172 lines
3.1 KiB
ArmAsm
172 lines
3.1 KiB
ArmAsm
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global _start
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[bits 32]
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[section .text]
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%include "utils.s"
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_start:
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mov esi, file
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parse_line:
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; find first num
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mov ebp, esi ; line start
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.first_num:
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mov edi, esi ; save before loc
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call dec_parse
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jc .first_num
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; edi has pointer to just before numbers
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mov ecx, edi
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sub ecx, ebp
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dec ecx ; space
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xchg esi, ebp
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mov [line_len], ecx
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mov edi, line
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rep movsb
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xchg esi, ebp
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mov dword [contiguous_broken+ 0], 0
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mov dword [contiguous_broken+ 4], 0
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mov dword [contiguous_broken+ 8], 0
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mov dword [contiguous_broken+12], 0
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mov dword [contiguous_broken+16], 0
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mov dword [contiguous_broken+20], 0
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mov dword [contiguous_broken+24], 0
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mov dword [contiguous_broken+28], 0
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mov dword [contiguous_broken+32], 0
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mov dword [contiguous_broken+36], 0
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mov dword [contiguous_broken+40], 0
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mov dword [contiguous_broken+44], 0
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mov dword [contiguous_broken+48], 0
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mov dword [contiguous_broken+52], 0
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mov dword [contiguous_broken+56], 0
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mov dword [contiguous_broken+60], 0
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mov edi, contiguous_broken
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stosb
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.next_num:
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cmp byte [esi-1], 10 ; \n
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je .newline
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call dec_parse
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jc .next_num
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.got_num:
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stosb
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jmp .next_num
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.newline:
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push esi ; save input line
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; clear cache
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mov edi, cache
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mov ecx, (cache.end - cache)/4
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mov eax, -1
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rep stosd
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; setup do_stream vars
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xor esi, esi ; line idx
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mov ebp, [line_len]
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xor edi, edi ; contiguous_broken idx
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xor edx, edx ; poss_counter high
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xor ebx, ebx ; poss_counter low
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call do_stream ; call into recursive routine
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add [final_value+0], ebx ; poss_counter low
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adc [final_value+4], edx ; poss_counter high
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mov eax, edx
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call print_dec
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call space
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mov eax, ebx
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call print_dec
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call newline
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jmp parse_line_cont
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do_stream:
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cmp byte [line+esi], '.'
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je .cont
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cmp byte [line+esi], '#'
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jne .branch
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.broke:
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cmp byte [contiguous_broken+edi], 0
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je .ret ; branch impossible
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movzx ecx, byte [contiguous_broken+edi]
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inc edi
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.consume_things:
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mov al, byte [line+esi]
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inc esi
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cmp esi, ebp
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ja .ret ; branch impossible
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cmp al, '.'
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je .ret ; branch impossible
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loop .consume_things
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cmp esi, ebp
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je .cont
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cmp byte [line+esi], '#'
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je .ret ; branch impossible
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; .cont consumes . or ? (must be .)
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jmp .cont
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.branch: ; recursive branch
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mov eax, esi
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shl eax, 8 ; *256
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cmp dword [eax+edi*8+cache], -1
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je .not_cached
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add ebx, [eax+edi*8+(cache+0)]
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adc edx, [eax+edi*8+(cache+4)]
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jmp .cont
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.not_cached:
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push edx
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push ebx
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push esi
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push edi
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xor ebx, ebx
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xor edx, edx
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call do_stream.broke ; assume #
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pop edi
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pop esi
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mov eax, esi
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shl eax, 8
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mov [eax+edi*8+(cache+0)], ebx
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mov [eax+edi*8+(cache+4)], edx
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pop eax
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add ebx, eax
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pop eax
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adc edx, eax
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; assume .
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.cont:
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inc esi
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cmp esi, ebp
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jb do_stream
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; iff we are at the end of stream
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; and contiguous_broken is exhausted
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; we add a possibility
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cmp byte [contiguous_broken+edi], 0
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jne .ret
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add ebx, 1 ; poss counter
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adc edx, 0
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.ret:
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ret
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parse_line_cont:
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pop esi
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cmp esi, file.over-1
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jb parse_line
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call newline
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game_over:
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mov eax, [final_value+4]
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call print_dec
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call space
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mov eax, [final_value+0]
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call print_dec
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call newline
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jmp exit
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[section .data]
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line_len: dd 0
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final_value: dd 0, 0
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final_setting: dd 0, 0
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curr_setting: dd 0, 0
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file: incbin "input5"
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.over:
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nl_str: db "new line!"
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.over:
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[section .bss]
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contiguous_broken: resb 64
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line: resb 512
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cache: resd 256*64*2
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cache.end:
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