day 10 parts 1&2
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Lucia Ceionia
parent
fa953385d9
commit
fa4a9b3efd
3
10/Makefile
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3
10/Makefile
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all:
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nasm -g -felf32 main.s && ld -melf_i386 -g main.o
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140
10/input
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140
10/input
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|
||||
FFJ|FJ7LL7JF7LL|.F-F------J|FJ||L-7|FJLJL7F--7F7||L7|FJLJ7LFLJL7L7|L7F--JFJJL7.L7|F--J|||LJ||J|L-7|L-7-LJ||L7L7L7FJ--L--J--JFJFL|-F-F-L7---J
|
||||
F|-LLJFF-J-L7FJL-FJL-7F--7FJL7|L7FJLJF---J|LFJ|LJ|FJLJ..F|-FLJFJFJ|FJ|F7FJJ.J-|.LJL-7FJ||LL||FJF-J|F7L7F|LJJL-J-||J|FJ.LL7L-L-F7|.|.LJ.|7.LL
|
||||
|J7-J-F|.|LLJ-.|F|7|J|L7FJ|LFJ|FJL7F-JF7F7L7L7L-7LJJF|-L-L7|JFJFJ7LJF||LJ|.77-|-|LJ|LJFLJLLLJL7|7LLJL7|J7LLL7.|LLJL-|.J7.|7L|JLF-7JF|F7F--..
|
||||
|L-7-L|J.|FLL7F-|J-JFL-JL7|7L-JL7FJL7FJLJ|FJFJF7|.LLFF7LJJ|7-|FJF7L|-||7LFF--FJFJ|LFJ|J-|-.LF-JL77-LL||7L7|LFFJ-.L7||-L--JF7J--7.FJFL7-F-J-L
|
||||
7-LJ7|L--|7JL77.L||L|LL7LLJJ7F77|L-7||LLFJL7L-JLJ.F.LJ||7.F77LJ7|L-7J|L7|FL-7.F|-F-JJ||.JJFLL7F-J7JFL|L7J---F7J|-|F|J..|7L7.J7L|..7|FLF||.|J
|
||||
L-J7.|.LJL-JF--7J|||L77-JJ|LFJL-JF-JLJ-L|F7L77LJ-L|FLL.F|-L|LJJ7|-FLJ|FJF|LLJ-7LF|F7.J--J7|-FLJ7|7.J-|FJL|L7LL7-.|L7L7-J7|JL|77|.F|F|.JL7777
|
||||
...F7|F7|LJFJ7F7.LF7L-L-J7LJ|F7F7|J|F|J7LJ|FJJJ-J-J.LL-F|JL-7|LLL.JJFLJJ-77LJ.|-J7.-FJFLJL7.L|--JF7|-LJJF--J-FJ|FJFJLL7L|JLLFJ-J7JL-J7JLFJF7
|
||||
-F|7LLJ-L.LF.-J|F|JLJJ-L.FJ.LJLJLJ.FFJJ7LLLJJ7JJ.JF|-JF-J-FL7-7|L7.||-JJ-J-7FF-7.77-77JL||J-7J-L7|JF7L-L-77L-LF|LLJLF7.7J--F|JJ-J7|J-77-JFJ7
|
||||
.LJ|7LL7L-F7-LJ||LFJ.|-L|JF7.J7|-L-J|JFL-7|LL7FFL-7.|7-FL7.-J|L7L7-L|JL7LL|L7J||FL-7-JJ.7J7.|J|||77||7F-L-7.FFJJ-FJ.F-J|-L.-JJ.|L7|.7L77F-7|
|
||||
77L|-.|L7FLLJJ.L|7J..-.F-7-|7|7|||JFJ.-J.7J.FJ-JL|JJ.7-L7|77FJ.J.L.|JLFJJL7LLJFJLF7J.FF|J--7||||||FL7LJF|L|7-7|JFF--7FLL.||J7.-77FJJ|FF7JFF7
|
||||
-7-LLLJ|L|7FJ|F.J7...L7|F-7||7|J-J.L|7.|F|-JJ-F|||.|7LJL7.|L|F-FJJF|7FL|.7J..--77.|.L|JJ.|.F-7||F-F7L77FL.|7FJ---J77L-7|L-|JFF7L-7|-FJ|.L|L7
|
||||
L7LLLL--7L-JJL.LL--.|-F-L-|-7-LJJ-F.LJ--LJFJ--JL---7-LJLL-7.|JJ|.LF-FJ-LF|-7-|-J-F|-LLLL|-JLLFJLJ.L|JLJ7-F-FJ-7-J.-J-LJ7JL7-J.J7JJ|J|L-|.7-|
|
||||
231
10/main.s
Normal file
231
10/main.s
Normal file
@ -0,0 +1,231 @@
|
||||
global _start
|
||||
[bits 32]
|
||||
[section .text]
|
||||
|
||||
%include "utils.s"
|
||||
|
||||
_start:
|
||||
|
||||
; find line length
|
||||
mov edi, file
|
||||
mov ecx, file.over - file
|
||||
mov al, 10 ; \n
|
||||
repne scasb
|
||||
mov eax, edi
|
||||
sub eax, file
|
||||
mov [line_len], eax
|
||||
|
||||
call print_dec
|
||||
call newline
|
||||
|
||||
; find S
|
||||
mov edi, file
|
||||
mov ecx, file.over - file
|
||||
mov al, 'S' ; \n
|
||||
repne scasb
|
||||
mov eax, edi
|
||||
sub eax, file
|
||||
dec eax
|
||||
mov [s_idx], eax
|
||||
mov ebx, [line_len]
|
||||
div ebx
|
||||
mov [s_line], eax
|
||||
call print_dec
|
||||
call space
|
||||
mov [s_col], edx
|
||||
mov eax, edx
|
||||
call print_dec
|
||||
call newline
|
||||
|
||||
mov ecx, (1024*64)/141
|
||||
mov edi, new_f
|
||||
fill_new_f:
|
||||
push ecx
|
||||
mov al, '.'
|
||||
mov ecx, 140
|
||||
rep stosb
|
||||
mov al, 10
|
||||
stosb
|
||||
pop ecx
|
||||
loop fill_new_f
|
||||
|
||||
; walk the loop
|
||||
mov esi, file
|
||||
add esi, [s_idx]
|
||||
mov edx, esi ; last loc
|
||||
mov ebx, [line_len]
|
||||
; downs
|
||||
lea edi, [esi+ebx]
|
||||
cmp byte [edi], '|'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'J'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'L'
|
||||
je walking_loop
|
||||
; ups
|
||||
neg ebx
|
||||
lea edi, [esi+ebx]
|
||||
cmp byte [edi], '|'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'F'
|
||||
je walking_loop
|
||||
cmp byte [edi], '7'
|
||||
je walking_loop
|
||||
; lefts
|
||||
lea edi, [esi-1]
|
||||
cmp byte [edi], '-'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'L'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'F'
|
||||
je walking_loop
|
||||
; rights
|
||||
lea edi, [esi+1]
|
||||
cmp byte [edi], '-'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'J'
|
||||
je walking_loop
|
||||
cmp byte [edi], '7'
|
||||
je walking_loop
|
||||
jmp fucked_up
|
||||
|
||||
; | - 7 J L F
|
||||
walking_loop:
|
||||
pushad
|
||||
xor edx, edx
|
||||
mov eax, edi
|
||||
sub eax, file
|
||||
mov ebx, [line_len]
|
||||
div ebx
|
||||
call print_dec
|
||||
call space
|
||||
mov eax, edx
|
||||
call print_dec
|
||||
call newline
|
||||
popad
|
||||
inc dword [final_value]
|
||||
mov ebx, edi
|
||||
sub ebx, file
|
||||
mov al, [edi]
|
||||
mov [ebx+new_f], al
|
||||
cmp byte [edi], 'S'
|
||||
je done_walking
|
||||
c_pipe:
|
||||
cmp byte [edi], '|'
|
||||
jne c_hyphen
|
||||
mov eax, edi
|
||||
add eax, [line_len]
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, [line_len]
|
||||
jmp walking_loop
|
||||
c_hyphen:
|
||||
cmp byte [edi], '-'
|
||||
jne c_7
|
||||
mov eax, edi
|
||||
add eax, 1
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, 1
|
||||
jmp walking_loop
|
||||
c_7:
|
||||
cmp byte [edi], '7'
|
||||
jne c_J
|
||||
mov eax, edi
|
||||
add eax, [line_len] ; down
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, 1 ; left
|
||||
jmp walking_loop
|
||||
c_J:
|
||||
cmp byte [edi], 'J'
|
||||
jne c_L
|
||||
mov eax, edi
|
||||
sub eax, [line_len] ; up
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, 1 ; left
|
||||
jmp walking_loop
|
||||
c_L:
|
||||
cmp byte [edi], 'L'
|
||||
jne c_F
|
||||
mov eax, edi
|
||||
sub eax, [line_len] ; up
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
add edi, 1 ; right
|
||||
jmp walking_loop
|
||||
c_F:
|
||||
cmp byte [edi], 'F'
|
||||
jne fucked_up
|
||||
mov eax, edi
|
||||
add eax, [line_len] ; down
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
add edi, 1 ; right
|
||||
jmp walking_loop
|
||||
|
||||
done_walking:
|
||||
mov eax, [final_value]
|
||||
inc eax
|
||||
shr eax, 1
|
||||
mov [final_value], eax
|
||||
|
||||
game_over:
|
||||
mov eax, [final_value]
|
||||
call print_dec
|
||||
call newline
|
||||
; go get an image editor and fill
|
||||
; and ready for lots of counting :3
|
||||
mov esi, new_f
|
||||
mov ecx, file.over - file
|
||||
call print_string
|
||||
call newline
|
||||
jmp exit
|
||||
|
||||
fucked_up:
|
||||
mov eax, 999999999
|
||||
call print_dec
|
||||
jmp exit
|
||||
|
||||
[section .data]
|
||||
line_len: dd 0
|
||||
s_idx: dd 0
|
||||
s_line: dd 0
|
||||
s_col: dd 0
|
||||
final_value: dd 0
|
||||
file: incbin "input"
|
||||
.over:
|
||||
|
||||
[section .bss]
|
||||
new_f: resb 1024*64
|
||||
208
10/main_part1.s
Normal file
208
10/main_part1.s
Normal file
@ -0,0 +1,208 @@
|
||||
global _start
|
||||
[bits 32]
|
||||
[section .text]
|
||||
|
||||
%include "utils.s"
|
||||
|
||||
_start:
|
||||
|
||||
; find line length
|
||||
mov edi, file
|
||||
mov ecx, file_lim - file
|
||||
mov al, 10 ; \n
|
||||
repne scasb
|
||||
mov eax, edi
|
||||
sub eax, file
|
||||
mov [line_len], eax
|
||||
|
||||
call print_dec
|
||||
call newline
|
||||
|
||||
; find S
|
||||
mov edi, file
|
||||
mov ecx, file_lim - file
|
||||
mov al, 'S' ; \n
|
||||
repne scasb
|
||||
mov eax, edi
|
||||
sub eax, file
|
||||
dec eax
|
||||
mov [s_idx], eax
|
||||
mov ebx, [line_len]
|
||||
div ebx
|
||||
mov [s_line], eax
|
||||
call print_dec
|
||||
call space
|
||||
mov [s_col], edx
|
||||
mov eax, edx
|
||||
call print_dec
|
||||
call newline
|
||||
|
||||
; walk the loop
|
||||
mov esi, file
|
||||
add esi, [s_idx]
|
||||
mov edx, esi ; last loc
|
||||
mov ebx, [line_len]
|
||||
; downs
|
||||
lea edi, [esi+ebx]
|
||||
cmp byte [edi], '|'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'J'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'L'
|
||||
je walking_loop
|
||||
; ups
|
||||
neg ebx
|
||||
lea edi, [esi+ebx]
|
||||
cmp byte [edi], '|'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'F'
|
||||
je walking_loop
|
||||
cmp byte [edi], '7'
|
||||
je walking_loop
|
||||
; lefts
|
||||
lea edi, [esi-1]
|
||||
cmp byte [edi], '-'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'L'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'F'
|
||||
je walking_loop
|
||||
; rights
|
||||
lea edi, [esi+1]
|
||||
cmp byte [edi], '-'
|
||||
je walking_loop
|
||||
cmp byte [edi], 'J'
|
||||
je walking_loop
|
||||
cmp byte [edi], '7'
|
||||
je walking_loop
|
||||
jmp fucked_up
|
||||
|
||||
; | - 7 J L F
|
||||
walking_loop:
|
||||
pushad
|
||||
xor edx, edx
|
||||
mov eax, edi
|
||||
sub eax, file
|
||||
mov ebx, [line_len]
|
||||
div ebx
|
||||
call print_dec
|
||||
call space
|
||||
mov eax, edx
|
||||
call print_dec
|
||||
call newline
|
||||
popad
|
||||
inc dword [final_value]
|
||||
cmp byte [edi], 'S'
|
||||
je done_walking
|
||||
c_pipe:
|
||||
cmp byte [edi], '|'
|
||||
jne c_hyphen
|
||||
mov eax, edi
|
||||
add eax, [line_len]
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, [line_len]
|
||||
jmp walking_loop
|
||||
c_hyphen:
|
||||
cmp byte [edi], '-'
|
||||
jne c_7
|
||||
mov eax, edi
|
||||
add eax, 1
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, 1
|
||||
jmp walking_loop
|
||||
c_7:
|
||||
cmp byte [edi], '7'
|
||||
jne c_J
|
||||
mov eax, edi
|
||||
add eax, [line_len] ; down
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, 1 ; left
|
||||
jmp walking_loop
|
||||
c_J:
|
||||
cmp byte [edi], 'J'
|
||||
jne c_L
|
||||
mov eax, edi
|
||||
sub eax, [line_len] ; up
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
sub edi, 1 ; left
|
||||
jmp walking_loop
|
||||
c_L:
|
||||
cmp byte [edi], 'L'
|
||||
jne c_F
|
||||
mov eax, edi
|
||||
sub eax, [line_len] ; up
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
add edi, 1 ; right
|
||||
jmp walking_loop
|
||||
c_F:
|
||||
cmp byte [edi], 'F'
|
||||
jne fucked_up
|
||||
mov eax, edi
|
||||
add eax, [line_len] ; down
|
||||
cmp eax, edx ; last loc
|
||||
je .other_dir
|
||||
mov edx, edi ; last loc = loc
|
||||
mov edi, eax
|
||||
jmp walking_loop
|
||||
.other_dir:
|
||||
mov edx, edi ; last loc = loc
|
||||
add edi, 1 ; right
|
||||
jmp walking_loop
|
||||
|
||||
done_walking:
|
||||
mov eax, [final_value]
|
||||
inc eax
|
||||
shr eax, 1
|
||||
mov [final_value], eax
|
||||
|
||||
game_over:
|
||||
mov eax, [final_value]
|
||||
call print_dec
|
||||
jmp exit
|
||||
|
||||
fucked_up:
|
||||
mov eax, 999999999
|
||||
call print_dec
|
||||
jmp exit
|
||||
|
||||
[section .data]
|
||||
line_len: dd 0
|
||||
s_idx: dd 0
|
||||
s_line: dd 0
|
||||
s_col: dd 0
|
||||
final_value: dd 0
|
||||
file_lim: dd file.over - file
|
||||
file: incbin "input"
|
||||
.over:
|
||||
|
||||
[section .bss]
|
||||
BIN
10/solution.png
Normal file
BIN
10/solution.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 19 KiB |
258
10/utils.s
Normal file
258
10/utils.s
Normal file
@ -0,0 +1,258 @@
|
||||
; call # val val2
|
||||
; int $0x80 eax eax edx -
|
||||
;
|
||||
; arg1 arg2 arg3 arg4 arg5 arg6 arg7
|
||||
; ebx ecx edx esi edi ebp -
|
||||
|
||||
exit:
|
||||
mov eax, 1 ; exit
|
||||
int 0x80
|
||||
|
||||
; filename in EBX
|
||||
; return handle in EBX
|
||||
; read only
|
||||
open_file:
|
||||
push eax
|
||||
push ecx
|
||||
mov eax, 5 ; open
|
||||
xor ecx, ecx ; read only
|
||||
int 0x80
|
||||
mov ebx, eax
|
||||
pop ecx
|
||||
pop eax
|
||||
ret
|
||||
|
||||
; file handle in EBX
|
||||
; buffer in ECX
|
||||
; count of bytes to read in EDX
|
||||
; return bytes actually read in EAX
|
||||
; exits on error
|
||||
read_file:
|
||||
mov eax, 3 ; read
|
||||
int 0x80
|
||||
test eax, eax
|
||||
js .err
|
||||
ret
|
||||
.err:
|
||||
mov eax, 4 ; write
|
||||
mov ebx, 1 ; stdout
|
||||
mov ecx, .err_str
|
||||
mov edx, 21
|
||||
int 0x80
|
||||
jmp exit
|
||||
.err_str: db `Could not read file.\n`
|
||||
|
||||
; string input in ESI
|
||||
; value in EAX
|
||||
; CF set if none, clear if some
|
||||
; ESI set past checked area
|
||||
dec_parse:
|
||||
push ebx
|
||||
push edx
|
||||
push edi
|
||||
xor eax, eax
|
||||
xor edi, edi
|
||||
mov ebx, 10 ; base
|
||||
lodsb
|
||||
sub al, '0'
|
||||
js .no_input
|
||||
cmp al, 9
|
||||
jle .got_char
|
||||
.no_input:
|
||||
stc ; set CF
|
||||
jmp .done
|
||||
.loop:
|
||||
xor eax,eax
|
||||
lodsb
|
||||
sub al, '0'
|
||||
js .dec_done
|
||||
cmp al, 9
|
||||
jg .dec_done
|
||||
.got_char:
|
||||
xchg edi,eax
|
||||
mul ebx
|
||||
add edi,eax
|
||||
jmp .loop
|
||||
.dec_done:
|
||||
clc ; clear CF
|
||||
.done:
|
||||
mov eax,edi
|
||||
pop edi
|
||||
pop edx
|
||||
pop ebx
|
||||
ret
|
||||
|
||||
; string input in ESI
|
||||
; value in EAX
|
||||
; CF set if none, clear if some
|
||||
; ESI set past checked area
|
||||
sign_dec_parse:
|
||||
push ebx
|
||||
push ecx
|
||||
push edx
|
||||
push edi
|
||||
xor eax, eax
|
||||
xor edi, edi
|
||||
xor ecx, ecx ; neg flag
|
||||
mov ebx, 10 ; base
|
||||
cmp byte [esi], '-'
|
||||
jne .no_minus
|
||||
inc esi
|
||||
mov cl, 1
|
||||
.no_minus:
|
||||
lodsb
|
||||
sub al, '0'
|
||||
js .no_input
|
||||
cmp al, 9
|
||||
jle .got_char
|
||||
.no_input:
|
||||
stc ; set CF
|
||||
jmp .done
|
||||
.loop:
|
||||
xor eax,eax
|
||||
lodsb
|
||||
sub al, '0'
|
||||
js .dec_done
|
||||
cmp al, 9
|
||||
jg .dec_done
|
||||
.got_char:
|
||||
xchg edi,eax
|
||||
mul ebx
|
||||
add edi,eax
|
||||
jmp .loop
|
||||
.dec_done:
|
||||
test ecx, ecx
|
||||
jz .not_neg
|
||||
neg edi
|
||||
.not_neg:
|
||||
clc ; clear CF
|
||||
.done:
|
||||
mov eax,edi
|
||||
pop edi
|
||||
pop edx
|
||||
pop ecx
|
||||
pop ebx
|
||||
ret
|
||||
|
||||
; modifies no regs
|
||||
newline:
|
||||
pushad
|
||||
push 10
|
||||
mov eax, 4 ; write
|
||||
mov ebx, 1 ; stdout
|
||||
mov ecx, esp ; string
|
||||
mov edx, 1 ; length
|
||||
int 0x80
|
||||
add esp, 4
|
||||
popad
|
||||
ret
|
||||
; modifies no regs
|
||||
space:
|
||||
pushad
|
||||
push 9
|
||||
mov eax, 4 ; write
|
||||
mov ebx, 1 ; stdout
|
||||
mov ecx, esp ; string
|
||||
mov edx, 1 ; length
|
||||
int 0x80
|
||||
add esp, 4
|
||||
popad
|
||||
ret
|
||||
|
||||
; input in EAX, all regs unmodified
|
||||
print_dec:
|
||||
pushad ; save regs
|
||||
; max 4294967296 is 10 chars
|
||||
; round to nearest 32-bit boundary
|
||||
sub esp, 12
|
||||
; string in ECX, length in EDX
|
||||
lea ecx, [esp+11] ; last possible byte
|
||||
; check for 0
|
||||
test eax, eax
|
||||
jz .zero
|
||||
mov ebx, 10 ; base 10
|
||||
xor esi, esi ; counter
|
||||
.div_shit:
|
||||
xor edx, edx
|
||||
; divide
|
||||
div ebx
|
||||
dec ecx ; next char
|
||||
inc esi
|
||||
; store
|
||||
add dl, '0'
|
||||
mov byte [ecx], dl
|
||||
; check if done
|
||||
test eax, eax
|
||||
jnz .div_shit ; continue
|
||||
mov edx, esi ; counter in edx
|
||||
jmp .write
|
||||
.zero:
|
||||
mov byte [ecx], '0'
|
||||
mov edx, 1 ; length
|
||||
.write:
|
||||
mov eax, 4 ; write
|
||||
mov ebx, 1 ; stdout
|
||||
int 0x80
|
||||
add esp, 12 ; restore stack
|
||||
popad ; restore regs
|
||||
ret
|
||||
|
||||
; input in EAX, all regs unmodified
|
||||
print_sign_dec:
|
||||
pushad ; save regs
|
||||
; range -2147483648 to 2147483647 is 11 chars
|
||||
; round to nearest 32-bit boundary
|
||||
sub esp, 12
|
||||
; string in ECX, length in EDX
|
||||
lea ecx, [esp+11] ; last possible byte
|
||||
; check for 0, negative
|
||||
xor ebp, ebp
|
||||
test eax, eax
|
||||
jz .zero
|
||||
jns .positive
|
||||
neg eax
|
||||
mov ebp, 1
|
||||
.positive:
|
||||
mov ebx, 10 ; base 10
|
||||
xor esi, esi ; counter
|
||||
.div_shit:
|
||||
xor edx, edx
|
||||
; divide
|
||||
div ebx
|
||||
dec ecx ; next char
|
||||
inc esi
|
||||
; store
|
||||
add dl, '0'
|
||||
mov byte [ecx], dl
|
||||
; check if done
|
||||
test eax, eax
|
||||
jnz .div_shit ; continue
|
||||
mov edx, esi ; counter in edx
|
||||
jmp .write
|
||||
.zero:
|
||||
mov byte [ecx], '0'
|
||||
mov edx, 1 ; length
|
||||
.write:
|
||||
test ebp, ebp
|
||||
jz .no_minus
|
||||
dec ecx
|
||||
inc edx
|
||||
mov byte [ecx], '-'
|
||||
.no_minus:
|
||||
mov eax, 4 ; write
|
||||
mov ebx, 1 ; stdout
|
||||
int 0x80
|
||||
add esp, 12 ; restore stack
|
||||
popad ; restore regs
|
||||
ret
|
||||
|
||||
; input in ESI, len in ECX, all regs unmodified
|
||||
print_string:
|
||||
pushad ; save regs
|
||||
mov eax, 4 ; write
|
||||
mov ebx, 1 ; stdout
|
||||
mov edx, ecx ; length
|
||||
mov ecx, esi ; string
|
||||
int 0x80
|
||||
popad ; restore regs
|
||||
ret
|
||||
Loading…
Reference in New Issue
Block a user