How Strings Are Compared in Assembly | Beginner Tutorial | x86-64 Machine Code

Follow along with me in the x64Playground: https://x64.halb.it (Select GNU as the Assembler!) Watch the course from the beginning:    • Learn Assembly For Beginners | Introductio...   Next Video in Course:    • Building a Tiny Shell in Assembly | Beginn...   Previous Video in Course:    • How a Shell Reads Commands | Building a To...   00:00 Why CMP fails for Strings 01:36 Coding strcmp() in Assembly 07:10 Testing strcmp() 8:55 Outputting match/no match 12:40 CHALLENGE: Check only N characters of string ;##### Code Below exit: xor rdi, rdi mov rax, 60 syscall print: push rdi call slen pop rsi mov rdx, rax mov rax, 1 mov rdi, 1 syscall ret println: push rdi call slen pop rsi mov rdx, rax mov rax, 1 mov rdi, 1 syscall mov rax, 1 mov rdi, 1 lea rsi, [newline] mov rdx, 1 syscall ret slen: xor rcx, rcx slen.loop: mov al, [rdi + rcx] cmp al, 0 je slen.ret inc rcx jmp slen.loop slen.ret: mov rax, rcx ret ;#########