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/* Common VxWorks target definitions for GNU compiler.

   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2010

   Free Software Foundation, Inc.

   Contributed by Wind River Systems.

   Rewritten 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/>.  */

/* Assert that we are targetting VxWorks.  */

#undef TARGET_VXWORKS

#define TARGET_VXWORKS 1

/* In kernel mode, VxWorks provides all the libraries itself, as well as

   the functionality of startup files, etc.  In RTP mode, it behaves more

   like a traditional Unix, with more external files.  Most of our specs

   must be aware of the difference.  */

/* We look for the VxWorks header files using the environment

   variables that are set in VxWorks to indicate the location of the

   system header files.  We use -idirafter so that the GCC's own

   header-file directories (containing <stddef.h>, etc.) come before

   the VxWorks system header directories.  */

/* Since we provide a default -isystem, expand -isystem on the command

   line early.  */

#undef VXWORKS_ADDITIONAL_CPP_SPEC

#define VXWORKS_ADDITIONAL_CPP_SPEC             \

 "%{!nostdinc:                                  \

    %{isystem*} -idirafter                      \

    %{mrtp: %:getenv(WIND_USR /h)               \

      ;:    %:getenv(WIND_BASE /target/h)}}"

/* The references to __init and __fini will be satisfied by

   libc_internal.a.  */

#undef VXWORKS_LIB_SPEC

#define VXWORKS_LIB_SPEC                                                \

"%{mrtp:%{shared:-u " USER_LABEL_PREFIX "__init -u " USER_LABEL_PREFIX "__fini} \

        %{!shared:%{non-static:-u " USER_LABEL_PREFIX "_STI__6__rtld -ldl} \

                  --start-group -lc -lgcc -lc_internal -lnet -ldsi      \

                  --end-group}}"

/* The no-op spec for "-shared" below is present because otherwise GCC

   will treat it as an unrecognized option.  */

#undef VXWORKS_LINK_SPEC

#define VXWORKS_LINK_SPEC                               \

"%{!mrtp:-r}                                            \

 %{!shared:                                             \

   %{mrtp:-q %{h*}                                      \

          %{R*} %{!T*: %(link_start) }                  \

          %(link_target) %(link_os)}}                   \

 %{v:-v}                                                \

 %{shared:-shared}                                      \

 %{Bstatic:-Bstatic}                                    \

 %{Bdynamic:-Bdynamic}                                  \

 %{!Xbind-lazy:-z now}                                  \

 %{Xbind-now:%{Xbind-lazy:                              \

   %e-Xbind-now and -Xbind-lazy are incompatible}}      \

 %{mrtp:%{!shared:%{!non-static:-static}                \

                  %{non-static:--force-dynamic --export-dynamic}}}"

/* For VxWorks, the system provides libc_internal.a.  This is a superset

   of libgcc.a; we want to use it.  Make sure not to dynamically export

   any of its symbols, though.  Always look for libgcc.a first so that

   we get the latest versions of the GNU intrinsics during our builds.  */

#undef VXWORKS_LIBGCC_SPEC

#define VXWORKS_LIBGCC_SPEC \

  "-lgcc %{mrtp:--exclude-libs=libc_internal,libgcc -lc_internal}"

#undef VXWORKS_STARTFILE_SPEC

#define VXWORKS_STARTFILE_SPEC "%{mrtp:%{!shared:-l:crt0.o}}"

#define VXWORKS_ENDFILE_SPEC ""

/* Do VxWorks-specific parts of TARGET_OPTION_OVERRIDE.  */

#undef VXWORKS_OVERRIDE_OPTIONS

#define VXWORKS_OVERRIDE_OPTIONS vxworks_override_options ()

extern void vxworks_override_options (void);

/* Only RTPs support prioritized constructors and destructors:

   the implementation relies on numbered .ctors* sections.  */

#define SUPPORTS_INIT_PRIORITY TARGET_VXWORKS_RTP

/* VxWorks requires special handling of constructors and destructors.

   All VxWorks configurations must use these functions.  */

#undef TARGET_ASM_CONSTRUCTOR

#define TARGET_ASM_CONSTRUCTOR vxworks_asm_out_constructor

#undef TARGET_ASM_DESTRUCTOR

#define TARGET_ASM_DESTRUCTOR vxworks_asm_out_destructor

extern void vxworks_asm_out_constructor (rtx symbol, int priority);

extern void vxworks_asm_out_destructor (rtx symbol, int priority);

/* Override the vxworks-dummy.h definitions.  TARGET_VXWORKS_RTP

   is defined by vxworks.opt.  */

#undef VXWORKS_GOTT_BASE

#define VXWORKS_GOTT_BASE "__GOTT_BASE__"

#undef VXWORKS_GOTT_INDEX

#define VXWORKS_GOTT_INDEX "__GOTT_INDEX__"

#undef PTRDIFF_TYPE

#define PTRDIFF_TYPE "int"

#undef SIZE_TYPE

#define SIZE_TYPE "unsigned int"

/* Both kernels and RTPs have the facilities required by this macro.  */

#define TARGET_POSIX_IO

/* A VxWorks implementation of TARGET_OS_CPP_BUILTINS.  */

#define VXWORKS_OS_CPP_BUILTINS()                                       \

  do                                                                    \

    {                                                                   \

      builtin_define ("__vxworks");                                     \

      builtin_define ("__VXWORKS__");                                   \

      builtin_assert ("system=unix");                                   \

      if (TARGET_VXWORKS_RTP)                                           \

        builtin_define ("__RTP__");                                     \

      else                                                              \

        builtin_define ("_WRS_KERNEL");                                 \

    }                                                                   \

  while (0)

#define VXWORKS_KIND VXWORKS_KIND_NORMAL

/* The diab linker does not handle .gnu_attribute sections.  */

#undef HAVE_AS_GNU_ATTRIBUTE