llvm-gcc-4.2/gcc/config/pa/pa-64.h

/* Definitions of target machine for GNU compiler, for HPs using the
   64bit runtime model.
   Copyright (C) 1999, 2000, 2003, 2004 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to
the Free Software Foundation, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  */

/* The default sizes for basic datatypes provided by GCC are not
   correct for the PA64 runtime architecture.

   In PA64, basic types have the following sizes

     char	1 byte
     short	2 bytes
     int	4 bytes
     long	8 bytes
     long long	8 bytes
     pointer	8 bytes
     float	4 bytes
     double	8 bytes
     long double 16 bytes
     size_t	8 bytes
     ptrdiff_t	8 bytes
     wchar	4 bytes
     
  Make GCC agree with types.h.  */
#undef SIZE_TYPE
#define SIZE_TYPE "long unsigned int"

#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "long int"

#undef WCHAR_TYPE
#define WCHAR_TYPE "unsigned int"

#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32

/* If it is not listed here, then the default selected by GCC is OK.  */
#undef SHORT_TYPE_SIZE
#define SHORT_TYPE_SIZE 16
#undef INT_TYPE_SIZE
#define INT_TYPE_SIZE 32
#undef LONG_TYPE_SIZE
#define LONG_TYPE_SIZE 64
#undef LONG_LONG_TYPE_SIZE
#define LONG_LONG_TYPE_SIZE 64
#undef FLOAT_TYPE_SIZE
#define FLOAT_TYPE_SIZE 32
#undef DOUBLE_TYPE_SIZE
#define DOUBLE_TYPE_SIZE 64
#undef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE 128

/* Temporary until we figure out what to do with those *(&@$ 32bit
   relocs which appear in stabs.  */
#undef DBX_DEBUGGING_INFO

/* ?!? This needs to be made compile-time selectable.

   The PA64 runtime model has arguments that grow to higher addresses
   (like most other targets).  The older runtime model has arguments
   that grow to lower addresses.  What fun.  */
#undef ARGS_GROW_DOWNWARD

/* If defined, a C expression which determines whether the default
   implementation of va_arg will attempt to pad down before reading the
   next argument, if that argument is smaller than its aligned space as
   controlled by PARM_BOUNDARY.  If this macro is not defined, all such
   arguments are padded down when BYTES_BIG_ENDIAN is true.  We don't
   want aggregates padded down.  */

#define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))