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jenoa.c
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jenoa.c
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#include "jenoa.h"
#include <string.h>
#include <locale.h>
#include <dlfcn.h>
#include "dyncall/dyncall/dyncall.h"
char *last_error = NULL;
char * update_last_error ()
{
if (last_error)
free (last_error);
const char *err = dlerror ();
last_error = err == NULL ? NULL : strdup (err);
return last_error;
}
const dc_vm_size = 4096;
jmethodID get_class, boolean_value, byte_value, short_value, int_value, long_value, float_value, double_value;
jclass boolean_class, byte_class, char_class, short_class, int_class, long_class, float_class, double_class, void_class, object_class, exception_class;
const char
*boolean_class_name ="java/lang/Boolean",
*byte_class_name ="java/lang/Byte",
*short_class_name ="java/lang/Short",
*int_class_name ="java/lang/Integer",
*long_class_name ="java/lang/Long",
*float_class_name ="java/lang/Float",
*double_class_name ="java/lang/Double",
*void_class_name ="java/lang/Void",
*object_class_name ="java/lang/Object",
*exception_class_name ="java/lang/Exception";
JNIEXPORT void JNICALL Java_nativeandroid_jenoa_LibDL_init_1libdl
(JNIEnv *env, jclass cls)
{
setlocale (LC_ALL, "C");
boolean_class = (*env)->FindClass (env, boolean_class_name);
byte_class = (*env)->FindClass (env, byte_class_name);
short_class = (*env)->FindClass (env, short_class_name);
int_class = (*env)->FindClass (env, int_class_name);
long_class = (*env)->FindClass (env, long_class_name);
float_class = (*env)->FindClass (env, float_class_name);
double_class = (*env)->FindClass (env, double_class_name);
void_class = (*env)->FindClass (env, void_class_name);
object_class = (*env)->FindClass (env, object_class_name);
exception_class = (*env)->FindClass (env, exception_class_name);
get_class = (*env)->GetMethodID (env, object_class, "getClass", "()Ljava/lang/Class;");
boolean_value = (*env)->GetMethodID (env, boolean_class, "booleanValue", "()Z");
byte_value = (*env)->GetMethodID (env, byte_class, "byteValue", "()B");
short_value = (*env)->GetMethodID (env, short_class, "shortValue", "()S");
int_value = (*env)->GetMethodID (env, int_class, "intValue", "()I");
long_value = (*env)->GetMethodID (env, long_class, "longValue", "()J");
float_value = (*env)->GetMethodID (env, float_class, "floatValue", "()F");
double_value = (*env)->GetMethodID (env, double_class, "doubleValue", "()D");
}
JNIEXPORT long JNICALL Java_nativeandroid_jenoa_LibDL_init_1dyncall (JNIEnv *env, jobject instance)
{
return (long) dcNewCallVM (dc_vm_size);
}
JNIEXPORT void JNICALL Java_nativeandroid_jenoa_LibDL_cleanup_1dyncall (JNIEnv *env, jobject instance, long handle)
{
dcFree ((DCCallVM*) handle);
}
JNIEXPORT void JNICALL Java_nativeandroid_jenoa_LibDL_cleanup_1libdl
(JNIEnv *env, jclass cls)
{
if (last_error != NULL)
free (last_error);
}
JNIEXPORT jlong JNICALL Java_nativeandroid_jenoa_LibDL_dlopen
(JNIEnv * env, jclass cls, jstring name, jint mode)
{
jboolean isCopy;
const char *nameChars = (*env)->GetStringUTFChars (env, name, &isCopy);
jlong ret = (jlong) dlopen (nameChars, mode);
last_error = update_last_error ();
if (isCopy)
(*env)->ReleaseStringUTFChars (env, name, nameChars);
return ret;
}
JNIEXPORT jstring JNICALL Java_nativeandroid_jenoa_LibDL_dlerror
(JNIEnv *env, jclass cls)
{
return last_error ? (*env)->NewStringUTF (env, last_error) : NULL;
}
JNIEXPORT jint JNICALL Java_nativeandroid_jenoa_LibDL_dlclose
(JNIEnv * env, jclass cls, jlong ptr)
{
jint ret = (jint) dlclose ((void*) ptr);
last_error = update_last_error ();
return ret;
}
JNIEXPORT jlong JNICALL Java_nativeandroid_jenoa_LibDL_dlsym
(JNIEnv * env, jclass cls, jlong handle, jstring name)
{
jboolean isCopy;
const char *nameChars = (*env)->GetStringUTFChars (env, name, &isCopy);
jlong ret = (jlong) dlsym ((void*) handle, nameChars);
last_error = update_last_error ();
if (isCopy)
(*env)->ReleaseStringUTFChars (env, name, nameChars);
return ret;
}
void prepareDynCall (JNIEnv *env, DCCallVM* vm, jobjectArray params)
{
int i;
dcReset (vm);
jsize len = (*env)->GetArrayLength (env, params);
for (i = 0; i < len; i++) {
jobject obj = (*env)->GetObjectArrayElement (env, params, i);
jclass cls = (jclass) (*env)->CallObjectMethod (env, obj, get_class);
if ((*env)->IsSameObject (env, cls, boolean_class))
dcArgBool (vm, (DCbool) (*env)->CallBooleanMethod (env, obj, boolean_value));
else if ((*env)->IsSameObject (env, cls, byte_class))
dcArgChar (vm, (DCchar) (*env)->CallCharMethod (env, obj, byte_value));
else if ((*env)->IsSameObject (env, cls, short_class))
dcArgShort (vm, (DCchar) (*env)->CallShortMethod (env, obj, short_value));
else if ((*env)->IsSameObject (env, cls, int_class))
dcArgInt (vm, (DCchar) (*env)->CallIntMethod (env, obj, int_value));
else if ((*env)->IsSameObject (env, cls, long_class))
dcArgLong (vm, (DCchar) (*env)->CallLongMethod (env, obj, long_value));
else if ((*env)->IsSameObject (env, cls, float_class))
dcArgFloat (vm, (DCchar) (*env)->CallFloatMethod (env, obj, float_value));
else if ((*env)->IsSameObject (env, cls, double_class))
dcArgDouble (vm, (DCchar) (*env)->CallDoubleMethod (env, obj, double_value));
else
ThrowNew (env, exception_class, "Invalid parameter type");
}
}
JNIEXPORT jboolean JNICALL Java_nativeandroid_jenoa_LibDL_invokeBoolean
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallBool (vm, fp);
}
JNIEXPORT jbyte JNICALL Java_nativeandroid_jenoa_LibDL_invokeByte
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallChar (vm, fp);
}
JNIEXPORT jshort JNICALL Java_nativeandroid_jenoa_LibDL_invokeShort
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallShort (vm, fp);
}
JNIEXPORT jint JNICALL Java_nativeandroid_jenoa_LibDL_invokeInt
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallInt (vm, fp);
}
JNIEXPORT jlong JNICALL Java_nativeandroid_jenoa_LibDL_invokeLong
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallLong (vm, fp);
}
JNIEXPORT jfloat JNICALL Java_nativeandroid_jenoa_LibDL_invokeFloat
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallFloat (vm, fp);
}
JNIEXPORT jdouble JNICALL Java_nativeandroid_jenoa_LibDL_invokeDouble
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallDouble (vm, fp);
}
JNIEXPORT void JNICALL Java_nativeandroid_jenoa_LibDL_invokeVoid
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return dcCallVoid (vm, fp);
}
JNIEXPORT jlong JNICALL Java_nativeandroid_jenoa_LibDL_invokePointer
(JNIEnv *env, jobject instance, jlong handle, jlong dcHandle, jobjectArray params)
{
DCpointer fp = (DCpointer) handle;
DCCallVM *vm = (DCCallVM*) dcHandle;
prepareDynCall (env, vm, params);
return (jlong) dcCallPointer (vm, fp);
}
JNIEXPORT jint JNICALL Java_nativeandroid_jenoa_Native_getPointerSize
(JNIEnv *env, jclass cls)
{
return (jint) sizeof (void*);
}
JNIEXPORT jint JNICALL Java_nativeandroid_jenoa_Native_getLongSize
(JNIEnv *env, jclass cls)
{
return (jint) sizeof (long);
}
JNIEXPORT jint JNICALL Java_nativeandroid_jenoa_Native_getWCharSize
(JNIEnv *env, jclass cls)
{
return (jint) sizeof (wchar_t);
}
JNIEXPORT jint JNICALL Java_nativeandroid_jenoa_Native_getSizeTSize
(JNIEnv *env, jclass cls)
{
return (jint) sizeof (size_t);
}
JNIEXPORT jlong JNICALL Java_nativeandroid_jenoa_Native_valueOfNullPointer
(JNIEnv *env, jclass cls)
{
return (jlong) NULL;
}