gcc/config/nextstep.h

   1 /* Operating system specific defines to be used when targeting GCC
   2    for NeXTSTEP.
   3    Copyright (C) 1989, 1990, 1991, 1992, 1993, 1996, 1997,
   4    1999, 2002 Free Software Foundation, Inc.
   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 /* Use new NeXT include file search path.
  24    In a cross compiler with NeXT as target, don't expect
  25    the host to use Next's directory scheme.  */
  26
  27 #ifndef CROSS_COMPILE
  28 #undef  INCLUDE_DEFAULTS
  29 #define INCLUDE_DEFAULTS                                \
  30   {                                                     \
  31     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },             \
  32     { LOCAL_INCLUDE_DIR, 0, 0, 1 },                     \
  33     { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },             \
  34     { GCC_INCLUDE_DIR, "GCC", 0, 0 },                   \
  35     /* These are for fixincludes-fixed ansi/bsd headers \
  36        which wouldn't be found otherwise.               \
  37        (The use of string catenation here is OK since   \
  38         NeXT's native compiler is derived from GCC.) */ \
  39     { GCC_INCLUDE_DIR "/ansi", 0, 0, 0 },               \
  40     { GCC_INCLUDE_DIR "/bsd", 0, 0, 0 },                \
  41     { "/NextDeveloper/Headers", 0, 0, 0 },              \
  42     { "/NextDeveloper/Headers/ansi", 0, 0, 0 },         \
  43     { "/NextDeveloper/Headers/bsd", 0, 0, 0 },          \
  44     { "/LocalDeveloper/Headers", 0, 0, 0 },             \
  45     { "/LocalDeveloper/Headers/ansi", 0, 0, 0 },        \
  46     { "/LocalDeveloper/Headers/bsd", 0, 0, 0 },         \
  47     { "/NextDeveloper/2.0CompatibleHeaders", 0, 0, 0 }, \
  48     { STANDARD_INCLUDE_DIR, 0, 0, 0 },                  \
  49     { "/usr/include/bsd", 0, 0, 0 },                    \
  50     { 0, 0, 0, 0 }                                      \
  51   }
  52 #else /* CROSS_COMPILE */
  53 #undef  INCLUDE_DEFAULTS
  54 #define INCLUDE_DEFAULTS                                \
  55   {                                                     \
  56     { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },             \
  57     { GPLUSPLUS_INCLUDE_DIR, 0, 1, 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     { "/usr/include/bsd", 0, 0, 0 },                    \
  65     { 0, 0, 0, 0 }                                      \
  66   }
  67 #endif /* CROSS_COMPILE */
  68
  69 #undef  EXTRA_FORMAT_FUNCTIONS
  70 #define EXTRA_FORMAT_FUNCTIONS \
  71       "NXPrintf",       FALSE,  2,      FALSE,  \
  72       "NXScanf",        TRUE,   2,      FALSE,  \
  73       "NXVPrintf",      FALSE,  2,      TRUE,   \
  74       "NXVScanf",       TRUE,   2,      TRUE,   \
  75       "DPSPrintf",      FALSE,  2,      FALSE,  \
  76       "bsd_sprintf",    FALSE,  2,      FALSE,  \
  77       "bsd_vsprintf",   FALSE,  2,      TRUE,
  78
  79 /* Make -fnext-runtime the default.  */
  80
  81 #define NEXT_OBJC_RUNTIME
  82
  83 /* Enable recent gcc to compile under the old gcc in Next release 1.0.  */
  84
  85 #define __inline inline
  86
  87 /* wchar_t is unsigned short */
  88
  89 #undef  WCHAR_TYPE
  90 #define WCHAR_TYPE "short unsigned int"
  91 #undef  WCHAR_TYPE_SIZE
  92 #define WCHAR_TYPE_SIZE (BITS_PER_WORD / 2)
  93
  94 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  95    we want to retain compatibility with older gcc versions.  */
  96
  97 #undef  DEFAULT_PCC_STRUCT_RETURN
  98 #define DEFAULT_PCC_STRUCT_RETURN 0
  99
 100 /* These compiler options take n arguments.  */
 101
 102 #undef  WORD_SWITCH_TAKES_ARG
 103 #define WORD_SWITCH_TAKES_ARG(STR)              \
 104   (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) ? 1 :    \
 105    !strcmp (STR, "segalign") ? 1 :              \
 106    !strcmp (STR, "seg1addr") ? 1 :              \
 107    !strcmp (STR, "segaddr") ? 2 :               \
 108    !strcmp (STR, "sectobjectsymbols") ? 2 :     \
 109    !strcmp (STR, "segprot") ? 3 :               \
 110    !strcmp (STR, "sectcreate") ? 3 :            \
 111    !strcmp (STR, "sectalign") ? 3 :             \
 112    !strcmp (STR, "segcreate") ? 3 :             \
 113    !strcmp (STR, "sectorder") ? 3 :             \
 114    !strcmp (STR, "siff-mask") ? 1 :             \
 115    !strcmp (STR, "siff-filter") ? 1 :           \
 116    !strcmp (STR, "siff-warning") ? 1 :          \
 117    !strcmp (STR, "arch") ? 1 :                  \
 118    !strcmp (STR, "pagezero_size") ? 1 :         \
 119    0)
 120
 121 #undef  WORD_SWITCH
 122 #define WORD_SWITCH(STR)                        \
 123   (WORD_SWITCH_TAKES_ARG (STR)                  \
 124    || !strcmp (STR, "bsd")                      \
 125    || !strcmp (STR, "object")                   \
 126    || !strcmp (STR, "ObjC")                     \
 127    || !strcmp (STR, "all_load"))
 128
 129 /* Machine dependent ccp options.  */
 130
 131 #undef  CPP_SPEC
 132 #define CPP_SPEC "%{posixstrict:-D_POSIX_SOURCE}         \
 133                   %{!posixstrict:%{bsd:-D__STRICT_BSD__} \
 134                   %{posix:-D_POSIX_SOURCE}               \
 135                   %{!ansi:-D_NEXT_SOURCE}}               \
 136                   %{MD:-MD %M} %{MMD:-MMD %M}"
 137
 138 /* Machine dependent ld options.  */
 139
 140 #undef  LINK_SPEC
 141 #define LINK_SPEC "%{Z} %{M} \
 142 %{execute*} %{preload*} %{fvmlib*} \
 143 %{segalign*} %{seg1addr*} %{segaddr*} %{segprot*} \
 144 %{pagezero_size*} \
 145 %{seglinkedit*} %{noseglinkedit*} \
 146 %{sectcreate*} %{sectalign*} %{sectobjectsymbols}\
 147 %{segcreate*} %{Mach*} %{whyload} %{w} \
 148 %{sectorder*} %{whatsloaded} %{ObjC} %{all_load} %{object}"
 149
 150 /* Machine dependent libraries.  */
 151
 152 #undef  LIB_SPEC
 153 #define LIB_SPEC "%{!posix*:-lsys_s} %{posix*:-lposix}"
 154
 155 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
 156
 157 #undef  STARTFILE_SPEC
 158 #define STARTFILE_SPEC  \
 159     "%{!posix*:%{pg:-lgcrt0.o}%{!pg: \
 160      %{p:%e-p profiling is no longer supported.  Use -pg instead} \
 161      %{!p:-lcrt0.o}}}\
 162      %{posix*:%{pg:-lgposixcrt0.o}%{!pg: \
 163      %{p:%e-p profiling is no longer supported.  Use -pg instead} \
 164      %{!p:-lposixcrt0.o}}} \
 165      -lcrtbegin.o"
 166
 167 #undef  ENDFILE_SPEC
 168 #define ENDFILE_SPEC \
 169     "-lcrtend.o"
 170
 171 /* Allow #sscs (but don't do anything). */
 172
 173 #define SCCS_DIRECTIVE
 174
 175 /* We use Dbx symbol format.  */
 176
 177 #undef  SDB_DEBUGGING_INFO
 178 #undef  XCOFF_DEBUGGING_INFO
 179 #define DBX_DEBUGGING_INFO
 180
 181 /* This saves a fair amount of space. */
 182
 183 #undef  DBX_CONTIN_LENGTH
 184 #define DBX_CONTIN_LENGTH 0
 185
 186 /* These screw up NeXT's gdb at the moment, so don't use them. */
 187
 188 #undef  DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
 189 #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(FILE, FILENAME)
 190
 191 /* These come from bsd386.h, but are specific to sequent, so make sure
 192    they don't bite us.  */
 193
 194 #undef  DBX_NO_XREFS
 195 #undef  DBX_CONTIN_LENGTH
 196
 197 /* gdb needs a null N_SO at the end of each file for scattered loading. */
 198
 199 #undef  DBX_OUTPUT_MAIN_SOURCE_FILE_END
 200 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
 201   fprintf (FILE,                                                        \
 202            "\t.text\n\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n",         \
 203            "" , N_SO)
 204
 205 /* Define our object format type for crtstuff.c */
 206 #define OBJECT_FORMAT_MACHO
 207
 208 #undef  INIT_SECTION_ASM_OP
 209 #define INIT_SECTION_ASM_OP
 210 #undef  INVOKE__main
 211
 212 #define TARGET_ASM_CONSTRUCTOR  nextstep_asm_out_constructor
 213 #define TARGET_ASM_DESTRUCTOR   nextstep_asm_out_destructor
 214
 215 #define TARGET_ASM_EXCEPTION_SECTION nextstep_exception_section
 216
 217 #define TARGET_ASM_EH_FRAME_SECTION nextstep_eh_frame_section
 218
 219 /* Don't output a .file directive.  That is only used by the assembler for
 220    error reporting.  */
 221 #undef  ASM_FILE_START
 222 #define ASM_FILE_START(FILE)
 223
 224 #undef  ASM_FILE_END
 225 #define ASM_FILE_END(FILE)                                      \
 226   do {                                                          \
 227     if (strcmp (lang_hooks.name, "GNU C++") == 0)               \
 228       {                                                         \
 229         constructor_section ();                                 \
 230         destructor_section ();                                  \
 231         ASM_OUTPUT_ALIGN (FILE, 1);                             \
 232       }                                                         \
 233   } while (0)
 234
 235 /* How to parse #pragma's */
 236
 237 #undef  HANDLE_PRAGMA
 238 #define HANDLE_PRAGMA(GETC, UNGETC, NAME) handle_pragma (GETC, UNGETC, NAME)
 239
 240 /* Give methods pretty symbol names on NeXT. */
 241
 242 #undef  OBJC_GEN_METHOD_LABEL
 243 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 244   do { if (CAT_NAME)                                                    \
 245          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 246                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 247        else                                                             \
 248          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 249                   (CLASS_NAME), (SEL_NAME));                            \
 250      } while (0)
 251
 252 /* The prefix to add to user-visible assembler symbols. */
 253
 254 #undef USER_LABEL_PREFIX
 255 #define USER_LABEL_PREFIX "_"
 256
 257 /* Wrap new method names in quotes so the assembler doesn't gag.
 258    Make Objective-C internal symbols local.  */
 259
 260 #undef  ASM_OUTPUT_LABELREF
 261 #define ASM_OUTPUT_LABELREF(FILE,NAME)  \
 262   do { if (NAME[0] == '+' || NAME[0] == '-') fprintf (FILE, "\"%s\"", NAME); \
 263        else if (!strncmp (NAME, "_OBJC_", 6)) fprintf (FILE, "L%s", NAME);   \
 264        else if (!strncmp (NAME, ".objc_class_name_", 17))               \
 265          fprintf (FILE, "%s", NAME);                                    \
 266        else asm_fprintf (FILE, "%U%s", NAME); } while (0)
 267
 268 #undef  ALIGN_ASM_OP
 269 #define ALIGN_ASM_OP            "\t.align\t"
 270
 271 #undef  ASM_OUTPUT_ALIGN
 272 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 273   if ((LOG) != 0)                       \
 274     fprintf (FILE, "%s%d\n", ALIGN_ASM_OP, (LOG))
 275
 276 /* Ensure correct alignment of bss data.  */
 277
 278 #undef  ASM_OUTPUT_ALIGNED_LOCAL
 279 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
 280 ( fputs (".lcomm ", (FILE)),                            \
 281   assemble_name ((FILE), (NAME)),                       \
 282   fprintf ((FILE), ",%u,%u\n", (SIZE), floor_log2 ((ALIGN) / BITS_PER_UNIT)))
 283
 284 /* Output #ident as a .ident.  */
 285
 286 #undef  ASM_OUTPUT_IDENT
 287 #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
 288
 289 /* The maximum alignment which the object file format can support.
 290    For NeXT's Mach-O format, this is 2^15.  */
 291
 292 #undef  MAX_OFILE_ALIGNMENT
 293 #define MAX_OFILE_ALIGNMENT 0x8000
 294
 295 /* Create new Mach-O sections. */
 296
 297 #undef  SECTION_FUNCTION
 298 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, WAS_TEXT, OBJC)  \
 299 extern void FUNCTION PARAMS ((void));                                   \
 300 void                                                                    \
 301 FUNCTION ()                                                             \
 302 {                                                                       \
 303   extern int flag_no_mach_text_sections;                                \
 304                                                                         \
 305   if (WAS_TEXT && flag_no_mach_text_sections)                           \
 306     text_section ();                                                    \
 307   else if (in_section != SECTION)                                       \
 308     {                                                                   \
 309       if (OBJC)                                                         \
 310         objc_section_init ();                                           \
 311       fprintf (asm_out_file, "%s\n", DIRECTIVE);                        \
 312       in_section = SECTION;                                             \
 313     }                                                                   \
 314 }                                                                       \
 315
 316 #undef  EXTRA_SECTIONS
 317 #define EXTRA_SECTIONS                                  \
 318   in_const, in_cstring, in_literal4, in_literal8,       \
 319   in_constructor, in_destructor,                        \
 320   in_nextstep_exception, in_nextstep_eh_frame,          \
 321   in_objc_class, in_objc_meta_class, in_objc_category,  \
 322   in_objc_class_vars, in_objc_instance_vars,            \
 323   in_objc_cls_meth, in_objc_inst_meth,                  \
 324   in_objc_cat_cls_meth, in_objc_cat_inst_meth,          \
 325   in_objc_selector_refs,                                \
 326   in_objc_symbols, in_objc_module_info,                 \
 327   in_objc_protocol, in_objc_string_object,              \
 328   in_objc_class_names, in_objc_meth_var_names,          \
 329   in_objc_meth_var_types, in_objc_cls_refs
 330
 331 #undef  EXTRA_SECTION_FUNCTIONS
 332 #define EXTRA_SECTION_FUNCTIONS                 \
 333 extern void objc_section_init PARAMS ((void));  \
 334 SECTION_FUNCTION (const_section,                \
 335                   in_const,                     \
 336                   ".const", 1, 0)               \
 337 SECTION_FUNCTION (cstring_section,              \
 338                   in_cstring,                   \
 339                   ".cstring", 1, 0)             \
 340 SECTION_FUNCTION (literal4_section,             \
 341                   in_literal4,                  \
 342                   ".literal4", 1, 0)            \
 343 SECTION_FUNCTION (literal8_section,             \
 344                   in_literal8,                  \
 345                   ".literal8", 1, 0)            \
 346 SECTION_FUNCTION (constructor_section,          \
 347                   in_constructor,               \
 348                   ".constructor", 0, 0)         \
 349 SECTION_FUNCTION (destructor_section,           \
 350                   in_destructor,                \
 351                   ".destructor", 0, 0)          \
 352 SECTION_FUNCTION (nextstep_exception_section,   \
 353                   in_nextstep_exception,        \
 354                   ".section __TEXT,__gcc_except_tab,regular", 0, 0)     \
 355 SECTION_FUNCTION (nextstep_eh_frame_section,    \
 356                   in_nextstep_eh_frame,         \
 357                   ".section __TEXT,__eh_frame,regular", 0, 0)           \
 358 SECTION_FUNCTION (objc_class_section,           \
 359                   in_objc_class,                \
 360                   ".objc_class", 0, 1)          \
 361 SECTION_FUNCTION (objc_meta_class_section,      \
 362                   in_objc_meta_class,           \
 363                   ".objc_meta_class", 0, 1)     \
 364 SECTION_FUNCTION (objc_category_section,        \
 365                   in_objc_category,             \
 366                 ".objc_category", 0, 1)         \
 367 SECTION_FUNCTION (objc_class_vars_section,      \
 368                   in_objc_class_vars,           \
 369                   ".objc_class_vars", 0, 1)     \
 370 SECTION_FUNCTION (objc_instance_vars_section,   \
 371                   in_objc_instance_vars,        \
 372                   ".objc_instance_vars", 0, 1)  \
 373 SECTION_FUNCTION (objc_cls_meth_section,        \
 374                   in_objc_cls_meth,             \
 375                   ".objc_cls_meth", 0, 1)       \
 376 SECTION_FUNCTION (objc_inst_meth_section,       \
 377                   in_objc_inst_meth,            \
 378                   ".objc_inst_meth", 0, 1)      \
 379 SECTION_FUNCTION (objc_cat_cls_meth_section,    \
 380                   in_objc_cat_cls_meth,         \
 381                   ".objc_cat_cls_meth", 0, 1)   \
 382 SECTION_FUNCTION (objc_cat_inst_meth_section,   \
 383                   in_objc_cat_inst_meth,        \
 384                   ".objc_cat_inst_meth", 0, 1)  \
 385 SECTION_FUNCTION (objc_selector_refs_section,   \
 386                   in_objc_selector_refs,        \
 387                   ".objc_message_refs", 0, 1)   \
 388 SECTION_FUNCTION (objc_symbols_section,         \
 389                   in_objc_symbols,              \
 390                   ".objc_symbols", 0, 1)        \
 391 SECTION_FUNCTION (objc_module_info_section,     \
 392                   in_objc_module_info,          \
 393                   ".objc_module_info", 0, 1)    \
 394 SECTION_FUNCTION (objc_protocol_section,        \
 395                   in_objc_protocol,             \
 396                   ".objc_protocol", 0, 1)       \
 397 SECTION_FUNCTION (objc_string_object_section,   \
 398                   in_objc_string_object,        \
 399                   ".objc_string_object", 0, 1)  \
 400 SECTION_FUNCTION (objc_class_names_section,     \
 401                 in_objc_class_names,            \
 402                 ".objc_class_names", 0, 1)      \
 403 SECTION_FUNCTION (objc_meth_var_names_section,  \
 404                 in_objc_meth_var_names,         \
 405                 ".objc_meth_var_names", 0, 1)   \
 406 SECTION_FUNCTION (objc_meth_var_types_section,  \
 407                 in_objc_meth_var_types,         \
 408                 ".objc_meth_var_types", 0, 1)   \
 409 SECTION_FUNCTION (objc_cls_refs_section,        \
 410                 in_objc_cls_refs,               \
 411                 ".objc_cls_refs", 0, 1)         \
 412                                                 \
 413 void                                            \
 414 objc_section_init ()                            \
 415 {                                               \
 416   static int been_here = 0;                     \
 417                                                 \
 418   if (been_here == 0)                           \
 419     {                                           \
 420       been_here = 1;                            \
 421       objc_class_section ();                    \
 422       objc_meta_class_section ();               \
 423       objc_cat_cls_meth_section ();             \
 424       objc_cat_inst_meth_section ();            \
 425       objc_cls_meth_section ();                 \
 426       objc_inst_meth_section ();                \
 427       objc_selector_refs_section ();            \
 428       objc_symbols_section ();                  \
 429       objc_category_section ();                 \
 430       objc_protocol_section ();                 \
 431       objc_class_vars_section ();               \
 432       objc_instance_vars_section ();            \
 433       objc_module_info_section ();              \
 434       objc_string_object_section ();            \
 435       objc_class_names_section ();              \
 436       objc_meth_var_names_section ();           \
 437       objc_meth_var_types_section ();           \
 438       objc_cls_refs_section ();                 \
 439     }                                           \
 440 }
 441
 442 #define READONLY_DATA_SECTION const_section
 443
 444 #undef  TARGET_ASM_SELECT_SECTION
 445 #define TARGET_ASM_SELECT_SECTION nextstep_select_section
 446 #undef  TARGET_ASM_SELECT_RTX_SECTION
 447 #define TARGET_ASM_SELECT_RTX_SECTION nextstep_select_rtx_section
 448
 449 #ifdef ASM_COMMENT_START
 450 # undef ASM_COMMENT_START
 451 #endif
 452
 453 #define ASM_COMMENT_START ";#"