FSD

Float Store Double

FSD rs2, offset(rs1)

Stores a 64-bit double-precision floating-point value to memory.

Encoding

Binary Layout

imm12hi

31:25

rs2

24:20

rs1

19:15

011

14:12

imm12lo

11:7

0100111

6:0

 

Format S-Type

Opcode 0x00003027

Extension D

Operands

• rs2
  Src (Float Reg)
• rs1
  Base Address
• offset
  Offset

Example

FSD f1, 16(x2)

// Stores f1 to stack+16.

Related

More in D

Reference

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

Description

Stores a floating-point register to memory at address rs1+sext(offset).

Operation

M[R[rs1] + sext(offset)][63:0] = F[rs2];