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Annotation of gcc/config/tm-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 1, 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 "tm-m68k.h"
                     21: 
                     22: /* See tm-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, size)                               \
                     48:   (((mode) == BLKmode                                                  \
                     49:     ? (GET_CODE (size) == CONST_INT                                    \
                     50:        && INTVAL (size) < 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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