AUIPC - RISC-V instruction reference

auipcAdd upper immediate to PC 
Adds an upper 20-bit immediate, shifted left by 12 bits, to the PC and stores the result in t1.
RISC-V manual: auipc 
Forms  auipc ,   
Operands t1 Any integer register, x0 to x31, or its named alias, such as zero, t0 or t6. 
imm20 A 20-bit immediate, 0 to 1048575 (0xFFFFF), placed in bits 31–12. 
 # auipc writes 0x00401000 to t0.
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marker: .word 17
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auipc t0, 1