]> git.ipfire.org Git - thirdparty/gcc.git/blob - gcc/config/i386/cygwin.h
function.h (struct function): Add profile.
[thirdparty/gcc.git] / 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 "%{!nostdinc:-idirafter " CYGWIN_CROSS_DIR "/include}"
70 #define W32API_INC "%{!nostdinc:-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 "%{!nostdinc:-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 "%{!nostdinc:-isystem /usr/local/include "\
79 "-idirafter " CYGWIN_CROSS_DIR "/include "\
80 "-idirafter /usr/include}"
81 #define W32API_INC "%{!nostdinc:"\
82 "-idirafter " CYGWIN_CROSS_DIR "/include/w32api "\
83 "-idirafter /usr/include/w32api}"
84 #define W32API_LIB "-L" CYGWIN_CROSS_DIR "/lib/w32api/ -L/usr/lib/w32api/"
85 #define CYGWIN_LIB "/usr/lib"
86 #define MINGW_LIBS "-L/usr/local/lib/mingw -L/usr/lib/mingw"
87 #define MINGW_INCLUDES "%{!nostdinc:-isystem /usr/include/mingw/g++-3 "\
88 "-isystem /usr/include/mingw/g++ "\
89 "-isystem /usr/local/include/mingw "\
90 "-idirafter " CYGWIN_CROSS_DIR "/include/mingw "\
91 "-idirafter /usr/include/mingw}"
92 #endif
93
94 /* Get tree.c to declare a target-specific specialization of
95 merge_decl_attributes. */
96 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES
97
98 /* Support the __declspec keyword by turning them into attributes.
99 We currently only support: dllimport and dllexport.
100 Note that the current way we do this may result in a collision with
101 predefined attributes later on. This can be solved by using one attribute,
102 say __declspec__, and passing args to it. The problem with that approach
103 is that args are not accumulated: each new appearance would clobber any
104 existing args. */
105
106 #undef CPP_SPEC
107 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
108 -D__stdcall=__attribute__((__stdcall__)) \
109 -D__cdecl=__attribute__((__cdecl__)) \
110 %{!ansi:-D_stdcall=__attribute__((__stdcall__)) \
111 -D_cdecl=__attribute__((__cdecl__))} \
112 -D__declspec(x)=__attribute__((x)) \
113 -D__i386__ -D__i386 \
114 %{mno-win32:%{mno-cygwin: %emno-cygwin and mno-win32 are not compatible}} \
115 %{mno-cygwin:-D__MSVCRT__ -D__MINGW32__ %{mthreads:-D_MT} "\
116 MINGW_INCLUDES "} \
117 %{!mno-cygwin:-D__CYGWIN32__ -D__CYGWIN__ %{!ansi:-Dunix} -D__unix__ -D__unix "\
118 CYGWIN_INCLUDES "}\
119 %{mwin32|mno-cygwin:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ %{!ansi:-DWINNT}}\
120 %{!mno-win32:" W32API_INC "}\
121 "
122
123 #undef STARTFILE_SPEC
124 #define STARTFILE_SPEC "\
125 %{shared|mdll: %{mno-cygwin:" MINGW_LIBS " dllcrt2%O%s}}\
126 %{!shared: %{!mdll: %{!mno-cygwin:crt0%O%s} %{mno-cygwin:" MINGW_LIBS " crt2%O%s}\
127 %{pg:gcrt0%O%s}}}\
128 "
129
130 /* Normally, -lgcc is not needed since everything in it is in the DLL, but we
131 want to allow things to be added to it when installing new versions of
132 GCC without making a new CYGWIN.DLL, so we leave it. Profiling is handled
133 by calling the init function from the prologue. */
134
135 #undef LIBGCC_SPEC
136 #define LIBGCC_SPEC "%{mno-cygwin: %{mthreads:-lmingwthrd} -lmingw32} -lgcc %{mno-cygwin:-lmoldname -lmsvcrt}"
137
138 /* This macro defines names of additional specifications to put in the specs
139 that can be used in various specifications like CC1_SPEC. Its definition
140 is an initializer with a subgrouping for each command option.
141
142 Each subgrouping contains a string constant, that defines the
143 specification name, and a string constant that used by the GNU CC driver
144 program.
145
146 Do not define this macro if it does not need to do anything. */
147
148 #undef SUBTARGET_EXTRA_SPECS
149 #define SUBTARGET_EXTRA_SPECS \
150 { "mingw_include_path", DEFAULT_TARGET_MACHINE }
151
152 /* We have to dynamic link to get to the system DLLs. All of libc, libm and
153 the Unix stuff is in cygwin.dll. The import library is called
154 'libcygwin.a'. For Windows applications, include more libraries, but
155 always include kernel32. We'd like to specific subsystem windows to
156 ld, but that doesn't work just yet. */
157
158 #undef LIB_SPEC
159 #define LIB_SPEC "\
160 %{pg:-lgmon} \
161 %{!mno-cygwin:-lcygwin} \
162 %{mno-cygwin:%{mthreads:-lmingwthrd} -lmingw32} \
163 %{mwindows:-lgdi32 -lcomdlg32} \
164 -luser32 -lkernel32 -ladvapi32 -lshell32"
165
166 #define LINK_SPEC W32API_LIB "\
167 %{mwindows:--subsystem windows} \
168 %{mconsole:--subsystem console} \
169 %{shared: %{mdll: %eshared and mdll are not compatible}} \
170 %{shared: --shared} %{mdll:--dll} \
171 %{static:-Bstatic} %{!static:-Bdynamic} \
172 %{shared|mdll: -e \
173 %{mno-cygwin:_DllMainCRTStartup@12} \
174 %{!mno-cygwin:__cygwin_dll_entry@12}}\
175 --dll-search-prefix=cyg"
176
177 #undef MATH_LIBRARY
178 #define MATH_LIBRARY ""
179
180 #define SIZE_TYPE "unsigned int"
181 #define PTRDIFF_TYPE "int"
182 #define WCHAR_UNSIGNED 1
183 #define WCHAR_TYPE_SIZE 16
184 #define WCHAR_TYPE "short unsigned int"
185
186 \f
187 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */
188 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
189
190 union tree_node;
191 #define TREE union tree_node *
192
193 /* Used to implement dllexport overriding dllimport semantics. It's also used
194 to handle vtables - the first pass won't do anything because
195 DECL_CONTEXT (DECL) will be 0 so i386_pe_dll{ex,im}port_p will return 0.
196 It's also used to handle dllimport override semantics. */
197 #if 0
198 #define REDO_SECTION_INFO_P(DECL) \
199 ((DECL_ATTRIBUTES (DECL) != NULL_TREE) \
200 || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL)))
201 #else
202 #define REDO_SECTION_INFO_P(DECL) 1
203 #endif
204
205 \f
206 #undef EXTRA_SECTIONS
207 #define EXTRA_SECTIONS in_drectve
208
209 #undef EXTRA_SECTION_FUNCTIONS
210 #define EXTRA_SECTION_FUNCTIONS \
211 DRECTVE_SECTION_FUNCTION \
212 SWITCH_TO_SECTION_FUNCTION
213
214 #define DRECTVE_SECTION_FUNCTION \
215 void \
216 drectve_section () \
217 { \
218 if (in_section != in_drectve) \
219 { \
220 fprintf (asm_out_file, "%s\n", "\t.section .drectve\n"); \
221 in_section = in_drectve; \
222 } \
223 }
224 void drectve_section PARAMS ((void));
225
226 /* Switch to SECTION (an `enum in_section').
227
228 ??? This facility should be provided by GCC proper.
229 The problem is that we want to temporarily switch sections in
230 ASM_DECLARE_OBJECT_NAME and then switch back to the original section
231 afterwards. */
232 #define SWITCH_TO_SECTION_FUNCTION \
233 void switch_to_section PARAMS ((enum in_section, tree)); \
234 void \
235 switch_to_section (section, decl) \
236 enum in_section section; \
237 tree decl; \
238 { \
239 switch (section) \
240 { \
241 case in_text: text_section (); break; \
242 case in_data: data_section (); break; \
243 case in_named: named_section (decl, NULL, 0); break; \
244 case in_drectve: drectve_section (); break; \
245 default: abort (); break; \
246 } \
247 }
248
249 /* Don't allow flag_pic to propagate since gas may produce invalid code
250 otherwise. */
251
252 #undef SUBTARGET_OVERRIDE_OPTIONS
253 #define SUBTARGET_OVERRIDE_OPTIONS \
254 do { \
255 if (flag_pic) \
256 { \
257 warning ("-f%s ignored for target (all code is position independent)",\
258 (flag_pic > 1) ? "PIC" : "pic"); \
259 flag_pic = 0; \
260 } \
261 } while (0) \
262
263 /* Define this macro if references to a symbol must be treated
264 differently depending on something about the variable or
265 function named by the symbol (such as what section it is in).
266
267 On i386 running Windows NT, modify the assembler name with a suffix
268 consisting of an atsign (@) followed by string of digits that represents
269 the number of bytes of arguments passed to the function, if it has the
270 attribute STDCALL.
271
272 In addition, we must mark dll symbols specially. Definitions of
273 dllexport'd objects install some info in the .drectve section.
274 References to dllimport'd objects are fetched indirectly via
275 _imp__. If both are declared, dllexport overrides. This is also
276 needed to implement one-only vtables: they go into their own
277 section and we need to set DECL_SECTION_NAME so we do that here.
278 Note that we can be called twice on the same decl. */
279
280 extern void i386_pe_encode_section_info PARAMS ((TREE));
281
282 #ifdef ENCODE_SECTION_INFO
283 #undef ENCODE_SECTION_INFO
284 #endif
285 #define ENCODE_SECTION_INFO(DECL) i386_pe_encode_section_info (DECL)
286
287 /* Utility used only in this file. */
288 #define I386_PE_STRIP_ENCODING(SYM_NAME) \
289 ((SYM_NAME) + ((SYM_NAME)[0] == '@' \
290 ? ((SYM_NAME)[3] == '*' ? 4 : 3) : 0) \
291 + ((SYM_NAME)[0] == '*' ? 1 : 0))
292
293 /* This macro gets just the user-specified name
294 out of the string in a SYMBOL_REF. Discard
295 trailing @[NUM] encoded by ENCODE_SECTION_INFO. */
296 #undef STRIP_NAME_ENCODING
297 #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \
298 do { \
299 const char *_p; \
300 const char *_name = I386_PE_STRIP_ENCODING (SYMBOL_NAME); \
301 for (_p = _name; *_p && *_p != '@'; ++_p) \
302 ; \
303 if (*_p == '@') \
304 { \
305 int _len = _p - _name; \
306 char *_new_name = (char *) alloca (_len + 1); \
307 strncpy (_new_name, _name, _len); \
308 _new_name[_len] = '\0'; \
309 (VAR) = _new_name; \
310 } \
311 else \
312 (VAR) = _name; \
313 } while (0)
314
315 \f
316 /* Output a reference to a label. */
317 #undef ASM_OUTPUT_LABELREF
318 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
319 fprintf (STREAM, "%s%s", USER_LABEL_PREFIX, \
320 I386_PE_STRIP_ENCODING (NAME)) \
321
322 /* Output a common block. */
323 #undef ASM_OUTPUT_COMMON
324 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
325 do { \
326 if (i386_pe_dllexport_name_p (NAME)) \
327 i386_pe_record_exported_symbol (NAME, 1); \
328 if (! i386_pe_dllimport_name_p (NAME)) \
329 { \
330 fprintf ((STREAM), "\t.comm\t"); \
331 assemble_name ((STREAM), (NAME)); \
332 fprintf ((STREAM), ", %d\t%s %d\n", \
333 (ROUNDED), ASM_COMMENT_START, (SIZE)); \
334 } \
335 } while (0)
336
337 /* Output the label for an initialized variable. */
338 #undef ASM_DECLARE_OBJECT_NAME
339 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
340 do { \
341 if (i386_pe_dllexport_name_p (NAME)) \
342 i386_pe_record_exported_symbol (NAME, 1); \
343 ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
344 } while (0)
345
346 \f
347 /* Emit code to check the stack when allocating more that 4000
348 bytes in one go. */
349
350 #define CHECK_STACK_LIMIT 4000
351
352 /* By default, target has a 80387, uses IEEE compatible arithmetic,
353 and returns float values in the 387 and needs stack probes */
354 #undef TARGET_SUBTARGET_DEFAULT
355
356 #define TARGET_SUBTARGET_DEFAULT \
357 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
358
359 /* This is how to output an assembler line
360 that says to advance the location counter
361 to a multiple of 2**LOG bytes. */
362
363 #undef ASM_OUTPUT_ALIGN
364 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
365 if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
366
367 /* Define this macro if in some cases global symbols from one translation
368 unit may not be bound to undefined symbols in another translation unit
369 without user intervention. For instance, under Microsoft Windows
370 symbols must be explicitly imported from shared libraries (DLLs). */
371 #define MULTIPLE_SYMBOL_SPACES
372
373 extern void i386_pe_unique_section PARAMS ((TREE, int));
374 #define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
375
376 #define SUPPORTS_ONE_ONLY 1
377
378 /* Switch into a generic section. */
379 #define TARGET_ASM_NAMED_SECTION i386_pe_asm_named_section
380
381 /* Select attributes for named sections. */
382 #define TARGET_SECTION_TYPE_FLAGS i386_pe_section_type_flags
383
384 /* Write the extra assembler code needed to declare a function
385 properly. If we are generating SDB debugging information, this
386 will happen automatically, so we only need to handle other cases. */
387 #undef ASM_DECLARE_FUNCTION_NAME
388 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
389 do \
390 { \
391 if (i386_pe_dllexport_name_p (NAME)) \
392 i386_pe_record_exported_symbol (NAME, 0); \
393 if (write_symbols != SDB_DEBUG) \
394 i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
395 ASM_OUTPUT_LABEL (FILE, NAME); \
396 } \
397 while (0)
398
399 /* Add an external function to the list of functions to be declared at
400 the end of the file. */
401 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
402 do \
403 { \
404 if (TREE_CODE (DECL) == FUNCTION_DECL) \
405 i386_pe_record_external_function (NAME); \
406 } \
407 while (0)
408
409 /* Declare the type properly for any external libcall. */
410 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
411 i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
412
413 /* This says out to put a global symbol in the BSS section. */
414 #undef ASM_OUTPUT_ALIGNED_BSS
415 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
416 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
417
418 /* Output function declarations at the end of the file. */
419 #undef ASM_FILE_END
420 #define ASM_FILE_END(FILE) \
421 i386_pe_asm_file_end (FILE)
422
423 #undef ASM_COMMENT_START
424 #define ASM_COMMENT_START " #"
425
426 /* Don't assume anything about the header files. */
427 #define NO_IMPLICIT_EXTERN_C
428
429 #define SUBTARGET_PROLOGUE \
430 if (current_function_profile \
431 && MAIN_NAME_P (DECL_NAME (current_function_decl))) \
432 { \
433 emit_call_insn (gen_rtx (CALL, VOIDmode, \
434 gen_rtx_MEM (FUNCTION_MODE, \
435 gen_rtx_SYMBOL_REF (Pmode, "_monstartup")), \
436 const0_rtx)); \
437 }
438
439 /* External function declarations. */
440
441 extern void i386_pe_record_external_function PARAMS ((const char *));
442 extern void i386_pe_declare_function_type PARAMS ((FILE *, const char *, int));
443 extern void i386_pe_record_exported_symbol PARAMS ((const char *, int));
444 extern void i386_pe_asm_file_end PARAMS ((FILE *));
445 extern int i386_pe_dllexport_name_p PARAMS ((const char *));
446 extern int i386_pe_dllimport_name_p PARAMS ((const char *));
447
448 /* For Win32 ABI compatibility */
449 #undef DEFAULT_PCC_STRUCT_RETURN
450 #define DEFAULT_PCC_STRUCT_RETURN 0
451
452 /* No data type wants to be aligned rounder than this. */
453 #undef BIGGEST_ALIGNMENT
454 #define BIGGEST_ALIGNMENT 128
455
456 /* Native complier aligns internal doubles in structures on dword boundaries. */
457 #undef BIGGEST_FIELD_ALIGNMENT
458 #define BIGGEST_FIELD_ALIGNMENT 64
459
460 /* A bitfield declared as `int' forces `int' alignment for the struct. */
461 #undef PCC_BITFIELDS_TYPE_MATTERS
462 #define PCC_BITFIELDS_TYPE_MATTERS 1
463 #define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
464
465
466 /* Enable alias attribute support. */
467 #ifndef SET_ASM_OP
468 #define SET_ASM_OP "\t.set\t"
469 #endif
470
471 /* Override GCC's relative pathname lookup (ie., relocatability) unless
472 otherwise told by other subtargets. */
473 #ifndef WIN32_NO_ABSOLUTE_INST_DIRS
474 #undef MD_STARTFILE_PREFIX
475 #define MD_STARTFILE_PREFIX "/usr/lib/"
476
477 #undef STANDARD_STARTFILE_PREFIX
478 #define STANDARD_STARTFILE_PREFIX "/usr/lib/mingw/"
479
480 #ifndef CROSS_COMPILE
481 #undef LOCAL_INCLUDE_DIR
482 #undef TOOL_INCLUDE_DIR
483 #undef SYSTEM_INCLUDE_DIR
484 #undef STANDARD_INCLUDE_DIR
485 #define STANDARD_INCLUDE_DIR 0
486 #endif /* not CROSS_COMPILE */
487 #endif /* not WIN32_NO_ABSOLUTE_INST_DIRS */
488
489 #undef TREE
490
491 #ifndef BUFSIZ
492 # undef FILE
493 #endif