How to do a "jmp 64b address" in X64 ASM pls ?

[ningji]

basically i want to jmp to a 64b address, what i get so far is

FF 25 00 00 00 00 12 34 56 78 12 34 56 78

here 0x1234567812345678 is pointer of the 64bit address i want to jump to.

but it takes 14 bytes.

how can i do the jump in less bytes ?

[neni]

you worried about code size or overall size? if its code size, you can place the jump target addr in a global variable and than indirectly jump to it using rip relative addr mode