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efd59e3f MK |
1 | /* Target-dependent code for FreeBSD/Alpha. |
2 | Copyright 2001 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GDB. | |
5 | ||
6 | This program 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 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program 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 this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "value.h" | |
23 | ||
24 | int | |
25 | alphafbsd_use_struct_convention (int gcc_p, struct type *type) | |
26 | { | |
27 | enum type_code code; | |
28 | int i; | |
29 | ||
30 | /* All aggregate types that won't fit in a register must be returned | |
31 | in memory. */ | |
32 | if (TYPE_LENGTH (type) > REGISTER_SIZE) | |
33 | return 1; | |
34 | ||
35 | /* The only aggregate types that can be returned in a register are | |
36 | structs and unions. Arrays must be returned in memory. */ | |
37 | code = TYPE_CODE (type); | |
38 | if (code != TYPE_CODE_STRUCT && code != TYPE_CODE_UNION) | |
39 | return 1; | |
40 | ||
41 | /* We need to check if this struct/union is "integer" like. For | |
42 | this to be true, the offset of each adressable subfield must be | |
43 | zero. Note that bit fields are not addressable. */ | |
44 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
45 | { | |
46 | /* If the field bitsize is non-zero, it isn't adressable. */ | |
47 | if (TYPE_FIELD_BITPOS (type, i) != 0 | |
48 | && TYPE_FIELD_BITSIZE (type, i) == 0) | |
49 | return 1; | |
50 | } | |
51 | ||
52 | return 0; | |
53 | } |