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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
commitefd59e3f325dfcf4a797d830abf78eac3cd4a78d (patch)
tree602a5cbbba137e555e5e2d31b5f9bcbb86254e85
parent388e1ff2e5c127e63d203dad82712f57638267e9 (diff)
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* 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.
-rw-r--r--gdb/ChangeLog8
-rw-r--r--gdb/alphafbsd-tdep.c53
-rw-r--r--gdb/config/alpha/fbsd.mt2
-rw-r--r--gdb/config/alpha/tm-fbsd.h8
4 files changed, 69 insertions, 2 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7a65255..0c6d524 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2001-01-25 Mark Kettenis <kettenis@gnu.org>
+
+ * 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.
+
2001-01-24 Fernando Nasser <fnasser@redhat.com>
* top.c (print_gdb_version): Update Copyright year.
diff --git a/gdb/alphafbsd-tdep.c b/gdb/alphafbsd-tdep.c
new file mode 100644
index 0000000..e2d4749
--- /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;
+}
diff --git a/gdb/config/alpha/fbsd.mt b/gdb/config/alpha/fbsd.mt
index 6d33977..48e54fa 100644
--- a/gdb/config/alpha/fbsd.mt
+++ b/gdb/config/alpha/fbsd.mt
@@ -1,3 +1,3 @@
# Target: FreeBSD/Alpha
-TDEPFILES= alpha-tdep.o
+TDEPFILES= alpha-tdep.o alphafbsd-tdep.o
TM_FILE= tm-fbsd.h
diff --git a/gdb/config/alpha/tm-fbsd.h b/gdb/config/alpha/tm-fbsd.h
index 73086e4..315712c 100644
--- a/gdb/config/alpha/tm-fbsd.h
+++ b/gdb/config/alpha/tm-fbsd.h
@@ -1,5 +1,5 @@
/* Target-dependent definitions for FreeBSD/Alpha.
- Copyright (C) 2000 Free Software Foundation, Inc.
+ Copyright 2000, 2001 Free Software Foundation, Inc.
This file is part of GDB.
@@ -23,6 +23,12 @@
#include "alpha/tm-alpha.h"
+/* FreeBSD uses the old gcc convention for struct returns. */
+
+#undef USE_STRUCT_CONVENTION
+#define USE_STRUCT_CONVENTION(gcc_p, type) \
+ alphafbsd_use_struct_convention (gcc_p, type)
+
/* Number of traps that happen between exec'ing the shell to run an
inferior, and when we finally get to the inferior code. The
default is right for FreeBSD. */