Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 111 insertions, 0 deletions

diff --git a/gdb/i387-tdep.c b/gdb/i387-tdep.c
new file mode 100644
index 0000000..869ab9a
--- /dev/null
+++ b/gdb/i387-tdep.c
@@ -0,0 +1,111 @@
+/* Intel 387 floating point stuff.
+   Copyright (C) 1988, 1989, 1991, 1998 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 "frame.h"
+#include "inferior.h"
+#include "language.h"
+#include "gdbcore.h"
+#include "floatformat.h"
+
+void i387_to_double PARAMS ((char *, char *));
+
+void double_to_i387 PARAMS ((char *, char *));
+
+/* FIXME:  Eliminate these routines when we have the time to change all
+   the callers.  */
+
+void
+i387_to_double (from, to)
+     char *from;
+     char *to;
+{
+  floatformat_to_double (&floatformat_i387_ext, from, (double *)to);
+}
+
+void
+double_to_i387 (from, to)
+     char *from;
+     char *to;
+{
+  floatformat_from_double (&floatformat_i387_ext, (double *)from, to);
+}
+
+void
+print_387_control_word (control)
+     unsigned int control;
+{
+  printf_unfiltered ("control %s: ", local_hex_string(control));
+  printf_unfiltered ("compute to ");
+  switch ((control >> 8) & 3) 
+    {
+    case 0: printf_unfiltered ("24 bits; "); break;
+    case 1: printf_unfiltered ("(bad); "); break;
+    case 2: printf_unfiltered ("53 bits; "); break;
+    case 3: printf_unfiltered ("64 bits; "); break;
+    }
+  printf_unfiltered ("round ");
+  switch ((control >> 10) & 3) 
+    {
+    case 0: printf_unfiltered ("NEAREST; "); break;
+    case 1: printf_unfiltered ("DOWN; "); break;
+    case 2: printf_unfiltered ("UP; "); break;
+    case 3: printf_unfiltered ("CHOP; "); break;
+    }
+  if (control & 0x3f) 
+    {
+      printf_unfiltered ("mask:");
+      if (control & 0x0001) printf_unfiltered (" INVALID");
+      if (control & 0x0002) printf_unfiltered (" DENORM");
+      if (control & 0x0004) printf_unfiltered (" DIVZ");
+      if (control & 0x0008) printf_unfiltered (" OVERF");
+      if (control & 0x0010) printf_unfiltered (" UNDERF");
+      if (control & 0x0020) printf_unfiltered (" LOS");
+      printf_unfiltered (";");
+    }
+  printf_unfiltered ("\n");
+  if (control & 0xe080) warning ("reserved bits on: %s\n",
+				local_hex_string(control & 0xe080));
+}
+
+void
+print_387_status_word (status)
+     unsigned int status;
+{
+  printf_unfiltered ("status %s: ", local_hex_string (status));
+  if (status & 0xff) 
+    {
+      printf_unfiltered ("exceptions:");
+      if (status & 0x0001) printf_unfiltered (" INVALID");
+      if (status & 0x0002) printf_unfiltered (" DENORM");
+      if (status & 0x0004) printf_unfiltered (" DIVZ");
+      if (status & 0x0008) printf_unfiltered (" OVERF");
+      if (status & 0x0010) printf_unfiltered (" UNDERF");
+      if (status & 0x0020) printf_unfiltered (" LOS");
+      if (status & 0x0040) printf_unfiltered (" FPSTACK");
+      printf_unfiltered ("; ");
+    }
+  printf_unfiltered ("flags: %d%d%d%d; ",
+	  (status & 0x4000) != 0,
+	  (status & 0x0400) != 0,
+	  (status & 0x0200) != 0,
+	  (status & 0x0100) != 0);
+
+  printf_unfiltered ("top %d\n", (status >> 11) & 7);
+}