2003-03-21 Christopher Faylor <cgf@redhat.com>

	* config.gcc (i[34567]86-*-cygwin*): Use new common makefile
	stub t-cygming. Use common target header cygming.h. Add extra
	c_target_obj and cxx_target_obj file. Default cygwin to posix
	threading. Enforce i386 as float format.
	(i[34567]86-*-mingw*): Use new common makefile stub t-cygming.
	Remove cygwin.h as target header. Use common target header
	cygming.h  Enforce i386 as float format. Correct typo.
	* config/i386/cygming.h: New file, containing definitions
	common to mingw32 and cygwin.
	* config/i386/cygwin.h: Remove definitions common to cygwin and
	mingw.	Simplify special spec logic.  Define "wrappers" around
	certain include path defines to accommodate -mno-cygwin.
	Remove some #if 0'ed code.
	(STANDARD_INCLUDE_DIR) Always define when not cross-compiling.
	(LINK_SPEC): Don't use cyg search prefix when -mno-cygwin.
	(GCC_DRIVER_HOST_INITIALIZATION): Define as call to mingw_scan.
	* config/i386/mingw32.h: Remove definitions common to cygwin and
	mingw.
	(EXTRA_OS_CPP_BUILTINS): Adjust.
	(TARGET_VERSION): Define.
	* config/i386/crtdll.h (EXTRA_OS_CPP_BUILTINS): Override
	mingw32.h definitions.
	(LIBGCC_SPEC): Add libmingwex.a as in mingw32.h.
	* config/i386/t-cygwin (EXTRA_GCC_OBJS): Define as cygwin1.o.
	Add compilation rules for cygwin1.o cygwin2.o.
	* config/i386/cygwin1.c: New file.
	* config/i386/cygwin2.c: New file.
	* config/i386/t-cygming: New makefile stub.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@64643 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 370 insertions, 0 deletions

diff --git a/gcc/config/i386/cygming.h b/gcc/config/i386/cygming.h
new file mode 100644
index 00000000000..030e19a0fd3
--- /dev/null
+++ b/gcc/config/i386/cygming.h
@@ -0,0 +1,370 @@
+/* Operating system specific defines to be used when targeting GCC for
+   hosting on Windows32, using a Unix style C library and tools.
+   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
+   Free Software Foundation, Inc.
+
+This file is part of GNU CC.
+
+GNU CC 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)
+any later version.
+
+GNU CC 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 DBX_DEBUGGING_INFO 1
+#define SDB_DEBUGGING_INFO 1
+#undef PREFERRED_DEBUGGING_TYPE
+#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
+
+#define TARGET_EXECUTABLE_SUFFIX ".exe"
+
+#include <stdio.h>
+
+/* Masks for subtarget switches used by other files.  */
+#define MASK_NOP_FUN_DLLIMPORT 0x08000000 /* Ignore dllimport for functions */
+
+/* Used in winnt.c.  */
+#define TARGET_NOP_FUN_DLLIMPORT (target_flags & MASK_NOP_FUN_DLLIMPORT)
+
+#undef  SUBTARGET_SWITCHES
+#define SUBTARGET_SWITCHES \
+{ "cygwin",		  0, N_("Use the Cygwin interface") },	\
+{ "no-cygwin",		  0, N_("Use the Mingw32 interface") },	\
+{ "windows",		  0, N_("Create GUI application") },	\
+{ "no-win32",		  0, N_("Don't set Windows defines") },	\
+{ "win32",		  0, N_("Set Windows defines") },	\
+{ "console",		  0, N_("Create console application") },\
+{ "dll",		  0, 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") },
+
+#define MAYBE_UWIN_CPP_BUILTINS() /* Nothing.  */
+
+/* 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.  */
+
+#define TARGET_OS_CPP_BUILTINS()					\
+  do									\
+    {									\
+	builtin_define ("_X86_=1");					\
+	builtin_assert ("system=winnt");				\
+	builtin_define ("__stdcall=__attribute__((__stdcall__))");	\
+	builtin_define ("__fastcall=__attribute__((__fastcall__))");	\
+	builtin_define ("__cdecl=__attribute__((__cdecl__))");		\
+	builtin_define ("__declspec(x)=__attribute__((x))");		\
+	if (!flag_iso)							\
+	  {								\
+	    builtin_define ("_stdcall=__attribute__((__stdcall__))");	\
+	    builtin_define ("_fastcall=__attribute__((__fastcall__))");	\
+	    builtin_define ("_cdecl=__attribute__((__cdecl__))");	\
+	  }								\
+	MAYBE_UWIN_CPP_BUILTINS ();					\
+	EXTRA_OS_CPP_BUILTINS ();					\
+  }									\
+  while (0)
+
+/* Get tree.c to declare a target-specific specialization of
+   merge_decl_attributes.  */
+#define TARGET_DLLIMPORT_DECL_ATTRIBUTES
+
+/* 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 }
+
+#undef MATH_LIBRARY
+#define MATH_LIBRARY ""
+
+#define SIZE_TYPE "unsigned int"
+#define PTRDIFF_TYPE "int"
+#define WCHAR_TYPE_SIZE 16
+#define WCHAR_TYPE "short unsigned int"
+
+
+/* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop).  */
+#define HANDLE_PRAGMA_PACK_PUSH_POP 1
+
+union tree_node;
+#define TREE union tree_node *
+
+#undef EXTRA_SECTIONS
+#define EXTRA_SECTIONS in_drectve
+
+#undef EXTRA_SECTION_FUNCTIONS
+#define EXTRA_SECTION_FUNCTIONS					\
+  DRECTVE_SECTION_FUNCTION					\
+  SWITCH_TO_SECTION_FUNCTION
+
+#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;						\
+    }									\
+}
+void drectve_section PARAMS ((void));
+
+/* 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 PARAMS ((enum in_section, tree));        \
+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_drectve: drectve_section (); break; 		\
+      default: abort (); break; 				\
+    } 								\
+}
+
+/* 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.  */
+
+#undef TARGET_ENCODE_SECTION_INFO
+#define TARGET_ENCODE_SECTION_INFO  i386_pe_encode_section_info
+#undef  TARGET_STRIP_NAME_ENCODING
+#define TARGET_STRIP_NAME_ENCODING  i386_pe_strip_name_encoding_full
+
+/* Output a reference to a label.  */
+#undef ASM_OUTPUT_LABELREF
+#define ASM_OUTPUT_LABELREF  i386_pe_output_labelref
+
+/* 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)
+
+
+/* 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,
+   returns float values in the 387 and needs stack probes.
+   We also align doubles to 64-bits for MSVC default compatibility. */
+
+#undef TARGET_SUBTARGET_DEFAULT
+#define TARGET_SUBTARGET_DEFAULT \
+   (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE \
+    | MASK_ALIGN_DOUBLE)
+
+/* 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
+
+extern void i386_pe_unique_section PARAMS ((TREE, int));
+#define TARGET_ASM_UNIQUE_SECTION i386_pe_unique_section
+
+#define SUPPORTS_ONE_ONLY 1
+
+/* Switch into a generic section.  */
+#define TARGET_ASM_NAMED_SECTION  i386_pe_asm_named_section
+
+/* Select attributes for named sections.  */
+#define TARGET_SECTION_TYPE_FLAGS  i386_pe_section_type_flags
+
+/* 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.  To make
+   it work, we need to build a libgcc_s.dll, and dcrt0.o should be
+   changed to call __register_frame_info/__deregister_frame_info.  */
+#define DWARF2_UNWIND_INFO 0
+
+/* Don't assume anything about the header files.  */
+#define NO_IMPLICIT_EXTERN_C
+
+#undef PROFILE_HOOK
+#define PROFILE_HOOK(LABEL)						\
+  if (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));							\
+    }
+
+/* Java Native Interface (JNI) methods on Win32 are invoked using the
+   stdcall calling convention.  */
+#undef MODIFY_JNI_METHOD_CALL
+#define MODIFY_JNI_METHOD_CALL(MDECL)					      \
+  build_type_attribute_variant ((MDECL),				      \
+			       build_tree_list (get_identifier ("stdcall"),   \
+						NULL))
+
+/* External function declarations.  */
+
+extern void i386_pe_record_external_function PARAMS ((const char *));
+extern void i386_pe_declare_function_type PARAMS ((FILE *, const char *, int));
+extern void i386_pe_record_exported_symbol PARAMS ((const char *, int));
+extern void i386_pe_asm_file_end PARAMS ((FILE *));
+extern int i386_pe_dllexport_name_p PARAMS ((const char *));
+extern int i386_pe_dllimport_name_p PARAMS ((const char *));
+
+/* For Win32 ABI compatibility */
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 0
+
+/* MSVC returns aggregate types of up to 8 bytes via registers.
+   See i386.c:ix86_return_in_memory.  */
+#undef MS_AGGREGATE_RETURN
+#define MS_AGGREGATE_RETURN 1
+
+/* No data type wants to be aligned rounder than this.  */
+#undef	BIGGEST_ALIGNMENT
+#define BIGGEST_ALIGNMENT 128
+
+/* Native complier aligns internal doubles in structures on dword boundaries.  */
+#undef	BIGGEST_FIELD_ALIGNMENT
+#define BIGGEST_FIELD_ALIGNMENT 64
+
+/* A bit-field declared as `int' forces `int' alignment for the struct.  */
+#undef PCC_BITFIELD_TYPE_MATTERS
+#define PCC_BITFIELD_TYPE_MATTERS 1
+#define GROUP_BITFIELDS_BY_ALIGN TYPE_NATIVE(rec)
+
+/* Enable alias attribute support.  */
+#ifndef SET_ASM_OP
+#define SET_ASM_OP "\t.set\t"
+#endif
+
+#undef TREE
+
+#ifndef BUFSIZ
+# undef FILE
+#endif