gcc/config/s390/linux.h

   1 /* Definitions for Linux for S/390.
   2    Copyright (C) 1999-2014 Free Software Foundation, Inc.
   3    Contributed by Hartmut Penner (hpenner@de.ibm.com) and
   4                   Ulrich Weigand (uweigand@de.ibm.com).
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef _LINUX_H
  23 #define _LINUX_H
  24
  25 /* Target specific type definitions.  */
  26
  27 /* ??? Do we really want long as size_t on 31-bit?  */
  28 #undef  SIZE_TYPE
  29 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int")
  30 #undef  PTRDIFF_TYPE
  31 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
  32
  33 #undef  WCHAR_TYPE
  34 #define WCHAR_TYPE "int"
  35 #undef  WCHAR_TYPE_SIZE
  36 #define WCHAR_TYPE_SIZE 32
  37
  38
  39 /* Target specific preprocessor settings.  */
  40
  41 #define TARGET_OS_CPP_BUILTINS()                \
  42   do                                            \
  43     {                                           \
  44       GNU_USER_TARGET_OS_CPP_BUILTINS();        \
  45     }                                           \
  46   while (0)
  47
  48
  49 /* Target specific assembler settings.  */
  50
  51 #undef  ASM_SPEC
  52 #define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}"
  53
  54
  55 /* Target specific linker settings.  */
  56
  57 #ifdef DEFAULT_TARGET_64BIT
  58 #define MULTILIB_DEFAULTS { "m64" }
  59 #else
  60 #define MULTILIB_DEFAULTS { "m31" }
  61 #endif
  62
  63 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
  64 #define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"
  65
  66 #undef  LINK_SPEC
  67 #define LINK_SPEC \
  68   "%{m31:-m elf_s390}%{m64:-m elf64_s390} \
  69    %{shared:-shared} \
  70    %{!shared: \
  71       %{static:-static} \
  72       %{!static: \
  73         %{rdynamic:-export-dynamic} \
  74         %{m31:-dynamic-linker " GNU_USER_DYNAMIC_LINKER32 "} \
  75         %{m64:-dynamic-linker " GNU_USER_DYNAMIC_LINKER64 "}}}"
  76
  77 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
  78
  79 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
  80
  81 #ifdef TARGET_LIBC_PROVIDES_SSP
  82 /* s390 glibc provides __stack_chk_guard in 0x14(tp),
  83    s390x glibc provides it at 0x28(tp).  */
  84 #define TARGET_THREAD_SSP_OFFSET        (TARGET_64BIT ? 0x28 : 0x14)
  85 #endif
  86
  87 /* Define if long doubles should be mangled as 'g'.  */
  88 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
  89
  90 #undef TARGET_LIBC_HAS_FUNCTION
  91 #define TARGET_LIBC_HAS_FUNCTION gnu_libc_has_function
  92
  93 #endif