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, 2000
6 Free Software Foundation, Inc.
8 This file is part of GNU CC.
10 GNU CC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2, or (at your option)
15 GNU CC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GNU CC; see the file COPYING. If not, write to
22 the Free Software Foundation, 59 Temple Place - Suite 330,
23 Boston, MA 02111-1307, USA. */
25 #define YES_UNDERSCORES
27 #define DBX_DEBUGGING_INFO
28 #define SDB_DEBUGGING_INFO
29 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
34 /* Augment TARGET_SWITCHES with the cygwin/no-cygwin options. */
35 #define MASK_WIN32 0x40000000 /* Use -lming32 interface */
36 #define MASK_CYGWIN 0x20000000 /* Use -lcygwin interface */
37 #define MASK_WINDOWS 0x10000000 /* Use windows interface */
38 #define MASK_DLL 0x08000000 /* Use dll interface */
39 #define MASK_NOP_FUN_DLLIMPORT 0x20000 /* Ignore dllimport for functions */
41 #define TARGET_WIN32 (target_flags & MASK_WIN32)
42 #define TARGET_CYGWIN (target_flags & MASK_CYGWIN)
43 #define TARGET_WINDOWS (target_flags & MASK_WINDOWS)
44 #define TARGET_DLL (target_flags & MASK_DLL)
45 #define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT)
47 #undef SUBTARGET_SWITCHES
48 #define SUBTARGET_SWITCHES \
49 { "cygwin", MASK_CYGWIN, "Use the Cygwin interface" }, \
50 { "no-cygwin", MASK_WIN32, "Use the Mingw32 interface" }, \
51 { "windows", MASK_WINDOWS, "Create GUI application" }, \
52 { "console", -MASK_WINDOWS, "Create console application" }, \
53 { "dll", MASK_DLL, "Generate code for a DLL" }, \
54 { "nop-fun-dllimport", MASK_NOP_FUN_DLLIMPORT, "Ignore dllimport for functions" }, \
55 { "no-nop-fun-dllimport", -MASK_NOP_FUN_DLLIMPORT, "" }, \
56 { "threads", 0, "Use Mingw-specific thread support" },
59 /* Support the __declspec keyword by turning them into attributes.
60 We currently only support: dllimport and dllexport.
61 Note that the current way we do this may result in a collision with
62 predefined attributes later on. This can be solved by using one attribute,
63 say __declspec__, and passing args to it. The problem with that approach
64 is that args are not accumulated: each new appearance would clobber any
68 #define CPP_PREDEFINES "-D_WIN32 \
72 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we
73 want to allow things to be added to it when installing new versions of
74 GCC without making a new CYGWIN.DLL, so we leave it. Profiling is handled
75 by calling the init function from the prologue. */
78 #define STARTFILE_SPEC "%{mdll: %{mno-cygwin:dllcrt1%O%s}} \
79 %{!mdll: %{!mno-cygwin:crt0%O%s} \
80 %{mno-cygwin:crt1%O%s} %{pg:gcrt0%O%s}}"
83 #define CPP_SPEC "-remap %(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
84 -D__stdcall=__attribute__((__stdcall__)) \
85 -D__cdecl=__attribute__((__cdecl__)) \
86 %{!ansi:-D_stdcall=__attribute__((__stdcall__)) \
87 -D_cdecl=__attribute__((__cdecl__))} \
88 -D__declspec(x)=__attribute__((x)) \
89 %{!mno-cygwin:-D__CYGWIN32__ -D__CYGWIN__} \
90 %{mno-cygwin:-iwithprefixbefore \
91 ../../../../%(mingw_include_path)/include/mingw32 -D__MINGW32__=0.2}"
93 /* This macro defines names of additional specifications to put in the specs
94 that can be used in various specifications like CC1_SPEC. Its definition
95 is an initializer with a subgrouping for each command option.
97 Each subgrouping contains a string constant, that defines the
98 specification name, and a string constant that used by the GNU CC driver
101 Do not define this macro if it does not need to do anything. */
103 #undef SUBTARGET_EXTRA_SPECS
104 #define SUBTARGET_EXTRA_SPECS \
105 { "mingw_include_path", DEFAULT_TARGET_MACHINE }
107 /* We have to dynamic link to get to the system DLLs. All of libc, libm and
108 the Unix stuff is in cygwin.dll. The import library is called
109 'libcygwin.a'. For Windows applications, include more libraries, but
110 always include kernel32. We'd like to specific subsystem windows to
111 ld, but that doesn't work just yet. */
114 #define LIB_SPEC "%{pg:-lgmon} \
115 %{!mno-cygwin:-lcygwin} \
116 %{mno-cygwin:-lmingw32 -lmoldname -lcrtdll} \
117 %{mwindows:-lgdi32 -lcomdlg32} \
118 -luser32 -lkernel32 -ladvapi32 -lshell32"
120 #define LINK_SPEC "%{mwindows:--subsystem windows} \
121 %{mconsole:--subsystem console} \
122 %{mdll:--dll -e _DllMainCRTStartup@12}"
125 #define SIZE_TYPE "unsigned int"
126 #define PTRDIFF_TYPE "int"
127 #define WCHAR_UNSIGNED 1
128 #define WCHAR_TYPE_SIZE 16
129 #define WCHAR_TYPE "short unsigned int"
132 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */
133 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
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 ();
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)
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. */
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 ();
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))
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. */
162 #define REDO_SECTION_INFO_P(DECL) \
163 ((DECL_MACHINE_ATTRIBUTES (DECL) != NULL_TREE) \
164 || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL)))
166 #define REDO_SECTION_INFO_P(DECL) 1
170 #undef EXTRA_SECTIONS
171 #define EXTRA_SECTIONS in_ctor, in_dtor, in_drectve
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
180 #define CTOR_SECTION_FUNCTION \
184 if (in_section != in_ctor) \
186 fprintf (asm_out_file, "\t.section .ctor\n"); \
187 in_section = in_ctor; \
191 #define DTOR_SECTION_FUNCTION \
195 if (in_section != in_dtor) \
197 fprintf (asm_out_file, "\t.section .dtor\n"); \
198 in_section = in_dtor; \
202 #define DRECTVE_SECTION_FUNCTION \
206 if (in_section != in_drectve) \
208 fprintf (asm_out_file, "%s\n", "\t.section .drectve\n"); \
209 in_section = in_drectve; \
213 /* Switch to SECTION (an `enum in_section').
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
219 #define SWITCH_TO_SECTION_FUNCTION \
221 switch_to_section (section, decl) \
222 enum in_section section; \
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; \
237 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
240 fprintf (FILE, "%s\t", ASM_LONG); \
241 assemble_name (FILE, NAME); \
242 fprintf (FILE, "\n"); \
245 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
248 fprintf (FILE, "%s\t", ASM_LONG); \
249 assemble_name (FILE, NAME); \
250 fprintf (FILE, "\n"); \
253 /* Don't allow flag_pic to propagate since gas may produce invalid code
256 #undef SUBTARGET_OVERRIDE_OPTIONS
257 #define SUBTARGET_OVERRIDE_OPTIONS \
261 warning ("-f%s ignored for target (all code is position independent)",\
262 (flag_pic > 1) ? "PIC" : "pic"); \
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).
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
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. */
284 extern void i386_pe_encode_section_info ();
286 #ifdef ENCODE_SECTION_INFO
287 #undef ENCODE_SECTION_INFO
289 #define ENCODE_SECTION_INFO(DECL) i386_pe_encode_section_info (DECL)
291 /* Utility used only in this file. */
292 #define I386_PE_STRIP_ENCODING(SYM_NAME) \
293 ((SYM_NAME) + ((SYM_NAME)[0] == '@' ? 3 : 0))
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) \
302 const char *_name = I386_PE_STRIP_ENCODING (SYMBOL_NAME); \
303 for (_p = _name; *_p && *_p != '@'; ++_p) \
307 int _len = _p - _name; \
308 char *_new_name = (char *) alloca (_len + 1); \
309 strncpy (_new_name, _name, _len); \
310 _new_name[_len] = '\0'; \
318 /* Output a reference to a label. */
319 #undef ASM_OUTPUT_LABELREF
320 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
321 fprintf (STREAM, "%s%s", USER_LABEL_PREFIX, \
322 I386_PE_STRIP_ENCODING (NAME)) \
324 /* Output a common block. */
325 #undef ASM_OUTPUT_COMMON
326 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
328 if (i386_pe_dllexport_name_p (NAME)) \
329 i386_pe_record_exported_symbol (NAME, 1); \
330 if (! i386_pe_dllimport_name_p (NAME)) \
332 fprintf ((STREAM), "\t.comm\t"); \
333 assemble_name ((STREAM), (NAME)); \
334 fprintf ((STREAM), ", %d\t%s %d\n", \
335 (ROUNDED), ASM_COMMENT_START, (SIZE)); \
339 /* Output the label for an initialized variable. */
340 #undef ASM_DECLARE_OBJECT_NAME
341 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
343 if (i386_pe_dllexport_name_p (NAME)) \
344 i386_pe_record_exported_symbol (NAME, 1); \
345 ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
349 /* Emit code to check the stack when allocating more that 4000
352 #define CHECK_STACK_LIMIT 4000
354 /* By default, target has a 80387, uses IEEE compatible arithmetic,
355 and returns float values in the 387 and needs stack probes */
356 #undef TARGET_DEFAULT
358 #define TARGET_DEFAULT \
359 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
361 /* This is how to output an assembler line
362 that says to advance the location counter
363 to a multiple of 2**LOG bytes. */
365 #undef ASM_OUTPUT_ALIGN
366 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
367 if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
369 /* Define this macro if in some cases global symbols from one translation
370 unit may not be bound to undefined symbols in another translation unit
371 without user intervention. For instance, under Microsoft Windows
372 symbols must be explicitly imported from shared libraries (DLLs). */
373 #define MULTIPLE_SYMBOL_SPACES
375 #define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
376 extern void i386_pe_unique_section ();
377 #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
379 #define SUPPORTS_ONE_ONLY 1
381 /* A C statement to output something to the assembler file to switch to section
382 NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
383 NULL_TREE. Some target formats do not support arbitrary sections. Do not
384 define this macro in such cases. */
385 #undef ASM_OUTPUT_SECTION_NAME
386 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \
388 static struct section_info \
390 struct section_info *next; \
392 enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type; \
394 struct section_info *s; \
396 enum sect_enum type; \
398 for (s = sections; s; s = s->next) \
399 if (!strcmp (NAME, s->name)) \
402 if (DECL && TREE_CODE (DECL) == FUNCTION_DECL) \
403 type = SECT_EXEC, mode = "x"; \
404 else if (DECL && DECL_READONLY_SECTION (DECL, RELOC)) \
405 type = SECT_RO, mode = ""; \
409 if (TREE_CODE (DECL) == VAR_DECL \
410 && lookup_attribute ("shared", DECL_MACHINE_ATTRIBUTES (DECL))) \
418 s = (struct section_info *) xmalloc (sizeof (struct section_info)); \
419 s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME)); \
420 strcpy (s->name, NAME); \
422 s->next = sections; \
424 fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode); \
425 /* Functions may have been compiled at various levels of \
426 optimization so we can't use `same_size' here. Instead, \
427 have the linker pick one. */ \
428 if ((DECL) && DECL_ONE_ONLY (DECL)) \
429 fprintf (STREAM, "\t.linkonce %s\n", \
430 TREE_CODE (DECL) == FUNCTION_DECL \
431 ? "discard" : "same_size"); \
435 fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode); \
439 /* Write the extra assembler code needed to declare a function
440 properly. If we are generating SDB debugging information, this
441 will happen automatically, so we only need to handle other cases. */
442 #undef ASM_DECLARE_FUNCTION_NAME
443 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
446 if (i386_pe_dllexport_name_p (NAME)) \
447 i386_pe_record_exported_symbol (NAME, 0); \
448 if (write_symbols != SDB_DEBUG) \
449 i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
450 ASM_OUTPUT_LABEL (FILE, NAME); \
454 /* Add an external function to the list of functions to be declared at
455 the end of the file. */
456 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
459 if (TREE_CODE (DECL) == FUNCTION_DECL) \
460 i386_pe_record_external_function (NAME); \
464 /* Declare the type properly for any external libcall. */
465 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
466 i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
468 /* This says out to put a global symbol in the BSS section. */
469 #undef ASM_OUTPUT_ALIGNED_BSS
470 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
471 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
473 /* Output function declarations at the end of the file. */
474 #define ASM_FILE_END(FILE) \
475 i386_pe_asm_file_end (FILE)
477 #undef ASM_COMMENT_START
478 #define ASM_COMMENT_START " #"
480 /* DWARF2 Unwinding doesn't work with exception handling yet. */
481 #define DWARF2_UNWIND_INFO 0
483 /* Don't assume anything about the header files. */
484 #define NO_IMPLICIT_EXTERN_C
486 #define SUBTARGET_PROLOGUE \
488 && strcmp (IDENTIFIER_POINTER (DECL_NAME (current_function_decl)),\
491 emit_call_insn (gen_rtx (CALL, VOIDmode, \
492 gen_rtx_MEM (FUNCTION_MODE, \
493 gen_rtx_SYMBOL_REF (Pmode, "_monstartup")), \
497 /* External function declarations. */
500 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
501 #define PARAMS(ARGS) ARGS
503 #define PARAMS(ARGS) ()
507 #ifdef BUFSIZ /* stdio.h has been included, ok to use FILE * */
508 #define STDIO_PARAMS(ARGS) PARAMS(ARGS)
510 #define STDIO_PARAMS(ARGS) ()
513 extern void i386_pe_record_external_function PARAMS ((char *));
514 extern void i386_pe_declare_function_type STDIO_PARAMS ((FILE *, char *, int));
515 extern void i386_pe_record_exported_symbol PARAMS ((char *, int));
516 extern void i386_pe_asm_file_end STDIO_PARAMS ((FILE *));
518 /* For Win32 ABI compatibility */
519 #undef DEFAULT_PCC_STRUCT_RETURN
520 #define DEFAULT_PCC_STRUCT_RETURN 0
522 /* No data type wants to be aligned rounder than this. */
523 #undef BIGGEST_ALIGNMENT
524 #define BIGGEST_ALIGNMENT 128
526 /* A bitfield declared as `int' forces `int' alignment for the struct. */
527 #undef PCC_BITFIELDS_TYPE_MATTERS
528 #define PCC_BITFIELDS_TYPE_MATTERS 0
530 /* Enable alias attribute support. */
532 #define SET_ASM_OP "\t.set"
536 #define INT_ASM_OP ".long"