gcc/config/m32r/linux.h

   1 /* Definitions for Renesas M32R running Linux-based GNU systems using ELF.
   2    Copyright (C) 2003, 2004, 2006, 2007 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 3, 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 COPYING3.  If not see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #define LINUX_DEFAULT_ELF
  21
  22 /* A lie, I guess, but the general idea behind linux/ELF is that we are
  23    supposed to be outputting something that will assemble under SVr4.
  24    This gets us pretty close.  */
  25
  26 #define HANDLE_SYSV_PRAGMA
  27
  28 #undef  HANDLE_PRAGMA_PACK
  29
  30 #undef  TARGET_VERSION
  31 #define TARGET_VERSION fprintf (stderr, " (M32R GNU/Linux with ELF)");
  32
  33 #undef  SIZE_TYPE
  34 #define SIZE_TYPE "unsigned int"
  35
  36 #undef  PTRDIFF_TYPE
  37 #define PTRDIFF_TYPE "int"
  38
  39 #undef  WCHAR_TYPE
  40 #define WCHAR_TYPE "long int"
  41
  42 #undef  WCHAR_TYPE_SIZE
  43 #define WCHAR_TYPE_SIZE BITS_PER_WORD
  44
  45 /* Provide a LINK_SPEC appropriate for Linux.  Here we provide support
  46    for the special GCC options -static and -shared, which allow us to
  47    link things in one of these three modes by applying the appropriate
  48    combinations of options at link-time. We like to support here for
  49    as many of the other GNU linker options as possible. But I don't
  50    have the time to search for those flags. I am sure how to add
  51    support for -soname shared_object_name. H.J.
  52
  53    I took out %{v:%{!V:-V}}. It is too much :-(. They can use
  54    -Wl,-V.
  55
  56    When the -shared link option is used a final link is not being
  57    done.  */
  58
  59 /* If ELF is the default format, we should not use /lib/elf.  */
  60
  61 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
  62
  63 #undef  LINK_SPEC
  64 #if TARGET_LITTLE_ENDIAN
  65 #define LINK_SPEC "%(link_cpu) -m m32rlelf_linux %{shared:-shared} \
  66   %{!shared: \
  67     %{!ibcs: \
  68       %{!static: \
  69         %{rdynamic:-export-dynamic} \
  70         %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
  71         %{static:-static}}}"
  72 #else
  73 #define LINK_SPEC "%(link_cpu) -m m32relf_linux %{shared:-shared} \
  74   %{!shared: \
  75     %{!ibcs: \
  76       %{!static: \
  77         %{rdynamic:-export-dynamic} \
  78         %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
  79         %{static:-static}}}"
  80 #endif
  81
  82 #undef  LIB_SPEC
  83 #define LIB_SPEC \
  84   "%{pthread:-lpthread} \
  85    %{shared: -lc} \
  86    %{!shared: \
  87        %{mieee-fp:-lieee} \
  88        %{profile:-lc_p} %{!profile: -lc}}"
  89
  90 #undef  STARTFILE_SPEC
  91 #if defined HAVE_LD_PIE
  92 #define STARTFILE_SPEC \
  93   "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
  94    crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  95 #else
  96 #define STARTFILE_SPEC \
  97   "%{!shared: \
  98      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
  99    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
 100 #endif
 101
 102 #undef  ENDFILE_SPEC
 103 #define ENDFILE_SPEC \
 104   "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
 105
 106 #undef  SUBTARGET_CPP_SPEC
 107 #define SUBTARGET_CPP_SPEC "\
 108    %{posix:-D_POSIX_SOURCE} \
 109    %{pthread:-D_REENTRANT -D_PTHREADS} \
 110 "
 111
 112 #define TARGET_OS_CPP_BUILTINS() LINUX_TARGET_OS_CPP_BUILTINS()
 113
 114 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack