initial

.gitignore

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+main

main.asm

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+format ELF64 executable
+
+segment readable executable
+
+entry main
+main:
+	call init_board
+	mov [turn], 0
+	.game_loop:
+	inc [turn]
+	call get_input
+	sub [input], '0'
+
+	test [turn], 1
+	mov r8b, '2' ; char
+	jz .some
+	mov r8b, '1' ; char
+	.some:
+
+	mov bl, [input]
+	call action
+
+	call print_board
+	call print_board_break
+
+	call win_condition
+	cmp rax, 0
+	jne .game_loop
+
+	mov rax, 60
+	mov rdi, 0
+	syscall
+
+win_condition:
+	ret
+
+get_input:
+	mov rax, 0
+	mov rdi, 0
+	mov rsi, input
+	mov rdx, 2
+	syscall
+	ret
+
+init_board:
+	mov rax, board
+	mov r8, 6
+
+	.init_board_loop:
+	mov r10, 7
+	.init_board_loop_inner:
+	mov byte [rax], '0'
+	inc rax
+
+	dec r10
+	cmp r10, 0
+	jne .init_board_loop_inner
+
+	mov byte [rax], 10
+	inc rax
+
+	dec r8
+	cmp r8, 0
+	jne .init_board_loop
+
+	ret
+print_board:
+	mov rax, 1
+	mov rdi, 1
+	mov rsi, board
+	mov rdx, 48
+	syscall
+	ret
+
+print_board_break:
+	mov rax, 1
+	mov rdi, 1
+	mov rsi, line_break
+	mov rdx, break_len
+	syscall
+	ret
+
+action:; rbx - x, r8b - char
+	mov r9, 6
+	.action_test_loop:
+	dec r9
+	mov rax, 8
+	mul r9
+	mov r10, board
+	add r10, rbx
+	add r10, rax
+
+	cmp r9, 0
+	je .continue_action
+	cmp byte [r10], '0'
+	jne .action_test_loop
+	.continue_action:
+
+	mov r13, 5
+	sub r13, r9
+	mov rcx, r13
+	call place
+	ret
+
+place: ; rbx - x, rcx - y, r8b - char
+	mov rax, 5
+	sub rax, rcx
+	mov r9, 8
+	mul r9
+	mov r10, board
+	add r10, rax
+	add r10, rbx
+	mov byte [r10], r8b
+	ret
+
+segment readable writable
+board rb 48
+table rb 154
+turn rb 1
+input rb 1
+line_break db "-------", 10, 0
+break_len = $-line_break

run.sh

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+#!/bin/sh
+fasm main.asm && ./main