Function LoadMapValue

asm/load_store.go:251–263

LoadMapValue stores a pointer to the value at a certain offset of a map.

(dst Register, fd int, offset uint32)

// LoadMapValue stores a pointer to the value at a certain offset of a map.
func LoadMapValue(dst Register, fd int, offset uint32) Instruction {
	if fd < 0 {
		return Instruction{OpCode: InvalidOpCode}
	}

	fdAndOffset := (uint64(offset) << 32) | uint64(uint32(fd))
	return Instruction{
		OpCode:   LoadImmOp(DWord),
		Dst:      dst,
		Src:      PseudoMapValue,
		Constant: int64(fdAndOffset),
	}
}

// LoadIndOp returns the OpCode for loading a value of given size from an sk_buff.
func LoadIndOp(size Size) OpCode {