Searchable RISC-V instruction set reference

Instruction format types

R - registers, op rd, rs1, rs2. 3 opcode parts, opcode, funct7, funct3
I - immediate, op rd, rs1, imm[12]. 2 opcode parts, opcode, funct3. Except on ECALL when it uses the immediate section for an opcode, called funct12
S - store, op, rs1, rs2+imm[12]. 2 opcode parts, opcode and funct3.
B - Variant of S type, probably means "branch". 2 opcode parts, opcode and funct3.
U - upper load, op rd, imm[20]. 1 opcode part, opcode.
J - Variant of J type, jump???. 1 opcode part, opcode.
pseudo - Pseudo-instruction

The listings in this searchable RISC-V instruction set reference are generated from documentation written by ~icefox on sourcehut. Website created by swissChili.

This documentation is incomplete for now. Check the ~icefox link for what is currently implemented.