m.visitCode();
int index=1;
m.visitVarInsn(ALOAD,0);
for (Class param : c.getParameterTypes()) {
Type t = Type.getType(param);
m.visitVarInsn(t.getOpcode(ILOAD), index);
index += t.getSize();
}
m.visitMethodInsn(INVOKESPECIAL, Type.getInternalName(base), "<init>", methodDescriptor);
m.visitInsn(RETURN);
m.visitMaxs(index,index);
m.visitEnd();