Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 93 insertions, 0 deletions

diff --git a/gdb/symm-tdep.c b/gdb/symm-tdep.c
new file mode 100644
index 0000000..aaf73e9
--- /dev/null
+++ b/gdb/symm-tdep.c
@@ -0,0 +1,93 @@
+/* Sequent Symmetry target interface, for GDB.
+   Copyright (C) 1986, 1987, 1989, 1991, 1994 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.  */
+
+/* many 387-specific items of use taken from i386-dep.c */
+
+#include "defs.h"
+#include "frame.h"
+#include "inferior.h"
+#include "symtab.h"
+
+#include <signal.h>
+#include <sys/param.h>
+#include <sys/user.h>
+#include <sys/dir.h>
+#include <sys/ioctl.h>
+#include "gdb_stat.h"
+#include "gdbcore.h"
+#include <fcntl.h>
+
+void
+symmetry_extract_return_value(type, regbuf, valbuf)
+     struct type *type;
+     char *regbuf;
+     char *valbuf;
+{
+  union { 
+    double	d; 
+    int	l[2]; 
+  } xd; 
+  struct minimal_symbol *msymbol;
+  float f;
+
+  if (TYPE_CODE_FLT == TYPE_CODE(type)) { 
+    msymbol = lookup_minimal_symbol ("1167_flt", NULL, NULL);
+    if (msymbol != NULL) {
+      /* found "1167_flt" means 1167, %fp2-%fp3 */ 
+      /* float & double; 19= %fp2, 20= %fp3 */
+      /* no single precision on 1167 */
+      xd.l[1] = *((int *)&regbuf[REGISTER_BYTE(19)]);
+      xd.l[0] = *((int *)&regbuf[REGISTER_BYTE(20)]);
+      switch (TYPE_LENGTH(type)) {
+      case 4:
+	/* FIXME: broken for cross-debugging.  */
+	f = (float) xd.d;
+	memcpy (valbuf, &f, TYPE_LENGTH(type));
+	break;
+      case 8:
+	/* FIXME: broken for cross-debugging.  */
+	memcpy (valbuf, &xd.d, TYPE_LENGTH(type)); 
+	break;
+      default:
+	error("Unknown floating point size");
+	break;
+      }
+    } else { 
+      /* 387 %st(0), gcc uses this */ 
+      i387_to_double(((int *)&regbuf[REGISTER_BYTE(3)]),
+		     &xd.d); 
+      switch (TYPE_LENGTH(type)) {
+      case 4:			/* float */
+	f = (float) xd.d;
+	/* FIXME: broken for cross-debugging.  */
+	memcpy (valbuf, &f, 4); 
+	break;
+      case 8:			/* double */
+	/* FIXME: broken for cross-debugging.  */
+	memcpy (valbuf, &xd.d, 8);
+	break;
+      default:
+	error("Unknown floating point size");
+	break;
+      }
+    }
+  } else {
+    memcpy (valbuf, regbuf, TYPE_LENGTH (type)); 
+  }
+}