From 68a36f16c1f32bfabb1f5030647e7018aac3e1c8 Mon Sep 17 00:00:00 2001
From: Zhaolin Deng <zhaolin.deng@student.unimelb.edu.au>
Date: Sun, 14 Oct 2018 12:13:33 +0800
Subject: [PATCH] update
---
fuzzer/Fuzzer.java | 41 ++++++++++++++++++++++++++++++++---------
1 file changed, 32 insertions(+), 9 deletions(-)
diff --git a/fuzzer/Fuzzer.java b/fuzzer/Fuzzer.java
index 4ea3793..1d8a8c0 100644
--- a/fuzzer/Fuzzer.java
+++ b/fuzzer/Fuzzer.java
@@ -23,7 +23,7 @@ public class Fuzzer {
Random rg = new Random();
- }catch (Exception e){s
+ }catch (Exception e){
e.printStackTrace(System.err);
System.exit(1);
}finally{
@@ -188,8 +188,15 @@ public class Fuzzer {
}
//DZL
- public String generateOffsetOverFlow() {
- return null;
+ public String generateOffsetOverFlow(Random rg) {
+ String line = new String();
+ Boolean positive = rg.nextBoolean();
+ if(!positive) {
+ line.concat("MOV R0 -70000");
+ }else {
+ line.concat("MOV R0 70000");
+ }
+ return line;
}
public String generateLineOverFlow() {
@@ -220,9 +227,14 @@ public class Fuzzer {
return line;
}
- //DZL
public String generateDirtyRegistyRead() {
- return null;
+ String line = new String();
+
+ for(int x=1;x<maxRegistry-1;x++) {
+ line.concat("ADD R0 R0 R"+x+"%n");
+ }
+ line.concat("RET R0");
+ return line;
}
public String generateDirtyMemoryRead(Random rg) {
@@ -282,11 +294,22 @@ public class Fuzzer {
return line;
}
- //DZL
public String generateInvalidOperands(Random rg) {
- //rg.nextInt(3)
- //register = rg.nextInt(maxRegistry);
- //wrong operands
+ int regs = rg.nextInt(4);
+ String line = new String();
+ Boolean hasval = rg.nextBoolean();
+ int index = rg.nextInt(validOpcodes.size());
+ String opcode = validOpcodes.get(index);
+ line.concat(opcode);
+ for(int x=0;x<regs;x++) {
+ int register = rg.nextInt(maxRegistry);
+ line.concat(" R"+register);
+ }
+ if(hasval) {
+ int value=rg.nextInt(maxMemory);
+ line.concat(" "+value);
+ }
+
//too many arguments
return null;
}
--
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