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 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_std ("_WIN64");                        \
  46         }                                                       \
  47     }                                                           \
  48   while (0)
  49
  50 /* Override the standard choice of /usr/include as the default prefix
  51    to try when searching for header files.  */
  52 #undef STANDARD_INCLUDE_DIR
  53 #define STANDARD_INCLUDE_DIR "/mingw/include"
  54 #undef STANDARD_INCLUDE_COMPONENT
  55 #define STANDARD_INCLUDE_COMPONENT "MINGW"
  56
  57 #undef CPP_SPEC
  58 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{mthreads:-D_MT}"
  59
  60 /* For Windows applications, include more libraries, but always include
  61    kernel32.  */
  62 #undef LIB_SPEC
  63 #define LIB_SPEC "%{pg:-lgmon} %{mwindows:-lgdi32 -lcomdlg32} \
  64                   -luser32 -lkernel32 -ladvapi32 -lshell32"
  65
  66 /* Weak symbols do not get resolved if using a Windows dll import lib.
  67    Make the unwind registration references strong undefs.  */
  68 #if DWARF2_UNWIND_INFO
  69 #define SHARED_LIBGCC_UNDEFS_SPEC \
  70  "%{shared-libgcc: -u ___register_frame_info -u ___deregister_frame_info}"
  71 #else
  72 #define SHARED_LIBGCC_UNDEFS_SPEC ""
  73 #endif
  74
  75 #undef  SUBTARGET_EXTRA_SPECS
  76 #define SUBTARGET_EXTRA_SPECS                                           \
  77   { "shared_libgcc_undefs", SHARED_LIBGCC_UNDEFS_SPEC }
  78
  79 #define LINK_SPEC "%{mwindows:--subsystem windows} \
  80   %{mconsole:--subsystem console} \
  81   %{shared: %{mdll: %eshared and mdll are not compatible}} \
  82   %{shared: --shared} %{mdll:--dll} \
  83   %{static:-Bstatic} %{!static:-Bdynamic} \
  84   %{shared|mdll: -e _DllMainCRTStartup@12 --enable-auto-image-base} \
  85   %(shared_libgcc_undefs)"
  86
  87 /* Include in the mingw32 libraries with libgcc */
  88 #ifdef ENABLE_SHARED_LIBGCC
  89 #define SHARED_LIBGCC_SPEC "%{shared-libgcc:-lgcc_s} %{!shared-libgcc:-lgcc_eh}"
  90 #else
  91 #define SHARED_LIBGCC_SPEC /*empty*/
  92 #endif
  93 #undef REAL_LIBGCC_SPEC
  94 #define REAL_LIBGCC_SPEC \
  95   "%{mthreads:-lmingwthrd} -lmingw32 \
  96    "SHARED_LIBGCC_SPEC" \
  97    -lgcc \
  98    -lmoldname -lmingwex -lmsvcrt"
  99
 100 #undef STARTFILE_SPEC
 101 #define STARTFILE_SPEC "%{shared|mdll:dllcrt2%O%s} \
 102   %{!shared:%{!mdll:crt2%O%s}} %{pg:gcrt2%O%s} \
 103   crtbegin.o%s"
 104
 105 #undef ENDFILE_SPEC
 106 #define ENDFILE_SPEC \
 107   "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
 108   crtend.o%s"
 109
 110 /* Override startfile prefix defaults.  */
 111 #ifndef STANDARD_STARTFILE_PREFIX_1
 112 #define STANDARD_STARTFILE_PREFIX_1 "/mingw/lib/"
 113 #endif
 114 #ifndef STANDARD_STARTFILE_PREFIX_2
 115 #define STANDARD_STARTFILE_PREFIX_2 ""
 116 #endif
 117
 118 /* Put all *tf routines in libgcc.  */
 119 #undef LIBGCC2_HAS_TF_MODE
 120 #define LIBGCC2_HAS_TF_MODE 1
 121 #undef LIBGCC2_TF_CEXT
 122 #define LIBGCC2_TF_CEXT q
 123 #undef TF_SIZE
 124 #define TF_SIZE 113
 125
 126 /* Output STRING, a string representing a filename, to FILE.
 127    We canonicalize it to be in Unix format (backslashes are replaced
 128    forward slashes.  */
 129 #undef OUTPUT_QUOTED_STRING
 130 #define OUTPUT_QUOTED_STRING(FILE, STRING)               \
 131 do {                                                     \
 132   char c;                                                \
 133                                                          \
 134   putc ('\"', asm_file);                                 \
 135                                                          \
 136   while ((c = *string++) != 0)                           \
 137     {                                                    \
 138       if (c == '\\')                                     \
 139         c = '/';                                         \
 140                                                          \
 141       if (ISPRINT (c))                                   \
 142         {                                                \
 143           if (c == '\"')                                 \
 144             putc ('\\', asm_file);                       \
 145           putc (c, asm_file);                            \
 146         }                                                \
 147       else                                               \
 148         fprintf (asm_file, "\\%03o", (unsigned char) c); \
 149     }                                                    \
 150                                                          \
 151   putc ('\"', asm_file);                                 \
 152 } while (0)
 153
 154 /* Define as short unsigned for compatibility with MS runtime.  */
 155 #undef WINT_TYPE
 156 #define WINT_TYPE "short unsigned int"
 157
 158 /* mingw32 uses the  -mthreads option to enable thread support.  */
 159 #undef GOMP_SELF_SPECS
 160 #define GOMP_SELF_SPECS "%{fopenmp: -mthreads}"
 161
 162 /* mingw32 atexit function is safe to use in shared libraries.  Use it
 163    to register C++ static destructors.  */
 164 #define TARGET_CXX_USE_ATEXIT_FOR_CXA_ATEXIT hook_bool_void_true
 165
 166 /* Contains a pointer to type target_ovr_attr defining the target specific
 167    overrides of format attributes.  See c-format.h for structure
 168    definition.  */
 169 #undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES
 170 #define TARGET_OVERRIDES_FORMAT_ATTRIBUTES mingw_format_attribute_overrides
 171
 172 /* Specify the count of elements in TARGET_OVERRIDES_ATTRIBUTE.  */
 173 #undef TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT
 174 #define TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT 3
 175
 176 /* Custom initialization for warning -Wpedantic-ms-format for c-format.  */
 177 #undef TARGET_OVERRIDES_FORMAT_INIT
 178 #define TARGET_OVERRIDES_FORMAT_INIT msformat_init
 179
 180 /* MS specific format attributes for ms_printf, ms_scanf, ms_strftime.  */
 181 #undef TARGET_FORMAT_TYPES
 182 #define TARGET_FORMAT_TYPES mingw_format_attributes
 183
 184 #undef TARGET_N_FORMAT_TYPES
 185 #define TARGET_N_FORMAT_TYPES 3
 186
 187 /* Let defaults.h definition of TARGET_USE_JCR_SECTION apply. */
 188 #undef TARGET_USE_JCR_SECTION
 189
 190 #undef MINGW_ENABLE_EXECUTE_STACK
 191 #define MINGW_ENABLE_EXECUTE_STACK     \
 192 extern void __enable_execute_stack (void *);    \
 193 void         \
 194 __enable_execute_stack (void *addr)                                     \
 195 {                                                                       \
 196   MEMORY_BASIC_INFORMATION b;                                           \
 197   if (!VirtualQuery (addr, &b, sizeof(b)))                              \
 198     abort ();                                                           \
 199   VirtualProtect (b.BaseAddress, b.RegionSize, PAGE_EXECUTE_READWRITE,  \
 200                   &b.Protect);                                          \
 201 }
 202
 203 #undef ENABLE_EXECUTE_STACK
 204 #define ENABLE_EXECUTE_STACK MINGW_ENABLE_EXECUTE_STACK
 205
 206 #ifdef IN_LIBGCC2
 207 #include <windows.h>
 208 #endif
 209
 210 /* For 64-bit Windows we can't use DW2 unwind info. Also for multilib
 211    builds we can't use it, too.  */
 212 #if !TARGET_64BIT && !defined (TARGET_BI_ARCH)
 213 #define MD_UNWIND_SUPPORT "config/i386/w32-unwind.h"
 214 #endif
 215
 216 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygming. */
 217 /* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
 218 #if DWARF2_UNWIND_INFO
 219 #define LIBGCC_EH_EXTN "_dw2"
 220 #else
 221 #define LIBGCC_EH_EXTN "_sjlj"
 222 #endif
 223 #define LIBGCC_SONAME "libgcc_s" LIBGCC_EH_EXTN "-1.dll"