const std = @import("std");
const os = @import("os.zig");

export fn _start() callconv(.c) noreturn {
    // _ = os.syscall1(SYS_poke, 0xB16B00B5BADBABE);
    // _ = os.syscall1(SYS_exit, 0x69696969);
    asm volatile ("int3");
    asm volatile (
        \\ mov $0x69696969, %%rdi
        \\ xor %%rsi, %%rsi
        \\ xor %%rbx, %%rbx
        \\ mainloop:
        \\ xor %%rax, %%rax
        \\ delayloop:
        \\ inc %%rax
        \\ cmp $0x4000000, %%rax
        \\ jnz delayloop
        \\ inc %%rbx
        \\ syscall
        \\ jmp mainloop
    );

    die();
}

pub inline fn die() noreturn {
    while (true) {}
}

pub const SYS_exit = 0x420;
pub const SYS_poke = 0x69;