diff gcc/config/rs6000/lynx.h @ 0:a06113de4d67

first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children f6334be47118
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/config/rs6000/lynx.h	Fri Jul 17 14:47:48 2009 +0900
@@ -0,0 +1,123 @@
+/* Definitions for Rs6000 running LynxOS.
+   Copyright (C) 1995, 1996, 2000, 2002, 2003, 2004, 2005, 2007
+   Free Software Foundation, Inc.
+   Contributed by David Henkel-Wallace, Cygnus Support (gumby@cygnus.com)
+   Rewritten by Adam Nemet, LynuxWorks Inc.
+
+   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/>.  */
+
+/* Override the definition in sysv4.h.  */
+
+#undef TARGET_VERSION
+#define TARGET_VERSION fputs (" (PowerPC/LynxOS)", stderr);
+
+/* Undefine the definition to enable the LynxOS default from the
+   top-level lynx.h.  */
+
+#undef SUBTARGET_EXTRA_SPECS
+
+/* Get rid off the spec definitions from rs6000/sysv4.h.  */
+
+#undef CPP_SPEC
+#define CPP_SPEC \
+"%{msoft-float: -D_SOFT_FLOAT} \
+ %(cpp_cpu) \
+ %(cpp_os_lynx)"
+
+/* LynxOS only supports big-endian on PPC so we override the
+   definition from sysv4.h.  Since the LynxOS 4.0 compiler was set to
+   return every structure in memory regardless of their size we have
+   to emulate the same behavior here with disabling the SVR4 structure
+   returning.  */
+
+#undef CC1_SPEC
+#define CC1_SPEC \
+"%{G*} %{mno-sdata:-msdata=none} \
+ %{maltivec:-mabi=altivec} \
+ -maix-struct-return"
+
+#undef ASM_SPEC
+#define ASM_SPEC \
+"%(asm_cpu) \
+ %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}"
+
+#undef STARTFILE_SPEC
+#undef ENDFILE_SPEC
+#undef LIB_SPEC
+#undef LINK_SPEC
+#define LINK_SPEC \
+"%{!msdata=none:%{G*}} %{msdata=none:-G0} \
+ %(link_os_lynx)"
+
+/* Override the definition from sysv4.h.  */
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS()		\
+  do						\
+    {						\
+      builtin_define ("__BIG_ENDIAN__");	\
+      builtin_define ("__powerpc__");		\
+      builtin_assert ("cpu=powerpc");		\
+      builtin_assert ("machine=powerpc");	\
+      builtin_define ("__PPC__");		\
+    }						\
+  while (0)
+
+/* Override the rs6000.h definition.  */
+
+#undef ASM_APP_ON
+#define ASM_APP_ON "#APP\n"
+
+/* Override the rs6000.h definition.  */
+
+#undef ASM_APP_OFF
+#define ASM_APP_OFF "#NO_APP\n"
+
+/* LynxOS does not do anything with .fixup plus let's not create
+   writable section for linkonce.r and linkonce.t.  */
+
+#undef RELOCATABLE_NEEDS_FIXUP
+
+/* Override these from rs6000.h with the generic definition.  */
+
+#undef SIZE_TYPE
+#undef ASM_OUTPUT_ALIGN
+#undef PREFERRED_DEBUGGING_TYPE
+
+/* The file rs6000.c defines TARGET_HAVE_TLS unconditionally to the
+   value of HAVE_AS_TLS.  HAVE_AS_TLS is true as gas support for TLS
+   is detected by configure.  Override the definition to false.  */
+
+#undef HAVE_AS_TLS
+#define HAVE_AS_TLS 0
+
+#ifdef CRT_BEGIN
+/* This function is part of crtbegin*.o which is at the beginning of
+   the link and is called from .fini which is usually toward the end
+   of the executable.  Make it longcall so that we don't limit the
+   text size of the executables to 32M.  */
+
+static void __do_global_dtors_aux (void) __attribute__ ((longcall));
+#endif	/* CRT_BEGIN */
+
+#ifdef CRT_END
+/* Similarly here.  This function resides in crtend*.o which is toward
+   to end of the link and is called from .init which is at the
+   beginning.  */
+
+static void __do_global_ctors_aux (void) __attribute__ ((longcall));
+#endif	/* CRT_END */