diff options
Diffstat (limited to 'gcc-4.4.3/gcc/config/rs6000/lynx.h')
-rw-r--r-- | gcc-4.4.3/gcc/config/rs6000/lynx.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/gcc-4.4.3/gcc/config/rs6000/lynx.h b/gcc-4.4.3/gcc/config/rs6000/lynx.h new file mode 100644 index 000000000..30dd2999c --- /dev/null +++ b/gcc-4.4.3/gcc/config/rs6000/lynx.h @@ -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 */ |