1 /* Definitions of target machine for GNU compiler, for HPs running 2 HPUX using the 64bit runtime model. 3 Copyright (C) 1999-2016 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:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ 62 %{static:-a shared} -lrt %{static:-a archive}}\ 63 %{mt|pthread:-lpthread} -lc\ 64 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\ 65 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\ 66 %{p:%{!pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\ 67 -lprof %{static:-a archive}\ 68 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ 69 %{static:-a shared} -lrt %{static:-a archive}}\ 70 %{mt|pthread:-lpthread} -lc\ 71 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\ 72 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\ 73 %{pg:%{static:%{!mhp-ld:-a shared}%{mhp-ld:-a archive_shared}}\ 74 -lgprof %{static:-a archive}\ 75 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ 76 %{static:-a shared} -lrt %{static:-a archive}}\ 77 %{mt|pthread:-lpthread} -lc\ 78 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\ 79 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\ 80 %{shared:%{mt|pthread:-lpthread}}" 81 #else 82 #define LIB_SPEC \ 83 "%{!shared:\ 84 %{!p:%{!pg:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ 85 %{static:-a shared} -lrt %{static:-a archive}}\ 86 %{mt|pthread:-lpthread} -lc\ 87 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\ 88 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\ 89 %{p:%{!pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\ 90 -lprof %{static:-a archive}\ 91 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ 92 %{static:-a shared} -lrt %{static:-a archive}}\ 93 %{mt|pthread:-lpthread} -lc\ 94 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\ 95 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\ 96 %{pg:%{static:%{mgnu-ld:-a shared}%{!mgnu-ld:-a archive_shared}}\ 97 -lgprof %{static:-a archive}\ 98 %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ 99 %{static:-a shared} -lrt %{static:-a archive}}\ 100 %{mt|pthread:-lpthread} -lc\ 101 %{static:%{!nolibdld:-a shared -ldld -a archive -lc}\ 102 %{!mt:%{!pthread:-a shared -lc -a archive}}}}}\ 103 %{shared:%{mt|pthread:-lpthread}}" 104 #endif 105 106 /* The libgcc_stub.a and milli.a libraries need to come last. */ 107 #undef LINK_GCC_C_SEQUENCE_SPEC 108 #define LINK_GCC_C_SEQUENCE_SPEC "\ 109 %G %L %G %{!nostdlib:%{!nodefaultlibs:%{!shared:-lgcc_stub}\ 110 milli.a%s}}" 111 112 /* Under hpux11, the normal location of the `ld' and `as' programs is the 113 /usr/ccs/bin directory. */ 114 115 #ifndef CROSS_DIRECTORY_STRUCTURE 116 #undef MD_EXEC_PREFIX 117 #define MD_EXEC_PREFIX "/usr/ccs/bin" 118 #endif 119 120 /* Default prefixes. */ 121 122 #undef STANDARD_STARTFILE_PREFIX_1 123 #define STANDARD_STARTFILE_PREFIX_1 "/lib/pa20_64/" 124 125 #undef STANDARD_STARTFILE_PREFIX_2 126 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/pa20_64/" 127 128 /* Under hpux11 the normal location of the various pa20_64 *crt*.o files 129 is the /usr/ccs/lib/pa20_64 directory. Some files may also be in the 130 /opt/langtools/lib/pa20_64 directory. */ 131 132 #ifndef CROSS_DIRECTORY_STRUCTURE 133 #undef MD_STARTFILE_PREFIX 134 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/pa20_64/" 135 #endif 136 137 #ifndef CROSS_DIRECTORY_STRUCTURE 138 #undef MD_STARTFILE_PREFIX_1 139 #define MD_STARTFILE_PREFIX_1 "/opt/langtools/lib/pa20_64/" 140 #endif 141 142 /* This macro specifies the biggest alignment supported by the object 143 file format of this machine. 144 145 The .align directive in the HP assembler allows alignments up to 146 4096 bytes. However, the maximum alignment of a global common symbol 147 is 16 bytes using HP ld. Unfortunately, this macro doesn't provide 148 a method to check for common symbols. */ 149 #undef MAX_OFILE_ALIGNMENT 150 #define MAX_OFILE_ALIGNMENT 32768 151 152 /* Due to limitations in the target structure, it isn't currently possible 153 to dynamically switch between the GNU and HP assemblers. */ 154 #undef TARGET_GAS 155 156 /* Configure selects the standard ELFOS defines for use with GAS. */ 157 #ifdef USING_ELFOS_H 158 159 /* We are using GAS. */ 160 #define TARGET_GAS 1 161 162 #undef TARGET_ASM_FILE_START 163 #define TARGET_ASM_FILE_START pa_hpux64_gas_file_start 164 165 /* This is how we output a null terminated string. */ 166 #undef STRING_ASM_OP 167 #define STRING_ASM_OP "\t.stringz\t" 168 169 #define TEXT_SECTION_ASM_OP "\t.text" 170 #define DATA_SECTION_ASM_OP "\t.data" 171 #define BSS_SECTION_ASM_OP "\t.section\t.bss" 172 173 #define JCR_SECTION_NAME ".jcr" 174 175 #define HP_INIT_ARRAY_SECTION_ASM_OP "\t.section\t.init" 176 #define GNU_INIT_ARRAY_SECTION_ASM_OP "\t.section\t.init_array" 177 #define HP_FINI_ARRAY_SECTION_ASM_OP "\t.section\t.fini" 178 #define GNU_FINI_ARRAY_SECTION_ASM_OP "\t.section\t.fini_array" 179 180 /* We need to override the following two macros defined in elfos.h since 181 the .comm directive has a different syntax and it can't be used for 182 local common symbols. */ 183 #undef ASM_OUTPUT_ALIGNED_COMMON 184 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ 185 pa_asm_output_aligned_common (FILE, NAME, SIZE, ALIGN) 186 187 #undef ASM_OUTPUT_ALIGNED_LOCAL 188 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ 189 pa_asm_output_aligned_local (FILE, NAME, SIZE, ALIGN) 190 191 /* The define in pa.h doesn't work with the alias attribute. The 192 default is ok with the following define for GLOBAL_ASM_OP. */ 193 #undef TARGET_ASM_GLOBALIZE_LABEL 194 195 /* This is how we globalize a label. */ 196 #define GLOBAL_ASM_OP "\t.globl\t" 197 198 /* Hacked version from defaults.h that uses assemble_name_raw 199 instead of assemble_name. A symbol in a type directive that 200 isn't otherwise referenced doesn't cause the symbol to be 201 placed in the symbol table of the assembled object. */ 202 #undef ASM_OUTPUT_TYPE_DIRECTIVE 203 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE) \ 204 do { \ 205 fputs (TYPE_ASM_OP, STREAM); \ 206 assemble_name_raw (STREAM, NAME); \ 207 fputs (", ", STREAM); \ 208 fprintf (STREAM, TYPE_OPERAND_FMT, TYPE); \ 209 putc ('\n', STREAM); \ 210 } while (0) 211 212 /* Hacked version from elfos.h that doesn't output a label. */ 213 #undef ASM_DECLARE_FUNCTION_NAME 214 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ 215 do { \ 216 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \ 217 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ 218 } while (0) 219 220 /* The type of external references must be set correctly for the 221 dynamic loader to work correctly. This is equivalent to the 222 HP assembler's .IMPORT directive but relates more directly to 223 ELF object file types. */ 224 #undef ASM_OUTPUT_EXTERNAL 225 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \ 226 pa_hpux_asm_output_external ((FILE), (DECL), (NAME)) 227 #define ASM_OUTPUT_EXTERNAL_REAL(FILE, DECL, NAME) \ 228 do { \ 229 if (FUNCTION_NAME_P (NAME)) \ 230 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \ 231 else \ 232 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ 233 default_elf_asm_output_external (FILE, DECL, NAME); \ 234 } while (0) 235 236 /* We need set the type for external libcalls. Also note that not all 237 libcall names are passed to targetm.encode_section_info (e.g., __main). 238 Thus, we also have to do the section encoding if it hasn't been done 239 already. */ 240 #undef ASM_OUTPUT_EXTERNAL_LIBCALL 241 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \ 242 do { \ 243 if (!FUNCTION_NAME_P (XSTR (FUN, 0))) \ 244 pa_encode_label (FUN); \ 245 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function"); \ 246 } while (0) 247 248 /* We need to use the HP style for internal labels. */ 249 #undef ASM_GENERATE_INTERNAL_LABEL 250 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ 251 do \ 252 { \ 253 char *__p; \ 254 (LABEL)[0] = '*'; \ 255 (LABEL)[1] = (PREFIX)[0]; \ 256 (LABEL)[2] = '$'; \ 257 __p = stpcpy (&(LABEL)[3], &(PREFIX)[1]); \ 258 sprint_ul (__p, (unsigned long) (NUM)); \ 259 } \ 260 while (0) 261 262 263 #else /* USING_ELFOS_H */ 264 265 /* We are not using GAS. */ 266 #define TARGET_GAS 0 267 268 /* HPUX 11 has the "new" HP assembler. It's still lousy, but it's a whole 269 lot better than the assembler shipped with older versions of hpux. 270 However, it doesn't support weak symbols and is a bad fit with ELF. */ 271 #undef NEW_HP_ASSEMBLER 272 #define NEW_HP_ASSEMBLER 1 273 274 /* It looks like DWARF2 will be the easiest debug format to handle on this 275 platform. */ 276 #define DWARF2_DEBUGGING_INFO 1 277 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 278 279 /* This target uses the ELF object file format. */ 280 #define OBJECT_FORMAT_ELF 281 282 #undef TARGET_ASM_FILE_START 283 #define TARGET_ASM_FILE_START pa_hpux64_hpas_file_start 284 285 #undef TEXT_SECTION_ASM_OP 286 #define TEXT_SECTION_ASM_OP "\t.SUBSPA $CODE$\n" 287 #undef READONLY_DATA_SECTION_ASM_OP 288 #define READONLY_DATA_SECTION_ASM_OP "\t.SUBSPA $LIT$\n" 289 #undef DATA_SECTION_ASM_OP 290 #define DATA_SECTION_ASM_OP "\t.SUBSPA $DATA$\n" 291 #undef BSS_SECTION_ASM_OP 292 #define BSS_SECTION_ASM_OP "\t.SUBSPA $BSS$\n" 293 294 /* We provide explicit defines for CTORS_SECTION_ASM_OP and 295 DTORS_SECTION_ASM_OP since we don't yet have support for 296 named sections with the HP assembler. */ 297 #undef CTORS_SECTION_ASM_OP 298 #define CTORS_SECTION_ASM_OP "\t.SUBSPA \\.ctors,QUAD=1,ALIGN=8,ACCESS=31" 299 #undef DTORS_SECTION_ASM_OP 300 #define DTORS_SECTION_ASM_OP "\t.SUBSPA \\.dtors,QUAD=1,ALIGN=8,ACCESS=31" 301 302 #define HP_INIT_ARRAY_SECTION_ASM_OP \ 303 "\t.SUBSPA \\.init,QUAD=1,ALIGN=8,ACCESS=31" 304 #define GNU_INIT_ARRAY_SECTION_ASM_OP \ 305 "\t.SUBSPA \\.init_array,QUAD=1,ALIGN=8,ACCESS=31" 306 #define HP_FINI_ARRAY_SECTION_ASM_OP \ 307 "\t.SUBSPA \\.fini,QUAD=1,ALIGN=8,ACCESS=31" 308 #define GNU_FINI_ARRAY_SECTION_ASM_OP \ 309 "\t.SUBSPA \\.fini_array,QUAD=1,ALIGN=8,ACCESS=31" 310 311 #endif /* USING_ELFOS_H */ 312 313 /* The following defines, used to run constructors and destructors with 314 the SOM linker under HP-UX 11, are not needed. */ 315 #undef HAS_INIT_SECTION 316 #undef LD_INIT_SWITCH 317 #undef LD_FINI_SWITCH 318 319 /* The following STARTFILE_SPEC and ENDFILE_SPEC defines provide the 320 magic needed to run initializers and finalizers. */ 321 #undef STARTFILE_SPEC 322 #if TARGET_HPUX_11_31 323 #define STARTFILE_SPEC \ 324 "%{!shared: %{!symbolic: crt0%O%s} \ 325 %{munix=95:unix95.o%s} %{munix=98:unix98.o%s} \ 326 %{!munix=93:%{!munix=95:%{!munix=98:unix2003%O%s}}}} \ 327 %{static:crtbeginT%O%s} \ 328 %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}" 329 #elif TARGET_HPUX_11_11 330 #define STARTFILE_SPEC \ 331 "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95.o%s} \ 332 %{!munix=93:%{!munix=95:unix98%O%s}}} %{static:crtbeginT%O%s} \ 333 %{!static:%{!shared:crtbegin%O%s} %{shared:crtbeginS%O%s}}" 334 #else 335 #define STARTFILE_SPEC \ 336 "%{!shared: %{!symbolic: crt0%O%s} %{munix=95:unix95%O%s}} \ 337 %{static:crtbeginT%O%s} %{!static:%{!shared:crtbegin%O%s} \ 338 %{shared:crtbeginS%O%s}}" 339 #endif 340 #undef ENDFILE_SPEC 341 #define ENDFILE_SPEC "%{!shared:crtend%O%s} %{shared:crtendS%O%s}" 342 343 /* Since HP uses the .init and .fini sections for array initializers 344 and finalizers, we need different defines for INIT_SECTION_ASM_OP 345 and FINI_SECTION_ASM_OP. With the implementation adopted below, 346 the sections are not actually used. However, we still must provide 347 defines to select the proper code path. */ 348 #undef INIT_SECTION_ASM_OP 349 #define INIT_SECTION_ASM_OP "" 350 #undef FINI_SECTION_ASM_OP 351 #define FINI_SECTION_ASM_OP 352 353 /* We are using array initializers and don't want calls in the INIT 354 and FINI sections. */ 355 #undef CRT_CALL_STATIC_FUNCTION 356 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) 357 358 /* The init_priority attribute is not supported with HP ld. This could be 359 supported if collect2 was used with LD_INIT_SWITCH. Unfortunately, this 360 approach doesn't work with GNU ld since HP-UX doesn't support DT_INIT, 361 and therefore the -init and -fini GNU ld switches. */ 362 #undef SUPPORTS_INIT_PRIORITY 363 #define SUPPORTS_INIT_PRIORITY (TARGET_GNU_LD ? 1 : 0) 364 365 /* We use DTOR_LIST_BEGIN to carry a bunch of hacks to allow us to use 366 the init and fini array sections with both the HP and GNU linkers. 367 The linkers setup the required dynamic entries in the dynamic segment 368 and the dynamic linker does the calls. This approach avoids using 369 collect2. 370 371 The first hack is to implement __do_global_ctors_aux in crtbegin as 372 it needs to be the first entry in the init array so that it is called 373 last. HP got the order of the init array backwards. The DT_INIT_ARRAY 374 is supposed to be executed in the same order as the addresses appear in 375 the array. DT_FINI_ARRAY is supposed to be executed in the opposite 376 order. 377 378 The second hack is a set of plabels to implement the effect of 379 CRT_CALL_STATIC_FUNCTION. HP-UX 11 only supports DI_INIT_ARRAY and 380 DT_FINI_ARRAY and they put the arrays in .init and .fini, rather than 381 in .init_array and .fini_array. The standard defines for .init and 382 .fini have the execute flag set. So, the assembler has to be hacked 383 to munge the standard flags for these sections to make them agree 384 with what the HP linker expects. With the GNU linker, we need to 385 used the .init_array and .fini_array sections. So, we set up for 386 both just in case. Once we have built the table, the linker does 387 the rest of the work. 388 389 The order is significant. Placing __do_global_ctors_aux first in 390 the list, results in it being called last. User specified initializers, 391 either using the linker +init command or a plabel, run before the 392 initializers specified here. */ 393 394 /* We need to add frame_dummy to the initializer list if EH_FRAME_SECTION_NAME 395 or JCR_SECTION_NAME is defined. */ 396 #if defined(EH_FRAME_SECTION_NAME) || defined(JCR_SECTION_NAME) 397 #define PA_INIT_FRAME_DUMMY_ASM_OP ".dword P%frame_dummy" 398 #else 399 #define PA_INIT_FRAME_DUMMY_ASM_OP "" 400 #endif 401 402 /* The following hack sets up the .init, .init_array, .fini and 403 .fini_array sections. */ 404 #define PA_CRTBEGIN_HACK \ 405 asm (TEXT_SECTION_ASM_OP); \ 406 static void __attribute__((used)) \ 407 __do_global_ctors_aux (void) \ 408 { \ 409 func_ptr *p = __CTOR_LIST__; \ 410 while (*(p + 1)) \ 411 p++; \ 412 for (; *p != (func_ptr) -1; p--) \ 413 (*p) (); \ 414 } \ 415 \ 416 asm (HP_INIT_ARRAY_SECTION_ASM_OP); \ 417 asm (".align 8"); \ 418 asm (".dword P%__do_global_ctors_aux"); \ 419 asm (PA_INIT_FRAME_DUMMY_ASM_OP); \ 420 asm (GNU_INIT_ARRAY_SECTION_ASM_OP); \ 421 asm (".align 8"); \ 422 asm (".dword P%__do_global_ctors_aux"); \ 423 asm (PA_INIT_FRAME_DUMMY_ASM_OP); \ 424 asm (HP_FINI_ARRAY_SECTION_ASM_OP); \ 425 asm (".align 8"); \ 426 asm (".dword P%__do_global_dtors_aux"); \ 427 asm (GNU_FINI_ARRAY_SECTION_ASM_OP); \ 428 asm (".align 8"); \ 429 asm (".dword P%__do_global_dtors_aux") 430 431 /* The following two variants of DTOR_LIST_BEGIN are identical to those 432 in crtstuff.c except for the addition of the above crtbegin hack. */ 433 #ifdef DTORS_SECTION_ASM_OP 434 #define DTOR_LIST_BEGIN \ 435 asm (DTORS_SECTION_ASM_OP); \ 436 STATIC func_ptr __DTOR_LIST__[1] \ 437 __attribute__ ((aligned(sizeof(func_ptr)))) \ 438 = { (func_ptr) (-1) }; \ 439 PA_CRTBEGIN_HACK 440 #else 441 #define DTOR_LIST_BEGIN \ 442 STATIC func_ptr __DTOR_LIST__[1] \ 443 __attribute__ ((section(".dtors"), aligned(sizeof(func_ptr)))) \ 444 = { (func_ptr) (-1) }; \ 445 PA_CRTBEGIN_HACK 446 #endif 447 448 /* If using HP ld do not call pxdb. Use size as a program that does nothing 449 and returns 0. /bin/true cannot be used because it is a script without 450 an interpreter. */ 451 #define INIT_ENVIRONMENT "LD_PXDB=/usr/ccs/bin/size" 452 453 /* The HPUX dynamic linker objects to undefined weak symbols, so do 454 not use them in gthr-posix.h. */ 455 #define GTHREAD_USE_WEAK 0 456 457 /* We don't want undefined weak references to __register_frame_info, 458 __deregister_frame_info, _Jv_RegisterClasses and __cxa_finalize 459 introduced by crtbegin.o. The GNU linker only resolves weak 460 references if they appear in a shared library. Thus, it would be 461 impossible to create a static executable if the symbols were weak. 462 So, the best solution seems to be to make the symbols strong and 463 provide an archive library of empty stub functions. */ 464 #define TARGET_ATTRIBUTE_WEAK 465