gcc/config/m32r/linux.h

   1 /* Definitions for Renesas M32R running Linux-based GNU systems using ELF.
   2    Copyright (C) 2003, 2004 Free Software Foundation, Inc.
   3
   4    This file is part of GCC.
   5
   6    GCC is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published
   8    by the Free Software Foundation; either version 2, or (at your
   9    option) any later version.
  10
  11    GCC is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GCC; see the file COPYING.  If not, write to the
  18    Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19    MA 02111-1307, USA.  */
  20
  21 #define LINUX_DEFAULT_ELF
  22
  23 /* A lie, I guess, but the general idea behind linux/ELF is that we are
  24    supposed to be outputting something that will assemble under SVr4.
  25    This gets us pretty close.  */
  26
  27 #define HANDLE_SYSV_PRAGMA
  28
  29 #undef  HANDLE_PRAGMA_PACK
  30
  31 #undef  TARGET_VERSION
  32 #define TARGET_VERSION fprintf (stderr, " (M32R GNU/Linux with ELF)");
  33
  34 #undef  SIZE_TYPE
  35 #define SIZE_TYPE "unsigned int"
  36
  37 #undef  PTRDIFF_TYPE
  38 #define PTRDIFF_TYPE "int"
  39
  40 #undef  WCHAR_TYPE
  41 #define WCHAR_TYPE "long int"
  42
  43 #undef  WCHAR_TYPE_SIZE
  44 #define WCHAR_TYPE_SIZE BITS_PER_WORD
  45
  46 /* Provide a LINK_SPEC appropriate for Linux.  Here we provide support
  47    for the special GCC options -static and -shared, which allow us to
  48    link things in one of these three modes by applying the appropriate
  49    combinations of options at link-time. We like to support here for
  50    as many of the other GNU linker options as possible. But I don't
  51    have the time to search for those flags. I am sure how to add
  52    support for -soname shared_object_name. H.J.
  53
  54    I took out %{v:%{!V:-V}}. It is too much :-(. They can use
  55    -Wl,-V.
  56
  57    When the -shared link option is used a final link is not being
  58    done.  */
  59
  60 /* If ELF is the default format, we should not use /lib/elf.  */
  61
  62 #undef  LINK_SPEC
  63 #if TARGET_LITTLE_ENDIAN
  64 #define LINK_SPEC "%(link_cpu) -m m32rlelf_linux %{shared:-shared} \
  65   %{!shared: \
  66     %{!ibcs: \
  67       %{!static: \
  68         %{rdynamic:-export-dynamic} \
  69         %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
  70         %{static:-static}}}"
  71 #else
  72 #define LINK_SPEC "%(link_cpu) -m m32relf_linux %{shared:-shared} \
  73   %{!shared: \
  74     %{!ibcs: \
  75       %{!static: \
  76         %{rdynamic:-export-dynamic} \
  77         %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
  78         %{static:-static}}}"
  79 #endif
  80
  81 #undef  LIB_SPEC
  82 #define LIB_SPEC \
  83   "%{shared: -lc} \
  84     %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
  85     %{profile:-lc_p} %{!profile: -lc}}"
  86
  87 #undef  STARTFILE_SPEC
  88 #define STARTFILE_SPEC \
  89   "%{!shared: \
  90      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
  91    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  92
  93 #undef  ENDFILE_SPEC
  94 #define ENDFILE_SPEC \
  95   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
  96
  97 #undef  SUBTARGET_CPP_SPEC
  98 #define SUBTARGET_CPP_SPEC "\
  99    %{posix:-D_POSIX_SOURCE} \
 100    %{pthread:-D_REENTRANT -D_PTHREADS} \
 101 "
 102
 103 #define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
 104
 105 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack