gcc/config/darwin.h

   1 /* Target definitions for Darwin (Mac OS X) systems.
   2    Copyright (C) 1989, 1990, 1991, 1992, 1993, 2000, 2001, 2002
   3    Free Software Foundation, Inc.
   4    Contributed by Apple Computer 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 /* The definitions in this file are common to all processor types
  24    running Darwin, which is the kernel for Mac OS X.  Darwin is
  25    basically a BSD user layer laid over a Mach kernel, then evolved
  26    for many years (at NeXT) in parallel with other Unix systems.  So
  27    while the runtime is a somewhat idiosyncratic Mach-based thing,
  28    other definitions look like they would for a BSD variant.  */
  29
  30 /* Although NeXT ran on many different architectures, as of Jan 2001
  31    the only supported Darwin targets are PowerPC and x86.  */
  32
  33 /* Technically, STANDARD_EXEC_PREFIX should be /usr/libexec/, but in
  34    practice this makes it hard to install new compilers elsewhere, so
  35    leave it undefined and expect system builders to set configure args
  36    correctly.  */
  37
  38 /* Suppress g++ attempt to link in the math library automatically.
  39    (Some Darwin versions have a libm, but they seem to cause problems
  40    for C++ executables.)  */
  41
  42 #define MATH_LIBRARY ""
  43
  44 /* We have atexit.  */
  45
  46 #define HAVE_ATEXIT
  47
  48 /* Define an empty body for the function do_global_dtors() in libgcc2.c.  */
  49
  50 #define DO_GLOBAL_DTORS_BODY
  51
  52 /* The string value for __SIZE_TYPE__.  */
  53
  54 #ifndef SIZE_TYPE
  55 #define SIZE_TYPE "long unsigned int"
  56 #endif
  57
  58 /* Type used for ptrdiff_t, as a string used in a declaration.  */
  59
  60 #undef  PTRDIFF_TYPE
  61 #define PTRDIFF_TYPE "int"
  62
  63 /* wchar_t is int.  */
  64
  65 #undef  WCHAR_TYPE
  66 #define WCHAR_TYPE "int"
  67 #undef  WCHAR_TYPE_SIZE
  68 #define WCHAR_TYPE_SIZE 32
  69
  70 /* Default to using the NeXT-style runtime, since that's what is
  71    pre-installed on Darwin systems.  */
  72
  73 #define NEXT_OBJC_RUNTIME
  74
  75 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  76    we want to retain compatibility with older gcc versions.  */
  77
  78 #undef  DEFAULT_PCC_STRUCT_RETURN
  79 #define DEFAULT_PCC_STRUCT_RETURN 0
  80
  81 /* Machine dependent cpp options.  */
  82
  83 #undef  CPP_SPEC
  84 #define CPP_SPEC "%{static:-D__STATIC__}%{!static:-D__DYNAMIC__}"
  85
  86 /* Machine dependent libraries.  */
  87
  88 #undef  LIB_SPEC
  89 #define LIB_SPEC "%{!static:-lSystem}"
  90
  91 /* We specify crt0.o as -lcrt0.o so that ld will search the library path. */
  92
  93 #undef  STARTFILE_SPEC
  94 #define STARTFILE_SPEC  \
  95   "%{pg:%{static:-lgcrt0.o}%{!static:-lgcrt1.o}} \
  96     %{!pg:%{static:-lcrt0.o}%{!static:-lcrt1.o}}"
  97
  98 #undef  DOLLARS_IN_IDENTIFIERS
  99 #define DOLLARS_IN_IDENTIFIERS 2
 100
 101 /* We use Dbx symbol format.  */
 102
 103 #define DBX_DEBUGGING_INFO 1
 104
 105 /* When generating stabs debugging, use N_BINCL entries.  */
 106
 107 #define DBX_USE_BINCL
 108
 109 /* There is no limit to the length of stabs strings.  */
 110
 111 #define DBX_CONTIN_LENGTH 0
 112
 113 /* gdb needs a null N_SO at the end of each file for scattered loading. */
 114
 115 #undef  DBX_OUTPUT_MAIN_SOURCE_FILE_END
 116 #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME)                 \
 117 do { text_section ();                                                   \
 118      fprintf (FILE,                                                     \
 119               "\t.stabs \"%s\",%d,0,0,Letext\nLetext:\n", "" , N_SO);   \
 120    } while (0)
 121
 122 /* Our profiling scheme doesn't LP labels and counter words.  */
 123
 124 #define NO_PROFILE_COUNTERS
 125
 126 #undef  INIT_SECTION_ASM_OP
 127 #define INIT_SECTION_ASM_OP
 128
 129 #undef  INVOKE__main
 130
 131 #define TARGET_ASM_CONSTRUCTOR  machopic_asm_out_constructor
 132 #define TARGET_ASM_DESTRUCTOR   machopic_asm_out_destructor
 133
 134
 135 /* Don't output a .file directive.  That is only used by the assembler for
 136    error reporting.  */
 137
 138 #undef  ASM_FILE_START
 139 #define ASM_FILE_START(FILE)
 140
 141 #undef  ASM_FILE_END
 142 #define ASM_FILE_END(FILE)                                      \
 143   do {                                                          \
 144     machopic_finish (asm_out_file);                             \
 145     if (strcmp (lang_hooks.name, "GNU C++") == 0)               \
 146       {                                                         \
 147         constructor_section ();                                 \
 148         destructor_section ();                                  \
 149         ASM_OUTPUT_ALIGN (FILE, 1);                             \
 150       }                                                         \
 151   } while (0)
 152
 153 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
 154   fprintf (FILE, "\t.space %d\n", SIZE)
 155
 156 /* Give ObjC methods pretty symbol names. */
 157
 158 #undef  OBJC_GEN_METHOD_LABEL
 159 #define OBJC_GEN_METHOD_LABEL(BUF,IS_INST,CLASS_NAME,CAT_NAME,SEL_NAME,NUM) \
 160   do { if (CAT_NAME)                                                    \
 161          sprintf (BUF, "%c[%s(%s) %s]", (IS_INST) ? '-' : '+',          \
 162                   (CLASS_NAME), (CAT_NAME), (SEL_NAME));                \
 163        else                                                             \
 164          sprintf (BUF, "%c[%s %s]", (IS_INST) ? '-' : '+',              \
 165                   (CLASS_NAME), (SEL_NAME));                            \
 166      } while (0)
 167
 168 /* The RTTI data (e.g., __ti4name) is common and public (and static),
 169    but it does need to be referenced via indirect PIC data pointers.
 170    The machopic_define_name calls are telling the machopic subsystem
 171    that the name *is* defined in this module, so it doesn't need to
 172    make them indirect.  */
 173
 174 #undef ASM_DECLARE_OBJECT_NAME
 175 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 176   do {                                                                  \
 177     const char *xname = NAME;                                           \
 178     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 179       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 180     if ((TREE_STATIC (DECL)                                             \
 181          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 182         || DECL_INITIAL (DECL))                                         \
 183       machopic_define_name (xname);                                     \
 184     if ((TREE_STATIC (DECL)                                             \
 185          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 186         || DECL_INITIAL (DECL))                                         \
 187       (* targetm.encode_section_info) (DECL, false);                    \
 188     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 189   } while (0)
 190
 191 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 192   do {                                                                  \
 193     const char *xname = NAME;                                           \
 194     if (GET_CODE (XEXP (DECL_RTL (DECL), 0)) != SYMBOL_REF)             \
 195       xname = IDENTIFIER_POINTER (DECL_NAME (DECL));                    \
 196     if ((TREE_STATIC (DECL)                                             \
 197          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 198         || DECL_INITIAL (DECL))                                         \
 199       machopic_define_name (xname);                                     \
 200     if ((TREE_STATIC (DECL)                                             \
 201          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 202         || DECL_INITIAL (DECL))                                         \
 203       (* targetm.encode_section_info) (DECL, false);                    \
 204     ASM_OUTPUT_LABEL (FILE, xname);                                     \
 205     /* Avoid generating stubs for functions we've just defined by       \
 206        outputting any required stub name label now.  */                 \
 207     machopic_output_possible_stub_label (FILE, xname);                  \
 208   } while (0)
 209
 210 /* Wrap new method names in quotes so the assembler doesn't gag.
 211    Make Objective-C internal symbols local.  */
 212
 213 #undef  ASM_OUTPUT_LABELREF
 214 #define ASM_OUTPUT_LABELREF(FILE,NAME)                                       \
 215   do {                                                                       \
 216        const char *xname = darwin_strip_name_encoding (NAME);                \
 217        if (xname[0] == '&' || xname[0] == '*')                               \
 218          {                                                                   \
 219            int len = strlen (xname);                                         \
 220            if (len > 6 && !strcmp ("$stub", xname + len - 5))                \
 221              machopic_validate_stub_or_non_lazy_ptr (xname, 1);              \
 222            else if (len > 7 && !strcmp ("$stub\"", xname + len - 6))         \
 223              machopic_validate_stub_or_non_lazy_ptr (xname, 1);              \
 224            else if (len > 14 && !strcmp ("$non_lazy_ptr", xname + len - 13)) \
 225              machopic_validate_stub_or_non_lazy_ptr (xname, 0);              \
 226            fputs (&xname[1], FILE);                                          \
 227          }                                                                   \
 228        else if (xname[0] == '+' || xname[0] == '-')                          \
 229          fprintf (FILE, "\"%s\"", xname);                                    \
 230        else if (!strncmp (xname, "_OBJC_", 6))                               \
 231          fprintf (FILE, "L%s", xname);                                       \
 232        else if (!strncmp (xname, ".objc_class_name_", 17))                   \
 233          fprintf (FILE, "%s", xname);                                        \
 234        else                                                                  \
 235          fprintf (FILE, "_%s", xname);                                       \
 236   } while (0)
 237
 238 /* Output before executable code.  */
 239 #undef TEXT_SECTION_ASM_OP
 240 #define TEXT_SECTION_ASM_OP ".text"
 241
 242 /* Output before writable data.  */
 243
 244 #undef DATA_SECTION_ASM_OP
 245 #define DATA_SECTION_ASM_OP ".data"
 246
 247 #undef  ALIGN_ASM_OP
 248 #define ALIGN_ASM_OP            ".align"
 249
 250 #undef  ASM_OUTPUT_ALIGN
 251 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 252   if ((LOG) != 0)                       \
 253     fprintf (FILE, "\t%s %d\n", ALIGN_ASM_OP, (LOG))
 254
 255 /* Ensure correct alignment of bss data.  */
 256
 257 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 258 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)    \
 259   do {                                                                  \
 260     fputs (".lcomm ", (FILE));                                          \
 261     assemble_name ((FILE), (NAME));                                     \
 262     fprintf ((FILE), ",%u,%u\n", (SIZE),                                \
 263              floor_log2 ((ALIGN) / BITS_PER_UNIT));                     \
 264     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 265          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 266         || DECL_INITIAL (DECL)))                                        \
 267       (* targetm.encode_section_info) (DECL, false);                    \
 268     if ((DECL) && ((TREE_STATIC (DECL)                                  \
 269          && (!DECL_COMMON (DECL) || !TREE_PUBLIC (DECL)))               \
 270         || DECL_INITIAL (DECL)))                                        \
 271       machopic_define_name (NAME);                                      \
 272   } while (0)
 273
 274 /* The maximum alignment which the object file format can support.
 275    For Mach-O, this is 2^15.  */
 276
 277 #undef  MAX_OFILE_ALIGNMENT
 278 #define MAX_OFILE_ALIGNMENT 0x8000
 279
 280 /* Create new Mach-O sections. */
 281
 282 #undef  SECTION_FUNCTION
 283 #define SECTION_FUNCTION(FUNCTION, SECTION, DIRECTIVE, OBJC)            \
 284 extern void FUNCTION PARAMS ((void));                                   \
 285 void                                                                    \
 286 FUNCTION ()                                                             \
 287 {                                                                       \
 288   if (in_section != SECTION)                                            \
 289     {                                                                   \
 290       if (OBJC)                                                         \
 291         objc_section_init ();                                           \
 292       data_section ();                                                  \
 293       if (asm_out_file)                                                 \
 294         fprintf (asm_out_file, "%s\n", DIRECTIVE);                      \
 295       in_section = SECTION;                                             \
 296     }                                                                   \
 297 }                                                                       \
 298
 299 /* Darwin uses many types of special sections.  */
 300
 301 #undef  EXTRA_SECTIONS
 302 #define EXTRA_SECTIONS                                  \
 303   in_const, in_const_data, in_cstring, in_literal4, in_literal8,        \
 304   in_constructor, in_destructor, in_mod_init, in_mod_term,              \
 305   in_objc_class, in_objc_meta_class, in_objc_category,  \
 306   in_objc_class_vars, in_objc_instance_vars,            \
 307   in_objc_cls_meth, in_objc_inst_meth,                  \
 308   in_objc_cat_cls_meth, in_objc_cat_inst_meth,          \
 309   in_objc_selector_refs,                                \
 310   in_objc_selector_fixup,                               \
 311   in_objc_symbols, in_objc_module_info,                 \
 312   in_objc_protocol, in_objc_string_object,              \
 313   in_objc_constant_string_object,                       \
 314   in_objc_class_names, in_objc_meth_var_names,          \
 315   in_objc_meth_var_types, in_objc_cls_refs,             \
 316   in_machopic_nl_symbol_ptr,                            \
 317   in_machopic_lazy_symbol_ptr,                          \
 318   in_machopic_symbol_stub,                              \
 319   in_machopic_picsymbol_stub,                           \
 320   in_darwin_exception, in_darwin_eh_frame,              \
 321   num_sections
 322
 323 #undef  EXTRA_SECTION_FUNCTIONS
 324 #define EXTRA_SECTION_FUNCTIONS                 \
 325 static void objc_section_init PARAMS ((void));  \
 326 SECTION_FUNCTION (const_section,                \
 327                   in_const,                     \
 328                   ".const", 0)                  \
 329 SECTION_FUNCTION (const_data_section,           \
 330                   in_const_data,                \
 331                   ".const_data", 0)             \
 332 SECTION_FUNCTION (cstring_section,              \
 333                   in_cstring,                   \
 334                   ".cstring", 0)                \
 335 SECTION_FUNCTION (literal4_section,             \
 336                   in_literal4,                  \
 337                   ".literal4", 0)               \
 338 SECTION_FUNCTION (literal8_section,             \
 339                   in_literal8,                  \
 340                   ".literal8", 0)               \
 341 SECTION_FUNCTION (constructor_section,          \
 342                   in_constructor,               \
 343                   ".constructor", 0)            \
 344 SECTION_FUNCTION (mod_init_section,             \
 345                   in_mod_init,                  \
 346                   ".mod_init_func", 0)  \
 347 SECTION_FUNCTION (mod_term_section, \
 348                   in_mod_term,                  \
 349                   ".mod_term_func", 0)  \
 350 SECTION_FUNCTION (destructor_section,           \
 351                   in_destructor,                \
 352                   ".destructor", 0)             \
 353 SECTION_FUNCTION (objc_class_section,           \
 354                   in_objc_class,                \
 355                   ".objc_class", 1)             \
 356 SECTION_FUNCTION (objc_meta_class_section,      \
 357                   in_objc_meta_class,           \
 358                   ".objc_meta_class", 1)        \
 359 SECTION_FUNCTION (objc_category_section,        \
 360                   in_objc_category,             \
 361                 ".objc_category", 1)            \
 362 SECTION_FUNCTION (objc_class_vars_section,      \
 363                   in_objc_class_vars,           \
 364                   ".objc_class_vars", 1)        \
 365 SECTION_FUNCTION (objc_instance_vars_section,   \
 366                   in_objc_instance_vars,        \
 367                   ".objc_instance_vars", 1)     \
 368 SECTION_FUNCTION (objc_cls_meth_section,        \
 369                   in_objc_cls_meth,             \
 370                   ".objc_cls_meth", 1)  \
 371 SECTION_FUNCTION (objc_inst_meth_section,       \
 372                   in_objc_inst_meth,            \
 373                   ".objc_inst_meth", 1) \
 374 SECTION_FUNCTION (objc_cat_cls_meth_section,    \
 375                   in_objc_cat_cls_meth,         \
 376                   ".objc_cat_cls_meth", 1)      \
 377 SECTION_FUNCTION (objc_cat_inst_meth_section,   \
 378                   in_objc_cat_inst_meth,        \
 379                   ".objc_cat_inst_meth", 1)     \
 380 SECTION_FUNCTION (objc_selector_refs_section,   \
 381                   in_objc_selector_refs,        \
 382                   ".objc_message_refs", 1)      \
 383 SECTION_FUNCTION (objc_selector_fixup_section,  \
 384                   in_objc_selector_fixup,       \
 385                   ".section __OBJC, __sel_fixup", 1)    \
 386 SECTION_FUNCTION (objc_symbols_section,         \
 387                   in_objc_symbols,              \
 388                   ".objc_symbols", 1)   \
 389 SECTION_FUNCTION (objc_module_info_section,     \
 390                   in_objc_module_info,          \
 391                   ".objc_module_info", 1)       \
 392 SECTION_FUNCTION (objc_protocol_section,        \
 393                   in_objc_protocol,             \
 394                   ".objc_protocol", 1)  \
 395 SECTION_FUNCTION (objc_string_object_section,   \
 396                   in_objc_string_object,        \
 397                   ".objc_string_object", 1)     \
 398 SECTION_FUNCTION (objc_constant_string_object_section,  \
 399                   in_objc_constant_string_object,       \
 400                   ".section __OBJC, __cstring_object", 1)       \
 401 SECTION_FUNCTION (objc_class_names_section,     \
 402                 in_objc_class_names,            \
 403                 ".objc_class_names", 1) \
 404 SECTION_FUNCTION (objc_meth_var_names_section,  \
 405                 in_objc_meth_var_names,         \
 406                 ".objc_meth_var_names", 1)      \
 407 SECTION_FUNCTION (objc_meth_var_types_section,  \
 408                 in_objc_meth_var_types,         \
 409                 ".objc_meth_var_types", 1)      \
 410 SECTION_FUNCTION (objc_cls_refs_section,        \
 411                 in_objc_cls_refs,               \
 412                 ".objc_cls_refs", 1)            \
 413                                                 \
 414 SECTION_FUNCTION (machopic_lazy_symbol_ptr_section,     \
 415                 in_machopic_lazy_symbol_ptr,            \
 416                 ".lazy_symbol_pointer", 0)              \
 417 SECTION_FUNCTION (machopic_nl_symbol_ptr_section,       \
 418                 in_machopic_nl_symbol_ptr,              \
 419                 ".non_lazy_symbol_pointer", 0)          \
 420 SECTION_FUNCTION (machopic_symbol_stub_section,         \
 421                 in_machopic_symbol_stub,                \
 422                 ".symbol_stub", 0)                      \
 423 SECTION_FUNCTION (machopic_picsymbol_stub_section,      \
 424                 in_machopic_picsymbol_stub,             \
 425                 ".picsymbol_stub", 0)                   \
 426 SECTION_FUNCTION (darwin_exception_section,             \
 427                 in_darwin_exception,                    \
 428                 ".section __TEXT,__gcc_except_tab", 0)  \
 429 SECTION_FUNCTION (darwin_eh_frame_section,              \
 430                 in_darwin_eh_frame,                     \
 431                 ".section __TEXT,__eh_frame", 0)        \
 432                                                         \
 433 static void                                     \
 434 objc_section_init ()                            \
 435 {                                               \
 436   static int been_here = 0;                     \
 437                                                 \
 438   if (been_here == 0)                           \
 439     {                                           \
 440       been_here = 1;                            \
 441           /* written, cold -> hot */            \
 442       objc_cat_cls_meth_section ();             \
 443       objc_cat_inst_meth_section ();            \
 444       objc_string_object_section ();            \
 445       objc_constant_string_object_section ();   \
 446       objc_selector_refs_section ();            \
 447       objc_selector_fixup_section ();           \
 448       objc_cls_refs_section ();                 \
 449       objc_class_section ();                    \
 450       objc_meta_class_section ();               \
 451           /* shared, hot -> cold */             \
 452       objc_cls_meth_section ();                 \
 453       objc_inst_meth_section ();                \
 454       objc_protocol_section ();                 \
 455       objc_class_names_section ();              \
 456       objc_meth_var_types_section ();           \
 457       objc_meth_var_names_section ();           \
 458       objc_category_section ();                 \
 459       objc_class_vars_section ();               \
 460       objc_instance_vars_section ();            \
 461       objc_module_info_section ();              \
 462       objc_symbols_section ();                  \
 463     }                                           \
 464 }
 465
 466 #define READONLY_DATA_SECTION const_section
 467
 468 #undef  TARGET_ASM_SELECT_SECTION
 469 #define TARGET_ASM_SELECT_SECTION machopic_select_section
 470 #undef  TARGET_ASM_SELECT_RTX_SECTION
 471 #define TARGET_ASM_SELECT_RTX_SECTION machopic_select_rtx_section
 472
 473 #define ASM_DECLARE_UNRESOLVED_REFERENCE(FILE,NAME)                     \
 474     do {                                                                \
 475          if (FILE) {                                                    \
 476            if (flag_pic)                                                \
 477              fprintf (FILE, "\t.lazy_reference ");                      \
 478            else                                                         \
 479              fprintf (FILE, "\t.reference ");                           \
 480            assemble_name (FILE, NAME);                                  \
 481            fprintf (FILE, "\n");                                        \
 482          }                                                              \
 483        } while (0)
 484
 485 #define ASM_DECLARE_CLASS_REFERENCE(FILE,NAME)                          \
 486     do {                                                                \
 487          if (FILE) {                                                    \
 488            fprintf (FILE, "\t");                                        \
 489            assemble_name (FILE, NAME);                                  \
 490            fprintf (FILE, "=0\n");                                      \
 491            (*targetm.asm_out.globalize_label) (FILE, NAME);             \
 492          }                                                              \
 493        } while (0)
 494
 495 /* Globalizing directive for a label.  */
 496 #define GLOBAL_ASM_OP ".globl "
 497 #define TARGET_ASM_GLOBALIZE_LABEL darwin_globalize_label
 498
 499 #undef ASM_GENERATE_INTERNAL_LABEL
 500 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 501   sprintf (LABEL, "*%s%ld", PREFIX, (long)(NUM))
 502
 503 /* This is how to output an internal numbered label where PREFIX is
 504    the class of label and NUM is the number within the class.  */
 505
 506 #undef ASM_OUTPUT_INTERNAL_LABEL
 507 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
 508   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
 509
 510 /* Since we have a separate readonly data section, define this so that
 511    jump tables end up in text rather than data.  */
 512
 513 #ifndef JUMP_TABLES_IN_TEXT_SECTION
 514 #define JUMP_TABLES_IN_TEXT_SECTION 1
 515 #endif
 516
 517 /* Symbolic names for various things we might know about a symbol.  */
 518
 519 enum machopic_addr_class {
 520   MACHOPIC_UNDEFINED,
 521   MACHOPIC_DEFINED_DATA,
 522   MACHOPIC_UNDEFINED_DATA,
 523   MACHOPIC_DEFINED_FUNCTION,
 524   MACHOPIC_UNDEFINED_FUNCTION
 525 };
 526
 527 /* Macros defining the various PIC cases.  */
 528
 529 #define MACHOPIC_INDIRECT      (flag_pic)
 530 #define MACHOPIC_JUST_INDIRECT (flag_pic == 1)
 531 #define MACHOPIC_PURE          (flag_pic == 2)
 532
 533 #undef TARGET_ENCODE_SECTION_INFO
 534 #define TARGET_ENCODE_SECTION_INFO  darwin_encode_section_info
 535 #undef TARGET_STRIP_NAME_ENCODING
 536 #define TARGET_STRIP_NAME_ENCODING  darwin_strip_name_encoding
 537
 538 #define GEN_BINDER_NAME_FOR_STUB(BUF,STUB,STUB_LENGTH)          \
 539   do {                                                          \
 540     const char *const stub_ = (STUB);                           \
 541     char *buffer_ = (BUF);                                      \
 542     strcpy (buffer_, stub_);                                    \
 543     if (stub_[0] == '"')                                        \
 544       {                                                         \
 545         strcpy (buffer_ + (STUB_LENGTH) - 1, "_binder\"");      \
 546       }                                                         \
 547     else                                                        \
 548       {                                                         \
 549         strcpy (buffer_ + (STUB_LENGTH), "_binder");            \
 550       }                                                         \
 551   } while (0)
 552
 553 #define GEN_SYMBOL_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)    \
 554   do {                                                          \
 555     const char *const symbol_ = (SYMBOL);                       \
 556     char *buffer_ = (BUF);                                      \
 557     if (name_needs_quotes (symbol_) && symbol_[0] != '"')       \
 558       {                                                         \
 559           sprintf (buffer_, "\"%s\"", symbol_);                 \
 560       }                                                         \
 561     else                                                        \
 562       {                                                         \
 563         strcpy (buffer_, symbol_);                              \
 564       }                                                         \
 565   } while (0)
 566
 567 /* Given a symbol name string, create the lazy pointer version
 568    of the symbol name.  */
 569
 570 #define GEN_LAZY_PTR_NAME_FOR_SYMBOL(BUF,SYMBOL,SYMBOL_LENGTH)  \
 571   do {                                                          \
 572     const char *symbol_ = darwin_strip_name_encoding (SYMBOL);  \
 573     char *buffer_ = (BUF);                                      \
 574     if (symbol_[0] == '"')                                      \
 575       {                                                         \
 576         strcpy (buffer_, "\"L");                                \
 577         strcpy (buffer_ + 2, symbol_ + 1);                      \
 578         strcpy (buffer_ + (SYMBOL_LENGTH), "$lazy_ptr\"");      \
 579       }                                                         \
 580     else if (name_needs_quotes (symbol_))                       \
 581       {                                                         \
 582         strcpy (buffer_, "\"L");                                \
 583         strcpy (buffer_ + 2, symbol_);                          \
 584         strcpy (buffer_ + (SYMBOL_LENGTH) + 2, "$lazy_ptr\"");  \
 585       }                                                         \
 586     else                                                        \
 587       {                                                         \
 588         strcpy (buffer_, "L");                                  \
 589         strcpy (buffer_ + 1, symbol_);                          \
 590         strcpy (buffer_ + (SYMBOL_LENGTH) + 1, "$lazy_ptr");    \
 591       }                                                         \
 592   } while (0)
 593
 594 #define TARGET_ASM_EXCEPTION_SECTION darwin_exception_section
 595
 596 #define TARGET_ASM_EH_FRAME_SECTION darwin_eh_frame_section
 597
 598 #undef ASM_PREFERRED_EH_DATA_FORMAT
 599 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL)  \
 600   (((CODE) == 1 || (GLOBAL) == 0) ? DW_EH_PE_pcrel : DW_EH_PE_absptr)
 601
 602 #define DARWIN_REGISTER_TARGET_PRAGMAS(PFILE)                           \
 603   do {                                                                  \
 604     cpp_register_pragma (PFILE, 0, "mark", darwin_pragma_ignore);       \
 605     cpp_register_pragma (PFILE, 0, "options", darwin_pragma_options);   \
 606     cpp_register_pragma (PFILE, 0, "segment", darwin_pragma_ignore);    \
 607     cpp_register_pragma (PFILE, 0, "unused", darwin_pragma_unused);     \
 608   } while (0)
 609
 610 #undef ASM_APP_ON
 611 #define ASM_APP_ON ""
 612 #undef ASM_APP_OFF
 613 #define ASM_APP_OFF ""