mcore-pe.h

俄罗斯高人Mamaich的Pocket gcc编译器（运行在PocketPC上）的全部源代码。

/* Definitions of target machine for GNU compiler, for MCore using COFF/PE.
   Copyright (C) 1994, 1999, 2000, 2002 Free Software Foundation, Inc.
   Contributed by Michael Tiemann ([e-mail]).

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.  */

/* Run-time Target Specification.  */
#define TARGET_VERSION fputs (" (MCORE/pe)", stderr)

#define SUBTARGET_CPP_PREDEFINES " -D__pe__"

/* The MCore ABI says that bitfields are unsigned by default.  */
/* The EPOC C++ environment does not support exceptions.  */
#define CC1_SPEC "-funsigned-bitfields %{!DIN_GCC:-fno-rtti} %{!DIN_GCC:-fno-exceptions}"

#include "svr3.h"
#include "mcore/mcore.h"
#include "dbxcoff.h"

#undef  SDB_DEBUGGING_INFO
#define DBX_DEBUGGING_INFO 1

/* Computed in toplev.c.  */
#undef  PREFERRED_DEBUGGING_TYPE

/* Lay out additional 'sections' where we place things like code
   and readonly data. This gets them out of default places.  */

#define SUBTARGET_SWITCH_SECTIONS 		\
  case in_drectve: drectve_section (); break;

#define DRECTVE_SECTION_ASM_OP	"\t.section .drectve"
#define READONLY_DATA_SECTION_ASM_OP	"\t.section .rdata"

#define SUBTARGET_EXTRA_SECTIONS in_drectve

#define SUBTARGET_EXTRA_SECTION_FUNCTIONS \
  DRECTVE_SECTION_FUNCTION

#define DRECTVE_SECTION_FUNCTION 				\
void								\
drectve_section ()						\
{								\
  if (in_section != in_drectve)					\
    {								\
      fprintf (asm_out_file, "%s\n", DRECTVE_SECTION_ASM_OP);	\
      in_section = in_drectve;					\
    }								\
}

#define MCORE_EXPORT_NAME(STREAM, NAME)			\
  do							\
    {							\
      drectve_section ();				\
      fprintf (STREAM, "\t.ascii \" -export:%s\"\n",	\
	       (* targetm.strip_name_encoding) (NAME));	\
    }							\
  while (0);

/* Output the label for an initialized variable.  */
#undef  ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL)		\
  do								\
    {								\
      if (mcore_dllexport_name_p (NAME))			\
        {							\
          enum in_section save_section = in_section;		\
	  MCORE_EXPORT_NAME (STREAM, NAME);			\
          switch_to_section (save_section, (DECL));		\
        }							\
      ASM_OUTPUT_LABEL ((STREAM), (NAME));			\
    }								\
  while (0)

/* Output a function label definition.  */
#define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL)		\
  do								\
    {								\
      if (mcore_dllexport_name_p (NAME))			\
	{							\
          MCORE_EXPORT_NAME (STREAM, NAME);			\
	  function_section (DECL);				\
	}							\
      ASM_OUTPUT_LABEL ((STREAM), (NAME));			\
    }								\
  while (0);

#undef  ASM_FILE_START
#define ASM_FILE_START(STREAM)					\
  do								\
    {								\
      fprintf (STREAM, "%s Generated by gcc %s for MCore/pe\n",	\
	   ASM_COMMENT_START, version_string);			\
      output_file_directive ((STREAM), main_input_filename);	\
    }								\
  while (0)

#undef  ASM_OUTPUT_SOURCE_LINE
#define ASM_OUTPUT_SOURCE_LINE(FILE, LINE)				  \
  {									  \
    if (write_symbols == DBX_DEBUG)					  \
      {									  \
        static int sym_lineno = 1;					  \
        char buffer[256];						  \
									  \
        ASM_GENERATE_INTERNAL_LABEL (buffer, "LM", sym_lineno);		  \
        fprintf (FILE, ".stabn 68,0,%d,", LINE);			  \
        assemble_name (FILE, buffer);					  \
        putc ('-', FILE);						  \
        assemble_name (FILE,						  \
		   XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
        putc ('\n', FILE);						  \
        ASM_OUTPUT_INTERNAL_LABEL (FILE, "LM", sym_lineno);		  \
        sym_lineno ++;							  \
      }									  \
  }

#define STARTFILE_SPEC "crt0.o%s"
#define ENDFILE_SPEC  "%{!mno-lsim:-lsim}"

/* __CTOR_LIST__ and __DTOR_LIST__ must be defined by the linker script.  */
#define CTOR_LISTS_DEFINED_EXTERNALLY

#undef DO_GLOBAL_CTORS_BODY
#undef DO_GLOBAL_DTORS_BODY
#undef INIT_SECTION_ASM_OP
#undef DTORS_SECTION_ASM_OP

#define SUPPORTS_ONE_ONLY 1

/* Switch into a generic section.  */
#undef TARGET_ASM_NAMED_SECTION
#define TARGET_ASM_NAMED_SECTION  default_pe_asm_named_section