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 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #undef TARGET_DEFAULT
  23 #define TARGET_DEFAULT (MASK_FP | 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_SUBTARGET_SPEC appropriate for NetBSD/alpha.  We use
  42    this to pull in CPP specs that all NetBSD configurations need.  */
  43
  44 #undef CPP_SUBTARGET_SPEC
  45 #define CPP_SUBTARGET_SPEC NETBSD_CPP_SPEC
  46
  47 #undef SUBTARGET_EXTRA_SPECS
  48 #define SUBTARGET_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   "%{ffast-math|funsafe-math-optimizations:crtfm%O%s} \
  74    %(netbsd_endfile_spec)"
  75
  76
  77 /* Attempt to enable execute permissions on the stack.  */
  78
  79 #define ENABLE_EXECUTE_STACK NETBSD_ENABLE_EXECUTE_STACK
  80
  81
  82 #undef TARGET_VERSION
  83 #define TARGET_VERSION fprintf (stderr, " (NetBSD/alpha ELF)");