AUIPC

Add Upper Immediate to PC

AUIPC rd, imm

Adds a 20-bit upper immediate to the Program Counter, used for PC-relative addressing.

Encoding

Binary Layout

imm20

31:12

rd

11:7

0010111

6:0

 

Format U-Type

Opcode 0x00000017

Extension RV32I

Operands

• rd
  Destination Register
• imm
  20-bit Upper Immediate

Example

AUIPC x10, 0x1000

// Adds 0x1000000 to the current PC and stores in x10.

Related

More in RV32I

Reference

View in RISC-V Unprivileged ISA Specification ↗ RISC-V ISA Manual

Description

AUIPC (Add Upper Immediate to PC) forms a 32-bit offset from the 20-bit U-immediate (filling the low 12 bits with zeros), adds it to the PC of the AUIPC instruction, and places the result in rd. It is used for PC-relative addressing.

Operation

R[rd] = PC + (imm << 12);