gcc/config/pa/pa64-hpux.h

   1 /* Definitions of target machine for GNU compiler, for HPs running
   2    HPUX using the 64bit runtime model.
   3    Copyright (C) 1999-2013 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 /* We can debug dynamically linked executables on hpux11; we also
  22    want dereferencing of a NULL pointer to cause a SEGV.  Do not move
  23    the "+Accept TypeMismatch" switch.  We check for it in collect2
  24    to determine which init/fini is needed.  */
  25 #undef LINK_SPEC
  26 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
  27 #define LINK_SPEC \
  28   "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  29      %nwarning: consider linking with '-static' as system libraries with\n\
  30      %n  profiling support are only provided in archive format}}}\
  31    %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  32      %nwarning: consider linking with '-static' as system libraries with\n\
  33      %n  profiling support are only provided in archive format}}}\
  34    %{!shared:%{!static:%{rdynamic:-E}}}\
  35    %{mhp-ld:+Accept TypeMismatch -z} %{mlinker-opt:-O}\
  36    %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
  37    %{static:-a archive} %{shared:%{mhp-ld:-b}%{!mhp-ld:-shared}}"
  38 #else
  39 #define LINK_SPEC \
  40   "%{!shared:%{p:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  41      %nwarning: consider linking with '-static' as system libraries with\n\
  42      %n  profiling support are only provided in archive format}}}\
  43    %{!shared:%{pg:-L/lib/pa20_64/libp -L/usr/lib/pa20_64/libp %{!static:\
  44      %nwarning: consider linking with '-static' as system libraries with\n\
  45      %n  profiling support are only provided in archive format}}}\
  46    %{!shared:%{!static:%{rdynamic:-E}}}\
  47    %{!mgnu-ld:+Accept TypeMismatch -z} %{mlinker-opt:-O}\
  48    %{!shared:-u main %{!nostdlib:%{!nodefaultlibs:-u __cxa_finalize}}}\
  49    %{static:-a archive} %{shared:%{mgnu-ld:-shared}%{!mgnu-ld:-b}}"
  50 #endif
  51
  52 /* Profiling support is only provided in libc.a.  However, libprof and
  53    libgprof are only available in shared form on HP-UX 11.00.  We use
  54    the shared form if we are using the GNU linker or an archive form
  55    isn't available.  We also usually need to link with libdld and it's
  56    only available in shared form.  */
  57 #undef LIB_SPEC
  58 #if ((TARGET_DEFAULT | TARGET_CPU_DEFAULT) & MASK_GNU_LD)
  59 #define LIB_SPEC \
  60   "%{!shared:\
  61      %{!p:%{!pg:%{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  62             %{mt|pthread:-lpthread} -lc\
  63             %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  64                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  65      %{p:%{!pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
  66            -lprof %{static:-a archive}\
  67            %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  68            %{mt|pthread:-lpthread} -lc\
  69            %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  70                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  71      %{pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\
  72        -lgprof %{static:-a archive}\
  73        %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  74        %{mt|pthread:-lpthread} -lc\
  75        %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  76                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  77    %{shared:%{mt|pthread:-lpthread}}"
  78 #else
  79 #define LIB_SPEC \
  80   "%{!shared:\
  81      %{!p:%{!pg:%{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  82             %{mt|pthread:-lpthread} -lc\
  83             %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  84                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  85      %{p:%{!pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
  86            -lprof %{static:-a archive}\
  87            %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  88            %{mt|pthread:-lpthread} -lc\
  89            %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  90                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  91      %{pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\
  92        -lgprof %{static:-a archive}\
  93        %{fopenmp:%{static:-a shared} -lrt %{static:-a archive}}\
  94        %{mt|pthread:-lpthread} -lc\
  95        %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\
  96                 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\
  97    %{shared:%{mt|pthread:-lpthread}}"
  98 #endif
  99
 100 /* The libgcc_stub.a and milli.a libraries need to come last.  */
 101 #undef LINK_GCC_C_SEQUENCE_SPEC
 102 #define LINK_GCC_C_SEQUENCE_SPEC "\
 103   %G %L %G %{!nostdlib:%{!nodefaultlibs:%{!shared:-lgcc_stub}\
 104   milli.a%s}}"
 105
 106 /* Under hpux11, the normal location of the `ld' and `as' programs is the
 107    /usr/ccs/bin directory.  */
 108
 109 #ifndef CROSS_DIRECTORY_STRUCTURE
 110 #undef MD_EXEC_PREFIX
 111 #define MD_EXEC_PREFIX "/usr/ccs/bin"
 112 #endif
 113
 114 /* Default prefixes.  */
 115
 116 #undef STANDARD_STARTFILE_PREFIX_1
 117 #define STANDARD_STARTFILE_PREFIX_1 "/lib/pa20_64/"
 118
 119 #undef STANDARD_STARTFILE_PREFIX_2
 120 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/pa20_64/"
 121
 122 /* Under hpux11 the normal location of the various pa20_64 *crt*.o files
 123    is the /usr/ccs/lib/pa20_64 directory.  Some files may also be in the
 124    /opt/langtools/lib/pa20_64 directory.  */
 125
 126 #ifndef CROSS_DIRECTORY_STRUCTURE
 127 #undef MD_STARTFILE_PREFIX
 128 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/pa20_64/"
 129 #endif
 130
 131 #ifndef CROSS_DIRECTORY_STRUCTURE
 132 #undef MD_STARTFILE_PREFIX_1
 133 #define MD_STARTFILE_PREFIX_1 "/opt/langtools/lib/pa20_64/"
 134 #endif
 135
 136 /* This macro specifies the biggest alignment supported by the object
 137    file format of this machine.
 138
 139    The .align directive in the HP assembler allows alignments up to
 140    4096 bytes.  However, the maximum alignment of a global common symbol
 141    is 16 bytes using HP ld.  Unfortunately, this macro doesn't provide
 142    a method to check for common symbols.  */
 143 #undef MAX_OFILE_ALIGNMENT
 144 #define MAX_OFILE_ALIGNMENT 32768
 145
 146 /* Due to limitations in the target structure, it isn't currently possible
 147    to dynamically switch between the GNU and HP assemblers.  */
 148 #undef TARGET_GAS
 149
 150 /* Configure selects the standard ELFOS defines for use with GAS.  */
 151 #ifdef USING_ELFOS_H
 152
 153 /* We are using GAS.  */
 154 #define TARGET_GAS 1
 155
 156 #undef TARGET_ASM_FILE_START
 157 #define TARGET_ASM_FILE_START pa_hpux64_gas_file_start
 158
 159 /* This is how we output a null terminated string.  */
 160 #undef STRING_ASM_OP
 161 #define STRING_ASM_OP   "\t.stringz\t"
 162
 163 #define TEXT_SECTION_ASM_OP     "\t.text"
 164 #define DATA_SECTION_ASM_OP     "\t.data"
 165 #define BSS_SECTION_ASM_OP      "\t.section\t.bss"
 166
 167 #define JCR_SECTION_NAME        ".jcr"
 168
 169 #define HP_INIT_ARRAY_SECTION_ASM_OP    "\t.section\t.init"
 170 #define GNU_INIT_ARRAY_SECTION_ASM_OP   "\t.section\t.init_array"
 171 #define HP_FINI_ARRAY_SECTION_ASM_OP    "\t.section\t.fini"
 172 #define GNU_FINI_ARRAY_SECTION_ASM_OP   "\t.section\t.fini_array"
 173
 174 /* We need to override the following two macros defined in elfos.h since
 175    the .comm directive has a different syntax and it can't be used for
 176    local common symbols.  */
 177 #undef ASM_OUTPUT_ALIGNED_COMMON
 178 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
 179   pa_asm_output_aligned_common (FILE, NAME, SIZE, ALIGN)
 180
 181 #undef ASM_OUTPUT_ALIGNED_LOCAL
 182 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 183   pa_asm_output_aligned_local (FILE, NAME, SIZE, ALIGN)
 184
 185 /* The define in pa.h doesn't work with the alias attribute.  The
 186    default is ok with the following define for GLOBAL_ASM_OP.  */
 187 #undef TARGET_ASM_GLOBALIZE_LABEL
 188
 189 /* This is how we globalize a label.  */
 190 #define GLOBAL_ASM_OP   "\t.globl\t"
 191
 192 /* Hacked version from defaults.h that uses assemble_name_raw
 193    instead of assemble_name.  A symbol in a type directive that
 194    isn't otherwise referenced doesn't cause the symbol to be
 195    placed in the symbol table of the assembled object.  */
 196 #undef ASM_OUTPUT_TYPE_DIRECTIVE
 197 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)           \
 198 do {                                                            \
 199   fputs (TYPE_ASM_OP, STREAM);                                  \
 200   assemble_name_raw (STREAM, NAME);                             \
 201   fputs (", ", STREAM);                                         \
 202   fprintf (STREAM, TYPE_OPERAND_FMT, TYPE);                     \
 203   putc ('\n', STREAM);                                          \
 204 } while (0)
 205
 206 /* Hacked version from elfos.h that doesn't output a label.  */
 207 #undef ASM_DECLARE_FUNCTION_NAME
 208 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 209 do {                                                            \
 210   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");           \
 211   ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));                \
 212 } while (0)
 213
 214 /* The type of external references must be set correctly for the
 215    dynamic loader to work correctly.  This is equivalent to the
 216    HP assembler's .IMPORT directive but relates more directly to
 217    ELF object file types.  */
 218 #undef ASM_OUTPUT_EXTERNAL
 219 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                   \
 220   pa_hpux_asm_output_external ((FILE), (DECL), (NAME))
 221 #define ASM_OUTPUT_EXTERNAL_REAL(FILE, DECL, NAME)              \
 222 do {                                                            \
 223   if (FUNCTION_NAME_P (NAME))                                   \
 224     ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");         \
 225   else                                                          \
 226     ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");           \
 227   default_elf_asm_output_external (FILE, DECL, NAME);           \
 228 } while (0)
 229
 230 /* We need set the type for external libcalls.  Also note that not all
 231    libcall names are passed to targetm.encode_section_info (e.g., __main).
 232    Thus, we also have to do the section encoding if it hasn't been done
 233    already.  */
 234 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 235 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 236 do {                                                            \
 237   if (!FUNCTION_NAME_P (XSTR (FUN, 0)))                         \
 238     pa_encode_label (FUN);                                      \
 239   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 240 } while (0)
 241
 242 /* We need to use the HP style for internal labels.  */
 243 #undef ASM_GENERATE_INTERNAL_LABEL
 244 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
 245   sprintf (LABEL, "*%c$%s%04ld", (PREFIX)[0], (PREFIX) + 1, (long)(NUM))
 246
 247 #else /* USING_ELFOS_H */
 248
 249 /* We are not using GAS.  */
 250 #define TARGET_GAS 0
 251
 252 /* HPUX 11 has the "new" HP assembler.  It's still lousy, but it's a whole
 253    lot better than the assembler shipped with older versions of hpux.
 254    However, it doesn't support weak symbols and is a bad fit with ELF.  */
 255 #undef NEW_HP_ASSEMBLER
 256 #define NEW_HP_ASSEMBLER 1
 257
 258 /* It looks like DWARF2 will be the easiest debug format to handle on this
 259    platform.  */
 260 #define DWARF2_DEBUGGING_INFO 1
 261 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 262
 263 /* This target uses the ELF object file format.  */
 264 #define OBJECT_FORMAT_ELF
 265
 266 #undef TARGET_ASM_FILE_START
 267 #define TARGET_ASM_FILE_START pa_hpux64_hpas_file_start
 268
 269 #undef TEXT_SECTION_ASM_OP
 270 #define TEXT_SECTION_ASM_OP             "\t.SUBSPA $CODE$\n"
 271 #undef READONLY_DATA_SECTION_ASM_OP
 272 #define READONLY_DATA_SECTION_ASM_OP    "\t.SUBSPA $LIT$\n"
 273 #undef DATA_SECTION_ASM_OP
 274 #define DATA_SECTION_ASM_OP             "\t.SUBSPA $DATA$\n"
 275 #undef BSS_SECTION_ASM_OP
 276 #define BSS_SECTION_ASM_OP              "\t.SUBSPA $BSS$\n"
 277
 278 /* We provide explicit defines for CTORS_SECTION_ASM_OP and
 279    DTORS_SECTION_ASM_OP since we don't yet have support for
 280    named sections with the HP assembler.  */
 281 #undef CTORS_SECTION_ASM_OP
 282 #define CTORS_SECTION_ASM_OP "\t.SUBSPA \\.ctors,QUAD=1,ALIGN=8,ACCESS=31"
 283 #undef DTORS_SECTION_ASM_OP
 284 #define DTORS_SECTION_ASM_OP "\t.SUBSPA \\.dtors,QUAD=1,ALIGN=8,ACCESS=31"
 285
 286 #define HP_INIT_ARRAY_SECTION_ASM_OP \
 287   "\t.SUBSPA \\.init,QUAD=1,ALIGN=8,ACCESS=31"
 288 #define GNU_INIT_ARRAY_SECTION_ASM_OP \
 289   "\t.SUBSPA \\.init_array,QUAD=1,ALIGN=8,ACCESS=31"
 290 #define HP_FINI_ARRAY_SECTION_ASM_OP \
 291   "\t.SUBSPA \\.fini,QUAD=1,ALIGN=8,ACCESS=31"
 292 #define GNU_FINI_ARRAY_SECTION_ASM_OP \
 293   "\t.SUBSPA \\.fini_array,QUAD=1,ALIGN=8,ACCESS=31"
 294
 295 #endif /* USING_ELFOS_H */
 296
 297 /* The following defines, used to run constructors and destructors with
 298    the SOM linker under HP-UX 11, are not needed.  */
 299 #undef HAS_INIT_SECTION
 300 #undef LD_INIT_SWITCH
 301 #undef LD_FINI_SWITCH
 302
 303 /* The following STARTFILE_SPEC and ENDFILE_SPEC defines provide the
 304    magic needed to run initializers and finalizers.  */
 305 #undef STARTFILE_SPEC
 306 #if TARGET_HPUX_11_31
 307 #define STARTFILE_SPEC \
 308   "%{!shared: %{!symbolic: crt0%O%s} \
 309      %{munix=95:unix95.o%s} %{munix=98:unix98.o%s} \
 310      %{!munix=93:%{!munix=95:%{!munix=98:unix2003%O%s}}}} \
 311      %{static:crtbeginT%O%s} \
 312    %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
 313 #elif TARGET_HPUX_11_11
 314 #define STARTFILE_SPEC \
 315   "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95.o%s} \
 316      %{!munix=93:%{!munix=95:unix98%O%s}}} %{static:crtbeginT%O%s} \
 317    %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}"
 318 #else
 319 #define STARTFILE_SPEC \
 320   "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95%O%s}} \
 321    %{static:crtbeginT%O%s} %{!static:%{!shared:crtbegin%O%s} \
 322    %{shared:crtbeginS%O%s}}"
 323 #endif
 324 #undef ENDFILE_SPEC
 325 #define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}"
 326
 327 /* Since HP uses the .init and .fini sections for array initializers
 328    and finalizers, we need different defines for INIT_SECTION_ASM_OP
 329    and FINI_SECTION_ASM_OP.  With the implementation adopted below,
 330    the sections are not actually used.  However, we still must provide
 331    defines to select the proper code path.  */
 332 #undef INIT_SECTION_ASM_OP
 333 #define INIT_SECTION_ASM_OP
 334 #undef FINI_SECTION_ASM_OP
 335 #define FINI_SECTION_ASM_OP
 336
 337 /* We are using array initializers and don't want calls in the INIT
 338    and FINI sections.  */
 339 #undef CRT_CALL_STATIC_FUNCTION
 340 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)
 341
 342 /* The init_priority attribute is not supported with HP ld.  This could be
 343    supported if collect2 was used with LD_INIT_SWITCH.  Unfortunately, this
 344    approach doesn't work with GNU ld since HP-UX doesn't support DT_INIT,
 345    and therefore the -init and -fini GNU ld switches.  */
 346 #undef SUPPORTS_INIT_PRIORITY
 347 #define SUPPORTS_INIT_PRIORITY (TARGET_GNU_LD ? 1 : 0)
 348
 349 /* We use DTOR_LIST_BEGIN to carry a bunch of hacks to allow us to use
 350    the init and fini array sections with both the HP and GNU linkers.
 351    The linkers setup the required dynamic entries in the dynamic segment
 352    and the dynamic linker does the calls.  This approach avoids using
 353    collect2.
 354
 355    The first hack is to implement __do_global_ctors_aux in crtbegin as
 356    it needs to be the first entry in the init array so that it is called
 357    last.  HP got the order of the init array backwards.  The DT_INIT_ARRAY
 358    is supposed to be executed in the same order as the addresses appear in
 359    the array.  DT_FINI_ARRAY is supposed to be executed in the opposite
 360    order.
 361
 362    The second hack is a set of plabels to implement the effect of
 363    CRT_CALL_STATIC_FUNCTION.  HP-UX 11 only supports DI_INIT_ARRAY and
 364    DT_FINI_ARRAY and they put the arrays in .init and .fini, rather than
 365    in .init_array and .fini_array.  The standard defines for .init and
 366    .fini have the execute flag set.  So, the assembler has to be hacked
 367    to munge the standard flags for these sections to make them agree
 368    with what the HP linker expects.  With the GNU linker, we need to
 369    used the .init_array and .fini_array sections.  So, we set up for
 370    both just in case.  Once we have built the table, the linker does
 371    the rest of the work.
 372
 373    The order is significant.  Placing __do_global_ctors_aux first in
 374    the list, results in it being called last.  User specified initializers,
 375    either using the linker +init command or a plabel, run before the
 376    initializers specified here.  */
 377
 378 /* We need to add frame_dummy to the initializer list if EH_FRAME_SECTION_NAME
 379    or JCR_SECTION_NAME is defined.  */
 380 #if defined(EH_FRAME_SECTION_NAME) || defined(JCR_SECTION_NAME)
 381 #define PA_INIT_FRAME_DUMMY_ASM_OP ".dword P%frame_dummy"
 382 #else
 383 #define PA_INIT_FRAME_DUMMY_ASM_OP ""
 384 #endif
 385
 386 /* The following hack sets up the .init, .init_array, .fini and
 387    .fini_array sections.  */
 388 #define PA_CRTBEGIN_HACK \
 389 asm (TEXT_SECTION_ASM_OP);                                              \
 390 static void __attribute__((used))                                       \
 391 __do_global_ctors_aux (void)                                            \
 392 {                                                                       \
 393   func_ptr *p = __CTOR_LIST__;                                          \
 394   while (*(p + 1))                                                      \
 395     p++;                                                                \
 396   for (; *p != (func_ptr) -1; p--)                                      \
 397     (*p) ();                                                            \
 398 }                                                                       \
 399                                                                         \
 400 asm (HP_INIT_ARRAY_SECTION_ASM_OP);                                     \
 401 asm (".align 8");                                                       \
 402 asm (".dword P%__do_global_ctors_aux");                                 \
 403 asm (PA_INIT_FRAME_DUMMY_ASM_OP);                                       \
 404 asm (GNU_INIT_ARRAY_SECTION_ASM_OP);                                    \
 405 asm (".align 8");                                                       \
 406 asm (".dword P%__do_global_ctors_aux");                                 \
 407 asm (PA_INIT_FRAME_DUMMY_ASM_OP);                                       \
 408 asm (HP_FINI_ARRAY_SECTION_ASM_OP);                                     \
 409 asm (".align 8");                                                       \
 410 asm (".dword P%__do_global_dtors_aux");                                 \
 411 asm (GNU_FINI_ARRAY_SECTION_ASM_OP);                                    \
 412 asm (".align 8");                                                       \
 413 asm (".dword P%__do_global_dtors_aux")
 414
 415 /* The following two variants of DTOR_LIST_BEGIN are identical to those
 416    in crtstuff.c except for the addition of the above crtbegin hack.  */
 417 #ifdef DTORS_SECTION_ASM_OP
 418 #define DTOR_LIST_BEGIN \
 419 asm (DTORS_SECTION_ASM_OP);                                             \
 420 STATIC func_ptr __DTOR_LIST__[1]                                        \
 421   __attribute__ ((aligned(sizeof(func_ptr))))                           \
 422   = { (func_ptr) (-1) };                                                \
 423 PA_CRTBEGIN_HACK
 424 #else
 425 #define DTOR_LIST_BEGIN \
 426 STATIC func_ptr __DTOR_LIST__[1]                                        \
 427   __attribute__ ((section(".dtors"), aligned(sizeof(func_ptr))))        \
 428   = { (func_ptr) (-1) };                                                \
 429 PA_CRTBEGIN_HACK
 430 #endif
 431
 432 /* If using HP ld do not call pxdb.  Use size as a program that does nothing
 433    and returns 0.  /bin/true cannot be used because it is a script without
 434    an interpreter.  */
 435 #define INIT_ENVIRONMENT "LD_PXDB=/usr/ccs/bin/size"
 436
 437 /* The HPUX dynamic linker objects to undefined weak symbols, so do
 438    not use them in gthr-posix.h.  */
 439 #define GTHREAD_USE_WEAK 0
 440
 441 /* We don't want undefined weak references to __register_frame_info,
 442    __deregister_frame_info, _Jv_RegisterClasses and __cxa_finalize
 443    introduced by crtbegin.o.  The GNU linker only resolves weak
 444    references if they appear in a shared library.  Thus, it would be
 445    impossible to create a static executable if the symbols were weak.
 446    So, the best solution seems to be to make the symbols strong and
 447    provide an archive library of empty stub functions.  */
 448 #define TARGET_ATTRIBUTE_WEAK