/* Common VxWorks target definitions for GNU compiler.
- Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
+ Free Software Foundation, Inc.
Contributed by Wind River Systems.
+ Rewritten by CodeSourcery, LLC.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC 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 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.
-GNU CC 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.
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
-
-/* Specify what to link with. */
-/* VxWorks does all the library stuff itself. */
-#undef LIB_SPEC
-#define LIB_SPEC ""
-
-#undef LINK_SPEC
-#define LINK_SPEC "-r"
-
-/* VxWorks provides the functionality of crt0.o and friends itself. */
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC ""
-
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC ""
-
-/* VxWorks cannot have dots in constructor labels, because it uses a
- mutant variation of collect2 that generates C code instead of
- assembly. Thus each constructor label must be a legitimate C
- symbol. FIXME: Have VxWorks use real collect2 instead. */
-
-#undef NO_DOLLAR_IN_LABEL
-#define NO_DOT_IN_LABEL
-
-/* enable #pragma pack(n) */
-#define HANDLE_SYSV_PRAGMA
-
-/* No underscore is prepended to any C symbol name. */
-#undef USER_LABEL_PREFIX
-#define USER_LABEL_PREFIX ""
-
-/* VxWorks uses wchar_t == unsigned short (UCS2) on all architectures. */
-#undef WCHAR_TYPE
-#define WCHAR_TYPE "short unsigned int"
-#undef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE 16
-
-/* Dwarf2 unwind info is not supported. */
-#define DWARF2_UNWIND_INFO 0
-/* Weak symbols and link-once sections are not enabled by default. */
-#define DEFAULT_USE_WEAK 0
-
-/* Only supported debug format is Dwarf2. */
-#undef DBX_DEBUGGING_INFO
-#undef DWARF_DEBUGGING_INFO
+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*} %{!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__"
+
+/* As for svr4.h (which not all VxWorks targets include). */
+#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
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