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authorMark Kettenis <kettenis@gnu.org>2001-01-25 18:41:23 +0000
committerMark Kettenis <kettenis@gnu.org>2001-01-25 18:41:23 +0000
commit10339ed1267a70878876b58440075d7d3934e4de (patch)
tree465118568cce005f9d28437d57685996e8de12e1 /gdb/alphafbsd-tdep.c
parentfc201999b8034c85897344d072edbaa0ed208463 (diff)
downloadgdb-10339ed1267a70878876b58440075d7d3934e4de.tar.gz
* config/alpha/tm-fbsd.h: Update copyright.
(USE_STRUCT_CONVENTION): Define in terms of alphabsd_use_struct_convention. * config/alpha/fbsd.mt (TDEPFILES): Add alphafbsd-tdep.c. * alphafbsd-tdep.c: New file.
Diffstat (limited to 'gdb/alphafbsd-tdep.c')
-rw-r--r--gdb/alphafbsd-tdep.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/gdb/alphafbsd-tdep.c b/gdb/alphafbsd-tdep.c
new file mode 100644
index 00000000000..e2d47491067
--- /dev/null
+++ b/gdb/alphafbsd-tdep.c
@@ -0,0 +1,53 @@
+/* Target-dependent code for FreeBSD/Alpha.
+ Copyright 2001 Free Software Foundation, Inc.
+
+ This file is part of GDB.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include "defs.h"
+#include "value.h"
+
+int
+alphafbsd_use_struct_convention (int gcc_p, struct type *type)
+{
+ enum type_code code;
+ int i;
+
+ /* All aggregate types that won't fit in a register must be returned
+ in memory. */
+ if (TYPE_LENGTH (type) > REGISTER_SIZE)
+ return 1;
+
+ /* The only aggregate types that can be returned in a register are
+ structs and unions. Arrays must be returned in memory. */
+ code = TYPE_CODE (type);
+ if (code != TYPE_CODE_STRUCT && code != TYPE_CODE_UNION)
+ return 1;
+
+ /* We need to check if this struct/union is "integer" like. For
+ this to be true, the offset of each adressable subfield must be
+ zero. Note that bit fields are not addressable. */
+ for (i = 0; i < TYPE_NFIELDS (type); i++)
+ {
+ /* If the field bitsize is non-zero, it isn't adressable. */
+ if (TYPE_FIELD_BITPOS (type, i) != 0
+ && TYPE_FIELD_BITSIZE (type, i) == 0)
+ return 1;
+ }
+
+ return 0;
+}