gcc/config/i370/linux.h

   1 /* Definitions of target machine for GNU compiler.  System/370 version.
   2    Copyright (C) 1989, 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
   3    Contributed by Jan Stein (jan@cd.chalmers.se).
   4    Modified for Linux/390 by Linas Vepstas (linas@linas.org)
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU CC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU CC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23
  24 #define TARGET_VERSION fprintf (stderr, " (i370 GNU/Linux with ELF)");
  25
  26 /* Specify that we're generating code for a Linux port to 370 */
  27
  28 #define TARGET_ELF_ABI
  29 #define LINUX_DEFAULT_ELF
  30
  31 /* Include system common definitions */
  32 /* TODO: convert include to ${tm_file} list in config.gcc.  */
  33 #include "i370/i370.h"
  34
  35 /* Target OS preprocessor built-ins.  */
  36 #define TARGET_OS_CPP_BUILTINS()                \
  37     do {                                        \
  38         builtin_define_std ("unix");            \
  39         builtin_define_std ("linux");           \
  40         builtin_define ("__gnu_linux__");       \
  41         builtin_define ("__ELF__");             \
  42         builtin_assert ("system=posix");        \
  43     } while (0)
  44
  45 /* Options for this target machine.  */
  46
  47 #define LIBGCC_SPEC "libgcc.a%s"
  48
  49 #ifdef SOME_FUTURE_DAY
  50
  51 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) %(cpp_endian_big) \
  52 %{mcall-linux: %(cpp_os_linux) } \
  53 %{!mcall-linux: %(cpp_os_default) }"
  54
  55 #define LIB_SPEC "\
  56 %{mcall-linux: %(lib_linux) } \
  57 %{!mcall-linux:%(lib_default) }"
  58
  59 #define STARTFILE_SPEC "\
  60 %{mcall-linux: %(startfile_linux) } \
  61 %{!mcall-linux: %(startfile_default) }"
  62
  63 #define ENDFILE_SPEC "\
  64 %{mcall-linux: %(endfile_linux) } \
  65 %{!mcall-linux: %(endfile_default) }"
  66
  67 /* GNU/Linux support.  */
  68 #ifndef LIB_LINUX_SPEC
  69 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } %{!mnewlib: -lc }"
  70 #endif
  71
  72 #ifndef STARTFILE_LINUX_SPEC
  73 #define STARTFILE_LINUX_SPEC "\
  74 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
  75 %{mnewlib: ecrti.o%s} \
  76 %{!mnewlib: crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
  77 #endif
  78
  79 #ifndef ENDFILE_LINUX_SPEC
  80 #define ENDFILE_LINUX_SPEC "\
  81 %{mnewlib: ecrtn.o%s} \
  82 %{!mnewlib: %{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s}"
  83 #endif
  84
  85 #ifndef LINK_START_LINUX_SPEC
  86 #define LINK_START_LINUX_SPEC "-Ttext 0x10000"
  87 #endif
  88
  89 #ifndef LINK_OS_LINUX_SPEC
  90 #define LINK_OS_LINUX_SPEC ""
  91 #endif
  92
  93 #ifndef CPP_OS_LINUX_SPEC
  94 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
  95 %{!ansi: -Dunix -Dlinux } \
  96 -Asystem=unix -Asystem=linux"
  97 #endif
  98
  99 #ifndef CPP_OS_LINUX_SPEC
 100 #define CPP_OS_LINUX_SPEC ""
 101 #endif
 102
 103
 104 /* Define any extra SPECS that the compiler needs to generate.  */
 105 #undef  SUBTARGET_EXTRA_SPECS
 106 #define SUBTARGET_EXTRA_SPECS                                           \
 107   { "lib_linux",                LIB_LINUX_SPEC },                       \
 108   { "lib_default",              LIB_DEFAULT_SPEC },                     \
 109   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
 110   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
 111   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
 112   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
 113   { "link_shlib",               LINK_SHLIB_SPEC },                      \
 114   { "link_target",              LINK_TARGET_SPEC },                     \
 115   { "link_start",               LINK_START_SPEC },                      \
 116   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
 117   { "link_os",                  LINK_OS_SPEC },                         \
 118   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
 119   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
 120   { "cpp_endian_big",           CPP_ENDIAN_BIG_SPEC },                  \
 121   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
 122   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
 123
 124 #endif /* SOME_FUTURE_DAY */