gcc/config/i370/linux.h

   1 /* Definitions of target machine for GNU compiler.  System/370 version.
   2    Copyright (C) 1989, 1993, 1995, 1996, 1997, 2003
   3    Free Software Foundation, Inc.
   4    Contributed by Jan Stein (jan@cd.chalmers.se).
   5    Modified for Linux/390 by Linas Vepstas (linas@linas.org)
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 2, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, USA.  */
  23
  24
  25 #define TARGET_VERSION fprintf (stderr, " (i370 GNU/Linux with ELF)");
  26
  27 /* Specify that we're generating code for a Linux port to 370 */
  28
  29 #define TARGET_ELF_ABI
  30
  31 /* Target OS preprocessor built-ins.  */
  32 #define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
  33
  34 /* Options for this target machine.  */
  35
  36 #define LIBGCC_SPEC "libgcc.a%s"
  37
  38 #ifdef SOME_FUTURE_DAY
  39
  40 #define CPP_SPEC "%{posix: -D_POSIX_SOURCE} %(cpp_sysv) %(cpp_endian_big) \
  41 %{mcall-linux: %(cpp_os_linux) } \
  42 %{!mcall-linux: %(cpp_os_default) }"
  43
  44 #define LIB_SPEC "\
  45 %{mcall-linux: %(lib_linux) } \
  46 %{!mcall-linux:%(lib_default) }"
  47
  48 #define STARTFILE_SPEC "\
  49 %{mcall-linux: %(startfile_linux) } \
  50 %{!mcall-linux: %(startfile_default) }"
  51
  52 #define ENDFILE_SPEC "\
  53 %{mcall-linux: %(endfile_linux) } \
  54 %{!mcall-linux: %(endfile_default) }"
  55
  56 /* GNU/Linux support.  */
  57 #ifndef LIB_LINUX_SPEC
  58 #define LIB_LINUX_SPEC "%{mnewlib: --start-group -llinux -lc --end-group } %{!mnewlib: -lc }"
  59 #endif
  60
  61 #ifndef STARTFILE_LINUX_SPEC
  62 #define STARTFILE_LINUX_SPEC "\
  63 %{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
  64 %{mnewlib: ecrti.o%s} \
  65 %{!mnewlib: crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
  66 #endif
  67
  68 #ifndef ENDFILE_LINUX_SPEC
  69 #define ENDFILE_LINUX_SPEC "\
  70 %{mnewlib: ecrtn.o%s} \
  71 %{!mnewlib: %{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s}"
  72 #endif
  73
  74 #ifndef LINK_START_LINUX_SPEC
  75 #define LINK_START_LINUX_SPEC "-Ttext 0x10000"
  76 #endif
  77
  78 #ifndef LINK_OS_LINUX_SPEC
  79 #define LINK_OS_LINUX_SPEC ""
  80 #endif
  81
  82 #ifndef CPP_OS_LINUX_SPEC
  83 #define CPP_OS_LINUX_SPEC "-D__unix__ -D__gnu_linux__ -D__linux__ \
  84 %{!ansi: -Dunix -Dlinux } \
  85 -Asystem=unix -Asystem=linux"
  86 #endif
  87
  88 #ifndef CPP_OS_LINUX_SPEC
  89 #define CPP_OS_LINUX_SPEC ""
  90 #endif
  91
  92
  93 /* Define any extra SPECS that the compiler needs to generate.  */
  94 #undef  SUBTARGET_EXTRA_SPECS
  95 #define SUBTARGET_EXTRA_SPECS                                           \
  96   { "lib_linux",                LIB_LINUX_SPEC },                       \
  97   { "lib_default",              LIB_DEFAULT_SPEC },                     \
  98   { "startfile_linux",          STARTFILE_LINUX_SPEC },                 \
  99   { "startfile_default",        STARTFILE_DEFAULT_SPEC },               \
 100   { "endfile_linux",            ENDFILE_LINUX_SPEC },                   \
 101   { "endfile_default",          ENDFILE_DEFAULT_SPEC },                 \
 102   { "link_shlib",               LINK_SHLIB_SPEC },                      \
 103   { "link_target",              LINK_TARGET_SPEC },                     \
 104   { "link_start",               LINK_START_SPEC },                      \
 105   { "link_start_linux",         LINK_START_LINUX_SPEC },                \
 106   { "link_os",                  LINK_OS_SPEC },                         \
 107   { "link_os_linux",            LINK_OS_LINUX_SPEC },                   \
 108   { "link_os_default",          LINK_OS_DEFAULT_SPEC },                 \
 109   { "cpp_endian_big",           CPP_ENDIAN_BIG_SPEC },                  \
 110   { "cpp_os_linux",             CPP_OS_LINUX_SPEC },                    \
 111   { "cpp_os_default",           CPP_OS_DEFAULT_SPEC },
 112
 113 #endif /* SOME_FUTURE_DAY */