Johns release

gdb/mips-xdep.c

@@ -0,0 +1,132 @@
+/* Low level MIPS interface to ptrace, for GDB when running under Unix.
+   Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc.
+   Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
+   and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
+
+This file is part of GDB.
+
+GDB 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 1, or (at your option)
+any later version.
+
+GDB 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 GDB; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <stdio.h>
+#include <mips/inst.h>
+#include "defs.h"
+#include "param.h"
+#include "frame.h"
+#include "inferior.h"
+#include "symtab.h"
+#include "value.h"
+
+#ifdef USG
+#include <sys/types.h>
+#endif
+
+#include <sys/param.h>
+#include <sys/dir.h>
+#include <signal.h>
+#include <sys/ioctl.h>
+/* #include <fcntl.h>  Can we live without this?  */
+
+#include "gdbcore.h"
+
+#include <sys/user.h>		/* After a.out.h  */
+#include <sys/file.h>
+#include <sys/stat.h>
+
+/* Get all registers from the inferior */
+
+void
+fetch_inferior_registers ()
+{
+  register int regno;
+  register unsigned int regaddr;
+  char buf[MAX_REGISTER_RAW_SIZE];
+  register int i;
+
+  registers_fetched ();
+
+  for (regno = 1; regno < NUM_REGS; regno++)
+    {
+      regaddr = register_addr (regno, 1);
+      for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
+ 	{
+ 	  *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0);
+ 	  regaddr += sizeof (int);
+ 	}
+      supply_register (regno, buf);
+    }
+}
+
+/* Store our register values back into the inferior.
+   If REGNO is -1, do this for all registers.
+   Otherwise, REGNO specifies which register (so we can save time).  */
+
+store_inferior_registers (regno)
+     int regno;
+{
+  register unsigned int regaddr;
+  char buf[80];
+
+  if (regno == 0)
+    return;
+
+  if (regno > 0)
+    {
+      regaddr = register_addr (regno, 1);
+      errno = 0;
+      ptrace (6, inferior_pid, regaddr, read_register (regno));
+      if (errno != 0)
+	{
+	  sprintf (buf, "writing register number %d", regno);
+	  perror_with_name (buf);
+	}
+    }
+  else
+    {
+      for (regno = 1; regno < NUM_REGS; regno++)
+	{
+	  if (regno == 32 || regno == 35 || regno == 36 || regno == 71)
+	    continue;
+	  regaddr = register_addr (regno, 1);
+	  errno = 0;
+	  ptrace (6, inferior_pid, regaddr, read_register (regno));
+	  if (errno != 0)
+	    {
+	      sprintf (buf, "writing all regs, number %d", regno);
+	      perror_with_name (buf);
+	    }
+	}
+    }
+}
+
+void
+fetch_core_registers ()
+{
+  register int regno;
+  int val;
+
+  for (regno = 1; regno < NUM_REGS; regno++) {
+    char buf[MAX_REGISTER_RAW_SIZE];
+
+    val = bfd_seek (core_bfd, register_addr (regno, 0));
+    if (val < 0 || (val = bfd_read (core_bfd, buf, sizeof buf)) < 0) {
+      char buffer[50];
+      strcpy (buffer, "Reading register ");
+      strcat (buffer, reg_names[regno]);
+
+      perror_with_name (buffer);
+    }
+    supply_register (regno, buf);
+  }
+}