[PATCH] Native VAX BSD support

[Mark Kettenis <kettenis at chello dot nl>]

This file will be needed for NetBSD/vax and OpenBSD/vax native
support.  Some bits are still missing, but this is a step in the right
direction.

Committed,

Mark


Index: ChangeLog
from  Mark Kettenis  <kettenis@gnu.org>
 
	* vaxbsd-nat.c: New file.

Index: vaxbsd-nat.c
===================================================================
RCS file: vaxbsd-nat.c
diff -N vaxbsd-nat.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ vaxbsd-nat.c 12 Apr 2004 16:50:43 -0000
@@ -0,0 +1,94 @@
+/* Native-dependent code for VAX BSD's.
+
+   Copyright 2004 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 "inferior.h"
+#include "regcache.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+#include "vax-tdep.h"
+
+/* Supply the general-purpose registers stored in GREGS to REGCACHE.  */
+
+static void
+vaxbsd_supply_gregset (struct regcache *regcache, const void *gregs)
+{
+  const char *regs = gregs;
+  int regnum;
+
+  for (regnum = 0; regnum < VAX_NUM_REGS; regnum++)
+    regcache_raw_supply (regcache, regnum, regs + regnum * 4);
+}
+
+/* Collect the general-purpose registers from REGCACHE and store them
+   in GREGS.  */
+
+static void
+vaxbsd_collect_gregset (const struct regcache *regcache,
+			void *gregs, int regnum)
+{
+  char *regs = gregs;
+  int i;
+
+  for (i = 0; i <= VAX_NUM_REGS; i++)
+    {
+      if (regnum == -1 || regnum == i)
+	regcache_raw_collect (regcache, regnum, regs + i * 4);
+    }
+}
+
+
+/* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
+   for all registers.  */
+
+void
+fetch_inferior_registers (int regnum)
+{
+  struct reg regs;
+
+  if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+	      (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+    perror_with_name ("Couldn't get registers");
+
+  vaxbsd_supply_gregset (current_regcache, &regs);
+}
+
+/* Store register REGNUM back into the inferior.  If REGNUM is -1, do
+   this for all registers.  */
+
+void
+store_inferior_registers (int regnum)
+{
+  struct reg regs;
+
+  if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
+	      (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+    perror_with_name ("Couldn't get registers");
+
+  vaxbsd_collect_gregset (current_regcache, &regs, regnum);
+
+  if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
+	      (PTRACE_ARG3_TYPE) &regs, 0) == -1)
+    perror_with_name ("Couldn't write registers");
+}