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[pf3gnuchains/gcc-fork.git] / gcc / config / i386 / cygwin.h
index b29c66c..bb43d4f 100644 (file)
 /* Operating system specific defines to be used when targeting GCC for
-   hosting on Windows NT 3.x, using a Unix style C library and tools,
-   as distinct from winnt.h, which is used to build GCC for use with a
-   windows style library and tool set and uses the Microsoft tools.
-   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
-   Free Software Foundation, Inc.
+   hosting on Windows32, using a Unix style C library and tools.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+   2007, 2008, 2009 Free Software Foundation, Inc.
 
-This file is part of GNU CC.
+This file is part of GCC.
 
-GNU CC is free software; you can redistribute it and/or modify
+GCC is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
 any later version.
 
-GNU CC is distributed in the hope that it will be useful,
+GCC is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING.  If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-#define YES_UNDERSCORES
-
-#define DBX_DEBUGGING_INFO 
-#define SDB_DEBUGGING_INFO 
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-
-#include "i386/gas.h"
-#include "dbxcoff.h"
-
-/* Augment TARGET_SWITCHES with the cygwin/no-cygwin options. */
-#define MASK_WIN32 0x40000000 /* Use -lming32 interface */
-#define MASK_CYGWIN  0x20000000 /* Use -lcygwin interface */
-#define MASK_WINDOWS 0x10000000 /* Use windows interface */
-#define MASK_DLL     0x08000000 /* Use dll interface    */
-#define MASK_NOP_FUN_DLLIMPORT 0x20000 /* Ignore dllimport for functions */
-
-#define TARGET_WIN32             (target_flags & MASK_WIN32)
-#define TARGET_CYGWIN            (target_flags & MASK_CYGWIN)
-#define TARGET_WINDOWS           (target_flags & MASK_WINDOWS)
-#define TARGET_DLL               (target_flags & MASK_DLL)
-#define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT)
-
-#undef  SUBTARGET_SWITCHES
-#define SUBTARGET_SWITCHES \
-{ "cygwin",              MASK_CYGWIN,                                  \
-  N_("Use the Cygwin interface") },                                    \
-{ "no-cygwin",           MASK_WIN32,                                   \
-  N_("Use the Mingw32 interface") },                                   \
-{ "windows",             MASK_WINDOWS, N_("Create GUI application") }, \
-{ "no-win32",            -MASK_WIN32, N_("Don't set Windows defines") },\
-{ "console",             -MASK_WINDOWS,                                \
-  N_("Create console application") },                                  \
-{ "dll",                 MASK_DLL, N_("Generate code for a DLL") },    \
-{ "nop-fun-dllimport",   MASK_NOP_FUN_DLLIMPORT,                       \
-  N_("Ignore dllimport for functions") },                              \
-{ "no-nop-fun-dllimport", -MASK_NOP_FUN_DLLIMPORT, "" }, \
-{ "threads",             0, N_("Use Mingw-specific thread support") },
-
-
-/* Support the __declspec keyword by turning them into attributes.
-   We currently only support: dllimport and dllexport.
-   Note that the current way we do this may result in a collision with
-   predefined attributes later on.  This can be solved by using one attribute,
-   say __declspec__, and passing args to it.  The problem with that approach
-   is that args are not accumulated: each new appearance would clobber any
-   existing args.  */
-
-#undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-D_X86_=1 -Asystem=winnt"
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
 
-/* Normally, -lgcc is not needed since everything in it is in the DLL, but we
-   want to allow things to be added to it when installing new versions of
-   GCC without making a new CYGWIN.DLL, so we leave it.  Profiling is handled
-   by calling the init function from the prologue. */
-
-#undef LIBGCC_SPEC
-#define LIBGCC_SPEC "%{mno-cygwin: %{mthreads:-lmingwthrd} -lmingw32} -lgcc %{mno-cygwin:-lmoldname -lcrtdll}"
+#define TARGET_VERSION fprintf (stderr, " (x86 Cygwin)");
 
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC "%{shared|mdll: %{mno-cygwin:dllcrt1%O%s}} \
-  %{!shared: %{!mdll: %{!mno-cygwin:crt0%O%s} %{mno-cygwin:crt1%O%s} \
-  %{pg:gcrt0%O%s}}}"
+#define EXTRA_OS_CPP_BUILTINS()  /* Nothing.  */
 
 #undef CPP_SPEC
 #define CPP_SPEC "%(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
-  -D__stdcall=__attribute__((__stdcall__)) \
-  -D__cdecl=__attribute__((__cdecl__)) \
-  %{!ansi:-D_stdcall=__attribute__((__stdcall__)) \
-    -D_cdecl=__attribute__((__cdecl__))} \
-  -D__declspec(x)=__attribute__((x)) \
-  -D__i386__ -D__i386 \
-  %{!mno-cygwin:-D__CYGWIN32__ -D__CYGWIN__ -Dunix -D__unix -D__unix__} \
-  %{!mno-win32:-D_WIN32 -DWINNT -isystem /usr/include/w32api} \
-  %{mno-win32: %{mno-cygwin: %emno-cygwin and mno-win32 are not compatible}} \
-  %{mno-cygwin:-DWIN32 -D__WIN32__ -D_WIN32 -D__MINGW32__=0.2 \
-    %{mthreads:-D_MT} \
-    -isystem /usr/include/mingw32 \
-    -isystem /usr/include/mingw \
-    -iwithprefixbefore ../../../../mingw/include/g++-3 \
-    -iwithprefixbefore ../../../../mingw/include \
-    -iwithprefixbefore ../../../../mingw32/include/g++-3 \
-    -iwithprefixbefore ../../../../mingw32/include }"
-
-
-/* This macro defines names of additional specifications to put in the specs
-   that can be used in various specifications like CC1_SPEC.  Its definition
-   is an initializer with a subgrouping for each command option.
-
-   Each subgrouping contains a string constant, that defines the
-   specification name, and a string constant that used by the GNU CC driver
-   program.
-
-   Do not define this macro if it does not need to do anything.  */
-
-#undef  SUBTARGET_EXTRA_SPECS
-#define SUBTARGET_EXTRA_SPECS                                          \
-  { "mingw_include_path", DEFAULT_TARGET_MACHINE }
+  %{mno-win32:%{mno-cygwin: %emno-cygwin and mno-win32 are not compatible}} \
+  %{mno-cygwin:-D__MSVCRT__ -D__MINGW32__ %{!ansi:%{mthreads:-D_MT}}}\
+  %{!mno-cygwin:-D__CYGWIN32__ -D__CYGWIN__ %{!ansi:-Dunix} -D__unix__ -D__unix }\
+  %{mwin32|mno-cygwin:-DWIN32 -D_WIN32 -D__WIN32 -D__WIN32__ %{!ansi:-DWINNT}}\
+  %{!nostdinc:%{!mno-win32|mno-cygwin:-idirafter ../include/w32api%s -idirafter ../../include/w32api%s}}\
+"
+
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC "\
+  %{shared|mdll: %{mno-cygwin:dllcrt2%O%s}}\
+  %{!shared: %{!mdll: %{!mno-cygwin:crt0%O%s} %{mno-cygwin:crt2%O%s}\
+  %{pg:gcrt0%O%s}}}\
+  crtbegin.o%s"
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+  "%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}\
+   crtend.o%s"
+
+/* Normally, -lgcc is not needed since everything in it is in the DLL, but we
+   want to allow things to be added to it when installing new versions of
+   GCC without making a new CYGWIN.DLL, so we leave it.  Profiling is handled
+   by calling the init function from main.  */
+
+#ifdef ENABLE_SHARED_LIBGCC
+#define SHARED_LIBGCC_SPEC " \
+ %{static|static-libgcc:-lgcc -lgcc_eh} \
+ %{!static: \
+   %{!static-libgcc: \
+     %{!shared: \
+       %{!shared-libgcc:-lgcc -lgcc_eh} \
+       %{shared-libgcc:-lgcc_s -lgcc} \
+      } \
+     %{shared:-lgcc_s -lgcc} \
+    } \
+  } "
+#else
+#define SHARED_LIBGCC_SPEC " -lgcc "
+#endif
+
+#undef REAL_LIBGCC_SPEC
+#define REAL_LIBGCC_SPEC \
+  "%{mno-cygwin: %{mthreads:-lmingwthrd} -lmingw32} \
+   " SHARED_LIBGCC_SPEC " \
+   %{mno-cygwin:-lmoldname -lmingwex -lmsvcrt}"
 
 /* We have to dynamic link to get to the system DLLs.  All of libc, libm and
    the Unix stuff is in cygwin.dll.  The import library is called
@@ -127,449 +78,228 @@ Boston, MA 02111-1307, USA. */
    ld, but that doesn't work just yet.  */
 
 #undef LIB_SPEC
-#define LIB_SPEC "%{pg:-lgmon} \
+#define LIB_SPEC "\
+  %{pg:-lgmon} \
   %{!mno-cygwin:-lcygwin} \
   %{mno-cygwin:%{mthreads:-lmingwthrd} -lmingw32} \
   %{mwindows:-lgdi32 -lcomdlg32} \
   -luser32 -lkernel32 -ladvapi32 -lshell32"
 
-#define LINK_SPEC "%{mwindows:--subsystem windows} \
+/* To implement C++ function replacement we always wrap the cxx
+   malloc-like operators.  See N2800 #17.6.4.6 [replacement.functions] */
+#define CXX_WRAP_SPEC_LIST " \
+  --wrap _Znwj \
+  --wrap _Znaj \
+  --wrap _ZdlPv \
+  --wrap _ZdaPv \
+  --wrap _ZnwjRKSt9nothrow_t \
+  --wrap _ZnajRKSt9nothrow_t \
+  --wrap _ZdlPvRKSt9nothrow_t \
+  --wrap _ZdaPvRKSt9nothrow_t \
+"
+
+#if defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)
+
+#if USE_CYGWIN_LIBSTDCXX_WRAPPERS
+/* Default on, only explict -mno disables.  */
+#define CXX_WRAP_SPEC_OPT "!mno-use-libstdc-wrappers"
+#else
+/* Default off, only explict -m enables.  */
+#define CXX_WRAP_SPEC_OPT "muse-libstdc-wrappers"
+#endif
+
+#define CXX_WRAP_SPEC "%{!mno-cygwin:%{" CXX_WRAP_SPEC_OPT ":" CXX_WRAP_SPEC_LIST "}}"
+
+#else /* !defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)  */
+
+#define CXX_WRAP_SPEC ""
+
+#endif /* ?defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS) */
+
+#define LINK_SPEC "\
+  %{mwindows:--subsystem windows} \
   %{mconsole:--subsystem console} \
+  " CXX_WRAP_SPEC " \
   %{shared: %{mdll: %eshared and mdll are not compatible}} \
   %{shared: --shared} %{mdll:--dll} \
   %{static:-Bstatic} %{!static:-Bdynamic} \
-  %{shared|mdll: -e \
+  %{shared|mdll: --enable-auto-image-base -e \
     %{mno-cygwin:_DllMainCRTStartup@12} \
-    %{!mno-cygwin:__cygwin_dll_entry@12}}"
-
-#undef MATH_LIBRARY
-#define MATH_LIBRARY ""
-
-#define SIZE_TYPE "unsigned int"
-#define PTRDIFF_TYPE "int"
-#define WCHAR_UNSIGNED 1
-#define WCHAR_TYPE_SIZE 16
-#define WCHAR_TYPE "short unsigned int"
-
-\f
-/* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
-#define HANDLE_PRAGMA_PACK_PUSH_POP 1
-
-/* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
-   is a valid machine specific attribute for DECL.
-   The attributes in ATTRIBUTES have previously been assigned to DECL.  */
-
-union tree_node;
-#define TREE union tree_node *
-
-#undef VALID_MACHINE_DECL_ATTRIBUTE
-#define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \
-  i386_pe_valid_decl_attribute_p (DECL, ATTRIBUTES, IDENTIFIER, ARGS)
-extern int i386_pe_valid_decl_attribute_p PARAMS ((TREE, TREE, TREE, TREE));
-
-/* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS
-   is a valid machine specific attribute for TYPE.
-   The attributes in ATTRIBUTES have previously been assigned to TYPE.  */
-
-#undef VALID_MACHINE_TYPE_ATTRIBUTE
-#define VALID_MACHINE_TYPE_ATTRIBUTE(TYPE, ATTRIBUTES, IDENTIFIER, ARGS) \
-  i386_pe_valid_type_attribute_p (TYPE, ATTRIBUTES, IDENTIFIER, ARGS)
-extern int i386_pe_valid_type_attribute_p PARAMS ((TREE, TREE, TREE, TREE));
-
-extern union tree_node *i386_pe_merge_decl_attributes PARAMS ((TREE, TREE));
-#define MERGE_MACHINE_DECL_ATTRIBUTES(OLD, NEW) \
-  i386_pe_merge_decl_attributes ((OLD), (NEW))
-extern TREE i386_pe_merge_decl_attributes PARAMS ((TREE, TREE));
-
-/* Used to implement dllexport overriding dllimport semantics.  It's also used
-   to handle vtables - the first pass won't do anything because
-   DECL_CONTEXT (DECL) will be 0 so i386_pe_dll{ex,im}port_p will return 0.
-   It's also used to handle dllimport override semantics.  */
-#if 0
-#define REDO_SECTION_INFO_P(DECL) \
-  ((DECL_MACHINE_ATTRIBUTES (DECL) != NULL_TREE) \
-   || (TREE_CODE (DECL) == VAR_DECL && DECL_VIRTUAL_P (DECL)))
-#else
-#define REDO_SECTION_INFO_P(DECL) 1
+    %{!mno-cygwin:__cygwin_dll_entry@12}}\
+  %{!mno-cygwin:--dll-search-prefix=cyg -tsaware}"
+
+/* Allocate space for all of the machine-spec-specific stuff.
+   Allocate enough space for cygwin -> mingw32  munging plus
+   possible addition of "/mingw".  */
+
+#ifndef CYGWIN_MINGW_SUBDIR
+#define CYGWIN_MINGW_SUBDIR "/mingw"
+#endif
+#define CYGWIN_MINGW_SUBDIR_LEN (sizeof (CYGWIN_MINGW_SUBDIR) - 1)
+
+#ifdef GPLUSPLUS_INCLUDE_DIR
+char cygwin_gplusplus_include_dir[sizeof (GPLUSPLUS_INCLUDE_DIR) + 1
+                                 + (CYGWIN_MINGW_SUBDIR_LEN)]
+  = GPLUSPLUS_INCLUDE_DIR;
+#undef GPLUSPLUS_INCLUDE_DIR
+#define GPLUSPLUS_INCLUDE_DIR ((const char *) cygwin_gplusplus_include_dir)
+#ifndef GEN_CVT_ARRAY
+#define GEN_CVT_ARRAY
+#endif
 #endif
 
-\f
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_ctor, in_dtor, in_drectve
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS                                        \
-  CTOR_SECTION_FUNCTION                                                \
-  DTOR_SECTION_FUNCTION                                                \
-  DRECTVE_SECTION_FUNCTION                                     \
-  SWITCH_TO_SECTION_FUNCTION
-
-#define CTOR_SECTION_FUNCTION                                  \
-void                                                           \
-ctor_section ()                                                        \
-{                                                              \
-  if (in_section != in_ctor)                                   \
-    {                                                          \
-      fprintf (asm_out_file, "\t.section .ctor\n");            \
-      in_section = in_ctor;                                    \
-    }                                                          \
-}
-
-#define DTOR_SECTION_FUNCTION                                  \
-void                                                           \
-dtor_section ()                                                        \
-{                                                              \
-  if (in_section != in_dtor)                                   \
-    {                                                          \
-      fprintf (asm_out_file, "\t.section .dtor\n");            \
-      in_section = in_dtor;                                    \
-    }                                                          \
-}
-
-#define DRECTVE_SECTION_FUNCTION \
-void                                                                   \
-drectve_section ()                                                     \
-{                                                                      \
-  if (in_section != in_drectve)                                                \
-    {                                                                  \
-      fprintf (asm_out_file, "%s\n", "\t.section .drectve\n");         \
-      in_section = in_drectve;                                         \
-    }                                                                  \
-}
-
-/* Switch to SECTION (an `enum in_section').
-
-   ??? This facility should be provided by GCC proper.
-   The problem is that we want to temporarily switch sections in
-   ASM_DECLARE_OBJECT_NAME and then switch back to the original section
-   afterwards.  */
-#define SWITCH_TO_SECTION_FUNCTION                             \
-void                                                           \
-switch_to_section (section, decl)                              \
-     enum in_section section;                                  \
-     tree decl;                                                \
-{                                                              \
-  switch (section)                                             \
-    {                                                          \
-      case in_text: text_section (); break;                    \
-      case in_data: data_section (); break;                    \
-      case in_named: named_section (decl, NULL, 0); break;     \
-      case in_ctor: ctor_section (); break;                    \
-      case in_dtor: dtor_section (); break;                    \
-      case in_drectve: drectve_section (); break;              \
-      default: abort (); break;                                \
-    }                                                          \
-}
-
-#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)      \
-  do {                                         \
-    ctor_section ();                           \
-    fprintf (FILE, "%s\t", ASM_LONG);          \
-    assemble_name (FILE, NAME);                        \
-    fprintf (FILE, "\n");                      \
-  } while (0)
-
-#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)               \
-  do {                                         \
-    dtor_section ();                                   \
-    fprintf (FILE, "%s\t", ASM_LONG);          \
-    assemble_name (FILE, NAME);                        \
-    fprintf (FILE, "\n");                      \
-  } while (0)
-
-/* Don't allow flag_pic to propagate since gas may produce invalid code
-   otherwise. */
-
-#undef  SUBTARGET_OVERRIDE_OPTIONS
-#define SUBTARGET_OVERRIDE_OPTIONS                                     \
-do {                                                                   \
-  if (flag_pic)                                                                \
-    {                                                                  \
-      warning ("-f%s ignored for target (all code is position independent)",\
-              (flag_pic > 1) ? "PIC" : "pic");                         \
-      flag_pic = 0;                                                    \
-    }                                                                  \
-} while (0)                                                            \
-
-/* Define this macro if references to a symbol must be treated
-   differently depending on something about the variable or
-   function named by the symbol (such as what section it is in).
-
-   On i386 running Windows NT, modify the assembler name with a suffix 
-   consisting of an atsign (@) followed by string of digits that represents
-   the number of bytes of arguments passed to the function, if it has the 
-   attribute STDCALL.
-
-   In addition, we must mark dll symbols specially. Definitions of 
-   dllexport'd objects install some info in the .drectve section.  
-   References to dllimport'd objects are fetched indirectly via
-   _imp__.  If both are declared, dllexport overrides.  This is also 
-   needed to implement one-only vtables: they go into their own
-   section and we need to set DECL_SECTION_NAME so we do that here.
-   Note that we can be called twice on the same decl.  */
-
-extern void i386_pe_encode_section_info PARAMS ((TREE));
-
-#ifdef ENCODE_SECTION_INFO
-#undef ENCODE_SECTION_INFO
+#ifdef GPLUSPLUS_TOOL_INCLUDE_DIR
+char cygwin_gplusplus_tool_include_dir[sizeof (GPLUSPLUS_TOOL_INCLUDE_DIR) + 1
+                                      + CYGWIN_MINGW_SUBDIR_LEN]
+  = GPLUSPLUS_TOOL_INCLUDE_DIR;
+#undef GPLUSPLUS_TOOL_INCLUDE_DIR
+#define GPLUSPLUS_TOOL_INCLUDE_DIR ((const char *) cygwin_gplusplus_tool_include_dir)
+#ifndef GEN_CVT_ARRAY
+#define GEN_CVT_ARRAY
 #endif
-#define ENCODE_SECTION_INFO(DECL) i386_pe_encode_section_info (DECL)
-
-/* Utility used only in this file.  */
-#define I386_PE_STRIP_ENCODING(SYM_NAME) \
-  ((SYM_NAME) + ((SYM_NAME)[0] == '@' ? 3 : 0))
-
-/* This macro gets just the user-specified name
-   out of the string in a SYMBOL_REF.  Discard
-   trailing @[NUM] encoded by ENCODE_SECTION_INFO.  */
-#undef  STRIP_NAME_ENCODING
-#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)                           \
-do {                                                                   \
-  const char *_p;                                                      \
-  const char *_name = I386_PE_STRIP_ENCODING (SYMBOL_NAME);            \
-  for (_p = _name; *_p && *_p != '@'; ++_p)                            \
-    ;                                                                  \
-  if (*_p == '@')                                                      \
-    {                                                                  \
-      int _len = _p - _name;                                           \
-      char *_new_name = (char *) alloca (_len + 1);                    \
-      strncpy (_new_name, _name, _len);                                        \
-      _new_name[_len] = '\0';                                          \
-      (VAR) = _new_name;                                               \
-    }                                                                  \
-  else                                                                 \
-    (VAR) = _name;                                                     \
-} while (0)
-      
-\f
-/* Output a reference to a label.  */
-#undef ASM_OUTPUT_LABELREF
-#define ASM_OUTPUT_LABELREF(STREAM, NAME)              \
-  fprintf (STREAM, "%s%s", USER_LABEL_PREFIX,          \
-           I386_PE_STRIP_ENCODING (NAME))              \
-
-/* Output a common block.  */
-#undef ASM_OUTPUT_COMMON
-#define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
-do {                                                   \
-  if (i386_pe_dllexport_name_p (NAME))                 \
-    i386_pe_record_exported_symbol (NAME, 1);          \
-  if (! i386_pe_dllimport_name_p (NAME))               \
-    {                                                  \
-      fprintf ((STREAM), "\t.comm\t");                         \
-      assemble_name ((STREAM), (NAME));                        \
-      fprintf ((STREAM), ", %d\t%s %d\n",              \
-              (ROUNDED), ASM_COMMENT_START, (SIZE));   \
-    }                                                  \
-} while (0)
-
-/* Output the label for an initialized variable.  */
-#undef ASM_DECLARE_OBJECT_NAME
-#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)    \
-do {                                                   \
-  if (i386_pe_dllexport_name_p (NAME))                 \
-    i386_pe_record_exported_symbol (NAME, 1);          \
-  ASM_OUTPUT_LABEL ((STREAM), (NAME));                 \
-} while (0)
-
-\f
-/* Emit code to check the stack when allocating more that 4000
-   bytes in one go. */
-
-#define CHECK_STACK_LIMIT 4000
-
-/* By default, target has a 80387, uses IEEE compatible arithmetic,
-   and returns float values in the 387 and needs stack probes */
-#undef TARGET_DEFAULT
-
-#define TARGET_DEFAULT \
-   (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE) 
-
-/* This is how to output an assembler line
-   that says to advance the location counter
-   to a multiple of 2**LOG bytes.  */
-
-#undef ASM_OUTPUT_ALIGN
-#define ASM_OUTPUT_ALIGN(FILE,LOG)     \
-    if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
-
-/* Define this macro if in some cases global symbols from one translation
-   unit may not be bound to undefined symbols in another translation unit
-   without user intervention.  For instance, under Microsoft Windows
-   symbols must be explicitly imported from shared libraries (DLLs).  */
-#define MULTIPLE_SYMBOL_SPACES
-
-#define UNIQUE_SECTION_P(DECL) DECL_ONE_ONLY (DECL)
-extern void i386_pe_unique_section PARAMS ((TREE, int));
-#define UNIQUE_SECTION(DECL,RELOC) i386_pe_unique_section (DECL, RELOC)
-
-#define SUPPORTS_ONE_ONLY 1
-
-/* A C statement to output something to the assembler file to switch to section
-   NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
-   NULL_TREE.  Some target formats do not support arbitrary sections.  Do not
-   define this macro in such cases.  */
-#undef ASM_OUTPUT_SECTION_NAME
-#define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC)             \
-do {                                                                   \
-  static struct section_info                                           \
-    {                                                                  \
-      struct section_info *next;                                       \
-      char *name;                                                      \
-      enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type;               \
-    } *sections;                                                       \
-  struct section_info *s;                                              \
-  const char *mode;                                                    \
-  enum sect_enum type;                                                 \
-                                                                       \
-  for (s = sections; s; s = s->next)                                   \
-    if (!strcmp (NAME, s->name))                                       \
-      break;                                                           \
-                                                                       \
-  if (DECL && TREE_CODE (DECL) == FUNCTION_DECL)                       \
-    type = SECT_EXEC, mode = "x";                                      \
-  else if (DECL && DECL_READONLY_SECTION (DECL, RELOC))                        \
-    type = SECT_RO, mode = "";                                         \
-  else                                                                 \
-    {                                                                  \
-      type = SECT_RW;                                                  \
-      if (TREE_CODE (DECL) == VAR_DECL                                 \
-          && lookup_attribute ("shared", DECL_MACHINE_ATTRIBUTES (DECL))) \
-        mode = "ws";                                                   \
-      else                                                             \
-        mode = "w";                                                    \
-    }                                                                  \
-                                                                       \
-  if (s == 0)                                                          \
-    {                                                                  \
-      s = (struct section_info *) xmalloc (sizeof (struct section_info)); \
-      s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME));                \
-      strcpy (s->name, NAME);                                          \
-      s->type = type;                                                  \
-      s->next = sections;                                              \
-      sections = s;                                                    \
-      fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);           \
-      /* Functions may have been compiled at various levels of         \
-         optimization so we can't use `same_size' here.  Instead,      \
-         have the linker pick one.  */                                 \
-      if ((DECL) && DECL_ONE_ONLY (DECL))                              \
-        fprintf (STREAM, "\t.linkonce %s\n",                           \
-                TREE_CODE (DECL) == FUNCTION_DECL                      \
-                ? "discard" : "same_size");                            \
-    }                                                                  \
-  else                                                                 \
-    {                                                                  \
-      fprintf (STREAM, ".section\t%s,\"%s\"\n", NAME, mode);           \
-    }                                                                  \
-} while (0)
-
-/* Write the extra assembler code needed to declare a function
-   properly.  If we are generating SDB debugging information, this
-   will happen automatically, so we only need to handle other cases.  */
-#undef ASM_DECLARE_FUNCTION_NAME
-#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)                    \
-  do                                                                   \
-    {                                                                  \
-      if (i386_pe_dllexport_name_p (NAME))                             \
-       i386_pe_record_exported_symbol (NAME, 0);                       \
-      if (write_symbols != SDB_DEBUG)                                  \
-       i386_pe_declare_function_type (FILE, NAME, TREE_PUBLIC (DECL)); \
-      ASM_OUTPUT_LABEL (FILE, NAME);                                   \
-    }                                                                  \
-  while (0)
-
-/* Add an external function to the list of functions to be declared at
-   the end of the file.  */
-#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                          \
-  do                                                                   \
-    {                                                                  \
-      if (TREE_CODE (DECL) == FUNCTION_DECL)                           \
-       i386_pe_record_external_function (NAME);                        \
-    }                                                                  \
-  while (0)
-
-/* Declare the type properly for any external libcall.  */
-#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN) \
-  i386_pe_declare_function_type (FILE, XSTR (FUN, 0), 1)
-
-/* This says out to put a global symbol in the BSS section. */
-#undef ASM_OUTPUT_ALIGNED_BSS
-#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
-  asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
-
-/* Output function declarations at the end of the file.  */
-#undef ASM_FILE_END
-#define ASM_FILE_END(FILE) \
-  i386_pe_asm_file_end (FILE)
-
-#undef ASM_COMMENT_START
-#define ASM_COMMENT_START " #"
-
-/* DWARF2 Unwinding doesn't work with exception handling yet. */
-#define DWARF2_UNWIND_INFO 0
-
-/* Don't assume anything about the header files. */
-#define NO_IMPLICIT_EXTERN_C
-
-#define SUBTARGET_PROLOGUE                                             \
-  if (profile_flag                                                     \
-      && MAIN_NAME_P (DECL_NAME (current_function_decl)))              \
-     {                                                                 \
-      emit_call_insn (gen_rtx (CALL, VOIDmode,                                 \
-        gen_rtx_MEM (FUNCTION_MODE,                                    \
-                    gen_rtx_SYMBOL_REF (Pmode, "_monstartup")),        \
-       const0_rtx));                                                   \
-     }
-
-/* External function declarations.  */
-
-#ifndef PARAMS
-#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
-#define PARAMS(ARGS) ARGS
-#else
-#define PARAMS(ARGS) ()
+#endif
+
+#ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
+char cygwin_gplusplus_backward_include_dir[sizeof (GPLUSPLUS_BACKWARD_INCLUDE_DIR)  + 1
+                                          + CYGWIN_MINGW_SUBDIR_LEN]
+  = GPLUSPLUS_BACKWARD_INCLUDE_DIR;
+#undef GPLUSPLUS_BACKWARD_INCLUDE_DIR
+#define GPLUSPLUS_BACKWARD_INCLUDE_DIR ((const char *) cygwin_gplusplus_backward_include_dir)
+#ifndef GEN_CVT_ARRAY
+#define GEN_CVT_ARRAY
 #endif
 #endif
 
-extern void i386_pe_record_external_function PARAMS ((char *));
-/* extern void i386_pe_declare_function_type PARAMS ((FILE *, char *, int)); */
-extern void i386_pe_record_exported_symbol PARAMS ((char *, int));
-/* extern void i386_pe_asm_file_end PARAMS ((FILE *)); */
+#ifdef LOCAL_INCLUDE_DIR
+char cygwin_local_include_dir[sizeof (LOCAL_INCLUDE_DIR)  + 1
+                             + CYGWIN_MINGW_SUBDIR_LEN]
+  = LOCAL_INCLUDE_DIR;
+#undef LOCAL_INCLUDE_DIR
+#define LOCAL_INCLUDE_DIR ((const char *) cygwin_local_include_dir)
+#ifndef GEN_CVT_ARRAY
+#define GEN_CVT_ARRAY
+#endif
+#endif
 
-/* For Win32 ABI compatibility */
-#undef DEFAULT_PCC_STRUCT_RETURN
-#define DEFAULT_PCC_STRUCT_RETURN 0
+#ifdef CROSS_INCLUDE_DIR
+char cygwin_cross_include_dir[sizeof (CROSS_INCLUDE_DIR) + 1
+                             + CYGWIN_MINGW_SUBDIR_LEN]
+  = CROSS_INCLUDE_DIR;
+#undef CROSS_INCLUDE_DIR
+#define CROSS_INCLUDE_DIR ((const char *) cygwin_cross_include_dir)
+#ifndef GEN_CVT_ARRAY
+#define GEN_CVT_ARRAY
+#endif
+#endif
 
-/* No data type wants to be aligned rounder than this.  */
-#undef BIGGEST_ALIGNMENT
-#define BIGGEST_ALIGNMENT 128
+#ifdef TOOL_INCLUDE_DIR
+char cygwin_tool_include_dir[sizeof (TOOL_INCLUDE_DIR) + 1
+                            + CYGWIN_MINGW_SUBDIR_LEN]
+  = TOOL_INCLUDE_DIR;
+#undef TOOL_INCLUDE_DIR
+#define TOOL_INCLUDE_DIR ((const char *) cygwin_tool_include_dir)
 
-/* A bitfield declared as `int' forces `int' alignment for the struct.  */
-#undef PCC_BITFIELDS_TYPE_MATTERS
-#define PCC_BITFIELDS_TYPE_MATTERS 1
-#define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
+#ifndef CROSS_DIRECTORY_STRUCTURE
+#undef STANDARD_INCLUDE_DIR
+#define STANDARD_INCLUDE_DIR "/usr/include"
+char cygwin_standard_include_dir[sizeof (STANDARD_INCLUDE_DIR) + 1
+                                + CYGWIN_MINGW_SUBDIR_LEN]
+  = STANDARD_INCLUDE_DIR;
+#undef STANDARD_INCLUDE_DIR
+#define STANDARD_INCLUDE_DIR ((const char *) cygwin_standard_include_dir)
+#endif
 
+#ifndef GEN_CVT_ARRAY
+#define GEN_CVT_ARRAY
+#endif
+#endif
 
-/* Enable alias attribute support.  */
-#ifndef SET_ASM_OP
-#define SET_ASM_OP "\t.set\t"
+#ifndef GEN_CVT_ARRAY
+extern char *cvt_to_mingw[];
+#else
+char *cvt_to_mingw[] =
+  {
+#ifdef GPLUSPLUS_INCLUDE_DIR
+    cygwin_gplusplus_include_dir,
 #endif
 
-#ifndef INT_ASM_OP
-#define INT_ASM_OP "\t.long\t"
+#ifdef GPLUSPLUS_TOOL_INCLUDE_DIR
+    cygwin_gplusplus_tool_include_dir,
 #endif
 
-#undef STANDARD_INCLUDE_DIR
-#define STANDARD_INCLUDE_DIR "/usr/include"
+#ifdef GPLUSPLUS_BACKWARD_INCLUDE_DIR
+    cygwin_gplusplus_backward_include_dir,
+#endif
+
+#ifdef LOCAL_INCLUDE_DIR
+    cygwin_local_include_dir,
+#endif
+
+#ifdef CROSS_INCLUDE_DIR
+    cygwin_cross_include_dir,
+#endif
+
+#ifdef TOOL_INCLUDE_DIR
+    cygwin_tool_include_dir,
+#endif
 
-#undef MD_STARTFILE_PREFIX
-#define MD_STARTFILE_PREFIX     "/usr/lib/"
+#ifdef STANDARD_INCLUDE_DIR
+    cygwin_standard_include_dir,
+#endif
+
+    NULL
+  };
+#undef GEN_CVT_ARRAY
+#endif /*GEN_CVT_ARRAY*/
+
+void mingw_scan (int, const char * const *, const char **);
+#if 1
+#define GCC_DRIVER_HOST_INITIALIZATION \
+do \
+{ \
+  mingw_scan(argc, (const char * const *) argv, &spec_machine); \
+  } \
+while (0)
+#else
+#define GCC_DRIVER_HOST_INITIALIZATION \
+do \
+{ \
+  char *cprefix = concat (tooldir_base_prefix, spec_machine, \
+                         dir_separator_str, NULL); \
+  if (!IS_ABSOLUTE_PATH (cprefix)) \
+    cprefix = concat (standard_exec_prefix, spec_machine, dir_separator_str, \
+                     spec_version, dir_separator_str, tooldir_prefix, NULL); \
+  add_prefix (&exec_prefixes,\
+             concat (cprefix, "../../../../", spec_machine, "/bin/", NULL), \
+             "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); \
+  add_prefix (&exec_prefixes, cprefix, \
+             "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); \
+  add_prefix (&startfile_prefixes,\
+             concat (standard_startfile_prefix, "w32api", NULL),\
+             "GCC", PREFIX_PRIORITY_LAST, 0, NULL);\
+  mingw_scan(argc, (const char * const *) argv, &spec_machine); \
+  } \
+while (0)
+#endif
 
-#undef STANDARD_STARTFILE_PREFIX
-#define STANDARD_STARTFILE_PREFIX     "/usr/lib/mingw/"
+/* Binutils does not handle weak symbols from dlls correctly.  For now,
+   do not use them unnecessarily in gthr-posix.h.  */
+#define GTHREAD_USE_WEAK 0
 
-#undef TREE
+/* Every program on cygwin links against cygwin1.dll which contains 
+   the pthread routines.  There is no need to explicitly link them
+   and the -pthread flag is not recognized.  */
+#undef GOMP_SELF_SPECS
+#define GOMP_SELF_SPECS ""
 
-#ifndef BUFSIZ
-# undef FILE
+/* This matches SHLIB_SONAME and SHLIB_SOVERSION in t-cygwin. */
+#if DWARF2_UNWIND_INFO
+#define LIBGCC_EH_EXTN ""
+#else
+#define LIBGCC_EH_EXTN "-sjlj"
 #endif
+#define LIBGCC_SONAME "cyggcc_s" LIBGCC_EH_EXTN "-1.dll"
+
+/* We should find a way to not have to update this manually.  */
+#define LIBGCJ_SONAME "cyggcj" /*LIBGCC_EH_EXTN*/ "-11.dll"
+