Subversion Repositories openrisc_2011-10-31

/* Definitions for GCC.  Part of the machine description for CRIS.

   Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008

   Free Software Foundation, Inc.

   Contributed by Axis Communications.  Written by Hans-Peter Nilsson.

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/>.  */

/* After the first "Node:" comment comes all preprocessor directives and

   attached declarations described in the info files, the "Using and

   Porting GCC" manual (uapgcc), in the same order as found in the "Target

   macros" section in the gcc-2.9x CVS edition of 2000-03-17.  FIXME: Not

   really, but needs an update anyway.

   There is no generic copy-of-uapgcc comment, you'll have to see uapgcc

   for that.  If applicable, there is a CRIS-specific comment.  The order

   of macro definitions follow the order in the manual.  Every section in

   the manual (node in the info pages) has an introductory `Node:

   <subchapter>' comment.  If no macros are defined for a section, only

   the section-comment is present.  */

/* This file defines the macros for cris-axis-linux-gnu that are not

   covered by cris.h, elfos.h and (config/)linux.h.  */

/* Make sure we have a valid TARGET_CPU_DEFAULT, so we can assume it

   and take shortcuts below.  */

#ifndef TARGET_CPU_DEFAULT

#error "TARGET_CPU_DEFAULT not defined"

#elif (TARGET_CPU_DEFAULT+0) != 10 && (TARGET_CPU_DEFAULT+0) != 32

#error "TARGET_CPU_DEFAULT must be 10 or 32, or this file be updated"

#endif

/* Node: Instruction Output */

#undef USER_LABEL_PREFIX

#define USER_LABEL_PREFIX ""

/* Node: Driver */

/* These macros are CRIS-specific, but used in target driver macros.  */

#undef CRIS_CPP_SUBTARGET_SPEC

#if TARGET_CPU_DEFAULT == 32

# define CRIS_CPP_SUBTARGET_SPEC \

  "%{pthread:-D_REENTRANT}\

   %{!march=*:%{!cpu=*:-D__arch_v32 -D__CRIS_arch_version=32}}"

#else

# define CRIS_CPP_SUBTARGET_SPEC \

  "%{pthread:-D_REENTRANT}\

   %{!march=*:%{!cpu=*:-D__arch_v10 -D__CRIS_arch_version=10}}"

#endif

#undef CRIS_CC1_SUBTARGET_SPEC

#if TARGET_CPU_DEFAULT == 32

# define CRIS_CC1_SUBTARGET_SPEC \

 "%{!march=*:%{!cpu=*:-march=v32}}"

#define CRIS_SUBTARGET_DEFAULT_ARCH MASK_AVOID_GOTPLT

#else

# define CRIS_CC1_SUBTARGET_SPEC \

 "%{!march=*:%{!cpu=*:-march=v10}}"

#define CRIS_SUBTARGET_DEFAULT_ARCH 0

#endif

#undef CRIS_ASM_SUBTARGET_SPEC

#if TARGET_CPU_DEFAULT == 32

# define CRIS_ASM_SUBTARGET_SPEC \

 "--em=criself \

  %{!march=*:%{!cpu=*:--march=v32}} \

  %{!fleading-underscore:--no-underscore}\

  %{fPIC|fpic|fPIE|fpie: --pic}"

#else

# define CRIS_ASM_SUBTARGET_SPEC \

 "--em=criself \

  %{!march=*:%{!cpu=*:--march=v10}} \

  %{!fleading-underscore:--no-underscore}\

  %{fPIC|fpic|fPIE|fpie: --pic}"

#endif

/* Previously controlled by target_flags.  */

#undef TARGET_LINUX

#define TARGET_LINUX 1

#undef CRIS_SUBTARGET_DEFAULT

#define CRIS_SUBTARGET_DEFAULT                  \

  (MASK_SVINTO                                  \

   + MASK_ETRAX4_ADD                            \

   + MASK_ALIGN_BY_32                           \

   + CRIS_SUBTARGET_DEFAULT_ARCH)

#undef CRIS_DEFAULT_CPU_VERSION

#define CRIS_DEFAULT_CPU_VERSION CRIS_CPU_NG

#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"

/* We need an -rpath-link to ld.so.1, and presumably to each directory

   specified with -B.  */

#undef CRIS_LINK_SUBTARGET_SPEC

#define CRIS_LINK_SUBTARGET_SPEC \

 "-mcrislinux\

  %{B*:-rpath-link %*}\

  %{!nostdlib:-rpath-link ../sys-include/asm/../../lib%s}\

  %{shared} %{static}\

  %{symbolic:-Bdynamic} %{shlib:-Bdynamic} %{static:-Bstatic}\

  %{!shared:%{!static:\

              %{rdynamic:-export-dynamic}\

              %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}}}\

  %{!r:%{O2|O3: --gc-sections}}"

/* Node: Run-time Target */

/* For the cris-*-linux* subtarget.  */

#undef TARGET_OS_CPP_BUILTINS

#define TARGET_OS_CPP_BUILTINS()                \

  do                                            \

    {                                           \

      LINUX_TARGET_OS_CPP_BUILTINS();           \

      if (flag_leading_underscore <= 0)          \

        builtin_define ("__NO_UNDERSCORES__");  \

    }                                           \

  while (0)

/* Node: Sections */

/* GNU/Linux has crti and crtn and does not need the

   CRT_CALL_STATIC_FUNCTION trick in cris.h.  */

#undef CRT_CALL_STATIC_FUNCTION

/*

 * Local variables:

 * eval: (c-set-style "gnu")

 * indent-tabs-mode: t

 * End:

 */