Add fake jvm

4 files changed, 2960 insertions, 9 deletions

diff --git a/src/app.c b/src/app.c
index 6dd8e10..5d23a3d 100644
--- a/src/app.c
+++ b/src/app.c
@@ -4,6 +4,7 @@
 #include <dlfcn.h>
 #include <err.h>
 #include <assert.h>
+#include "fakejvm/jvm.h"
 
 extern void *apkenv_android_dlopen(const char*, int);
 extern void *apkenv_android_dlclose(void*);
@@ -16,25 +17,32 @@ main(int argc, const char *argv[])
    if (argc < 2)
       errx(EXIT_FAILURE, "usage: so-file");
 
+   printf("loading runtime\n");
    dlopen("libpthread.so", RTLD_NOW | RTLD_GLOBAL);
 
-   printf("loading: %s\n", argv[1]);
+   printf("loading module: %s\n", argv[1]);
 
-   char path[4096];
-   snprintf(path, sizeof(path), "%s", argv[1]);
-   apkenv_parse_library_path(dirname(path), ";");
+   {
+      char path[4096];
+      snprintf(path, sizeof(path), "%s", argv[1]);
+      apkenv_parse_library_path(dirname(path), ";");
+   }
 
    void *handle;
    if (!(handle = apkenv_android_dlopen(argv[1], RTLD_NOW | RTLD_LOCAL)))
       errx(EXIT_FAILURE, "dlopen failed: %s", dlerror());
 
-   printf("loaded: %s\n", argv[1]);
+   printf("trying JNI_OnLoad from: %s\n", argv[1]);
 
-   void* (*JNI_OnLoad)(void*, void*) = apkenv_android_dlsym(handle, "JNI_OnLoad");
-   assert(JNI_OnLoad);
+   {
+      struct jvm jvm;
+      jvm_init(&jvm);
 
-   char data[1024];
-   JNI_OnLoad(data, NULL);
+      void* (*JNI_OnLoad)(void*, void*) = apkenv_android_dlsym(handle, "JNI_OnLoad");
+      assert(JNI_OnLoad);
+
+      JNI_OnLoad(&jvm.vm, NULL);
+   }
 
    // apkenv_android_dlclose(handle);
    return EXIT_SUCCESS;
diff --git a/src/fakejvm/jni.h b/src/fakejvm/jni.h
new file mode 100644
index 0000000..ad954c8
--- /dev/null
+++ b/src/fakejvm/jni.h
@@ -0,0 +1,1140 @@
+/*
+ * Copyright 2006 The Android Open Source Project
+ *
+ * JNI specification, as defined by Sun:
+ * http://java.sun.com/javase/6/docs/technotes/guides/jni/spec/jniTOC.html
+ *
+ * Everything here is expected to be VM-neutral.
+ */
+#ifndef _JNI_H
+#define _JNI_H
+
+#include <stdarg.h>
+
+/*
+ * Primitive types that match up with Java equivalents.
+ */
+#ifdef HAVE_INTTYPES_H
+# include <inttypes.h>      /* C99 */
+typedef uint8_t         jboolean;       /* unsigned 8 bits */
+typedef int8_t          jbyte;          /* signed 8 bits */
+typedef uint16_t        jchar;          /* unsigned 16 bits */
+typedef int16_t         jshort;         /* signed 16 bits */
+typedef int32_t         jint;           /* signed 32 bits */
+typedef int64_t         jlong;          /* signed 64 bits */
+typedef float           jfloat;         /* 32-bit IEEE 754 */
+typedef double          jdouble;        /* 64-bit IEEE 754 */
+#else
+typedef unsigned char   jboolean;       /* unsigned 8 bits */
+typedef signed char     jbyte;          /* signed 8 bits */
+typedef unsigned short  jchar;          /* unsigned 16 bits */
+typedef short           jshort;         /* signed 16 bits */
+typedef int             jint;           /* signed 32 bits */
+typedef long long       jlong;          /* signed 64 bits */
+typedef float           jfloat;         /* 32-bit IEEE 754 */
+typedef double          jdouble;        /* 64-bit IEEE 754 */
+#endif
+
+/* "cardinal indices and sizes" */
+typedef jint            jsize;
+
+#ifdef __cplusplus
+/*
+ * Reference types, in C++
+ */
+class _jobject {};
+class _jclass : public _jobject {};
+class _jstring : public _jobject {};
+class _jarray : public _jobject {};
+class _jobjectArray : public _jarray {};
+class _jbooleanArray : public _jarray {};
+class _jbyteArray : public _jarray {};
+class _jcharArray : public _jarray {};
+class _jshortArray : public _jarray {};
+class _jintArray : public _jarray {};
+class _jlongArray : public _jarray {};
+class _jfloatArray : public _jarray {};
+class _jdoubleArray : public _jarray {};
+class _jthrowable : public _jobject {};
+
+typedef _jobject*       jobject;
+typedef _jclass*        jclass;
+typedef _jstring*       jstring;
+typedef _jarray*        jarray;
+typedef _jobjectArray*  jobjectArray;
+typedef _jbooleanArray* jbooleanArray;
+typedef _jbyteArray*    jbyteArray;
+typedef _jcharArray*    jcharArray;
+typedef _jshortArray*   jshortArray;
+typedef _jintArray*     jintArray;
+typedef _jlongArray*    jlongArray;
+typedef _jfloatArray*   jfloatArray;
+typedef _jdoubleArray*  jdoubleArray;
+typedef _jthrowable*    jthrowable;
+typedef _jobject*       jweak;
+
+
+#else /* not __cplusplus */
+
+/*
+ * Reference types, in C.
+ */
+typedef void*           jobject;
+typedef jobject         jclass;
+typedef jobject         jstring;
+typedef jobject         jarray;
+typedef jarray          jobjectArray;
+typedef jarray          jbooleanArray;
+typedef jarray          jbyteArray;
+typedef jarray          jcharArray;
+typedef jarray          jshortArray;
+typedef jarray          jintArray;
+typedef jarray          jlongArray;
+typedef jarray          jfloatArray;
+typedef jarray          jdoubleArray;
+typedef jobject         jthrowable;
+typedef jobject         jweak;
+
+#endif /* not __cplusplus */
+
+struct _jfieldID;                       /* opaque structure */
+typedef struct _jfieldID* jfieldID;     /* field IDs */
+
+struct _jmethodID;                      /* opaque structure */
+typedef struct _jmethodID* jmethodID;   /* method IDs */
+
+struct JNIInvokeInterface;
+
+typedef union jvalue {
+    jboolean    z;
+    jbyte       b;
+    jchar       c;
+    jshort      s;
+    jint        i;
+    jlong       j;
+    jfloat      f;
+    jdouble     d;
+    jobject     l;
+} jvalue;
+
+typedef enum jobjectRefType {
+    JNIInvalidRefType = 0,
+    JNILocalRefType = 1,
+    JNIGlobalRefType = 2,
+    JNIWeakGlobalRefType = 3
+} jobjectRefType;
+
+typedef struct { 
+    const char* name; 
+    const char* signature; 
+    void*       fnPtr; 
+} JNINativeMethod;
+
+struct _JNIEnv;
+struct _JavaVM;
+typedef const struct JNINativeInterface* C_JNIEnv;
+
+#if defined(__cplusplus)
+typedef _JNIEnv JNIEnv;
+typedef _JavaVM JavaVM;
+#else
+typedef const struct JNINativeInterface* JNIEnv;
+typedef const struct JNIInvokeInterface* JavaVM;
+#endif
+
+/*
+ * Table of interface function pointers.
+ */
+struct JNINativeInterface {
+    void*       reserved0;
+    void*       reserved1;
+    void*       reserved2;
+    void*       reserved3;
+
+    jint        (*GetVersion)(JNIEnv *);
+
+    jclass      (*DefineClass)(JNIEnv*, const char*, jobject, const jbyte*,
+                        jsize);
+    jclass      (*FindClass)(JNIEnv*, const char*);
+
+    jmethodID   (*FromReflectedMethod)(JNIEnv*, jobject);
+    jfieldID    (*FromReflectedField)(JNIEnv*, jobject);
+    /* spec doesn't show jboolean parameter */
+    jobject     (*ToReflectedMethod)(JNIEnv*, jclass, jmethodID, jboolean);
+
+    jclass      (*GetSuperclass)(JNIEnv*, jclass);
+    jboolean    (*IsAssignableFrom)(JNIEnv*, jclass, jclass);
+
+    /* spec doesn't show jboolean parameter */
+    jobject     (*ToReflectedField)(JNIEnv*, jclass, jfieldID, jboolean);
+
+    jint        (*Throw)(JNIEnv*, jthrowable);
+    jint        (*ThrowNew)(JNIEnv *, jclass, const char *);
+    jthrowable  (*ExceptionOccurred)(JNIEnv*);
+    void        (*ExceptionDescribe)(JNIEnv*);
+    void        (*ExceptionClear)(JNIEnv*);
+    void        (*FatalError)(JNIEnv*, const char*);
+
+    jint        (*PushLocalFrame)(JNIEnv*, jint);
+    jobject     (*PopLocalFrame)(JNIEnv*, jobject);
+
+    jobject     (*NewGlobalRef)(JNIEnv*, jobject);
+    void        (*DeleteGlobalRef)(JNIEnv*, jobject);
+    void        (*DeleteLocalRef)(JNIEnv*, jobject);
+    jboolean    (*IsSameObject)(JNIEnv*, jobject, jobject);
+
+    jobject     (*NewLocalRef)(JNIEnv*, jobject);
+    jint        (*EnsureLocalCapacity)(JNIEnv*, jint);
+
+    jobject     (*AllocObject)(JNIEnv*, jclass);
+    jobject     (*NewObject)(JNIEnv*, jclass, jmethodID, ...);
+    jobject     (*NewObjectV)(JNIEnv*, jclass, jmethodID, va_list);
+    jobject     (*NewObjectA)(JNIEnv*, jclass, jmethodID, jvalue*);
+
+    jclass      (*GetObjectClass)(JNIEnv*, jobject);
+    jboolean    (*IsInstanceOf)(JNIEnv*, jobject, jclass);
+    jmethodID   (*GetMethodID)(JNIEnv*, jclass, const char*, const char*);
+
+    jobject     (*CallObjectMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jobject     (*CallObjectMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jobject     (*CallObjectMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jboolean    (*CallBooleanMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jboolean    (*CallBooleanMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jboolean    (*CallBooleanMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jbyte       (*CallByteMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jbyte       (*CallByteMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jbyte       (*CallByteMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jchar       (*CallCharMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jchar       (*CallCharMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jchar       (*CallCharMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jshort      (*CallShortMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jshort      (*CallShortMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jshort      (*CallShortMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jint        (*CallIntMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jint        (*CallIntMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jint        (*CallIntMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jlong       (*CallLongMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jlong       (*CallLongMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jlong       (*CallLongMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jfloat      (*CallFloatMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jfloat      (*CallFloatMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jfloat      (*CallFloatMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    jdouble     (*CallDoubleMethod)(JNIEnv*, jobject, jmethodID, ...);
+    jdouble     (*CallDoubleMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    jdouble     (*CallDoubleMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+    void        (*CallVoidMethod)(JNIEnv*, jobject, jmethodID, ...);
+    void        (*CallVoidMethodV)(JNIEnv*, jobject, jmethodID, va_list);
+    void        (*CallVoidMethodA)(JNIEnv*, jobject, jmethodID, jvalue*);
+
+    jobject     (*CallNonvirtualObjectMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jobject     (*CallNonvirtualObjectMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jobject     (*CallNonvirtualObjectMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jboolean    (*CallNonvirtualBooleanMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jboolean    (*CallNonvirtualBooleanMethodV)(JNIEnv*, jobject, jclass,
+                         jmethodID, va_list);
+    jboolean    (*CallNonvirtualBooleanMethodA)(JNIEnv*, jobject, jclass,
+                         jmethodID, jvalue*);
+    jbyte       (*CallNonvirtualByteMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jbyte       (*CallNonvirtualByteMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jbyte       (*CallNonvirtualByteMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jchar       (*CallNonvirtualCharMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jchar       (*CallNonvirtualCharMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jchar       (*CallNonvirtualCharMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jshort      (*CallNonvirtualShortMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jshort      (*CallNonvirtualShortMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jshort      (*CallNonvirtualShortMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jint        (*CallNonvirtualIntMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jint        (*CallNonvirtualIntMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jint        (*CallNonvirtualIntMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jlong       (*CallNonvirtualLongMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jlong       (*CallNonvirtualLongMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jlong       (*CallNonvirtualLongMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jfloat      (*CallNonvirtualFloatMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jfloat      (*CallNonvirtualFloatMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jfloat      (*CallNonvirtualFloatMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    jdouble     (*CallNonvirtualDoubleMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    jdouble     (*CallNonvirtualDoubleMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    jdouble     (*CallNonvirtualDoubleMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+    void        (*CallNonvirtualVoidMethod)(JNIEnv*, jobject, jclass,
+                        jmethodID, ...);
+    void        (*CallNonvirtualVoidMethodV)(JNIEnv*, jobject, jclass,
+                        jmethodID, va_list);
+    void        (*CallNonvirtualVoidMethodA)(JNIEnv*, jobject, jclass,
+                        jmethodID, jvalue*);
+
+    jfieldID    (*GetFieldID)(JNIEnv*, jclass, const char*, const char*);
+
+    jobject     (*GetObjectField)(JNIEnv*, jobject, jfieldID);
+    jboolean    (*GetBooleanField)(JNIEnv*, jobject, jfieldID);
+    jbyte       (*GetByteField)(JNIEnv*, jobject, jfieldID);
+    jchar       (*GetCharField)(JNIEnv*, jobject, jfieldID);
+    jshort      (*GetShortField)(JNIEnv*, jobject, jfieldID);
+    jint        (*GetIntField)(JNIEnv*, jobject, jfieldID);
+    jlong       (*GetLongField)(JNIEnv*, jobject, jfieldID);
+    jfloat      (*GetFloatField)(JNIEnv*, jobject, jfieldID);
+    jdouble     (*GetDoubleField)(JNIEnv*, jobject, jfieldID);
+
+    void        (*SetObjectField)(JNIEnv*, jobject, jfieldID, jobject);
+    void        (*SetBooleanField)(JNIEnv*, jobject, jfieldID, jboolean);
+    void        (*SetByteField)(JNIEnv*, jobject, jfieldID, jbyte);
+    void        (*SetCharField)(JNIEnv*, jobject, jfieldID, jchar);
+    void        (*SetShortField)(JNIEnv*, jobject, jfieldID, jshort);
+    void        (*SetIntField)(JNIEnv*, jobject, jfieldID, jint);
+    void        (*SetLongField)(JNIEnv*, jobject, jfieldID, jlong);
+    void        (*SetFloatField)(JNIEnv*, jobject, jfieldID, jfloat);
+    void        (*SetDoubleField)(JNIEnv*, jobject, jfieldID, jdouble);
+
+    jmethodID   (*GetStaticMethodID)(JNIEnv*, jclass, const char*, const char*);
+
+    jobject     (*CallStaticObjectMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jobject     (*CallStaticObjectMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jobject     (*CallStaticObjectMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jboolean    (*CallStaticBooleanMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jboolean    (*CallStaticBooleanMethodV)(JNIEnv*, jclass, jmethodID,
+                        va_list);
+    jboolean    (*CallStaticBooleanMethodA)(JNIEnv*, jclass, jmethodID,
+                        jvalue*);
+    jbyte       (*CallStaticByteMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jbyte       (*CallStaticByteMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jbyte       (*CallStaticByteMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jchar       (*CallStaticCharMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jchar       (*CallStaticCharMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jchar       (*CallStaticCharMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jshort      (*CallStaticShortMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jshort      (*CallStaticShortMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jshort      (*CallStaticShortMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jint        (*CallStaticIntMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jint        (*CallStaticIntMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jint        (*CallStaticIntMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jlong       (*CallStaticLongMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jlong       (*CallStaticLongMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jlong       (*CallStaticLongMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jfloat      (*CallStaticFloatMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jfloat      (*CallStaticFloatMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jfloat      (*CallStaticFloatMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    jdouble     (*CallStaticDoubleMethod)(JNIEnv*, jclass, jmethodID, ...);
+    jdouble     (*CallStaticDoubleMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    jdouble     (*CallStaticDoubleMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+    void        (*CallStaticVoidMethod)(JNIEnv*, jclass, jmethodID, ...);
+    void        (*CallStaticVoidMethodV)(JNIEnv*, jclass, jmethodID, va_list);
+    void        (*CallStaticVoidMethodA)(JNIEnv*, jclass, jmethodID, jvalue*);
+
+    jfieldID    (*GetStaticFieldID)(JNIEnv*, jclass, const char*,
+                        const char*);
+
+    jobject     (*GetStaticObjectField)(JNIEnv*, jclass, jfieldID);
+    jboolean    (*GetStaticBooleanField)(JNIEnv*, jclass, jfieldID);
+    jbyte       (*GetStaticByteField)(JNIEnv*, jclass, jfieldID);
+    jchar       (*GetStaticCharField)(JNIEnv*, jclass, jfieldID);
+    jshort      (*GetStaticShortField)(JNIEnv*, jclass, jfieldID);
+    jint        (*GetStaticIntField)(JNIEnv*, jclass, jfieldID);
+    jlong       (*GetStaticLongField)(JNIEnv*, jclass, jfieldID);
+    jfloat      (*GetStaticFloatField)(JNIEnv*, jclass, jfieldID);
+    jdouble     (*GetStaticDoubleField)(JNIEnv*, jclass, jfieldID);
+
+    void        (*SetStaticObjectField)(JNIEnv*, jclass, jfieldID, jobject);
+    void        (*SetStaticBooleanField)(JNIEnv*, jclass, jfieldID, jboolean);
+    void        (*SetStaticByteField)(JNIEnv*, jclass, jfieldID, jbyte);
+    void        (*SetStaticCharField)(JNIEnv*, jclass, jfieldID, jchar);
+    void        (*SetStaticShortField)(JNIEnv*, jclass, jfieldID, jshort);
+    void        (*SetStaticIntField)(JNIEnv*, jclass, jfieldID, jint);
+    void        (*SetStaticLongField)(JNIEnv*, jclass, jfieldID, jlong);
+    void        (*SetStaticFloatField)(JNIEnv*, jclass, jfieldID, jfloat);
+    void        (*SetStaticDoubleField)(JNIEnv*, jclass, jfieldID, jdouble);
+
+    jstring     (*NewString)(JNIEnv*, const jchar*, jsize);
+    jsize       (*GetStringLength)(JNIEnv*, jstring);
+    const jchar* (*GetStringChars)(JNIEnv*, jstring, jboolean*);
+    void        (*ReleaseStringChars)(JNIEnv*, jstring, const jchar*);
+    jstring     (*NewStringUTF)(JNIEnv*, const char*);
+    jsize       (*GetStringUTFLength)(JNIEnv*, jstring);
+    /* JNI spec says this returns const jbyte*, but that's inconsistent */
+    const char* (*GetStringUTFChars)(JNIEnv*, jstring, jboolean*);
+    void        (*ReleaseStringUTFChars)(JNIEnv*, jstring, const char*);
+    jsize       (*GetArrayLength)(JNIEnv*, jarray);
+    jobjectArray (*NewObjectArray)(JNIEnv*, jsize, jclass, jobject);
+    jobject     (*GetObjectArrayElement)(JNIEnv*, jobjectArray, jsize);
+    void        (*SetObjectArrayElement)(JNIEnv*, jobjectArray, jsize, jobject);
+
+    jbooleanArray (*NewBooleanArray)(JNIEnv*, jsize);
+    jbyteArray    (*NewByteArray)(JNIEnv*, jsize);
+    jcharArray    (*NewCharArray)(JNIEnv*, jsize);
+    jshortArray   (*NewShortArray)(JNIEnv*, jsize);
+    jintArray     (*NewIntArray)(JNIEnv*, jsize);
+    jlongArray    (*NewLongArray)(JNIEnv*, jsize);
+    jfloatArray   (*NewFloatArray)(JNIEnv*, jsize);
+    jdoubleArray  (*NewDoubleArray)(JNIEnv*, jsize);
+
+    jboolean*   (*GetBooleanArrayElements)(JNIEnv*, jbooleanArray, jboolean*);
+    jbyte*      (*GetByteArrayElements)(JNIEnv*, jbyteArray, jboolean*);
+    jchar*      (*GetCharArrayElements)(JNIEnv*, jcharArray, jboolean*);
+    jshort*     (*GetShortArrayElements)(JNIEnv*, jshortArray, jboolean*);
+    jint*       (*GetIntArrayElements)(JNIEnv*, jintArray, jboolean*);
+    jlong*      (*GetLongArrayElements)(JNIEnv*, jlongArray, jboolean*);
+    jfloat*     (*GetFloatArrayElements)(JNIEnv*, jfloatArray, jboolean*);
+    jdouble*    (*GetDoubleArrayElements)(JNIEnv*, jdoubleArray, jboolean*);
+
+    void        (*ReleaseBooleanArrayElements)(JNIEnv*, jbooleanArray,
+                        jboolean*, jint);
+    void        (*ReleaseByteArrayElements)(JNIEnv*, jbyteArray,
+                        jbyte*, jint);
+    void        (*ReleaseCharArrayElements)(JNIEnv*, jcharArray,
+                        jchar*, jint);
+    void        (*ReleaseShortArrayElements)(JNIEnv*, jshortArray,
+                        jshort*, jint);
+    void        (*ReleaseIntArrayElements)(JNIEnv*, jintArray,
+                        jint*, jint);
+    void        (*ReleaseLongArrayElements)(JNIEnv*, jlongArray,
+                        jlong*, jint);
+    void        (*ReleaseFloatArrayElements)(JNIEnv*, jfloatArray,
+                        jfloat*, jint);
+    void        (*ReleaseDoubleArrayElements)(JNIEnv*, jdoubleArray,
+                        jdouble*, jint);
+
+    void        (*GetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
+                        jsize, jsize, jboolean*);
+    void        (*GetByteArrayRegion)(JNIEnv*, jbyteArray,
+                        jsize, jsize, jbyte*);
+    void        (*GetCharArrayRegion)(JNIEnv*, jcharArray,
+                        jsize, jsize, jchar*);
+    void        (*GetShortArrayRegion)(JNIEnv*, jshortArray,
+                        jsize, jsize, jshort*);
+    void        (*GetIntArrayRegion)(JNIEnv*, jintArray,
+                        jsize, jsize, jint*);
+    void        (*GetLongArrayRegion)(JNIEnv*, jlongArray,
+                        jsize, jsize, jlong*);
+    void        (*GetFloatArrayRegion)(JNIEnv*, jfloatArray,
+                        jsize, jsize, jfloat*);
+    void        (*GetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
+                        jsize, jsize, jdouble*);
+
+    /* spec shows these without const; some jni.h do, some don't */
+    void        (*SetBooleanArrayRegion)(JNIEnv*, jbooleanArray,
+                        jsize, jsize, const jboolean*);
+    void        (*SetByteArrayRegion)(JNIEnv*, jbyteArray,
+                        jsize, jsize, const jbyte*);
+    void        (*SetCharArrayRegion)(JNIEnv*, jcharArray,
+                        jsize, jsize, const jchar*);
+    void        (*SetShortArrayRegion)(JNIEnv*, jshortArray,
+                        jsize, jsize, const jshort*);
+    void        (*SetIntArrayRegion)(JNIEnv*, jintArray,
+                        jsize, jsize, const jint*);
+    void        (*SetLongArrayRegion)(JNIEnv*, jlongArray,
+                        jsize, jsize, const jlong*);
+    void        (*SetFloatArrayRegion)(JNIEnv*, jfloatArray,
+                        jsize, jsize, const jfloat*);
+    void        (*SetDoubleArrayRegion)(JNIEnv*, jdoubleArray,
+                        jsize, jsize, const jdouble*);
+
+    jint        (*RegisterNatives)(JNIEnv*, jclass, const JNINativeMethod*,
+                        jint);
+    jint        (*UnregisterNatives)(JNIEnv*, jclass);
+    jint        (*MonitorEnter)(JNIEnv*, jobject);
+    jint        (*MonitorExit)(JNIEnv*, jobject);
+    jint        (*GetJavaVM)(JNIEnv*, JavaVM**);
+
+    void        (*GetStringRegion)(JNIEnv*, jstring, jsize, jsize, jchar*);
+    void        (*GetStringUTFRegion)(JNIEnv*, jstring, jsize, jsize, char*);
+
+    void*       (*GetPrimitiveArrayCritical)(JNIEnv*, jarray, jboolean*);
+    void        (*ReleasePrimitiveArrayCritical)(JNIEnv*, jarray, void*, jint);
+
+    const jchar* (*GetStringCritical)(JNIEnv*, jstring, jboolean*);
+    void        (*ReleaseStringCritical)(JNIEnv*, jstring, const jchar*);
+
+    jweak       (*NewWeakGlobalRef)(JNIEnv*, jobject);
+    void        (*DeleteWeakGlobalRef)(JNIEnv*, jweak);
+
+    jboolean    (*ExceptionCheck)(JNIEnv*);
+
+    jobject     (*NewDirectByteBuffer)(JNIEnv*, void*, jlong);
+    void*       (*GetDirectBufferAddress)(JNIEnv*, jobject);
+    jlong       (*GetDirectBufferCapacity)(JNIEnv*, jobject);
+
+    /* added in JNI 1.6 */
+    jobjectRefType (*GetObjectRefType)(JNIEnv*, jobject);
+};
+
+/*
+ * C++ object wrapper.
+ *
+ * This is usually overlaid on a C struct whose first element is a
+ * JNINativeInterface*.  We rely somewhat on compiler behavior.
+ */
+struct _JNIEnv {
+    /* do not rename this; it does not seem to be entirely opaque */
+    const struct JNINativeInterface* functions;
+
+#if defined(__cplusplus)
+
+    jint GetVersion()
+    { return functions->GetVersion(this); }
+
+    jclass DefineClass(const char *name, jobject loader, const jbyte* buf,
+        jsize bufLen)
+    { return functions->DefineClass(this, name, loader, buf, bufLen); }
+
+    jclass FindClass(const char* name)
+    { return functions->FindClass(this, name); }
+
+    jmethodID FromReflectedMethod(jobject method)
+    { return functions->FromReflectedMethod(this, method); }
+
+    jfieldID FromReflectedField(jobject field)
+    { return functions->FromReflectedField(this, field); }
+
+    jobject ToReflectedMethod(jclass cls, jmethodID methodID, jboolean isStatic)
+    { return functions->ToReflectedMethod(this, cls, methodID, isStatic); }
+
+    jclass GetSuperclass(jclass clazz)
+    { return functions->GetSuperclass(this, clazz); }
+
+    jboolean IsAssignableFrom(jclass clazz1, jclass clazz2)
+    { return functions->IsAssignableFrom(this, clazz1, clazz2); }
+
+    jobject ToReflectedField(jclass cls, jfieldID fieldID, jboolean isStatic)
+    { return functions->ToReflectedField(this, cls, fieldID, isStatic); }
+
+    jint Throw(jthrowable obj)
+    { return functions->Throw(this, obj); }
+
+    jint ThrowNew(jclass clazz, const char* message)
+    { return functions->ThrowNew(this, clazz, message); }
+
+    jthrowable ExceptionOccurred()
+    { return functions->ExceptionOccurred(this); }
+
+    void ExceptionDescribe()
+    { functions->ExceptionDescribe(this); }
+
+    void ExceptionClear()
+    { functions->ExceptionClear(this); }
+
+    void FatalError(const char* msg)
+    { functions->FatalError(this, msg); }
+
+    jint PushLocalFrame(jint capacity)
+    { return functions->PushLocalFrame(this, capacity); }
+
+    jobject PopLocalFrame(jobject result)
+    { return functions->PopLocalFrame(this, result); }
+
+    jobject NewGlobalRef(jobject obj)
+    { return functions->NewGlobalRef(this, obj); }
+
+    void DeleteGlobalRef(jobject globalRef)
+    { functions->DeleteGlobalRef(this, globalRef); }
+
+    void DeleteLocalRef(jobject localRef)
+    { functions->DeleteLocalRef(this, localRef); }
+
+    jboolean IsSameObject(jobject ref1, jobject ref2)
+    { return functions->IsSameObject(this, ref1, ref2); }
+
+    jobject NewLocalRef(jobject ref)
+    { return functions->NewLocalRef(this, ref); }
+
+    jint EnsureLocalCapacity(jint capacity)
+    { return functions->EnsureLocalCapacity(this, capacity); }
+
+    jobject AllocObject(jclass clazz)
+    { return functions->AllocObject(this, clazz); }
+
+    jobject NewObject(jclass clazz, jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        jobject result = functions->NewObjectV(this, clazz, methodID, args);
+        va_end(args);
+        return result;
+    }
+
+    jobject NewObjectV(jclass clazz, jmethodID methodID, va_list args)
+    { return functions->NewObjectV(this, clazz, methodID, args); }
+
+    jobject NewObjectA(jclass clazz, jmethodID methodID, jvalue* args)
+    { return functions->NewObjectA(this, clazz, methodID, args); }
+
+    jclass GetObjectClass(jobject obj)
+    { return functions->GetObjectClass(this, obj); }
+
+    jboolean IsInstanceOf(jobject obj, jclass clazz)
+    { return functions->IsInstanceOf(this, obj, clazz); }
+
+    jmethodID GetMethodID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetMethodID(this, clazz, name, sig); }
+
+#define CALL_TYPE_METHOD(_jtype, _jname)                                    \
+    _jtype Call##_jname##Method(jobject obj, jmethodID methodID, ...)       \
+    {                                                                       \
+        _jtype result;                                                      \
+        va_list args;                                                       \
+        va_start(args, methodID);                                           \
+        result = functions->Call##_jname##MethodV(this, obj, methodID,      \
+                    args);                                                  \
+        va_end(args);                                                       \
+        return result;                                                      \
+    }
+#define CALL_TYPE_METHODV(_jtype, _jname)                                   \
+    _jtype Call##_jname##MethodV(jobject obj, jmethodID methodID,           \
+        va_list args)                                                       \
+    { return functions->Call##_jname##MethodV(this, obj, methodID, args); }
+#define CALL_TYPE_METHODA(_jtype, _jname)                                   \
+    _jtype Call##_jname##MethodA(jobject obj, jmethodID methodID,           \
+        jvalue* args)                                                       \
+    { return functions->Call##_jname##MethodA(this, obj, methodID, args); }
+
+#define CALL_TYPE(_jtype, _jname)                                           \
+    CALL_TYPE_METHOD(_jtype, _jname)                                        \
+    CALL_TYPE_METHODV(_jtype, _jname)                                       \
+    CALL_TYPE_METHODA(_jtype, _jname)
+
+    CALL_TYPE(jobject, Object)
+    CALL_TYPE(jboolean, Boolean)
+    CALL_TYPE(jbyte, Byte)
+    CALL_TYPE(jchar, Char)
+    CALL_TYPE(jshort, Short)
+    CALL_TYPE(jint, Int)
+    CALL_TYPE(jlong, Long)
+    CALL_TYPE(jfloat, Float)
+    CALL_TYPE(jdouble, Double)
+
+    void CallVoidMethod(jobject obj, jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        functions->CallVoidMethodV(this, obj, methodID, args);
+        va_end(args);
+    }
+    void CallVoidMethodV(jobject obj, jmethodID methodID, va_list args)
+    { functions->CallVoidMethodV(this, obj, methodID, args); }
+    void CallVoidMethodA(jobject obj, jmethodID methodID, jvalue* args)
+    { functions->CallVoidMethodA(this, obj, methodID, args); }
+
+#define CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                            \
+    _jtype CallNonvirtual##_jname##Method(jobject obj, jclass clazz,        \
+        jmethodID methodID, ...)                                            \
+    {                                                                       \
+        _jtype result;                                                      \
+        va_list args;                                                       \
+        va_start(args, methodID);                                           \
+        result = functions->CallNonvirtual##_jname##MethodV(this, obj,      \
+                    clazz, methodID, args);                                 \
+        va_end(args);                                                       \
+        return result;                                                      \
+    }
+#define CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                           \
+    _jtype CallNonvirtual##_jname##MethodV(jobject obj, jclass clazz,       \
+        jmethodID methodID, va_list args)                                   \
+    { return functions->CallNonvirtual##_jname##MethodV(this, obj, clazz,   \
+        methodID, args); }
+#define CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)                           \
+    _jtype CallNonvirtual##_jname##MethodA(jobject obj, jclass clazz,       \
+        jmethodID methodID, jvalue* args)                                   \
+    { return functions->CallNonvirtual##_jname##MethodA(this, obj, clazz,   \
+        methodID, args); }
+
+#define CALL_NONVIRT_TYPE(_jtype, _jname)                                   \
+    CALL_NONVIRT_TYPE_METHOD(_jtype, _jname)                                \
+    CALL_NONVIRT_TYPE_METHODV(_jtype, _jname)                               \
+    CALL_NONVIRT_TYPE_METHODA(_jtype, _jname)
+
+    CALL_NONVIRT_TYPE(jobject, Object)
+    CALL_NONVIRT_TYPE(jboolean, Boolean)
+    CALL_NONVIRT_TYPE(jbyte, Byte)
+    CALL_NONVIRT_TYPE(jchar, Char)
+    CALL_NONVIRT_TYPE(jshort, Short)
+    CALL_NONVIRT_TYPE(jint, Int)
+    CALL_NONVIRT_TYPE(jlong, Long)
+    CALL_NONVIRT_TYPE(jfloat, Float)
+    CALL_NONVIRT_TYPE(jdouble, Double)
+
+    void CallNonvirtualVoidMethod(jobject obj, jclass clazz,
+        jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args);
+        va_end(args);
+    }
+    void CallNonvirtualVoidMethodV(jobject obj, jclass clazz,
+        jmethodID methodID, va_list args)
+    { functions->CallNonvirtualVoidMethodV(this, obj, clazz, methodID, args); }
+    void CallNonvirtualVoidMethodA(jobject obj, jclass clazz,
+        jmethodID methodID, jvalue* args)
+    { functions->CallNonvirtualVoidMethodA(this, obj, clazz, methodID, args); }
+
+    jfieldID GetFieldID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetFieldID(this, clazz, name, sig); }
+
+    jobject GetObjectField(jobject obj, jfieldID fieldID)
+    { return functions->GetObjectField(this, obj, fieldID); }
+    jboolean GetBooleanField(jobject obj, jfieldID fieldID)
+    { return functions->GetBooleanField(this, obj, fieldID); }
+    jbyte GetByteField(jobject obj, jfieldID fieldID)
+    { return functions->GetByteField(this, obj, fieldID); }
+    jchar GetCharField(jobject obj, jfieldID fieldID)
+    { return functions->GetCharField(this, obj, fieldID); }
+    jshort GetShortField(jobject obj, jfieldID fieldID)
+    { return functions->GetShortField(this, obj, fieldID); }
+    jint GetIntField(jobject obj, jfieldID fieldID)
+    { return functions->GetIntField(this, obj, fieldID); }
+    jlong GetLongField(jobject obj, jfieldID fieldID)
+    { return functions->GetLongField(this, obj, fieldID); }
+    jfloat GetFloatField(jobject obj, jfieldID fieldID)
+    { return functions->GetFloatField(this, obj, fieldID); }
+    jdouble GetDoubleField(jobject obj, jfieldID fieldID)
+    { return functions->GetDoubleField(this, obj, fieldID); }
+
+    void SetObjectField(jobject obj, jfieldID fieldID, jobject value)
+    { functions->SetObjectField(this, obj, fieldID, value); }
+    void SetBooleanField(jobject obj, jfieldID fieldID, jboolean value)
+    { functions->SetBooleanField(this, obj, fieldID, value); }
+    void SetByteField(jobject obj, jfieldID fieldID, jbyte value)
+    { functions->SetByteField(this, obj, fieldID, value); }
+    void SetCharField(jobject obj, jfieldID fieldID, jchar value)
+    { functions->SetCharField(this, obj, fieldID, value); }
+    void SetShortField(jobject obj, jfieldID fieldID, jshort value)
+    { functions->SetShortField(this, obj, fieldID, value); }
+    void SetIntField(jobject obj, jfieldID fieldID, jint value)
+    { functions->SetIntField(this, obj, fieldID, value); }
+    void SetLongField(jobject obj, jfieldID fieldID, jlong value)
+    { functions->SetLongField(this, obj, fieldID, value); }
+    void SetFloatField(jobject obj, jfieldID fieldID, jfloat value)
+    { functions->SetFloatField(this, obj, fieldID, value); }
+    void SetDoubleField(jobject obj, jfieldID fieldID, jdouble value)
+    { functions->SetDoubleField(this, obj, fieldID, value); }
+
+    jmethodID GetStaticMethodID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetStaticMethodID(this, clazz, name, sig); }
+
+#define CALL_STATIC_TYPE_METHOD(_jtype, _jname)                             \
+    _jtype CallStatic##_jname##Method(jclass clazz, jmethodID methodID,     \
+        ...)                                                                \
+    {                                                                       \
+        _jtype result;                                                      \
+        va_list args;                                                       \
+        va_start(args, methodID);                                           \
+        result = functions->CallStatic##_jname##MethodV(this, clazz,        \
+                    methodID, args);                                        \
+        va_end(args);                                                       \
+        return result;                                                      \
+    }
+#define CALL_STATIC_TYPE_METHODV(_jtype, _jname)                            \
+    _jtype CallStatic##_jname##MethodV(jclass clazz, jmethodID methodID,    \
+        va_list args)                                                       \
+    { return functions->CallStatic##_jname##MethodV(this, clazz, methodID,  \
+        args); }
+#define CALL_STATIC_TYPE_METHODA(_jtype, _jname)                            \
+    _jtype CallStatic##_jname##MethodA(jclass clazz, jmethodID methodID,    \
+        jvalue* args)                                                       \
+    { return functions->CallStatic##_jname##MethodA(this, clazz, methodID,  \
+        args); }
+
+#define CALL_STATIC_TYPE(_jtype, _jname)                                    \
+    CALL_STATIC_TYPE_METHOD(_jtype, _jname)                                 \
+    CALL_STATIC_TYPE_METHODV(_jtype, _jname)                                \
+    CALL_STATIC_TYPE_METHODA(_jtype, _jname)
+
+    CALL_STATIC_TYPE(jobject, Object)
+    CALL_STATIC_TYPE(jboolean, Boolean)
+    CALL_STATIC_TYPE(jbyte, Byte)
+    CALL_STATIC_TYPE(jchar, Char)
+    CALL_STATIC_TYPE(jshort, Short)
+    CALL_STATIC_TYPE(jint, Int)
+    CALL_STATIC_TYPE(jlong, Long)
+    CALL_STATIC_TYPE(jfloat, Float)
+    CALL_STATIC_TYPE(jdouble, Double)
+
+    void CallStaticVoidMethod(jclass clazz, jmethodID methodID, ...)
+    {
+        va_list args;
+        va_start(args, methodID);
+        functions->CallStaticVoidMethodV(this, clazz, methodID, args);
+        va_end(args);
+    }
+    void CallStaticVoidMethodV(jclass clazz, jmethodID methodID, va_list args)
+    { functions->CallStaticVoidMethodV(this, clazz, methodID, args); }
+    void CallStaticVoidMethodA(jclass clazz, jmethodID methodID, jvalue* args)
+    { functions->CallStaticVoidMethodA(this, clazz, methodID, args); }
+
+    jfieldID GetStaticFieldID(jclass clazz, const char* name, const char* sig)
+    { return functions->GetStaticFieldID(this, clazz, name, sig); }
+
+    jobject GetStaticObjectField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticObjectField(this, clazz, fieldID); }
+    jboolean GetStaticBooleanField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticBooleanField(this, clazz, fieldID); }
+    jbyte GetStaticByteField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticByteField(this, clazz, fieldID); }
+    jchar GetStaticCharField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticCharField(this, clazz, fieldID); }
+    jshort GetStaticShortField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticShortField(this, clazz, fieldID); }
+    jint GetStaticIntField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticIntField(this, clazz, fieldID); }
+    jlong GetStaticLongField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticLongField(this, clazz, fieldID); }
+    jfloat GetStaticFloatField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticFloatField(this, clazz, fieldID); }
+    jdouble GetStaticDoubleField(jclass clazz, jfieldID fieldID)
+    { return functions->GetStaticDoubleField(this, clazz, fieldID); }
+
+    void SetStaticObjectField(jclass clazz, jfieldID fieldID, jobject value)
+    { functions->SetStaticObjectField(this, clazz, fieldID, value); }
+    void SetStaticBooleanField(jclass clazz, jfieldID fieldID, jboolean value)
+    { functions->SetStaticBooleanField(this, clazz, fieldID, value); }
+    void SetStaticByteField(jclass clazz, jfieldID fieldID, jbyte value)
+    { functions->SetStaticByteField(this, clazz, fieldID, value); }
+    void SetStaticCharField(jclass clazz, jfieldID fieldID, jchar value)
+    { functions->SetStaticCharField(this, clazz, fieldID, value); }
+    void SetStaticShortField(jclass clazz, jfieldID fieldID, jshort value)
+    { functions->SetStaticShortField(this, clazz, fieldID, value); }
+    void SetStaticIntField(jclass clazz, jfieldID fieldID, jint value)
+    { functions->SetStaticIntField(this, clazz, fieldID, value); }
+    void SetStaticLongField(jclass clazz, jfieldID fieldID, jlong value)
+    { functions->SetStaticLongField(this, clazz, fieldID, value); }
+    void SetStaticFloatField(jclass clazz, jfieldID fieldID, jfloat value)
+    { functions->SetStaticFloatField(this, clazz, fieldID, value); }
+    void SetStaticDoubleField(jclass clazz, jfieldID fieldID, jdouble value)
+    { functions->SetStaticDoubleField(this, clazz, fieldID, value); }
+
+    jstring NewString(const jchar* unicodeChars, jsize len)
+    { return functions->NewString(this, unicodeChars, len); }
+
+    jsize GetStringLength(jstring string)
+    { return functions->GetStringLength(this, string); }
+
+    const jchar* GetStringChars(jstring string, jboolean* isCopy)
+    { return functions->GetStringChars(this, string, isCopy); }
+
+    void ReleaseStringChars(jstring string, const jchar* chars)
+    { functions->ReleaseStringChars(this, string, chars); }
+
+    jstring NewStringUTF(const char* bytes)
+    { return functions->NewStringUTF(this, bytes); }
+
+    jsize GetStringUTFLength(jstring string)
+    { return functions->GetStringUTFLength(this, string); }
+
+    const char* GetStringUTFChars(jstring string, jboolean* isCopy)
+    { return functions->GetStringUTFChars(this, string, isCopy); }
+
+    void ReleaseStringUTFChars(jstring string, const char* utf)
+    { functions->ReleaseStringUTFChars(this, string, utf); }
+
+    jsize GetArrayLength(jarray array)
+    { return functions->GetArrayLength(this, array); }
+
+    jobjectArray NewObjectArray(jsize length, jclass elementClass,
+        jobject initialElement)
+    { return functions->NewObjectArray(this, length, elementClass,
+        initialElement); }
+
+    jobject GetObjectArrayElement(jobjectArray array, jsize index)
+    { return functions->GetObjectArrayElement(this, array, index); }
+
+    void SetObjectArrayElement(jobjectArray array, jsize index, jobject value)
+    { functions->SetObjectArrayElement(this, array, index, value); }
+
+    jbooleanArray NewBooleanArray(jsize length)
+    { return functions->NewBooleanArray(this, length); }
+    jbyteArray NewByteArray(jsize length)
+    { return functions->NewByteArray(this, length); }
+    jcharArray NewCharArray(jsize length)
+    { return functions->NewCharArray(this, length); }
+    jshortArray NewShortArray(jsize length)
+    { return functions->NewShortArray(this, length); }
+    jintArray NewIntArray(jsize length)
+    { return functions->NewIntArray(this, length); }
+    jlongArray NewLongArray(jsize length)
+    { return functions->NewLongArray(this, length); }
+    jfloatArray NewFloatArray(jsize length)
+    { return functions->NewFloatArray(this, length); }
+    jdoubleArray NewDoubleArray(jsize length)
+    { return functions->NewDoubleArray(this, length); }
+
+    jboolean* GetBooleanArrayElements(jbooleanArray array, jboolean* isCopy)
+    { return functions->GetBooleanArrayElements(this, array, isCopy); }
+    jbyte* GetByteArrayElements(jbyteArray array, jboolean* isCopy)
+    { return functions->GetByteArrayElements(this, array, isCopy); }
+    jchar* GetCharArrayElements(jcharArray array, jboolean* isCopy)
+    { return functions->GetCharArrayElements(this, array, isCopy); }
+    jshort* GetShortArrayElements(jshortArray array, jboolean* isCopy)
+    { return functions->GetShortArrayElements(this, array, isCopy); }
+    jint* GetIntArrayElements(jintArray array, jboolean* isCopy)
+    { return functions->GetIntArrayElements(this, array, isCopy); }
+    jlong* GetLongArrayElements(jlongArray array, jboolean* isCopy)
+    { return functions->GetLongArrayElements(this, array, isCopy); }
+    jfloat* GetFloatArrayElements(jfloatArray array, jboolean* isCopy)
+    { return functions->GetFloatArrayElements(this, array, isCopy); }
+    jdouble* GetDoubleArrayElements(jdoubleArray array, jboolean* isCopy)
+    { return functions->GetDoubleArrayElements(this, array, isCopy); }
+
+    void ReleaseBooleanArrayElements(jbooleanArray array, jboolean* elems,
+        jint mode)
+    { functions->ReleaseBooleanArrayElements(this, array, elems, mode); }
+    void ReleaseByteArrayElements(jbyteArray array, jbyte* elems,
+        jint mode)
+    { functions->ReleaseByteArrayElements(this, array, elems, mode); }
+    void ReleaseCharArrayElements(jcharArray array, jchar* elems,
+        jint mode)
+    { functions->ReleaseCharArrayElements(this, array, elems, mode); }
+    void ReleaseShortArrayElements(jshortArray array, jshort* elems,
+        jint mode)
+    { functions->ReleaseShortArrayElements(this, array, elems, mode); }
+    void ReleaseIntArrayElements(jintArray array, jint* elems,
+        jint mode)
+    { functions->ReleaseIntArrayElements(this, array, elems, mode); }
+    void ReleaseLongArrayElements(jlongArray array, jlong* elems,
+        jint mode)
+    { functions->ReleaseLongArrayElements(this, array, elems, mode); }
+    void ReleaseFloatArrayElements(jfloatArray array, jfloat* elems,
+        jint mode)
+    { functions->ReleaseFloatArrayElements(this, array, elems, mode); }
+    void ReleaseDoubleArrayElements(jdoubleArray array, jdouble* elems,
+        jint mode)
+    { functions->ReleaseDoubleArrayElements(this, array, elems, mode); }
+
+    void GetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
+        jboolean* buf)
+    { functions->GetBooleanArrayRegion(this, array, start, len, buf); }
+    void GetByteArrayRegion(jbyteArray array, jsize start, jsize len,
+        jbyte* buf)
+    { functions->GetByteArrayRegion(this, array, start, len, buf); }
+    void GetCharArrayRegion(jcharArray array, jsize start, jsize len,
+        jchar* buf)
+    { functions->GetCharArrayRegion(this, array, start, len, buf); }
+    void GetShortArrayRegion(jshortArray array, jsize start, jsize len,
+        jshort* buf)
+    { functions->GetShortArrayRegion(this, array, start, len, buf); }
+    void GetIntArrayRegion(jintArray array, jsize start, jsize len,
+        jint* buf)
+    { functions->GetIntArrayRegion(this, array, start, len, buf); }
+    void GetLongArrayRegion(jlongArray array, jsize start, jsize len,
+        jlong* buf)
+    { functions->GetLongArrayRegion(this, array, start, len, buf); }
+    void GetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
+        jfloat* buf)
+    { functions->GetFloatArrayRegion(this, array, start, len, buf); }
+    void GetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
+        jdouble* buf)
+    { functions->GetDoubleArrayRegion(this, array, start, len, buf); }
+
+    void SetBooleanArrayRegion(jbooleanArray array, jsize start, jsize len,
+        const jboolean* buf)
+    { functions->SetBooleanArrayRegion(this, array, start, len, buf); }
+    void SetByteArrayRegion(jbyteArray array, jsize start, jsize len,
+        const jbyte* buf)
+    { functions->SetByteArrayRegion(this, array, start, len, buf); }
+    void SetCharArrayRegion(jcharArray array, jsize start, jsize len,
+        const jchar* buf)
+    { functions->SetCharArrayRegion(this, array, start, len, buf); }
+    void SetShortArrayRegion(jshortArray array, jsize start, jsize len,
+        const jshort* buf)
+    { functions->SetShortArrayRegion(this, array, start, len, buf); }
+    void SetIntArrayRegion(jintArray array, jsize start, jsize len,
+        const jint* buf)
+    { functions->SetIntArrayRegion(this, array, start, len, buf); }
+    void SetLongArrayRegion(jlongArray array, jsize start, jsize len,
+        const jlong* buf)
+    { functions->SetLongArrayRegion(this, array, start, len, buf); }
+    void SetFloatArrayRegion(jfloatArray array, jsize start, jsize len,
+        const jfloat* buf)
+    { functions->SetFloatArrayRegion(this, array, start, len, buf); }
+    void SetDoubleArrayRegion(jdoubleArray array, jsize start, jsize len,
+        const jdouble* buf)
+    { functions->SetDoubleArrayRegion(this, array, start, len, buf); }
+
+    jint RegisterNatives(jclass clazz, const JNINativeMethod* methods,
+        jint nMethods)
+    { return functions->RegisterNatives(this, clazz, methods, nMethods); }
+
+    jint UnregisterNatives(jclass clazz)
+    { return functions->UnregisterNatives(this, clazz); }
+
+    jint MonitorEnter(jobject obj)
+    { return functions->MonitorEnter(this, obj); }
+
+    jint MonitorExit(jobject obj)
+    { return functions->MonitorExit(this, obj); }
+
+    jint GetJavaVM(JavaVM** vm)
+    { return functions->GetJavaVM(this, vm); }
+
+    void GetStringRegion(jstring str, jsize start, jsize len, jchar* buf)
+    { functions->GetStringRegion(this, str, start, len, buf); }
+
+    void GetStringUTFRegion(jstring str, jsize start, jsize len, char* buf)
+    { return functions->GetStringUTFRegion(this, str, start, len, buf); }
+
+    void* GetPrimitiveArrayCritical(jarray array, jboolean* isCopy)
+    { return functions->GetPrimitiveArrayCritical(this, array, isCopy); }
+
+    void ReleasePrimitiveArrayCritical(jarray array, void* carray, jint mode)
+    { functions->ReleasePrimitiveArrayCritical(this, array, carray, mode); }
+
+    const jchar* GetStringCritical(jstring string, jboolean* isCopy)
+    { return functions->GetStringCritical(this, string, isCopy); }
+
+    void ReleaseStringCritical(jstring string, const jchar* carray)
+    { functions->ReleaseStringCritical(this, string, carray); }
+
+    jweak NewWeakGlobalRef(jobject obj)
+    { return functions->NewWeakGlobalRef(this, obj); }
+
+    void DeleteWeakGlobalRef(jweak obj)
+    { functions->DeleteWeakGlobalRef(this, obj); }
+
+    jboolean ExceptionCheck()
+    { return functions->ExceptionCheck(this); }
+
+    jobject NewDirectByteBuffer(void* address, jlong capacity)
+    { return functions->NewDirectByteBuffer(this, address, capacity); }
+
+    void* GetDirectBufferAddress(jobject buf)
+    { return functions->GetDirectBufferAddress(this, buf); }
+
+    jlong GetDirectBufferCapacity(jobject buf)
+    { return functions->GetDirectBufferCapacity(this, buf); }
+
+    /* added in JNI 1.6 */
+    jobjectRefType GetObjectRefType(jobject obj)
+    { return functions->GetObjectRefType(this, obj); }
+#endif /*__cplusplus*/
+};
+
+
+/*
+ * JNI invocation interface.
+ */
+struct JNIInvokeInterface {
+    void*       reserved0;
+    void*       reserved1;
+    void*       reserved2;
+ 
+    jint        (*DestroyJavaVM)(JavaVM*);
+    jint        (*AttachCurrentThread)(JavaVM*, JNIEnv**, void*);
+    jint        (*DetachCurrentThread)(JavaVM*);
+    jint        (*GetEnv)(JavaVM*, void**, jint);
+    jint        (*AttachCurrentThreadAsDaemon)(JavaVM*, JNIEnv**, void*);
+};
+
+/*
+ * C++ version.
+ */
+struct _JavaVM {
+    const struct JNIInvokeInterface* functions;
+
+#if defined(__cplusplus)
+    jint DestroyJavaVM()
+    { return functions->DestroyJavaVM(this); }
+    jint AttachCurrentThread(JNIEnv** p_env, void* thr_args)
+    { return functions->AttachCurrentThread(this, p_env, thr_args); }
+    jint DetachCurrentThread()
+    { return functions->DetachCurrentThread(this); }
+    jint GetEnv(void** env, jint version)
+    { return functions->GetEnv(this, env, version); }
+    jint AttachCurrentThreadAsDaemon(JNIEnv** p_env, void* thr_args)
+    { return functions->AttachCurrentThreadAsDaemon(this, p_env, thr_args); }
+#endif /*__cplusplus*/
+};
+
+struct JavaVMAttachArgs {
+    jint        version;    /* must be >= JNI_VERSION_1_2 */
+    const char* name;       /* NULL or name of thread as modified UTF-8 str */
+    jobject     group;      /* global ref of a ThreadGroup object, or NULL */
+};
+typedef struct JavaVMAttachArgs JavaVMAttachArgs;
+
+/*
+ * JNI 1.2+ initialization.  (As of 1.6, the pre-1.2 structures are no
+ * longer supported.)
+ */
+typedef struct JavaVMOption {
+    const char* optionString;
+    void*       extraInfo;
+} JavaVMOption;
+
+typedef struct JavaVMInitArgs {
+    jint        version;    /* use JNI_VERSION_1_2 or later */
+
+    jint        nOptions;
+    JavaVMOption* options;
+    jboolean    ignoreUnrecognized;
+} JavaVMInitArgs;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * VM initialization functions.
+ *
+ * Note these are the only symbols exported for JNI by the VM.
+ */
+jint JNI_GetDefaultJavaVMInitArgs(void*);
+jint JNI_CreateJavaVM(JavaVM**, JNIEnv**, void*);
+jint JNI_GetCreatedJavaVMs(JavaVM**, jsize, jsize*);
+
+/*
+ * Prototypes for functions exported by loadable shared libs.  These are
+ * called by JNI, not provided by JNI.
+ */
+jint JNI_OnLoad(JavaVM* vm, void* reserved);
+void JNI_OnUnload(JavaVM* vm, void* reserved);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+/*
+ * Manifest constants.
+ */
+#define JNI_FALSE   0
+#define JNI_TRUE    1
+
+#define JNI_VERSION_1_1 0x00010001
+#define JNI_VERSION_1_2 0x00010002
+#define JNI_VERSION_1_4 0x00010004
+#define JNI_VERSION_1_6 0x00010006
+
+#define JNI_OK          (0)         /* no error */
+#define JNI_ERR         (-1)        /* generic error */
+#define JNI_EDETACHED   (-2)        /* thread detached from the VM */
+#define JNI_EVERSION    (-3)        /* JNI version error */
+
+#define JNI_COMMIT      1           /* copy content, do not free buffer */
+#define JNI_ABORT       2           /* free buffer w/o copying back */
+
+/* need these for Windows-aware headers */
+#define JNIIMPORT
+#define JNIEXPORT
+#define JNICALL
+
+#endif /*_JNI_H*/
diff --git a/src/fakejvm/jvm.c b/src/fakejvm/jvm.c
new file mode 100644
index 0000000..3ce783b
--- /dev/null
+++ b/src/fakejvm/jvm.c
@@ -0,0 +1,1778 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <stdbool.h>
+#include <assert.h>
+#include "jvm.h"
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
+#define container_of(ptr, type, member) ((type *)((char *)(1 ? (ptr) : &((type *)0)->member) - offsetof(type, member)))
+
+struct jstring {
+   char *data;
+};
+
+struct array {
+   void *data;
+   long element_size;
+   long length; // in elements
+};
+
+struct jclass {
+   char *name;
+};
+
+struct _jmethodID {
+   jclass clazz;
+   char *name;
+   char *sig;
+};
+
+struct jvm*
+jnienv_get_jvm(JNIEnv *env)
+{
+   return container_of(env, struct jvm, env);
+}
+
+struct jvm*
+javavm_get_jvm(JavaVM *vm)
+{
+   return container_of(vm, struct jvm, vm);
+}
+
+static jint
+JNIEnv_GetVersion(JNIEnv * p0)
+{
+   return 0;
+}
+
+static jclass
+JNIEnv_DefineClass(JNIEnv* p0, const char* p1, jobject p2, const jbyte* p3, jsize p4)
+{
+   return NULL;
+}
+
+static jclass
+JNIEnv_FindClass(JNIEnv* p0, const char* p1)
+{
+   struct jclass *class = malloc(sizeof(struct jclass));
+   class->name = strdup(p1);
+   return class;
+}
+
+static jmethodID
+JNIEnv_FromReflectedMethod(JNIEnv* p0, jobject p1)
+{
+   return NULL;
+}
+
+static jfieldID
+JNIEnv_FromReflectedField(JNIEnv* p0, jobject p1)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_ToReflectedMethod(JNIEnv* p0, jclass p1, jmethodID p2, jboolean p3)
+{
+   return NULL;
+}
+
+static jclass
+JNIEnv_GetSuperclass(JNIEnv* p0, jclass p1)
+{
+   return NULL;
+}
+
+static jboolean
+JNIEnv_IsAssignableFrom(JNIEnv* p0, jclass p1, jclass p2)
+{
+   return 0;
+}
+
+static jobject
+JNIEnv_ToReflectedField(JNIEnv* p0, jclass p1, jfieldID p2, jboolean p3)
+{
+   return NULL;
+}
+
+static jint
+JNIEnv_Throw(JNIEnv* p0, jthrowable p1)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_ThrowNew(JNIEnv * p0, jclass p1, const char * p2)
+{
+   return 0;
+}
+
+static jthrowable
+JNIEnv_ExceptionOccurred(JNIEnv* p0)
+{
+   return NULL;
+}
+
+static void
+JNIEnv_ExceptionDescribe(JNIEnv* p0)
+{
+}
+
+static void
+JNIEnv_ExceptionClear(JNIEnv* p0)
+{
+}
+
+static void
+JNIEnv_FatalError(JNIEnv* p0, const char* p1)
+{
+}
+
+static jint
+JNIEnv_PushLocalFrame(JNIEnv* p0, jint p1)
+{
+   return 0;
+}
+
+static jobject
+JNIEnv_PopLocalFrame(JNIEnv* p0, jobject p1)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_NewGlobalRef(JNIEnv* p0, jobject p1)
+{
+   return p1;
+}
+
+static void
+JNIEnv_DeleteGlobalRef(JNIEnv* p0, jobject p1)
+{
+}
+
+static void
+JNIEnv_DeleteLocalRef(JNIEnv* p0, jobject p1)
+{
+}
+
+static jboolean
+JNIEnv_IsSameObject(JNIEnv* p0, jobject p1, jobject p2)
+{
+   return 0;
+}
+
+static jobject
+JNIEnv_NewLocalRef(JNIEnv* p0, jobject p1)
+{
+   return NULL;
+}
+
+static jint
+JNIEnv_EnsureLocalCapacity(JNIEnv* p0, jint p1)
+{
+   return 0;
+}
+
+static jobject
+JNIEnv_AllocObject(JNIEnv* p0, jclass p1)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_NewObject(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_NewObjectV(JNIEnv *env, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jobject
+JNIEnv_NewObjectA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return NULL;
+}
+
+static jclass
+JNIEnv_GetObjectClass(JNIEnv* env, jobject p1)
+{
+   return 0;
+}
+
+static jboolean
+JNIEnv_IsInstanceOf(JNIEnv* p0, jobject p1, jclass p2)
+{
+   return 0;
+}
+
+static jmethodID
+jnienv_make_method(jclass clazz, const char *name, const char *sig)
+{
+   jmethodID id = malloc(sizeof(struct _jmethodID));
+   id->clazz = clazz;
+   id->name = strdup(name);
+   id->sig = strdup(sig);
+   return id;
+}
+
+static jmethodID
+JNIEnv_GetMethodID(JNIEnv* p0, jclass clazz, const char* name, const char* sig)
+{
+   return jnienv_make_method(clazz, name, sig);
+}
+
+static jobject
+JNIEnv_CallObjectMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_CallObjectMethodV(JNIEnv *env, jobject p1, jmethodID p2, va_list p3)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_CallObjectMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return NULL;
+}
+
+static jboolean
+JNIEnv_CallBooleanMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jboolean
+JNIEnv_CallBooleanMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jboolean
+JNIEnv_CallBooleanMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallByteMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallByteMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallByteMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallCharMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallCharMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallCharMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallShortMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallShortMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallShortMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallIntMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallIntMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallIntMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallLongMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallLongMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallLongMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallFloatMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallFloatMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallFloatMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallDoubleMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallDoubleMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallDoubleMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static void
+JNIEnv_CallVoidMethod(JNIEnv* p0, jobject p1, jmethodID p2, ...)
+{
+}
+
+static void
+JNIEnv_CallVoidMethodV(JNIEnv* p0, jobject p1, jmethodID p2, va_list p3)
+{
+}
+
+static void
+JNIEnv_CallVoidMethodA(JNIEnv* p0, jobject p1, jmethodID p2, jvalue* p3)
+{
+}
+
+static jobject
+JNIEnv_CallNonvirtualObjectMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_CallNonvirtualObjectMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_CallNonvirtualObjectMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return NULL;
+}
+
+static jboolean
+JNIEnv_CallNonvirtualBooleanMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jboolean
+JNIEnv_CallNonvirtualBooleanMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jboolean
+JNIEnv_CallNonvirtualBooleanMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallNonvirtualByteMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallNonvirtualByteMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallNonvirtualByteMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallNonvirtualCharMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallNonvirtualCharMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallNonvirtualCharMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallNonvirtualShortMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallNonvirtualShortMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallNonvirtualShortMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallNonvirtualIntMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallNonvirtualIntMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallNonvirtualIntMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallNonvirtualLongMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallNonvirtualLongMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallNonvirtualLongMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallNonvirtualFloatMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallNonvirtualFloatMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallNonvirtualFloatMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallNonvirtualDoubleMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallNonvirtualDoubleMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallNonvirtualDoubleMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+   return 0;
+}
+
+static void
+JNIEnv_CallNonvirtualVoidMethod(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, ...)
+{
+}
+
+static void
+JNIEnv_CallNonvirtualVoidMethodV(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, va_list p4)
+{
+}
+
+static void
+JNIEnv_CallNonvirtualVoidMethodA(JNIEnv* p0, jobject p1, jclass p2, jmethodID p3, jvalue* p4)
+{
+}
+
+static jfieldID
+jnienv_make_fieldid(jclass clazz, const char *name, const char *sig)
+{
+   return (jfieldID)jnienv_make_method(clazz,name,sig);
+}
+
+static jfieldID
+JNIEnv_GetFieldID(JNIEnv* p0, jclass clazz, const char* name, const char* sig)
+{
+   struct jclass *class = (struct jclass*)clazz;
+   return jnienv_make_fieldid(clazz, name, sig);
+}
+
+static jobject
+JNIEnv_GetObjectField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return NULL;
+}
+
+static jboolean
+JNIEnv_GetBooleanField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_GetByteField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_GetCharField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_GetShortField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_GetIntField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_GetLongField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_GetFloatField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_GetDoubleField(JNIEnv* p0, jobject p1, jfieldID p2)
+{
+   return 0;
+}
+
+static void
+JNIEnv_SetObjectField(JNIEnv* p0, jobject p1, jfieldID p2, jobject p3)
+{
+}
+
+static void
+JNIEnv_SetBooleanField(JNIEnv* p0, jobject p1, jfieldID p2, jboolean p3)
+{
+}
+
+static void
+JNIEnv_SetByteField(JNIEnv* p0, jobject p1, jfieldID p2, jbyte p3)
+{
+}
+
+static void
+JNIEnv_SetCharField(JNIEnv* p0, jobject p1, jfieldID p2, jchar p3)
+{
+}
+
+static void
+JNIEnv_SetShortField(JNIEnv* p0, jobject p1, jfieldID p2, jshort p3)
+{
+}
+
+static void
+JNIEnv_SetIntField(JNIEnv* p0, jobject p1, jfieldID p2, jint p3)
+{
+}
+
+static void
+JNIEnv_SetLongField(JNIEnv* p0, jobject p1, jfieldID p2, jlong p3)
+{
+}
+
+static void
+JNIEnv_SetFloatField(JNIEnv* p0, jobject p1, jfieldID p2, jfloat p3)
+{
+}
+
+static void
+JNIEnv_SetDoubleField(JNIEnv* p0, jobject p1, jfieldID p2, jdouble p3)
+{
+}
+
+static jmethodID
+JNIEnv_GetStaticMethodID(JNIEnv* p0, jclass clazz, const char* name, const char* sig)
+{
+   return jnienv_make_method(clazz, name, sig);
+}
+
+static jobject
+JNIEnv_CallStaticObjectMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_CallStaticObjectMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_CallStaticObjectMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return NULL;
+}
+
+static jboolean
+JNIEnv_CallStaticBooleanMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jboolean
+JNIEnv_CallStaticBooleanMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jboolean
+JNIEnv_CallStaticBooleanMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallStaticByteMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallStaticByteMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_CallStaticByteMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallStaticCharMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallStaticCharMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_CallStaticCharMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallStaticShortMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallStaticShortMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_CallStaticShortMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallStaticIntMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallStaticIntMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_CallStaticIntMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallStaticLongMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallStaticLongMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_CallStaticLongMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallStaticFloatMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallStaticFloatMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_CallStaticFloatMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallStaticDoubleMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallStaticDoubleMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_CallStaticDoubleMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+   return 0;
+}
+
+static void
+JNIEnv_CallStaticVoidMethod(JNIEnv* p0, jclass p1, jmethodID p2, ...)
+{
+}
+
+static void
+JNIEnv_CallStaticVoidMethodV(JNIEnv* p0, jclass p1, jmethodID p2, va_list p3)
+{
+}
+
+static void
+JNIEnv_CallStaticVoidMethodA(JNIEnv* p0, jclass p1, jmethodID p2, jvalue* p3)
+{
+}
+
+static jfieldID
+JNIEnv_GetStaticFieldID(JNIEnv* p0, jclass clazz, const char* name, const char* sig)
+{
+   struct jclass *class = (struct jclass*)clazz;
+   return jnienv_make_fieldid(clazz, name, sig);
+}
+
+static jobject
+JNIEnv_GetStaticObjectField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return NULL;
+}
+
+static jboolean
+JNIEnv_GetStaticBooleanField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jbyte
+JNIEnv_GetStaticByteField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jchar
+JNIEnv_GetStaticCharField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jshort
+JNIEnv_GetStaticShortField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_GetStaticIntField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jlong
+JNIEnv_GetStaticLongField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jfloat
+JNIEnv_GetStaticFloatField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static jdouble
+JNIEnv_GetStaticDoubleField(JNIEnv* p0, jclass p1, jfieldID p2)
+{
+   return 0;
+}
+
+static void
+JNIEnv_SetStaticObjectField(JNIEnv* p0, jclass p1, jfieldID p2, jobject p3)
+{
+}
+
+static void
+JNIEnv_SetStaticBooleanField(JNIEnv* p0, jclass p1, jfieldID p2, jboolean p3)
+{
+}
+
+static void
+JNIEnv_SetStaticByteField(JNIEnv* p0, jclass p1, jfieldID p2, jbyte p3)
+{
+}
+
+static void
+JNIEnv_SetStaticCharField(JNIEnv* p0, jclass p1, jfieldID p2, jchar p3)
+{
+}
+
+static void
+JNIEnv_SetStaticShortField(JNIEnv* p0, jclass p1, jfieldID p2, jshort p3)
+{
+}
+
+static void
+JNIEnv_SetStaticIntField(JNIEnv* p0, jclass p1, jfieldID p2, jint p3)
+{
+}
+
+static void
+JNIEnv_SetStaticLongField(JNIEnv* p0, jclass p1, jfieldID p2, jlong p3)
+{
+}
+
+static void
+JNIEnv_SetStaticFloatField(JNIEnv* p0, jclass p1, jfieldID p2, jfloat p3)
+{
+}
+
+static void
+JNIEnv_SetStaticDoubleField(JNIEnv* p0, jclass p1, jfieldID p2, jdouble p3)
+{
+}
+
+static jstring
+JNIEnv_NewString(JNIEnv* p0, const jchar* p1, jsize p2)
+{
+   char *str = calloc(1, p2 + 1);
+   memcpy(str, p1, p2);
+   struct jstring *result = malloc(sizeof(struct jstring));
+   result->data = str;
+   return result;
+}
+
+static jsize
+JNIEnv_GetStringLength(JNIEnv* p0, jstring p1)
+{
+   return 0;
+}
+
+const jchar*
+JNIEnv_GetStringChars(JNIEnv* p0, jstring p1, jboolean* p2)
+{
+   return NULL;
+}
+
+static void
+JNIEnv_ReleaseStringChars(JNIEnv* p0, jstring p1, const jchar* p2)
+{
+}
+
+static jstring
+JNIEnv_NewStringUTF(JNIEnv* p0, const char* p1)
+{
+   struct jstring *result = malloc(sizeof(struct jstring));
+   result->data = strdup((p1 ? p1 : "(null)"));
+   return result;
+}
+
+static jsize
+JNIEnv_GetStringUTFLength(JNIEnv* p0, jstring p1)
+{
+   struct jstring *result = p1;
+   return strlen(result->data);
+}
+
+static jsize
+JNIEnv_GetArrayLength(JNIEnv* env, jarray p1)
+{
+   return (p1 ? ((struct array*)p1)->length : 0);
+}
+
+static jobjectArray
+JNIEnv_NewObjectArray(JNIEnv* p0, jsize p1, jclass p2, jobject p3)
+{
+   return NULL;
+}
+
+static jobject
+JNIEnv_GetObjectArrayElement(JNIEnv* p0, jobjectArray p1, jsize p2)
+{
+   return NULL;
+}
+
+static void
+JNIEnv_SetObjectArrayElement(JNIEnv* p0, jobjectArray p1, jsize p2, jobject p3)
+{
+}
+
+static void *
+new_array(jsize len, jsize element_size)
+{
+   if (len <= 0)
+      return NULL;
+
+   struct array *array;
+   if (!(array = malloc(sizeof(*array))))
+      return NULL;
+
+   if (!(array->data = calloc(len, element_size))) {
+      free(array);
+      return NULL;
+   }
+
+   array->element_size = element_size;
+   array->length = len;
+   return array;
+}
+
+static jbooleanArray
+JNIEnv_NewBooleanArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jboolean));
+}
+
+
+static jbyteArray
+JNIEnv_NewByteArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jbyte));
+}
+
+static jcharArray
+JNIEnv_NewCharArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jchar));
+}
+
+static jshortArray
+JNIEnv_NewShortArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jshort));
+}
+
+static jintArray
+JNIEnv_NewIntArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jint));
+}
+
+static jlongArray
+JNIEnv_NewLongArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jlong));
+}
+
+static jfloatArray
+JNIEnv_NewFloatArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jfloat));
+}
+
+static jdoubleArray
+JNIEnv_NewDoubleArray(JNIEnv* p0, jsize p1)
+{
+   return new_array(p1, sizeof(jdouble));
+}
+
+static void*
+get_array_elements(JNIEnv *env, void *array, jboolean *isCopy)
+{
+   if (isCopy)
+      *isCopy = JNI_FALSE;
+
+   return (array ? ((struct array*)array)->data : NULL);
+}
+
+static jboolean*
+JNIEnv_GetBooleanArrayElements(JNIEnv* p0, jbooleanArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static jbyte*
+JNIEnv_GetByteArrayElements(JNIEnv* p0, jbyteArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static jchar*
+JNIEnv_GetCharArrayElements(JNIEnv* p0, jcharArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static jshort*
+JNIEnv_GetShortArrayElements(JNIEnv* p0, jshortArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static jint*
+JNIEnv_GetIntArrayElements(JNIEnv* p0, jintArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static jlong*
+JNIEnv_GetLongArrayElements(JNIEnv* p0, jlongArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static jfloat*
+JNIEnv_GetFloatArrayElements(JNIEnv* p0, jfloatArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static jdouble*
+JNIEnv_GetDoubleArrayElements(JNIEnv* p0, jdoubleArray p1, jboolean* p2)
+{
+   return get_array_elements(p0, p1, p2);
+}
+
+static void
+JNIEnv_ReleaseBooleanArrayElements(JNIEnv* p0, jbooleanArray p1, jboolean* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_ReleaseByteArrayElements(JNIEnv* p0, jbyteArray p1, jbyte* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_ReleaseCharArrayElements(JNIEnv* p0, jcharArray p1, jchar* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_ReleaseShortArrayElements(JNIEnv* p0, jshortArray p1, jshort* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_ReleaseIntArrayElements(JNIEnv* p0, jintArray p1, jint* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_ReleaseLongArrayElements(JNIEnv* p0, jlongArray p1, jlong* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_ReleaseFloatArrayElements(JNIEnv* p0, jfloatArray p1, jfloat* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_ReleaseDoubleArrayElements(JNIEnv* p0, jdoubleArray p1, jdouble* p2, jint p3)
+{
+}
+
+static void
+JNIEnv_GetBooleanArrayRegion(JNIEnv* p0, jbooleanArray p1, jsize p2, jsize p3, jboolean* p4)
+{
+}
+
+static void
+get_array_region(JNIEnv *env, const void *arrayobj, jsize start, jsize len, void *buf)
+{
+   if (!arrayobj)
+      return;
+
+   const struct array *array = arrayobj;
+   assert(start + len <= array->length);
+   start *= array->element_size;
+   len *= array->element_size;
+   memcpy(buf, (char *)array->data + start, len);
+}
+
+static void
+JNIEnv_GetByteArrayRegion(JNIEnv *env, jbyteArray arrayobj, jsize start, jsize len, jbyte* buf)
+{
+
+   get_array_region(env, arrayobj, start, len, buf);
+}
+
+static void
+JNIEnv_GetCharArrayRegion(JNIEnv* p0, jcharArray p1, jsize p2, jsize p3, jchar* p4)
+{
+
+   get_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_GetShortArrayRegion(JNIEnv* p0, jshortArray p1, jsize p2, jsize p3, jshort* p4)
+{
+
+   get_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_GetIntArrayRegion(JNIEnv* p0, jintArray p1, jsize p2, jsize p3, jint* p4)
+{
+
+   get_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_GetLongArrayRegion(JNIEnv* p0, jlongArray p1, jsize p2, jsize p3, jlong* p4)
+{
+
+   get_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_GetFloatArrayRegion(JNIEnv* p0, jfloatArray p1, jsize p2, jsize p3, jfloat* p4)
+{
+
+   get_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_GetDoubleArrayRegion(JNIEnv* p0, jdoubleArray p1, jsize p2, jsize p3, jdouble* p4)
+{
+
+   get_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+set_array_region(JNIEnv *env, void *arrayobj, jsize start, jsize len, const void *buf)
+{
+   if (!arrayobj)
+      return;
+
+   const struct array *array = arrayobj;
+   assert(start + len <= array->length);
+   start *= array->element_size;
+   len *= array->element_size;
+   memcpy((char *)array->data + start, buf, len);
+}
+
+static void
+JNIEnv_SetBooleanArrayRegion(JNIEnv* p0, jbooleanArray p1, jsize p2, jsize p3, const jboolean* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_SetByteArrayRegion(JNIEnv* p0, jbyteArray p1, jsize p2, jsize p3, const jbyte* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_SetCharArrayRegion(JNIEnv* p0, jcharArray p1, jsize p2, jsize p3, const jchar* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+
+static void
+JNIEnv_SetShortArrayRegion(JNIEnv* p0, jshortArray p1, jsize p2, jsize p3, const jshort* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+JNIEnv_SetIntArrayRegion(JNIEnv* p0, jintArray p1, jsize p2, jsize p3, const jint* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+
+static void
+JNIEnv_SetLongArrayRegion(JNIEnv* p0, jlongArray p1, jsize p2, jsize p3, const jlong* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+
+static void
+JNIEnv_SetFloatArrayRegion(JNIEnv* p0, jfloatArray p1, jsize p2, jsize p3, const jfloat* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+
+static void
+JNIEnv_SetDoubleArrayRegion(JNIEnv* p0, jdoubleArray p1, jsize p2, jsize p3, const jdouble* p4)
+{
+   set_array_region(p0, p1, p2, p3, p4);
+}
+
+static void
+jnienv_register_jvm_native_method(JNIEnv *env, const char *klass, const char *method, void *function)
+{
+   size_t i;
+   struct jvm *jvm = jnienv_get_jvm(env);
+   for (i = 0; i < ARRAY_SIZE(jvm->methods) && jvm->methods[i].function; ++i);
+   assert(i < ARRAY_SIZE(jvm->methods) && "native method limit reached!");
+   jvm->methods[i].klass = strdup(klass);
+   jvm->methods[i].method = strdup(method);
+   jvm->methods[i].function = function;
+}
+
+static jint
+JNIEnv_RegisterNatives(JNIEnv* p0, jclass p1, const JNINativeMethod* p2, jint p3)
+{
+   const struct jclass *clazz = (struct jclass*)p1;
+   const JNINativeMethod *method = p2;
+   for (int i = 0; i < p3; ++i, ++method) {
+      jnienv_register_jvm_native_method(p0, clazz->name, method->name, method->fnPtr);
+   }
+   return 0;
+}
+
+static jint
+JNIEnv_UnregisterNatives(JNIEnv* p0, jclass p1)
+{
+   const struct jclass *klass = (struct jclass*)p1;
+   struct jvm *jvm = jnienv_get_jvm(p0);
+   for (size_t i = 0; i < ARRAY_SIZE(jvm->methods) && jvm->methods[i].function; ++i) {
+      if (strcmp(jvm->methods[i].klass, klass->name))
+         continue;
+      jvm->methods[i] = (struct jvm_native_method){0};
+   }
+   return 0;
+}
+
+static jint
+JNIEnv_MonitorEnter(JNIEnv* p0, jobject p1)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_MonitorExit(JNIEnv* p0, jobject p1)
+{
+   return 0;
+}
+
+static jint
+JNIEnv_GetJavaVM(JNIEnv* env, JavaVM** vm)
+{
+   struct jvm *jvm = jnienv_get_jvm(env);
+   *vm = (JavaVM*)&jvm->vm;
+   return 0;
+}
+
+static void
+JNIEnv_GetStringRegion(JNIEnv* p0, jstring p1, jsize p2, jsize p3, jchar* p4)
+{
+}
+
+static void
+JNIEnv_GetStringUTFRegion(JNIEnv* p0, jstring p1, jsize p2, jsize p3, char* p4)
+{
+}
+
+static void*
+JNIEnv_GetPrimitiveArrayCritical(JNIEnv *env, jarray array, jboolean *isCopy)
+{
+   return get_array_elements(env, array, isCopy);
+}
+
+static void
+JNIEnv_ReleasePrimitiveArrayCritical(JNIEnv *env, jarray array, void *carray, jint mode)
+{
+}
+
+const jchar*
+JNIEnv_GetStringCritical(JNIEnv* p0, jstring p1, jboolean* p2)
+{
+
+   return NULL;
+}
+
+static void
+JNIEnv_ReleaseStringCritical(JNIEnv* p0, jstring p1, const jchar* p2)
+{
+
+}
+
+static jweak
+JNIEnv_NewWeakGlobalRef(JNIEnv* p0, jobject p1)
+{
+   return NULL;
+}
+
+static void
+JNIEnv_DeleteWeakGlobalRef(JNIEnv* p0, jweak p1)
+{
+}
+
+static jboolean
+JNIEnv_ExceptionCheck(JNIEnv* p0)
+{
+   return 0;
+}
+
+static jobject
+JNIEnv_NewDirectByteBuffer(JNIEnv* p0, void* p1, jlong p2)
+{
+   return NULL;
+}
+
+static void*
+JNIEnv_GetDirectBufferAddress(JNIEnv* p0, jobject p1)
+{
+   return NULL;
+}
+
+static jlong
+JNIEnv_GetDirectBufferCapacity(JNIEnv* p0, jobject p1)
+{
+   return 0;
+}
+
+const char*
+JNIEnv_GetStringUTFChars(JNIEnv *env, jstring string, jboolean *isCopy)
+{
+   if (!string)
+      return strdup("");
+
+   struct jstring *str = (struct jstring*)string;
+
+   return str->data;
+}
+
+static void
+JNIEnv_ReleaseStringUTFChars(JNIEnv *env, jstring string, const char *utf)
+{
+   free((void*)utf);
+}
+
+static void
+env_init(JNIEnv *env, struct JNINativeInterface *native)
+{
+   assert(env && native);
+   native->GetStringUTFChars = JNIEnv_GetStringUTFChars;
+   native->ReleaseStringUTFChars = JNIEnv_ReleaseStringUTFChars;
+   native->GetVersion = JNIEnv_GetVersion;
+   native->DefineClass = JNIEnv_DefineClass;
+   native->FindClass = JNIEnv_FindClass;
+   native->FromReflectedMethod = JNIEnv_FromReflectedMethod;
+   native->FromReflectedField = JNIEnv_FromReflectedField;
+   native->ToReflectedMethod = JNIEnv_ToReflectedMethod;
+   native->GetSuperclass = JNIEnv_GetSuperclass;
+   native->IsAssignableFrom = JNIEnv_IsAssignableFrom;
+   native->ToReflectedField = JNIEnv_ToReflectedField;
+   native->Throw = JNIEnv_Throw;
+   native->ThrowNew = JNIEnv_ThrowNew;
+   native->ExceptionOccurred = JNIEnv_ExceptionOccurred;
+   native->ExceptionDescribe = JNIEnv_ExceptionDescribe;
+   native->ExceptionClear = JNIEnv_ExceptionClear;
+   native->FatalError = JNIEnv_FatalError;
+   native->PushLocalFrame = JNIEnv_PushLocalFrame;
+   native->PopLocalFrame = JNIEnv_PopLocalFrame;
+   native->NewGlobalRef = JNIEnv_NewGlobalRef;
+   native->DeleteGlobalRef = JNIEnv_DeleteGlobalRef;
+   native->DeleteLocalRef = JNIEnv_DeleteLocalRef;
+   native->IsSameObject = JNIEnv_IsSameObject;
+   native->NewLocalRef = JNIEnv_NewLocalRef;
+   native->EnsureLocalCapacity = JNIEnv_EnsureLocalCapacity;
+   native->AllocObject = JNIEnv_AllocObject;
+   native->NewObject = JNIEnv_NewObject;
+   native->NewObjectV = JNIEnv_NewObjectV;
+   native->NewObjectA = JNIEnv_NewObjectA;
+   native->GetObjectClass = JNIEnv_GetObjectClass;
+   native->IsInstanceOf = JNIEnv_IsInstanceOf;
+   native->GetMethodID = JNIEnv_GetMethodID;
+   native->CallObjectMethod = JNIEnv_CallObjectMethod;
+   native->CallObjectMethodV = JNIEnv_CallObjectMethodV;
+   native->CallObjectMethodA = JNIEnv_CallObjectMethodA;
+   native->CallBooleanMethod = JNIEnv_CallBooleanMethod;
+   native->CallBooleanMethodV = JNIEnv_CallBooleanMethodV;
+   native->CallBooleanMethodA = JNIEnv_CallBooleanMethodA;
+   native->CallByteMethod = JNIEnv_CallByteMethod;
+   native->CallByteMethodV = JNIEnv_CallByteMethodV;
+   native->CallByteMethodA = JNIEnv_CallByteMethodA;
+   native->CallCharMethod = JNIEnv_CallCharMethod;
+   native->CallCharMethodV = JNIEnv_CallCharMethodV;
+   native->CallCharMethodA = JNIEnv_CallCharMethodA;
+   native->CallShortMethod = JNIEnv_CallShortMethod;
+   native->CallShortMethodV = JNIEnv_CallShortMethodV;
+   native->CallShortMethodA = JNIEnv_CallShortMethodA;
+   native->CallIntMethod = JNIEnv_CallIntMethod;
+   native->CallIntMethodV = JNIEnv_CallIntMethodV;
+   native->CallIntMethodA = JNIEnv_CallIntMethodA;
+   native->CallLongMethod = JNIEnv_CallLongMethod;
+   native->CallLongMethodV = JNIEnv_CallLongMethodV;
+   native->CallLongMethodA = JNIEnv_CallLongMethodA;
+   native->CallFloatMethod = JNIEnv_CallFloatMethod;
+   native->CallFloatMethodV = JNIEnv_CallFloatMethodV;
+   native->CallFloatMethodA = JNIEnv_CallFloatMethodA;
+   native->CallDoubleMethod = JNIEnv_CallDoubleMethod;
+   native->CallDoubleMethodV = JNIEnv_CallDoubleMethodV;
+   native->CallDoubleMethodA = JNIEnv_CallDoubleMethodA;
+   native->CallVoidMethod = JNIEnv_CallVoidMethod;
+   native->CallVoidMethodV = JNIEnv_CallVoidMethodV;
+   native->CallVoidMethodA = JNIEnv_CallVoidMethodA;
+   native->CallNonvirtualObjectMethod = JNIEnv_CallNonvirtualObjectMethod;
+   native->CallNonvirtualObjectMethodV = JNIEnv_CallNonvirtualObjectMethodV;
+   native->CallNonvirtualObjectMethodA = JNIEnv_CallNonvirtualObjectMethodA;
+   native->CallNonvirtualBooleanMethod = JNIEnv_CallNonvirtualBooleanMethod;
+   native->CallNonvirtualBooleanMethodV = JNIEnv_CallNonvirtualBooleanMethodV;
+   native->CallNonvirtualBooleanMethodA = JNIEnv_CallNonvirtualBooleanMethodA;
+   native->CallNonvirtualByteMethod = JNIEnv_CallNonvirtualByteMethod;
+   native->CallNonvirtualByteMethodV = JNIEnv_CallNonvirtualByteMethodV;
+   native->CallNonvirtualByteMethodA = JNIEnv_CallNonvirtualByteMethodA;
+   native->CallNonvirtualCharMethod = JNIEnv_CallNonvirtualCharMethod;
+   native->CallNonvirtualCharMethodV = JNIEnv_CallNonvirtualCharMethodV;
+   native->CallNonvirtualCharMethodA = JNIEnv_CallNonvirtualCharMethodA;
+   native->CallNonvirtualShortMethod = JNIEnv_CallNonvirtualShortMethod;
+   native->CallNonvirtualShortMethodV = JNIEnv_CallNonvirtualShortMethodV;
+   native->CallNonvirtualShortMethodA = JNIEnv_CallNonvirtualShortMethodA;
+   native->CallNonvirtualIntMethod = JNIEnv_CallNonvirtualIntMethod;
+   native->CallNonvirtualIntMethodV = JNIEnv_CallNonvirtualIntMethodV;
+   native->CallNonvirtualIntMethodA = JNIEnv_CallNonvirtualIntMethodA;
+   native->CallNonvirtualLongMethod = JNIEnv_CallNonvirtualLongMethod;
+   native->CallNonvirtualLongMethodV = JNIEnv_CallNonvirtualLongMethodV;
+   native->CallNonvirtualLongMethodA = JNIEnv_CallNonvirtualLongMethodA;
+   native->CallNonvirtualFloatMethod = JNIEnv_CallNonvirtualFloatMethod;
+   native->CallNonvirtualFloatMethodV = JNIEnv_CallNonvirtualFloatMethodV;
+   native->CallNonvirtualFloatMethodA = JNIEnv_CallNonvirtualFloatMethodA;
+   native->CallNonvirtualDoubleMethod = JNIEnv_CallNonvirtualDoubleMethod;
+   native->CallNonvirtualDoubleMethodV = JNIEnv_CallNonvirtualDoubleMethodV;
+   native->CallNonvirtualDoubleMethodA = JNIEnv_CallNonvirtualDoubleMethodA;
+   native->CallNonvirtualVoidMethod = JNIEnv_CallNonvirtualVoidMethod;
+   native->CallNonvirtualVoidMethodV = JNIEnv_CallNonvirtualVoidMethodV;
+   native->CallNonvirtualVoidMethodA = JNIEnv_CallNonvirtualVoidMethodA;
+   native->GetFieldID = JNIEnv_GetFieldID;
+   native->GetObjectField = JNIEnv_GetObjectField;
+   native->GetBooleanField = JNIEnv_GetBooleanField;
+   native->GetByteField = JNIEnv_GetByteField;
+   native->GetCharField = JNIEnv_GetCharField;
+   native->GetShortField = JNIEnv_GetShortField;
+   native->GetIntField = JNIEnv_GetIntField;
+   native->GetLongField = JNIEnv_GetLongField;
+   native->GetFloatField = JNIEnv_GetFloatField;
+   native->GetDoubleField = JNIEnv_GetDoubleField;
+   native->SetObjectField = JNIEnv_SetObjectField;
+   native->SetBooleanField = JNIEnv_SetBooleanField;
+   native->SetByteField = JNIEnv_SetByteField;
+   native->SetCharField = JNIEnv_SetCharField;
+   native->SetShortField = JNIEnv_SetShortField;
+   native->SetIntField = JNIEnv_SetIntField;
+   native->SetLongField = JNIEnv_SetLongField;
+   native->SetFloatField = JNIEnv_SetFloatField;
+   native->SetDoubleField = JNIEnv_SetDoubleField;
+   native->GetStaticMethodID = JNIEnv_GetStaticMethodID;
+   native->CallStaticObjectMethod = JNIEnv_CallStaticObjectMethod;
+   native->CallStaticObjectMethodV = JNIEnv_CallStaticObjectMethodV;
+   native->CallStaticObjectMethodA = JNIEnv_CallStaticObjectMethodA;
+   native->CallStaticBooleanMethod = JNIEnv_CallStaticBooleanMethod;
+   native->CallStaticBooleanMethodV = JNIEnv_CallStaticBooleanMethodV;
+   native->CallStaticBooleanMethodA = JNIEnv_CallStaticBooleanMethodA;
+   native->CallStaticByteMethod = JNIEnv_CallStaticByteMethod;
+   native->CallStaticByteMethodV = JNIEnv_CallStaticByteMethodV;
+   native->CallStaticByteMethodA = JNIEnv_CallStaticByteMethodA;
+   native->CallStaticCharMethod = JNIEnv_CallStaticCharMethod;
+   native->CallStaticCharMethodV = JNIEnv_CallStaticCharMethodV;
+   native->CallStaticCharMethodA = JNIEnv_CallStaticCharMethodA;
+   native->CallStaticShortMethod = JNIEnv_CallStaticShortMethod;
+   native->CallStaticShortMethodV = JNIEnv_CallStaticShortMethodV;
+   native->CallStaticShortMethodA = JNIEnv_CallStaticShortMethodA;
+   native->CallStaticIntMethod = JNIEnv_CallStaticIntMethod;
+   native->CallStaticIntMethodV = JNIEnv_CallStaticIntMethodV;
+   native->CallStaticIntMethodA = JNIEnv_CallStaticIntMethodA;
+   native->CallStaticLongMethod = JNIEnv_CallStaticLongMethod;
+   native->CallStaticLongMethodV = JNIEnv_CallStaticLongMethodV;
+   native->CallStaticLongMethodA = JNIEnv_CallStaticLongMethodA;
+   native->CallStaticFloatMethod = JNIEnv_CallStaticFloatMethod;
+   native->CallStaticFloatMethodV = JNIEnv_CallStaticFloatMethodV;
+   native->CallStaticFloatMethodA = JNIEnv_CallStaticFloatMethodA;
+   native->CallStaticDoubleMethod = JNIEnv_CallStaticDoubleMethod;
+   native->CallStaticDoubleMethodV = JNIEnv_CallStaticDoubleMethodV;
+   native->CallStaticDoubleMethodA = JNIEnv_CallStaticDoubleMethodA;
+   native->CallStaticVoidMethod = JNIEnv_CallStaticVoidMethod;
+   native->CallStaticVoidMethodV = JNIEnv_CallStaticVoidMethodV;
+   native->CallStaticVoidMethodA = JNIEnv_CallStaticVoidMethodA;
+   native->GetStaticFieldID = JNIEnv_GetStaticFieldID;
+   native->GetStaticObjectField = JNIEnv_GetStaticObjectField;
+   native->GetStaticBooleanField = JNIEnv_GetStaticBooleanField;
+   native->GetStaticByteField = JNIEnv_GetStaticByteField;
+   native->GetStaticCharField = JNIEnv_GetStaticCharField;
+   native->GetStaticShortField = JNIEnv_GetStaticShortField;
+   native->GetStaticIntField = JNIEnv_GetStaticIntField;
+   native->GetStaticLongField = JNIEnv_GetStaticLongField;
+   native->GetStaticFloatField = JNIEnv_GetStaticFloatField;
+   native->GetStaticDoubleField = JNIEnv_GetStaticDoubleField;
+   native->SetStaticObjectField = JNIEnv_SetStaticObjectField;
+   native->SetStaticBooleanField = JNIEnv_SetStaticBooleanField;
+   native->SetStaticByteField = JNIEnv_SetStaticByteField;
+   native->SetStaticCharField = JNIEnv_SetStaticCharField;
+   native->SetStaticShortField = JNIEnv_SetStaticShortField;
+   native->SetStaticIntField = JNIEnv_SetStaticIntField;
+   native->SetStaticLongField = JNIEnv_SetStaticLongField;
+   native->SetStaticFloatField = JNIEnv_SetStaticFloatField;
+   native->SetStaticDoubleField = JNIEnv_SetStaticDoubleField;
+   native->NewString = JNIEnv_NewString;
+   native->GetStringLength = JNIEnv_GetStringLength;
+   native->GetStringChars = JNIEnv_GetStringChars;
+   native->ReleaseStringChars = JNIEnv_ReleaseStringChars;
+   native->NewStringUTF = JNIEnv_NewStringUTF;
+   native->GetStringUTFLength = JNIEnv_GetStringUTFLength;
+   native->GetArrayLength = JNIEnv_GetArrayLength;
+   native->NewObjectArray = JNIEnv_NewObjectArray;
+   native->GetObjectArrayElement = JNIEnv_GetObjectArrayElement;
+   native->SetObjectArrayElement = JNIEnv_SetObjectArrayElement;
+   native->NewBooleanArray = JNIEnv_NewBooleanArray;
+   native->NewByteArray = JNIEnv_NewByteArray;
+   native->NewCharArray = JNIEnv_NewCharArray;
+   native->NewShortArray = JNIEnv_NewShortArray;
+   native->NewIntArray = JNIEnv_NewIntArray;
+   native->NewLongArray = JNIEnv_NewLongArray;
+   native->NewFloatArray = JNIEnv_NewFloatArray;
+   native->NewDoubleArray = JNIEnv_NewDoubleArray;
+   native->GetBooleanArrayElements = JNIEnv_GetBooleanArrayElements;
+   native->GetByteArrayElements = JNIEnv_GetByteArrayElements;
+   native->GetCharArrayElements = JNIEnv_GetCharArrayElements;
+   native->GetShortArrayElements = JNIEnv_GetShortArrayElements;
+   native->GetIntArrayElements = JNIEnv_GetIntArrayElements;
+   native->GetLongArrayElements = JNIEnv_GetLongArrayElements;
+   native->GetFloatArrayElements = JNIEnv_GetFloatArrayElements;
+   native->GetDoubleArrayElements = JNIEnv_GetDoubleArrayElements;
+   native->ReleaseBooleanArrayElements = JNIEnv_ReleaseBooleanArrayElements;
+   native->ReleaseByteArrayElements = JNIEnv_ReleaseByteArrayElements;
+   native->ReleaseCharArrayElements = JNIEnv_ReleaseCharArrayElements;
+   native->ReleaseShortArrayElements = JNIEnv_ReleaseShortArrayElements;
+   native->ReleaseIntArrayElements = JNIEnv_ReleaseIntArrayElements;
+   native->ReleaseLongArrayElements = JNIEnv_ReleaseLongArrayElements;
+   native->ReleaseFloatArrayElements = JNIEnv_ReleaseFloatArrayElements;
+   native->ReleaseDoubleArrayElements = JNIEnv_ReleaseDoubleArrayElements;
+   native->GetBooleanArrayRegion = JNIEnv_GetBooleanArrayRegion;
+   native->GetByteArrayRegion = JNIEnv_GetByteArrayRegion;
+   native->GetCharArrayRegion = JNIEnv_GetCharArrayRegion;
+   native->GetShortArrayRegion = JNIEnv_GetShortArrayRegion;
+   native->GetIntArrayRegion = JNIEnv_GetIntArrayRegion;
+   native->GetLongArrayRegion = JNIEnv_GetLongArrayRegion;
+   native->GetFloatArrayRegion = JNIEnv_GetFloatArrayRegion;
+   native->GetDoubleArrayRegion = JNIEnv_GetDoubleArrayRegion;
+   native->SetBooleanArrayRegion = JNIEnv_SetBooleanArrayRegion;
+   native->SetByteArrayRegion = JNIEnv_SetByteArrayRegion;
+   native->SetCharArrayRegion = JNIEnv_SetCharArrayRegion;
+   native->SetShortArrayRegion = JNIEnv_SetShortArrayRegion;
+   native->SetIntArrayRegion = JNIEnv_SetIntArrayRegion;
+   native->SetLongArrayRegion = JNIEnv_SetLongArrayRegion;
+   native->SetFloatArrayRegion = JNIEnv_SetFloatArrayRegion;
+   native->SetDoubleArrayRegion = JNIEnv_SetDoubleArrayRegion;
+   native->RegisterNatives = JNIEnv_RegisterNatives;
+   native->UnregisterNatives = JNIEnv_UnregisterNatives;
+   native->MonitorEnter = JNIEnv_MonitorEnter;
+   native->MonitorExit = JNIEnv_MonitorExit;
+   native->GetJavaVM = JNIEnv_GetJavaVM;
+   native->GetStringRegion = JNIEnv_GetStringRegion;
+   native->GetStringUTFRegion = JNIEnv_GetStringUTFRegion;
+   native->GetPrimitiveArrayCritical = JNIEnv_GetPrimitiveArrayCritical;
+   native->ReleasePrimitiveArrayCritical = JNIEnv_ReleasePrimitiveArrayCritical;
+   native->GetStringCritical = JNIEnv_GetStringCritical;
+   native->ReleaseStringCritical = JNIEnv_ReleaseStringCritical;
+   native->NewWeakGlobalRef = JNIEnv_NewWeakGlobalRef;
+   native->DeleteWeakGlobalRef = JNIEnv_DeleteWeakGlobalRef;
+   native->ExceptionCheck = JNIEnv_ExceptionCheck;
+   native->NewDirectByteBuffer = JNIEnv_NewDirectByteBuffer;
+   native->GetDirectBufferAddress = JNIEnv_GetDirectBufferAddress;
+   native->GetDirectBufferCapacity = JNIEnv_GetDirectBufferCapacity;
+   *env = native;
+}
+
+static jint
+JavaVM_DestroyJavaVM(JavaVM *vm)
+{
+   return 0;
+}
+
+static jint
+JavaVM_AttachCurrentThread(JavaVM *vm, JNIEnv **env, void *args)
+{
+   *env = &javavm_get_jvm(vm)->env;
+   return 0;
+}
+
+static jint
+JavaVM_DetachCurrentThread(JavaVM *vm)
+{
+   return 0;
+}
+
+static jint
+JavaVM_GetEnv(JavaVM *vm, void **env, jint version)
+{
+   *env = &javavm_get_jvm(vm)->env;
+   return 0;
+}
+
+static jint
+JavaVM_AttachCurrentThreadAsDaemon(JavaVM *vm, JNIEnv **env, void *args)
+{
+   *env = &javavm_get_jvm(vm)->env;
+   return 0;
+}
+
+static void
+vm_init(JavaVM *vm, struct JNIInvokeInterface *invoke)
+{
+   assert(vm && invoke);
+   invoke->DestroyJavaVM = JavaVM_DestroyJavaVM;
+   invoke->AttachCurrentThread = JavaVM_AttachCurrentThread;
+   invoke->DetachCurrentThread = JavaVM_DetachCurrentThread;
+   invoke->GetEnv = JavaVM_GetEnv;
+   invoke->AttachCurrentThreadAsDaemon = JavaVM_AttachCurrentThreadAsDaemon;
+   *vm = invoke;
+}
+
+void
+jvm_init(struct jvm *jvm)
+{
+   assert(jvm);
+   *jvm = (struct jvm){0};
+   vm_init(&jvm->vm, &jvm->invoke);
+   env_init(&jvm->env, &jvm->native);
+}
diff --git a/src/fakejvm/jvm.h b/src/fakejvm/jvm.h
new file mode 100644
index 0000000..f7e9d6c
--- /dev/null
+++ b/src/fakejvm/jvm.h
@@ -0,0 +1,25 @@
+#pragma once
+
+#include "jni.h"
+
+struct jvm_native_method {
+    char *klass;
+    char *method;
+    void *function;
+};
+
+struct jvm {
+    struct jvm_native_method methods[255];
+
+    struct JNINativeInterface native;
+    struct JNIInvokeInterface invoke;
+
+    // JNI's api is weird.. pointer to a reference of a struct, OK!
+    // Developers have to dereference these pointers to call methods from an ... reference.
+    // NOTE: These are pointers, and JNI interface passes pointers to these pointers!
+    JNIEnv env; // points to native
+    JavaVM vm; // points to invoke
+};
+
+void
+jvm_init(struct jvm *jvm);