Warning: That file was not part of the compilation database. It may have many parsing errors.

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) 1995-2017 Free Software Foundation, Inc.
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 3, or (at your option)
10any later version.
11
12GCC is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GCC; see the file COPYING3. If not see
19<http://www.gnu.org/licenses/>. */
20
21#define DBX_DEBUGGING_INFO 1
22#if TARGET_64BIT_DEFAULT || defined (HAVE_GAS_PE_SECREL32_RELOC)
23#define DWARF2_DEBUGGING_INFO 1
24#endif
25
26#undef PREFERRED_DEBUGGING_TYPE
27#if (DWARF2_DEBUGGING_INFO)
28#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
29#else
30#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
31#endif
32
33#undef TARGET_SEH
34#define TARGET_SEH (TARGET_64BIT_MS_ABI && flag_unwind_tables)
35
36/* Win64 with SEH cannot represent DRAP stack frames. Disable its use.
37 Force the use of different mechanisms to allocate aligned local data. */
38#undef MAX_STACK_ALIGNMENT
39#define MAX_STACK_ALIGNMENT (TARGET_SEH ? 128 : MAX_OFILE_ALIGNMENT)
40
41/* 32-bit Windows aligns the stack on a 4-byte boundary but SSE instructions
42 may require 16-byte alignment. */
43#undef STACK_REALIGN_DEFAULT
44#define STACK_REALIGN_DEFAULT TARGET_SSE
45
46/* Support hooks for SEH. */
47#undef TARGET_ASM_UNWIND_EMIT
48#define TARGET_ASM_UNWIND_EMIT i386_pe_seh_unwind_emit
49#undef TARGET_ASM_UNWIND_EMIT_BEFORE_INSN
50#define TARGET_ASM_UNWIND_EMIT_BEFORE_INSN false
51#undef TARGET_ASM_FUNCTION_END_PROLOGUE
52#define TARGET_ASM_FUNCTION_END_PROLOGUE i386_pe_seh_end_prologue
53#undef TARGET_ASM_EMIT_EXCEPT_PERSONALITY
54#define TARGET_ASM_EMIT_EXCEPT_PERSONALITY i386_pe_seh_emit_except_personality
55#undef TARGET_ASM_INIT_SECTIONS
56#define TARGET_ASM_INIT_SECTIONS i386_pe_seh_init_sections
57#define SUBTARGET_ASM_UNWIND_INIT i386_pe_seh_init
58
59#undef DEFAULT_ABI
60#define DEFAULT_ABI (TARGET_64BIT ? MS_ABI : SYSV_ABI)
61
62#undef TARGET_PECOFF
63#define TARGET_PECOFF 1
64
65#if ! defined (USE_MINGW64_LEADING_UNDERSCORES)
66#undef USER_LABEL_PREFIX
67#define USER_LABEL_PREFIX (TARGET_64BIT ? "" : "_")
68
69#undef LOCAL_LABEL_PREFIX
70#define LOCAL_LABEL_PREFIX (TARGET_64BIT ? "." : "")
71
72#undef ASM_GENERATE_INTERNAL_LABEL
73#define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
74 sprintf ((BUF), "*%s%s%ld", LOCAL_LABEL_PREFIX, \
75 (PREFIX), (long)(NUMBER))
76
77#undef LPREFIX
78#define LPREFIX (TARGET_64BIT ? ".L" : "L")
79
80#endif
81
82#undef DBX_REGISTER_NUMBER
83#define DBX_REGISTER_NUMBER(n) \
84 (TARGET_64BIT ? dbx64_register_map[n] \
85 : (write_symbols == DWARF2_DEBUG \
86 ? svr4_dbx_register_map[n] : dbx_register_map[n]))
87
88/* Map gcc register number to DWARF 2 CFA column number. For 32 bit
89 target, always use the svr4_dbx_register_map for DWARF .eh_frame
90 even if we don't use DWARF .debug_frame. */
91#undef DWARF_FRAME_REGNUM
92#define DWARF_FRAME_REGNUM(n) \
93 (TARGET_64BIT ? dbx64_register_map[(n)] \
94 : svr4_dbx_register_map[(n)])
95
96/* The 64-bit MS_ABI changes the set of call-used registers. */
97#undef DWARF_FRAME_REGISTERS
98#define DWARF_FRAME_REGISTERS (TARGET_64BIT ? 33 : 17)
99
100#ifdef HAVE_GAS_PE_SECREL32_RELOC
101/* Use section relative relocations for debugging offsets. Unlike
102 other targets that fake this by putting the section VMA at 0, PE
103 won't allow it. */
104#define ASM_OUTPUT_DWARF_OFFSET(FILE, SIZE, LABEL, OFFSET, SECTION) \
105 do { \
106 switch (SIZE) \
107 { \
108 case 4: \
109 fputs ("\t.secrel32\t", FILE); \
110 assemble_name (FILE, LABEL); \
111 if ((OFFSET) != 0) \
112 fprintf (FILE, "+" HOST_WIDE_INT_PRINT_DEC, \
113 (HOST_WIDE_INT) (OFFSET)); \
114 break; \
115 case 8: \
116 /* This is a hack. There is no 64-bit section relative \
117 relocation. However, the COFF format also does not \
118 support 64-bit file offsets; 64-bit applications are \
119 limited to 32-bits of code+data in any one module. \
120 Fake the 64-bit offset by zero-extending it. */ \
121 fputs ("\t.secrel32\t", FILE); \
122 assemble_name (FILE, LABEL); \
123 if ((OFFSET) != 0) \
124 fprintf (FILE, "+" HOST_WIDE_INT_PRINT_DEC, \
125 (HOST_WIDE_INT) (OFFSET)); \
126 fputs ("\n\t.long\t0", FILE); \
127 break; \
128 default: \
129 gcc_unreachable (); \
130 } \
131 } while (0)
132#endif
133
134#define TARGET_EXECUTABLE_SUFFIX ".exe"
135
136#define TARGET_OS_CPP_BUILTINS() \
137 do \
138 { \
139 if (!TARGET_64BIT) \
140 builtin_define ("_X86_=1"); \
141 if (TARGET_SEH) \
142 builtin_define ("__SEH__"); \
143 builtin_assert ("system=winnt"); \
144 builtin_define ("__stdcall=__attribute__((__stdcall__))"); \
145 builtin_define ("__fastcall=__attribute__((__fastcall__))"); \
146 builtin_define ("__thiscall=__attribute__((__thiscall__))"); \
147 builtin_define ("__cdecl=__attribute__((__cdecl__))"); \
148 if (!flag_iso) \
149 { \
150 builtin_define ("_stdcall=__attribute__((__stdcall__))"); \
151 builtin_define ("_fastcall=__attribute__((__fastcall__))"); \
152 builtin_define ("_thiscall=__attribute__((__thiscall__))"); \
153 builtin_define ("_cdecl=__attribute__((__cdecl__))"); \
154 } \
155 /* Even though linkonce works with static libs, this is needed \
156 to compare typeinfo symbols across dll boundaries. */ \
157 builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0"); \
158 builtin_define ("__GXX_TYPEINFO_EQUALITY_INLINE=0"); \
159 EXTRA_OS_CPP_BUILTINS (); \
160 } \
161 while (0)
162
163/* Get tree.c to declare a target-specific specialization of
164 merge_decl_attributes. */
165#define TARGET_DLLIMPORT_DECL_ATTRIBUTES 1
166
167/* This macro defines names of additional specifications to put in the specs
168 that can be used in various specifications like CC1_SPEC. Its definition
169 is an initializer with a subgrouping for each command option.
170
171 Each subgrouping contains a string constant, that defines the
172 specification name, and a string constant that used by the GCC driver
173 program.
174
175 Do not define this macro if it does not need to do anything. */
176
177#undef SUBTARGET_EXTRA_SPECS
178#define SUBTARGET_EXTRA_SPECS \
179 { "mingw_include_path", DEFAULT_TARGET_MACHINE }
180
181#undef MATH_LIBRARY
182#define MATH_LIBRARY ""
183
184#undef TARGET_LIBC_HAS_FUNCTION
185#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
186
187#define SIZE_TYPE (TARGET_64BIT ? "long long unsigned int" : "unsigned int")
188#define PTRDIFF_TYPE (TARGET_64BIT ? "long long int" : "int")
189
190#define WCHAR_TYPE_SIZE 16
191#define WCHAR_TYPE "short unsigned int"
192
193/* Windows64 continues to use a 32-bit long type. */
194#undef LONG_TYPE_SIZE
195#define LONG_TYPE_SIZE 32
196
197#define drectve_section() \
198 (fprintf (asm_out_file, "\t.section .drectve\n"), \
199 in_section = NULL)
200
201/* Older versions of gas don't handle 'r' as data.
202 Explicitly set data flag with 'd'. */
203#define READONLY_DATA_SECTION_ASM_OP "\t.section .rdata,\"dr\""
204
205/* Don't allow flag_pic to propagate since gas may produce invalid code
206 otherwise. */
207
208#undef SUBTARGET_OVERRIDE_OPTIONS
209#define SUBTARGET_OVERRIDE_OPTIONS \
210do { \
211 flag_pic = TARGET_64BIT ? 1 : 0; \
212} while (0)
213
214/* Define this macro if references to a symbol must be treated
215 differently depending on something about the variable or
216 function named by the symbol (such as what section it is in).
217
218 On i386 running Windows NT, modify the assembler name with a suffix
219 consisting of an atsign (@) followed by string of digits that represents
220 the number of bytes of arguments passed to the function, if it has the
221 attribute STDCALL.
222
223 In addition, we must mark dll symbols specially. Definitions of
224 dllexport'd objects install some info in the .drectve section.
225 References to dllimport'd objects are fetched indirectly via
226 _imp__. If both are declared, dllexport overrides. This is also
227 needed to implement one-only vtables: they go into their own
228 section and we need to set DECL_SECTION_NAME so we do that here.
229 Note that we can be called twice on the same decl. */
230
231#define SUBTARGET_ENCODE_SECTION_INFO i386_pe_encode_section_info
232
233/* Local and global relocs can be placed always into readonly memory
234 for PE-COFF targets. */
235#undef TARGET_ASM_RELOC_RW_MASK
236#define TARGET_ASM_RELOC_RW_MASK i386_pe_reloc_rw_mask
237
238/* Output a common block. */
239#undef ASM_OUTPUT_ALIGNED_DECL_COMMON
240#define ASM_OUTPUT_ALIGNED_DECL_COMMON \
241 i386_pe_asm_output_aligned_decl_common
242
243/* Output the label for an initialized variable. */
244#undef ASM_DECLARE_OBJECT_NAME
245#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \
246do { \
247 i386_pe_maybe_record_exported_symbol (DECL, NAME, 1); \
248 ASM_OUTPUT_LABEL ((STREAM), (NAME)); \
249} while (0)
250
251/* Output a reference to a label. Fastcall function symbols
252 keep their '@' prefix, while other symbols are prefixed
253 with user_label_prefix. */
254#undef ASM_OUTPUT_LABELREF
255#define ASM_OUTPUT_LABELREF(STREAM, NAME) \
256do { \
257 if ((NAME)[0] != FASTCALL_PREFIX) \
258 fputs (user_label_prefix, (STREAM)); \
259 fputs ((NAME), (STREAM)); \
260} while (0)
261
262/* This does much the same in memory rather than to a stream. */
263#undef TARGET_MANGLE_ASSEMBLER_NAME
264#define TARGET_MANGLE_ASSEMBLER_NAME i386_pe_mangle_assembler_name
265
266
267/* Emit code to check the stack when allocating more than 4000
268 bytes in one go. */
269#define CHECK_STACK_LIMIT 4000
270
271#undef STACK_BOUNDARY
272#define STACK_BOUNDARY (TARGET_64BIT && ix86_abi == MS_ABI ? 128 : BITS_PER_WORD)
273
274/* By default, target has a 80387, uses IEEE compatible arithmetic,
275 returns float values in the 387 and needs stack probes.
276 We also align doubles to 64-bits for MSVC default compatibility. */
277
278#undef TARGET_SUBTARGET_DEFAULT
279#define TARGET_SUBTARGET_DEFAULT \
280 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS \
281 | MASK_STACK_PROBE | MASK_ALIGN_DOUBLE)
282
283#undef TARGET_SUBTARGET64_DEFAULT
284#define TARGET_SUBTARGET64_DEFAULT \
285 MASK_128BIT_LONG_DOUBLE
286
287/* This is how to output an assembler line
288 that says to advance the location counter
289 to a multiple of 2**LOG bytes. */
290
291#undef ASM_OUTPUT_ALIGN
292#define ASM_OUTPUT_ALIGN(FILE,LOG) \
293 if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
294
295/* Windows uses explicit import from shared libraries. */
296#define MULTIPLE_SYMBOL_SPACES 1
297
298#define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
299#define TARGET_ASM_FUNCTION_RODATA_SECTION default_no_function_rodata_section
300
301#define SUPPORTS_ONE_ONLY 1
302
303/* Switch into a generic section. */
304#define TARGET_ASM_NAMED_SECTION i386_pe_asm_named_section
305
306/* Select attributes for named sections. */
307#define TARGET_SECTION_TYPE_FLAGS i386_pe_section_type_flags
308
309/* Write the extra assembler code needed to declare a function
310 properly. */
311#undef ASM_DECLARE_FUNCTION_NAME
312#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
313 i386_pe_start_function (FILE, NAME, DECL)
314
315#undef ASM_DECLARE_FUNCTION_SIZE
316#define ASM_DECLARE_FUNCTION_SIZE(FILE,NAME,DECL) \
317 i386_pe_end_function (FILE, NAME, DECL)
318
319/* Add an external function to the list of functions to be declared at
320 the end of the file. */
321#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
322 do \
323 { \
324 if (TREE_CODE (DECL) == FUNCTION_DECL) \
325 i386_pe_record_external_function ((DECL), (NAME)); \
326 } \
327 while (0)
328
329/* Declare the type properly for any external libcall. */
330#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
331 i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
332
333/* This says out to put a global symbol in the BSS section. */
334#undef ASM_OUTPUT_ALIGNED_BSS
335#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
336 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
337
338/* Output function declarations at the end of the file. */
339#undef TARGET_ASM_FILE_END
340#define TARGET_ASM_FILE_END i386_pe_file_end
341
342#undef ASM_COMMENT_START
343#define ASM_COMMENT_START " #"
344
345#ifndef DWARF2_UNWIND_INFO
346/* If configured with --disable-sjlj-exceptions, use DWARF2 for 32-bit
347 mode else default to SJLJ. 64-bit code uses SEH unless you request
348 SJLJ. */
349#if (defined (CONFIG_SJLJ_EXCEPTIONS) && !CONFIG_SJLJ_EXCEPTIONS)
350/* The logic of this #if must be kept synchronised with the logic
351 for selecting the tmake_eh_file fragment in libgcc/config.host. */
352#define DWARF2_UNWIND_INFO 1
353#else
354#define DWARF2_UNWIND_INFO 0
355#endif
356#endif
357
358/* Don't assume anything about the header files. */
359#define NO_IMPLICIT_EXTERN_C
360
361#undef PROFILE_HOOK
362#define PROFILE_HOOK(LABEL) \
363 if (MAIN_NAME_P (DECL_NAME (current_function_decl))) \
364 { \
365 emit_call_insn (gen_rtx_CALL (VOIDmode, \
366 gen_rtx_MEM (FUNCTION_MODE, \
367 gen_rtx_SYMBOL_REF (Pmode, "_monstartup")), \
368 const0_rtx)); \
369 }
370
371/* Java Native Interface (JNI) methods on Win32 are invoked using the
372 stdcall calling convention. */
373#undef MODIFY_JNI_METHOD_CALL
374#define MODIFY_JNI_METHOD_CALL(MDECL) \
375 build_type_attribute_variant ((MDECL), \
376 build_tree_list (get_identifier ("stdcall"), \
377 NULL))
378
379/* For Win32 ABI compatibility */
380#undef DEFAULT_PCC_STRUCT_RETURN
381#define DEFAULT_PCC_STRUCT_RETURN 0
382
383/* MSVC returns aggregate types of up to 8 bytes via registers.
384 See i386.c:ix86_return_in_memory. */
385#undef MS_AGGREGATE_RETURN
386#define MS_AGGREGATE_RETURN 1
387
388/* Biggest alignment supported by the object file format of this
389 machine. Use this macro to limit the alignment which can be
390 specified using the `__attribute__ ((aligned (N)))' construct. If
391 not defined, the default value is `BIGGEST_ALIGNMENT'. */
392/* IMAGE_SCN_ALIGN_8192BYTES is the largest section alignment flag
393 specified in the PECOFF60 spec. Native MS compiler also limits
394 user-specified alignment to 8192 bytes. */
395#undef MAX_OFILE_ALIGNMENT
396#define MAX_OFILE_ALIGNMENT (8192 * 8)
397
398/* BIGGEST_FIELD_ALIGNMENT macro is used directly by libobjc, There, we
399 align internal doubles in structures on dword boundaries. Otherwise,
400 support vector modes using ADJUST_FIELD_ALIGN, defined in i386.h. */
401#ifdef IN_TARGET_LIBS
402#undef BIGGEST_FIELD_ALIGNMENT
403#define BIGGEST_FIELD_ALIGNMENT 64
404#endif
405
406/* A bit-field declared as `int' forces `int' alignment for the struct. */
407#undef PCC_BITFIELD_TYPE_MATTERS
408#define PCC_BITFIELD_TYPE_MATTERS 1
409#define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
410
411/* Enable alias attribute support. */
412#ifndef SET_ASM_OP
413#define SET_ASM_OP "\t.set\t"
414#endif
415
416/* This implements the `alias' attribute, keeping any stdcall or
417 fastcall decoration. */
418#undef ASM_OUTPUT_DEF_FROM_DECLS
419#define ASM_OUTPUT_DEF_FROM_DECLS(STREAM, DECL, TARGET) \
420 do \
421 { \
422 const char *alias \
423 = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
424 i386_pe_maybe_record_exported_symbol (DECL, alias, 0); \
425 if (TREE_CODE (DECL) == FUNCTION_DECL) \
426 i386_pe_declare_function_type (STREAM, alias, \
427 TREE_PUBLIC (DECL)); \
428 ASM_OUTPUT_DEF (STREAM, alias, IDENTIFIER_POINTER (TARGET)); \
429 } while (0)
430
431/* GNU as supports weak symbols on PECOFF. */
432#ifdef HAVE_GAS_WEAK
433#define ASM_WEAKEN_LABEL(FILE, NAME) \
434 do \
435 { \
436 fputs ("\t.weak\t", (FILE)); \
437 assemble_name ((FILE), (NAME)); \
438 fputc ('\n', (FILE)); \
439 } \
440 while (0)
441
442#endif /* HAVE_GAS_WEAK */
443
444/* Decide whether it is safe to use a local alias for a virtual function
445 when constructing thunks. */
446#undef TARGET_USE_LOCAL_THUNK_ALIAS_P
447#define TARGET_USE_LOCAL_THUNK_ALIAS_P(DECL) (!DECL_ONE_ONLY (DECL))
448
449#define SUBTARGET_ATTRIBUTE_TABLE \
450 { "selectany", 0, 0, true, false, false, ix86_handle_selectany_attribute, \
451 false, NULL }
452 /* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler,
453 affects_type_identity, exclusions } */
454
455/* mcount() does not need a counter variable. */
456#undef NO_PROFILE_COUNTERS
457#define NO_PROFILE_COUNTERS 1
458
459#define TARGET_VALID_DLLIMPORT_ATTRIBUTE_P i386_pe_valid_dllimport_attribute_p
460#define TARGET_CXX_ADJUST_CLASS_AT_DEFINITION i386_pe_adjust_class_at_definition
461#define SUBTARGET_MANGLE_DECL_ASSEMBLER_NAME i386_pe_mangle_decl_assembler_name
462
463#undef TARGET_ASM_ASSEMBLE_VISIBILITY
464#define TARGET_ASM_ASSEMBLE_VISIBILITY i386_pe_assemble_visibility
465
466#undef SUB_TARGET_RECORD_STUB
467#define SUB_TARGET_RECORD_STUB i386_pe_record_stub
468
469/* Static stack checking is supported by means of probes. */
470#define STACK_CHECK_STATIC_BUILTIN 1
471

Warning: That file was not part of the compilation database. It may have many parsing errors.