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Saya mencoba membuat program yang menentukan apakah suatu bilangan prima atau tidak di perakitan x64 menggunakan wsl, ini kodenya:
global main section .data input_number dq 17 newline db 0xA prime_msg db "The number is prime" not_prime_msg db "The number is not prime" section .text main: mov rdi, input_number ; Preserve rdi push rdi call is_prime ; Restore rdi pop rdi ; Exit the program mov rax, 60 xor rdi, rdi syscall is_prime: ; Function to check if a number is prime ; Check if the number is less than 2 cmp rdi, 2 jl not_prime ; Loop to check divisors from 2 to the square root of the number mov rcx, 2 check_next_divisor: mov rax, rdi ; Copy the number to rax xor rdx, rdx ; Clear any previous remainder div rcx ; Divide rax by rcx, quotient in rax, remainder in rdx ; Check if the remainder is zero test rdx, rdx je not_prime ; If yes, it's not a prime number inc rcx ; Check if the divisor is greater than the square root of the number mov rax, rcx mul rax cmp rax, rdi jg prime ; If the divisor is greater than the square root, it's a prime number jmp check_next_divisor prime: ; Print message for a prime number mov rax, 1 mov rdi, 1 mov rsi, prime_msg mov rdx, 40 ; Adjust the length of the message if needed syscall ; Set zero flag to indicate it is prime ret not_prime: ; Print message for a non-prime number mov rax, 1 mov rdi, 1 mov rsi, not_prime_msg mov rdx, 40 ; Adjust the length of the message if needed syscall ; Set carry flag to indicate it is not prime stc ret and i got these errors: ld: warning: cannot find entry symbol _start; defaulting to 0000000000401000 1.o: in function `prime_msg': 1.asm:(.data+0x1c): relocation truncated to fit: R_X86_64_8 against `.data' 1.o: in function `not_prime_msg': 1.asm:(.data+0x34): relocation truncated to fit: R_X86_64_8 against `.data'
Apa yang saya coba:
saya mendapatkan kesalahan ini:
ld: warning: cannot find entry symbol _start; defaulting to 0000000000401000 1.o: in function `prime_msg': 1.asm:(.data+0x1c): relocation truncated to fit: R_X86_64_8 against `.data' 1.o: in function `not_prime_msg': 1.asm:(.data+0x34): relocation truncated to fit: R_X86_64_8 against `.data'
Solusi 1
Pesan pertama memberitahu Anda bahwa Anda belum mendefinisikan a start
label untuk titik masuk utama program. Yang lain menunjukkan bahwa operan terlalu panjang untuk didaftarkan rsi
. Anda harus memeriksa dokumentasi assembler dan cpu untuk mengetahui alasannya. Sudah lama sejak saya menulis banyak assembler tetapi jika saya ingat dengan benar Anda perlu menggunakan offset
operator pada baris tersebut:
ASM
mov rsi, offset prime_msg ; ... mov rsi, offset not_prime_msg
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