Initial revision

1 files changed, 263 insertions, 0 deletions

diff --git a/sim/z8k/iface.c b/sim/z8k/iface.c
new file mode 100644
index 00000000000..1b3883ef545
--- /dev/null
+++ b/sim/z8k/iface.c
@@ -0,0 +1,263 @@
+/* gdb->simulator interface.
+   Copyright (C) 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
+
+This file is part of Z8KSIM
+
+Z8KSIM 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, or (at your option)
+any later version.
+
+Z8KSIM 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 Z8KZIM; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "ansidecl.h"
+#include "sim.h"
+#include "tm.h"
+#include "signal.h"
+#include "bfd.h"
+#include "callback.h"
+#include "remote-sim.h"
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+host_callback *z8k_callback;
+
+static SIM_OPEN_KIND sim_kind;
+static char *myname;
+
+void
+sim_size (n)
+     int n;
+{
+  /* Size is fixed.  */
+}
+
+int
+sim_store_register (sd, regno, value, length)
+     SIM_DESC sd;
+     int regno;
+     unsigned char *value;
+     int length;
+{
+  /* FIXME: Review the computation of regval.  */
+  int regval = (value[0] << 24) | (value[1] << 16) | (value[2] << 8) | value[3];
+
+  tm_store_register (regno, regval);
+  return -1;
+}
+
+int
+sim_fetch_register (sd, regno, buf, length)
+     SIM_DESC sd;
+     int regno;
+     unsigned char *buf;
+     int length;
+{
+  tm_fetch_register (regno, buf);
+  return -1;
+}
+
+int
+sim_write (sd, where, what, howmuch)
+     SIM_DESC sd;
+     SIM_ADDR where;
+     unsigned char *what;
+     int howmuch;
+{
+  int i;
+
+  for (i = 0; i < howmuch; i++)
+    tm_write_byte (where + i, what[i]);
+  return howmuch;
+}
+
+int
+sim_read (sd, where, what, howmuch)
+     SIM_DESC sd;
+     SIM_ADDR where;
+     unsigned char *what;
+     int howmuch;
+{
+  int i;
+
+  for (i = 0; i < howmuch; i++)
+    what[i] = tm_read_byte (where + i);
+  return howmuch;
+}
+
+static void 
+control_c (sig, code, scp, addr)
+     int sig;
+     int code;
+     char *scp;
+     char *addr;
+{
+  tm_exception (SIM_INTERRUPT);
+}
+
+int
+sim_stop (sd)
+     SIM_DESC sd;
+{
+  tm_exception (SIM_INTERRUPT);
+  return 1;
+}
+
+void
+sim_resume (sd, step, sig)
+     SIM_DESC sd;
+     int step;
+     int sig;
+{
+  void (*prev) ();
+
+  prev = signal (SIGINT, control_c);
+  tm_resume (step);
+  signal (SIGINT, prev);
+}
+
+void
+sim_stop_reason (sd, reason, sigrc)
+     SIM_DESC sd;
+     enum sim_stop *reason;
+     int *sigrc;
+{
+  switch (tm_signal ())
+    {
+    case SIM_DIV_ZERO:
+      *sigrc = SIGFPE;
+      break;
+    case SIM_INTERRUPT:
+      *sigrc = SIGINT;
+      break;
+    case SIM_BAD_INST:
+      *sigrc = SIGILL;
+      break;
+    case SIM_BREAKPOINT:
+      *sigrc = SIGTRAP;
+      break;
+    case SIM_SINGLE_STEP:
+      *sigrc = SIGTRAP;
+      break;
+    case SIM_BAD_SYSCALL:
+      *sigrc = SIGILL;
+      break;
+    case SIM_BAD_ALIGN:
+      *sigrc = SIGSEGV;
+      break;
+    case SIM_DONE:
+      {
+	sim_state_type x;
+	tm_state (&x);
+	*sigrc = x.regs[2].word & 255;
+	*reason = sim_exited;
+	return;
+      }
+    default:
+      abort ();
+    }
+  *reason = sim_stopped;
+}
+
+void
+sim_info (sd, verbose)
+     SIM_DESC sd;
+     int verbose;
+{
+  sim_state_type x;
+
+  tm_state (&x);
+  tm_info_print (&x);
+}
+
+SIM_DESC
+sim_open (kind, cb, abfd, argv)
+     SIM_OPEN_KIND kind;
+     host_callback *cb;
+     struct _bfd *abfd;
+     char **argv;
+{
+  /* FIXME: The code in sim_load that determines the exact z8k arch
+     should be moved to here */
+
+  sim_kind = kind;
+  myname = argv[0];
+  z8k_callback = cb;
+
+  /* fudge our descriptor for now */
+  return (SIM_DESC) 1;
+}
+
+void
+sim_close (sd, quitting)
+     SIM_DESC sd;
+     int quitting;
+{
+  /* nothing to do */
+}
+
+SIM_RC
+sim_load (sd, prog, abfd, from_tty)
+     SIM_DESC sd;
+     char *prog;
+     bfd *abfd;
+     int from_tty;
+{
+  extern bfd *sim_load_file (); /* ??? Don't know where this should live.  */
+  bfd *prog_bfd;
+
+  /* FIXME: The code determining the type of z9k processor should be
+     moved from here to sim_open. */
+
+  prog_bfd = sim_load_file (sd, myname, z8k_callback, prog, abfd,
+			    sim_kind == SIM_OPEN_DEBUG,
+			    0, sim_write);
+  if (prog_bfd == NULL)
+    return SIM_RC_FAIL;
+  if (bfd_get_mach (prog_bfd) == bfd_mach_z8001)
+    {
+      extern int sim_z8001_mode;
+      sim_z8001_mode = 1;
+    }
+  /* Close the bfd if we opened it.  */
+  if (abfd == NULL)
+    bfd_close (prog_bfd);
+  return SIM_RC_OK;
+}
+
+SIM_RC
+sim_create_inferior (sd, abfd, argv, env)
+     SIM_DESC sd;
+     struct _bfd *abfd;
+     char **argv;
+     char **env;
+{
+  if (abfd != NULL)
+    tm_store_register (REG_PC, bfd_get_start_address (abfd));
+  else
+    tm_store_register (REG_PC, 0);
+  return SIM_RC_OK;
+}
+
+void
+sim_do_command (sd, cmd)
+     SIM_DESC sd;
+     char *cmd;
+{
+}
+
+void
+sim_set_callbacks (ptr)
+     host_callback *ptr;
+{
+  z8k_callback = ptr;
+}