ADRP Form PC-relative address to 4KB page This instruction adds an immediate value that is shifted left by 12 bits, to the PC value to form a PC-relative address, with the bottom 12 bits masked out, and writes the result to the destination register. 1 1 0 0 0 0 ADRP <Xd>, <label> let d : integer{} = UInt(Rd); let imm : bits(64) = SignExtend{}(immhi::immlo::Zeros{12}); <Xd> Is the 64-bit name of the general-purpose destination register, encoded in the "Rd" field. <label> Is the program label whose 4KB page address is to be calculated. Its offset from the page address of this instruction, in the range +/-4GB, is encoded as "immhi:immlo" times 4096. let base : bits(64) = PC64()[63:12]::Zeros{12}; X{64}(d) = base + imm; 2026-03-12 12:23:09 2025-09_rel_asl1