c.lqsp
Load quadruple word from stack pointer
This instruction is defined by:
Synopsis
C.LQSP is an RV128C-only instruction that loads a 128-bit value from memory into register rd.
It computes its effective address by adding the zero-extended offset, scaled by 16,
to the stack pointer, x2.
It expands to lq rd, offset(x2).
C.LQSP is only valid when rd ≠ x0 the code points with rd=x0 are reserved.
Decode Variables
Bits<10> imm = {$encoding[5:2], $encoding[12], $encoding[6], 4'd0};
Bits<5> rd = $encoding[11:7];Execution
-
Pruned, XLEN == 64
-
Original
XReg virtual_address = X[2] + imm;
X[rd] = read_memory<128>(virtual_address, $encoding);if (implemented?(ExtensionName::C) && (CSR[misa].C == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
XReg virtual_address = X[2] + imm;
X[rd] = read_memory<128>(virtual_address, $encoding);