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/* Definitions for Linux for S/390.

   Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007

   Free Software Foundation, Inc.

   Contributed by Hartmut Penner (hpenner@de.ibm.com) and

                  Ulrich Weigand (uweigand@de.ibm.com).

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/>.  */

#ifndef _LINUX_H

#define _LINUX_H

/* Target specific version string.  */

#ifdef DEFAULT_TARGET_64BIT

#undef  TARGET_VERSION

#define TARGET_VERSION fprintf (stderr, " (Linux for zSeries)");

#else

#undef  TARGET_VERSION

#define TARGET_VERSION fprintf (stderr, " (Linux for S/390)");

#endif

/* Target specific type definitions.  */

/* ??? Do we really want long as size_t on 31-bit?  */

#undef  SIZE_TYPE

#define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int")

#undef  PTRDIFF_TYPE

#define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")

#undef  WCHAR_TYPE

#define WCHAR_TYPE "int"

#undef  WCHAR_TYPE_SIZE

#define WCHAR_TYPE_SIZE 32

/* Target specific preprocessor settings.  */

#define TARGET_OS_CPP_BUILTINS()                \

  do                                            \

    {                                           \

      LINUX_TARGET_OS_CPP_BUILTINS();           \

    }                                           \

  while (0)

/* Target specific assembler settings.  */

#undef  ASM_SPEC

#define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}"

/* Target specific linker settings.  */

#ifdef DEFAULT_TARGET_64BIT

#define MULTILIB_DEFAULTS { "m64" }

#else

#define MULTILIB_DEFAULTS { "m31" }

#endif

#define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"

#define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"

#undef  LINK_SPEC

#define LINK_SPEC \

  "%{m31:-m elf_s390}%{m64:-m elf64_s390} \

   %{shared:-shared} \

   %{!shared: \

      %{static:-static} \

      %{!static: \

        %{rdynamic:-export-dynamic} \

        %{!dynamic-linker: \

          %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \

          %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}"

#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"

#define TARGET_ASM_FILE_END file_end_indicate_exec_stack

#define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h"

#ifdef TARGET_LIBC_PROVIDES_SSP

/* s390 glibc provides __stack_chk_guard in 0x14(tp),

   s390x glibc provides it at 0x28(tp).  */

#define TARGET_THREAD_SSP_OFFSET        (TARGET_64BIT ? 0x28 : 0x14)

#endif

/* Define if long doubles should be mangled as 'g'.  */

#define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING

#endif