3 files changed, 124 insertions, 1 deletions
diff --git a/mixlib/Makefile.am b/mixlib/Makefile.am
index f3b986b..fe1433d 100644
--- a/mixlib/Makefile.am
+++ b/mixlib/Makefile.am
@@ -26,4 +26,6 @@ libmix_a_SOURCES = mix.h mix.c \
 		   mix_parser.h xmix_parser.h mix_parser.c mix_scanner.l \
                    mix_device.h mix_device.c \
                    mix_eval.h mix_eval.c xmix_eval.h mix_eval_scanner.l \
-		   mix_src_file.c mix_src_file.h
+		   mix_src_file.c mix_src_file.h \
+                   mix_vm_clock.c mix_vm_clock.h
+
diff --git a/mixlib/mix_vm_clock.c b/mixlib/mix_vm_clock.c
new file mode 100644
index 0000000..c8d1f67
--- /dev/null
+++ b/mixlib/mix_vm_clock.c
@@ -0,0 +1,66 @@
+/* -*-c-*- -------------- mix_vm_clock.c :
+ * Implementation of the functions declared in mix_vm_clock.h
+ * ------------------------------------------------------------------
+ *  Last change: Time-stamp: "00/12/22 02:19:30 jose"
+ * ------------------------------------------------------------------
+ * Copyright (C) 2000 jose antonio ortega ruiz <jaortega@acm.org>
+ *  
+ * 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 "mix_vm_clock.h"
+
+static const mix_time_t exec_times_[] = {
+  1, 2, 2, 10, 12, 10, 2, 1, 
+  2, 2, 2, 2 ,  2,  2, 2, 2,
+  2, 2, 2, 2 ,  2,  2, 2, 2,
+  2, 2, 2, 2 ,  2,  2, 2, 2,
+  2, 2, 1, 1,   1,  1, 1, 1,
+  1, 1, 1, 1,   1,  1, 1, 1,
+  1, 1, 1, 1,   1,  1, 1, 1,
+  2, 2, 2, 2 ,  2,  2, 2, 2
+};
+
+
+/* Create/delete a clock */
+mix_vm_clock_t *
+mix_vm_clock_new ()
+{
+  return g_new (mix_vm_clock_t, 1);
+}
+
+void
+mix_vm_clock_delete (mix_vm_clock_t *clock)
+{
+  g_return_if_fail (clock != NULL);
+}
+
+/* Increase time with the units needed to execute ins */
+mix_time_t
+mix_vm_clock_add_lapse (mix_vm_clock_t *clock, const mix_ins_t *ins)
+{
+  mix_time_t t = 0;
+  g_return_val_if_fail (clock != NULL, 0);
+  if (ins != NULL)
+    {
+      t = exec_times_[ins->opcode];
+      if (ins->opcode == mix_MOVE) t += 2 * (ins->fspec);
+    }
+  clock->time += t;
+  return t;
+}
+
diff --git a/mixlib/mix_vm_clock.h b/mixlib/mix_vm_clock.h
new file mode 100644
index 0000000..c283b71
--- /dev/null
+++ b/mixlib/mix_vm_clock.h
@@ -0,0 +1,55 @@
+/* -*-c-*- ---------------- mix_vm_clock.h :
+ * Declaration of mix_vm_clock_t, a clock for the MIX virtual machine.
+ * ------------------------------------------------------------------
+ *  Last change: Time-stamp: <00/12/22 01:53:18 jose>
+ * ------------------------------------------------------------------
+ * Copyright (C) 2000 jose antonio ortega ruiz <jaortega@acm.org>
+ *  
+ * 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.
+ *  
+ */
+
+
+#ifndef MIX_VM_CLOCK_H
+#define MIX_VM_CLOCK_H
+
+#include "mix.h"
+#include "mix_ins.h"
+
+/* the type of time unit */
+typedef gulong mix_time_t;
+
+/* the clock type */
+typedef struct mix_vm_clock_t
+{
+  mix_time_t time;
+} mix_vm_clock_t;
+
+/* Create/delete a clock */
+extern mix_vm_clock_t *
+mix_vm_clock_new ();
+
+extern void
+mix_vm_clock_delete (mix_vm_clock_t *clock);
+
+/* Increase time with the units needed to execute ins */
+extern mix_time_t /* the added lapse */
+mix_vm_clock_add_lapse (mix_vm_clock_t *clock, const mix_ins_t *ins);
+
+/* Get the time since creation */
+#define mix_vm_clock_get_time(clock) (clock? clock->time:0)
+
+#endif /* MIX_VM_CLOCK_H */
+