[SOLVED] The method to generate support packages

I'm using hc32f460xE from XHSC on SES, unfortunately, the vendor doesn't provide a sdk fitted ses, so i have to converted the template for IAR and then make l lot of adjustment to let the project working well.
Since i find no package for my chip in the package manager, I'm considering generating one by myself,can anyone tell me what i should do or what documents i can refer?

Hi Nino,

Many thanks for your help!
It works well now!