| 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 | } |