contrib/gcc/config/nextstep.h

   1 /* Operating system specific defines to be used when targeting GCC
   2    for NeXTSTEP.
   3    Copyright (C) 1989, 90-93, 1996, 1997 Free Software Foundation, Inc.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC 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 2, or (at your option)
  10 any later version.
  11
  12 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* Use new NeXT include file search path.
  23    In a cross compiler with NeXT as target, don't expect
  24    the host to use Next's directory scheme.  */
  25
  26 #ifndef CROSS_COMPILE
  27 #undef  INCLUDE_DEFAULTS
  28 #define INCLUDE_DEFAULTS                                \
  29   {                                                     \
  30     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },             \
  31     { LOCAL_INCLUDE_DIR, 0, 0, 1 },                     \
  32     { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },             \
  33     { GCC_INCLUDE_DIR, "GCC", 0, 0 },                   \
  34     /* These are for fixincludes-fixed ansi/bsd headers \
  35        which wouldn't be found otherwise.               \
  36        (The use of string catenation here is OK since   \
  37         NeXT's native compiler is derived from GCC.) */ \
  38     { GCC_INCLUDE_DIR "/ansi", 0, 0, 0 },               \
  39     { GCC_INCLUDE_DIR "/bsd", 0, 0, 0 },                \
  40     { "/NextDeveloper/Headers", 0, 0, 0 },              \
  41     { "/NextDeveloper/Headers/ansi", 0, 0, 0 },         \
  42     { "/NextDeveloper/Headers/bsd", 0, 0, 0 },          \
  43     { "/LocalDeveloper/Headers", 0, 0, 0 },             \
  44     { "/LocalDeveloper/Headers/ansi", 0, 0, 0 },        \
  45     { "/LocalDeveloper/Headers/bsd", 0, 0, 0 },         \
  46     { "/NextDeveloper/2.0CompatibleHeaders", 0, 0, 0 }, \
  47     { STANDARD_INCLUDE_DIR, 0, 0, 0 },                  \
  48     { "/usr/include/bsd", 0, 0, 0 },                    \
  49     { 0, 0, 0, 0 }                                      \
  50   }
  51 #else /* CROSS_COMPILE */
  52 #undef  INCLUDE_DEFAULTS
  53 #define INCLUDE_DEFAULTS                                \
  54   {                                                     \
  55     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },             \
  56     { GPLUSPLUS_INCLUDE_DIR, 0, 1, 1 },                 \
  57     { LOCAL_INCLUDE_DIR, 0, 0, 1 },                     \
  58     { GCC_INCLUDE_DIR, "GCC", 0, 0 },                   \
  59     { GCC_INCLUDE_DIR "/ansi", 0, 0, 0 },               \
  60     { GCC_INCLUDE_DIR "/bsd", 0, 0, 0 },                \
  61     { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },             \
  62     { TOOL_INCLUDE_DIR "/ansi", 0, 0, 0 },              \
  63     { TOOL_INCLUDE_DIR "/bsd", 0, 0, 0 },               \
  64     { STANDARD_INCLUDE_DIR, 0, 0, 0 },                  \
  65     { "/usr/include/bsd", 0, 0, 0 },                    \
  66     { 0, 0, 0, 0 }                                      \
  67   }
  68 #endif /* CROSS_COMPILE */
  69
  70 #undef  EXTRA_FORMAT_FUNCTIONS
  71 #define EXTRA_FORMAT_FUNCTIONS \
  72       "NXPrintf",       FALSE,  2,      FALSE,  \
  73       "NXScanf",        TRUE,   2,      FALSE,  \
  74       "NXVPrintf",      FALSE,  2,      TRUE,   \
  75       "NXVScanf",       TRUE,   2,      TRUE,   \
  76       "DPSPrintf",      FALSE,  2,      FALSE,  \
  77       "bsd_sprintf",    FALSE,  2,      FALSE,  \
  78       "bsd_vsprintf",   FALSE,  2,      TRUE,
  79
  80 /* Make -fnext-runtime the default.  */
  81
  82 #define NEXT_OBJC_RUNTIME
  83
  84 /* We have atexit.  */
  85
  86 #define HAVE_ATEXIT
  87
  88 /* Enable recent gcc to compile under the old gcc in Next release 1.0.  */
  89
  90 #define __inline inline
  91
  92 /* wchar_t is unsigned short */
  93
  94 #undef  WCHAR_TYPE
  95 #define WCHAR_TYPE "short unsigned int"
  96 #undef  WCHAR_TYPE_SIZE
  97 #define WCHAR_TYPE_SIZE (BITS_PER_WORD / 2)
  98
  99 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
 100    we want to retain compatibility with older gcc versions.  */
 101
 102 #undef  DEFAULT_PCC_STRUCT_RETURN
 103 #define DEFAULT_PCC_STRUCT_RETURN 0
 104
 105 /* These compiler options take n arguments.  */
 106
 107 #undef  WORD_SWITCH_TAKES_ARG
 108 #define WORD_SWITCH_TAKES_ARG(STR)              \
 109   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
 110    !strcmp (STR, "segalign") ? 1 :              \
 111    !strcmp (STR, "seg1addr") ? 1 :              \
 112    !strcmp (STR, "segaddr") ? 2 :               \
 113    !strcmp (STR, "sectobjectsymbols") ? 2 :     \
 114    !strcmp (STR, "segprot") ? 3 :               \
 115    !strcmp (STR, "sectcreate") ? 3 :            \
 116    !strcmp (STR, "sectalign") ? 3 :             \
 117    !strcmp (STR, "segcreate") ? 3 :             \
 118    !strcmp (STR, "sectorder") ? 3 :             \
 119    !strcmp (STR, "siff-mask") ? 1 :             \
 120    !strcmp (STR, "siff-filter") ? 1 :           \
 121    !strcmp (STR, "siff-warning") ? 1 :          \
 122    !strcmp (STR, "arch") ? 1 :                  \
 123    !strcmp (STR, "pagezero_size") ? 1 :         \
 124    0)
 125
 126 #undef  WORD_SWITCH
 127 #define WORD_SWITCH(STR)                        \
 128   (WORD_SWITCH_TAKES_ARG (STR)                  \
 129    || !strcmp (STR, "bsd")                      \
 130    || !strcmp (STR, "object")                   \
 131    || !strcmp (STR, "ObjC")                     \
 132    || !strcmp (STR, "all_load"))
 133
 134 /* Machine dependent ccp options.  */
 135
 136 #undef  CPP_SPEC
 137 #define CPP_SPEC "%{!traditional: -D__STDC__}            \
 138                   %{posixstrict:-D_POSIX_SOURCE}         \
 139                   %{!posixstrict:%{bsd:-D__STRICT_BSD__} \
 140                   %{posix:-D_POSIX_SOURCE}               \
 141                   %{!ansi:-D_NEXT_SOURCE}}               \
 142                   %{MD:-MD %M} %{MMD:-MMD %M}"
 143
 144 /* Machine dependent ld options.  */
 145
 146 #undef  LINK_SPEC
 147 #define LINK_SPEC "%{Z} %{M} \
 148 %{execute*} %{preload*} %{fvmlib*} \
 149 %{segalign*} %{seg1addr*} %{segaddr*} %{segprot*} \
 150 %{pagezero_size*} \
 151 %{seglinkedit*} %{noseglinkedit*} \
 152 %{sectcreate*} %{sectalign*} %{sectobjectsymbols}\
 153 %{segcreate*} %{Mach*} %{whyload} %{w} \
 154 %{sectorder*} %{whatsloaded} %{ObjC} %{all_load} %{object}"
 155
 156 /* Machine dependent libraries.  */
 157
 158 #undef  LIB_SPEC
 159 #define LIB_SPEC "%{!posix*:-lsys_s} %{posix*:-lposix}"
 160
 161 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
 162
 163 #undef  STARTFILE_SPEC
 164 #define STARTFILE_SPEC  \
 165     "%{!posix*:%{pg:-lgcrt0.o}%{!pg: \
 166      %{p:%e-p profiling is no longer supported.  Use -pg instead.} \
 167      %{!p:-lcrt0.o}}}\
 168      %{posix*:%{pg:-lgposixcrt0.o}%{!pg: \
 169      %{p:%e-p profiling is no longer supported.  Use -pg instead.} \
 170      %{!p:-lposixcrt0.o}}} \
 171      -lcrtbegin.o"
 172
 173 #undef  ENDFILE_SPEC
 174 #define ENDFILE_SPEC \
 175     "-lcrtend.o"
 176
 177 /* Allow #sscs (but don't do anything). */
 178
 179 #define SCCS_DIRECTIVE
 180
 181 /* We use Dbx symbol format.  */
 182
 183 #undef  SDB_DEBUGGING_INFO
 184 #undef  XCOFF_DEBUGGING_INFO
 185 #define DBX_DEBUGGING_INFO
 186
 187 /* This saves a fair amount of space. */
 188
 189 #undef  DBX_CONTIN_LENGTH
 190 #define DBX_CONTIN_LENGTH 0
 191
 192 /* These screw up NeXT's gdb at the moment, so don't use them. */
 193
 194 #undef  DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
 195 #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE, FILENAME)
 196
 197 /* These come from bsd386.h, but are specific to sequent, so make sure
 198    they don't bite us.  */
 199
 200 #undef  DBX_NO_XREFS
 201 #undef  DBX_CONTIN_LENGTH
 202
 203 /* gdb needs a null N_SO at the end of each file for scattered loading. */
 204
 205 #undef  DBX_OUTPUT_MAIN_SOURCE_FILE_END
 206 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
 207   fprintf (FILE,                                                        \
 208            "\t.text\n\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n",         \
 209            "" , N_SO)
 210
 211 /* Define our object format type for crtstuff.c */
 212 #define OBJECT_FORMAT_MACHO
 213
 214 /* Don't use .gcc_compiled symbols to communicate with GDB;
 215    They interfere with numerically sorted symbol lists. */
 216
 217 #undef  ASM_IDENTIFY_GCC
 218 #define ASM_IDENTIFY_GCC(asm_out_file)
 219 #undef  INIT_SECTION_ASM_OP
 220 #define INIT_SECTION_ASM_OP
 221 #undef  INVOKE__main
 222
 223 #undef  ASM_OUTPUT_CONSTRUCTOR
 224 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)                       \
 225   do { constructor_section ();                                  \
 226        ASM_OUTPUT_ALIGN (FILE, 1);                              \
 227        fprintf (FILE, "\t.long ");                              \
 228        assemble_name (FILE, NAME);                              \
 229        fprintf (FILE, "\n");                                    \
 230        fprintf (FILE, ".reference .constructors_used\n");       \
 231       } while (0)
 232
 233 #undef  ASM_OUTPUT_DESTRUCTOR
 234 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)                        \
 235   do { destructor_section ();                                   \
 236        ASM_OUTPUT_ALIGN (FILE, 1);                              \
 237        fprintf (FILE, "\t.long ");                              \
 238        assemble_name (FILE, NAME);                              \
 239        fprintf (FILE, "\n");                                    \
 240        fprintf (FILE, ".reference .destructors_used\n");        \
 241       } while (0)
 242
 243 #define EH_FRAME_SECTION_ASM_OP ".section __TEXT,__eh_frame,regular"
 244
 245 /* Don't output a .file directive.  That is only used by the assembler for
 246    error reporting.  */
 247 #undef  ASM_FILE_START
 248 #define ASM_FILE_START(FILE)
 249
 250 #undef  ASM_FILE_END
 251 #define ASM_FILE_END(FILE)                                      \
 252   do {                                                          \
 253     extern char *language_string;                               \
 254     if (strcmp (language_string, "GNU C++") == 0)               \
 255       {                                                         \
 256         constructor_section ();                                 \
 257         destructor_section ();                                  \
 258         ASM_OUTPUT_ALIGN (FILE, 1);                             \
 259       }                                                         \
 260   } while (0)
 261
 262 /* How to parse #pragma's */
 263
 264 #undef  HANDLE_PRAGMA
 265 #define HANDLE_PRAGMA(GETC, UNGETC, NAME) handle_pragma (GETC, UNGETC, NAME)
 266 extern int handle_pragma ();
 267
 268 /* Give methods pretty symbol names on NeXT. */
 269
 270 #undef  OBJC_GEN_METHOD_LABEL
 271 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 272   do { if (CAT_NAME)                                                    \
 273          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 274                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 275        else                                                             \
 276          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 277                   (CLASS_NAME), (SEL_NAME));                            \
 278      } while (0)
 279
 280 /* The prefix to add to user-visible assembler symbols. */
 281
 282 #undef USER_LABEL_PREFIX
 283 #define USER_LABEL_PREFIX "_"
 284
 285 /* Wrap new method names in quotes so the assembler doesn't gag.
 286    Make Objective-C internal symbols local.  */
 287
 288 #undef  ASM_OUTPUT_LABELREF
 289 #define ASM_OUTPUT_LABELREF(FILE,NAME)  \
 290   do { if (NAME[0] == '+' || NAME[0] == '-') fprintf (FILE, "\"%s\"", NAME); \
 291        else if (!strncmp (NAME, "_OBJC_", 6)) fprintf (FILE, "L%s", NAME);   \
 292        else if (!strncmp (NAME, ".objc_class_name_", 17))               \
 293          fprintf (FILE, "%s", NAME);                                    \
 294        else asm_fprintf (FILE, "%U%s", NAME); } while (0)
 295
 296 #undef  ALIGN_ASM_OP
 297 #define ALIGN_ASM_OP            ".align"
 298
 299 #undef  ASM_OUTPUT_ALIGN
 300 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 301   if ((LOG) != 0)                       \
 302     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 303
 304 /* Ensure correct alignment of bss data.  */
 305
 306 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 307 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
 308 ( fputs (".lcomm ", (FILE)),                            \
 309   assemble_name ((FILE), (NAME)),                       \
 310   fprintf ((FILE), ",%u,%u\n", (SIZE), floor_log2 ((ALIGN) / BITS_PER_UNIT)))
 311
 312 /* Output #ident as a .ident.  */
 313
 314 #undef  ASM_OUTPUT_IDENT
 315 #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
 316
 317 /* The maximum alignment which the object file format can support.
 318    For NeXT's Mach-O format, this is 2^15.  */
 319
 320 #undef  MAX_OFILE_ALIGNMENT
 321 #define MAX_OFILE_ALIGNMENT 0x8000
 322
 323 /* Create new Mach-O sections. */
 324
 325 #undef  SECTION_FUNCTION
 326 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, WAS_TEXT, OBJC)  \
 327 void                                                                    \
 328 FUNCTION ()                                                             \
 329 {                                                                       \
 330   extern void text_section ();                                          \
 331   extern void objc_section_init ();                                     \
 332   extern int flag_no_mach_text_sections;                                \
 333                                                                         \
 334   if (WAS_TEXT && flag_no_mach_text_sections)                           \
 335     text_section ();                                                    \
 336   else if (in_section != SECTION)                                       \
 337     {                                                                   \
 338       if (OBJC)                                                         \
 339         objc_section_init ();                                           \
 340       fprintf (asm_out_file, "%s\n", DIRECTIVE);                        \
 341       in_section = SECTION;                                             \
 342     }                                                                   \
 343 }                                                                       \
 344
 345 #undef  EXTRA_SECTIONS
 346 #define EXTRA_SECTIONS                                  \
 347   in_const, in_cstring, in_literal4, in_literal8,       \
 348   in_constructor, in_destructor,                        \
 349   in_objc_class, in_objc_meta_class, in_objc_category,  \
 350   in_objc_class_vars, in_objc_instance_vars,            \
 351   in_objc_cls_meth, in_objc_inst_meth,                  \
 352   in_objc_cat_cls_meth, in_objc_cat_inst_meth,          \
 353   in_objc_selector_refs,                                \
 354   in_objc_symbols, in_objc_module_info,                 \
 355   in_objc_protocol, in_objc_string_object,              \
 356   in_objc_class_names, in_objc_meth_var_names,          \
 357   in_objc_meth_var_types, in_objc_cls_refs
 358
 359 #undef  EXTRA_SECTION_FUNCTIONS
 360 #define EXTRA_SECTION_FUNCTIONS                 \
 361 SECTION_FUNCTION (const_section,                \
 362                   in_const,                     \
 363                   ".const", 1, 0)               \
 364 SECTION_FUNCTION (cstring_section,              \
 365                   in_cstring,                   \
 366                   ".cstring", 1, 0)             \
 367 SECTION_FUNCTION (literal4_section,             \
 368                   in_literal4,                  \
 369                   ".literal4", 1, 0)            \
 370 SECTION_FUNCTION (literal8_section,             \
 371                   in_literal8,                  \
 372                   ".literal8", 1, 0)            \
 373 SECTION_FUNCTION (constructor_section,          \
 374                   in_constructor,               \
 375                   ".constructor", 0, 0)         \
 376 SECTION_FUNCTION (destructor_section,           \
 377                   in_destructor,                \
 378                   ".destructor", 0, 0)          \
 379 SECTION_FUNCTION (objc_class_section,           \
 380                   in_objc_class,                \
 381                   ".objc_class", 0, 1)          \
 382 SECTION_FUNCTION (objc_meta_class_section,      \
 383                   in_objc_meta_class,           \
 384                   ".objc_meta_class", 0, 1)     \
 385 SECTION_FUNCTION (objc_category_section,        \
 386                   in_objc_category,             \
 387                 ".objc_category", 0, 1)         \
 388 SECTION_FUNCTION (objc_class_vars_section,      \
 389                   in_objc_class_vars,           \
 390                   ".objc_class_vars", 0, 1)     \
 391 SECTION_FUNCTION (objc_instance_vars_section,   \
 392                   in_objc_instance_vars,        \
 393                   ".objc_instance_vars", 0, 1)  \
 394 SECTION_FUNCTION (objc_cls_meth_section,        \
 395                   in_objc_cls_meth,             \
 396                   ".objc_cls_meth", 0, 1)       \
 397 SECTION_FUNCTION (objc_inst_meth_section,       \
 398                   in_objc_inst_meth,            \
 399                   ".objc_inst_meth", 0, 1)      \
 400 SECTION_FUNCTION (objc_cat_cls_meth_section,    \
 401                   in_objc_cat_cls_meth,         \
 402                   ".objc_cat_cls_meth", 0, 1)   \
 403 SECTION_FUNCTION (objc_cat_inst_meth_section,   \
 404                   in_objc_cat_inst_meth,        \
 405                   ".objc_cat_inst_meth", 0, 1)  \
 406 SECTION_FUNCTION (objc_selector_refs_section,   \
 407                   in_objc_selector_refs,        \
 408                   ".objc_message_refs", 0, 1)   \
 409 SECTION_FUNCTION (objc_symbols_section,         \
 410                   in_objc_symbols,              \
 411                   ".objc_symbols", 0, 1)        \
 412 SECTION_FUNCTION (objc_module_info_section,     \
 413                   in_objc_module_info,          \
 414                   ".objc_module_info", 0, 1)    \
 415 SECTION_FUNCTION (objc_protocol_section,        \
 416                   in_objc_protocol,             \
 417                   ".objc_protocol", 0, 1)       \
 418 SECTION_FUNCTION (objc_string_object_section,   \
 419                   in_objc_string_object,        \
 420                   ".objc_string_object", 0, 1)  \
 421 SECTION_FUNCTION (objc_class_names_section,     \
 422                 in_objc_class_names,            \
 423                 ".objc_class_names", 0, 1)      \
 424 SECTION_FUNCTION (objc_meth_var_names_section,  \
 425                 in_objc_meth_var_names,         \
 426                 ".objc_meth_var_names", 0, 1)   \
 427 SECTION_FUNCTION (objc_meth_var_types_section,  \
 428                 in_objc_meth_var_types,         \
 429                 ".objc_meth_var_types", 0, 1)   \
 430 SECTION_FUNCTION (objc_cls_refs_section,        \
 431                 in_objc_cls_refs,               \
 432                 ".objc_cls_refs", 0, 1)         \
 433                                                 \
 434 void                                            \
 435 objc_section_init ()                            \
 436 {                                               \
 437   static int been_here = 0;                     \
 438                                                 \
 439   if (been_here == 0)                           \
 440     {                                           \
 441       been_here = 1;                            \
 442       objc_class_section ();                    \
 443       objc_meta_class_section ();               \
 444       objc_cat_cls_meth_section ();             \
 445       objc_cat_inst_meth_section ();            \
 446       objc_cls_meth_section ();                 \
 447       objc_inst_meth_section ();                \
 448       objc_selector_refs_section ();            \
 449       objc_symbols_section ();                  \
 450       objc_category_section ();                 \
 451       objc_protocol_section ();                 \
 452       objc_class_vars_section ();               \
 453       objc_instance_vars_section ();            \
 454       objc_module_info_section ();              \
 455       objc_string_object_section ();            \
 456       objc_class_names_section ();              \
 457       objc_meth_var_names_section ();           \
 458       objc_meth_var_types_section ();           \
 459       objc_cls_refs_section ();                 \
 460     }                                           \
 461 }
 462
 463 #undef  READONLY_DATA_SECTION
 464 #define READONLY_DATA_SECTION const_section
 465
 466 #undef  SELECT_SECTION
 467 #define SELECT_SECTION(exp,reloc)                               \
 468   do                                                            \
 469     {                                                           \
 470       if (TREE_CODE (exp) == STRING_CST)                        \
 471         {                                                       \
 472           if (flag_writable_strings)                            \
 473             data_section ();                                    \
 474           else if (TREE_STRING_LENGTH (exp) !=                  \
 475                    strlen (TREE_STRING_POINTER (exp)) + 1)      \
 476             readonly_data_section ();                           \
 477           else                                                  \
 478             cstring_section ();                                 \
 479         }                                                       \
 480       else if (TREE_CODE (exp) == INTEGER_CST                   \
 481                || TREE_CODE (exp) == REAL_CST)                  \
 482         {                                                       \
 483           tree size = TYPE_SIZE (TREE_TYPE (exp));              \
 484                                                                 \
 485           if (TREE_CODE (size) == INTEGER_CST &&                \
 486               TREE_INT_CST_LOW (size) == 4 &&                   \
 487               TREE_INT_CST_HIGH (size) == 0)                    \
 488             literal4_section ();                                \
 489           else if (TREE_CODE (size) == INTEGER_CST &&           \
 490               TREE_INT_CST_LOW (size) == 8 &&                   \
 491               TREE_INT_CST_HIGH (size) == 0)                    \
 492             literal8_section ();                                \
 493           else                                                  \
 494             readonly_data_section ();                           \
 495         }                                                       \
 496       else if (TREE_CODE (exp) == CONSTRUCTOR                           \
 497                && TREE_TYPE (exp)                                       \
 498                && TREE_CODE (TREE_TYPE (exp)) == RECORD_TYPE            \
 499                && TYPE_NAME (TREE_TYPE (exp))                           \
 500                && TREE_CODE (TYPE_NAME (TREE_TYPE (exp))) == IDENTIFIER_NODE \
 501                && IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (exp))))     \
 502         {                                                               \
 503           if (!strcmp (IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (exp))), \
 504                         "NXConstantString"))                            \
 505           objc_string_object_section ();                                \
 506         else if ((TREE_READONLY (exp) || TREE_CONSTANT (exp))           \
 507                 && !TREE_SIDE_EFFECTS (exp))                            \
 508           readonly_data_section ();                                     \
 509         else                                                            \
 510           data_section ();                                              \
 511       }                                                                 \
 512       else if (TREE_CODE (exp) == VAR_DECL &&                           \
 513                DECL_NAME (exp) &&                                       \
 514                TREE_CODE (DECL_NAME (exp)) == IDENTIFIER_NODE &&        \
 515                IDENTIFIER_POINTER (DECL_NAME (exp)) &&                  \
 516                !strncmp (IDENTIFIER_POINTER (DECL_NAME (exp)), "_OBJC_", 6)) \
 517         {                                                               \
 518           const char *name = IDENTIFIER_POINTER (DECL_NAME (exp));      \
 519                                                                         \
 520           if (!strncmp (name, "_OBJC_CLASS_METHODS_", 20))              \
 521             objc_cls_meth_section ();                                   \
 522           else if (!strncmp (name, "_OBJC_INSTANCE_METHODS_", 23))      \
 523             objc_inst_meth_section ();                                  \
 524           else if (!strncmp (name, "_OBJC_CATEGORY_CLASS_METHODS_", 20)) \
 525             objc_cat_cls_meth_section ();                               \
 526           else if (!strncmp (name, "_OBJC_CATEGORY_INSTANCE_METHODS_", 23)) \
 527             objc_cat_inst_meth_section ();                              \
 528           else if (!strncmp (name, "_OBJC_CLASS_VARIABLES_", 22))       \
 529             objc_class_vars_section ();                                 \
 530           else if (!strncmp (name, "_OBJC_INSTANCE_VARIABLES_", 25))    \
 531             objc_instance_vars_section ();                              \
 532           else if (!strncmp (name, "_OBJC_CLASS_PROTOCOLS_", 22))       \
 533             objc_cat_cls_meth_section ();                               \
 534           else if (!strncmp (name, "_OBJC_CLASS_NAME_", 17))            \
 535             objc_class_names_section ();                                \
 536           else if (!strncmp (name, "_OBJC_METH_VAR_NAME_", 20))         \
 537             objc_meth_var_names_section ();                             \
 538           else if (!strncmp (name, "_OBJC_METH_VAR_TYPE_", 20))         \
 539             objc_meth_var_types_section ();                             \
 540           else if (!strncmp (name, "_OBJC_CLASS_REFERENCES", 22))       \
 541             objc_cls_refs_section ();                                   \
 542           else if (!strncmp (name, "_OBJC_CLASS_", 12))                 \
 543             objc_class_section ();                                      \
 544           else if (!strncmp (name, "_OBJC_METACLASS_", 16))             \
 545             objc_meta_class_section ();                                 \
 546           else if (!strncmp (name, "_OBJC_CATEGORY_", 15))              \
 547             objc_category_section ();                                   \
 548           else if (!strncmp (name, "_OBJC_SELECTOR_REFERENCES", 25))    \
 549             objc_selector_refs_section ();                              \
 550           else if (!strncmp (name, "_OBJC_SYMBOLS", 13))                \
 551             objc_symbols_section ();                                    \
 552           else if (!strncmp (name, "_OBJC_MODULES", 13))                \
 553             objc_module_info_section ();                                \
 554           else if (!strncmp (name, "_OBJC_PROTOCOL_INSTANCE_METHODS_", 32)) \
 555             objc_cat_inst_meth_section ();                              \
 556           else if (!strncmp (name, "_OBJC_PROTOCOL_CLASS_METHODS_", 29)) \
 557             objc_cat_cls_meth_section ();                               \
 558           else if (!strncmp (name, "_OBJC_PROTOCOL_REFS_", 20))         \
 559             objc_cat_cls_meth_section ();                               \
 560           else if (!strncmp (name, "_OBJC_PROTOCOL_", 15))              \
 561             objc_protocol_section ();                                   \
 562           else if ((TREE_READONLY (exp) || TREE_CONSTANT (exp))         \
 563                 && !TREE_SIDE_EFFECTS (exp))                            \
 564             readonly_data_section ();                                   \
 565           else                                                          \
 566             data_section ();                                            \
 567         }                                                               \
 568       else if (TREE_CODE (exp) == VAR_DECL)                             \
 569         {                                                               \
 570           if ((flag_pic && reloc)                                       \
 571               || !TREE_READONLY (exp) || TREE_SIDE_EFFECTS (exp)        \
 572               || !DECL_INITIAL (exp)                                    \
 573               || (DECL_INITIAL (exp) != error_mark_node                 \
 574                   && !TREE_CONSTANT (DECL_INITIAL (exp))))              \
 575             data_section ();                                            \
 576           else                                                          \
 577             readonly_data_section ();                                   \
 578         }                                                               \
 579       else                                                              \
 580         readonly_data_section ();                                       \
 581     }                                                                   \
 582   while (0)
 583
 584 #undef  SELECT_RTX_SECTION
 585 #define SELECT_RTX_SECTION(mode, rtx)                                   \
 586   do                                                                    \
 587     {                                                                   \
 588       if (GET_MODE_SIZE(mode) == 8)                                     \
 589         literal8_section();                                             \
 590       else if (GET_MODE_SIZE(mode) == 4)                                \
 591         literal4_section();                                             \
 592       else                                                              \
 593         const_section ();                                               \
 594     }                                                                   \
 595   while (0)
 596
 597 #ifdef ASM_COMMENT_START
 598 # undef ASM_COMMENT_START
 599 #endif
 600
 601 #define ASM_COMMENT_START ";#"