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comparison gcc/config/i386/cygming.h @ 0:a06113de4d67

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first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 58ad6c70ea60
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-1:000000000000 0:a06113de4d67
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, 2002, 2003,
4 2004, 2005, 2007, 2008, 2009
5 Free Software Foundation, Inc.
6
7 This file is part of GCC.
8
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3, or (at your option)
12 any later version.
13
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
22
23 #define DBX_DEBUGGING_INFO 1
24 #define SDB_DEBUGGING_INFO 1
25 #if TARGET_64BIT_DEFAULT || defined (HAVE_GAS_PE_SECREL32_RELOC)
26 #define DWARF2_DEBUGGING_INFO 1
27 #endif
28
29 #undef PREFERRED_DEBUGGING_TYPE
30 #if (DWARF2_DEBUGGING_INFO)
31 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
32 #else
33 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
34 #endif
35
36 #undef TARGET_64BIT_MS_ABI
37 #define TARGET_64BIT_MS_ABI (!cfun ? DEFAULT_ABI == MS_ABI : TARGET_64BIT && cfun->machine->call_abi == MS_ABI)
38
39 #undef DEFAULT_ABI
40 #define DEFAULT_ABI (TARGET_64BIT ? MS_ABI : SYSV_ABI)
41
42 #undef DBX_REGISTER_NUMBER
43 #define DBX_REGISTER_NUMBER(n) \
44 (TARGET_64BIT ? dbx64_register_map[n] \
45 : (write_symbols == DWARF2_DEBUG \
46 ? svr4_dbx_register_map[n] : dbx_register_map[n]))
47
48 /* Map gcc register number to DWARF 2 CFA column number. For 32 bit
49 target, always use the svr4_dbx_register_map for DWARF .eh_frame
50 even if we don't use DWARF .debug_frame. */
51 #undef DWARF_FRAME_REGNUM
52 #define DWARF_FRAME_REGNUM(n) TARGET_64BIT \
53 ? dbx64_register_map[(n)] : svr4_dbx_register_map[(n)]
54
55 #ifdef HAVE_GAS_PE_SECREL32_RELOC
56 /* Use section relative relocations for debugging offsets. Unlike
57 other targets that fake this by putting the section VMA at 0, PE
58 won't allow it. */
59 #define ASM_OUTPUT_DWARF_OFFSET(FILE, SIZE, LABEL, SECTION) \
60 do { \
61 if (SIZE != 4 && (!TARGET_64BIT || SIZE != 8)) \
62 abort (); \
63 \
64 fputs ("\t.secrel32\t", FILE); \
65 assemble_name (FILE, LABEL); \
66 } while (0)
67 #endif
68
69 #define TARGET_EXECUTABLE_SUFFIX ".exe"
70
71 #include <stdio.h>
72
73 #define TARGET_OS_CPP_BUILTINS() \
74 do \
75 { \
76 builtin_define ("_X86_=1"); \
77 builtin_assert ("system=winnt"); \
78 builtin_define ("__stdcall=__attribute__((__stdcall__))"); \
79 builtin_define ("__fastcall=__attribute__((__fastcall__))"); \
80 builtin_define ("__cdecl=__attribute__((__cdecl__))"); \
81 if (!flag_iso) \
82 { \
83 builtin_define ("_stdcall=__attribute__((__stdcall__))"); \
84 builtin_define ("_fastcall=__attribute__((__fastcall__))"); \
85 builtin_define ("_cdecl=__attribute__((__cdecl__))"); \
86 } \
87 /* Even though linkonce works with static libs, this is needed \
88 to compare typeinfo symbols across dll boundaries. */ \
89 builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0"); \
90 builtin_define ("__GXX_TYPEINFO_EQUALITY_INLINE=0"); \
91 EXTRA_OS_CPP_BUILTINS (); \
92 } \
93 while (0)
94
95 /* Get tree.c to declare a target-specific specialization of
96 merge_decl_attributes. */
97 #define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
98
99 /* This macro defines names of additional specifications to put in the specs
100 that can be used in various specifications like CC1_SPEC. Its definition
101 is an initializer with a subgrouping for each command option.
102
103 Each subgrouping contains a string constant, that defines the
104 specification name, and a string constant that used by the GCC driver
105 program.
106
107 Do not define this macro if it does not need to do anything. */
108
109 #undef SUBTARGET_EXTRA_SPECS
110 #define SUBTARGET_EXTRA_SPECS \
111 { "mingw_include_path", DEFAULT_TARGET_MACHINE }
112
113 #undef MATH_LIBRARY
114 #define MATH_LIBRARY ""
115
116 #define SIZE_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
117 #define PTRDIFF_TYPE (TARGET_64BIT ? "long long int" : "int")
118
119 #define WCHAR_TYPE_SIZE 16
120 #define WCHAR_TYPE "short unsigned int"
121
122 /* Windows64 continues to use a 32-bit long type. */
123 #undef LONG_TYPE_SIZE
124 #define LONG_TYPE_SIZE 32
125
126 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */
127 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
128 /* Enable push_macro & pop_macro */
129 #define HANDLE_PRAGMA_PUSH_POP_MACRO 1
130
131 union tree_node;
132 #define TREE union tree_node *
133
134 #define drectve_section() \
135 (fprintf (asm_out_file, "\t.section .drectve\n"), \
136 in_section = NULL)
137
138 /* Older versions of gas don't handle 'r' as data.
139 Explicitly set data flag with 'd'. */
140 #define READONLY_DATA_SECTION_ASM_OP "\t.section .rdata,\"dr\""
141
142 /* Don't allow flag_pic to propagate since gas may produce invalid code
143 otherwise. */
144
145 #undef SUBTARGET_OVERRIDE_OPTIONS
146 #define SUBTARGET_OVERRIDE_OPTIONS \
147 do { \
148 if (flag_pic) \
149 { \
150 warning (0, "-f%s ignored for target (all code is position independent)",\
151 (flag_pic > 1) ? "PIC" : "pic"); \
152 flag_pic = 0; \
153 } \
154 } while (0) \
155
156 /* Define this macro if references to a symbol must be treated
157 differently depending on something about the variable or
158 function named by the symbol (such as what section it is in).
159
160 On i386 running Windows NT, modify the assembler name with a suffix
161 consisting of an atsign (@) followed by string of digits that represents
162 the number of bytes of arguments passed to the function, if it has the
163 attribute STDCALL.
164
165 In addition, we must mark dll symbols specially. Definitions of
166 dllexport'd objects install some info in the .drectve section.
167 References to dllimport'd objects are fetched indirectly via
168 _imp__. If both are declared, dllexport overrides. This is also
169 needed to implement one-only vtables: they go into their own
170 section and we need to set DECL_SECTION_NAME so we do that here.
171 Note that we can be called twice on the same decl. */
172
173 #define SUBTARGET_ENCODE_SECTION_INFO i386_pe_encode_section_info
174
175 /* Output a common block. */
176 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON
177 #define ASM_OUTPUT_ALIGNED_DECL_COMMON \
178 i386_pe_asm_output_aligned_decl_common
179
180 /* Output the label for an initialized variable. */
181 #undef ASM_DECLARE_OBJECT_NAME
182 #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
183 do { \
184 i386_pe_maybe_record_exported_symbol (DECL, NAME, 1); \
185 ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
186 } while (0)
187
188 /* Output a reference to a label. Fastcall function symbols
189 keep their '@' prefix, while other symbols are prefixed
190 with user_label_prefix. */
191 #undef ASM_OUTPUT_LABELREF
192 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
193 do { \
194 if ((NAME)[0] != FASTCALL_PREFIX) \
195 fputs (user_label_prefix, (STREAM)); \
196 fputs ((NAME), (STREAM)); \
197 } while (0)
198
199
200 /* Emit code to check the stack when allocating more than 4000
201 bytes in one go. */
202 #define CHECK_STACK_LIMIT 4000
203
204 #undef STACK_BOUNDARY
205 #define STACK_BOUNDARY (DEFAULT_ABI == MS_ABI ? 128 : BITS_PER_WORD)
206
207 /* By default, target has a 80387, uses IEEE compatible arithmetic,
208 returns float values in the 387 and needs stack probes.
209 We also align doubles to 64-bits for MSVC default compatibility. */
210
211 #undef TARGET_SUBTARGET_DEFAULT
212 #define TARGET_SUBTARGET_DEFAULT \
213 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS \
214 | MASK_STACK_PROBE | MASK_ALIGN_DOUBLE)
215
216 #undef TARGET_SUBTARGET64_DEFAULT
217 #define TARGET_SUBTARGET64_DEFAULT \
218 MASK_128BIT_LONG_DOUBLE
219
220 /* This is how to output an assembler line
221 that says to advance the location counter
222 to a multiple of 2**LOG bytes. */
223
224 #undef ASM_OUTPUT_ALIGN
225 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
226 if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
227
228 /* Windows uses explicit import from shared libraries. */
229 #define MULTIPLE_SYMBOL_SPACES 1
230
231 #define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
232 #define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
233
234 #define SUPPORTS_ONE_ONLY 1
235
236 /* Switch into a generic section. */
237 #define TARGET_ASM_NAMED_SECTION i386_pe_asm_named_section
238
239 /* Select attributes for named sections. */
240 #define TARGET_SECTION_TYPE_FLAGS i386_pe_section_type_flags
241
242 /* Write the extra assembler code needed to declare a function
243 properly. If we are generating SDB debugging information, this
244 will happen automatically, so we only need to handle other cases. */
245 #undef ASM_DECLARE_FUNCTION_NAME
246 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
247 do \
248 { \
249 i386_pe_maybe_record_exported_symbol (DECL, NAME, 0); \
250 if (write_symbols != SDB_DEBUG) \
251 i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
252 ASM_OUTPUT_LABEL (FILE, NAME); \
253 } \
254 while (0)
255
256 /* Add an external function to the list of functions to be declared at
257 the end of the file. */
258 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
259 do \
260 { \
261 if (TREE_CODE (DECL) == FUNCTION_DECL) \
262 i386_pe_record_external_function ((DECL), (NAME)); \
263 } \
264 while (0)
265
266 /* Declare the type properly for any external libcall. */
267 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
268 i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
269
270 /* This says out to put a global symbol in the BSS section. */
271 #undef ASM_OUTPUT_ALIGNED_BSS
272 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
273 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
274
275 /* Output function declarations at the end of the file. */
276 #undef TARGET_ASM_FILE_END
277 #define TARGET_ASM_FILE_END i386_pe_file_end
278
279 #undef ASM_COMMENT_START
280 #define ASM_COMMENT_START " #"
281
282 #ifndef DWARF2_UNWIND_INFO
283 /* If configured with --disable-sjlj-exceptions, use DWARF2, else
284 default to SJLJ. */
285 #if (defined (CONFIG_SJLJ_EXCEPTIONS) && !CONFIG_SJLJ_EXCEPTIONS)
286 /* The logic of this #if must be kept synchronised with the logic
287 for selecting the tmake_eh_file fragment in config.gcc. */
288 #define DWARF2_UNWIND_INFO 1
289 #else
290 #define DWARF2_UNWIND_INFO 0
291 #endif
292 #endif
293
294 /* Don't assume anything about the header files. */
295 #define NO_IMPLICIT_EXTERN_C
296
297 #undef PROFILE_HOOK
298 #define PROFILE_HOOK(LABEL) \
299 if (MAIN_NAME_P (DECL_NAME (current_function_decl))) \
300 { \
301 emit_call_insn (gen_rtx_CALL (VOIDmode, \
302 gen_rtx_MEM (FUNCTION_MODE, \
303 gen_rtx_SYMBOL_REF (Pmode, "_monstartup")), \
304 const0_rtx)); \
305 }
306
307 /* Java Native Interface (JNI) methods on Win32 are invoked using the
308 stdcall calling convention. */
309 #undef MODIFY_JNI_METHOD_CALL
310 #define MODIFY_JNI_METHOD_CALL(MDECL) \
311 build_type_attribute_variant ((MDECL), \
312 build_tree_list (get_identifier ("stdcall"), \
313 NULL))
314
315 /* For Win32 ABI compatibility */
316 #undef DEFAULT_PCC_STRUCT_RETURN
317 #define DEFAULT_PCC_STRUCT_RETURN 0
318
319 /* MSVC returns aggregate types of up to 8 bytes via registers.
320 See i386.c:ix86_return_in_memory. */
321 #undef MS_AGGREGATE_RETURN
322 #define MS_AGGREGATE_RETURN 1
323
324 /* Biggest alignment supported by the object file format of this
325 machine. Use this macro to limit the alignment which can be
326 specified using the `__attribute__ ((aligned (N)))' construct. If
327 not defined, the default value is `BIGGEST_ALIGNMENT'. */
328 /* IMAGE_SCN_ALIGN_8192BYTES is the largest section alignment flag
329 specified in the PECOFF60 spec. Native MS compiler also limits
330 user-specified alignment to 8192 bytes. */
331 #undef MAX_OFILE_ALIGNMENT
332 #define MAX_OFILE_ALIGNMENT (8192 * 8)
333
334 /* BIGGEST_FIELD_ALIGNMENT macro is used directly by libobjc, There, we
335 align internal doubles in structures on dword boundaries. Otherwise,
336 support vector modes using ADJUST_FIELD_ALIGN, defined in i386.h. */
337 #ifdef IN_TARGET_LIBS
338 #undef BIGGEST_FIELD_ALIGNMENT
339 #define BIGGEST_FIELD_ALIGNMENT 64
340 #endif
341
342 /* A bit-field declared as `int' forces `int' alignment for the struct. */
343 #undef PCC_BITFIELD_TYPE_MATTERS
344 #define PCC_BITFIELD_TYPE_MATTERS 1
345 #define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
346
347 /* Enable alias attribute support. */
348 #ifndef SET_ASM_OP
349 #define SET_ASM_OP "\t.set\t"
350 #endif
351
352 /* This implements the `alias' attribute, keeping any stdcall or
353 fastcall decoration. */
354 #undef ASM_OUTPUT_DEF_FROM_DECLS
355 #define ASM_OUTPUT_DEF_FROM_DECLS(STREAM, DECL, TARGET) \
356 do \
357 { \
358 const char *alias \
359 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
360 if (TREE_CODE (DECL) == FUNCTION_DECL) \
361 i386_pe_declare_function_type (STREAM, alias, \
362 TREE_PUBLIC (DECL)); \
363 ASM_OUTPUT_DEF (STREAM, alias, IDENTIFIER_POINTER (TARGET)); \
364 } while (0)
365
366 /* GNU as supports weak symbols on PECOFF. */
367 #ifdef HAVE_GAS_WEAK
368 #define ASM_WEAKEN_LABEL(FILE, NAME) \
369 do \
370 { \
371 fputs ("\t.weak\t", (FILE)); \
372 assemble_name ((FILE), (NAME)); \
373 fputc ('\n', (FILE)); \
374 } \
375 while (0)
376 #endif /* HAVE_GAS_WEAK */
377
378 /* FIXME: SUPPORTS_WEAK && TARGET_HAVE_NAMED_SECTIONS is true,
379 but for .jcr section to work we also need crtbegin and crtend
380 objects. */
381 #define TARGET_USE_JCR_SECTION 0
382
383 /* Decide whether it is safe to use a local alias for a virtual function
384 when constructing thunks. */
385 #undef TARGET_USE_LOCAL_THUNK_ALIAS_P
386 #define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) (!DECL_ONE_ONLY (DECL))
387
388 #define SUBTARGET_ATTRIBUTE_TABLE \
389 { "selectany", 0, 0, true, false, false, ix86_handle_selectany_attribute }
390 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
391
392 /* mcount() does not need a counter variable. */
393 #undef NO_PROFILE_COUNTERS
394 #define NO_PROFILE_COUNTERS 1
395
396 #define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P i386_pe_valid_dllimport_attribute_p
397 #define TARGET_CXX_ADJUST_CLASS_AT_DEFINITION i386_pe_adjust_class_at_definition
398 #define TARGET_MANGLE_DECL_ASSEMBLER_NAME i386_pe_mangle_decl_assembler_name
399
400 #undef TREE
401
402 #ifndef BUFSIZ
403 # undef FILE
404 #endif