gcc/config/i386/vxworks.h

/* IA32 VxWorks target definitions for GNU compiler.
   Copyright (C) 2003-2015 Free Software Foundation, Inc.
   Updated by CodeSourcery, LLC.

This file is part of GCC.

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 3, or (at your option)
any later version.

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 GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#undef  ASM_SPEC
#define ASM_SPEC ""

#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
  asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)

/* VxWorks uses the same ABI as Solaris 2, so use i386/sol2.h version.  */

#undef TARGET_SUBTARGET_DEFAULT
#define TARGET_SUBTARGET_DEFAULT \
	(MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_VECT8_RETURNS)

/* Provide our target specific DBX_REGISTER_NUMBER.  VxWorks relies on
   the SVR4 numbering.  */

#undef DBX_REGISTER_NUMBER
#define DBX_REGISTER_NUMBER(n)  svr4_dbx_register_map[n]

#define TARGET_OS_CPP_BUILTINS()			\
  do							\
    {							\
      VXWORKS_OS_CPP_BUILTINS ();			\
      if (TARGET_386)					\
        builtin_define ("CPU=I80386");			\
      else if (TARGET_486)				\
        builtin_define ("CPU=I80486");			\
      else if (TARGET_PENTIUM)				\
        {						\
          builtin_define ("CPU=PENTIUM");		\
          builtin_define ("CPU_VARIANT=PENTIUM");	\
        }						\
      else if (TARGET_PENTIUMPRO)			\
        {						\
          builtin_define ("CPU=PENTIUM2");		\
          builtin_define ("CPU_VARIANT=PENTIUMPRO");	\
        }						\
      else if (TARGET_PENTIUM4)				\
        {						\
          builtin_define ("CPU=PENTIUM4");		\
          builtin_define ("CPU_VARIANT=PENTIUM4");	\
        }						\
    }							\
  while (0)

#undef  CPP_SPEC
#define CPP_SPEC VXWORKS_ADDITIONAL_CPP_SPEC
#undef  LIB_SPEC
#define LIB_SPEC VXWORKS_LIB_SPEC
#undef  STARTFILE_SPEC
#define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
#undef  ENDFILE_SPEC
#define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
#undef  LINK_SPEC
#define LINK_SPEC VXWORKS_LINK_SPEC

#undef  SUBTARGET_SWITCHES
#define SUBTARGET_SWITCHES EXTRA_SUBTARGET_SWITCHES

#undef SUBTARGET_OVERRIDE_OPTIONS
#define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS

/* No _mcount profiling on VxWorks.  */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE,LABELNO) VXWORKS_FUNCTION_PROFILER(FILE,LABELNO)

/* We cannot use PC-relative accesses for VxWorks PIC because there is no
   fixed gap between segments.  */
#undef ASM_PREFERRED_EH_DATA_FORMAT

#define IX86_MAYBE_NO_LIBGCC_TFMODE