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Annotation of gcc/config/m68k/ccur-GAS.h, revision 1.1.1.2

1.1       root        1: /* Definitions of target machine for GNU compiler.  Concurrent 68k version.
1.1.1.2 ! root        2:    Copyright (C) 1987, 1988, 1995 Free Software Foundation, Inc.
1.1       root        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
1.1.1.2 ! root       18: the Free Software Foundation, 59 Temple Place - Suite 330,
        !            19: Boston, MA 02111-1307, USA.  */
1.1       root       20: 
                     21: #ifndef MASSCOMP
                     22: #define MASSCOMP
                     23: #endif
                     24: 
                     25: #ifndef CONCURRENT
                     26: #define CONCURRENT
                     27: #endif
                     28: 
                     29: #ifndef __mc68000__
                     30: #define __mc68000__
                     31: #endif
                     32: 
                     33: #ifndef __mc68020__
                     34: #define __mc68020__
                     35: #endif
                     36: 
                     37: #define USE_GAS
                     38: #define MOVE_RATIO 100
                     39: 
                     40: #define SPACE_AFTER_L_OPTION
                     41: #define SWITCHES_NEED_SPACES " "
                     42: 
                     43: #define TARGET_DEFAULT 0407 /* See m68k.h.  7 means 68020 with 68881.  */
                     44: 
                     45: #include "m68k/m68k.h"
                     46: 
                     47: #define SIZE_TYPE "int"
                     48: 
                     49: /* for 68k machines this only needs to be TRUE for the 68000 */
                     50: 
                     51: #undef STRICT_ALIGNMENT     
                     52: #define STRICT_ALIGNMENT 0
                     53: 
                     54: /* Names to predefine in the preprocessor for this target machine.  */
                     55: #define CPP_PREDEFINES \
                     56:     "-Dmc68000 -Dmasscomp -DMASSCOMP -Dunix -DLANGUAGE_C -Dconcurrent -DCONCURRENT"
                     57: 
                     58: #undef TARGET_VERSION
                     59: #define TARGET_VERSION fprintf (stderr, " (68k, GNU GAS syntax)");
                     60: 
                     61: /* Discard internal local symbols beginning with 'L'. */
                     62: #define LINK_SPEC "-X"
                     63: 
                     64: /* Every structure or union's size must be a multiple of 4 bytes. */
                     65: #define STRUCTURE_SIZE_BOUNDARY 16 
                     66: 
                     67: /* No data type wants to be aligned rounder than this.  */
                     68: #undef BIGGEST_ALIGNMENT
                     69: #define BIGGEST_ALIGNMENT 32
                     70: 
                     71: /* Allocation boundary (in *bits*) for storing pointers in memory.  */
                     72: #undef POINTER_BOUNDARY
                     73: #define POINTER_BOUNDARY 32
                     74: 
                     75: /* Alignment of field after `int : 0' in a structure.  */
                     76: #undef EMPTY_FIELD_BOUNDARY
                     77: #define EMPTY_FIELD_BOUNDARY 32
                     78: 
1.1.1.2 ! root       79: /* Allocation boundary in bits for the code of a function */
        !            80: #undef  FUNCTION_BOUNDARY
        !            81: #define FUNCTION_BOUNDARY 32
1.1       root       82: 
                     83: /* Make strings long-word aligned so dhrystones will run faster. */
                     84: #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
                     85:    (TREE_CODE (EXP) == STRING_CST \
                     86:     && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
                     87: 
                     88: /* Make arrays of chars word-aligned for the same reasons.  */
                     89: #define DATA_ALIGNMENT(TYPE, ALIGN)            \
                     90:   (TREE_CODE (TYPE) == ARRAY_TYPE              \
                     91:    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode   \
                     92:    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
                     93: 
                     94: /* This is BSD, so it wants DBX format.  */
                     95: #define DBX_DEBUGGING_INFO
                     96: 
                     97: /* Override parts of m68k.h */
                     98: 
                     99: #undef CALL_USED_REGISTERS
                    100: #define CALL_USED_REGISTERS \
                    101:  {1, 1, 0, 0, 0, 0, 0, 0, \
                    102:   1, 1, 0, 0, 0, 0, 0, 1, \
                    103:   1, 1, 0, 0, 0, 0, 1, 1 }
                    104: 
                    105: #undef REG_ALLOC_ORDER
                    106: #define REG_ALLOC_ORDER \
                    107: {  0,  1,  2,  3,  4,  5,  6,  7,\
                    108:    8,  9, 10, 11, 12, 13, 14, 15, \
                    109:   16, 17, 22, 23, 18, 19, 20, 21 }
                    110: 
                    111: #undef ASM_FILE_START
                    112: #define ASM_FILE_START(FILE)   \
                    113:   fprintf (FILE, "#NO_APP\n.globl fltused\n");
                    114: 
                    115: #undef ASM_OUTPUT_ALIGN
                    116: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
                    117: { int _LOG = LOG;                       \
                    118:   if (_LOG == 1)                       \
                    119:     fprintf (FILE, "\t.even\n");       \
                    120:   else if (_LOG == 2)                   \
                    121:     fprintf (FILE, "\t.align 4\n");     \
                    122:   else if (_LOG != 0)                  \
                    123:     fprintf (FILE, "\t.align %d\n", _LOG);\
                    124: }
                    125: 
                    126: /* crt0.c should use the vax-bsd style of entry, with a dummy arg.  */
                    127: 
                    128: #define CRT0_DUMMIES bogus_fp,

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