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 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
 186    is a valid machine specific attribute for DECL.
 187    The attributes in ATTRIBUTES have previously been assigned to DECL.  */
 188
 189 union tree_node;
 190 #define TREE union tree_node *
 191
 192 #undef VALID_MACHINE_DECL_ATTRIBUTE
 193 #define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
 194   i386_pe_valid_decl_attribute_p (DECL, ATTRIBUTES, IDENTIFIER, ARGS)
 195 extern int i386_pe_valid_decl_attribute_p PARAMS ((TREE, TREE, TREE, TREE));
 196
 197 /* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
 198    is a valid machine specific attribute for TYPE.
 199    The attributes in ATTRIBUTES have previously been assigned to TYPE.  */
 200
 201 #undef VALID_MACHINE_TYPE_ATTRIBUTE
 202 #define VALID_MACHINE_TYPE_ATTRIBUTE(TYPE, ATTRIBUTES, IDENTIFIER, ARGS) \
 203   i386_pe_valid_type_attribute_p (TYPE, ATTRIBUTES, IDENTIFIER, ARGS)
 204 extern int i386_pe_valid_type_attribute_p PARAMS ((TREE, TREE, TREE, TREE));
 205
 206 /* Used to implement dllexport overriding dllimport semantics.  It's also used
 207    to handle vtables - the first pass won't do anything because
 208    DECL_CONTEXT (DECL) will be 0 so i386_pe_dll{ex,im}port_p will return 0.
 209    It's also used to handle dllimport override semantics.  */
 210 #if 0
 211 #define REDO_SECTION_INFO_P(DECL) \
 212   ((DECL_MACHINE_ATTRIBUTES (DECL) != NULL_TREE) \
 213    || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL)))
 214 #else
 215 #define REDO_SECTION_INFO_P(DECL) 1
 216 #endif
 217
 218 \f
 219 #undef EXTRA_SECTIONS
 220 #define EXTRA_SECTIONS in_ctor, in_dtor, in_drectve
 221
 222 #undef EXTRA_SECTION_FUNCTIONS
 223 #define EXTRA_SECTION_FUNCTIONS                                 \
 224   CTOR_SECTION_FUNCTION                                         \
 225   DTOR_SECTION_FUNCTION                                         \
 226   DRECTVE_SECTION_FUNCTION                                      \
 227   SWITCH_TO_SECTION_FUNCTION
 228
 229 #define CTOR_SECTION_FUNCTION                                   \
 230 void                                                            \
 231 ctor_section ()                                                 \
 232 {                                                               \
 233   if (in_section != in_ctor)                                    \
 234     {                                                           \
 235       fprintf (asm_out_file, "\t.section .ctor\n");             \
 236       in_section = in_ctor;                                     \
 237     }                                                           \
 238 }
 239 void ctor_section PARAMS ((void));
 240
 241 #define DTOR_SECTION_FUNCTION                                   \
 242 void                                                            \
 243 dtor_section ()                                                 \
 244 {                                                               \
 245   if (in_section != in_dtor)                                    \
 246     {                                                           \
 247       fprintf (asm_out_file, "\t.section .dtor\n");             \
 248       in_section = in_dtor;                                     \
 249     }                                                           \
 250 }
 251 void dtor_section PARAMS ((void));
 252
 253 #define DRECTVE_SECTION_FUNCTION \
 254 void                                                                    \
 255 drectve_section ()                                                      \
 256 {                                                                       \
 257   if (in_section != in_drectve)                                         \
 258     {                                                                   \
 259       fprintf (asm_out_file, "%s\n", "\t.section .drectve\n");          \
 260       in_section = in_drectve;                                          \
 261     }                                                                   \
 262 }
 263 void drectve_section PARAMS ((void));
 264
 265 /* Switch to SECTION (an `enum in_section').
 266
 267    ??? This facility should be provided by GCC proper.
 268    The problem is that we want to temporarily switch sections in
 269    ASM_DECLARE_OBJECT_NAME and then switch back to the original section
 270    afterwards.  */
 271 #define SWITCH_TO_SECTION_FUNCTION                              \
 272 void switch_to_section PARAMS ((enum in_section, tree));        \
 273 void                                                            \
 274 switch_to_section (section, decl)                               \
 275      enum in_section section;                                   \
 276      tree decl;                                                 \
 277 {                                                               \
 278   switch (section)                                              \
 279     {                                                           \
 280       case in_text: text_section (); break;                     \
 281       case in_data: data_section (); break;                     \
 282       case in_named: named_section (decl, NULL, 0); break;      \
 283       case in_ctor: ctor_section (); break;                     \
 284       case in_dtor: dtor_section (); break;                     \
 285       case in_drectve: drectve_section (); break;               \
 286       default: abort (); break;                                 \
 287     }                                                           \
 288 }
 289
 290 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)       \
 291   do {                                          \
 292     ctor_section ();                            \
 293     fputs (ASM_LONG, FILE);                     \
 294     assemble_name (FILE, NAME);                 \
 295     fprintf (FILE, "\n");                       \
 296   } while (0)
 297
 298 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)        \
 299   do {                                          \
 300     dtor_section ();                            \
 301     fputs (ASM_LONG, FILE);                     \
 302     assemble_name (FILE, NAME);                 \
 303     fprintf (FILE, "\n");                       \
 304   } while (0)
 305
 306 /* Don't allow flag_pic to propagate since gas may produce invalid code
 307    otherwise. */
 308
 309 #undef  SUBTARGET_OVERRIDE_OPTIONS
 310 #define SUBTARGET_OVERRIDE_OPTIONS                                      \
 311 do {                                                                    \
 312   if (flag_pic)                                                         \
 313     {                                                                   \
 314       warning ("-f%s ignored for target (all code is position independent)",\
 315                (flag_pic > 1) ? "PIC" : "pic");                         \
 316       flag_pic = 0;                                                     \
 317     }                                                                   \
 318 } while (0)                                                             \
 319
 320 /* Define this macro if references to a symbol must be treated
 321    differently depending on something about the variable or
 322    function named by the symbol (such as what section it is in).
 323
 324    On i386 running Windows NT, modify the assembler name with a suffix
 325    consisting of an atsign (@) followed by string of digits that represents
 326    the number of bytes of arguments passed to the function, if it has the
 327    attribute STDCALL.
 328
 329    In addition, we must mark dll symbols specially. Definitions of
 330    dllexport'd objects install some info in the .drectve section.
 331    References to dllimport'd objects are fetched indirectly via
 332    _imp__.  If both are declared, dllexport overrides.  This is also
 333    needed to implement one-only vtables: they go into their own
 334    section and we need to set DECL_SECTION_NAME so we do that here.
 335    Note that we can be called twice on the same decl.  */
 336
 337 extern void i386_pe_encode_section_info PARAMS ((TREE));
 338
 339 #ifdef ENCODE_SECTION_INFO
 340 #undef ENCODE_SECTION_INFO
 341 #endif
 342 #define ENCODE_SECTION_INFO(DECL) i386_pe_encode_section_info (DECL)
 343
 344 /* Utility used only in this file.  */
 345 #define I386_PE_STRIP_ENCODING(SYM_NAME) \
 346   ((SYM_NAME) + ((SYM_NAME)[0] == '@' ? 3 : 0))
 347
 348 /* This macro gets just the user-specified name
 349    out of the string in a SYMBOL_REF.  Discard
 350    trailing @[NUM] encoded by ENCODE_SECTION_INFO.  */
 351 #undef  STRIP_NAME_ENCODING
 352 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)                            \
 353 do {                                                                    \
 354   const char *_p;                                                       \
 355   const char *_name = I386_PE_STRIP_ENCODING (SYMBOL_NAME);             \
 356   for (_p = _name; *_p && *_p != '@'; ++_p)                             \
 357     ;                                                                   \
 358   if (*_p == '@')                                                       \
 359     {                                                                   \
 360       int _len = _p - _name;                                            \
 361       char *_new_name = (char *) alloca (_len + 1);                     \
 362       strncpy (_new_name, _name, _len);                                 \
 363       _new_name[_len] = '\0';                                           \
 364       (VAR) = _new_name;                                                \
 365     }                                                                   \
 366   else                                                                  \
 367     (VAR) = _name;                                                      \
 368 } while (0)
 369
 370 \f
 371 /* Output a reference to a label.  */
 372 #undef ASM_OUTPUT_LABELREF
 373 #define ASM_OUTPUT_LABELREF(STREAM, NAME)               \
 374   fprintf (STREAM, "%s%s", USER_LABEL_PREFIX,           \
 375            I386_PE_STRIP_ENCODING (NAME))               \
 376
 377 /* Output a common block.  */
 378 #undef ASM_OUTPUT_COMMON
 379 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)  \
 380 do {                                                    \
 381   if (i386_pe_dllexport_name_p (NAME))                  \
 382     i386_pe_record_exported_symbol (NAME, 1);           \
 383   if (! i386_pe_dllimport_name_p (NAME))                \
 384     {                                                   \
 385       fprintf ((STREAM), "\t.comm\t");                  \
 386       assemble_name ((STREAM), (NAME));                 \
 387       fprintf ((STREAM), ", %d\t%s %d\n",               \
 388                (ROUNDED), ASM_COMMENT_START, (SIZE));   \
 389     }                                                   \
 390 } while (0)
 391
 392 /* Output the label for an initialized variable.  */
 393 #undef ASM_DECLARE_OBJECT_NAME
 394 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)     \
 395 do {                                                    \
 396   if (i386_pe_dllexport_name_p (NAME))                  \
 397     i386_pe_record_exported_symbol (NAME, 1);           \
 398   ASM_OUTPUT_LABEL ((STREAM), (NAME));                  \
 399 } while (0)
 400
 401 \f
 402 /* Emit code to check the stack when allocating more that 4000
 403    bytes in one go. */
 404
 405 #define CHECK_STACK_LIMIT 4000
 406
 407 /* By default, target has a 80387, uses IEEE compatible arithmetic,
 408    and returns float values in the 387 and needs stack probes */
 409 #undef TARGET_SUBTARGET_DEFAULT
 410
 411 #define TARGET_SUBTARGET_DEFAULT \
 412    (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
 413
 414 /* This is how to output an assembler line
 415    that says to advance the location counter
 416    to a multiple of 2**LOG bytes.  */
 417
 418 #undef ASM_OUTPUT_ALIGN
 419 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
 420     if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
 421
 422 /* Define this macro if in some cases global symbols from one translation
 423    unit may not be bound to undefined symbols in another translation unit
 424    without user intervention.  For instance, under Microsoft Windows
 425    symbols must be explicitly imported from shared libraries (DLLs).  */
 426 #define MULTIPLE_SYMBOL_SPACES
 427
 428 #define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
 429 extern void i386_pe_unique_section PARAMS ((TREE, int));
 430 #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
 431
 432 #define SUPPORTS_ONE_ONLY 1
 433
 434 /* A C statement to output something to the assembler file to switch to section
 435    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
 436    NULL_TREE.  Some target formats do not support arbitrary sections.  Do not
 437    define this macro in such cases.  */
 438 #undef ASM_OUTPUT_SECTION_NAME
 439 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC)              \
 440 do {                                                                    \
 441   static struct section_info                                            \
 442     {                                                                   \
 443       struct section_info *next;                                        \
 444       char *name;                                                       \
 445       enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type;                \
 446     } *sections;                                                        \
 447   struct section_info *s;                                               \
 448   const char *mode;                                                     \
 449   enum sect_enum type;                                                  \
 450                                                                         \
 451   for (s = sections; s; s = s->next)                                    \
 452     if (!strcmp (NAME, s->name))                                        \
 453       break;                                                            \
 454                                                                         \
 455   if (DECL && TREE_CODE (DECL) == FUNCTION_DECL)                        \
 456     type = SECT_EXEC, mode = "x";                                       \
 457   else if (DECL && DECL_READONLY_SECTION (DECL, RELOC))                 \
 458     type = SECT_RO, mode = "";                                          \
 459   else                                                                  \
 460     {                                                                   \
 461       type = SECT_RW;                                                   \
 462       if (DECL && TREE_CODE (DECL) == VAR_DECL                          \
 463           && lookup_attribute ("shared", DECL_MACHINE_ATTRIBUTES (DECL))) \
 464         mode = "ws";                                                    \
 465       else                                                              \
 466         mode = "w";                                                     \
 467     }                                                                   \
 468                                                                         \
 469   if (s == 0)                                                           \
 470     {                                                                   \
 471       s = (struct section_info *) xmalloc (sizeof (struct section_info)); \
 472       s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME));         \
 473       strcpy (s->name, NAME);                                           \
 474       s->type = type;                                                   \
 475       s->next = sections;                                               \
 476       sections = s;                                                     \
 477       fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);            \
 478       /* Functions may have been compiled at various levels of          \
 479          optimization so we can't use `same_size' here.  Instead,       \
 480          have the linker pick one.  */                                  \
 481       if ((DECL) && DECL_ONE_ONLY (DECL))                               \
 482         fprintf (STREAM, "\t.linkonce %s\n",                            \
 483                  TREE_CODE (DECL) == FUNCTION_DECL                      \
 484                  ? "discard" : "same_size");                            \
 485     }                                                                   \
 486   else                                                                  \
 487     {                                                                   \
 488       fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);            \
 489     }                                                                   \
 490 } while (0)
 491
 492 /* Write the extra assembler code needed to declare a function
 493    properly.  If we are generating SDB debugging information, this
 494    will happen automatically, so we only need to handle other cases.  */
 495 #undef ASM_DECLARE_FUNCTION_NAME
 496 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                     \
 497   do                                                                    \
 498     {                                                                   \
 499       if (i386_pe_dllexport_name_p (NAME))                              \
 500         i386_pe_record_exported_symbol (NAME, 0);                       \
 501       if (write_symbols != SDB_DEBUG)                                   \
 502         i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
 503       ASM_OUTPUT_LABEL (FILE, NAME);                                    \
 504     }                                                                   \
 505   while (0)
 506
 507 /* Add an external function to the list of functions to be declared at
 508    the end of the file.  */
 509 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                           \
 510   do                                                                    \
 511     {                                                                   \
 512       if (TREE_CODE (DECL) == FUNCTION_DECL)                            \
 513         i386_pe_record_external_function (NAME);                        \
 514     }                                                                   \
 515   while (0)
 516
 517 /* Declare the type properly for any external libcall.  */
 518 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
 519   i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
 520
 521 /* This says out to put a global symbol in the BSS section. */
 522 #undef ASM_OUTPUT_ALIGNED_BSS
 523 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
 524   asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
 525
 526 /* Output function declarations at the end of the file.  */
 527 #undef ASM_FILE_END
 528 #define ASM_FILE_END(FILE) \
 529   i386_pe_asm_file_end (FILE)
 530
 531 #undef ASM_COMMENT_START
 532 #define ASM_COMMENT_START " #"
 533
 534 /* Don't assume anything about the header files. */
 535 #define NO_IMPLICIT_EXTERN_C
 536
 537 #define SUBTARGET_PROLOGUE                                              \
 538   if (profile_flag                                                      \
 539       && MAIN_NAME_P (DECL_NAME (current_function_decl)))               \
 540      {                                                                  \
 541       emit_call_insn (gen_rtx (CALL, VOIDmode,                          \
 542         gen_rtx_MEM (FUNCTION_MODE,                                     \
 543                      gen_rtx_SYMBOL_REF (Pmode, "_monstartup")),        \
 544         const0_rtx));                                                   \
 545      }
 546
 547 /* External function declarations.  */
 548
 549 extern void i386_pe_record_external_function PARAMS ((const char *));
 550 extern void i386_pe_declare_function_type PARAMS ((FILE *, const char *, int));
 551 extern void i386_pe_record_exported_symbol PARAMS ((const char *, int));
 552 extern void i386_pe_asm_file_end PARAMS ((FILE *));
 553 extern int i386_pe_dllexport_name_p PARAMS ((const char *));
 554 extern int i386_pe_dllimport_name_p PARAMS ((const char *));
 555
 556 /* For Win32 ABI compatibility */
 557 #undef DEFAULT_PCC_STRUCT_RETURN
 558 #define DEFAULT_PCC_STRUCT_RETURN 0
 559
 560 /* No data type wants to be aligned rounder than this.  */
 561 #undef  BIGGEST_ALIGNMENT
 562 #define BIGGEST_ALIGNMENT 128
 563
 564 /* A bitfield declared as `int' forces `int' alignment for the struct.  */
 565 #undef PCC_BITFIELDS_TYPE_MATTERS
 566 #define PCC_BITFIELDS_TYPE_MATTERS 1
 567 #define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
 568
 569
 570 /* Enable alias attribute support.  */
 571 #ifndef SET_ASM_OP
 572 #define SET_ASM_OP "\t.set\t"
 573 #endif
 574
 575 #undef MD_STARTFILE_PREFIX
 576 #define MD_STARTFILE_PREFIX     "/usr/lib/"
 577
 578 #undef STANDARD_STARTFILE_PREFIX
 579 #define STANDARD_STARTFILE_PREFIX     "/usr/lib/mingw/"
 580
 581 #ifndef CROSS_COMPILE
 582 #undef LOCAL_INCLUDE_DIR
 583 #undef TOOL_INCLUDE_DIR
 584 #undef SYSTEM_INCLUDE_DIR
 585 #undef STANDARD_INCLUDE_DIR
 586 #define STANDARD_INCLUDE_DIR 0
 587 #endif
 588
 589 #undef TREE
 590
 591 #ifndef BUFSIZ
 592 # undef FILE
 593 #endif