c.fldsp
Load doubleword into floating-point register from stack
This instruction is defined by:
Synopsis
Loads a double-precision floating-point value from memory into floating-point register fd.
It computes its effective address by adding the zero-extended offset, scaled by 8,
to the stack pointer, x2.
It expands to fld fd, offset(x2).
Decode Variables
Bits<9> imm = {$encoding[4:2], $encoding[12], $encoding[6:5], 3'd0};
Bits<5> fd = $encoding[11:7];Execution
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Pruned, XLEN == 64
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Original
XReg virtual_address = X[2] + imm;
F[fd] = read_memory(64, virtual_address, $encoding);if (implemented?(ExtensionName::C) && (CSR[misa].C == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
if (implemented?(ExtensionName::D) && (CSR[misa].D == 1'b0)) {
raise(ExceptionCode::IllegalInstruction, mode(), $encoding);
}
XReg virtual_address = X[2] + imm;
F[fd] = read_memory(64, virtual_address, $encoding);