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/* Common VxWorks target definitions for GNU compiler.
Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005
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 2, 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 COPYING. If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
/* 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*} %{!Wl,-T*: %{!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 OVERRIDE_OPTIONS. */
#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__"
/* 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
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