1 /* Operating system specific defines to be used when targeting GCC for
2 hosting on Windows32, using GNU tools and the Windows32 API Library.
3 Copyright (C) 1997-2023 Free Software Foundation, Inc.
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 #undef DEFAULT_ABI
22 #define DEFAULT_ABI MS_ABI
23
24 /* By default, target has a 80387, uses IEEE compatible arithmetic,
25 returns float values in the 387 and needs stack probes.
26 We also align doubles to 64-bits for MSVC default compatibility.
27 Additionally we enable MS_BITFIELD_LAYOUT by default. */
28
29 #undef TARGET_SUBTARGET_DEFAULT
30 #define TARGET_SUBTARGET_DEFAULT \
31 (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS \
32 | MASK_STACK_PROBE | MASK_ALIGN_DOUBLE \
33 | MASK_MS_BITFIELD_LAYOUT)
34
35 #ifndef TARGET_USING_MCFGTHREAD
36 #define TARGET_USING_MCFGTHREAD 0
37 #endif
38
39 /* See i386/crtdll.h for an alternative definition. _INTEGRAL_MAX_BITS
40 is for compatibility with native compiler. */
41 #define EXTRA_OS_CPP_BUILTINS() \
42 do \
43 { \
44 builtin_define ("__MSVCRT__"); \
45 builtin_define ("__MINGW32__"); \
46 builtin_define ("_WIN32"); \
47 builtin_define_std ("WIN32"); \
48 builtin_define_std ("WINNT"); \
49 builtin_define_with_int_value ("_INTEGRAL_MAX_BITS", \
50 TYPE_PRECISION (intmax_type_node));\
51 if (TARGET_64BIT && ix86_abi == MS_ABI) \
52 { \
53 builtin_define ("__MINGW64__"); \
54 builtin_define_std ("WIN64"); \
55 builtin_define ("_WIN64"); \
56 } \
57 if (TARGET_USING_MCFGTHREAD) \
58 builtin_define ("__USING_MCFGTHREAD__"); \
59 } \
60 while (0)
61
62 #ifndef TARGET_USE_PTHREAD_BY_DEFAULT
63 #define SPEC_PTHREAD1 "pthread"
64 #define SPEC_PTHREAD2 "!no-pthread"
65 #else
66 #define SPEC_PTHREAD1 "!no-pthread"
67 #define SPEC_PTHREAD2 "pthread"
68 #endif
69
70 #undef SUB_LINK_ENTRY32
71 #undef SUB_LINK_ENTRY64
72 #define SUB_LINK_ENTRY32 "-e _DllMainCRTStartup@12"
73 #if defined(USE_MINGW64_LEADING_UNDERSCORES)
74 #define SUB_LINK_ENTRY64 "-e _DllMainCRTStartup"
75 #else
76 #define SUB_LINK_ENTRY64 "-e DllMainCRTStartup"
77 #endif
78
79 #undef SUB_LINK_ENTRY
80 #if TARGET_64BIT_DEFAULT
81 #define SUB_LINK_ENTRY SUB_LINK_ENTRY64
82 #else
83 #define SUB_LINK_ENTRY SUB_LINK_ENTRY32
84 #endif
85
86 #undef NATIVE_SYSTEM_HEADER_COMPONENT
87 #define NATIVE_SYSTEM_HEADER_COMPONENT "MINGW"
88
89 #undef CPP_SPEC
90 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT} " \
91 "%{" SPEC_PTHREAD1 ":-D_REENTRANT} " \
92 "%{" SPEC_PTHREAD2 ": } "
93
94 /* For Windows applications, include more libraries, but always include
95 kernel32. */
96 #undef LIB_SPEC
97 #define LIB_SPEC "%{pg:-lgmon} %{" SPEC_PTHREAD1 ":-lpthread} " \
98 "%{" SPEC_PTHREAD2 ": } " \
99 "%{mwindows:-lgdi32 -lcomdlg32} " \
100 "%{fvtable-verify=preinit:-lvtv -lpsapi; \
101 fvtable-verify=std:-lvtv -lpsapi} " \
102 "-ladvapi32 -lshell32 -luser32 -lkernel32"
103
104 /* Weak symbols do not get resolved if using a Windows dll import lib.
105 Make the unwind registration references strong undefs. */
106 #if DWARF2_UNWIND_INFO
107 /* DW2-unwind is just available for 32-bit mode. */
108 #if TARGET_64BIT_DEFAULT
109 #define SHARED_LIBGCC_UNDEFS_SPEC \
110 "%{m32: %{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}}"
111 #else
112 #define SHARED_LIBGCC_UNDEFS_SPEC \
113 "%{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}"
114 #endif
115 #else
116 #define SHARED_LIBGCC_UNDEFS_SPEC ""
117 #endif
118
119 #undef SUBTARGET_EXTRA_SPECS
120 #define SUBTARGET_EXTRA_SPECS \
121 { "shared_libgcc_undefs", SHARED_LIBGCC_UNDEFS_SPEC }
122
123 #if ! MINGW_DEFAULT_LARGE_ADDR_AWARE
124 /* This is used without --enable-large-address-aware. */
125 # define LINK_SPEC_LARGE_ADDR_AWARE ""
126 #elif ! TARGET_BI_ARCH
127 /* This is used on i686-pc-mingw32 with --enable-large-address-aware. */
128 # define LINK_SPEC_LARGE_ADDR_AWARE \
129 "%{!shared:%{!mdll:--large-address-aware}}"
130 #elif TARGET_64BIT_DEFAULT
131 /* This is used on x86_64-pc-mingw32 with --enable-large-address-aware.
132 ??? It probably doesn't work, because the linker emulation defaults
133 to i386pep, the 64-bit mode that does not support
134 --large-address-aware, and x86_64-pc-mingw32 does not override the
135 emulation to i386pe for -m32, unlike x86_64-w64-mingw32. */
136 # define LINK_SPEC_LARGE_ADDR_AWARE \
137 "%{!shared:%{!mdll:%{m32:--large-address-aware}}}"
138 #else
139 /* This would only be used if someone introduced a biarch
140 configuration that defaulted to 32-bit. */
141 # define LINK_SPEC_LARGE_ADDR_AWARE \
142 "%{!shared:%{!mdll:%{!m64:--large-address-aware}}}"
143 #endif
144
145 #if HAVE_LD_PE_DISABLE_DYNAMICBASE
146 # define LINK_SPEC_DISABLE_DYNAMICBASE \
147 "%{!shared:%{!mdll:%{no-pie:--disable-dynamicbase}}}"
148 #else
149 # define LINK_SPEC_DISABLE_DYNAMICBASE ""
150 #endif
151
152 #define LINK_SPEC "%{mwindows:--subsystem windows} \
153 %{mconsole:--subsystem console} \
154 %{shared: %{mdll: %eshared and mdll are not compatible}} \
155 %{shared: --shared} %{mdll:--dll} \
156 %{static:-Bstatic} %{!static:-Bdynamic} \
157 %{shared|mdll: " SUB_LINK_ENTRY " --enable-auto-image-base} \
158 " LINK_SPEC_LARGE_ADDR_AWARE "\
159 " LINK_SPEC_DISABLE_DYNAMICBASE "\
160 %(shared_libgcc_undefs)"
161
162 /* Include in the mingw32 libraries with libgcc */
163 #ifdef ENABLE_SHARED_LIBGCC
164 #define SHARED_LIBGCC_SPEC " \
165 %{static|static-libgcc:-lgcc -lgcc_eh} \
166 %{!static: \
167 %{!static-libgcc: \
168 %{!shared: \
169 %{!shared-libgcc:-lgcc -lgcc_eh} \
170 %{shared-libgcc:-lgcc_s -lgcc} \
171 } \
172 %{shared:-lgcc_s -lgcc} \
173 } \
174 } "
175 #else
176 #define SHARED_LIBGCC_SPEC " -lgcc "
177 #endif
178 #if TARGET_USING_MCFGTHREAD
179 #define MCFGTHREAD_SPEC " -lmcfgthread -lkernel32 -lntdll "
180 #else
181 #define MCFGTHREAD_SPEC ""
182 #endif
183 #undef REAL_LIBGCC_SPEC
184 #define REAL_LIBGCC_SPEC \
185 "%{mthreads:-lmingwthrd} -lmingw32 \
186 " SHARED_LIBGCC_SPEC " \
187 -lmoldname -lmingwex -lmsvcrt -lkernel32 " MCFGTHREAD_SPEC
188
189 #undef STARTFILE_SPEC
190 #define STARTFILE_SPEC "%{shared|mdll:dllcrt2%O%s} \
191 %{!shared:%{!mdll:crt2%O%s}} %{pg:gcrt2%O%s} \
192 crtbegin.o%s \
193 %{fvtable-verify=none:%s; \
194 fvtable-verify=preinit:vtv_start.o%s; \
195 fvtable-verify=std:vtv_start.o%s}"
196
197 #undef ENDFILE_SPEC
198 #define ENDFILE_SPEC \
199 "%{mdaz-ftz:crtfastmath.o%s;Ofast|ffast-math|funsafe-math-optimizations:%{!shared:%{!mno-daz-ftz:crtfastmath.o%s}}} \
200 %{!shared:%:if-exists(default-manifest.o%s)}\
201 %{fvtable-verify=none:%s; \
202 fvtable-verify=preinit:vtv_end.o%s; \
203 fvtable-verify=std:vtv_end.o%s} \
204 crtend.o%s"
205
206 /* Override startfile prefix defaults. */
207 #ifndef STANDARD_STARTFILE_PREFIX_1
208 #define STANDARD_STARTFILE_PREFIX_1 "/mingw/lib/"
209 #endif
210 #ifndef STANDARD_STARTFILE_PREFIX_2
211 #define STANDARD_STARTFILE_PREFIX_2 ""
212 #endif
213
214 /* For native mingw-version we need to take care that NATIVE_SYSTEM_HEADER_DIR
215 macro contains POSIX-style path. See bug 52947. */
216 #undef NATIVE_SYSTEM_HEADER_DIR
217 #define NATIVE_SYSTEM_HEADER_DIR "/mingw/include"
218
219 /* Output STRING, a string representing a filename, to FILE.
220 We canonicalize it to be in Unix format (backslashes are replaced
221 forward slashes. */
222 #undef OUTPUT_QUOTED_STRING
223 #define OUTPUT_QUOTED_STRING(FILE, STRING) \
224 do { \
225 const char *_string = (const char *) (STRING); \
226 char c; \
227 \
228 putc ('\"', (FILE)); \
229 \
230 while ((c = *_string++) != 0) \
231 { \
232 if (c == '\\') \
233 c = '/'; \
234 \
235 if (ISPRINT (c)) \
236 { \
237 if (c == '\"') \
238 putc ('\\', (FILE)); \
239 putc (c, (FILE)); \
240 } \
241 else \
242 fprintf ((FILE), "\\%03o", (unsigned char) c); \
243 } \
244 \
245 putc ('\"', (FILE)); \
246 } while (0)
247
248 /* Define as short unsigned for compatibility with MS runtime. */
249 #undef WINT_TYPE
250 #define WINT_TYPE "short unsigned int"
251
252 /* mingw32 uses the -mthreads option to enable thread support. */
253 #undef GOMP_SELF_SPECS
254 #define GOMP_SELF_SPECS "%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1): " \
255 "-mthreads -pthread}"
256 #undef GTM_SELF_SPECS
257 #define GTM_SELF_SPECS "%{fgnu-tm:-mthreads -pthread}"
258
259 /* mingw32 atexit function is safe to use in shared libraries. Use it
260 to register C++ static destructors. */
261 #define TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT hook_bool_void_true
262
263 /* Contains a pointer to type target_ovr_attr defining the target specific
264 overrides of format attributes. See c-format.h for structure
265 definition. */
266 #undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES
267 #define TARGET_OVERRIDES_FORMAT_ATTRIBUTES mingw_format_attribute_overrides
268
269 /* Specify the count of elements in TARGET_OVERRIDES_ATTRIBUTE. */
270 #undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT
271 #define TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT 3
272
273 /* Custom initialization for warning -Wpedantic-ms-format for c-format. */
274 #undef TARGET_OVERRIDES_FORMAT_INIT
275 #define TARGET_OVERRIDES_FORMAT_INIT msformat_init
276
277 /* MS specific format attributes for ms_printf, ms_scanf, ms_strftime. */
278 #undef TARGET_FORMAT_TYPES
279 #define TARGET_FORMAT_TYPES mingw_format_attributes
280
281 #undef TARGET_N_FORMAT_TYPES
282 #define TARGET_N_FORMAT_TYPES 3
283
284 #define HAVE_ENABLE_EXECUTE_STACK
285 #undef CHECK_EXECUTE_STACK_ENABLED
286 #define CHECK_EXECUTE_STACK_ENABLED flag_setstackexecutable
287
288 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygming. */
289 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
290 #if DWARF2_UNWIND_INFO
291 #define LIBGCC_EH_EXTN "_dw2"
292 #else
293 #define LIBGCC_EH_EXTN "_sjlj"
294 #endif
295 #define LIBGCC_SONAME "libgcc_s" LIBGCC_EH_EXTN "-1.dll"
296