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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [vxworks.h] - Blame information for rev 282

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1 282 jeremybenn
/* Common VxWorks target definitions for GNU compiler.
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   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
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   Free Software Foundation, Inc.
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   Contributed by Wind River Systems.
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   Rewritten by CodeSourcery, LLC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3.  If not see
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<http://www.gnu.org/licenses/>.  */
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/* Assert that we are targetting VxWorks.  */
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#undef TARGET_VXWORKS
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#define TARGET_VXWORKS 1
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/* In kernel mode, VxWorks provides all the libraries itself, as well as
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   the functionality of startup files, etc.  In RTP mode, it behaves more
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   like a traditional Unix, with more external files.  Most of our specs
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   must be aware of the difference.  */
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/* We look for the VxWorks header files using the environment
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   variables that are set in VxWorks to indicate the location of the
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   system header files.  We use -idirafter so that the GCC's own
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   header-file directories (containing <stddef.h>, etc.) come before
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   the VxWorks system header directories.  */
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/* Since we provide a default -isystem, expand -isystem on the command
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   line early.  */
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#undef VXWORKS_ADDITIONAL_CPP_SPEC
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#define VXWORKS_ADDITIONAL_CPP_SPEC             \
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 "%{!nostdinc:                                  \
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    %{isystem*} -idirafter                      \
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    %{mrtp: %:getenv(WIND_USR /h)               \
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      ;:    %:getenv(WIND_BASE /target/h)}}"
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/* The references to __init and __fini will be satisfied by
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   libc_internal.a.  */
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#undef VXWORKS_LIB_SPEC
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#define VXWORKS_LIB_SPEC                                                \
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"%{mrtp:%{shared:-u " USER_LABEL_PREFIX "__init -u " USER_LABEL_PREFIX "__fini} \
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        %{!shared:%{non-static:-u " USER_LABEL_PREFIX "_STI__6__rtld -ldl} \
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                  --start-group -lc -lgcc -lc_internal -lnet -ldsi      \
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                  --end-group}}"
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/* The no-op spec for "-shared" below is present because otherwise GCC
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   will treat it as an unrecognized option.  */
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#undef VXWORKS_LINK_SPEC
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#define VXWORKS_LINK_SPEC                               \
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"%{!mrtp:-r}                                            \
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 %{!shared:                                             \
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   %{mrtp:-q %{h*}                                      \
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          %{R*} %{!Wl,-T*: %{!T*: %(link_start) }}      \
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          %(link_target) %(link_os)}}                   \
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 %{v:-v}                                                \
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 %{shared:-shared}                                      \
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 %{Bstatic:-Bstatic}                                    \
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 %{Bdynamic:-Bdynamic}                                  \
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 %{!Xbind-lazy:-z now}                                  \
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 %{Xbind-now:%{Xbind-lazy:                              \
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   %e-Xbind-now and -Xbind-lazy are incompatible}}      \
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 %{mrtp:%{!shared:%{!non-static:-static}                \
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                  %{non-static:--force-dynamic --export-dynamic}}}"
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/* For VxWorks, the system provides libc_internal.a.  This is a superset
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   of libgcc.a; we want to use it.  Make sure not to dynamically export
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   any of its symbols, though.  Always look for libgcc.a first so that
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   we get the latest versions of the GNU intrinsics during our builds.  */
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#undef VXWORKS_LIBGCC_SPEC
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#define VXWORKS_LIBGCC_SPEC \
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  "-lgcc %{mrtp:--exclude-libs=libc_internal,libgcc -lc_internal}"
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#undef VXWORKS_STARTFILE_SPEC
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#define VXWORKS_STARTFILE_SPEC "%{mrtp:%{!shared:-l:crt0.o}}"
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#define VXWORKS_ENDFILE_SPEC ""
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/* Do VxWorks-specific parts of OVERRIDE_OPTIONS.  */
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#undef VXWORKS_OVERRIDE_OPTIONS
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#define VXWORKS_OVERRIDE_OPTIONS vxworks_override_options ()
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extern void vxworks_override_options (void);
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/* Only RTPs support prioritized constructors and destructors:
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   the implementation relies on numbered .ctors* sections.  */
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#define SUPPORTS_INIT_PRIORITY TARGET_VXWORKS_RTP
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/* VxWorks requires special handling of constructors and destructors.
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   All VxWorks configurations must use these functions.  */
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#undef TARGET_ASM_CONSTRUCTOR
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#define TARGET_ASM_CONSTRUCTOR vxworks_asm_out_constructor
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#undef TARGET_ASM_DESTRUCTOR
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#define TARGET_ASM_DESTRUCTOR vxworks_asm_out_destructor
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extern void vxworks_asm_out_constructor (rtx symbol, int priority);
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extern void vxworks_asm_out_destructor (rtx symbol, int priority);
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/* Override the vxworks-dummy.h definitions.  TARGET_VXWORKS_RTP
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   is defined by vxworks.opt.  */
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#undef VXWORKS_GOTT_BASE
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#define VXWORKS_GOTT_BASE "__GOTT_BASE__"
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#undef VXWORKS_GOTT_INDEX
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#define VXWORKS_GOTT_INDEX "__GOTT_INDEX__"
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/* As for svr4.h (which not all VxWorks targets include). */
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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/* Both kernels and RTPs have the facilities required by this macro.  */
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#define TARGET_POSIX_IO
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/* A VxWorks implementation of TARGET_OS_CPP_BUILTINS.  */
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#define VXWORKS_OS_CPP_BUILTINS()                                       \
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  do                                                                    \
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    {                                                                   \
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      builtin_define ("__vxworks");                                     \
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      builtin_define ("__VXWORKS__");                                   \
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      builtin_assert ("system=unix");                                   \
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      if (TARGET_VXWORKS_RTP)                                           \
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        builtin_define ("__RTP__");                                     \
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      else                                                              \
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        builtin_define ("_WRS_KERNEL");                                 \
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    }                                                                   \
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  while (0)
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#define VXWORKS_KIND VXWORKS_KIND_NORMAL
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/* The diab linker does not handle .gnu_attribute sections.  */
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#undef HAVE_AS_GNU_ATTRIBUTE

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