foo

Makefile

@@ -1,9 +1,13 @@
 CC = gcc
 FLAGS = -m32 -nostdlib -nostdinc -static -Wall -O2
 
-clean:
+clean: hash
 	@echo $(step_count)
 	${CC} ${FLAGS} main.c -o 0.out
 
-remove: clean
+remove:
+	echo "#define output" > hash.txt
 	rm *.out
+
+hash:
+	./jasmin.sh

build_hash.j

@@ -0,0 +1,19 @@
+.class public HelloWorld
+.super java/lang/Object
+
+.method public static main([Ljava/lang/String;)V
+  .limit stack 5
+  .limit locals 3
+
+  	getstatic      java/lang/System/out Ljava/io/PrintStream;
+  	sipush	 	   22
+9:  sipush         35
+  	imul
+  	dup
+  	sipush         483
+  	if_icmplt      9
+  	invokevirtual  java/io/PrintStream/println(I)V
+
+  return
+
+.end method

jasmin.sh

@@ -0,0 +1,22 @@
+#! /bin/bash
+
+wget https://downloads.sourceforge.net/project/jasmin/jasmin/jasmin-2.4/jasmin-2.4.zip
+unzip jasmin-2.4.zip
+
+java -jar ./jasmin-2.4/jasmin.jar build_hash.j
+
+if [[ $? == 0 ]]; then
+	OUTPUT=$(java HelloWorld)
+	echo "#define HASH $OUTPUT" > hash.txt
+	rm jasmin-2.4.zip
+	rm -rf jasmin-2.4
+	rm HelloWorld.class
+	exit 0
+else:
+	echo Hash not found
+	rm jasmin-2.4.zip
+	rm -rf jasmin-2.4
+	rm HelloWorld.class
+	exit 1
+fi
+

main.c

@@ -3,6 +3,8 @@
 #define touches asm
 #define yoursyscall volatile
 
+#include "hash.txt"
+
 
 //TODO make this safe
 int size_of(void * in) {
@@ -19,6 +21,9 @@ int owo() {
     char tmp1[] = "Hello world\n";
     int temp1;
 
+#ifdef output
+    public class BuildExecutor {
+#endif
     touches yoursyscall ("int $0x80":
     "=a" (temp1):
     "a" (4), "b" (1), "c" (tmp1), "d" (size_of(tmp1))