LD

Load Doubleword

LD rd, offset(rs1)

Loads a 64-bit doubleword from memory.

Details

LD loads a 64-bit doubleword from memory at address rs1+sext(offset) and writes it to rd.

Pseudocode Operation

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

Example

LD x1, 0(x2)

Encoding

Binary Layout
imm[11:0]
31:20
rs1
19:15
011
14:12
rd
11:7
0000011
6:0
 
Format I-Type
Opcode 0x03
Extension RV64I

Operands

  • rd
    Destination Register
  • rs1
    Base Address
  • offset
    Byte Offset