c.sw
Store word
This instruction is defined by:
-
anyOf:
-
C, version >= 0
-
Zca, version >= 0
-
This instruction is included in the following profiles:
Synopsis
Stores a 32-bit value in register rs2 to memory.
It computes an effective address by adding the zero-extended offset, scaled by 4,
to the base address in register rs1.
It expands to sw rs2, offset(rs1).
Decode Variables
Bits<7> imm = {$encoding[5], $encoding[12:10], $encoding[6], 2'd0};
Bits<3> rs2 = $encoding[4:2];
Bits<3> rs1 = $encoding[9:7];Execution
-
IDL
if (implemented?(ExtensionName::C) && (CSR[misa].C == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
XReg virtual_address = X[rs1] + imm;
write_memory<32>(virtual_address, X[rs2][31:0], $encoding);