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Annotation of gcc/config/m68k/3b1g.h, revision 1.1.1.3

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
1.1.1.3 ! root       18: the Free Software Foundation, 59 Temple Place - Suite 330,
        !            19: Boston, MA 02111-1307, USA.  */
1.1       root       20: 
                     21: #include "m68k/m68k.h"
                     22: 
                     23: /* See m68k.h.  0 means 68000 with no 68881.  */
                     24: #define TARGET_DEFAULT 0
                     25: 
                     26: /* Don't try using XFmode.  */
                     27: #undef LONG_DOUBLE_TYPE_SIZE
                     28: #define LONG_DOUBLE_TYPE_SIZE 64
                     29: 
                     30: /* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
                     31:    This will control the use of inline 68881 insns in certain macros.
                     32:    Also inform the program which CPU this is for.  */
                     33: #define CPP_SPEC "%{m68881:-D__HAVE_68881__} \
                     34: %{!ansi:%{m68020:-Dmc68020}%{mc68020:-Dmc68020}%{!mc68020:%{!m68020:-Dmc68010}}}"
                     35: 
                     36: /* -m68020 requires special flags to the assembler.  */
                     37: #define ASM_SPEC \
                     38:  "%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!m68020:-mc68010}}"
                     39: 
                     40: /* Names to predefine in the preprocessor for this target machine.  */
1.1.1.2   root       41: #define CPP_PREDEFINES "-Dmc68000 -Dmc68k -Dunix -Dunixpc -Asystem(unix)  -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
1.1       root       42: 
                     43: /* This is (not really) BSD, so (but) it wants DBX format.  */
                     44: #define DBX_DEBUGGING_INFO
                     45: 
                     46: /* Brain damage. */
                     47: #define SCCS_DIRECTIVE
                     48: 
                     49: /* Specify how to pad function arguments.
                     50:    Value should be `upward', `downward' or `none'.
                     51:    Same as the default, except no padding for large or variable-size args.  */
                     52: #define FUNCTION_ARG_PADDING(MODE, TYPE)                               \
                     53:   (((MODE) == BLKmode                                                  \
                     54:     ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE))  == INTEGER_CST          \
                     55:        && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT)    \
                     56:     : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY)                         \
                     57:    ? downward : none)
                     58: 
                     59: /* Every structure or union's size must be a multiple of 2 bytes.  */
                     60: #define STRUCTURE_SIZE_BOUNDARY 16
                     61: 
                     62: /* Generate calls to memcpy, memcmp and memset.  */
                     63: #define TARGET_MEM_FUNCTIONS
                     64: 

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