gcc/config/i386/cygwin.h

   1 /* Operating system specific defines to be used when targeting GCC for
   2    hosting on Windows NT 3.x, using a Unix style C library and tools,
   3    as distinct from winnt.h, which is used to build GCC for use with a
   4    windows style library and tool set and uses the Microsoft tools.
   5    Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
   6
   7 This file is part of GNU CC.
   8
   9 GNU CC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GNU CC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GNU CC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, USA. */
  23
  24 #define YES_UNDERSCORES
  25
  26 #define DBX_DEBUGGING_INFO
  27 #define SDB_DEBUGGING_INFO
  28 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  29
  30 #include "i386/gas.h"
  31 #include "dbxcoff.h"
  32
  33 /* Augment TARGET_SWITCHES with the cygwin/no-cygwin options. */
  34 #define MASK_WIN32 0x40000000 /* Use -lming32 interface */
  35 #define MASK_CYGWIN  0x20000000 /* Use -lcygwin interface */
  36 #define MASK_WINDOWS 0x10000000 /* Use windows interface */
  37 #define MASK_DLL     0x08000000 /* Use dll interface    */
  38 #define MASK_NOP_FUN_DLLIMPORT 0x20000 /* Ignore dllimport for functions */
  39
  40 #define TARGET_WIN32             (target_flags & MASK_WIN32)
  41 #define TARGET_CYGWIN            (target_flags & MASK_CYGWIN)
  42 #define TARGET_WINDOWS           (target_flags & MASK_WINDOWS)
  43 #define TARGET_DLL               (target_flags & MASK_DLL)
  44 #define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT)
  45
  46 #undef  SUBTARGET_SWITCHES
  47 #define SUBTARGET_SWITCHES \
  48 { "no-cygwin",                       MASK_WIN32, "Use the Mingw32 interface" }, \
  49 { "cygwin",                          MASK_CYGWIN, "Use the Cygwin interface" },  \
  50 { "windows",                         MASK_WINDOWS, "Use the bare Windows interface" }, \
  51 { "dll",                             MASK_DLL, "Generate code for a DLL" },     \
  52 { "nop-fun-dllimport",               MASK_NOP_FUN_DLLIMPORT, "Ignore dllimport for functions" }, \
  53 { "no-nop-fun-dllimport",            MASK_NOP_FUN_DLLIMPORT, "" },
  54
  55
  56 /* Support the __declspec keyword by turning them into attributes.
  57    We currently only support: dllimport and dllexport.
  58    Note that the current way we do this may result in a collision with
  59    predefined attributes later on.  This can be solved by using one attribute,
  60    say __declspec__, and passing args to it.  The problem with that approach
  61    is that args are not accumulated: each new appearance would clobber any
  62    existing args.  */
  63
  64 #ifdef CPP_PREDEFINES
  65 #undef CPP_PREDEFINES
  66 #endif
  67
  68 #define CPP_PREDEFINES "-Di386 -D_WIN32 \
  69   -DWINNT  -D_X86_=1 -D__STDC__=1\
  70   -D__stdcall=__attribute__((__stdcall__)) \
  71   -D__cdecl=__attribute__((__cdecl__)) \
  72   -D__declspec(x)=__attribute__((x)) \
  73   -Asystem(winnt) -Acpu(i386) -Amachine(i386)"
  74
  75 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we
  76    want to allow things to be added to it when installing new versions of
  77    GCC without making a new CYGWIN.DLL, so we leave it.  Profiling is handled
  78    by calling the init function from the prologue. */
  79
  80 #undef STARTFILE_SPEC
  81 #define STARTFILE_SPEC "%{mdll: %{!mno-cygwin:dllcrt0%O%s} \
  82                                 %{mno-cygwin:dllcrt1%O%s}} \
  83                         %{!mdll: %{!mno-cygwin:crt0%O%s} \
  84                                  %{mno-cygwin:crt1%O%s} %{pg:gcrt0%O%s}}"
  85
  86 #undef CPP_SPEC
  87 #define CPP_SPEC "-remap %(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
  88   %{!mno-cygwin:-D__CYGWIN32__ -D__CYGWIN__} \
  89   %{mno-cygwin:-iwithprefixbefore \
  90     ../../../../%(mingw_include_path)/include/mingw32 -D__MINGW32__=0.2}"
  91
  92 /* This macro defines names of additional specifications to put in the specs
  93    that can be used in various specifications like CC1_SPEC.  Its definition
  94    is an initializer with a subgrouping for each command option.
  95
  96    Each subgrouping contains a string constant, that defines the
  97    specification name, and a string constant that used by the GNU CC driver
  98    program.
  99
 100    Do not define this macro if it does not need to do anything.  */
 101
 102 #undef  SUBTARGET_EXTRA_SPECS
 103 #define SUBTARGET_EXTRA_SPECS                                           \
 104   { "mingw_include_path", DEFAULT_TARGET_MACHINE }
 105
 106 /* We have to dynamic link to get to the system DLLs.  All of libc, libm and
 107    the Unix stuff is in cygwin.dll.  The import library is called
 108    'libcygwin.a'.  For Windows applications, include more libraries, but
 109    always include kernel32.  We'd like to specific subsystem windows to
 110    ld, but that doesn't work just yet.  */
 111
 112 #undef LIB_SPEC
 113 #define LIB_SPEC "%{pg:-lgmon} \
 114                   %{!mno-cygwin:-lcygwin} \
 115                   %{mno-cygwin:-lmingw32 -lmoldname -lcrtdll} \
 116                   %{mwindows:-lgdi32 -lcomdlg32} \
 117                   -luser32 -lkernel32 -ladvapi32 -lshell32"
 118
 119 #define LINK_SPEC "%{mwindows:--subsystem windows} \
 120                    %{mdll:--dll -e _DllMainCRTStartup@12}"
 121
 122
 123 #define SIZE_TYPE "unsigned int"
 124 #define PTRDIFF_TYPE "int"
 125 #define WCHAR_UNSIGNED 1
 126 #define WCHAR_TYPE_SIZE 16
 127 #define WCHAR_TYPE "short unsigned int"
 128
 129 #define HAVE_ATEXIT 1
 130
 131 \f
 132 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
 133 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
 134
 135 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
 136    is a valid machine specific attribute for DECL.
 137    The attributes in ATTRIBUTES have previously been assigned to DECL.  */
 138 extern int i386_pe_valid_decl_attribute_p ();
 139
 140 #undef VALID_MACHINE_DECL_ATTRIBUTE
 141 #define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
 142   i386_pe_valid_decl_attribute_p (DECL, ATTRIBUTES, IDENTIFIER, ARGS)
 143
 144 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
 145    is a valid machine specific attribute for TYPE.
 146    The attributes in ATTRIBUTES have previously been assigned to TYPE.  */
 147
 148 #undef VALID_MACHINE_TYPE_ATTRIBUTE
 149 #define VALID_MACHINE_TYPE_ATTRIBUTE(TYPE, ATTRIBUTES, IDENTIFIER, ARGS) \
 150   i386_pe_valid_type_attribute_p (TYPE, ATTRIBUTES, IDENTIFIER, ARGS)
 151 extern int i386_pe_valid_type_attribute_p ();
 152
 153 extern union tree_node *i386_pe_merge_decl_attributes ();
 154 #define MERGE_MACHINE_DECL_ATTRIBUTES(OLD, NEW) \
 155   i386_pe_merge_decl_attributes ((OLD), (NEW))
 156
 157 /* Used to implement dllexport overriding dllimport semantics.  It's also used
 158    to handle vtables - the first pass won't do anything because
 159    DECL_CONTEXT (DECL) will be 0 so i386_pe_dll{ex,im}port_p will return 0.
 160    It's also used to handle dllimport override semantics.  */
 161 #if 0
 162 #define REDO_SECTION_INFO_P(DECL) \
 163   ((DECL_MACHINE_ATTRIBUTES (DECL) != NULL_TREE) \
 164    || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL)))
 165 #else
 166 #define REDO_SECTION_INFO_P(DECL) 1
 167 #endif
 168
 169 \f
 170 #undef EXTRA_SECTIONS
 171 #define EXTRA_SECTIONS in_ctor, in_dtor, in_drectve
 172
 173 #undef EXTRA_SECTION_FUNCTIONS
 174 #define EXTRA_SECTION_FUNCTIONS                                 \
 175   CTOR_SECTION_FUNCTION                                         \
 176   DTOR_SECTION_FUNCTION                                         \
 177   DRECTVE_SECTION_FUNCTION                                      \
 178   SWITCH_TO_SECTION_FUNCTION
 179
 180 #define CTOR_SECTION_FUNCTION                                   \
 181 void                                                            \
 182 ctor_section ()                                                 \
 183 {                                                               \
 184   if (in_section != in_ctor)                                    \
 185     {                                                           \
 186       fprintf (asm_out_file, "\t.section .ctor\n");             \
 187       in_section = in_ctor;                                     \
 188     }                                                           \
 189 }
 190
 191 #define DTOR_SECTION_FUNCTION                                   \
 192 void                                                            \
 193 dtor_section ()                                                 \
 194 {                                                               \
 195   if (in_section != in_dtor)                                    \
 196     {                                                           \
 197       fprintf (asm_out_file, "\t.section .dtor\n");             \
 198       in_section = in_dtor;                                     \
 199     }                                                           \
 200 }
 201
 202 #define DRECTVE_SECTION_FUNCTION \
 203 void                                                                    \
 204 drectve_section ()                                                      \
 205 {                                                                       \
 206   if (in_section != in_drectve)                                         \
 207     {                                                                   \
 208       fprintf (asm_out_file, "%s\n", "\t.section .drectve\n");          \
 209       in_section = in_drectve;                                          \
 210     }                                                                   \
 211 }
 212
 213 /* Switch to SECTION (an `enum in_section').
 214
 215    ??? This facility should be provided by GCC proper.
 216    The problem is that we want to temporarily switch sections in
 217    ASM_DECLARE_OBJECT_NAME and then switch back to the original section
 218    afterwards.  */
 219 #define SWITCH_TO_SECTION_FUNCTION                              \
 220 void                                                            \
 221 switch_to_section (section, decl)                               \
 222      enum in_section section;                                   \
 223      tree decl;                                                 \
 224 {                                                               \
 225   switch (section)                                              \
 226     {                                                           \
 227       case in_text: text_section (); break;                     \
 228       case in_data: data_section (); break;                     \
 229       case in_named: named_section (decl, NULL, 0); break;      \
 230       case in_ctor: ctor_section (); break;                     \
 231       case in_dtor: dtor_section (); break;                     \
 232       case in_drectve: drectve_section (); break;               \
 233       default: abort (); break;                                 \
 234     }                                                           \
 235 }
 236
 237 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)       \
 238   do {                                          \
 239     ctor_section ();                            \
 240     fprintf (FILE, "%s\t", ASM_LONG);           \
 241     assemble_name (FILE, NAME);                 \
 242     fprintf (FILE, "\n");                       \
 243   } while (0)
 244
 245 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)        \
 246   do {                                          \
 247     dtor_section ();                            \
 248     fprintf (FILE, "%s\t", ASM_LONG);           \
 249     assemble_name (FILE, NAME);                 \
 250     fprintf (FILE, "\n");                       \
 251   } while (0)
 252
 253 /* Don't allow flag_pic to propagate since gas may produce invalid code
 254    otherwise. */
 255
 256 #undef  SUBTARGET_OVERRIDE_OPTIONS
 257 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
 258 do {                                                                    \
 259   if (flag_pic)                                                         \
 260     {                                                                   \
 261       warning ("-f%s ignored for target (all code is position independent)",\
 262                (flag_pic > 1) ? "PIC" : "pic");                         \
 263       flag_pic = 0;                                                     \
 264     }                                                                   \
 265 } while (0)                                                             \
 266
 267 /* Define this macro if references to a symbol must be treated
 268    differently depending on something about the variable or
 269    function named by the symbol (such as what section it is in).
 270
 271    On i386 running Windows NT, modify the assembler name with a suffix
 272    consisting of an atsign (@) followed by string of digits that represents
 273    the number of bytes of arguments passed to the function, if it has the
 274    attribute STDCALL.
 275
 276    In addition, we must mark dll symbols specially. Definitions of
 277    dllexport'd objects install some info in the .drectve section.
 278    References to dllimport'd objects are fetched indirectly via
 279    _imp__.  If both are declared, dllexport overrides.  This is also
 280    needed to implement one-only vtables: they go into their own
 281    section and we need to set DECL_SECTION_NAME so we do that here.
 282    Note that we can be called twice on the same decl.  */
 283
 284 extern void i386_pe_encode_section_info ();
 285
 286 #ifdef ENCODE_SECTION_INFO
 287 #undef ENCODE_SECTION_INFO
 288 #endif
 289 #define ENCODE_SECTION_INFO(DECL) i386_pe_encode_section_info (DECL)
 290
 291 /* Utility used only in this file.  */
 292 #define I386_PE_STRIP_ENCODING(SYM_NAME) \
 293   ((SYM_NAME) + ((SYM_NAME)[0] == '@' ? 3 : 0))
 294
 295 /* This macro gets just the user-specified name
 296    out of the string in a SYMBOL_REF.  Discard
 297    trailing @[NUM] encoded by ENCODE_SECTION_INFO.  */
 298 #undef  STRIP_NAME_ENCODING
 299 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)                            \
 300 do {                                                                    \
 301   char *_p;                                                             \
 302   char *_name = I386_PE_STRIP_ENCODING (SYMBOL_NAME);                   \
 303   for (_p = _name; *_p && *_p != '@'; ++_p)                             \
 304     ;                                                                   \
 305   if (*_p == '@')                                                       \
 306     {                                                                   \
 307       int _len = _p - _name;                                            \
 308       (VAR) = (char *) alloca (_len + 1);                               \
 309       strncpy ((VAR), _name, _len);                                     \
 310       (VAR)[_len] = '\0';                                               \
 311     }                                                                   \
 312   else                                                                  \
 313     (VAR) = _name;                                                      \
 314 } while (0)
 315
 316 \f
 317 /* Output a reference to a label.  */
 318 #undef ASM_OUTPUT_LABELREF
 319 #define ASM_OUTPUT_LABELREF(STREAM, NAME)               \
 320   fprintf (STREAM, "%s%s", USER_LABEL_PREFIX,           \
 321            I386_PE_STRIP_ENCODING (NAME))               \
 322
 323 /* Output a common block.  */
 324 #undef ASM_OUTPUT_COMMON
 325 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 326 do {                                                    \
 327   if (i386_pe_dllexport_name_p (NAME))                  \
 328     {                                                   \
 329       drectve_section ();                               \
 330       fprintf ((STREAM), "\t.ascii \" -export:%s\"\n",  \
 331                I386_PE_STRIP_ENCODING (NAME));          \
 332     }                                                   \
 333   if (! i386_pe_dllimport_name_p (NAME))                \
 334     {                                                   \
 335       fprintf ((STREAM), "\t.comm\t");                  \
 336       assemble_name ((STREAM), (NAME));                 \
 337       fprintf ((STREAM), ", %d\t%s %d\n",               \
 338                (ROUNDED), ASM_COMMENT_START, (SIZE));   \
 339     }                                                   \
 340 } while (0)
 341
 342 /* Output the label for an initialized variable.  */
 343 #undef ASM_DECLARE_OBJECT_NAME
 344 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)     \
 345 do {                                                    \
 346   if (i386_pe_dllexport_name_p (NAME))                  \
 347     {                                                   \
 348       enum in_section save_section = in_section;        \
 349       drectve_section ();                               \
 350       fprintf ((STREAM), "\t.ascii \" -export:%s\"\n",  \
 351                I386_PE_STRIP_ENCODING (NAME));          \
 352       switch_to_section (save_section, (DECL));         \
 353     }                                                   \
 354   ASM_OUTPUT_LABEL ((STREAM), (NAME));                  \
 355 } while (0)
 356
 357 \f
 358 /* Emit code to check the stack when allocating more that 4000
 359    bytes in one go. */
 360
 361 #define CHECK_STACK_LIMIT 4000
 362
 363 /* By default, target has a 80387, uses IEEE compatible arithmetic,
 364    and returns float values in the 387 and needs stack probes */
 365 #undef TARGET_DEFAULT
 366
 367 #define TARGET_DEFAULT \
 368    (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
 369
 370 /* This is how to output an assembler line
 371    that says to advance the location counter
 372    to a multiple of 2**LOG bytes.  */
 373
 374 #undef ASM_OUTPUT_ALIGN
 375 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 376     if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
 377
 378 /* Define this macro if in some cases global symbols from one translation
 379    unit may not be bound to undefined symbols in another translation unit
 380    without user intervention.  For instance, under Microsoft Windows
 381    symbols must be explicitly imported from shared libraries (DLLs).  */
 382 #define MULTIPLE_SYMBOL_SPACES
 383
 384 #define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
 385 extern void i386_pe_unique_section ();
 386 #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
 387
 388 #define SUPPORTS_ONE_ONLY 1
 389
 390 /* A C statement to output something to the assembler file to switch to section
 391    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
 392    NULL_TREE.  Some target formats do not support arbitrary sections.  Do not
 393    define this macro in such cases.  */
 394 #undef ASM_OUTPUT_SECTION_NAME
 395 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC)              \
 396 do {                                                                    \
 397   static struct section_info                                            \
 398     {                                                                   \
 399       struct section_info *next;                                        \
 400       char *name;                                                       \
 401       enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type;                \
 402     } *sections;                                                        \
 403   struct section_info *s;                                               \
 404   char *mode;                                                           \
 405   enum sect_enum type;                                                  \
 406                                                                         \
 407   for (s = sections; s; s = s->next)                                    \
 408     if (!strcmp (NAME, s->name))                                        \
 409       break;                                                            \
 410                                                                         \
 411   if (DECL && TREE_CODE (DECL) == FUNCTION_DECL)                        \
 412     type = SECT_EXEC, mode = "x";                                       \
 413   else if (DECL && DECL_READONLY_SECTION (DECL, RELOC))                 \
 414     type = SECT_RO, mode = "";                                          \
 415   else                                                                  \
 416     type = SECT_RW, mode = "w";                                         \
 417                                                                         \
 418   if (s == 0)                                                           \
 419     {                                                                   \
 420       s = (struct section_info *) xmalloc (sizeof (struct section_info)); \
 421       s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME));         \
 422       strcpy (s->name, NAME);                                           \
 423       s->type = type;                                                   \
 424       s->next = sections;                                               \
 425       sections = s;                                                     \
 426       fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);            \
 427       /* Functions may have been compiled at various levels of          \
 428          optimization so we can't use `same_size' here.  Instead,       \
 429          have the linker pick one.  */                                  \
 430       if ((DECL) && DECL_ONE_ONLY (DECL))                               \
 431         fprintf (STREAM, "\t.linkonce %s\n",                            \
 432                  TREE_CODE (DECL) == FUNCTION_DECL                      \
 433                  ? "discard" : "same_size");                            \
 434     }                                                                   \
 435   else                                                                  \
 436     {                                                                   \
 437       fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);            \
 438     }                                                                   \
 439 } while (0)
 440
 441 /* Write the extra assembler code needed to declare a function
 442    properly.  If we are generating SDB debugging information, this
 443    will happen automatically, so we only need to handle other cases.  */
 444 #undef ASM_DECLARE_FUNCTION_NAME
 445 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 446   do                                                                    \
 447     {                                                                   \
 448       if (i386_pe_dllexport_name_p (NAME))                              \
 449         {                                                               \
 450           drectve_section ();                                           \
 451           fprintf ((FILE), "\t.ascii \" -export:%s\"\n",                \
 452                    I386_PE_STRIP_ENCODING (NAME));                      \
 453           function_section (DECL);                                      \
 454         }                                                               \
 455       if (write_symbols != SDB_DEBUG)                                   \
 456         i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
 457       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 458     }                                                                   \
 459   while (0)
 460
 461 /* Add an external function to the list of functions to be declared at
 462    the end of the file.  */
 463 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                           \
 464   do                                                                    \
 465     {                                                                   \
 466       if (TREE_CODE (DECL) == FUNCTION_DECL)                            \
 467         i386_pe_record_external_function (NAME);                        \
 468     }                                                                   \
 469   while (0)
 470
 471 /* Declare the type properly for any external libcall.  */
 472 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
 473   i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
 474
 475 /* Output function declarations at the end of the file.  */
 476 #define ASM_FILE_END(FILE) \
 477   i386_pe_asm_file_end (FILE)
 478
 479 #undef ASM_COMMENT_START
 480 #define ASM_COMMENT_START " #"
 481
 482 /* DWARF2 Unwinding doesn't work with exception handling yet. */
 483 #define DWARF2_UNWIND_INFO 0
 484
 485 /* Don't assume anything about the header files. */
 486 #define NO_IMPLICIT_EXTERN_C
 487
 488 #define SUBTARGET_PROLOGUE                                              \
 489   if (profile_flag                                                      \
 490       && strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)),\
 491                  "main") == 0)                                          \
 492      {                                                                  \
 493       rtx xops[1];                                                      \
 494       xops[0] = gen_rtx_MEM (FUNCTION_MODE,                             \
 495                          gen_rtx (SYMBOL_REF, Pmode, "_monstartup"));   \
 496       if (do_rtl)                                                       \
 497         emit_call_insn (gen_rtx (CALL, VOIDmode, xops[0], const0_rtx)); \
 498       else                                                              \
 499         output_asm_insn (AS1 (call,%P1), xops);                 \
 500      }
 501
 502 /* External function declarations.  */
 503
 504 #ifndef PROTO
 505 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
 506 #define PROTO(ARGS) ARGS
 507 #else
 508 #define PROTO(ARGS) ()
 509 #endif
 510 #endif
 511
 512 #ifdef BUFSIZ           /* stdio.h has been included, ok to use FILE * */
 513 #define STDIO_PROTO(ARGS) PROTO(ARGS)
 514 #else
 515 #define STDIO_PROTO(ARGS) ()
 516 #endif
 517
 518 extern void i386_pe_record_external_function PROTO((char *));
 519 extern void i386_pe_declare_function_type STDIO_PROTO((FILE *, char *, int));
 520 extern void i386_pe_asm_file_end STDIO_PROTO((FILE *));
 521
 522 /* For Win32 ABI compatibility */
 523 #undef DEFAULT_PCC_STRUCT_RETURN
 524 #define DEFAULT_PCC_STRUCT_RETURN 0
 525
 526 /* No data type wants to be aligned rounder than this.  */
 527 #undef  BIGGEST_ALIGNMENT
 528 #define BIGGEST_ALIGNMENT 128
 529
 530 /* A bitfield declared as `int' forces `int' alignment for the struct.  */
 531 #undef PCC_BITFIELDS_TYPE_MATTERS
 532 #define PCC_BITFIELDS_TYPE_MATTERS 0
 533