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1 /* Definitions for Linux for S/390.
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2 Copyright (C) 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007
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3 Free Software Foundation, Inc.
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4 Contributed by Hartmut Penner (hpenner@de.ibm.com) and
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5 Ulrich Weigand (uweigand@de.ibm.com).
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6
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7 This file is part of GCC.
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8
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9 GCC is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License as published by the Free
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11 Software Foundation; either version 3, or (at your option) any later
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12 version.
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13
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14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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17 for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with GCC; see the file COPYING3. If not see
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21 <http://www.gnu.org/licenses/>. */
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22
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23 #ifndef _LINUX_H
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24 #define _LINUX_H
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25
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26 /* Target specific version string. */
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27
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28 #ifdef DEFAULT_TARGET_64BIT
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29 #undef TARGET_VERSION
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30 #define TARGET_VERSION fprintf (stderr, " (Linux for zSeries)");
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31 #else
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32 #undef TARGET_VERSION
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33 #define TARGET_VERSION fprintf (stderr, " (Linux for S/390)");
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34 #endif
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35
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36
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37 /* Target specific type definitions. */
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38
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39 /* ??? Do we really want long as size_t on 31-bit? */
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40 #undef SIZE_TYPE
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41 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "long unsigned int")
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42 #undef PTRDIFF_TYPE
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43 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
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44
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45 #undef WCHAR_TYPE
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46 #define WCHAR_TYPE "int"
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47 #undef WCHAR_TYPE_SIZE
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48 #define WCHAR_TYPE_SIZE 32
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49
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50
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51 /* Target specific preprocessor settings. */
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52
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53 #define TARGET_OS_CPP_BUILTINS() \
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54 do \
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55 { \
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56 LINUX_TARGET_OS_CPP_BUILTINS(); \
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57 } \
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58 while (0)
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59
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60
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61 /* Target specific assembler settings. */
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62
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63 #undef ASM_SPEC
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64 #define ASM_SPEC "%{m31&m64}%{mesa&mzarch}%{march=*}"
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65
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66
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67 /* Target specific linker settings. */
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68
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69 #ifdef DEFAULT_TARGET_64BIT
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70 #define MULTILIB_DEFAULTS { "m64" }
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71 #else
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72 #define MULTILIB_DEFAULTS { "m31" }
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73 #endif
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74
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75 #define GLIBC_DYNAMIC_LINKER32 "/lib/ld.so.1"
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76 #define GLIBC_DYNAMIC_LINKER64 "/lib/ld64.so.1"
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77
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78 #undef LINK_SPEC
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79 #define LINK_SPEC \
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80 "%{m31:-m elf_s390}%{m64:-m elf64_s390} \
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81 %{shared:-shared} \
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82 %{!shared: \
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83 %{static:-static} \
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84 %{!static: \
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85 %{rdynamic:-export-dynamic} \
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86 %{!dynamic-linker: \
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87 %{m31:-dynamic-linker " LINUX_DYNAMIC_LINKER32 "} \
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88 %{m64:-dynamic-linker " LINUX_DYNAMIC_LINKER64 "}}}}"
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89
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90 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
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91
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92 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
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93
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94 #define MD_UNWIND_SUPPORT "config/s390/linux-unwind.h"
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95
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96 #ifdef TARGET_LIBC_PROVIDES_SSP
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97 /* s390 glibc provides __stack_chk_guard in 0x14(tp),
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98 s390x glibc provides it at 0x28(tp). */
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99 #define TARGET_THREAD_SSP_OFFSET (TARGET_64BIT ? 0x28 : 0x14)
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100 #endif
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101
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102 /* Define if long doubles should be mangled as 'g'. */
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103 #define TARGET_ALTERNATE_LONG_DOUBLE_MANGLING
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104
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105 #endif
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