gcc/config/i386/mingw32.h

   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, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008,
   4    2009, 2010 Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC 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 3, or (at your option)
  11 any later version.
  12
  13 GCC 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 GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #undef TARGET_VERSION
  23 #if TARGET_64BIT_DEFAULT
  24 #define TARGET_VERSION fprintf (stderr,"(x86_64 MinGW");
  25 #else
  26 #define TARGET_VERSION fprintf (stderr," (x86 MinGW)");
  27 #endif
  28
  29 /* See i386/crtdll.h for an alternative definition. _INTEGRAL_MAX_BITS
  30    is for compatibility with native compiler.  */
  31 #define EXTRA_OS_CPP_BUILTINS()                                 \
  32   do                                                            \
  33     {                                                           \
  34       builtin_define ("__MSVCRT__");                            \
  35       builtin_define ("__MINGW32__");                           \
  36       builtin_define ("_WIN32");                                \
  37       builtin_define_std ("WIN32");                             \
  38       builtin_define_std ("WINNT");                             \
  39       builtin_define_with_int_value ("_INTEGRAL_MAX_BITS",      \
  40                                      TYPE_PRECISION (intmax_type_node));\
  41       if (TARGET_64BIT && ix86_abi == MS_ABI)                   \
  42         {                                                       \
  43           builtin_define ("__MINGW64__");                       \
  44           builtin_define_std ("WIN64");                         \
  45           builtin_define ("_WIN64");                            \
  46         }                                                       \
  47     }                                                           \
  48   while (0)
  49
  50 #undef SUB_LINK_ENTRY32
  51 #undef SUB_LINK_ENTRY64
  52 #define SUB_LINK_ENTRY32 "-e _DllMainCRTStartup@12"
  53 #if defined(USE_MINGW64_LEADING_UNDERSCORES)
  54 #define SUB_LINK_ENTRY64 "-e _DllMainCRTStartup"
  55 #else
  56 #define SUB_LINK_ENTRY64 "-e DllMainCRTStartup"
  57 #endif
  58
  59 #undef SUB_LINK_ENTRY
  60 #if TARGET_64BIT_DEFAULT
  61 #define SUB_LINK_ENTRY SUB_LINK_ENTRY64
  62 #else
  63 #define SUB_LINK_ENTRY SUB_LINK_ENTRY32
  64 #endif
  65
  66 /* Override the standard choice of /usr/include as the default prefix
  67    to try when searching for header files.  */
  68 #undef STANDARD_INCLUDE_DIR
  69 #define STANDARD_INCLUDE_DIR "/mingw/include"
  70 #undef STANDARD_INCLUDE_COMPONENT
  71 #define STANDARD_INCLUDE_COMPONENT "MINGW"
  72
  73 #undef CPP_SPEC
  74 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT}"
  75
  76 /* For Windows applications, include more libraries, but always include
  77    kernel32.  */
  78 #undef LIB_SPEC
  79 #define LIB_SPEC "%{pg:-lgmon} %{mwindows:-lgdi32 -lcomdlg32} \
  80                   -ladvapi32 -lshell32 -luser32 -lkernel32"
  81
  82 /* Weak symbols do not get resolved if using a Windows dll import lib.
  83    Make the unwind registration references strong undefs.  */
  84 #if DWARF2_UNWIND_INFO
  85 /* DW2-unwind is just available for 32-bit mode.  */
  86 #if TARGET_64BIT_DEFAULT
  87 #error DW2 unwind is not available for 64-bit.
  88 #endif
  89 #define SHARED_LIBGCC_UNDEFS_SPEC \
  90  "%{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}"
  91 #else
  92 #define SHARED_LIBGCC_UNDEFS_SPEC ""
  93 #endif
  94
  95 #undef  SUBTARGET_EXTRA_SPECS
  96 #define SUBTARGET_EXTRA_SPECS                                           \
  97   { "shared_libgcc_undefs", SHARED_LIBGCC_UNDEFS_SPEC }
  98
  99 #define LINK_SPEC "%{mwindows:--subsystem windows} \
 100   %{mconsole:--subsystem console} \
 101   %{shared: %{mdll: %eshared and mdll are not compatible}} \
 102   %{shared: --shared} %{mdll:--dll} \
 103   %{static:-Bstatic} %{!static:-Bdynamic} \
 104   %{shared|mdll: " SUB_LINK_ENTRY " --enable-auto-image-base} \
 105   %(shared_libgcc_undefs)"
 106
 107 /* Include in the mingw32 libraries with libgcc */
 108 #ifdef ENABLE_SHARED_LIBGCC
 109 #define SHARED_LIBGCC_SPEC "%{shared-libgcc:-lgcc_s} %{!shared-libgcc:-lgcc_eh}"
 110 #else
 111 #define SHARED_LIBGCC_SPEC /*empty*/
 112 #endif
 113 #undef REAL_LIBGCC_SPEC
 114 #define REAL_LIBGCC_SPEC \
 115   "%{mthreads:-lmingwthrd} -lmingw32 \
 116    "SHARED_LIBGCC_SPEC" \
 117    -lgcc \
 118    -lmoldname -lmingwex -lmsvcrt"
 119
 120 #undef STARTFILE_SPEC
 121 #define STARTFILE_SPEC "%{shared|mdll:dllcrt2%O%s} \
 122   %{!shared:%{!mdll:crt2%O%s}} %{pg:gcrt2%O%s} \
 123   crtbegin.o%s"
 124
 125 #undef ENDFILE_SPEC
 126 #define ENDFILE_SPEC \
 127   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 128   crtend.o%s"
 129
 130 /* Override startfile prefix defaults.  */
 131 #ifndef STANDARD_STARTFILE_PREFIX_1
 132 #define STANDARD_STARTFILE_PREFIX_1 "/mingw/lib/"
 133 #endif
 134 #ifndef STANDARD_STARTFILE_PREFIX_2
 135 #define STANDARD_STARTFILE_PREFIX_2 ""
 136 #endif
 137
 138 /* Output STRING, a string representing a filename, to FILE.
 139    We canonicalize it to be in Unix format (backslashes are replaced
 140    forward slashes.  */
 141 #undef OUTPUT_QUOTED_STRING
 142 #define OUTPUT_QUOTED_STRING(FILE, STRING)               \
 143 do {                                                     \
 144   char c;                                                \
 145                                                          \
 146   putc ('\"', asm_file);                                 \
 147                                                          \
 148   while ((c = *string++) != 0)                           \
 149     {                                                    \
 150       if (c == '\\')                                     \
 151         c = '/';                                         \
 152                                                          \
 153       if (ISPRINT (c))                                   \
 154         {                                                \
 155           if (c == '\"')                                 \
 156             putc ('\\', asm_file);                       \
 157           putc (c, asm_file);                            \
 158         }                                                \
 159       else                                               \
 160         fprintf (asm_file, "\\%03o", (unsigned char) c); \
 161     }                                                    \
 162                                                          \
 163   putc ('\"', asm_file);                                 \
 164 } while (0)
 165
 166 /* Define as short unsigned for compatibility with MS runtime.  */
 167 #undef WINT_TYPE
 168 #define WINT_TYPE "short unsigned int"
 169
 170 /* mingw32 uses the  -mthreads option to enable thread support.  */
 171 #undef GOMP_SELF_SPECS
 172 #define GOMP_SELF_SPECS "%{fopenmp: -mthreads}"
 173
 174 /* mingw32 atexit function is safe to use in shared libraries.  Use it
 175    to register C++ static destructors.  */
 176 #define TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT hook_bool_void_true
 177
 178 /* Contains a pointer to type target_ovr_attr defining the target specific
 179    overrides of format attributes.  See c-format.h for structure
 180    definition.  */
 181 #undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES
 182 #define TARGET_OVERRIDES_FORMAT_ATTRIBUTES mingw_format_attribute_overrides
 183
 184 /* Specify the count of elements in TARGET_OVERRIDES_ATTRIBUTE.  */
 185 #undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT
 186 #define TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT 3
 187
 188 /* Custom initialization for warning -Wpedantic-ms-format for c-format.  */
 189 #undef TARGET_OVERRIDES_FORMAT_INIT
 190 #define TARGET_OVERRIDES_FORMAT_INIT msformat_init
 191
 192 /* MS specific format attributes for ms_printf, ms_scanf, ms_strftime.  */
 193 #undef TARGET_FORMAT_TYPES
 194 #define TARGET_FORMAT_TYPES mingw_format_attributes
 195
 196 #undef TARGET_N_FORMAT_TYPES
 197 #define TARGET_N_FORMAT_TYPES 3
 198
 199 /* Let defaults.h definition of TARGET_USE_JCR_SECTION apply. */
 200 #undef TARGET_USE_JCR_SECTION
 201
 202 #undef MINGW_ENABLE_EXECUTE_STACK
 203 #define MINGW_ENABLE_EXECUTE_STACK     \
 204 extern void __enable_execute_stack (void *);    \
 205 void         \
 206 __enable_execute_stack (void *addr)                                     \
 207 {                                                                       \
 208   MEMORY_BASIC_INFORMATION b;                                           \
 209   if (!VirtualQuery (addr, &b, sizeof(b)))                              \
 210     abort ();                                                           \
 211   VirtualProtect (b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE,  \
 212                   &b.Protect);                                          \
 213 }
 214
 215 #undef ENABLE_EXECUTE_STACK
 216 #define ENABLE_EXECUTE_STACK MINGW_ENABLE_EXECUTE_STACK
 217 #undef  CHECK_EXECUTE_STACK_ENABLED
 218 #define CHECK_EXECUTE_STACK_ENABLED flag_setstackexecutable
 219
 220 #ifdef IN_LIBGCC2
 221 #include <windows.h>
 222 #endif
 223
 224 /* For 64-bit Windows we can't use DW2 unwind info. Also for multilib
 225    builds we can't use it, too.  */
 226 #if !TARGET_64BIT_DEFAULT && !defined (TARGET_BI_ARCH)
 227 #define MD_UNWIND_SUPPORT "config/i386/w32-unwind.h"
 228 #endif
 229
 230 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygming. */
 231 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
 232 #if DWARF2_UNWIND_INFO
 233 #define LIBGCC_EH_EXTN "_dw2"
 234 #else
 235 #define LIBGCC_EH_EXTN "_sjlj"
 236 #endif
 237 #define LIBGCC_SONAME "libgcc_s" LIBGCC_EH_EXTN "-1.dll"
 238
 239 /* We should find a way to not have to update this manually.  */
 240 #define LIBGCJ_SONAME "libgcj" /*LIBGCC_EH_EXTN*/ "-12.dll"
 241