Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 83 insertions, 0 deletions

diff --git a/gdb/dpx2-nat.c b/gdb/dpx2-nat.c
new file mode 100644
index 0000000..21dc135
--- /dev/null
+++ b/gdb/dpx2-nat.c
@@ -0,0 +1,83 @@
+/* DPX2 host interface.
+   Copyright (C) 1988, 1989, 1991 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 "gdbcore.h"
+
+#include "gdb_string.h"
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/dir.h>
+#include <signal.h>
+#include <sys/user.h>
+#include <sys/reg.h>
+#include <sys/utsname.h>
+
+
+/* this table must line up with REGISTER_NAMES in tm-68k.h */
+/* symbols like 'A0' come from <sys/reg.h> */
+static int regmap[] = 
+{
+  R0, R1, R2, R3, R4, R5, R6, R7,
+  A0, A1, A2, A3, A4, A5, A6, SP,
+  PS, PC,
+  FP0, FP1, FP2, FP3, FP4, FP5, FP6, FP7,
+  FP_CR, FP_SR, FP_IAR
+};
+
+/* blockend is the value of u.u_ar0, and points to the
+ * place where D0 is stored
+ */
+
+int
+dpx2_register_u_addr (blockend, regnum)
+     int blockend;
+     int regnum;
+{
+  if (regnum < FP0_REGNUM)
+    return (blockend + 4 * regmap[regnum]);
+  else
+    return (int) &(((struct user *)0)->u_fpstate[regmap[regnum]]);
+}
+
+/* This is the amount to subtract from u.u_ar0
+   to get the offset in the core file of the register values.
+   Unfortunately this is not provided in the system header files.
+   To make matters worse, this value also differs between
+   the dpx/2200 and dpx/2300 models and nlist is not available on the dpx2.
+   We use utsname() to decide on which model we are running.
+   FIXME: This breaks cross examination of core files (it would not be hard
+   to check whether u.u_ar0 is between 0x7fff5000 and 0x7fffc000 and if so
+   use 0x7fff5000 and if not use 0x7fffc000.  FIXME).  */
+
+#define KERNEL_U_ADDR_200 0x7fff5000
+#define KERNEL_U_ADDR_300 0x7fffc000
+
+CORE_ADDR kernel_u_addr;
+
+void
+_initialize_dpx2_nat ()
+{
+  struct utsname uts;
+
+  if (uname (&uts) == 0 && strcmp (uts.machine, "DPX/2200") == 0)
+    kernel_u_addr = KERNEL_U_ADDR_200;
+  else
+    kernel_u_addr = KERNEL_U_ADDR_300;
+}