I've just started using radare2 and I've noticed a dot when I tried to disassamble one on my programs. The output is:
0x00000000 48b841000000. movabs rax, 0x41
I understand that 0x48 is the REX prefix for mov (0xB8) and immediate operand is 0x41. If 0x41 consumed 64 bits it would be 0x0000000000000041 (8 bytes).
Total length of the instruction should be 10 bytes (0xA) which makes sense as my next instruction starts at 0xA (as first one consumes 10 bytes starting from 0x0 to 0x9)
What is the meaning of dot in disassembly above? Could someone maybe point me to documentation that talks about disassembly format?