c.sqsp

Store quadruple word to stack

This instruction is defined by:

Encoding

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Synopsis

Stores a 128-bit value in register rs2 to memory. It computes an effective address by adding the zero-extended offset, scaled by 16, to the stack pointer, x2. It expands to sq rs2, offset(x2).

Access

M

HS

U

VS

VU

Always

Always

Always

Always

Always

Decode Variables

Bits<10> imm = {$encoding[10:7], $encoding[12:11], 4'd0};
Bits<5> rs2 = $encoding[6:2];

Execution

  • Pruned, XLEN == 64

  • Original

XReg virtual_address = X[2] + imm;
write_memory<128>(virtual_address, X[rs2], $encoding);
if (implemented?(ExtensionName::C) && (CSR[misa].C == 1'b0)) {
  raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
XReg virtual_address = X[2] + imm;
write_memory<128>(virtual_address, X[rs2], $encoding);

Exceptions

This instruction may result in the following synchronous exceptions:

  • LoadAccessFault

  • StoreAmoAccessFault

  • StoreAmoPageFault