SH

Store Halfword

SH rs2, offset(rs1)

Stores the lowest 16 bits of a register to memory.

Details

SH stores the least-significant halfword (16 bits) of rs2 to memory at address rs1+sext(offset).

Pseudocode Operation

M[R[rs1] + sext(offset)][15:0] = R[rs2][15:0];

Example

SH x5, 4(x10)

Encoding

Binary Layout

imm[11:5]

31:25

rs2

24:20

rs1

19:15

001

14:12

imm[4:0]

11:7

0100011

6:0

Format S-Type

Opcode 0x23

Extension RV32I

Operands

rs2
Source
rs1
Base Address
offset
Offset