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Annotation of gcc/config/3b1g.h, revision 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.h"
        !            21: 
        !            22: /* See m68k.h.  0 means 68000 with no 68881.  */
        !            23: #define TARGET_DEFAULT 0
        !            24: 
        !            25: /* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
        !            26:    This will control the use of inline 68881 insns in certain macros.
        !            27:    Also inform the program which CPU this is for.  */
        !            28: #define CPP_SPEC "%{m68881:-D__HAVE_68881__} \
        !            29: %{!ansi:%{m68020:-Dmc68020}%{mc68020:-Dmc68020}%{!mc68020:%{!m68020:-Dmc68010}}}"
        !            30: 
        !            31: /* -m68020 requires special flags to the assembler.  */
        !            32: #define ASM_SPEC \
        !            33:  "%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!m68020:-mc68010}}"
        !            34: 
        !            35: /* Names to predefine in the preprocessor for this target machine.  */
        !            36: #define CPP_PREDEFINES "-Dmc68000 -Dmc68k -Dunix -Dunixpc"
        !            37: 
        !            38: /* This is (not really) BSD, so (but) it wants DBX format.  */
        !            39: #define DBX_DEBUGGING_INFO
        !            40: 
        !            41: /* Brain damage. */
        !            42: #define SCCS_DIRECTIVE
        !            43: 
        !            44: /* Specify how to pad function arguments.
        !            45:    Value should be `upward', `downward' or `none'.
        !            46:    Same as the default, except no padding for large or variable-size args.  */
        !            47: #define FUNCTION_ARG_PADDING(MODE, TYPE)                               \
        !            48:   (((MODE) == BLKmode                                                  \
        !            49:     ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE))  == INTEGER_CST          \
        !            50:        && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT)    \
        !            51:     : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY)                         \
        !            52:    ? downward : none)
        !            53: 
        !            54: /* Override part of the obstack macros.  */
        !            55: #define __PTR_TO_INT(P) ((int)(P))
        !            56: #define __INT_TO_PTR(P) ((char *)(P))
        !            57: 
        !            58: /* Every structure or union's size must be a multiple of 2 bytes.  */
        !            59: #define STRUCTURE_SIZE_BOUNDARY 16
        !            60: 
        !            61: /* Generate calls to memcpy, memcmp and memset.  */
        !            62: #define TARGET_MEM_FUNCTIONS
        !            63: 

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