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authorStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@codesourcery.com>1999-04-16 01:35:26 +0000
commitc906108c21474dfb4ed285bcc0ac6fe02cd400cc (patch)
treea0015aa5cedc19ccbab307251353a41722a3ae13 /gdb/dpx2-nat.c
parentcd946cff9ede3f30935803403f06f6ed30cad136 (diff)
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Initial creation of sourceware repositorygdb-4_18-branchpoint
Diffstat (limited to 'gdb/dpx2-nat.c')
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diff --git a/gdb/dpx2-nat.c b/gdb/dpx2-nat.c
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+/* 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;
+}