gcc/config/alpha/osf5.h

   1 /* Definitions of target machine for GNU compiler, for DEC Alpha on Tru64 5.
   2    Copyright (C) 2000, 2001 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
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    GCC is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public 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
  18    the Free Software Foundation, 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 /* Tru64 5.1 uses IEEE QUAD format.  */
  22 /* ??? However, since there is no support for VAX H_floating, we must
  23    drop back to a 64-bit long double to avoid a crash looking for the
  24    format associated with TFmode.  */
  25 #undef LONG_DOUBLE_TYPE_SIZE
  26 #define LONG_DOUBLE_TYPE_SIZE  (TARGET_FLOAT_VAX ? 64 : 128)
  27
  28 /* In Tru64 UNIX V5.1, Compaq introduced a new assembler
  29    (/usr/lib/cmplrs/cc/adu) which currently (versions between 3.04.29 and
  30    3.04.32) breaks mips-tfile.  Passing the undocumented -oldas flag reverts
  31    to using the old assembler (/usr/lib/cmplrs/cc/as[01]).
  32
  33    The V5.0 and V5.0A assemblers silently ignore -oldas, so it can be
  34    specified here.
  35
  36    It is clearly not desirable to depend on this undocumented flag, and
  37    Compaq wants -oldas to go away soon, but until they have released a
  38    new adu that works with mips-tfile, this is the only option.
  39
  40    In some versions of the DTK, the assembler driver invokes ld after
  41    assembly.  This has been fixed in current versions, but adding -c
  42    works as expected for all versions.  */
  43
  44 #undef ASM_OLDAS_SPEC
  45 #define ASM_OLDAS_SPEC "-oldas -c"
  46
  47 /* The linker appears to perform invalid code optimizations that result
  48    in the ldgp emitted for the exception_receiver pattern being incorrectly
  49    linked.  */
  50 #undef TARGET_LD_BUGGY_LDGP
  51 #define TARGET_LD_BUGGY_LDGP 1
  52
  53 /* Tru64 v5.1 has the float and long double forms of math functions.  */
  54 #undef TARGET_C99_FUNCTIONS
  55 #define TARGET_C99_FUNCTIONS  1
  56