Extensible operating system oriented to RISC-V architecture extension instruction set

The invention relates to the technical field of computer software, and provides an extensible operating system oriented to an RISC-V (Reduced Instruction Set Computer-Visual) architecture extension instruction set, a universal RISC-V processor of a hardware layer comprises a basic instruction set and a partial standard extension instruction set, the diversified RISC-V processor further comprises other standard and non-standard extended instruction sets except the instruction set contained in the general processor; a general operating system kernel of the operating system kernel layer does not support a part of specific extended instruction sets, and a specific operating system kernel supports a part of specific extended instruction sets; the basic model of the library layer comprises a library unrelated to an extended instruction set, and the extensible model comprises a library unrelated to the extended instruction set and a library related to the extended instruction set; the basic model of the application