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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [rs6000/] [lynx.h] - Blame information for rev 414

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1 282 jeremybenn
/* Definitions for Rs6000 running LynxOS.
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   Copyright (C) 1995, 1996, 2000, 2002, 2003, 2004, 2005, 2007
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   Free Software Foundation, Inc.
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   Contributed by David Henkel-Wallace, Cygnus Support (gumby@cygnus.com)
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   Rewritten by Adam Nemet, LynuxWorks Inc.
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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
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   under the terms of the GNU General Public License as published
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   by the Free Software Foundation; either version 3, or (at your
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   option) any later version.
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   GCC is distributed in the hope that it will be useful, but WITHOUT
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   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
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   License 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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/* Override the definition in sysv4.h.  */
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#undef TARGET_VERSION
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#define TARGET_VERSION fputs (" (PowerPC/LynxOS)", stderr);
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/* Undefine the definition to enable the LynxOS default from the
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   top-level lynx.h.  */
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#undef SUBTARGET_EXTRA_SPECS
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/* Get rid off the spec definitions from rs6000/sysv4.h.  */
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#undef CPP_SPEC
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#define CPP_SPEC \
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"%{msoft-float: -D_SOFT_FLOAT} \
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 %(cpp_cpu) \
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 %(cpp_os_lynx)"
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/* LynxOS only supports big-endian on PPC so we override the
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   definition from sysv4.h.  Since the LynxOS 4.0 compiler was set to
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   return every structure in memory regardless of their size we have
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   to emulate the same behavior here with disabling the SVR4 structure
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   returning.  */
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#undef CC1_SPEC
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#define CC1_SPEC \
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"%{G*} %{mno-sdata:-msdata=none} \
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 %{maltivec:-mabi=altivec} \
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 -maix-struct-return"
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#undef ASM_SPEC
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#define ASM_SPEC \
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"%(asm_cpu) \
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 %{,assembler|,assembler-with-cpp: %{mregnames} %{mno-regnames}}"
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#undef STARTFILE_SPEC
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#undef ENDFILE_SPEC
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#undef LIB_SPEC
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#undef LINK_SPEC
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#define LINK_SPEC \
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"%{!msdata=none:%{G*}} %{msdata=none:-G0} \
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 %(link_os_lynx)"
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/* Override the definition from sysv4.h.  */
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#undef TARGET_OS_CPP_BUILTINS
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#define TARGET_OS_CPP_BUILTINS()                \
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  do                                            \
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    {                                           \
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      builtin_define ("__BIG_ENDIAN__");        \
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      builtin_define ("__powerpc__");           \
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      builtin_assert ("cpu=powerpc");           \
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      builtin_assert ("machine=powerpc");       \
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      builtin_define ("__PPC__");               \
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    }                                           \
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  while (0)
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/* Override the rs6000.h definition.  */
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#undef ASM_APP_ON
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#define ASM_APP_ON "#APP\n"
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/* Override the rs6000.h definition.  */
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#undef ASM_APP_OFF
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#define ASM_APP_OFF "#NO_APP\n"
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/* LynxOS does not do anything with .fixup plus let's not create
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   writable section for linkonce.r and linkonce.t.  */
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#undef RELOCATABLE_NEEDS_FIXUP
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/* Override these from rs6000.h with the generic definition.  */
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#undef SIZE_TYPE
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#undef ASM_OUTPUT_ALIGN
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#undef PREFERRED_DEBUGGING_TYPE
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/* The file rs6000.c defines TARGET_HAVE_TLS unconditionally to the
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   value of HAVE_AS_TLS.  HAVE_AS_TLS is true as gas support for TLS
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   is detected by configure.  Override the definition to false.  */
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#undef HAVE_AS_TLS
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#define HAVE_AS_TLS 0
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#ifdef CRT_BEGIN
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/* This function is part of crtbegin*.o which is at the beginning of
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   the link and is called from .fini which is usually toward the end
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   of the executable.  Make it longcall so that we don't limit the
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   text size of the executables to 32M.  */
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static void __do_global_dtors_aux (void) __attribute__ ((longcall));
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#endif  /* CRT_BEGIN */
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#ifdef CRT_END
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/* Similarly here.  This function resides in crtend*.o which is toward
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   to end of the link and is called from .init which is at the
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   beginning.  */
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static void __do_global_ctors_aux (void) __attribute__ ((longcall));
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#endif  /* CRT_END */

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