.include "instr.inc"
.text

.global _start
_start:
    push_pc
    pop_r3

    cp_r3 _start
    jp_eq main
    ld_r2_r3
    add_r2 (str_wrong_address - _start)
    jp PrintStr

main:
    # Gather the password
    ld_r2 str_prompt_password
    call PrintStr
    ld_r2 mem_password
    ld_r3 0x10
    call ReadStr
    ld_r2 mem_password
    call StrTrim
    ld_r2 str_validating
    call PrintStr

    # Fuck you
    # Fuck you
    # Fuck you
    ld_r3 0  # Fuck you
    mix  # Fuck you
    mix1_ld_r1 mem_password  # Fuck you
    mix1_inc_r1  # Fuck you
    mix1_ldr_r0_r1  # Fuck you
    mix1_ld_r1 0x5871  # Fuck you
    mix1_cp_r0_r1  # Fuck you
    mix1_jp_ne mix1_skip_inc  # Fuck you
    mix1_inc_r3  # Fuck you
mix1_skip_inc:  # Fuck you
    # Fuck you
    mix1_switch2  # Fuck you
    mix2_ldr_r0 mem_password + 3  # Fuck you
    mix2_xor_r0 0x54c2  # Fuck you
    mix2_cp_r0 0x6da4  # Fuck you
    mix2_jp_ne mix2_skip_inc  # Fuck you
    mix2_inc_r3  # Fuck you
mix2_skip_inc:  # Fuck you
    # Fuck you
    mix2_switch3  # Fuck you
    mix3_ld_r1 mem_password + 1  # Fuck you
    mix3_dec_r1  # Fuck you
    mix3_ldrb_r0_r1  # Fuck you
    mix3_add_r0_r0  # Fuck you
    mix3_add_r0_r0  # Fuck you
    mix3_cp_r0 0x011c  # Fuck you
    mix3_jp_ne mix3_skip_inc  # Fuck you
    mix3_inc_r3  # Fuck you
mix3_skip_inc:  # Fuck you
    # Fuck you
    mix3_ld_r0 -1  # Fuck you
mix_delay:  # Fuck you
    mix3_dec_r0  # Fuck you
    mix3_cp_r0 0x0201  # Fuck you
    mix3_jp_ne mix_delay  # Fuck you
    mix3_end  # Fuck you
    # Fuck you
    # Fuck you
    # Fuck you

    ldrb_r0 mem_password + 5
    cp_r0 0
    jp_ne main_check
    inc_r3
main_check:

    cp_r3 4
    jp_eq main_correct
    ld_r2 str_incorrect
    call PrintStr
    ret

main_correct:
    ld_r2 str_correct
    call PrintStr
    ret

str_prompt_password:
    .ascii "MIX/UNMIX opcodes - proof of concept\n"
    .ascii "Enter a password: \0"

str_aborted:
    .ascii "Aborted.\n\0"

str_incorrect:
    .ascii "Nope, it's wrong.\n\0"

str_validating:
    .ascii "Validating...\n\0"

str_correct:
    .ascii "Yes, it's correct! FOOLS2023_{*insert correct pass here*}\n\0"

str_wrong_address:
    .ascii "Please load this program at address $2000.\n\0"

# GqXf9
mem_password:
    .ascii "________________________\0"