| /* Definitions for Rs6000 running LynxOS. |
| Copyright (C) 1995, 1996, 2000, 2002, 2003, 2004 |
| 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 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, 59 Temple Place - Suite 330, Boston, |
| MA 02111-1307, USA. */ |
| |
| /* 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} \ |
| -mno-svr4-struct-return" |
| |
| #undef ASM_SPEC |
| #define ASM_SPEC \ |
| "%(asm_cpu) \ |
| "/* APPLE LOCAL mainline 2007-03-13 5040758 */" \ |
| %{,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" |
| |
| #undef EXTRA_SUBTARGET_SWITCHES |
| #define EXTRA_SUBTARGET_SWITCHES SUBTARGET_OS_LYNX_SWITCHES |
| |
| /* 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 |