gcc/config/alpha/freebsd.h

   1 /* Definitions for DEC Alpha/AXP running FreeBSD using the ELF format
   2    Copyright (C) 2000, 2002 Free Software Foundation, Inc.
   3    Contributed by David E. O'Brien <obrien@FreeBSD.org> and BSDi.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC 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 GNU CC 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 GNU CC; 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
  23 /* Provide a CPP_SPEC appropriate for FreeBSD/alpha.  Besides the dealing with
  24    the GCC option `-posix', and PIC issues as on all FreeBSD platforms, we must
  25    deal with the Alpha's FP issues.  */
  26
  27 #define TARGET_OS_CPP_BUILTINS()                \
  28   do                                            \
  29     {                                           \
  30       if (flag_pic)                             \
  31         {                                       \
  32           builtin_define ("__PIC__");           \
  33           builtin_define ("__pic__");           \
  34         }                                       \
  35     }                                           \
  36   while (0)
  37
  38 #undef  CPP_SPEC
  39 #define CPP_SPEC "%(cpp_subtarget) %{posix:-D_POSIX_SOURCE}"
  40
  41 #define LINK_SPEC "%{G*} %{relax:-relax}                                \
  42   %{p:%e`-p' not supported; use `-pg' and gprof(1)}                     \
  43   %{Wl,*:%*}                                                            \
  44   %{assert*} %{R*} %{rpath*} %{defsym*}                                 \
  45   %{shared:-Bshareable %{h*} %{soname*}}                                \
  46   %{symbolic:-Bsymbolic}                                                \
  47   %{!shared:                                                            \
  48     %{!static:                                                          \
  49       %{rdynamic:-export-dynamic}                                       \
  50       %{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}}      \
  51     %{static:-Bstatic}}"
  52
  53
  54 /************************[  Target stuff  ]***********************************/
  55
  56 /* Define the actual types of some ANSI-mandated types.
  57    Needs to agree with <machine/ansi.h>.  GCC defaults come from c-decl.c,
  58    c-common.c, and config/<arch>/<arch>.h.  */
  59
  60 /* alpha.h gets this wrong for FreeBSD.  We use the GCC defaults instead.  */
  61 #undef WCHAR_TYPE
  62
  63 #undef  WCHAR_TYPE_SIZE
  64 #define WCHAR_TYPE_SIZE 32
  65
  66 #undef  TARGET_VERSION
  67 #define TARGET_VERSION fprintf (stderr, " (FreeBSD/alpha ELF)");
  68
  69 #define TARGET_ELF      1
  70
  71 #undef  TARGET_DEFAULT
  72 #define TARGET_DEFAULT  (MASK_FP | MASK_FPREGS | MASK_GAS)
  73
  74 #undef HAS_INIT_SECTION
  75
  76 /* Show that we need a GP when profiling.  */
  77 #undef  TARGET_PROFILING_NEEDS_GP
  78 #define TARGET_PROFILING_NEEDS_GP 1
  79
  80 /* This is the char to use for continuation (in case we need to turn
  81    continuation back on).  */
  82
  83 #undef  DBX_CONTIN_CHAR
  84 #define DBX_CONTIN_CHAR '?'
  85
  86 /* Don't default to pcc-struct-return, we want to retain compatibility with
  87    older FreeBSD releases AND pcc-struct-return may not be reentrant.  */
  88
  89 #undef  DEFAULT_PCC_STRUCT_RETURN
  90 #define DEFAULT_PCC_STRUCT_RETURN 0