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Annotation of GNUtools/cc/config/m68k/3b1g.h, revision 1.1.1.1

1.1       root        1: /* Definitions of target machine for GNU compiler, for a 3b1 using GAS.
                      2:    Copyright (C) 1987, 1988 Free Software Foundation, Inc.
                      3: 
                      4: This file is part of GNU CC.
                      5: 
                      6: GNU CC 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: GNU CC 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 GNU CC; see the file COPYING.  If not, write to
                     18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
                     19: 
                     20: #include "m68k/m68k.h"
                     21: 
                     22: /* See m68k.h.  0 means 68000 with no 68881.  */
                     23: #define TARGET_DEFAULT 0
                     24: 
                     25: /* Don't try using XFmode.  */
                     26: #undef LONG_DOUBLE_TYPE_SIZE
                     27: #define LONG_DOUBLE_TYPE_SIZE 64
                     28: 
                     29: /* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
                     30:    This will control the use of inline 68881 insns in certain macros.
                     31:    Also inform the program which CPU this is for.  */
                     32: #define CPP_SPEC "%{m68881:-D__HAVE_68881__} \
                     33: %{!ansi:%{m68020:-Dmc68020}%{mc68020:-Dmc68020}%{!mc68020:%{!m68020:-Dmc68010}}}"
                     34: 
                     35: /* -m68020 requires special flags to the assembler.  */
                     36: #define ASM_SPEC \
                     37:  "%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!m68020:-mc68010}}"
                     38: 
                     39: /* Names to predefine in the preprocessor for this target machine.  */
                     40: #define CPP_PREDEFINES "-Dmc68000 -Dmc68k -Dunix -Dunixpc -Asystem(unix)  -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
                     41: 
                     42: /* This is (not really) BSD, so (but) it wants DBX format.  */
                     43: #define DBX_DEBUGGING_INFO
                     44: 
                     45: /* Brain damage. */
                     46: #define SCCS_DIRECTIVE
                     47: 
                     48: /* Specify how to pad function arguments.
                     49:    Value should be `upward', `downward' or `none'.
                     50:    Same as the default, except no padding for large or variable-size args.  */
                     51: #define FUNCTION_ARG_PADDING(MODE, TYPE)                               \
                     52:   (((MODE) == BLKmode                                                  \
                     53:     ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE))  == INTEGER_CST          \
                     54:        && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT)    \
                     55:     : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY)                         \
                     56:    ? downward : none)
                     57: 
                     58: /* Override part of the obstack macros.  */
                     59: #define __PTR_TO_INT(P) ((int)(P))
                     60: #define __INT_TO_PTR(P) ((char *)(P))
                     61: 
                     62: /* Every structure or union's size must be a multiple of 2 bytes.  */
                     63: #define STRUCTURE_SIZE_BOUNDARY 16
                     64: 
                     65: /* Generate calls to memcpy, memcmp and memset.  */
                     66: #define TARGET_MEM_FUNCTIONS
                     67: 

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