gcc/config/alpha/netbsd.h

   1 /* Definitions of target machine for GNU compiler,
   2    for Alpha NetBSD systems.
   3    Copyright (C) 1998, 2002, 2003, 2004, 2005, 2007, 2011
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC 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 3, or (at your option)
  11 any later version.
  12
  13 GCC 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 GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #undef TARGET_DEFAULT
  23 #define TARGET_DEFAULT (MASK_FPREGS | MASK_GAS)
  24
  25 #define TARGET_OS_CPP_BUILTINS()                \
  26     do {                                        \
  27         NETBSD_OS_CPP_BUILTINS_ELF();           \
  28     } while (0)
  29
  30
  31 /* NetBSD doesn't use the LANGUAGE* built-ins.  */
  32 #undef SUBTARGET_LANGUAGE_CPP_BUILTINS
  33 #define SUBTARGET_LANGUAGE_CPP_BUILTINS()       /* nothing */
  34
  35
  36 /* Show that we need a GP when profiling.  */
  37 #undef TARGET_PROFILING_NEEDS_GP
  38 #define TARGET_PROFILING_NEEDS_GP 1
  39
  40
  41 /* Provide a CPP_SPEC appropriate for NetBSD/alpha.  We use
  42    this to pull in CPP specs that all NetBSD configurations need.  */
  43
  44 #undef CPP_SPEC
  45 #define CPP_SPEC NETBSD_CPP_SPEC
  46
  47 #undef EXTRA_SPECS
  48 #define EXTRA_SPECS                     \
  49   { "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \
  50   { "netbsd_entry_point", NETBSD_ENTRY_POINT }, \
  51   { "netbsd_endfile_spec", NETBSD_ENDFILE_SPEC },
  52
  53
  54 /* Provide a LINK_SPEC appropriate for a NetBSD/alpha ELF target.  */
  55
  56 #undef LINK_SPEC
  57 #define LINK_SPEC \
  58   "%{G*} %{relax:-relax} \
  59    %{O*:-O3} %{!O*:-O1} \
  60    %(netbsd_link_spec)"
  61
  62 #define NETBSD_ENTRY_POINT "__start"
  63
  64
  65 /* Provide an ENDFILE_SPEC appropriate for NetBSD/alpha ELF.  Here we
  66    add crtend.o, which provides part of the support for getting
  67    C++ file-scope static objects deconstructed after exiting "main".
  68
  69    We also need to handle the GCC option `-ffast-math'.  */
  70
  71 #undef ENDFILE_SPEC
  72 #define ENDFILE_SPEC            \
  73   "%{Ofast|ffast-math|funsafe-math-optimizations:crtfm%O%s} \
  74    %(netbsd_endfile_spec)"
  75
  76 #define HAVE_ENABLE_EXECUTE_STACK