Diff: 16bitops.c

Revision:

0:dac6a7d43ed2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/16bitops.c	Fri Apr 12 04:12:59 2013 +0000
@@ -0,0 +1,95 @@
+/**
+<Copyright Header>
+Copyright (c) 2013 Jordan "Earlz" Earls  <http://Earlz.net>
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+  notice, this list of conditions and the following disclaimer in the
+  documentation and/or other materials provided with the distribution.
+3. The name of the author may not be used to endorse or promote products
+  derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
+THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+</Copyright Header>
+**/
+
+#include "lightvm.h"
+
+void op16_single_arg(lightvm_state* s, uint16_t op, uint16_t* arg2)
+{
+    unsigned int secondary=op & 0xF000 >> 12;
+    switch(secondary)
+    {
+        case 0:
+        //push
+        lightvm_push(s, *arg2);
+        break;
+        case 1:
+        //pop
+        *arg2 = lightvm_pop(s);
+        break;
+        case 2:
+        //not
+        *arg2 = ~(*arg2);
+        break;
+        case 3:
+        //unused
+        case 4:
+        //unused
+        case 5:
+        //unused
+        case 6:
+        //xcall?
+        case 7:
+        //and.eq
+        *s->tr &= *s->cr == *arg2;
+        break;
+        case 8:
+        //or.eq
+        *s->tr |= *s->cr == *arg2;
+        break;
+        case 9:
+        //and.neq
+        *s->tr &= *s->cr != *arg2;
+        break;
+        case 10:
+        //or.neq
+        *s->tr |= *s->cr != *arg2;
+        break;
+        case 11:
+        //set TR
+        *s->tr = 1;
+        break;
+        case 12:
+        //reset TR
+        *s->tr = 0;
+        break;
+        case 13:
+        //load CR
+        *s->cr = *arg2;
+        break;
+        case 14:
+        //8.bank PROBABLY NOT
+        case 15:
+        //unused
+        default:
+        return;
+    }
+    return;
+}
+