gcc/config/i386/cygwin.h

   1 /* Operating system specific defines to be used when targeting GCC for
   2    hosting on Windows32, using a Unix style C library and tools.
   3    Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
   4    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 #define YES_UNDERSCORES
  24
  25 #define DBX_DEBUGGING_INFO
  26 #define SDB_DEBUGGING_INFO
  27 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
  28
  29 #define TARGET_EXECUTABLE_SUFFIX ".exe"
  30
  31 #include <stdio.h>
  32 #include "i386/gas.h"
  33 #include "dbxcoff.h"
  34
  35 /* Augment TARGET_SWITCHES with the cygwin/no-cygwin options. */
  36 #define MASK_WIN32 0x40000000 /* Use -lming32 interface */
  37 #define MASK_CYGWIN  0x20000000 /* Use -lcygwin interface */
  38 #define MASK_WINDOWS 0x10000000 /* Use windows interface */
  39 #define MASK_DLL     0x08000000 /* Use dll interface    */
  40 #define MASK_NOP_FUN_DLLIMPORT 0x20000 /* Ignore dllimport for functions */
  41
  42 #define TARGET_WIN32             (target_flags & MASK_WIN32)
  43 #define TARGET_CYGWIN            (target_flags & MASK_CYGWIN)
  44 #define TARGET_WINDOWS           (target_flags & MASK_WINDOWS)
  45 #define TARGET_DLL               (target_flags & MASK_DLL)
  46 #define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT)
  47
  48 #undef  SUBTARGET_SWITCHES
  49 #define SUBTARGET_SWITCHES \
  50 { "cygwin",               MASK_CYGWIN,                                  \
  51   N_("Use the Cygwin interface") },                                     \
  52 { "no-cygwin",            MASK_WIN32,                                   \
  53   N_("Use the Mingw32 interface") },                                    \
  54 { "windows",              MASK_WINDOWS, N_("Create GUI application") }, \
  55 { "no-win32",             -MASK_WIN32, N_("Don't set Windows defines") },\
  56 { "win32",                0, N_("Set Windows defines") },               \
  57 { "console",              -MASK_WINDOWS,                                \
  58   N_("Create console application") },                                   \
  59 { "dll",                  MASK_DLL, N_("Generate code for a DLL") },    \
  60 { "nop-fun-dllimport",    MASK_NOP_FUN_DLLIMPORT,                       \
  61   N_("Ignore dllimport for functions") },                               \
  62 { "no-nop-fun-dllimport", -MASK_NOP_FUN_DLLIMPORT, "" }, \
  63 { "threads",              0, N_("Use Mingw-specific thread support") },
  64
  65 #undef CPP_PREDEFINES
  66 #define CPP_PREDEFINES "-D_X86_=1 -Asystem=winnt"
  67
  68 #ifdef CROSS_COMPILE
  69 #define CYGWIN_INCLUDES "-idirafter " CYGWIN_CROSS_DIR "/include"
  70 #define W32API_INC "-idirafter " CYGWIN_CROSS_DIR "/include/w32api"
  71 #define W32API_LIB "-L" CYGWIN_CROSS_DIR "/lib/w32api/"
  72 #define CYGWIN_LIB CYGWIN_CROSS_DIR "/lib"
  73 #define MINGW_LIBS "-L" CYGWIN_CROSS_DIR "/lib/mingw"
  74 #define MINGW_INCLUDES "-isystem " CYGWIN_CROSS_DIR "/include/mingw/g++-3 "\
  75                        "-isystem " CYGWIN_CROSS_DIR "/include/mingw/g++ "\
  76                        "-idirafter " CYGWIN_CROSS_DIR "/include/mingw"
  77 #else
  78 #define CYGWIN_INCLUDES "-isystem /usr/local/include -idirafter /usr/include"
  79 #define W32API_INC "-idirafter /usr/include/w32api"
  80 #define W32API_LIB "-L/usr/lib/w32api/"
  81 #define CYGWIN_LIB "/usr/lib"
  82 #define MINGW_LIBS "-L/usr/local/lib/mingw -L/usr/lib/mingw"
  83 #define MINGW_INCLUDES "-isystem /usr/include/mingw/g++-3 "\
  84                        "-isystem /usr/include/mingw/g++ "\
  85                        "-isystem /usr/local/include/mingw" \
  86                        "-idirafter /usr/include/mingw"
  87 #endif
  88
  89 /* Support the __declspec keyword by turning them into attributes.
  90    We currently only support: dllimport and dllexport.
  91    Note that the current way we do this may result in a collision with
  92    predefined attributes later on.  This can be solved by using one attribute,
  93    say __declspec__, and passing args to it.  The problem with that approach
  94    is that args are not accumulated: each new appearance would clobber any
  95    existing args.  */
  96
  97 #undef CPP_SPEC
  98 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
  99   -D__stdcall=__attribute__((__stdcall__)) \
 100   -D__cdecl=__attribute__((__cdecl__)) \
 101   %{!ansi:-D_stdcall=__attribute__((__stdcall__)) \
 102     -D_cdecl=__attribute__((__cdecl__))} \
 103   -D__declspec(x)=__attribute__((x)) \
 104   -D__i386__ -D__i386 \
 105   %{mno-win32:%{mno-cygwin: %emno-cygwin and mno-win32 are not compatible}} \
 106   %{mno-cygwin:-D__MSVCRT__ -D__MINGW32__ %{mthreads:-D_MT} "\
 107     MINGW_INCLUDES "} \
 108   %{!mno-cygwin:-D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix__ -D__unix "\
 109     CYGWIN_INCLUDES "}\
 110   %{mwin32|mno-cygwin:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ -DWINNT}\
 111   %{!mno-win32:" W32API_INC "}\
 112 "
 113
 114 #undef STARTFILE_SPEC
 115 #define STARTFILE_SPEC "\
 116   %{shared|mdll: %{mno-cygwin:" MINGW_LIBS " mingw/dllcrt2%O%s}}\
 117   %{!shared: %{!mdll: %{!mno-cygwin:crt0%O%s} %{mno-cygwin:" MINGW_LIBS " mingw/crt2%O%s}\
 118   %{pg:gcrt0%O%s}}}\
 119 "
 120
 121 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we
 122    want to allow things to be added to it when installing new versions of
 123    GCC without making a new CYGWIN.DLL, so we leave it.  Profiling is handled
 124    by calling the init function from the prologue. */
 125
 126 #undef LIBGCC_SPEC
 127 #define LIBGCC_SPEC "%{mno-cygwin: %{mthreads:-lmingwthrd} -lmingw32} -lgcc %{mno-cygwin:-lmoldname -lmsvcrt}"
 128
 129 /* This macro defines names of additional specifications to put in the specs
 130    that can be used in various specifications like CC1_SPEC.  Its definition
 131    is an initializer with a subgrouping for each command option.
 132
 133    Each subgrouping contains a string constant, that defines the
 134    specification name, and a string constant that used by the GNU CC driver
 135    program.
 136
 137    Do not define this macro if it does not need to do anything.  */
 138
 139 #undef  SUBTARGET_EXTRA_SPECS
 140 #define SUBTARGET_EXTRA_SPECS                                           \
 141   { "mingw_include_path", DEFAULT_TARGET_MACHINE }
 142
 143 /* We have to dynamic link to get to the system DLLs.  All of libc, libm and
 144    the Unix stuff is in cygwin.dll.  The import library is called
 145    'libcygwin.a'.  For Windows applications, include more libraries, but
 146    always include kernel32.  We'd like to specific subsystem windows to
 147    ld, but that doesn't work just yet.  */
 148
 149 #undef LIB_SPEC
 150 #define LIB_SPEC "\
 151   %{pg:-lgmon} \
 152   %{!mno-cygwin:-lcygwin} \
 153   %{mno-cygwin:%{mthreads:-lmingwthrd} -lmingw32} \
 154   %{mwindows:-lgdi32 -lcomdlg32} \
 155   -luser32 -lkernel32 -ladvapi32 -lshell32"
 156
 157 #define LINK_SPEC W32API_LIB "\
 158   %{mwindows:--subsystem windows} \
 159   %{mconsole:--subsystem console} \
 160   %{shared: %{mdll: %eshared and mdll are not compatible}} \
 161   %{shared: --shared} %{mdll:--dll} \
 162   %{static:-Bstatic} %{!static:-Bdynamic} \
 163   %{shared|mdll: -e \
 164     %{mno-cygwin:_DllMainCRTStartup@12} \
 165     %{!mno-cygwin:__cygwin_dll_entry@12}}\
 166   --dll-search-prefix=cyg"
 167
 168 #undef MATH_LIBRARY
 169 #define MATH_LIBRARY ""
 170
 171 #define SIZE_TYPE "unsigned int"
 172 #define PTRDIFF_TYPE "int"
 173 #define WCHAR_UNSIGNED 1
 174 #define WCHAR_TYPE_SIZE 16
 175 #define WCHAR_TYPE "short unsigned int"
 176
 177 \f
 178 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
 179 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
 180
 181 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
 182    is a valid machine specific attribute for DECL.
 183    The attributes in ATTRIBUTES have previously been assigned to DECL.  */
 184
 185 union tree_node;
 186 #define TREE union tree_node *
 187
 188 #undef VALID_MACHINE_DECL_ATTRIBUTE
 189 #define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
 190   i386_pe_valid_decl_attribute_p (DECL, ATTRIBUTES, IDENTIFIER, ARGS)
 191 extern int i386_pe_valid_decl_attribute_p PARAMS ((TREE, TREE, TREE, TREE));
 192
 193 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
 194    is a valid machine specific attribute for TYPE.
 195    The attributes in ATTRIBUTES have previously been assigned to TYPE.  */
 196
 197 #undef VALID_MACHINE_TYPE_ATTRIBUTE
 198 #define VALID_MACHINE_TYPE_ATTRIBUTE(TYPE, ATTRIBUTES, IDENTIFIER, ARGS) \
 199   i386_pe_valid_type_attribute_p (TYPE, ATTRIBUTES, IDENTIFIER, ARGS)
 200 extern int i386_pe_valid_type_attribute_p PARAMS ((TREE, TREE, TREE, TREE));
 201
 202 extern union tree_node *i386_pe_merge_decl_attributes PARAMS ((TREE, TREE));
 203 #define MERGE_MACHINE_DECL_ATTRIBUTES(OLD, NEW) \
 204   i386_pe_merge_decl_attributes ((OLD), (NEW))
 205 extern TREE i386_pe_merge_decl_attributes PARAMS ((TREE, TREE));
 206
 207 /* Used to implement dllexport overriding dllimport semantics.  It's also used
 208    to handle vtables - the first pass won't do anything because
 209    DECL_CONTEXT (DECL) will be 0 so i386_pe_dll{ex,im}port_p will return 0.
 210    It's also used to handle dllimport override semantics.  */
 211 #if 0
 212 #define REDO_SECTION_INFO_P(DECL) \
 213   ((DECL_MACHINE_ATTRIBUTES (DECL) != NULL_TREE) \
 214    || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL)))
 215 #else
 216 #define REDO_SECTION_INFO_P(DECL) 1
 217 #endif
 218
 219 \f
 220 #undef EXTRA_SECTIONS
 221 #define EXTRA_SECTIONS in_ctor, in_dtor, in_drectve
 222
 223 #undef EXTRA_SECTION_FUNCTIONS
 224 #define EXTRA_SECTION_FUNCTIONS                                 \
 225   CTOR_SECTION_FUNCTION                                         \
 226   DTOR_SECTION_FUNCTION                                         \
 227   DRECTVE_SECTION_FUNCTION                                      \
 228   SWITCH_TO_SECTION_FUNCTION
 229
 230 #define CTOR_SECTION_FUNCTION                                   \
 231 void                                                            \
 232 ctor_section ()                                                 \
 233 {                                                               \
 234   if (in_section != in_ctor)                                    \
 235     {                                                           \
 236       fprintf (asm_out_file, "\t.section .ctor\n");             \
 237       in_section = in_ctor;                                     \
 238     }                                                           \
 239 }
 240 void ctor_section PARAMS ((void));
 241
 242 #define DTOR_SECTION_FUNCTION                                   \
 243 void                                                            \
 244 dtor_section ()                                                 \
 245 {                                                               \
 246   if (in_section != in_dtor)                                    \
 247     {                                                           \
 248       fprintf (asm_out_file, "\t.section .dtor\n");             \
 249       in_section = in_dtor;                                     \
 250     }                                                           \
 251 }
 252 void dtor_section PARAMS ((void));
 253
 254 #define DRECTVE_SECTION_FUNCTION \
 255 void                                                                    \
 256 drectve_section ()                                                      \
 257 {                                                                       \
 258   if (in_section != in_drectve)                                         \
 259     {                                                                   \
 260       fprintf (asm_out_file, "%s\n", "\t.section .drectve\n");          \
 261       in_section = in_drectve;                                          \
 262     }                                                                   \
 263 }
 264 void drectve_section PARAMS ((void));
 265
 266 /* Switch to SECTION (an `enum in_section').
 267
 268    ??? This facility should be provided by GCC proper.
 269    The problem is that we want to temporarily switch sections in
 270    ASM_DECLARE_OBJECT_NAME and then switch back to the original section
 271    afterwards.  */
 272 #define SWITCH_TO_SECTION_FUNCTION                              \
 273 void switch_to_section PARAMS ((enum in_section, tree));        \
 274 void                                                            \
 275 switch_to_section (section, decl)                               \
 276      enum in_section section;                                   \
 277      tree decl;                                                 \
 278 {                                                               \
 279   switch (section)                                              \
 280     {                                                           \
 281       case in_text: text_section (); break;                     \
 282       case in_data: data_section (); break;                     \
 283       case in_named: named_section (decl, NULL, 0); break;      \
 284       case in_ctor: ctor_section (); break;                     \
 285       case in_dtor: dtor_section (); break;                     \
 286       case in_drectve: drectve_section (); break;               \
 287       default: abort (); break;                                 \
 288     }                                                           \
 289 }
 290
 291 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)       \
 292   do {                                          \
 293     ctor_section ();                            \
 294     fputs (ASM_LONG, FILE);                     \
 295     assemble_name (FILE, NAME);                 \
 296     fprintf (FILE, "\n");                       \
 297   } while (0)
 298
 299 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)        \
 300   do {                                          \
 301     dtor_section ();                            \
 302     fputs (ASM_LONG, FILE);                     \
 303     assemble_name (FILE, NAME);                 \
 304     fprintf (FILE, "\n");                       \
 305   } while (0)
 306
 307 /* Don't allow flag_pic to propagate since gas may produce invalid code
 308    otherwise. */
 309
 310 #undef  SUBTARGET_OVERRIDE_OPTIONS
 311 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
 312 do {                                                                    \
 313   if (flag_pic)                                                         \
 314     {                                                                   \
 315       warning ("-f%s ignored for target (all code is position independent)",\
 316                (flag_pic > 1) ? "PIC" : "pic");                         \
 317       flag_pic = 0;                                                     \
 318     }                                                                   \
 319 } while (0)                                                             \
 320
 321 /* Define this macro if references to a symbol must be treated
 322    differently depending on something about the variable or
 323    function named by the symbol (such as what section it is in).
 324
 325    On i386 running Windows NT, modify the assembler name with a suffix
 326    consisting of an atsign (@) followed by string of digits that represents
 327    the number of bytes of arguments passed to the function, if it has the
 328    attribute STDCALL.
 329
 330    In addition, we must mark dll symbols specially. Definitions of
 331    dllexport'd objects install some info in the .drectve section.
 332    References to dllimport'd objects are fetched indirectly via
 333    _imp__.  If both are declared, dllexport overrides.  This is also
 334    needed to implement one-only vtables: they go into their own
 335    section and we need to set DECL_SECTION_NAME so we do that here.
 336    Note that we can be called twice on the same decl.  */
 337
 338 extern void i386_pe_encode_section_info PARAMS ((TREE));
 339
 340 #ifdef ENCODE_SECTION_INFO
 341 #undef ENCODE_SECTION_INFO
 342 #endif
 343 #define ENCODE_SECTION_INFO(DECL) i386_pe_encode_section_info (DECL)
 344
 345 /* Utility used only in this file.  */
 346 #define I386_PE_STRIP_ENCODING(SYM_NAME) \
 347   ((SYM_NAME) + ((SYM_NAME)[0] == '@' ? 3 : 0))
 348
 349 /* This macro gets just the user-specified name
 350    out of the string in a SYMBOL_REF.  Discard
 351    trailing @[NUM] encoded by ENCODE_SECTION_INFO.  */
 352 #undef  STRIP_NAME_ENCODING
 353 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)                            \
 354 do {                                                                    \
 355   const char *_p;                                                       \
 356   const char *_name = I386_PE_STRIP_ENCODING (SYMBOL_NAME);             \
 357   for (_p = _name; *_p && *_p != '@'; ++_p)                             \
 358     ;                                                                   \
 359   if (*_p == '@')                                                       \
 360     {                                                                   \
 361       int _len = _p - _name;                                            \
 362       char *_new_name = (char *) alloca (_len + 1);                     \
 363       strncpy (_new_name, _name, _len);                                 \
 364       _new_name[_len] = '\0';                                           \
 365       (VAR) = _new_name;                                                \
 366     }                                                                   \
 367   else                                                                  \
 368     (VAR) = _name;                                                      \
 369 } while (0)
 370
 371 \f
 372 /* Output a reference to a label.  */
 373 #undef ASM_OUTPUT_LABELREF
 374 #define ASM_OUTPUT_LABELREF(STREAM, NAME)               \
 375   fprintf (STREAM, "%s%s", USER_LABEL_PREFIX,           \
 376            I386_PE_STRIP_ENCODING (NAME))               \
 377
 378 /* Output a common block.  */
 379 #undef ASM_OUTPUT_COMMON
 380 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 381 do {                                                    \
 382   if (i386_pe_dllexport_name_p (NAME))                  \
 383     i386_pe_record_exported_symbol (NAME, 1);           \
 384   if (! i386_pe_dllimport_name_p (NAME))                \
 385     {                                                   \
 386       fprintf ((STREAM), "\t.comm\t");                  \
 387       assemble_name ((STREAM), (NAME));                 \
 388       fprintf ((STREAM), ", %d\t%s %d\n",               \
 389                (ROUNDED), ASM_COMMENT_START, (SIZE));   \
 390     }                                                   \
 391 } while (0)
 392
 393 /* Output the label for an initialized variable.  */
 394 #undef ASM_DECLARE_OBJECT_NAME
 395 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)     \
 396 do {                                                    \
 397   if (i386_pe_dllexport_name_p (NAME))                  \
 398     i386_pe_record_exported_symbol (NAME, 1);           \
 399   ASM_OUTPUT_LABEL ((STREAM), (NAME));                  \
 400 } while (0)
 401
 402 \f
 403 /* Emit code to check the stack when allocating more that 4000
 404    bytes in one go. */
 405
 406 #define CHECK_STACK_LIMIT 4000
 407
 408 /* By default, target has a 80387, uses IEEE compatible arithmetic,
 409    and returns float values in the 387 and needs stack probes */
 410 #undef TARGET_SUBTARGET_DEFAULT
 411
 412 #define TARGET_SUBTARGET_DEFAULT \
 413    (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
 414
 415 /* This is how to output an assembler line
 416    that says to advance the location counter
 417    to a multiple of 2**LOG bytes.  */
 418
 419 #undef ASM_OUTPUT_ALIGN
 420 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 421     if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
 422
 423 /* Define this macro if in some cases global symbols from one translation
 424    unit may not be bound to undefined symbols in another translation unit
 425    without user intervention.  For instance, under Microsoft Windows
 426    symbols must be explicitly imported from shared libraries (DLLs).  */
 427 #define MULTIPLE_SYMBOL_SPACES
 428
 429 #define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
 430 extern void i386_pe_unique_section PARAMS ((TREE, int));
 431 #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
 432
 433 #define SUPPORTS_ONE_ONLY 1
 434
 435 /* A C statement to output something to the assembler file to switch to section
 436    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
 437    NULL_TREE.  Some target formats do not support arbitrary sections.  Do not
 438    define this macro in such cases.  */
 439 #undef ASM_OUTPUT_SECTION_NAME
 440 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC)              \
 441 do {                                                                    \
 442   static struct section_info                                            \
 443     {                                                                   \
 444       struct section_info *next;                                        \
 445       char *name;                                                       \
 446       enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type;                \
 447     } *sections;                                                        \
 448   struct section_info *s;                                               \
 449   const char *mode;                                                     \
 450   enum sect_enum type;                                                  \
 451                                                                         \
 452   for (s = sections; s; s = s->next)                                    \
 453     if (!strcmp (NAME, s->name))                                        \
 454       break;                                                            \
 455                                                                         \
 456   if (DECL && TREE_CODE (DECL) == FUNCTION_DECL)                        \
 457     type = SECT_EXEC, mode = "x";                                       \
 458   else if (DECL && DECL_READONLY_SECTION (DECL, RELOC))                 \
 459     type = SECT_RO, mode = "";                                          \
 460   else                                                                  \
 461     {                                                                   \
 462       type = SECT_RW;                                                   \
 463       if (DECL && TREE_CODE (DECL) == VAR_DECL                          \
 464           && lookup_attribute ("shared", DECL_MACHINE_ATTRIBUTES (DECL))) \
 465         mode = "ws";                                                    \
 466       else                                                              \
 467         mode = "w";                                                     \
 468     }                                                                   \
 469                                                                         \
 470   if (s == 0)                                                           \
 471     {                                                                   \
 472       s = (struct section_info *) xmalloc (sizeof (struct section_info)); \
 473       s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME));         \
 474       strcpy (s->name, NAME);                                           \
 475       s->type = type;                                                   \
 476       s->next = sections;                                               \
 477       sections = s;                                                     \
 478       fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);            \
 479       /* Functions may have been compiled at various levels of          \
 480          optimization so we can't use `same_size' here.  Instead,       \
 481          have the linker pick one.  */                                  \
 482       if ((DECL) && DECL_ONE_ONLY (DECL))                               \
 483         fprintf (STREAM, "\t.linkonce %s\n",                            \
 484                  TREE_CODE (DECL) == FUNCTION_DECL                      \
 485                  ? "discard" : "same_size");                            \
 486     }                                                                   \
 487   else                                                                  \
 488     {                                                                   \
 489       fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);            \
 490     }                                                                   \
 491 } while (0)
 492
 493 /* Write the extra assembler code needed to declare a function
 494    properly.  If we are generating SDB debugging information, this
 495    will happen automatically, so we only need to handle other cases.  */
 496 #undef ASM_DECLARE_FUNCTION_NAME
 497 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 498   do                                                                    \
 499     {                                                                   \
 500       if (i386_pe_dllexport_name_p (NAME))                              \
 501         i386_pe_record_exported_symbol (NAME, 0);                       \
 502       if (write_symbols != SDB_DEBUG)                                   \
 503         i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
 504       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 505     }                                                                   \
 506   while (0)
 507
 508 /* Add an external function to the list of functions to be declared at
 509    the end of the file.  */
 510 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                           \
 511   do                                                                    \
 512     {                                                                   \
 513       if (TREE_CODE (DECL) == FUNCTION_DECL)                            \
 514         i386_pe_record_external_function (NAME);                        \
 515     }                                                                   \
 516   while (0)
 517
 518 /* Declare the type properly for any external libcall.  */
 519 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
 520   i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
 521
 522 /* This says out to put a global symbol in the BSS section. */
 523 #undef ASM_OUTPUT_ALIGNED_BSS
 524 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
 525   asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 526
 527 /* Output function declarations at the end of the file.  */
 528 #undef ASM_FILE_END
 529 #define ASM_FILE_END(FILE) \
 530   i386_pe_asm_file_end (FILE)
 531
 532 #undef ASM_COMMENT_START
 533 #define ASM_COMMENT_START " #"
 534
 535 /* Don't assume anything about the header files. */
 536 #define NO_IMPLICIT_EXTERN_C
 537
 538 #define SUBTARGET_PROLOGUE                                              \
 539   if (profile_flag                                                      \
 540       && MAIN_NAME_P (DECL_NAME (current_function_decl)))               \
 541      {                                                                  \
 542       emit_call_insn (gen_rtx (CALL, VOIDmode,                          \
 543         gen_rtx_MEM (FUNCTION_MODE,                                     \
 544                      gen_rtx_SYMBOL_REF (Pmode, "_monstartup")),        \
 545         const0_rtx));                                                   \
 546      }
 547
 548 /* External function declarations.  */
 549
 550 extern void i386_pe_record_external_function PARAMS ((const char *));
 551 extern void i386_pe_declare_function_type PARAMS ((FILE *, const char *, int));
 552 extern void i386_pe_record_exported_symbol PARAMS ((const char *, int));
 553 extern void i386_pe_asm_file_end PARAMS ((FILE *));
 554 extern int i386_pe_dllexport_name_p PARAMS ((const char *));
 555 extern int i386_pe_dllimport_name_p PARAMS ((const char *));
 556
 557 /* For Win32 ABI compatibility */
 558 #undef DEFAULT_PCC_STRUCT_RETURN
 559 #define DEFAULT_PCC_STRUCT_RETURN 0
 560
 561 /* No data type wants to be aligned rounder than this.  */
 562 #undef  BIGGEST_ALIGNMENT
 563 #define BIGGEST_ALIGNMENT 128
 564
 565 /* A bitfield declared as `int' forces `int' alignment for the struct.  */
 566 #undef PCC_BITFIELDS_TYPE_MATTERS
 567 #define PCC_BITFIELDS_TYPE_MATTERS 1
 568 #define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
 569
 570
 571 /* Enable alias attribute support.  */
 572 #ifndef SET_ASM_OP
 573 #define SET_ASM_OP "\t.set\t"
 574 #endif
 575
 576 #undef MD_STARTFILE_PREFIX
 577 #define MD_STARTFILE_PREFIX     "/usr/lib/"
 578
 579 #undef STANDARD_STARTFILE_PREFIX
 580 #define STANDARD_STARTFILE_PREFIX     "/usr/lib/mingw/"
 581
 582 #ifndef CROSS_COMPILE
 583 #undef LOCAL_INCLUDE_DIR
 584 #undef TOOL_INCLUDE_DIR
 585 #undef SYSTEM_INCLUDE_DIR
 586 #undef STANDARD_INCLUDE_DIR
 587 #define STANDARD_INCLUDE_DIR 0
 588 #endif
 589
 590 #undef TREE
 591
 592 #ifndef BUFSIZ
 593 # undef FILE
 594 #endif