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