Subversion Repositories openrisc_2011-10-31

/* Definitions for Intel 386 running FreeBSD with ELF format

   Copyright (C) 1996, 2000, 2002, 2004, 2007 Free Software Foundation, Inc.

   Contributed by Eric Youngdale.

   Modified for stabs-in-ELF by H.J. Lu.

   Adapted from GNU/Linux version by John Polstra.

   Continued development by David O'Brien <obrien@freebsd.org>

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/>.  */

#define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");

/* Override the default comment-starter of "/".  */

#undef  ASM_COMMENT_START

#define ASM_COMMENT_START "#"

#undef  ASM_APP_ON

#define ASM_APP_ON "#APP\n"

#undef  ASM_APP_OFF

#define ASM_APP_OFF "#NO_APP\n"

#undef  DBX_REGISTER_NUMBER

#define DBX_REGISTER_NUMBER(n) \

  (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])

#undef  NO_PROFILE_COUNTERS

#define NO_PROFILE_COUNTERS     1

/* Tell final.c that we don't need a label passed to mcount.  */

#undef  MCOUNT_NAME

#define MCOUNT_NAME ".mcount"

/* Make gcc agree with <machine/ansi.h>.  */

#undef  SIZE_TYPE

#define SIZE_TYPE       (TARGET_64BIT ? "long unsigned int" : "unsigned int")

#undef  PTRDIFF_TYPE

#define PTRDIFF_TYPE    (TARGET_64BIT ? "long int" : "int")

#undef  WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD)

#undef  SUBTARGET_EXTRA_SPECS   /* i386.h bogusly defines it.  */

#define SUBTARGET_EXTRA_SPECS \

  { "fbsd_dynamic_linker", FBSD_DYNAMIC_LINKER }

/* Provide a STARTFILE_SPEC appropriate for FreeBSD.  Here we add

   the magical crtbegin.o file (see crtstuff.c) which provides part

        of the support for getting C++ file-scope static object constructed

        before entering `main'.  */

#undef  STARTFILE_SPEC

#define STARTFILE_SPEC \

  "%{!shared: \

     %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \

                       %{!p:%{profile:gcrt1.o%s} \

                         %{!profile:crt1.o%s}}}} \

   crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"

/* Provide a ENDFILE_SPEC appropriate for FreeBSD.  Here we tack on

   the magical crtend.o file (see crtstuff.c) which provides part of

        the support for getting C++ file-scope static object constructed

        before entering `main', followed by a normal "finalizer" file,

        `crtn.o'.  */

#undef  ENDFILE_SPEC

#define ENDFILE_SPEC \

  "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"

/* Provide a LINK_SPEC appropriate for FreeBSD.  Here we provide support

   for the special GCC options -static and -shared, which allow us to

   link things in one of these three modes by applying the appropriate

   combinations of options at link-time. We like to support here for

   as many of the other GNU linker options as possible. But I don't

   have the time to search for those flags. I am sure how to add

   support for -soname shared_object_name. H.J.

   I took out %{v:%{!V:-V}}. It is too much :-(. They can use

   -Wl,-V.

   When the -shared link option is used a final link is not being

   done.  */

#undef  LINK_SPEC

#define LINK_SPEC "\

  %{p:%nconsider using `-pg' instead of `-p' with gprof(1)} \

  %{v:-V} \

  %{assert*} %{R*} %{rpath*} %{defsym*} \

  %{shared:-Bshareable %{h*} %{soname*}} \

    %{!shared: \

      %{!static: \

        %{rdynamic:-export-dynamic} \

        %{!dynamic-linker:-dynamic-linker %(fbsd_dynamic_linker) }} \

    %{static:-Bstatic}} \

  %{symbolic:-Bsymbolic}"

/* A C statement to output to the stdio stream FILE an assembler

   command to advance the location counter to a multiple of 1<<LOG

   bytes if it is within MAX_SKIP bytes.

   This is used to align code labels according to Intel recommendations.  */

#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN

#undef  ASM_OUTPUT_MAX_SKIP_ALIGN

#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP)                                  \

  if ((LOG) != 0) {                                                                                                             \

    if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG));    \

    else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP));    \

  }

#endif

/* Don't default to pcc-struct-return, we want to retain compatibility with

   older gcc versions AND pcc-struct-return is nonreentrant.

   (even though the SVR4 ABI for the i386 says that records and unions are

   returned in memory).  */

#undef  DEFAULT_PCC_STRUCT_RETURN

#define DEFAULT_PCC_STRUCT_RETURN 0

/* FreeBSD sets the rounding precision of the FPU to 53 bits.  Let the

   compiler get the contents of <float.h> and std::numeric_limits correct.  */

#undef TARGET_96_ROUND_53_LONG_DOUBLE

#define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT)