C.SW

Compressed Store Word

C.SW rs2', offset(rs1')

Stores a 32-bit word to memory using a compressed encoding.

Encoding

Binary Layout

?

31:16

110

15:13

c_uimm7hi

12:10

rs1_p

9:7

c_uimm7lo

6:5

rs2_p

4:2

00

1:0

 

Format CS

Opcode 0x0000C000

Extension C

Operands

• rs2'
  Source (x8-x15)
• rs1'
  Base (x8-x15)
• offset
  Offset

Example

C.SW x8, 4(x9)

// 16-bit encoding of SW.

Related

More in C

Reference

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

Description

Stores the low 32 bits of rs2′ to memory at a 6-bit unsigned offset from rs1′.

Operation

M[R[rs1'] + offset][31:0] = R[rs2'];