Subversion Repositories openrisc_2011-10-31

/* Definitions of target machine for GNU compiler, for HPs using the

   64bit runtime model.

   Copyright (C) 1999, 2000, 2003, 2004, 2007 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 3, 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 COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

/* 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))

/* In the PA architecture, it is not possible to directly move data

   between GENERAL_REGS and FP_REGS.  On the 32-bit port, we use the

   location at SP-16 because PA 1.X only supports 5-bit immediates for

   floating-point loads and stores.  We don't expose this location in

   the RTL to avoid scheduling related problems.  For example, the

   store and load could be separated by a call to a pure or const

   function which has no frame and this function might also use SP-16.

   We have 14-bit immediates on the 64-bit port, so we use secondary

   memory for the copies.  */

#define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \

  (MAYBE_FP_REG_CLASS_P (CLASS1) != FP_REG_CLASS_P (CLASS2)             \

   || MAYBE_FP_REG_CLASS_P (CLASS2) != FP_REG_CLASS_P (CLASS1))