Reduce JIT allocation size to 1MB.

com/bdjb/Exploit.java

@@ -79,8 +79,11 @@ class Exploit implements Runnable {
 
       socket.close();
 
-      Screen.println("[*] Executing payload...");
+      Screen.println("[*] Mapping payload...");
       long payload = jit.mapPayload("/OS/HDD/download0/mnt_ada/payload.bin", 0x4000);
+      Screen.println("[+] payload: " + Long.toHexString(payload));
+
+      Screen.println("[*] Executing payload...");
       int ret = (int) api.call(payload, api.dlsym(API.LIBKERNEL_MODULE_HANDLE, "sceKernelDlsym"));
       Screen.println("[+] Result: " + ret);
     } catch (Exception e) {

com/bdjb/JIT.java

@@ -149,12 +149,12 @@ public final class JIT {
       throw new IllegalArgumentException("Invalid data section offset.");
     }
 
-    // TODO: Currently we just use maximum size so that the address is predictable.
-    long size = MAX_CODE_SIZE;
+    // TODO: Currently we hardcode the size so that the address is predictable.
+    long size = 1 * 1024 * 1024;
     //    long size = file.length() + 0x88 + ALIGNMENT - 1;
-    //    if (size >= MAX_CODE_SIZE) {
-    //      throw new IllegalArgumentException("Payload is too big.");
-    //    }
+    if (size >= MAX_CODE_SIZE) {
+      throw new IllegalArgumentException("Payload is too big.");
+    }
 
     // Allocate JIT memory.
     long name = api.malloc(4);