fix sltiu

[nestedvm.git] / src / org / ibex / nestedvm / Interpreter.java

diff --git a/src/org/ibex/nestedvm/Interpreter.java b/src/org/ibex/nestedvm/Interpreter.java
index 276eea7..1fcdc4b 100644 (file)
--- a/src/org/ibex/nestedvm/Interpreter.java
+++ b/src/org/ibex/nestedvm/Interpreter.java
@@ -65,6 +65,7 @@ public class Interpreter extends UnixRuntime {
         try {
             insn = readPages[pc>>>pageShift][(pc>>>2)&PAGE_WORDS-1];
         } catch (RuntimeException e) {
+            if(pc == 0xdeadbeef) throw new Error("fell off cpu: r2: " + r[2]);
             insn = memRead(pc);
         }
 
@@ -270,7 +271,7 @@ public class Interpreter extends UnixRuntime {
                 r[rt] = r[rs] < signedImmediate ? 1 : 0;
                 break;
             case 11: // SLTIU
-                r[rt] = (r[rs]&0xffffffffL) < (unsignedImmediate&0xffffffffL) ? 1 : 0;
+                r[rt] = (r[rs]&0xffffffffL) < (signedImmediate&0xffffffffL) ? 1 : 0;
                 break;
             case 12: // ANDI
                 r[rt] = r[rs] & unsignedImmediate;
@@ -600,14 +601,14 @@ public class Interpreter extends UnixRuntime {
                 memWrite(addr&~3,tmp);
                 break;
             }
-            // FEATURE: Needs to be atomic w/ threads
+            // Needs to be atomic w/ threads
             case 48: // LWC0/LL
                 r[rt] = memRead(r[rs] + signedImmediate);
                 break;
             case 49: // LWC1
                 f[rt] = memRead(r[rs] + signedImmediate);
                 break;
-            // FEATURE: Needs to be atomic w/ threads
+            // Needs to be atomic w/ threads
             case 56:
                 memWrite(r[rs] + signedImmediate,r[rt]);
                 r[rt] = 1;