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Annotation of gcc/config/a29kunix.h, revision 1.1.1.3

1.1       root        1: /* Definitions of target machine for GNU compiler, for AMD Am29000 CPU, Unix.
                      2:    Copyright (C) 1991 Free Software Foundation, Inc.
                      3:    Contributed by Richard Kenner ([email protected])
                      4: 
                      5: This file is part of GNU CC.
                      6: 
                      7: GNU CC is free software; you can redistribute it and/or modify
                      8: it under the terms of the GNU General Public License as published by
                      9: the Free Software Foundation; either version 2, or (at your option)
                     10: any later version.
                     11: 
                     12: GNU CC is distributed in the hope that it will be useful,
                     13: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     15: GNU General Public License for more details.
                     16: 
                     17: You should have received a copy of the GNU General Public License
                     18: along with GNU CC; see the file COPYING.  If not, write to
                     19: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
                     20: 
                     21: 
                     22: /* This is mostly the same as a29k.h, except that we define unix instead of
                     23:    EPI and define unix-style machine names.  */
                     24: 
                     25: #include "a29k.h"
                     26: 
                     27: /* Set our default target to be the 29050; that is the more interesting chip
                     28:    for Unix systems.  */
                     29: 
                     30: #undef TARGET_DEFAULT
                     31: #define TARGET_DEFAULT (1+2+8+64)
                     32: 
                     33: #undef CPP_PREDEFINES
                     34: #define CPP_PREDEFINES "-Dam29k -Da29k -Dam29000"
                     35: 
                     36: #undef CPP_SPEC
                     37: #define CPP_SPEC "%{!m29000:-Dam29050 -D__am29050__}"
                     38: 
1.1.1.3 ! root       39: /* Use a default linker configuration file.  */
1.1       root       40: #undef LINK_SPEC
1.1.1.3 ! root       41: #define LINK_SPEC "-T default.gld%s"
1.1       root       42: 
                     43: /* For some systems, it is best if double-word objects are aligned on a 
                     44:    doubleword boundary.  We want to maintain compatibility with MetaWare in
                     45:    a29k.h, but do not feel constrained to do so here.  */
                     46: 
                     47: #undef BIGGEST_ALIGNMENT
                     48: #define BIGGEST_ALIGNMENT 64
1.1.1.2   root       49: 
1.1.1.3 ! root       50: /* Add shared data as a kludge for now.  */
        !            51: 
        !            52: #undef ASM_FILE_START
        !            53: #define ASM_FILE_START(FILE)                                   \
        !            54: { char *p, *after_dir = main_input_filename;                   \
        !            55:   if (TARGET_29050)                                            \
        !            56:     fprintf (FILE, "\t.cputype 29050\n");                      \
        !            57:   for (p = main_input_filename; *p; p++)                       \
        !            58:     if (*p == '/')                                             \
        !            59:       after_dir = p + 1;                                       \
        !            60:   fprintf (FILE, "\t.file \"%s\"\n", after_dir);               \
        !            61:   if (flag_shared_data)                                                \
        !            62:     fprintf (FILE, "\t.sect .shdata,data\n");                  \
        !            63:   fprintf (FILE, "\t.sect .lit,lit\n");  }
        !            64: 
        !            65: /* Output before shared  data.  */
        !            66: 
        !            67: #define SHARED_SECTION_ASM_OP "\t.use .shdata"
        !            68: 
        !            69: /* If we want shared data, we have to turn off commons.  */
        !            70: 
        !            71: #define OVERRIDE_OPTIONS if (flag_shared_data) flag_no_common = 1;
        !            72: 
1.1.1.2   root       73: #if 0 /* This would be needed except that the 29k doesn't have strict
                     74:         alignment requirements.  */
                     75: 
                     76: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE)                              \
                     77:   (((TYPE) != 0)                                                       \
                     78:        ? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY)                          \
                     79:                ? PARM_BOUNDARY                                         \
                     80:                : TYPE_ALIGN(TYPE))                                     \
                     81:        : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY)                  \
                     82:                ? PARM_BOUNDARY                                         \
                     83:                : GET_MODE_ALIGNMENT(MODE)))
                     84: #endif

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