
 978 %{symbolic:-Bsymbolic -G -dy -z text}"
 979
 980 #else
 981 /* Shared libraries are not default.  */
 982 #define LINK_SHLIB_SPEC "\
 983 %{mshlib: %(link_path) } \
 984 %{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
 985 %{static: } \
 986 %{shared:-G -dy -z text %(link_path) } \
 987 %{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
 988 #endif
 989
 990 /* Override the default target of the linker.  */
 991 #define LINK_TARGET_SPEC "\
 992 %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
 993 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
 994     %{mcall-i960-old: --oformat elf32-powerpcle} \
 995   }}}}"
 996
 997 /* Any specific OS flags.  */
 998 #define LINK_OS_SPEC "\
 999 %{mads: %(link_os_ads) } \
1000 %{myellowknife: %(link_os_yellowknife) } \
1001 %{mmvme: %(link_os_mvme) } \
1002 %{msim: %(link_os_sim) } \
1003 %{mcall-freebsd: %(link_os_freebsd) } \
1004 %{mcall-linux: %(link_os_linux) } \
1005 %{mcall-gnu: %(link_os_gnu) } \
1006 %{mcall-netbsd: %(link_os_netbsd) } \
1007 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: %(link_os_default) }}}}}}}}"
1008
1009 #define LINK_OS_DEFAULT_SPEC ""
1010
1011 #define CPP_SYSV_SPEC \
1012 "%{mrelocatable*: -D_RELOCATABLE} \
1013 %{fpic: -D__PIC__=1 -D__pic__=1} \
1014 %{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}} \
1015 %{mlong-double-128: -D__LONG_DOUBLE_128__=1} \
1016 %{!mlong-double-64: %(cpp_longdouble_default)} \
1017 %{mcall-sysv: -D_CALL_SYSV} \
1018 %{mcall-aix: -D_CALL_AIX} %{mcall-aixdesc: -D_CALL_AIX -D_CALL_AIXDESC} \
1019 %{!mcall-sysv: %{!mcall-aix: %{!mcall-aixdesc: %(cpp_sysv_default) }}} \
1020 %{msoft-float: -D_SOFT_FLOAT} \
1021 %{!msoft-float: %{!mhard-float: \
1022     %{mcpu=401: -D_SOFT_FLOAT} \
1023     %{mcpu=403: -D_SOFT_FLOAT} \
1024     %{mcpu=405: -D_SOFT_FLOAT} \
1025     %{mcpu=ec603e: -D_SOFT_FLOAT} \
1026     %{mcpu=801: -D_SOFT_FLOAT} \
1027     %{mcpu=821: -D_SOFT_FLOAT} \
1028     %{mcpu=823: -D_SOFT_FLOAT} \
1029     %{mcpu=860: -D_SOFT_FLOAT} \
1030     %{!mcpu*: %(cpp_float_default) }}}"
1031
1032 /* Whether floating point is disabled by default.  */
1033 #define CPP_FLOAT_DEFAULT_SPEC ""
1034
1035 /* Whether 'long double' is 128 bits by default.  */
1036 #define CPP_LONGDOUBLE_DEFAULT_SPEC ""
1037
1038 #define CPP_SYSV_DEFAULT_SPEC "-D_CALL_SYSV"
1039
1040 #define CPP_ENDIAN_BIG_SPEC "-D_BIG_ENDIAN -D__BIG_ENDIAN__ -Amachine=bigendian"
1041
1042 #define CPP_ENDIAN_LITTLE_SPEC "-D_LITTLE_ENDIAN -D__LITTLE_ENDIAN__ -Amachine=littleendian"
1043
1044 #define CPP_ENDIAN_SPEC \
1045 "%{mlittle: %(cpp_endian_little) } \
1046 %{mlittle-endian: %(cpp_endian_little) } \
1047 %{mbig: %(cpp_endian_big) } \
1048 %{mbig-endian: %(cpp_endian_big) } \
1049 %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
1050     %{mcall-freebsd: %(cpp_endian_big) } \
1051     %{mcall-linux: %(cpp_endian_big) } \
1052     %{mcall-gnu: %(cpp_endian_big) } \
1053     %{mcall-netbsd: %(cpp_endian_big) } \
1054     %{mcall-i960-old: %(cpp_endian_little) } \
1055     %{mcall-aixdesc:  %(cpp_endian_big) } \
1056     %{!mcall-linux: %{!mcall-gnu: %{!mcall-freebsd: %{!mcall-netbsd: %{!mcall-aixdesc: %(cpp_endian_default) }}}}}}}}}"
1057
1058 #define CPP_ENDIAN_DEFAULT_SPEC "%(cpp_endian_big)"
1059
1060 /* Override rs6000.h definition.  */
1061 #undef  CPP_SPEC
1062 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) %(cpp_endian) %(cpp_cpu) \
1063 %{mads: %(cpp_os_ads) } \
1064 %{myellowknife: %(cpp_os_yellowknife) } \
1065 %{mmvme: %(cpp_os_mvme) } \
1066 %{msim: %(cpp_os_sim) } \
1067 %{mcall-freebsd: %(cpp_os_freebsd) } \
1068 %{mcall-linux: %(cpp_os_linux) } \
1069 %{mcall-gnu: %(cpp_os_gnu) } \
1070 %{mcall-netbsd: %(cpp_os_netbsd) } \
1071 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: %(cpp_os_default) }}}}}}}}"
1072
1073 #define CPP_OS_DEFAULT_SPEC ""
1074
1075 /* Override svr4.h definition.  */
1076 #undef  STARTFILE_SPEC
1077 #define STARTFILE_SPEC "\
1078 %{mads: %(startfile_ads) } \
1079 %{myellowknife: %(startfile_yellowknife) } \
1080 %{mmvme: %(startfile_mvme) } \
1081 %{msim: %(startfile_sim) } \
1082 %{mcall-freebsd: %(startfile_freebsd) } \
1083 %{mcall-linux: %(startfile_linux) } \
1084 %{mcall-gnu: %(startfile_gnu) } \
1085 %{mcall-netbsd: %(startfile_netbsd) } \
1086 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: %(startfile_default) }}}}}}}}"
1087
1088 #define STARTFILE_DEFAULT_SPEC ""
1089
1090 /* Override svr4.h definition.  */
1091 #undef  LIB_SPEC
1092 #define LIB_SPEC "\
1093 %{mads: %(lib_ads) } \
1094 %{myellowknife: %(lib_yellowknife) } \
1095 %{mmvme: %(lib_mvme) } \
1096 %{msim: %(lib_sim) } \
1097 %{mcall-freebsd: %(lib_freebsd) } \
1098 %{mcall-linux: %(lib_linux) } \
1099 %{mcall-gnu: %(lib_gnu) } \
1100 %{mcall-netbsd: %(lib_netbsd) } \
1101 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: %(lib_default) }}}}}}}}"
1102
1103 #define LIB_DEFAULT_SPEC ""
1104
1105 /* Override svr4.h definition.  */
1106 #undef  ENDFILE_SPEC
1107 #define ENDFILE_SPEC "crtsavres.o%s \
1108 %{mads: %(endfile_ads)} \
1109 %{myellowknife: %(endfile_yellowknife)} \
1110 %{mmvme: %(endfile_mvme)} \
1111 %{msim: %(endfile_sim)} \
1112 %{mcall-freebsd: %(endfile_freebsd) } \
1113 %{mcall-linux: %(endfile_linux) } \
1114 %{mcall-gnu: %(endfile_gnu) } \
1115 %{mcall-netbsd: %(endfile_netbsd) } \
1116 %{mvxworks: %(endfile_vxworks) } \
1117 %{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-freebsd: %{!mcall-linux: %{!mcall-gnu: %{!mcall-netbsd: %{!mvxworks: %(endfile_default) }}}}}}}}}"
1118
1119 #define ENDFILE_DEFAULT_SPEC ""
1120
1121 /* Motorola ADS support.  */
1122 #define LIB_ADS_SPEC "--start-group -lads -lc --end-group"
1123
1124 #define STARTFILE_ADS_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1125
1126 #define ENDFILE_ADS_SPEC "crtend.o%s ecrtn.o%s"
1127
1128 #define LINK_START_ADS_SPEC "-T ads.ld%s"
1129
1130 #define LINK_OS_ADS_SPEC ""
1131
1132 #define CPP_OS_ADS_SPEC ""
1133
1134 /* Motorola Yellowknife support.  */
1135 #define LIB_YELLOWKNIFE_SPEC "--start-group -lyk -lc --end-group"
1136
1137 #define STARTFILE_YELLOWKNIFE_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1138
1139 #define ENDFILE_YELLOWKNIFE_SPEC "crtend.o%s ecrtn.o%s"
1140
1141 #define LINK_START_YELLOWKNIFE_SPEC "-T yellowknife.ld%s"
1142
1143 #define LINK_OS_YELLOWKNIFE_SPEC ""
1144
1145 #define CPP_OS_YELLOWKNIFE_SPEC ""
1146
1147 /* Motorola MVME support.  */
1148 #define LIB_MVME_SPEC "--start-group -lmvme -lc --end-group"
1149
1150 #define STARTFILE_MVME_SPEC "ecrti.o%s crt0.o%s crtbegin.o%s"
1151
1152 #define ENDFILE_MVME_SPEC "crtend.o%s ecrtn.o%s"
1153
1154 #define LINK_START_MVME_SPEC "-Ttext 0x40000"
1155
1156 #define LINK_OS_MVME_SPEC ""
1157
1158 #define CPP_OS_MVME_SPEC ""
1159
1160 /* PowerPC simulator based on netbsd system calls support.  */
1161 #define LIB_SIM_SPEC "--start-group -lsim -lc --end-group"
1162
1163 #define STARTFILE_SIM_SPEC "ecrti.o%s sim-crt0.o%s crtbegin.o%s"
1164
1165 #define ENDFILE_SIM_SPEC "crtend.o%s ecrtn.o%s"
1166
1167 #define LINK_START_SIM_SPEC ""
1168
1169 #define LINK_OS_SIM_SPEC "-m elf32ppcsim"
1170
1171 #define CPP_OS_SIM_SPEC ""
1172
1173 /* FreeBSD support.  */
1174
1175 #define CPP_OS_FREEBSD_SPEC     "\
1176   -D__PPC__ -D__ppc__ -D__PowerPC__ -D__powerpc__ \
1177   -Acpu=powerpc -Amachine=powerpc"
1178
1179 #define STARTFILE_FREEBSD_SPEC  FBSD_STARTFILE_SPEC
1180 #define ENDFILE_FREEBSD_SPEC    FBSD_ENDFILE_SPEC
1181 #define LIB_FREEBSD_SPEC        FBSD_LIB_SPEC
1182 #define LINK_START_FREEBSD_SPEC ""
1183
1184 #define LINK_OS_FREEBSD_SPEC "\
1185   %{symbolic:-Bsymbolic}"
1186
1187 /* GNU/Linux support.  */
1188 #ifdef USE_GNULIBC_1
1189 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1190 %{!mnewlib: -lc }"
1191 #else
1192 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } \
1193 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1194 %{profile:-lc_p} %{!profile:-lc}}}"
1195 #endif
1196
1197 #ifdef USE_GNULIBC_1
1198 #define STARTFILE_LINUX_SPEC "\
1199 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1200 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1201 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1202 #else
1203 #define STARTFILE_LINUX_SPEC "\
1204 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
1205 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1206 %{static:crtbeginT.o%s} \
1207 %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
1208 #endif
1209
1210 #define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1211 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1212
1213 #define LINK_START_LINUX_SPEC ""
1214
1215 #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1216   %{rdynamic:-export-dynamic} \
1217   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1218
1219 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
1220 # define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
1221 #endif
1222
1223 #ifdef USE_GNULIBC_1
1224 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__               \
1225 %{!undef:                                                       \
1226   %{!ansi:                                                      \
1227     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                 \
1228     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}             \
1229 -Asystem=unix -Asystem=posix"
1230 #else
1231 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__linux__               \
1232 %{!undef:                                                       \
1233   %{!ansi:                                                      \
1234     %{!std=*:-Dunix -D__unix -Dlinux -D__linux}                 \
1235     %{std=gnu*:-Dunix -D__unix -Dlinux -D__linux}}}             \
1236 -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1237 #endif
1238
1239 /* GNU/Hurd support.  */
1240 #define LIB_GNU_SPEC "%{mnewlib: --start-group -lgnu -lc --end-group } \
1241 %{!mnewlib: %{shared:-lc} %{!shared: %{pthread:-lpthread } \
1242 %{profile:-lc_p} %{!profile:-lc}}}"
1243
1244 #define STARTFILE_GNU_SPEC "\
1245 %{!shared: %{!static: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}} \
1246 %{static: %{pg:gcrt0.o%s} %{!pg:%{p:gcrt0.o%s} %{!p:crt0.o%s}}} \
1247 %{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
1248 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1249
1250 #define ENDFILE_GNU_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1251 %{mnewlib: ecrtn.o%s} %{!mnewlib: crtn.o%s}"
1252
1253 #define LINK_START_GNU_SPEC ""
1254
1255 #define LINK_OS_GNU_SPEC "-m elf32ppclinux %{!shared: %{!static: \
1256   %{rdynamic:-export-dynamic} \
1257   %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}}}"
1258
1259 #define CPP_OS_GNU_SPEC "-D__unix__ -D__GNU__   \
1260 %{!undef:                                       \
1261   %{!ansi: -Dunix -D__unix}}                    \
1262 -Asystem=gnu -Asystem=unix -Asystem=posix %{pthread:-D_REENTRANT}"
1263
1264 /* NetBSD support.  */
1265 #define LIB_NETBSD_SPEC "\
1266 %{profile:-lgmon -lc_p} %{!profile:-lc}"
1267
1268 #define STARTFILE_NETBSD_SPEC "\
1269 ncrti.o%s crt0.o%s \
1270 %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
1271
1272 #define ENDFILE_NETBSD_SPEC "\
1273 %{!shared:crtend.o%s} %{shared:crtendS.o%s} \
1274 ncrtn.o%s"
1275
1276 #define LINK_START_NETBSD_SPEC "\
1277 "
1278
1279 #define LINK_OS_NETBSD_SPEC "\
1280 %{!shared: %{!static: \
1281   %{rdynamic:-export-dynamic} \
1282   %{!dynamic-linker:-dynamic-linker /usr/libexec/ld.elf_so}}}"
1283
1284 #define CPP_OS_NETBSD_SPEC "\
1285 -D__powerpc__ -D__NetBSD__ -D__ELF__ -D__KPRINTF_ATTRIBUTE__"
1286
1287 /* VxWorks support.  */
1288 /* VxWorks does all the library stuff itself.  */
1289 #define LIB_VXWORKS_SPEC ""
1290
1291 /* VxWorks provides the functionality of crt0.o and friends itself.  */
1292
1293 #define STARTFILE_VXWORKS_SPEC ""
1294
1295 #define ENDFILE_VXWORKS_SPEC ""
1296
1297 /* Because it uses ld -r, vxworks has no start/end files, nor starting
1298    address.  */
1299
1300 #define LINK_START_VXWORKS_SPEC ""
1301
1302 #define LINK_OS_VXWORKS_SPEC "-r"
1303
1304 #define CPP_OS_VXWORKS_SPEC "\
1305 -DCPU_FAMILY=PPC \
1306 %{!mcpu*: \
1307   %{mpowerpc*: -DCPU=PPC603} \
1308   %{!mno-powerpc: -DCPU=PPC603}} \
1309 %{mcpu=powerpc: -DCPU=PPC603} \
1310 %{mcpu=401: -DCPU=PPC403} \
1311 %{mcpu=403: -DCPU=PPC403} \
1312 %{mcpu=405: -DCPU=PPC405} \
1313 %{mcpu=601: -DCPU=PPC601} \
1314 %{mcpu=602: -DCPU=PPC603} \
1315 %{mcpu=603: -DCPU=PPC603} \
1316 %{mcpu=603e: -DCPU=PPC603} \
1317 %{mcpu=ec603e: -DCPU=PPC603} \
1318 %{mcpu=604: -DCPU=PPC604} \
1319 %{mcpu=604e: -DCPU=PPC604} \
1320 %{mcpu=620: -DCPU=PPC604} \
1321 %{mcpu=740: -DCPU=PPC603} \
1322 %{mcpu=7450: -DCPU=PPC603} \
1323 %{mcpu=750: -DCPU=PPC603} \
1324 %{mcpu=801: -DCPU=PPC603} \
1325 %{mcpu=821: -DCPU=PPC603} \
1326 %{mcpu=823: -DCPU=PPC603} \
1327 %{mcpu=860: -DCPU=PPC603}"
1328
1329 /* Define any extra SPECS that the compiler needs to generate.  */
1330 /* Override rs6000.h definition.  */
1331 #undef  SUBTARGET_EXTRA_SPECS
1332 #define SUBTARGET_EXTRA_SPECS                                           \
1333   { "cpp_sysv",                 CPP_SYSV_SPEC },                        \
1334   { "cpp_sysv_default",         CPP_SYSV_DEFAULT_SPEC },                \
1335   { "cpp_endian_default",       CPP_ENDIAN_DEFAULT_SPEC },              \
1336   { "cpp_endian",               CPP_ENDIAN_SPEC },                      \
1337   { "lib_ads",                  LIB_ADS_SPEC },                         \
1338   { "lib_yellowknife",          LIB_YELLOWKNIFE_SPEC },                 \
1339   { "lib_mvme",                 LIB_MVME_SPEC },                        \
1340   { "lib_sim",                  LIB_SIM_SPEC },                         \
1341   { "lib_freebsd",              LIB_FREEBSD_SPEC },                     \
1342   { "lib_gnu",                  LIB_GNU_SPEC },                         \
1343   { "lib_linux",                LIB_LINUX_SPEC },                       \
1344   { "lib_netbsd",               LIB_NETBSD_SPEC },                      \
1345   { "lib_vxworks",              LIB_VXWORKS_SPEC },                     \
1346   { "lib_default",              LIB_DEFAULT_SPEC },                     \
1347   { "startfile_ads",            STARTFILE_ADS_SPEC },                   \
1348   { "startfile_yellowknife",    STARTFILE_YELLOWKNIFE_SPEC },           \
1349   { "startfile_mvme",           STARTFILE_MVME_SPEC },                  \
1350   { "startfile_sim",            STARTFILE_SIM_SPEC },                   \
1351   { "startfile_freebsd",        STARTFILE_FREEBSD_SPEC },               \
1352   { "startfile_gnu",            STARTFILE_GNU_SPEC },                   \
1353   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
1354   { "startfile_netbsd",         STARTFILE_NETBSD_SPEC },                \
1355   { "startfile_vxworks",        STARTFILE_VXWORKS_SPEC },               \
1356   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
1357   { "endfile_ads",              ENDFILE_ADS_SPEC },                     \
1358   { "endfile_yellowknife",      ENDFILE_YELLOWKNIFE_SPEC },             \
1359   { "endfile_mvme",             ENDFILE_MVME_SPEC },                    \
1360   { "endfile_sim",              ENDFILE_SIM_SPEC },                     \
1361   { "endfile_freebsd",          ENDFILE_FREEBSD_SPEC },                 \
1362   { "endfile_gnu",              ENDFILE_GNU_SPEC },                     \
1363   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
1364   { "endfile_netbsd",           ENDFILE_NETBSD_SPEC },                  \
1365   { "endfile_vxworks",          ENDFILE_VXWORKS_SPEC },                 \
1366   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
1367   { "link_path",                LINK_PATH_SPEC },                       \
1368   { "link_shlib",               LINK_SHLIB_SPEC },                      \
1369   { "link_target",              LINK_TARGET_SPEC },                     \
1370   { "link_start",               LINK_START_SPEC },                      \
1371   { "link_start_ads",           LINK_START_ADS_SPEC },                  \
1372   { "link_start_yellowknife",   LINK_START_YELLOWKNIFE_SPEC },          \
1373   { "link_start_mvme",          LINK_START_MVME_SPEC },                 \
1374   { "link_start_sim",           LINK_START_SIM_SPEC },                  \
1375   { "link_start_freebsd",       LINK_START_FREEBSD_SPEC },              \
1376   { "link_start_gnu",           LINK_START_GNU_SPEC },                  \
1377   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
1378   { "link_start_netbsd",        LINK_START_NETBSD_SPEC },               \
1379   { "link_start_vxworks",       LINK_START_VXWORKS_SPEC },              \
1380   { "link_start_default",       LINK_START_DEFAULT_SPEC },              \
1381   { "link_os",                  LINK_OS_SPEC },                         \
1382   { "link_os_ads",              LINK_OS_ADS_SPEC },                     \
1383   { "link_os_yellowknife",      LINK_OS_YELLOWKNIFE_SPEC },             \
1384   { "link_os_mvme",             LINK_OS_MVME_SPEC },                    \
1385   { "link_os_sim",              LINK_OS_SIM_SPEC },                     \
1386   { "link_os_freebsd",          LINK_OS_FREEBSD_SPEC },                 \
1387   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
1388   { "link_os_gnu",              LINK_OS_GNU_SPEC },                     \
1389   { "link_os_netbsd",           LINK_OS_NETBSD_SPEC },                  \
1390   { "link_os_vxworks",          LINK_OS_VXWORKS_SPEC },                 \
1391   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
1392   { "cc1_endian_big",           CC1_ENDIAN_BIG_SPEC },                  \
1393   { "cc1_endian_little",        CC1_ENDIAN_LITTLE_SPEC },               \
1394   { "cc1_endian_default",       CC1_ENDIAN_DEFAULT_SPEC },              \
1395   { "cpp_endian_big",           CPP_ENDIAN_BIG_SPEC },                  \
1396   { "cpp_endian_little",        CPP_ENDIAN_LITTLE_SPEC },               \
1397   { "cpp_float_default",        CPP_FLOAT_DEFAULT_SPEC },               \
1398   { "cpp_longdouble_default",   CPP_LONGDOUBLE_DEFAULT_SPEC },          \
1399   { "cpp_os_ads",               CPP_OS_ADS_SPEC },                      \
1400   { "cpp_os_yellowknife",       CPP_OS_YELLOWKNIFE_SPEC },              \
1401   { "cpp_os_mvme",              CPP_OS_MVME_SPEC },                     \
1402   { "cpp_os_sim",               CPP_OS_SIM_SPEC },                      \
1403   { "cpp_os_freebsd",           CPP_OS_FREEBSD_SPEC },                  \
1404   { "cpp_os_gnu",               CPP_OS_GNU_SPEC },                      \
1405   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
1406   { "cpp_os_netbsd",            CPP_OS_NETBSD_SPEC },                   \
1407   { "cpp_os_vxworks",           CPP_OS_VXWORKS_SPEC },                  \
1408   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
1409
1410 /* Define this macro as a C expression for the initializer of an
1411    array of string to tell the driver program which options are
1412    defaults for this target and thus do not need to be handled
1413    specially when using `MULTILIB_OPTIONS'.
1414
1415    Do not define this macro if `MULTILIB_OPTIONS' is not defined in
1416    the target makefile fragment or if none of the options listed in
1417    `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
1418
1419 #define MULTILIB_DEFAULTS { "mbig", "mcall-sysv" }
1420
1421 /* Define this macro if the code for function profiling should come
1422    before the function prologue.  Normally, the profiling code comes
1423    after.  */
1424 #define PROFILE_BEFORE_PROLOGUE 1
1425
1426 /* Function name to call to do profiling.  */
1427 #define RS6000_MCOUNT "_mcount"
1428
1429 /* Define this macro (to a value of 1) if you want to support the
1430    Win32 style pragmas #pragma pack(push,<n>)' and #pragma
1431    pack(pop)'.  The pack(push,<n>) pragma specifies the maximum
1432    alignment (in bytes) of fields within a structure, in much the
1433    same way as the __aligned__' and __packed__' __attribute__'s
1434    do.  A pack value of zero resets the behaviour to the default.
1435    Successive invocations of this pragma cause the previous values to
1436    be stacked, so that invocations of #pragma pack(pop)' will return
1437    to the previous value.  */
1438
1439 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
1440
1441 /* Define library calls for quad FP operations.  These are all part of the
1442    PowerPC 32bit ABI.  */
1443 #define ADDTF3_LIBCALL "_q_add"
1444 #define DIVTF3_LIBCALL "_q_div"
1445 #define EXTENDDFTF2_LIBCALL "_q_dtoq"
1446 #define EQTF2_LIBCALL "_q_feq"
1447 #define GETF2_LIBCALL "_q_fge"
1448 #define GTTF2_LIBCALL "_q_fgt"
1449 #define LETF2_LIBCALL "_q_fle"
1450 #define LTTF2_LIBCALL "_q_flt"
1451 #define NETF2_LIBCALL "_q_fne"
1452 #define FLOATSITF2_LIBCALL "_q_itoq"
1453 #define MULTF3_LIBCALL "_q_mul"
1454 #define NEGTF2_LIBCALL "_q_neg"
1455 #define TRUNCTFDF2_LIBCALL "_q_qtod"
1456 #define FIX_TRUNCTFSI2_LIBCALL "_q_qtoi"
1457 #define TRUNCTFSF2_LIBCALL "_q_qtos"
1458 #define FIXUNS_TRUNCTFSI2_LIBCALL "_q_qtou"
1459 #define SQRTTF_LIBCALL "_q_sqrt"
1460 #define EXTENDSFTF2_LIBCALL "_q_stoq"
1461 #define SUBTF3_LIBCALL "_q_sub"
1462 #define FLOATUNSSITF2_LIBCALL "_q_utoq"
1463
1464 #define INIT_TARGET_OPTABS                                              \
1465   do {                                                                  \
1466     if (TARGET_HARD_FLOAT)                                              \
1467       {                                                                 \
1468         add_optab->handlers[(int) TFmode].libfunc                       \
1469           = init_one_libfunc (ADDTF3_LIBCALL);                          \
1470         sub_optab->handlers[(int) TFmode].libfunc                       \
1471           = init_one_libfunc (SUBTF3_LIBCALL);                          \
1472         neg_optab->handlers[(int) TFmode].libfunc                       \
1473           = init_one_libfunc (NEGTF2_LIBCALL);                          \
1474         smul_optab->handlers[(int) TFmode].libfunc                      \
1475           = init_one_libfunc (MULTF3_LIBCALL);                          \
1476         sdiv_optab->handlers[(int) TFmode].libfunc                      \
1477           = init_one_libfunc (DIVTF3_LIBCALL);                          \
1478         eqtf2_libfunc = init_one_libfunc (EQTF2_LIBCALL);               \
1479         netf2_libfunc = init_one_libfunc (NETF2_LIBCALL);               \
1480         gttf2_libfunc = init_one_libfunc (GTTF2_LIBCALL);               \
1481         getf2_libfunc = init_one_libfunc (GETF2_LIBCALL);               \
1482         lttf2_libfunc = init_one_libfunc (LTTF2_LIBCALL);               \
1483         letf2_libfunc = init_one_libfunc (LETF2_LIBCALL);               \
1484         trunctfsf2_libfunc = init_one_libfunc (TRUNCTFSF2_LIBCALL);     \
1485         trunctfdf2_libfunc = init_one_libfunc (TRUNCTFDF2_LIBCALL);     \
1486         extendsftf2_libfunc = init_one_libfunc (EXTENDSFTF2_LIBCALL);   \
1487         extenddftf2_libfunc = init_one_libfunc (EXTENDDFTF2_LIBCALL);   \
1488         floatsitf_libfunc = init_one_libfunc (FLOATSITF2_LIBCALL);      \
1489         fixtfsi_libfunc = init_one_libfunc (FIX_TRUNCTFSI2_LIBCALL);    \
1490         fixunstfsi_libfunc                                              \
1491           = init_one_libfunc (FIXUNS_TRUNCTFSI2_LIBCALL);               \
1492         if (TARGET_PPC_GPOPT || TARGET_POWER2)                          \
1493           sqrt_optab->handlers[(int) TFmode].libfunc                    \
1494             = init_one_libfunc (SQRTTF_LIBCALL);                        \
1495       }                                                                 \
1496   } while (0)
1497
1498 /* Select a format to encode pointers in exception handling data.  CODE
1499    is 0 for data, 1 for code labels, 2 for function pointers.  GLOBAL is
1500    true if the symbol may be affected by dynamic relocations.  */
1501 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)                            \
1502   ((flag_pic || TARGET_RELOCATABLE)                                          \
1503    ? (((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4) \
1504    : DW_EH_PE_absptr)
1505
1506 #define TARGET_ASM_EXCEPTION_SECTION readonly_data_section
1507
1508 #define DOUBLE_INT_ASM_OP "\t.quad\t"
1509
1510 /* Generate entries in .fixup for relocatable addresses.  */
1511 #define RELOCATABLE_NEEDS_FIXUP